CN-117103746-B - Strengthening method of blade of wind generating set

CN117103746BCN 117103746 BCN117103746 BCN 117103746BCN-117103746-B

Abstract

The invention relates to a strengthening method of a blade of a wind generating set, which comprises the steps of polishing the surface of a blade body, adhering a paper taking adhesive tape to the blade body and forming an annular structure to outline a polished area of the blade body into a treatment area, coating an elastic protection material to the treatment area to form an elastic protection layer, adhering an anti-icing protection layer to the elastic protection layer, and removing the paper adhesive tape. Through after the elastic protection material of blade body surface coating, apply the anti-icing protective layer to form the protective structure of range upon range of, when the blade rotates, the elastic protection layer can provide elastic buffering for hitting rainwater or grit on the blade, thereby protect the blade body not damaged, and the anti-icing protective layer can also reduce the ice adhesion strength on blade body surface when providing basic protection, thereby prevents the adhesion of ice layer. In addition, the method can reduce the difficulty of strengthening the blades of the in-service unit and improve the construction efficiency.

Inventors

LI CUNYI
WANG HAIDONG
ZHOU RANRAN
FAN ZICHAO
ZHANG XINGANG
BAO DAEN
YUE JIE
CHEN XIN
QIAO SHUAI
Kuang Zhaoyu
Guo Haisi

Assignees

龙源(北京)新能源工程技术有限公司

Dates

Publication Date: 20260505
Application Date: 20230726

Claims (8)

1. A method of strengthening a blade of a wind power generator set, the blade comprising a blade body, the method comprising the steps of: Polishing the surface of the blade body; The paper taking adhesive tape is adhered to the blade body and forms an annular structure so as to outline the polished area of the blade body into a treatment area; Coating an elastic protection material on the treatment area, coating a first part of the elastic protection material on the treatment area, semi-solidifying to form a first intermediate layer, coating a second part of the elastic protection material on the first intermediate layer, semi-solidifying to form a second intermediate layer, and forming an elastic protection layer together with the first intermediate layer and the second intermediate layer; An anti-icing protective layer is taken and applied to the elastic protective layer, and the anti-icing protective layer is applied to the second intermediate layer before the second intermediate layer is semi-cured, so that the anti-icing protective layer is bonded with the second intermediate layer; and removing the paper tape.
2. The method of strengthening a blade of a wind turbine generator system according to claim 1, wherein the grinding the surface of the blade body comprises the steps of: rotating the blade body to a vertical arrangement so that the tip of the blade body is arranged towards the ground; And polishing the windward side, the leeward side and joints of the windward side and the leeward side of the blade body along the direction from the tip of the blade body to the blade root of the blade body.
3. The method for strengthening a blade of a wind turbine generator system according to claim 1, wherein the device for polishing the surface of the blade body is a centrifugal sand paper polisher, and the mesh number of the sand paper is P80-P120.
4. The method for strengthening a blade of a wind turbine generator system according to claim 1, wherein the semi-curing time of the elastic protective material is 50min-65min.
5. Method for strengthening a blade of a wind power plant according to claim 1, wherein said applying a first portion of an elastic protective material on said treatment area comprises the steps of: Placing a first part of elastic protective material in the treatment area and scraping the first part of elastic protective material so that the first part of elastic protective material uniformly covers the treatment area and the surface of the first part of elastic protective material is flat; Said applying a second portion of an elastomeric protective material to said first intermediate layer comprises the steps of: And placing the second part of elastic protective material in the first middle layer and scraping off the first middle layer so that the second part of elastic protective material is uniformly covered on the first middle layer and the surface of the second part of elastic protective material is flat.
6. The method for strengthening a blade of a wind turbine generator system according to claim 1, wherein the elastic protective material is a polyurethane paint or an epoxy paint.
7. Method for strengthening a blade of a wind park according to any of the claims 1-6, wherein the anti-icing protection layer is a ceramic film; the anti-icing protective layer comprises the following steps: And cutting the anti-icing protective layer to enable the area of the anti-icing protective layer to be larger than that of the elastic protective layer.
8. The method of strengthening a blade of a wind turbine generator system according to claim 7, wherein after said applying said anti-icing protective layer on said elastic protective layer, before said removing said paper tape, said strengthening method further comprises the steps of: and applying sealant to the part, which is covered on the processing area, of the anti-icing protective layer, the processing area and the paper tape.

