Note: Descriptions are shown in the official language in which they were submitted.
VARIABLE-SPEED INTEGRATED MACHINE AND WELLSITE APPARATUS
CROSS-REFERENCE OF RELATED APPLICATION
[0001] For all the purposes, the present application claims priority to
Chinese patent
application No. 202110864527.9, filed on July 29, 2021, the entire disclosure
of which is
incorporated herein by reference as part of the present application.
TECHNICAL FIELD
[0002] Embodiments of the present disclosure relate to a variable-speed
integrated
machine and a wellsite apparatus including the variable-speed integrated
machine.
BACKGROUND
[0003] At present, multiple fracturing apparatus (for example, 10 to 30
fracturing
apparatus) are generally used intensively on the fracturing site of oil and
gas fields, which
occupies a large area. In order to reduce the total number of the apparatus,
more and more large
power fracturing apparatus is used.
[0004] The large power fracturing apparatus mainly adopts two power driving
ways,
i.e. diesel-driven and electric-driven. For example, in the diesel-driven
fracturing apparatus, a
power source is a diesel engine, a transmission gear includes a gearbox and a
transmission shaft,
and an executing element is a piston pump. In the electric-driven fracturing
apparatus, the
power source is an electric motor, the transmission gear is a transmission
shaft or a coupler,
and the executing element is a piston pump.
SUMMARY
[0005] According to the first aspect of the present disclosure, it is
provided a variable-
speed integrated machine, comprising: a driving device, comprising an electric
motor and a
housing configured for accommodating the electric motor; an inversion device,
disposed on the
housing and electrically connected with the electric motor; an inversion heat
dissipating device,
disposed at one side of the inversion device away from the housing and
configured to perform
heat dissipation on the inversion device in a liquid-cooling heat dissipating
way; a driving heat
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dissipating device, at least one portion of the driving heat dissipating
device is disposed on the
housing and configured to perform heat dissipation on the driving device in at
least one selected
from the group of a liquid-cooling heat dissipating way and an air-cooling
heat dissipating way;
wherein the inversion device and at least one portion of the driving heat
dissipating device are
disposed on a same side of the housing.
[0006] At least in some embodiments, the housing defines a cavity, the
cavity is
configured to accommodate the electric motor, the driving heat dissipating
device comprises:
an air-cooling heat dissipating mechanism, the air-cooling heat dissipating
mechanism
comprises an air-output assembly communicated with the cavity, and the air-
output assembly
and the inversion device are disposed on the same side of the housing.
[0007] At least in some embodiments, the air-cooling heat dissipating
mechanism
comprises at least two air-output assemblies, and the at least two air-output
assemblies have
same air-output direction or different air-output directions.
[0008] At least in some embodiments, the air-output assembly comprises: a
heat
dissipating fan, disposed on the housing; a fan volute, disposed between the
heat dissipating
fan and the housing; and an exhaust-air duct. A first side of the fan volute
is communicated
with the heat dissipating fan, a second side of the fan volute is communicated
with the cavity,
a third side of the fan volute is communicated with the exhaust-air duct, the
electric motor
comprises an output shaft, and the first side and the second side are opposite
to each other in a
direction perpendicular to the output shaft. The heat dissipating fan is
configured to suction air
in the cavity into the fan volute, and the air is discharged through the
exhaust-air duct.
[0009] At least in some embodiments, the exhaust-air duct comprises: an air
outlet,
facing away from the housing; and an air-outlet cover plate, rotatably
connected to the air outlet
and configured to cover the air outlet.
[0010] At least in some embodiments, the electric motor comprises an output
shaft, the
output shaft extends out from the housing, the housing comprises a first side
and a second side
opposite to each other in a direction perpendicular to the output shaft, the
air-output assembly
and the inversion device are disposed on the first side. The air-cooling heat
dissipating
mechanism further comprises: an air-input assembly, the air-input assembly
comprises an air
inlet disposed on the second side of the housing, the air inlet is configured
as being
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communicated with the cavity, such that the air entering the cavity from the
air inlet is
discharged from the air-output assembly after passing through the electric
motor.
[0011] At least in some embodiments, the air-input assembly comprises: a
groove,
disposed at the second side of the housing, wherein the air inlet is disposed
in the groove; and
a protection mesh, covering the air inlet. A plane where the protection mesh
is located is not
coplanar with an outer surface of the second side of the housing, and the
plane where the
protection mesh is closer to the electric motor than the outer surface of the
second side of the
housing.
[0012] At least in some embodiments, the driving heat dissipating device
comprises: a
liquid-cooling heat dissipating mechanism, the liquid-cooling heat dissipating
mechanism
comprises: a first cooling assembly, disposed in the cavity defined by the
housing, the cavity
is configured to accommodate the electric motor; a first fan assembly,
disposed on the housing;
and a first cooling liquid storage assembly, disposed between the first fan
assembly and the
housing, the first cooling liquid storage assembly is communicated with the
first cooling
assembly and configured to supply cooling liquid to the first cooling
assembly, and the first fan
assembly is configured to perform the heat dissipation on the cooling liquid
in the first cooling
liquid storage assembly. The first cooling liquid storage assembly, the first
fan assembly and
the inversion device all are disposed on the same side of the housing.
[0013] At least in some embodiments, the inversion heat dissipating device
and the
driving heat dissipating device share the first cooling liquid storage
assembly and the first fan
assembly; and the inversion heat dissipating device comprises an inversion
cooling plate
disposed at one side of the inversion device away from the housing, the shared
first fan
assembly is disposed at one side of the inversion cooling plate away from the
housing, and the
shared first cooling liquid storage assembly is disposed between the shared
first fan assembly
and the inversion cooling plate.
[0014] At least in some embodiments, the electric motor comprises an output
shaft, the
output shaft extends out from the housing, and the housing comprises a first
side and a second
side opposite to each other in a direction perpendicular to the output shaft;
and the shared first
cooling liquid storage assembly, the shared first fan assembly, the inversion
device and the
inversion cooling plate all are disposed on the first side of the housing, and
the inversion device
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covers partial or whole outer surface of the first side of the housing.
[0015] At least in some embodiments, the inversion heat dissipating device
comprises:
an inversion cooling passage, disposed in the inversion cooling plate and
comprises an
inversion cooling passage inlet and an inversion cooling passage outlet,
wherein the first
cooling assembly comprises: a first cooling passage, at least one portion of
the first cooling
passage is disposed in the electric motor, and the first cooling passage
comprises a first cooling
passage inlet and a first cooling passage outlet, wherein the first cooling
liquid storage
assembly comprises: a cooling liquid storage chamber, and the cooling liquid
storage chamber
comprises: an output end, configured to output the cooling liquid to the
inversion cooling
passage and the first cooling passage; and an input end, configured to receive
the cooling liquid
flowing back from the inversion cooling passage and the first cooling passage,
wherein the
inversion cooling passage inlet and the first cooling passage inlet are
connected with the output
end respectively, and the inversion cooling passage outlet and the first
cooling passage outlet
are connected with the input end respectively.
[0016] At least in some embodiments, the inversion heat dissipating device
comprises:
an inversion cooling passage, disposed in the inversion cooling plate and
comprises an
inversion cooling passage inlet and an inversion cooling passage outlet;
wherein the first
cooling assembly comprises: a first cooling passage, at least one portion of
the first cooling
passage is disposed in the electric motor, and the first cooling passage
comprises a first cooling
passage inlet and a first cooling passage outlet, wherein the first cooling
liquid storage
assembly comprises a cooling liquid storage chamber, and the cooling liquid
storage chamber
comprises: an output end, configured to output the cooling liquid to the
inversion cooling
passage and the first cooling passage; and an input end, configured to receive
the cooling liquid
flowing back from the inversion cooling passage and the first cooling passage,
wherein the
inversion cooling passage inlet is connected with the output end, the
inversion cooling passage
outlet is connected with the first cooling passage inlet, and the first
cooling passage outlet is
connected with the input end.
[0017] At least in some embodiments, the driving heat dissipating device
comprises an
air-cooling heat dissipating mechanism and a liquid-cooling heat dissipating
mechanism; and
at least one portion of the air-cooling heat dissipating mechanism, at least
one portion of the
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liquid-cooling heat dissipating mechanism, and the inversion device all are
disposed on the
same side of the housing.
[0018] At least in some embodiments, the housing defines a cavity, the
cavity is
configured to accommodate the electric motor, wherein the air-cooling heat
dissipating
mechanism comprises: an air-output assembly communicated with the cavity,
wherein the
liquid-cooling heat dissipating mechanism comprises: a first cooling assembly,
disposed in the
cavity defined by the housing; a first fan assembly, disposed on the housing;
and a first cooling
liquid storage assembly, disposed between the first fan assembly and the
housing, the first
cooling liquid storage assembly is communicated with the first cooling
assembly and
configured to supply the cooling liquid to the first cooling assembly, and the
first fan assembly
is configured to perform the heat dissipation on the cooling liquid in the
first cooling liquid
storage assembly; wherein the air-output assembly, the first cooling liquid
storage assembly,
the first fan assembly, and the inversion device all are disposed on the same
side of the housing.
[0019] At least in some embodiments, wherein the electric motor comprises
an output
shaft, a stator, and a rotor, and the output shaft extends out from the
housing, wherein the first
cooling assembly comprises: a first cooling passage, at least one portion of
the first cooling
passage is disposed in the stator in a direction parallel to the output shaft,
and wherein the air-
cooling heat dissipating mechanism further comprises: an air-input assembly,
the air-input
assembly comprises an air inlet disposed on the housing, the air inlet is
configured as being
communicated with the cavity, such that the air entering the cavity from the
air inlet passes
through the rotor and is discharged from the air-output assembly.
[0020] At least in some embodiments, the inversion heat dissipating device
and the
driving heat dissipating device share the first cooling liquid storage
assembly and the first fan
assembly, and the inversion heat dissipating device comprises: an inversion
cooling plate
disposed at one side of the inversion device away from the housing, the shared
first fan
assembly is disposed at one side of the inversion cooling plate away from the
housing, and the
shared first cooling liquid storage assembly is disposed between the shared
first fan assembly
and the inversion cooling plate.
[0021] At least in some embodiments, the inversion heat dissipating device
comprises:
an inversion cooling passage, disposed in the inversion cooling plate and
comprises an
Date Recue/Date Received 2022-09-08
inversion cooling passage inlet and an inversion cooling passage outlet,
wherein the first
cooling assembly comprises: a first cooling passage, at least one portion of
the first cooling
passage is disposed in the electric motor, and the first cooling passage
comprises a first cooling
passage inlet and a first cooling passage outlet, wherein the first cooling
liquid storage
assembly comprises: a cooling liquid storage chamber, the cooling liquid
storage chamber
comprises: an output end, configured to output the cooling liquid to the
inversion cooling
passage and the first cooling passage; and an input end, configured to receive
the cooling liquid
flowing back from the inversion cooling passage and the first cooling passage,
wherein the
inversion cooling passage inlet and the first cooling passage inlet are
connected with the output
end respectively , and the inversion cooling passage outlet and the first
cooling passage outlet
are connected with the input end respectively.
[0022] At least in some embodiments, the inversion heat dissipating device
comprises:
an inversion cooling passage, disposed in the inversion cooling plate and
comprises an
inversion cooling passage inlet and an inversion cooling passage outlet;
wherein the first
cooling assembly comprises: a first cooling passage, at least one portion of
the first cooling
passage is disposed in the electric motor, and the first cooling passage
comprises a first cooling
passage inlet and a first cooling passage outlet; wherein the first cooling
liquid storage
assembly comprises: a cooling liquid storage chamber, and the cooling liquid
storage chamber
comprises: an output end, configured to output the cooling liquid to the
inversion cooling
passage and the first cooling passage; and an input end, configured to receive
the cooling liquid
flowing back from the inversion cooling passage and the first cooling passage,
wherein the
inversion cooling passage inlet is connected with the output end, the
inversion cooling passage
outlet is connected with the first cooling passage inlet, and the first
cooling passage outlet is
connected with the input end.
[0023] At least in some embodiments, the electric motor comprises: a bottom
and a top,
wherein the housing comprises: a bottom surface on a same side as the bottom
of the electric
motor, and a top surface on a same side as the top of the electric motor, and
wherein at least
one portion of the driving heat dissipating mechanism, the inversion device,
and the inversion
heat dissipating device all are disposed on the top surface of the housing.
[0024] According to the second aspect of the present disclosure, it is
provided a wellsite
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Date Recue/Date Received 2022-09-08
apparatus comprising the variable-speed integrated machine according to claim
1.
BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to clearly illustrate the technical solution of the
embodiments of the
disclosure, the drawings of the embodiments will be briefly described in the
following; it is
obvious that the described drawings are only related to some embodiments of
the disclosure
and thus are not limitative of the disclosure.
[0026] Fig. 1 is a schematically perspective view of a variable-speed
integrated
machine according to an embodiment of the present disclosure in a first
viewing angle.
[0027] Fig. 2 is a structurally schematic diagram of the variable-speed
integrated
machine of Fig. 1.
[0028] Fig. 3 is a schematically perspective view of the variable-speed
integrated
machine of Fig. 1 in a second viewing angle.
[0029] Fig. 4 is a structurally schematic diagram of a driving device and a
driving heat
dissipating device of Fig. 1.
[0030] Fig. 5 is a structurally schematic diagram of an inversion cooling
plate of Fig.
1.
[0031] Fig. 6 is a structurally schematic diagram of an inversion device
and the
inversion heat dissipating device of Fig. 2.
[0032] Fig. 7 is an enlarged schematic diagram of a bottom of the variable-
speed
integrated machine of Fig. 3.
[0033] Fig. 8 is a structurally schematic diagram of the variable-speed
integrated
machine according to another embodiment of the present disclosure.
[0034] Fig. 9 is a schematically perspective view of the variable-speed
integrated
machine according to another embodiment of the present disclosure.
[0035] Fig. 10 is a structurally schematic diagram of the variable-speed
integrated
machine of Fig. 9.
[0036] Fig. 11 is a schematically cross-sectional view of a stator in the
driving device
according to an embodiment of the present disclosure.
[0037] Fig. 12 is a schematically perspective view of the variable-speed
integrated
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Date Recue/Date Received 2022-09-08
machine according to further another embodiment of the present disclosure.
[0038] Fig. 13 is a structurally schematic diagram of the variable-speed
integrated
machine of Fig. 12.
