环氧丙烷/空气混合物气-液两相燃爆特性  

Vapor⁃Liquid Two⁃Phase Combustion and Explosion Characteristics of Propylene Oxide/Air Mixtures

作　　者：蒋八运 程扬帆[1,2] 李世周 钱家祺 韦箫 薛茹君[1] JIANG Ba-yun;CHENG Yang-fan;LI Shi-zhou;QIAN Jia-qi;WEI Xiao;XUE Ru-jun(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China;Anhui Engineering Laboratory of Explosive Materials and Technology,Anhui University of Science and Technology,Huainan 232001,China;School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]安徽理工大学安徽省爆破器材与技术工程实验室,安徽淮南232001 [3]安徽理工大学安全科学与工程学院,安徽淮南232001

出　　处：《含能材料》2023年第7期699-706,共8页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金面上项目(12272001,11972046);安徽省自然科学基金优青项目(2108085Y02);安徽理工大学研究生创新基金(2022CX2109)。

摘　　要：为了探究环氧丙烷云雾燃爆特性,采用20 L球形液体燃料爆炸测试系统,研究了点火延迟时间和质量浓度对环氧丙烷/空气混合物爆炸特性参数的影响,同时采用高速相机拍摄火焰传播过程,并利用比色测温技术重构了火焰温度场动态云图,探讨了环氧丙烷质量浓度对火焰温度的影响规律。结果表明:随着点火延迟时间的增加,最大爆炸超压和最大超压上升速率均呈先增大后减小的变化趋势,燃烧持续时间与之相反,最佳点火延迟时间为100 ms,此时最大爆炸超压达到最大值0.89 MPa;随着环氧丙烷质量浓度的增加,最大爆炸超压、最大超压上升速率和火焰最大平均温度均先增加后减少,在环氧丙烷质量浓度为498 g·m^(-3)时,最大爆炸超压和最大超压上升速率均最大,分别为1.02 MPa和60.91 MPa·s^(-1),但最大平均温度对应的质量浓度明显比最大爆炸超压低,在质量浓度为415 g·m^(-3)时火焰平均温度峰值达到最大值1937 K。研究成果可为燃料空气炸药爆轰性能优化和毁伤效能评估提供参考。To explore the explosion characteristics of propylene oxide mist,a 20 L spherical liquid fuel explosion test system was used to study the effects of ignition delay time and mass concentration on the explosion characteristics of propylene oxide/air mixture.At the same time,high-speed cameras were used to photograph the flame propagation process,the dynamic distribu-tion images of flame temperature field was reconstructed by colorimetric pyrometer technology and the effect of mass concentra-tion of propylene oxide on the flame temperature was discussed.The experimental results showed that with the increase of igni-tion delay time,the maximum explosion overpressure and the rise rate of maximum overpressure increased first and then de-creased,while the combustion duration was on the contrary.The optimal ignition delay time was 100 ms with the maximum ex-plosion overpressure reached 0.89 MPa.With the increase of the mass concentration of propylene oxide,the maximum explosion overpressure,maximum overpressure rise rate and maximum average flame temperature were all initially increased and then de-creased.When the mass concentration was 498 g·m^(-3),the maximum explosion overpressure and maximum overpressure rise rate were both the highest,which were 1.02 MPa and 60.91 MPa·s^(-1),respectively.But the mass concentration corresponding to maximum average flame temperature was significantly lower than that of maximum explosion overpressure.When the mass con-centration was 415 g·m^(-3),the flame average temperature reached the maximum value of 1937 K.The research results can pro-vide reference for optimization of detonation performance and evaluation of damage efficiency of the fuel air explosive.

关 键 词：环氧丙烷 爆炸超压 火焰温度 比色测温 特性实验 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O38[理学—流体力学]