Information It Is Important To Find Out About Aerosol Fire Extinguishing
What is Aerosol hearth extinguishing
What exactly is aerosol fire extinguisher? Aerosol hearth extinguishing technological innovation is a completely new kind of fire extinguishing engineering made on The premise of armed service pyrotechnics.
The 1st generation of aerosol hearth extinguishing know-how was born in our place, also referred to as smoke hearth extinguishing technology, which began from the early sixties. It was accomplished by scientific scientists through the Tianjin Fire Research Institute of Community Stability, who independently formulated an computerized smoke hearth extinguishing system, which is mainly accustomed to extinguish fires at school A, B, and C liquid storage tanks.
During the early nineteen eighties, While using the emergence of environmental safety challenges of “halon fire extinguishing agent”, discovering options to halon turned a significant study topic.
At the end of the nineteen eighties, Russian experts 1st succeeded in investigating aerosol fire extinguishing technological know-how that can extinguish fires in the submerged manner, which opened up a new way for halon substitution investigation. Subsequently, aerosol fireplace extinguishing engineering has attracted the attention in the international Group, and nations which include China, The us, Australia, Malaysia together with other international locations have also begun investigate on new aerosol hearth extinguishing systems.
Most of the time, aerosol can be a secure state system fashioned with the dispersion of great solid or liquid particles in the fuel. Skillfully, it refers to a colloidal method that utilizes fuel (usually air) because the dispersion medium and strong or liquid particles because the dispersant.Popular aerosols in mother nature—clouds, smoke, fog, and so forth.The scale with the particles in aerosols is mostly while in the purchase of 10-5 to 10-1μm, that has gasoline fluidity and may diffuse close to obstacles.
The medicament during the aerosol hearth suppression procedure system is solid, along with the part emitted through the medicament through the oxidation-reduction reaction is aerosol. The initial generation of aerosol hearth extinguishing technological innovation-smoke fireplace extinguishing engineering.
K-style aerosol fire extinguisher, also referred to as potassium salt fireplace extinguishing technological know-how, is the second phase of the event of aerosol hearth extinguishing engineering, which commenced in the previous Soviet Union during the mid-1960s. Our place started out late With this regard, starting during the early nineteen nineties.
In this sort of aerosol making agent, potassium nitrate is especially made use of as the most crucial oxidant. Its sprays have superior hearth extinguishing effectiveness, but given that they include a great deal of potassium ions, Easy to soak up moisture, forming a yellow and sticky potent alkaline conductive liquid movie, this compound is extremely harming to Digital tools, so K-type aerosol automatic fireplace extinguishing unit can't be used in electronic equipment, precision instruments and cultural relics Archive spot. At the moment, the use on the market is little by little reducing.
The 3rd-technology aerosol (S sort) is principally fabricated from strontium salt as the most crucial oxidant. As opposed to the second-technology potassium salt (K-style) aerosol, strontium ions do not soak up dampness, do not form a conductive Remedy, and is not going to result in harm to electrical equipment. In 2001, China Cellular Communications Company chosen the strontium salt aerosol (S-type aerosol automated hearth extinguishing system) made by the company just after strict inspection and verification to safeguard its interaction base stations and other locations Outfitted with complex electronic products.
At the moment, strontium salt aerosol products have already been utilized in 1000s of engineering tasks, and the 3rd-era aerosol is becoming A lot more recognized by consumers
Aerosol fireplace extinguisher software range
a. Electrical hearth
Communication place, communication base station, Digital Laptop area, and so on.;
Electrical fires in sites containing precision instruments and tools, such as energy distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, etcetera.
b. Solid surface hearth
Surface hearth of combustible reliable supplies in destinations wherever combustible stable elements are utilised or saved.
c. Liquid hearth
Liquid fires in areas the place diesel oil is created, made use of or stored (apart from -35 diesel), heavy oil, transformer oil, animal and vegetable oil along with other flammable liquids of Class C; Prior to extinguishing a gas hearth, the fuel resource is often cut off.
Aerosol hearth suppression system software .
d. The S-style aerosol fireplace extinguishing unit can't be utilized to set out the subsequent fires
①Substances which can be oxidized without the need of air, such as nitrocellulose, gunpowder, and so forth.; active metals, like potassium, sodium, magnesium, titanium, and so on.; compounds which will decompose by them selves, like selected peroxides, hydrazine, and so forth. Metal hydrides, which include potassium fluoride, sodium hydride, etc. All-natural substances, for instance phosphorus. Potent oxidants, which include nitrogen oxide, fluorine, etc.
② Deep fireplace of combustible sound elements.
③ Fire in crowded destinations, for instance theaters, auditoriums, etcetera.
④ Fire in destinations with explosion hazard, such as workshops with explosive dust.
⑤ Extremely-thoroughly clean natural environment, like pharmaceutical workshops, chip processing locations, medical rooms, and so on.
Aerosol fire extinguishing Doing work theory
The four aspects of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fire extinguishing mechanism of hearth extinguishing gas is always to remove a person or a number of on the 4 features of combustion.
The good fireplace extinguishing agent during the S-form aerosol hearth extinguishing gadget is begun by electrical power, and it undergoes redox reaction to type a lot of agglomerated fire extinguishing aerosols, and its composition is mainly N2, a small amount of CO2, and steel salt strong particles.
Aerosol fireplace extinguishing system is as follows
System of endothermic cooling and fire extinguishing
Metal salt particles absorb a large amount of warmth at high temperatures, and go through Bodily endothermic processes such as thermal melting and gasification. The flame temperature is decreased after which you can radiated to your combustible combustion surface for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into free of charge radicals will lessen, plus the combustion reaction speed will probably be suppressed to a particular extent.
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