[0039] Fig. 14 to Fig. 19 schematically illustrate connection block
diagrams of
examples in which a first cooling passage and an inversion cooling passage are
connected to
each other in parallel.
[0040] Fig. 20 and Fig. 21 schematically illustrate connection block
diagrams of
examples in which the first cooling passage and the inversion cooling passage
are connected
to each other in series.
[0041] Fig. 22 is a schematically perspective view of a variable-speed
integrated
machine according to another embodiment of the present disclosure.
[0042] Fig. 23 to Fig. 24 schematically illustrate connection block
diagrams of
examples in which the first cooling passage and the inversion cooling passage
are connected
in parallel in the case that an air-cooling heat dissipating way and a liquid-
cooling heat
dissipating way are simultaneously adopted to perform heat dissipation on an
electric motor.
[0043] Fig. 25 schematically illustrates a connection block diagram of an
example in
which the first cooling passage and the inversion cooling passage are
connected in series in the
case that the air-cooling heat dissipating way and the liquid-cooling heat
dissipating way are
simultaneously adopted to perform heat dissipation on the electric motor.
[0044] Fig. 26 is a structurally schematic diagram of an electric-driven
fracturing
apparatus according to an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0045] In order to make objects, technical details and advantages of the
embodiments
of the disclosure apparent, the technical solutions of the embodiments will be
described in a
clearly and fully understandable way in connection with the drawings related
to the
embodiments of the disclosure. Apparently, the described embodiments are just
a part but not
all of the embodiments of the disclosure. Based on the described embodiments
herein, those
skilled in the art can obtain other embodiment(s), without any inventive work,
which should
be within the scope of the disclosure.
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Date Recue/Date Received 2022-09-08
[0046] Unless otherwise defined, all the technical and scientific terms
used herein have
the same meanings as commonly understood by one of ordinary skill in the art
to which the
present disclosure belongs. The terms "first," "second," etc., which are used
in the description
and the claims of the present disclosure, are not intended to indicate any
sequence, amount or
importance, but distinguish various components. The terms "comprises,"
"comprising,"
"includes," "including," etc., are intended to specify that the elements or
the objects stated
before these terms encompass the elements or the objects and equivalents
thereof listed after
these terms, but do not preclude the other elements or objects. The phrases
"connect",
"connected", etc., are not intended to define a physical connection or
mechanical connection,
but may include an electrical connection, directly or indirectly. "On,"
"under," "right," "left"
and the like are only used to indicate relative position relationship, and
when the position of
the object which is described is changed, the relative position relationship
may be changed
accordingly.
[0047] Compared with diesel-driven fracturing apparatus, the electric-
driven fracturing
apparatus has the advantages of low noise, no waste-gas pollution, etc.
However, the existing
electric-driven fracturing apparatus needs a special frequency converter to
drive the rotating
speed regulation of an electric motor, and the frequency converter includes a
rectifying unit
(such as a rectifying transformer) and an inverter, which results in that the
frequency converter
occupies a large space on the electric-driven fracturing apparatus, has a
large weight and is
inconvenient to transport or move. Moreover, there are a lot of connecting
cables between the
electric motor and the frequency converter, resulting in troublesome
operation.
[0048] Accordingly, there is provided a variable-speed integrated machine,
that is, the
electric motor and the inverter are integrated as a whole. The rectifying unit
is not disposed on
the variable-speed integrated machine, and is separated from the electric
motor and the inverter,
so that the speed regulation and driving can be realized by the variable-speed
integrated
machine. It not only effectively reduces the space occupied by the electric
motor and the
frequency converter on the electric-driven fracturing apparatus, but also
reduces the weight of
the electric-driven fracturing apparatus, and thus the transportation is more
convenient.
Furthermore, more space is saved for installing other apparatus on the
fracturing apparatus.
[0049] In the working process of the variable-speed integrated machine, due
to the high
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Date Recue/Date Received 2022-09-08
power of the electric motor and inverter, a great amount of heat may be
generated. Therefore,
a heat dissipating device is needed to perform the heat dissipation on the
variable-speed
integrated machine so as to guarantee the consecutive work of the electric
motor and the
inverter within a normal temperature range.
[0050] At least one embodiment of the present disclosure provides a
variable-speed
integrated machine, which includes a driving device, including an electric
motor and a housing
configured for accommodating the electric motor; an inversion device disposed
on the housing
and electrically connected with the electric motor; an inversion heat
dissipating device disposed
at one side of the inversion device away from the housing and configured to
perform heat
dissipation on the inversion device in a liquid-cooling heat dissipating way;
and a driving heat
dissipating device, at least one portion of the driving heat dissipating
device is disposed on the
housing and configured to perform heat dissipation on the driving device in at
least one selected
from the group of a liquid-cooling heat dissipating way and an air-cooling
heat dissipating way,
wherein the inversion device and at least one portion of the driving heat
dissipating device are
disposed on the same side of the housing.
[0051] In the variable-speed integrated machine provided by at least one
embodiment
of the present disclosure, the inversion heat dissipating device is used to
perform the heat
dissipation on the inversion device, and the driving heat dissipating device
is used to perform
the heat dissipation on the driving device, so that the consecutive work of
the driving device
and the inversion device at a normal temperature in a wellsite is guaranteed
effectively.
[0052] In the case that at least one portion of the driving heat
dissipating device and
the inversion device in the variable-speed integrated machine are disposed on
different sides
of the housing respectively, the driving heat dissipating device and the
inversion device are
dispersed on the surface of the housing, which may possibly lead to uncompact
structure of the
variable-speed integrated machine and increase the overall size of the
variable-speed integrated
machine. In the case that the variable-speed integrated machine with large
overall size is
applied to the wellsite apparatus such as the fracturing apparatus or well-
cement apparatus, the
occupied space on the wellsite apparatus may be large. When other apparatuses
are arranged
onto the wellsite apparatus subsequently, the installation space is
insufficient, thereby bringing
about great difficulty to the subsequent work.
Date Recue/Date Received 2022-09-08
[0053] In the variable-speed integrated machine provided by at least one
embodiment
of the present disclosure, at least one portion of the driving heat
dissipating device and the
inversion device are disposed on the same side of the housing, which saves the
space occupied
by the driving heat dissipating device and the inversion device on the
variable-speed integrated
machine, so that the overall size of the variable-speed integrated machine is
reduced. When the
variable-speed integrated machine with small overall size is applied to the
wellsite apparatus,
due to the small overall size of the variable-speed integrated machine, the
occupied space on
the wellsite apparatus is also reduced, thereby providing more space for
installing other
apparatuses on the wellsite apparatus.
[0054] Moreover, for example, during the fracturing operation, a plurality
of electric-
driven fracturing trucks (also referred to as a group of electric-driven
fracturing truck) are
generally provided to execute the fracturing operation together. In order to
reduce the area
occupied by electric-driven fracturing truck set in the wellsite, the
plurality of electric-driven
fracturing trucks are placed generally side by side, i.e. in parallel and at
an interval. In this case,
if at least one portion of the driving heat dissipating device and the
inversion device in the
variable-speed integrated machine on each electric-driven fracturing truck are
disposed on
different sides of the housing respectively (for example, the inversion device
is disposed on the
top surface of the housing, and at least one portion of the driving heat
dissipating device is
disposed on the side surface of the housing), the at least one portion of the
driving heat
dissipating device disposed on the side surface may have a small distance to
the adjacent
electric-driven fracturing truck, thereby affecting the heat dissipating
effect of the adjacent
electric-driven fracturing truck.
[0055] In the variable-speed integrated machine provided by at least one
embodiment
of the present disclosure, at least one portion of the driving heat
dissipating device and the
inversion device are disposed on the same side of the housing, so that the
impact on the heat
dissipating effect of the driving device of the electric-driven fracturing
truck due to the small
distance between the driving heat dissipating device and the adjacent electric-
driven fracturing
truck can be minimized and even eliminated. In particular, in the case that at
least one portion
of the driving heat dissipating device and the inversion device both are
disposed on the top
surface of the housing, since the top space of the electric-driven fracturing
truck is occupied,
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Date Recue/Date Received 2022-09-08
the space of the side surface is not affected, so that even if a transverse
distance between two
electric-driven fracturing trucks is small, the heat dissipating effect of the
two electric-driven
fracturing trucks is not affected.
[0056] In the embodiments of the present disclosure, the liquid-cooling
heat dissipating
way refers to using cooling liquid to take away the heat generated by a to-be-
cooled apparatus,
thereby achieving heat dissipating purpose. The cooling liquid, for example,
includes liquid
fluid. The liquid fluid includes at least one selected from the group of
water, organic liquid, or
inorganic liquid.
[0057] In the embodiment of the present disclosure, the air-cooling heat
dissipating
way is also referred to as an air-cooling heat dissipating way, which achieves
the heat
dissipating purpose by introducing air into the to-be-cooled apparatus.
Compared with the
liquid-cooling heat dissipating way, the air-cooling heat dissipating way has
the advantages of
simple structure, small size, light weight, small heat resistance, large heat
exchange area and
convenience in use and installation.
[0058] In the embodiment of the present disclosure, the same side of the
housing refers
to, for example, a same surface of the housing of the driving device. When the
housing of the
driving device includes a plurality of surfaces, at least one portion of the
driving heat
dissipating device and the inversion device are disposed on the same surface
of the plurality of
surfaces of the housing. In the embodiment of the present disclosure, "a
plurality of" refers to
two or more.
[0059] In the embodiment of the present disclosure, the driving heat
dissipating device
may perform the heat dissipation on the driving device in at least one
selected from the group
of the liquid-cooling heat dissipating way and the air-cooling heat
dissipating way. That is, the
driving heat dissipating device performs the heat dissipation on the driving
device only in the
liquid-cooling heat dissipating way; or the driving heat dissipating device
performs the heat
dissipation on the driving device only in the air-cooling heat dissipating
way; or the driving
heat dissipating device performs the heat dissipation on the driving device
simultaneously in
the liquid-cooling heat dissipating way and the air-cooling heat dissipating
way. In all
embodiments of the present disclosure, the inversion heat dissipating device
adopts the liquid-
cooling heat dissipating way.
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Date Recue/Date Received 2022-09-08
[0060] The present disclosure is described below through several specific
embodiments.
In order to keep the following description of the embodiments of the present
disclosure simple
and clear, the detail description of known functions and known components is
omitted. When
any component of the embodiments of the present disclosure presents in one of
the above
drawings, the component is represented with same reference numerals in all
drawings.
[0061] Fig. 1 is a schematically perspective view of a variable-speed
integrated
machine according to an embodiment of the present disclosure in a first
viewing angle. Fig. 2
is a structurally schematic diagram of the variable-speed integrated machine
of Fig. 1.
[0062] As shown in Fig. 1 to Fig. 2, the variable-speed integrated machine
provided by
at least one embodiment of the present disclosure includes a driving device 1,
a driving heat
dissipating device 2, an inversion device 3 and an inversion heat dissipating
device 4.
[0063] For example, the driving device 1 includes an electric motor 10 and
a housing
12 for accommodating the electric motor 10. The electric motor 10 (also
referred to as motor)
refers to an electromagnetic apparatus which realizes the conversion or
transmission of electric
energy according to the law of electromagnetic induction. The main function of
the electric
motor is to generate a driving torque as a power source of the wellsite
apparatus. The electric
motor may include an AC(alternating current)-power motor a DC(direct current)-
power motor.
In the embodiment of the present disclosure, the electric motor 10 adopts the
AC power motor,
that is, the direct current is converted into alternating current.
[0064] For example, as shown in Fig. 2, the housing 12 defines a cavity 13
for
accommodating the electric motor 10. That is, the electric motor 10 is
disposed inside the
housing 12. The surface of the housing 12 facing towards the electric motor 10
is an inner
surface, and the surface facing away from the electric motor 10 is an outer
surface, for example,
the outer surface includes a top surface, a bottom surface and a side surface.
[0065] As shown in Fig. 1 and Fig. 2, the shape of the housing 12 is
basically a cuboid.
In at least some embodiments, the shape of the housing 12 may also be
columnar, such as a
cube, a cylinder and the like. The embodiment of the present disclosure does
not limit the shape
of the housing 12. When the shape of the housing 12 is cuboid or cube, it is
beneficial to fixedly
install the inversion device 3 and the inversion heat dissipating device 4 on
the housing 12,
thereby enhancing the stability of the whole apparatus.
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Date Recue/Date Received 2022-09-08
[0066] Fig. 3 is a schematically perspective view of the variable-speed
integrated
machine of Fig. 1 in a second viewing angle. Fig. 4 is a structurally
schematic diagram of a
driving device and a driving heat dissipating device of Fig. 1.
[0067] As shown in Fig. 1, Fig. 2 and Fig. 4, the electric motor 10
includes an output
shaft 14, a stator 15, a rotor 16, an end cap 17 and a bearing cap 18.
[0068] For example, as shown in Fig. 4, the stator 15 is a fixed portion in
the electric
motor 10, which plays a role in generating a magnetic field and is used as a
mechanical support
of the electric motor. The stator 15, for example, is an outermost cylinder.
The inner side of the
cylinder is provided with a plurality of windings, which are connected with an
external AC
power supply. The whole cylinder is connected with a base and is stationary.
The stator 15, for
example, includes a stator iron core, a stator winding and the base.
[0069] For example, the rotor 16 is a rotating portion in the electric
motor 10. The rotor
16 is disposed in an inner cavity of the stator 15 and connected with the
output shaft 14 of the
electric motor 10 and rotates together with the output shaft 14 at the same
speed. The rotor 16,
for example, includes a rotor iron core and a rotor winding. There is no
connection or contact
between the stator 15 and the rotor 16. However, in the case that the stator
winding is provided
with the AC power, the rotor 16 begins to rotate immediately and output the
power through the
output shaft 14.
[0070] For example, as shown in Fig. 1, Fig. 2 and Fig. 4, the output shaft
14 extends
outwardly from the end cap 17 of the housing 12 and extends along a first
direction (such as
the x direction shown in Fig. 2). The housing 12 includes a first side Si and
a second side S2
which are opposite to each other in a second direction (such as the y
direction shown in Fig. 2)
perpendicular to the x direction. For example, the first side Si is an upper
side shown in Fig.
2, and the second side S2 is a lower side shown in Fig. 2. The housing 12 has
a top surface Fl
and a bottom surface F2 corresponding to the upper side and lower side
respectively.
