CN102320142B - Trailing edge splicing method for megawatt wind driven generator blade to assemble die - Google Patents
Trailing edge splicing method for megawatt wind driven generator blade to assemble die Download PDFInfo
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- CN102320142B CN102320142B CN 201110159962 CN201110159962A CN102320142B CN 102320142 B CN102320142 B CN 102320142B CN 201110159962 CN201110159962 CN 201110159962 CN 201110159962 A CN201110159962 A CN 201110159962A CN 102320142 B CN102320142 B CN 102320142B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000007547 defect Effects 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 76
- 239000011521 glass Substances 0.000 claims description 52
- 239000011347 resin Substances 0.000 claims description 34
- 229920005989 resin Polymers 0.000 claims description 34
- 239000000853 adhesive Substances 0.000 claims description 33
- 230000001070 adhesive effect Effects 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- -1 when laying Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 7
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- 230000005611 electricity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
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- 230000037452 priming Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The invention discloses a trailing edge splicing method for megawatt wind driven generator blade to assemble a die, comprising the following steps of: designing and manufacturing a rear-edge sticking angle of which the shape is matched with that of the rear edge of the blade according to the shape of the rear edge of the fan; and when the fan blade is subjected to die assembly, two shells of the fan blade can be efficiently stuck by the rear-edge sticking angle, a gap generated when the rear edge of the fan blade of the fan can be reduced, and the sticking intensity of the fan blade is enhanced. The trailing edge splicing method for megawatt wind driven generator blade to assemble a die has the advantage of strong maneuverability and high production efficiency. The prepared megawatt wind driven generator blade is stable, durable and has good quality, and various defects that a sandwich layer needs to be manufactured and the like in the prior art can be overcome.
Description
Technical field
The present invention relates to a kind of preparation method of blade of wind-driven generator, the trailing edge adhering method when being specifically related to a kind of blade of MW class wind turbine matched moulds.
Background technology
Wind energy is as an important branch of new forms of energy, with its cleaning, safe, stable characteristics, paid close attention to widely.The wind-powered electricity generation unit is to be the device of electric energy with wind energy transformation, wherein blade is as one of core component of wind-powered electricity generation unit, its production process directly influences the quality of wind-powered electricity generation unit, and the fast development along with domestic and international MW class blade, the blade generated output is increasing, blade is also more and more longer, and is therefore also more and more high to the requirement of Blade Properties and workmanship.The windward side housing of blade of MW class wind turbine and lee face housing are in the matched moulds process, the local bonding region of trailing edge gap can be greater than design load, this just causes adhesive thickness can surpass scope of design, thereby the bonding quality of trailing edge can't be guaranteed, and it is bonding just can not directly to adopt adhesive to carry out in this case.The method that adopts both at home and abroad is at present: add " sandwich of layers " at fan blade trailing edge place, and the gap when reducing the trailing edge matched moulds with this, and then carry out bonding.
But there is following shortcoming in the method in fan blade trailing edge interpolation " sandwich of layers " in the prior art:
1. fold appears in the glass cloth of parcel core easily when vacuumizing, and can reduce the adhesive strength of two housings so greatly.
2. in priming by vacuum, " sandwich of layers " regional area down can occur if this situation occurs in sightless zone, also can being reduced the adhesive strength of two housings by the phenomenon of " bag is dead " (glass fibre can not immerse resin).If occur in visibility region, it is repaired the time that needs with long, product quality and production efficiency are lower.
3. make the complex procedures of " sandwich of layers " and have relatively high expectations, required time is longer, and the Production Time of this whole blower fan blade shell that also slowed down simultaneously, production efficiency is lower.
Therefore, on the basis of existing technology necessary, it is higher to research and develop a kind of production efficiency, the high adhering method of trailing edge adhesive strength when fan blade closes film.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiencies in the prior art, provide a kind of production efficiency height, easy to operate, production cost is low, adhesive strength height, the trailing edge adhering method when being applicable to the blade of MW class wind turbine matched moulds.
