CHINESE JOURNAL OF ENERGETIC MATERIALS
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直流激励下桥丝型电火工品电弧发火预测模型
作者:
作者单位:

1.西安交通大学电工材料电气绝缘全国重点实验室, 陕西 西安 710049;2.西安交通大学电气工程学院, 陕西 西安 710049

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基金项目:

国家自然科学基金项目(52207015)


A Prediction Model of Arc Ignition for Bridge Wire Electro Explosive Device Under Direct Current Excitation
Author:
Affiliation:

1.State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an710049,China;2.School of Electrical Engineering, Xi′an Jiaotong University, Xi′an710049, China

Fund Project:

Grant support: National Natural Science Foundation of China (No. 52207015)

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    摘要:

    为了研究桥丝型电火工品在直流激励下的电弧发火特性,预测其电弧发火安全阈值,采用模拟电荷法计算了脚-壳二维切面电场强度,利用电击穿理论计算了脚-壳电击穿系数,提出了桥丝型电火工品电弧发火的量化判据并建立模型。结果表明,环境温度在25°左右,气压为大气压强时,桥丝型电火工品脚-壳之间距离对其电弧发火阈值影响较大,脚-壳距离越短,电弧发火阈值越低。桥丝型电火工品脚-壳间电击穿电压预测模型计算结果与实测值相对误差不超过3.3%,且利用COMSOL仿真计算所得电击穿系数与预测模型计算结果相对误差约1%。

    Abstract:

    To investigate the arc ignition characteristics of bridge wire electro-explosive devices (EEDs) under DC excitation and predict the arc ignition safety threshold, the simulated charge method was exploited to calculate the cross-sectional electric field strength between the foot-wire and shell of bridge wire EEDs, following a scaled experiment for EEDs to solve unknowns in the electrical breakdown model, which is the electrical breakdown coefficient between the foot-wire and shell of EEDs, leading to a quantitative criterion and arc ignition prediction model. Results indicate that when the laboratory temperature is around 25° and the air pressure is atmospheric pressure, the distance between the foot-wire and shell of bridge wire EEDs significantly influences the arc ignition threshold,and the shorter the foot-shell distance is, the lower the arc ignition threshold is. The relative error between the measured breakdown voltage and the calculated results from the predictive model does not exceed 3.3%. Furthermore, the relative error between the foot-shell breakdown coefficient simulated in COMSOL and the calculated results from the predictive model is within 1%, verifying the model''s accuracy. This research provides a reliable tool for predicting arc ignition safety thresholds, potentially enhancing the design and safety of EEDs.

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引用本文

张博渊,梁涛,薛婉婷,等.直流激励下桥丝型电火工品电弧发火预测模型[J].含能材料, 2024, 32(12):1334-1342. DOI:10.11943/CJEM2024163.
ZHANG Bo-yuan, LIANG Tao, XUE Wan-ting, et al. A Prediction Model of Arc Ignition for Bridge Wire Electro Explosive Device Under Direct Current Excitation[J]. Chinese Journal of Energetic Materials, 2024, 32(12):1334-1342. DOI:10.11943/CJEM2024163.

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  • 收稿日期: 2024-06-20
  • 最后修改日期: 2024-11-20
  • 录用日期: 2024-11-05
  • 在线发布日期: 2024-11-19
  • 出版日期: 2024-12-25