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Title:
METHOD FOR RECOATING RTV ANTI-POLLUTION FLASHOVER COATING ON INSULATOR COATED WITH RTV ANTI-POLLUTION FLASHOVER COATING
Document Type and Number:
WIPO Patent Application WO/2015/081607
Kind Code:
A1
Abstract:
Disclosed is a method for recoating an RTV anti-pollution flashover coating on an insulator coated with the RTV anti-pollution flashover coating. The insulator comprises an insulator body, a steel pin connected to the upper surface of the insulator body, and a steel cap connected to the lower surface of the insulator body. The method comprises: (1) wiping off dirt on the surface of the insulator; (2) determining whether the insulator can be recoated; (3) performing coating by using an RTV anti-pollution flashover coating with the solid content being 55-65 percent: when the insulator body and the position of a seam formed by connecting the steel pin and the upper surface of the insulator body are sprayed, the pressure being 0.6+/-0.1 Mpa, the distance between a nozzle and the surface to be sprayed being 200+/-50 mm, the included angel between an airflow axis and the surface to be sprayed being 70-90 degrees, and the standing time at the same position is 1-2 s; when the position of a seam formed by connecting the steel cap and the lower surface of the insulator body is sprayed, the pressure is 0.6+/-0.1 Mpa, the distance between the nozzle and the position of the seam is 100+/-30 mm, the included angle between the airflow axis and the lower surface of the insulator body is 0-20 degrees, and the standing time at the same position being shorter than or equal to 1 s; spraying is performed at least twice, and the thickness of a new coating being larger than or equal to 0.2 mm.

Inventors:
ZHANG, Xuedong (No.85 Yingbin Road Yuci District, Jinzhong, Shanxi 0, 030600, CN)
Application Number:
CN2014/001042
Publication Date:
June 11, 2015
Filing Date:
November 24, 2014
Export Citation:
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Assignee:
STATE GRID SHANXI PROVINCE ELECTRIC POWER COMPANY JINZHONG SUPPLY COMPANY (No.85 Yingbin Road Yuci District, Jinzhong, Shanxi 0, 030600, CN)
GRADUATE SCHOOL AT SHENZHEN, TSINGHUA UNIVERSITY (Xili University City Tsinghua Campus Nanshan District, Shenzhen, Guangdong 5, 518055, CN)
International Classes:
H01B19/04; B05D1/02; H01B17/50
Foreign References:
CN103736645A2014-04-23
CN103545068A2014-01-29
CN103752488A2014-04-30
DD119493A11976-04-20
CN100998974A2007-07-18
US7134579B22006-11-14
Other References:
LIANG, JING ET AL.: "Study on RTV Aging Failure Treatment", TECHNOLOGY EXCHANGE AND APPLICATION, 25 February 2011 (2011-02-25)
LI, LU ET AL.: "Application Implementation of Anti-flashover Coating for Polluted Electric Devices", DISTRIBUTION & UTILIZATION, vol. 24, no. 4, 15 August 2007 (2007-08-15), pages 31 - 33
Attorney, Agent or Firm:
TAIYUAN KEWEI PATENT OFFICE (GENERAL PARTNER) (No. 366 Yingze Street, Taiyuan, Shanxi 1, 030001, CN)
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