Note: Descriptions are shown in the official language in which they were submitted.
TURBINE FRACTURING SYSTEM, CONTROLLING METHOD THEREOF,
CONTROLLING APPARATUS AND STORAGE MEDIUM
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to Chinese patent
application No.
202110612965.6, filed on June 2, 2021 under the title of "TURBINE FRACTURING
SYSTEM, CONTROLLING METHOD THEREOF, CONTROLLING APPARATUS AND
STORAGE MEDIUM" and Chinese patent application No. 202121227483.0, filed on
June 2,
2021 under the title of "TURBINE FRACTURING SYSTEM".
TECHNICAL FIELD
[0002] Embodiments of the present disclosure relate to a turbine fracturing
system and
a controlling method thereof, a controlling apparatus and a computer-readable
storage medium.
BACKGROUND
[0003] In a hydraulic fracturing system using a turbine engine to drive a
plunger pump,
the plunger pump is driven by the turbine engine. The turbine engine may use
diesel oil or
natural gas as a fuel. The use of natural gas has considerable cost advantage,
so fuel gas is
mostly used in actual production.
SUMMARY
[0004] According to first aspect of the present disclosure, it is provided
a turbine
fracturing system, comprising: N turbine fracturing apparatuses, wherein each
of the N turbine
fracturing apparatuses comprises a turbine engine, and N is an integer greater
than or equal to
2; a fuel gas supply apparatus connected to N turbine engines, wherein the
fuel gas supply
apparatus is configured to supply fuel gas and distribute the fuel gas to the
N turbine engines
as gaseous fuel; and a fuel liquid supply apparatus connected to at least one
of the N turbine
Date recue/Date received 2023-04-05
engines and configured to supply liquid fuel to at least one of the N turbine
engines in a case
that at least one of a flow rate and a pressure of the fuel gas decreases.
100051 In at least one embodiment, the turbine fracturing system further
comprises a
measurement and control apparatus, the measurement and control apparatus
comprising a data
acquisition device and a data processing device. The data acquisition device
is in signal
connection with the fuel gas supply apparatus, and configured to acquire first
fuel gas data of
the fuel gas and send the first fuel gas data to the data processing device.
The data processing
device comprises a comparison and determination circuit and a control circuit.
The comparison
and determination circuit is in signal connection with the data acquisition
device, the
comparison and determination circuit is configured to compare the first fuel
gas data with a
first threshold value and determine whether the first fuel gas data is smaller
than the first
threshold value; the first fuel gas data comprises the at least one of the
pressure and the flow
rate of the fuel gas, and the first threshold value comprises at least one of
a first pressure
threshold value corresponding to the pressure and a first flow rate threshold
value
corresponding to the flow rate. The control circuit is in signal connection
with the comparison
and determination circuit, the control circuit is configured to select the at
least one of the N
turbine engines and generate a first fuel switching signal in response to the
first fuel gas data
being smaller than the first threshold value. The first fuel switching signal
is used for switching
the gaseous fuel of the at least one of the N turbine engines into liquid
fuel.
100061 In at least one embodiment, the turbine fracturing system further
comprises a
fuel liquid storage device which is arranged on the turbine fracturing
apparatus and connected
with the turbine engine, and the fuel liquid supply apparatus supplies the
liquid fuel to the at
least one of the N turbine engines through the fuel liquid storage device.
Each of the N turbine
fracturing apparatuses further comprises a local control device in signal
connection with the
turbine engine. The control circuit is further configured to send the first
fuel switching signal
to the local control device which is in signal connection with the at least
one of the N turbine
engines as selected. The local control device is configured to switch the
gaseous fuel of the at
least one of the N turbine engines as selected to the liquid fuel according to
the first fuel
switching signal; the liquid fuel is supplied by the fuel liquid storage
device connected to the
at least one of the N turbine engines as selected.
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100071 In at least one embodiment, the turbine fracturing system further
comprises a
fuel gas delivery device connected with the turbine engine, and the fuel gas
supply apparatus
supplies the gaseous fuel to the turbine engine through the fuel gas delivery
device. The local
control device comprises a local control circuit and a switching circuit; the
local control circuit
is configured to receive the first fuel switching signal and control the
switching circuit to realize
switching from the gaseous fuel to the liquid fuel. The switching circuit is
respectively
connected to the fuel liquid storage device and the fuel gas delivery device
which are arranged
on a same turbine fracturing apparatus, and is configured to switch from the
fuel gas delivery
device to the fuel liquid storage device under a control of the local control
circuit.
[0008] In at least one embodiment, the at least one of the N turbine
engines as selected
comprises a turbine engine with a longest operational time; the turbine engine
with the longest
operational time satisfies at least one of the following three conditions: a
current liquid amount
of the liquid fuel stored in the turbine engine is the largest; a load of the
turbine engine is the
smallest; and a ratio of the current liquid amount of the liquid fuel stored
in the turbine engine
to the load of the turbine engine is the highest.
100091 In at least one embodiment, the data acquisition device is further
configured to
acquire second fuel gas data of the fuel gas and send the second fuel gas data
to the data
processing device, and the second fuel gas data comprises a change rate of the
first fuel gas
data. The comparison and determination circuit is further configured to
compare the second
fuel gas data with a change rate threshold value and send a comparison result
to the control
circuit. The control circuit is further configured to adjust a total
displacement of the turbine
fracturing system according to the comparison result.
00101 In at least one embodiment, the change rate of the first fuel gas
data comprises
a reduction rate of the first fuel gas data, and the change rate threshold
value comprises a
reduction rate threshold value of the first fuel gas data. The comparison and
determination
circuit is further configured to compare the second fuel gas data with the
reduction rate
threshold value of the first fuel gas data and determine whether the second
fuel gas data is
greater than or equal to the reduction rate threshold value of the first fuel
gas data. The control
circuit is further configured to generate a first displacement reduction
signal for reducing the
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total displacement of the turbine fracturing system in response to the second
fuel gas data being
greater than or equal to the reduction rate threshold value of the first fuel
gas data
100111 In at least one embodiment, the fuel liquid supply apparatus
comprises N fuel
liquid storage devices which are arranged on the N turbine fracturing
apparatuses in one-to-
one correspondence and connected with the N turbine engines in one-to-one
correspondence.
The data acquisition device is further configured to acquire a current total
liquid amount of the
liquid fuels stored in all the N fuel liquid storage devices and send the
current total liquid
amount to the data processing device. The comparison and determination circuit
is further
configured to compare the current total liquid amount with a total liquid
amount threshold value
and determine whether the current total liquid amount is smaller than the
total liquid amount
threshold value. The control circuit is further configured to generate a
second displacement
reduction signal for reducing the total displacement of the turbine fracturing
system in response
to the current total liquid amount being smaller than the total liquid amount
threshold value.
[0012] In at least one embodiment, the comparison and determination circuit
is further
configured for: determining whether a turbine engine having switched to the
liquid fuel is
existed, in response to the first fuel gas data being greater than or equal to
the first threshold
value; and comparing the first fuel gas data and a second threshold value and
determining
whether the first fuel gas data is greater than or equal to the second
threshold value, in response
to the turbine engine having switched to the liquid fuel being existed,
wherein the second
threshold value is greater than the first threshold value. The control circuit
is further configured
to generate a second fuel switching signal for switching the liquid fuel of
the turbine engine
having switched to the liquid fuel back to the gaseous fuel in response to the
first fuel gas data
being greater than or equal to the second threshold value.
[0013] In at least one embodiment, the control circuit is further
configured to acquire a
total number M of the turbine engines having switched to the liquid fuel,
wherein M is a
positive integer smaller than N; the control circuit is further configured to
select a turbine
engine with the shortest operational time among M turbine engines and generate
the second
fuel switching signal for switching the liquid fuel of the turbine engine with
the shortest
operational time back to the gaseous fuel. The turbine engine with the
shortest operational time
satisfies at least one of the following three conditions: a current liquid
amount of the liquid fuel
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stored in the turbine engine is the smallest; a load of the turbine engine is
the largest; and a
ratio of the current liquid amount of the liquid fuel stored in the turbine
engine to the load of
the turbine engine is the lowest.
