Performance of high pressure nitrogen dielectric gas spark switch
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摘要: 从理论分析、软件模拟、实验研究等方面研究了氮气介质高气压开关的工作特性。根据强度理论计算所设计并加工的开关的理论压强可达10 MPa。对氮气介质高气压开关进行实验，得到在气压范围2，4，6 MPa、电极间隙0.1，0.5，1.0 mm时，气隙的击穿延时小于14 ns，抖动小于1 ns；在气压2 MPa、电极间隙0.1 mm时50%击穿电压约为34 kV。与常压空气开关相比较，该开关具有很好的稳定性和绝缘特性。Abstract: This paper investigates the breakdown characteristics of high pressure nitrogen dielectric gas spark switch from the aspects of theoretical analysis, experimental study and software simulation. The theoretical pressure of the high pressure spark switch can reach 10 MPa, which is designed and manufactured according to the strength theoretical calculation. During the experiments of the high pressure spark switch, the nitrogen delay is less than 14 ns and the jitter is less than 1 ns under the conditions of 2, 4, or 6 MPa pressure and 0.1, 0.5, or1.0 mm electrode gap. The 50%-breakdown voltage is 34 kV with 2 MPa pressure and 0.1 mm electrode gap. The high pressure spark switch has better stability and insulating property than atmospheric air switch.
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Key words:
- miniaturization /
- high pressure /
- gas spark switch /
- nitrogen dielectric gas
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