Multi-mode water mist fire extinguishing system

Abstract

The invention provides a multi-mode water mist fire extinguishing system which comprises a water pump machine set, a water transporting pipeline set formed by a high-pressure water band and a spray gun with various spraying modes, wherein a multi-mode water mist spray head set of the spray gun is sequentially provided with a three-way change-over valve, a rear spray head, a front spray head and a direct-flow foam spray pipe from back to front along the axial water charging direction. The total four spraying modes including the direct-flow foam spraying status and the waster mist spraying status can be realized, wherein the waster mist spraying status comprises an axial spraying mode, a radial spraying mode and an axial/ radial spraying mode. The radiation heat can be greatly isolated, the smoke can be removed, the radiation thermal damage can be reduced, the smoke damage can be reduced, the fire extinguishing effect can be improved, and the risk can be reduced; and the spraying distance can not be influenced, so that the fire extinguishing efficiency and the safety can be greatly improved. A quick joint of the high-pressure water band of the system is compact in structure, small in volume, light in weight, high pressure-resistant, and interchangeable, so that the system is light, handy, flexible and convenient to use, clean and neat, thereby being suitable for the pipeline which needs to be usually disassembled and assembled in need particularly.

Description

technical field [0001] The invention belongs to the field of fire-fighting equipment and relates to a multi-mode fine water mist fire extinguishing system, especially a multi-mode spray gun and a high-pressure hose quick connector used in the system. Background technique [0002] Fixed or mobile fire extinguishing system is mainly composed of water pump unit, water delivery pipeline group (including high-pressure water belt) and spray gun. Among them, most of the spraying modes of the spray guns only have one mode in the direct-flow foam mode or the water mist spraying mode, and some spray guns have two modes. , mentioned a spray gun that can realize two spray modes, which can realize the conversion of the two modes of fine water mist and direct-flow foam spray. Carrying a spray gun can deal with the needs of water mist spray and direct-flow foam spray. It improves the fire extinguishing efficiency and saves water consumption, which can effectively reduce the "secondary dis...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual use of the spray gun, some shortcomings were also found: the spray angle and spray distance of the fine water mist mode cannot be adjusted according to the fire scene, although the coverage is larger than that of the direct-flow foam spray mode, and it can isolate a certain range of radiation It is hot, but in order to ensure the spray distance, the spray angle of this mode cannot be very large, the maximum angle is about 30°, and a large part of the heat radiation received by the firefighters in front is still not isolated

However, the connection method and structure between the joint and the hose are easy to cause damage to the hose itself, and it is easy to separate the joint from the hose or damage the hose under high pressure.

At present, there is no quick-connect connector specially used for high-pressure water belt buckles above 2.5Mpa in China.

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