CN104110352A - Method for manufacturing root portion of fan blade with square embedded bolt sleeve - Google Patents

Method for manufacturing root portion of fan blade with square embedded bolt sleeve Download PDF

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Publication number
CN104110352A
CN104110352A CN201410276542.1A CN201410276542A CN104110352A CN 104110352 A CN104110352 A CN 104110352A CN 201410276542 A CN201410276542 A CN 201410276542A CN 104110352 A CN104110352 A CN 104110352A
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CN
China
Prior art keywords
square
bolt sleeve
root
blade
fan blade
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.)
Granted
Application number
CN201410276542.1A
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Chinese (zh)
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CN104110352B (en
Inventor
黄辉秀
刘卫生
齐帆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongfu Lianzhong (Yuxi) composite material Co., Ltd.
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Lianyungang Zhongfu Lianzhong Composites Group Co Ltd
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Priority to CN201410276542.1A priority Critical patent/CN104110352B/en
Publication of CN104110352A publication Critical patent/CN104110352A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a method for manufacturing the root portion of a fan blade with a square embedded bolt sleeve. The method includes the steps that the square bolt sleeve is manufactured, twistless rovings are wound in a surface groove of the square bolt sleeve, then, optimization technological processing is conducted, and the square bolt sleeve and the root portion of the blade are integrally formed in a vacuum pouring mode so that the root portion of the fan blade can be obtained. According to the method for manufacturing the root portion of the fan blade with the square embedded bolt sleeve, the entire technological design is reasonable, operation is simple and convenient, plenty of manpower and material resources can be saved, and the production efficiency is higher. In particular, the optimized technology is adopted, the square embedded bolt sleeve is obtained, the strength and the firmness degree of the root portion of the blade can be greatly improved, the problem that the periphery of the bolt sleeve is rich in glue can be effectively solved, so that the strength of the fan blade is greatly increased, the dangerous condition that the bolt sleeve is pulled out of a laying layer of the root portion of the blade can be prevented, safe operation of long blade and high load fan blades can be guaranteed, and a good technological effect is achieved.

