CN102226446B - Method for preparing megawatt fan blade shear web and auxiliary bonding angle thereof - Google Patents
Method for preparing megawatt fan blade shear web and auxiliary bonding angle thereof Download PDFInfo
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- CN102226446B CN102226446B CN201110154738XA CN201110154738A CN102226446B CN 102226446 B CN102226446 B CN 102226446B CN 201110154738X A CN201110154738X A CN 201110154738XA CN 201110154738 A CN201110154738 A CN 201110154738A CN 102226446 B CN102226446 B CN 102226446B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a method for preparing a megawatt fan blade shear web and an auxiliary bonding angle thereof. The preparation method has the following steps: fixing a template and vacuum materials by adopting a shear web special mold and a shear web auxiliary bonding angle; constructing a seal device by adopting a vacuum thin film; pouring resin after vacuumization; heating the solidified resin and obtaining the shear web and the auxiliary bonding angle thereof through integrated molding after demoulding. The method for preparing the megawatt fan blade shear web and the auxiliary bonding angle thereof provided by the invention has high maneuverability, short preparation cycle, high production efficiency and is environmentally-friendly, the prepared shear web and the auxiliary bonding angle thereof have high quality, and multiple defects by adopting manual pasting and bonding in the prior art can be made up.
Description
Technical field
The present invention relates to a kind of preparation method of pneumatic equipment blades made, be specifically related to the preparation method of a kind of megawatt fan blade shear web and auxiliary bonding angle thereof.
Background technique
Along with the development at home of MW class blade, the blade generated output is increasing, and blade is also more and more longer, and is therefore also more and more high to the requirement of Blade Properties and workmanship.For the pneumatic equipment blades made that Windnovation Chevron Research Company (CRC) designs and develops, in the shear web working process, all require to make auxiliary bonding angle, to improve adhesion width and the adhesive property of shear web.At present the existing production method of shear web auxiliary bonding angle is divided into two kinds: the one, after shear web completes, auxiliary bonding angle is made of the manual preimpregnation of cloth, then according to the auxiliary bonding angle demand angle, with its manual pasting in the shear web side; The 2nd, after shear web completes, the auxiliary bonding angle of making in advance is adhered to it on shear web with adhesive glue.
All there is the shortcoming of following several respects in these two kinds of methods:
1, complex manufacturing process, fabrication cycle is long, and is low to the mould utilization ratio;
2, on-the-spot dirty and messy, the shear web surface quality is difficult to assurance, and the long-pending piece of resin or adhesive is more;
3, improve fabricating cost, manual pasting or bonding extra resin or the adhesive of all needing;
4, post-processed difficulty, in the manual pasting process, the smooth surface that the generation more or less of resin or adhesive is more is in bonding region, needs grinding process.
And in the shear web working process, preparation process is complicated in the prior art, and cost is higher, and manufacturing efficiency is low, and the up-to-standard rate of product is low.
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 that a kind of manufacturing cycle is short, manufacturing efficiency is high, easy to operate, cost is low, the megawatt fan blade shear web that the quality of the product for preparing is high and the preparation method of auxiliary bonding angle thereof.
Technological scheme: for realizing purpose of the present invention, the preparation method of megawatt fan blade shear web provided by the invention and auxiliary bonding angle thereof may further comprise the steps:
(a) at first get shear web mould, the removing surface of shear web mould is clean, coat remover, then fibre cloth under laying on the surface of shear web mould, and then lay the shear web core in the lower fibre cloth of the upper surface of shear web mould, and then laying fibre cloth with the shear web mould surrounded surface on the shear web core, the internal surface of shear web auxiliary bonding angle fixed die plate is laid demoulding cloth, then be placed on the shear web mould base plate, then make shear web auxiliary bonding angle fixed die plate be adjacent to a side of shear web mould, then the auxiliary bonding angle fibre cloth is laid by the corner between shear web auxiliary bonding angle fixed die plate and shear web mould;
(b) then lay vacuum material in upper fibre cloth and bonding angle fibre cloth, described vacuum material by be positioned at undermost demoulding cloth, hole film in the middle of being positioned at and the resin flow-guiding screen that is positioned at the superiors consist of, be provided with guiding gutter at the resin flow-guiding screen, then with vacuum film with whole shear web mould, lower fibre cloth, shear web core, upper fibre cloth, shear web auxiliary bonding angle fixed die plate, release cloth, bonding angle fibre cloth, vacuum material and guiding gutter all seal;
(c) then to vacuumizing in the vacuum film, pressure in the vacuum film reaches negative barometric pressure, begin perfusion resin in the vacuum film, after resin enters in the vacuum film, be distributed on the resin flow-guiding screen by guiding gutter first, then around resin process resin flow-guiding screen and hole film are evenly distributed in the vacuum film, be immersed on fibre cloth, lower fibre cloth and the auxiliary bonding angle fibre cloth, after resin is evenly distributed in vacuum film; Be heated to 50 to 60 ℃, make the resin solidification of vacuum film perfusion, then slough the devices such as shear web mould, shear web auxiliary bonding angle fixed die plate and vacuum material, obtain integrated blade shear web and auxiliary bonding angle thereof.
