Does anyone know how to use an aerosol fire extinguisher?

Aerosol fire extinguishing device.

According to the way aerosols are generated, they can be divided into hot aerosols and cold aerosols. At present, the aerosol fire extinguishing devices used in domestic engineering are all thermal type, and the cold aerosol fire extinguishing technology is still in the development stage, and there is no formal product. Hot aerosols extinguish fires with the principles of negative catalysis and destruction of the combustion reaction chain.

Aerosol is different from halide halon and inert gas halon substitution technology, ordinary aerosol has residue after fire extinguishing, which is a non-clean fire extinguishing agent, while the new generation of S-type aerosol has a high cleanliness. Due to the different formulations of chemicals used by different companies, the properties of some residues after spraying of non-clean aerosols are also different.

Hot aerosol belongs to the total submersion system, in the case of controlling the fire source gradually full submersion type fire extinguishing, so that personnel have enough time to evacuate and escape, suitable for substation and distribution room, generator room, cable interlayer, cable well, cable trench and other unmanned, relatively closed, small space places, suitable for production, storage of diesel (except -35 diesel), heavy oil, lubricating oil and other class C combustible liquid fire and combustible solid material surface fire.

Aerosols are stored in a solid state and are not volatile, so there are no leakage problems, and they have a long storage life, which makes it easy to monitor the facilities of the protected area at all times. However, the current aerosol cannot be used in the pipeline network transportation system until the technology breakthrough and the type inspection of the national quality inspection center is passed. Ordinary and unclean aerosol residues after fire extinguishing will have a certain impact on precision instruments and electronic equipment, and there is no fixed device that solves the problem and passes the inspection technically, and it is not recommended to protect electrical equipment such as computer rooms and power distribution rooms.

Ordinary aerosols:

It is often called K-type aerosol, which has good fire extinguishing efficiency, and cannot be used in computer rooms, power distribution rooms and other electrical equipment places due to low cleanliness.

Type S aerosols:

Compared with K-type aerosol, it not only has better fire extinguishing efficiency, but also has a higher degree of cleanliness, and the residue after aerosol spraying has less impact on electronic equipment.

Compared with the cost of independent heptafluoropropane, the cost of aerosol is absolutely advantageous, and the space is profitable.

In addition to aerosols, other gas fire extinguishing requires that the supporting facilities of the protection area need to be anti-pressure and anti-riot, and the protection area needs to be equipped with pressure relief ports, so the cost of aerosols on this piece can save users a lot of money.

Hope it will be useful and helpful to you.

Do I need instructions for use? And the operation manual, you can understand which one at a glance.

1. The aerosol fire extinguishing device cannot be used in places with a large amount of energy, and cannot be used to protect flammable and explosive places.

2. Aerosol is a gas-solid mixed phase, which cannot be used in the pipeline network transportation system before the technology breakthrough and the inspection of the National Quality Inspection Center. The residue after aerosol fire extinguishing will have a certain impact on precision instruments and equipment.

Aerosol particles do not volatilize into the atmosphere and tend to adhere to the surface of the device. Colloidal particles can easily lead to optical path blockage, scratching of the drum surface and disc surface, and wear of connectors. The metal salts and metal oxides in aerosol particles have a certain conductivity, which is easy to cause short circuit in electrical equipment.

The visibility in the protective area after spraying is extremely low (about less than meters), which directly affects the escape of personnel (practice has proved that when the visibility of the fire field is less than meters, it is very difficult to escape), so it is not suitable for use in places where people are often occupied. Aerosol fire extinguishing agents contain 40% solid particles, so they are non-clean fire extinguishing materials. It is not easy to settle, and it settles on the surface or inside of the protected item due to the action of the gravitational field, and some can cause equipment failure.

The shelf life of aerosol extinguishing agents is generally four to six years and is related to the preservation environment. After the expiration date, the agent must be replaced.

The release temperature is too high, and it is easy to hurt!

An aerosol fire extinguisher is a relatively new type of firefighting equipment that uses gases produced by a chemical sensitization reaction to extinguish fires. Compared with traditional fire extinguishers, aerosol extinguishers have a variety of advantages, such as easy use, quick response, and good fire extinguishing effect. In addition, it can be used on electrical equipment without leaving residues and without polluting the environment.

However, aerosol fire extinguishers also have some drawbacks. First of all, it has a higher cost of judging and is not as economical as traditional fire extinguishers. Secondly, aerosol fire extinguishers are not as effective as traditional fire extinguishers when it comes to extinguishing some specific types of fires.

