Details You Should Be Aware Of Aerosol Fire Extinguishing
Details You Should Be Aware Of Aerosol Fire Extinguishing
Blog Article
Precisely what is Aerosol fireplace extinguishing
What on earth is aerosol fire extinguisher? Aerosol fireplace extinguishing technological know-how is a completely new style of fire extinguishing technologies made on the basis of military pyrotechnics.
The 1st technology of aerosol fireplace extinguishing technological innovation was born inside our country, also referred to as smoke fire extinguishing engineering, which commenced while in the early 1960s. It had been accomplished by scientific scientists in the Tianjin Hearth Exploration Institute of General public Security, who independently designed an computerized smoke fireplace extinguishing system, which is mainly accustomed to extinguish fires at school A, B, and C liquid storage tanks.
From the early nineteen eighties, Using the emergence of environmental safety troubles of “halon hearth extinguishing agent”, acquiring possibilities to halon became an essential analysis matter.
At the end of the eighties, Russian researchers 1st succeeded in investigating aerosol fire extinguishing know-how that could extinguish fires in the submerged way, which opened up a completely new way for halon substitution research. Subsequently, aerosol fire extinguishing technologies has attracted the attention of the international Group, and nations around the world for instance China, The usa, Australia, Malaysia and also other nations have also begun study on new aerosol fire extinguishing systems.
Most of the time, aerosol is usually a secure condition method fashioned through the dispersion of fine good or liquid particles in the gas. Skillfully, it refers to the colloidal process that works by using gasoline (generally air) as the dispersion medium and solid or liquid particles given that the dispersant.Widespread aerosols in nature—clouds, smoke, fog, etc.The dimensions on the particles in aerosols is mostly from the get of ten-five to ten-oneμm, which has gasoline fluidity and will diffuse all around obstacles.
The medicament from the aerosol fire suppression process gadget is stable, as well as the ingredient emitted from the medicament in the oxidation-reduction reaction is aerosol. The primary technology of aerosol fire extinguishing technological know-how-smoke fire extinguishing know-how.
K-type aerosol hearth extinguisher, also known as potassium salt fireplace extinguishing engineering, is the 2nd phase of the development of aerosol hearth extinguishing know-how, which commenced in the former Soviet Union within the mid-nineteen sixties. Our state started out late During this regard, commencing from the early 1990s.
In this kind of aerosol making agent, potassium nitrate is especially utilized as the principle oxidant. Its sprays have superior fire extinguishing effectiveness, but as they contain a large amount of potassium ions, Straightforward to soak up humidity, forming a yellow and sticky powerful alkaline conductive liquid movie, this compound may be very detrimental to Digital products, so K-form aerosol automatic fire extinguishing system cannot be Utilized in electronic equipment, precision devices and cultural relics Archive position. At this time, the use in the market is steadily decreasing.
The third-technology aerosol (S style) is especially crafted from strontium salt as the leading oxidant. Compared with the next-era potassium salt (K-sort) aerosol, strontium ions don't absorb humidity, never sort a conductive Resolution, and will never result in damage to electrical machines. In 2001, China Cell Communications Corporation selected the strontium salt aerosol (S-form aerosol automated fire extinguishing machine) made by the business following strict inspection and verification to shield its conversation foundation stations together with other places Geared up with refined electronic gear.
At the moment, strontium salt aerosol products and solutions are used in A large number of engineering jobs, as well as third-technology aerosol has become Progressively more approved by end users
Aerosol hearth extinguisher application range
a. Electrical hearth
Interaction room, conversation foundation station, Digital Computer system space, etcetera.;
Electrical fires in spots containing precision instruments and equipment, for example energy distribution rooms, generator rooms, cable interlayers, cable wells, cable trenches, and many others.
b. Sound area fire
Floor fireplace of combustible reliable materials in spots where by combustible sound products are employed or saved.
c. Liquid fireplace
Liquid fires in locations wherever diesel oil is created, utilised or saved (besides -35 diesel), major oil, transformer oil, animal and vegetable oil as well as other flammable liquids of Group C; Right before extinguishing a gas hearth, the gasoline supply is usually Reduce off.
Aerosol hearth suppression procedure application .
d. The S-type aerosol fire extinguishing product cannot be utilized to place out the following fires
1. Substances which might be oxidized with out air, for example nitrocellulose, gunpowder, etc.; Energetic metals, for example potassium, sodium, magnesium, titanium, and so forth.; compounds that may decompose by by themselves, like selected peroxides, hydrazine, and many others. Steel hydrides, including potassium fluoride, sodium hydride, and so on. Normal substances, for instance phosphorus. Solid oxidants, which include nitrogen oxide, fluorine, etcetera.
2. Deep fireplace of combustible stable elements.
3. Fireplace in crowded destinations, which include theaters, auditoriums, etcetera.
4. Fire in spots with explosion hazard, such as workshops with explosive dust.
5. Extremely-clear natural environment, for instance pharmaceutical workshops, chip processing destinations, health care rooms, and so forth.
Aerosol fire extinguishing Operating basic principle
The 4 factors of combustion: combustibles, oxidizer, temperature and uninhibited chain reaction. The hearth extinguishing mechanism of fire extinguishing fuel is usually to eradicate 1 or quite a few with the four elements of combustion.
The stable hearth extinguishing agent in the S-style aerosol hearth extinguishing device is started off by electrical energy, and it undergoes redox reaction to sort a lot of agglomerated fire extinguishing aerosols, and its composition is principally N2, a small number of CO2, and metal salt good particles.
Aerosol hearth extinguishing system is as follows
Mechanism of endothermic cooling and hearth extinguishing
Metal salt particles take in a large amount of heat at high temperatures, and go through physical endothermic processes for example thermal melting and gasification. The flame temperature is decreased then radiated to the combustible combustion area for gasification of combustible molecules and vaporized combustible molecules. The heat of pyrolysis of combustion molecules into cost-free radicals will decrease, along with the combustion response velocity will probably be suppressed to a particular extent.
To read more about sol khi go to this useful site: learn here