CN208564846U - A kind of denoising device of wind power generating set blade - Google Patents
A kind of denoising device of wind power generating set blade Download PDFInfo
- Publication number
- CN208564846U CN208564846U CN201820800777.XU CN201820800777U CN208564846U CN 208564846 U CN208564846 U CN 208564846U CN 201820800777 U CN201820800777 U CN 201820800777U CN 208564846 U CN208564846 U CN 208564846U
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- wind power
- blade
- generating set
- power generating
- strip structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
A kind of denoising device of wind power generating set blade, the denoising device is zigzag strip structure, the zigzag strip structure is installed on the trailing edge of the wind power generating set blade 70%-100% span, the zigzag strip structure includes sawtooth and mounting surface, the sawtooth height is the 10%-20% of blade local chord, and fluctuates in half-sine wave.The utility model provides a kind of denoising device of wind power generating set blade, can reduce blade swing flap Noisy acoustic power grade, while inhibiting noise modulated, reduces noise annoyance level, and with simple, the low in cost advantage of structure, exploitativeness is strong.
Description
Technical field
The utility model belongs to wind power generating set field, is related to a kind of denoising device of wind power generating set blade.
Background technique
With the gradually exploitation of wind-resources, existing part wind power generating set is installed on densely populated areas at present, therewith
It brings wind power generating set noise to disturb residents problem, is brought to wind power plant local resident constant, while also increasing wind power resources and opening
The difficulty of hair, is unfavorable for industry development, and the noise reduction demand of wind power generating set is extremely urgent.
The Main Noise Sources of wind power generating set are blade swing flap noise, and existing patent installs sawtooth on blade trailing edge
The denoising devices such as item, hairbrush and optimization structure, Chinese patent 201610140112.6 optimize individual sawtooth angles, China
Sawtooth is optimized for cross-shaped structure by patent 201610728252.5, and the noise reduction effect of above-mentioned patent is that continuous Equivalent A weighted is made an uproar
Several power stages reduce 2-3dB (A), but prior art cannot weaken the noise lower than 500Hz, and low-frequency noise is wind-power electricity generation
Equipment acoustic noise generates worried principal element.
Summary of the invention
In order to which overcome the shortcomings of existing wind power generating set noise reduction mode can not eliminate low-frequency noise, the utility model is mentioned
The denoising device for having supplied a kind of wind power generating set blade can reduce blade swing flap Noisy acoustic power grade, while inhibit noise
Modulation reduces noise annoyance level, and with simple, the low in cost advantage of structure, exploitativeness is strong.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of denoising device of wind power generating set blade, the denoising device are zigzag strip structure, the sawtooth
Shape strip structure is installed on the trailing edge of the wind power generating set blade 70%-100% span, and the zigzag strip structure includes saw
Tooth and mounting surface, the sawtooth height are the 10%-20% of blade local chord, and fluctuate in half-sine wave.
Further, the tooth width is the 25%-50% of sawtooth height.
Further, the mounting surface height is the 25%-50% of sawtooth height, is not less than 50mm.
The manufacture material of the zigzag strip structure is glass fiber compound material or carbon fibre composite, the saw
The thickness of tooth form strip structure is not more than 5mm.
In the utility model, the sawtooth height of Saw blade changes in half-sine wave, and the sine wave wavelength and blade are local
Aerofoil profile operating status Reynolds number is related, and principle is to change the formation of wake turbulence, and large scale regular vortex is broken up as small ruler
Very little irregular vortex reduces the worried degree of noise, while can reduce blade swing flap sound to effectively inhibit low-frequency noise
Power stage.
The beneficial effects of the utility model are mainly manifested in: can reduce blade swing flap noise, especially low-frequency noise, can have
Effect solution wind power plant problem of noise pollution, the advantage that the utility model has structure simple, low in cost, exploitativeness are strong.
Detailed description of the invention
Fig. 1 is zigzag strip structure schematic view of the mounting position.
Fig. 2 is zigzag strip structure case study on implementation.
Fig. 3 is zigzag strip structure carrying out step by step case.