[0071] For example, as shown in Fig. 3, the housing 12 further includes a
third side S3
and a fourth side S4 which are opposite to each other in a third direction
(such as the z direction
shown in Fig. 2). Accordingly, the housing 12 has two side surfaces F3 and F4
corresponding
to the third side S3 and the fourth side S4 respectively.
[0072] In at least some embodiments, the inversion device 3 may be located
on one of
14
Date Recue/Date Received 2022-09-08
the first side Si, the second side S2, the third side S3 and the fourth side
S4 of the housing 12.
For example, the inversion device 3 is located on one of the top surface Fl,
the bottom surface
F2 and the two side surfaces F3, F4 of the housing 12. As shown in Fig. 1 and
Fig. 2, the
inversion device 3, for example, is located on the top surface Fl of the
housing 12, and the top
surface F 1 of the housing 12 plays a role in fixing and supporting the
inversion device 3.
[0073] In the case that the variable-speed integrated machine is applied to
the wellsite
apparatus such as the electric-driven fracturing truck, the inversion device 3
is located on one
of the first side Si, the third side S3 and the fourth side S4 of the housing
12, that is, the
inversion device 3 is not located at the second side S2 of the housing 12,
because the second
side S2 is used as the bottom of the variable-speed integrated machine, which
may be in direct
contact with the electric-driven fracturing truck when the variable-speed
integrated machine is
disposed or installed on the electric-driven fracturing truck.
[0074] The embodiment of the present disclosure does not limit a connection
way
between the inversion device 3 and the housing 12, as long as the two may be
fixedly installed
together. For example, the housing 12 and the inversion device 3 may be
fixedly installed by
bolts or in a riveting way or in a welding way, etc.
[0075] In at least some embodiments, the inversion device 3 is an inverter,
and the
inverter is electrically connected with the electric motor 10. For example,
the inversion device
3 is connected with the electric motor10 through a power supply wiring and
used to supply
power to the electric motor 10. Generally, when the frequency converter
performs frequency
conversion on the AC power supply, the alternating current is first converted
into direct current,
i.e. "rectifying", and then the direct current is converted into variable-
frequency alternating
current, i.e. "inversion".
[0076] The variable-speed integrated machine of the embodiment of the
present
disclosure is integrated with the inverter and the electric motor, and does
not include any
rectifying unit. Therefore, only the inversion device 3 is disposed on the
driving device 1,
thereby reducing the overall size and weight of the variable-speed integrated
machine. The
variable-frequency alternating current is outputted from the inversion device
3 into the electric
motor 10 to regulate the rotating speed of the electric motor 10.
[0077] As shown in Fig. 1 and Fig. 2, the inversion heat dissipating device
4 is disposed
Date Recue/Date Received 2022-09-08
at one side of the inversion device 3 away from the housing 12. That is, the
inversion device 3
and the inversion heat dissipating device 4 both are disposed on the same side
of the housing
12, and the inversion device 3 is located between the housing 12 and the
inversion heat
dissipating device 4.
[0078] In the case that the inversion device 3 and the inversion heat
dissipating device
4 are disposed at different sides of the housing 12 respectively, the
inversion device 3 and the
inversion heat dissipating device 4 are located on different surfaces of the
housing 12, which
may increase the overall size of the variable-speed integrated machine.
Furthermore, in the case
that the two are located on different surfaces of the housing 12, because the
inversion heat
dissipating device 4 adopts the liquid-cooling heat dissipating way to perform
the heat
dissipation on the inversion device 3, a length of a cooling pipeline for
supplying the cooling
liquid needs to be longer, which may affect the heat dissipating effect of the
inversion heat
dissipating device 4 on the inversion device 3.
[0079] In the variable-speed integrated machine of at least one embodiment
of the
present disclosure, the inversion device 3 and the inversion heat dissipating
device 4 are located
at the same side of the housing 12, which not only makes the structure of the
variable-speed
integrated machine more compact, but also can ensure the heat dissipating
effect of the
inversion heat dissipating device 4 on the inversion device 3.
[0080] For example, as shown in Fig. 1, the inversion heat dissipating
device 4 includes
an inversion cooling plate 41 (also referred to as water cooling plate), an
inversion cooling
liquid storage assembly 42 and an inversion fan assembly 43. The inversion
cooling plate 41,
the inversion cooling liquid storage assembly 42 and the inversion fan
assembly 43 are
disposed at the first side Si, for example, on the top surface Fl of the
housing 12 sequentially.
That is, the inversion cooling plate 41 is disposed at one side of the
inversion device 3 away
from the housing 12. The inversion cooling liquid storage assembly 42 is
disposed on one side
of the inversion cooling plate 41 away from the housing 12. The inversion fan
assembly 43 is
disposed on one side of the inversion cooling liquid storage assembly 42 away
from the housing
12.
[0081] For example, as shown in Fig. 2, the inversion device 3 is located
between the
top surface Fl of the housing 12 and the inversion cooling plate 41. The
inversion device 3
16
Date Recue/Date Received 2022-09-08
includes a first surface BM1 close to the housing 12 and a second surface BM2
away from the
housing 12. That is, the first surface BM1 and the second surface BM2 are
opposite to each
other in a direction (such as the y direction shown in the drawing)
perpendicular to the output
shaft 14, and the first surface BM1 is closer to the housing 12 than the
second surface BM2.
The inversion cooling plate 41 is located on the second surface BM2 and is in
direct contact
with the second surface BM2. In this way, when the cooling liquid is
introduced into the
inversion cooling plate 41, since the inversion cooling plate 41 contacts the
second surface
BM2 of the inversion device 3, it is beneficial to realize the heat conduction
effect, so that the
inversion device 3 can be cooled more effectively.
[0082] For example, the inversion cooling plate 41 overlaps the inversion
device 3 in a
direction (such as the y direction shown in the drawing) perpendicular to the
output shaft 14,
for example, the overlapping may be partial overlapping or complete
overlapping. As shown
in Fig. 2, the inversion cooling plate 41 completely overlap the inversion
device 3 in the y
direction, that is, the inversion cooling plate 41 covers the second surface
BM2 of the inversion
device 3 completely, thus can increase the heat conduction area, thereby
realizing better heat
dissipating effect.
[0083] Fig. 5 is a structurally schematic diagram of the inversion cooling
plate of Fig.
1. For example, as shown in Fig. 5, the inversion cooling plate 41, for
example, includes an
inversion cooling passage 51. The inversion cooling passage 51 includes at
least one inversion
cooling pipe, an inversion cooling passage inlet 51i and an inversion cooling
passage outlet
51o. The at least one inversion cooling pipe, the inversion cooling passage
inlet 51i and the
inversion cooling passage outlet 510 are disposed at one side of the inversion
cooling plate 41
away from the inversion device 3, i.e. the upper side of the inversion cooling
plate 41 shown
in Fig. 2.
[0084] For example, the inversion cooling passage inlet 51i is communicated
with a
first port (such as a right port shown in the drawing) of the at least one
inversion cooling pipe.
The inversion cooling passage outlet 510 is communicated with a second port
(such as a left
port shown in the drawing) of the at least one inversion cooling pipe. The
second port is
different from the first port, and the first port and the second port are
opposite to each other in
the z direction.
17
Date Recue/Date Received 2022-09-08
[0085] When the inversion cooling liquid flows in the at least one
inversion cooling
pipe of the inversion cooling plate 41, heat exchange may be performed on the
inversion device
3 located below the inversion cooling plate 41, thereby achieving a purpose of
cooling the
inversion device 3. In order to enhance the cooling effect, the inversion
cooling plate 41 is in
direct contact with the inversion device 3. In an example, the inversion
cooling liquid includes
water.
[0086] For example, the inversion cooling passage 51 includes an inversion
cooling
pipe 51a and an inversion cooling pipe 51b. The inversion cooling pipe 51a and
the inversion
cooling pipe 51b share the inversion cooling passage inlet 51i and the
inversion cooling passage
outlet 51o. That is, the inversion cooling pipe 51a and the inversion cooling
pipe 51b both are
communicated with the inversion cooling passage inlet 51i, and the inversion
cooling pipe 51a
and the inversion cooling pipe 51b both are communicated with the inversion
cooling passage
outlet 510. After entering the inversion cooling passage inlet 51i, the
inversion cooling liquid
flows into the inversion cooling pipe 51a and the inversion cooling pipe 5 lb
respectively to
exchange heat with the inversion device 3, and then the inversion cooling
liquid after the heat
exchange is converged at the inversion cooling passage outlet 510 and flows
out.
[0087] In the embodiment of the present disclosure, by providing two
inversion cooling
pipes 51a and 5 lb, one shared inversion cooling passage inlet 51i and one
shared inversion
cooling passage outlet 510, not only can the heat exchange area of the water
cooling plate be
increased and the cooling effect be enhanced, but also the process for
manufacturing the
inversion cooling plate may be simplified, and the manufacturing cost is
reduced.
[0088] In at least some embodiments, the inversion cooling pipe 51a and the
inversion
cooling pipe 51b may have same or different pipeline layouts, for example, as
shown in Fig. 5,
The inversion cooling pipe 51a and the inversion cooling pipe 51b are in minor-
symmetry
about a center line 0102 of the inversion cooling plate 41. Since the
inversion cooling pipe
51a and the inversion cooling pipe 51b have the same pipeline layout, the
manufacturing
process of the inversion cooling plate is further simplified.
[0089] Fig. 5 only schematically illustrates an S-shaped pipeline direction
of the
inversion cooling pipe 51a and the inversion cooling pipe 5 lb. In other
embodiments of the
present disclosure, the inversion cooling pipe 51a and the inversion cooling
pipe 51b may also
18
Date Recue/Date Received 2022-09-08
have other pipeline layouts, such as a sawtooth shape, a straight-line shape,
etc., which is not
limited by the embodiment of the present disclosure.
[0090] Fig. 6 is a structurally schematic diagram of the inversion device
and the
inversion heat dissipating device of Fig. 2. For example, as shown in Fig. 6,
the inversion
cooling liquid storage assembly 42 is disposed at one side of the inversion
cooling plate 41
away from the inversion device 3 and includes an inversion cooling liquid
storage chamber 52
communicated with the inversion cooling plate 41, which is used to store the
inversion cooling
liquid and supply the inversion cooling liquid to the inversion cooling plate
41. The inversion
cooling liquid here refers to the cooling liquid for cooling the inversion
device 3.
[0091] For example, a first end (such as the right end shown in the
drawing) of the
inversion cooling liquid storage chamber 52 is connected with the inversion
cooling passage
inlet 51i through a first connecting pipe 53. A second end (such as the left
end shown in the
drawing) of the inversion cooling liquid storage chamber 52 is connected with
the inversion
cooling passage outlet 510 through a second connecting pipe 54. The second end
is different
from the first end, and the first end and the second end are opposite to each
other in the z
direction. In the embodiments of the present disclosure, the inversion cooling
liquid flows into
the inversion cooling plate 41 from the inversion cooling liquid storage
chamber 52 through
the first connecting pipe 53 and flows back to the inversion cooling liquid
storage chamber 52
from the inversion cooling plate 41 through the second connecting pipe 54,
thereby achieving
a purpose of cyclic use.
[0092] For example, the inversion fan assembly 43 is disposed at one side
of the
inversion cooling liquid storage assembly 42 away from the inversion cooling
plate 41 and
performs the heat dissipation on the inversion cooling liquid in the inversion
cooling liquid
storage chamber 52. The total number of the inversion fan assemblies 43 may be
one or more.
The specific total number of the inversion fan assemblies 43 may be determined
by the ordinary
skilled in the art according to an area of the inversion cooling liquid
storage assembly 42, which
is not limited by the embodiment of the present disclosure.
[0093] For example, the inversion fan assembly 43 includes a first
inversion fan
assembly 43a and a second inversion fan assembly 43b. The first inversion fan
assembly 43a
and the second inversion fan assembly 43b are disposed side by side on the
inversion cooling
19
Date Recue/Date Received 2022-09-08
liquid storage chamber 52 along the z direction.
[0094] For example, the first inversion fan assembly 43a includes a heat
dissipating fan
45 and a heat dissipating electric motor 47. The heat dissipating electric
motor 47 is disposed
on the inversion cooling liquid storage assembly 42, and the heat dissipating
fan 45 is located
between the heat dissipating electric motor 47 and the inversion cooling
liquid storage
assembly 42. When the heat dissipating electric motor 47 works, an impeller of
the heat
dissipating fan 45 is driven to rotate, and the wind generated by the rotation
of the impeller is
used to cool the inversion cooling liquid in the inversion cooling liquid
storage assembly 42
(such as the inversion cooling liquid storage chamber 52).
[0095] For example, the second inversion fan assembly 43b includes a heat
dissipating
fan 46 and a heat dissipating electric motor 48. The heat dissipating electric
motor 48 is
disposed on the inversion cooling liquid storage assembly 42, and the heat
dissipating fan 46
is located between the heat dissipating electric motor 48 and the inversion
cooling liquid
storage assembly 42. When the heat dissipating electric motor 48 works, an
impeller of the heat
dissipating fan 46 is driven to rotate, and the wind generated by the rotation
of the impeller is
used to cool the inversion cooling liquid in the inversion cooling liquid
storage assembly 42
(such as the inversion cooling liquid storage chamber 52).
[0096] Compared with the case where the inversion cooling liquid storage
chamber 52
is provided with only one inversion fan assembly, the first inversion fan
assembly 43a and the
second inversion fan assembly 43b may be used simultaneously to cool the
inversion cooling
liquid in the inversion cooling liquid storage chamber 52, thereby enhancing
the cooling effect.
[0097] The working principle of the inversion heat dissipating device 4 is
described
below. As shown in Fig. 6, when the inversion heat dissipating device 4 works,
the inversion
cooling liquid flows into the inversion cooling passage 51 from the inversion
cooling liquid
storage chamber 52 through the first connecting pipe 53 and the inversion
cooling passage inlet
51i, and then flows in the inversion cooling passage 51 along a first moving
direction vi.
During the flowing process, the inversion cooling liquid takes away the heat
generated by a
heating component in the inversion device 3 in heat exchange way to cool the
heating
component. When the inversion cooling liquid performs heat exchange on the
heating
component, the inversion cooling liquid with rising temperature flows back
into the inversion
Date Recue/Date Received 2022-09-08
cooling liquid storage chamber 52 through the inversion cooling passage outlet
510 and the
second connecting pipe 54. Then, the inversion cooling liquid flowing back
into the inversion
cooling liquid storage chamber 52 flows along a second moving direction v2. At
the same time,
the first inversion fan assembly 43a and the second inversion fan assembly 43b
cool the
inversion cooling liquid. In this way, the cooled inversion cooling liquid
flows back to the
inversion cooling plate 41 again to continue to cool the inversion device 3.
