Effect of Explosion Shock on the Energy Release Characteristics of Ignition Capacitance of Electronic Detonator

doi:10.12382/bgxb.2024.0221

Abstract

Abstract:

In order to quantitatively analyze the effect of explosion impact on the ignition energy of electronic detonator,seven sets of impact experiments with different strengths are made for liquid aluminum electrolytic capacitors by underwater explosion method.The dielectric breakdown behavior and leakage current change rule of capacitor under impact load are studied,and the energy loss path of electronic detonator capacitor is analyzed.An impact-ignition model of electronic detonator is established.The functional relationship between shock wave overpressure and ignition energy is obtained.The results show that the dielectric breakdown of capacitor sample occurs under the shock wave overpressure of 8.5-40.6MPa,and the voltage drop increases exponentially with the increase in shock wave overpressure.When the shock wave overpressure is greater than a critical value,the capacitor cannot heal completely after dielectric breakdown,and the leakage current increases to the mA level with an average value of 1.62mA.The ignition energy of electronic detonator decreases gradually with the increase in shock wave intensity,and when the leakage current increases,the ignition energy drops sharply.

Key words: electronic detonator, aluminum electrolytic capacitor, underwater explosion, dielectric breakdown, leakage current

CLC Number:

TM53
O347.3

LI Hongwei, WANG Jiale, LIANG Hao, ZHOU En, SUN Yi, ZHANG Wanlong, GUO Ziru. Effect of Explosion Shock on the Energy Release Characteristics of Ignition Capacitance of Electronic Detonator[J]. Acta Armamentarii, 2025, 46(3): 240221-.

Figures/Tables 14

References 21

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实验编号	冲击距离/ cm	超压(计算值)/MPa	实验次数
1	12.5	40.6	3
2	15	33.1
3	20	23.9
4	25	18.6
5	30	15.1
6	40	10.9
7	50	8.5

实验编号	冲击距离/ cm	超压(计算值)/MPa	实验次数
1	12.5	40.6	3
2	15	33.1
3	20	23.9
4	25	18.6
5	30	15.1
6	40	10.9
7	50	8.5

冲击距离/ cm	充电电流峰值/A			均值/A
冲击距离/ cm	第1次实验	第2次实验	第3次实验	均值/A
12.5	0.331	0.279	0.341	0.317
15	0.245	0.233	0.180	0.219
20	0.128	0.0970	0.129	0.118
25	0.0604	0.0657	0.0303	0.0521
30	0.0236	0.0292	0.0334	0.0287
40	0.00721	0.00187	0.0128	0.00729
50	0.000900	0.00357	0.00552	0.00333

冲击距离/ cm	充电电流峰值/A			均值/A
冲击距离/ cm	第1次实验	第2次实验	第3次实验	均值/A
12.5	0.331	0.279	0.341	0.317
15	0.245	0.233	0.180	0.219
20	0.128	0.0970	0.129	0.118
25	0.0604	0.0657	0.0303	0.0521
30	0.0236	0.0292	0.0334	0.0287
40	0.00721	0.00187	0.0128	0.00729
50	0.000900	0.00357	0.00552	0.00333

实验编号	冲击波超压/MPa	充电电流峰值/A	漏电流积分均值/A
1-1	40.6	0.331	0.00132
1-2		0.279	0.00129
1-3		0.341	0.00186
2-1	33.1	0.245	0.00215
2-2		0.233	0.00169
2-3		0.180	0.00163
3-1	23.9	0.128	0.00193
3-2		0.0970	0.00102
3-3		0.129	0.00172
4-1	18.6	0.0604	0.000102
4-2		0.0657	0.00179
4-3		0.0303	0.0000872
5-1	15.1	0.0236	0.0000472
5-2		0.0292	0.0000441
5-3		0.0334	0.000349
6-1	10.9	0.00721	0.0000577
6-2		0.00187	0.0000559
6-3		0.0128	0.0000624
7-1	8.5	0.000900	0.0000439
7-2		0.00357	0.0000468
7-3		0.00552	0.0000434