热气溶胶灭火装置在低温条件下的灭火性能研究

Fire extinguishing performance experimental research on condensed aerosol under low temperature

介绍气溶胶灭火机理,建立了2 m^3小空间和56 m^3大空间灭火试验装置,在-30℃低温环境下利用热气溶胶灭火装置开展了多次模拟火灾灭火试验,测试灭火装置的启动性能、喷射性能和灭火性能,评估热气溶胶灭火装置在极端低温环境下的适应性。选取5种S型气溶胶进行灭火试验,得到灭火过程中的温度变化曲线。试验证明,热气溶胶灭火装置在低温条件下能够正常启动喷放,扩散蔓延特性良好,可以扑灭小空间火灾以及大空间B类可燃物火灾。

The fire extinguishing mechanism of hot aerosol was iw troduced. The 2 m3 small space and 56 m3 large space fire extin-- guishing test devices were established to evaluate the adaptability of the aerosol fire extinguishing device in extreme low temperature environment. The start-up performance, injection performance and fire extinguishing performance of the fire extinguisher were tested by fire extinguishing experiment of aerosol at-30 ℃. Five kinds of S aerosol were used in the fire extinguishment experiments to get the temperature change during the fire suppression. The test results showed that aerosol fire extinguishing device can start and discharge normally under low temperature and can put out small space fire and large space class B fire since it has good diffusion ca- pacity.