CN103921457A - Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process - Google Patents
Method for manufacturing main beam or auxiliary beam of fan blade by unidirectional sheets manufactured by use of pultrusion process Download PDFInfo
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- CN103921457A CN103921457A CN201410173248.8A CN201410173248A CN103921457A CN 103921457 A CN103921457 A CN 103921457A CN 201410173248 A CN201410173248 A CN 201410173248A CN 103921457 A CN103921457 A CN 103921457A
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- sheet material
- auxiliary beam
- mould
- blade
- fiber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a method for manufacturing a main beam or an auxiliary beam of a fan blade by unidirectional sheets manufactured by use of a pultrusion process. The method comprises the steps of carrying out pultrusion preparation of the unidirectional fiber sheets, laying the unidirectional fiber sheets subjected to pultrusion on a blade main beam or auxiliary beam mold, putting low-surface density glass fabrics between each two adjacent layers of sheets, laying a flow guide system on the main beam or auxiliary beam mold, pouring a resin in vacuum, heating to cure the resin and forming to obtain the main beam or auxiliary beam of the fan blade. The entire process of the method is reasonable in design and high in operability, and can be used for manufacturing wind-driven power generation blades different in length and load requirements. Especially, the laid sheets manufactured by use of the pultrusion process are laid on the main beam or auxiliary beam, so that the tensile strength and the elasticity modulus of the material can be effectively improved, the secure degree and the service life of the blade can be greatly increased, the blade is not prone to deform, and the amount of the material used for manufacturing the blade can be reduced and then the cost of the material is saved. In addition, the process of the method is capable of overcoming the quality problems of high probability of wrinkling, bubbles and the like of a traditional process of unidirectional laying.
Description
Technical field
Patent of the present invention relates to a kind of preparation method of fan blade main beam, is specifically related to one and manufactures sheet material by pultrusion molding process of glass fiber reinforced plastic, adopts sheet material to manufacture the method that the main and auxiliary beam of blade is used.
Background technology
Wind Power In China industry was since 2005, and through the fast development of 9 years, wind-driven generator set product obtained abundant fast, and type has had tens kinds.The wind field of its covering is from surpassing a class to weak four classes.
Wind wheel blade in the wind power generating set that Lianyungang Zhongfu Lianzhong Composite Material Group Co.,Ltd's research and development are produced.Length has extended to 75 meters by 31 meters.Along with the growth of length of blade, the increase of load, glass fiber material has been used high modulus fibre from general fibre, then to carbon fiber.When blade constantly increases under certain specified wind-powered electricity generation power of the assembling unit, the reliability that the distortion of blade is connected with root has produced crucial impact to the operation of unit.
Blade stand under load distortion: be mainly the tower cylinder that will avoid the blade tip shock wind-powered electricity generation unit after distortion.Now general processing method is in the industry the fiber that uses high-modulus, or the distortion that carbon fiber reduces blade increases headroom (blade tip is apart from the space of tower cylinder), and reduces blade gross weight.
But holding at high price of carbon fiber, is difficult to this cost of digestion as the component manufacturer of wind-powered electricity generation unit.And the production difficulty of carbon fiber blade is very high, the very difficult assurance of quality control.In addition on the one hand, the price of high modulus fibre has been low much compared with the price of carbon fiber, but its price has the trend of continuous rising now, compares carbon fibre material, for reducing the contribution of leaf weight or limited.Consider, the use of high modulus fibre has also been subject to certain restriction.
And the vacuum infusion molding process for compound and the prepreg moulding process that adopt are now prepared fan blade crossbeam or auxiliary beam, be difficult to control the gauffer of carbon fiber and the bubble of interlayer, affect the quality of fan blade.
Summary of the invention
Goal of the invention: object of the present invention, to prepare fan blade crossbeam or auxiliary beam in order to overcome prior art, the leaf weight existing is large, cost is high, and quality control difficulty is prone to the quality problems such as the bubble of gauffer and interlayer, provide a kind of technological design reasonable, workable, cost is low, the main and auxiliary beam preparation method of blade of system easy to control the quality.The main and auxiliary beam of fan blade that adopts method provided by the invention to prepare, lightweight, Functionality, quality and appealing design, there will not be the problem such as gauffer and interlayer bubble.
