CN108501407B - Anti-deformation installation method for prefabricated part of blade root of large wind power blade - Google Patents
Anti-deformation installation method for prefabricated part of blade root of large wind power blade Download PDFInfo
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- CN108501407B CN108501407B CN201810295123.0A CN201810295123A CN108501407B CN 108501407 B CN108501407 B CN 108501407B CN 201810295123 A CN201810295123 A CN 201810295123A CN 108501407 B CN108501407 B CN 108501407B
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- blade root
- prefabricated part
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/681—Component parts, details or accessories; Auxiliary operations
- B29C70/683—Pretreatment of the preformed part, e.g. insert
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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
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- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a deformation-preventing mounting method for a blade root prefabricated part of a large-scale wind power blade, wherein a vacuum adhesive tape (3) is firstly pasted on the outer side of the tip end of the blade root prefabricated part; then 1 layer or multiple layers of glass fiber cloth (4) are paved between the tip of the blade root prefabricated part (1) and the shell mold (2) in a staggered way; then, the blade root prefabricated part (1) is installed on the shell mold (2), and a vacuum adhesive tape (3), an auxiliary air exhaust material (6) and a vacuum film (7) are respectively and sequentially paved on the two chordwise sides of the blade root prefabricated part (1) and between the blade root flange plate (5) and the end face of the shell mold (2), so that space sealing is realized between the blade root prefabricated part (1) and the shell mold (2); and (3) pumping the sealed space between the blade root prefabricated part (1) and the shell mold (2) into a negative pressure state by adopting vacuum equipment. The whole process of the invention has reasonable design, convenient operation, high working efficiency and low cost, and can attach the deformed blade root prefabricated member to the blade mould.
Description
Technical Field
The invention relates to a manufacturing method of a wind wheel blade of a wind driven generator, in particular to an anti-deformation installation method of a blade root prefabricated member of a large wind power blade, and belongs to the field of wind power generation.
Background
The wind power blade is a key component of the wind driven generator, and the blade root is responsible for transmitting the energy captured by the wind wheel blade to the generator set, so the blade root is very critical to the wind wheel blade. With the development of large-scale wind generating sets, the length and the weight of the blade are continuously increased, so that the load of the blade root is continuously increased, and the laying quality of the blade root has higher requirements on large-scale wind power blades. Through making the root of blade region alone, can the effectual control root of blade lay the quality to ensure whole blade product quality.
In the blade root prefabricated part forming process, because the resin solidification in-process can take place the shrink to and the glass steel sample takes place the shrink phenomenon in the cooling process, make blade root prefabricated part product can not paste with the casing mould closely, especially at blade root prefabricated part tip region clearance than great, lead to appearing unsettled phenomenon when laying the covering cloth layer. The existing wind power blade forming technology is basically a vacuum filling technology, after laying is finished, vacuum needs to be applied to the whole product area, the suspended area is attached to a mold under the action of vacuum pressure, and the soft glass fiber cloth layer is folded in the suspended area, so that the blade product is subjected to quality risk.
The current research mainly tends to reduce the deformation of the blade root prefabricated member in the manufacturing stage through the aspects of mold equipment, manufacturing process and the like so as to achieve the purpose of preventing deformation, and the deformation prevention implementation scheme of the deformed blade root prefabricated member is not reported. The invention aims to attach the deformed blade root prefabricated part to a blade mould on the premise of not reducing the product quality, thereby eliminating the wrinkles generated by suspension action in the skin laying process.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provide a novel multifunctional electric kettle which has reasonable structural design and convenient operation,
low cost, high working efficiency, and capability of performing the deformed or undeformed blade root prefabricated member without reducing the product quality
Under the premise, the blade root prefabricated part is firmly attached to the blade mould, so that the suspension effect in the covering layer laying process can be eliminated
The generated wrinkles make a very important technical progress.
