CN102166822B - Method for integrally forming blade lower shell of wind power generation machine and front edge adhering angle - Google Patents

Method for integrally forming blade lower shell of wind power generation machine and front edge adhering angle Download PDF

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Publication number
CN102166822B
CN102166822B CN 201010595146 CN201010595146A CN102166822B CN 102166822 B CN102166822 B CN 102166822B CN 201010595146 CN201010595146 CN 201010595146 CN 201010595146 A CN201010595146 A CN 201010595146A CN 102166822 B CN102166822 B CN 102166822B
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Prior art keywords
front edge
bonding angle
edge bonding
lower house
blade
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CN 201010595146
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CN102166822A (en
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姜志超
邹勤
林明
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Luoyang Sunrui Wind Turbine Bladeltd
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Luoyang Sunrui Wind Turbine Bladeltd
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Abstract

The invention belonging to the technical field of composite materials, and provides a method for integrally forming a blade lower shell of a wind power generation machine and a front edge adhering angle. The method for integrally forming the blade lower shell (2) of the wind power generation machine and the front edge adhering angle (6) comprises the steps of: manufacturing a front edge adhering angle die (14), fixing the front edge adhering die, integrally pouring and forming the front edge adhering angle (6) and the blade lower shell (2); integrally pouring and forming the front edge adhering angle and the lower shell by using the front edge adhering angle die (6); and curing the front edge adhering angle by using heat discharged by the curing of the lower shell (2). The problem caused by manual pasting of the front edge adhering angle is effectively avoided, the quality of front edge adhering is improved, time of singly manufacturing the front edge adhering angle and waiting the curing of the front edge adhering angle is saved, operation environment is improved and production efficiency is increased.

