CN203835642U - Wind turbine blade - Google Patents
Wind turbine blade Download PDFInfo
- Publication number
- CN203835642U CN203835642U CN201420270505.5U CN201420270505U CN203835642U CN 203835642 U CN203835642 U CN 203835642U CN 201420270505 U CN201420270505 U CN 201420270505U CN 203835642 U CN203835642 U CN 203835642U
- Authority
- CN
- China
- Prior art keywords
- blade
- wind turbine
- turbine blade
- modification region
- pressure side
- Prior art date
- 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
Links
Classifications
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- Y02E10/722—
Landscapes
- Wind Motors (AREA)
Abstract
The utility model relates to a wind turbine blade, having an aerodynamic profile which includes a front edge, a rear edge and an indraft side and a pressure side between the front edge and the rear edge, and is characterized in that the pressure side includes a correcting area shaped for reducing a negative lift coefficient, the correcting area is positioned between two parts corresponding to wing chord positions, and the correcting area is arranged along one part of the blade and is achieved through attaching a stall strip to the blade. According to the wind turbine blade, operational performance of the blade of the wind power generation device is improved, and a load with the direction varying with time is prevented from being applied to the blade.
Description
Technical field
the utility model relates to this kind ofly makes the tired and minimized wind turbine blade of Extreme Load Distributions, more specifically, relates to and a kind ofly in blade, across part, makes fatigue and the minimized wind turbine blade of Extreme Load Distributions.
Background technique
when turbulent flow relates to wind speed, increase, blade pitch increases, thereby reduce the angle of attack, reduces aerodynamic load.Wind speed is conventionally being followed wind speed after increasing and is being reduced, and it needs lower propeller pitch angle and the larger angle of attack to produce identical torque.In this process, may there is the external lateral portion of blade, within the very short time, from positive incidence, change the negative angle of attack into, or in contrast, from the angle of load, this process has applied along with the time changes nyctitropic load to blade.
Model utility content
the utility model aims to provide the scheme addressing these problems.Therefore, a kind of wind turbine blade is provided, have air mechanics contour, described air mechanics contour has suction side between leading edge, trailing edge and frontier and rear and on the pressure side, and be shaped for reducing the modification region of negative lift coefficient described on the pressure side comprising,
described modification region is between the two-part corresponding to chord locations, and described modification region is along the part setting of blade, and described modification region is by being attached to a stall band on blade and completing.
further, the cross section of described stall band is rectangle, triangle, semicircle or quadrant shape.
feature and advantage of the present utility model will be understood in the detailed description below in conjunction with accompanying drawing.
Accompanying drawing explanation
fig. 1 is according to the schematic diagram of wind turbine blade profile of the present utility model.
Embodiment
below by drawings and Examples, the technical solution of the utility model is described in further detail.
fig. 1 has shown wind turbine blade of the present utility model, there is air mechanics contour, described air mechanics contour has suction side between leading edge 1, trailing edge 2 and leading edge 1 and trailing edge 2 and on the pressure side 3,4, it is characterized in that, describedly on the pressure side 4 comprise and being shaped for reducing the modification region 5 of negative lift coefficient,
described modification region 5 is between the two-part corresponding to chord locations, and described modification region 5 is along the part setting of blade, and described modification region 5 is by being attached to a stall band 6 on blade and completing; The cross section of described stall band 6 is rectangle, triangle, semicircle or quadrant shape.
above-described embodiment is not limited to the utility model, and every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
Claims (2)
1. a wind turbine blade, there is air mechanics contour, described air mechanics contour has suction side between leading edge, trailing edge and frontier and rear and on the pressure side, it is characterized in that, be shaped for reducing the modification region of negative lift coefficient described on the pressure side comprising, described modification region is between the two-part corresponding to chord locations, and described modification region is along the part setting of blade, and described modification region is by being attached to a stall band on blade and completing.
2. wind turbine blade according to claim 1, is characterized in that, the cross section of described stall band is rectangle, triangle, semicircle or quadrant shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270505.5U CN203835642U (en) | 2014-05-24 | 2014-05-24 | Wind turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270505.5U CN203835642U (en) | 2014-05-24 | 2014-05-24 | Wind turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835642U true CN203835642U (en) | 2014-09-17 |
Family
ID=51513491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270505.5U Expired - Fee Related CN203835642U (en) | 2014-05-24 | 2014-05-24 | Wind turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835642U (en) |
-
2014
- 2014-05-24 CN CN201420270505.5U patent/CN203835642U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |