Microcavity discharge plasma jet device based on metal sheet stacking

Abstract

The invention discloses a microcavity discharge plasma jet device based on metal sheet stacking, which comprises a ground electrode, a first trigger electrode and a second trigger electrode. A polytetrafluoroethylene cavity is arranged between the ground electrode and the first trigger electrode; a polytetrafluoroethylene sheet and a metal sheet which are arranged in a stacked mode are arranged in the polytetrafluoroethylene cavity, an injection micro-cavity is formed in the middle of the polytetrafluoroethylene cavity, and one side of the injection micro-cavity is communicated with the ground electrode through a first through hole formed in the ground electrode. And the other side of the first trigger electrode is communicated with the first trigger electrode through a second through hole formed in the first trigger electrode and extends to the second trigger electrode.

Description

technical field [0001] The disclosure belongs to the technical field of high-voltage pulse power, and in particular relates to a microcavity discharge plasma injection device based on stacked metal sheets. Background technique [0002] Gas switch is one of the most common switch types in the field of high voltage pulse power technology, and has a wide range of applications. However, when the working coefficient is very low, the conventional trigger methods such as electric field distortion and ultraviolet pre-ionization cannot guarantee the stable and reliable triggering of the switch, and the use of plasma spraying, that is, injecting plasma between the gaps to achieve gap conduction, can satisfy Reliable trigger conduction of gas switches at extremely low operating coefficients. [0003] The traditional plasma jet adopts microcavity discharge or capillary discharge, and generates gas ionized plasma by ablation of polymer materials to realize gap conduction, but the mass d...

AI Technical Summary

Problems solved by technology

However, when the working coefficient is very low, the conventional trigger methods such as electric field distortion and ultraviolet pre-ionization cannot guarantee the stable and reliable triggering of the switch, and the use of plasma spraying, that is, injecting plasma between the gaps to achieve gap conduction, can satisfy Reliable trigger conduction of gas switches at extremely low operating coefficients

[0003] The traditional plasma jet adopts microcavity discharge or capillary discharge, and generates gas ionized plasma by ablation of polymer materials to realize gap conduction, but the mass density of the resulting plasma is low. Under some extreme special requirements, such as The triggering of the megavolt level SF6 gap at a low working coefficient has poor ejection ability and cannot be triggered stably.

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