Development of miniature pseudo-spark switch
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摘要: 伪火花开关是脉冲功率领域关键器件之一，具有脉冲电流大、电压范围宽、寿命长及可靠性高等优点。针对整机系统小型化发展的需要，开展新型小体积伪火花开关研制，创新性地将触发针引入空心阴极内部，实现辉光放电电子源注入，该设计减小伪火花开关的体积，并通过制管及实验验证设计合理性。测试结果表明，该产品的阳极工作电压范围为0.5～10 kV，最大阳极脉冲电流40 kA；在36 kA脉冲电流情况下，工作2万余次并未发现性能下降；该样品已通过高温、低温、温循、振动等可靠性试验考核。Abstract: Pseudo-spark switch, with the advantages of large pulse current, wide operating voltage, long life expectancy and high reliability, is one of the key devices in the field of pulse power technology. To meet the miniaturized development requirement in the complete machine, the miniature pseudo-spark switch has been developed. The electron source is injected by introducing the trigger needle into the hollow cathode innovatively in order to achieve glow discharge. Through this physical design the volume of the pseudo-spark switch has been decreased as well as the design rationality has been verified by producing and testing the pseudo-spark switch. The test results indicate that the anode working voltage is ranged from 500 V to 10 kV and the anode pulse current is 40 kA. Under the condition that the anode pulse current is 36 kA, no sign of performance decline has been found after more than 20000 times of work. The sample has passed the reliability test of high temperature, low temperature, temperature cycle and vibration.
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Key words:
- miniature /
- pseudo-spark switch /
- pulse power technology /
- trigger needle /
- reliability tests
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图 1 伪火花开关典型结构及伪火花放电电压等势线分布图
Figure 1. Typical structure of pseudo-spark switch & voltage equipotential distribution diagram of pseudo-spark discharge
图 2 新型小体积伪火花开关示意图、等势线分布图及常规单间隙伪火花开关结构示意图
Figure 2. Schematic diagram of miniature pseudo-spark switch and equipotential distribution diagram of the cusp and schematic diagram of conventional single-gap pseudo-spark switch
图 3 常规伪火花开关和新型小体积伪火花开关对比
Figure 3. Comparison between conventional pseudo-spark switch and miniature pseudo-spark switch
图 6 新型小体积伪火花开关的放电波形
Figure 6. Discharge waveform plot of miniature pseudo-spark switch
图 7 峰值正向阳极电压与阳极脉冲电流峰值的关系曲线
Figure 7. Diagram of the relationship between forward anode voltage and peak anode pulse current
图 8 阳极着火延迟时间分布图（Ua=8 kV；Ia=36 kA）
Figure 8. The distribution plot of anode current delay time
表 1 新型小体积伪火花开关和常规单间隙伪火花开关参数对比表
Table 1. Comparison between miniature pseudo-spark switch and conventional pseudo-spark switch
peak forward anode voltage (max)/kV peak anode current/kA hydrogen reservoir size miniature pseudo-spark switch 25 40 no ϕ25 mm×30 mm conventional pseudo-spark switch 40 80 yes ϕ114 mm×87.6 mm 
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表 2 新型小体积伪火花开关实验测试数据
Table 2. Experimental data of miniature pseudo-spark switch
peak forward anode voltage/kV peak anode current/kA delay time/ns 2 8.4 245 3 13.3 250 4 17.9 268 5 22.8 247 6 27.6 245 7 31.8 266 8 36.0 275 9 39.9 252
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表 3 新型小体积伪火花开关可靠性试验的内容
Table 3. Reliability test of miniature pseudo-spark switch
items conditions and requirements results high temperature storage non-working state; T=55 ℃; t=48 h;
recovery time: ≥2 h.Ua=9 kV, Ia=40 kA; once/30 s, 10 times,
no breakdown, no coronalow temperature storage non-working state; T=−40 ℃; t=24 h;
recovery time: ≥2 h.Ua=9 kV, Ia=40 kA; once/30 s, 10 times,
no breakdown, no coronatemperature cycle non-working state; T1=−40 ℃, t1=2 h;
T2=55 ℃, t2=2 h; shift time≤5 min;
N=3; recovery time :12 h.Ua=9 kV, Ia=40 kA; once/30 s,
10 times, no breakdown, no coronasweep frequency vibration Ua=14 kV, PSD: 0.15 g2/Hz, t=10 min,
once for axial and radial.no breakdown, no corona
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表 4 新型小体积伪火花开关、小型触发管及小型氢闸流管性能比较表
Table 4. Comparison between miniature pseudo-spark switch, trigger tube and miniature thyratron