Technical scheme: in order to realize object of the present invention, the technical solution used in the present invention is:
(a) pultrusion goes out the sheet material of unidirectional fibre;
Concrete grammar is:
Be ready to extruding equipment, mould, heating system;
Fiber is carried out to processed by dehumidification system, the fiber that obtains being dried, for subsequent use;
To dehydrate fiber traction after treatment and infiltrate glue by constant-temperature glue groove; Then the fiber that infiltrated glue is drawn through rectangle pultrusion die cavity, then enter the mould that is heating and curing, obtain square-section sheet material;
(b) sheet surface is processed in finishing;
(c) get the pultrusion sheet material that step (b) makes, customized cut-off, is laid on blade girder or auxiliary beam mould in a certain order; Concrete grammar is:
Mold cleaning is clean;
Lay flow-guiding screen at die surface;
On die surface flow-guiding screen, lay release cloth, and then lay sheet material, and the sheet material of adjacent layer laying different in width, so that the seam in adjacent layer is staggered; (due to crossbeam or the more than one deck of auxiliary beam of blade, and overall width is some blocks of sheet materials, therefore in the preparation, the seam crossing of adjacent layer sheet material staggered, and is conducive to increase firm degree, prevents fracture)
According to designing requirement, in the middle of adjacent two layers sheet material, put into the glass fabric of the low surface density of one deck;
Laying has so circulated;
(d) on crossbeam or auxiliary beam mould, lay flow guide system, use priming by vacuum method to produce crossbeam or auxiliary beam, make all sheet materials form a large entirety, concrete grammar is:
On the crossbeam of having laid in step (c) or auxiliary beam, lay successively release cloth, wireway, hole film, VAP film, inhale glue blanket, flow-guiding screen and guiding gutter, then on whole crossbeam or auxiliary beam mould, lay vacuum film, vacuum film edge seals with sealing joint strip;
Then, after vacuumizing, to resin by injection in flow guide system, make resin soak full sheet material;
After resin injection,, make to inhale glue blanket and sop up unnecessary resin inhaling roll extrusion on glue blanket with helix tube;
Resin, moulding are heating and curing;
The demoulding, finishing.
As preferred version, the unidirectional sheet material that above-described employing pultrude process is manufactured is manufactured the method for fan blade main beam, the latitude direction of the glass fabric of the low surface density described in step (c) is glass fibre, or the glass fibre of contain ± 45 ° of directions of the glass fabric of low surface density.
The present invention passes through lot of experiments, the glass fabric of the low surface density of one deck is set in the middle of adjacent two layers sheet material, can greatly improve like this adhesive property and resin flows performance between sheet material, thereby can make resin fully soak between completely whole sheet material, improve the adhesive property between sheet material, improve intensity, and resin can fully fill between full sheet material, thereby there will not be the problem such as bubble of interlayer.And the alkali-free glass fibre sheet material that the present invention adopts preferred pultrude process to prepare, there is the two-fold advantage that reduces blade product cost and reduce leaf weight, adopt in addition pultrude process to prepare carbon fiber plate, the quality problems such as fold that can avoid prior art to occur, and there is excellent hot strength and elastic modelling quantity, can greatly improve firm degree and the service life of blade, and can be from reducing blade material use amount, blade is not yielding.
As preferred version, the unidirectional sheet material that above-described employing pultrude process is manufactured is manufactured the method for fan blade main beam or auxiliary beam, and the fiber in step (a) is glass fibre, carbon fiber or glass fibre and carbon fiber hybrid fiber.
As another technical scheme, in step c of the present invention, between two layers of unidirectional fibrous plate, put into the prepreg (if carbon fiber pultrusion sheet material is with regard to corresponding carbon fiber prepreg) of corresponding fiber, make the resin fusing in prepreg by heating, thereby adjacent two layers sheet material is bondd, finally all sheet materials are formed to a large entirety.Adopt this technical scheme not need the technique of vacuum infusion resin, more convenient to operate.
