High-voltage vacuum switch tube

A vacuum switch tube, high-voltage technology, applied in high-voltage/high-current switches, high-voltage air circuit breakers, electrical switches, etc., can solve problems such as reducing the mechanical life of bellows, reduce the maximum equivalent stress value, improve stability, The effect of reducing the internal and external pressure difference

Inactive Publication Date: 2020-12-08
芜湖锦晔双腾新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, when the bellows opening speed and internal and external pressure difference, the maximum equivalent stress value of the bellows will increase with the increase; and its maximum equivalent stress value reaches a higher value, and the mechanical life of the bellows will decrease sharply

Method used

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  • High-voltage vacuum switch tube
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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 creative efforts fall within the protection scope of the present invention.

[0026] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...

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Abstract

The invention discloses a high-voltage vacuum switch tube, and relates to the technical field of vacuum switch tubes. The device comprises an insulating shell, a shielding cover, a movable contact rodand a static contact rod, a shielding cover is fixed in the insulating shell; an end socket A is fixed at one end of the insulating shell; an end socket A is fixed on the peripheral side surface of the static contact rod; the other end of the insulating shell is fixedly provided with a voltage-dividing seal head; the outer side surface of the partial pressure seal head is provided with a steppedhole not lower than two stages; a stepped table matched with the stepped hole is arranged on the peripheral side surface of the movable contact rod; the inner surface of the stepped hole is in slidingfit with the stepped table; and a sliding sealing ring for gas sealing between the stepped hole and the stepped table is fixed on the inner wall of each stage of the stepped hole. Under the action ofthe pressure dividing end socket and the step table, the pressure dividing end socket is divided into a plurality of pressure dividing cavities capable of reducing pressure step by step, and the effect of remarkably reducing the borne internal and external pressure difference is achieved.

Description

technical field [0001] The invention belongs to the technical field of vacuum switch tubes, in particular to a high-voltage vacuum switch tube. Background technique [0002] For example, "Influence of Opening Speed ​​of Vacuum Switch in High Pressure Environment on Fatigue Life of Bellows" in CNKI, published on December 16, 2019; the conclusion of the original text is expressed as: take the bellows of 40.5kV commercial vacuum interrupter as the research object , using the fluid-solid coupling method, the transient relative displacement, transient equivalent stress distribution, and fatigue life of the bellows were obtained under the conditions of a pressure difference of 0.1-0.4MPa and a compression speed of 1.0-4.0m / s. Experimental verification was carried out, and the specific conclusions are as follows: [0003] 1) When the opening speed of the bellows is kept constant, the maximum equivalent stress value of the bellows increases with the increase of the pressure differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/662H01H33/664
CPCH01H33/66207H01H33/66238H01H33/664H01H2033/66223
Inventor 彭睿
Owner 芜湖锦晔双腾新能源科技有限公司
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