CN201437756U - Noise reduction leaf blade of wind power generator - Google Patents
Noise reduction leaf blade of wind power generator Download PDFInfo
- Publication number
- CN201437756U CN201437756U CN2009201205569U CN200920120556U CN201437756U CN 201437756 U CN201437756 U CN 201437756U CN 2009201205569 U CN2009201205569 U CN 2009201205569U CN 200920120556 U CN200920120556 U CN 200920120556U CN 201437756 U CN201437756 U CN 201437756U
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- China
- Prior art keywords
- blade
- leaf blade
- noise reduction
- wind
- arc
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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.)
- Expired - Fee Related
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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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Abstract
The utility model relates to a noise reduction leaf blade of a wind power generator, which is provided with a windward side and a leeward side. The noise reduction leaf blade is characterized in that arc-shaped bulges which are distributed along the width direction of the leaf blade are arranged at the end part of the leeward side of the leaf blade. The arc-shaped bulges can also be arranged at the end part of the windward side at the same time. Moreover, the plurality of arc-shaped bulges are respectively and sequentially distributed from the end part of the leaf blade to the root part side of the leaf blade in spaced and parallel manners. Compared with the prior art, the structural intensity of the leaf blade is enhanced due to the arc-shaped bulges are arranged at the end part of the leaf blade; in addition, with the help of the arc-shaped bulges, a zone at the end part of the leaf blade can be damaged in the rotating process of the leaf blade to form a large vortex; meanwhile, acting forces of the windward side and the leeward side of the leaf blade are balanced, the axial vibrating frequency of the leaf blade is lowered, and therefore the noise of the rotor leaf blade can be effectively lowered.
Description
Technical field
The utility model relates to a kind of blade, specifically refers to a kind of rotor blade that has decrease of noise functions on the wind-driven generator that is applied in.
Background technique
The noise of wind-driven generator is mainly derived from mechanicalness noise and aerodynamic noise, wherein aerodynamic noise is mainly produced by rotor blade again, it is blade cutting rubbing air in rotary course, because blade tip is far away from the axle center, therefore form elastic vibration easily, the end has bigger eddy current to form in addition, thereby causes blade tip to do the axial high speed vibration and make a noise.For this reason, people design different rotor blades, as the Chinese patent publication number is CN1936320A " wind turbine with the blade rotor that reduces noise ", disclosed the scheme that flexible bristle assembly is set in this wind turbine on blade, the edge that this flexibility bristle assembly alignment is lined up at least one row and protruded out hangover, utilize this flexibility bristle, make on the air-flow direction, the pressure surge of the profile both sides of each blade reaches balance, the noise that is produced when reducing blade and wind facies mutual effect with this.
The another kind of noise reduction scheme of blade is disclosed in another patent documentation, as the Chinese patent publication number is CN1732340A " with the rotor blade of a wind power plant ", this blade in its end along the trailing edge direction of rotor blade in rotor blade plane inner bending or skew, the trailing edge that makes the rotor blade end like this is to backward shift, make the air-flow time-delay ground on the rotor blade trailing edge separate with the perimeter, reduce the vortes interference that air-flow and rotor blade trailing edge produce when separated from one another, thereby also reduced noise by its generation.
The model utility content
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, a kind of novel structure is provided and has the wind-driven generator noise reduction blade of decrease of noise functions equally.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this wind-driven generator noise reduction blade has wind-receiving face and lee face, it is characterized in that: the lee face end of described blade is provided with the arc convex that distributes along the width direction of blade.
As further improvement of the utility model, the wind-receiving face end of described blade also is provided with arc convex, to be useful in the bigger occasion of wind speed.
In such scheme, arc convex can be one; Also can be according to the size of local wind speed, above-mentioned arc convex is designed to a plurality of, at this moment, these a plurality of arc convex distribute to the root side spaced and parallel of blade from the end of blade respectively successively, so that eliminate the noise that blade produces better.
Described arc convex is best and blade is perpendicular.
Described projection can be injection molded into integral piece with blade, makes that the mould manufacturing is simpler.
