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

doi:10.16085/j.issn.1000-6613.2017-2522

化工进展 ›› 2018, Vol. 37 ›› Issue (07): 2557-2564.DOI: 10.16085/j.issn.1000-6613.2017-2522

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

杜扬, 李蒙, 李国庆, 王世茂, 张培理, 齐圣, 韦世豪

陆军勤务学院油料系, 重庆 401311

收稿日期:2017-12-06 修回日期:2018-04-01 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 李蒙,硕士研究生,从事油气安全与防护技术研究。
作者简介:杜扬(1958-),男,教授,博士生导师。E-mail:duyang58@163.com
基金资助:
国家自然科学基金（51276195）及重庆市研究生科研创新项目（CYB17150）。

Effects of bilateral branches structure on characteristics of gasoline-air mixtures explosion overpressure and flame behavior in a semi-confined space

DU Yang, LI Meng, LI Guoqing, WANG Shimao, ZHANG Peili, QI Sheng, WEI Shihao

Army Logistics University of PLA, Chongqing 401311, China

Received:2017-12-06 Revised:2018-04-01 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 为研究含有双侧分支结构受限空间内油气泄压爆炸超压和火焰演变特性，进行了不同初始油气体积分数工况下含有双侧分支结构受限空间和长直受限空间内的对比实验。研究结果表明： ①爆炸超压曲线会出现3个典型的超压峰值p₁、p₂、p_max，其中p₁的形成与管道开口端密封材料瞬时破裂有关，p₂与分支结构泄压有关，而p_max受管道内部爆炸强度与火焰加速协同效应影响。②分支结构对爆炸超压有强化作用，当油气体积分数在1%～2%区间，爆炸超压强化程度先增强后减小，且在1.4%～1.8%之间最为强烈。③火焰在分支结构处发生显著的弯曲、褶皱变形，这增大了火焰面积，提高了燃烧速率，加速了流场的传热传质效率，诱导爆炸强度的急剧增大，同时提高了火焰传播速度并增大了最大火焰锋面位置。④火焰在含有双侧分支结构的管道内呈现“半球形火焰——指尖形火焰——平面状火焰——浪花状火焰”形态变化。

关键词: 油气爆炸, 爆炸超压, 火焰速度, 分支结构, 混合物

Abstract: In order to investigate the overpressure characteristics and flame behavior of gasoline-air mixtures explosion in a semi-confined space with double side branches structure, the explosion overpressure peaks in straight and bilateral branches pipes under different initial gasoline-air mixtures concentrations were studied. Semi-open plexiglass pipes were used to visualize the flame propagation behavior. Results showed that:①there existed three typical pressure peaks denoted as p₁、p₂ and p_max during the gasoline-air mixture explosions in the semi-open pipe and the magnitude of p₁ was just associated with the fracture constant of the polyethylene film at the pipe exit and p₂ was related to branch pipe pressure relief while p_max was affected by the intensity of explosion inside the pipe and flame acceleration. ②The branch pipe has an intensive effect on the explosion strength. With the increase of gasoline-air mixtures concentration, the strengthening effect firstly increases and then decreases, and the strengthening effect is most intense at the concentration of 1.4% to 1.8%. ③The flame occurs at the branch structure with significant bending and folding, which increases the flame area, increases the combustion rate, accelerates the heat transfer efficiency of the flow field, induces the sharp increase of explosion intensity, and at the same time, the flame propagation speed and the maximum flame front position are increased. ④The flame presents a "hemispherical flame——fingertip flame——planar flame——spray flame" morphology changes in the pipe containing the bilateral branch structure.

Key words: gasoline-air explosions, explosion overpressure, flame speed, branch structure, mixtures

中图分类号:

X932

杜扬, 李蒙, 李国庆, 王世茂, 张培理, 齐圣, 韦世豪. 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(07): 2557-2564.

DU Yang, LI Meng, LI Guoqing, WANG Shimao, ZHANG Peili, QI Sheng, WEI Shihao. Effects of bilateral branches structure on characteristics of gasoline-air mixtures explosion overpressure and flame behavior in a semi-confined space[J]. Chemical Industry and Engineering Progress, 2018, 37(07): 2557-2564.

