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Gas switch structure based on low working coefficient and low jitter triggering

A working coefficient, gas switch technology, applied in spark gaps, electrical components, spark gaps and other directions with auxiliary triggering devices, can solve the problems of restricting the construction of large pulse power devices, unable to meet the low working coefficient of FLTD, etc., to reduce the trigger shock. The effect of wearing time delay and jitter, reducing the switching factor, and shortening the generation time

Active Publication Date: 2021-03-30
XI AN JIAOTONG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, the current gas switch generally adopts field distortion gas switch, and its working coefficient is generally higher than 0.7, which cannot meet the requirements of FLTD for low working coefficient.
This severely restricts the construction of large pulse power devices based on FLTD technology

Method used

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  • Gas switch structure based on low working coefficient and low jitter triggering

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Embodiment 1

[0044] The FLTD is charged with positive and negative polarity, and when the discharge circuit inductor produces a nanosecondal large current pulse, when multiplexing is used in parallel, it is necessary to accurately synchronize the current pulse generation, and the power peak is superimposed.

[0045] The three-electrode field distortion gas switch is used as its main discharge branch switch, the charging voltage is ± 80kV, the high pressure pulse capacity is 100NF, and the current pulse generated by the single branch discharge is 120 ns, peak current 40kA, peak power 5GW. In order to improve the trigger consistency of the plurality of branch parallel transport, the switch structure proposed by the apparatus of the present invention can be reduced from 0.66 to 0.50, and the trigger jitter is kept within 1.5 ns, and the gas switch is effectively improved. Work reliability,

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Abstract

The invention discloses a gas switch structure based on low working coefficient and low jitter triggering. Main electrodes are arranged on the upper side and the lower side of the interior of an insulating shell respectively, a trigger electrode is arranged between the main electrodes on the upper side and the lower side, a middle energy storage capacitor is arranged in the trigger electrode, andthe middle energy storage capacitor is connected with a micropore capillary tube structure. The intermediate energy storage capacitor is rapidly charged by applying a trigger pulse, and when the amplitude of the trigger pulse is higher than the breakdown voltage of the microporous capillary structure, the intermediate energy storage capacitor discharges through the microporous capillary structureto form micro-plasma jet flow, so that the trigger breakdown of the gas switch with the working coefficient of less than 0.5 and the jitter of less than 1.5 ns is realized. According to the invention,the micro-plasma jet flow is introduced in the trigger breakdown process of the field distortion gas switch, so that the synergistic effect of the pulse voltage and the plasma jet flow is realized, and the working coefficient of the switch can be reduced to below 0.5.

Description

Technical field [0001] The present invention belongs to the technical field of pulse power switch, and more particularly to a gas switching structure having a low jitter triggering of low working coefficients using microporous plasma jet. Background technique [0002] The gas switch has the advantages of performance stable, high working voltage, high flow capacity, and convenience of regulation, and is widely used in the field of pulse power technology. Fast line-type transformer pulse power drive source (FLTD) is a recognized next-generation fast Zholen reducer, for obtaining high peak power, take hundreds of thousands of gas switching synchronous work, this for the switch The demanding low work coefficient and low trigger jitter (<2ns) requirement, so the low-working coefficients are of great significance for the construction of a large pulse power device in the future. [0003] The current gas switch generally uses a field distortion gas switch, and its operating coefficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T1/22H01T2/00
CPCH01T1/22H01T2/00
Inventor 陈立李兴文吴坚李鹏辉杨莉
Owner XI AN JIAOTONG UNIV
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