Finally, because it uses gases from chemical reactions to extinguish fires, it requires special maintenance and upkeep, and in the event of a breakdown, the repair cost is also high.

Aerosol is a material that can be used to make fire extinguishers, aerosols are generally used in the computer room and power distribution room, and the fire extinguishing efficiency of aerosol fire extinguishers is very good, better than dry powder fire extinguishers. Aerosol fire extinguishers can be divided into S type and K type, and the effectiveness of different types of fire extinguishers is different. The cost of aerosol fire extinguishers is relatively high, but there will be an absolute advantage in profit margins.

Do you know how much is the ** of aerosol fire extinguishing glue? What is the principle of fire extinguishing? Now let's find out.

I. **

Second, the principle of fire extinguishing

1. The four elements of combustion: combustibles, oxidants, temperature and uninhibited chain reaction. The fire extinguishing mechanism of the fire extinguishing gas is one or more of the four elements of eliminating combustion.

The solid fire extinguishing agent in the S-type aerosol fire extinguishing device is started by electricity, and its own redox reaction undergoes redox reaction to form a large number of agglutinated fire extinguishing aerosols, and its components are mainly N2, a small amount of CO2, metal salt solid particles, etc.

2. Endothermic cooling and fire extinguishing mechanism.

Metal salt particles absorb a large amount of heat at high temperatures, and physical endothermic processes such as hot melting and gasification occur, the flame temperature is reduced, and then radiated to the combustion surface of combustibles for gasification of combustible molecules and the heat of pyrolysis of gasified combustible molecules into free radicals will be reduced, and the combustion reaction speed will be inhibited to a certain extent.

3. Fire extinguishing mechanism.

a. Gas-phase chemical inhibition: Under the action of heat, the vaporized metal ions or cations that have lost electrons decomposed in the fire extinguishing aerosol can react with the active groups in combustion, repeatedly consume a large number of active groups, and reduce the combustion of free radicals.

b. Solid-phase chemical inhibition: The particle size in the fire extinguishing aerosol is very small (10-9 10-6m), with a large surface area and surface energy, which can adsorb the active groups in combustion, and the chemical auspicious effect occurs, a large number of active groups are consumed, and the combustion free radicals are reduced.

c. Reduce oxygen concentration: N2 and CO2 in fire extinguishing aerosols can reduce the oxygen concentration in combustion, but its speed is slow, and the fire extinguishing effect is far less than that of endothermic cooling and chemical inhibition.

3. Characteristics

It is non-harmful to the human body, high fire extinguishing efficiency, less fire extinguisher, weight and space saving, environmentally friendly, easy to install, very low maintenance cost and cost saving.

The above is the introduction of aerosol fire extinguishers and fire extinguishing principles. I believe many people know that there are four major elements that need to be in place when extinguishing fires, which are combustible temperature, inhibition and oxidizer, which is a series of chain reactions. Most fire extinguishers are no exception to aerosol fire extinguishers that are extinguished by absorbing heat to cool down, aerosol fire extinguishers can quickly cool down and absorb heat, so as to achieve the effect of extinguishing fires.

Aerosol fire extinguishers extinguish fires very quickly, because the diameter of the micromolecules of aerosols is very small, so it can absorb heat and produce chemical reactions over a large area.

You can get it for free

Endothermic cooling and fire extinguishing mechanism. Metal salt particles absorb a large amount of heat at high temperatures, and physical endothermic processes such as hot melting and gasification occur, the flame temperature is reduced, and then radiated to the combustion surface of combustible substances for gasification of combustible molecules and the heat of pyrolysis of gasified combustible molecules into free radicals will be reduced, and the combustion reaction speed will be suppressed to a certain extent.

Fire extinguishing mechanism: gas phase chemical inhibition: under the action of heat, the decomposed gasified metal in the fire extinguishing aerosol can be used as ions or cations that have lost electrons can react with the active groups in combustion, repeatedly consume a large number of active groups, and reduce the combustion of free radicals.

Solid phase chemical inhibition: the particle size in the fire extinguishing aerosol is very small (10-9 10-6m), with a large surface area and surface energy, which can adsorb the active groups in the combustion, and chemical action occurs, a large number of active groups are consumed, and the combustion of free radicals is reduced.

Low oxygen concentration in dust reduction: N2 and CO2 in the fire extinguishing aerosol can reduce the oxygen concentration in combustion, but its speed is slow, and the fire extinguishing effect is far less than that of endothermic cooling and chemical inhibition.