Radial ultra-fine water mist fire-extinguishing system for oil storage tank

Abstract

The invention discloses a radial ultra-fine water mist fire-extinguishing system for an oil storage tank. A metal support which suspends on the oil surface is arranged in the oil storage tank. An ultra-fine water mist spraying device is fixedly arranged on the metal support, and the ultra-fine water mist spraying device communicates with a high-pressure water supply device outside the oil storage tank through a pipeline. The metal support is composed of two to three aluminum alloy rings and reinforcing ribs, wherein the aluminum alloy rings are of a concentric circle structure, and the reinforcing ribs are connected between the aluminum alloy rings. The ultra-fine water mist spraying device is composed of a high-pressure water collector and six metal pipes, wherein the high-pressure water collector is arranged in the circle center of the aluminum alloy rings, and the metal pipes are equally distributed on the periphery of high-pressure water collector in a radial mode. The six metal pipes are located in the same plane and all communicate with the high-pressure water collector. Ultra-fine water mist nozzles which are open downwards are arranged on the metal water pipes in the length direction at intervals. By the adoption of the radial ultra-fine water mist fire-extinguishing system for the oil storage tank, an oil tank fire can be extinguished rapidly and effectively, and the temperature in a tank body is effectively decreased; and in addition, the situation that a large amount of water enters the fuel oil can be prevented, and the boilover phenomenon and violent explosions are avoided.

Description

Technical field: [0001] The invention relates to a radial ultrafine water mist fire extinguishing system for an oil storage tank, which belongs to the field of fire prevention and fire science and technology. Background technique: [0002] In recent years, the consumption of oil products in our country has been increasing rapidly, and severe fire accidents of oil storage tanks have occurred frequently. However, the fire extinguishing speed of the traditional foam fire extinguishing system is slow, the waste of fire extinguishing agent is very serious, and it will also cause secondary pollution. After the fire is extinguished, there may be secondary recombustion or explosion; If the diameter is too large, the evaporation speed is slow, and under the momentum of high-speed water mist, it may be sprayed directly to the oil surface. Excessive moisture entering the fuel oil in the storage tank will cause the oil to contain too much water and cannot be used; more importantly, if ...

AI Technical Summary

Problems solved by technology

However, the fire extinguishing speed of the traditional foam fire extinguishing system is slow, the waste of fire extinguishing agent is very serious, and it will also cause secondary pollution. After the fire is extinguished, there may be secondary recombustion or explosion; If the diameter is too large, the evaporation speed is slow, and under the momentum of high-speed water mist, it may be directly sprayed to the oil surface

Excessive moisture entering the fuel oil in the storage tank will cause the oil to contain too much water and cannot be used; more importantly, if the temperature of the oil in the storage tank exceeds the boiling point of water, it will cause a very harmful "swelling" Once "boiling" occurs, a large number of fuel droplets fly into the high-temperature flame area, the evaporation rate of flammable gas increases sharply, and the pressure in the tank increases sharply in a short period of time, which may cause an instant violent explosion of the oil storage tank

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