CN109551789B - Preparation method of polyurethane-supported adhesive angle of megawatt wind driven generator blade - Google Patents
Preparation method of polyurethane-supported adhesive angle of megawatt wind driven generator blade Download PDFInfo
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- CN109551789B CN109551789B CN201811443575.5A CN201811443575A CN109551789B CN 109551789 B CN109551789 B CN 109551789B CN 201811443575 A CN201811443575 A CN 201811443575A CN 109551789 B CN109551789 B CN 109551789B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000853 adhesive Substances 0.000 title claims description 18
- 230000001070 adhesive effect Effects 0.000 title claims description 18
- 229920002635 polyurethane Polymers 0.000 claims abstract description 63
- 239000004814 polyurethane Substances 0.000 claims abstract description 63
- 239000004744 fabric Substances 0.000 claims abstract description 43
- 238000005187 foaming Methods 0.000 claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 230000007547 defect Effects 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 230000037303 wrinkles Effects 0.000 abstract description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/682—Preformed parts characterised by their structure, e.g. form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a preparation method of a sticking angle with a polyurethane support for a megawatt wind driven generator blade, which comprises the steps of manufacturing an inner cavity (3) of a polyurethane foaming female die, manufacturing a polyurethane foaming female die (8) according to the inner cavity (3) of the polyurethane foaming female die, manufacturing a polyurethane support (9) according to the polyurethane foaming female die (8), paving fiber cloth for sticking the angle according to the paving sequence of the sticking angle (10), placing the polyurethane support (9) in a cavity area of the sticking angle (10), paving a vacuum system, and vacuumizing after hand pasting and paving to obtain the sticking angle. The method has the advantages of reasonable process design, strong operability, capability of effectively ensuring the shape following performance of the blade pasting angle and the shell cavity, contribution to ensuring the gap between the blade pasting angle and the blade shell, great reduction in the defects of pasting angle wrinkles, large bonding gap, resin-rich pasting angle corners and the like caused by manufacturing of the blade pasting angle, strong shape following performance, strong practicability and low production cost.
Description
Technical Field
The invention relates to a preparation method of a wind wheel blade component of a wind generating set, in particular to a preparation method of a megawatt wind generator blade with a polyurethane supporting and adhering angle.
Background
In the production process of the current blade, a pasting angle is a main part for preparing a composite material wind wheel blade of a wind generating set, a pasting angle structure is directly connected with one surface of a shell in a glass fiber reinforced plastic mode by hand pasting and laying, the pasting angle structure is connected with the other surface of the shell through an adhesive, the shape of a pasting angle bonding surface is mainly determined by the shape of a bonding inner cavity of the shell, the size of the current wind generating set blade is larger and larger, the shape is more and more complex, the shape adaptability of the pasting angle shape is difficult to guarantee by the manufacturing mode of the current used pasting angle, the bonding gap is difficult to guarantee under the influence of an operation process, the corner of the pasting angle is easy to cause rich resin, the defects of corner wrinkles and the like.
Therefore, it is necessary to design a method for manufacturing a wind turbine blade of a wind turbine generator system, which facilitates manufacturing of a blade pasting angle, is beneficial to ensuring a pasting angle gap, reduces pasting angle wrinkles caused by manufacturing of the pasting angle, has large pasting gap and other pasting defects, on the basis of the prior art.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides the preparation method of the adhering angle of the wind wheel blade of the megawatt wind generating set, which has reasonable process design and strong operability, is beneficial to manufacturing the adhering angle, is beneficial to ensuring the adhering gap of the adhering angle of the blade, and can reduce the adhering defects of adhering angle folds caused by manufacturing the adhering angle, resin-rich adhering corners and the like.
