单推-3火灾刺激下爆炸当量及其影响因素分析  

Study on Explosion Equivalent and its Influencing Factors of DT-3 under External Flame Stimulation

作　　者：徐飞扬 章菁菁 康立敏 姚亚东 夏曼曼 马智勇 过光飞 吴三震 徐森[1] XU Fei-yang;ZHANG Jing-jing;KANG Li-min;YAO Ya-dong;XIA Man-man;MA Zhi-yong;GUO Guang-fei;WU San-zhen;XU Sen(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;NUST&CBSW Safety science and technology Co.,LTD.,Nanjing 210094,China;Beijing Institute of Aerospace Testing Technology,Beijing 100074,China;An Hui Tianming Blasting Engineering Co.,Ltd.,Chuzhou 239000,China)

机构地区：[1]南京理工大学化学与化工学院,南京210094 [2]南京理工中爆安全科技有限公司,南京210094 [3]北京航天试验技术研究所,北京100074 [4]安徽天明爆破工程有限公司,滁州239000

出　　处：《爆破》2024年第2期245-252,共8页Blasting

基　　金：国家自然基金,面上项目,No.12272184;中国博士后科学基金面上资助,No.2023M731695;中央高校基本科研业务费专项资金资助,No.30922010503;江苏省卓越博士后计划资金资助。

摘　　要：为了研究单推-3液体推进剂在储运和使用过程中遭遇火灾刺激时的爆炸当量,利用极不敏感引爆物质(EIDS)隔板试验确定单推-3的冲击波感度,采用高速摄像机、红外热成像仪、压力数据采集系统分别记录火烧刺激条件下不同尺度(18和120 kg)单推-3储罐的燃爆过程、火球表面最高温度以及冲击波超压峰值,进一步计算了爆炸TNT当量。结果表明:单推-3在强冲击波的直接作用下不能传播爆轰。不同包装强度单推-3在外部火灾条件下发生了爆燃,甚至是整体爆轰反应,制式包装18和120 kg单推-3爆炸平均TNT当量分别为0.629和0.0293,其产生的冲击波效应与尺度效应之间不存在正相关关系。显然,样品的制式包装设计强度对其爆炸烈度具有显著影响,应在实际使用允许范围内,降低单推-3液体推进剂壳体的设计压力,以有效减弱其整体爆炸危险性。To study the explosion equivalent of DT-3 and its influencing factors caused by fire stimulus during storage,transportation and use,the propagate detonation ability of that was studied by the extremely insensitive to detonating substances(EIDS)gap test.High-speed cameras and a shock wave pressure acquisition system were utilized to obtain information on the deflagration processes and shock wave hazards of DT-3 under external flame effect.Additionally,an infrared thermal imager was employed to determine the highest temperature of the surface fireball.Further calculations were conducted to determine the explosive TNT equivalent of 18 kg and 120 kg DT-3 samples.The experimental results indicate that direct exposure to a strong shockwave does not cause DT-3 propagation detonation.However,different packing strengths can lead to deflagration events under external fire conditions,potentially resulting in an overall detonation reaction.The average TNT equivalents for standard packaged 18 kg and 120 kg DT-3 samples were found to be 0.629 and 0.0293 respectively.Furthermore,there is no positive correlation between the scale effect and shock wave impact.Under fire stimulus conditions,package design strength significantly influences the explosive characteristics of DT-3.To enhance safety measures,it is recommended that package design strength be reduced within acceptable limits for actual usage in order to effectively mitigate the risk of detonation hazard.

关 键 词：单推-3 冲击波感度 火灾刺激 爆炸当量 壳体设计压力 

分 类 号：O69[理学—化学]