CN103419380A - Megawatt large scale wind blade root prefabricating and forming process - Google Patents
Megawatt large scale wind blade root prefabricating and forming process Download PDFInfo
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- CN103419380A CN103419380A CN2013103980793A CN201310398079A CN103419380A CN 103419380 A CN103419380 A CN 103419380A CN 2013103980793 A CN2013103980793 A CN 2013103980793A CN 201310398079 A CN201310398079 A CN 201310398079A CN 103419380 A CN103419380 A CN 103419380A
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Abstract
The invention provides megawatt large scale wind blade root prefabricating and forming process. The process comprises the steps of laying blade root prefabricating part glass fiber cloth on a blade root prefabricating mould, then perfusing in a vacuum mode, heating, curing and forming, and finally moving a cured and formed blade root prefabricated part into a main mould to be integrally formed. In a blade forming process, vacuum pouring thermal curing process is mainly utilized to form a blade root. The megawatt large scale wind blade root prefabricating and forming process can greatly overcome the quality defect that the blade root cannot be poured thoroughly or the blade root turns white and improves blade reliability. Meanwhile, thermal curing can quicken resin to be cured, and the production efficiency of large wind blades is improved.
Description
Technical field
The present invention relates to the manufacturing technology field of wind power generation plant blade, be specifically related to the pre-formed technique of a kind of MW class large-scale wind electricity blade root.
Background technology
Along with exhausting in a large number of non-renewable energy resources, wind-power electricity generation more and more enjoys concern and the attention of countries in the world.Wind-power electricity generation is to utilize wind-force to drive the air vane rotation, then sees through booster engine by the lifting of the speed of rotation, makes the TRT generating.Wind electricity blade is as the core component of unit, and blade technology is one of core technology of wind generator system, and its main holding capacity is blade root, and blade root has material impact to leaf quality, and its performance also directly affects the service life of blade.
Development along with the wind-powered electricity generation industry, wind electricity blade also maximizes increasingly, for the blade root of wind electricity blade, also along with blade becomes large and thickens, after blade root thickens, makes blade root be difficult for perfusion thoroughly or blade root turns white, it directly causes the blade root quality to reduce, and affects blade service life.
Summary of the invention
For above-mentioned weak point of the prior art, the present invention aims to provide the pre-formed technique of a kind of MW class large-scale wind electricity blade root, greatly reduce the cycle of resin perfusion in blade forming, in reduction blade forming process, the risk of mass defect appears in blade root, has improved the quality of large-scale wind electricity blade.
In order to achieve the above object, technical scheme of the present invention: the pre-formed technique of a kind of MW class large-scale wind electricity blade root, described processing step is: first blade root prefabricated component glass-fiber-fabric is laid on the blade root prefabricated-member mould, and then priming by vacuum, the moulding that is heating and curing, finally by the blade root prefabricated component after curing molding, call in main mould one-body molded.
Wherein, described blade root prefabricated-member mould is consistent with the large-scale wind electricity blade profile, and specification is consistent.
Particularly, the step of described priming by vacuum is, lays successively porous release film, release cloth, flow-guiding screen, omega pipe, sealing joint strip on glass-fiber-fabric, at the edge of flow-guiding screen, lays and builds pipe, the vacuum bag film is laid by the superiors, is finally vacuumized, the resin perfusion.
Further, described sealing joint strip is butyl sealant; And it is two, wherein article one is apart from prefabricated-member mould die parting line 200mm, and second is apart from article one 0～10mm.
Further, the described pipe of building is for vacuum spiral coil and steel wire spiral pipe.
Further, described resin mixes gained in 100:26～30 in proportion by epoxy resin and epoxy curing agent.
Further, described glass-fiber-fabric is three axial glass-fiber-fabrics, and its every layer of axial wrong 10mm while laying.
Finally, solidify after by porous release film, flow-guiding screen, omega pipe, sealing joint strip, build pipe, the vacuum bag film is all removed.
Beneficial effect of the present invention: the process Leaf blade root of blade forming mainly adopts the technique of priming by vacuum heat cure to carry out the formation of blade root, this technique can reduce blade root perfusion not thoroughly or the blade root mass defect such as turn white greatly, improve the reliability of blade, heat cure simultaneously can be accelerated resin solidification, has improved the large-scale wind electricity Leaf productivity.
The specific embodiment
Further describe the present invention below in conjunction with specific embodiment.
The pre-formed technique of a kind of MW class large-scale wind electricity blade root, described processing step is: first blade root prefabricated component glass-fiber-fabric is laid on the blade root prefabricated-member mould, and then priming by vacuum, the moulding that is heating and curing, finally by the blade root prefabricated component after curing molding, call in main mould one-body molded.In the process of blade forming of the present invention, the main technique of priming by vacuum heat cure that adopts is carried out the formation of blade root, this technique can reduce blade root perfusion not thoroughly or the blade root mass defect such as turn white greatly, improve the reliability of blade, heat cure simultaneously can be accelerated resin solidification, has improved the large-scale wind electricity Leaf productivity.