Beneficial effect: compared to the prior art, the present invention has the following advantages:
The whole technological design of the present invention is reasonable, workable, can meet the wind power generation blade for the production of different length and load requirement.The preparation method of the main and auxiliary beam of blade provided by the invention, the main and auxiliary beam of its Leaf adopts pultrusion to lay sheet material: hot strength and the elastic modelling quantity that can effectively improve material, greatly improve firm degree and the service life of blade, blade is not yielding, thereby can reduce blade material use amount, save material cost, can overcome prior art and prevent the shortcoming of being out of shape by increasing material usage.And technique of the present invention can overcome the laying of traditional handicraft unidirectional cloth and be prone to the quality problems such as fold, bubble.
Brief description of the drawings
Fig. 1 is that the present invention adopts unidirectional sheet material to manufacture the structural representation of fan blade main beam or auxiliary beam process.
Fig. 2 is the structural representation that in preparation process of the present invention, pultrusion sheet material is laid.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.
As shown in Figure 1:
A kind of unidirectional sheet material manufacture fan blade main beam that adopts pultrude process to manufacture
orthe method of auxiliary beam, it comprises the following steps:
(a) pultrusion goes out the sheet material of unidirectional fibre;
Concrete grammar is:
Be ready to extruding equipment, mould, heating system;
Fiber is carried out to processed by dehumidification system, the fiber that obtains being dried, for subsequent use;
To dehydrate fiber traction after treatment and infiltrate glue by constant-temperature glue groove; Then the fiber that infiltrated glue is drawn through rectangle pultrusion die cavity, then enter the mould that is heating and curing, obtain square-section sheet material;
(b) sheet surface is processed in finishing, removes its surperficial releasing agent etc.;
(c) get the pultrusion sheet material that step (b) makes, customized cut-off, is placed on blade girder or auxiliary beam mould in a certain order; Concrete grammar is:
Mould (1) is cleaned out;
Lay flow-guiding screen (2) on mould (1) surface;
At the upper release cloth (3) of laying of the surperficial flow-guiding screen of mould (1) (2), and then laying sheet material (4), and adjacent layer is laid the sheet material (4) of different in width, so that the seam in adjacent layer is staggered, as shown in Figure 2;
According to designing requirement, in the middle of adjacent two layers sheet material (4), put into the glass fabric of the low surface density of one deck;
Laying has so circulated;
(d) on crossbeam or auxiliary beam mould, lay flow guide system, use priming by vacuum method to produce crossbeam or auxiliary beam, make all sheet materials form a large entirety, concrete grammar is:
As shown in Figure 1, on the crossbeam of having laid in step (c) or auxiliary beam, lay successively release cloth (3), wireway (5), hole film (6), VAP film (8), inhale glue blanket (9), flow-guiding screen (2) and guiding gutter (10), then on whole crossbeam or auxiliary beam mould, lay vacuum film (11), vacuum film (11) sealing joint strip for edge (12) sealing;
Then, after vacuumizing, to resin by injection in flow guide system, make resin soak full sheet material;
After resin injection,, make to inhale glue blanket and sop up unnecessary resin inhaling the upper roll extrusion of glue blanket (9) with helix tube (13);
Resin, moulding are heating and curing;
The demoulding, finishing.
