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Information You Should Be Informed On Aerosol Fire Extinguishing






What's Aerosol fire extinguishing
What's aerosol hearth extinguisher? Aerosol fireplace extinguishing know-how is a brand new variety of hearth extinguishing technological know-how developed on The idea of military services pyrotechnics.

The primary technology of aerosol fireplace extinguishing know-how was born in our country, often called smoke hearth extinguishing technologies, which began in the early nineteen sixties. It had been finished by scientific scientists from the Tianjin Fire Research Institute of General public Stability, who independently produced an automated smoke fireplace extinguishing technique, which is especially used to extinguish fires in Class A, B, and C liquid storage tanks.


From the early eighties, Together with the emergence of environmental defense issues of “halon hearth extinguishing agent”, obtaining alternatives to halon became an essential investigate subject matter.

At the conclusion of the 1980s, Russian researchers very first succeeded in looking into aerosol hearth extinguishing technology that could extinguish fires in a very submerged manner, which opened up a new way for halon substitution exploration. Subsequently, aerosol fire extinguishing technological innovation has attracted the attention of the Worldwide Group, and international locations which include China, the United States, Australia, Malaysia along with other countries have also started research on new aerosol fire extinguishing technologies.

In most cases, aerosol is usually a secure state technique fashioned via the dispersion of fantastic reliable or liquid particles in a gasoline. Skillfully, it refers into a colloidal method that makes use of fuel (generally air) since the dispersion medium and good or liquid particles because the dispersant.Popular aerosols in mother nature—clouds, smoke, fog, etcetera.The dimensions of the particles in aerosols is usually inside the order of 10-5 to ten-1μm, which has gasoline fluidity and may diffuse all around obstructions.

The medicament within the aerosol hearth suppression system machine is stable, as well as the element emitted with the medicament with the oxidation-reduction response is aerosol. The very first era of aerosol fireplace extinguishing technology-smoke hearth extinguishing know-how.

K-style aerosol fireplace extinguisher, also called potassium salt hearth extinguishing technological innovation, is the next phase of the event of aerosol hearth extinguishing technological innovation, which commenced in the former Soviet Union within the mid-nineteen sixties. Our state started out late In this particular regard, starting in the early nineteen nineties.

In this kind of aerosol producing agent, potassium nitrate is especially made use of as the main oxidant. Its sprays have higher hearth extinguishing performance, but simply because they consist of a large amount of potassium ions, Easy to absorb moisture, forming a yellow and sticky robust alkaline conductive liquid movie, this substance is very harming to Digital equipment, so K-form aerosol automated fire extinguishing machine can not be used in Digital machines, precision devices and cultural relics Archive spot. At present, the use available in the market is step by step reducing.

The third-generation aerosol (S kind) is mainly made of strontium salt as the primary oxidant. As opposed to the 2nd-generation potassium salt (K-kind) aerosol, strontium ions never take up dampness, tend not to variety a conductive Resolution, and won't result in harm to electrical products. In 2001, China Mobile Communications Corporation chosen the strontium salt aerosol (S-style aerosol computerized fire extinguishing system) made by the organization after strict inspection and verification to shield its conversation foundation stations along with other locations equipped with complex electronic devices.

At present, strontium salt aerosol solutions are already used in 1000s of engineering jobs, and also the third-generation aerosol has grown to be Increasingly more approved by people

Aerosol fire extinguisher software array
a. Electrical fire
Interaction room, communication foundation station, Digital Personal computer room, and so forth.;

Electrical fires in destinations made up of precision instruments and products, for instance power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, etc.

b. Sound surface hearth
Floor fireplace of combustible good components in sites the place combustible reliable elements are used or saved.

c. Liquid fire
Liquid fires in locations where diesel oil is made, employed or saved (apart from -35 diesel), large oil, transformer oil, animal and vegetable oil together with other flammable liquids of Group C; In advance of extinguishing a fuel hearth, the gas source can be Minimize off.

Aerosol fireplace suppression process application .

d. The S-style aerosol fire extinguishing product cannot be accustomed to place out the subsequent fires
①Substances that can be oxidized without the need of air, for example nitrocellulose, gunpowder, and so forth.; Lively metals, which include potassium, sodium, magnesium, titanium, etcetera.; compounds which will decompose by on their own, such as selected peroxides, hydrazine, etc. Steel hydrides, including potassium fluoride, sodium hydride, and so on. Purely natural substances, which include phosphorus. Solid oxidants, for example nitrogen oxide, fluorine, etcetera.

② Deep fireplace of combustible solid components.

③ Hearth in crowded spots, for instance theaters, auditoriums, and so forth.

④ Fireplace in places with explosion hazard, which include workshops with explosive dust.

⑤ Extremely-clean up atmosphere, for example pharmaceutical workshops, chip processing areas, healthcare rooms, etcetera.

Aerosol fireplace extinguishing Doing the job principle
The 4 things of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fireplace extinguishing system of hearth extinguishing gasoline will be to eliminate one or quite a few with the four factors of combustion.

The sound fire extinguishing agent during the S-form aerosol fireplace extinguishing machine is started out by electrical energy, and it undergoes redox response to type numerous agglomerated hearth extinguishing aerosols, and its composition is mainly N2, a little level of CO2, and metal salt strong particles.

Aerosol hearth extinguishing mechanism is as follows
System of endothermic cooling and hearth extinguishing
Steel salt particles absorb a large amount of heat at large temperatures, and undergo Actual physical endothermic processes for example thermal melting and gasification. The flame temperature is lowered after which radiated into the combustible combustion surface area for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into free of charge radicals will minimize, and the combustion reaction velocity will likely be suppressed to a certain extent.
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