CN101865091B - Wind generator blade and forming method thereof - Google Patents
Wind generator blade and forming method thereof Download PDFInfo
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- CN101865091B CN101865091B CN2010102059764A CN201010205976A CN101865091B CN 101865091 B CN101865091 B CN 101865091B CN 2010102059764 A CN2010102059764 A CN 2010102059764A CN 201010205976 A CN201010205976 A CN 201010205976A CN 101865091 B CN101865091 B CN 101865091B
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- web
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- beam cap
- trailing edge
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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 through 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, and 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, the adhesive layer easy of crack causes adhesive structure to peel off; Blade is 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 causes 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 of crack inefficacy 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 that the present invention will solve 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 easy 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 following:
A kind of blade of wind-driven generator comprises housing and inner web, it is characterized in that; Comprise the beam cap, said beam cap overlap joint is in said web both sides, and said web comprises web sandwich, interior enhancement layer and outer enhancement layer; The interior enhancement layer of said web, outer enhancement layer stretch 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 of web and beam cap, form 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 closed intersection glass fiber reinforced layer of lee face and windward side.
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; The forming method of said blade of wind-driven generator also comprises the making step of the composite unit structure of web and beam cap, and said web comprises web sandwich, interior enhancement layer and outer enhancement layer, and the interior enhancement layer of said web, outer enhancement layer stretch 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 of web and beam cap; In said lay core step, adopted the air bag core identical with said enclosure interior shape.
This gas type air bag core comprises two parts, is respectively the trailing edge air bag core 15 and leading edge air bag core 14 that are placed on said web both sides.
The concrete steps of above-mentioned forming method are following:
1) making of the composite unit structure of web and beam cap
At first lay windward side beam cap 3; Place and fixedly leading edge web 4 and trailing edge web 2 beam cap 3 both sides in the windward side then; Last lay lee face beam cap 1, wherein each web all comprises sandwich, interior enhancement layer 5 and outer enhancement layer 6, the interior enhancement layer 5 of web, outer enhancement layer 6 stretch 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 interior enhancement layer 5 of web, outer enhancement layer 6 are 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 windward side outer glass fiber layer of cloth 8 in its surface after the drying, and in the front and rear edge both sides, this windward side outer glass fiber layer of cloth 8 leaves certain surplus during lay;
B fixing assemblying body 13 of web and beam cap on the shop layer of windward side outer glass fiber layer of cloth 8;
C in the both sides of beam lay windward side trailing edge sandwich 9 and windward side leading edge sandwich 11 respectively, windward side trailing edge sandwich 9 is close to windward side leading edge sandwich 11 and windward side beam cap 3;
D is the inner trailing edge glass fibre in lay windward side layer of cloth 7 and windward side inner leading edge glass fibre layer of cloth 12 on this windward side trailing edge sandwich 9 and windward side leading edge sandwich 11; In the front and rear edge both sides, the inner trailing edge glass fiber cloth 7 in windward side leaves certain surplus for 12 layers with windward side inner leading edge glass fibre layer of cloth;
3) core lay
On the layer of shop, place trailing edge air bag core 15 and leading edge air bag core 14 respectively; Coat the surface of leading edge air bag core 14 and trailing edge air bag core 15 with leading edge sealing package 21 and trailing edge sealing package 22; To trailing edge air bag core 15 and 14 li inflations of leading edge air bag core, air bag core shape is shown especially then;
4) making of lee face shop layer
A folds to front and rear edge side inner windward side inner trailing edge glass fibre layer of cloth 7 in windward side on this trailing edge air bag core 15 and leading edge air bag core 14 with the glass fiber cloth that windward side inner leading edge glass fibre layer of cloth 12 reserves; Lay lee face internal glass fibers 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, fixedly lee face leading edge sandwich 16 and lee face trailing edge sandwich 17 on this lee face internal glass fibers enhancement layer;
C reserves windward side front and rear edge side outside windward side outer glass fiber layer of cloth 8 and folds to fixedly on the lee face leading edge sandwich 16 and lee face trailing edge sandwich 17 on this lee face leading edge sandwich 16 and lee face trailing edge sandwich 17; And with the spray glue bond; Lay lee face outer glass fibre cloth overlaps with it, finally formation lee face outer glass fiber-reinforced layer on the lee face leading edge sandwich 16 of the beam cap of the assemblying body 13 of said web and beam cap and front and rear edge both sides and lee face trailing edge sandwich 17;
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 through 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;
B leading edge air bag core 14,15 exhausts of trailing edge air bag core, and from the blade inner chamber, take out.