As preferred version, the preparation method of above-described megawatt fan blade shear web and auxiliary bonding angle thereof, the lower fibre cloth described in the step (a), upper fibre cloth and auxiliary bonding angle fibre cloth can be made of multi-layer fiber cloth according to actual needs.
The preparation method of megawatt fan blade shear web of the present invention and auxiliary bonding angle thereof makes shear web and shear web mould demoulding step (a) can make things convenient for moulding after remover is coated on the surface of shear web mould after; Described shear web core is preferably the slab construction of being made by materials such as PVC, is wrapped in the mechanical strength that can increase shear web in the resin; The purpose of laying demoulding cloth at the internal surface of shear web auxiliary bonding angle fixed die plate is: conveniently slough shear web auxiliary bonding angle fixed die plate after making moulding, do not need the shear web side to be processed again; As preferred version, the described shear web auxiliary bonding angle of step (a) fixed die plate is the thick glass epoxy of 5 ~ 8mm, and the lower end is connected with fixing bottom-plate, conveniently is fixed on the shear web mould base plate.
As preferred version, the preparation method of above-described megawatt fan blade shear web and auxiliary bonding angle thereof, step (b) is laid vacuum material in upper fibre cloth and bonding angle fibre cloth, described vacuum material by be positioned at undermost demoulding cloth, hole film in the middle of being positioned at and the resin flow-guiding screen that is positioned at the superiors consist of, and be provided with guiding gutter at the resin flow-guiding screen.Wherein the demoulding cloth of lower floor is conducive to after the moulding shear web and auxiliary bonding angle thereof be separated with vacuum material; Described hole film is conducive to make things convenient for the resin flow-guiding screen of removing the upper strata after the moulding between demoulding cloth and resin flow-guiding screen, can not impact product surface; Described resin flow-guiding screen is conducive to the resin Quick uniform and distributes, and prevents that resin distribution is inhomogeneous, and local accumulation becomes piece, thereby can improve the quality of finished product.
As preferred version, the preparation method of above-described megawatt fan blade shear web and auxiliary bonding angle thereof, step (c) at first vacuumizes vacuum film, make to reach negative pressure state in the vacuum film, be conducive to like this resin and enter, the present invention is preferred through different vacuum values, the result shows when the pressure in the vacuum film reaches a negative atmospheric value, the resin admission velocity is better, can not affect too slowly manufacturing efficiency, also can not affect too soon quality of product; The present invention is which has resin and enters the hole at vacuum film, resin enters the hole and guiding gutter is connected, when entering the hole by the resin on the vacuum film, resin enters guiding gutter, and then be distributed on the resin flow-guiding screen, around just can being evenly distributed in the vacuum film behind the resin process resin flow-guiding screen like this, resin fully is immersed on lower fibre cloth, upper fibre cloth and the auxiliary bonding angle fibre cloth, fully contacts and after solidifying, just can obtain shear web and the auxiliary bonding angle thereof of required form when resin with fibre cloth.
Beneficial effect: the preparation method of megawatt fan blade shear web provided by the invention and auxiliary bonding angle thereof is compared with existing technology and has the following advantages:
The preparation method of megawatt fan blade shear web provided by the invention and auxiliary bonding angle thereof, workable, manufacturing cycle is short, and manufacturing efficiency is high; In the whole preparation process, all adopt the mode of priming by vacuum to carry out, clean environment, all sealings in the resin curing process, more environmental protection; Adopt preparation method provided by the invention can one-body moldedly prepare shear web and auxiliary bonding angle thereof, can avoid prior art to adopt the method for hand paste, gluing to prepare shear web and auxiliary bonding angle thereof, the products obtained therefrom quality is high, and can greatly reduce production costs.