It should be noted
that in order to avoid the current leakage, the inversion cooling liquid of
the embodiment of
the present disclosure is isolated electrically from an electrical portion in
the inversion device
3.
[0098] In the inversion heat dissipating device 4 of the embodiment of the
present
disclosure, by providing the inversion cooling plate 41, the inversion cooling
liquid storage
assembly 42 and the inversion fan assembly 43, not only can the heat
dissipating effect for the
inversion device 3 be improved, but also the overall size of the variable-
speed integrated
machine is reduced. Furthermore, since the inversion cooling liquid is
recyclable, the
production cost is reduced, the discharging of waste water is also reduced,
and the
environmental pollution is avoided.
[0099] As shown in Fig. 1 to Fig. 4, for example, the driving heat
dissipating device 2
performs the heat dissipation on the driving device 1 only in the air-cooling
heat dissipating
way. In this case, the driving heat dissipating device 2 only includes an air-
cooling heat
dissipating mechanism.
[00100] In at least some embodiments, the inversion device 3 and at least
one portion of
the air-cooling heat dissipating mechanism are disposed on the same side of
the housing 12.
For example, as shown in Fig. 1 and Fig. 2, the air-cooling heat dissipating
mechanism 2A
includes an air-output assembly 20 communicated with the cavity 13 of the
housing 12. For
example, the air-output assembly 20, the inversion device 3 and the inversion
heat dissipating
device 4 are disposed on the same side (such as the first side Si shown in the
drawing) of the
housing 12. For example, the air-output assembly 20, the inversion device 3
and the inversion
heat dissipating device 4 are disposed on the same top surface Fl of the
housing 12, which
saves the space occupied by the driving heat dissipating device 2, the
inversion device 3 and
the inversion heat dissipating device 4 on the variable-speed integrated
machine, so that the
21
Date Recue/Date Received 2022-09-08
overall size of the variable-speed integrated machine is reduced. When the
variable-speed
integrated machine with a small size is applied to the wellsite apparatus, due
to the small overall
size of the variable-speed integrated machine, the occupied space on the
wellsite apparatus is
also reduced, thereby providing more space for installing other apparatuses on
the wellsite
apparatus.
[00101] As shown in Fig. 2, for example, the driving device 1 includes a
first end El
and a second end E2 which are opposite to each other in the x direction; for
example, the first
end El is close to the output shaft 14 and is an shaft extension end of the
driving device 1. The
second end E2 is away from the output shaft 14 and is a non-shaft extension
end of the driving
device 2. The inversion device 3 and the inversion heat dissipating device 4
are disposed on
part of the top surface Fl of the housing 12 close to the first end El in a
lamination manner,
whereas the air-output assembly 20 is disposed on the other part of the top
surface Fl of the
housing 12 close to the second end E2. The air-output assembly 20 and the
inversion device 3
(and the inversion heat dissipating device 4) are disposed at the first end El
and the second end
E2 respectively, so that not only can the space of the top surface of the
housing 12 be used fully,
but also the mutual interference of the driving heat dissipating device and
the inversion heat
dissipating device 4 during heat dissipation can be avoided.
[00102] In at least some embodiments, the total number of the air-output
assemblies 20
may be one or more. When the air-cooling heat dissipating mechanism 2A
includes a plurality
of air-output assemblies, the plurality of air-output assemblies are used to
perform the heat
dissipation simultaneously on the driving device 1, so that the heat
dissipating effect for the
driving device 1 can be enhanced.
[00103] For example, as shown in Fig. 1 and Fig. 2, the air-cooling heat
dissipating
mechanism 2A includes a first air-output assembly 20a and a second air-output
assembly 20b.
The first air-output assembly 20a and the second air-output assembly 20b are
disposed side by
side on the top surface Fl along the z direction. The first air-output
assembly 20a, the second
air-output assembly 20b, the inversion device 3 and the inversion heat
dissipating device 4 all
are disposed on the same side of the housing 12, for example, on the same top
surface Fl. The
first air-output assembly 20a, the second air-output assembly 20b, the
inversion device 3 and
the inversion heat dissipating device 4 are disposed on the same top surface
Fl of the housing
22
Date Recue/Date Received 2022-09-08
12, which further saves the space occupied by the driving heat dissipating
device 2, the
inversion device 3 and the inversion heat dissipating device 4 on the variable-
speed integrated
machine, so that the overall size of the variable-speed integrated machine is
reduced.
Furthermore, the heat dissipating effect of the driving heat dissipating
device 2 for the driving
device 1 is improved.
[00104] In at least some embodiments, the first air-output assembly 20a and
the second
air-output assembly 20b may have the same structure or may have different
structures. When
the first air-output assembly 20a and the second air-output assembly 20b have
the same
structure, the layout design difficulty of the air-output assembly on the
housing 12 may be
reduced, and the manufacturing process may be simplified.
[00105] For example, the first air-output assembly 20a includes a heat
dissipating fan
21a, an exhaust-air duct 22a and a fan volute 25a. The heat dissipating fan
21a is disposed on
the top surface Fl of the housing 12, and the fan volute 25a is located
between the heat
dissipating fan 21a and the top surface Fl. As shown in Fig. 2, a first side
251 (such as an upper
side shown in the drawing) of the fan volute 25a is communicated with the heat
dissipating fan
21a, a second side 252 (such as a lower side shown in the drawing) is
communicated with the
cavity 13 of the housing 12, and a third side 253 (such as a left side shown
in the drawing) is
communicated with the exhaust-air duct 22a. For example, the first side 251
and the second
side 252 are opposite to each other in the y direction, and the third side 253
is located between
the first side 251 and the second side 252 and located at one side of the fan
volute 25a away
from the inversion device 3. The fan volute 25a is communicated respectively
with the heat
dissipating fan 21a, the exhaust-air duct 22a and the cavity 13, which is
beneficial to pumping
air in the cavity 13 into the exhaust-air duct 22a for discharge when the heat
dissipating fan
21a works.
[00106] For example, as shown in Fig. 2, the exhaust-air duct 22a includes
an air outlet
23a. For example, the air outlet 23a faces a direction away from the housing
12, such as faces
the top of the variable-speed integrated machine. The air outlet 23a is
disposed in the direction
away from the housing 12, so that the air with high temperature is easily
discharged from the
exhaust-air duct 22a. Moreover, when the air is discharged towards the top of
the variable-
speed integrated machine through the air outlet 23a, the interference or
impact of the output air
23
Date Recue/Date Received 2022-09-08
on the inversion device 3 or the inversion heat dissipating device 4 is
avoided, and the heat
dissipating effect of the inversion heat dissipating device 4 on the inversion
device 3 is further
ensured.
[00107] In the practical wellsite, there may be windy or rainy weather, if
there is no
shelter on the air outlet 23a, sand or rain may fall into the exhaust-air duct
22a. Especially when
encountering extreme weather such as sandstorm, the exhaust-air duct 22a may
be blocked by
a large amount of sand falling into the exhaust-air duct.
[00108] For example, the air outlet 23a is provided with an air-outlet
cover plate 24a,
and the air-outlet cover plate 24a, for example, is rotatably connected to the
air outlet 23a, so
that the air-outlet cover plate 24a covers the air outlet 23a. In this way,
when it is necessary to
cover the air outlet 23a, the air-outlet cover plate 24a covers the air outlet
23a through a simple
rotating operation, thereby preventing external sand or rain from falling into
the exhaust-air
duct 22a and from blocking the exhaust-air duct. For example, when the area of
the air-outlet
cover plate 24a is larger than or equal to the area of the air outlet 23a, a
better sheltering effect
is achieved.
[00109] The embodiment of the present disclosure does not limit a
connection way
between the air-outlet cover plate 24a and the exhaust-air duct 22a, as long
as the air-outlet
cover plate 24a can move relative to the air outlet 23a, for example, the two
may be hinged or
connected by screws or in other ways.
[00110] Fig. 2 schematically illustrates only one air-outlet cover plate
24a, and in other
embodiments of the present disclosure, a plurality of air-outlet cover plates
may also be
provided on the air outlet 23a. For example, the air outlet 23a is provided
with two opposite
air-outlet cover plates. When the two air-outlet cover plates are in a closed
state, the air outlet
23a is covered; and when the two air-outlet cover plates are in an open state,
the air outlet 23a
is uncovered, and then the air in the exhaust-air duct 22a may be discharged
from the air outlet
23a. Thus, the purpose of sheltering the air outlet 23a may also be realized
by closing the two
air-outlet cover plates. Therefore, the embodiment of the present disclosure
does not limit the
total number of the air-outlet cover plates 24a.
[00111] For example, as shown in Fig. 1, the first air-output assembly 20a
and the second
air-output assembly 20b have the same structure, and the first air-output
assembly 20a and the
24
Date Recue/Date Received 2022-09-08
second air-output assembly 20b have the same air-output direction.
[00112] For example, the second air-output assembly 20b includes a heat
dissipating fan
21b, an exhaust-air duct 22b and a fan volute 25b. The heat dissipating fan
21b is disposed on
the top surface Fl of the housing 12, and the fan volute 25b is located
between the heat
dissipating fan 21b and the top surface Fl. A first side (not shown, which may
refer to the first
side 251 of the fan volute 25a of the first fan assembly) of the fan volute
25b is communicated
with the heat dissipating fan 21b, a second side (not shown, which may refer
to the second side
252 of the fan volute 25a of the first fan assembly) is communicated with the
cavity 13 of the
housing 12, and a third side (not shown, which may refer to the first side 253
of the fan volute
25a of the first fan assembly) is communicated with the exhaust-air duct 22b.
For example, the
first side and the second side are opposite to each other in the y direction,
and the third side is
located between the first side and the second side of the fan volute 25b and
located at one side
of the fan volute 25b away from the inversion device 3. In the embodiment of
the present
disclosure, the fan volute 25b is communicated respectively with the heat
dissipating fan 21b,
the exhaust-air duct 22b and the cavity 13, which is conducive to discharging
the air in the
cavity 13 from the exhaust-air duct 22b for discharge when the heat
dissipating fan 21b works.
[00113] For example, the exhaust-air duct 22b includes an air outlet 23b
and an air-outlet
cover plate 24b. For example, the air outlet 23b has the same orientation as
the air outlet 23a
of the second air-output assembly 20b and also faces the direction away from
the housing 12,
for example, faces the top of the variable-speed integrated machine. The air
outlet 23b is
disposed in the same direction as the air outlet 23a of the second air-output
assembly 20b, so
that the interference or impact of the output air on the inversion device 3 or
the inversion heat
dissipating device 4 is avoided, and the heat dissipating effect of the
inversion heat dissipating
device 4 on the inversion device 3 is further ensured.
[00114] In the variable-speed integrated machine provided by the above
embodiment, in
the process that the air-cooling heat dissipating mechanism 2A is used to
perform the heat
dissipation on the driving device 1, the heat dissipating fans 21a and 21b are
started, then the
heat dissipating fans 21a and 21b pump the air in the cavity 13 into the fan
volutes 25a and 25b
and discharge the air towards the top of the variable-speed integrated machine
through the air
outlets 23a and 23b of the exhaust-air ducts 22a and 22b, (as shown by the
black thick arrow
Date Recue/Date Received 2022-09-08
in Fig. 2), thus achieve the purpose of cooling the electric motor 10 through
the flow of the air.
[00115] In at least some embodiments, the bottom of the exhaust-air duct
may be
provided with a liquid outlet. For example, as shown in Fig. 3, the bottom of
the exhaust-air
duct 22a close to the housing 13 is provided with a liquid outlet 26a, and the
bottom of the
exhaust-air duct 22b close to the housing 13 is provided with a liquid outlet
26b. The liquid
outlets 26a and 26b are configured to discharge the liquid (such as rain)
flowing into the
exhaust-air duct 22a. Further, for example, the liquid outlets 26a and 26b may
also be connected
with a guide pipe, such as a hose or a hard pipe, etc., which is used to guide
the discharged
liquid into a collection apparatus such as a water barrel and the like,
thereby preventing the
direct dripping of the liquid from the liquid outlet from impacting the
driving device.
[00116] When in stormy weather, it is possible that the rain seeps into the
exhaust-air
ducts 22a and 22b and is accumulated at the bottoms of the exhaust-air ducts
22a and 22b. If
the time lasts long, the accumulated water may flow back into a fan turbine,
affecting the heat
dissipating effect of the fan heat dissipating mechanism on the driving
device. In the
embodiment of the present disclosure, the bottoms of the exhaust-air ducts 22a
and 22b are
provided with the liquid outlets 26a and 26b, which can discharge the
accumulated water in the
exhaust-air ducts 22a and 22b, so that the impact of the accumulated water on
the heat
dissipating effect can be reduced and even eliminated.
[00117] For example, as shown in Fig. 2, Fig. 3 and Fig. 7, the air-cooling
heat
dissipating mechanism 2A further includes an air-input assembly 30. For
example, the air-input
assembly 30 is disposed at the other side of the housing 13 than the first
side, for example, on
the second side S2. In the embodiment of the present disclosure, the total
number of the air
inlet assemblies 30 may be one or more. When the air-cooling heat dissipating
mechanism 2A
includes a plurality of air inlet assemblies, the total amount of the air
sucked into the driving
device 1 may be increased, thereby improving the heat dissipating efficiency.
[00118] For example, as shown in Fig. 2, the air-cooling heat dissipating
mechanism 2A
includes a first air-input assembly 30a and a second air-input assembly 30b,
and the first air-
input assembly 30a and the second air-input assembly 30b are disposed side by
side on the
second side S2 of the housing 13 along the x direction. For example, the first
air-input assembly
30a is close to the second end E2 of the housing 13 and away from the first
end El of the
26
Date Recue/Date Received 2022-09-08
housing 13; and the second air-input assembly 30b is close to the first end El
of the housing
13 and away from the second end E2 of the housing 13. The first air-input
assembly 30a and
the second air-input assembly 30b are disposed respectively on the first end
El and the second
end E2 of the housing 13, so that the bottom space of the housing is used
fully and reasonably,
and better heat dissipating effect is achieved.
