水雾对RDX粉尘爆炸的抑制作用

胡立双 刘洋 杨亚军 祝贺 梁凯丽 胡双启

胡立双, 刘洋, 杨亚军, 祝贺, 梁凯丽, 胡双启. 水雾对RDX粉尘爆炸的抑制作用[J]. 爆炸与冲击, 2024, 44(5): 055401. doi: 10.11883/bzycj-2023-0346
引用本文: 胡立双, 刘洋, 杨亚军, 祝贺, 梁凯丽, 胡双启. 水雾对RDX粉尘爆炸的抑制作用[J]. 爆炸与冲击, 2024, 44(5): 055401. doi: 10.11883/bzycj-2023-0346
HU Lishuang, LIU Yang, YANG Yajun, ZHU He, LIANG Kaili, HU Shuangqi. Inhibition effect of water mist on RDX dust explosion[J]. Explosion And Shock Waves, 2024, 44(5): 055401. doi: 10.11883/bzycj-2023-0346
Citation: HU Lishuang, LIU Yang, YANG Yajun, ZHU He, LIANG Kaili, HU Shuangqi. Inhibition effect of water mist on RDX dust explosion[J]. Explosion And Shock Waves, 2024, 44(5): 055401. doi: 10.11883/bzycj-2023-0346

水雾对RDX粉尘爆炸的抑制作用

doi: 10.11883/bzycj-2023-0346
基金项目: 国家自然科学基金(52276138);山西省基础研究计划(202203021212160, 20210302123030)
详细信息
    作者简介:

    胡立双(1985- ),男,博士,副教授,hlsly1314@163.com

    通讯作者:

    胡双启(1962- ),男,博士,教授,hsq@nuc.edu.cn

  • 中图分类号: O389; TJ55; X944

Inhibition effect of water mist on RDX dust explosion

  • 摘要: 为研究水雾对RDX粉尘爆炸的抑制作用,自主设计了可视化方管粉尘爆炸水雾抑制系统,选择了不同喷嘴类型、喷孔直径以及雾化压力等实验条件,以RDX粉尘爆炸火焰传播动态、爆炸压力以及爆炸温度等变化,判断不同条件下水雾对RDX粉尘爆炸特性的影响。结果表明:在同一雾化压力下,不同类型喷嘴喷出水雾对RDX粉尘爆炸抑制效果不同,离心喷嘴喷出水雾抑爆效果最好;随着雾化压力增大,水雾对RDX粉尘爆炸抑制作用增强;在实验选用的0.8、1.2、1.5、2.0、2.4 mm五种孔径离心喷嘴中,1.5 mm孔径离心喷嘴喷出水雾抑爆效果最佳,在雾化压力4 MPa下,RDX粉尘爆炸压力仅为0.1184 MPa,相比于无水雾时RDX粉尘爆炸压力0.4561 MPa,压力峰值降低了74.0%,爆炸温度为234 ℃,相比于无水雾时RDX粉尘爆炸温度774 ℃,温度峰值降低了69.8%。
  • 图  1  RDX粒径分布图

    Figure  1.  Particle size distribution of RDX

    图  2  实验系统示意图

    Figure  2.  Diagram of experimental system

    1. Compressor; 2. Gas tank; 3. Pressure gauge; 4. Solenoid valve; 5. Electric spark generator; 6. Temperature acquisition instrument; 7. Pressure acquisition instrument; 8. Water tank; 9. Nitrogen cylinder; 10. Electrode; 11, 12, 13. Spare interface; 14. Thermocouple; 15. Pressure sensor; 16. Explosion chamber; 17. Water mist generation device; 18. Spray nozzle; 19. Bursting disc; 20, 22. Valve; 21. Vacuum gauge; 23. Vacuum connection; 24. Time controller; 25. High speed camera; 26. Computer; 27. Controller; 28. Flame detector; 29. Trigger; 30. Dust nozzle; 31. Connecting flange.

    图  3  4.5 g RDX粉尘爆炸火焰传播图像(单位:ms)

    Figure  3.  Flame propagation of RDX dust explosion (unit: ms)

    图  4  不同质量RDX粉尘爆炸压力变化

    Figure  4.  Pressure diagrams of RDX dust explosion with different masses

    图  5  不同质量RDX粉尘爆炸温度变化

    Figure  5.  Temperature diagrams of RDX dust explosion with different masses

    图  6  不同类型喷嘴

    Figure  6.  Different types of nozzles

    图  7  爆炸压力、温度随雾化压力的变化

    Figure  7.  Pressure and temperature by RDX explosion varied with pressure of the mist

    图  8  不同类型喷嘴下水雾分散情况

    Figure  8.  Water mist dispersion under different nozzles

    图  9  不同孔径、不同雾化压力下水雾对RDX粉尘爆炸压力、温度抑制对比

    Figure  9.  Pressure and temperature suppression of RDX at different apertures and spray pressures

    图  10  不同雾化压力时RDX粉尘爆炸火焰传播

    Figure  10.  Flame propagation of RDX dust explosion under different spray pressures

    图  11  不同雾化压力下RDX爆炸压力曲线

    Figure  11.  Pressure curves of RDX explosion under different spray pressures

    图  12  不同雾化压力下RDX爆炸温度曲线

    Figure  12.  Temperature curves of RDX explosion under different spray pressures

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出版历程
  • 收稿日期:  2023-09-27
  • 修回日期:  2023-12-01
  • 网络出版日期:  2024-01-22
  • 刊出日期:  2024-05-08

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