CN209261727U - A kind of noise reduction trailing edge formations of blade of wind-driven generator - Google Patents
A kind of noise reduction trailing edge formations of blade of wind-driven generator Download PDFInfo
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- CN209261727U CN209261727U CN201821587860.XU CN201821587860U CN209261727U CN 209261727 U CN209261727 U CN 209261727U CN 201821587860 U CN201821587860 U CN 201821587860U CN 209261727 U CN209261727 U CN 209261727U
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- trailing edge
- blade
- sawtooth
- section
- wind
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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
The utility model discloses a kind of noise reduction trailing edge formations of blade of wind-driven generator, the periodical recess that there are the trailing edge formations multiple spanwise directions to extend, its form is to extend sawtooth, the extension sawtooth is attached to blade of wind-driven generator and opens up on the corresponding rear section in the position 50%-96% or on the rear section of blade of wind-driven generator whole, section is extended by the blade trailing edge as extended segment and sawtooth two parts form, blade trailing edge extends the control of section length in the 0.1%-10% of leaf chord length, zigzag intervals are evenly distributed on blade trailing edge and extend on section, sawtooth length controls the 10%-30% in leaf chord length, sawtooth can extend section relative to fixed blade trailing edge and do corresponding deflection adjusting with the speed and angle of air-flow.The utility model can effectively improve the efficiency of blade of wind-driven generator, while reduce the noise of blade of wind-driven generator.
Description
Technical field
The utility model relates to the technical fields of renewable new energy wind electricity blade, refer in particular to a kind of wind-driven generator leaf
The noise reduction trailing edge formations of piece.
Background technique
In recent years, China's wind-powered electricity generation industry was fast-developing, and wind energy has become the third-largest energy in China.With wind energy industry
Fast development, be suitble to wind power generation industry to hasten towards saturation day from far-off regions, the layout of wind power plant is more and more closer apart from residential block,
However, will affect the normal life of resident by the noise that wind power generating set generates, this seriously constrains that the crowd is dense region wind
The development and utilization of power resource.Therefore, it is necessary to which the noise generated to wind power generating set controls.
Existing research shows that the Main Noise Sources of wind power generating set are the aerodynamic noise of the rear of blade exterior span,
And the aerodynamic noise that blade generates is approximatively directly proportional to 5 powers of tip speed, the intensity for the aerodynamic noise that blade generates
It is also influenced by factors with frequency, such as property, the size of blade trailing edge, the shape of blade trailing edge of fluid.
The major measure of the existing aerodynamic noise for reducing wind-driven generator has two major classes: one kind is by adjusting propeller pitch angle
Or speed change limits tip speed, i.e., meets noise constraints, this reduction wind energy conversion system by reducing the power of wind-driven generator
The method of blade aerodynamic noise is carried out on the basis of sacrificing wind driven generator output power and being cost, to a certain extent
Reduce the utilization efficiency of wind energy；One kind is to add sawtooth denoising structure in blade trailing edge, is only capable of a certain along trailing edge in wind
Noise is reduced when certain party flows up, when wind direction changes, the noise reduction effect of sawtooth denoising structure be may be decreased.
Therefore, how wind power generating set generating efficiency is promoted for offer and at the same time reducing blade of wind-driven generator
The design of aerodynamic noise caused by flowing, which exists, to be needed.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, and wind-driven generator can effectively be promoted by proposing one kind
Vane efficiency and the noise reduction trailing edge formations for reducing blade noise.
To achieve the above object, a kind of technical solution provided by the utility model are as follows: noise reduction of blade of wind-driven generator
Trailing edge formations, the periodical recess that there are the trailing edge formations multiple past spanwise directions to extend, form are to extend sawtooth, this prolongs
It stretches sawtooth and is attached to blade of wind-driven generator and open up on the corresponding rear section in the position 50%-96% or in wind-driven generator leaf
On the rear section of piece whole, section is extended by the blade trailing edge as extended segment and sawtooth two parts form, the blade trailing edge
Extending section, for attachment on blade trailing edge, the blade trailing edge extends section and blade trailing edge joint place by way of stickup
Shape is consistent with blade trailing edge shape, and the blade trailing edge extends section and is gradually reduced along airflow direction, length control
The 0.1%-10% in leaf chord length is made, the zigzag intervals are evenly distributed on blade trailing edge and extend on section, the sawtooth length
The 10%-30% in leaf chord length is controlled, the sawtooth can integrally extend section with air-flow relative to fixed blade trailing edge
Speed and angle are done corresponding deflection and are adjusted.
Further, the blade trailing edge extends between section and sawtooth and is connected by opening ferrule type, and the blade trailing edge prolongs
Meropodium is provided with opening cutting ferrule along the tail end of airflow direction, and described sawtooth one end is provided with connecting shaft, and sawtooth can by shaft
Extend section relative to blade trailing edge and does corresponding deflection adjusting with the speed and angle of air-flow.
The utility model compared with prior art, have the following advantages that with the utility model has the advantages that
1, the utility model by opening up on the corresponding rear section in the position 50%-96% in blade of wind-driven generator or
It is attached on the rear section of blade of wind-driven generator whole and extends sawtooth, can effectively promote the lift resistance ratio of blade or improve blade
Air dynamic behaviour, thus optimize wind power generator rotor energy output.
