CN206017046U - A kind of denoising structure of blade of wind-driven generator - Google Patents
A kind of denoising structure of blade of wind-driven generator Download PDFInfo
- Publication number
- CN206017046U CN206017046U CN201620945628.3U CN201620945628U CN206017046U CN 206017046 U CN206017046 U CN 206017046U CN 201620945628 U CN201620945628 U CN 201620945628U CN 206017046 U CN206017046 U CN 206017046U
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- China
- Prior art keywords
- blade
- noise reduction
- cross
- length
- reduction part
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- Wind Motors (AREA)
Abstract
The utility model discloses a kind of denoising structure of blade of wind-driven generator, including multiple cross noise reduction parts, the plurality of cross noise reduction part interval is evenly distributed on blade and opens up on the 75% 95% corresponding trailing edges in position or on the whole trailing edges of blade, and the arrangement pitch of cross noise reduction part for cross noise reduction part length 40% 50% two-by-two, each cross noise reduction part is constituted by two orthogonal class Pear-Shaped flat pieces, the narrow end of the flat pieces is outwardly, its cross section is ellipse, its maximum gauge is less than or equal to trailing edge thickness, and be gradually reduced along airflow direction, the Breadth Maximum of the flat pieces is 20% the 30% of its length, its length control in blade chord length 15% 25%.This utility model can effectively reduce the noise of blade, while improving the pneumatic efficiency of blade.
Description
Technical field
This utility model is related to the technical field of wind generator set blade blade tip noise-reducing design, refers in particular to a kind of wind-force
The denoising structure of generator blade.
Background technology
Known in the industry, when wind-driven generator is in running order, the blade of rotation, especially blade tip can be with very high linear speeds
Degree cutting air produces aerodynamic noise.Now there are some researches show that aerodynamic noise mechanism can be divided into following a few classes：
A) boundary layer airflow comes off from trailing edge；B) boundary layer separation；C) the unstable caused vortex shedding in boundary region；D) because of blade
Blunt trailing edge and the vortex shedding that produces.
With the development of wind-power electricity generation, be suitable for wind-power electricity generation remote districts will saturation, develop from the crowd is dense area
Wind resource imperative, but noise is excessive, then can affect the orthobiosiss of resident, becomes wind-power electricity generation and develops people
The obstacle of group's close quarters wind resource.
The blade of low noise becomes the key of exploitation crowd's close quarters.Now, there are suitable many low noise blades
Structure, for example：The additional sawtooth device of trailing edge；The hairbrush of imitative owl feather；Vortex generator, etc..
In the main method that blade of wind-driven generator trailing edge additional noise reduction device becomes present noise reduction, as follows：
EP1314885A1 discloses a kind of flexible zigzag trailing edge of blade for wind power generator rotor, improves
The efficiency of its existing wind power generator rotor, it is proposed that serrated plate is attached at least one of trailing edge of wind turbine blade
On point.By using zigzag trailing edge, the lift and drag characteristic of lifting surface can be improved.
EP0652367A1 proposes the wind turbine with the trailing edge with zigzag fashion.In order to obtain this shape, can
To use zigzag bar, which is fixed to the trailing edge of rotor blade.
US2008/0166241 A1 disclose a kind of wind turbine blade brush, and wherein mane or brush is mounted in wind-force whirlpool
On the outer surface of impeller blade.The effect of mane is to realize Noise Reduction.Mane could be arranged to the longitudinal direction along blade
An at least row or the vicinity in trailing edge.
DE10340978B1 similarly discloses a kind of wind turbine blade with the brush for being attached to trailing edge, wherein brushes
Every fiber all bifurcateds of son.The bifurcated of brush imitates the feather of owl.
CN201380049838.3 on the basis of existing broached-tooth design the more detailed parameter for defining sawtooth and
Its both sides and the angle and its position of trailing edge, so as to the noise reduction being optimal.
Content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and shortcoming, there is provided one kind designs uniqueness, rationally may be used
Lean on, the denoising structure of the blade of wind-driven generator of effect is significant, can effectively reduce the noise of blade, at the same improve blade pneumatic
Efficiency.
For achieving the above object, technical scheme provided by the utility model is：A kind of noise reduction of blade of wind-driven generator
Structure, includes multiple cross noise reduction parts, and the plurality of cross noise reduction part interval is evenly distributed on blade and opens up to 75%-95%
On the corresponding trailing edge in position or on the whole trailing edges of blade, and the arrangement pitch of cross noise reduction part is two adjacent crosss two-by-two
40%-50% of distance between center lines of the noise reduction part on respective length direction for cross noise reduction part length, each cross
Noise reduction part is constituted by two orthogonal class Pear-Shaped flat pieces, and the length of two flat pieces is completely overlapped and described flat
The narrow end of part outwardly, its cross section for ellipse, its maximum gauge be less than or equal to trailing edge thickness, and along airflow direction by
Decrescence little, the Breadth Maximum of the flat pieces is the 20%-30% of its length, 15%-25% of its length control in blade chord length.
Rounded corner transition is adopted between the noise reduction part of cross two-by-two.
Hemisphere jut or cylindrical protrusions are distributed with the flat pieces.
This utility model compared with prior art, has the advantage that and beneficial effect：
The denoising structure that this utility model is provided, by changing the stream condition of trailing edge, so that reach the mesh of noise reduction
's.For the blade for not increasing denoising structure, can produce compared with maelstrom at edge behind, be vortexed as the main of blade aerodynamic noise
Source.Denoising structure in this utility model can break up above-mentioned vortex, so as to reach the purpose of noise reduction.
Description of the drawings
Structural representations of the Fig. 1 for blade of wind-driven generator.
