有限空间内桥丝式电点火元件的发火特性

韩体飞 姜鑫 朱延钰 王猛 刘赛 陈凯强 侯博文

韩体飞, 姜鑫, 朱延钰, 王猛, 刘赛, 陈凯强, 侯博文. 有限空间内桥丝式电点火元件的发火特性[J]. 高压物理学报. doi: 10.11858/gywlxb.20240847
引用本文: 韩体飞, 姜鑫, 朱延钰, 王猛, 刘赛, 陈凯强, 侯博文. 有限空间内桥丝式电点火元件的发火特性[J]. 高压物理学报. doi: 10.11858/gywlxb.20240847
HAN Tifei, JIANG Xin, ZHU Yanyu, WANG Meng, LIU Sai, CHEN Kaiqiang, HOU Bowen. Ignition Characteristic of Bridgewire Electric Ignition Element in Limited Space[J]. Chinese Journal of High Pressure Physics. doi: 10.11858/gywlxb.20240847
Citation: HAN Tifei, JIANG Xin, ZHU Yanyu, WANG Meng, LIU Sai, CHEN Kaiqiang, HOU Bowen. Ignition Characteristic of Bridgewire Electric Ignition Element in Limited Space[J]. Chinese Journal of High Pressure Physics. doi: 10.11858/gywlxb.20240847

有限空间内桥丝式电点火元件的发火特性

doi: 10.11858/gywlxb.20240847
基金项目: 国家自然科学基金(51604009);安徽理工大学国家级大学生创新训练项目(202310361049);安徽理工大学2023年研究生创新基金(2023cx2117)
详细信息
    作者简介:

    韩体飞(1983-),男,博士,高级实验师,主要从事民爆器材与爆破技术研究. E-mail:tifeihan9797@126.com

    通讯作者:

    姜 鑫(2000-),女,硕士研究生,主要从事火工品研究. E-mail:3380299886@qq.com

  • 中图分类号: O389; O521.9

Ignition Characteristic of Bridgewire Electric Ignition Element in Limited Space

  • 摘要: 桥丝式电点火头作为常用的点火元件,在有限空间内的发火特性是其传爆精确性和可靠性的体现。通过制备测试样品模拟桥丝式电点火头发火的有限空间,设计桥丝式电点火元件发火参数测试系统,测试了电点火元件发火过程的时间结构、有限空间内气体压力以及发火光强等参数;采用高速相机拍摄电点火元件发火的动态过程,建立了电点火元件有限空间内发火动态过程的物理模型。研究表明:随着点火电压的增大,桥丝的相变时间缩短,等离子体阶段的持续时间增加,随后趋于稳定,电点火头的发火时间在5.6 ms左右波动,发火压力时间及发火光强时间在3.0~5.0 ms范围内有界波动。点火电压达到20 V后,发火特性参数趋于稳定,能够可靠输出均匀的点火能量,用于点燃下一序列装药。在气室有限空间内,电点火元件发火动态过程可分为桥丝升温加热药剂、药剂发火、热流扩散和冲击波反射4个阶段。

     

  • 图  测试样品的结构

    Figure  1.  Structure of the tested sample

    图  电点火头发火参数测试系统示意图

    Figure  2.  Schematic diagram for the experimental setup of the electric fusehead for testing the ignition parameters

    图  点火电压为5、20和60 V时电点火头的发火信号

    Figure  3.  Ignition signals of the electric fusehead at 5, 20 and 60 V ignition voltages

    图  电点火头的发火时间参数随点火电压的变化关系

    Figure  4.  Ignition time parameters of the electric fusehead changing with ignition voltage

    图  电点火头的发火压力峰值和发火光强峰值随点火电压的变化

    Figure  5.  Peak ignition pressure and peak ignition light intensity of the electric fusehead changing with ignition voltage

    图  桥丝和电点火头发火过程的高速摄影图像

    Figure  6.  High-speed photographic images of the firing process evolution of bridgewire and electric fusehead

    图  桥丝式电点火头发火历程物理模型

    Figure  7.  Physical modelling of the firing process evolution of bridgewire electric fusehead

    表  1  电点火头的发火参数

    Table  1.   Ignition parameters of the electric fusehead

    U/Vti/mstp/mstg/mspm/MPaVg/mV
    59.1744.5263.8140.483 4437.42
    107.0692.4562.5650.395 9517.20
    158.1733.3601.7700.343 4518.11
    206.8633.1341.7080.231 4452.72
    257.4104.3503.1800.267 2448.40
    306.4863.8202.2200.255 2465.64
    356.8032.6262.3350.265 5426.15
    405.9303.8202.2780.243 4436.16
    455.5403.5542.9700.236 8415.59
    505.2393.5372.8000.237 2437.26
    555.6824.4463.7210.226 9424.99
    605.5304.8604.4540.256 2439.03
    705.7814.8013.9540.243 0430.81
    805.7004.2073.3340.253 2434.82
    905.6264.7453.9110.250 8430.33
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出版历程
  • 收稿日期:  2024-07-08
  • 修回日期:  2024-08-20
  • 录用日期:  2024-09-24
  • 网络出版日期:  2024-11-07

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