CN102114710A - Method for preparing large-scale composite-material aerogenerator blade - Google Patents

Method for preparing large-scale composite-material aerogenerator blade Download PDF

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Publication number
CN102114710A
CN102114710A CN2009102277357A CN200910227735A CN102114710A CN 102114710 A CN102114710 A CN 102114710A CN 2009102277357 A CN2009102277357 A CN 2009102277357A CN 200910227735 A CN200910227735 A CN 200910227735A CN 102114710 A CN102114710 A CN 102114710A
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China
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crossbeam
blade
resin
choked flow
blade shell
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CN2009102277357A
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CN102114710B (en
Inventor
史俊虎
余启勇
裴鹏宇
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Luoyang Sunrui Wind Turbine Bladeltd
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Luoyang Sunrui Wind Turbine Bladeltd
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Publication of CN102114710A publication Critical patent/CN102114710A/en
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Abstract

The invention relates to the molding technology of nonmetal composite materials, and provides a method for preparing large-scale composite-material aerogenerator blades; the method mainly relates to the following steps: preparing an upper and a lower housing of the blade; directly laying a crossbeam (3) in the blade housing body when laying the blade housing; completing the preparation of the blade housing by an integral forming process of the crossbeam (3) and the blade housing; during vacuum perfusion, setting different rapid diversion zones and flow obstruction zones (7) according to the change of the permeation rate of a resin in fibers so as to allow the resin to infiltrate the whole laid layer more rapidly and much better; laying a diversion net on the upper surface of the laid blade housing; setting a certain interval between diversion media for the arrangement of the obstruction zones (7), and laying a flow obstruction belt (9) on the diversion media where flow obstruction is needed; or directly laying the flow obstruction belt on the upper surface of the blade housing; adding continuous strand mats into the interior part of the crossbeam layer so as to accelerate the permeation rate of the resin in the layer.