The technical scheme is as follows: in order to realize the purpose of the invention, the invention adopts the technical scheme that:
a preparation method of a polyurethane-supported adhesive angle of a megawatt wind turbine blade comprises the following steps:
a. respectively paving demoulding cloth on a suction surface mould and a pressure surface mould with a solidified blade shell, then respectively paving fiber cloth on the demoulding cloth in a hand pasting manner, then respectively covering the demoulding cloth on the surface of the fiber cloth, preparing a polyurethane foaming female mould inner cavity after solidification, tearing off the demoulding cloth covered on the surface of the polyurethane female mould inner cavity, scraping and coating an adhesive at the corner of the polyurethane foaming female mould inner cavity, turning over the pressure surface mould, and connecting the hand pasting solidified fiber cloth above the suction surface mould and the pressure surface mould;
b. opening the pressure surface die after the adhesive is cured; polishing to obtain a polyurethane foaming female die;
c. pouring polyurethane foaming raw materials into a polyurethane foaming female die, and foaming to form a polyurethane support;
d. laying fiber cloth at a pasting angle on a suction surface mould of a blade shell with an original blade structure layer by hand pasting, and then placing a polyurethane support above the fiber cloth at the pasting angle;
e. covering the fiber cloth with the adhered corners with demolding cloth, laying a spiral tube and a vacuum film, establishing a vacuum environment, and forming a pressure difference with the external environment so as to achieve the hand pasting and vacuumizing effects; and in the vacuum pre-tightening process, adjusting the vacuum film to ensure that the fiber cloth in the pasting corner area is compacted by the vacuum film.
f. And vacuumizing, and after the solidification of the sticking angle is finished, tearing off the demolding cloth, the spiral tube and the vacuum film which are covered on the sticking angle to obtain the integrally solidified and molded sticking angle with the polyurethane support.
As a preferred scheme, in the preparation method of the polyurethane supporting and adhering angle of the megawatt wind driven generator blade, in the step b, after the adhesive is cured, a pressure surface mold is opened; polishing, tearing off the outer surface demolding cloth, coating an adhesive on the outer surface of the inner cavity of the polyurethane foam, curing to obtain the outer reinforcement of the polyurethane foam female die, and thus obtaining the polyurethane foam female die with the outer reinforcement.
Preferably, in the method for preparing the blade with the polyurethane supporting and adhering angle of the megawatt wind driven generator, the polyurethane foaming raw materials comprise polyol and isocyanate in a weight ratio of 100: 140.
Preferably, in the above method for manufacturing the blade with the polyurethane support and attachment angle of the megawatt wind turbine, the pressure value of the vacuuming in the step f is greater than or equal to 86% of the local atmospheric pressure.
Preferably, in the preparation method of the blade with the polyurethane support sticking angle of the megawatt wind driven generator, the thickness of the inner cavity (3) of the polyurethane foaming female die is 5 mm.
Preferably, in the preparation method of the blade with the polyurethane support sticking angle of the megawatt wind turbine, the external reinforcing thickness of the polyurethane foaming female die is 3 mm.
According to the preparation method of the blade with the polyurethane support sticking angle of the megawatt wind driven generator, the polyurethane foaming inner cavity is made of glass fiber reinforced plastic or other inorganic non-metallic materials, and the polyurethane foaming inner cavity ensures that the shape and height of the polyurethane support meet the requirements so as to control the sticking gap.
Has the advantages that: compared with the prior art, the preparation method of the blade of the megawatt wind driven generator with the polyurethane support pasting angle has the following advantages:
the preparation method of the adhering angle with the polyurethane support for the megawatt wind driven generator blade provided by the invention has the advantages that the process design is reasonable, the operability is strong, and the polyurethane foaming female die is prepared by preparing the inner cavity of the polyurethane foaming female die in a mode of converting a male die to a female die for manufacturing the blade curing shell; according to the method, the shape following performance of the blade pasting angle and the shell cavity can be effectively guaranteed, the gap between the blade pasting angle and the blade shell can be guaranteed, the defects that pasting angle wrinkles and pasting angle corners are rich in resin and the like caused by manufacturing of the blade pasting angle can be greatly reduced, and the manufactured pasting angle is high in shape following performance and low in production cost.
Drawings
Fig. 1 is a schematic view of a structure for manufacturing a female mold cavity (3) in the method for manufacturing a pasting angle provided by the present invention.
Fig. 2 is a schematic view of a manufacturing structure of the external reinforcement (7) of the cavity of the female die in the preparation method of the pasting angle provided by the invention.
