Experimental study on effect of large-scale explosion venting component on interior deglagration pressure

SUN Song; WANG Mingyang; GAO Kanghua; ZHAO Tianhui; GUO Qiang

doi:10.11883/bzycj-2016-0211

Volume 38 Issue 2

Jan. 2018

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SUN Song, WANG Mingyang, GAO Kanghua, ZHAO Tianhui, GUO Qiang. Experimental study on effect of large-scale explosion venting component on interior deglagration pressure[J]. Explosion And Shock Waves, 2018, 38(2): 359-366. doi: 10.11883/bzycj-2016-0211

Citation:

SUN Song, WANG Mingyang, GAO Kanghua, ZHAO Tianhui, GUO Qiang. Experimental study on effect of large-scale explosion venting component on interior deglagration pressure[J]. Explosion And Shock Waves, 2018, 38(2): 359-366. doi: 10.11883/bzycj-2016-0211

Citation:

SUN Song, WANG Mingyang, GAO Kanghua, ZHAO Tianhui, GUO Qiang. Experimental study on effect of large-scale explosion venting component on interior deglagration pressure[J]. Explosion And Shock Waves, 2018, 38(2): 359-366. doi: 10.11883/bzycj-2016-0211

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Experimental study on effect of large-scale explosion venting component on interior deglagration pressure

doi: 10.11883/bzycj-2016-0211

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China

Received Date: 2016-07-14
Rev Recd Date: 2016-12-20
Publish Date: 2018-03-25

Abstract

Abstract

The effect of the large-scale explosion venting component on the interior deflagration pressure at different volume fractions of ethylene was studied by installing a vent panel on the end of the cavity whose size is 2 m×1.2 m×0.6 m. Two vent panels with different vent static-pressures were selected to be tested under the ethylene volume fraction ranging from 4% to 11% and three typical pressure-time curves were obtained. The result shows that the actual breakdown-pressure of the vent component was larger than that under a static load and there existed a maximum breakdown-pressure under the optimum concentration. The opening duration of the vent component had an important impact on the cavity interior pressure and it was as much as up to several tens of milliseconds at low-concentration. However, the opening duration was only a few milliseconds at stoichiometric concentration and the Lee JHS model still has good applicability for a rectangular cavity with a large-scale venting component. When the ethylene volume fraction is high, the large-scale venting component would cause the outside air to pour into the cavity and react with unburned gas as a result of having an overly large relief area, thereby leading to a secondary explosion, so increasing the relief area would bring damage to the structure under a high volume fraction.
- gas explosion,
- large-scale venting component,
- ethylene,
- deflagration pressure

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References(15)

References

[1]	MOLKOV V, DOBASHI R, SUZUKI M, et al. Modeling of vented hydrogen-air deflagrations and correlations for vent sizing[J]. Journal of Loss Prevention in the Process Industries, 1999, 12(2):147-156. doi: 10.1016/S0950-4230(98)00049-7
[2]	SUSTEK J, JANOVSKY B. Comparison of empirical and semi-empirical equations for vented gas explosion with experimental data[J]. Journal of Loss Prevention in the Process Industries, 2013, 26(6):1549-1557. doi: 10.1016/j.jlp.2013.08.014
[3]	SHEARER M J, TAM V H Y, CORR B. Analysis of results from large scale hydrocarbon gas explosion[J]. Journal of Loss Prevention in the Process Indestries, 2000, 13(2):167-173. doi: 10.1016/S0950-4230(99)00020-0
[4]	HAN Yongli, CHEN Longzhu. Mechanical model of domestic gas explosion load[J]. Transactions of Tianjin University, 2008, 14(6):434-440. doi: 10.1007/s12209-008-0075-x
[5]	COOPER M G, FAIRWEATHER M, TITE J P. On the mechanisms of pressure generation in vented explosions[J]. Combustion and Flame, 1986, 65(1):1-14. https://www.sciencedirect.com/science/article/pii/0010218086900672
[6]	胡俊, 浦以康, 万士昕.柱形容器开口泄爆过程中压力发展特性的实验研究[J].爆炸与冲击, 2001, 21(1):47-52. https://www.researchgate.net/publication/285143235_Experimental_investigations_of_pressure_development_during_explosion_vent_from_cylindrical_vessels HU Jun, PU Yikang, WAN Shixin. Experimental investigations of pressure development during explosion vent from cylindrical vessels[J]. Explosion and Shock Waves, 2001, 21(1):47-52. https://www.researchgate.net/publication/285143235_Experimental_investigations_of_pressure_development_during_explosion_vent_from_cylindrical_vessels
[7]	BAO Qi, FANG Qin, ZHANG Yadong, et al. Effects of gas concentration and venting pressure on overpressure transients during vented explosion of methane-air mixtures[J]. Fuel, 2016, 175:40-48. doi: 10.1016/j.fuel.2016.01.084
[8]	MOEN I O, LEE J H S, HJERTAGER B H, et al. Pressure develpoment due to turbulent flame propagation in large-scale methane-air explosions[J]. Combustion and Flame, 1982, 47(82):31-52. https://www.sciencedirect.com/science/article/pii/0010218082900876
[9]	BAUWENS C R, CHAFFEE J, DOROFEEV S B. Vented explosion overpressures from combustion of hydrogen and hydrocarbon mixtures[J]. International Journal of Hydrogen Energy, 2011, 36(3):2329-2336. doi: 10.1016/j.ijhydene.2010.04.005
[10]	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]. Institution of Chemical Engineers, 2000, 78(6):425-433. https://www.sciencedirect.com/science/article/pii/S0957582000709098
[11]	赵衡阳.气体和粉尘爆炸原理[M].北京:北京理工大学出版社, 1996:208-214.
[12]	毕明树.气体和粉尘爆炸防治工程学[M].北京:化学工业出版社, 2012:129-131.
[13]	孙敖. 建筑物内可燃气体爆炸泄放研究[D]. 南京: 解放军理工大学, 2013.
[14]	PAOLO C, ROTA R, CARR S, et al. Vented gas deflagration: A detailed mathematical model tuned on a large set of experimental data[J]. Combustion and Flame, 1990, 80(1):49-64. doi: 10.1016/0010-2180(90)90051-R
[15]	张奇, 白春华, 梁慧敏.燃烧与爆炸基础[M].北京:北京理工大学出版社, 2007:41-42.