2, the utility model changes the air flow condition of blade of wind-driven generator rear by extending sawtooth, to be effectively reduced
The rear noise of blade of wind-driven generator, and sawtooth extends section with the speed and angle of air-flow relative to fixed blade trailing edge
It does corresponding deflection to adjust, existing noise reduction technology can be solved the problems, such as to the change bad response of trailing edge airflow direction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of blade of wind-driven generator.
Fig. 2 is to have attached the blade of wind-driven generator part axonometric drawing for extending sawtooth.
Fig. 3 is to have attached the blade of wind-driven generator partial top view for extending sawtooth.
Fig. 4 is to have attached the blade of wind-driven generator partial sectional view for extending sawtooth.
Fig. 5 is the scheme of installation that blade trailing edge extends section and sawtooth.
Fig. 6 is the structural schematic diagram of sawtooth.
Specific embodiment
The utility model is described in further detail combined with specific embodiments below.
As shown in Figures 1 to 6, the noise reduction trailing edge formations of blade of wind-driven generator provided by the present embodiment have multiple
The periodical recess extended toward spanwise direction, form are to extend sawtooth 2, which is attached to blade of wind-driven generator 1
It opens up on the corresponding rear section in the position 50%-96% or on the whole rear section of blade of wind-driven generator 1, by conduct
The blade trailing edge of extended segment extends section 21 and 22 two parts of sawtooth composition, and the blade trailing edge extends section 21 by way of stickup
For attachment on blade trailing edge, the blade trailing edge extends shape and blade trailing edge shape of the section 21 with blade trailing edge joint place
It is consistent, and the blade trailing edge extends section 21 and is gradually reduced along airflow direction, length is controlled in leaf chord length
0.1%-10%, the interval of sawtooth 22 are evenly distributed on blade trailing edge and extend on section, and 22 length of sawtooth is controlled in leaf chord length
10%-30%, blade trailing edge extends between section 21 and sawtooth 22 to be connected by opening ferrule type, and blade trailing edge extends section 21 along gas
The tail end in stream direction is provided with opening cutting ferrule, and described 22 one end of sawtooth is provided with connecting shaft 23, and sawtooth 22 is whole by shaft 23
Section 21 can be extended relative to blade trailing edge and do corresponding deflection adjusting with the speed and angle of air-flow, existing noise reduction skill can be solved
The problem of art is to the change bad response of trailing edge airflow direction.
The above-mentioned extension broached-tooth design of the present embodiment can be produced by modes such as injection molded or 3D printings, so
After be attached to existing blade of wind-driven generator and open up on the corresponding rear section in the position 50%-96% or in wind-driven generator
On the rear section of blade whole, to reach the mesh for promoting blade of wind-driven generator efficiency and reducing blade of wind-driven generator noise
, there is actual promotional value, be worthy to be popularized.
Embodiment described above is only the preferred embodiment of the utility model, not limits the utility model with this
Practical range, therefore all shapes according to the utility model, change made by principle, it should all cover in the protection scope of the utility model
It is interior.
Claims (2)
1. a kind of noise reduction trailing edge formations of blade of wind-driven generator, it is characterised in that: the trailing edge formations have it is multiple toward open up to
The periodical recess that direction extends, form are to extend sawtooth, which is attached to blade of wind-driven generator and opens up to 50%-
On the corresponding rear section in 96% position or on the rear section of blade of wind-driven generator whole, by the leaf as extended segment
Piece trailing edge extends section and sawtooth two parts composition, the blade trailing edge extend section by way of stickup attachment in blade tail
On edge, the blade trailing edge extends section and the shape of blade trailing edge joint place is consistent with blade trailing edge shape, and described
Blade trailing edge extends section and is gradually reduced along airflow direction, and length controls the 0.1%-10% in leaf chord length, between the sawtooth
Extend on section every being evenly distributed on blade trailing edge, the sawtooth length controls the 10%-30% in leaf chord length, and the sawtooth is whole
Body can extend section relative to fixed blade trailing edge and do corresponding deflection adjusting with the speed and angle of air-flow.
2. a kind of noise reduction trailing edge formations of blade of wind-driven generator according to claim 1, it is characterised in that: the blade
Trailing edge extends between section and sawtooth to be connected by opening ferrule type, and the blade trailing edge extends section and is arranged along the tail end of airflow direction
There is opening cutting ferrule, described sawtooth one end is provided with connecting shaft, and sawtooth can extend section with gas relative to blade trailing edge by shaft
The speed and angle of stream are done corresponding deflection and are adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821587860.XU CN209261727U (en) | 2018-09-28 | 2018-09-28 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821587860.XU CN209261727U (en) | 2018-09-28 | 2018-09-28 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261727U true CN209261727U (en) | 2019-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821587860.XU Active CN209261727U (en) | 2018-09-28 | 2018-09-28 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
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| CN (1) | CN209261727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139358A (en) * | 2018-09-28 | 2019-01-04 | 明阳智慧能源集团股份公司 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
-
2018
- 2018-09-28 CN CN201821587860.XU patent/CN209261727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139358A (en) * | 2018-09-28 | 2019-01-04 | 明阳智慧能源集团股份公司 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201224 Address after: No.2, Luohu West Road, Houpu village committee, Jieshi Town, Lufeng City, Shanwei City, Guangdong Province Patentee after: Shanwei Mingyang New Energy Technology Co.,Ltd. Address before: 528437 No. 22 Torch Road, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: MING YANG SMART ENERGY GROUP Co.,Ltd. |