[00119] For example, as shown in Fig. 3, the first air-input assembly 30a
includes two
air inlets 31a disposed on the second side S2 of the housing. Further, the two
air inlets 31a are
disposed side by side on the bottom surface F2 of the housing 12 along the z
direction. In the
embodiment of the present disclosure, the total number of the air inlets 31a
may be one or more.
When the first air-input assembly 30a includes a plurality of air inlets 31a,
the heat dissipating
effect on the driving device 1 can be improved.
[00120] For example, as shown in Fig. 3, the second air-input assembly 30b
includes
two air inlets 31b disposed on the second side S2 of the housing. Further, the
two air inlets 31b
are disposed side by side on the bottom surface F2 of the housing 12 along the
z direction. In
the embodiment of the present disclosure, the total number of the air inlets 3
lb may be one or
more. When the second air-input assembly 30b includes a plurality of air
inlets 31, the heat
dissipating effect on the driving device 1 can be improved.
[00121] In the variable-speed integrated machine provided by the above
embodiment, in
the process that the air-cooling heat dissipating mechanism 2A is used to
perform the heat
dissipation on the driving device 1, when the heat dissipating fans 21a and
21b are started,
external air is sucked into the cavity 13 through the two air inlets 31a and
two air inlets 3 lb on
the bottom surface F2 of the housing 12 (as shown by the black thick arrow in
Fig. 2) to cool
the electric motor 10 disposed in the cavity 13, and then the air is
discharged from the exhaust-
air ducts 22a and 22b under the pumping effect of the heat dissipating fans
21a and 21b. It
should be understood that the air sucked into the cavity 13 pass by the inner
cavity 150 (as
shown in Fig. 11) of the stator 15, thereby realizing the heat dissipating
effect on the electric
motor 10.
[00122] In at least some embodiments, the first air-input assembly 30a and
the second
air-input assembly 30b may have the same structure or may have different
structures. When
the first air-input assembly 30a and the second air-input assembly 20b have
the same structure,
27
Date Recue/Date Received 2022-09-08
the manufacturing process is simplified.
[00123] The embodiment of the present disclosure is described by taking the
case where
the first air-input assembly 30a and the second air-input assembly 30b have
the same structure
as an example; and moreover, the embodiment of the present disclosure only
describes the first
air-input assembly 30a, and a specific structure and configuration way of the
second air-input
assembly 30b may refer to the first air-input assembly 30a and are not
repeated here.
[00124] Fig. 7 is an enlarged schematic diagram of a bottom of the variable-
speed
integrated machine of Fig. 3. As shown in Fig. 7, for example, the first air-
input assembly 30a
further includes two grooves 32a arranged on the second side S2 of the housing
12. Each groove
32a is recessed inwardly in a direction facing towards the electric motor 10.
The two grooves
32a are in one-to-one correspondence with the two air inlets 31a, that is,
each air inlet 31a is
disposed in one of the two grooves 32a.
[00125] For example, as shown in Fig. 7, the first air-input assembly 30a
further includes
two protection meshes 33a, and the two protection meshes 33a are in one-to-one
correspondence with the two air inlets 31a, that is, each protection mesh 33a
covers one air
inlet 31a. If there is no protection mesh on the air inlet 31a, foreign
matters may be sucked into
the cavity. The air inlet is provided with the protection mesh, which can
prevent the foreign
matters from being sucked into the cavity 13 of the housing 12, thereby
avoiding the impact on
the heat dissipating effect.
[00126] For example, as shown in Fig. 2 and Fig. 7, the plane P1 where each
protection
mesh 33a is located is not coplanar with partial or whole surface P of the
housing 12. For
example, the plane P1 where the protection mesh 33a is located is closer to
the electric motor
than the outer surface P of the housing 12. That is, the whole bottom surface
of the housing
12 is not in a same plane. When the variable-speed integrated machine is
applied to the wellsite
apparatus such as the electric-driven fracturing truck, the bottom of the
driving device 1 needs
to be placed on the electric-driven fracturing truck, that is, the bottom
surface of the housing
12 may contact the electric-driven fracturing truck. The plane P1 where the
protection mesh
33a is located is configured as being closer to the electric motor 10 than the
outer surface P of
the housing 12, which is conducive for the external air to flow into the
cavity 13 more fluently
from the bottom of the driving device 1 via the air inlet 31a, thereby
ensuring that more air is
28
Date Recue/Date Received 2022-09-08
sucked into the cavity 13 in the heat dissipating process.
[00127] Fig. 8 is a structurally schematic diagram of the variable-speed
integrated
machine according to another embodiment of the present disclosure. For
example, Fig. 8 is a
left view of the variable-speed integrated machine according to another
embodiment of the
present disclosure. The viewing angle of the left view is the same with that
of the left view of
the variable-speed integrated machine of Fig. 1.
[00128] As shown in Fig. 8, the variable-speed integrated machine provided
by at least
one embodiment of the present disclosure includes a driving device 1, a
driving heat dissipating
device 2, an inversion device 3 and an inversion heat dissipating device 4.
The driving heat
dissipating device 2 adopts an air-cooling heat dissipating mechanism 2B. The
air-cooling heat
dissipating mechanism 2B includes a third air-output assembly 20c, a fourth
air-output
assembly 20d and an air-input assembly 30.
[00129] In Fig. 8, the specific structures and arrangement of the driving
device 1, the
inversion device 3, the inversion heat dissipating device 4 and the air-input
assembly 30 may
refer to the description of the foregoing embodiments and are not repeated
here.
[00130] The variable-speed integrated machine in Fig. 8 differs from that
in Fig. 1 in
that the air-cooling heat dissipating mechanism 2B in Fig. 8 includes the
third air-output
assembly 20c and the fourth air-output assembly 20d, and the two have the same
structure but
different air-output directions.
[00131] As shown in Fig. 8, the third air-output assembly 20c includes a
heat dissipating
fan 21c, an exhaust-air duct 22c and a fan volute 25c. The exhaust-air duct
22c includes an air
outlet 23c and an air-outlet cover plate 24c. The fourth air-output assembly
20d includes a heat
dissipating fan 21d, an exhaust-air duct 22d and a fan volute 25d. The exhaust-
air duct 22d
includes an air outlet 23d and an air-outlet cover plate 24d. The air-output
direction of the
exhaust-air duct 22c of the third air-output assembly 20c is different from
that of the exhaust-
air duct 22d of the second air-output assembly 20d, that is, the air outlet
23c and the air outlet
23d have different orientations. For example, as shown by black arrows at the
air outlets 23c
and 23d in Fig. 8, the air outlet 23c faces towards, for example, the left
upper direction, and
the air outlet 23d faces towards, for example, the right upper direction.
[00132] Although the air outlets 23c and 23d have different orientations,
both of them
29
Date Recue/Date Received 2022-09-08
discharge the air towards the top space of the variable-speed integrated
machine. When the
variable-speed integrated machine is applied to the wellsite apparatus such as
the electric-
driven fracturing truck, even if the transverse distance between the two
electric-driven
fracturing trucks is small, the heat dissipating effect of the two electric-
driven fracturing trucks
is not affected.
[00133] As shown in Fig. 8, the heat dissipating fan 21c is disposed on the
top surface
Fl of the housing 12, and the fan volute 25c is located between the heat
dissipating fan 21c and
the top surface Fl. A first side 261 (such as the upper side shown in the
drawing) of the fan
volute 25c is communicated with the heat dissipating fan 21c, a second side
262 (such as the
lower side shown in the drawing) is communicated with the cavity 13 of the
housing 12, and a
third side 263 (such as the right side shown in the drawing) is communicated
with the exhaust-
air duct 22c. For example, the first side 261 and the second side 262 are
opposite to each other
in the y direction, and the third side 263 is located between the first side
261 and the second
side 262 and located at one side of the fan volute 25c away from the fan
volute 25d. In the
embodiment of the present disclosure, the fan volute 25c is communicated
respectively with
the heat dissipating fan 21c, the exhaust-air duct 22c and the cavity 13,
which is conducive to
discharging the air in the cavity 13 from the exhaust-air duct 22c for
discharge when the heat
dissipating fan 21c works.
[00134] As shown in Fig. 8, the heat dissipating fan 21d is disposed on the
top surface
Fl of the housing 12, and the fan volute 25d is located between the heat
dissipating fan 21d
and the top surface Fl. A first side 271 (such as the upper side shown in the
drawing) of the fan
volute 25d is communicated with the heat dissipating fan 21d, a second side
272 (such as the
lower side shown in the drawing) is communicated with the cavity 13 of the
housing 12, and a
third side 273 (such as the left side shown in the drawing) is communicated
with the exhaust-
air duct 22d. For example, the first side 271 and the second side 272 are
opposite to each other
in the y direction, the third side 273 is located between the first side 271
and the second side
272 and located at one side of the fan volute 25d away from the fan volute
25c. In the
embodiment of the present disclosure, the fan volute 25d is communicated
respectively with
the heat dissipating fan 21d, the exhaust-air duct 22d and the cavity 13,
which is conducive to
discharging the air in the cavity 13 from the exhaust-air duct 22d for
discharge when the heat
Date Recue/Date Received 2022-09-08
dissipating fan 21d works.
[00135] In the variable-speed integrated machine provided by the above
embodiment, in
the process that the air-cooling heat dissipating mechanism 2B shown in Fig. 8
is used to
perform the heat dissipation on the driving device, the heat dissipating fans
21c and 21d are
started, and the external air is sucked into the cavity 13 through the air-
input assembly 30
disposed on the bottom of the driving device 1 to cool the electric motor 10
disposed in the
cavity 13. Then, under the pumping effect of the heat dissipating fans 21a and
21b, the air is
discharged from the air outlet 23c of the exhaust-air duct 22c and the air
outlet 23d of the
exhaust-air duct 22d, thereby achieving the cooling effect on the electric
motor 10.
[00136] Similar to Fig. 1, the third air-output assembly 20c, the fourth
air-output
assembly 20d, the inversion device and the inversion heat dissipating device
in Fig. 8 all are
disposed on the same side of the housing 12, for example, on the same top
surface Fl. The third
air-output assembly 20c, the fourth air-output assembly 20d, the inversion
device and the
inversion heat dissipating device are disposed on the same side of the housing
12, which further
saves the space occupied by the driving heat dissipating device, the inversion
device and the
inversion heat dissipating device on the variable-speed integrated machine, so
that the overall
size of the variable-speed integrated machine is reduced.
[00137] Fig. 9 is a schematically perspective view of the variable-speed
integrated
machine according to another embodiment of the present disclosure. Fig. 10 is
a structurally
schematic diagram of the variable-speed integrated machine of Fig. 9.
[00138] As shown in Fig. 9 and Fig. 10, the variable-speed integrated
machine provided
by at least one embodiment of the present disclosure includes a driving device
1, a driving heat
dissipating device 2, an inversion device 3 and an inversion heat dissipating
device 4.
[00139] In Fig. 9, the specific structures and arrangement of the driving
device 1, the
inversion device 3, and the inversion heat dissipating device 4 may refer to
the description of
the foregoing embodiments and are not repeated here.
[00140] The variable-speed integrated machine in Fig. 9 differs from that
in Fig. 1 in
that the driving heat dissipating device 2 in Fig. 9 adopts the liquid-cooling
heat dissipating
way to perform the heat dissipation on the driving device 1. In this case, the
driving heat
dissipating device 2 only includes a liquid-cooling heat dissipating mechanism
2C. In the
31
Date Recue/Date Received 2022-09-08
variable-speed integrated machine of Fig. 9, the inversion heat dissipating
device 4 and the
driving heat dissipating device 2 both adopt the liquid-cooling heat
dissipating way.
[00141] In at least some embodiments, the inversion device 3 and at least
one portion of
the liquid-cooling heat dissipating mechanism 2C are disposed on the same side
of the housing
12 of the driving device 1. For example, as shown in Fig. 9 and Fig. 10, the
liquid-cooling heat
dissipating mechanism 2C includes a first cooling assembly, a first cooling
liquid storage
assembly 202 and a first fan assembly 203. The first cooling liquid storage
assembly 202, the
first fan assembly 203, the inversion device 3 and the inversion heat
dissipating device 4 are
disposed on the same side (such as the first side Si of the housing 12 shown
in the drawing) of
the housing 12, for example, on the same top surface Fl. The first cooling
liquid storage
assembly 202, the first fan assembly 203, the inversion device 3 and the
inversion heat
dissipating device 4 are disposed on the same side of the housing 12, which
saves the space
occupied by the driving heat dissipating device 2, the inversion device 3 and
the inversion heat
dissipating device 4 on the variable-speed integrated machine, so that the
overall size of the
variable-speed integrated machine is reduced.
[00142] For example, as shown in Fig. 9, the first cooling liquid storage
assembly 202
and the first fan assembly 203 are disposed at the first side Si of the
housing 12 sequentially.
That is, the first fan assembly 203 is disposed on one side of the first
cooling liquid storage
assembly 202 away from the housing 12. The first cooling liquid storage
assembly 202 includes
an electric motor cooling liquid storage chamber 221 communicated with the
first cooling
assembly and used to store the cooling liquid and supply the electric motor
cooling liquid to
the first cooling assembly. Herein, the electric motor cooling liquid refers
to the cooling liquid
for cooling the driving device 1.
[00143] For example, as shown in Fig. 10, the electric motor cooling liquid
storage
chamber 221 includes an input end 221i and an output end 221o. The first
cooling assembly is
disposed in the housing 12 and includes a first cooling passage 201. The first
cooling passage
201 includes a first cooling passage inlet and a first cooling passage outlet.
The first cooling
passage inlet is connected with the output end 2210 of the electric motor
cooling liquid storage
chamber 221. The first cooling passage outlet is connected with the input end
221i. The first
cooling passage 201 is used to convey the electric motor cooling liquid to the
electric motor
32
Date Recue/Date Received 2022-09-08
10.
[00144] For example, the first cooling passage 201 includes a first cooling
pipe 211, a
second cooling pipe 212, a third cooling pipe 213, a first connecting branch
pipe 214 and a
second connecting branch pipe 215. The first cooling pipe 211, the second
cooling pipe 212,
the third cooling pipe 213, the first connecting branch pipe 214 and the
second connecting
branch pipe 215 each is configured to convey the electric motor cooling
liquid.
