Fire fighting method, fire fighting system and fire fighting truck with fire fighting system

Abstract

The invention relates to a fire fighting method, a fire fighting system and a fire fighting truck with the fire fighting system. The fire fighting method comprises the following steps: absorbing heat by liquid nitrogen flow in a mixer and then gasifying at least part of liquid nitrogen flow into nitrogen gas flow; after striking the nitrogen gas flow with water at high speed, forming a mixture of nitrogen gas and water mist; jetting the mixture of nitrogen gas and water mist to a fire source through a jetting port of the mixer and forming cloudy isolation nearby the fire source; isolating oxygen and reducing the temperature at the fire source, thereby achieving the purpose of fire fighting. According to the invention, the liquid nitrogen and water are mixed and then the mixture of nitrogen gas and water mist is outward jetted; the mist mixture is coated on the fire source; on one hand, the water mist absorbs heat and then is quickly gasified; on the other hand, the nitrogen gas is quickly coated on the fire source; the oxidizing reaction speed in combustion is restrained; the oxygen is effectively isolated; the fire fighting method has dual functions and advantages of water spraying and inert gas fire-fighting; after use, the environment in the place of the fire source is not polluted; the method has the advantages of environmental protection and high efficiency.

Description

technical field [0001] The invention relates to the field of fire protection technology, in particular to a liquid nitrogen as a power source, which can quickly atomize water, and can spray out at high speed after mixing nitrogen and water, and cover the surface of burning objects to isolate oxygen and realize the purpose of fire extinguishing. The fire extinguishing method of the invention also relates to a fire extinguishing system using the fire extinguishing method, and a fire truck equipped with the fire extinguishing system. Background technique [0002] Nitrogen is the main component of air. Under standard atmospheric pressure, it turns into a five-color liquid when cooled to -196°C. The chemical properties of nitrogen are inactive, and it is difficult to react with other substances at room temperature. [0003] As a kind of carbon-free gas, the reverse process of nitrogen hydrate formation is a violent endothermic decomposition and degassing process. After the hydrat...

AI Technical Summary

Problems solved by technology

However, when the fire extinguishing agent is prepared, an inert gas is first filled into a high-pressure mixer, and after the reaction, the hydrate must be placed in a cold storage lower than -10°C. The preparation process is complicated and the conditions are harsh; the process of filling the fire extinguishing agent Fire extinguishing mixers (such as canister fire extinguishers) have limited range, making it difficult to extinguish fires over long distances

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