Product Introduction:
Water mist, also known as micro water mist droplets, pressure greater than 10MPa, based on positive displacement pumps, usually using piston pumps, system pressure up to 100-200MPa, water mist fire extinguishing device for safe, economical and efficient purposes, usually pressure of 10-20MPa, water mist refers to the pressure of not less than 10MPa, DV099 100 m of water m.
The water mist not only has the functions of efficient water saving, safe and environmentally friendly fire extinguishing, but also has special functions of smoke reduction, cooling and poison reduction. It can quickly isolate the fire source, effectively degrade and block the smoke and toxic gases at the fire scene, and form an escape channel, which is conducive to personnel evacuation and protection of the life safety of firefighters. The various flexible applications of water mist technology products in different places reflect the trinity of development ideas of "fire extinguishing effect, personal safety and environmental protection".
Product features: 1. Safe and environmentally friendly.
With water as the fire extinguishing agent, it will not decompose and produce harmful substances at high temperatures, and there is no damage to the environment and the protected objects, no pollution, and no impact on peopleIt has a significant washing and scouring effect on the flue gas, reduces the harm caused by the smoke and the toxic gas produced during combustion, improves the visibility of the fire site, and is conducive to the safe evacuation of personnel and the fire extinguishing and rescue of firefighters.
2. Efficient fire extinguishing.
The water mist droplets have a small diameter, a large surface area, and a heat absorption efficiency that is dozens or even hundreds of times that of water spray, which can quickly vaporize near the combustion to form a water vapor isolation layer, and use the cooling and suffocation effect to extinguish the fire: the water mist has penetration, which can solve the problem of full space and occlusion, and effectively prevent the fire from re-ignition.
3. Good electrical insulation.
The diameter of the water mist droplets is small, the diameter is 10 m - 100 m, the fog droplets are discontinuous after spraying, can be suspended in the air for a long time, and it takes a great number and a long time to complete the convergence and condensation of the water mist, so it is difficult to form a conductive continuous water flow or surface water area on the electrode surface, so it has excellent electrical insulation, and can effectively extinguish the fire of live equipment.
4. The loss of saving is small.
The water consumption is about 1% of the water sprinkler, which greatly reduces the volume of the fire water tank (pool) and avoids the secondary disasters caused by a large amount of drainageAnd the impact of the fine droplets on the protected object is small, which greatly reduces the loss of rescue.
Fire extinguishing mechanism: 1. Cooling and thermal radiation barrier.
Due to the small particle size of the droplets, the surface area of the water mist is greatly increased by the same volume of water, and the heat of the flame is absorbed quickly, and the small particle size of the fog droplets is quickly vaporized after the high temperature of the flame, and also absorbs a large amount of heat, so the water mist can make the temperature of the flame decrease rapidly.
2. Oxygen isolation room.
During the gasification process, the volume of the droplets can expand by more than 1,700 times, forming a large amount of water vapor to surround and cover the flame, which greatly reduces the oxygen concentration in the protected area. Therefore, the water mist has a strong gasification cooling effect and oxygen isolation chamber effect.
3. Impact emulsification and dilution.
When extinguishing a fire with a flammable liquid that is insoluble in water, the mist water hits the surface of the liquid and mixes with it, forming a layer of emulsion liquid that interrupts combustion;When extinguishing a fire with a water-soluble liquid, the mist water is mixed with the water-soluble liquid, reducing the concentration of the flammable liquid.
Scope of application: 1. Combustible solid fire in book stacks, archives, cultural relics warehouses and other places;
2. Combustible liquid fire in hydraulic station, oil-immersed power transformer room, lubricating oil warehouse, turbine oil warehouse, Rongyou generator room, oil-fired boiler room, oil-fired direct-fired engine room, oil switch cabinet room, etc
3. Combustible gas jet fire in gas turbine room, gas direct-fired engine room and other places;
4. Electrical equipment fires in power distribution rooms, computer rooms, data processing rooms, communication rooms, control rooms, large cable rooms, cable tunnels (corridors, cable shafts) and other places
5. Fire in engine test room, traffic tunnel and other places suitable for water mist fire extinguishing;
6. Tobacco warehouse and large space warehouse.
Working principle: The water mist fire extinguishing device is maintained at a certain pressure of 08-1.Within 2MPa. When the pressure is lower than the set starting pressure of the stabilizer pump, 0When it is 8MPa, the pressure stabilizing pump is started to make the system pipe network stable at 08-1.In the pressure range of 2MPa, when a fire breaks out in the protected area, the fire detector detects the fire and sends a signal to the fire alarm controller. The fire alarm controller confirms the area where the fire occurs according to the address of the fire detector, and then sends out the control signal of the linkage to start the fire extinguishing system, links the corresponding area valve and the high-pressure main pump, and the water in the system pipeline quickly reaches the working pressure, and sprays out through the high-pressure water mist nozzle to produce a fine water mist to extinguish the fire.
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