The technical scheme is as follows: in order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
an anti-deformation installation method for a large wind power blade root prefabricated part comprises the following steps:
A. before the blade root prefabricated part is installed on the shell mold, a vacuum adhesive tape is firstly pasted on the outer side of the tip end of the blade root prefabricated part;
B. laying one or more layers of glass fiber cloth between the tip of the blade root prefabricated part and the shell mold in a staggered manner;
C. then, the blade root prefabricated part is installed on a shell mold, and a vacuum adhesive tape, an auxiliary air exhaust material and a vacuum film are respectively and sequentially paved on the two chordwise sides of the blade root prefabricated part and between a blade root flange plate and the end face of the shell mold, so that space sealing is realized between the blade root prefabricated part and the shell mold;
D. a vacuum device is adopted to pump a sealed space between the blade root prefabricated part and the shell mold into a negative pressure state, so that the blade root prefabricated part and the shell mold are kept in a close-fitting state, and particularly, a thin thickness area of the tip part of the blade root prefabricated part and the shell mold are in a close-fitting state;
E. and then laying a shell skin on the blade root prefabricated part and the shell mould.
As a preferred scheme, the deformation-preventing mounting method for the large wind power blade root prefabricated member comprises the following steps:
A. before the blade root prefabricated part is installed on the shell mold, a layer of vacuum adhesive tape with the thickness of less than 1mm is adhered to the outer side of the tip of the blade root prefabricated part;
B. laying one or more layers of glass fiber cloth between the tip of the blade root prefabricated part and the shell mold in a staggered manner;
C. then, the blade root prefabricated part is installed on a shell mold, and a vacuum adhesive tape, an auxiliary air exhaust material and a vacuum film are respectively and sequentially paved on the two chordwise sides of the blade root prefabricated part and between a blade root flange plate and the end face of the shell mold, so that space sealing is realized between the blade root prefabricated part and the shell mold;
D. a vacuum device is adopted to pump a sealing space between the blade root prefabricated part and the shell mold to a negative pressure state of more than 70kPa, so that the blade root prefabricated part and the shell mold are kept in a close-fitting state, and particularly, a tip part thinner thickness area of the blade root prefabricated part and the shell mold are in a close-fitting state;
E. and then laying a shell skin on the blade root prefabricated part and the shell mould.
Preferably, in the above anti-deformation installation method for the large wind turbine blade root prefabricated member, step B, the total areal density of the staggered layer paving between the tip of the blade root prefabricated member and the shell mold is 2000g/m2The tip of the prefabricated part of the blade root can be prevented from deforming and wrinkling when the shell is paved and vacuumized.
Has the advantages that: compared with the prior art, the anti-deformation installation method for the large wind power blade root prefabricated member provided by the invention has the following advantages:
the invention adopts the vacuum technology to 'adsorb' the blade root prefabricated part to the surface of the shell mold, thereby preventing the deformation of the blade root prefabricated part;
according to the invention, the vacuum adhesive tape is pasted on the outer surface of the tip part of the blade root prefabricated part, and the thickness of the vacuum adhesive tape is less than or equal to 1mm, so that the problem that the blade root prefabricated part cannot be tightly attached to a mold due to the fact that the vacuum adhesive tape is too thick can be avoided;
the invention is in the blade root prefabricated partThe total laying density between the tip part and the mould is 2000g/m2The glass fiber cloth below can avoid the fold caused by the step at the tail end of the blade root prefabricated part tip.
The deformation-preventing mounting method for the large wind power blade root prefabricated part provided by the invention has the advantages that the whole process design is reasonable, the operation is convenient, the working efficiency is high, the cost is low, the blade root prefabricated part which is deformed or not deformed can be attached to the blade mould on the premise of not reducing the product quality, so that the wrinkles generated due to the suspension effect in the skin laying process can be eliminated, and very important technical progress is obtained.
Drawings
Fig. 1 is a schematic diagram of the installation process of the present invention.
Fig. 2 is a partial structural schematic diagram of the installation process of the present invention.
