Analysis of oil and gas detonation characteristics under different water storage height

doi:10.16265/j.cnki.issn1003-3033.2026.07.1213

Abstract

Abstract:

To prevent and control gas deflagration accidents in confined spaces, a numerical model of a horizontal pipeline was established. The pipeline was set to be closed on the left and open on the right. Through this model, the effects of different water storage levels on the oil and gas deflagration features inside the confined space were investigated. The results show that under conditions without water storage, the overpressure time history at each measurement point in the horizontal pipeline first increases and then decreases, followed by Helmholtz oscillations and eventual stabilization. As the water storage height is increased, the main peak of the overpressure time history is shifted from a single-peak structure to a double-peak or multi-peak structure similar to the state without water storage. Furthermore, after the maximum overpressure peak is reached, irregular oscillations are generated, whereby the Helmholtz oscillation observed in the absence of water storage is disrupted, and the overpressure peak is caused to decay significantly. The heat generated by the deflagration is absorbed, contact with the flame is increased, and the concentration of key free radicals that drive temperature rise is suppressed by the presence of water storage. Thereby, the decline in deflagration characteristics related to temperature within the pipeline is accelerated. Flame propagation is inhibited by water storage. As the reaction proceeds, heat is absorbed by the water storage, and large amounts of water vapor are produced through evaporation. The unreacted hydrocarbons and oxygen are diluted by the increased water vapor content. Consequently, the reaction rate is further reduced, and a significant decrease in flame propagation speed during the oil and gas deflagration is caused.

Key words: water storage height, confined space, oil and gas deflagration, free radicals, numerical simulation

CLC Number:

X932爆炸安全与防火、防爆

Lyu Pengfei, Zhu Qing, Gao Xiaopeng, Shen Jing, Yang Kai. Analysis of oil and gas detonation characteristics under different water storage height[J]. China Safety Science Journal, 2026, 36(7): 36-43.

