CN101865075A - Method for shaping front edge of megawatt wind-power blade - Google Patents
Method for shaping front edge of megawatt wind-power blade Download PDFInfo
- Publication number
- CN101865075A CN101865075A CN200910049235A CN200910049235A CN101865075A CN 101865075 A CN101865075 A CN 101865075A CN 200910049235 A CN200910049235 A CN 200910049235A CN 200910049235 A CN200910049235 A CN 200910049235A CN 101865075 A CN101865075 A CN 101865075A
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- China
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- blade
- front edge
- adhesive
- megawatt wind
- clamp
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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
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Wind Motors (AREA)
Abstract
The invention relates to a method for shaping a front edge of a megawatt wind-power blade. The method is implemented by the following steps of: starting from the blade root end, by using CAD software, taking a section with a certain length till the blade tip, and making a clamping plate in a ratio of 1:1 according to the section on the front edge vertical to the axial direction of the blade at the fixed interval; for the blade which is demolded, starting from the root end, scraping an adhesive (called a clamping point) on the front edge of the blade at the fixed interval, laying demolding cloth, clamping the bottom by using the front edge clamping plate along the vertical direction of the blade, flattening the bottom, curing the bottom, grinding the roughness of the surface until the bottom is grinded on the same line; coating the adhesive in an area between two bottoms, scraping the adhesive by using an angle iron which is longer than the distance of adjacent clamping points along the radian of the bottom, curing, and grinding the adhesive to roughness; and filling up the front edge which is primarily trimmed by using coarse putty. The method for shaping the front edge of the megawatt wind-power blade has the advantages that: the repaired front edge of the blade is consistent with standard blade shape and has good pneumatic performance.
Description
Technical field
The present invention relates to wind electricity blade and make the field, relate in particular to a kind of method of shaping front edge of megawatt wind-power blade.
Background technique
Blade is one of wind-powered electricity generation unit critical component, and its performance quality directly influences the wind energy efficiency and the suffered load of unit of wind-powered electricity generation unit, has determined the overall performance of unit and the Economy of wind-powered electricity generation development and use to a great extent.Simultaneously, blade also is the core component of blower fan, and its cost is about 23% of wind-powered electricity generation unit overall cost.
The blade aeroperformance directly determines the generating efficiency of blower fan.
The designing technique of vane foil of the prior art adopts the aviation aerofoil profile of NACA series usually, such as NACA44XX, and NA-CA23XX, NA63XX and NASA LS (1) etc.These aerofoil profiles are had relatively high expectations to blade inlet edge, and the shape of leading edge is most important to the blade aeroperformance, the zone of especially close blade tip.Because during blade forming, matched moulds seam thickness instability adds the influence of leading edge bound edge, die deformation, all can make blade inlet edge produce distortion.How to provide a kind of easily, to come the method for correction of the flank shape megawatt wind-power blade leading edge be the problem that the technician will solve to lower cost.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of method of shaping front edge of megawatt wind-power blade, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention realizes by following steps:
With CAD software from blade root, leading edge every fixed range along perpendicular to sharf to the cross section of getting certain-length up to blade tip, make 1: 1 clamp according to the cross section;
The blade that will take off from mould is from butt, on doing, scrapes blade inlet edge adhesive (being called stuck point) every fixed range, put release cloth again, then with the leading edge clamp at the bottom of the blade Vertical direction card, the end, wipeed off, after treating its curing, surface finish is coarse, and the end, polish on a line;
Adhesive is coated in zone between at the bottom of per two, scrapes adhesive with the angle bar of being longer than adjacent stuck point distance along the radian at the end, solidifies back polishing adhesive to coarse;
Mend flat leading edge of tentatively repairing with thick putty.
Compared with prior art, the invention has the beneficial effects as follows: the blade inlet edge after the reparation is leaf consistent with standard, and good aeroperformance is arranged.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail:
The present invention realizes by following steps:
1, with CAD software from blade root, leading edge every fixed range along perpendicular to sharf to the cross section of getting certain-length up to blade tip, make 1: 1 clamp according to the cross section;
2, the blade that will take off from mould is from butt, on doing, scrapes blade inlet edge adhesive (being called stuck point) every 0.5～1m, put release cloth again, then with the leading edge clamp at the bottom of the blade Vertical direction card, the end, wipeed off, after treating its curing, surface finish is coarse, and the end, polish on a line;
3, adhesive is coated in the zone between at the bottom of per two, scrapes adhesive with the angle bar that 0.5～1m is long along the radian at the end, solidifies back polishing adhesive to coarse;
4, mend flat leading edge of tentatively repairing with thick putty;
In step 1: fixed range is 0.4-0.6m; Cross-sectional length is 15～20cm;
The material of the clamp in step 1 is an aluminum alloy;
Adhesive in step 2 is and the similar epoxy adhesive of blade infusion epoxy resin composition;
Thick putty in step 4 is for there being the material of excellent adhesion with blade surface.
