CN101234531B - Bamboo composite material wind-driven generator blade root preformation indoctrination technique - Google Patents
Bamboo composite material wind-driven generator blade root preformation indoctrination technique Download PDFInfo
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- CN101234531B CN101234531B CN2008100185002A CN200810018500A CN101234531B CN 101234531 B CN101234531 B CN 101234531B CN 2008100185002 A CN2008100185002 A CN 2008100185002A CN 200810018500 A CN200810018500 A CN 200810018500A CN 101234531 B CN101234531 B CN 101234531B
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Abstract
The invention relates to an instillation process for pro-forming a blade root of a blade of a wind turbine with bamboo compound material belonging to a technical field of the process of blade of the wind turbine, which is characterized in that a die is cleaned; a sealed belt is bonded around a flange surface and demoulding cloth is laid on the die; a bamboo sheet layer is laid on the demoulding cloth and compactly laid in the die side by side; after the bamboo sheet layer is laid, a layer of demoulding cloth is laid and then a vacuum bag is sealed outside a ply and the ply is sealed inside the vacuum bag by the sealed belt to form a vacuum sealed space; at last, resin is instilled in the die and after curing, demoulding and surface process, the ply is sealed in the vacuum bag to form an intermediate product of the pre-forming blade root. The intermediate product of the pre-forming blade root is laid in the corresponding position of the blade root in instillation of whole blade and at the same time, other ply is instilled to be the whole blade; the instillation process is convenient in manufacturing of the die, simple in process method and low in production cost, can facilitate environmental protection and promote application performance of the products.
Description
Technical field
The present invention relates to a kind of bamboo composite material wind-driven generator blade root preformation indoctrination technology, belong to blade of wind-driven generator component processing technical field.
Background technology
At present, it is the reinforcement material of primary structure that most blade manufacturing industry of wind-driven generator all adopt with fiberglass, but for the blade of length above 30 meters, the common carbon fibre material that need add costliness just can remedy the deficiency on the material stiffness, and carbon fibre material not only costs an arm and a leg, and the supply wretched insufficiency, and fibre glass product manufacture is not easy to reclaim.
Blade of wind-driven generator is generally and lays bamboo wood, packing material etc. in the middle of layer glass steel material aborning, and after inculcating epoxy resin, integral body vacuumizes, curing molding.But because the root of blade bending curvature is bigger, root of blade and blade body are difficult to once inculcate moulding.This forming method of inculcating forms quite difficulty of integral body, and difficulty of processing is big, makes the mould difficulty, inefficiency, and be difficult to improve the serviceability of product.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of bamboo composite material wind-driven generator blade root preformation indoctrination technology, shape that can be different according to blade root portion, be divided into polylith, the bamboo material of reasonable use shop overlays on the demoulding cloth, through inculcating moulding, curing, form blade root intermediate products; Then these preformed blade root intermediate products are inculcated middle berth at integral blade and go into, inculcate into whole blade together with other shop layer in blade root parts relevant position; The making mould is convenient, and processing method is simple, can improve the serviceability of product.
Main solution of the present invention is achieved in that
Bamboo composite material wind-driven generator blade root preformation indoctrination technology of the present invention, adopt following processing step:
1, equipment and material are prepared; Infusion process routinely is equipped with vavuum pump, air compressor machine, vacuum air storage tank; Material: demoulding cloth, bamboo chip, matrix material and various stone.