[0014] According to second aspect of the present disclosure, it is provided
a controlling
method of a turbine fracturing system, comprising: acquiring first fuel gas
data of fuel gas,
wherein the fuel gas is distributed to N turbine engines and used as gaseous
fuel of the N turbine
engines, and N is an integer greater than or equal to 2; determining whether
at least one of a
flow rate and a pressure of the fuel gas decreases according to the first fuel
gas data; and
supplying liquid fuel to the at least one of N turbine engines in response to
a decrease in the at
least one of the flow rate and the pressure of the fuel gas.
[0015] In at least one embodiment, the determining whether the at least one
of the flow
rate and the pressure of the fuel gas decreases according to the first fuel
gas data comprises:
comparing the first fuel gas data with a first threshold value, and
determining whether the first
fuel gas data is smaller than the first threshold value; the first fuel gas
data comprises the at
least one of the pressure and the flow rate of the fuel gas, and the first
threshold value comprises
at least one of a first pressure threshold value corresponding to the pressure
and a first flow
rate threshold value corresponding to the flow rate. The supplying the liquid
fuel to the at least
one of the N turbine engines in response to the decrease in the at least one
of the flow rate and
the pressure of the fuel gas comprises: selecting the at least one of the N
turbine engines and
switching the gaseous fuel of the at least one of the N turbine engines to the
liquid fuel in
response to the first fuel gas data being smaller than the first threshold
value.
[0016] In at least one embodiment, the selecting the at least one of the N
turbine engines
and the switching the gaseous fuel of the at least one of the N turbine
engines to the liquid fuel
in response to the first fuel gas data being smaller than the first threshold
value comprises:
selecting a turbine engine with the longest operational time among the N
turbine engines, and
switching the gaseous fuel of the turbine engine with the longest operational
time to the liquid
fuel. The turbine engine with the longest operational time satisfies at least
one of the following
three conditions: a current liquid amount of the liquid fuel stored in the
turbine engine is the
largest; a load of the turbine engine is the smallest; and a ratio of the
current liquid amount of
the liquid fuel stored in the turbine engine to the load of the turbine engine
is the highest.
Date Recue/Date Received 2021-08-04
[0017] In at least one embodiment, the controlling method of the turbine
fracturing
system further comprises: determining whether the gaseous fuels of all the N
turbine engines
are switched to liquid fuels.
[0018] In at least one embodiment, the controlling method of the turbine
fracturing
system further comprises: acquiring second fuel gas data of the fuel gas in
response to the
gaseous fuels of all the N turbine engines being switched to liquid fuels,
wherein the second
fuel gas data comprises a change rate of the first fuel gas data; comparing
the second fuel gas
data with a change rate threshold value; and adjusting a total displacement of
the turbine
fracturing system according to a comparison result.
[0019] In at least one embodiment, the change rate of the first fuel gas
data comprises
a reduction rate of the first fuel gas data, and the change rate threshold
value comprises a
reduction rate threshold value of the first fuel gas data. The comparing the
second fuel gas data
with the change rate threshold value comprises: comparing the second fuel gas
data with the
reduction rate threshold value of the first fuel gas data, and determining
whether the second
fuel gas data is greater than or equal to the reduction rate threshold value
of the first fuel gas
data. The adjusting the total displacement of the turbine fracturing system
according to the
comparison result comprises: reducing the total displacement of the turbine
fracturing system
in response to the second fuel gas data being greater than or equal to the
reduction rate threshold
value of the first fuel gas data.
[0020] In at least one embodiment, the controlling method of the turbine
fracturing
system further comprises: acquiring a current total liquid amount of liquid
fuels stored in all
the N turbine engines in response to the gaseous fuels of all the N turbine
engines being
switched to the liquid fuels; comparing the current total liquid amount with a
total liquid
amount threshold value; and adjusting the total displacement of the turbine
fracturing system
according to a comparison result.
[0021] In at least one embodiment, the comparing the current total liquid
amount with
the total liquid amount threshold value comprises: comparing the current total
liquid amount
with the total liquid amount threshold value, and determine whether the
current total liquid
amount is smaller than the total liquid amount threshold value. The adjusting
the total
displacement of the turbine fracturing system according to the comparison
result comprises:
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reducing the total displacement of the turbine fracturing system in response
to the current total
liquid amount being smaller than the total liquid amount threshold value.
[0022] In at least one embodiment, the comparing the current total liquid
amount with
the total liquid amount threshold value comprises: comparing the current total
liquid amount
with the total liquid amount threshold value, and determining whether the
current total liquid
amount is smaller than the total liquid amount threshold value; and the
adjusting the total
displacement of the turbine fracturing system according to the comparison
result comprises:
adjusting the total displacement of the turbine fracturing system according to
the comparison
result.
[0023] In at least one embodiment, the controlling method of the turbine
fracturing
system further comprises: determining whether a turbine engine having switched
to the liquid
fuel is existed, in response to the first fuel gas data being greater than or
equal to the first
threshold value; comparing the first fuel gas data and a second threshold
value and determining
whether the first fuel gas data is greater than or equal to the second
threshold value, in response
to the turbine engine having switched to the liquid fuel being existed,
wherein the second
threshold value is greater than the first threshold value; and switching the
liquid fuel of the
turbine engine having switched to the liquid fuel back to the gaseous fuel in
response to the
first fuel gas data being greater than or equal to the second threshold value.
[0024] According to third aspect of the present disclosure, it is provided
a controlling
apparatus, comprising: a processor; and a memory, wherein a computer-
executable code is
stored in the memory, and the computer-executable code is configured to
execute the above-
mentioned controlling method of the turbine fracturing system when executed by
the processor.
[0025] According to fourth aspect of the present disclosure, it is provided
a computer-
readable storage medium stored with a computer-executable code, wherein the
computer-
executable code causes a processor to execute the above-mentioned controlling
method of the
turbine fracturing system when executed by the processor.
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BRIEF DESCRIPTION OF THE DRAWINGS
[0026] 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.
[0027] Fig. lA is a schematic diagram of a turbine fracturing system
provided
according to an embodiment of the present disclosure;
[0028] Fig. 1B is a schematic diagram of a turbine fracturing system
provided
according to another embodiment of the present disclosure;
[0029] Fig. 2 is a schematic diagram of a turbine fracturing apparatus
provided
according to an embodiment of the present disclosure;
[0030] Fig. 3 is a schematic diagram of a measurement and control apparatus
provided
according to an embodiment of the present disclosure;
[0031] Fig. 4 is a flowchart of a controlling method of a turbine
fracturing system
provided according to an embodiment of the present disclosure;
[0032] Fig. 5 is a flowchart of a controlling method of a turbine
fracturing system
provided according to another embodiment of the present disclosure;
[0033] Fig. 6 is a flowchart of a controlling method of a turbine
fracturing system
provided according to yet another embodiment of the present disclosure;
[0034] Fig. 7 is a flowchart of a controlling method of a turbine
fracturing system
provided according to still another embodiment of the present disclosure;
[0035] Fig. 8 is a schematic diagram of a controlling apparatus provided
according to
an embodiment of the present disclosure; and
[0036] Fig. 9 is a schematic diagram of a storage medium provided according
to an
embodiment of the present disclosure.
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DETAILED DESCRIPTION
[0037] 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.
[0038] 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 in
the case that the
position of the object which is described is changed, the relative position
relationship may be
changed accordingly.
[0039] At present, in gas turbine engines, in addition to compressed
natural gas (CNG),
liquefied natural gas (LNG) can also be used. There are many ways to supply
the natural gas,
for example, it can be delivered to a turbine engine by a CNG tanker via a CNG
pressure
regulating apparatus, or by an LNG tanker via an LNG gasification conveying
apparatus, etc.
In the case that switching the tankers, it may, sometimes, involve the problem
of insufficient
natural gas at the supply side. In such case, operators are required to
manually switch the fuel
depending on field conditions of well sites. If a manual switching operation
fails or is not done
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timely, it may not only result in the turbine fracturing apparatus unable to
continue working
(e.g., shutting down), but also cannot guarantee the operation safety of
operators.
