液态燃料爆炸极限及其惰化抑制实验研究

Experimental Study on Explosion Limits and Suppression of Combustible Liquid

采用自行设计的一套可燃液体爆炸极限试验装置,对RP-5油料、RP-3油料及工业酒精的爆炸极限及1301、二氧化碳、氮气等惰化介质对这三种燃料惰性化抑制作用特性进行了实验研究。结果表明,RP-5油料、RP-3油料及工业酒精的爆炸极限浓度分别为1.53%～7.73%、0.82%～7.17%及3.38%～18.25%;1301对RP-5油料、RP-3油料及工业酒精的最小惰化抑制浓度分别为6.75%、6.8%及5.56%;二氧化碳和氮气对RP-3油料的最小惰化抑制浓度分别为45%和49%。根据实验结果分析,得出1301对油料爆炸惰化抑制效果明显优于二氧化碳与氮气。

The explosion limits and the least suppression explosion concentrations of RP-5 oil,RP-3 oil and alcohol air mixtures were measured respectively by use of the apparatus,which was designed for measuring explosion limit of combustible liquid vapor.Results indicate the explosion limits of RP-5 oil,RP-3 oil and alcohol air mixtures are 1.53%~7.73%（vol.）,0.82%~7.17%（vol.） and 3.38%~18.25%（vol.） respectively;the least suppression explosion concentrations of the 1301 inert gas are 6.75%,6.8% and 5.56% respectively for the RP-5 oil,RP-3 oil and alcohol air mixtures.The least suppression explosion concentrations of N2 and CO2 are 49% and 45% respectively for the RP-3 oil air mixtures.So the suppression effect of the 1301 inert gas is better than that of the CO2 and the N2.