2, mould is prepared:
(a), make 10～20 blade root prefabricated section moulds according to bamboo root of blade shape, size; (b), every mould is provided with flange, and on flange face bonding one all sealant tapes; (c), cleaning die: remove the die surface foreign material, use clean mould agent, releasing agent wiping die surface then successively;
3, bamboo material is spread layer:
(a), on mould, lay release cloth;
(b), tight side by side lay multilayer bamboo chip layer on release cloth;
Bamboo chip is built up one pile, be bundled into the bamboo chip layer; The tight side by side lay of bamboo chip layer is in mould; Described bamboo chip layer thickness is: 20～50 centimetres; Described bamboo chip width is: 5～15mm; Described bamboo chip thickness is: 1～3mm;
(c), on the bamboo chip layer, repave and put release cloth and form bamboo shop layer; Described release cloth thickness is: 0.2～0.6mm;
4, arrange pipeline: on the layer of bamboo shop, arrange and inculcate the matrix material pipeline; At mould one end glue inlet tube is set, sebific duct is taken out in other end setting;
5, inculcate operation:
(a), vacuum tightness: vacuum bag is enclosed in layer outside, shop, with boning in a week of flange face bonding with sealant tape; Again vacuum bag is enclosed in layer outside, bamboo material shop, bamboo material shop layer is encapsulated in the vacuum bag, form vacuum sealing space with sealant tape;
(b), open vavuum pump, to forvacuum in the vacuum bag;
(c), inculcate matrix material: open glue inlet tube and take out sebific duct, inculcate matrix material; Inculcated behind the matrix material curing under 20～30 ℃ of conditions, demoulding, cooling curing moulding at normal temperatures 4～5 hours; When inculcating vacuum pressure remain on-0.9～-0.6atm between, need to keep vacuum pressure before solidifying, vacuum pressure is required holds time: 7～10 hours; Environment temperature: 19～23 ℃, ambient humidity is in 70%; Mold temperature: 15～23 ℃;
6, subsequent treatment: after treating the epoxy resin primary solidification, close vavuum pump; The demoulding again, back curing molding; Carrying out skin patching at last is preformed blade root intermediate products.
Described matrix material adopts epoxy resin and curing agent mixing composition, unsaturated polyester resin and curing agent mixing composition or epoxy resin and unsaturated polyester resin to mix composition with curing agent.Described epoxy resin is 1: 0.3～0.35 with the ratio of curing agent.
Compared with the prior art the present invention has the following advantages:
The present invention can make the mould of monomer or disjunctor according to shape, the size of root of blade, and then adopt identical infusion process to make the preformed blade root parts of monomer or disjunctor, the blade root relevant position is gone in the shop, inculcates into whole blade together with other shop layer; 2, it makes mould conveniently, and processing method is simple, can improve the serviceability of product; 3, preformed blade root parts are at a large amount of bamboo chip material that uses of shop layer, and promptly folder has been spread a large amount of bamboo chip materials between organic material (release cloth), has significantly reduced the use of glass cloth; Use the primary structure body of mao bamboon as blade, rational Airfoil Design in addition can avoid using carbon fiber fully with interior blade for 40 meters long; 4, can reduce manufacturing cost, raw-material cost avoids using expensive carbon cloth; Simultaneously bamboo matter blade production efficiency height, initial outlay are low, and required producers are few; Come in the long term, bamboo matter blade has reduced the use of resin, and resin is the byproduct of oil, and this has just reduced the risk of product price with the crude oil price fluctuation; 5,, and need labour still less because bamboo matter blade adopts the resin infusion process, and speed of production approximately is the twice of fiberglass blade; 6, help environmental protection, the weight of nearly 50-80% is natural material in the bamboo matter blade product, in contrast to fiberglass blade, is beneficial to degraded more.
Description of drawings
Fig. 1 is structural representation in the infusion process of the present invention.
Fig. 2 is an infusion process flow chart of the present invention.
Fig. 3 is a whole blade structural representation of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: comprise mould 1, release cloth 2, bamboo chip layer 3, vacuum bag 4, sealant tape 5.
Embodiment one:
Bamboo composite material wind-driven generator blade root preformation indoctrination technology of the present invention, adopt following processing step:
1, equipment and material are prepared: infusion process routinely is equipped with vavuum pump, air compressor machine, vacuum air storage tank; Material: demoulding cloth, bamboo chip, matrix material and various stone.
