SichuanFine water spray nozzle Chengdu fine water mist system nozzle Fine water mist fire equipment system
Mechanism of fine water mist extinguishing:(1) Cooling: fine water mist droplet diameter is very small, larger than the surface area, easy to vaporize after heat, in the process of gas-liquid phase change from the surface of the combustion material to absorb a large amount of heat, so that the temperature of the fire field plummeted, to achieve the purpose of extinguishing the fire. (2) Asphyxiation: after the fine water mist is sprayed into the fire, the fog droplets vaporize to form the original volume after heating1700Double the water vapor, quickly repel the fire field air, in the burning material around the formation of a barrier to block the entry of fresh air, when the concentration of oxygen in the fire field reduced to the extent that can not be burned, the flame was suffocated extinguished, to achieve the purpose of extinguishing the fire. (3) Barrier radiation heat: after the fine water mist spews into the fire, fine water mist and the formation of water vapor will quickly burn the flame and smoke shrouded, effectively block the flame radiation heat, inhibit the radiation heat ignited other items around, to prevent the spread of the flame.
Meet the water quality requirements of the system by adding stainless steel water tanks and winding filters in front of the regulated pump set, using corrosion-resistant, high-pressure valves, equipment, pipes and accessories, focusing on the welding and connection process of stainless steel seamless tubes, using internal and external filling to protect welding, and in the system flushing, test ingenuity, Commissioning and other links to strengthen control. The normal operation of the high-pressure fine water mist system is ensured.
The principle of extinguishing the fire
Fine water mist is mainly through the role of cooling, suffocation to extinguish the fire, at the same time has the control of heat radiation, washing the air of the auxiliary role.
The key to extinguishing a fine water mist is to reduce the diameter of the droplets to increase the surface area in contact with the surrounding air. The surface area of the same volume of water is atomized into micro-water particles. The increase of surface area makes the fog droplets easier to absorb heat and helps to achieve cooling and extinguishing the fire. The fog droplets after heat absorption are very easy to vaporize, and the volume after vaporization is about1700the concentration of oxygen near the flame is effectively diluted so that the combustion reaction cannot continue. The light weight of the fog drops does not immediately snap to the ground, but as the air flow flies in the air again, increasing the density and uniformity of the droplets in the air. At the same time control thermal radiation, to prevent the spread of fire.