The present invention use CAD software with blade from 20.25m to the blade tip, intercept a blade profile figure with sharf to vertical direction every half meter edge, with the matched moulds seam is mid point, gets the arc that the sectional view leading edge is about 30～40cm, makes 1: 1 clamp again by arc with aluminum alloy;
Blade inlet edge flange after demoulding cutting is removed, use the resin with the close component of blade to soak into twin shaft, paste 2 layers of cloth that 20cm is wide over to the blade tip zone, spread release cloth at leading edge R5.0 to cloth.After treating resin solidification, release cloth is torn, with concavo-convex and coarse, the conformal of lighted region polishing.From 20.25m, on blade inlet edge, make marks up to blade tip every half meter.On mark is done, scrape the adhesive (being called the end) with the close component of blade, put release cloth again; Then with the described clamp of step 1 along sharf at the bottom of the Vertical direction card: clamp is stuck on the blade, the end, spread to consistent with the shape of clamp, after treating its curing, surface finish is coarse, by instruments such as square tubes the end, polished on a line, check the shape at the end during polishing with clamp frequently, guarantee the accurate of the end; To note distinguishing PS face and SS face when using clamp, can not take anti-;
Zone between each end is cleaned out, and adhesive is pulled in the zone between at the bottom of per two, the end of on, scrapes adhesive along the radian at the end with the two ends frame of half meter long angle bar, solidifies back polishing adhesive to coarse, conformal;
Leading edge after will tentatively repairing with thick putty is again further wipeed off, and the polishing of dry back makes that leading edge is level and smooth, no concave-convex.
Embodiment
(1) use CAD software with blade from 20.25m to the blade tip, intercept a blade profile figure with sharf to vertical direction every half meter edge, with the matched moulds seam is mid point, 20.25m to 27.75m, the arc of the long 40cm of sectioned figure leading edge, 28.25m to 39.25m, the arc of the long 35cm of sectioned figure leading edge, 39.75m locate, the arc of intercepting 30cm, the length of all arcs is all divided equally with assembly line.Make 1: 1 clamp with aluminum alloy by arc again, PS face, the SS face of clamp will have differentiation;
(2) cutting of the blade inlet edge flange after the demoulding is removed, stick with paste epoxy resin with hand and soak into twin shaft, paste 2 layers of cloth that 20cm is wide over to the blade tip zone, spread release cloth at leading edge R5.0 to glass cloth.After treating resin solidification, release cloth is torn, with concavo-convex and coarse, the conformal of lighted region polishing.From 20.25m, on blade inlet edge, make marks up to blade tip every half meter.On mark is done, scrape epoxy adhesive, put release cloth again; Then with the described clamp of step 1 along sharf at the bottom of the Vertical direction card: clamp is stuck on the blade, the end, spread to consistent with the shape of clamp, after treating its curing, surface finish is coarse, by instruments such as square tubes the end, polished on a line, check the shape at the end during polishing with clamp frequently, guarantee the accurate of the end; To note distinguishing PS face and SS face when using clamp, can not take anti-;
Zone between each end is cleaned out, and epoxy adhesive is pulled in the zone between at the bottom of per two, the end of on, scrapes adhesive along the radian at the end with the two ends frame of half meter long angle bar, solidifies back polishing adhesive to coarse, conformal;
Leading edge after will tentatively repairing with the thick putty of polyurethane is again further wipeed off, and the polishing of dry back makes that leading edge is level and smooth, no concave-convex.
Claims (5)
1. the method for a shaping front edge of megawatt wind-power blade, realize by following steps:
(1), with CAD software from blade root, leading edge every fixed range along perpendicular to sharf to the cross section of getting certain-length up to blade tip, make 1: 1 clamp according to the cross section;
(2), the blade that will take off from mould is from butt, scrapes adhesive every 0.5～1m on blade inlet edge is done, and puts release cloth again, then with the leading edge clamp at the bottom of the blade Vertical direction card, the end, wipeed off, treat that it solidifies after, surface finish is coarse, and the end, polish on a line;
(3), the zone between at the bottom of per two coats adhesive, scrapes adhesive with the angle bar that 0.5～1m is long along the radian at the end, solidifies back polishing adhesive to coarse;
(4), mend flat leading edge of tentatively repairing with thick putty.
2. the method for shaping front edge of megawatt wind-power blade according to claim 1, wherein in step (1): fixed range is 0.4-0.6m; Cross-sectional length is 15～20cm.
