Multi-channel gas spark switch

Abstract

The invention discloses a multi-channel gas spark switch. Two main electrodes (5) are arranged inside a shell body, a trigger electrode (6) is arranged between the two main electrodes (5), screw holes are evenly distributed in the side face of the trigger electrode (6), a blind hole with a smaller hole diameter is formed in the front end of the trigger electrode (6), a needle electrode is arranged in the blind hole, and spraying holes which are communicated with the bottom of the blind hole are formed in an end face of the trigger electrode (6). The inner portion of the blind hole is used as a plasma spraying cavity, the needle electrode and the trigger electrode (6) in the plasma spraying cavity discharge to generate plasma in the plasma spraying cavity, and the plasma can enter one spark gap through the spraying holes. According to the multi-channel gas spark switch, the plasma spraying technology is used as a gas switch trigger method, discharge delayed time is reduced, multi-channel discharge is caused to occur on the peripheries of the plurality of spraying holes, spark inductance caused by discharge is reduced, the service life of the switch is prolonged, the switch can work under a low working voltage condition, and the high trigger characteristics are ensured.

Description

technical field [0001] The invention relates to the technical field of gas spark switches, in particular to a multi-channel gas spark switch. Background technique [0002] The gas spark switch is the core equipment in the pulse power device. The gas spark switch can not only transmit high power, but also has low inductance and low loss. Its conduction is that when the applied voltage exceeds a certain critical voltage, strong ionization occurs in the gas, and the current increases sharply. At the same time, the ionization process in the gas It can be maintained by itself only by the effect of the electric field, and no longer needs external ionization factors. If the electric field is relatively uniform, the gap will be broken down, and then glow discharge, spark discharge or arc discharge will be formed according to the air pressure, external circuit impedance and other conditions. Dry and clean air, nitrogen, sulfur hexafluoride, etc. are often used as insulating gases. ...

AI Technical Summary

Problems solved by technology

However, the disadvantages of these two methods are that the number of discharge channels varies greatly, the position of the discharge point is random, and it is difficult to trigger the work under the condition of low work coefficient.

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