中心点火火焰在药床中传播规律的试验研究

薛绍 陶如意 王浩 程申申

薛绍, 陶如意, 王浩, 程申申. 中心点火火焰在药床中传播规律的试验研究[J]. 爆炸与冲击, 2021, 41(11): 112101. doi: 10.11883/bzycj-2021-0030
引用本文: 薛绍, 陶如意, 王浩, 程申申. 中心点火火焰在药床中传播规律的试验研究[J]. 爆炸与冲击, 2021, 41(11): 112101. doi: 10.11883/bzycj-2021-0030
XUE Shao, TAO Ruyi, WANG Hao, CHENG Shenshen. Experimental research on the law of flame spreading in the charge bed of a central ignition tube[J]. Explosion And Shock Waves, 2021, 41(11): 112101. doi: 10.11883/bzycj-2021-0030
Citation: XUE Shao, TAO Ruyi, WANG Hao, CHENG Shenshen. Experimental research on the law of flame spreading in the charge bed of a central ignition tube[J]. Explosion And Shock Waves, 2021, 41(11): 112101. doi: 10.11883/bzycj-2021-0030

中心点火火焰在药床中传播规律的试验研究

doi: 10.11883/bzycj-2021-0030
详细信息
    作者简介:

    薛 绍(1991- ),男,博士研究生,xue18761686700@163.com

    通讯作者:

    陶如意(1978- ),女,博士,副教授,tao801801@163.com

  • 中图分类号: O381

Experimental research on the law of flame spreading in the charge bed of a central ignition tube

  • 摘要: 为了研究中心点火管火焰在药床中的传播规律,设计了可视化模拟试验平台,开展了不同点火药量、不同装药结构的中心点传火试验。采用高速图像采集系统记录了中心点火管火焰在药床中的传播过程,采用瞬态压力记录仪记录膛内压力的时空变化。结果表明,点火药量为20 g时,出火时间为0.6 ms;点火药量为30 g时,出火时间为1.5 ms;杆状装药床的传火时间平均为2.2 ms,粒状装药床的传火时间平均为3.4 ms,而杆粒混装药床的传火时间为3.1 ms。可见,点火药量对药床出火时间影响显著,较大的点火药量导致药床出火时间延长;不同装药床结构传火性能差异较大,单一杆状装药床传火性能优于单一粒状装药和杆粒混装药床,并且粒状装药床易形成气体壅塞,膛内会出现明显的压力波动现象;根据火焰传播时序位置点,利用一阶指数衰减函数拟合建立了火焰传播过程数学模型,拟合优度大于0.98。
  • 图  1  模拟试验系统流程图

    Figure  1.  Flow chart of the simulation experimental system

    图  2  可视化模拟装置

    Figure  2.  The visualization device for experimental investigation of propellant charge ignition

    图  3  中心点火管结构示意图

    Figure  3.  Schematic diagram of the central ignition tube

    图  4  测试现场布置

    Figure  4.  Arrangement of the test site

    图  5  不同装药结构

    Figure  5.  Different charging configurations

    图  6  不同试验方案火焰传播序列照片

    Figure  6.  High-speed photography of flame spreading through propellant charge in different cases

    图  7  方案1、3、5火焰传播位置

    Figure  7.  Flame positions along the propellant chamber during charge ignition of cases 1, 3 and 5

    图  8  各方案P1、P2、P3测点的压力曲线

    Figure  8.  Pressure-time curves measured at measuring points P1, P2 and P3 in each case

    表  1  各方案装填参数

    Table  1.   Charging parameters in each case

    方案电底火点火药量/g仿真发射药装药结构仿真发射药量/kg仿真发射药装填密度/(g·cm3)
    13#20单一杆状发射药2.70.58
    23#30单一杆状发射药2.70.58
    33#20单一粒状发射药3.00.64
    43#30单一粒状发射药3.00.64
    53#20杆状-粒状混装发射药1.8(杆状),0.9(粒状)0.58
    下载: 导出CSV

    表  2  各方案传火时间

    Table  2.   Flame speeding time of each case

    方案tL/mstR/mstt/ms
    10.81.62.4
    20.61.42.0
    31.02.63.6
    41.02.23.2
    50.82.33.1
    下载: 导出CSV

    表  3  方案1、3、5火焰传播位置函数拟合系数

    Table  3.   Exponential decay function coefficients in cases 1, 3 and 5

    方案火焰传播方向A/mmt1/msX0/mm
    1 960.73748 5.48834−746.77192
    −2140.6712610.281582129.96097
    3 337.19979 0.96082 −65.56418
    −670.86944 3.58306 675.19170
    5 449.90302 1.92159−216.47406
    −567.63017 1.26204 458.43930
    下载: 导出CSV

    表  4  各方案的最高压力和破膜压力

    Table  4.   The highest pressure and membrane-broken pressure in each case

    方案最高压力/MPa破膜压力/MPa
    12.510.98
    22.820.96
    32.530.85
    42.911.00
    52.631.10
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-21
  • 修回日期:  2021-03-19
  • 网络出版日期:  2021-09-27
  • 刊出日期:  2021-11-23

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