Gas switch

Abstract

The invention discloses a gas switch which comprises an upper electrode, a lower electrode, an insulating sleeve and a metal sleeve, wherein the upper electrode and the lower electrode are prepared from a high-intensity graphite material and are symmetrically arranged axially; the lower part of the upper electrode, the upper part of the lower electrode and the upper part of the metal sleeve are all subjected to rounding-off treatment; the insulating sleeve is tightly sleeved at the external part of the lower electrode; the height of the insulating sleeve is lower than that of the lower electrode; the metal sleeve is tightly sleeved on the external part of the insulating sleeve, and the height of the metal sleeve is basically identical to that of the lower electrode. The metal sleeve tightly leans on the external part of the insulating sleeve, thus the problem of the declining of conducting performance of the gas switch caused by severe ablation of the lower electrode is avoided, and at the same time, the service life of the gas switch is prolonged; and additionally, a groove formed between the lower electrode and the metal sleeve can enable plasmas to move towards the direction of the upper electrode, thus the breakdown and conducting performances of the gas switch are ensured effectively.

Description

technical field [0001] The invention relates to a gas switch. Background technique [0002] As a commonly used pulse power switch, the gas switch has the advantages of fast response, small loss, high withstand voltage, large conduction current, high stability, low inductance and jitter, easy adjustment of working voltage, simple and firm structure, and low cost. It has been widely used in the field of high-voltage electrical technology and pulse power technology. [0003] However, the existing gas switch has the following problems: under the condition of large current conduction, the trigger electrode will be ablated unevenly, which will affect the conduction performance and service life of the gas switch, and increase the maintenance cost. Contents of the invention [0004] The purpose of the present invention is to provide a gas switch, which can solve the above technical problems. [0005] A gas switch, including an upper electrode, a lower electrode, an insulating sl...

AI Technical Summary

Problems solved by technology

[0003] However, the existing gas switch has the following problems: under the condition of high current conduction, the trigger electrode will be ablated unevenly, which will affect the conduction performance and service life of the gas switch, and increase the maintenance cost

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