100401 At least one embodiment of the present disclosure provides a turbine
fracturing
system, the turbine fracturing system includes: N turbine fracturing
apparatuses, each of the N
turbine fracturing apparatuses includes a turbine engine, and N is an integer
greater than or
equal to 2; a fuel gas supply apparatus connected to N turbine engines, the
fuel gas supply
apparatus is configured to supply fuel gas and distribute the fuel gas to the
N turbine engines
as gaseous fuel; and a fuel liquid supply apparatus connected to at least one
of the N turbine
engines and configured to supply liquid fuel to the at least one of the N
turbine engines in a
case that at least one of a flow rate and a pressure of the fuel gas
decreases.
100411 In the turbine fracturing system provided by at least one embodiment
of the
present disclosure, in the case that at least one of the flow rate and
pressure of the fuel gas
decreases, the fuel liquid supply apparatus supplies liquid fuel to at least
one of the N turbine
fracturing apparatuses. That is, in the case that the fuel gas supplied by the
fuel gas supply
apparatus is insufficient, the fuel liquid supply apparatus can be controlled
to automatically
supply liquid fuel to the turbine engine, so that the normal operation of the
N turbine fracturing
apparatuses can be ensured and the turbine fracturing system can maintain a
normal
displacement output. Moreover, because the switching from gaseous fuel to
liquid fuel is
automatically completed, the operation safety of operators is improved and the
labor intensity
of manual operation is reduced.
[0042] In the embodiment of the present disclosure, the "flow rate" refers
to the amount
of fluid (liquid or gas) flowing through the effective cross-section of a
closed pipeline or open
channel per unit time, also known as instantaneous flow rate. When the amount
of fluid is
expressed by volume, it is called volume flow rate; when the amount of fluid
is expressed by
mass, it is called mass flow rate. For example, the "gas flow rate" refers to
the volume of gas
flowing through the flow section per unit time under a certain pressure and a
certain
temperature.
10043] In the embodiment of the present disclosure, the fuel supplied to
the turbine
engine includes combustible gaseous fuel (fuel gas for short) or combustible
liquid fuel (fuel
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Date Recue/Date Received 2021-08-04
liquid for short). For example, the fuel gas includes compressed natural gas
(CNG). For
example, the fuel liquid includes diesel oil, bio-fuel oil or liquefied
natural gas (LNG), etc.
100441 In the embodiment of the present disclosure, by acquiring relevant
status data
of the fuel gas output from the fuel gas supply apparatus, such as the
pressure and/or flow rate
of the fuel gas, the supply status of the fuel gas can be determined, and then
the automatic
switching from gaseous fuel to liquid fuel can be realized according to the
supply status.
100451 Hereinafter, the present disclosure will be explained by several
specific
embodiments. In order to keep the following description of the embodiments of
the present
disclosure clear and concise, detailed descriptions of known functions and
known components
may be omitted. In the case that any component of an embodiment of the present
disclosure
appears in more than one figure, the component may be denoted by the same
reference numeral
in each of the figures.
100461 Fig. 1A is a schematic diagram of a turbine fracturing system
provided
according to an embodiment of the present disclosure. As shown in Fig. 1A, the
turbine
fracturing system 1 includes N turbine fracturing apparatuses A, a fuel gas
supply apparatus 10,
and a fuel liquid supply apparatus 20, wherein N is an integer greater than or
equal to 2. For
example, the N turbine fracturing apparatuses are turbine fracturing
apparatuses Al, A2.... An.
Each of the turbine fracturing apparatuses A includes a turbine engine 100. In
the embodiment
of the present disclosure, the turbine fracturing apparatus is a vehicle-
mounted or a semi-trailer-
mounted or a skid-mounted apparatus. For example, the turbine fracturing
apparatus includes
a turbine fracturing trailer. For example, the turbine fracturing apparatus
includes a turbine
fracturing trailer group composed of a plurality of turbine fracturing
trailers.
[0047] For example, the turbine fracturing apparatus A further includes a
plunger pump
101, and the turbine engine 100 is connected with the plunger pump 101 so that
kinetic energy
generated by the turbine engine 100 is transmitted to the plunger pump 101. In
an example, the
turbine fracturing apparatus A may further include a reduction gearbox and a
transmission
mechanism (not shown) disposed between the turbine engine 100 and the plunger
pump 101.
An output end of the turbine engine 100 is connected with the reduction
gearbox; and the
reduction gearbox and the plunger pump 101 are in transmission connection
there-between
through the transmission mechanism. Compared with the traditional fracturing
device by using
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diesel engine as power source, the plunger pump is driven by the turbine
engine which has
large power-volume ratio and small occupied area, thus greatly reducing the
number of
fracturing apparatuses and the occupied area of the entire fracturing system.
[0048] As shown in Fig. 1A, a fuel gas supply apparatus 10 is connected to
the N
turbine engines and is configured to supply fuel gas and distribute the fuel
gas to the N turbine
engines as gaseous fuel.
[0049] Fig. 2 is a schematic diagram of a turbine fracturing apparatus
provided
according to an embodiment of the present disclosure.
[0050] As shown in Figs. lA and 2, for example, the turbine fracturing
system 1 further
includes a fuel gas delivery device 103. The fuel gas delivery device 103 is
connected to the
turbine engine 100. The fuel gas supply apparatus 10 supplies the gaseous fuel
to the turbine
fracturing apparatus A through the fuel gas delivery device 103. That is, one
end of the fuel gas
delivery device 103 is connected with the fuel gas supply apparatus 10, and
the other end is
connected with the turbine fracturing apparatus 100. In this way, in the case
that the fuel gas in
the fuel gas supply apparatus 10 is reduced, the gaseous fuel delivered to the
turbine engine
100 can be controlled by controlling the fuel gas delivery device 103 on the
turbine fracturing
apparatus A (for example, switching from gaseous fuel to liquid fuel).
[0051] For example, the fuel gas delivery device includes a delivery
pipeline. The
delivery pipeline includes, for example, a main pipeline and a plurality of
branch pipelines
connected with the main pipeline; one end of the main pipeline is communicated
with the fuel
gas supply apparatus 10, and the other end is communicated with the plurality
of branch
pipelines; and each of the branch pipelines is communicated with one of the
turbine engines.
In this way, the fuel gas supply apparatus 10 can distribute the fuel gas to
the N turbine engines.
[0052] In an embodiment of the present disclosure, the fuel gas supply
apparatus 10 is,
for example, a CNG tanker, and the number of CNG tankers may be one or more.
For example,
the fuel gas supply apparatus 10 delivers the fuel gas to N turbine engines
through N fuel gas
delivery devices 103 in one-to-one correspondence, which can prevent the gas
from leaking
during the delivery process of gas so as to improve the safety.
[0053] Optionally, a CNG pressure regulating device is further arranged
between the
CNG tanker and the fuel gas delivery device 103, and natural gas is delivered
from the CNG
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tanker to the turbine engine 100 after the pressure of the natura gas is
regulated by the CNG
pressure regulating device. In this way, the pressure of the fuel gas can be
conveniently adjusted
according to demands of actual production.
[0054] For example, the number of fuel gas delivery devices 103 is N, and
the N fuel
gas delivery devices 103 are connected with the N turbine engines 100 in one-
to-one
correspondence. It can be understood that the N fuel gas delivery devices
shown in Fig. 1A are
merely illustrative, and the number of the fuel gas delivery devices 103 can
be larger or smaller
than N. For example, in the case that the number of the fuel gas delivery
devices 103 is smaller
than N, each of the fuel gas delivery devices 103 can supply gaseous fuel to
two or more turbine
engines 100 simultaneously. In the embodiment of the present disclosure, an
example in which
N fuel gas delivery devices 103 are adopted is preferable, because it's
beneficial to realize
independent control of gaseous fuel to the N turbine engines 100.
