High-expansion foam fire extinguisher

Abstract

The invention provides a high-expansion foam fire extinguisher, and relates to the field of foam fire extinguishers. The fire extinguisher comprises a supporting and fixing bottle body, a proportional mixer is installed at the front end of the supporting and fixing bottle body, a flexible foam siphon is installed at the lower end of the proportional mixer, and a supporting and fixing filter head is installed at the end, away from the proportional mixer, of the flexible foam siphon. A positioning container valve is installed at the upper end of the supporting and fixing bottle body, a fixing threaded rotating shaft is installed at the lower end of the positioning container valve, and a foam positioning nozzle is formed in the right end of the positioning container valve. According to the high-expansion foam fire extinguisher, a fluoroprotein high-expansion foam is adopted and sprayed to a lithium battery to be completely coated, the foam is evaporated and broken at high temperature, a large amount of heat is taken away to cool the battery, the internal temperature is controlled, the detonation probability is reduced, a layer of covering film is formed on the outer side of a protection body after the fluoroprotein foam is evaporated and broken, and air is prevented from making direct contact with an ignition power source.

Description

technical field [0001] The invention relates to the technical field of foam fire extinguishers, in particular to high-expansion foam fire extinguishers. Background technique [0002] Foam fire extinguisher, the principle of fire extinguishing is that when extinguishing a fire, it can spray a large amount of carbon dioxide and foam, which can adhere to the combustibles, isolate the combustibles from the air, and achieve the purpose of extinguishing the fire. Foam fire extinguishers are divided into: portable foam fire extinguishers, cart-type foam fire extinguishers and air-type foam fire extinguishers. Foam fire extinguishers should be stored in a dry, cool, ventilated and accessible place, not close to high temperature or places that may be exposed to the sun, so as to prevent carbon dioxide decomposition and failure; antifreeze measures should be taken in winter to prevent freezing; and dust should be wiped off frequently , Dredge the nozzle to keep it unobstructed. [0...

AI Technical Summary

Problems solved by technology

[0003] At present, lithium batteries used in new energy sources are packaged in metal. When a fire occurs inside the lithium battery, it cannot be sensed in time. Therefore, when the smoke and temperature composite detector is detected, the general gas or water-based fire extinguisher cannot be used to control the fire in time. However, water-based fire extinguishers may also cause secondary fires, so a new type of encased fire extinguisher is required to extinguish the fire, control the surface temperature of the fire battery and isolate the air

[0004] The traditional small-capacity internal pressure foam fire extinguisher, because there is no proportional mixer, the foam solution collides with the air at the nozzle to generate foam, which has the problems of less foaming, fast foam dissipation, low foam thickness, and many water droplets, and cannot cover the protected battery.

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