Technical scheme: for realizing purpose of the present invention, the trailing edge adhering method during blade of MW class wind turbine matched moulds provided by the invention may further comprise the steps:
A, fan blade trailing edge paste the preparation at angle: at the fixing thick auxiliary core of 20mm of fan blade SS face-piece body trailing edge bonding region, cover one deck vacuum bag film (the present invention's covering vacuum bag film on auxiliary core can avoid glass fabric and mould to bond together) then above the auxiliary core on fan blade SS face-piece body, on the vacuum bag film, paste the glass fabric that resin is crossed in preimpregnation then over, lay release cloth on the glass fabric surface then; Then the bonding region of fan blade PS face-piece body correspondence directly paste upper and lower layer all post release cloth infiltration the glass fabric of resin (the present invention all pastes release cloth at the upper and lower layer of glass fabric and is conducive to the follow-up demoulding, prevent glass fabric and case bonding), standby;
After treating that preimpregnation on the fan blade SS face-piece body is crossed the glass fabric of resin and glass fabric that resin is crossed in the preimpregnation on the PS face-piece body and solidified, the glass fabric of resin and the glass fabric grinding process that resin is crossed in the preimpregnation on the PS face-piece body are crossed in preimpregnation on the SS face-piece body, making the frp layer at SS face-piece body and PS face-piece end of body edge is 1-2mm, at last with fan blade SS face-piece body and PS face-piece body matched moulds, the two sides is bonded together the glass fabric on SS face-piece body and the PS face-piece body by adhesive, and is standby;
Take off by preimpregnation on the fan blade SS face-piece body and cross the bonding glass steel part of forming of glass fabric that resin is crossed in preimpregnation on the glass fabric of resin and the PS face-piece body, then its convex surface is carried out grinding process, namely get the fan blade trailing edge and paste the angle mould tool, the one side of this mould is convex surface, the projecting surface of pasting the angle mould tool with trailing edge is use face, trailing edge being pasted the use face of angle mould tool handles smooth, release agent application makes die surface form layer protective layer and is easy to the demoulding, paste the angle mould tool according to designing requirement at trailing edge then and make trailing edge stickup angle, standby;
B, fan blade trailing edge are pasted the bonding of angle:
The release cloth of fan blade SS face-piece body bonding region is torn, and clean out, scrape adhesive in this zone, and (the present invention scrapes triangularity with the adhesive on the SS face-piece body bonding region can effectively avoid bonding plane generation cavity when bonding to make adhesive scrape triangularity, guarantee adhesive strength), after trailing edge that above step is prefabricated is pasted angle surface and cleaned out it is bonded on the trailing edge adhesive on the fan blade SS face-piece body, and the trailing edge of pressing repeatedly on the SS face-piece body is pasted the angle, make it to coincide with SS face-piece body, the purpose of doing like this is that trailing edge stickup angle and SS face-piece body are fitted like a glove, correct position, and the adhesive thickness that trailing edge is pasted in angle and the SS face-piece body reaches design thickness (2-10mm scope), also is simultaneously to make trailing edge paste no adhesive cavity between angle and the SS face-piece body; Then trailing edge being pasted the unnecessary adhesive that pushes out in the angle collects, scrape on the fan blade PS face-piece body, the finishing adhesive makes it shape triangular in shape, then with fan blade SS face-piece body and PS face-piece body matched moulds, cling on fan blade SS face-piece body and PS face-piece body thereby make trailing edge paste the angle, finish the fan blade trailing edge and paste the bonding of angle; Obtain fan blade trailing edge matched moulds gap and meet the requirements, bond degree intensity height, anti-shear performance is good, robust watt of class wind turbine blade.
The auxiliary core of angle mould tool use is pasted in the making that such scheme is told about, and is as the stickup thickness of reserving and the frp layer thickness of pasting the angle making.Pasting the angle because of this needs and two case bondings, and the adhesive of stickup all need guarantee certain thickness, so need to reserve; And because the bonding agent standard thickness is 6mm, two bonding thickness of face are 12mm, and the frp layer thickness that the preparation trailing edge is pasted the angle is between 6-10mm, so should select for use the PVC material of 20mm thickness to make by auxiliary core.Other makes this stickup angle, and it needs post-processed, and overlap needs excision, should be than the big 50mm of fan blade trailing edge adhesion width so paste the width of angle mould tool.
