Three-electrode multi-channel gas spark switch

Abstract

The invention discloses a three-electrode multi-channel gas spark switch. An upper shell body (5) and a lower shell body (6) are buckled to form a shell body. Two main electrode connecting rods (2) pass through holes formed in the upper shell body (5) and the lower shell body (6) respectively, one end of each main electrode connecting rod (2) is arranged inside the shell body and is connected with a main electrode (1), and the other end of each main electrode connecting rod (2) is matched with a main electrode hold-down nut to be fixed on the shell body. A trigger electrode (4) is arranged inside the shell body, the trigger electrode (4) is of a circular ring structure, the axial cross section of the trigger electrode (4) is of the shape of the combination of two like-trapezoids, and circular chamfer processing is conducted on the transition surface of the trigger electrode (4). The three-electrode multi-channel gas spark switch is small in size and is of a cylindrical structure, the cross sections of the main electrodes and the cross section of the trigger electrode are all of trapezoid structures, the inductance of the switch self in quite small in the discharging process, the surfaces of the main electrodes are of a circular ring structure, and multi-channel discharging can be formed more easily. Therefore, spark inductance is further reduced, and the service life of the electrodes is prolonged.

Description

technical field [0001] The invention relates to the technical field of gas spark switches, in particular to a three-electrode 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 in...

AI Technical Summary

Problems solved by technology

Existing multi-channel gas spark switches basically adopt a multi-gap structure, which is large in size, so its own inductance is also large, and the structure is complex and the cost is relatively high. However, small-volume three-electrode gas switches are rarely able to form multi-channel discharge

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