Extinguishing apparatus combined pyrotechnical aerosol with powder extinguishing agent

Abstract

A fire extinguisher using pyrotechnic aerosol and dried fire extinguishing powder is composed of ignitor, end cover, casing, burning chamber, net filtering, connector, chemical cooling chamber full of the microspheres prepared from the mixture of potassium nitrate and potassium carbonate, physical cooling chamber full of spherical Al2O3, dried fire extinguishing powder module, pressure buffering chamber, sealing film and nozzle.

Description

Technical field [0001] The invention relates to a novel fire extinguishing device, which is a fire extinguishing device which comprehensively utilizes the combined fire extinguishing efficiency of pyrotechnic aerosol and dry powder fire extinguishing agent. technical background [0002] Aerosol fire extinguishing device is a new type of fire extinguishing equipment developed rapidly in recent years. It is widely used because of its small size and good fire extinguishing effect. As we all know, fire extinguishing aerosol is a kind of N 2 , CO 2 、H 2 Gas-solid aerosol composed of gas such as steam and metal oxide particles, there is inevitably a certain proportion of harmful gases such as CO, NO, HCN, NH in the aerosol 3 Wait. Generally, the temperature of the combustion product of pyrotechnic aerosol fire extinguishing agent is usually between 800-1000°C, and in order to ensure that no thermal damage is caused to the objects in the protected space, the actual use of pyrot...

AI Technical Summary

Problems solved by technology

Generally, the temperature of the combustion product of pyrotechnic aerosol fire extinguishing agent is usually between 800-1000°C, and in order to ensure that no thermal damage is caused to the objects in the protected space, the actual use of pyrotechnic aerosol fire extinguishing devices requires that the aerosol outlet temperature be controlled at 100-200°C. Therefore heat absorption, cooling and purification filter devices are generally designed in the pyrotechnic aerosol fire extinguishing device, for example, iron balls and stone balls are used to form the heat absorption and cooling layer in a kind of aerosol fire extinguishing device disclosed in CN2313619Y; The metal material constitutes the cooling layer to reduce the temperature of the aerosol; CN2558404Y adopts chemical cooling materials (ammonia salts, carbonates, chlorides and mixtures thereof) to prevent fire and reduce the temperature; although this type of technology can reduce the temperature, it is A negative technical measure that does not make full use of the energy released by the aerosol cooling process

Images