Wherein, described prefabricated-member mould is consistent with the large-scale wind electricity blade profile, and specification is consistent.The profile according to the large-scale wind electricity blade of prefabricated-member mould is processed, and this prefabricated-member mould can be processed into the specification consistent with the large-scale wind electricity blade according to concrete production technology.
Particularly, the step of described priming by vacuum is, lays successively porous release film, release cloth, flow-guiding screen, omega pipe, sealing joint strip on glass-fiber-fabric, at the edge of flow-guiding screen, lays and builds pipe, the vacuum bag film is laid by the superiors, is finally vacuumized, the resin perfusion.Afterwards, described being heating and curing solidified for laying on surface after heating blanket heats, and solidification temperature is 70 degree.After cured by heating blanket, vacuum bag film, flow-guiding screen, build the auxiliary material of vacuum of laying before pipe, porous release film, release cloth, omega pipe, sealing joint strip etc. and removed, finally by the blade root prefabricated component after curing molding, call in main mould one-body molded.
Further, described sealing joint strip is butyl sealant; And it is two, wherein article one is apart from prefabricated-member mould die parting line 200mm, and second is apart from article one 5mm.Sealing joint strip is mainly to slow down resin (axially) mobile speed forward, thereby the increase resin speed that (tangential) permeates downwards solves the problem that the blade root perfusion is saturating or blade root turns white.
The vacuum bag film is double-deck the laying, lays one deck V160 flow-guiding screen between ground floor and the second layer, bleeds and sets up vacuum system; Vacuum system reaches 50mbr, and pressurize 10 minutes is lower than 50mbr; Epoxy resin and epoxy curing agent are opened gum-injecting port after mixing according to a certain percentage, are poured into.After having poured into, open the mold heating system heating blanket and temperature is warming up to 70 ℃ is cured.Per hour heat up 10 ℃, till 70 ℃, insulation is no less than 4 hours (solidifying the auxiliary material of tack-free easy removal with housing is as the criterion) or measure its hardness blade root with Shore durometer, and the demoulding can be carried out in hardness >=60 o'clock.
Finally, solidify after by porous release film, flow-guiding screen, omega pipe, sealing joint strip, build pipe, the auxiliary material of vacuum bag film equal vacuum is all removed, complete stand-by getting final product.
In addition, the described pipe of building is for vacuum spiral coil and steel wire spiral pipe, and vacuum spiral coil and steel wire spiral pipe are made intrusion pipe can guarantee rate of flooding and flow-guiding screen coupling, and the resin infiltration evenly.
In order to reach best mechanics effect resin by epoxy resin and epoxy curing agent 100:28 mixing gained in proportion.
In order to ensure the stressed even transmission of glass-fiber-fabric, glass-fiber-fabric is three axial glass-fiber-fabrics, and its every layer of axial wrong 10mm while laying.
The above technical scheme that the embodiment of the present invention is provided is described in detail, applied specific case herein principle and the embodiment of the embodiment of the present invention are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, on the specific embodiment and range of application, all will change, in sum, this description should not be construed as limitation of the present invention simultaneously.
Claims (8)
1. the pre-formed technique of MW class large-scale wind electricity blade root, it is characterized in that, described processing step is: first blade root prefabricated component glass-fiber-fabric is laid on the blade root prefabricated-member mould, and then priming by vacuum, the moulding that is heating and curing, finally by the blade root prefabricated component after curing molding, call in main mould one-body molded.
2. require the pre-formed technique of 1 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: described blade root prefabricated-member mould is consistent with the large-scale wind electricity blade profile, and specification is consistent.
3. require the pre-formed technique of 1 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: the step of described priming by vacuum is, lay successively porous release film, release cloth, flow-guiding screen, omega pipe, sealing joint strip on glass-fiber-fabric, lay and build pipe at the edge of flow-guiding screen, the vacuum bag film is laid by the superiors, is finally vacuumized, the resin perfusion.
4. require the pre-formed technique of 3 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: described sealing joint strip is butyl sealant; And it is two, wherein article one is apart from prefabricated-member mould die parting line 200mm, and second is apart from article one 0～10mm.
5. require the pre-formed technique of 3 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: the described pipe of building is for vacuum spiral coil and steel wire spiral pipe.
6. require the pre-formed technique of 3 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: described resin mixes gained in 100:26～30 in proportion by epoxy resin and epoxy curing agent.
7. require the pre-formed technique of 1 or 3 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: described glass-fiber-fabric is three axial glass-fiber-fabrics, and every layer of axial wrong 10mm during its laying.