As preferred version, trailing edge adhering method during above-described blade of MW class wind turbine matched moulds, the preparation method that described trailing edge is pasted the angle is: get width and length are all pasted angle mould tool 5cm greater than trailing edge glass fabric, then with the glass fabric impregnated with resin, straight being laid on of glass fabric of then preimpregnation being crossed resin applied on the trailing edge stickup angle mould tool of releasing agent, when laying, fiber cloth with the hair roller bubble in the fiber cloth is caught up with to the greatest extent, make the fiber cloth interlayer structure closely knit, zero defect, after treating that the whole layings of fiber cloth are finished, lay release cloth on its surface, after the fiber cloth for the treatment of resin impregnated is then solidified fully, trailing edge is pasted the angle blank break away from trailing edge stickup angle mould tool, paste the size marking pen mark at angle by the trailing edge of demand, excise unnecessary overlap, the finishing cut edge makes the edge not have defectives such as burr and layering, makes to obtain trailing edge stickup angle.The present invention is used for the resin preferred epoxy of preimpregnated glass fibre cloth.
The above-described SS face-piece body windward side housing that is fan blade wherein, PS face-piece body is the lee face housing of fan blade, in the fan blade preparation process, the windward side housing of SS face and the lee face housing matched moulds of PS face need be assembled.
Beneficial effect: the trailing edge adhering method during blade of MW class wind turbine matched moulds provided by the invention is compared with prior art and is had the following advantages:
Trailing edge adhering method during blade of MW class wind turbine matched moulds provided by the invention, workable, the production efficiency height, especially design and produce a kind of trailing edge stickup angle of auxiliary bonding usefulness according to the design feature of fan blade trailing edge, the gap in the time of can reducing fan blade trailing edge matched moulds by this trailing edge stickup angle, thus can efficiently two case bondings of fan blade be got up, the adhesive strength height, preparation-obtained blade of MW class wind turbine is firm, and is durable, and quality is good.
Description of drawings
Fig. 1 is the first process schematic diagram at preparation trailing edge bonding angle in the method provided by the invention.
Fig. 2 is the second process schematic diagram at preparation trailing edge bonding angle in the method provided by the invention.
Fig. 3 is the 3rd process schematic diagram at preparation trailing edge bonding angle in the method provided by the invention.
Fig. 4 is the 4th process schematic diagram at preparation trailing edge bonding angle in the method provided by the invention.
The structural representation of the glass steel part that Fig. 5 prepares for method provided by the invention.
Fig. 6 is the structural representation of the trailing edge bonding angle mould tool for preparing in the method provided by the invention.
Fig. 7 is that the blower fan trailing edge is pasted the first bonding process schematic diagram of angle in the method provided by the invention.
Fig. 8 is that the blower fan trailing edge is pasted the second bonding process schematic diagram of angle in the method provided by the invention.
Fig. 9 is that the blower fan trailing edge is pasted the 3rd bonding process schematic diagram of angle in the method provided by the invention.
Structural representation when Figure 10 pastes for blower fan trailing edge in the method provided by the invention that the angle is bonding finishes.