The unidirectional sheet material that above-described employing pultrude process is manufactured is manufactured fan blade main beam
orthe method of auxiliary beam, the glass fabric of the described low surface density of step (c) latitude direction be glass fibre, or the glass fibre of contain ± 45 ° of directions of fabric.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (3)
1. adopt the unidirectional sheet material of pultrude process manufacture to manufacture a method for fan blade main beam or auxiliary beam, it is characterized in that, comprise the following steps:
(a) pultrusion goes out the sheet material of unidirectional fibre;
Concrete grammar is:
Be ready to extruding equipment, mould, heating system;
Fiber is carried out to processed by dehumidification system, the fiber that obtains being dried, for subsequent use;
To dehydrate fiber traction after treatment and infiltrate glue by constant-temperature glue groove; Then the fiber that infiltrated glue is drawn through rectangle pultrusion die cavity, then enter the mould that is heating and curing, obtain square-section sheet material;
(b) sheet surface is processed in finishing;
(c) get the pultrusion sheet material that step (b) makes, customized cut-off, is laid on blade girder or auxiliary beam mould in a certain order; Concrete grammar is:
Mould (1) is cleaned out;
Lay flow-guiding screen (2) on mould (1) surface;
At the upper release cloth (3) of laying of the surperficial flow-guiding screen of mould (1) (2), and then lay sheet material (4), and the sheet material (4) of adjacent layer laying different in width, so that the seam in adjacent layer is staggered;
According to designing requirement, in the middle of adjacent two layers sheet material (4), put into the glass fabric of the low surface density of one deck;
Laying has so circulated;
(d) on crossbeam or auxiliary beam mould, lay flow guide system, use priming by vacuum method to produce crossbeam or auxiliary beam, make all sheet materials form a large entirety, concrete grammar is:
On the crossbeam of having laid in step (c) or auxiliary beam, lay successively release cloth (3), wireway (5), hole film (6), VAP film (8), inhale glue blanket (9), flow-guiding screen (2) and guiding gutter (10), then on whole crossbeam or auxiliary beam mould, lay vacuum film (11), vacuum film (11) sealing joint strip for edge (12) sealing;
Then, after vacuumizing, to resin by injection in flow guide system, make resin soak full sheet material;
After resin injection,, make to inhale glue blanket and sop up unnecessary resin inhaling the upper roll extrusion of glue blanket (9) with helix tube (13);
Resin, moulding are heating and curing;
The demoulding, finishing.
2. the unidirectional sheet material that employing pultrude process according to claim 1 is manufactured is manufactured the method for fan blade main beam or auxiliary beam, it is characterized in that, the latitude direction of the glass fabric of the low surface density described in step (c) is glass fibre, or the glass fibre of contain ± 45 ° of directions of fabric.
3. the unidirectional sheet material that employing pultrude process according to claim 1 is manufactured is manufactured the method for fan blade main beam or auxiliary beam, it is characterized in that, the fiber in step (a) is glass fibre, carbon fiber or glass fibre and carbon fiber hybrid fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173248.8A CN103921457B (en) | 2014-04-28 | 2014-04-28 | A kind of unidirectional sheet material adopting pultrude process to manufacture manufactures the method for fan blade main beam or auxiliary beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173248.8A CN103921457B (en) | 2014-04-28 | 2014-04-28 | A kind of unidirectional sheet material adopting pultrude process to manufacture manufactures the method for fan blade main beam or auxiliary beam |
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| Publication Number | Publication Date |
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| CN103921457A true CN103921457A (en) | 2014-07-16 |
| CN103921457B CN103921457B (en) | 2016-03-30 |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325658A (en) * | 2014-09-05 | 2015-02-04 | 航天材料及工艺研究所 | Making method of heavy gauge composite material main beam cap for fan blades |
| CN106903917A (en) * | 2015-12-22 | 2017-06-30 | 中材科技风电叶片股份有限公司 | Wind power generation blade and preparation method thereof |
