Radial foam fire extinguishing system of oil storage tank

Abstract

The invention discloses a radial foam fire extinguishing system for an oil storage tank: a buoyancy support suspended on the oil surface is arranged in the oil storage tank, a fire extinguishing foam injection device is fixedly installed on the buoyancy support, and the fire extinguishing foam injection device passes through the pipeline and the oil storage The fire extinguishing foam supply device outside the tank is connected; the fire extinguishing foam injection device is composed of a buffer concentrator located at the center of the buoyancy support and eight nozzles radially and equally distributed on the outer periphery of the buffer concentrator. In the plane, they are respectively connected with the buffer concentrator, and the spray holes are arranged at intervals along the length direction with openings facing downward and at a proper height from the liquid surface. The invention saves fire extinguishing agent (more than half), has good fire extinguishing effect and high efficiency, and is suitable for fire extinguishing of various fixed-roof oil storage tanks; meanwhile, it can also be popularized and applied to fire extinguishing of various flammable liquid fixed-roof storage tanks.

Description

Technical field: [0001] The invention relates to a radial foam 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, my country's consumption of oil products is increasing day by day, and fires in oil storage tanks are also increasing day by day, and many serious and extraordinarily serious fire accidents occur frequently. Traditional oil storage tanks use the traditional method of spraying foam on the outside of the tank to extinguish fire. The fire extinguishing efficiency is low or does not play a role in extinguishing fire at all, and the waste of fire extinguishing foam is very serious. In recent years, the foam fire extinguishing system has been applied on the liquid surface or supplied under the liquid surface. When the foam fire extinguishing system is applied on the liquid surface, when the foam flows downward along the inner wall of the tank,...

AI Technical Summary

Problems solved by technology

When the foam fire extinguishing system is applied on the liquid surface, when the foam flows downward along the inner wall of the tank, it is roasted by a high-temperature flame, especially in the case of low oil level. When the fire extinguishing foam flows out of the foam generator, most of the foam flows When the wall flows downward, it will be destroyed before reaching the liquid surface, and the waste of fire extinguishing foam is very serious; while the supply foam fire extinguishing system under the liquid surface is distributed in a dispersed state when it reaches the oil surface when the oil level is high, the diffusion is slow, and it is subject to When the high-temperature flue gas acts on it, it will also quickly shatter; at the same time, when the safety valve in the tank is damaged at high temperature, it may also produce high-temperature oil backflow, which is even more harmful

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