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Abrasion-resistant coating for front edge of wind power blade and preparation method of abrasion-resistant coating

An anti-corrosion technology for wind turbine blades, applied in coatings, wind power generation, anti-corrosion coatings, etc., can solve problems such as increased maintenance costs, damage to the integrity of wind turbine blades, reduced aerodynamic performance and operational reliability, and achieves improved adhesion , high anti-corrosion performance and adhesion, and convenient construction

Active Publication Date: 2021-10-22
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the leading edge of the blade is generally protected by coating. If the coating is eroded and damaged, the integrity of the wind turbine blade will be destroyed.
In addition, aerodynamics requires the surface of the blade to have a high degree of flatness, and the abrasive damage of the coating will also lead to a reduction in aerodynamic performance and operational reliability, resulting in a significant increase in maintenance costs

Method used

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  • Abrasion-resistant coating for front edge of wind power blade and preparation method of abrasion-resistant coating
  • Abrasion-resistant coating for front edge of wind power blade and preparation method of abrasion-resistant coating
  • Abrasion-resistant coating for front edge of wind power blade and preparation method of abrasion-resistant coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] The preparation method of the above-mentioned anti-corrosion coating for the leading edge of wind turbine blades comprises the following steps:

[0053] 1) Prepare the substrate 5. Pre-treat the surface of the leading edge of the blade, which can be polished with sandpaper. After completion, use compressed air to blow for 5 to 10 minutes, decontaminate, degrease and dehumidify, and check the surface quality. There must be no obvious defects on the surface. Defects such as meat, cracks and pits.

[0054] 2) To coat the bottom layer 1, the above-mentioned epoxy paint is evenly stirred, and evenly coated on the surface of the substrate 5 to obtain the bottom layer 1. The coating method of spraying can be used, and the temperature of the surface of the substrate 5 during the coating process is not lower than 10 ℃, the thickness of the bottom layer 1 ranges from 100 to 150um, and it should be properly repaired and polished after curing.

[0055] 3) Coating the middle layer ...

Embodiment 1

[0059] The bottom layer 1 is a two-component solvent-based epoxy coating cured at room temperature.

[0060] The middle layer 2 is an anti-corrosion coating, which is a silicon carbide-reinforced polyurethane-modified epoxy coating, and is composed of components A, B, C and D, and the specific ratio is as shown in the following table Shown:

[0061]

[0062] The dosages of components A, B, C and D are mixed according to the above mass, and the proportioning sequence is as follows: first prepare component A, and then add the uniform mixture of components B and C to group A part, and finally add component D and mix well.

[0063] The leveling layer 3 is made of components B, C, E and F, and the proportioning ratio is shown in the following table:

[0064]

[0065] The dosages of components B, C, E and F are mixed according to the above mass, and the proportioning sequence is: mix components B and C evenly, then add component E, and finally add component F The components...

Embodiment 2

[0074] Compared with Example 1, Example 2 mainly changes the epoxy resin E51 in components A and B to epoxy resin E44, the ratio of other components remains unchanged, and the coating process is the same.

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Abstract

The invention discloses an abrasion-resistant coating for the front edge of a wind turbine blade and a preparation method of the abrasion-resistant coating, and belongs to the technical field of abrasion protection of wind turbine generators. A bottom layer adopts a normal-temperature curing type two-component solvent type epoxy coating, a middle layer adopts a silicon carbide reinforced polyurethane modified epoxy coating, the components of a leveling layer enable the wind turbine blade to have a self-leveling characteristic and can provide a smooth aerodynamic surface, and a surface layer adopts a solvent type polyurethane coating and can meet the requirement of high weather resistance of the wind turbine blade. The prepared coating prepared by the method can improve the wear resistance of the front edge of the wind turbine blade, and meanwhile, the coating system has high adhesive force, the corrosion resistance meets index requirements, construction is convenient, the problem of abrasion of the front edge of the wind turbine blade can be effectively solved, long-period protection is achieved, the safety performance of a wind turbine generator is improved, and the maintenance frequency and cost of the wind turbine generator are reduced.

Description

technical field [0001] The invention belongs to the technical field of wind turbine erosion protection, and relates to an abrasion-resistant coating for the leading edge of a wind turbine blade and a preparation method thereof. Background technique [0002] Since wind turbines are mostly distributed in places with harsh environments such as deserts, mountains, and seas, the blades, which are key components of wind turbines, have serious abrasion problems, and it is difficult for ordinary protective layer materials to achieve long-term protection. According to statistics, after 3 to 5 years of service for megawatt-class blades, the front edge of the blade is severely eroded, and the body is partially damaged, which cannot meet the high requirements of protection for 20 years. [0003] The length of the blades of wind turbines is generally 50-80 meters, and the linear speed of the blades is generally 60-80m / s, which is equivalent to the speed of 200-300km / h. Raindrops, gravel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D5/00B05D7/24B05D1/36C09D175/04C09D163/02C09D7/61C09D5/08
CPCB05D5/08B05D5/00B05D7/24B05D1/36B05D7/584C09D175/04C09D163/00C09D7/61C09D5/08B05D2451/00B05D2504/00B05D2601/20C08L63/00C08K3/34C08K3/36Y02E10/72
Inventor 李太江李巍王彩侠李聚涛李生文孙琦
Owner XIAN THERMAL POWER RES INST CO LTD
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