Volume 27 Issue 4
Mar 2015
Turn off MathJax
Article Contents
JIANG Yao-Gang, MA Hong-Hao, SHEN Zhao-Wu, FAN Zhi-Qiang, WANG Quan. Study of Pressure on the Inner Wall of Powder Cold Shock-Wave Extinguishing Bomb[J]. Chinese Journal of High Pressure Physics, 2013, 27(4): 592-598. doi: 10.11858/gywlxb.2013.04.020
Citation: JIANG Yao-Gang, MA Hong-Hao, SHEN Zhao-Wu, FAN Zhi-Qiang, WANG Quan. Study of Pressure on the Inner Wall of Powder Cold Shock-Wave Extinguishing Bomb[J]. Chinese Journal of High Pressure Physics, 2013, 27(4): 592-598. doi: 10.11858/gywlxb.2013.04.020

Study of Pressure on the Inner Wall of Powder Cold Shock-Wave Extinguishing Bomb

doi: 10.11858/gywlxb.2013.04.020
  • Received Date: 30 Oct 2011
  • Rev Recd Date: 12 Mar 2012
  • Publish Date: 15 Aug 2013
  • In order to study the shell fragmentation and the early motion of extinguishing medium after explosion in the cold shock-wave extinguishing system, the pressure on the inner wall of the cold shock-wave extinguishing bomb must be firstly understood. The change of pressure has been studied by dimensional analysis, mechanical structure, and explosion experiments. It is found that the pressure is related to the charge weight and bomb diameter, and the pressure waveform measured at the inner wall is rectangular. When the bomb diameter is 104 mm, the duration of high pressure is above 100 s; when the bomb diameter is 220 mm, the duration of high pressure is above 200 s. In addition, the specific central explosive charge of powder is more than that of water under the same dimension of the cold shock-wave extinguishing bomb to reach better effect of the shell crushing. Owing to the higher energy dissipation during compression, the finer powder and pre-compression powder are suggested as extinguishing medium in powder cold shock-wave extinguishing system.

     

  • loading
  • Blasting Safety Regulation [M]. Translated by Institute of Safety Technology, Ministry of Metallurgical Industry. Wuhan, 1983.
    Grishin A M, Kovalev Y M. Experimental and theoretical investigation of the effect of an explosion on the front of crown forest fires [J]. Combust Explo Shock Waves, 1989, 25(6): 724-730.
    Zhang Y, Ren B, Chang X Y, et al. Numerical simulation about the process that a shock wave induces the combustible gas deflagrating [J]. Journal of National University of Defense Technology, 2001, 23(2): 33-37. (in Chinese)
    张艳, 任兵, 常熹钰, 等. 激波诱导可燃气体爆燃的数值模拟 [J]. 国防科技大学学报, 2001, 23(2): 33-37.
    Jiang Y G, Shen Z W. Influence of center high explosive charge ratio to the effect of extinguishing by cold shock wave fire extinguishing bomb [C]//New Technology of Blasting Engineering in China Ⅱ. Beijing: Metallurgical Industry Press, 2008: 875-880. (in Chinese)
    蒋耀港, 沈兆武. 比药量对冷激波灭火弹灭火效果的影响 [C]//中国爆破新技术Ⅱ. 北京: 冶金工业出版社, 2008: 875-880.
    Jiang Y G, Shen Z W, Ma H H. Mechanism and application of cold shock wave fire extinguishing bomb [J]. Fire Safety Science, 2007, 16(4): 226-231. (in Chinese)
    蒋耀港, 沈兆武, 马宏昊. 冷激波灭火弹的灭火机理及应用研究 [J]. 火灾科学, 2007, 16(4): 226-231.
    Jiang Y G, Shen Z W, Ma H H, et al. Study of the mechanism on cold shock-wave fire-extinguishing system [J]. Journal of Safety and Environment, 2009, 9(5): 154-157. (in Chinese)
    蒋耀港, 沈兆武, 马宏昊, 等. 冷激波灭火系统扑灭明火现象的机理研究 [J]. 安全与环境学报, 2009, 9(5): 154-157.
    Henrych J. Dynamics of Explosion and Its Use [M]. New York, USA: Elsevier Scientific Pub Co, 1979.
    Vogler T J, Lee M Y, Grady D E. Static and dynamic compaction of ceramic powders [J]. Int J Solids Struct, 2007, 44(2): 636-658.
    Abbasi T, Abbasi S A. Dust explosions-cases, causes, consequences, and control [J]. J Hazard Mater, 2007, 140(1/2): 7-44.
    Klemens R, Gieras M, Kaluzny M. Dynamics of dust explosions suppression by means of extinguishing powder in various industrial conditions [J]. J Loss Prev Process Ind, 2007, 20(4/5/6): 664-674.
    Wu C Y, Ruddy O M, Bentham A C, et al. Modelling the mechanical behaviour of pharmaceutical powders during compaction [J]. Powder Technol, 2005, 152(1/2/3): 107-117.
    Ni X, Kuang K, Yang D, et al. A new type of fire suppressant powder of NaHCO3/zeolite nanocomposites with core-shell structure [J]. Fire Saf J, 2009, 44(7): 968-975.
    Wu X T, Hu S S, Tian J. Stress-measurement method by PVDF gauge and its application to impact test for concrete [J]. Explosion and Shock Waves, 2007, 27(5): 411-415. (in Chinese)
    巫绪涛, 胡时胜, 田杰. PVDF应力测量技术及在混凝土冲击实验中的应用 [J]. 爆炸与冲击, 2007, 27(5): 411-415.
    Ma H H. Research on the principle and application of the high-safe detonator [D]. Hefei: University of Science and Technology of China, 2008. (in Chinese)
    马宏昊. 高安全雷管机理与应用的研究 [D]. 合肥: 中国科学技术大学, 2008.
    Jin S H, Song Q C. Explosive Theories [M]. Xi'an: Northwestern Polytechnical University Press, 2010: 24-37. (in Chinese)
    金韶华, 松全才. 炸药理论 [M]. 西安: 西北工业大学出版社, 2010: 24-37.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(5931) PDF downloads(317) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return