Fire extinguishing by explosive water mists is a new method with high efficiency and rapid fire-extinguishing performance.In order to study the process of explosive water mists acting on oil fire,a CCD camera,a fine thermocouple and an infrared thermometer were used to capture the images of fire extinguishing by explosive water mists and the temperature variation during extinguishing process.The experimental results show that the temperature drops sharply while the explosive water mists impact on the oil-fire surface,and the fall time is in accord with the fire extinguishing duration from CCD images.Also,when the water bag is placed 1.0 m above the oil pan with 3 kg water and 2.02 g explosive,the extinguishing duration time is about 200 ms.A fine thermocouple can be used as an accurate measuring device to represent the temperature variation of the extinguishing process,while an infrared thermometer is a good auxiliary means to qualitatively investigate the temperature change of extinguishing process.%爆炸水雾灭火是一种高效、快捷的新型灭火方式。为了研究爆炸水雾与油火的作用过程，采用 CCD 摄像机、微细热电偶、红外测温仪3种测试手段，获得了爆炸水雾与油火作用的图像以及灭火过程中温度的变化情况。实验结果表明：爆炸水雾在冲击油面后温度发生了突降，温度突降时间与 CCD 记录的水雾扑灭明火的时间一致；当水袋位于油盘正上方1．0 m、炸药量为2．02 g、水量为3 kg 时，灭火持续时间约为200 ms；微细热电偶能够较准确地反映爆炸水雾灭火过程的温度变化，而红外测温仪可作为辅助测温手段定性分析灭火过程中的温度变化。
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