CN109139358A - 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
- Publication number
- CN109139358A CN109139358A CN201811136922.XA CN201811136922A CN109139358A CN 109139358 A CN109139358 A CN 109139358A CN 201811136922 A CN201811136922 A CN 201811136922A CN 109139358 A CN109139358 A CN 109139358A
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- blade
- trailing edge
- section
- sawtooth
- wind
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 11
- 238000005755 formation reaction Methods 0.000 title claims abstract description 11
- 238000002789 length control Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/10—Geometry two-dimensional
- F05B2250/18—Geometry two-dimensional patterned
- F05B2250/182—Geometry two-dimensional patterned crenellated, notched
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention 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 present invention 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 present invention relates to the technical field of renewable new energy wind electricity blade, a kind of blade of wind-driven generator is referred in particular to
Noise reduction trailing edge formations.
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.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and blade of wind-driven generator can effectively be promoted by proposing one kind
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 present invention are as follows: noise reduction rear of blade of wind-driven generator
Structure, the periodical recess that there are the trailing edge formations multiple past spanwise directions to extend, form are to extend sawtooth, extension saw
Tooth is attached to blade of wind-driven generator and opens up on the corresponding rear section in the position 50%-96% or complete in blade of wind-driven generator
On the rear section in portion, section is extended by the blade trailing edge as extended segment and sawtooth two parts form, the blade trailing edge extends
For attachment on blade trailing edge, the blade trailing edge extends the shape of section with blade trailing edge joint place to section by way of stickup
It is consistent with blade trailing edge shape, and the blade trailing edge extends section and is gradually reduced along airflow direction, length control exists
The 0.1%-10% of leaf chord length, the zigzag intervals are evenly distributed on blade trailing edge and extend on section, the sawtooth length control
In the 10%-30% of leaf chord length, the sawtooth can integrally extend section with the speed of air-flow relative to fixed blade trailing edge
Corresponding deflection is done with angle to adjust.
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.
Compared with prior art, the present invention have the following advantages that with the utility model has the advantages that
1, the present invention in blade of wind-driven generator by opening up on the corresponding rear section in the position 50%-96% or in wind
It is attached on the rear section of power generator blade whole and extends sawtooth, can effectively promote the lift resistance ratio of blade or improve the sky of blade
Aerodynamics characteristic, to optimize the energy output of wind power generator rotor.
2, the present invention changes the air flow condition of blade of wind-driven generator rear by extending sawtooth, so that wind-force be effectively reduced
The rear noise of generator blade, and sawtooth extends section relative to fixed blade trailing edge and does phase with the speed and angle of air-flow
The deflection answered is adjusted, and 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 present invention is further explained in the light of specific embodiments.
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 embodiments of the invention, and implementation model of the invention is not limited with this
It encloses, therefore all shapes according to the present invention, changes made by principle, should all be included within the scope of protection of the present invention.
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 |
|---|---|---|---|
| CN201811136922.XA CN109139358A (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 |
|---|---|---|---|
| CN201811136922.XA CN109139358A (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 |
|---|---|
| CN109139358A true CN109139358A (en) | 2019-01-04 |
Family
ID=64812943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811136922.XA Pending CN109139358A (en) | 2018-09-28 | 2018-09-28 | A kind of noise reduction trailing edge formations of blade of wind-driven generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN109139358A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242494A (en) * | 2019-07-25 | 2019-09-17 | 无锡风电设计研究院有限公司 | A kind of movable sawtooth trailing edge structures of wind energy conversion system with wing flap function |
| CN113982819A (en) * | 2020-07-27 | 2022-01-28 | 乌本产权有限公司 | Rotor blade for a wind turbine and associated wind turbine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088665A (en) * | 1989-10-31 | 1992-02-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Serrated trailing edges for improving lift and drag characteristics of lifting surfaces |
| US20030099546A1 (en) * | 2001-11-26 | 2003-05-29 | Henrik Stiesdal | Method for improvement of the efficiency of a wind turbine rotor |
| US20090074585A1 (en) * | 2007-09-19 | 2009-03-19 | General Electric Company | Wind turbine blades with trailing edge serrations |
| DE102013204637A1 (en) * | 2013-03-15 | 2014-09-18 | Wobben Properties Gmbh | Wind turbine |
| CN105992870A (en) * | 2013-12-20 | 2016-10-05 | Lm Wp 专利控股有限公司 | A wind turbine blade having deployable aerodynamic devices |
| EP3147498A1 (en) * | 2015-09-25 | 2017-03-29 | Senvion GmbH | Rotor blade, wind turbine, method for manufacturing a rotor blade and for establishing a wind turbine |
| CN209261727U (en) * | 2018-09-28 | 2019-08-16 | 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 CN201811136922.XA patent/CN109139358A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5088665A (en) * | 1989-10-31 | 1992-02-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Serrated trailing edges for improving lift and drag characteristics of lifting surfaces |
| US20030099546A1 (en) * | 2001-11-26 | 2003-05-29 | Henrik Stiesdal | Method for improvement of the efficiency of a wind turbine rotor |
| US20090074585A1 (en) * | 2007-09-19 | 2009-03-19 | General Electric Company | Wind turbine blades with trailing edge serrations |
| DE102013204637A1 (en) * | 2013-03-15 | 2014-09-18 | Wobben Properties Gmbh | Wind turbine |
| CN105992870A (en) * | 2013-12-20 | 2016-10-05 | Lm Wp 专利控股有限公司 | A wind turbine blade having deployable aerodynamic devices |
| EP3147498A1 (en) * | 2015-09-25 | 2017-03-29 | Senvion GmbH | Rotor blade, wind turbine, method for manufacturing a rotor blade and for establishing a wind turbine |
| CN209261727U (en) * | 2018-09-28 | 2019-08-16 | 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 |
Non-Patent Citations (1)
| Title |
|---|
| 李景煜: "《骨科实用框架固定学》", 辽宁科学技术出版社, pages: 0407 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242494A (en) * | 2019-07-25 | 2019-09-17 | 无锡风电设计研究院有限公司 | A kind of movable sawtooth trailing edge structures of wind energy conversion system with wing flap function |
| CN113982819A (en) * | 2020-07-27 | 2022-01-28 | 乌本产权有限公司 | Rotor blade for a wind turbine and associated wind turbine |
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| PB01 | Publication | ||
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Application publication date: 20190104 |