高能燃烧剂销毁金属壳体装药的安全压力计算
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摘要
为防止采用高能燃烧剂销毁带金属壳体的装药时发生燃烧转爆轰的现象,分析了装药燃烧转爆轰的机理,研究了装药燃烧时的壳体内部的压力变化情况,结合气体动力学压力关系式,推导了稳定燃烧时的压力计算表达式;以某型防坦克地雷为研究对象,计算了燃烧时的平衡压力,并结合试验分析了开孔直径与压力的变化关系。结果表明:燃烧产物质量生成速率曲线与产物排出速率曲线存在交点时,装药能够维持稳定燃烧,否则极易发生燃烧转爆轰现象。
To prevent the occurrence of deflagration to detonation transition when explosives with metal shell were destroyed by the high energy combustion destruction method,mechanism of deflagration to detonation transition was analyzed,and interior pressure change of the shell when the explosives were burning was studied. Aerodynamic pressure relation was combined to deduce the stable combustion pressure calculating expression. One kind of anti-tank mines was used as the subject of research,equilibrium pressure during combustion was calculated. Relationship between the aperture and interior pressure was analyzed according to the experiments. The results show that the explosives could combust steady when intersection of the product formation rate curve and discharge rate curve exists. Otherwise,it is prone to result in the phenomenon of deflagration to detonation transition.
To prevent the occurrence of deflagration to detonation transition when explosives with metal shell were destroyed by the high energy combustion destruction method,mechanism of deflagration to detonation transition was analyzed,and interior pressure change of the shell when the explosives were burning was studied. Aerodynamic pressure relation was combined to deduce the stable combustion pressure calculating expression. One kind of anti-tank mines was used as the subject of research,equilibrium pressure during combustion was calculated. Relationship between the aperture and interior pressure was analyzed according to the experiments. The results show that the explosives could combust steady when intersection of the product formation rate curve and discharge rate curve exists. Otherwise,it is prone to result in the phenomenon of deflagration to detonation transition.
引文
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[2]彭培根.燃烧转爆轰过程及机理[J].火炸药,1982,5(1):21-28.
[3]荣光富.燃烧与爆炸相互转换试验及应用研究[D].南京:南京理工大学,2006:17-31.RONG G F.Experiments and application research about the deflagration-to-detonation transition[D].Nanjing:Nanjing University of Science and Technology,2006:17-31.
[4]杨涛,金志明,栗保明.高装填密度火药颗粒床燃烧转爆轰的数值分析[J].兵工学报弹箭分册,1991(3):14-22.
[5]王建,文尚刚.以HMX为基的两种压装高密度炸药的燃烧转爆轰实验研究[J].高压物理学报,2009,23(6):441-446.WANG J,WEN S G.Experimental study on deflagrationto-detonation transitionin two pressed high-density explosives[J].Chinese Journal of High Pressure Physics,2009,23(6):441-446.
[6]LEURET F,CHAISSE F,PRESLES H N.Experimental study of the low velocity detonation regime during the deflagration to detonation transition in a high density explosive[C]//Proceedings of the 11th Symposium(International)on Detonation.Colorado,1998.
[7]陈朗,王飞,伍俊英,等.高密度压装炸药燃烧转爆轰研究[J].含能材料,2011,19(6):697-704.CHEN L,WANG F,WU J Y,et al.Investigation of the deflagration to detonation transition in pressed high density explosives[J].Chinese Journal of Energetic Materials,2011,19(6):697-704.
[8]易建坤,贺五一,吴腾芳,等.高热剂在弹药销毁领域应用初探[J].工程爆破,2004,10(4):21-25.YI J K,HE W Y,WU T F,et al.Preliminary investigation into application of thermite in destructionof ammunition[J].Engineering Blasting,2004,10(4):21-25.
[9]易建坤,吴腾芳,贺五一.用于弹药燃烧销毁的高热剂配方试验研究[J].爆破,2005,22(1):107-111.YI J K,WU T F,HE W Y.Experimental study on the composition of thermite applied in the ammunition disposal[J].Blasting,2005,22(1):107-111
[10]易建坤,吴腾芳.高热剂燃烧法销毁薄壁弹药的试验研究[J].火工品,2005(1):17-21.YI J K,WU T F.Experimental study on disposal of thin-shell ammunition by thermite combustion[J].Initiators&Pyrotechnics,2005(1):17-21.
[11]王泽山,张丽华,曹欣茂.废弃火炸药的处理与再利用[M].北京:国防工业出版社,1994.
[12]SONG E.Thermite destructive device:US 5698812[P].1997-12-16.
[13]王保柱.火药实用燃烧定律[J].弹道学报,1991(2):15-23.WANG B Z.The practical combustion-low of gunpowder[J].Journal of Ballistics,1991(2):15-23.
[14]叶序双.爆炸作用基础[M].南京:解放军理工大学工程兵工程学院,2003(2):45-70.YE X S.Foundation of explosion[M].Nanjing:PLA University of Science and Technology,2003(2):45-70.
[15]张涵信.近代高速气体动力学现状[J].力学学报,1963,6(4):249-286.ZHANG H X.Modern developments in recent highspeed aerodynamics[J].Chinese Journal of Theoretical and Applied Mechanics,1963,6(4):249-286.