Aerosol Fire Extinguisher

Aerosol fire extinguishing system in the past during the operation of jet accidents occurred frequently. The jet is called wrongly, that in the absence of fire fighting equipment against fire The case from start to normal and not fire extinguishing agent release. Spray the entire system error has occurred after their parts suppliers are affected, often cause-related manufacturers, and the use and management of mutual conflict, prevarication, serious impact on the fire Aerosol Extinguishing Technology Development in Health. Therefore, it is necessary to the theory of pyrotechnics and systems in each part of the role played by the function to be discussed in order to unify the understanding, learn from mistakes in the heart and spray solutions, spraying to eliminate the presence of errors. A spray mechanism for extinguishing fires in aerosol is formed by agglutination agglutination of aerosols generated by the products of combustion flame in the integration of cooling and condensation of solid particles.

Because of its small size, diffusion properties, and can spread to the four corners of the space fight against fire and subsidence is low, the particles can protect the space in the fire to remain in suspension for long periods, but as a fire extinguishing agent to use total flooding. Aerosol is mainly gas, solid particles, mainly metal oxides and carbonates, the gas is N2, a small amount of CO2 and CO, the main endothermic decomposition * cooling effect of solid particles, gases and chemicals solid phase inhibition and the dilution of inert gas to reach the fire. aerosol formation about 1 m in diameter of solid particles, the grain size of the particle size is much smaller than the dry powder fire officer to limit the size of the particles. In the flame of particles absorb heat from the flame temperature itself (melt function) when the temperature rises to a certain value, the fusion of particles, the evaporation or decomposition, the additional absorption heat, the endothermic cooling effect is obvious. Example, K2O temperature above 350 º C when the decomposition, K2CO3, decomposed temperature above 891 the endothermic reaction. For small particles, the decomposition of gasification gas homogeneous material on the process of inhibition of the flame leading role, and because the small particles in the presence of flame in a long time, its inhibition has also been enhanced non-homogeneous . Moreover, gasification of small particles can decompose to cool the flame, so the existence of the process of fire extinguishing aerosol physical function and role of the synergistic effect of chemical fire more effective. Due to the formation of aerosol particles is very low, with a strong scattering, aerosols can move around obstacles, you can enter the small gap in the gas of a similar character. Aerosols of solid particles with large surface area, and can fuel the flames of gasification endothermic decomposition reaction occurs over low flame temperature, the Chemical inhibition homogeneous and heterogeneous is very strong, so they have a higher effect of fire. 2 flame aerosol extinguishing system components and function of fire extinguishing system includes three parts: the fight against the fire, control devices and alarm. Fire extinguishing device consists of cartridges, gas generators, box body. Cartridge by electrical ignition, drugs and extinguishing ignition Paperback shell composition of drugs in the gas generator. Consumers in general flame gas generator room cooling and cold storage, generators installed in cabinets. Only the decorative protective box, a box under the different models can be equipped with a number of gas generators. alarm device, including: smoke detectors, temperature sensors, the gas discharge lamps, horns and lights, emergency start and stop buttons. Control device generally has a fire in double loop.