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Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process

A technology for pre-embedding bolts and fan blades, applied in the field of blades, can solve problems such as increased weight and difficulty, and achieve the effects of high root strength, accurate size and improved product production efficiency

Active Publication Date: 2014-07-09
LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, domestic fan blades generally adopt the hole-drilling method to install the connecting bolts at the root of the blade. This method is more successful for fan blades with a small load on the root of the fan blade and a large number of bolts installed. However, with the wind turbine power With the increase of the fan blade, the length of the fan blade and its root size are also getting bigger and bigger, and its weight is also increasing a lot, which causes the fan blade root connection bolts to bear a greater load, and its The performance requirements are also higher, and it is more difficult to develop root bolts that meet the requirements, and the development of methods to enhance root performance becomes the way to solve the problem

Method used

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  • Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process
  • Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process
  • Method for manufacturing embedded bolt sleeve at root of fan blade by pultrusion process

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0028] A method for pre-embedding a bolt sleeve at the root of a fan blade manufactured by a pultrusion process, characterized in that it comprises the following steps:

[0029] Preparation of prefabricated blocks for embedded bolt sleeves:

[0030] a. If figure 1 As shown, first take the metal bolt sleeve (1), and use the first connecting piece (4-1) to connect the metal bolt sleeve (1) and the transition section (2), and the transition section (2) is made of steel pip...

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Abstract

The invention discloses a method for manufacturing an embedded bolt sleeve at the root of a fan blade by a pultrusion process. The method comprises preparation of an embedded bolt sleeve precast block, and molding of the embedded bolt sleeve precast block and a fan blade. The embedded bolt sleeve precast block is fabricated by the pultrusion process, the pultrusion process has the advantages of continuity, high industrial degree and high production efficiency, and the fabricated embedded bolt sleeve has the advantages of stable quality, high size precision, large strength and the like, and is suitable for the fan blade with large load at the root and with connection to a large quantity of bolts. The problems of incontinuity in laying, interlayer asymmetry, high probability of wrinkles and air bubbles and the like caused by manual laying and pasting can be overcome.

Description

technical field [0001] The patent of the present invention relates to a method for manufacturing the root of a fan blade by using a pre-embedded bolt sleeve, and specifically relates to a method of manufacturing a pultruded bolt sleeve pre-embedded part through a glass fiber reinforced plastic pultrusion molding process, using the pultruded bolt sleeve pre-embedded parts. Embedded parts arrangement The blade root and the blade shell are integrally poured to form a method for making the embedded bolt sleeve at the blade root. Background technique [0002] China's wind power industry started in 2005. After 9 years of rapid development, the products of wind turbines have been rapidly enriched, and there are dozens of models. The wind fields covered by it range from super class one to weak class four. [0003] The wind rotor blades on the wind turbine developed and produced by Lianyungang Zhongfu Lianzhong Composite Materials Group Co., Ltd. The length has been extended from 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52
CPCB29C70/342B29C70/521
Inventor 黄辉秀王志伟刘卫生于永峰张毅莉任梅英
Owner LIANYUNGANG ZHONGFU LIANZHONG COMPOSITES GRP
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