Description

A kind of method for preparing the large-scale composite material blade of wind-driven generator
Technical field
The invention belongs to forming materials technology field, relate to the forming technique of nonmetallic composite, mainly propose a kind of method for preparing the large-scale composite material blade of wind-driven generator.
Background technology
The production technology simplification of large-scale composite material blade of wind-driven generator (abbreviation wind electricity blade) relates to blade cost and working strength of workers, is the thing that the blade production technology at first it is also noted that.Present most of blade of wind-driven generator, especially large-scale blade still adopts multistep processes moulding process (twice or twice above composite material process planning), the upper and lower shell (blade shell) and keel girder (shear web) and the crossbeam (also claiming the beam cap) that promptly prepare earlier blade respectively adopt technologies such as gluing, hand paste to make it to be combined into an integral body then.Can adopt methods such as hand paste, extruding or priming by vacuum during the independent moulding of beam cap, controllability is stronger, operation easily, but big beam mould and operation have been increased, the blade cost is risen, it is more to expend man-hour, and the interface bond strength of crossbeam and other shop layers is reduced, and is unfavorable for the control of wind electricity blade production efficiency and quality.If adopt the method for open hand pasting forming to make the crossbeam prefabricated component, the pollution index height, labor strength is bigger.
It is Integratively formed to propose composite material blade in the patent " Large-scale composite wind turbine blades and its preparation methods " (number of patent application 200510023488.0), but the technology difference of using in this method and the present most of enterprise is bigger, is difficult for implementing.Nearest one piece of domestic patent (application number: the composite material blade technology of preparing of Jie Shaoing 200810117093.0 1 kinds of composite mold closing one-shot forming techniques), it is the blade mould-closing bag-moulding one-shot forming technique, this technology can reduce the poison gas discharge rate, and outside dimension is accurate in the production efficiency height, goods, but equipment investment is big, require to make air bag, technology is comparatively complicated, fiber alignment control difficulty, the technical issues that need to address are also a lot, are difficult in a short time realize.At present, more feasible method is still by the multistep processes moulding progressively excessive to the mold closing one-shot forming, reduces the step of multistep processes, thereby finally realizes the mold closing one-shot forming of large-scale wind electricity blade.
Summary of the invention
The present invention proposes a kind of method for preparing the large-scale composite material blade of wind-driven generator, and its purpose is to simplify the production technology of blade, strengthens the bond strength of crossbeam and blade shell, reduces blade interior stress, better controls the quality and the production cost of blade.
The present invention finishes the technical scheme that its invention task taked: the method that adopts vacuum assisted resin infusion, by crossbeam and the integrated technology of blade shell, the shop layer of crossbeam participates in the process of deployment of blade shell, the shop layer work that is blade shell has comprised crossbeam, when the laying of blade shell, directly in blade shell, lay crossbeam; Overall perfusion makes crossbeam and blade shell one-body molded under vacuum state; When priming by vacuum, the variation of infiltration rate in fiber is provided with different quick water conservancy diversion districts and choked flow district according to resin, so that the whole shop of the infiltration that resin can be faster and better layer; Blade shell divides the making respectively of upper and lower shell (blade shell) and keel girder (shear web), with the involutory connection of blade upper and lower casing, and keel girder (shear web) is provided with is installed in the blade upper and lower casing, constitute the blade of whole composite material wind-driven generator.The present invention relates generally to the making of the upper and lower shell of blade; Wherein, the production method of the upper and lower shell of blade is identical promptly when the laying of blade enclosure, directly lays crossbeam in the blade enclosure body; Overall perfusion moulding blade enclosure body under vacuum state; When vacuum infusion molding, the upper and lower shell body of the blade top of taking to finish in laying is provided with quick water conservancy diversion district and choked flow district, so that the whole shop of the infiltration that resin can be faster and better layer; Fast the water conservancy diversion district is that permeable medium constitutes, as laying the water conservancy diversion net at the upper end face of blade enclosure body or other plays the parts of guide functions; The crossbeam setting of laying in the corresponding blade shell in the choked flow district of blade shell upper end face promptly is being provided with the choked flow district with the corresponding blade shell upper end face in big beam width two ends; This be because, crossbeam generally adopts unidirectional fibre to make, the horizontal infiltration resistance of resin in fiber is bigger, but the flow resistance in permeable medium is little, if not being provided with the choked flow district, the vertical fibers direction can not cause resin only to flow on the surface of permeable medium and fiber, because crossbeam unidirectional cloth shop layer is very thick, resin is difficult to be penetrated into fibrous inside, thereby not saturating dried district or hickie occur soaking into.
Being provided with of described choked flow district can be adopted the mode that keeps at a certain distance away between the permeable medium, and the interval between the permeable medium constitutes the choked flow district; Being about to permeable medium is positioned at the blade shell upper end face and makes with the corresponding blade shell upper end face in beam width two ends greatly and have permeable medium, described permeable medium keeps at a certain distance away between corresponding to the other end of crossbeam width and adjacent permeable medium, spacing distance need or be determined according to the number of plies of glass cloth the hardening time of thickness and resin, change the difference of resin along machine direction and vertical fibers direction infiltration rate, thereby play the effect of choked flow, make the resin flow direction become top-down fiber pervasion process by lateral flow; Also can spread a choked flow zone in the position that needs choked flow on permeable medium, promptly lay choked flow zone at the other end corresponding to the crossbeam width, choked flow zone is vertically corresponding with the other end of crossbeam width; Adhesive tape soft under the effect of vacuum pressure is embedded in the grid of permeable medium, thereby plays the effect of choked flow, makes the resin flow direction become top-down fiber pervasion process by lateral flow; Also choked flow zone can be laid immediately on the upper end face of blade shell.Another mode is at the inner continuous felt that adds suitable thickness of crossbeam shop layer, accelerates resin infiltration rate therein.
The large-scale composite material fan blade here mainly is made up of fiber and resin, and fiber cloth comprises carbon fiber, glass fibre, and resin comprises unsaturated polyester resin, epoxy resin; The composite crossbeam generally is made of unidirectional fibre cloth.
