富氧舱室环境火灾特性模拟  

Simulation research on fire characteristic in oxygen enrichment cabin

作　　者：伞兵[1] 浦金云[1] 李营[1] 李达 SAN Bing;PU Jin-yun;LI Ying;LI Da(College of Power Engineer,Naval Univ,of Engineering,Hubei Wuhan 430033,China;Unit NO. 92763,Liaoning Dalian116041,China)

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033 [2]93763部队,辽宁大连116041

出　　处：《消防科学与技术》2019年第5期611-615,共5页Fire Science and Technology

摘　　要：针对现代舰船通常装备供氧系统的现实情况,选取舱室中普遍使用的聚氯乙烯材料作为舱室固体可燃物的代表,开展氧气泄漏造成的富氧环境对舱室火灾特性影响的FDS仿真研究。设计舱室火灾系列实验和细水雾灭火效能系列实验,分析PVC火源的热释放速率、舱室温度、烟气能见度以及细水雾对火灾抑制作用,并提出这些变化是氧气浓度增加、氧气的冷却作用和舱室压力上升共同作用的结果。Against the situation that modern warships are usually equipped with oxygen supply system,taking polyvinyl chloride(PVC) material which is applied extensively in warship cabin as the represented solid combustible,the paper carried on FDS simulation on how oxygen enriched environment caused by oxygen leakage affects the cabin fire characteristic.The cabin fire experiments and water mist fire extinguishing effect experiments were carried out,to investigated the PVC fire source’s HRR,cabin temperature,soot visibility and the suppression efficiency of water mist.It was indicated that the increment of oxygen concentration,leaking oxygen’s cooling effect,together with the rise of cabin pressure cause the variation mentioned above.

关 键 词：富氧环境 聚氯乙烯 细水雾 火灾特性 数值模拟 

分 类 号：X932[环境科学与工程—安全科学] U663.9[交通运输工程—船舶及航道工程]