| N2O基单组元气体推进剂的爆炸事故分析 |
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| 引用本文： | 朱辛育,李智鹏,蒋榕培,李玉艳,徐森,刘大斌.N2O基单组元气体推进剂的爆炸事故分析[J].爆破器材,2020,49(1):60-64. |
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| 作者姓名： | 朱辛育 李智鹏 蒋榕培 李玉艳 徐森 刘大斌 |
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| 作者单位： | ①南京理工大学化工学院（江苏南京，210094） ②北京航天试验研究所（北京，100074） ③国家民用爆破器材质量监督检验中心（江苏南京，210094） |
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| 摘 要： | 针对新型N2O基单组元气体推进剂在发动机试车过程中发生的爆炸事故，通过推进剂的基础安全特性实验与管道阀门的结构分析，开展了事故原因分析。气体推进剂点火能量的实验结果表明，临界点火能量在0.25~0.50 mJ之间。在实验管道中的火焰传播速度能达到410 m/s。临界着火温度的实验结果显示,样品的最低着火温度为135 ℃。阀门的工作原理与结构分析结果显示,在阀门通电开启过程中，会对活塞上方4.06 mL的气体产生压缩作用。根据绝热方程计算可知,气体在压缩过程中温度可升至193.7 ℃。对比实验与理论计算可以推知,阀门启动过程中的压缩作用，可能是发生爆炸事故的根本原因。
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| 关 键 词： | 氧化亚氮 气体推进剂 实验事故分析 电磁阀 绝热压缩 |
Explosion Accident Analysis of N2O-base Gas Monopropellant |
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| ZHU Xinyu,LI Zhipeng,JIANG Rongpei,LI Yuyan,XU Sen,LIU Dabin.Explosion Accident Analysis of N2O-base Gas Monopropellant[J].Explosive Materials,2020,49(1):60-64. |
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| Authors: | ZHU Xinyu LI Zhipeng JIANG Rongpei LI Yuyan XU Sen LIU Dabin |
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| Affiliation: | ① School of Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094) ② Beijing Institute of Aerospace Testing Technology (Beijing, 100074) ③ National Quality Supervision and Inspection Center for Industrial Explosive Materials (Jiangsu Nanjing, 210094) |
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| Abstract: | Root cause analysis through basic safety characteristic experiment of fuel and the structure analysis of piping valve was conducted on the explosion accident of the new N2O-base single gas component propellant during engine test.The experimental results show that the critical ignition energy of the gas propellant is in the range of 0.25 mJ to 0.50 mJ,and the propagation velocity of flame within the experimental pipe can reach to 410 m/s.Critical ignition temperature test results show that the minimum ignition temperature of the sample is 135℃.Valve structure and working principle analysis results show that the electrified opening of the valve will impose a compression over the 4.06 mL gas above the piston.The adiabatic equation calculation shows that gas temperature can be up to 193.7℃during the compression.It can be inferred from the comparative test and theoretical calculation that the compression action in the valve start-up process may be the root cause of the explosion accident. |
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| Keywords: | nitrous oxide gas propellant experimental accident analysis electromagnetic valve adiabatic compression |
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