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A sulfur hexafluoride load switch

A load switch, sulfur hexafluoride technology, applied in electrical switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve the problems of low safety, easy to be affected by moisture and water, and easy to discharge at the lower terminals. To achieve the effect of high safety and not easy to discharge

Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The lower terminal of the sulfur hexafluoride load switch has a concave structure, and the surface is prone to moisture and water, which leads to the discharge phenomenon on the surface of the lower terminal, resulting in low safety.

Method used

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  • A sulfur hexafluoride load switch
  • A sulfur hexafluoride load switch
  • A sulfur hexafluoride load switch

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] As mentioned in the background technology section, the lower terminal of the sulfur hexafluoride load switch has a concave structure, and the surface is prone to moisture and water, which leads to the discharge phenomenon on the surface of the lower terminal, resulting in low safety.

[0027] Because the lower terminal has a concave structure, the air fluidity is poor. When it is damp, the insulator surface of the lower terminal is prone to water accumul...

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Abstract

The invention discloses a sulfur-hexafluoride load switch. The switch comprises an upper insulating cover, a lower insulating cover opposite to the upper insulating cover, upper terminals and lower terminals, wherein the upper terminals are arranged at the side, deviated from the upper insulating cover, of the lower insulating cover, the lower terminals are arranged at the side, deviated from the lower insulating cover, of the upper insulating cover and opposite to the upper terminals, and surfaces of the lower terminals are equipped with hydrophobic coatings. The hydrophobic coatings at the surfaces of the lower terminals of the sulfur-hexafluoride load switch are super-hydrophobic RTV (Room Temperature Vulcanization) silicone rubber coatings which include hydrophobic surfaces and are not easy to form water films; when the surfaces of the coatings are moisturized, steam forms water drops which fall off, only an extremely small amount of water drops is attached to the surfaces of the coatings and tends to be brought away by other falling-off water drops; and thus, water is not easy to accumulate at the surfaces, leakage current is difficult to generate, a discharging phenomenon is not easy to occur, and the safety level is high.

Description

technical field [0001] The invention relates to the technical field of switchgear, in particular to a sulfur hexafluoride load switch. Background technique [0002] The load switch is a kind of switch device of simple arc extinguishing device, and the load switch using sulfur hexafluoride gas as insulation and arc extinguishing medium is called sulfur hexafluoride load switch. It can be used for switching and switching load current and overload current, and can also be used for switching and breaking no-load lines, no-load transformers and capacitor banks. [0003] The sulfur hexafluoride load switch is composed of an upper insulating cover and a lower insulating cover arranged oppositely, sulfur hexafluoride gas is arranged inside it, an upper terminal is arranged on the upper insulating cover, and an upper terminal is arranged on the lower insulating cover corresponding to the upper terminal. the lower terminal. [0004] The lower terminal of the sulfur hexafluoride load...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/53
Inventor 严文杰钱建苗周伯军阮斌王川吴剑侠茹晶晶吴志杭
Owner STATE GRID CORP OF CHINA
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