A dual-fluid water mist high-efficiency fire extinguishing device

Abstract

A two-fluid fine water mist high-efficiency fire extinguishing device, comprising an equipment base, a fine water mist nozzle connected to the equipment base, a water supply pipe connected to the fine water mist nozzle, a pump set connected to the water supply pipe, a pump set connected to the pump set A water storage tank, an air supply device connected to the fine water mist nozzle, the gas supply device includes an air storage tank, a pressure pump connected to the air storage tank, an air outlet head connected to the fine water mist nozzle, an air outlet head and a pressure pump The connecting pipe between them, the air outlet head includes a fixed base, a rotating base and a rotating motor for driving the rotating base to rotate, the fixed base is fixedly connected to the fine water mist nozzle, the fixed base, the rotating base The seat and the fine water mist nozzle are coaxially arranged, the top of the fixed base is provided with an air inlet, one end of the connecting pipe is fixedly connected to the air inlet, the rotating base is provided with an air outlet, and the rotating base A sealing ring is provided between the seat and the fixed base, and both 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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