2, mould is prepared: (a), make 10～20 blade root prefabricated section moulds (every prefabricated infusion process of blade root is identical) according to bamboo root of blade shape, size; (b), every mould is provided with flange, and on flange face bonding one all sealant tapes 5, seal vacuum bag after being used for.(c), cleaning die: remove the die surface foreign material,, low amounts of resin residual etc. as sealant tape; Use clean mould agent, releasing agent wiping die surface then successively; Make the entire die smooth surface, be convenient to lay material and curing and demolding.
3, bamboo material shop layer: (a), at first on mould, lay conventional release cloth 2 by die size.
(b), on release cloth 2 tight lay multilayer bamboo chip layer 3 side by side, multilayer bamboo chip layer lay is in mould 1.Concrete operations are that bamboo chip is built up one pile, are bundled into bamboo chip layer 3; Bamboo chip layer 3 will closely lay be in mould 1 side by side, and the bamboo chip layer thickness is: 32 centimetres, the bamboo chip width is: 13.6mm; Bamboo chip thickness is: 1.2mm, bamboo chip length is decided according to die length.Till bamboo chip layer 3 is paved with according to shape, the size dimension of mould.
(c), be paved with the bamboo chip layer and reaching on the certain thickness basis, repave and put release cloth 2 and form bamboo material shop layer; The effect of release cloth 2 is can form crude surface at outer surface after making product stripping, is convenient to bond with the blade other parts.Described release cloth 2 thickness are: 0.3mm.
4, arrange pipeline: on the good shop layer of lay, arrange and inculcate the epoxy resin pipeline; At mould one end glue inlet tube is set, sebific duct is taken out in other end setting.
5, inculcate operation:
(a), vacuum tightness: vacuum bag 4 is enclosed in shop layer outside, with all sealant tape 5 bondings of above-mentioned flange face bonding; And then vacuum bag 4 is enclosed in layer outside, bamboo material shop, with sealant tape 5 bamboo material shop layer is encapsulated in the vacuum bag formation vacuum sealing space.
(b), open vavuum pump, to forvacuum in the vacuum bag, carry out leakage detection and mending-leakage simultaneously.
(c), inculcate matrix material epoxy resin: open glue inlet tube and take out sebific duct, begin to inculcate matrix material, have glue to extract out, close vavuum pump to taking out sebific duct; Matrix material adopts epoxy resin to mix composition with curing agent; Inculcated behind the matrix material curing under 20 ℃ of conditions, demoulding, cooling curing moulding at normal temperatures 4 hours.Epoxy resin is the epoxy curing agent group (the epoxy resin model is YD535LV, and the curing agent model is TH7257, directly is made into component by producer) that market is purchased, and epoxy resin is generally 1: 0.35 with the ratio of curing agent; When inculcating vacuum pressure remain on-0.9～-0.6atm (atmospheric pressure unit) between, product needs to keep vacuum pressure before just solidifying always, vacuum pressure is required holds time: 7 hours; Environment temperature: 19 ℃, ambient humidity is in 70%; Mold temperature: 15 ℃, matrix material is inculcated usually at normal temperatures.
6, subsequent treatment: after treating the epoxy resin primary solidification, close vavuum pump; The demoulding again, back curing molding; Back solidification temperature requires to remain on 60 ℃, rear curing time 5 hours; Carrying out skin patching at last is preformed blade root intermediate products.
When preformed blade root intermediate products use,, inculcate into whole blade together with other blade shop layer as long as polylith is laid in blade integral mould blade root parts relevant position.
Embodiment two:
Bamboo composite material wind-driven generator blade root preformation indoctrination technology of the present invention, adopt following processing step:
1, equipment and material are prepared: infusion process routinely is equipped with vavuum pump, air compressor machine, vacuum air storage tank; Material: demoulding cloth, bamboo chip, matrix material and various stone.