Description

A kind of wind power generation blade lower house and the integrated method of front edge bonding angle
Technical field
The invention belongs to technical field of composite materials, relate generally to a kind of wind power generation blade lower house and the integrated method of front edge bonding angle.
Background technology
In the forming process of wind power generation blade, because volume own is large, and there is support member in inside, so be difficult to one-shot forming, be generally to make by blade is divided into upper-lower casing, then by the bonding mode of upper-lower casing, make upper-lower casing form integral blade.For guaranteeing enough adhesive strengths, the bond area in the time of must adopting front edge bonding angle increase upper-lower casing bonding.Wind power generation blade can divide following step when making, as Fig. 1:
A) upper and lower casing laying.This step refers to glass fabric is routed to die surface, as the reinforcing material of blade.
B) perfusion of upper and lower casing.This step is by setting up respectively vacuum system on the upper-lower casing mould, and the glass fibre structure of the upper-lower casing of blade is coated in vacuum system, utilizes atmospheric pressure, and resin is filled in glass fabric, makes resin complete wetting glass fabric.
C) curing of upper and lower casing.This step is the heater that carries by the upper-lower casing mould, makes resin react gradually, and viscosity becomes greatly gradually, becomes at last the process of solid.
D) the upper and lower casing demoulding is made front edge bonding angle in the leading edge of lower house.This step refers to the leading edge at lower house, makes a splicing tape, the bond area of leading edge when bonding with increase blade upper-lower casing.
E) bonding web.This step refers on lower house, the process of bonding internal support.
F) matched moulds.This step refers to process that upper and lower casing is bonded together.
wind electricity blade is in the process of using, leading edge not only is subject to the effect of various load, especially also need bear the impact of various dusts storm, corrode, so also becoming blade, leading edge holds one of damageable zone most, the bonding quality of leading edge will directly determine the life-span of blade, and the goods of leading edge own are thin, the not enough 6mm of average thickness, as Fig. 2, bond area is not enough, adhesive strength is low, this will cause blade in the process of rotation, the upper-lower casing cracking, blade is directly scrapped, so, just pass through steps d in design) mode of making front edge bonding angle increases the bond area of leading edge, make leading edge that enough intensity be arranged, to guarantee the service life of blade, as seen the critical role of front edge bonding angle in whole leaf production process.
Make at present front edge bonding angle in industry and all adopt manual pasting forming process, the manufacturing process of this technique can be divided into the following steps:
The leading edge flange of cleaning blade lower house mould, convenient in this position placement front edge bonding angle mold, the lower house goods leading edge that polishing has been solidified.This step be mainly due to lower house in forming process, the out-of-flatness of goods leading edge is so need the irregular part of polishing lower house leading edge.
Front edge bonding angle mold (upper and lower casing and front edge bonding angle have respectively independently mould) is installed.This step need be adjusted the gap between front edge bonding angle mold and lower house mould leading edge, and the angle of pitching.
Hand is stuck with paste.This step is that the resin that will mix rolls or brush by hair, be coated in uniformly on glass fabric, make its complete wetting glass fabric, and then will infiltrate that good glass fabric is layered on the profile of front edge bonding angle mold and the lower house leading edge of having solidified on, during laying, half of the glass cloth width of complete wetting laid on the profile of front edge bonding angle mold again, and second half of width is laid on the lower house leading edge of having solidified.Using at last hair to roll drives the glass cloth of complete wetting and the bubble between the front edge bonding angle mold out of.Every paving layer of glass cloth, said process need to repeat once.
Cure and demold.The purpose of solidifying is to make front edge bonding angle laying and lower house leading edge reach firmly bonding.The demoulding is sloughed the front edge bonding angle mold after referring to wait resin solidification.
The polishing front edge bonding angle.This step is that the front edge bonding angle that will make carries out trimming, to reach suitable bond area.
Above-mentioned technique is called hand and sticks with paste technique, operating process is complicated, efficient is lower, and operating environment is poor, and due to manual unstability, cause the number of times of doing over again more, and manual pasting forming process is influenced by environmental temperature, especially the temperature difference in summer, winter and daytime, the temperature difference at night, make the demould time of front edge bonding angle be difficult to stablize, cause quality of item also variant.
Summary of the invention
The present invention is in order to solve the problems in hand paste technique, a kind of wind power generation blade lower house and the integrated method of front edge bonding angle are proposed, not only improve the bonding quality of leading edge, and the time of saving independent making front edge bonding angle and waiting for its curing, improve operating environment, enhance productivity.
A kind of wind power generation blade lower house and the integrated method of front edge bonding angle that the present invention proposes comprise fixing and the one form of front edge bonding angle and blade lower house of front edge bonding angle Mold Making, front edge bonding angle mold and blade lower house mould;
Concrete grammar of the present invention is:
The making of one form front edge bonding angle mold used;
Under the vacant state of upper and lower shell mould of blade, carry out the front edge bonding angle Mold Making; Described front edge bonding angle mold divides two parts to make, bottom surface at the lower house mould leading edge flange production front edge bonding angle mold of blade, profile at the upper shell mould leading edge flange production front edge bonding angle mold of blade, matched moulds by blade upper-lower casing mould again, two parts of the front edge bonding angle mold of above-mentioned making are bonding; Concrete manufacturing process can be divided into following step;
1) in the bottom surface of blade lower house mould leading edge flange production front edge bonding angle mold;
2) make the profile of front edge bonding angle mold in blade upper shell mould leading edge flange and profile;
3) coating adhesive on the bottom surface of front edge bonding angle mold;
4) by hydraulic overturn system, with 180 ° of blade upper shell mould upsets, with the bottom surface of front edge bonding angle mold and profile is bonding is integral;
5) open the blade upper shell mould, bonding front edge bonding angle roughcast is removed from the lower house mould, and the redundance of front edge bonding angle roughcast is cut polishing;
6) in order to increase the rigidity of front edge bonding angle mold, prevent distortion, guarantee again the light of front edge bonding angle simultaneously, can be after the front edge bonding angle Mold Making be completed, at its back side filled and process, to guarantee the firm of front edge bonding angle mold;
Front edge bonding angle and blade lower house one form;