| CN106945306A (en) * | 2017-05-11 | 2017-07-14 | 常州市宏发纵横新材料科技股份有限公司 | Using the technique of the board making wind electricity blade of pultrusion |
| CN106985410A (en) * | 2017-05-10 | 2017-07-28 | 常州市新创复合材料有限公司 | Using the board making wind electricity blade crossbeam or the production system of auxiliary beam of pultrusion |
| CN107813509A (en) * | 2017-09-21 | 2018-03-20 | 株洲时代新材料科技股份有限公司 | Wind electricity blade crossbeam spreads cloth method |
| CN108312575A (en) * | 2018-04-17 | 2018-07-24 | 连云港中复连众复合材料集团有限公司 | A method of manufacture wind electricity blade girder, auxiliary beam are mixed with glass fabric using carbon fiber pulltrusion |
| CN108869167A (en) * | 2018-06-07 | 2018-11-23 | 武汉理工大学 | Fan blade crossbeam and preparation method thereof |
| CN109372708A (en) * | 2018-10-12 | 2019-02-22 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade girder or auxiliary girder construction and its manufacturing method |
| CN109397722A (en) * | 2018-11-30 | 2019-03-01 | 深圳寰球乐飞技术有限公司 | A kind of connection method and connection structure of the prefabricated web and blade shell of wind electricity blade |
| CN109571991A (en) * | 2018-11-20 | 2019-04-05 | 连云港中复连众复合材料集团有限公司 | The method for preparing wind electricity blade girder using different materials |
| CN109732951A (en) * | 2019-03-04 | 2019-05-10 | 上伟（江苏）碳纤复合材料有限公司 | A kind of wind electricity blade pultrusion enhancing plate and its manufacturing method conducive to resin flowing |
| CN110126303A (en) * | 2019-05-31 | 2019-08-16 | 连云港中复连众复合材料集团有限公司 | A method of fan blade of wind generating set girder is prepared with the wide pultruded panels of whole picture |
| CN111169047A (en) * | 2020-02-12 | 2020-05-19 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing main beam and auxiliary beam of wind power blade by mixing thick and narrow strip pultrusion profiles and glass fiber fabric |
| US10677216B2 (en) | 2017-10-24 | 2020-06-09 | General Electric Company | Wind turbine rotor blade components formed using pultruded rods |
| CN111761846A (en) * | 2020-07-03 | 2020-10-13 | 常州市新创智能科技有限公司 | Blade pultrusion girder production system and master control method thereof |
| WO2021037817A1 (en) | 2019-08-30 | 2021-03-04 | Covestro Intellectual Property Gmbh & Co. Kg | Method for producing a spar cap, trailing edge and/or other reinforced laminate structural parts of wind turbine blade |
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| CN112611613A (en) * | 2020-11-26 | 2021-04-06 | 重庆国际复合材料股份有限公司 | Pultruded plate bonding strength test sample strip for wind power and manufacturing method thereof |
| EP3804972A1 (en) | 2019-10-11 | 2021-04-14 | Covestro Deutschland AG | Method for producing a spar cap or trailing reinforced laminate of wind turbine blade and laminate obtained thereby |
| WO2022021039A1 (en) * | 2020-07-28 | 2022-02-03 | 远景能源有限公司 | Main beam for use in wind-driven generator blade and manufacturing method therefor |
| CN114211781A (en) * | 2021-11-29 | 2022-03-22 | 成都中玻复合材料有限公司 | Carbon fiber helicopter engine blade forming device and forming method |
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Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325658A (en) * | 2014-09-05 | 2015-02-04 | 航天材料及工艺研究所 | Making method of heavy gauge composite material main beam cap for fan blades |
| CN106903917A (en) * | 2015-12-22 | 2017-06-30 | 中材科技风电叶片股份有限公司 | Wind power generation blade and preparation method thereof |
| CN106985410A (en) * | 2017-05-10 | 2017-07-28 | 常州市新创复合材料有限公司 | Using the board making wind electricity blade crossbeam or the production system of auxiliary beam of pultrusion |
| CN106945306A (en) * | 2017-05-11 | 2017-07-14 | 常州市宏发纵横新材料科技股份有限公司 | Using the technique of the board making wind electricity blade of pultrusion |
| CN107813509A (en) * | 2017-09-21 | 2018-03-20 | 株洲时代新材料科技股份有限公司 | Wind electricity blade crossbeam spreads cloth method |
| CN107813509B (en) * | 2017-09-21 | 2020-06-26 | 株洲时代新材料科技股份有限公司 | Wind power blade girder laying method |
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Effective date of registration: 20231120 Address after: 9th Floor, Block C, Building B6, Dongsheng Science and Technology Park, No. 66 Xixiaokou Road, Haidian District, Beijing, 100192 Patentee after: SINOMATECH WIND POWER BLADE Co.,Ltd. Address before: Lianyungang City, Jiangsu province 222006 Lian Hai Road No. 195 Patentee before: LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GROUP Co.,Ltd. |