Experiment Study on Gasoline-Air Mixture Explosion Suppression in Long-Narrow Confined Space

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (10) : 51-56.

Wei Shu-wang, Jiang Xin-sheng, Xu Jian-nan, He Biao, Qi Sheng , Wang Shi-mao

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Abstract

In order to study the effect of gaseous explosion suppressant on gasoline⁃air mixture explosion, an experiment system of gasoline⁃air mixture explosion suppression in long-narrow confined space was set up. Carbon dioxide and heptafluoropropane(FM200) were chosen as explosion suppressant. The gasoline⁃air mixture explosion suppression experiment was systematically conducted and was compared with experiment under no explosion suppressant condition. The changes of overpressure, rate of pressure rise, flame propagation velocity, flame intensity and explosive products were analyzed. Experiment results indicate that when carbon dioxide and FM200 were chosen as explosion suppressant, the maximum overpressure declined by 28.85% and 42.54%; The maximum rate of pressure rise decreased by 11.62% and 16.04%. The flame propagation velocity declined by 60.69% and 89.23% respectively. Meanwhile, flame duration was shortened and flame intensity was weakened. When all other conditions remained stable, the explosion suppression effect of FM200 was better than that of carbon dioxide.

Key words

gasoline?air mixture explosion / simulation experiment / explosion suppressant；active explosion suppression

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Wei Shu-wang, Jiang Xin-sheng, Xu Jian-nan, He Biao, Qi Sheng,Wang Shi-mao. Experiment Study on Gasoline-Air Mixture Explosion Suppression in Long-Narrow Confined Space[J]. Journal of Vibration and Shock, 2017, 36(10): 51-56

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