高倍泡沫扑救LNG池火实验研究∗

摘要

LNG in the pool fire burning mechanism and high-expansion foam suppression effectiveness for pool fire by using camera, thermal imaging, thermocouple tree, heat flow meter and other instrument through large-scale fire test platform were discussed. The results showed that high-expansion foam had better suppression effectiveness for the LNG pool fire, significantly reduced the heat radiation hazard of LNG pool fire on the surrounding structures. But high-expansion can’t completely put out the LNG pool fire with a little greater 7. 2 L/m2 ·min supply intensity.%搭建了大尺度LNG池火测试实验平台，应用摄像、热成像、热电偶树、热流计等仪器开展了LNG在池火燃烧机理及高倍泡沫对池火灾抑制作用的实验研究。结果表明高倍泡沫对LNG池火有较好的抑制作用，显著的降低LNG池火对周边构建筑物的热辐射危害，但以高倍泡沫灭火系统设计规范规定的略大于7．2 L/m2·min供给强度下，高倍泡沫无法扑灭LNG池火。