Fig. 2 is the blade local axonometric drawing with cross noise reduction part.
Fig. 3 is the blade partial top view with cross noise reduction part.
Fig. 4 is the blade partial sectional view with cross noise reduction part.
Fig. 5 is cross noise reduction part sectional view.
Fig. 6 is the cross noise reduction part schematic diagram with spherical structure.
Specific embodiment
With reference to specific embodiment, the utility model is described in further detail.
Embodiment 1
As shown in Figures 1 to 5, the denoising structure of the blade of wind-driven generator described in the present embodiment, includes multiple crosses
Shape noise reduction part 1, the plurality of interval of cross noise reduction part 1 are evenly distributed on blade 2 and open up trailing edge 3 corresponding to 75%-95% positions
On the upper or whole trailing edges 3 of blade, blade inlet edge 4 keeps constant, and the arrangement pitch a of cross noise reduction part 1 two-by-two is (i.e. biphase
Distance between center lines of the adjacent cross noise reduction part 1 on respective length direction) for cross noise reduction part length b 40%-50%,
Each cross noise reduction part 1 is constituted by two orthogonal class Pear-Shaped flat pieces, and the length of two flat pieces is completely overlapped,
And the narrow end of the flat pieces is outwardly, its cross section is that ellipse, its maximum gauge are less than or equal to trailing edge thickness, and edge
Airflow direction is gradually reduced, and the Breadth Maximum c of the flat pieces is that (i.e. the 20%-30% of length b), its length are (i.e. long for its length
Degree b) controls the 15%-25% in blade chord length (20% is optimal).
Additionally, in order to avoid producing unnecessary vortex, adopting 5 transition of rounded corner two-by-two between cross noise reduction part.
The above-mentioned denoising structure of the present embodiment can be produced by modes such as injection or 3D printings, be then attached at existing
Trailing edge position, reduce the purpose of noise.
Embodiment 2
Hemisphere jut (as shown in Figure 6) is distributed with the flat pieces described in the present embodiment as different from Example 1.
Embodiment 3
Cylindrical protrusions (in figure be not drawn into) are distributed with the flat pieces described in the present embodiment as different from Example 1.
The examples of implementation of the above preferred embodiment only for this utility model, is not limited with this of the present utility model
Practical range, therefore the change made by all shapes according to this utility model, principle, all should cover in protection domain of the present utility model
Interior.
Claims (3)
1. a kind of denoising structure of blade of wind-driven generator, it is characterised in that：Include multiple cross noise reduction parts, the plurality of ten
Font noise reduction part interval is evenly distributed on blade and opens up on the corresponding trailing edge in 75%-95% positions or on the whole trailing edges of blade,
And the arrangement pitch of cross noise reduction part is centreline spacing of the two adjacent cross noise reduction parts on respective length direction two-by-two
From the 40%-50% for cross noise reduction part length, each cross noise reduction part is by the orthogonal class Pear-Shaped of two identicals
Flat pieces are constituted, and the length of two flat pieces is completely overlapped, and the narrow end of the flat pieces is outwardly, and its cross section is ellipse
Shape, its maximum gauge are less than or equal to trailing edge thickness, and are gradually reduced along airflow direction, and the Breadth Maximum of the flat pieces is
The 20%-30% of its length, 15%-25% of its length control in blade chord length.
2. the denoising structure of a kind of blade of wind-driven generator according to claim 1, it is characterised in that：The cross two-by-two
Rounded corner transition is adopted between shape noise reduction part.
3. the denoising structure of a kind of blade of wind-driven generator according to claim 1, it is characterised in that：On the flat pieces
Hemisphere jut or cylindrical protrusions are distributed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945628.3U CN206017046U (en) | 2016-08-26 | 2016-08-26 | A kind of denoising structure of blade of wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945628.3U CN206017046U (en) | 2016-08-26 | 2016-08-26 | A kind of denoising structure of blade of wind-driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017046U true CN206017046U (en) | 2017-03-15 |
Family
ID=58252675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620945628.3U Withdrawn - After Issue CN206017046U (en) | 2016-08-26 | 2016-08-26 | A kind of denoising structure of blade of wind-driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168193A (en) * | 2016-08-26 | 2016-11-30 | 广东明阳风电产业集团有限公司 | A kind of denoising structure of blade of wind-driven generator |
| 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 |
-
2016
- 2016-08-26 CN CN201620945628.3U patent/CN206017046U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168193A (en) * | 2016-08-26 | 2016-11-30 | 广东明阳风电产业集团有限公司 | A kind of denoising structure of blade of wind-driven generator |
| CN106168193B (en) * | 2016-08-26 | 2018-12-21 | 明阳智慧能源集团股份公司 | A kind of denoising structure of blade of wind-driven generator |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170706 Address after: 300450, No. two, No. 526, building six, hi tech Road, Binhai hi tech Zone, Binhai 13888, Jin Han Road, Tianjin Patentee after: Tianjin Mingyang wind power equipment Co., Ltd. Address before: 528437 Guangdong torch hi tech Industrial Development Zone, Torch Road, No. 22, Ming Yang Industrial Park, Zhongshan Patentee before: Guangdong Mingyang Wind Power Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180524 Address after: 528437 Mingyang Industrial Park, 22 Torch Road, Zhongshan high tech Industrial Development Zone, Guangdong, China Patentee after: Ming Yang wisdom Energy Group AG Address before: 300450 Tianjin Jinhan highway 13888 Binhai hi tech Zone, Binhai science and Technology Park, No. six, No. 526, No. six high tech road. Patentee before: Tianjin Mingyang wind power equipment Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20181221 |
|
| AV01 | Patent right actively abandoned |