地下储库油气爆炸及抑爆机理与技术研究  被引量:12

On the mechanism and technology for explosion suppression in case of fuel-air mixture in below-surface fuel depot

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作  者:蒋新生[1] 杜扬[1] 严欣[1] 薛楠[1] 周琳莉[1] 朱亮[1] 

机构地区:[1]中国人民解放军后勤工程学院军事供油工程系,重庆400016

出  处:《安全与环境学报》2008年第2期134-139,共6页Journal of Safety and Environment

基  金:国家自然科学基金项目(50276069);重庆市自然科学基金项目(cstc;2007BB9096);后勤工程学院"创新人才"工程资助项目

摘  要:针对地下储库受限空间的特点和油气爆炸抑制的需要,在前期所完成的系统油气爆炸试验和理论研究的基础上,采用超细冷气溶胶抑爆新技术,建立地下受限空间油气爆炸及其抑爆模拟试验系统,研制出新型超细冷气溶胶粉体抑爆剂,并对其进行可行性与有效性研究。对地下受限空间油气爆炸抑制的影响因素进行研究,分析了抑爆剂作用机理。结果表明:超细冷气溶胶是一种高效的抑制地下储库油气爆炸的抑爆剂;在相同试验条件下,迎着火焰传播方向喷射抑爆剂的抑爆效果优于垂直火焰传播方向喷射抑爆剂;喷射压力存在临界值,较小较大都不利于油气爆炸抑制,在本文试验条件下,最佳抑爆效果的喷射压力临界值约为0.8MPa;抑爆剂用量不能低于临界抑爆浓度,实验得到的抑爆剂临界浓度为0.232kg/m3;布置方式对抑爆效果具有明显的影响,分散布置比集中布置具有更好的抑爆效果。本文的研究对后续抑爆装置的研制提供了重要的理论参考和关键设计参数。This paper is aimed to report our study findings on the mechanism and technology for explosion suppression in case of fuelair mixture in underground fuel depot as well as the methods for suppression. For our research purpose, we have worked out a complex explosion suppression experimental system to deal with the fuel-air mixture explosion in such depot, together with the development of some kind of super-fine explosion-suppressing powder while analyzing and summarizing the explosion suppression mechanism. From the research we have found that the injection annealing, pressure, explosion suppressant amount and the ways for explosion suppressant arrangement may all have significant influence on the suppression efficiency. From our studies it can be concluded that the super-fine coldaerosol is highly effective in explosion suppression for the fuel-air mixture, what is more, pollution-free with no unfavorable consequences. In addition, the spray mode may have significant effect on the suppression results. Moreover, the head-on spray may also lead to better suppression results than the vertical spray in the same conditions. Furthermore, the pressure of the drive source may also influence the suppression efficiency. Since improper choice of pressure is likely to be disadvantageous for the suppression. Therefore, it is highly recommended here for the users to choose the ideal value of about 0.8 MPa. From what is said above, our study findings on the mechanism and technology for explosion suppression, and the suppressant we have developed, will surely have their own significant reference values to further studies in this area.

关 键 词:爆炸安全工程 油气混合物 地下储库 抑爆 

分 类 号:X932[环境科学与工程—安全科学]

 

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