CN101865091A - Wind generator blade and forming method thereof - Google Patents
Wind generator blade and forming method thereof Download PDFInfo
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- CN101865091A CN101865091A CN201010205976A CN201010205976A CN101865091A CN 101865091 A CN101865091 A CN 101865091A CN 201010205976 A CN201010205976 A CN 201010205976A CN 201010205976 A CN201010205976 A CN 201010205976A CN 101865091 A CN101865091 A CN 101865091A
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- web
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- windward side
- beam cap
- lee face
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Abstract
The invention mainly relates to an improvement of a wind generator blade, particularly to an integral forming process of a wind generator blade and a forming product thereof. The invention discloses a wind generator blade. A web and a spar cap of the wind generator blade are in an assembly structure, which can balance stress, enhance the mechanical property of the blade, and prevent the cross section of the blade from deforming in a better way. The invention also discloses a forming method of the wind generator blade. In the method, a mandrel of an inflatable air bag, which is in a shape similar to the inner shape of a shell, is adopted; and the air bag can be easily taken out by bleeding the air, which is convenient for demoulding and can prevent the blade from being damaged, and the mandrel is reusable.
Description
Technical field
The present invention relates generally to the improvement of blade of wind-driven generator, especially wind-driven generator integral blade and integral forming method thereof.
Background technique
At present, domestic manufacturing blade of MW class wind turbine, two shells are in the method manufacturing of leading edge and trailing edge bonding up and down generally to adopt windward side and lee face, and inner web also is fixing by adhesive and housing bonding.The produced blade of this kind technology is because the adhesive after solidifying and the resin reinforcing material of blade have very big difference on material behavior, on Young's modulus, adhesive and resin reinforcing material have the difference of the order of magnitude, and the adhesive embrittlement after solidifying, under the effect of local motion, adhesive layer ftractures easily, cause adhesive structure to peel off, blade is under non-linear big loading, the shape of cross section of blade is easy to deform, finally cause the aeroperformance of blade to descend, even cause blade to lose efficacy.
Method (the denomination of invention: Methodfor manufacturing windmill blades of the manufacturing blade of wind-driven generator of people such as the Stiesdal of Denmark invention, notice of authorization number: EP1310351A1), adopt the integral forming technique method, avoided the defective of the bonding easy Cracking Failure of two shells up and down.But this method adopts material cores such as wood veneer, cork wood or PVC foamed plastics, and after blade of wind-driven generator solidified, demoulding was very inconvenient, and damaged easily, can not reuse.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of blade of wind-driven generator and forming method thereof, after the solution blade of wind-driven generator solidifies, is difficult to demoulding, and is easily impaired, the problem that core can't reuse; Solve blade simultaneously under non-linear big loading, the shape of cross section of blade is easy to deform, and finally causes the aeroperformance of blade to descend, even the problem of blade inefficacy.
For addressing the above problem, technological scheme of the present invention is as follows:
A kind of blade of wind-driven generator comprises housing and inner web, it is characterized in that comprise the beam cap, described beam cap is overlapped on described web both sides, forms the composite unit structure of web and beam cap.
The external layer of above-mentioned housing is equipped with layer.This shop layer is a continuous glass fiber reinforced layer, does not have overlap joint in the intersection glass fiber reinforced layer of lee face and windward side closure.
A kind of forming method of above-mentioned blade of wind-driven generator, comprise making, the lay core of windward side shop layer, the steps such as making, injecting glue, curing and the demoulding of lee face shop layer, it is characterized in that, in described lay core step, adopted the air bag core identical with described enclosure interior shape.
This gas type air bag core comprises two parts, is respectively the air bag core 15 and 14 that is placed on described web both sides.
