水喷雾对NC-NG双基火药燃烧的抑制作用  

Inhibitory Effect of Water Spray on Combustion of NC-NG Double-Base Gunpowder

作　　者：司振宽 李权威[1] 杜宇轩 SI Zhenkuan;LI Quanwei;DU Yuxuan(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing,210094)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094

出　　处：《爆破器材》2023年第3期39-44,共6页Explosive Materials

摘　　要：为研究水喷雾对NC-NG双基火药药柱燃烧的抑制作用,搭建了由燃烧室、输水系统、数据采集系统等组成的灭火实验平台。首先,对NC-NG双基火药进行自由燃烧测试。其次,对水平放置及竖直放置条件下的NC-NG双基火药施加水压为0.15、0.30、0.45 MPa和0.60 MPa的水喷雾进行灭火实验,获取火焰的动态变化图像以及温度、热通量的变化曲线。最后,对灭火后的溶液进行红外光谱分析。结果表明:在一定压力范围内,水压越大,水喷雾对NC-NG双基火药的灭火效果越好。结合NC-NG双基火药的燃烧机理,对灭火后的溶液进行红外光谱分析认为,在灭火过程中,水喷雾通过消耗NC-NG双基火药的中间燃烧产物NO 2,从而在一定程度上抑制燃烧,最终实现灭火。此发现可为针对火炸药火灾燃烧的灭火技术提供新的技术方向。A fire-extinguishing experimental platform consisting of a combustion chamber,a water delivery system,and a data acquisition system was built to study the inhibitory effect of water spray on the combustion of NC-NG double-base gunpowder.The free combustion test of NC-NG double-base gunpowder was carried out.The NC-NG double-base gunpowder under the conditions of horizontal placement and vertical placement was applied with water spray with water pressure of 0.15,0.30,0.45 MPa and 0.60 MPa to carry out fire extinguishing experiments.The dynamic change image of the flame,as well as the change curves of temperature and heat flux were obtained.Infrared spectrum analysis was conducted on the solution after extinguishing the fire.The results show that,within a certain pressure range,the higher the water pressure,the better the fire extinguishing outcome of water spray on NC-NG double-base gunpowder.Combining the combustion mechanism of NC-NG double-base gunpowder and the infrared spectrum analysis of the solution after fire extinguishing,it is considered that the water spray inhibits combustion to a certain extent by consuming the intermediate combustion product NO 2 of NC-NG double-base gunpowder during the fire-extinguishing process,and ultimately achieves fire extinguishing.It could provide a new technical direction for the fire extinguishing technology of explosive fire and combustion.

关 键 词：双基火药 水喷雾 燃烧抑制 火炸药燃烧机理 

分 类 号：TQ560.7[化学工程—炸药化工] TJ55[兵器科学与技术—军事化学与烟火技术]