1) carry out dried fleece-laying in blade lower house mould;
2) fixedly front edge bonding angle mold is installed; The front edge bonding angle mold is fixed on the leading edge flange of blade lower house mould;
The installation fixed form of one form front edge bonding angle mold used and blade lower house mould can adopt following several;
● mode a): use electric hand drill, hole on the bottom surface at leading edge flange, the front edge bonding angle mold of blade lower house mould respectively, by screw, the leading edge flange of front edge bonding angle mold and blade lower house mould is fixed;
● mode b): the certain thickness iron plate of back side installation in front edge bonding angle mold bottom surface, at blade lower house mould leading edge flange back side installation electromagnet, by electromagnet, the leading edge flange of front edge bonding angle mold and blade lower house mould is fixed;
● mode c): at front edge bonding angle mold bottom surface installation alignment pin, that the front edge bonding angle mold is relative fixing with blade lower house mould by alignment pin;
3) front edge bonding beam fleece-laying; The front edge bonding angle mold is laid on the needed glass fabric of front edge bonding angle on the profile of front edge bonding angle mold after installation on the leading edge flange of lower house mould is fixedly completed;
4) permeable medium; For guaranteeing that the glass fabric on front edge bonding angle mold (14) can be infiltrated by resin, with the permeable medium paving of blade lower house (2) leading edge to the position apart from front edge bonding angle mold 50mm;
5) one perfusion; Set up vacuum system, lower house glass fibre laying structure and front edge bonding angle laying structure are based upon carry out the one form in same vacuum system;
6) solidify; Be solidified into by the lower house of blade that in the solid process, liberated heat solidifies front edge bonding angle;
7) demoulding polishing: after the lower house of blade and front edge bonding angle solidify simultaneously, the leading edge adhesive mould is removed, and in the situation that guarantee blade upper-lower casing bond area excision front edge bonding angle unnecessary edge.
Characteristics of the present invention:
1) front edge bonding angle adopts vacuum infusion molding, has greatly reduced the gas content in the front edge bonding angle, has improved the front edge bonding angle quality, and quality is highly stable simultaneously;
2) front edge bonding angle and lower house moulding simultaneously, curing have simultaneously increased substantially production efficiency, have saved front edge bonding angle and have solidified separately required time;
3) moulding in vacuum system reduces evaporateing into airborne chemical substance, makes operating environment be greatly improved.
4) do laying and compare with hand pasting forming, labour intensity reduces greatly, has reduced operating personnel's quantity, and cost of labor reduces.
Description of drawings
Fig. 1 is the blade structure of wind power generation schematic diagram.
Fig. 2 is the not enough schematic diagram of leading edge bond area.
Fig. 3 is front edge bonding angle Mold Making process schematic diagram of the present invention.
In figure, 1, the blade upper shell, 2, the blade lower house, 3, leading edge, 4, trailing edge, 5, web, 6, front edge bonding angle, 7, blade lower house mould, 8, blade lower house leading edge flange, 9, front edge bonding angle mold bottom surface, 10, the blade upper shell mould, 11, blade upper shell leading edge flange, 12, front edge bonding angle die face, 13, adhesive, 14, the front edge bonding angle mold, 15, the foam boss.
The specific embodiment
By reference to the accompanying drawings embodiments of the invention are illustrated.
Embodiment
1) the form front edge bonding angle mold used that is made into one;
One form stickup angle mold used divides two parts to make, a part of lower house mould 7 moulding at blade, another part is in upper shell mould 10 moulding of blade, by hydraulic overturn system, with 180 ° of blade upper shell mould upsets, with the bottom surface of front edge bonding angle with profile is bonding is integral, in order to increase rigidity, prevent distortion, can be at front edge bonding angle mold back side filled and process or cellular material 15, manufacturing process can be divided into following step;
A) in bottom surface 9 that the leading edge flange 8 of the lower house mould 7 of blade is made the front edge bonding angle molds;
The profile 12 of b) making the front edge bonding angle mold in leading edge flange 11 and the profile of the upper shell mould 10 of blade;
C) scrape coating adhesive 13 on the bottom surface 9 of front edge bonding angle mold;
D) by hydraulic overturn system, with 180 ° of upper shell mould 10 upsets of blade, with the bottom surface 9 of front edge bonding angle with profile 12 is bonding is integral;
E) open blade upper shell mould 10, bonding front edge bonding angle mold 14 is removed from the lower house mould 7 of blade, and the redundance of front edge bonding angle mold 14 is cut polishing;
F) for increasing the rigidity of front edge bonding angle mold 14, prevent distortion, simultaneously guarantee that again front edge bonding angle mold 14 is light, can be after front edge bonding angle mold 14 completes, at its back side filled and process and honeycomb, form foam boss 15, firmly durable to guarantee front edge bonding angle mold 14;
2) front edge bonding angle and blade lower house one form;
A) carry out dried fleece-laying in blade lower house mould 7;
B) fixedly front edge bonding angle mold 14 is installed on the leading edge flange 8 of blade lower house mould;
The installation fixed form of one form front edge bonding angle mold used and blade lower house mould can adopt following several;
Mode i): use electric hand drill, boring on the leading edge flange 8 of blade lower house mould, front edge bonding angle mold bottom surface 9, fixing with the leading edge flange 8 of blade lower house mould with front edge bonding angle mold 14 by screw respectively;
Mode ii): certain thickness iron plate is installed at 9 the back side in front edge bonding angle mold bottom surface, at blade lower house mould leading edge flange 8 back sides, electromagnet is installed, and is by electromagnet, that front edge bonding angle mold 14 is fixing with the leading edge flange 8 of blade lower house mould;
Mode iii): 9 install alignment pins in front edge bonding angle mold bottom surface, and front edge bonding angle mold 14 is relative fixing with blade lower house mould 7 by alignment pin;
C) paste the dried fleece-laying in angle 6; Front edge bonding angle mold 14 is laid on the needed glass fabric of front edge bonding angle 6 on the profile 12 of front edge bonding angle mold after installation on the leading edge flange 8 of lower house mould is fixedly completed.
D) permeable medium; For guaranteeing that the glass fabric on front edge bonding angle mold 14 can be infiltrated by resin, with the permeable medium paving of blade lower house 2 leading edges to the position apart from front edge bonding angle mold 50mm;
E) one perfusion; Set up vacuum system, the laying structure of the glass fibre laying structure of blade lower house 2 and front edge bonding angle 6 is based upon carries out the one form in same vacuum system;
F); Be solidified into by blade lower house 2 that in the process of solid, liberated heat solidifies front edge bonding angle 6;
G) demoulding polishing: blade lower house 2 and front edge bonding angle 6 after solidifying simultaneously remove leading edge adhesive mould 14, and in the situation that guarantee that blade upper-lower casing bond area excises front edge bonding angle 6 unnecessary edge.

