AFFF 对航空煤油油池火的抑灭有效性研究

Study on effectiveness of aqueous film forming foam extinguishing agent on suppression of aviation kerosene pool fires

按照国家标准灭火试验的要求,采用不同的泡沫喷射率对不同尺寸航空煤油油池火开展了灭火效果试验,分析油盘尺寸、泡沫喷射率对灭火效果的影响,验证固定喷射率条件下,能够扑救的最大尺寸的油盘。结果表明:当油盘面积为0.8 m^2时,泡沫喷射率为2.9 L/min时的灭火时间比为1.3 L/min时缩短近60 s;当泡沫喷射率为1.3 L/min时,最大可控制1.0 m^2航空煤油油池火的90%燃烧,未能将其完全扑灭;当泡沫喷射率为2.9 L/min时,可完全扑灭2.0 m^2及其以下的航空煤油油池火。

According to the national standard of fire extinguishing experiment,different foam injection rates were used to carry out fire extinguishing experiments on different sizes of aviation kerosene pool fire.The influence of oil pan size and foam spray rate on fire extinguishing effect was studied,and the largest oil pan size can be put out under the fixed spray rate was furtherly verified.The experimental results showed that when the area of oil pan is 0.8 m^2,the extinguishing time is about 60 s shorter when the spray rate is 2.9 L/min than that when the spray rate is 1.3 L/min.When the foam injection rate was 1.3 L/min,90%of the aviation kerosene pool fire with the area of 1.0 m^2 could be controlled,but the fire could not be extinguished completely.When the foam injection rate is 2.9 L/min,pool fire not bigger than 2.0 m^2 can be put out completely.