[00145] For example, the first cooling pipe 211 is connected with the
output end 2210
of the electric motor cooling liquid storage chamber 221 through the first
connecting branch
pipe 214; and the second cooling pipe 212 is connected with the input end 221i
of the electric
motor cooling liquid storage chamber 221 through the second connecting branch
pipe 215. The
third cooling pipe 213 is located between the first cooling pipe 211 and the
second cooling pipe
212 and connected with both of the first cooling pipe 211 and the second
cooling pipe 212. In
this way, the electric motor cooling liquid in the electric motor cooling
liquid storage chamber
221 may pass through the first connecting branch pipe 214, the first cooling
pipe 211, the third
cooling pipe 213, the second cooling pipe 212 and the second connecting branch
pipe 215
successively, and then flow back into the electric motor cooling liquid
storage chamber 221.
During flowing in the first cooling passage 201, the electric motor cooling
liquid takes away
the heat generated by the electric motor 10 in a heat exchange way, thereby
cooling the electric
motor 10.
[00146] In at least some embodiments, the total number of the third cooling
pipes 213
may be one or more, and when a plurality of third cooling pipes 213 are
provided, the cooling
effect on the electric motor 10 may be improved.
[00147] Fig. 11 is a schematically cross-sectional view of a stator in the
driving device
according to an embodiment of the present disclosure. For example, Fig. 11 is
a schematically
cross-sectional view of the stator 15 of the electric motor 10 in Fig. 9. In
Fig. 9 to Fig. 11, the
electric motor includes an output shaft 14, a stator 15 and a rotor 16. The
specific structures of
the output shaft 14, the stator 15 and the rotor 16 and arrangement thereof in
the driving device
may refer to the description of the foregoing embodiments and are not repeated
here.
[00148] For example, the electric motor 10 includes the stator 15; the
stator 15 includes
a body portion 151 and a stator winding 152; and the stator 15 defines an
inner cavity 150. The
33
Date Recue/Date Received 2022-09-08
rotor 16 is disposed in the inner cavity 150 of the stator 15. The body
portion 151 is, for example,
in a cylindrical shape and includes an inner side Cl close to the rotor 16 and
an outer side C2.
The inner side Cl and the outer side C2 are opposite to each other in a radial
direction of the
stator 15. The stator winding 152 is disposed on the inner side Cl of the body
portion 151, and
a plurality of third cooling pipes 213 are disposed on the outer side C2 of
the body portion 151.
[00149] For example, the plurality of third cooling pipes 213 are disposed
on partial or
whole peripheral portion of the outer side C2 of the body portion 151. When
the plurality of
third cooling pipes 213 are disposed in the whole peripheral portion of the
outer side C2 of the
body portion 151, the heat exchange area of the electric motor cooling liquid
is increased, and
the heat dissipating effect is improved.
[00150] For example, the plurality of third cooling pipes 213 are disposed
on the whole
peripheral portion of the body portion 151 at equal or unequal intervals. When
the plurality of
third cooling pipes 213 are disposed on the whole peripheral portion of the
outer side C2 of the
body portion 151 at equal intervals, the heat dissipation uniformity is
improved, and the overall
heat dissipating effect is further ensured.
[00151] For example, as shown in Fig. 9 and Fig. 10, the first fan assembly
203 is
disposed on the first cooling liquid storage assembly 202 to perform the heat
dissipation on the
electric motor cooling liquid in the electric motor cooling liquid storage
chamber 221. The total
number of the first fan assemblies 203 may be one or more. The specific total
number of the
first fan assemblies 203 may be determined by the ordinary skilled in the art
according to an
area of the first cooling liquid storage assembly 202, which is not limited by
the embodiment
of the present disclosure.
[00152] For example, the first fan assembly 203 includes a first heat
dissipating fan 204
and a first heat dissipating electric motor 205. The first heat dissipating
electric motor 205 is
disposed at one side of the electric motor cooling liquid storage chamber 221
away from the
housing 12, and the first heat dissipating fan 204 is located between the
first heat dissipating
electric motor 205 and the electric motor cooling liquid storage chamber 221.
When the first
heat dissipating electric motor 205 works, an impeller of the first heat
dissipating fan 204 is
driven to rotate, and the wind generated by the rotation of the impeller is
used to cool the
electric motor cooling liquid in the electric motor cooling liquid storage
assembly 202 (such as
34
Date Recue/Date Received 2022-09-08
the electric motor cooling liquid storage chamber 221).
[00153] In the variable-speed integrated machine provided by the above
embodiment, in
the process that the air-cooling heat dissipating mechanism 2C is used to cool
the driving device
1, the electric motor cooling liquid flows into the first cooling pipe 211,
the third cooling pipe
213 and the second cooling pipe 212 from the electric motor cooling liquid
storage chamber
221 through the first connecting branch pipe 214. In the flowing process, the
electric motor
cooling liquid takes away the heat generated by the electric motor 10 through
a heat exchange
way, thereby cooling the electric motor 10. After performing heat exchange
with the electric
motor 10, the electric motor cooling liquid with rising temperature flows back
into the electric
motor cooling liquid storage chamber 221 through the second connecting branch
pipe 215.
Since the electric motor cooling liquid is recyclable, not only is the
production cost reduced,
but also the discharging of waste water is reduced, and the environmental
pollution is avoided.
[00154] In at least some embodiments, since the driving device 1 adopts the
liquid-
cooling heat dissipating way, compared with the air-cooling heat dissipating
way, it is
unnecessary to form any openings on the housing 12 to be communicated with an
exhaust pipe.
Therefore, the housing 12 is basically in a hermetic state, so that the
interior of the housing is
isolated from the exterior. When explosion occurs outside the driving device
1, the explosion
probability of the electric motor 10 is reduced, thereby realizing the
explosion-proof function
of the electric motor. Since the inversion device 3 adopts the liquid-cooling
heat dissipating
way, the inversion device 3 also realizes the explosion-proof function,
thereby further
improving the overall explosion-proof effect of the variable-speed integrated
machine.
[00155] Fig. 12 is a schematically perspective view of the variable-speed
integrated
machine according to further another embodiment of the present disclosure.
Fig. 13 is a
structurally schematic diagram of the variable-speed integrated machine of
Fig. 12.
[00156] As shown in Fig. 12 and Fig. 13, the variable-speed integrated
machine provided
by at least one embodiment of the present disclosure includes a driving device
1, a driving heat
dissipating device, an inversion device 3 and an inversion heat dissipating
device. The
inversion heat dissipating device and the driving heat dissipating device both
adopt the liquid-
cooling heat dissipating way.
[00157] The variable-speed integrated machine in Fig. 12 differs from that
in Fig. 9 in
Date Recue/Date Received 2022-09-08
that the inversion heat dissipating device and the driving heat dissipating
device in Fig. 12
share the first cooling liquid storage assembly and the first fan assembly.
[00158] For example, as shown in Fig. 12 and Fig. 13, the driving device 1
includes an
electric motor 10 and a housing 12 for accommodating the electric motor 10.
The inversion
device 3 is disposed at the first side Si, for example, on the top surface Fl
of the housing 12,
and the inversion device 3 is electrically connected with the electric motor
10. The specific
structures of the electric motor 10 and the housing 12 may refer to the
description of the
foregoing embodiments and are not repeated here.
[00159] For example, the inversion device 3 covers partial top surface Fl
or whole top
surface Fl. When the inversion device 3 covers the whole top surface Fl, the
heat dissipating
area of the inversion heat dissipating device is increased, thereby improving
the heat dissipating
efficiency. The inversion device 3 covers partial top surface Fl, which is
conducive to
installation of additional apparatuses such as the air-cooling heat
dissipating mechanism (such
as the embodiment shown in Fig. 22 below) on the housing 12.
[00160] For example, the inversion heat dissipating device includes an
inversion cooling
plate 441 (also referred to as a water cooling plate) disposed at one side of
the inversion device
3 away from the housing 10. For example, the inversion cooling plate 441
includes an inversion
cooling passage 451. The specific structures of the inversion cooling plate
441 and the
inversion cooling passage 451 may refer to the description of the inversion
cooling plate 41
and the inversion cooling passage 51 in the foregoing embodiments and are not
repeated here.
[00161] For example, as shown in Fig. 13, the driving heat dissipating
device includes a
first cooling passage 401, a shared first cooling liquid storage assembly C202
and a shared first
fan assembly C203. At least one portion of the first cooling passage 401 is
disposed in the
cavity 13 defined by the housing 12. For example, the first cooling passage
401 includes a first
cooling pipe 411, a second cooling pipe 412 and third cooling pipes 413,
wherein the total
number of the third cooling pipes 413 is one or more. For example, a plurality
of third cooling
pipes 413 are disposed in the stator 15 of the electric motor 10. The specific
structure and
arrangement of the third cooling pipe 413 may refer to the above relevant
description of the
third cooling pipe 213 and are not repeated here.
[00162] For example, the shared first cooling liquid storage assembly C202
is disposed
36
Date Recue/Date Received 2022-09-08
at one side of the inversion cooling plate 441 away from the housing 12. The
shared first
cooling liquid storage assembly C202 includes a shared first cooling liquid
storage chamber
C221 which is used to store the cooling liquid and supply the cooling liquid
to the first cooling
passage 401 and the inversion cooling plate 441.
[00163] For example, the shared first cooling liquid storage chamber C221
includes an
input end C221i and an output end C221o. One end of the first cooling passage
401 is
communicated with the output end C2210 of the shared first cooling liquid
storage chamber
C221, and the other end is communicated with the input end C221i. The cooling
liquid flowing
out from the output end C2210 of the first cooling liquid storage chamber C221
flows through
the first cooling pipe 411, the third cooling pipe 413 and the second cooling
pipe 412
successively, and finally flows back to the shared first cooling liquid
storage chamber C221
through the input end C221i.
[00164] For example, one end of the inversion cooling passage 451 is
communicated
with the output end C2210 of the shared first cooling liquid storage chamber
C221, and the
other end is communicated with the input end C221i. The cooling liquid flowing
out from the
output end C2210 of the first cooling liquid storage chamber C221 cools the
inversion device
3 when flowing by the inversion cooling passage 451, and finally flows back to
the shared first
cooling liquid storage chamber C221 via the input end C221i.
[00165] It should be noted that the flowing direction of the cooling liquid
shown in the
drawings is only schematic, and in the practical production, the cooling
liquid may also flow
in other direction, for example an opposite direction, which is not limited by
the embodiment
of the present disclosure.
[00166] For example, the shared first fan assembly C203 is disposed at one
side of the
shared first cooling liquid storage assembly C202 away from the housing 12.
The shared first
fan assembly C203 includes a shared first heat dissipating fan C204 and a
shared first heat
dissipating electric motor 205.
[00167] For example, the shared first heat dissipating electric motor C205
is disposed at
one side of the shared first cooling liquid storage chamber C221 away from the
housing 12,
and the shared first heat dissipating fan C204 is located between the shared
first heat dissipating
electric motor C205 and the shared first cooling liquid storage chamber C221.
When the shared
37
Date Recue/Date Received 2022-09-08
first heat dissipating electric motor C205 works, the impeller of the shared
first heat dissipating
fan C204 is driven to rotate, and the wind generated by the rotation of the
impeller is used to
cool the cooling liquid in the shared first cooling liquid storage chamber
C221.
[00168] Fig. 12 only illustrates four shared first fan assemblies C203. It
should be
understood that the total number of the shared first fan assemblies C203 may
be one or more.
The specific total number of the shared first fan assemblies 203 may be
determined by the
ordinary skilled in the art according to an area of the shared first cooling
liquid storage chamber
C221, which is not limited by the embodiment of the present disclosure.
[00169] In the variable-speed integrated machine provided by the above
embodiment,
the inversion device 3, the inversion cooling plate 441, the shared first
cooling liquid storage
assembly C202 and the shared first fan assembly C203 all are disposed on the
same side of the
housing 12. By adopting the above arrangement, the space occupied by the
driving heat
dissipating device, the inversion device and the inversion heat dissipating
device on the
variable-speed integrated machine is reduced, so that the overall size of the
variable-speed
integrated machine is reduced.
[00170] In the variable-speed integrated machine provided by the above
embodiments,
by providing the shared first cooling liquid storage assembly C202 and the
shared first fan
assembly C203, the total volume of the driving heat dissipating device and the
inversion heat
dissipating device is reduced in comparison with the case in which the driving
device and the
inversion device have individual dissipating device, so that the two heat
dissipating devices are
more compact in structure, and the overall explosion-proof function of the
variable-speed
integrated machine is improved.
[00171] In at least some embodiments, the first cooling passage 401
disposed in the
electric motor 10 and the inversion cooling passage 415 disposed in the
inversion cooling plate
441 may be connected in parallel or in series. The connection way may be
determined by the
ordinary skilled in the prior art according to the practical need. The two
connection ways are
described below in conjunction with specific examples.
[00172] Fig. 14 to Fig. 19 schematically illustrate connection block
diagrams of
examples in which a first cooling passage and an inversion cooling passage are
connected to
each other in parallel.
38
Date Recue/Date Received 2022-09-08
[00173] As shown in Fig. 14 to Fig. 19, the first cooling passage 401
includes a first
cooling passage inlet 401i and a first cooling passage outlet 401o. The first
cooling passage
inlet 401i is connected with the output end 2210 of the shared first cooling
liquid storage
chamber C221. The first cooling passage outlet 4010 is connected with the
input end 221i. The
cooling liquid flows out from the output end C2210 of the shared first cooling
liquid storage
chamber C221 and enters the first cooling passage 401. When the cooling liquid
passes through
the electric motor 10, the electric motor 10 is cooled down. Finally, the
cooling liquid flows
back to the shared first cooling liquid storage chamber C221 via the input end
C221i.
[00174] As shown in Fig. 14 to Fig. 19, the inversion cooling passage 451
includes an
inversion cooling passage inlet 451i and an inversion cooling passage outlet
451o. The
inversion cooling passage inlet 451i is connected with the output end C2210 of
the shared first
cooling liquid storage chamber C221. The inversion cooling passage outlet 4510
is connected
with the input end C221i. The cooling liquid flows out from the output end
C2210 of the shared
first cooling liquid storage chamber C221 and enters the inversion cooling
passage 451. When
the cooling liquid passes through the inversion cooling plate 441, the
inversion device 3 is
cooled down. Finally, the cooling liquid flows back to the shared first
cooling liquid storage
chamber C221 via the input end C221i.
