Differences in the application fields of high, medium and low multiple foam fire extinguishing systems

I. Low multiple foam fire extinguishing system 1. The main components of the low multiple foam fire extinguishing system are: fire water pump, pressure foam proportion mixing device, low multiple air foam generator, rain valve, and other valves and pipe fittings. 2. Fire extinguishing principle After mixing water and foam fire extinguishing agent through a pressure-type proportional mixing device, a certain proportion of foam mixed liquid is formed. The foam is sucked into the air through the foam generator to form foam. Fire. 3. Scope of application The low-expansion foam fire extinguishing system is suitable for processing, storage, loading and unloading, and use of A (except liquefied hydrocarbons), B, and C liquids. Such as: oil fields, oil refineries, chemical plants, docks, underground garages, hangars, airports, fuel oil boiler rooms and other places.

 

Second, medium and high multiple foam fire extinguishing system 1. Composition of medium and high multiple foam fire extinguishing system is mainly composed of fire pumps, pressure proportional mixing devices, foam generators, valves, pipes and so on. 2. Fire extinguishing principle Relying on the advantage of large foaming volume, although the thermal stability of medium and high expansion foams is slightly worse, the foam is easily damaged by flames and affected by outdoor natural wind, but the amount of foam generation per unit time is far greater than foam The amount of damage can quickly fill the burning space and extinguish the flame. 3. Application Scope Medium and high multiple foam fire extinguishing systems are suitable for extinguishing Class A and B fires, limited enclosed space fires, and controlling liquid fires of LPG and LNG. Such as: solid material warehouses, flammable liquid warehouses, industrial buildings at risk of fire, underground construction projects, engine rooms, pump rooms, cargo holds of various ships, valuable instruments and materials, combustible and flammable liquids, and liquefied petroleum gas and liquefaction Flowing fire of natural gas.