[0055] For example, the fuel liquid supply apparatus 20 is connected to at
least one of
the N turbine engines and is configured to supply liquid fuel to at least one
of the N turbine
fracturing apparatuses A in the case that at least one of the flow rate and
pressure of the fuel
gas decreases. In the case that at least one of the flow rate and pressure of
the fuel gas decreases,
the flow rate and/or pressure of the gaseous fuel delivered to the plurality
of fuel gas delivery
devices 103 would be reduced correspondingly, and if liquid fuel is not
supplied, the problem
of apparatus shutdown is likely to occur. In the embodiment of the present
disclosure, by
utilizing the fuel liquid supply apparatus 20 to supply liquid fuel to at
least one of the N turbine
fracturing apparatuses A, the above-mentioned problem of apparatus shutdown
can be avoided,
and the normal operation of the turbine fracturing apparatuses A can be
effectively ensured.
[0056] For example, as shown in Figs. 1A and 2, the turbine fracturing
system 1 further
includes a fuel liquid storage device 102, which is arranged on the turbine
fracturing apparatus
A and connected to the turbine engine 100. The fuel liquid supply apparatus 20
supplies the
liquid fuel to the turbine engine through the fuel liquid storage device 102.
That is, one end of
the fuel liquid storage device 102 is connected with the fuel liquid supply
apparatus 20, and
the other end is connected with the turbine engine 100.
[0057] In the embodiment of the present disclosure, the fuel liquid supply
apparatus 20
is, for example, a diesel vehicle, and the number of the diesel vehicle may be
one or more. For
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example, the fuel liquid supply apparatus 20 can be connected with the fuel
liquid storage
device 102 through a fuel liquid delivery device, which can prevent from
liquid leakage during
the liquid delivery so as to improve the safety.
[0058] For example, the number of the fuel liquid storage devices 102 is N,
and the N
fuel liquid storage devices 102 are connected with the N turbine engines 100
in one-to-one
correspondence. It can be understood that the N fuel liquid storage devices
102 shown in Fig.
1A are merely illustrative, and the number of the fuel liquid storage devices
102 can be larger
or smaller than N. For example, in the case that the number of the fuel liquid
storage devices
102 is smaller than N, each of the fuel liquid storage devices 102 can supply
liquid fuel to two
or more turbine engines 100 simultaneously. In the embodiment of the present
disclosure, an
example in which N fuel liquid storage devices 102 are adopted is preferable
because it's
beneficial to realize independent control of liquid fuel to the N turbine
engines 100.
[0059] Fig. 1B is a schematic diagram of a turbine fracturing system
provided
according to another embodiment of the present disclosure. Compared with the
turbine
fracturing system of Fig. 1A, an independent fuel liquid supply apparatus 20
is not provided in
Fig. 1B; instead, the fuel liquid supply apparatus 20 includes a fuel liquid
storage device 102
provided on each of the turbine fracturing apparatuses A. That is, the fuel
liquid supply
apparatus 20 includes N fuel liquid storage devices 102, and the N fuel liquid
storage devices
102 are connected with N turbine engines in one-to-one correspondence. Since
each of the fuel
liquid storage devices 102 stores fuel liquid, the fuel liquid can be supplied
to the corresponding
turbine fracturing apparatus A thereof.
[0060] In the case that the turbine fracturing apparatus A is a turbine
fracturing trailer,
the fuel liquid storage device 102 can move along with the turbine fracturing
trailer so as to
continuously supply fuel liquid to the turbine engine 100 while moving, which
is more suitable
for the use of the turbine fracturing apparatus in different occasions.
[0061] Fig. 3 is a schematic diagram of a measurement and control apparatus
provided
according to an embodiment of the present disclosure. The measurement and
control apparatus
in Fig. 3 can be applied to both the turbine fracturing system in Fig. lA and
the turbine
fracturing system in Fig. 1B. Hereinafter, the measurement and control
apparatus applied to the
turbine fracturing system of Fig. lA will be described as an example.
14
Date Recue/Date Received 2021-08-04
100621 For example, as shown in Figs. lA and 3, the turbine fracturing
system 1 further
includes a measurement and control apparatus 30. For example, the measurement
and control
apparatus 30 includes a data acquisition device 110 and a data processing
device 120. The data
acquisition device 110 is in signal connection with the fuel gas supply
apparatus 10. The data
acquisition device 110 is configured to acquire first fuel gas data of the
fuel gas and send the
first fuel gas data to the data processing device 120.
100631 For example, one end of the data acquisition device 110 is connected
with the
fuel gas supply apparatus 10, and the other end is in signal connection with
the data processing
device 120. In this way, the fuel gas output by the fuel gas supply apparatus
10 can be acquired
by the data acquisition device 110 in real time to generate the first fuel gas
data, and then the
data acquisition device 110 sends the first fuel gas data as acquired to the
data processing device
120.
100641 For example, the first fuel gas data includes at least one of
pressure and flow
rate of the fuel gas. That is, the data acquisition device 110 may be
configured to acquire only
the pressure of the fuel gas, or only the flow rate of the fuel gas, or both
the pressure and the
flow rate. A person skilled in the art can determine the data type of the fuel
gas to be acquired
according to actual needs, which is not specifically limited by the
embodiments of the present
disclosure.
100651 For example, the data acquisition device 110 includes a component
for
measuring the pressure of the fuel gas, such as a pressure sensor. In another
example, the data
acquisition device 110 includes a component for measuring the flow rate of the
fuel gas, such
as a gas flowmeter. It can be understood that the components for measuring the
pressure or the
flow rate of the fuel gas are not specifically limited in the embodiments of
this disclosure, and
any components that can realize the above-mentioned measurement function can
be applied to
the embodiments of this application.
[0066] For example, as shown in Fig. 3, the data processing device 120
includes a
comparison and determination circuit 121 and a control circuit 122. The
comparison and
determination circuit 121 is connected to the data acquisition device 110. The
comparison and
determination circuit 121 is configured to compare the first fuel gas data
with a first threshold
value and determine whether the first fuel gas data is smaller than the first
threshold value. For
Date Recue/Date Received 2021-08-04
example, the first threshold value includes at least one of a first pressure
threshold value
corresponding to the pressure and a first flow rate threshold value
corresponding to the flow
rate.
[0067] For example, the comparison and determination circuit includes a
comparison
circuit. Optionally, the comparison and determination circuit further includes
an amplifier, a
filter, an analog-to-digital converter, etc., so as to better compare and
process the fuel gas data
as acquired. For example, the control circuit includes a controller.
[0068] For example, in the case that the first fuel gas data is gas
pressure, the
comparison and determination circuit 121 is configured to compare the gas
pressure with a first
pressure threshold value. For example, in the case that the first fuel gas
data is gas flow rate,
the comparison and determination circuit 121 is configured to compare the gas
flow rate with
a first flow rate threshold value. For example, in the case that the first
fuel gas data includes
both gas pressure and gas flow rate, the comparison and determination circuit
121 is configured
to compare the gas pressure with the first pressure threshold value and
compare the gas flow
rate with the first flow rate threshold value.
[0069] In this way, after comparing the first fuel gas data with the first
threshold value,
it can be determined whether the first fuel gas data is smaller than the first
threshold value,
thereby confirming whether the flow rate or pressure of the fuel gas output
from the fuel gas
supply apparatus 10 is decreased. In actual operation, because the accuracy of
flow detection
may be better and more intuitive than that of pressure detection, it is
preferable to set the first
fuel gas data as gas flow rate and compare the gas flow rate with the first
gas threshold value.
[0070] For example, the first pressure threshold value includes 90% to 95%
of a
standard pressure, and the first flow rate threshold value includes 90% to 95%
of a standard
flow rate. Further, the first pressure threshold value is 95% of the standard
pressure, and the
first flow rate threshold value is 95% of the standard flow rate. In actual
production, the
standard pressure and standard flow rate refer to design parameters of the
pressure or flow rate
of the fuel gas adopted in the field of hydraulic fracturing. The first
pressure threshold value
can be regarded as an alarm pressure range of the turbine fracturing
apparatus. No matter
whether the pressure or the flow rate is utilized, if the lower limit of the
threshold value is set
to be small (for example, 80%), it would cause a switching failure; and if the
upper limit of the
16
Date Recue/Date Received 2021-08-04
threshold value is set to be great (for example, 98%), it would have no
buffering space and may
cause frequent switching, which goes against a normal and stable operation of
the apparatus.