3. the method for shaping front edge of megawatt wind-power blade according to claim 1, wherein in step (1): the material of clamp is an aluminum alloy.
4. the method for shaping front edge of megawatt wind-power blade according to claim 1, wherein in step (2): adhesive is and the similar epoxy adhesive of blade infusion epoxy resin composition.
5. the method for shaping front edge of megawatt wind-power blade according to claim 1, wherein in step (4): thick putty is for there being the material of excellent adhesion with blade surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100492359A CN101865075B (en) | 2009-04-14 | 2009-04-14 | Method for shaping front edge of megawatt wind-power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100492359A CN101865075B (en) | 2009-04-14 | 2009-04-14 | Method for shaping front edge of megawatt wind-power blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865075A true CN101865075A (en) | 2010-10-20 |
| CN101865075B CN101865075B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100492359A Active CN101865075B (en) | 2009-04-14 | 2009-04-14 | Method for shaping front edge of megawatt wind-power blade |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705155A (en) * | 2011-03-08 | 2012-10-03 | 通用电气公司 | Method for repairing a wind turbine blade |
| CN103821672A (en) * | 2012-11-16 | 2014-05-28 | 歌美飒创新技术公司 | System and method for reinforcing weakened area of wind turbine blade |
| CN107718607A (en) * | 2017-11-09 | 2018-02-23 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade blade tip restorative procedure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1417409T4 (en) * | 2001-07-19 | 2017-07-31 | Vestas Wind Sys As | Wind turbine blades |
| CN201050442Y (en) * | 2007-06-05 | 2008-04-23 | 江苏新誉风力发电设备有限公司 | Megawatt grade wind mill vane |
| CN101397972A (en) * | 2007-09-27 | 2009-04-01 | 贵阳多元佳华工贸有限公司 | Method for producing honeycomb blade of wind generator |
| CN101387263B (en) * | 2008-10-24 | 2010-12-08 | 常州伯龙三维复合材料有限公司 | Wind mill blade prepared by spacing structure weaving process and method thereof |
-
2009
- 2009-04-14 CN CN2009100492359A patent/CN101865075B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705155A (en) * | 2011-03-08 | 2012-10-03 | 通用电气公司 | Method for repairing a wind turbine blade |
| CN102705155B (en) * | 2011-03-08 | 2013-10-30 | 通用电气公司 | Method for repairing wind turbine blade |
| CN103821672A (en) * | 2012-11-16 | 2014-05-28 | 歌美飒创新技术公司 | System and method for reinforcing weakened area of wind turbine blade |
| CN103821672B (en) * | 2012-11-16 | 2018-02-27 | 歌美飒创新技术公司 | System and method for strengthening wind turbine blade weakened zones |
| CN107718607A (en) * | 2017-11-09 | 2018-02-23 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade blade tip restorative procedure |
| CN107718607B (en) * | 2017-11-09 | 2024-03-29 | 国能联合动力技术(连云港)有限公司 | Fan blade tip repairing method |
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| Publication number | Publication date |
|---|---|
| CN101865075B (en) | 2012-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI AIGANG WIND POWER TECHNOLOGY DEVELOPMENT Effective date: 20150817 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150817 Address after: 201300 No. 1989 Huang Lu highway, Nanhui Industrial Park, Nanhui District, Shanghai Patentee after: Shanghai Aeolon Wind Energy Technology Development Co., Ltd. Patentee after: SHANGHAI AIGANG WIND POWER TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 201300 No. 1989 Huang Lu highway, Nanhui Industrial Park, Nanhui District, Shanghai Patentee before: Shanghai Aeolon Wind Energy Technology Development Co., Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201300 No. 1989 Huang Lu highway, Nanhui Industrial Park, Nanhui District, Shanghai Patentee after: Shanghai Ai Feng wind technology development (Group) Co., Ltd. Patentee after: SHANGHAI AIGANG WIND POWER TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 201300 No. 1989 Huang Lu highway, Nanhui Industrial Park, Nanhui District, Shanghai Patentee before: Shanghai Aeolon Wind Energy Technology Development Co., Ltd. Patentee before: SHANGHAI AIGANG WIND POWER TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201306 Building 1, 1318 Miaoxiang Road, Lingang New District, Pudong New Area, Shanghai Patentee after: Ailang Technology Co.,Ltd. Patentee after: SHANGHAI AIGANG WIND ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 201300 No. 1989 Huang Lu highway, Nanhui Industrial Park, Nanhui District, Shanghai Patentee before: SHANGHAI AEOLON WIND ENERGY TECHNOLOGY DEVELOPMENT (Group) Co.,Ltd. Patentee before: SHANGHAI AIGANG WIND ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |