Composite charging condensation shock wave fire-fighting bomb

Abstract

The invention relates to a fire extinguishing technique and particularly relates to a manufacturing technique of a fire extinguishing bomb which can be released in an airborne manner or used for cannonball launching. The fire extinguishing bomb comprises a cylinder shell provided with a conical warhead; the cylinder shell is provided with a central hole used for placing a low-energy initiating explosive, a fusing device and a firing gear, and a cavity used for holding extinguishing materials; the cavity used for holding extinguishing materials is two or more than two annular- shaped, wherein the liquid extinguishing material is placed in at least one annular-shaped space and powder extinguishing material or foam extinguishing agent is placed in another annular-shaped space; each annular-shaped space is respectively sealed; the ratio of the volume of the central hole to the total volume of the annular-shaped spaces holding the extinguishing materials is controlled at a range from 1-500 to 2000. The extinguishing bomb of the invention is provided with a multi-layer cavity structure in the shell, which can determine the type of the drug placed in different cavities according to the nature and characteristic of the fire scene, combines the physical fire extinguishment and the chemical fire extinguishment, and can put out a fire quickly, moreover, the after-burning does not happen easily, and thus having the advantages of high efficiency, good safety, strong flexibility and low cost.

Description

technical field [0001] The invention relates to a fire extinguishing technology, in particular to a production technology of a fire extinguishing bomb that can be dropped on an aircraft, launched by a rocket or launched by a cannon. Background technique [0002] When the fire is uncontrollable, it will bring great destructiveness and disasters, and pose a huge threat to life, property and the ecological environment. According to statistics on fires published worldwide, in 1995-1996 and 2000, the total number of fires in the United States, Europe, and China was about 12 million, resulting in 13,000 deaths and at least 170,000 injuries. The direct economic losses were respectively 12.9 billion US dollars, 23 billion US dollars and 1.5 billion RMB. With the continuous acceleration of industrialization and urbanization in our country, the development of high-rise buildings is changing with each passing day, but high-rise fire accidents are also increasing. Due to the lack of ef...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are existing examples or research reports that simply utilize water, dry powder or explosives as fire extinguishing materials for fire extinguishing bombs, such as ZL03227425.4, which uses water as a fire extinguishing material to make fire extinguishing bombs, and the internal pressure generated by the combustion of gunpowder passes through the The dense micropores on the cartridge case spray and atomize the water. This purely physical method of extinguishing the fire, due to the low internal pressure, the spraying range is limited, the atomization effect is not good, and the heat radiation is not well suppressed. The utilization rate of water Not high, fire extinguishing is slow, the fire extinguishing efficiency is not high, and it is affected by the water resources of the fire site; such as ZL200620012707.5, which uses the whole dry powder series as the fire extinguishing material to make a drop-type fire extinguishing bomb, which is thrown by a gas generator

There are deficiencies in this fire extinguishing bomb: the use of gas generators has a limited throwing range, uneven throwing, little disturbance to the flow field of the fire field, can not effectively prevent heat radiation, and is easily affected by the fire field environment, etc., and due to slow cooling, the fire field temperature The high temperature still continues, which can easily lead to re-ignition; ZL200410046754.7 uses full explosives as its fire-extinguishing material to make fire-extinguishing bombs. After the explosives explode, thermal shock waves will be generated instantly, causing strong oscillating wind speeds, and destroying the fire field flow field in a short time. Played a better role in extinguishing open flames

But this all-explosive fire extinguishing bomb can't play a good role in suppressing the heat radiation phenomenon of the fire scene, which can easily cause accidents such as personnel burns and fire spread. At the same time, it can't reduce the fire scene temperature, but increases When the fire energy is lost, when the open flame is extinguished, it is very easy to re-ignite

Moreover, the powerful shock wave will cause great damage to the protected object

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