Therefore, it is preferable to use 90% to 95% of the standard pressure as the
gas pressure, and/or,
to use 90% to 95% of the standard flow rate as the gas flow rate.
[0071] For example, as shown in Fig. 3, the comparison and determination
circuit 121
sends the comparison result to the control circuit 122. The control circuit
122 is in signal
connection with the comparison and determination circuit 121. The control
circuit 122 is
configured to select at least one of the N turbine engines 100 and generate a
first fuel switching
signal in response to the first fuel gas data being smaller than the first
threshold value. The first
fuel switching signal is used for switching the gaseous fuel of at least one
of the N turbine
engines 100 to liquid fuel.
[0072] In case of a fuel gas supply shortage occurred in the well site, the
data
acquisition device 110 sends the first fuel gas data detected in real time to
the comparison and
determination circuit 121. Then, the comparison and determination circuit 121
sends the
comparison result to the control circuit 122. The control circuit 122
automatically generates a
first fuel switching signal for switching gaseous fuel to liquid fuel
according to the comparison
result (i.e,, the first fuel gas data is smaller than the first threshold
value), thereby further
ensuring the normal operation of the turbine fracturing apparatus in the
switching process and
improving the operation safety of operators.
[0073] In the case where the first fuel gas data is the gas pressure, by
way of example,
if the gas pressure is smaller than the first pressure threshold value, the
control circuit 122
selects one of the N turbine engines 100 (for example, the turbine engine 100
on the turbine
fracturing apparatus Al) and generates a first fuel switching signal
corresponding to the
selected turbine engine 100. The first fuel switching signal is used for
instructing the selected
turbine engine 100 to switch from gaseous fuel to liquid fuel. It can be
understood that the
control circuit 122 can select two or more turbine engines 100 for fuel
switching, and the
embodiments of the present disclosure are not intended to limit the number of
turbine engines
100 to be switched.
17
Date Recue/Date Received 2021-08-04
[0074] For example, as shown in Figs. IA and 2, each of the turbine
fracturing
apparatuses A further includes a local control device 104. For example, the
local control device
104 is arranged on the turbine fracturing apparatus A, one end of the local
control device 104
is in signal connection with the data processing device 120 and the other end
is in signal
connection with the turbine engine 100.
[0075] For example, the control circuit 122 of the data processing device
120 is further
configured to send the first fuel switching signal to the local control device
104 which is in
signal connection with the at least one turbine engine 100 as selected.
[0076] For example, as shown in Fig. 3, the data processing device 120
further includes
a communication circuit 123. The local control device 104 includes a local
communication
circuit 133, as shown in Fig. 2. The communication circuit 123 and the local
communication
circuit 133 can realize signal or data transmission there-between through
wired or wireless
communication. The wired communication includes but is not limited to
Ethernet, serial
communication, etc. The wireless communication includes but is not limited to
infrared,
bluetooth, WiFi, GPRS, ZigBee, RFID (radio frequency identification), 4G
mobile
communication, 5G mobile communication and other communication protocols.
[00771 In the case that the control circuit 122 of the measurement and
control apparatus
30 generates the first fuel switching signal, the measurement and control
apparatus 30 can
transmit the first fuel switching signal to the local control device 104 which
is in signal
connection with the selected turbine engine 100, by using the communication
circuit 123 and
the local communication circuit 133. The local control device 104 is
configured to switch the
gaseous fuel of the selected turbine engine 100 to liquid fuel according to
the first fuel
switching signal. Compared with the manual switching of gaseous fuel to liquid
fuel by
operators, the above-described process not only realizes automatic switching
but also avoids
apparatus shutdown, thereby ensuring the safety of operators and saving
considerable
manpower and material costs.
[0078] For example, as shown in Fig. IA, each of the turbine fracturing
apparatuses A
is provided with the fuel liquid storage device 102; in order to control the
supply of liquid fuel
conveniently, the liquid fuel supplied to the selected turbine engine 100 can
be provided by the
fuel liquid storage device 102 on the same turbine fracturing apparatus A as
the selected turbine
18
Date Recue/Date Received 2021-08-04
engine 100, that is, by the fuel liquid storage device 102 connected to the
selected turbine
engine 100.
[0079] For example, as shown in Fig. 2, the local control device 104
further includes:
a local control circuit 131 in signal connection with the local communication
circuit 133; and
a switching circuit 132 in signal connection with the local control circuit
131. The local control
circuit 131 is configured to receive the first fuel switching signal and
control the switching
circuit 132 to realize switching from the gaseous fuel to the liquid fuel. For
example, the
switching circuit 132 includes a selector switch.
[0080] For example, as shown in Fig. 2, a first end El of the switching
circuit 132 is in
signal connection with the local control circuit 131. A second end E2 and a
third end E3 are
respectively connected to the fuel liquid storage device 102 and the fuel gas
delivery device
103 provided on the same turbine fracturing apparatus A. Under the control of
the local control
circuit 131, the switching circuit 132 can switch the fuel gas delivery device
103 to the fuel
liquid storage device 102. In an example, the second end E2 and the third end
E3 of the
switching circuit 132 include a first control valve and a second control valve
respectively
connected to the fuel liquid storage device 102 and the fuel gas delivery
device 103. By opening
the first control valve and closing the second control valve at the same time,
the fuel of the
turbine engine can be switched from gaseous fuel to liquid fuel. For example,
by gradually
opening the first control valve and gradually closing the control valve, a
smooth switching can
be ensured, and the switching time lasts for about 15 seconds.
[0081] In the embodiment of the present disclosure, in order to allow the
turbine
fracturing apparatus to operate for a longer time after switching, when
selecting a turbine
engine to be switched, the turbine engine with the longest operational time
can be selected for
switching, thus further avoiding the shutdown of the turbine fracturing
apparatus caused by
insufficient fuel supply after switching.
[0082] For example, the at least one turbine engine 100 as selected
includes the turbine
engine 100 with the longest operational time. The turbine engine 100 with the
longest
operational time satisfies at least one of the following three conditions: a)
the current liquid
amount of liquid fuel stored in the turbine engine 100 is the largest; B) the
load of the turbine
19
Date Recue/Date Received 2021-08-04
engine 100 is the smallest; and c) the ratio of the current liquid amount of
liquid fuel stored in
the turbine engine 100 to the load of the turbine engine 100 is the highest.
[0083] In the well site, an "oil amount-load ratio" is a result of the
current amount of
liquid oil being divided by the current load. If the oil amount-load ratio is
relatively high, it
means that the apparatus can run for a long time under the current oil amount
of liquid oil; on
the contrary, the running time is shorter. Therefore, among the above three
conditions, it is
preferable to select the turbine engine 100 satisfying the condition c) for
fuel switching.
[0084] As mentioned above, in the case that the first fuel gas data falls
below the first
threshold value due to insufficient fuel gas supply, the turbine engine on at
least one turbine
fracturing apparatus can be selected to switch the fuel thereof from gaseous
fuel to liquid fuel.
lithe first fuel gas data continues to drop and drop speed is fast, the normal
operation of the
turbine fracturing trailer group may not be guaranteed even if the fuel is
switched to liquid fuel.
At this time, it is possible to adjust the total displacement of the turbine
fracturing system 1.
The embodiment of the present disclosure also provides two ways of
automatically adjusting
the displacement, which will be described separately below.
[0085] In another embodiment of the present disclosure, the data
acquisition device 110
is further configured to acquire second fuel gas data of the fuel gas and send
the second fuel
gas data to the data processing device 120. For example, the second fuel gas
data includes a
change rate of the first fuel gas data. The comparison and determination
circuit 121 is further
configured to compare the second fuel gas data with a change rate threshold
value and send a
comparison result to the control circuit 122. The control circuit 122 is
further configured to
adjust the total displacement of the turbine fracturing system 1 according to
the comparison
result.
[0086] Generally, the total displacement of the turbine fracturing system
refers to the
preset displacement of the turbine fracturing trailer group. In the actual
well site, the turbine
fracturing trailer group includes N turbine fracturing apparatuses, so the
preset displacement
of the turbine fracturing trailer group is equal to the sum of the preset
displacements of the N
turbine fracturing apparatuses.