The invention has the beneficial effects as follows: adopt crossbeam, the integrated technology of housing to make the large scale wind power machine blade, saved the mould of crossbeam, saved the making finished product, and the bond strength of crossbeam and housing is improved, reduced man-hour simultaneously, as the lifting and the location of having saved the crossbeam prefabrication, improved the production efficiency of large scale wind power machine blade.
Description of drawings
Fig. 1 is the structural representation of blade shell (upper and lower shell).
The setting in choked flow district and crossbeam corresponding relation schematic diagram when Fig. 2 is form.
Among the figure; 1, blade profile, 2, blade inlet edge, 3, the crossbeam in the blade, 4, trailing edge, 5, blade perfusion injected rubber hose, 6, gum-injecting port, 7, the choked flow zone of resin flows, 8, permeable medium, 9, choked flow zone.
The specific embodiment
In conjunction with the accompanying drawings and embodiments the present invention is illustrated, but does not constitute any limitation of the invention.
As shown in Figure 1 and Figure 2, blade shell divides upper and lower shell (blade shell) and keel girder (shear web), these a few part split productions; With the involutory connection of blade upper and lower casing, and keel girder (shear web) is provided with is installed in the blade upper and lower casing, constitute the blade of whole composite material wind-driven generator.The present invention relates generally to the making of the upper and lower shell of blade; Wherein, the production method of the upper and lower shell of blade is identical promptly when the laying of blade enclosure, directly lays crossbeam in the blade enclosure body; Adopt the method for vacuum assisted resin infusion,, finish the making of blade shell by crossbeam and the integrated technology of blade shell.The shop layer of crossbeam participates in the process of deployment of blade shell, i.e. the shop layer work of blade shell has comprised crossbeam, when the laying of blade shell, directly lays crossbeam in blade shell; Promptly at the sheet of laying blade shell and small pieces during to middle bed thickness, (thickness of laying small pieces that small pieces are laid in the both sides of crossbeam earlier is identical with the thickness of laying crossbeam), lay crossbeam in the width middle part of laying blade shell, re-lay blade shell to shop layer and finish; Overall perfusion makes crossbeam and blade shell one-body molded under vacuum state; When priming by vacuum, the variation of infiltration rate in fiber is provided with different quick water conservancy diversion districts and choked flow district according to resin, so that the whole shop of the infiltration that resin can be faster and better layer; Lay the water conservancy diversion net at the blade shell upper face of being laid, constitute quick water conservancy diversion district; The water conservancy diversion net correspondence of the blade shell upper face that is laid on is positioned at the crossbeam setting of blade shell.Being provided with of described choked flow district can be adopted the mode that keeps at a certain distance away between the permeable medium, and the interval between the permeable medium constitutes the choked flow district; Being about to permeable medium is positioned at the blade shell upper surface and makes and the corresponding blade shell upper end face of crossbeam (width two ends) has permeable medium, described permeable medium keeps at a certain distance away between corresponding to the other end of crossbeam width and adjacent permeable medium, both sides at crossbeam are provided with the injecting glue pipeline respectively, described two injecting glue pipelines are opened injecting glue in proper order, the choked flow district is set opening on the crossbeam of the corresponding side of injected rubber hose with the back, be about to the water conservancy diversion net and disconnect formation choked flow district, the open position of water conservancy diversion net is positioned at crossbeam and opens on the corresponding side of injected rubber hose with the back; Be that the choked flow district is positioned on the crossbeam side corresponding with back unlatching injected rubber hose, change the difference of resin along machine direction and vertical fibers direction infiltration rate, thereby play the effect of choked flow, make the resin flow direction become top-down fiber pervasion process by lateral flow; (resin is vertical with the length direction of crossbeam at the online flow direction of water conservancy diversion,) between the water conservancy diversion net spacing distance according to the number of plies of glass cloth or determine the hardening time of thickness and resin, also can be at the choked flow zone in the permeable medium upper berth of the position that needs choked flow, promptly open the corresponding side upper berth of injected rubber hose in crossbeam and back and establish choked flow zone, choked flow zone is vertically consistent with the crossbeam length direction; Adhesive tape soft under the effect of vacuum pressure is embedded in the grid of permeable medium, thereby plays the effect of choked flow, makes the resin flow direction become top-down fiber pervasion process by lateral flow; Also choked flow zone can be laid immediately on the upper end face of blade shell.Another mode is at the inner continuous felt that adds suitable thickness of crossbeam shop layer, accelerates resin infiltration rate therein.
Crossbeam in the blade is generally one or two, is example with the blade that contains two main girders here, the line arrangement when forms of crossbeam and housing etc. is described.For the blade that has only a crossbeam, generally be to remove a little crossbeam, it is bigger that main girder is done, and need reduce two injected rubber hoses and a choked flow zone when then crossbeam pours into.
Corresponding crossbeam two ends are respectively arranged with the injecting glue pipeline, the choked flow zone of zones of different is set according to the width of crossbeam between pipeline, choked flow zone can adopt sealing joint strip or bala gutta or adopt the method that does not add any parallel works, increase resistance flowing effect if desired, then can two kinds of methods unite use.The width of choked flow zone is formulated according to the width and the thickness of crossbeam.The thick more wide more then choked flow zone area of crossbeam is big more, otherwise area is more little.
Embodiment
Embodiment 1-wind electricity blade crossbeam and housing are one-body molded
1, makes the hard one-side mould that to heat, if adopt the cured resin at room temperature system then do not need heater; 2, mold cleaning is played releasing agent; 3, lay reinforcing material and filler, the girder forming reinforcing material is laid therewith; 4, by the pipe net arrangement of carrying out shown in Figure 1, the area in choked flow district will change according to the thickness of crossbeam shop floor, and respectively there is a glue inlet tube at the two ends of beam; 5, seal entire die with vacuum bag, vacuumize, confirm that no air leaks the back perfusion resin, is heating and curing; 6, place shear web (the independent making), matched moulds solidifies; 7, composite material blade is deviate from mould.
Embodiment 2-priming by vacuum legal system has the fiber-reinforced resin matrix compound material of sudden change as thickness
1, makes the hard one-side mould that to heat, if adopt the cured resin at room temperature system then do not need heater; 2, mold cleaning is played releasing agent; 3, lay reinforcing material, lay therewith in the abrupt changes in thickness zone; 4, pipe network is laid, and arranges that by the water conservancy diversion that carries out shown in Figure 2 the top in sudden change zone need be carried out the setting of choked flow district and permeable medium according to the sudden change situation; 5, seal entire die with vacuum bag, vacuumize, confirm that no air leaks the back perfusion resin, is heating and curing; 6, composite finished product is deviate from mould.

