Multichannel gas spark switch applying plasma synthesis jet trigger technology

Abstract

The invention discloses a multichannel gas spark switch applying a plasma synthesis jet trigger technology. The multichannel gas spark switch is characterized in that the spark gap of an air switch is divided by a middle trigger electrode into two equal parts; the trigger electrode is composed of three portions, i.e., an upper electrode disc, a lower electrode disc and an insulation ring; more than one excitation cavities and jet orifices are embedded into the insulation ring for generating at one side of the trigger electrode multichannel plasma injection; and the surface of an electrode portion at the other side is provided with an annular metal protrusion for forming multichannel discharge in the relative spark gap. A switch housing is made of organic glass or other insulation materials, so that when a trigger pulse reaches the trigger electrode, a higher field distortion coefficient is formed at the side of the annular electrode portion, and at the same time the multichannel plasma injection is formed at the other side, thus the spark inductance of the air switch is reduced, the electrode ablation is minimized, and the service life of the switch is prolonged.

Description

technical field [0001] The invention relates to the field of manufacturing high-voltage gas spark switches, in particular to a multi-channel gas spark switch with plasma synthetic jet trigger technology. Background technique [0002] The gas spark switch is the core component of the pulse power device. Its performance directly affects the output characteristics of the pulse power source. With the development of pulse power devices in the direction of high voltage and high current, multi-sub-block series and parallel structures are a main direction of future pulse power systems. Therefore, gas spark switches are required to have low self-discharge probability, low jitter and Features such as the longest possible service life. [0003] At present, there are mainly three triggering methods for the gas switch. One is to apply a fast leading-edge voltage pulse to the trigger electrode, so that a higher overvoltage multiple is generated in the trigger sub-gap. The disadvantage ...

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Problems solved by technology

[0005] Aiming at the problems of the existing gas spark switch, such as the pursuit of low self-discharge probability and low jitter, single discharge channel, serious electrode ablation, etc., the present invention provides a multi-channel gas spark switch with plasma synthetic jet trigger technology

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