In order to study the effect of different positions of branch pipes on gasoline-air mixture explosion,an experiment system of gasoline-air mixture explosion was set up.Gasoline-air mixture explosion experiments with 1.75% oil gas concentration were conducted in a straight pipe and with different positions of branch.The changes of overpressure,rate of pressure rise,flame propagation velocity and flame intensity were analyzed.Experiment results indicate that overpressure,rate of pressure rise,flame propagation velocity,flame intensity,and flame duration are strengthened with the existence of the branch pipe,and when the branch pipe is farther from the ignition point,the effect is greater; the effect of flame propagation velocity on flame duration is also big; the changing curve of overpressure before the branch pipe can be divided into 4 phases: accelerated increasing,inflation pressure relief,oscillation strengthened,and dying out of oscillation; the changing curve of overpressure after branch pipe can be divided into 3 phases: accelerated increasing,oscillation strengthened and dying out of oscillation.
蒋新生，魏树旺，何标，徐建楠，周建忠，袁广强. 不同位置分支管道对油气爆炸强度的影响[J]. 振动与冲击, 2017, 36(8): 231-236.
JIANG Xinsheng,WEI Shuwang,HE Biao,XU Jiannan,ZHOU Jianzhong,YUAN Guangqiang. Effect on explosion intensity of gasoline-air mixture in a pipe containing different positions of branch. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(8): 231-236.
[1] 冯刊民,王丰,唐清.油库事故分析与预防[M]. 中国石化出版社, 2005.
[2] Zhu Y, Qian X, Liu Z, et al. Analysis and assessment of the Qingdao crude oil vapor explosion accident: Lessons learnt[J]. Journal of Loss Prevention in the Process Industries, 2015, 33: 289-303.
[3] 王汉良, 周凯元, 夏昌敬. 气体爆轰波在弯曲管道中传播特性的实验研究[J]. 火灾科学, 2001, 10(4): 209-212.
Wang Han-liang, Zhou Kai-yuan, Xia Chang-jing. Experimental studies of the propagation of detonation waves through the bends[J].Fire Safety Science,2001,10(4):209-212.
[4] Cheng Z, Bai-quan L, Qing Y, et al. Influence of geometry shape on gas explosion propagation laws in bend roadways[J]. Procedia Earth and Planetary Science, 2009, 1(1): 193-198.
[5] Zhu C, Lin B, Ye Q, et al. Effect of roadway turnings on gas explosion propagation characteristics in coal mines[J]. Mining Science and Technology (China), 2011, 21(3): 365-369.
[6] 杨志, 周凯元, 谢立军, 等. Z 型管道中气体火焰传播规律的实验研究[J]. 火灾科学, 2006, 15(3): 111-115.
Yang Zhi, Zhou Kai-yuan, XieLi-jun, et al. Experimental study of flame transition in the Z-type tube[J].Fire Safety Science,2006,15(3):111-115.
[7] Ye Q, Lin B, Jia Z, et al. The propagation law and analysis of gas explosion in U type duct[J]. Journal of Coal Science and Engineering (China), 2008, 14: 252-256.
[8] 林柏泉,叶青,翟成,等.瓦斯爆炸在分岔管道中的传播规律及分析[J].煤炭学报,2008,33(2):136-139.
Lin Bai-quan,Ye Qing, Zhai Cheng, et al. The propagation rule of methane explosion in bifurcation duct[J]. Journal of China Coal Society,2008,33(2):136-139.
[9] 翟成, 菅从光, 林柏泉. 管道分叉对瓦斯爆炸火焰传播速度影响的研究[J]. 江苏煤炭, 2004 (1): 46-47.
Zhai Cheng, Jian Cong-guang, Lin Bai-quan. Experimental research of tube furcation’s influence on flame transmission speed in gas explosion[J]. Energy Technology and Management, 2004 (1): 46-47.
[10] 翟成, 林柏泉, 菅从光. 瓦斯爆炸火焰波在分叉管路中的传播规律[J]. 中国安全科学学报, 2005, 15(6): 69-72.
Zhai Cheng, , Lin Bai-quan Jian Cong-guang. Transmission rules of gas explosion flame in divaricated tube[J]. China Safety Science Journal, 2005, 15(6): 69-72.
[11] 杜扬, 李国庆, 吴松林, 等. T 型分支管道对油气爆炸强度的影响[J]. 爆炸与冲击, 2015, 35(5): 729-734.
Du Yang, Li Guo-qing, Wu Song-lin, et al. Explosion intensity of gasoline-air mixture in the pipeline containing a T-shaped branch pipe[J]. Explosion and Shock Waves, 2015, 35(5): 729-734.
[12] Zhang P, Du Y, Zhou Y, et al. Explosions of gasoline–air mixture in the tunnels containing branch configuration[J]. Journal of Loss Prevention in the Process Industries, 2013, 26(6): 1279-1284.
