压缩空气泡沫灭浮顶罐密封圈火灾性能研究

为了评估压缩空气泡沫系统用于浮顶罐的技术可行性,通过足尺灭火试验,研究不同供给强度和不同气液比下压缩空气泡沫对浮顶罐密封圈火灾的灭火性能,提出适宜的灭火应用参数。结果表明:在泡沫溶液供给强度为3.4〜8.0 L/(min.m2)条件下,采用罐壁式压缩空气泡沫释放装置可以快速有效扑灭浮顶罐密封圈火灾,且不发生复燃;泡沫溶液供给强度越大,控灭火速度越快;气液比在8:1〜12:1时对控灭火速度略有影响。建议实际工程中泡沫溶液供给强度不低于5 L/(min.m2),气液比不低于8:1,持续供泡时间不低于15 min。

A study of fire extinguishing performance of compressedair foam on rim seal fire for floating roof tanks

 In order to evaluate the technical feasibilityof compressed air foam system for the rim seal fire of floating roof tanks, aseries of full-scale fire extinguishing tests under different foam solutionfoam application rates and gas-liquid ratios were conducted to investigate thefire extinguishing performance of compressed air foam, and the suitable fireextinguishing application parameters were put forward.The results indicate thatthe rim seal fire for floating roof tanks was extinguished quickly andeffectively by the rim seal discharge device of compressed air foam under thecondition of the foam solution foam application rate being 3.4~8.0 L/(min·m²),and there was no re-ignition; the higher the foam solution foam applicationrateis, the faster the control and extinguishing speed is; the air/foamsolution volume ratio has a slight effect on the fire control and extinguishingspeed in the range of 8∶1 ~ 12∶1. It is suggested that the foam solution foamapplication rate is not less than 5 L/ (min·m²), the air/foamsolution volume ratio is not less than 8∶1, and the apply duration of compressed air foamis no less than 15min in practical engineering.