[0087] For example, the change rate of the first fuel gas data includes a
reduction rate
of the first fuel gas data, and the change rate threshold value includes a
reduction rate threshold
Date Recue/Date Received 2021-08-04
value of the first fuel gas data. The comparison and determination circuit 121
is further
configured to compare the second fuel gas data with the reduction rate
threshold value of the
first fuel gas data, and determine whether the second fuel gas data is greater
than or equal to
the reduction rate threshold value of the first fuel gas data. For example,
the reduction rate of
the first fuel gas data includes at least one of a reduction rate of gas flow
rate and a reduction
rate of gas pressure.
[0088] For example, in the case that the second fuel gas data is greater
than or equal to
the reduction rate threshold value of the first fuel gas data, the control
circuit 122 is further
configured to generate a first displacement reduction signal for reducing the
total displacement
of the turbine fracturing system 1 in response to the second fuel gas data
being greater than or
equal to the reduction rate threshold value of the first fuel gas data. Then,
the control circuit
122 sends the first displacement reduction signal to the local control device
104 on each of the
turbine fracturing apparatuses A. The local control device 104 adjusts the
displacement of the
corresponding turbine fracturing apparatus, thereby reducing the total
displacement of the
turbine fracturing system 1.
[0089] In the above embodiments of the present disclosure, the turbine
control system
can automatically adjust the total displacement of the turbine fracturing
system in real time
according to the fuel gas supply status, thereby further ensuring the normal
and stable operation
of the turbine fracturing trailer group. For example, the total displacement
of the turbine
fracturing system refers to the preset displacement of the turbine fracturing
system.
[0090] For example, in the case that the preset displacement decreases, the
turbine
fracturing system will redistribute the displacement of each of the turbine
fracturing
apparatuses in the turbine fracturing system according to the new preset
displacement value.
For example, the automatic allocation of the turbine fracturing system follows
the principle of
load balancing, that is, the displacement of the apparatus with higher load is
preferentially
reduced.
[0091] For example, the reduction rate threshold value includes a reduction
rate preset
value per unit time. In one example, the reduction rate threshold value is 5%
to 15% of the
reduction rate preset value per unit time, for example, 10%. For example, in
the case that the
reduction rate of gaseous fuel per unit time is higher than 10% of the preset
value, the turbine
21
Date Recue/Date Received 2021-08-04
control system will reduce the total displacement of the turbine fracturing
system according to
the reduction rate to prevent the sudden drop of the gas supply system from
affecting the
operation.
[0092] In another embodiment of the present disclosure, as shown in Fig.
1A, the data
acquisition device 110 is in signal connection with each of the N fuel liquid
storage devices
102. The data acquisition device 110 is further configured to acquire the
current total liquid
amount of liquid fuels stored in all the N fuel liquid storage devices 102 and
send the current
total liquid amount to the data processing device 120. As shown in Fig. 1A,
for example, N
fuel liquid storage devices 102 are arranged on the N turbine fracturing
apparatuses A in one-
to-one correspondence, and are connected to the turbine engines 100 in one-to-
one
correspondence. The comparison and determination circuit 121 is further
configured to
compare the current total liquid amount with the total liquid amount threshold
value, and
determine whether the current total liquid amount is smaller than the total
liquid amount
threshold value. In the case that the current total liquid amount is smaller
than the total liquid
amount threshold value, the control circuit 122 is further configured to
generate a second
displacement reduction signal for reducing the total displacement of the
turbine fracturing
system 1 in response to the current total liquid amount being smaller than the
total liquid
amount threshold value.
100931 In the above embodiments of the disclosure, the turbine control
system can
automatically adjust the total displacement of the turbine fracturing system
in real time
according to the current storage status of liquid fuel, thereby further
ensuring the normal and
stable operation of the turbine fracturing trailer group.
00941 As described in the previous embodiments, in the case that the
preset
displacement is reduced, the turbine fracturing system will redistribute the
displacement of
each of the turbine fracturing apparatuses in the turbine fracturing system
according to the new
preset displacement value. For example, the automatic allocation of the
turbine fracturing
system follows the principle of load balancing, that is, the displacement of
the apparatus with
higher load is preferentially reduced.
0095] In one example, the total liquid amount threshold value is 10% to
50% of the
total liquid amount preset value, for example, 20%. For example, in the case
that the current
22
Date Recue/Date Received 2021-08-04
total liquid amount is smaller than 20% of the total liquid amount preset
value, the turbine
control system will reduce the total displacement of the turbine fracturing
system to prevent
the sudden drop of the gas supply system from affecting the operation.
[0096] The above embodiments describe the process that the turbine engine
automatically switches from gaseous fuel to liquid fuel in the case that the
gas supply status of
fuel gas changes from sufficiency to insufficiency. In the case that the gas
supply status of fuel
gas changes from insufficiency to sufficiency, the turbine fracturing system
of the embodiment
of the present disclosure can also control the turbine engine to automatically
switch from liquid
fuel back to gaseous fuel.
[0097] In another embodiment of the present disclosure, the comparison and
determination circuit 121 is further configured to determine whether a turbine
engine 100
switched to the liquid fuel is existed, in response to the first fuel gas data
being greater than or
equal to the first threshold value. In the case that the turbine engine 100
switched to the liquid
fuel is existed, the comparison and determination circuit 121 is further
configured to determine
whether the first fuel gas data is greater than or equal to a second threshold
value in response
to the turbine engine 100 switched to the liquid fuel being existed, wherein
the second threshold
value is greater than the first threshold value. The control circuit 122 is
further configured to
generate a second fuel switching signal for switching the liquid fuel of the
turbine engine 100
back to the gaseous fuel in response to the first fuel gas data being greater
than or equal to the
second threshold value. For example, the second threshold value is
approximately equal to the
standard pressure or the standard flow rate.
[0098] In the above embodiments of the present disclosure, in the case that
the gas
supply status of fuel gas changes from insufficiency to sufficiency, the
turbine fracturing
system can control the turbine engine to automatically switch from liquid fuel
back to gaseous
fuel. It not only ensures the normal operation of the turbine fracturing
apparatus but also
improves the operation safety of operators and reduces the operation
intensity.
[0099] For example, the control circuit 122 is further configured to obtain
the total
number M of the turbine engines 100 having been switched to the liquid fuel,
wherein M is a
positive integer smaller than N. The control circuit 122 is further configured
to select the
turbine engine 100 with the shortest operational time among the M turbine
engines 100 and
23
Date Recue/Date Received 2021-08-04
generate the second fuel switching signal for switching the liquid fuel of the
turbine engine 100
with the shortest operable time back to gaseous fuel.
[00100] For example, the turbine engine 100 with the shortest operational
time satisfies
at least one of the following three conditions: al) the current liquid amount
of liquid fuel stored
in the turbine engine 100 is the smallest; B1) the load of the turbine engine
100 is the largest;
and cl) the ratio of the current liquid amount of liquid fuel stored in the
turbine engine 100 to
the load of the turbine engine 100 is the lowest.
[00101] In the above process of switching from liquid fuel back to gaseous
fuel, the
turbine engine 100 with the shortest operational time is selected firstly for
switching, which
can make the switching process smoother and ensure that other apparatus(es)
with higher oil
amount-load ratio can work normally. In the case that the gas supply status of
the fuel gas
continues to be sufficient, other apparatus(es) can be further selected to
switch the oil fuel as
used, until all the turbine fracturing apparatuses are switched to gaseous
fuel.
[00102] In one example, the turbine control system determines the gas
supply status
depending on the gas pressure. In the case that the gas pressure is lower than
95% of the
standard pressure, the turbine control system automatically selects the
apparatus with the
highest oil amount-load ratio for fuel switching, that is, converting the
gaseous fuel into liquid
fuel. In the case that the gas pressure is higher than 10% of the standard
pressure, which means
that the current gas supply pressure is sufficient, the turbine fracturing
system will select the
apparatus with lowest oil amount-load ratio to switch the oil fuel, that is,
switching the liquid
fuel to gaseous fuel until it is all gaseous fuel.