Fig. 3 is a partial structural schematic diagram of the installation process of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to limit the scope of the invention, as various equivalent modifications of the invention will occur to those skilled in the art upon reading the present disclosure and fall within the scope of the appended claims.
As shown in fig. 1 to 3, a deformation-preventing installation method for a large wind turbine blade root prefabricated member comprises the following steps:
A. before the blade root prefabricated part 1 is installed on the shell mold 2, a layer of vacuum adhesive tape 3 with the thickness of less than 1mm is adhered to the outer side of the tip of the blade root prefabricated part;
B. the total surface density of the staggered layer pavement between the tip of the blade root prefabricated part 1 and the shell body mould 2 is 2000g/m2The following glass cloth 4;
C. then, the blade root prefabricated part 1 is installed on the shell mold 2, and the vacuum adhesive tape 3, the auxiliary air exhaust material 6 and the vacuum film 7 are respectively and sequentially paved on the two chordwise sides of the blade root prefabricated part 1 and between the blade root flange 5 and the end face of the shell mold 2, so that space sealing is realized between the blade root prefabricated part 1 and the shell mold 2;
D. a vacuum device is adopted to pump a sealed space between the blade root prefabricated part 1 and the shell mold 2 to a negative pressure state of more than 70kPa, so that the blade root prefabricated part 1 and the shell mold 2 are kept in a close-fitting state, and particularly, a tip part thinner thickness area of the blade root prefabricated part 1 and the shell mold 2 are in a close-fitting state;
E. the shell skin is then laid over the blade root preform 1 and the shell mould 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The anti-deformation installation method for the prefabricated part of the blade root of the large wind power blade is characterized by comprising the following steps of:
A. before the blade root prefabricated part (1) after resin curing is installed on the shell mold (2), a vacuum adhesive tape (3) is pasted on the outer side of the tip end of the blade root prefabricated part;
B. laying one or more layers of glass fiber cloth (4) between the tip of the blade root prefabricated member (1) after the resin is cured and the shell mold (2) in a staggered manner;
C. then installing the blade root prefabricated part (1) after the resin is cured on a shell mold (2), and respectively and sequentially paving a vacuum adhesive tape (3), an auxiliary air-extracting material (6) and a vacuum film (7) on the two chordwise sides of the blade root prefabricated part (1) after the resin is cured and between a blade root flange plate (5) and the end surface of the shell mold (2), thereby realizing space sealing between the blade root prefabricated part (1) after the resin is cured and the shell mold (2);
D. pumping a sealed space between the blade root prefabricated part (1) and the shell mold (2) after resin curing into a negative pressure state by adopting vacuum equipment, keeping the blade root prefabricated part (1) and the shell mold (2) in a close-fitting state after the resin curing, and enabling a thin thickness area of the tip part of the blade root prefabricated part (1) after the resin curing to be in a close-fitting state with the shell mold (2);
E. and then laying a shell skin on the blade root prefabricated part (1) and the shell mould (2) after the resin is cured.
2. The anti-deformation installation method for the large wind power blade root prefabricated part according to the claim 1, characterized by comprising the following steps of:
A. before the blade root prefabricated part (1) after resin curing is installed on a shell mold (2), a layer of vacuum adhesive tape (3) with the thickness of less than 1mm is firstly adhered to the outer side of the tip end of the blade root prefabricated part;
B. laying one or more layers of glass fiber cloth (4) between the tip of the blade root prefabricated member (1) after the resin is cured and the shell mold (2) in a staggered manner;
C. then installing the blade root prefabricated part (1) after the resin is cured on a shell mold (2), and respectively and sequentially paving a vacuum adhesive tape (3), an auxiliary air-extracting material (6) and a vacuum film (7) on the two chordwise sides of the blade root prefabricated part (1) after the resin is cured and between a blade root flange plate (5) and the end surface of the shell mold (2), thereby realizing space sealing between the blade root prefabricated part (1) after the resin is cured and the shell mold (2);
D. pumping a sealed space between the blade root prefabricated part (1) and the shell mold (2) after resin curing into a negative pressure state of more than 70kPa by adopting vacuum equipment, so that the blade root prefabricated part (1) and the shell mold (2) after the resin curing are kept in a close-fitting state, and a thin thickness area of the tip part of the blade root prefabricated part (1) after the resin curing is in a close-fitting state with the shell mold (2);
E. and then laying a shell skin on the blade root prefabricated part (1) and the shell mould (2) after the resin is cured.