2, mould is prepared: (a), make 14 blade root prefabricated section moulds according to bamboo root of blade shape, size; (b), every mould is provided with flange, and on flange face bonding one all sealant tapes 5, seal vacuum bag after being used for.(c), cleaning die: remove the die surface foreign material,, low amounts of resin residual etc. as sealant tape; Use clean mould agent, releasing agent (the conventional use) wiping die surface then successively; Make the entire die smooth surface, be convenient to lay material and curing and demolding.
3, bamboo material shop layer: (a), at first on mould, lay conventional release cloth 2 by die size.
(b), on release cloth 2 tight lay multilayer bamboo chip layer 3 side by side, multilayer bamboo chip layer lay is in mould 1.Concrete operations are that bamboo chip is built up one pile, are bundled into bamboo chip layer 3; Bamboo chip layer 3 will closely lay be in mould 1 side by side, and the bamboo chip layer thickness is: 30 centimetres, the bamboo chip width is: 13.6mm; Bamboo chip thickness is: 1mm, bamboo chip length is decided according to die length.Till bamboo chip layer 3 is paved with according to shape, the size dimension of mould.
(c), be paved with the bamboo chip layer and reaching on the certain thickness basis, repave and put release cloth 2 and form bamboo material shop layer; The effect of release cloth 2 is can form crude surface at outer surface after making product stripping, is convenient to bond with the blade other parts.Described release cloth 2 thickness are: 0.4mm.
4, arrange pipeline: on the good shop layer of lay, arrange and inculcate the epoxy resin pipeline; At mould one end glue inlet tube is set, sebific duct is taken out in other end setting.
5, inculcate operation:
(a), vacuum tightness: vacuum bag 4 is enclosed in shop layer outside, with all sealant tape 5 bondings of above-mentioned flange face bonding; And then vacuum bag 4 is enclosed in layer outside, bamboo material shop, with sealant tape 5 bamboo material shop layer is encapsulated in the vacuum bag formation vacuum sealing space.
(b), open vavuum pump, to forvacuum in the vacuum bag, carry out leakage detection and mending-leakage simultaneously.
(c), inculcate matrix material epoxy resin: open glue inlet tube and take out sebific duct, begin to inculcate matrix material epoxy resin, have glue to extract out, close vavuum pump to taking out sebific duct; Matrix material adopts epoxy resin to mix composition with curing agent.Inculcate matrix material after 5 hours, under 25 ℃ of conditions, solidify.Epoxy resin and curing agent are the epoxy curing agent group (the epoxy resin model is YD535, and the curing agent model is TH7253, directly is made into component by producer) that market is purchased, and epoxy resin is generally 1: 0.3 with the ratio of curing agent; When matrix material is inculcated vacuum pressure remain on-0.9～-0.6atm (atmospheric pressure unit) between, product needs to keep vacuum pressure before just solidifying always, vacuum pressure is required holds time: 10 hours.Environment temperature: 23 ℃, ambient humidity is in 70%; Mold temperature: 23 ℃.Matrix material is inculcated usually at normal temperatures.
6, subsequent treatment: after treating the epoxy resin primary solidification, close vavuum pump; The demoulding again, back curing molding; Back solidification temperature requires to remain on 70 ℃, rear curing time 8 hours; Carrying out skin patching at last is preformed blade root intermediate products.
When preformed blade root intermediate products use,, inculcate into whole blade together with other blade shop layer as long as polylith is laid in blade integral mould blade root parts relevant position.
The equipment that uses among the embodiment of the invention one and the embodiment two is conventional equipment, and the raw material that use are purchased by market.As the epoxy resin that Thailand company produces, model is R:YD535LV, or the epoxy resin YD 5535 of MidAmerican company production; Or the epoxy resin YD535 of Yingshui company production; And for example the curing agent model of Thailand company production is that the curing agent model that TH7257 or Yingshui company produce is TH7253 or TH7254 or TH7256 etc.