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, 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 be according to different web adjustment enclosure interior shapes;
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;
Closed intersection glass fibre layer of cloth does not have overlap joint to the shop layer of blade of wind-driven generator in lee face and windward side, forms a continuous integral body after, the Young's modulus of the resin reinforcing material of blade is consistent, can not occur ftractureing or structure is peeled 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 statement is 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; Windward side outer glass fiber layer of cloth 8, windward side inner trailing edge glass fibre layer of cloth 7, windward side inner leading edge glass fibre layer of cloth 12; The assemblying body 13 of web and beam cap; Windward side trailing edge sandwich 9, windward side leading edge sandwich 11; Lee face leading edge sandwich 16, lee face trailing edge sandwich 17; Leading edge air bag core 14, trailing edge air bag core 15; Lee face mould 18; Sucking pipe 19; Glue inlet tube 20; Leading edge sealing package 21, trailing edge sealing package 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, like accompanying drawing 2,3, shown in 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 closed intersection glass fiber reinforced layer of lee face and windward side.
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 the disclosed blade of wind-driven generator of the present 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 6 of outer enhancement layers.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 following:
Elder generation's lay windward side beam cap 3;
Place the fixing leading edge web 4 and 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 is laid by glass fiber cloth with outer enhancement layer 6 and is 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 following:
On the surface of windward side mould 10, apply sealant and releasing agent; Lay windward side outer glass fiber layer of cloth 8 in its surface after the drying, as housing windward side outer glass fiber-reinforced layer, glass fiber cloth will leave certain surplus in the front and rear edge both sides during lay; And on shop layer the fixing assemblying body 13 of web and beam cap.Difference lay windward side trailing edge sandwich 9 and windward side leading edge sandwich 11 in the both sides of web, wherein windward side trailing edge sandwich 9 is close to windward side leading edge sandwich 11 and windward side beam cap 3; The inner trailing edge glass fibre in lay windward side layer of cloth 7 and windward side inner leading edge glass fibre layer of cloth 12 respectively on this windward side trailing edge sandwich 9 and windward side leading edge sandwich 11 then are 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: on windward side inner trailing edge glass fibre layer of cloth 7 and windward side inner leading edge glass fibre layer of cloth 12, place trailing edge air bag core 15 and leading edge air bag core 14 respectively; And,, blade bonds together air bag in order to avoid solidifying the back with leading edge sealing package 21 and trailing edge sealing package 22 coating air bag mandrel surfaces.To trailing edge air bag core 15 and 14 li inflations of leading edge air bag core, the shape of air bag core is shown especially.
Shown in Fig. 2 and 3, the working process of lee face shop layer is following:
Fold to the inner windward side of windward side front and rear edge side inner trailing edge glass fibre layer of cloth 7 and the glass cloth that windward side inner leading edge glass fibre layer of cloth 12 reserves on this trailing edge air bag core 15 and leading edge air bag core 14; Lay lee face internal glass fibers 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; Fixedly lee face leading edge sandwich 16 and lee face trailing edge sandwich 17 of lay on described lee face internal glass fibers enhancement layer subsequently; The windward side outer glass fiber layer of cloth 8 that reserves windward side front and rear edge side then folds on this lee face leading edge sandwich 16 and the lee face trailing edge sandwich 17; And with the spray glue bond; Lay lee face outer glass fibre cloth overlaps with it, finally on the lee face leading edge sandwich 16 of beam cap and front and rear edge both sides and lee face trailing edge sandwich 17, forms lee face outer glass fiber-reinforced layer.
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 through 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, said beam cap overlap joint is in said web both sides, and said web comprises web sandwich, interior enhancement layer (5) and outer enhancement layer (6); The interior enhancement layer (5) of said web, outer enhancement layer (6) stretch 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, form 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 said housing is a continuous glass fiber reinforced layer, does not have overlap joint in the closed intersection glass fiber reinforced layer of lee face and windward side.
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, making, injecting glue, curing and the demoulding step of lee face shop layer; It is characterized in that; The forming method of said blade of wind-driven generator also comprises the making step of the composite unit structure of web and beam cap, and said web comprises web sandwich, interior enhancement layer (5) and outer enhancement layer (6), and the interior enhancement layer (5) of said web, outer enhancement layer (6) stretch 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; In said core lay step, adopted the gas type air bag core identical with said enclosure interior shape.