Claims (1)

1. one kind is used for wind power generation blade lower house (2) and the integrated method of front edge bonding angle (6), it is characterized in that: described integrated method comprises the one form of fixing and front edge bonding angle (6) and blade lower house (2) of making, the front edge bonding angle mold of front edge bonding angle mold (14); By front edge bonding angle mold (14), make front edge bonding angle and blade lower house one form; Utilizing blade lower house (2) to solidify institute's liberated heat makes front edge bonding angle (6) solidify; Specific embodiment is:
1) the form front edge bonding angle mold used (14) that is made into one;
A) make the bottom surface (9) of front edge bonding angle mold at blade lower house mould leading edge flange (8);
B) make the profile (12) of front edge bonding angle mold in blade upper shell mould leading edge flange (11) and profile;
C) at the upper coating adhesive in the bottom surface (9) of front edge bonding angle mold;
D) by hydraulic overturn system, with 180 ° of blade upper shell mould (10) upsets, with front edge bonding angle mold bottom surface (9) and bonding being integral of profile (12);
E) open blade upper shell mould (10), bonding front edge bonding angle roughcast is removed from blade lower house mould (7), and the redundance of front edge bonding angle roughcast is cut polishing;
F) in order to increase the rigidity of front edge bonding angle mold, prevent distortion, guarantee again the light of front edge bonding angle simultaneously, after the front edge bonding angle Mold Making is completed, at its back side filled and process, to guarantee the firm of front edge bonding angle mold;
2) front edge bonding angle and blade shell one laying perfusion;
A) carry out dried fleece-laying in blade lower house mould (7);
B) fixedly front edge bonding angle mold (14) is installed; The front edge bonding angle mold is fixed on blade lower house mould leading edge flange (8);
One form front edge bonding angle mold used (14) can adopt following several with the installation fixed form of blade lower house mould (7);
Mode i): use electric hand drill, in blade lower house mould leading edge flange (8), the upper boring in front edge bonding angle mold bottom surface (9), by screw, that front edge bonding angle mold (14) and blade lower house mould leading edge flange (8) is fixing respectively;
Mode ii): certain thickness iron plate is installed at the back side in front edge bonding angle mold bottom surface (9), at blade lower house mould leading edge flange (8) back side installation electromagnet, by electromagnet, that front edge bonding angle mold (14) and blade lower house mould leading edge flange (8) is fixing;
Mode iii): alignment pin is installed in front edge bonding angle mold bottom surface (9), the front edge bonding angle mold is relative fixing with blade lower house mould by alignment pin;
C) the dried fleece-laying of front edge bonding angle (6); Front edge bonding angle mold (14) is laid on the needed glass fabric of front edge bonding angle (6) on the profile (12) of front edge bonding angle mold after the upper installation of the leading edge flange (8) of lower house mould is fixedly completed;
D) permeable medium; For guaranteeing that the glass fabric on front edge bonding angle mold (14) can be infiltrated by resin, with the permeable medium paving of blade lower house (2) leading edge to the position apart from front edge bonding angle mold 50mm;
E) one perfusion; Set up vacuum system, the laying structure of the glass fibre laying structure of blade lower house (2) and front edge bonding angle (6) is based upon carries out the one form in same vacuum system;
F) solidify; Be solidified into by the lower house (2) of blade that in the solid process, liberated heat solidifies front edge bonding angle (6);
G) demoulding polishing: after the lower house of blade and front edge bonding angle solidify simultaneously, the leading edge adhesive mould is removed, and in the situation that guarantee blade upper-lower casing bond area excision front edge bonding angle unnecessary edge.
CN 201010595146 2010-12-20 2010-12-20 Method for integrally forming blade lower shell of wind power generation machine and front edge adhering angle Active CN102166822B (en)

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CN105346105B (en) * 2015-12-01 2017-05-31 洛阳双瑞风电叶片有限公司 The making mould and preparation method of a kind of wind electricity blade
CN106976254B (en) * 2017-05-17 2019-04-02 连云港中复连众复合材料集团有限公司 Sticking mould production method before blade with heating function
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