[00103] In another example, the turbine control system determines the gas
supply status
depending on the gas flow rate. In the case that the gas flow rate is lower
than 95% of the
standard flow rate, the turbine control system automatically selects the
apparatus with the
highest oil amount-load ratio for fuel switching, that is, converting gaseous
fuel into liquid fuel.
In the case that the gas flow rate is equal to or close to the standard flow
rate, which means that
the current gas supply pressure is sufficient, the turbine fracturing system
will select the
apparatus with lowest oil amount-load ratio to switch the oil fuel, that is,
switching the liquid
fuel to gaseous fuel until it is all gaseous fuel.
24
Date Recue/Date Received 2021-08-04
[00104] At least one embodiment of the present disclosure further provides
a controlling
method of a turbine fracturing system.
[00105] Fig. 4 is a flowchart of a controlling method of a turbine
fracturing system
provided according to an embodiment of the present disclosure. For example, as
shown in Fig.
4, the controlling method of the turbine fracturing system includes:
[00106] Step Si, acquiring first fuel gas data of fuel gas, wherein the
fuel gas is
distributed to N turbine engines and used as gaseous fuel of the N turbine
engines, and N is an
integer greater than or equal to 2;
[00107] Step S2, determining whether at least one of a flow rate and a
pressure of the
fuel gas decreases according to the first fuel gas data; and
[00108] Step S3, supplying liquid fuel to at least one of N turbine
fracturing apparatuses
in response to a decrease of the at least one of the flow rate and pressure of
the fuel gas.
[00109] In the controlling method of the turbine fracturing system provided
by the above
embodiments, in the case that at least one of the flow rate and pressure of
the fuel gas decreases,
liquid fuel is supplied to at least one of the N turbine fracturing
apparatuses. That is, in the case
that the fuel gas supplied by the fuel gas supply apparatus is insufficient,
the fuel liquid supply
apparatus can be controlled to automatically supply liquid fuel to the turbine
engine, so that the
normal operation of the N turbine fracturing apparatuses can be ensured and
the turbine
fracturing system can maintain the normal displacement output. Moreover,
because the
switching from gaseous fuel to liquid fuel is automatically completed, the
operation safety of
operators is improved and the labor intensity of manual operation is reduced.
[00110] Fig. 5 is a flowchart of a controlling method of a turbine
fracturing system
provided according to another embodiment of the present disclosure. For
example, as shown
in Fig. 5, the step S2 includes:
[00111] Step S201: comparing the first fuel gas data with a first threshold
value, and
determining whether the first fuel gas data is smaller than the first
threshold value.
[00112] In this case, for example, the step S3 includes:
[00113] Step S301: selecting at least one of the N turbine engines, and
switching the
gaseous fuel of the at least one of the N turbine engines to liquid fuel, in
response to the first
fuel gas data being smaller than the first threshold value.
Date Recue/Date Received 2021-08-04
[00114] For example, the first fuel gas data includes at least one of
pressure and flow
rate of the fuel gas, and the first threshold value includes at least one of a
first pressure threshold
value corresponding to the pressure and a first flow rate threshold value
corresponding to the
flow rate.
[00115] In the embodiment of the present disclosure, the specific
definition of the first
pressure threshold value and the first flow rate threshold value can refer to
the relevant
description in the previous embodiment, and will not be repeated here.
[00116] Further, for example, step S301 includes:
[00117] Step S3011: selecting the turbine engine with the longest
operational time
among the N turbine engines, and switching the gaseous fuel of the turbine
engine with the
longest operational time to the liquid fuel. For example, the turbine engine
with the longest
operational time satisfies at least one of the following three conditions: a)
the current liquid
amount of liquid fuel stored in the turbine engine is the largest; b) the load
of the turbine engine
is the smallest; and c) the ratio of the current liquid amount of liquid fuel
stored in the turbine
engine to the load of the turbine engine is the highest.
[00118] As mentioned above, in the case that the gas supply is insufficient
and the first
fuel gas data drops below the first threshold value, the turbine engine on at
least one turbine
fracturing apparatus can be selected to switch the fuel from gaseous fuel to
liquid fuel. If the
fuel gas continues to drop and the drop speed is fast, the normal operation of
the turbine
fracturing trailer group may not be guaranteed even if the fuel is switched to
liquid fuel. At this
time, it is possible to adjust the total displacement of the turbine
fracturing system 1. The
embodiment of the present disclosure also provides two ways of automatically
adjusting the
displacement, which will be described separately below.
[00119] For example, as shown in Fig. 5, the controlling method of the
turbine fracturing
system further includes:
[00120] Step S4, determining whether the gaseous fuels of all the N turbine
engines are
switched to liquid fuels.
[00121] Fig. 6 is a flowchart of a controlling method of a turbine
fracturing system
provided according to another embodiment of the present disclosure. For
example, as shown
in Fig. 6, the controlling method of the turbine fracturing system further
includes:
26
Date Recue/Date Received 2021-08-04
[00122] Step S5, acquiring second fuel gas data of the fuel gas in response
to the gaseous
fuels of all the N turbine engines having been switched to liquid fuels,
wherein the second fuel
gas data includes a change rate of the first fuel gas data;
[00123] Step S6, comparing the second fuel gas data with a change rate
threshold value;
and
[00124] Step S7, adjusting a total displacement of the turbine fracturing
system
according to a comparison result.
[00125] For example, the change rate of the first fuel gas data includes a
reduction rate
of the first fuel gas data, and the change rate threshold value includes a
reduction rate threshold
value of the first fuel gas data.
[00126] In this case, as shown in Fig. 5, the step S6 includes:
1001271 Step S601, compare the second fuel gas data with the reduction rate
threshold
value of the first fuel gas data, and determining whether the second fuel gas
data is greater than
or equal to the reduction rate threshold value of the first fuel gas data
[00128] In this case, as shown in Fig. 5, the step S7 includes:
[00129] Step S701, reducing the total displacement of the turbine
fracturing system in
response to the second fuel gas data being greater than or equal to the
reduction rate threshold
value of the first fuel gas data.
1001301 In the above embodiments of the present disclosure, the controlling
method of
the turbine control system can automatically adjust the total displacement of
the turbine
fracturing system in real time according to the gas supply status of the fuel
gas, thereby further
ensuring the normal and stable operation of the turbine fracturing trailer
group.
[00131] Fig. 7 is a flowchart of a controlling method of a turbine
fracturing system
provided according to another embodiment of the present disclosure. For
example, as shown
in Fig. 7, the controlling method of the turbine fracturing system further
includes:
[001321 Step S5', acquiring a current total liquid amount of liquid fuels
stored in all the
N turbine engines in response to the gaseous fuels of all the N turbine
engines having switched
to liquid fuels;
001331 S6', comparing the current total liquid amount with a total liquid
amount
threshold value; and
27
Date Recue/Date Received 2021-08-04
[00134] S7', adjusting a total displacement of the turbine fracturing
system according to
a comparison result.
[00135] In this case, as shown in Fig. 5, the step S6' includes:
[00136] Step S611, comparing the current total liquid amount with a total
liquid amount
threshold value, and determining whether the current total liquid amount is
smaller than the
total liquid amount threshold value.
[00137] In this case, as shown in Fig. 5, the step ST includes:
[00138] Step S711, reducing the total displacement of the turbine
fracturing system in
response to the current total liquid amount being smaller than the total
liquid amount threshold
value.
[00139] In the above embodiments of the present disclosure, the controlling
method of
the turbine fracturing system can automatically adjust the total displacement
of the turbine
fracturing system in real time according to the current storage status of the
liquid fuel, thereby
further ensuring the normal and stable operation of the turbine fracturing
trailer group.
[00140] In the case that adjusting the total displacement of the turbine
fracturing system
by adopting any of the above-described ways, for example, as shown in Fig. 5,
the controlling
method further includes:
[00141] Step S8, redistributing a displacement of each of the turbine
fracturing
apparatuses in the turbine fracturing system according to a new preset
displacement value. For
the specific allocation mode, reference may be made to the description of the
previous
embodiments, which will not be repeated here.
