大型罐区构建大流量液氮泡沫系统的探讨

Study of large-flow liquefied nitrogen-foam fire fighting system for large-scale tank farms

针对我国大型浮顶储罐的发展趋势,指出移动式大流量消防炮与远程供水系统是国外处置大型储罐全面积火灾的主要方式。研究了固定式和移动式液氮泡沫灭火系统在我国大型罐区的应用方式,根据液氮泡沫在全尺寸油盘上的喷射与灭火试验结果,指出在罐顶集中布置泡沫喷射器有利于全面积火灾扑救。考虑到我国大型储罐的分布特点和数量,移动式大流量液氮泡沫灭火系统与储罐半固定式泡沫喷射系统结合是最适合于我国应对大型储罐全面积火灾的方式。

As for the developing trend of large-scale floating roof tanks in China,the mobile large-flow fire monitor combined with remote water supply system is the main way to deal with full surface fires outside of China.The fixed and mobile liquefied nitrogen foam system have been studied for Chinese oil depots.According to results of the compressed air foam spraying and firefighting tests on large-scale oil pan,the foam spraying pipes fixed at one site on top of tank shell is better for extinguishment of full surface fire than for other means.The combination of mobile large-flow liquefied nitrogen foam system and semi-fixed foam spraying pipes on floating roof tanks is suitable for extinguishment of full surface fires,considering the distribution and amount of floating roof tanks in China.