peak forward anode voltage/
self-breakdown voltage/kVminimum operate
voltage/kVpeak anode
current/kAminimum trigger
voltage/kVdelay
time/nsminiature pseudo-spark switch 10 0.5 40 0.2 280 RQ-10 trigger tube 11 6 32 4.5 − ZQM-9901 thyratron 10 0.5 0.2 0.18 350 hot cathode life/times size (mm×mm) total height/mm draw ability of
reverse currentminiature pseudo-spark switch no ＞20000 ϕ25 mm ×30 mm 53 yes RQ-10 trigger tube no 1000 ϕ36.2 mm ×32.5 mm 36 yes ZQM-9901 thyratron yes − ϕ25 mm ×53 mm 79 no
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[1] 刘锡三. 高功率脉冲技术[M]. 北京: 国防工业出版社, 2005Liu Xisan. High pulsed power technology[M]. Beijing: National Defense Industry Press, 2005 [2] 周志伟. 高电压大功率开关管技术述评[C]//中国电子学会真空电子学分会第十三届学术年会论文集. 2001: 340-346Zhou Zhiwei. Review of high voltage and high power switch technology[C]//Annual Conference of 13th the Chinese Institute of Electronics Vacuum Electronics. 2001: 340-346 [3] 栾小燕, 张明, 周亮. 一种新型大电流脉冲调制器件—伪火花开关[J]. 真空电子技术, 2012(5):38-41,58 doi: 10.3969/j.issn.1002-8935.2012.05.009Luan Xiaoyan, Zhang Ming, Zhou Liang. A new pulse modulator device for large current—pseudospark switch[J]. Vacuum Electronics, 2012(5): 38-41,58 doi: 10.3969/j.issn.1002-8935.2012.05.009 [4] 邱毓昌. 伪火花开关的发展与应用[J]. 电工电能新技术, 1997(4):11-14,20Qiu Yuchang. Development and applications of pseudospark switches[J]. Advanced Technology of Electrical Engineering and Energy, 1997(4): 11-14,20 [5] Mechtersheimer G, Kohler R, Meyer R, et al. High repetition rate, fast current rise, pseudo-spark switch[J]. Journal of Physics E: Scientific Instruments, 1986, 19(6): 466-470. doi: 10.1088/0022-3735/19/6/015 [6] Bochkov D V, Djailev M V, Ushich V G, et al. Sealed-off pseudospark swiches[C]//1st International Congress on Radiation Physics, High Current Electronics, and Modification of Materials. 2000: 136-140. [7] 张明, 周亮, 栾小燕, 等. 面向脉冲功率技术需求的伪火花开关技术[J]. 真空电子技术, 2021(1):1-9Zhang Ming, Zhou Liang, Luan Xiaoyan, et al. Pseudo-spark switch technologies for pulsed power sources[J]. Vacuum Electronics, 2021(1): 1-9 [8] 廖复疆. 真空电子技术[M]. 2版. 北京: 国防工业出版社, 2008Liao Fujiang. Technology of vacuumelectron[M]. 2nd ed. Beijing: National Defense Industry Press, 2008 [9] Boeuf J P, Pitchford L C. Pseudospark discharges via computer simulation[J]. IEEE Transactions on Plasma Science, 1991, 19(2): 286-296. doi: 10.1109/27.106826 [10] 郭宁, 高军, 聂文虎, 等. 空心阴极在空间技术中的应用[C]//第八届真空技术应用学术年会论文集. 2005Guo Ning, Gao Jun, Nie Wenhu, et al. Application of hollow cathode in space technology[C]//Annual Conference of 8th the Chinese Institute of Electronics Vacuum Electronics. 2005 [11] 栾小燕, 张明, 周亮. 双间隙伪火花开关沿面放电触发材料的测试与研究[J]. 真空电子技术, 2014(2):14-17,27 doi: 10.3969/j.issn.1002-8935.2014.02.005Luan Xiaoyan, Zhang Ming, Zhou Liang. A new pulse modulator device for large current-pseudospark switch[J]. Vacuum Electronics, 2014(2): 14-17,27 doi: 10.3969/j.issn.1002-8935.2014.02.005 [12] 谢建民, 邱毓昌. 伪火花放电开关的陶瓷表面放电触发研究[J]. 强激光与粒子束, 2003, 15(2):199-202Xie Jianmin, Qiu Yuchang. Ceramic surface flashover triggering of pseudospark switchs[J]. High Power Laser and Particle Beams, 2003, 15(2): 199-202 [13] Frank K, Urban J, Bickes C, et al. Mechanism of the pseudospark initiation for the switches with a trigger unit based on flashover[C]//Proceedings ISDEIV. 19th International Symposium on Discharges and Electrical Insulation in Vacuum. 2000: 331-334. [14] 张明, 周亮, 栾小燕, 等. 伪火花开关大电容脉冲放电的测试与研究[J]. 真空电子技术, 2017(4):30-34,57Zhang Ming, Zhou Liang, Luan Xiaoyan, et al. Measurement and research of large capacity pulse discharge of pseudospark switches[J]. Vacuum Electronics, 2017(4): 30-34,57 [15] 徐远灿, 刘庆想, 王庆峰, 等. 冷阴极闸流管的同步特性[J]. 强激光与粒子束, 2010, 22(4):717-720 doi: 10.3788/HPLPB20102204.0717Xu Yuancan, Liu Qingxiang, Wang Qingfeng, et al. Synchronization characteristics of cold cathode thyratron[J]. High Power Laser and Particle Beams, 2010, 22(4): 717-720 doi: 10.3788/HPLPB20102204.0717 -
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