According to the national standard fire classification, fires are divided into six categories: A, B, C, D, e and F. what does a mean in fire classification?
A in fire classification
There are many kinds of fire extinguishers, which can be divided into portable and wheeled according to their moving mode; According to the power source of driving fire extinguishing agent, it can be divided into: gas cylinder type, pressure storage type and chemical reaction type; The fire extinguishing agents can be divided into: foam, dry powder, halogenated alkane, carbon dioxide, water and so on.
Dry powder fire extinguisher
Principle: the dry powder fire extinguisher is filled with dry powder fire extinguishing agent. Dry powder fire extinguishing agent is a dry and easily flowing fine powder used for fire extinguishing. It is composed of fine solid powder formed by drying, crushing and mixing inorganic salt with fire extinguishing efficiency and a small amount of additives. Use compressed carbon dioxide to blow out dry powder (mainly containing sodium bicarbonate) to extinguish the fire.
Structure: the dry powder fire extinguisher uses carbon dioxide gas or nitrogen gas as power to spray the dry powder in the bottle to extinguish the fire. Dry powder is a dry, easy to flow fine solid powder, which is composed of fire extinguishing base material, moisture-proof agent, flow accelerator, caking prevention agent and other additives.
Expand data
'ABC dry powder fire extinguisher' means that it can extinguish class A, class B and class C fires.
Used to extinguish class A, B, C, D and e fires.
Class a combustible solid fire. Such as wood, cotton, plastic, etc.
Class B liquid or fusible solid fire. Such as gasoline, paraffin, etc.
Class C combustible gas fire. Such as gas, methane, etc. Class D refers to metal fire. Such as potassium, sodium, etc. Class E live object fire. Such as power transformation and distribution station, power house, etc. （HuoZaiFenLeiZhongDeaShiZhiShenMe）