Research Into High Pressure Water Mist Fire-Extinguishing System On Vehicle

Nowadays, at the stage of all kinds of disasters and accidents, fire accident is the one of the main disasters occurred in the highest rate which threats public safety and influences the development of our society. With the changing of people's lifestyle, social structure and the development of our economic, there will be more fire accidents. At the same time, according to the concept of sustainable development of our society, environmental problems have attracted more attentions. In recent years, the Halon substitute products of water mist fire extinguishing system obtained rapid development. High pressure water mist fire extinguishing system has the advantages of safety, high efficiency, environmental protection and other advantages, and it will be one of the important fire extinguishing techniques.The traditional vehicle fire extinguishing system mainly used DC water, dry powder and foam as the extinguishing agent, and the fire tanker as the main fire fighting vehicle. Although we mainly use the multifunctional fire water branch, it has many shortcoming, such as large water consumption, low efficiency, poor continuous operation, hard to control, especially suppressing the fires which have precision instruments, and it's difficulty to suppressing the class B, E fires, more difficulties will appear when the fire happened in the water shortage area. Therefore, it's the inevitable trend of the current situation to study the vehicle of high pressure water mist fire extinguishing system which has the quality of efficiency and environmentally friendly.Based on the theoretical research and practical experiments of fire extinguishing, the paper studied the vehicle of high pressure water mist fire extinguishing system including application status and analyzed the advantage of the system, then the paper discussed the water mist generating mechanism, the extinguishing mechanism, and the vehicle of high pressure water mist fire extinguishing mechanism, and cited jet theory, the (high pressure)water mist nozzle design characteristic elements. The experimental platform of high pressure water mist fire-extinguishing system on vehicle was builded by the author, and the new hand-held multifunctional vehicle-mounted high-pressure water mist spray gun experiments was also conducted by the author.