The specific embodiment:
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Trailing edge adhering method during a kind of blade of MW class wind turbine matched moulds, it may further comprise the steps:
A, fan blade trailing edge are pasted the preparation at angle: as shown in Figure 1, at fan blade SS face-piece body (1) the trailing edge bonding region auxiliary core (2) that fixedly 20mm is thick, cover one deck vacuum bag film (3) above the auxiliary core (2) on fan blade SS face-piece body (1), on vacuum bag film (3), paste the glass fabric (4) that resin is crossed in preimpregnation then over, cross glass fabric (4) the surface laying release cloth of resin then in preimpregnation, as shown in Figure 2; Directly paste the glass fabric (6) that resin is crossed in preimpregnation that upper and lower layer all posts release cloth at the corresponding bonding region of fan blade PS face-piece body (5) then, as shown in Figure 3; Standby;
After treating that preimpregnation on the fan blade SS face-piece body (1) is crossed the glass fabric (4) of resin and PS face-piece body (5) and gone up glass fabric (6) that preimpregnation crosses resin and solidify, with glass fabric (4) and glass fabric (6) grinding process, making the edge glass steel layer of SS face-piece body (1) and PS face-piece body (5) end is 1-2mm, at last with fan blade SS face-piece body (1) and PS face-piece body (5) matched moulds, the two sides housing is bonded together glass fabric (4) and glass fabric (6) by adhesive, as shown in Figure 4, standby;
Take off by the preimpregnation on the fan blade SS face-piece body (1) and cross the glass fabric (4) of resin and the bonding glass steel part of forming of glass fabric (6) that resin is crossed in the preimpregnation on the PS face-piece body (5), as shown in Figure 5; Then its convex surface is carried out grinding process, namely get the fan blade trailing edge and paste the angle mould tool, as shown in Figure 6.The one side of this mould is convex surface, paste angle mould tool convex surface at the fan blade trailing edge then and paste glass fabric making trailing edge stickup angle, specific practice is: the projecting surface of pasting the angle mould tool with trailing edge is use face, handle the use face of mould smooth, materials such as release agent application make die surface form layer protective layer and are easy to the demoulding, paste glass fabric according to designing requirement at mould then and make trailing edge stickup angle, concrete operation method is: get width and length are all pasted angle mould tool 5cm greater than trailing edge glass fabric, then with the glass fabric impregnated with resin, straight being laid on of glass fabric of then preimpregnation being crossed resin applied on the trailing edge stickup angle mould tool of releasing agent, when laying, fiber cloth with the hair roller bubble in the fiber cloth is caught up with to the greatest extent, make the fiber cloth interlayer structure closely knit, zero defect, after treating that the whole layings of fiber cloth are finished, lay release cloth on its surface, after the fiber cloth for the treatment of resin impregnated is then solidified fully, trailing edge is pasted the angle blank break away from trailing edge stickup angle mould tool, paste the size marking pen mark at angle by the trailing edge of demand, excise unnecessary overlap, the finishing cut edge, make the edge not have defectives such as burr and layering, obtain trailing edge and paste angle (7), standby;
B, fan blade trailing edge are pasted the bonding of angle: the release cloth of fan blade SS face-piece body (1) bonding region is torn, and clean out, scrape adhesive in this zone, and make adhesive scrape triangularity, as shown in Figure 7, trailing edge that above step is prefabricated is pasted angle (7) removing surface and it is bonded on the trailing edge adhesive on the fan blade SS face-piece body (1) after clean, as shown in Figure 8, and the trailing edge of pressing repeatedly on the SS face-piece body (1) pastes angle (7), makes trailing edge paste angle (7) and fits, do not have the adhesive cavity fully with SS face-piece body (1); Then trailing edge being pasted the unnecessary adhesive that angle (7) extruding comes out collects, scrape on the fan blade PS face-piece body (5), as adding a little adhesives inadequately again, whole adhesive makes it shape triangular in shape, then with fan blade SS face-piece body (1) and PS face-piece body (5) matched moulds, as shown in Figure 9, cling on fan blade SS face-piece body (1) and PS face-piece body (5) thereby make trailing edge paste angle (7), finish the fan blade trailing edge and paste the bonding of angle (7).As shown in figure 10, obtain fan blade trailing edge matched moulds gap and meet the requirements, bond degree intensity height, anti-shear performance is good, robust watt of class wind turbine blade.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. the trailing edge adhering method during a blade of MW class wind turbine matched moulds is characterized in that may further comprise the steps:
