Anti-contamination insulator

An insulator and pollution-resistant technology, which is applied in the direction of inorganic insulators, insulators, and heterogeneous insulating materials, can solve the problems of shortened life of insulators, and achieve the effects of preventing the reduction of withstand voltage characteristics, long-term stable anti-static, and stable characteristics

Inactive Publication Date: 2010-05-26
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the conductive glaze continuously flows a weak current, the life of the insulator tends to be shorter than that of ordinary porcelain insulators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] use as figure 1 Four kinds of samples were made for the three peripheral corrugated hanging insulators made of porcelain shown. The first sample is a sample without surface treatment (standard product), and the second sample is a surface low-energy agent (hydrophobic agent) coated with X-24-7890 sold by Shin-Etsu Chemical Co., Ltd. Samples applied to the entire surface of the insulator. The third sample is a sample in which a surface low-energy agent (hydrophobic agent) sold by NTT-AT Corporation under the trade name HIREC is applied to the entire surface of the insulator. The fourth sample is A sample in which the coating layer mainly composed of the antistatic agent of the present invention was formed on the entire surface of the insulator. As the coating layer mainly composed of antistatic agent, ZnO, Sb 2 o 4 Particles are dispersed in a binder silicone resin, and the binder is diluted with solvents 1-butanol and isopropanol, and formed on the surface of the insu...

Embodiment 2

[0033] Next, use the image 3 For the lower corrugated hanging insulator shown above, the first sample (standard product) without surface treatment was produced, and the first sample in which the coating layer mainly composed of the antistatic agent of the present invention was formed on the entire surface of the insulator 4 samples, the fifth sample in which the antistatic agent-based coating layer of the present invention was formed only on the lower surface of the insulator main body, was measured in the same manner as in Example 1 for the amount of contamination adsorption. As a result, when the amount of stain adsorption of the first sample was 100, that of the fourth sample was 27, and that of the fifth sample was 25. From this, it was confirmed that the present invention is effective even when the shapes of the insulators are different, and that it is effective to form only the coating layer mainly composed of the antistatic agent on the lower surface depending on the s...

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Abstract

An anti-contamination insulator in which a coating layer containing an antistatic agent is formed on surfaces of a porcelain insulator main body, onto which ordinary glaze is coated, and which can prevent contaminants contained in the air from adhering by charging is provided. The antistatic agent is an agent having conductive metal oxide, such as ZnO, Sb 2 O 4 , or SnO 2 , or metal dispersed in binder. A thickness of the coating layer is adjusted so that a surface resistance of the insulator is 1,000 M CR to 100,000 M CR . According to the present invention, it is possible to prevent reduction in withstand voltage characteristics even in areas suffering from severe air pollution. The anti-contamination insulator is particularly suited as an insulator for direct-current transmission and does not cause shortening of an insulator service life.

Description

technical field [0001] The present invention relates to a fouling-resistant insulator suitable for use in a fouling environment where the atmosphere contains soot or dust discharged from factories, automobiles, and the like. Background technique [0002] Porcelain insulators, which are superior in electrical insulation, mechanical strength, and durability, have been widely used since ancient times as insulators for supporting the insulation of power transmission lines, distribution lines, and power generation and transformation equipment. Porcelain insulators have a high surface resistance of 100,000 to 200,000 MΩ in a clean state, but it is known that when the surface of the insulator is stained, the surface resistance decreases, and the withstand voltage characteristics are greatly reduced. Especially in Japan, which is surrounded by the sea, there is a problem of rapid contamination caused by the adsorption of salt from the sea from the sea during strong winds, and counte...

Claims

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Application Information

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IPC IPC(8): H01B17/50
CPCC04B41/4961C04B41/87H01B3/12H01B3/004C04B41/84C04B41/009C04B41/52H01B17/50
Inventor 伊藤进铃木良博杉浦由晃佐藤立
Owner NGK INSULATORS LTD
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