Claims (1)

1. method for preparing the large-scale composite material blade of wind-driven generator, a few part split productions of the upper and lower shell of blade shell and keel girder; With the involutory connection of blade upper and lower casing, and the setting of keel girder is installed in the blade upper and lower casing, constitutes the blade of whole composite material wind-driven generator; It is characterized in that: the present invention relates generally to the making of the upper and lower shell of blade; Wherein, the production method of the upper and lower shell of blade is identical promptly when the laying of blade enclosure, directly lays crossbeam (3) in the blade enclosure body; Adopt the method for vacuum assisted resin infusion,, finish the making of blade shell by crossbeam (3) and the integrated technology of blade shell; The shop layer of crossbeam (3) participates in the process of deployment of blade shell, i.e. the shop layer work of blade shell has comprised crossbeam (3), when the laying of blade shell, directly lays crossbeam in blade shell; Promptly during to middle bed thickness, earlier lay small pieces in the both sides of laying the crossbeam position at the sheet of laying blade shell and small pieces, the thickness of the small pieces of laying is identical with the thickness of laying crossbeam; Lay crossbeam in the width middle part of laying blade shell, re-lay blade shell to shop layer and finish; Overall perfusion makes crossbeam and blade shell one-body molded under vacuum state; When priming by vacuum, the variation of infiltration rate in fiber is provided with different quick water conservancy diversion districts and choked flow district (7) according to resin, so that the whole shop of the infiltration that resin can be faster and better layer; Lay the water conservancy diversion net at the blade shell upper face of being laid, constitute quick water conservancy diversion district; The water conservancy diversion net correspondence of the blade shell upper face that is laid on is positioned at the crossbeam setting of blade shell; Being provided with of described choked flow district (7) can be adopted the mode that keeps at a certain distance away between the permeable medium, and the interval between the permeable medium constitutes the choked flow district; Soon permeable medium is positioned at the blade shell upper surface and makes with the corresponding blade shell upper end face of crossbeam and has permeable medium (8), described permeable medium (8) keeps at a certain distance away between corresponding to the other end of crossbeam width and adjacent permeable medium, in the both sides of crossbeam injecting glue pipeline (5) is set respectively, described two injecting glue pipelines (5) order is opened injecting glue, choked flow district (7) is set opening on the crossbeam of the corresponding side of injected rubber hose with the back, be about to the water conservancy diversion net and disconnect formation choked flow district, the open position of water conservancy diversion net is positioned at crossbeam and opens on the corresponding side of injected rubber hose with the back; Be that the choked flow district is positioned on the crossbeam side corresponding with back unlatching injected rubber hose, change the difference of resin along machine direction and vertical fibers direction infiltration rate, thereby play the effect of choked flow, make the resin flow direction become top-down fiber pervasion process by lateral flow; (resin is vertical with the length direction of crossbeam at the online flow direction of water conservancy diversion,) between the water conservancy diversion net spacing distance according to the number of plies of glass cloth or determine the hardening time of thickness and resin, also can be at the choked flow zone in permeable medium upper berth (9) of the position that needs choked flow, promptly open the corresponding side upper berth of injected rubber hose in crossbeam and back and establish choked flow zone (9), choked flow zone is vertically consistent with the crossbeam length direction; Adhesive tape soft under the effect of vacuum pressure is embedded in the grid of permeable medium, thereby plays the effect of choked flow, makes the resin flow direction become top-down fiber pervasion process by lateral flow; Also choked flow zone (9) can be laid immediately on the upper end face of blade shell; At the inner continuous felt that suitable thickness is arranged that adds of crossbeam shop layer, accelerate resin infiltration rate therein.
CN200910227735.7A 2009-12-30 2009-12-30 Method for preparing large-scale composite-material aerogenerator blade Active CN102114710B (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN102431184A (en) * 2011-10-21 2012-05-02 中国兵器工业集团第五三研究所 Technological method for forming multiple composite plates in one step
CN102797646A (en) * 2012-09-11 2012-11-28 迪皮埃复材构件(太仓)有限公司 Blade of wind-driven generator and manufacturing method thereof
CN102814996A (en) * 2012-08-24 2012-12-12 中国人民解放军国防科学技术大学 Preparing method of hybrid composite wing spar of large-scale wind power blade
CN104416919A (en) * 2013-08-28 2015-03-18 上海艾郎风电科技发展有限公司 Method for integrally forming master mold and girder of wind turbine blade
CN105346105A (en) * 2015-12-01 2016-02-24 洛阳双瑞风电叶片有限公司 Manufacturing mold and manufacturing method of wind turbine blade
CN105383074A (en) * 2015-12-01 2016-03-09 洛阳双瑞风电叶片有限公司 Wind-power blade preparation method capable of controlling mass distribution
CN105751530A (en) * 2016-04-15 2016-07-13 三重型能源装备有限公司 Blade manufacturing method
CN107856327A (en) * 2017-10-10 2018-03-30 上海致远绿色能源股份有限公司 Spar cap and blade shell one pouring and forming process