Description of drawings
Fig. 1 is the shear web for preparing by method provided by the invention and the structural representation of auxiliary bonding angle thereof.
Fig. 2 be the preparation mould of shear web used in the method provided by the invention and spread fibre cloth and the shear web core after structural representation.
Fig. 3 is shear web mould and shear web auxiliary bonding angle fixed die plate package assembly schematic diagram used in the method provided by the invention.
Fig. 4 is the cross section structure schematic diagram of vacuum material in the method provided by the invention.
Fig. 5 is the package assembly schematic diagram of whole device used in the method provided by the invention.
Embodiment:
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiments 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 limited range to the modification of the various equivalent form of values of the present invention.
The preparation method of a kind of megawatt fan blade shear web and auxiliary bonding angle thereof, it may further comprise the steps:
(a) get shear web mould (1), remover is coated on surface at shear web mould (1), clean out, then fibre cloth (2) under laying on the surface of shear web mould (1), and then lay shear web core (3) in the lower fibre cloth (2) of the upper surface of shear web mould (1), and then at shear web core (3) upper and shear web mould (1) surrounded surface is laid upper fibre cloth (4), as shown in Figure 2, shear web auxiliary bonding angle fixed die plate (5) is placed on shear web mould (1) base plate, internal surface at shear web auxiliary bonding angle fixed die plate (5) is laid demoulding cloth (6), then make shear web auxiliary bonding angle fixed die plate (5) be adjacent to a side of shear web mould (1), then auxiliary bonding angle fibre cloth (7) is laid by the corner between shear web auxiliary bonding angle fixed die plate (5) and shear web mould (1), as shown in Figure 3;
(b) then lay vacuum material (8) in upper fibre cloth (4) and bonding angle fibre cloth (7), described vacuum material (8) is by being positioned at undermost demoulding cloth (81), hole film (82) in the middle of being positioned at and be positioned at resin flow-guiding screen (83) formation of the superiors, as shown in Figure 4, be provided with guiding gutter (9) at resin flow-guiding screen (83), then use vacuum film (10) with whole shear web mould (1), lower fibre cloth (2), shear web core (3), upper fibre cloth (4), shear web auxiliary bonding angle fixed die plate (5), release cloth (6), bonding angle fibre cloth (7), vacuum material (8) and guiding gutter (9) be sealing all, as shown in Figure 5;
(c) then to vacuumizing in the vacuum film (10), pressure in vacuum film (10) reaches negative barometric pressure, begin the interior perfusion resin of vacuum film (10), after resin enters in the vacuum film (10), be distributed on the resin flow-guiding screen (83) by guiding gutter (9) first, then around resin process resin flow-guiding screen (83) and hole film (82) are evenly distributed in the vacuum film (10), and be immersed in lower fibre cloth (2), on upper fibre cloth (4) and the auxiliary bonding angle fibre cloth (7), after resin is evenly distributed in vacuum film (10); Be heated to 50 to 60 ℃, make the resin solidification of vacuum film (10) perfusion, then slough the devices such as shear web mould (1), shear web auxiliary bonding angle fixed die plate (5) and vacuum material (8), obtain integrated blade shear web and auxiliary bonding angle thereof, its structure as shown in Figure 1.