3. The anti-deformation installation method for the large wind power blade root prefabricated member according to the claim 1 or 2, characterized in that in the step B, the total surface density of the staggered layer pavement between the tip of the blade root prefabricated member (1) after the resin is cured and the shell mold (2) is 2000g/m2The following glass fiber cloth (4)) Therefore, the blade root prefabricated part (1) after resin curing is prevented from being deformed and wrinkled at the tip part when the shell layer is vacuumized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810295123.0A CN108501407B (en) | 2018-04-04 | 2018-04-04 | Anti-deformation installation method for prefabricated part of blade root of large wind power blade |
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| CN201810295123.0A CN108501407B (en) | 2018-04-04 | 2018-04-04 | Anti-deformation installation method for prefabricated part of blade root of large wind power blade |
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| CN108501407A CN108501407A (en) | 2018-09-07 |
| CN108501407B true CN108501407B (en) | 2020-01-10 |
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| CN111098522A (en) * | 2019-11-11 | 2020-05-05 | 天津中车风电叶片工程有限公司 | Tool and method for rapidly forming root end face of punching type wind power blade |
| CN112922781B (en) * | 2021-01-29 | 2023-02-17 | 中材科技风电叶片股份有限公司 | Wind driven generator and blade mass distribution control system, method and equipment thereof |
| CN113071115A (en) * | 2021-04-16 | 2021-07-06 | 上海电气风电集团股份有限公司 | Installation and positioning method for blade root prefabricated part |
| CN113147055B (en) * | 2021-04-28 | 2022-06-17 | 湖北航天技术研究院总体设计所 | Preparation method of composite material shell of solid rocket engine |
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| FR2699499B1 (en) * | 1992-12-23 | 1995-03-10 | Eurocopter France | Blade of thermoplastic composite, in particular for a faired tail rotor of a helicopter, and its manufacturing process with injection step. |
| CN201677434U (en) * | 2010-05-28 | 2010-12-22 | 天津明阳风能叶片技术有限公司 | Mold assembly vacuum setting structure of megawatt-level wind machine blade |
| WO2011156947A1 (en) * | 2010-06-13 | 2011-12-22 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing blade root of megavatt level wind generator |
| CN103009643A (en) * | 2012-11-22 | 2013-04-03 | 昆山华风风电科技有限公司 | Rear edge sticking technology for fan blade |
| CN106029347B (en) * | 2013-12-23 | 2018-04-17 | 维斯塔斯风力系统有限公司 | Wind turbine blade |
| EP3257646A1 (en) * | 2016-06-14 | 2017-12-20 | LM WP Patent Holding A/S | Blade mould for manufacturing a blade shell part of a wind turbine blade and related method |
| CN106426988B (en) * | 2016-11-18 | 2018-11-09 | 中复连众（哈密）复合材料有限公司 | Prevent root end face from the preparation method of the MW class wind turbine pre-embedded bolt root of blade in cavity occur |
| CN206718516U (en) * | 2017-04-06 | 2017-12-08 | 南通东泰新能源设备有限公司 | Wind electricity blade leading edge bonds flange mould fast-positioning device |
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Address after: No. 23 Funing Yancheng City County of Jiangsu Province, 224400 Concord Avenue Patentee after: SINOMATECH (FUNING) WIND POWER BLADE Co.,Ltd. Address before: 224400 23 Xin Xin Road, Funing County, Nanjing, Jiangsu Patentee before: SINOMATECH (FUNING) WIND POWER BLADE Co.,Ltd. |
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