Experimental study on effect of length of branch on intensity of gasoline-air mixture explosion in pipeline

doi:10.16265/j.cnki.issn1003-3033.2017.02.010

Abstract

Abstract: In order to study the effect of length of branch pipe on gasoline-air mixture explosion, experiments were carried out by using an experimental platform established by the authors. The volume fraction of the gasoline in the mixture was 1.75%. The changes of overpressure, rate of pressure rise, flame propagation velocity and flame intensity were analyzed. The results indicate that overpressure, rate of pressure rise, flame propagation velocity, flame intensity and flame duration are strengthened with the existence of branch pipe, and the longer the branch pipe is, the greater the effect will be, and that the pressure relief effect of area sudden expansion in the shorter branch and the dissipation effect of wall play an important role in the declining of flame propagation velocity in the part of the pipeline beyond the branch.

Key words: gasoline-air mixture explosion, branch pipe, explosion wave, flame, simulation experiment

CLC Number:

X932

JIANG Xinsheng, WEI Shuwang, XU Jiannan, LI Guoqing, YUAN Guangqiang, LI Yangchao. Experimental study on effect of length of branch on intensity of gasoline-air mixture explosion in pipeline[J]. China Safety Science Journal, 2017, 27(2): 53-57.

References

[1] 冯刊民,王丰,唐清.油库事故分析与预防[M].北京: 中国石化出版社, 2005:56-62.
FENG Kanmin, WANG Feng, TANG Qing. Analysis and prevent of oil depot accident[M].Beijing: China Petrochemical Press, 2005:56-62.
[2] ZHU Yi, QIAN Xinming, LIU Zhenyi, 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试验研究[J]. 火灾科学, 2001, 10(4): 209-212.
WANG Hanliang, ZHOU Kaiyuan, XIA Changjing. Experimental studies of the propagation of detonation waves through the bends[J].Fire Safety Science,2001,10(4):209-212.
[4] ZHAI Cheng, LIN Baiquan, YE Qing, 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 Chuanjie, LIN Baiquan, YE Qing, 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试验研究[J]. 火灾科学, 2006, 15(3): 111-115.
YANG Zhi, ZHOU Kaiyuan, XIE Lijun, et al. Experimental study of flame transition in the Z-type tube[J].Fire Safety Science,2006,15(3):111-115.
[7] YE Qing, LIN Baiquan, JIA Zhenzhen, et al. The propagation law and analysis of gas explosion in U type duct[J]. Journal of Coal Science and Engineering (China), 2008, 14(2): 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 Baiquan,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 Congguang, LIN Baiquan. Experimental research of tube furcations 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 Baiquan JIAN Congguang. 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 Guoqing, WU Songlin, 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 Peili, DU Yang, ZHOU Yi, 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): 1 279-1 284.
[13] 蒋新生, 魏树旺, 袁广强, 等. 狭长管道油气爆炸流场分布特征规律及分析[J]. 中国安全生产科学技术, 2016, 12(8): 130-134.
JIANG Xinsheng, WEI Shuwang, YUAN Guangqiang, et al. The distribution rule of gasoline-air mixture explosion flow field in narrow pipe[J]. Journal of Safety Science and Technology, 2016, 12(8): 130-134.

[1]	GONG Yawen, LIU Yingchun, JING Mingju, ZHANG Yingnan, ZHANG Bin. Preparation and flame retardant properties of silica gel foam [J]. China Safety Science Journal, 2022, 32(5): 127-133.
[2]	JIANG Hua, LIU Changchun, HUANG Linyuan, WU Pengzhi, DENG Tiandiao. Investigation on characteristics of dual nozzle jet diffusion flame under cross-wind with water mist [J]. China Safety Science Journal, 2022, 32(1): 157-163.
[3]	XING Chaoliang, HUANG Xianjia, HE Le, ZHU He, ZHENG Zeming. Experimental study on flame merging behavior of spilled flame generated by flame impinging on obstruction [J]. China Safety Science Journal, 2021, 31(4): 171-176.
[4]	WANG Lei. Experimental study on effect of spherical obstacle on gas deflagration flame [J]. China Safety Science Journal, 2021, 31(3): 54-59.
[5]	WANG Yu, XING Jia, ZHOU Yingtong. Simulation analysis of window fire spread in super high-rise building at different temperatures [J]. China Safety Science Journal, 2021, 31(3): 121-127.
[6]	JING Guoxun, HE Xiang, GUO Shaoshuai, ZHU Sijia. Influence of sealing materials on gas explosion characteristics in bifurcated pipes [J]. China Safety Science Journal, 2021, 31(11): 64-70.
[7]	SHI Yongguo, TANG Qing, HU Siyuan, DING Chao, WANG Xinqun. Inerting effects of flue gas on explosion of powder coating/air mixtures [J]. China Safety Science Journal, 2021, 31(11): 71-77.
[8]	WANG Feiyue, LIU Hui, YAN Long. Synergistic effect of tungsten tailing filler in intumescent fire-retardant coatings [J]. China Safety Science Journal, 2021, 31(10): 46-53.
[9]	OU Hongxiang, YE Qing, XU Jiacheng, LIU Ben, SHAN Xueying, JIANG Juncheng. Study on performance of F-ZrP@Co-MOF synergistic intumescent flame retardant polypropylene [J]. China Safety Science Journal, 2021, 31(1): 52-59.
[10]	ZHANG Yutao, ZHANG Yujie, LI Yaqing. Simulation study on fire propagation characteristics on facade of concave structure buildings [J]. China Safety Science Journal, 2020, 30(8): 70-78.
[11]	LI Yaozhuang, FENG Yuwei, XU Zhisheng, YAN Long, JIA Hongyu. Effect of clam shell bio-filler on flame retardancy and smoke suppression properties of intumescent fire retardant coatings [J]. China Safety Science Journal, 2020, 30(7): 41-47.
[12]	HAN Ji, SHAN Xueying, SHAO Hui, GUO Hui, LI Jinchun. Preparation of modified β-CD and flame retardancy of EP [J]. China Safety Science Journal, 2020, 30(7): 107-113.
[13]	XIAO Junfeng, CHEN Jian, DAI Chengcheng, LU Ping. Influencing factors on explosion and toxicity of high-sulfur natural gas [J]. China Safety Science Journal, 2020, 30(6): 43-49.
[14]	LIU Jing, CHEN Xianfeng, ZHANG Bo, GAO Wenao, ZHAO Qi, SUN Weikang. Impacts of methane content on compound flame propagation characteristics of methane-coal dust [J]. China Safety Science Journal, 2020, 30(6): 106-112.
[15]	LI Zhisheng, GAO Yunji, LI Xiaosong, ZHANG Yuchun, MAO Pengfei. Flame characteristics of ceiling jet flow driven by strong plume in bifurcation tunnels [J]. China Safety Science Journal, 2020, 30(6): 166-171.