How to achieve fire extinguishing effect with high-pressure water mist sprinkler?

In the process of fire fighting, the fire high-pressure water mist sprinkler uses the method of blocking radiant heat. The water mist sprayed by the fire high-pressure water mist nozzle quickly covers the flame and smoke plume of combustibles through the steam after evaporation. Using this method can have a good blocking effect on the flame radiation!

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The most important role of high-pressure water mist sprinkler for fire fighting is to effectively restrain radiant heat from igniting other objects around while extinguishing fire, so as to prevent flame spread, which will greatly reduce potential safety hazards. Another feature of the fire high-pressure water mist nozzle is that when the water mist is sprayed into the fire site, it quickly evaporates to form steam, which expands rapidly through the product to exhaust the air. In this case, a barrier will be formed around the combustion area or combustibles to prevent the entry of fresh air, and then the oxygen concentration in the combustion area can be reduced, making the fire oxygen deficient.

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The most important thing that can not be ignored is the cooling effect of high-pressure water mist sprinkler. Under normal circumstances, the surface area of the fog droplets sprayed by the fire high-pressure water mist nozzle is larger than that of ordinary water spray, and the fog droplets are less than 400 μ m. In this way, it can volatilize completely in the fire field, absorb a lot of heat, and cause the combustion to become slow.
For the water reservoir in the fire extinguishing system equipment of the high-pressure water mist sprinkler, the water here should be replaced regularly, so as to avoid the biological growth and blockage of the nozzle after the water is stored for a long time. The fire extinguishing system for high-pressure water mist sprinkler shall be stored in the special equipment room with ambient temperature of 4-50 ℃. Avoid freezing the water if the temperature is too low. Similarly, too high temperature will also cause the water temperature in the tank to rise, resulting in gasification or heat exchange, and possibly scale or breeding organisms, thus affecting the water quality.


Post time: Oct-13-2022