Fig. 3 is a schematic view of a manufacturing structure of the polyurethane support (9) in the preparation method of the pasting angle provided by the invention.
Fig. 4 is a schematic structural diagram of the pasting corner with the polyurethane support in the preparation method of the pasting corner provided by the invention.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
Example 1
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a method for preparing a polyurethane-supported adhesive angle of a megawatt wind turbine blade, taking a trailing edge adhesive angle of a 64.2m wind turbine blade as an example, includes the following steps:
firstly, copying a polyurethane foaming female die cavity 3 corresponding to the design position of a rear edge pasting angle in a 64.2m die with a blade curing shell;
a. respectively paving demoulding cloth 1 on a pressure surface mould 4 and a suction surface mould 11 at the design position of a rear edge sticking angle of 64.2m with a solidified shell 5, then respectively paving fiber cloth 2 on the demoulding cloth 1 by hand pasting, then respectively covering the demoulding cloth 1 on the surface of the fiber cloth 2, forming a polyurethane foaming female mould inner cavity 3 after solidification, tearing off part of the demoulding cloth covered on the surface of the polyurethane foaming female mould inner cavity, scraping an adhesive 6 at the corner of the polyurethane foaming female mould inner cavity 3, turning over the pressure surface mould 4, and connecting the suction surface mould 11 with the hand pasting solidified fiber cloth 2 above the pressure surface mould 4;
b. opening the pressure surface mold 4 after the adhesive 6 is cured; polishing, namely tearing off the outer surface demolding cloth, coating an adhesive on the outer surface of the polyurethane foaming inner cavity 3 to form a polyurethane foaming female die outer reinforcement 7 with the thickness of 3mm, wherein the adhesive needs to be completely cured, so that the strength of the polyurethane foaming female die 8 is ensured; forming a polyurethane foaming female die 8 with an external reinforcement 7; a set of 64.2m shell molds are correspondingly manufactured with a set of polyurethane foaming female molds 8, and the molds are recycled;
c. before the 64.2m mold closing process, polyurethane foaming raw materials are poured into the polyurethane foaming female mold 8 and foamed to form a polyurethane support 9;
d. in the 64.2m mold closing process, laying fiber cloth with a sticking angle 10 on a blade shell suction surface mold 11 with a blade original structural layer 12 in a hand pasting mode, and then placing a polyurethane support 9 above the fiber cloth with the sticking angle 10;
e. covering the fiber cloth with the rear edge sticking angle 10 on the demolding cloth 1 to form a sandwich structure, laying a spiral pipe 13 and a vacuum film 14, establishing a vacuum environment, and forming a pressure difference with the external environment, thereby achieving the effect of manually pasting and vacuumizing. In the vacuum pre-tightening process, the vacuum film 14 is adjusted to ensure that the fiber cloth in the area of the sticking angle 10 is compacted by the vacuum film;
f. vacuumizing, wherein the pressure value is greater than or equal to 86% of the local atmospheric pressure, and after the solidification of the adhering angle 10 is finished, tearing off the demolding cloth 1, the spiral pipe 13 and the vacuum film 14 which are covered on the adhering angle 10 to obtain the integrally solidified and molded adhering angle 10 with the polyurethane support 9.