Wherein, 1 be wind power generating set blade, 2 be zigzag strip structure, 3 be blade rear, 4 be blade leading edge, 5
It is aerofoil profile chord length for sine wave wavelength, 6,7 be tooth width, and 8 be sawtooth height, and 9 be mounting surface height.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Referring to Fig.1~Fig. 3, a kind of denoising device of wind power generating set blade, the denoising device are zigzag strip
Structure 2, the zigzag strip structure 2 are installed on the trailing edge of the wind power generating set blade 70%-100% span, the sawtooth
Shape strip structure includes sawtooth and mounting surface, and the sawtooth height 8 is the 10%-20% of blade locality aerofoil profile chord length 6, and in half
Sine wave fluctuation.
Further, the tooth width 7 is the 25%-50% of sawtooth height 8.
Further, the mounting surface height 9 is the 25%-50% of sawtooth height 8, is not less than 50mm.
The manufacture material of the zigzag strip structure 2 be glass fiber compound material or carbon fibre composite, it is described
The thickness of zigzag strip structure 2 is not more than 5mm.
As shown in Figure 1, the denoising device is zigzag strip structure 2, it is installed on wind power generating set blade 1
The trailing edge of the 70%-100% span, the wind power generating set blade 1 are equipped with blade rear 3 and blade leading edge 4.
As shown in Fig. 2, 2 sectional of the zigzag strip structure manufacture and installation, different spanwises are arranged different
The zigzag strip structure 2 of specification.
Zigzag strip structure 2 as shown in Figure 3 includes sawtooth and mounting surface, and the tooth width 7 is sawtooth height 8
25%-50%, the sawtooth height 8 be blade locality aerofoil profile chord length 6 10%-20%, and in half-sine wave fluctuate, it is described just
String wave wavelength 5 is related with blade locality aerofoil profile operating status Reynolds number, and the mounting surface height 9 is the 25%- of sawtooth height 8
50%, it is not less than 50mm.
The manufacture material of the zigzag strip structure 2 is glass fiber compound material or carbon fibre composite, is laid with 2
~3 layer of 3 axis glass composite material or carbon fibre composite, using epoxy resin perfusion at plate, thickness is not more than 5mm,
The Saw blade of different size is cut into according to design, the installation of zigzag strip structure preferably uses High-strength glue to be bonded, should not use
Bolt or rivet are fixed, and prevent damage blade rear, and there may be additional noises.
It needs to be encapsulated with putty, anti-corrosion material after the completion of the zigzag strip structure bonding, guarantees Saw blade mounting surface
It is smooth.
Claims (3)
1. a kind of denoising device of wind power generating set blade, which is characterized in that the blade denoising device is zigzag strip
Structure, the zigzag strip structure are installed on the trailing edge of the wind power generating set blade 70%-100% span, the zigzag
Strip structure includes sawtooth and mounting surface, and the sawtooth height is the 10%-20% of blade local chord, and is in half-sine wave wave
It is dynamic；The tooth width is the 25%-50% of sawtooth height.
2. a kind of denoising device of wind power generating set blade as described in claim 1, which is characterized in that the mounting surface
Height is the 25%-50% of sawtooth height, is not less than 50mm.
3. a kind of denoising device of wind power generating set blade as described in claim 1, which is characterized in that the zigzag item
The manufacture material of shape structure is glass fiber compound material or carbon fibre composite, and the thickness of the zigzag strip structure is not
Greater than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800777.XU CN208564846U (en) | 2018-05-28 | 2018-05-28 | A kind of denoising device of wind power generating set blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800777.XU CN208564846U (en) | 2018-05-28 | 2018-05-28 | A kind of denoising device of wind power generating set blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208564846U true CN208564846U (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820800777.XU Active CN208564846U (en) | 2018-05-28 | 2018-05-28 | A kind of denoising device of wind power generating set blade |
Country Status (1)
| Country | Link |
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| CN (1) | CN208564846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533450A (en) * | 2018-05-28 | 2018-09-14 | 浙江运达风电股份有限公司 | A kind of denoising device of wind power generating set blade |
-
2018
- 2018-05-28 CN CN201820800777.XU patent/CN208564846U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533450A (en) * | 2018-05-28 | 2018-09-14 | 浙江运达风电股份有限公司 | A kind of denoising device of wind power generating set blade |
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