The above only is preferred implementation 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. method for preparing megawatt fan blade shear web and auxiliary bonding angle thereof is characterized in that may further comprise the steps:
(a) at first get shear web mould (1), remover is coated on surface at shear web mould (1), clean out, then fibre cloth (2) under laying on the surface of shear web mould (1), and then lay shear web core (3) in the lower fibre cloth (2) of the upper surface of shear web mould (1), and then at shear web core (3) upper and shear web mould (1) surrounded surface is laid upper fibre cloth (4), shear web auxiliary bonding angle fixed die plate (5) is placed on shear web mould (1) base plate, whole internal surface at shear web auxiliary bonding angle fixed die plate (5) is laid demoulding cloth (6), then make shear web auxiliary bonding angle fixed die plate (5) be adjacent to a side of shear web mould (1), then auxiliary bonding angle fibre cloth (7) is laid by the corner between shear web auxiliary bonding angle fixed die plate (5) and shear web mould (1);
(b) then lay vacuum material (8) in upper fibre cloth (4) and bonding angle fibre cloth (7), described vacuum material (8) is by being positioned at undermost demoulding cloth (81), hole film (82) in the middle of being positioned at and be positioned at resin flow-guiding screen (83) formation of the superiors, be provided with guiding gutter (9) at resin flow-guiding screen (83), then use vacuum film (10) with whole shear web mould (1), lower fibre cloth (2), shear web core (3), upper fibre cloth (4), shear web auxiliary bonding angle fixed die plate (5), release cloth (6), auxiliary bonding angle fibre cloth (7), vacuum material (8) and guiding gutter (9) be sealing all;
(c) then to vacuumizing in the vacuum film (10), pressure in vacuum film (10) reaches negative barometric pressure, begin the interior perfusion resin of vacuum film (10), after resin enters in the vacuum film (10), be distributed on the resin flow-guiding screen (83) by guiding gutter (9) first, then around resin is evenly distributed in the vacuum film (10) through resin flow-guiding screen (83), be immersed in lower fibre cloth (2), on upper fibre cloth (4) and the auxiliary bonding angle fibre cloth (7), after resin is evenly distributed in vacuum film (10); Be heated to 50 to 60 ℃, make the resin solidification of vacuum film (10) perfusion, then slough shear web mould (1), shear web auxiliary bonding angle fixed die plate (5) and vacuum material (8) device, obtain integrated blade shear web and auxiliary bonding angle thereof.
2. the method for preparing megawatt fan blade shear web and auxiliary bonding angle thereof according to claim 1, it is characterized in that: step (a) described shear web auxiliary bonding angle fixed die plate (5) is the thick glass epoxy of 5 ~ 8mm, and the lower end is connected with fixing bottom-plate.
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| CN201110154738XA CN102226446B (en) | 2011-06-10 | 2011-06-10 | Method for preparing megawatt fan blade shear web and auxiliary bonding angle thereof |
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Families Citing this family (7)
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| CN102963007A (en) * | 2012-11-22 | 2013-03-13 | 昆山华风风电科技有限公司 | Novel manufacturing process for front edge of wind power generation blade |
| CN103395213A (en) * | 2013-07-30 | 2013-11-20 | 无锡乘风新能源设备有限公司 | Manufacturing process of megawatt blade tail edge splicing angle |
| CN106113528B (en) * | 2016-06-23 | 2018-04-06 | 连云港中复连众复合材料集团有限公司 | The preparation method of fan blade of wind generating set web |
| CN106182828B (en) * | 2016-09-29 | 2018-11-27 | 北京金风科创风电设备有限公司 | A kind of blade " work " belly board mold and preparation method thereof |
| CN106671450B (en) * | 2016-12-27 | 2019-04-09 | 吉林重通成飞新材料股份公司 | A kind of wind electricity blade web exempts to cut production method |
| 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 |
| CN110774617A (en) * | 2019-12-03 | 2020-02-11 | 东方电气（天津）风电叶片工程有限公司 | Integrated forming device for composite material wind power blade web bonding angle |
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| CN100526051C (en) * | 2007-01-12 | 2009-08-12 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing blades of large-scale wind driven generator |
| CN101186116A (en) * | 2007-11-23 | 2008-05-28 | 上海麦登复合材料有限公司 | Production technology for fan blade |
| ES2388756T3 (en) * | 2008-04-03 | 2012-10-18 | Siemens Aktiengesellschaft | Mold and method for vacuum assisted resin transfer molding |
| ATE516947T1 (en) * | 2008-05-05 | 2011-08-15 | Siemens Ag | METHOD FOR PRODUCING WIND TURBINE BLADES USING COMPOSITE MATERIALS |
| CN101704300A (en) * | 2009-11-12 | 2010-05-12 | 江苏九鼎新材料股份有限公司 | Integral one-step molding technique of wind power blade |
| CN101749194B (en) * | 2009-12-11 | 2011-09-14 | 重庆通用工业(集团)有限责任公司 | Wind turbine blade for large-scale wind generating set, and molding method thereof |
| CN101797802B (en) * | 2009-12-28 | 2013-01-02 | 连云港中复连众复合材料集团有限公司 | One-step forming process of multi-layered shear web of MW wind turbine blade |
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