Method for maintaining blade of wind generating set

A technology for wind turbines and blades is applied in the field of maintenance of blades of wind turbines, which can solve the problems of unhelpful internal structure and poor effect, and achieve the effects of good internal maintenance, good maintenance effect and convenient maintenance.

Active Publication Date: 2015-12-30
GUODIAN UNITED POWER TECH LIANYUNGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology can only clean the outside of the blade and simply repair the paint on the surface, which has a poor effect and basically does not help the internal structure of the defect.

Method used

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  • Method for maintaining blade of wind generating set
  • Method for maintaining blade of wind generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, with reference to figure 1 and figure 2 , a maintenance method for wind turbine blades, the steps of which are,

[0022] (1) Form a cutting area around the damaged area of ​​the blade shell 1 except for the double-beam structure and the web structure, dry the cutting area and clean the surface, and perform circumferential cutting along the periphery of the damaged area after cleaning. The next square area 3 containing the damaged area leaves a cut on the blade shell 1, and the cutting surface at the cut forms a gradient area 2 that is wide on the outside and narrow on the inside;

[0023] (2) Perform wedge grinding and type repair on the corners of the gradient area 2 first, and then perform internal damage treatment on the damaged area in the cut square area 3;

[0024] (3) After the internal damage treatment is completed, use the FRP strip 4 to draw a bonding line in the middle of the FRP strip 4, and the FRP strip 4 on one side of the bonding line is...

Embodiment 2

[0028] Embodiment 2, in the maintenance method described in Embodiment 1: the width of the glass fiber reinforced plastic bar 4 used is 40mm.

Embodiment 3

[0029] Embodiment 3, in the maintenance method described in Embodiment 1: the width of the glass fiber reinforced plastic bar 4 used is 60mm.

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Abstract

The invention discloses a method for maintaining a blade of a wind generating set. A cutting area is formed around a damaged area, beyond a twin-beam structure and a web plate structure, of a blade shell, drying and surface cleaning are conducted on the cutting area, circumferential beveling is conducted to cut off a square area containing the damaged area, so that a trapezoid area which is wide outside and narrow inside is formed, wedge-shaped polishing, shape repairing and interior damage treatment are conducted on the upper corners of the trapezoid area, a fiberglass bar is bonded to the blade shell and the square area through a binder, hand lay-up resin is smeared on the trapezoid area, the square area is installed at the original position and then roughening is conducted on the periphery, at least two layers of glass fiber cloth is pasted with hands and compacted with a brush roll, and polishing is conducted with an angle grinder till the glass fiber cloth is in smooth transition with an original molded surface. According to the method, by cutting off the interior damaged area of the blade shell, maintenance is facilitated; due to precise polishing of a maintained portion and filling and precise bonding after maintenance, interior maintenance and overall follow-up operation are better achieved. The method is especially suitable for out-of-factory maintenance of blades which have been sent to a wind field.

Description

technical field [0001] The invention relates to an out-of-factory maintenance method for wind field blades that have been launched and operated, in particular to a maintenance method for wind power generator blades. Background technique [0002] With the increasing efficiency of large-megawatt blade production and the diversification of large-megawatt blades in the wind field operating environment, the production efficiency and quality requirements of the blades are also getting higher and higher. The accumulation of factors such as the natural environment produces various internal and external problems. The maintenance method will directly affect the subsequent operation quality of the blade, which can improve the working efficiency of the blade and improve the effect of subsequent operation. The prior art can only clean the outside of the blade and repair the paint on the simple surface, which has a poor effect and basically does not help the internal structure of the defe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C73/10
Inventor 任拓覃盛琼袁维瀚周行野张鑫
Owner GUODIAN UNITED POWER TECH LIANYUNGANG CO LTD
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