Description

A kind of preparation method of the fan blade root with square pre-embedded bolt cover
Technical field
Patent of the present invention relates to a kind of method of fan blade root, is specifically related to a kind of preparation method of the fan blade root with square pre-embedded bolt cover, belongs to technical field of wind power generation.
Background technique
Wind Power In China industry was since 2005, and through the fast development of 9 years, wind-driven generator set product obtained abundant fast, and type has had tens kinds.The wind field of its covering is from surpassing a class to weak four classes.
Wind electricity blade is a vitals of wind power generating set, and the length of blade is more and more longer at present, and the moment of flexure of root is also increasing, and root of blade has also more and more adopted pre-embedded bolt cover technology.
But the pre-embedded bolt of prior art cover is common circle, when preparation in the time of priming by vacuum root of blade, four angles up and down of circular pre-embedded bolt cover easily form buildup of resin, this buildup of resin is harmful to concerning the operation of blade very much, the in the situation that of blade High Rotation Speed, the dangerous situation such as may cause that bolt sleeve is extracted from root of blade laying.
Therefore, long in order to meet length, the stability and safety running demand of the fan blade that Generation Rate is large, the firm degree of a kind of bonding of necessary design research and development is on the basis of existing technology high, and its that can ensure the running of fan blade stability and safety has fan blade of square pre-embedded bolt cover and preparation method thereof very easily.
Summary of the invention
Goal of the invention: the object of the invention is in order to solve the deficiencies in the prior art, provide a kind of adhesive property reliable, join strength is high, and manufacturing efficiency is high, especially can solve the preparation method of the fan blade root of the square pre-embedded bolt cover of having of the rich glue problem of prior art bolt sleeve surrounding.It is long that the present invention can meet fan blade root length, the fan blade requirement that bearing load is larger.
Technological scheme: in order to realize object of the present invention, the technical solution used in the present invention is:
A preparation method with the fan blade root of square pre-embedded bolt cover, is characterized in that, comprises the following steps:
The preparation of a, square bolt sleeve:
Select the metallic material of circular bar or square cross section as processing base material, by circular or square processing base material heating, then put into the mould with the anti-profile of square bolt sleeve, applying external load presses, be processed into that surface has laterally or screw thread to the square bolt sleeve of groove, then sand blast is carried out on the surface of square shaped bolt sleeve, prepares square bolt sleeve;
B, in the surface groove of square bolt sleeve, be wound around roving;
C, then install one for locating the rigidity flange of square bolt sleeve at the root of blade mold;
D, at blade mold root laid inside release cloth, then on release cloth, lay certain thickness dry glass fiber cloth;
E, the square bolt sleeve that is wound with roving that then annular array installation steps b obtains successively on glass fiber cloth, and between two adjacent square bolt sleeves, put into the prefabricated glass bloom of unidirectional fibre;
F, then use the end of the each square bolt sleeve of PVC foam block shutoff, place wedge shape PVC piece;
G, then lay certain thickness dry glass fiber cloth at square bolt sleeve upper surface;
H, then adopt vacuum perfusion process perfusion resin, be heating and curing; Concrete steps are:
1) lay release cloth at blade mold blade shell internal surface;
2) and then on release cloth, lay flow-guiding screen;
3) and then lay priming by vacuum pipeline;
4) then whole blade mold is sealed with vacuum bag, and vacuumize;
5) in blade shell, pour into resin, be heating and curing;
I, inspection are also revised the planeness of root of blade, prepare the fan blade root with square pre-embedded bolt cover.
As preferred version, the preparation method of the above-described fan blade root with square pre-embedded bolt cover, the advantage such as described square bolt sleeve adopts 42CrMoA or 42CrMo alloyed steel to make, and has very high intensity, and carrying capacity is large, anticorrosive, durable in use.
As preferred version, the preparation method of the above-described fan blade root with square pre-embedded bolt cover, in step h, described resin is epoxy resin, vinylite or polyurethane resin.
The preparation method of the fan blade root with square pre-embedded bolt cover of the present invention, the rich glue of bolt sleeve surrounding existing according to prior art, firmly degree is poor, the dangerous situation that exists bolt sleeve to be pulled out from root of blade laying, screen by great many of experiments, preferably adopt square bolt sleeve, and the surface Machining of square bolt sleeve go out laterally or screw thread to groove, and sand blast is carried out on the surface of square shaped bolt sleeve, then in groove, be wound around roving at the horizontal or screw thread on square bolt sleeve surface, adopt in this way, can effectively solve the problem of the rich glue of bolt sleeve surrounding, ensure that square bolt sleeve can be one-body molded with root of blade, bonding firmly, thereby can greatly increase the intensity of fan blade, thereby can ensure linear leaf, the safe operation of high load fan blade, obtain good technique effect.
The preparation method of the fan blade root with square pre-embedded bolt cover of the present invention, step e puts into the prefabricated glass bloom of unidirectional fibre between two adjacent square bolt sleeves; And place wedge shape PVC piece in one end of square pre-embedded bolt cover; Described PVC foam block is preferably wedge shape; Adopt the advantage of this mounting type to be: produce while installation, because the outer cross section of bolt sleeve is square, adjacently can limit mutually between the two, can be very convenient quick on blade mold steel flange so pre-embedded bolt cover is arranged on.Avoid the circular pre-embedded bolt cover of prior art to occur the situation of rotating; Wedge shape PVC piece is installed to the end of square pre-embedded bolt in addition, fills very closely knitly, can effectively prevent buildup of resin, prevents the cracking being in operation; Avoid the rich buildup of resin on four angles of pre-embedded bolt, and then prevent that pre-embedded bolt from overlapping the large load of quilt and extracting, improve the Security of blade, fan operation.
The preparation method of the fan blade root with square pre-embedded bolt cover of the present invention, adopt vacuum film by whole blade mold sealed vacuum, adopt vacuum perfusion process, perfusion resin, solidifies one-body molded, preparation efficiency is high, can be by the one-body molded square bolt sleeve inside that is fixed on root of blade, firmly degree is higher, can meet root of blade length long, the fan blade requirement that bearing load is larger, has obtained good technique effect.
Beneficial effect: compared to the prior art the preparation method of the fan blade root with square pre-embedded bolt cover provided by the invention has the following advantages:
The preparation method that the fan blade root with square pre-embedded bolt cover providing is provided, whole technological design is reasonable, easy and simple to handle, can save a large amount of manpower and materials, and manufacturing efficiency is higher.Especially adopt preferred technique, prepare square pre-embedded bolt cover, and through selection process processing, then priming by vacuum and root of blade are one-body molded obtains, can greatly increase intensity and the firm degree of root of blade, can effectively solve the problem of the rich glue of bolt sleeve surrounding, greatly increase the intensity of fan blade, the dangerous situation such as prevent that bolt sleeve from extracting from root of blade laying, can ensure linear leaf, the safe operation of high load fan blade, obtains fine extraordinary technique effect.
And technological method provided by the invention compared to the prior art, ensureing under the condition of the firm degree of identical root of blade, adopt technique of the present invention, can reduce the number of the basic pre-embedded bolt cover of blade, thereby can greatly reduce production costs and the complexity of technique, more be added with the market competitiveness.
Brief description of the drawings
Fig. 1 is the structural representation of square bolt sleeve of the present invention.
Fig. 2 is the structural representation along the section of A-A direction in Fig. 1.
Fig. 3 is the structural representation along the section of B-B direction in Fig. 1.
Fig. 4 is the structural representation that square bolt sleeve of the present invention is arranged in root of blade.
Fig. 5 is the structural representation of the preparation process of the fan blade root of square pre-embedded bolt cover of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiments is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.
Embodiment 1
A preparation method 1, with the fan blade root of square pre-embedded bolt cover, comprises the following steps:
The preparation of a, square bolt sleeve:
Select the metallic material of circular bar or square cross section as processing base material, by circular or square processing base material heating, then put into the mould with the anti-profile of square bolt sleeve, applying external load presses, be processed into that surface has laterally or screw thread to the square bolt sleeve of groove, then sand blast is carried out on the surface of square shaped bolt sleeve, prepares square bolt sleeve (1); As shown in Figures 1 to 3:
B, in the surface groove of square bolt sleeve (1) be wound around roving (2);
C, then install one for locating the rigidity flange (4) of square bolt sleeve (1) at the root of blade mold (3);
D, at blade mold (3) root laid inside release cloth, then on release cloth, lay certain thickness dry glass fiber cloth (5);
E, the square bolt sleeve (1) that is wound with roving (2) that then annular array installation steps b obtains successively on glass fiber cloth (5), and put into the prefabricated glass bloom of unidirectional fibre (6) between adjacent two square bolt sleeves (1);
F, then use the end of PVC foam block (7) the each square bolt sleeve of shutoff (1), place wedge shape PVC piece (8), as shown in Figure 5;
G, then square bolt sleeve (1) upper surface lay certain thickness dry glass fiber cloth (8);
H, then adopt vacuum perfusion process perfusion resin, moulding is heating and curing; Concrete steps are:
1) the blade shell internal surface in blade mold (3) is laid release cloth;
2) and then on release cloth, lay flow-guiding screen;
3) and then lay priming by vacuum pipeline;
4) then whole blade mold (3) is sealed with vacuum bag, and vacuumize;
5) in blade shell, pour into resin, be heating and curing;
I, inspection are also revised the planeness of root of blade, prepare the fan blade root with square pre-embedded bolt cover, as shown in Figure 4.
The preparation method of the above-described fan blade root with square pre-embedded bolt cover, described square bolt sleeve (1) adopts 42CrMoA or 42CrMo alloyed steel to make.
The preparation method of the above-described fan blade root with square pre-embedded bolt cover, in step h, described resin is epoxy resin, vinylite or polyurethane resin.
The fan blade root with square pre-embedded bolt cover of selecting the embodiment of the present invention 1 to prepare, be assembled on 80 meters of long fan blades and try out, good stability, check through high speed operation, the degree that is connected firmly is high, do not occur that resin cracks and bolt sleeve become flexible situation, have obtained good technique effect.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (3)

