Compressed nitrogen rotation-type foam proportionally-mixed fire extinguishing system

Abstract

The invention discloses a compressed nitrogen rotary foam proportional mixing fire extinguishing system, which relates to the technical field of fire extinguishing systems and mainly consists of a nitrogen cylinder group, a foam mixed liquid tank, a mixer, a control system, a rotary compressed nitrogen foam nozzle and the like. The compressed nitrogen rotary foam proportional mixing fire extinguishing system of the present invention does not need municipal electricity to open the fire fighting system, and has wide applicability, especially suitable for urban tunnel fire extinguishing. The system uses an independent mixer to mix nitrogen and foam liquid without mixing in any pipeline. The mixing is uniform and the mixing time is short. After the mixing is completed, it is sprayed out by each injection device on the pipeline system. There is no need for any suction device on the injection device, which simplifies the overall structure. The compressed nitrogen foam after mixing has strong fire extinguishing ability and time Short, can greatly reduce the combustion temperature of the fire scene, reduce the casualty rate of the fire.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing systems, in particular to a compressed nitrogen rotary foam proportional mixing fire extinguishing system. Background technique [0002] The construction of urban tunnels has effectively improved the city's traffic capacity and relieved urban traffic pressure. However, because the underground space is relatively closed, the traffic flow is large, there are many types of vehicles, and the vehicles themselves are combustible and equipped with storage tanks, the probability and danger of fire accidents are very high. Fire fighting is more difficult than building fires, which may cause Major accident. Most of the water fire-fighting facilities adopt the combination of traditional fire hydrant system, fire extinguisher and fixed aqueous film-forming foam fire-extinguishing system, and the application degree of automation in urban tunnels is low. The traditional foam fire extinguishing syst...

AI Technical Summary

Problems solved by technology

The other is equipped with a fixed foam fire pump station and corresponding pipelines. When extinguishing a fire, the mobile foam generating device (such as a foam gun) is connected to a fixed pipeline through a hose to form a fire extinguishing system. Poor, the mixing of water and foam is not uniform, and foaming needs to be carried out in the atmosphere after spraying, thus reducing the use effect of foam liquid

In addition, the traditional fire water supply method is atmospheric pressure water supply, and the system pressure and fire water consumption cannot be truly exerted on the fire scene, especially some dangerous and explosive vehicles are more difficult to extinguish with water when accidents occur; The scene cannot carry out fire fighting and rescue in time, and it is difficult to extinguish the fire at the first time, resulting in frequent accidents of mass death and mass injury

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