A self-breakdown gas switch with high temperature resistance and high reliability

Abstract

The invention discloses a high-temperature-resistant self-breakdown gas switch with high reliability. The self-breakdown gas switch is suitable for the occasions with high temperature, high pressure and relatively high reliability requirements. The self-breakdown gas switch mainly comprises a long electrode pole, an electrode, an insulating sleeve, a stainless steel outer cylinder, a connecting gasket and an inflation valve hole, wherein the overall device comprises two parts of a cathode and an anode and is arranged in an axisymmetric manner; the discharge surface of the electrode is an elliptical lead angle; the electrode is welded at one end of the electrode pole through the connecting gasket; and the insulating sleeve tightly sleeves the outside of the long electrode pole and is seamlessly welded with the stainless steel outer cylinder through the connecting gasket. More reliable mechanical strength can be provided when the gas tightness is ensured, so that the condition of structure looseness of the gas switch caused by repeated continuous discharge impact is avoided. The switch can still stably and reliably work in high-temperature and high-pressure environments when the electrical property of the switch is ensured; and the applicability of the gas switch in a special working condition is significantly improved.

Description

technical field [0001] The invention relates to the technical field of high-voltage switches and pulse power, and more particularly, to a self-breakdown gas switch with high temperature resistance and high reliability. Background technique [0002] Pulse power technology refers to storing a large amount of energy in the energy storage element, and then releasing the energy to the load in an instant through high-speed switching to obtain extremely high instantaneous power. With the rapid development of pulse power technology, the increasing energy, power and charging and discharging times have also put forward higher requirements on the stability and life of the switch. The gas switch has the advantages of fast response, low loss, high voltage level, good stability, simple structure and low cost, so it has been widely used in the field of high voltage switch and pulse power technology. have a greater impact. [0003] The traditional gas switch is limited by the processing m...

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Problems solved by technology

[0003] The traditional gas switch is limited by processing materials, structural design and manufacturing process, and usually only works at normal temperature and pressure, and is affected by the uniformity of the electric field distribution between the electrodes, so that the electrodes themselves will have obvious ablation phenomenon, which will seriously Affect the life and stability of the switch. In the case of multiple high-current discharges, metal ablation and adhesion often occur on electrodes, electrode holders, and electrode sleeves, which eventually lead to irreparable performance defects in the switch, and even have to be repaired. Whole replacement

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