Variable pressure type water mist fire extinguishing device

Abstract

The invention discloses a variable pressure type water mist fire extinguishing device which comprises a box body. A high-pressure gas tank is installed in the box body through a clamping device, a fire extinguishing agent storage box and a battery box are installed in the box body, and a high-pressure gas pipe is connected between the input end of the fire extinguishing agent storage box and the output end of the high-pressure gas tank. A first electric shut-off valve and an electric pressure regulating valve are sequentially installed on the pipe section of the high-pressure gas pipe, the output end of the fire extinguishing agent storage box is connected with a main flow pipe through a mixing pipeline, the two ends of the main flow pipe are connected with branch pipes, and variable-pressure nozzle assemblies are installed on the side edges of the branch pipes. An emergency starting device is mounted on the side edge of the box body. The variable pressure type water mist fire extinguishing device saves water greatly, the operation is easy, and the situation that too much space in a compartment is occupied is avoided.

Description

technical field [0001] The invention relates to the technical field of fire safety, in particular to a variable pressure water mist fire extinguishing device. Background technique [0002] Experience shows that when extinguishing an open fire, the use of low pressure and large flow coefficient nozzles can achieve rapid fire extinguishing effect, but the effect of smoke removal and cooling is poor. Due to the high pressure and small droplet diameter of medium and high pressure water mist, it can more fully combine with the smoke and dust in the car. of solid particles. For the traditional passenger cabin fire extinguishing device, because GA1264-2015 stipulates that the continuous spraying time should not be less than 120 seconds, the nozzle with a single flow coefficient should select a relatively large flow coefficient under the premise of ensuring rapid fire extinguishing. In this case, in order to ensure sufficient spraying time , the required fire extinguishing dose is ...

AI Technical Summary

Problems solved by technology

[0002] Experience shows that when extinguishing an open fire, the use of low pressure and large flow coefficient nozzles can achieve rapid fire extinguishing effect, but the effect of smoke removal and cooling is poor. Due to the high pressure and small droplet diameter of medium and high pressure water mist, it can more fully combine with the smoke and dust in the car. of solid particles

For the traditional passenger cabin fire extinguishing device, because GA1264-2015 stipulates that the continuous spraying time should not be less than 120 seconds, the nozzle with a single flow coefficient should select a relatively large flow coefficient under the premise of ensuring rapid fire extinguishing. In this case, in order to ensure sufficient spraying time , the required fire extinguishing dose is often relatively large, followed by the device being too large, occupying the valuable area in the compartment, which cannot meet the technical requirements for compartment fire protection

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