The concrete steps of above-mentioned forming method are as follows:
1) making of the composite unit structure of web and beam cap
At first lay windward side beam cap 3, place in beam cap 3 both sides, windward side then and fixedly leading edge web 4 and trailing edge web 2, last lay lee face beam cap 1, wherein each web all comprises sandwich, interior enhancement layer 5 and outer enhancement layer 6, the inside and outside enhancement layer 5,6 of web stretches bending to the beam cap in the jointing place of web and beam cap, web and beam cap are become one, form the assemblying body 13 of web and beam cap.The inside and outside enhancement layer 5,6 of web is a glass fiber cloth, and in the front and rear edge both sides, glass fiber cloth leaves surplus;
2) making of shop, windward side layer
A applies sealant and releasing agent on the surface of windward side mould 10, lay glass fibre layer of cloth 8 in its surface after the drying, and in the front and rear edge both sides, this glass fibre layer of cloth 8 leaves certain surplus during lay;
B fixing assemblying body 13 of web and beam cap on the layer of the shop of glass fibre layer of cloth 8;
C in the both sides of beam lay windward side sandwich 9 and 11 respectively, windward side sandwich 9 and 11 and windward side beam cap 3 be close to;
D is lay glass fiber cloth layer 7 and 12 on this windward side sandwich 9 and 11, and in the front and rear edge both sides, glass fiber cloth 7 and 12 layers leave certain surplus;
3) core lay
Place air bag core 15 and 14 respectively on the layer of shop, the surface with sealing package 21 and 22 coating air bag cores 15 and 14 then to air bag core 15 and 14 li inflations, shows air bag core shape especially;
4) making of lee face shop layer
The glass fiber cloth that a reserves the glass fibre layer of cloth 7 and 12 of front and rear edge side inside, windward side folds on this air bag core 15 and 14, the lay glass fiber cloth overlaps with it, finally forms lee face internal glass fibers enhancement layer in assemblying body 13 both sides of web and beam cap;
B is lay, fixing lee face sandwich 16 and 17 on this lee face internal glass fibers enhancement layer;
C folds to fixedly on the lee face sandwich 16 and 17 on this lee face sandwich 16 and 17 windward side front and rear edge side being reserved outside glass fibre layer of cloth 8, and with spraying glue bond, the lay glass fiber cloth overlaps with it, finally forms lee face outer glass fiber-reinforced layer on the lee face sandwich 16 and 17 of the beam cap of the assemblying body 13 of described web and beam cap and front and rear edge both sides;
5) injecting glue
A closed above-mentioned windward side mould 10 and lee face mould 18, and seal two moulds;
B install and fix sucking pipe 19 in the trailing edge side, be installed into sebific duct 20 at front edge side, open vacuum pump is drawn dies cavities by sucking pipe 19 gas;
C makes two mould half-twists after the sealing, makes on the trailing edge side direction, and front edge side is downward, opens glue inlet tube 20, and then resin adhesive liquid is moving along windward side and lee face shop laminar flow from front edge side, and layer thoroughly soaks into up to the shop;
6) curing and the demoulding
A solidify the back upset, separate windward side mould 10 and lee face mould 18;
Beneficial effect of the present invention is that core has adopted the gas type air bag core identical with the enclosure interior shape, behind the forming and hardening of blade of wind-driven generator, passes through air bag deflation, can be easy to air bag is taken out, demoulding is convenient, and is not easy to damage, and can reuse;
Employing is respectively the air bag core that is placed on the web both sides, can adjust the enclosure interior shape according to different webs;
Blade of wind-driven generator web and beam cap adopt the assemblying body mode, and better equilibrium stress improves mechanical property, stop the shape of cross section of blade to deform;
The shop layer of blade of wind-driven generator does not have overlap joint at the intersection glass fibre layer of cloth of lee face and windward side closure, form a continuous integral body after, the Young's modulus unanimity of the resin reinforcing material of blade, can not occur the cracking or structure peel off.
