Information It's Essential To Know About Aerosol Fire Extinguishing
Information It's Essential To Know About Aerosol Fire Extinguishing
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Precisely what is Aerosol fireplace extinguishing
What's aerosol fireplace extinguisher? Aerosol fire extinguishing engineering is a new variety of hearth extinguishing engineering created on The premise of navy pyrotechnics.
The initial technology of aerosol hearth extinguishing technology was born within our country, often known as smoke fireplace extinguishing engineering, which began from the early 1960s. It had been finished by scientific scientists from the Tianjin Fireplace Study Institute of General public Safety, who independently made an automatic smoke hearth extinguishing procedure, which is mainly accustomed to extinguish fires in school A, B, and C liquid storage tanks.
In the early eighties, While using the emergence of environmental protection troubles of “halon fireplace extinguishing agent”, finding choices to halon grew to become a very important study subject.
At the end of the eighties, Russian researchers to start with succeeded in researching aerosol hearth extinguishing know-how which can extinguish fires in a submerged method, which opened up a different way for halon substitution investigate. Subsequently, aerosol fireplace extinguishing technology has attracted the eye from the Worldwide Neighborhood, and nations including China, The us, Australia, Malaysia along with other nations have also begun analysis on new aerosol fire extinguishing technologies.
Most of the time, aerosol is usually a secure point out process shaped from the dispersion of fine good or liquid particles in a very gasoline. Professionally, it refers to some colloidal program that makes use of gas (generally air) as the dispersion medium and stable or liquid particles because the dispersant.Common aerosols in character—clouds, smoke, fog, and so on.The scale in the particles in aerosols is generally while in the purchase of 10-five to 10-oneμm, which has fuel fluidity and may diffuse about road blocks.
The medicament from the aerosol fire suppression procedure system is strong, as well as part emitted by the medicament from the oxidation-reduction reaction is aerosol. The 1st generation of aerosol hearth extinguishing technologies-smoke fireplace extinguishing technologies.
K-style aerosol fire extinguisher, also referred to as potassium salt fire extinguishing technological innovation, is the 2nd stage of the event of aerosol fire extinguishing technological innovation, which began in the former Soviet Union in the mid-sixties. Our country started out late During this regard, starting up in the early 1990s.
In this kind of aerosol creating agent, potassium nitrate is especially used as the principle oxidant. Its sprays have superior hearth extinguishing effectiveness, but mainly because they have a great deal of potassium ions, Uncomplicated to soak up moisture, forming a yellow and sticky robust alkaline conductive liquid movie, this material may be very damaging to electronic gear, so K-sort aerosol automated hearth extinguishing machine cannot be used in electronic tools, precision instruments and cultural relics Archive area. At the moment, the use available in the market is step by step lowering.
The 3rd-technology aerosol (S form) is especially product of strontium salt as the key oxidant. Not like the next-era potassium salt (K-variety) aerosol, strontium ions do not absorb humidity, never sort a conductive Alternative, and is not going to result in damage to electrical gear. In 2001, China Cellular Communications Company chosen the strontium salt aerosol (S-kind aerosol automatic fireplace extinguishing product) produced by the business soon after rigid inspection and verification to protect its interaction foundation stations together with other spots equipped with sophisticated Digital products.
At present, strontium salt aerosol products are actually utilized in A huge number of engineering projects, as well as third-technology aerosol has grown to be A lot more acknowledged by users
Aerosol hearth extinguisher application array
a. Electrical fire
Interaction space, interaction base station, Digital Personal computer home, and so forth.;
Electrical fires in locations made up of precision instruments and products, like electric power distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and so on.
b. Good surface area fireplace
Surface area fireplace of combustible strong elements in locations wherever combustible sound materials are utilised or saved.
c. Liquid fireplace
Liquid fires in areas where by diesel oil is made, applied or stored (besides -35 diesel), significant oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Group C; Right before extinguishing a gas fire, the gasoline supply is usually Reduce off.
Aerosol hearth suppression process software .
d. The S-type aerosol fire extinguishing unit can't be utilized to set out the following fires
1. Substances which can be oxidized without the need of air, such as nitrocellulose, gunpowder, and so on.; Energetic metals, including potassium, sodium, magnesium, titanium, and so forth.; compounds that can decompose by themselves, like specific peroxides, hydrazine, and so forth. Steel hydrides, which include potassium fluoride, sodium hydride, etcetera. Natural substances, including phosphorus. Robust oxidants, for example nitrogen oxide, fluorine, and so forth.
2. Deep hearth of combustible sound components.
3. Hearth in crowded areas, including theaters, auditoriums, and so on.
4. Fire in places with explosion hazard, such as workshops with explosive dust.
5. Extremely-cleanse natural environment, for example pharmaceutical workshops, chip processing spots, health-related rooms, and so on.
Aerosol fire extinguishing Doing the job theory
The four elements of combustion: combustibles, oxidizer, temperature and uninhibited chain response. The fireplace extinguishing mechanism of fireplace extinguishing gasoline is always to eliminate a person or various on the four things of combustion.
The reliable fire extinguishing agent in the S-form aerosol fire extinguishing device is begun by electrical energy, and it undergoes redox response to kind a large number of agglomerated hearth extinguishing aerosols, and its composition is mainly N2, a little quantity of CO2, and metallic salt sound particles.
Aerosol fireplace extinguishing mechanism is as follows
System of endothermic cooling and fire extinguishing
Steel salt particles absorb a great deal of warmth at substantial temperatures, and undergo Bodily endothermic procedures for example thermal melting and gasification. The flame temperature is lowered then radiated towards the combustible combustion floor for gasification of combustible molecules and vaporized combustible molecules. The warmth of pyrolysis of combustion molecules into free of charge radicals will minimize, as well as the combustion response speed is going to be suppressed to a specific extent.
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