1. a preparation method with the fan blade root of square pre-embedded bolt cover, is characterized in that, comprises the following steps:
The preparation of a, square bolt sleeve:
Select the metallic material of circular bar or square cross section as processing base material, by circular or square processing base material heating, then put into the mould with the anti-profile of square bolt sleeve, applying external load presses, be processed into that surface has laterally or screw thread to the square bolt sleeve of groove, then sand blast is carried out on the surface of square shaped bolt sleeve, prepares square bolt sleeve (1);
B, in the surface groove of square bolt sleeve (1) be wound around roving (2);
C, then install one for locating the rigidity flange (4) of square bolt sleeve (1) at the root of blade mold (3);
D, at blade mold (3) root laid inside release cloth, then on release cloth, lay certain thickness dry glass fiber cloth (5);
E, the square bolt sleeve (1) that is wound with roving (2) that then annular array installation steps b obtains successively on glass fiber cloth (5), and put into the prefabricated glass bloom of unidirectional fibre (6) between adjacent two square bolt sleeves (1);
F, then use the end of PVC foam block (7) the each square bolt sleeve of shutoff (1), place wedge shape PVC piece (8);
G, then square bolt sleeve (1) upper surface lay certain thickness dry glass fiber cloth (8);
H, then adopt vacuum perfusion process perfusion resin, moulding is heating and curing; Concrete steps are:
1) the blade shell internal surface in blade mold (3) is laid release cloth;
2) and then on release cloth, lay flow-guiding screen;
3) and then lay priming by vacuum pipeline;
4) then whole blade mold (3) is sealed with vacuum bag, and vacuumize;
5) in blade shell, pour into resin, be heating and curing;
I, inspection are also revised the planeness of root of blade, prepare the fan blade root with square pre-embedded bolt cover.
2. the preparation method of the fan blade root with square pre-embedded bolt cover according to claim 1, is characterized in that, described square bolt sleeve (1) adopts 42CrMoA or 42CrMo alloyed steel to make.
3. the preparation method of the fan blade root with square pre-embedded bolt cover according to claim 1, is characterized in that, in step h, described resin is epoxy resin, vinylite or polyurethane resin.
CN201410276542.1A 2014-06-19 2014-06-19 Method for manufacturing root portion of fan blade with square embedded bolt sleeve Active CN104110352B (en)