Description

Strengthening method of blade of wind generating set Technical Field The disclosure relates to the field of strengthening of fan blades, in particular to a strengthening method of blades of a wind generating set. Background Blades of wind power generators are susceptible to damage during high-speed rotation. In the related art, a method of applying a leading edge protective film is generally adopted. Meanwhile, in areas with lower air temperature and higher humidity, the phenomenon of icing of the blades exists, and the problem of icing prevention paint is generally solved in the related technology. However, both the protective properties cannot be considered, and the leading edge protective film can protect the blade, but the anti-icing effect is poor, the anti-icing paint has poor protection to the leading edge of the blade, and the blade is easy to damage. Moreover, the construction difficulty of blade protection is high for the in-service unit which is damaged, and the protection effect after construction is poor. Disclosure of Invention The disclosure provides a strengthening method for a blade of a wind generating set, so as to solve the technical problems. In order to achieve the above object, the present disclosure provides a strengthening method of a blade of a wind power generator set, the blade including a blade body, the strengthening method including the steps of: Polishing the surface of the blade body; The paper taking adhesive tape is adhered to the blade body and forms an annular structure so as to outline the polished area of the blade body into a treatment area; coating an elastic protective material on the treatment area to form an elastic protective layer; an anti-icing protective layer is taken and is applied to the elastic protective layer; and removing the paper tape. Optionally, the polishing the surface of the blade body includes the steps of: rotating the blade body to a vertical arrangement so that the tip of the blade body is arranged towards the ground; And polishing the windward side, the leeward side and joints of the windward side and the leeward side of the blade body along the direction from the tip of the blade body to the blade root of the blade body. Optionally, the device for polishing the surface of the blade body is a centrifugal sand paper polisher, and the mesh number of the sand paper is P80-P120. Optionally, the applying an elastic protective material to the treatment area to form an elastic protective layer includes the steps of: coating a first part of elastic protective material on the treatment area, and forming a first intermediate layer after semi-curing; coating a second part of elastic protective material on the first intermediate layer, and forming a second intermediate layer after semi-curing; the first intermediate layer and the second intermediate layer together form the elastic protective layer. Optionally, the applying the anti-icing protection layer on the elastic protection layer is configured to apply the anti-icing protection layer on the second intermediate layer before the second intermediate layer is semi-cured, so that the anti-icing protection layer is bonded with the second intermediate layer. Optionally, the semi-curing time of the elastic protection material is 50min-65min. Optionally, said applying a first portion of the elastomeric protective material over the treatment area comprises the steps of: Placing a first part of elastic protective material in the treatment area and scraping the first part of elastic protective material so that the first part of elastic protective material uniformly covers the treatment area and the surface of the first part of elastic protective material is flat; Said applying a second portion of an elastomeric protective material to said first intermediate layer comprises the steps of: And placing the second part of elastic protective material in the first middle layer and scraping off the first middle layer so that the second part of elastic protective material uniformly covers the first middle layer and the surface of the second part of elastic protective material is flat. Optionally, the elastic protective material is polyurethane paint or epoxy resin paint. Optionally, the anti-icing protective layer is a ceramic film; the anti-icing protective layer comprises the following steps: And cutting the anti-icing protective layer to enable the area of the anti-icing protective layer to be larger than that of the elastic protective layer. Optionally, after the applying the anti-icing protective layer on the elastic protective layer, before the removing the paper tape, the strengthening method further comprises the steps of: and applying sealant to the part, which is covered on the processing area, of the anti-icing protective layer, the processing area and the paper tape. Through above-mentioned technical scheme, through after the elastic protection material of blade body surface coating, apply the anti-icing p