8. require the pre-formed technique of 3 described MW class large-scale wind electricity blade root according to patent, it is characterized in that: after solidifying by porous release film, flow-guiding screen, omega pipe, sealing joint strip, build pipe, the vacuum bag film is all removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310398079.3A CN103419380B (en) | 2013-09-04 | 2013-09-04 | The pre-formed technique of MW class wind turbine blade blade root |
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| CN201310398079.3A CN103419380B (en) | 2013-09-04 | 2013-09-04 | The pre-formed technique of MW class wind turbine blade blade root |
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| CN103419380A true CN103419380A (en) | 2013-12-04 |
| CN103419380B CN103419380B (en) | 2016-01-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921457A (en) * | 2014-04-28 | 2014-07-16 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process |
| CN105215042A (en) * | 2015-09-23 | 2016-01-06 | 李福荣 | Wind electricity blade produce in produce method for treatment of waste material and make product application method |
| CN107856330A (en) * | 2017-12-06 | 2018-03-30 | 江苏金风科技有限公司 | Blade root prefabricated mould, blade root method for prefabricating, blade manufacture method and blade |
| CN107972290A (en) * | 2017-12-25 | 2018-05-01 | 江苏金风科技有限公司 | The manufacture method and blade of blade |
| CN109441712A (en) * | 2018-10-29 | 2019-03-08 | 株洲时代新材料科技股份有限公司 | A kind of control method of pre-buried type wind electricity blade blade root end face fold |
| CN109514884A (en) * | 2018-10-10 | 2019-03-26 | 迪皮埃复材构件（太仓）有限公司 | A kind of improvement process of blade vacuum perfusion |
| CN111376498A (en) * | 2018-12-27 | 2020-07-07 | 中材科技风电叶片股份有限公司 | Pouring process and forming method of wind power blade |
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| CN101462360A (en) * | 2007-12-18 | 2009-06-24 | 上海玻璃钢研究院 | High-power wind mill blade root disposal vacuum auxiliary pouring and molding method |
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| US20120006473A1 (en) * | 2010-06-13 | 2012-01-12 | Guifang Ren | Method of manufacturing root of megawatt wind-turbine blade |
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| CN100999137A (en) * | 2006-01-09 | 2007-07-18 | 通用电气公司 | Methods of making wind turbine rotor blades |
| CN101462360A (en) * | 2007-12-18 | 2009-06-24 | 上海玻璃钢研究院 | High-power wind mill blade root disposal vacuum auxiliary pouring and molding method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921457A (en) * | 2014-04-28 | 2014-07-16 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process |
| CN105215042A (en) * | 2015-09-23 | 2016-01-06 | 李福荣 | Wind electricity blade produce in produce method for treatment of waste material and make product application method |
| CN105215042B (en) * | 2015-09-23 | 2019-02-05 | 李福荣 | The method for treatment of waste material that generates and product application method is made in wind electricity blade production |
| CN107856330A (en) * | 2017-12-06 | 2018-03-30 | 江苏金风科技有限公司 | Blade root prefabricated mould, blade root method for prefabricating, blade manufacture method and blade |
| CN107972290A (en) * | 2017-12-25 | 2018-05-01 | 江苏金风科技有限公司 | The manufacture method and blade of blade |
| CN107972290B (en) * | 2017-12-25 | 2020-04-21 | 江苏金风科技有限公司 | Blade manufacturing method and blade |
| CN109514884A (en) * | 2018-10-10 | 2019-03-26 | 迪皮埃复材构件（太仓）有限公司 | A kind of improvement process of blade vacuum perfusion |
| CN109441712A (en) * | 2018-10-29 | 2019-03-08 | 株洲时代新材料科技股份有限公司 | A kind of control method of pre-buried type wind electricity blade blade root end face fold |
| CN109441712B (en) * | 2018-10-29 | 2020-04-10 | 株洲时代新材料科技股份有限公司 | Control method for wrinkles of end faces of blade roots of pre-buried wind power blades |
| CN111376498A (en) * | 2018-12-27 | 2020-07-07 | 中材科技风电叶片股份有限公司 | Pouring process and forming method of wind power blade |
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| CN103419380B (en) | 2016-01-27 |
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Owner name: CQGI GROUP CHENGFEI (DA AN) WIND POWER EQUIPMENT C Free format text: FORMER OWNER: CHONGQING GENERAL INDUSTRY (GROUP) CO., LTD. Effective date: 20141021 |
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Free format text: CORRECT: ADDRESS; FROM: 401336 NANAN, CHONGQING TO: 131300 BAICHENG, JILIN PROVINCE |
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Effective date of registration: 20141021 Address after: 131300 No. 2, Xing Gong Road, Da'an City, Jilin, Baicheng Applicant after: Trans Cheng Cheng Fei (Da an) wind power equipment Co., Ltd. Address before: 401336 Chongqing south bank area machine circuit number 18 Applicant before: Chongqing General Industry (Group) Co., Ltd. |
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Address after: 131300 No. 2, Xing Gong Road, Da'an City, Jilin, Baicheng Applicant after: Jilin Chong Tongchengfei new material joint-stock company Address before: 131300 No. 2, Xing Gong Road, Da'an City, Jilin, Baicheng Applicant before: Trans Cheng Cheng Fei (Da an) wind power equipment Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: CQGI GROUP CHENGFEI (DA AN) WIND POWER EQUIPMENT CO., LTD. TO: JILIN CHONGTONG CHENGFEI NEW MATERIAL CO., LTD. |
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