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Multi-cavity voltage-dividing high-voltage vacuum switch tube

A vacuum switching tube and high-voltage technology, which is applied in high-voltage/high-current switches, high-voltage air circuit breakers, electric switches, etc., can solve the problems of reduced mechanical life of bellows, improve service life, reduce maximum equivalent stress value, The effect of reducing the pressure difference between inside and outside

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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  • Multi-cavity voltage-dividing high-voltage vacuum switch tube

Examples

Experimental program
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Effect test

Embodiment 1

[0027] see Figure 1-3 As shown, the present invention is a multi-cavity pressure-dividing high-voltage vacuum switch tube, including an insulating case 1, a shielding cover 2, a moving contact rod 3 and a static contacting rod 4; the insulating case 1 is internally fixed with a shielding case 2; the insulating case 1 A head A101 is fixed on one end; a head A101 is fixed on the 4th side of the static contact rod; a head B102 is fixed on the other end of the insulating shell 1; A moving contact; a static contact is fixed on the static contact rod 4; a bellows 5 is fixed between the inner side of the head B102 and the side of the moving contact rod 3 inside the insulating shell 1; Cavity 103; the fixed ring 301 is arranged on the side of the movable contact rod 3; the cavity 103 is a columnar structure; the transverse length of the cavity 103 is equal to the sum of the stroke length of the movable contact rod 3 and the thickness of the fixed ring 301; A sliding sealing ring 6 i...

Embodiment 2

[0033] see Figure 3-4As shown, the present invention is a multi-cavity pressure-dividing high-voltage vacuum switch tube, including an insulating case 1, a shielding cover 2, a moving contact rod 3 and a static contacting rod 4; the insulating case 1 is internally fixed with a shielding case 2; the insulating case 1 A head A101 is fixed on one end; a head A101 is fixed on the 4th side of the static contact rod; a head B102 is fixed on the other end of the insulating shell 1; A moving contact; a static contact is fixed on the static contact rod 4; a bellows 5 is fixed between the inner side of the head B102 and the side of the moving contact rod 3 inside the insulating shell 1; Cavity 103; the fixed ring 301 is arranged on the side of the movable contact rod 3; the cavity 103 is a columnar structure; the transverse length of the cavity 103 is equal to the sum of the stroke length of the movable contact rod 3 and the thickness of the fixed ring 301; A sliding sealing ring 6 is...

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Abstract

The invention discloses a multi-cavity voltage-dividing 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 rod and a static contact rod, a plurality of cavities are formed in the end socket B; a fixed ring is arranged on the peripheral side surface of the movable contact rod; thecavity is of a columnar structure; the transverse length of the cavity is equal to the sum of the stroke length of the movable contact rod and the thickness of the fixed ring; a sliding sealing ringis matched between the inner wall of the cavity and the peripheral side surface of the fixed ring; through holes for communication are formed in opposite surfaces of every two adjacent cavities; slideways penetrating through the cavity are circularly and uniformly arrayed in the end socket B; and a groove for communication is formed in the slideway. The multiple cavities are formed in the end socket B, and under the action of the fixing ring and the sliding sealing ring, the external environment and the internal vacuum environment on the two sides of the corrugated pipe are converted into theinternal vacuum environment and the internal environment close to the vacuum environment; the effect of remarkably reducing the internal and external pressure difference borne by the two sides of thecorrugated pipe 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 with multi-cavity pressure division. 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 ...

Claims

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Application Information

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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