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Method for identifying blade cracks of wind driven generator

A technology for cracks in wind turbines and blades, which is applied in the monitoring of wind turbines, wind turbines, engines, etc. It can solve the problems of insufficient clarity of tiny cracks, long space distance, and the need to improve the accuracy of visual recognition of blade cracks. Low cost, easy implementation, and improved accuracy

Pending Publication Date: 2022-05-10
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, due to factors such as the long distance in space and the lack of clarity of tiny cracks, the accuracy of visually identifying cracks in blades needs to be improved.

Method used

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  • Method for identifying blade cracks of wind driven generator
  • Method for identifying blade cracks of wind driven generator

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.

[0029] The identification method of the wind generator blade crack of the present invention comprises:

[0030] S1: During the blade manufacturing process, the second layer of composite material adjacent to the blade surface layer is colored with a colorant before laying up the layer, and the coloring is different from the color of the blade surface layer;

[0031] S2: In the process of blade transportation and hoisting, the surface of the blade is inspected visually; when the wind turbine is running, the surface of the blade is detected by using the UAV to collect image information of the blade surface; when the wind turbine is shut down, use the telescope to visually inspect Or the UAV collects the image information of the blade surface to detect the blade surface; when it is found tha...

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Abstract

The invention discloses a method for identifying blade cracks of a wind driven generator, and belongs to the technical field of wind power generation. In the manufacturing process of the blade, a second layer of composite material adjacent to the surface layer of the blade is colored by using a coloring agent before layering, and the color is different from the color of the surface layer of the blade; in the blade transporting and hoisting process, the surface of the blade is detected visually; when the wind turbine generator runs, the unmanned aerial vehicle is used for collecting blade surface image information to detect the blade surface; when the wind turbine generator is shut down, blade surface image information is collected through a telescope or an unmanned aerial vehicle to detect the blade surface; and when the color different from the surface color of the leaf appears in a certain area, judging that cracks appear on the surface of the leaf. The method is easy and convenient to operate and low in cost, the blade crack identification accuracy and speed can be remarkably improved, and safe and stable operation of the wind generating set is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a method for identifying cracks in blades of a wind power generator. Background technique [0002] The blade is the key component of the wind turbine to capture wind energy. It is a thin shell structure made of composite materials, mostly laminated. Its good design, reliable quality and superior performance are the decisions to ensure the normal and stable operation of the generator set factor. [0003] However, the blades have been affected by various harsh factors such as sand erosion, ultraviolet radiation, atmospheric oxidation and corrosion, or ocean humid air corrosion for a long time, and the blades are prone to fatigue damage due to long-term waving, shimmy, and torsion. Different regions and different degrees of crack damage appeared. [0004] At present, the crack damage of blades is generally detected by visual method, hammering method, ultr...

Claims

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Application Information

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IPC IPC(8): F03D17/00
CPCF03D17/00Y02P70/50
Inventor 梁晏萱沙德生张庆王玉玉李芊邹歆
Owner HUANENG CLEAN ENERGY RES INST
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