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Application Number Priority Date Filing Date Title
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104444578A (en) * 2014-10-23 2015-03-25 中材科技风电叶片股份有限公司 Automatic multi-axis yarn winding machine and closed-loop control yarn winding method adopted through automatic multi-axis yarn winding machine
CN104742381A (en) * 2015-03-31 2015-07-01 保定华翼风电叶片研究开发有限公司 Sealing structure and sealing method for end head of wind-power blade embedded bolt sleeve
CN105459417A (en) * 2015-12-11 2016-04-06 北京金风科创风电设备有限公司 Blade root end embedding device and production method of root end embedding blade
CN105464898A (en) * 2015-12-01 2016-04-06 中国科学院工程热物理研究所 Rotor blade structure of wind turbine and preparation method of rotor blade structure
CN105736256A (en) * 2016-03-25 2016-07-06 吉林重通成飞新材料股份公司 Embedded bolt sleeve for megawatt wind power blade
CN106739022A (en) * 2016-12-30 2017-05-31 湖南飞沃新能源科技股份有限公司 A kind of wind electricity blade built-in turnbuckle component and its mould and its production method
CN107199715A (en) * 2016-03-16 2017-09-26 株洲时代新材料科技股份有限公司 A kind of pre-buried blade root method for filling of bolt sleeve
CN107366673A (en) * 2016-05-11 2017-11-21 中材科技风电叶片股份有限公司 Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade
CN108819297A (en) * 2018-04-27 2018-11-16 刘念 The integrated curing method of 3 D weaving tubulose preform and end-fitting
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
CN109648894A (en) * 2018-12-28 2019-04-19 连云港中复连众复合材料集团有限公司 A kind of production method of the wind blade root prefabricated component of the set containing pre-embedded bolt
CN111098530A (en) * 2020-01-06 2020-05-05 株洲时代新材料科技股份有限公司 Wind power blade embedded bolt sleeve wire winding method and wire winding device
CN111101294A (en) * 2019-12-18 2020-05-05 江苏天鸟高新技术股份有限公司 Needled fiber preform with flange structure and preparation method thereof
CN111113740A (en) * 2019-12-26 2020-05-08 迪皮埃复材构件(太仓)有限公司 Method for positioning and mounting detachable composite material die
CN112238622A (en) * 2020-09-18 2021-01-19 常州市新创智能科技有限公司 Prefabricated part for wind power blade root

