Efficient two-fluid water mist fire extinguishing device

Abstract

An efficient two-fluid water mist fire extinguishing device comprises an equipment base, a fine water mist spray head connected to the equipment base, a water supply pipe connected to the fine water mist spray head, a pump set connected to the water supply pipe, a water storage barrel connected to the pump set and an air supply device connected to the fine water mist spray head. The air supply device comprises an air storage barrel, a pressure pump connected to the air storage barrel, an air outlet head connected to the water mist spray head and a connecting pipe connected between the air outlet head and the pressure pump; the air outlet head comprises a fixed base, a rotating base and a rotating motor used for driving the rotating base to rotate, the fixed base is fixedly connected to the water mist spray head, the fixed base, the rotating base and the water mist spray head are coaxially arranged, an air inlet is formed in the top of the fixed base, one end of the connecting pipe is fixedly connected to the air inlet, an air spraying opening is formed in the rotating base, a sealing ring is arranged between the rotating base and the fixed base, and the interiors of the rotating base and the fixed base are hollowed out.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing devices, in particular to a two-fluid fine water mist high-efficiency fire extinguishing device. Background technique [0002] As a new alternative technology, the water mist fire extinguisher has shown very superior characteristics, which has attracted extensive attention from the international fire protection community. The fire area absorbs a large amount of heat. Experiments show that the greater the heat absorption per unit area of ​​water mist, the faster the droplet velocity, the smaller the diameter, and the higher the heat transfer rate. The volume expands rapidly by 1700 to 5800 times, reducing the oxygen volume fraction and forming a barrier around the combustion to block the inhalation of fresh air. With the rapid vaporization of water, the water vapor content will increase rapidly, and at the same time, when the oxygen content decreases to 16% to 18% in the space around th...

AI Technical Summary

Problems solved by technology

In addition, the mist droplets in the non-combustion area outside the fire site will not vaporize, the oxygen content in the air will not change, and will not endanger the lives of personnel. Although the water mist fire extinguisher consumes less water and has a higher utilization rate of water resources than fire-fighting equipment such as fire cannons, but It is still inconvenient to adjust the fire extinguishing direction, and the size of the water mist range cannot be adjusted, which will still cause a lot of waste of water resources and low fire extinguishing efficiency

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