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A kind of anti-erosion coating for wind power blade leading edge and preparation method thereof

A wind turbine blade and anti-erosion technology, applied in coatings, wind power generation, anti-corrosion coatings, etc., can solve the problems of increased maintenance costs, damage to the integrity of wind turbine blades, reduced aerodynamic performance and operational reliability, and improved adhesion. , High anti-corrosion performance and adhesion, convenient construction effect

Active Publication Date: 2022-07-08
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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  • A kind of anti-erosion coating for wind power blade leading edge and preparation method thereof
  • A kind of anti-erosion coating for wind power blade leading edge and preparation method thereof
  • A kind of anti-erosion coating for wind power blade leading edge and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

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

[0053] 1) Prepare the substrate 5, pre-treat the surface of the leading edge of the blade, and use sandpaper to polish it. After completion, use compressed air to blow for 5-10 minutes, decontamination, oil, and moisture, and check the surface quality. There should be no obvious defects on the surface. Defects such as meat, cracks and pits.

[0054] 2) coating the bottom layer 1, the above-mentioned epoxy coating 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. After curing, it is properly repaired and polished.

[0055] 3) Paint the intermediate layer 2, control the...

Embodiment 1

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

[0060] The intermediate 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. The specific proportions are as follows shown:

[0061]

[0062] Component A, Component B, Component C and Component D are proportioned according to the above-mentioned quality. The proportioning sequence is: firstly prepare Component A, and then add the homogeneous mixture of Component B and Component C to Group A Finally, add component D and mix well.

[0063] Described leveling layer 3 is made of B component, C component, E component and F component, and the proportion is as shown in the following table:

[0064]

[0065] Component B, Component C, Component E and Component F are proportioned according to the above-mentioned quality. The order of proportioning is: Mix Componen...

Embodiment 2

[0074] Compared with Example 1, Example 2 mainly changed the epoxy resin E51 in components A and B to epoxy resin E44, the proportions of other components were unchanged, and the coating process was the same.

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Abstract

The invention discloses an abrasion-resistant coating for the leading edge of a wind power blade and a preparation method thereof, and belongs to the technical field of abrasion protection for wind turbines. The bottom layer is a two-component solvent-based epoxy coating that can be cured at room temperature, and the middle layer is a silicon carbide-reinforced polyurethane-modified epoxy coating. The composition of the leveling layer makes it self-leveling and can provide smooth aerodynamics The surface and surface layer are made of solvent-based polyurethane coating, which can meet the requirements of high weather resistance of wind turbine blades. The coating prepared by the invention can improve the wear resistance of the leading edge of the wind power blade, and at the same time, the coating system has high adhesion, the anti-corrosion performance meets the requirements of the index, and the construction is convenient, and can effectively solve the abrasion problem of the leading edge of the wind power blade , so as to achieve long-term protection, improve the safety performance of wind turbines, and reduce the maintenance times and costs of wind turbines.

Description

technical field [0001] The invention belongs to the technical field of abrasion protection for wind turbines, and relates to an abrasion-resistant coating for the leading edge of a wind turbine blade and a preparation method thereof. Background technique [0002] Because wind turbines are mostly distributed in deserts, mountains, seas and other places with harsh environments, the blades, which are key components of wind turbines, have prominent 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 blades, the leading 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 blade length of the wind turbine is generally 50-80 meters, and the linear speed of the blade is generally 60-80m / s, which is equivalent to a speed of 200-300km / h. Raindrops, gravel and d...

Claims

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Application Information

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Patent Type & Authority Patents(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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