[00175] As shown in Fig. 14 to Fig. 19, the shared first fan assembly
utilizes the wind
generated by the rotation of the impeller to cool the cooling liquid flowing
back into the shared
first cooling liquid storage chamber C221 (as shown by an arrow of a "wind
path" in the
drawing).
[00176] In the variable-speed integrated machine provided by the above
embodiment,
the first cooling passage 401 and the inversion cooling passage 451 are
configured as being in
parallel connection, so that the damage of one cooling passage does not affect
the normal work
of the other cooling passage, and the maintenance or replacement is also
facilitated.
[00177] In at least some embodiments, in order to improve the flow capacity
of the
cooling liquid in the inversion cooling passage and the first cooling passage
and to enhance the
circulating reflux effect, one or more pumps may be provided on the first
cooling passage 401
and the inversion cooling passage 451.
[00178] As shown in Fig. 14, for example, the first cooling passage 401 and
the inversion
39
Date Recue/Date Received 2022-09-08
cooling passage 451 are provided respectively with a first pump G1 and a
second pump G2.
The first pump G1 is located on a portion of the first cooling passage 401
between the output
end C2210 and the electric motor 10 and at the upstream of the electric motor
10, so that the
flow capacity of the cooling liquid in the first cooling passage is increased.
The second pump
G2 is located on a portion of the inversion cooling passage 451 between the
output end C2210
and the inversion cooling plate 441 and at the upstream of the inversion
cooling plate 441, so
that the flow capacity of the cooling liquid in the inversion cooling passage
451 is increased.
[00179] As shown in Fig. 15, for example, the first cooling passage 401 and
the inversion
cooling passage 451 are provided respectively with the first pump G1 and the
second pump G2.
The first pump G1 is located on a portion of the first cooling passage 401
between the output
end C2210 and the electric motor 10 and at the upstream of the electric motor
10, so that the
flow capacity of the cooling liquid in the first cooling passage is increased.
The second pump
G2 is located on a portion of the inversion cooling passage 451 between the
input end C221i
and the inversion cooling plate 441 and at the downstream of the inversion
cooling plate 441,
so that the flow capacity of the cooling liquid in the inversion cooling
passage 451 is increased.
[00180] As shown in Fig. 16, for example, the first cooling passage 401 and
the inversion
cooling passage 451 are provided respectively with a first pump G1 and a
second pump G2.
The first pump G1 is located on a portion of the first cooling passage 401
between the input
end C221i and the electric motor 10 and at the downstream of the electric
motor 10, so that the
flow capacity of the cooling liquid in the first cooling passage is increased.
The second pump
G2 is located on a portion of the inversion cooling passage 451 between the
output end C2210
and the inversion cooling plate 441 and at the upstream of the inversion
cooling plate 441, so
that the flow capacity of the cooling liquid in the inversion cooling passage
451 is increased.
[00181] As shown in Fig. 17, for example, the first cooling passage 401 and
the inversion
cooling passage 451 are provided respectively with the first pump G1 and the
second pump G2.
The first pump G1 is located on a portion of the first cooling passage 401
between the input
end C221i and the electric motor 10 and at the downstream of the electric
motor 10, so that the
flow capacity of the cooling liquid in the first cooling passage is increased.
The second pump
G2 is located on a portion of the inversion cooling passage 451 between the
input end C221i
and the inversion cooling plate 441 and at the downstream of the inversion
cooling plate 441,
Date Recue/Date Received 2022-09-08
so that the flow capacity of the cooling liquid in the inversion cooling
passage 451 is increased.
[00182] As shown in Fig. 18, for example, the first cooling passage 401 and
the inversion
cooling passage 451 are provided with only one first pump Gl. The first pump
G1 is located
on a portion of the first cooling passage 401 between the input end C221i and
the electric motor
and at the downstream of the electric motor 10, so that the flow capacity of
the cooling
liquid in the first cooling passage is increased. At the same time, the first
pump G1 is also
located on a portion of the inversion cooling passage 451 between the input
end C221i and the
inversion cooling plate 441 and at the downstream of the inversion cooling
plate 441, so that
the flow capacity of the cooling liquid in the inversion cooling passage 451
is increased.
[00183] As shown in Fig. 19, for example, the first cooling passage 401 and
the inversion
cooling passage 451 are provided with only one first pump Gl. The first pump
G1 is located
on a portion of the first cooling passage 401 between the output end C2210 and
the electric
motor 10 and at the upstream of the electric motor 10, so that the flow
capacity of the cooling
liquid in the first cooling passage is increased. At the same time, the first
pump G1 is also
located on a portion of the inversion cooling passage 451 between the output
end C2210 and
the inversion cooling plate 441 and at the upstream of the inversion cooling
plate 441, so that
the flow capacity of the cooling liquid in the inversion cooling passage 451
can be increased.
[00184] Compared with the case where two pumps are used in Fig. 14 to Fig.
17, only
one pump is used in Fig. 18 and Fig. 19, so that the total number of the pumps
used can be
reduced, and the manufacturing cost can be reduced.
[00185] Fig. 20 and Fig. 21 schematically illustrate connection block
diagrams of
examples in which the first cooling passage and the inversion cooling passage
are connected
in series.
[00186] As shown in Fig. 20 and Fig. 21, the first cooling passage 401
includes a first
cooling passage inlet 401i and a first cooling passage outlet 401o. The
inversion cooling
passage 451 includes an inversion cooling passage inlet 451i and an inversion
cooling passage
outlet 451o. The inversion cooling passage inlet 451i is connected with the
output end C2210
of the shared first cooling liquid storage chamber C221, the inversion cooling
passage outlet
4510 is connected with the first cooling passage inlet 401i, and the first
cooling passage outlet
4010 is connected with the input end C221i.
41
Date Recue/Date Received 2022-09-08
[00187] When the cooling liquid flows out from the output end C2210 of the
shared first
cooling liquid storage chamber C221, the cooling liquid first enters the
inversion cooling plate
441 via the inversion cooling passage 451 to cool the inversion device 3; and
then the cooling
liquid enters the electric motor 10 via the first cooling passage 401 to cool
the electric motor
10. Finally, the cooling liquid flows back to the shared first cooling liquid
storage chamber
C221 via the input end C221i.
[00188] As shown in Fig. 20 and Fig. 21, the shared first fan assembly
utilizes the wind
generated by the rotation of the impeller to cool the cooling liquid flowing
back into the shared
first cooling liquid storage chamber (as shown by the arrow of a "wind path"
in the drawing).
[00189] In Fig. 20 and Fig. 21, the cooling liquid first enters the
inversion cooling
passage 451 and then enters the first cooling passage 401, and it should be
understood that in
other embodiments the sequence of the two may be exchangeable. That is, the
cooling liquid
may first enter the first cooling passage 401, and then enters the inversion
cooling passage 451.
[00190] When in practical production, the flowing sequence of the cooling
liquid may
be determined according to the heat generated by heating components. For
example, the
cooling liquid is first introduced into the heating component which generates
less heat. If the
cooling liquid is first introduced into the heating component which generates
more heat, the
outflow cooling liquid is high in temperature, so that the cooling liquid is
impossible to cool
the other heating components which generate less heat, thereby affecting the
heat dissipating
effect. For example, in a case where the heat generated by the electric motor
is more than that
generated by the inversion device, the cooling liquid first enters the
inversion cooling passage
451 and then enters the first cooling passage 401, thereby avoid affecting the
heat dissipating
effect on the subsequent components due to the excessively high temperature of
the cooling
liquid.
[00191] Fig. 22 is a schematically perspective view of the variable-speed
integrated
machine according to another embodiment of the present disclosure. As shown in
Fig. 22, the
variable-speed integrated machine provided by at least one embodiment of the
present
disclosure includes a driving device 1, a driving heat dissipating device 2,
an inversion device
3 and an inversion heat dissipating device 4.
[00192] The variable-speed integrated machine in Fig. 22 differs from that
in Fig. 1 in
42
Date Recue/Date Received 2022-09-08
that the driving heat dissipating device 2 in Fig. 22 adopts both the air-
cooling heat dissipating
way and the liquid-cooling heat dissipating way to perform the heat
dissipation on the driving
device 1. In this case, the driving heat dissipating device 2 includes an air-
cooling heat
dissipating mechanism and a liquid-cooling heat dissipating mechanism.
[00193] For example, the driving device 1 includes an electric motor 10 and
a housing
12 for accommodating the electric motor 10. The inversion device 3 is disposed
at the first side
Si, for example, on the top surface Fl of the housing, and the inversion
device 3 is electrically
connected with the electric motor 10. The specific structures of the electric
motor 10 and the
housing 12 may refer to the description of the foregoing embodiments and are
not repeated
here.
[00194] For example, the inversion heat dissipating device 4 is disposed at
one side of
the inversion device 3 away from the housing 12. The inversion heat
dissipating device 4
includes an inversion cooling plate 541 (also referred to as a water cooling
plate), an inversion
cooling liquid storage assembly 542 and an inversion fan assembly 543. The
inversion fan
assembly 543 includes a heat dissipating fan 545 and a heat dissipating
electric motor 547. The
specific structures and arrangement of the inversion device 3, the inversion
cooling plate 541,
the inversion cooling liquid storage assembly 542, the inversion fan assembly
543, the heat
dissipating fan 545 and the heat dissipating electric motor 547 may refer to
the foregoing
relevant description of the inversion device 3, the inversion cooling plate
41, the inversion
cooling liquid storage assembly 42, the inversion fan assembly 43, the heat
dissipating fan 45
and the heat dissipating electric motor 47, which are not repeated here.
[00195] For example, the air-cooling heat dissipating mechanism includes an
air-output
assembly 520 and an air-input assembly 530. For example, the air-output
assembly 520 is
communicated with the cavity 13 and disposed at the first side Si of the
housing 12. The air-
output assembly 520 includes a heat dissipating fan 521, an exhaust-air duct
522 and a fan
volute 525, wherein the exhaust-air duct 522 includes an air outlet 523 and an
air-outlet cover
plate 524. The air-input assembly 530, for example, is disposed at the second
side S2 of the
housing 12. The specific structures and arrangement of the air-output assembly
520 and the air-
input assembly 530 may refer to the foregoing relevant description of the air-
output assembly
20 and the air-input assembly 30 in Fig. 1, which are not repeated here.
43
Date Recue/Date Received 2022-09-08
[00196] It should be noted that in order to reserve a space for the liquid-
cooling heat
dissipating mechanism, the air-cooling heat dissipating mechanism in Fig. 22
adopts only one
air-output assembly 520, so that the occupied area on the top surface Fl of
the housing 12 can
be reduced. It may be understood that the air-output direction of the air-
output assembly 520 is
not limited to the direction shown in the drawing.
[00197] For example, the liquid-cooling heat dissipating mechanism includes
a first
cooling assembly (not shown), a first cooling liquid storage assembly 502 and
a first fan
assembly 503. The specific structures and arrangement of the first cooling
assembly, the first
cooling liquid storage assembly 502 and the first fan assembly 503 may refer
to the foregoing
relevant description of the first cooling assembly, the first cooling liquid
storage assembly 202
and the first fan assembly 203 in Fig. 9 and are not repeated here.
[00198] It should be noted that compared with the first cooling liquid
storage assembly
202 in Fig. 9, the space occupied by the first cooling liquid storage assembly
502 on the top
surface Fl of the housing 12 in Fig. 22 is relatively small, which is
beneficial for the air-output
assembly 520 to be disposed on the top surface Fl at the same time.
[00199] In at least some embodiments, at least one portion of the air-
cooling heat
dissipating mechanism, at least one portion of the liquid-cooling heat
dissipating mechanism
and the inversion device all are disposed on the same side of the housing. For
example, as
shown in Fig. 22, the air-output assembly 520, the first cooling liquid
storage assembly 502,
the first fan assembly 503 and the inversion device 3 all are disposed on the
same side of the
housing 12 (such as the first side Si of the housing 12 shown in the drawing).
The air-output
assembly 520, the first cooling liquid storage assembly 502, the first fan
assembly 503 and the
inversion device 3 all are disposed on the same side of the housing 12, which
saves the space
occupied by the driving heat dissipating device, the inversion device 3 and
the inversion heat
dissipating device 4 on the variable-speed integrated machine, so that the
overall size of the
variable-speed integrated machine is reduced.
[00200] In the variable-speed integrated machine provided by the above
embodiment,
the air-cooling heat dissipating way and the liquid-cooling heat dissipating
way are used
simultaneously to perform the heat dissipation on the electric motor 10,
thereby improving the
heat dissipating effect on the electric motor. Especially for the high-power
apparatus such as
44
Date Recue/Date Received 2022-09-08
the electric motor, a great amount of heat may be generated during the
operation, so that the
normal work of the variable-speed integrated machine is further ensured by
increasing the heat
dissipating effect.
[00201] For example, the electric motor 10 in Fig. 22 includes an output
shaft, a stator
and a rotor, wherein the output shaft extends outwardly from the housing 12.
The specific
structures of the output shaft, the stator and the rotor and the arrangement
thereof in the driving
device may refer to the description of the foregoing embodiments and are not
repeated here.
[00202] For example, when the air-cooling heat dissipating way and the
liquid-cooling
heat dissipating way are used simultaneously to perform the heat dissipation
on the electric
motor 10, the air-cooling heat dissipating way may be used for the rotor, and
the liquid-cooling
heat dissipating way may be used for the stator.
[00203] For example, in Fig. 22, when the heat dissipating fan 521 is
started, the external
air is sucked into the cavity 13 by the air-input assembly 30 on the bottom
surface F2 of the
housing 12, and the air sucked into the cavity 13 pass through the inner
cavity 150 (as shown
in Fig. 11) of the stator 15, thereby realizing the heat dissipating effect on
the electric motor
10. Thereafter, through the pumping effect of the heat dissipating fan 521,
the air is discharged
from the exhaust-air duct 522.
[00204] For example, the first cooling assembly in Fig. 22 includes a first
cooling
passage 201 in Fig. 10 and Fig. 11, and at least one portion of the first
cooling passage 201 is
disposed in the stator in a direction parallel to the output shaft. In this
way, when the cooling
liquid is introduced into the first cooling passage, the cooling liquid flows
through a stator body
to realize the heat dissipating effect on the stator.