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EP1880833A1 (en) * 2006-07-19 2008-01-23 National University of Ireland, Galway Composite articles comprising in-situ-polymerisable thermoplastic material and processes for their construction
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
CN101186110A (en) * 2007-11-23 2008-05-28 上海麦登复合材料有限公司 Vacuum impregnation technique of fan blade

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WO2003103933A1 (en) * 2002-06-07 2003-12-18 Short Brothers Plc A fibre reinforced composite component and method to produce such component
EP1880833A1 (en) * 2006-07-19 2008-01-23 National University of Ireland, Galway Composite articles comprising in-situ-polymerisable thermoplastic material and processes for their construction
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
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102431184A (en) * 2011-10-21 2012-05-02 中国兵器工业集团第五三研究所 Technological method for forming multiple composite plates in one step
CN102431184B (en) * 2011-10-21 2014-12-10 中国兵器工业集团第五三研究所 Technological method for forming multiple composite plates in one step
CN102814996A (en) * 2012-08-24 2012-12-12 中国人民解放军国防科学技术大学 Preparing method of hybrid composite wing spar of large-scale wind power blade
CN102797646A (en) * 2012-09-11 2012-11-28 迪皮埃复材构件(太仓)有限公司 Blade of wind-driven generator and manufacturing method thereof
CN102797646B (en) * 2012-09-11 2016-05-04 迪皮埃复材构件(太仓)有限公司 A kind of blade of wind-driven generator and manufacture method thereof
CN104416919A (en) * 2013-08-28 2015-03-18 上海艾郎风电科技发展有限公司 Method for integrally forming master mold and girder of wind turbine blade
CN105346105A (en) * 2015-12-01 2016-02-24 洛阳双瑞风电叶片有限公司 Manufacturing mold and manufacturing method of wind turbine blade
CN105383074A (en) * 2015-12-01 2016-03-09 洛阳双瑞风电叶片有限公司 Wind-power blade preparation method capable of controlling mass distribution
CN105383074B (en) * 2015-12-01 2017-05-31 洛阳双瑞风电叶片有限公司 A kind of wind electricity blade preparation method of control wind electricity blade Mass Distribution
CN105751530A (en) * 2016-04-15 2016-07-13 三重型能源装备有限公司 Blade manufacturing method
CN107856327A (en) * 2017-10-10 2018-03-30 上海致远绿色能源股份有限公司 Spar cap and blade shell one pouring and forming process

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