Description of drawings
Fig. 1 illustrates web and the composite unit structure schematic representation of beam cap and the partial enlarged drawing of web and beam cap binding site of blade of wind-driven generator of the present invention;
Fig. 2 illustrates the schematic representation of windward side of the present invention and lee face shop layer transition region;
Fig. 3 illustrates the schematic representation under windward side of the present invention and the closed situation of lee face shop layer;
Fig. 4 illustrates the present invention at the make a bet schematic representation of gum forming process of vacuum assistant resin infused.
Each mark is expressed as follows in the accompanying drawing:
Lee face beam cap 1; Trailing edge web 2; Windward side beam cap 3; Leading edge web 4; Interior enhancement layer 5; Outer enhancement layer 6; Windward side mould 10; Glass fibre layer of cloth 7,8,12; The assemblying body 13 of web and beam cap; Windward side sandwich 9,11; Lee face sandwich 16,17; Air bag core 14,15; Lee face mould 18; Sucking pipe 19; Glue inlet tube 20; Sealing package 21,22.
Embodiment
Specify the embodiment of this invention below in conjunction with accompanying drawing;
The invention discloses a kind of blade of wind-driven generator, it comprises housing and at the web of this enclosure interior and the assemblying body 13 of beam cap, is used to strengthen blade, shown in accompanying drawing 2,3,4.In addition, outside is equipped with glass fiber reinforced layer.This glass fiber reinforced layer is continuous integral body, does not have overlap joint in the intersection glass fiber reinforced layer of lee face and windward side closure.
Fig. 1 illustrates web and the composite unit structure schematic representation of beam cap and the partial enlarged drawing of web and beam cap binding site of blade of wind-driven generator disclosed in this invention.Shown in the composite unit structure schematic representation of the web of Fig. 1 and beam cap, the assemblying body of web and beam cap adopts sandwich structure, and its central sill cap comprises windward side beam cap 3 and lee face beam cap 1, and web comprises leading edge web 4 and trailing edge web 2.Each web is made up of web sandwich, interior enhancement layer 5 and outer enhancement layer 6.With vacuum assistant resin infused the be made into one web of type and the assemblying body of beam cap, its concrete process of deployment is as follows:
Elder generation's lay windward side beam cap 3;
Place fixing leading edge web 4 and the trailing edge web 2 of on the web sandwich, having completed glass fiber reinforced layer;
And then lay lee face beam cap 1.
Web and beam cap binding site structure are shown in the partial enlarged drawing of Fig. 1, the interior enhancement layer 5 of web and outer enhancement layer 6 are laid by glass fiber cloth and are formed, and stretch bending to the beam cap in the jointing place of web and beam cap, utilize this structure to realize the integrated of web and beam cap behind the injecting glue.After the vacuum package, adopt the vacuum assistant resin infused manufacturing.
Fig. 2 shows the schematic representation of windward side of the present invention and lee face shop layer transition region.With reference to figure 2, the working process of shop, windward side layer is as follows:
Coating sealant and releasing agent on the surface of windward side mould 10; Lay glass fibre layer of cloth 8 in its surface after the drying as housing windward side outer glass fiber-reinforced layer, will leave certain surplus at front and rear edge both sides glass fiber cloth during lay; And on shop layer the fixing assemblying body 13 of web and beam cap.The lay windward side sandwich 9 and 11 respectively in the both sides of web, wherein windward side sandwich 9 and 11 and windward side beam cap 3 be close to; On this windward side sandwich 9 and 11, distinguish lay glass fibre layer of cloth 7 and 12 then, as windward side internal glass fibers enhancement layer.In the front and rear edge both sides, glass fiber cloth will leave certain surplus.
As shown in Figure 2, core lay step is: place air bag core 15 and 14 respectively on glass fibre layer of cloth 7 and 12, and coat the air bag mandrel surface with sealing package 21 and 22, in order to avoid blade solidifies the back air bag is bonded together.To air bag core 15 and 14 li inflations, the shape of air bag core is shown especially.
