CN103147930A - Big trailing edge structure for wind turbine blades - Google Patents
Big trailing edge structure for wind turbine blades Download PDFInfo
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- CN103147930A CN103147930A CN201110401175XA CN201110401175A CN103147930A CN 103147930 A CN103147930 A CN 103147930A CN 201110401175X A CN201110401175X A CN 201110401175XA CN 201110401175 A CN201110401175 A CN 201110401175A CN 103147930 A CN103147930 A CN 103147930A
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- trailing edge
- blade
- edge structure
- supporting structure
- fan blade
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a big trailing edge structure for wind turbine blades. The conventional blade trailing edge is mainly spliced directly by a pressure surface and a suction surface. As the length of the blade increases, a cross-sectional area of the blade needs to be increased in order to enable a radial direction inside the blade to have enough stiffness. In the prior art, the thickness of a material ply at the trailing edge of the blade is usually increased to raise the stiffness of the blade. However, in this manner, the trailing edge costs lots of materials and a large amount of glue spread, which can increase the weight of the blade, and a vacuum-introduction perfusion has bad quality, low manufacturability and worse effects. The invention provides a big trailing edge structure for the wind turbine blades. A blade trailing edge supporting structure is added to a trailing edge joint of the pressure surface and the suction surface of the blade to form the big trailing edge structure for the blade. The cross section area of the blade is increased by changing the aerofoil trailing edge structure, with no need of raising the thickness of the material play, thereby improving antifatigue property of the blade trailing edge, achieving larger blade stiffness, and raising manufacturability and product effects.
Description
Technical field:
The present invention relates to a kind of trailing edge structure of wind generator set blade.
Technical background:
Along with the continuous increase of wind-powered electricity generation unit wind wheel, the pneumatic design of blade, structural design, technological design are being constantly brought forth new ideas and are being developed.
Existing trailing edge is mainly formed by pressure side and suction surface direct splicing, be little trailing edge structural type, along with the increase of length of blade, enough intensity and toughnesses are arranged to satisfy the structural requirement of blade in order to make blade inside radius direction, need constantly to increase the section area of blade.
Prior art is mainly the thickness in trailing edge place's increase material laying, forms large trailing edge structure, increases the area in cross section, blade inside radius place with this, improves blade stiffness.But this kind method trailing edge laying is blocked up, and material requested is many, needs a large amount of gluings, can strengthen leaf weight, and vacuum importing pouring quality is poor, and manufacturability is not high, and effect is relatively poor.
Summary of the invention:
In order to overcome the defective of existing trailing edge structure, the invention provides the large trailing edge structure of a kind of fan blade, the large trailing edge structure of this blade forms the large trailing edge structure of blade in the trailing edge joint increase trailing edge supporting structure of pressure side and the suction surface of blade.
Described trailing edge supporting structure is mainly and supports the PVC foam.
The pressure side outermost surface of described blade is the PVC foam, lays unidirectional cloth (UD) on it, through the vacuum infusion formation that is heating and curing.
The suction surface outermost surface of described blade is the PVC foam, lay unidirectional cloth (UD) on it, re-lay the covering laying, place described trailing edge supporting structure on the covering laying, namely support the PVC foam, be heating and curing through vacuum infusion, blade suction surface and trailing edge supporting structure are formed an integral body.
Described covering laying is mainly twin shaft cloth and three axle cloth.
The large trailing edge structure of described a kind of fan blade, blade pressure surface is connected with the trailing edge supporting structure by adhesive.
The large trailing edge structure of a kind of fan blade of the present invention by changing the airfoil trailing edge structure, need not to increase material laying thickness, can increase the cross sectional area of blade, improve blade at the fatigue resistance at trailing edge place, obtain larger blade stiffness, manufacturability and product effect are improved.
Description of drawings:
Fig. 1 is that fan blade trailing edge structural design changes schematic diagram;
Fig. 2 is the schematic diagram of the large trailing edge structure of a kind of fan blade.
