Unlock instant, AI-driven research and patent intelligence for your innovation.

Fan blade root embedded bolt sleeve suitable for pultrusion process and preparation method thereof

A technology of fan blades and pre-embedded bolts, which is applied in the field of pre-embedded bolt sleeves, can solve the problems of difficult bolts at the root, increased weight, and large root size, etc., and achieves the problems of discontinuous laying, large load-bearing capacity, and stable quality Effect

Active Publication Date: 2018-09-25
SINOMATECH WIND POWER BLADE
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic wind turbine blades generally use root drilling to install blade root connecting bolts. This method is more successful for fan blades with a small load on the root of the fan blade and a small number of bolts installed. However, with the wind turbine power With the increase of the fan blade, the length of the supporting fan blade and its root size are also getting larger and larger, and its weight is also increasing a lot, which causes the connecting bolts at the root of the fan blade to bear a greater load, which affects its performance. The requirements are higher, and it is more difficult to develop root bolts that meet the requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fan blade root embedded bolt sleeve suitable for pultrusion process and preparation method thereof
  • Fan blade root embedded bolt sleeve suitable for pultrusion process and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, 1. A pre-embedded bolt sleeve at the root of a fan blade suitable for the pultrusion process, which includes a metal bolt sleeve (1), the outer surface of the metal bolt sleeve (1) is provided with a circumferential groove (2), and the metal bolt sleeve (1) One end has a connection port (3), the connection port (3) is connected with the fixed-length connector (4), and the other end of the fixed-length connector (4) is connected with another metal bolt sleeve (1) of the same structure, The above components are used as the inner insert of the embedded bolt sleeve at the root of the fan blade. The outer layer of the inner insert is formed by the pultrusion process to form a composite material layer to obtain a pultruded composite product, and then the pultruded product is placed in the axial middle position of the pultruded product Beveled and then trimmed to obtain the embedded bolt sleeves at the roots of two fan blades.

[0036] 2. The above-ment...

Embodiment 2

[0050] 1. A pre-embedded bolt sleeve at the root of a fan blade suitable for pultrusion process, which includes a metal bolt sleeve (1), the outer surface of the metal bolt sleeve (1) is provided with a circumferential groove (2), and the metal bolt sleeve (1) One end has a connection port (3), the connection port (3) is connected with the fixed-length connector (4). The above components are used as the inner insert of the embedded bolt sleeve at the root of the fan blade, which is formed by the outer layer of the inner insert through the pultrusion process The composite material layer is used to prepare a pultruded composite product, and the pultruded product is obliquely cut and trimmed to obtain a fan blade root embedded bolt sleeve product.

[0051] 2. The method for preparing the embedded bolt sleeve at the root of the fan blade suitable for the pultrusion process includes the following steps:

[0052] a. First take the bolt sleeve (1) with the circumferential groove (2) on th...

Embodiment 3

[0064] 1. An embedded bolt sleeve at the root of a fan blade suitable for pultrusion process, which includes a metal bolt sleeve (1). The outer surface of the metal bolt sleeve (1) is provided with an annular groove (2) as the embedded root of the fan blade The inner insert of the bolt sleeve is formed by a pultrusion process to form a composite material layer on the outer layer of the inner insert to obtain a pultruded composite product. After the pultruded product is corrected, a pre-embedded bolt sleeve product at the root of the fan blade is obtained.

[0065] 2. The method for preparing the embedded bolt sleeve at the root of the fan blade suitable for the pultrusion process includes the following steps:

[0066] 1) First take the bolt sleeve (1) with the circumferential groove (2) on the surface, and then perform sandblasting treatment on the surface of the circumferential groove (2) to make the surface roughness reach Ra6.3 or more;

[0067] 2) Then wind the fiber (6) on the c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fan blade root embedded bolt sleeve suitable for a pultrusion process and a preparation method for the fan blade root embedded bolt sleeve. The fan blade root embedded bolt sleeve comprises a metal bolt sleeve (1), wherein an annular groove (2) is formed in the outer surface of the metal bolt sleeve (1); a connection end opening (3) is formed in one end of the metal bolt sleeve (1) and connected with a fixed-length connecting piece (4); the other end of the fixed-length connecting piece (4) is connected with the other metal bolt sleeve (1) with the same structure. An assembly serves as an embedded part of the fan blade root embedded bolt sleeve, a composite material layer is formed on an outer layer of the embedded part through the pultrusion forming process, a pultrusion composite product is prepared, and inclined cutting and trimming are performed to obtain the fan blade root embedded bolt sleeve. The root embedded bolt sleeve is reasonable in structure, high in strength, large in bearing capacity, long in service life and particularly suitable for a large-sized and high-power fan blade. The preparation method for the fan blade root embedded bolt sleeve is high in production efficiency, and the fan blade root embedded bolt sleeve prepared with the method has the advantages of stable quality, high size precision, high strength and the like.

Description

Technical field [0001] The invention patent relates to a pre-embedded bolt sleeve for the root of a fan blade, in particular to a pre-embedded bolt sleeve at the root of a fan blade suitable for a pultrusion process and a preparation method thereof. Background technique [0002] China's wind power industry started in 2005, after nearly 10 years of rapid development, wind turbine products have been rapidly enriched, and there are already dozens of models. The wind fields covered by it range from super one to weak four. [0003] The wind turbine blades on the wind turbines developed and produced by Lianyungang Zhongfu Lianzhong Composite Materials Group Co., Ltd. extend from 31 meters to 75 meters in length. Wind turbine blades are one of the key components for transforming wind energy. The smoothness of its operation is extremely important for wind turbine power generation. The wind turbine blades of horizontal axis wind turbines are connected to the wind turbine hub through the us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/52F03D80/00
CPCB29C70/52Y02P70/50
Inventor 乔光辉黄辉秀王志伟于永峰田丰刘卫生梁颖
Owner SINOMATECH WIND POWER BLADE