Shown in Fig. 2 and 3, the working process of lee face shop layer is as follows:
The glass cloth that windward side front and rear edge side internal glass fibers layer of cloth 7 and 12 is reserved folds on this air bag core 15 and 14, the lay glass fiber cloth overlaps with it, finally forms the lee face internal glass fibers enhancement layer of housing in assemblying body 13 both sides of web and beam cap.
Equally shown in Fig. 2 and 3, the fixing lee face sandwich 16 and 17 of lay on described lee face internal glass fibers enhancement layer subsequently, then windward side front and rear edge side being reserved outer glass fiber layer of cloth 8 folds on this lee face sandwich 16 and 17, and with spraying glue bond, the lay glass fiber cloth overlaps with it, the final lee face outer glass fiber-reinforced layer that forms on the lee face sandwich 16 and 17 of beam cap and front and rear edge both sides.
With reference to figure 3, injecting glue of the present invention, curing and knockout course are: closed lee face mould 18, and lee face mould 18 is connected with windward side mould 10 tighten together, and seal two moulds, comprise the front and rear edge side of sealed mold, and blade root end.Install and fix sucking pipe 19 in the trailing edge side, be installed into sebific duct 20 at front edge side, open the gas of vacuum pump by sucking pipe 19 absorption dies cavities, because the effect of inner and outer air pressure difference, the outer glass fibre cloth of lee face mould 18 sides closely adheres to the mold cavity surface.Make the entire die half-twist, as shown in Figure 4, make on the trailing edge side direction, front edge side is downward, utilizes vacuum assistant resin infused moulding blade.Open glue inlet tube 20, then resin adhesive liquid is moving along windward side and lee face shop laminar flow from front edge side, and layer thoroughly soaks into up to the shop, solidifies the back upset, separates windward side mould 10 and lee face mould 18, takes out inner balloon, can make the integrated blade after the demoulding.
In this specification, the present invention has been made specific description, still can make various modifications and conversion obviously and do not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. a blade of wind-driven generator comprises housing and inner web, it is characterized in that comprise the beam cap, described beam cap is overlapped on described web both sides, forms the composite unit structure of web and beam cap.
2. blade of wind-driven generator according to claim 1 is characterized in that, the outer surface shop layer of described housing is a continuous glass fiber reinforced layer, does not have overlap joint in the intersection glass fiber reinforced layer of lee face and windward side closure.
3. the forming method of a blade of wind-driven generator according to claim 1 and 2, comprise making, the core lay of windward side shop layer, the steps such as making, injecting glue, curing and the demoulding of lee face shop layer, it is characterized in that, in described core lay step, adopted the gas type air bag core identical with described enclosure interior shape.
4. the forming method of blade of wind-driven generator according to claim 3 is characterized in that, described gas type air bag core comprises two parts, is respectively the air bag core (14) and (15) that are placed on described web both sides.
5. the forming method of blade of wind-driven generator according to claim 4, its forming method concrete steps are:
1) making of the composite unit structure of web and beam cap
Lay windward side beam cap (3), place then, fixedly leading edge web (4) and trailing edge web (2), last lay lee face beam cap (1), its median ventral plate comprises web sandwich, interior enhancement layer (5) and outer enhancement layer (6), bending is stretched to the beam cap in the jointing place of web and beam cap in the inside and outside enhancement layer (5) of web, (6), web and beam cap are become one, form the assemblying body (13) of web and beam cap;
2) making of shop, windward side layer
A applies sealant and releasing agent on the surface of windward side mould (10), lay glass fibre layer of cloth (8) in its surface after the drying, and described glass fibre layer of cloth (8) leaves surplus in the front and rear edge both sides during lay;
B goes up the assemblying body (13) of fixing described web and beam cap at described glass fibre layer of cloth (8);