In figure: 1, PVC foam; 2, unidirectional cloth (UD); 3, adhesive; 4, covering laying; 5, support the PVC foam; 6, unidirectional cloth (UD); 7, PVC foam.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is that fan blade trailing edge structural design changes schematic diagram, can find out on scheming, and the increase of trailing edge can improve the rigidity of whole blade profile greatly, keeps better the reliable and stable of trailing edge structure.
Fig. 2 shows the large trailing edge structure of a kind of fan blade, and the large trailing edge structure of this blade forms the large trailing edge structure of blade in the trailing edge joint increase trailing edge supporting structure of pressure side and the suction surface of blade.
Described trailing edge supporting structure is mainly and supports PVC foam (5).
The pressure side outermost surface of described blade is PVC foam (1), lays unidirectional cloth (UD) (2) on it, through the vacuum infusion formation that is heating and curing.
The suction surface outermost surface of described blade is PVC foam (7), lay unidirectional cloth (UD) (6) on it, re-lay covering laying (4), the described trailing edge supporting structure of the upper placement of covering laying (4), namely support PVC foam (5), be heating and curing through vacuum infusion, blade suction surface and trailing edge supporting structure are formed an integral body.
Described covering laying (4) is mainly twin shaft cloth and three axle cloth.
The large trailing edge structure of a kind of fan blade of the present invention, blade pressure surface is connected with the trailing edge supporting structure by adhesive (3).
The large trailing edge structure of a kind of fan blade of the present invention by changing the airfoil trailing edge structure, need not to increase material laying thickness, can increase the cross sectional area of blade, improve blade at the fatigue resistance at trailing edge place, obtain larger blade stiffness, manufacturability and product effect are improved.
Although through the present invention is described in conjunction with specific embodiments, for the skilled personage of the art, according to narration above make to substitute, revise with variation will be apparent.Therefore, substitute such, when modifications and variations fall in the spirit and scope of claim of the present invention, should be included in the present invention.
Claims (6)
1. large trailing edge structure of fan blade is characterized in that: the trailing edge joint at the pressure side of blade and suction surface increases the trailing edge supporting structure, forms the large trailing edge structure of blade.
2. the large trailing edge structure of a kind of fan blade according to claim 1 is characterized in that: described trailing edge supporting structure is mainly and supports the PVC foam.
3. the large trailing edge structure of a kind of fan blade according to claim 1, it is characterized in that: the pressure side outermost surface of described blade is the PVC foam, lays unidirectional cloth (UD) on it, through the vacuum infusion formation that is heating and curing.
4. the large trailing edge structure of a kind of fan blade according to claim 1, it is characterized in that: the suction surface outermost surface of described blade is the PVC foam, lay unidirectional cloth (UD) on it, re-lay the covering laying, place described trailing edge supporting structure on the covering laying, namely support the PVC foam, be heating and curing through vacuum infusion, described blade suction surface and described trailing edge supporting structure are formed an integral body.
5. the large trailing edge structure of a kind of fan blade according to claim 1, it is characterized in that: described blade pressure surface is connected with described trailing edge supporting structure by adhesive.
