What's Aerosol hearth extinguishing
What exactly is aerosol fire extinguisher? Aerosol fireplace extinguishing technological know-how is a completely new sort of fireplace extinguishing know-how made on The premise of navy pyrotechnics.
The primary technology of aerosol hearth extinguishing technological innovation was born within our place, often called smoke hearth extinguishing technologies, which commenced inside the early sixties. It had been finished by scientific scientists within the Tianjin Fireplace Research Institute of Public Protection, who independently produced an automatic smoke hearth extinguishing system, which is especially utilized to extinguish fires at school A, B, and C liquid storage tanks.
Inside the early 1980s, Using the emergence of environmental safety difficulties of “halon hearth extinguishing agent”, discovering solutions to halon became an important investigation subject matter.
At the conclusion of the nineteen eighties, Russian experts very first succeeded in studying aerosol fireplace extinguishing know-how that could extinguish fires in the submerged way, which opened up a whole new way for halon substitution research. Subsequently, aerosol fireplace extinguishing technologies has captivated the eye of your Worldwide Group, and nations including China, America, Australia, Malaysia and other countries have also started exploration on new aerosol fireplace extinguishing technologies.
Generally speaking, aerosol can be a secure condition technique fashioned via the dispersion of good strong or liquid particles inside of a fuel. Professionally, it refers to the colloidal technique that employs gas (generally air) given that the dispersion medium and strong or liquid particles as the dispersant.Common aerosols in mother nature—clouds, smoke, fog, and many others.The dimensions on the particles in aerosols is generally inside the buy of ten-five to ten-oneμm, which has fuel fluidity and might diffuse all-around obstacles.
The medicament inside the aerosol fireplace suppression system machine is sound, as well as element emitted through the medicament throughout the oxidation-reduction response is aerosol. The initial generation of aerosol fire extinguishing technological know-how-smoke fireplace extinguishing technologies.
K-variety aerosol fireplace extinguisher, also called potassium salt fireplace extinguishing technology, is the next phase of the event of aerosol hearth extinguishing technology, which commenced in the previous Soviet Union inside the mid-sixties. Our country begun late With this regard, starting up in the early nineties.
In this type of aerosol making agent, potassium nitrate is mainly employed as the principle oxidant. Its sprays have higher fireplace extinguishing efficiency, but as they incorporate a great deal of potassium ions, Effortless to absorb humidity, forming a yellow and sticky robust alkaline conductive liquid movie, this material is rather damaging to Digital machines, so K-form aerosol computerized fire extinguishing unit cannot be used in Digital gear, precision devices and cultural relics Archive area. At this time, the use on the market is steadily reducing.
The 3rd-technology aerosol (S form) is principally product of strontium salt as the most crucial oxidant. Not like the next-technology potassium salt (K-type) aerosol, strontium ions don't absorb moisture, usually do not kind a conductive Answer, and will never lead to damage to electrical products. In 2001, China Mobile Communications Company picked the strontium salt aerosol (S-form aerosol computerized hearth extinguishing system) produced by the organization just after strict inspection and verification to safeguard its conversation foundation stations and other spots Outfitted with refined Digital equipment.
At this time, strontium salt aerosol products are actually used in thousands of engineering initiatives, and also the third-generation aerosol happens to be Increasingly more approved by end users
Aerosol fireplace extinguisher software selection
a. Electrical fireplace
Interaction room, interaction base station, electronic Laptop space, and so on.;
Electrical fires in destinations containing precision instruments and machines, such as electricity distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.
b. Strong area fire
Floor fireplace of combustible sound products in places in which combustible reliable resources are applied or saved.
c. Liquid hearth
Liquid fires in locations in which diesel oil is developed, used or stored (except -35 diesel), large oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Class C; In advance of extinguishing a gasoline fire, the gasoline supply could be Minimize off.
Aerosol fire suppression system application .
d. The S-sort aerosol hearth extinguishing gadget cannot be used to set out the following fires
①Substances that could be oxidized without air, including nitrocellulose, gunpowder, and many others.; Lively metals, such as potassium, sodium, magnesium, titanium, and so forth.; compounds that will decompose by themselves, for instance specified peroxides, hydrazine, and so forth. Metal hydrides, like potassium fluoride, sodium hydride, and many others. Purely natural substances, for example phosphorus. Solid oxidants, for example nitrogen oxide, fluorine, etc.
② Deep fire of combustible good products.
③ Fire in crowded sites, including theaters, auditoriums, and so forth.
④ Fireplace in locations with explosion hazard, for example workshops with explosive dust.
⑤ Extremely-thoroughly clean ecosystem, such as pharmaceutical workshops, chip processing areas, professional medical rooms, etcetera.
Aerosol hearth extinguishing Doing the job theory
The four things of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The hearth extinguishing system of hearth extinguishing gasoline will be to remove just one or quite a few of your 4 factors of combustion.
The good fire extinguishing agent inside the S-variety aerosol fire extinguishing product is started off by electrical power, and it undergoes redox response to type numerous agglomerated hearth extinguishing aerosols, and its composition is principally N2, a little quantity of CO2, and metal salt good particles.
Aerosol fireplace extinguishing mechanism is as follows
System of endothermic cooling and fire extinguishing
Steel salt particles soak up a great deal of warmth at superior temperatures, and undertake Actual physical endothermic processes for instance thermal melting and gasification. The flame temperature is lowered and afterwards radiated on the combustible combustion surface area for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into cost-free radicals will minimize, plus the combustion reaction velocity are going to be suppressed to a specific extent.
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