Dry powder injection system and fire fighting truck

Abstract

The invention belongs to the firefighting field, and particularly relates to a dry powder injection system and a fire fighting truck. The dry powder injection system comprises a dry powder fluidization tank, a high-pressure gas source, a dry powder injection device and a blowing-assisting device, wherein the high-pressure gas source can communicate with the dry powder fluidization tank in a pressure-adjustable mode; the dry powder injection device communicates with the dry powder fluidization tank for injecting dry powder gas flow subjected to fluidization treatment; and the blowing-assistingdevice can guide blowing-assisting gas flow with set pressure to the dry powder injection device, so that set injection pressure which meets the requirements of the dry powder injection device is met.Based on the technical scheme, the embodiment of the invention at least can solve the problem that blowing-feeding pressure of jacking a dry powder fire extinguishing system of the fire fighting truck is insufficient.

Description

technical field [0001] The invention relates to the field of fire protection, in particular to a dry powder injection system and a fire truck. Background technique [0002] With the development of cities and the gathering of urban population, high-rise firefighting, large-scale building firefighting and petrochemical equipment firefighting have been highly valued by the society. more and more extensive applications. Among them, the elevating fire truck refers to a fire truck equipped with elevating and fire extinguishing devices, which can carry out fire fighting or rescue by climbing. It is mainly divided into: elevating platform fire truck, elevating jet fire truck, and ladder fire truck. [0003] In order to deal with complicated fire situations, existing elevating fire trucks usually use dry powder fire extinguishing agent for fire extinguishing treatment. The typical spraying process includes the following steps: ①Depressurized gas supply from high-pressure nitrogen st...

AI Technical Summary

Problems solved by technology

Because even if the pressure of the dry powder tank is still high, if the content of the sprayed dry powder is very small and there is no sufficient supply strength, it is basically worthless to continue spraying, which wastes both powder and nitrogen.

Therefore, the lack of accurate judgment and control of the timing of jet shutdown is also a common disadvantage of fire trucks with dry powder fire extinguishing systems.

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