Canadian Patents Database / Patent 2818201 Summary

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(12) Patent: (11) CA 2818201
(54) English Title: NOISE REDUCER FOR ROTOR BLADE IN WIND TURBINE
(54) French Title: REDUCTEUR DE BRUIT POUR PALE DE ROTOR DANS UNE TURBINE EOLIENNE
(51) International Patent Classification (IPC):
  • F03D 1/06 (2006.01)
  • F03D 11/00 (2006.01)
(72) Inventors (Country):
  • LIU, LIHUA (China)
(73) Owners (Country):
  • GENERAL ELECTRIC COMPANY (United States of America)
(71) Applicants (Country):
  • GENERAL ELECTRIC COMPANY (United States of America)
(74) Agent: CRAIG WILSON AND COMPANY
(45) Issued: 2014-11-18
(86) PCT Filing Date: 2010-11-30
(87) PCT Publication Date: 2012-06-07
Examination requested: 2013-09-12
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract

A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a mounting plate and a noise reducer. The mounting plate is configured on a surface of the rotor blade. The noise reducer may include a base plate and a plurality of noise reduction features. The base plate is mounted to the mounting plate. The plurality of noise reduction features extend from the base plate.


French Abstract

L'invention porte sur un ensemble pale de rotor pour une turbine éolienne. L'ensemble pale de rotor comprend une pale de rotor ayant des surfaces qui définissent un côté pression, un côté aspiration, un bord d'attaque et un bord de fuite s'étendant entre une extrémité et un pied. L'ensemble pale de rotor comprend en outre une plaque de montage et un réducteur de bruit. La plaque de montage est conçue sur une surface de la pale de rotor. Le réducteur de bruit peut comprendre une plaque de base et une pluralité de formations de réduction de bruit. La plaque de base est montée sur la plaque de montage. La pluralité de formations de réduction de bruit s'étendent à partir de la plaque de base.


Note: Claims are shown in the official language in which they were submitted.

WHAT IS CLAIMED IS:
1. A rotor blade assembly for a wind turbine, comprising:
a rotor blade having surfaces defining a pressure side, a suction side, a
leading edge, and a trailing edge extending between a tip and a root;
a mounting plate configured on a surface of the rotor blade; and,
a noise reducer, the noise reducer comprising a base plate and a plurality of
noise reduction features, the base plate fastened to the mounting plate, the
plurality of
noise reduction features extending from the base plate.
2. The rotor blade assembly of claim 1, wherein the mounting plate
extends through a surface of the rotor blade.
3. The rotor blade assembly of claim 1, wherein the mounting plate
and one of the pressure side and the suction side are co-infused.
4. The rotor blade assembly of claim 1, wherein the mounting plate is
disposed between the pressure side and the suction side.
5. The rotor blade assembly of claim 1, wherein the mounting plate is
configured on the trailing edge.
6. The rotor blade assembly of claim 1, wherein the surfaces of the
rotor blade further define a rotor blade interior, wherein the rotor blade
further
comprises a lightning protection device disposed at least partially in the
rotor blade
interior, and wherein the mounting plate is operatively connected to the
lighting
protection device.
7. The rotor blade assembly of claim 6, further comprising a
conduction cable operatively connecting the mounting plate to the lightning
protection
device.
8. The rotor blade assembly of claim 1, further comprising at least one
mechanical fastener mounting the base plate to the mounting plate.
12

9. The rotor blade assembly of claim 1, wherein the mounting plate
includes one of a male fastening device or a female fastening device, wherein
the base
plate includes the other of the male fastening device or the female fastening
device,
and wherein the male fastening device and female fastening device are
configured to
couple the base plate and the mounting plate together.
10. The rotor blade assembly of claim 1, wherein the plurality of noise
reduction features are a plurality of serrations.
11. The rotor blade assembly of claim 6, wherein the mounting plate
extends through a surface of the rotor blade.
12. The rotor blade assembly of claim 6, wherein the mounting plate
and one of the pressure side and the suction side are co-infused.
13. The rotor blade assembly of claim 6, wherein the mounting plate is
disposed between the pressure side and the suction side.
14. The rotor blade assembly of claim 6, wherein the mounting plate is
configured on the trailing edge.
15. The rotor blade assembly of claim 6, further comprising at least one
mechanical fastener mounting the noise reducer to the mounting plate.
16. The rotor blade assembly of claim 6, wherein the mounting plate
includes one of a male fastening device or a female fastening device, wherein
the
noise reducer includes the other of the male fastening device or the female
fastening
device, and wherein the male fastening device and female fastening device are
configured to couple the noise reducer and the mounting plate together.
17. The rotor blade assembly of claim 6, wherein the plurality of noise
reduction features are a plurality of serrations.
13


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(86) PCT Filing Date 2010-11-30
(87) PCT Publication Date 2012-06-07
(85) National Entry 2013-05-16
Examination Requested 2013-09-12
(45) Issued 2014-11-18
Lapsed 2017-11-30

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Filing $400.00 2013-05-16
Maintenance Fee - Application - New Act 2 2012-11-30 $100.00 2013-05-16
Request for Examination $800.00 2013-09-12
Maintenance Fee - Application - New Act 3 2013-12-02 $100.00 2013-10-31
Registration of Documents $100.00 2014-04-10
Final $300.00 2014-08-27
Maintenance Fee - Application - New Act 4 2014-12-01 $100.00 2014-10-31
Maintenance Fee - Patent - New Act 5 2015-11-30 $200.00 2015-11-23

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Document
Description
Date
(yyyy-mm-dd)
Number of pages Size of Image (KB)
Description 2013-11-12 11 577
Description 2013-09-12 11 577
Abstract 2013-05-16 1 58
Claims 2013-05-16 2 95
Drawings 2013-05-16 7 96
Description 2013-05-16 11 584
Representative Drawing 2013-05-16 1 14
Cover Page 2013-08-09 1 39
Claims 2014-02-28 2 70
Representative Drawing 2014-10-24 1 10
Cover Page 2014-10-24 1 40
Prosecution-Amendment 2013-09-19 1 19
PCT 2013-05-16 3 77
Correspondence 2013-06-20 1 22
Correspondence 2013-07-18 2 50
Prosecution-Amendment 2013-09-12 6 189
Prosecution-Amendment 2013-10-02 3 108
Prosecution-Amendment 2013-11-12 5 215
Prosecution-Amendment 2013-12-06 4 191
Prosecution-Amendment 2014-02-28 5 157
Correspondence 2014-08-27 1 28