TAN Ying-xin1, HAN Yi2
（1. School of Chemical and Environmental Engineering, North University of China, Taiyuan 030051, China; 2. PLA Unit 63961, Beijing 100012, China）
Abstract： In coal industry, gas explosion accidents emerge constantly, causing enormous casualties and poorer material property. In the course of studying gas exploding mechanism, the propagation velocity of the flame wave front is one of the most important factors. A set of flame velocity measuring system was designed according to the horizontal pipelined experimental facility of North University of China to study the effects of the quantity and blockage ratio of the circle ring obstacle on the flame propagation velocity in the inclosed tube.The research results show that the obstacle has obviously accelerating effect on the flame wave of gas explosion. With the increase of quantity and blockage ratio of the obstacle, the flame accelerating effect becomes more obvious and the flame accelerating persistence is intenser, of which the effect of the quantity of the obstacle on the flame accelerating persistence is larger, but the effect of the blockage ratio of the obstacle on the flame accelerating persistence is not obvious.
Key words： flame propagation velocity； quantity； blockage ratio; gas explosion
CLD number： TD712 Document code： A
Article ID： 1674-8042（2017）01-0021-06 doi： 10.3969/j.issn.1674-8042-2017-01-004
References
［1］GUI Xiao-hong, YU Hua, LIN Bo-quan. Experimental research on flame and superpressure in gas explosion. Jiangsu Coal, 2000, (1): 14-16.
［2］XIE Li-feng, LIU Jia-cong, WANG Xin-qun, et al. Experimental measurement of laminar burning velocity of dust air mixtures. Explosion and Shock Waves, 1999, 19(1): 33-38.
［3］PAN Hong-liang, Pickenacker O, Trimis D, et al. Experimental investigation of flame propagation of methan mixture in porous media. Journal of Engineering Thermophysics, 2006, 27(5): 897-899.
［4］FU Wei-Yong, ZHANG Yong-kang, WANG Qing-an. Combustion.Beijing: Higher Education Press, 1987.
［5］JIA Zhen-zhen, LIN Bai-quan. Analysis on flame acceleration mechanism and affecting factors of methane explosion propagation in duct. Mineral Engineering Research, 2009, 24（3）： 57-62.
水平管道中瓦斯爆炸火焰传播速度测量
谭迎新1， 韩意2
（1. 中北大学 化工与环境学院， 山西 太原 030051； 2. 中国人民解放军 63961 部队， 北京 100012）
摘要:在煤炭工业中， 瓦斯爆炸事故经常发生， 造成了巨大的人员伤亡以及材料性能的破坏。 在研究瓦斯爆炸机理过程中， 火焰前端传播速度是最重要的因素之一。 根据中北大学水平管道实验装置设计了一套火焰速度测量系统， 用于研究在密闭管道内圆环障碍物的数量和阻塞比对火焰传播速度的影响。 结果表明， 障碍物对瓦斯爆炸产生的火焰具有明显的加速作用。 随障碍物数量和阻塞比的增加， 火焰加速更加明显且持续更剧烈。 其中， 障碍物数量对火焰加速持续的作用更大， 而障碍物阻塞比的作用不明显。
关键词:火焰传播速度； 数量； 阻塞比； 气体爆炸
引用格式：TAN Ying-xin, HAN Yi. Propagation velocity measurement for flame of gas explosion in horizontal tube. Journal of Measurement Science and Instrumentation, 2017, 8(1)： 21-26. ［doi： 10.3969／j.issn.1674-8042.2017-01-004］
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