参考文献

[1] 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.
[2] 尉存娟,谭迎新,张建忠,等. 不同间距障碍物下瓦斯爆炸特性的实验研究[J]. 中北大学学报(自然科学版), 2015(2):188-190. YU Cunjuan, TAN Yingxin, ZHANG Jianzhong, et al. Experiment research on blast characters of methane under obstacle with different distance[J]. Jounal of North University of China(Natural Science Edition), 2015(2):188-190.
[3] LI G, DU Y, QI S, et al. Explosions of gasoline air mixtures in a closed pipe containing a T-shaped branch structure[J].Journal of Loss Prevention in the Process Industries, 2016, 43:529-536.
[4] YU M, ZHENG K, CHU T. Gas explosion flame propagation over various hollow-square obstacles[J]. Journal of Natural Gas Science and Engineering, 2016, 30:221-227.
[5] YANG D, LI Z P, HONG O Y. Effects of humidity, temperature and slow oxidation reactions on the occurrence of gasoline-air explosions[J]. Journal of Fire Protection Engineering, 2013, 23(3):226-238.
[6] AJRASH M J,ZANGANEH J,MOGHTADERI B. Effects of ignition energy on fire and explosion characteristics of dilute hybrid fuel in ventilation air methane[J]. Journal of Loss Prevention in the Process Industries, 2016, 40:207-216.
[7] QI S, DU Y, WANG S, et al. The effect of vent size and concentration in vented gasoline-air explosions[J].Journal of Loss Prevention in the Process Industries, 2016, 44:88-94.
[8] BAUWENS C R, DOROFEEV S B. Effect of initial turbulence on vented explosion overpressures from lean hydrogen-air deflagrations[J]. International Journal of Hydrogen Energy, 2014, 39(35):20509-20515.
[9] GUO J, SUN X, RUI S, et al. Effect of ignition position on vented hydrogen-air explosions[J]. International Journal of Hydrogen Energy, 2015, 40(45):15780-15788.
[10] CHAO J, BAUWENS C R, DOROFEEV S B. An analysis of peak overpressures in vented gaseous explosions[J]. Proceedings of the Combustion Institute, 2011, 33(2):2367-2374.
[11] 王汉良,周凯元,杨志,等. 气体爆轰波在管道中绕射和反射的实验研究[J]. 火灾科学, 2005, 14(3):177-181. WANG Hanliang, ZHOU Kaiyuan, YANG Zhi, et al. Experimental study of diffraction and reflection of gaseous detonation wave in the tube[J]. Fire Safety Science, 2005, 14(3):177-181.
[12] 顾金龙,翟成. 爆炸性气体在连续拐弯管道中传播特性的实验研究[J]. 火灾科学, 2011, 20(1):16-20. GU Jinlong, ZHAI Cheng. Gas explosion propagation characteristics in continuous turning pipe[J]. Fire Safety Science, 2011, 20(1):16-20.
[13] 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. Propagation rule of methane explosion in bifurcation duct[J]. Journal of China Coal Society, 2008, 33(2):136-139.
[14] TOMLIN G, JOHNSON D M, CRONIN P, et al. The effect of vent size and congestion in large-scale vented natural gas/air explosions[J]. Journal of Loss Prevention in the Process Industries, 2015, 35:169-181.
[15] LI Guoqing, DU Yang, QI Sheng, et al. Explosions of gasoline-air mixtures in a closed pipe containing a T-shaped branch structure[J]. Journal of Loss Prevention in the Process Industries, 2016, 43:529-536.
[16] FAKANDU B M, ANDREWS G E, PHYLAKTOU H N. Vent burst pressure effects on vented gas explosion reduced pressure[J]. Journal of Loss Prevention in the Process Industries, 2015, 36:429-438.
[17] CHOW S K, CLEAVER R P, FAIRWEATHER M, et al. An experimental study of vented explosions in a 3:1 aspect ratio cylindrical vessel[J]. Process Safety & Environmental Protection, 2000, 78(6):425-433.
[18] 温小萍,武建军,解茂昭. 瓦斯爆炸火焰结构与压力波的耦合规律[J]. 化工学报, 2013, 64(10):3871-3877. WEN Xiaoping, WU Jianjun, XIE Maozhao. Coupled relationship between flame structure and pressure wave of gas explosion[J]. CIESC Journal, 2013, 64(10):3871-3877.
[19] WEN X P, YU M G, JI W T, et al. Methane-air explosion characteristics with different obstacle configurations[J]. International Journal of Mining Science and Technology, 2015, 25(2):213-218.
[20] 王世茂,杜扬,李国庆,等. 局部开口受限空间油气爆燃的超压瞬变与火焰行为[J]. 化工学报, 2017, 68(8):3310-3318. WANG Shimao, DU Yang, LI Guoqing, et al. Overpressure transients and flame behaviors of gasoline-air mixture deflagration in confined space with local opening[J]. CIESC Journal,2017,68(8):3310-3318.
[21] BLANCHARD R, ARNDT D, GRÄTZ R, et al. Explosions in closed pipes containing baffles and 90 degree bends[J]. Journal of Loss Prevention in the Process Industries, 2010, 23(2):253-259.
[22] YAN X Q, YU J L. Overpressure characteristics of aluminum dust explosion vented through a relief pipe[J]. Journal of Loss Prevention in the Process Industries, 2013, 26(4):676-682.
[23] 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.
[24] WEN X P, YU M G, JI W T, et al. Methane-air explosion characteristics with different obstacle configurations[J]. International Journal of Mining Science and Technology, 2015, 25(2):213-218.

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

Effects of bilateral branches structure on characteristics of gasoline-air mixtures explosion overpressure and flame behavior in a semi-confined space

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