6. the large trailing edge structure of a kind of fan blade according to claim 4, it is characterized in that: described covering laying is mainly twin shaft cloth and three axle cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110401175XA CN103147930A (en) | 2011-12-06 | 2011-12-06 | Big trailing edge structure for wind turbine blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110401175XA CN103147930A (en) | 2011-12-06 | 2011-12-06 | Big trailing edge structure for wind turbine blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103147930A true CN103147930A (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110401175XA Pending CN103147930A (en) | 2011-12-06 | 2011-12-06 | Big trailing edge structure for wind turbine blades |
Country Status (1)
| Country | Link |
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| CN (1) | CN103147930A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696167A (en) * | 2014-12-24 | 2015-06-10 | 中国科学院工程热物理研究所 | Blunt trailing edge type wind turbine blade as well as implementing device and method thereof |
| WO2018015254A1 (en) * | 2016-07-19 | 2018-01-25 | Lm Wind Power International Technology Ii Aps | Wind turbine blade with flatback root segment and related method |
| EP3396155A1 (en) * | 2017-04-27 | 2018-10-31 | Senvion GmbH | Rotor blade of a wind turbine and method for manufacturing same, termination bridge of a rotor blade and use of same |
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| EP2063106A1 (en) * | 2006-09-15 | 2009-05-27 | Gamesa Innovation & Technology, S.L. | Optimised wind turbine blade |
| CN101454565A (en) * | 2006-05-31 | 2009-06-10 | 歌美飒创新技术公司 | Wind generator blade with divergent trailing edge |
| WO2010000263A2 (en) * | 2008-07-01 | 2010-01-07 | Danmarks Tekniske Universitet | A reinforced blade for a wind turbine |
| CN101749194A (en) * | 2009-12-11 | 2010-06-23 | 重庆通用工业(集团)有限责任公司 | Wind turbine blade for large-scale wind generating set, and molding method thereof |
| WO2010135593A1 (en) * | 2009-05-21 | 2010-11-25 | Knight & Carver Wind Group | Shell structure of wind turbine blade having regions of low shear modulus |
| US20110142661A1 (en) * | 2010-06-08 | 2011-06-16 | General Electric Company | Trailing edge bonding cap for wind turbine rotor blades |
| CN202023688U (en) * | 2011-02-19 | 2011-11-02 | 中国科学院工程热物理研究所 | Wind turbine blade with blunt trailing edge |
| CN202483802U (en) * | 2011-12-06 | 2012-10-10 | 上海电气风电设备有限公司 | A big trailing edge structure for wind turbine blades |
-
2011
- 2011-12-06 CN CN201110401175XA patent/CN103147930A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454565A (en) * | 2006-05-31 | 2009-06-10 | 歌美飒创新技术公司 | Wind generator blade with divergent trailing edge |
| EP2063106A1 (en) * | 2006-09-15 | 2009-05-27 | Gamesa Innovation & Technology, S.L. | Optimised wind turbine blade |
| WO2010000263A2 (en) * | 2008-07-01 | 2010-01-07 | Danmarks Tekniske Universitet | A reinforced blade for a wind turbine |
| WO2010135593A1 (en) * | 2009-05-21 | 2010-11-25 | Knight & Carver Wind Group | Shell structure of wind turbine blade having regions of low shear modulus |
| CN101749194A (en) * | 2009-12-11 | 2010-06-23 | 重庆通用工业(集团)有限责任公司 | Wind turbine blade for large-scale wind generating set, and molding method thereof |
| US20110142661A1 (en) * | 2010-06-08 | 2011-06-16 | General Electric Company | Trailing edge bonding cap for wind turbine rotor blades |
| CN202023688U (en) * | 2011-02-19 | 2011-11-02 | 中国科学院工程热物理研究所 | Wind turbine blade with blunt trailing edge |
| CN202483802U (en) * | 2011-12-06 | 2012-10-10 | 上海电气风电设备有限公司 | A big trailing edge structure for wind turbine blades |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696167A (en) * | 2014-12-24 | 2015-06-10 | 中国科学院工程热物理研究所 | Blunt trailing edge type wind turbine blade as well as implementing device and method thereof |
| CN104696167B (en) * | 2014-12-24 | 2017-06-20 | 中国科学院工程热物理研究所 | A kind of blunt trailing edge wind turbine blade and its implementation and method |
| WO2018015254A1 (en) * | 2016-07-19 | 2018-01-25 | Lm Wind Power International Technology Ii Aps | Wind turbine blade with flatback root segment and related method |
| CN109642538A (en) * | 2016-07-19 | 2019-04-16 | Lm风力发电国际技术有限公司 | Wind turbine blade and correlation technique with flat Dorsal root section |
| US11002247B2 (en) | 2016-07-19 | 2021-05-11 | Lm Wind Power Us Technology Aps | Wind turbine blade with flatback root segment and related method |
| EP3396155A1 (en) * | 2017-04-27 | 2018-10-31 | Senvion GmbH | Rotor blade of a wind turbine and method for manufacturing same, termination bridge of a rotor blade and use of same |
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Application publication date: 20130612 |