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Publication number Priority date Publication date Assignee Title
EP1398499A1 (en) * 1997-08-01 2004-03-17 Aloys Wobben Attachment of rotor blades to the hub of a wind turbine
TWM339584U (en) * 2007-12-07 2008-09-01 United Ship Design & Dev Ct An embedded stud with taper surface and key for root joint of wind turbine blade
CN201165933Y (en) * 2008-03-20 2008-12-17 中航惠腾风电设备股份有限公司 Wind electric blade bolt sleeve pre-embedded molding structure
CN101486258A (en) * 2009-02-27 2009-07-22 连云港中复连众复合材料集团有限公司 Method for manufacturing megawatt wind power generator blade root
CN102400859A (en) * 2011-08-12 2012-04-04 北京可汗之风科技有限公司 Blade root structure of wind power blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398499A1 (en) * 1997-08-01 2004-03-17 Aloys Wobben Attachment of rotor blades to the hub of a wind turbine
TWM339584U (en) * 2007-12-07 2008-09-01 United Ship Design & Dev Ct An embedded stud with taper surface and key for root joint of wind turbine blade
CN201165933Y (en) * 2008-03-20 2008-12-17 中航惠腾风电设备股份有限公司 Wind electric blade bolt sleeve pre-embedded molding structure
CN101486258A (en) * 2009-02-27 2009-07-22 连云港中复连众复合材料集团有限公司 Method for manufacturing megawatt wind power generator blade root
CN102400859A (en) * 2011-08-12 2012-04-04 北京可汗之风科技有限公司 Blade root structure of wind power blade

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104444578A (en) * 2014-10-23 2015-03-25 中材科技风电叶片股份有限公司 Automatic multi-axis yarn winding machine and closed-loop control yarn winding method adopted through automatic multi-axis yarn winding machine
CN104742381A (en) * 2015-03-31 2015-07-01 保定华翼风电叶片研究开发有限公司 Sealing structure and sealing method for end head of wind-power blade embedded bolt sleeve
CN105464898A (en) * 2015-12-01 2016-04-06 中国科学院工程热物理研究所 Rotor blade structure of wind turbine and preparation method of rotor blade structure
CN105464898B (en) * 2015-12-01 2018-10-09 中国科学院工程热物理研究所 A kind of rotor blade structure of wind turbine and preparation method thereof
CN105459417B (en) * 2015-12-11 2017-08-08 北京金风科创风电设备有限公司 The production method of blade root pre-embedded device and the pre-buried blade of butt
CN105459417A (en) * 2015-12-11 2016-04-06 北京金风科创风电设备有限公司 Blade root end embedding device and production method of root end embedding blade
CN107199715B (en) * 2016-03-16 2019-03-01 株洲时代新材料科技股份有限公司 A kind of pre-buried blade root method for filling of bolt sleeve
CN107199715A (en) * 2016-03-16 2017-09-26 株洲时代新材料科技股份有限公司 A kind of pre-buried blade root method for filling of bolt sleeve
CN105736256A (en) * 2016-03-25 2016-07-06 吉林重通成飞新材料股份公司 Embedded bolt sleeve for megawatt wind power blade
CN107366673A (en) * 2016-05-11 2017-11-21 中材科技风电叶片股份有限公司 Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade
CN106739022A (en) * 2016-12-30 2017-05-31 湖南飞沃新能源科技股份有限公司 A kind of wind electricity blade built-in turnbuckle component and its mould and its production method
CN108819297A (en) * 2018-04-27 2018-11-16 刘念 The integrated curing method of 3 D weaving tubulose preform and end-fitting
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
CN109648894A (en) * 2018-12-28 2019-04-19 连云港中复连众复合材料集团有限公司 A kind of production method of the wind blade root prefabricated component of the set containing pre-embedded bolt
CN111101294A (en) * 2019-12-18 2020-05-05 江苏天鸟高新技术股份有限公司 Needled fiber preform with flange structure and preparation method thereof
CN111101294B (en) * 2019-12-18 2021-04-27 江苏天鸟高新技术股份有限公司 Needled fiber preform with flange structure and preparation method thereof
CN111113740A (en) * 2019-12-26 2020-05-08 迪皮埃复材构件(太仓)有限公司 Method for positioning and mounting detachable composite material die
CN111098530A (en) * 2020-01-06 2020-05-05 株洲时代新材料科技股份有限公司 Wind power blade embedded bolt sleeve wire winding method and wire winding device
CN112238622A (en) * 2020-09-18 2021-01-19 常州市新创智能科技有限公司 Prefabricated part for wind power blade root

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