气隙长度对气体放电式丝电爆过程的影响  

Effect of Air Gap Length on Process of Gas-discharge Wire Electrical Explosion

作　　者：杨富龙[1] 张爱华[1] 朱亮[2] 毕学松[2] 

机构地区：[1]兰州理工大学电信学院,兰州730050 [2]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050

出　　处：《高电压技术》2014年第6期1903-1908,共6页High Voltage Engineering

基　　金：国家自然科学基金(51061011);甘肃省自然科学基金(1014RJZA014)~~

摘　　要：气体放电式丝电爆过程中,不同气隙长度会影响金属丝上的能量沉积及爆炸产物。为研究产生该影响的机理,试验测量了丝电爆过程中的电压和电流,并建立了相应的模型进行验证,最后采集不同气隙下的爆炸产物并对其平均粒径进行了统计分析。结果表明:在确保气体放电式丝电爆能够发生的条件下,气隙δ增大,金属丝上电压与电流几乎不发生变化,只是波形峰值略微滞后一些;而随着δ增大,金属丝上能量沉积会以1.67 J/mm速率下降;相同初始充电电压下,不同气隙爆炸产物中纳米颗粒的尺寸均近似于正态分布,且其平均粒径变化不大。In the process of electrical explosion of wire ignited by gas discharge, the gap length δ between the wire and electrode affects the energy density and the products of the wire. To understand the mechanism of this influence, we measured the voltage and current in the explosion experiments with various air gaps, and established a theoretical model to examine the results. We also collected the explosive products and statistically analyzed their mean particle diameters. The results show that, the voltage and current on the wire hardly changes with the increasing δ, though their peaks were slightly delayed. With the increase of δ, the energy density decreases by 1.67 J/mm. For the explosion with the same initial charging voltage but different δ, the diameters of the nanoparticle products follow the normal distribution approximately, while their mean value barely changes.

关 键 词：丝电爆 气隙 能量密度 气体放电 等离子体 电路模拟 

分 类 号：O461[理学—电子物理学]