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Gas insulated switch device

A gas-insulated switch and gas technology, applied in the direction of electric switches, high-voltage/high-current switches, electrical components, etc., can solve the problems of increased wear, increased contact resistance, and reduced insulation performance of the machine to achieve the optimization of anti-wear solutions Effect

Inactive Publication Date: 2010-09-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case of a soft film, the amount of wear caused by sliding becomes larger. First, it is not only necessary to thicken the silver plating film, but also to worry about the deterioration of the insulation performance of the machine due to the metal foreign matter that is powdered due to wear.
[0017] Conversely, in the case of a hard film, although the amount of wear can be reduced, the contact resistance becomes larger
Although in the existing example, by using a lubricating material composed of some perfluoropolyether binder and graphite in the soft film, a certain degree of wear reduction effect can be expected, but compared with the hard film ratio, the amount of wear is still large, and the effect is not satisfactory

Method used

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  • Gas insulated switch device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] according to figure 1 2 illustrates Embodiment 1 of the present invention. figure 1 It is a side view showing an example of a buffer type gas insulated circuit breaker having an arc extinguishing chamber employing a two-directional sputtering method according to Embodiment 1 of the present invention. 2 is a cross-sectional view showing an example of the structure of the sliding portion of the gas insulated circuit breaker according to Embodiment 1 of the present invention. In addition, in figure 1 As in FIG. 2, the same reference numerals denote the same components.

[0041] An example of a buffer-type gas insulated circuit breaker having an arc extinguishing chamber using the two-direction sputtering method of the present invention figure 1 The structure in is composed of SF sealed as the insulating medium 6 The grounding cabinet 12 of the gas 11 and the operating housing 14 containing the operating device 13 are constituted, and the operating force is transmitted thro...

Embodiment 2

[0070] To Figure 3 to Figure 6 Example 2 according to the present invention will be described. image 3 It is a cross-sectional view showing an example of the structure of the sliding portion of a gas insulated circuit breaker according to Embodiment 2 of the present invention. Fig. 4 is a microscopic schematic diagram showing an example of the contact state of the sliding contact portion. Figure 5 It is a graph showing an example of the evaluation results of the wear characteristics of the silver plating film of Example 2 of the present invention. Image 6 It is a graph showing an example of the evaluation result of the contact resistance of the silver plating film of Example 2 of the present invention. The aforementioned FIG. 2 is a side view showing the structure of an example of a buffer type gas insulated circuit breaker having an arc extinguishing chamber of the two-direction sputtering method according to Embodiment 2 of the present invention.

[0071] in image 3 In this,...

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Abstract

A gas insulated breaking device which accommodates open / close elements including a puffer cylinder which compresses an insulation gas and extinguishes an arc and an electricity supply means which has a slide contact portion which is brought into slide contact with a slide contact portion of the puffer cylinder in the inside of a vessel in which the insulation gas is sealed, a relatively soft plating film is formed on the slide contact portion of the puffer cylinder, and a relatively hard plating film is formed on the slide contact portion of the electricity supply means, and the silver plating film of each slide contact portion has an inner layer thereof formed of a soft film and an outer layer thereof which constitutes a surface portion formed of a hard film.

Description

Technical field [0001] The present invention relates to a gas-insulated switchgear, in particular to a gas-insulated circuit breaker used in the field of power system transformation, and to a silver plating formed on a sliding contact part. Background technique [0002] Fig. 2 is a side view showing the structure of a buffer type gas insulated circuit breaker having a two-direction sputtering arc extinguishing chamber suitable for the present invention, and its basic structure is widely known as the prior art. [0003] In Figure 2, it is composed of SF sealed as an insulating medium 6 The grounding cabinet 12 of the gas 11 and the operating housing 14 containing the operating device 13 are constituted, and the operating force is transmitted through the shaft seal 15. The driving force of the operating device 13 is transmitted through the insulated operating rod 17 contained in the insulated support tube 16 in the grounding cabinet 12, and is mechanically transferred from the fixed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/90H01H33/64H01H73/02
Inventor 永尾荣一川田牧子皆川忠郎土江瑛大塚恭一
Owner MITSUBISHI ELECTRIC CORP