Fire Extinguishing Mechanism of Aqueous Film Foam Extinguishing Agent

Water film foam extinguishing agent, also known as light water foam extinguishing agent, referred to as AFFF. It is mainly composed of fluorocarbon active agent, and foam stabilizer, preservative and polymer are added. Fluorocarbon active agent has the ability to significantly reduce tension, has high heat resistance and chemical resistance, and is used in combination with hydrocarbon active agent, showing a good synergistic effect, which can effectively reduce the tension of the solution and also reduce the interfacial tension of the oil.

The water film foam extinguishing agent can be foamed in an aqueous solution that is lighter than water, so it can float in the burning liquid, so it is called "light water foam extinguishing agent". Its fire extinguishing performance is better than protein foam and fluorine protein foam, suitable for oil and B fire. Its fire extinguishing principle, in addition to the function of general foam fire extinguishing agent, when it precipitates liquid cold liquid in the combustion liquid at the same time, and forms a layer of water film in the combustion liquid to seal the liquid cold liquid, isolate air from the foam layer, and form an insulation The barrier makes the liquid absorb heat and dilute the oxygen content of the air combustion liquid. It can suffocate the combustion liquid and prevent the heating, evaporation and combustion of the combustion liquid. The fundamental difference between it and other fire extinguishing agents is that the "light water" foam fire extinguishing agent has a double-layer fire extinguishing agent effect of foam and water film, which is the reason for its high fire extinguishing efficiency and short time.

Aqueous film foam fire extinguishing agent foam is mainly composed of tank, capsule, container, inlet pipe, outlet pipe, drain valve, drain valve, safety valve and meter. The foamers are part of the foamers. How does it work in the factory? How big does it work? Do we all know this?

Aqueous film-forming foam extinguishing agent foam is a kind of foam extinguishing agent used for storage. Through the function, the foam extinguishing agent stored in the replacement of fire water supply and the water supply are fixed to form foam.

Aqueous film forming foam fire extinguishers are commonly used with capsule foam cans. The capsule contains foam and is separated from the container. The inlet branch of the device is used to pour pressurized water into the tank, and the other branch is connected to the outlet pipe of the foam tank to feed the extruded foam liquid into the device and form foam with water.