C in the both sides of web lay windward side sandwich (9) and (11) respectively, windward side sandwich (9) and (11) and windward side beam cap (3) are close to;
D goes up lay glass fiber cloth layer (7) and (12) at described windward side sandwich (9) and (11), and in the front and rear edge both sides, surplus is left in described glass fibre layer of cloth (7) and (12);
3) core lay
On the layer of shop, place described air bag core (14) and (15) respectively,, to air bag core (14) and the inflation of (15) lining, air bag core (14) and (15) shape are shown especially then with the surface of sealing package (21) and (22) coating air bag core (14) and (15);
4) making of lee face shop layer
The glass fiber cloth that a reserves described glass fibre layer of cloth (7) and (12) of front and rear edge side inside, windward side folds on described air bag core (14) and (15), the lay glass fiber cloth overlaps with it, finally forms lee face internal glass fibers enhancement layer in assemblying body (13) both sides of described web and beam cap;
B is lay fixedly lee face sandwich (16) and (17) on described lee face internal glass fibers enhancement layer;
C reserves outside glass fibre layer of cloth (8) to windward side front and rear edge side and folds to and be fixed on described lee face sandwich (16) and (17) on described lee face sandwich (16) and (17), and with spraying glue bond, the lay glass cloth overlaps with it, finally goes up formation lee face outer glass fiber-reinforced layer at the beam cap of the assemblying body (13) of described web and beam cap and described lee face sandwich (16) and (17) of front and rear edge both sides;
5) injecting glue
A closed described windward side mould (10) and lee face mould (18), and seal two moulds;
B install and fix sucking pipe (19) in the trailing edge side, be installed into sebific duct (20) at front edge side, open vacuum pump is drawn dies cavity by sucking pipe (19) gas;
Two mould half-twists after c will seal make on the trailing edge side direction, and front edge side is downward, open described glue inlet tube (20), and then resin adhesive liquid is moving along windward side and lee face shop laminar flow from front edge side, and layer thoroughly soaks into up to the shop;
6) curing and the demoulding
A solidify the back upset, separate windward side mould (10) and lee face mould (18); B discharge the interior gas of air bag core (14) and (15), and from the blade inner chamber, take out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102059764A CN101865091B (en) | 2010-06-10 | 2010-06-10 | Wind generator blade and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102059764A CN101865091B (en) | 2010-06-10 | 2010-06-10 | Wind generator blade and forming method thereof |
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| CN101865091A true CN101865091A (en) | 2010-10-20 |
| CN101865091B CN101865091B (en) | 2012-03-21 |
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| CN102518567A (en) * | 2011-12-26 | 2012-06-27 | 无锡韦伯风能技术有限公司 | Lightweight high-strength blade and manufacturing technology thereof |
| CN103057126A (en) * | 2012-12-14 | 2013-04-24 | 内蒙古金岗重工有限公司 | Large-scale composite material integral molding blade and molding process thereof |
| CN103407174A (en) * | 2013-07-30 | 2013-11-27 | 北京航空航天大学 | Integrally-forming method of CFRP lenticular collapsible tube |
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| CN102518567A (en) * | 2011-12-26 | 2012-06-27 | 无锡韦伯风能技术有限公司 | Lightweight high-strength blade and manufacturing technology thereof |
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| CN103407174A (en) * | 2013-07-30 | 2013-11-27 | 北京航空航天大学 | Integrally-forming method of CFRP lenticular collapsible tube |
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| CN106378942A (en) * | 2016-11-16 | 2017-02-08 | 连云港中复连众复合材料集团有限公司 | Manufacturing and installation method of megawatt-stage wind turbine blade girder cap |
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| CN109203515A (en) * | 2018-10-12 | 2019-01-15 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade and its manufacturing method |
| CN109236560A (en) * | 2018-11-07 | 2019-01-18 | 明阳智慧能源集团股份公司 | A kind of gasbag-type wind electricity blade structure |
| CN109236560B (en) * | 2018-11-07 | 2024-01-05 | 明阳智慧能源集团股份公司 | Gasbag formula wind-powered electricity generation blade structure |
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| Publication number | Publication date |
|---|---|
| CN101865091B (en) | 2012-03-21 |
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