Claims (2)
1. bamboo composite material wind-driven generator blade root preformation indoctrination technology is characterized in that adopting following processing step:
(1), equipment and material are prepared; Be equipped with vavuum pump, air compressor machine, vacuum air storage tank; Material: demoulding cloth, bamboo chip, matrix material and various stone;
(2), mould is prepared:
(a), make 10～20 blade root prefabricated section moulds according to bamboo root of blade shape, size;
(b), every prefabricated section mould is provided with flange, and on flange face bonding one all sealant tapes;
(c), cleaning die: remove the die surface foreign material, use clean mould agent, releasing agent wiping die surface successively;
(3), bamboo material is spread layer:
(a), on the prefabricated section mould, lay release cloth; Described release cloth thickness is: 0.2～0.6mm;
(b), tight side by side lay multilayer bamboo chip layer on release cloth;
Bamboo chip is built up one pile, be bundled into the bamboo chip layer; The tight side by side lay of bamboo chip layer is in mould; Described bamboo chip layer thickness is: 20～50 centimetres; Described bamboo chip width is: 5～15mm; Described bamboo chip thickness is: 1～3mm;
(c), on the bamboo chip layer, repave and put release cloth and form bamboo shop layer;
(4), arrange pipeline: on the layer of bamboo shop, arrange and inculcate the matrix material pipeline; At mould one end glue inlet tube is set, sebific duct is taken out in other end setting;
(5), inculcate operation:
(a), vacuum tightness: vacuum bag is enclosed in layer outside, shop, with boning in a week of flange face bonding with sealant tape; Again vacuum bag is enclosed in layer outside, bamboo shop, bamboo shop layer is encapsulated in the vacuum bag, form vacuum sealing space with sealant tape;
(b), open vavuum pump, to forvacuum in the vacuum bag;
(c), inculcate matrix material: open glue inlet tube and take out sebific duct, inculcate matrix material; Inculcated behind the matrix material curing under 20～30 ℃ of conditions, demoulding, cooling curing moulding at normal temperatures 4～5 hours; When inculcating vacuum pressure remain on-0.9～-0.6atm between, need to keep vacuum pressure before solidifying, vacuum pressure is required holds time: 7～10 hours; Environment temperature: 19～23 ℃, ambient humidity is in 70%; Mold temperature: 15～23 ℃;
(6), subsequent treatment: after treating the epoxy resin primary solidification, close vavuum pump; The demoulding again, back curing molding; Carrying out skin patching at last is preformed blade root intermediate products.
2. bamboo composite material wind-driven generator blade root preformation indoctrination technology according to claim 1 is characterized in that described matrix material adopts epoxy resin and curing agent, unsaturated polyester resin and curing agent or epoxy resin and unsaturated polyester resin to mix composition with curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100185002A CN101234531B (en) | 2008-02-15 | 2008-02-15 | Bamboo composite material wind-driven generator blade root preformation indoctrination technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100185002A CN101234531B (en) | 2008-02-15 | 2008-02-15 | Bamboo composite material wind-driven generator blade root preformation indoctrination technique |
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| CN101234531A CN101234531A (en) | 2008-08-06 |
| CN101234531B true CN101234531B (en) | 2010-09-29 |
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| JP2013504007A (en) * | 2009-09-04 | 2013-02-04 | バイエル・マテリアルサイエンス・リミテッド・ライアビリティ・カンパニー | Automated manufacturing method for polyurethane turbine blades |
| CN104039536A (en) * | 2011-12-29 | 2014-09-10 | 巴斯夫涂料有限公司 | Use of biodegradable plastic films in a method for producing fiber-reinforced plastics by means of vacuum infusion |
| CN103358570A (en) * | 2013-07-30 | 2013-10-23 | 无锡乘风新能源设备有限公司 | Method for preventing product demolding in megawatt blade die locking process |
| CN107984562B (en) * | 2017-12-31 | 2023-11-28 | 浙江省林业科学研究院 | Manufacturing method of RTM (resin transfer molding) bamboo bundle composite board |
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Granted publication date: 20100929 Termination date: 20130215 |