Corona voltage-sharing device and multi-gap series gas spark switch adopting same

Abstract

The invention discloses a corona voltage-sharing device, and relates to a multi-gap series gas spark switch adopting the same. The corona voltage-sharing device comprises an intermediate electrode (1), a corona pin support (2) and a corona pin (3), wherein the corona pin support (2) is assembled at the center of the intermediate electrode (1), and the corona pin (3) is installed on the corona pin support (2). The multi-gap series gas spark switch comprises a positive polarity high-voltage electrode (4), a trigger lead-in interface (5), an insulation gas lead-in interface (6), a switch insulator (7), a negative polarity high-voltage electrode (8) and a voltage-sharing device, wherein the voltage-sharing device is the corona voltage-sharing device, and the corona pin (3) is also arranged at the center of the negative polarity high-voltage electrode (8). The corona voltage-sharing device also can be used for equipment, such as the high voltage is needed to be shared, and a voltage-sharing resistor or a voltage-sharing ring is not easy to be led in the equipment. The invention has the advantages of small volume, simple structure, safety, reliability and long service life.

Description

technical field [0001] The invention relates to a corona pressure equalizing device, and also relates to a multi-gap series gas spark switch introduced into the device. Background technique [0002] The gas spark switch is one of the key components of the pulse power device. The gas spark gap switch has formed a variety of structures according to different applications and requirements to adapt to various special applications. In recent years, in order to meet the needs of the fast-discharge linear transformer drive source (FLTD for short), a gas spark switch with multiple intermediate electrodes and multiple gaps in series has been developed. The distance between each gap in this switch is equal, and the electric field distribution is roughly the same. In the DC withstand voltage process of the switch, the voltage of each gap is evenly distributed, and it is expected to obtain a higher self-breakdown voltage under a certain gas pressure, so as to reduce the self-breakdown p...

AI Technical Summary

Problems solved by technology

External resistance voltage equalization will greatly increase the volume and complexity of the switch, which cannot meet the large-scale use and maintenance of FLTD; the resistivity of the switch insulator coated with a high-resistivity conductive coating will be affected by the type of switch insulating gas, humidity and switch operating temperature. The impact of long-term use will lead to damage to the conductive coating and cannot achieve the effect of voltage equalization

In recent years, in-depth research on multi-gap series switches has been carried out in China, but there is no report on the voltage equalization of the middle electrode.

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