Compared with prior art, because end of the present utility model is provided with arc convex, therefore this structure has not only improved the intensity of blade, and in the blade rotary course, by means of this arc convex, can destroy blade tip zone and form than maelstrom, simultaneously also balance the active force of blade wind-receiving face and lee face, reduce the axial vibration frequency of blade, thereby can reduce the noise that rotor blade sends effectively.
Description of drawings
Fig. 1 is the utility model first embodiment's a perspective view;
Fig. 2 is the end elevation view of Fig. 1;
Fig. 3 is the side view of Fig. 2;
Fig. 4 be among Fig. 3 A-A to sectional drawing;
Fig. 5 is the utility model second embodiment's a perspective view;
Fig. 6 is the utility model the 3rd embodiment's a perspective view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment 3, and as shown in Figure 6, itself and above-mentioned first embodiment's difference are: wind-receiving face 12 ends at blade also are provided with arc convex 2, to be useful in the very big occasion of rotor speed.Here, the arc convex 2 on the wind-receiving face 12 also is three, and is identical among their structure and above-mentioned first embodiment, is not repeated at this.
Claims (5)
1. wind-driven generator noise reduction blade, this blade has wind-receiving face and lee face, it is characterized in that: the lee face end of described blade is provided with the arc convex that distributes along the width direction of blade.
2. wind-driven generator noise reduction blade according to claim 1 is characterized in that: the wind-receiving face end of described blade also is provided with described arc convex.
3. wind-driven generator noise reduction blade according to claim 1 and 2, it is characterized in that: described arc convex has a plurality of, and difference distributes to the root side spaced and parallel of blade from the end of blade successively.
4. wind-driven generator noise reduction blade according to claim 1 and 2, it is characterized in that: described arc convex and blade are perpendicular.
5. wind-driven generator noise reduction blade according to claim 1 and 2 is characterized in that: described projection and blade injection moulding and form integral piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205569U CN201437756U (en) | 2009-05-20 | 2009-05-20 | Noise reduction leaf blade of wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201205569U CN201437756U (en) | 2009-05-20 | 2009-05-20 | Noise reduction leaf blade of wind power generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437756U true CN201437756U (en) | 2010-04-14 |
Family
ID=42399730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201205569U Expired - Fee Related CN201437756U (en) | 2009-05-20 | 2009-05-20 | Noise reduction leaf blade of wind power generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201437756U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966487A (en) * | 2012-11-28 | 2013-03-13 | 苏州源源机械设备有限公司 | Noise-reduction fan blade for horizontal-shaft wind driven generator |
| CN107923369A (en) * | 2015-07-31 | 2018-04-17 | 乌本产权有限公司 | Wind energy facility rotor blade |
| CN111894817A (en) * | 2020-08-11 | 2020-11-06 | 石家庄铁道大学 | Vortex generator |
| CN111927707A (en) * | 2020-08-10 | 2020-11-13 | 王顺朝 | Wind driven generator blade |
-
2009
- 2009-05-20 CN CN2009201205569U patent/CN201437756U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966487A (en) * | 2012-11-28 | 2013-03-13 | 苏州源源机械设备有限公司 | Noise-reduction fan blade for horizontal-shaft wind driven generator |
| CN107923369A (en) * | 2015-07-31 | 2018-04-17 | 乌本产权有限公司 | Wind energy facility rotor blade |
| CN107923369B (en) * | 2015-07-31 | 2019-11-19 | 乌本产权有限公司 | Wind energy facility rotor blade |
| US10655608B2 (en) | 2015-07-31 | 2020-05-19 | Wobben Properties Gmbh | Wind turbine rotor blade |
| CN111927707A (en) * | 2020-08-10 | 2020-11-13 | 王顺朝 | Wind driven generator blade |
| CN111927707B (en) * | 2020-08-10 | 2021-09-07 | 山东国创精密机械有限公司 | Wind driven generator blade |
| CN111894817A (en) * | 2020-08-11 | 2020-11-06 | 石家庄铁道大学 | Vortex generator |
| CN111894817B (en) * | 2020-08-11 | 2021-10-26 | 石家庄铁道大学 | Vortex generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20140520 |