The preparation method of the polyurethane supporting and adhering angle of the megawatt wind driven generator blade is characterized in that the polyurethane foaming raw materials are polyol and isocyanate with the weight ratio of 100: 140.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A preparation method of a polyurethane-supported adhesive angle of a megawatt wind turbine blade is characterized by comprising the following steps:
a. respectively paving demoulding cloth (1) on a suction surface mould (11) and a pressure surface mould (4) with a solidified blade shell (5), then respectively paving fiber cloth (2) on the demoulding cloth (1) in a hand pasting manner, then respectively covering the demoulding cloth (1) on the surface of the fiber cloth (2), preparing a polyurethane foaming female die inner cavity (3) after solidification, tearing off the demoulding cloth (1) on the surface of the polyurethane foaming female die inner cavity (3), blade-coating an adhesive (6) at the corner of the polyurethane foaming female die inner cavity (3), turning over the pressure surface mould (4), and connecting the suction surface mould (11) and the hand pasting solidified fiber cloth (2) above the pressure surface mould (4);
b. after the adhesive (6) is cured, opening the pressure surface mold (4); polishing, tearing off the outer surface demolding cloth, coating an adhesive on the outer surface of the polyurethane foaming inner cavity (3) in a scraping mode, curing to obtain an outer reinforcement (7) of the polyurethane foaming female die, and obtaining a polyurethane foaming female die (8) with the outer reinforcement (7);
c. pouring polyurethane foaming raw materials into the polyurethane foaming female die (8) and foaming to form a polyurethane support (9); the polyurethane foaming raw materials comprise polyol and isocyanate in a weight ratio of 100: 140;
d. laying fiber cloth of a sticking angle (10) on a blade shell suction surface mould (11) with an original blade structure layer (12) in a hand pasting manner, and then placing a polyurethane support (9) above the fiber cloth of the sticking angle (10);
e. covering the fiber cloth of the sticking angle (10) on the demoulding cloth (1), laying a spiral pipe (13) and a vacuum film (14), establishing a vacuum environment, forming pressure difference with the external environment, and further achieving the hand pasting and vacuum pumping effects; in the vacuum pre-tightening process, the vacuum film (14) is adjusted to ensure that the fiber cloth in the adhering angle (10) area is compacted by the vacuum film;
f. vacuumizing, and after the solidification of the sticking angle (10) is finished, tearing off the demolding cloth (1), the spiral pipe (13) and the vacuum film (14) covered on the sticking angle (10) to obtain the sticking angle (10) with the polyurethane support (9) which is integrally solidified and molded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811443575.5A CN109551789B (en) | 2018-11-29 | 2018-11-29 | Preparation method of polyurethane-supported adhesive angle of megawatt wind driven generator blade |
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| CN201811443575.5A CN109551789B (en) | 2018-11-29 | 2018-11-29 | Preparation method of polyurethane-supported adhesive angle of megawatt wind driven generator blade |
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| CN109551789A CN109551789A (en) | 2019-04-02 |
| CN109551789B true CN109551789B (en) | 2021-05-04 |
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| CN111037946A (en) * | 2019-09-11 | 2020-04-21 | 连云港中复连众复合材料集团有限公司 | Manufacturing method of I-shaped web of megawatt wind driven generator blade |
| CN112406140B (en) * | 2020-09-14 | 2022-09-23 | 航天特种材料及工艺技术研究所 | Molding method of die-pressing heat setting type polyurethane foam |
| CN113942151B (en) * | 2021-10-21 | 2022-10-04 | 山东双一科技股份有限公司 | Manufacturing method of bonding angle die for wind driven generator blade |
| CN114851593B (en) * | 2022-04-21 | 2023-05-05 | 成都飞机工业（集团）有限责任公司 | Compensation method for honeycomb core lateral base angle of sandwich composite product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166822A (en) * | 2010-12-20 | 2011-08-31 | 洛阳双瑞风电叶片有限公司 | Method for integrally forming blade lower shell of wind power generation machine and front edge adhering angle |
| CN103395213A (en) * | 2013-07-30 | 2013-11-20 | 无锡乘风新能源设备有限公司 | Manufacturing process of megawatt blade tail edge splicing angle |
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2018
- 2018-11-29 CN CN201811443575.5A patent/CN109551789B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166822A (en) * | 2010-12-20 | 2011-08-31 | 洛阳双瑞风电叶片有限公司 | Method for integrally forming blade lower shell of wind power generation machine and front edge adhering angle |
| CN103395213A (en) * | 2013-07-30 | 2013-11-20 | 无锡乘风新能源设备有限公司 | Manufacturing process of megawatt blade tail edge splicing angle |
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Effective date of registration: 20231121 Address after: 9th Floor, Block C, Building B6, Dongsheng Science and Technology Park, No. 66 Xixiaokou Road, Haidian District, Beijing, 100192 Patentee after: SINOMATECH WIND POWER BLADE Co.,Ltd. Address before: 222069 No.6, Jinqiao Road, Dapu Industrial Park, Lianyungang City, Jiangsu Province Patentee before: LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GROUP Co.,Ltd. |
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