A dry method for removing aging rtv paint from insulators

Abstract

A method for clearing away an aged RTV coating of an insulator in a dry manner comprises the following steps of (1), determining the size and the shape of the insulator and the thickness, the use time and the RTV material composition of the RTV coating; (2), according to parameters determined in the step (1), determining a clearing-away power density threshold value and a damage power density threshold value output by lasers, wherein the clearing-away power density threshold value is the minimum clearing-away power density of the RTV coating to be cleared away, the damage power density threshold value is the maximum power density capable of being borne when the insulator surface covered with the RTV coating to be cleared away is radiated by the lasers, and when the damage power density threshold value exceeds the maximum power density, the insulator surface will be damaged; and thirdly, according to the clearing-away power density threshold value and the damage power density threshold value determined in the step (2), the power setting of a laser device is adjusted, and the output laser scans the surface of the insulator. According to the method, on the premise that the insulator surface is not damaged, the aged RTV coating of the insulator surface can be efficiently, conveniently and rapidly cleared away.

Description

technical field [0001] The invention relates to a dry method for removing aged RTV paint from insulators. Background technique [0002] A good external insulation state of the transmission line is an important guarantee for the safe operation of the power system. After the silicone rubber materials represented by composite insulators (synthetic insulators), climbing skirts and room temperature vulcanized silicone rubber coatings (RTV coatings) were widely used in the field of external insulation of power systems, the pollution flashover resistance of external insulation equipment was significantly improved. [0003] RTV anti-pollution flashover paint is coated on the surface of electric porcelain or glass insulators, making the originally hydrophilic surface become hydrophobic, which can significantly increase the pollution flashover voltage of the insulator. As an organic polymer material, RTV coatings will inevitably age under the influence of strong electric field, ultra...

AI Technical Summary

Problems solved by technology

[0004] At present, in order to remove the RTV coating, it is necessary to use strong acid, alkali chemical reagents, or other special organic coatings, which are often harmful to the human body, difficult to apply on site, and the method of physical scraping is easy to scratch the surface of the insulator

Therefore, there is still no efficient and convenient on-site technical method