4. the forming method of blade of wind-driven generator according to claim 3 is characterized in that, said gas type air bag core comprises two parts, is respectively the leading edge air bag core (14) and the trailing edge air bag core (15) that are placed on said 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), the interior enhancement layer (5) of web, outer enhancement layer (6) stretch 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;
2) making of shop, windward side layer
A applies sealant and releasing agent on the surface of windward side mould (10), lay windward side outer glass fiber layer of cloth (8) in its surface after the drying leaves surplus at said windward side, front and rear edge both sides outer glass fiber layer of cloth (8) during lay;
B goes up the assemblying body (13) of fixing said web and beam cap at said windward side outer glass fiber layer of cloth (8);
C in the both sides of web lay windward side trailing edge sandwich (9) and windward side leading edge sandwich (11) respectively, windward side trailing edge sandwich (9) and windward side leading edge sandwich (11) and windward side beam cap (3) are close to;
D goes up the inner leading edge glass fibre layer of cloth (12) of inner trailing edge glass fibre layer of cloth (7) in lay windward side and windward side at said windward side trailing edge sandwich (9) and windward side leading edge sandwich (11); In the front and rear edge both sides, inner trailing edge glass fibre layer of cloth (7) in said windward side and the inner leading edge glass fibre layer of cloth in windward side (12) leave surplus;
3) core lay
On the layer of shop, place said leading edge air bag core (14) and trailing edge air bag core (15) respectively; Coat the surface of leading edge air bag core (14) and trailing edge air bag core (15) with leading edge sealing package (21) and trailing edge sealing package (22); To leading edge air bag core (14) and the inflation of trailing edge air bag core (15) lining, leading edge air bag core (14) and trailing edge air bag core (15) shape are shown especially then;
4) making of lee face shop layer
A folds to the glass fiber cloth that the said windward side inside trailing edge glass fibre layer of cloth (7) and the inner leading edge glass fibre layer of cloth in windward side (12) of windward side front and rear edge side inside reserve on said leading edge air bag core (14) and trailing edge air bag core (15); Lay lee face internal glass fibers cloth overlaps with it, finally forms lee face internal glass fibers enhancement layer in assemblying body (13) both sides of said web and beam cap;
B is fixedly lee face leading edge sandwich (16) and lee face trailing edge sandwich (17) of lay on said lee face internal glass fibers enhancement layer;
C folds to and is fixed on said lee face leading edge sandwich (16) and the lee face trailing edge sandwich (17) at said lee face leading edge sandwich (16) and the last windward side outer glass fiber layer of cloth (8) that reserves windward side front and rear edge side the outside of lee face trailing edge sandwich (17); And with the spray glue bond; Lay lee face outer glass cloth overlaps with it, finally formation lee face outer glass fiber-reinforced layer on the said lee face leading edge sandwich (16) of the beam cap of the assemblying body (13) of said web and beam cap and front and rear edge both sides and lee face trailing edge sandwich (17);
5) injecting glue
A closed said 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 through 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 said 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 leading edge air bag core (14) and the interior gas of trailing edge air bag core (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 |
Applications Claiming Priority (1)
| 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 CN101865091A (en) | 2010-10-20 |
| CN101865091B true CN101865091B (en) | 2012-03-21 |
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| CN2010102059764A Expired - Fee Related CN101865091B (en) | 2010-06-10 | 2010-06-10 | Wind generator blade and forming method thereof |
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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 |
| CN103407174B (en) * | 2013-07-30 | 2015-08-05 | 北京航空航天大学 | A kind of integral forming method of fiber-reinforced resin matrix compound material CFRP lenticular collapsible tube |
| US9541061B2 (en) * | 2014-03-04 | 2017-01-10 | Siemens Energy, Inc. | Wind turbine blade with viscoelastic damping |
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| CN104985831A (en) * | 2015-06-06 | 2015-10-21 | 重庆通用工业(集团)有限责任公司 | Preparation method for glass fiber reinforced plastic pipe |
| CN106378942B (en) * | 2016-11-16 | 2018-10-09 | 连云港中复连众复合材料集团有限公司 | A kind of preparation of blade of MW class wind turbine girder spar cap and its installation method |
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| 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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| 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 |
| CN110645142B (en) * | 2019-09-27 | 2023-09-22 | 明阳智慧能源集团股份公司 | Modularized wind power blade not scrapped in full life cycle and manufacturing method thereof |
| US11046420B2 (en) * | 2019-10-23 | 2021-06-29 | The Boeing Company | Trailing edge flap having a waffle grid interior structure |
| CN112360681A (en) * | 2020-10-29 | 2021-02-12 | 中材科技（邯郸）风电叶片有限公司 | Wind power blade and production process |
| CN113183486A (en) * | 2021-05-17 | 2021-07-30 | 陕西天翌天线股份有限公司 | Composite product preparation tool and preparation method thereof |
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