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Wind turbine blade manufacturing method

A technology of wind power blades and manufacturing methods, which is applied in the field of wind power blade manufacturing to achieve the effects of avoiding hidden dangers in quality, ensuring reliability, and good reliability

Active Publication Date: 2017-08-04
保定华翼风电叶片研究开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for parts with many layers of fabric, usually the area near the root of the blade, due to the softness of the fiber-reinforced fabric, wrinkles will still appear during laying, vacuuming and resin infusion

Method used

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  • Wind turbine blade manufacturing method
  • Wind turbine blade manufacturing method
  • Wind turbine blade manufacturing method

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0049] Such as Figure 1~5 As shown, the root of the fan blade is usually cylindrical, and the length is between 1-2m. For blades produced by pre-embedded methods, such as Figure 5 As shown, there are pre-embedded bolt sleeves 70 at the root of the wind turbine blade, and the gaps between adjacent bolt sleeves 70 are filled with FRP wedge strips 80 . Because the fiberglass wedge strips 80 with beveled angles are used between the pre-embedded bolt sleeves 70 , there is a certain difference in the shape of the laminate below the bolt sleeve 70 at the blade root and the layer above it. The shape of the layer under the blade root bolt sleeve 70 is the same as that of the blade mold surface, which is a cylindrical surface; the layer above the blade root b...

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Abstract

The invention discloses a wind turbine blade manufacturing method. Rigid cushion blocks are embedded into a blade root pavement layer to inhibit the deformation of a soft fibre-reinforced fabric. The rigid cushion blocks are divided a bolt sleeve lower cushion block and a bolt sleeve upper cushion block because of different forms of the rigid cushion blocks; a lower rigid control cushion block is manufactured by taking a blade root cylindrical section of a blade mould as a mould, so that the obtained cushion block shape has good matching property with the blade mould; an upper rigid control cushion block is manufactured by adopting a special mould; through reasonable design of the mould, the fit property between the cushion block and a bolt sleeve upper pavement layer can be ensured. The cushion block is manufactured by adopting pouring resin and the fibre-reinforced fabric which are used for producing the blade, so that the compatibility between the cushion block and the blade can be effectively ensured; an interface problem is avoided. The cushion block surface is perforated, so that the resin can penetrate through the cushion block smoothly and permeate a fabric pavement layer below; the resin pouring process of the blade is not affected. The upper surface and the lower surface of the cushion block are both protected by de-moulding cloth, so that the pollution of dust can be effectively avoided, and the cushion block is beneficial to storing for a long time.

Description

technical field [0001] The present invention relates to the field of manufacturing wind power blades, in particular to a manufacturing method for wind power blades, which can effectively control the possible deformation and wrinkles of fiber reinforced fabrics at the root of the blades during the production process, and avoid reducing the load bearing capacity of fiber reinforced fabrics due to the existence of wrinkles Ability to avoid quality hazards to the operation of wind turbine blades. Background technique [0002] Wind power blades are key components of wind turbines, and the quality of the blades is crucial to the reliability of wind turbine operation. At present, there are two main manufacturing processes for wind power blades, one is prepreg molding process, and the other is vacuum infusion molding process, which is more widely used. The wind turbine blades manufactured by the vacuum infusion molding process usually use fiber reinforced fabrics. In order to maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B29C70/54B29C70/68B29L31/08
CPCB29C70/36B29C70/54B29C70/68B29C70/683B29L2031/082
Inventor 徐宇谢存存
Owner 保定华翼风电叶片研究开发有限公司
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