Extended-range long-distance dry powder fire extinguishing system and operation method thereof

Abstract

The invention relates to an extended-range long-distance dry powder fire extinguishing system and an operation method thereof. The extended-range long-distance dry powder fire extinguishing system comprises a pressure-resistant powder tank and an inert gas source, wherein one end of a partial pressure pipeline communicates with the inert gas source, and the other end of the partial pressure pipeline is divided into two branches, one branch is a connecting pipeline, and the connecting pipeline simultaneously communicates with the pressure-resistant powder tank; one end of a conveying pipeline communicates with the pressure-resistant powder tank, and the other end of the conveying pipeline communicates with a conveying terminal; a hopper for conveying dry powder extinguishing agent is arranged at the top of the pressure-resistant powder tank; the other branch of the partial pressure pipeline is a pressurizing pipeline, the pressurizing pipeline and the conveying pipeline communicate witheach other through at least one communicating pipeline, and one communicating pipeline corresponds to a one-way valve. According to the system, the dry powder extinguishing agent can be used as a fire extinguishing medium on a high-altitude fire-fighting platform, the characteristic that the dry powder medium and gas powder two-phase mixed flow is light in self weight is fully utilized, the fireextinguishing medium can reach higher height easily, and the problem of high-altitude fire fighting is solved.

Description

technical field [0001] The invention relates to an extended-range long-distance dry powder fire-fighting system and an operation method, belonging to the field of information and automatic control for fire-fighting systems. Background technique [0002] With the acceleration of urban modernization, more and more high-rise super high-rise buildings appear in the city. Compared with the increasing number of high-rise buildings, the fire rescue of high-rise buildings is facing difficulties. The main fire extinguishing medium of existing high-rise fire fighting is water, limited by the high weight of the water medium, the spraying height of fire water guns and water cannons is generally less than 50 meters. The high-flow and high-firing fire water cannons have extremely high requirements on the stability of the platform. At present, the lifting height of domestic climbing fire trucks is mostly concentrated below 68 meters, and only a few cities have fire trucks exceeding 100 met...

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Problems solved by technology

Driven by inert gas, and the dry powder fire extinguishing agent is carried by the inert gas to form a gas-powder two-phase mixed flow, which can realize long-distance transmission of dry powder fire extinguishing agent through pipelines; The weight advantage of high-altitude fire-fighting transportation; but at present, the pipe-network dry powder system has not been used for high-altitude firefighting. The main reason is that the current pipe-network dry powder system is carried out in a pressurized way, with limited transmission distance, short injection time, and poor fire extinguishing continuity. , it is difficult to meet the needs of high-altitude fire protection, so the current pipe network dry powder system is mainly used for initial fire suppression of fixed equipment and sites

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