[00205] In at least some embodiments, in the case that the air-cooling heat
dissipating
way and the liquid-cooling heat dissipating way are used simultaneously to
perform the heat
dissipation on the electric motor 10, the inversion heat dissipating device 4
and the driving heat
dissipating device 3 may share the first cooling liquid storage assembly 502
and the first fan
assembly 503. The specific structures and arrangement of the first cooling
liquid storage
assembly 502, the first fan assembly 503, the inversion device 3 and the
inversion heat
dissipating device 4 in the shared state may refer to the foregoing relevant
description in Fig.
12 and Fig. 13 and are not repeated here.
Date Recue/Date Received 2022-09-08
[00206] Further, in a case where the first cooling liquid storage assembly
502 and the
first fan assembly 503 are shared, the first cooling passage disposed in the
electric motor 10
and the inversion cooling passage disposed in the inversion cooling plate may
be connected in
parallel or in series. The connection way may be determined by the ordinary
skilled in the prior
art according to the practical need. The two connection ways are described
below in
conjunction with specific examples.
[00207] Fig. 23 to Fig. 24 schematically illustrate connection block
diagrams of
examples in which the first cooling passage and the inversion cooling passage
are connected
in parallel when the air-cooling heat dissipating way and the liquid-cooling
heat dissipating
way are used simultaneously to perform the heat dissipation on the electric
motor.
[00208] As shown in Fig. 23 and Fig. 24, in a case where the first cooling
liquid storage
assembly and the first fan assembly are shared, a first cooling passage 501 is
provided in the
electric motor 10 of Fig. 22, and an inversion cooling passage 551 is provided
in the inversion
cooling plate 541 of Fig. 22. The specific structures and arrangement of the
first cooling
passage 501 and the inversion cooling passage 541 may refer to the foregoing
description of
the first cooling passage 401 and the inversion cooling passage 441 and are
not repeated here.
[00209] For example, the shared first cooling liquid storage assembly
includes a shared
first cooling liquid storage chamber represented by C521, and the specific
structures of the
shared first cooling liquid storage chamber C521 and the shared first fan
assembly may refer
to the foregoing relevant description of the shared first cooling liquid
storage chamber C221
and the shared first fan assembly C203 and are not repeated here.
[00210] As shown in Fig. 23 and Fig. 24, the first cooling passage 501
includes a first
cooling passage inlet 501i and a first cooling passage outlet 501o. The first
cooling passage
inlet 501i is communicated with the output end C5210 of the shared first
cooling liquid storage
chamber C521. The first cooling passage outlet 5010 is communicated with the
input end C52 ii.
The cooling liquid flows out from the output end C5210 of the shared first
cooling liquid
storage chamber C521 and enters the first cooling passage 501. When the
cooling liquid passes
through the stator 15 of the electric motor 10, the stator 15 of the electric
motor 10 is cooled
down. Finally, the cooling liquid flows back to the shared first cooling
liquid storage chamber
C521 via the input end C521i.
46
Date Recue/Date Received 2022-09-08
[00211] As shown in Fig. 23 and Fig. 24, the inversion cooling passage 551
includes an
inversion cooling passage inlet 551i and an inversion cooling passage outlet
551o. The
inversion cooling passage inlet 551i is communicated with the output end C5210
of the shared
first cooling liquid storage chamber C521. The inversion cooling passage
outlet 5510 is
communicated with the input end C521i. The cooling liquid flows out from the
output end
C5210 of the shared first cooling liquid storage chamber C521 and enters the
inversion cooling
passage 551. When the cooling liquid passes through the inversion cooling
plate 541, the
inversion device 3 is cooled down. Finally, the cooling liquid flows back to
the shared first
cooling liquid storage chamber C521 via the input end C521i.
[00212] As shown in Fig. 23 and Fig. 24, the shared first fan assembly
utilizes the wind
generated by the rotation of the impeller to cool the cooling liquid flowing
back into the shared
first cooling liquid storage chamber C521 (as shown by the arrow of the "wind
path"
throughout C521 in the drawing). At the same time, due to the pumping effect
of the heat
dissipating fan 521 in the air-output assembly 520, the external air is sucked
into the electric
motor 10 and pass through the rotor 16 to flow out from the exhaust-air duct
522, thereby
realizing the cooling effect on the rotor 16 of the electric motor 10 (as
shown by the arrow of
the "wind path" throughout the rotor 16).
[00213] In at least some embodiments, in order to increase the flow
capacity of the
cooling liquid in the inversion cooling passage and the first cooling passage
and to enhance the
circulating reflux effect, one or more pumps may be provided on the first
cooling passage 501
and the inversion cooling passage 551.
[00214] For example, as shown in Fig. 23, the first cooling passage 501 and
the inversion
cooling passage 551 are provided respectively with a first pump G1 and a
second pump G2.
The first pump G1 is located on a portion of the first cooling passage 501
between the output
end C5210 and the electric motor 10 and at the upstream of the electric motor
10, so that the
flow capacity of the cooling liquid in the first cooling passage is increased.
The second pump
G2 is located on a portion of the inversion cooling passage 551 between the
output end C5210
and the inversion cooling plate 541 and at the upstream of the inversion
cooling plate 541, so
that the flow capacity of the cooling liquid in the inversion cooling passage
551 is increased.
[00215] For example, the first pump G1 may also be disposed on a dotted box
position
47
Date Recue/Date Received 2022-09-08
marked with G1 in Fig. 23, and the second pump G2 may also be disposed on a
dotted box
position marked with G2 in Fig. 23. The specific positions may refer to
relevant description in
Fig. 15 to Fig. 17, and are not repeated here.
[00216] For example, as shown in Fig. 24, the first cooling passage 501 and
the inversion
cooling passage 551 are provided with only one first pump Gl. The first pump
G1 is located
on a portion of the first cooling passage 501 between the input end C521i and
the electric motor
and at the downstream of the electric motor 10, so that the flow capacity of
the cooling
liquid in the first cooling passage is increased. At the same time, the first
pump G1 is also
located on a portion of the inversion cooling passage 551 between the input
end C521i and the
inversion cooling plate 541 and at the downstream of the inversion cooling
plate 541, so that
the flow capacity of the cooling liquid in the inversion cooling passage 551
is increased.
Compared with the case where two pumps are used, by adopting one pump, the
total number
of the pumps used can be reduced, and the manufacturing cost can be reduced.
[00217] For example, the first pump G1 may also be disposed on a dotted box
position
marked with G1 in Fig. 24. The specific position may refer to relevant
description in Fig. 19,
and is not repeated here.
[00218] Fig. 25 schematically illustrates a connection block diagram of an
example in
which the first cooling passage and the inversion cooling passage are
connected in series when
the air-cooling heat dissipating way and the liquid-cooling heat dissipating
way are used
simultaneously to perform the heat dissipation on the electric motor.
[00219] As shown in Fig. 25, the first cooling passage 501 includes a first
cooling
passage inlet 501i and a first cooling passage outlet 501o. The inversion
cooling passage 551
includes an inversion cooling passage inlet 551i and an inversion cooling
passage outlet 551o.
The inversion cooling passage inlet 551i is communicated with the output end
C5210 of the
shared first cooling liquid storage chamber C521, the inversion cooling
passage outlet 5510 is
communicated with the first cooling passage inlet 501i, and the first cooling
passage outlet
5010 is communicated with the input end C521i.
[00220] When the cooling liquid flows out from the output end C5210 of the
shared first
cooling liquid storage chamber C521, the cooling liquid first enters the
inversion cooling plate
541 via the inversion cooling passage 551 to cool down the inversion device 3;
and then the
48
Date Recue/Date Received 2022-09-08
cooling liquid enters the stator 15 of the electric motor 10 via the first
cooling passage 501 to
cool down the stator 15 of the electric motor 10. Finally, the cooling liquid
flows back to the
shared first cooling liquid storage chamber C521 via the input end C521i.
[00221] In an example of Fig. 25, the cooling liquid first enters the
inversion cooling
passage 551 and then enters the first cooling passage 501, and it should be
understood that in
other embodiments the sequence of the two may be exchangeable. That is, the
cooling liquid
may first enter the first cooling passage 501, and then enter the inversion
cooling passage 551.
When in practical production, the specific flowing sequence of the cooling
liquid in the two
may be determined according to the heat generated by heating components, and
more details
may refer to the foregoing description.
[00222] For example, the first pump G1 may also be disposed on a dotted box
position
marked with G1 in Fig. 25. The specific position may refer to relevant
description in Fig. 20,
and is not repeated here.
[00223] At least one embodiment of the present disclosure further provides
wellsite
apparatus, which includes a variable-speed integrated machine according to any
one of the
foregoing embodiments. The wellsite apparatus includes at least one selected
from the group
of the electric-driven fracturing apparatus and the electric-driven cementing
apparatus.
[00224] Fig. 26 is a structurally schematic diagram of electric-driven
fracturing
apparatus according to an embodiment of the present disclosure. As shown in
Fig. 26, for
example, the electric-driven fracturing apparatus provided by at least one
embodiment of the
present disclosure is an electric-driven fracturing semitrailer. The electric-
driven fracturing
semitrailer includes a semitrailer body 91, a heat radiator 92, a variable-
speed integrated
machine 93, a piston pump 94, a junction box 95, a local control cabinet 96, a
transmission
gear 97, a high-voltage system 98 and a low-voltage system 99. The variable-
speed integrated
machine 93 is connected with the piston pump 94 through the transmission gear
97, and the
heat radiator 92 cools down the lubricating oil of the piston pump 94.
[00225] In the electric-driven fracturing apparatus provided by the above
embodiment,
the variable-speed integrated machine 93 described in any one of the foregoing
embodiments
is applied to the electric-driven fracturing semitrailer, so that not only can
the heat dissipating
function for the electric motor and the inversion device be realized, but also
the structure of the
49
Date Recue/Date Received 2022-09-08
variable-speed integrated machine 93 is more compact, the space occupied by
the variable-
speed integrated machine 93 on the semitrailer is reduced, the weight of the
vehicle is reduced,
the manufacturing cost of the vehicle is reduced, and more flexibility in
practical use and
convenience in transportation can be realized.
[00226] In the electric-driven fracturing apparatus provided by the above
embodiment,
the electric motor and an inverter are integrated together, so that the
electric-driven fracturing
semitrailer may attain the working state with only one group of power cable
and auxiliary cable
connected to a power supply device, and the wire connection is simpler and
more convenient.
For example, the power provided by the power supply apparatus may be supplied
with the
high-voltage power rectified by the rectifier transformer and may also be
supplied with the
power directly rectified by a power generator.
[00227] For example, the transmission gear 97 may adopt at least one or two
of a
transmission shaft, a coupler or a clutch. For example, the transmission gear
97 is connected
directly with the piston pump 94 and is also connected with the piston pump
through a gearbox
so as to realize the input of a larger torque. While the input torque of the
piston pump increases,
the higher discharge pressure is discharged. The gearbox includes but is not
limited to a
reduction gearbox, a transmission case and a transfer case.
[00228] According to different operating environments, the gearbox may be
integrated
with other apparatus and may also be disposed independently. For example, in
the case that the
gearbox is applied to the electric-driven fracturing apparatus, the gearbox is
integrated into the
piston pump. In the case that the gearbox is applied to the electric-driven
cementing apparatus,
the transmission gear and the piston pump may be provided with a multi-level
gearbox, such
as a two-level gearbox, so that the torque is increased by multi-level
transmission and speed
reduction.
[00229] For example, an axis of the coupler may overlap or not overlap an
axis of the
piston pump. In the case that the axes of the two are not overlapped, the
coupler adopts a
flexible or an elastic coupler.
[00230] For example, the piston pump 94 is a five-cylinder piston pump with
power
more than 5000hp. Guarantee is provided for high-power output of a single
vehicle, and the
power density per unit area is also increased, thereby providing a
prerequisite for reducing the
Date Recue/Date Received 2022-09-08
occupied area of the whole wellsite.
[00231] For example, the power of the variable-speed integrated machine 93
is more
than 3000KW. The power of the variable-speed integrated machine 93 is matched
with the
power of the piston pump 94, so that the variable-speed integrated machine 93
can drive the
piston pump 94 normally.
[00232] For example, the junction box 95 is connected with the variable-
speed
integrated machine 93, and the junction box 95 may be disposed on a side
surface or a tail
portion of the vehicle. The junction box 95 may be a cable connector connected
by bolts, and
may also be a quick connector. In the embodiment of the present disclosure,
the electric-driven
fracturing semitrailer may attain the working state only with one group of
power cable and
auxiliary cable connected to a power supply device, and the wire connection is
simpler and
more convenient.
[00233] In the variable-speed integrated machine and wellsite apparatus
thereof
provided by the embodiment of the present disclosure, the inversion heat
dissipating device is
used to perform the heat dissipation on the inversion device, and the driving
heat dissipating
device is used to perform the heat dissipation on the driving device, so that
the consecutive
work of the driving device and the inversion device at the normal temperature
in the wellsite
is guaranteed effectively. At least one portion of the driving heat
dissipating device and the
inversion device are disposed on the same side of the housing, which saves the
space occupied
by the driving heat dissipating device and the inversion device on the
variable-speed integrated
machine, so that the overall size of the variable-speed integrated machine is
reduced. When the
variable-speed integrated machine with a small size is applied to the wellsite
apparatus, due to
the small overall size of the variable-speed integrated machine, the occupied
space on the
wellsite apparatus is reduced, thereby providing more space for installing
other apparatuses on
the wellsite apparatus. When at least one portion of the driving heat
dissipating device and the
inversion device are disposed on the top surface of the housing, since the top
space of the
wellsite apparatus is occupied, the side space is not affected, so that even
if the transverse
distance between two wellsite apparatus is small, the heat dissipating effect
of the two wellsite
apparatus is not affected.
[00234] The following points need to be noted herein:
51
Date Recue/Date Received 2022-09-08
[00235] (1) The accompanying drawings of the embodiments of the present
disclosure
only relate to the structure involved in the embodiments of the present
disclosure, and other
structures may refer to the conventional design.
[00236] (2) In case of no conflict, the embodiments of the present
disclosure and features
in the embodiments may be combined to obtain new embodiments.
[00237] The above are only specific implementations of the present
disclosure, but the
protection scope of the present disclosure is not limited thereto. Any simple
variations or
replacements made by the ordinary skilled familiar with the prior art within
the technical scope
disclosed by the present disclosure shall be covered by the protection scope
of the present
disclosure. Therefore, the protection scope of the present disclosure should
be subjected to the
protection scope defined by the claims.
52
Date Recue/Date Received 2022-09-08