Figures/Tables 11

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Table 1

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References 20

[1]	山东省青岛市“11·22”中石化东黄输油管道泄漏爆炸特别重大事故调查报告[OL].(2013-06-26). https://www.mem.gov.cn/gk/sgcc/tbzdsgdcbg/2013/201306/t20130626_245228.shtml.
[2]	Xiao Jun, Zhang Peili, Wu Jingsi, et al. Experimental analysis of overpressure characteristics of gasoline-air mixture explosion in multi-branch tubes[J]. Energy Reports, 2022, 8:111-121.
[3]	杜扬, 李国庆, 李阳超, 等. T型分支管道对油气爆炸压力的影响[J]. 爆炸与冲击, 2017, 37(2): 323-331.
	Du Yang, Li Guoqing, Li Yangchao, et al. Effects of a T-shaped branch pipe on overpressure of gasoline-air mixture explosion[J]. Explosions and Shocks, 2017, 37(2): 323-331.
[4]	杜扬, 李蒙, 李国庆, 等. 含双侧分支结构受限空间油气泄压爆炸超压特性与火焰行为[J]. 化工进展, 2018, 37(7): 2557-2564.
	Du Yang, Li Meng, Li Guoqing, et al. Effects of bilateral branches structure on characteristics of gasoline-air mixtures explosion overpressure and flame gasoline-air mixtures explosion overpressure and flame[J]. Chemical Progress, 2018, 37(7): 2557-2564.
[5]	王建, 张培理, 段纪淼, 等. 半封闭分支结构坑道内油气爆炸的超压特性和火焰行为耦合关系研究[J]. 当代化工, 2022, 51(12): 2947-2952.
	Wang Jian, Zhang Peili, Duan Jimiao, et al. Study on the coupling relationship between overpressure characteristics and flame behavior of oil and gas explosion in a semi-closed branched tunnel[J]. Contemporary Chemical, 2022, 51(12): 2947-2952.
[6]	王建, 王冬, 张培理, 等. 三种多分支结构坑道内油气爆炸过程的大涡模拟[J]. 当代化工, 2019, 48(8): 1811-1815.
	Wang Jian, Wang Dong, Zhang Peili, et al. Large eddy simulation of the explosion process of oil and gas in three kinds of tunnels with multi-branched structure[J]. Contemporary Chemical, 2019, 48(8): 1811-1815.
[7]	蒋新生, 魏树旺, 何标, 等. 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, et al. Effect on explosion intensity of gasoline-air mixture in a pipe containing different positions of branch[J]. Vibration and Shock, 2017, 36(8): 231-236.
[8]	刘冲, 杜扬, 张培理, 等. 多分支管道油气爆炸特性大涡模拟[J]. 中国安全生产科学技术, 2019, 15(1): 134-138.
	Liu Chong, Du Yang, Zhang Peili, et al. Large eddy simulation on explosion characteristics of gasoline-air mixture in multi-branch pipeline[J]. Journal of Safety Science and Technology, 2019, 15(1): 134-138.
[9]	Jiang Xinsheng, Yu Binbin, Xu Jiannan, et al. Study on the deflagration reaction process of oil gas in long-narrow confined space based on PLIF and flame spectra[J]. Journal of Loss Prevention in the Process Industries, 2020,64:DOI:10.1016/j.jlp.2020.104088.
[10]	韦世豪, 杜扬, 王世茂, 等. 不同形状受限空间内油气爆燃特性的实验研究[J]. 中国安全生产科学技术, 2017, 13(5): 41-47.
	Wei Shihao, Du Yang, Wang Shimao, et al. Experimental study on deflagration characteristics of gasoline-air mixture in confined space with different shapes[J]. Journal of Safety Science and Technology, 2017, 13(5): 41-47.
[11]	王世茂, 杜扬, 李阳超, 等. 含弱约束结构受限空间油气爆炸外部火焰特性[J]. 后勤工程学院学报, 2016, 32(5): 39-43.
	Wang Shimao, Du Yang, Li Yangchao, et al. External flame characteristics of gasoline-air mixture explosion in confined space with weakly constrained structure[J]. Journal of the Academy of Logistics Engineering, 2016, 32(5): 39-43.
[12]	Nie Zhongheng, Gao Wei, Jiang Haipeng, et al. Explosion quenching characteristics of corrugated plate microchannels in ethanol-gasoline/air mixtures[J]. International Journal of Thermal Sciences, 2024, 204:DOI:10.1016/j.ijthermalsci.2024.109220.
[13]	李国庆, 杜扬, 白洁, 等. 平板障碍物通道形状对油气爆炸传播特性影响[J]. 化工学报, 2020, 71(4): 1912-1921. doi: 10.11949/0438-1157.20191320
	Li Guoqing, Du Yang, Bai Jie, et al. Effects of flat obstacle channel shapes on characteristics of gasoline-air explosion[J]. Journal of Chemical Engineering, 2020, 71(4): 1912-1921.
[14]	Guo Jin, Li Jialin, Tang Zesi, et al. Flame propagation in gasoline vapor-air mixtures with concentration gradient in a closed duct[J]. Fuel, 2020, 270:DOI:10.1016/j.fuel.2020.117508.
[15]	魏树旺, 蒋新生, 徐建楠, 等. 狭长受限空间油气爆炸抑制实验研究[J]. 振动与冲击, 2017, 36(10): 51-56.
	Wei Shuwang, Jiang Xinsheng, Xu Jiannan, et al. Experiment study on the gasoline-air mixture explosion suppression in a long-narrow confined space[J]. Vibration and Shock, 2017, 36(10): 51-56.
[16]	Lyu Pengfei, Gao Xiaopeng, Shen Jing, et al. Effect of liquid water on methane deflagration characteristics in municipal sewage pipeline[J]. Process Safety and Environmental Protection, 2025,202:DOI:10.1016/J.PSEP.2025.107696.
[17]	Zhang Peili, Wang Jian, Wang Dong, et al. Explosions of gasoline vapor/air mixture in closed vessels with different shapes and sizes[J]. Journal of Loss Prevention in the Process Industries, 2018, 57: 327-334. doi: 10.1016/j.jlp.2018.12.010
[18]	Hisken H, Enstad G A, Middha P, et al. Investigation of concentration effects on the flame acceleration in vented channels[J]. Journal of Loss Prevention in the Process Industries, 2015, 36(1): 447-459. doi: 10.1016/j.jlp.2015.04.005
[19]	Wan Saojie, Yu Minggao, Zheng Kai, et al. Effect of side vent size on a methane/air explosion in an end-vented duct containing an obstacle[J]. Experimental Thermal and Fluid Science, 2019, 101: 141-150. doi: 10.1016/j.expthermflusci.2018.10.004
[20]	Wang Hu, Yao Mingfa, Reitz R D. Development of a reduced primary reference fuel mechanism for internal combustion engine combustion simulations[J]. Energy & Fuels, 2013, 27(12): 7843-7853. doi: 10.1021/ef401992e

反应序数	基元反应
R14	C₈H₁₈=·C₄H₉+·C₄H₉
R50	·C₄H₉=·C₃H₆+·CH₃
R158	·C₂H₃+O₂=·CH₂CHO+·O
R165	C₂H₂+·O=·HCCO+·H
R196	·CH₃+·OH=·CH₂OH+·H
R254	·H+O₂=·O+·OH