A, fan blade trailing edge are pasted the preparation at angle: at fan blade SS face-piece body (1) the trailing edge bonding region auxiliary core (2) that fixedly 20mm is thick, cover one deck vacuum bag film (3) above the auxiliary core (2) on fan blade SS face-piece body (1), on vacuum bag film (3), paste the glass fabric (4) that resin is crossed in preimpregnation then over, lay release cloth on glass fabric (4) surface then; Directly paste the glass fabric (6) that resin is crossed in preimpregnation that upper and lower layer all posts release cloth at the corresponding bonding region of fan blade PS face-piece body (5) then, standby;
After treating that preimpregnation on the fan blade SS face-piece body (1) is crossed the glass fabric (4) of resin and PS face-piece body (5) and gone up glass fabric (6) that preimpregnation crosses resin and solidify, the glass fabric (4) of resin is crossed in preimpregnation and glass fabric (6) that resin is crossed in preimpregnation solidifies the back grinding process, making the thickness of the frp layer of SS face-piece body (1) and PS face-piece body (5) end edge is 1-2mm, at last with fan blade SS face-piece body (1) and PS face-piece body (5) matched moulds, the two sides is bonded together glass fabric (4) and glass fabric (6) by adhesive, and is standby;
Take off by the last preimpregnation of fan blade SS face-piece body (1) and cross the glass fabric (4) of resin and the bonding glass steel part of forming of glass fabric (6) that resin is crossed in the last preimpregnation of PS face-piece body (5), then its convex surface is carried out grinding process, namely get the fan blade trailing edge and paste the angle mould tool, the one side of this mould is convex surface, the projecting surface of pasting the angle mould tool with trailing edge is use face, trailing edge being pasted the use face of angle mould tool handles smooth, release agent application, paste the angle mould tool according to designing requirement at trailing edge then and make trailing edge stickup angle (7), standby;
B, fan blade trailing edge are pasted the bonding of angle: the release cloth of fan blade SS face-piece body (1) bonding region is torn, and clean out, scrape adhesive in this zone, and make adhesive scrape triangularity, trailing edge that above step is prefabricated is pasted angle (7) removing surface and it is bonded on the trailing edge adhesive on the fan blade SS face-piece body (1) after clean, and the trailing edge of pressing repeatedly on the SS face-piece body (1) pastes angle (7), makes trailing edge paste angle (7) and fits, do not have the adhesive cavity fully with SS face-piece body (1); Then trailing edge being pasted the unnecessary adhesive that angle (7) extruding comes out collects, scrape on the fan blade PS face-piece body (5), and the adhesive on the finishing PS face-piece body (5) makes it shape triangular in shape, then with fan blade SS face-piece body (1) and PS face-piece body (5) matched moulds, cling on fan blade SS face-piece body (1) and PS face-piece body (5) thereby make trailing edge paste angle (7), finish the fan blade trailing edge and paste the bonding of angle (7).
2. the trailing edge adhering method during blade of MW class wind turbine matched moulds according to claim 1, it is characterized in that: the preparation method that described trailing edge is pasted the angle is: get width and length are all pasted angle mould tool 5cm greater than trailing edge glass fabric, then with the glass fabric impregnated with resin, straight being laid on of glass fabric of then preimpregnation being crossed resin applied on the trailing edge stickup angle mould tool of releasing agent, when laying, fiber cloth with the hair roller bubble in the fiber cloth is caught up with to the greatest extent, make the fiber cloth interlayer structure closely knit, zero defect, after treating that the whole layings of fiber cloth are finished, lay release cloth on its surface, after the fiber cloth for the treatment of resin impregnated is then solidified fully, trailing edge is pasted the angle blank break away from trailing edge stickup angle mould tool, paste the size marking pen mark at angle by the trailing edge of demand, excise unnecessary overlap, make obtaining trailing edge stickup angle (7).
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| CN 201110159962 CN102320142B (en) | 2011-06-15 | 2011-06-15 | Trailing edge splicing method for megawatt wind driven generator blade to assemble die |
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| CN 201110159962 CN102320142B (en) | 2011-06-15 | 2011-06-15 | Trailing edge splicing method for megawatt wind driven generator blade to assemble die |
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| CN113002015A (en) * | 2021-02-26 | 2021-06-22 | 上海电气风电集团股份有限公司 | Structure of wind power blade trailing edge core material and preparation method thereof |
| CN113858658B (en) * | 2021-09-30 | 2023-05-16 | 中材科技（酒泉）风电叶片有限公司 | Trimming-free method for trailing edge flash of wind power blade |
| CN114311736A (en) * | 2021-11-17 | 2022-04-12 | 洛阳双瑞风电叶片有限公司 | Method for reducing extrusion capacity of die assembly adhesive for wind power blade |
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| CN102320142A (en) | 2012-01-18 |
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