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Composite cover and blades

A protective layer and blade technology, applied in coatings, wind turbines, wind power generation, etc., can solve the problems of easy cracking and solidification, difficulty in building a thick protective layer, easy inclusion of air bubbles, etc., to achieve reliable protection and easy maintenance of the leading edge Effect

Active Publication Date: 2020-03-17
JIANGSU GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem with coating technology is that it is usually not easy to build a thick protective layer, which is prone to cracking and poor curing. In addition, multiple applications may be required to seriously affect the efficiency
[0005] To sum up, the advantage of protective film technology is that the film is prefabricated, and the thickness and thickness uniformity are guaranteed, but the weather resistance is poor, and it is easy to contain air bubbles during construction; the advantage of coating technology is that it has good weather resistance, but it is not easy Control the thickness evenly, therefore, both have advantages and disadvantages

Method used

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  • Composite cover and blades
  • Composite cover and blades
  • Composite cover and blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 It is a schematic diagram of the composite protective layer 1 of Example 1 of the present invention. Depend on figure 1 It can be known that the composite protective layer 1 includes a coating 11 and a prefabricated elastomer layer 12 , and the coating 11 is coated on the upper surface of the prefabricated elastomer layer 12 . in addition, Figure 4 It is a schematic diagram of a blade 20 pasted with the composite protective layer 1 of the present invention on the leading edge. combine figure 1 and Figure 4 It can be seen that the composite protective layer 1 is provided on the leading edge surface of the blade 20 , and the lower surface of the prefabricated elastomer layer 12 is fixed on the leading edge surface of the blade 20 . exist figure 1 Among them, 2 represents glass fiber reinforced plastic, which is a material constituting the front edge surface of the blade 20 . Various preferred parameters of the composite protective layer 1 of this embodim...

Embodiment 2

[0048] figure 2 It is a schematic diagram of the composite protective layer 1 of Example 2 of the present invention. The difference between the composite protective layer 1 of this embodiment and the composite protective layer 1 of the first embodiment is that the prefabricated elastomer layer 12 is provided with a plurality of holes 121 evenly distributed, and the material of the coating 11 is filled in the holes 121 .

[0049] Specifically, the prefabricated elastomer layer 12 provided with a plurality of holes 121 is pasted on the FRP 2 . Bubbles generated during the film sticking process can be discharged through the holes 121 . Then, the polymer material is painted. During the process of painting, the polymer material will fill the hole 121 and form a coating 11 covering the prefabricated elastomer layer 12 on the surface of the prefabricated elastomer layer 12 .

[0050] In this embodiment, the plurality of holes 121 are uniformly distributed on the prefabricated elas...

Embodiment 3

[0055] image 3 It is a schematic diagram of the composite protective layer 1 of Example 3 of the present invention. The difference between the composite protective layer 1 of this embodiment and the composite protective layer 1 of embodiment 2 is that, for the step 122 formed by the edge of the prefabricated elastomer layer 12 and the surface of the FRP 2, the material of the coating 11 fills smoothly and The steps 122 are covered.

[0056] With such a configuration, the step 122 at the edge of the prefabricated elastomer layer 12 is filled and covered by the material of the coating 11 , so the transition is smooth, and the impact on the aerodynamic efficiency caused by the step effect can be reduced.

[0057] It should be noted that although in this embodiment, the material of the coating 11 smoothly fills and covers the step 122 formed by the edge of the prefabricated elastomer layer 12 and the surface of the FRP 2 , the present invention is not limited thereto. The mater...

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Abstract

The invention provides a composite protection layer and a blade. The composite protection layer comprises a coating and a prefabricated elastomer layer, and the coating is coated to the upper surfaceof the prefabricated elastomer layer. According to the composite protection layer and the blade, the composite protection layer having the reliable protection capacity and the blade having the reliable protection capacity and enabling the front edge maintaining and repairing to be easy are provided.

Description

technical field [0001] The invention relates to blade technology, in particular to a blade leading edge protection structure. Background technique [0002] As the core component for capturing wind energy, wind turbine blades are huge in size and expensive to manufacture. If the leading edge of the wind turbine blades is eroded, it will not only affect the power generation of the unit, but also bring hidden dangers to the safe operation of the unit. Existing studies have shown that moderate leading edge erosion will cause a loss of more than 10% of annual power generation. If the leading edge erosion cannot be repaired in time, the damage to the leading edge of the blade will be further aggravated within 2-3 years, which will eventually lead to structural damage of the blade and bring greater risks and losses. With the continuous enlargement of large fan blades, the speed of the tip of the blade is continuously increased, which increases the intensity of rain erosion on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06
CPCF03D1/0675F05B2280/6011Y02E10/72
Inventor 贾智源李小明
Owner JIANGSU GOLDWIND SCI & TECH CO LTD