[00142] The above embodiments describe the process that the turbine engine
automatically switches from gaseous fuel to liquid fuel in the case that the
gas supply status of
the fuel gas changes from sufficiency to insufficiency. In the case that the
gas supply status of
the fuel gas changes from insufficiency to sufficiency, the turbine fracturing
system of the
embodiment of the present disclosure can also control the turbine engine to
automatically
switch from liquid fuel back to gaseous fuel.
[00143] For example, as shown in Fig. 5, the controlling method of the
turbine fracturing
system further includes:
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Date Recue/Date Received 2021-08-04
[00144] Step S31, determining whether a turbine engine switched to the
liquid fuel is
existed, in response to the first fuel gas data being greater than or equal to
the first threshold
value;
[00145] Step S32, comparing the first fuel gas data and a second threshold
value and
determining whether the first fuel gas data is greater than or equal to the
second threshold value,
in response to the turbine engine switched to the liquid fuel being existed;
[00146] Step S33, switching the liquid fuel of the turbine engine back to
the gaseous
fuel in response to the first fuel gas data being greater than or equal to the
second threshold
value.
[00147] In the above embodiments of the disclosure, in the case that the
gas supply status
of the fuel gas changes from insufficiency to sufficiency, the controlling
method of the turbine
fracturing system can control the turbine engine to automatically switch from
liquid fuel back
to gaseous fuel. It not only ensures the normal operation of the turbine
fracturing apparatus,
but also improves the operation safety of operators and reduces the operation
intensity.
[00148] Further, for example, the step S31 further includes:
[00149] acquiring the total number M of the turbine engine(s) having been
switched to
liquid fuel, wherein M is a positive integer smaller than N.
[00150] Further, for example, the step S33 includes:
[00151] selecting a turbine engine with the shortest operational time among
the M
turbine engines, and switching the liquid fuel of the turbine engine with the
shortest operational
time back to gaseous fuel. For example, the turbine engine with the shortest
operational time
satisfies at least one of the following three conditions: al) the current
liquid amount of liquid
fuel stored in the turbine engine is the smallest; bl) the load of the turbine
engine is the largest;
and cl) the ratio of the current liquid amount of liquid fuel stored in the
turbine engine to the
load of the turbine engine is the lowest.
[00152] In the above process of switching from liquid fuel back to gaseous
fuel, the
turbine engine 100 with the shortest operational time is selected for
switching, which can make
the switching process smoother and ensure that other apparatus(es) with higher
oil amount-
load ratio can work normally. In the case that the gas supply status of fuel
gas continues to be
29
Date Recue/Date Received 2021-08-04
sufficient, other apparatus(es) can be selected to switch oil fuel as used
until all the turbine
fracturing apparatuses are switched to gaseous fuel.
[00153] At least one embodiment of the present disclosure further provides
a controlling
apparatus, including:
[00154] a processor; and
[00155] a memory, wherein a computer-executable code is stored in the
memory, and
the computer-executable code is configured to execute the controlling method
of the turbine
fracturing system according to any of the previous embodiments when executed
by the
processor.
[00156] Fig. 8 is a structural diagram of a controlling apparatus provided
by at least one
embodiment of the present disclosure. For example, the controlling apparatus
400 of the turbine
fracturing system shown in Fig. 8 is suitable for implementing the controlling
method of the
turbine fracturing system provided by the embodiment of the present
disclosure. The
controlling apparatus 400 of the turbine fracturing system can be a terminal
device such as a
personal computer, a notebook computer, a tablet computer and a mobile phone,
and can also
be a workstation, a server, a cloud service and the like. It should be noted
that the controlling
apparatus 400 of the turbine fracturing system shown in Fig. 8 is merely
illustrative, and is not
intended to impact any limitation on the function(s) and application scope of
the embodiments
of the present disclosure.
[00157] As shown in Fig. 8, the controlling apparatus 400 of the turbine
fracturing
system may include a processing device (e.g., a central processor, a graphics
processor, etc.)
410, which may execute various appropriate actions and processes according to
a program
stored in a read only memory (ROM) 420 or a program loaded from a storage
device 480 into
a random access memory (RAM) 430. In the RAM 430, various programs and data
required
for the operation of the controlling apparatus 400 of the turbine fracturing
system are also
stored. The processing device 410, the ROM 420, and the RAM 430 are connected
to each
other through a bus 440. An input/output (I/0) interface 450 is also connected
to the bus 440.
[00158] Generally, the following devices can be connected to the I/O
interface 450: an
input device 460 including, for example, a touch screen, a touch pad, a
keyboard, a mouse, a
camera, a microphone, an accelerometer, a gyroscope, and the like; an output
device 470
Date Recue/Date Received 2021-08-04
including, for example, a liquid crystal display (LCD), a speaker, a vibrator
and the like; a
storage device 480 including, for example, a magnetic tape, a hard disk and
the like; and a
communication device 490. The communication device 490 may allow the
controlling
apparatus 400 of the turbine fracturing system to communicate with other
electronic devices in
a wired or wireless manner, to exchange data. Although Fig. 8 shows a
controlling apparatus
400 of the turbine fracturing system including various devices, it should be
understood that it
is not required to implement or have all the illustrated devices, and the
controlling apparatus
400 of the turbine fracturing system may alternatively implement or have more
or fewer
devices.
[00159] For example, according to an embodiment of the present disclosure,
the
controlling method of the above-described turbine fracturing system can be
implemented as a
computer software program. For example, an embodiment of the present
disclosure includes a
computer program product including a computer program carried on a non-
transient computer-
readable medium, and the computer program includes program codes for executing
the above-
described controlling method of the turbine fracturing system. In such an
embodiment, the
computer program can be downloaded and installed from the network through the
communication device 490, or installed from the storage device 480, or
installed from the ROM
420. When the computer program is executed by the processing device 410, the
functions
defined in the controlling method of the turbine fracturing sy stem provided
by the embodiment
of the present disclosure can be executed.
[00160] At least one embodiment of the present disclosure also provides a
computer-
readable storage medium on which a computer executable code is stored, when
executed by a
processor, the computer executable code causes the processor to execute the
controlling method
of the turbine fracturing system described in any of the previous embodiments.
[00161] Fig. 9 is a schematic diagram of a storage medium provided
according to an
embodiment of the present disclosure. As shown in Fig. 9, a storage medium 500
stores a
computer program executable code 501 non-temporarily. For example, when the
computer
program executable code 501 is executed by a computer, one or more steps in
the controlling
method of the turbine fracturing system according to the above can be
executed.
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Date Recue/Date Received 2021-08-04
[00162] For example, the storage medium 500 can be applied to the
controlling
apparatus 400 of the above-mentioned turbine fracturing system. For example,
the storage
medium 500 may be the memory 420 in the controlling apparatus 400 of the
turbine fracturing
system shown in Fig. 8. For example, the relevant description of the storage
medium 500 can
refer to the corresponding description of the memory 420 in the controlling
apparatus 400 of
the turbine fracturing system shown in Fig. 8, and will not be repeated here.
[00163] In the above embodiments of the present disclosure, the turbine
fracturing
system and the controlling method thereof, the controlling apparatus and the
computer-readable
storage medium have at least the following technical effects: 1) the fuel can
be automatically
switched by monitoring the gas supply status of the fuel gas, thus reducing
the labor intensity
of manual operation and ensuring operation safety; 2) the displacement of the
turbine fracturing
system can be adjusted more quickly, with low cost and high safety; 3) an
automatic operation
can be realized, and the problem of shutting down the entire trailer group
caused by untimely
switching can be avoided.
[00164] In the present disclosure, the following should be noted:
[00165] (1) The accompanying drawings involve only the structure(s) in
connection with
the embodiment(s) of the present disclosure, and other structure(s) can be
referred to common
design(s).
1001661 (2) In case of no conflict, features in one embodiment or in
different
embodiments can be combined as a new embodiment.
[00167] What is described above is related to the exemplary embodiments of
the
disclosure only, but the protection scope of the present disclosure is not
limited to this. Any
ordinary person skilled in the art can easily construct changes or
substitutions within the
technical scope disclosed in the present disclosure, and these changes or
substitutions shall be
encompassed by the protection scope of this disclosure. Accordingly, the
protection scope of
the disclosure should be defined by the accompanying claims.
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