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Common fire extinguisher use
2015年06月26日

Extinguishing device of many kinds, according to the movement can be divided into three types: portable and transportable; driven by the fire extinguishing agent of power source can be divided into: gas bottle type, reservoir pressure, chemical reaction type, according to the filling of the fire extinguishing agent can be divided into: foam, dry powder, halogenated alkanes, carbon dioxide, acid and alkali, water and so on. Below to introduce several common fire extinguisher use method:
1 water fire extinguisher
The water extinguisher is composed of a safety cap, a lifting ring, a cylinder, a carbon dioxide gas storage cylinder and a nozzle. Water fire extinguishing device in filling cylinder is clean water, so called water fire extinguisher. It is mainly used for extinguishing fire solids, fires such as wood, cotton, textile etc..
Water fire-extinguishing device is used with a method: the water fire extinguisher provided to the scene, in from the combustion about 10 meters, fire is erect on the stability. Note: fire extinguisher can not be placed in from burning too far away. This is because water fire extinguisher effective injection distance in about 10 meters, otherwise, water fire extinguishing water sprayer, spray not to fire on the. Remove insurance cap, protruding head, open top rod with the palm slap at this time, water is ejected from the nozzle. When the water from the nozzle immediately with a hand brought fire cylinder cover ring, bottom ring of fire extinguishers in the other hand cupped, jet flow alignment burning the most violent injection. Because the water fire extinguisher effective water injection time is only about 1 minutes, so when the fire extinguisher with water, should be quickly put the fire extinguisher, the flow of water at the most violent jet. With the fire extinguisher injection distance shortened, the operator should gradually close to the fire, so that the flow of water is always injected in the burning, until the fire extinguished. Water fire is in the use of the process should always with the ground to keep approximately perpendicular to the state, cannot be reversed or recline, otherwise, it will influence of water jet.
2 carbon dioxide fire extinguisher
Carbon dioxide fire extinguishing device in filling of the pressurized liquefied carbon dioxide. It is mainly used for fighting a, B, C class liquid, such as oil, combustible gas (such as gas and charged equipment since the beginning of the fire. Carbon dioxide fire extinguisher has two kinds of portable and cart type, portable type carbon dioxide fire extinguisher weight is generally not more than 28 kg, when used by the operator. Cart type carbon dioxide fire extinguisher weight is generally more than 60 kg, when used by the operator to push or pull the move.
Portable carbon dioxide fire extinguishers use method: portable type carbon dioxide fire extinguisher has 2 kilograms, 3 kilograms, 5 kilograms, four kinds of specifications. Using portable carbon dioxide fire extinguishers, portable fire extinguishers are provided, or the fire extinguishing device to carry on the shoulder, rushed to the scene of the fire. Away from the fire point about 5 meters, lay down fire extinguishers, handle of a hand holding a horn type spray cylinder root, the flame spray cylinder alignment; the other hand unscrew the handwheel, carbon dioxide will be jetted out. Dispersed liquid fire fighting, should make the carbon dioxide from near and far to the flame jet, such as burning face greater, the operator can be left and right swing spray cylinder until put out the fire. Fighting a fire in a container, the operator should hold the handle of the spray tube root, emitted from one side of the upper part of the container to the container, but do not make carbon dioxide directly impact to the surface, so that the combustible liquid out of the window and can enlarge the fire.
3 foam fire extinguisher
Foam extinguisher is used to save general class B fire, fire such as oil products, grease, can also be applied to class a fire, but can not save the class B fire water solubility flammable, flammable liquid fires, such as alcohol, ester, ether, ketone, etc. material fire; also cannot save electrical equipment and class C and D fires.
Use foam: ring cylinder upper hand, quickly rushed to the scene. At this time should pay attention not to make the fire extinguisher excessive tilt, more not to cross or upside down, so as to avoid the mixture of two kinds of medicine and advance. When the ignition temperature of the distance is about 10 meters, can be cylinder upside down over, a hand grip ring, another ahold of the cylinder bottom ring, the jet is directed at the burning material. In combustible liquid fire extinguishing, as shown flowing shape combustion, youyuanerjin of injection foam, so that the bubble is completely covered on the combustion surface; as in container combustion should be will foam fired at the container wall, so that the bubble flow along the inner wall, gradually covering fire level. Avoid direct alignment of the liquid and spray, so as not to due to the impact of a jet, but the combustion of liquid dispersed or out of the container, expand the scope of combustion. When a fire is put out of a solid material, the jet is directed at the most violent place. When the fire extinguishing with the effective injection distance is shortened, the user should gradually close to the combustion zone, and will begin to spray the foam on the fire until the fight. When used, the fire extinguisher should always remain in an inverted state, otherwise it will interrupt the injection.
4 acid base extinguisher
Acid and alkali fire extinguisher is suitable for the fire fighting of the burning of a material, such as wood, fabric, paper and so on. It can not be used to save the B type of material burning fire, nor can it be used to fight the C class of combustible gas or D light metal fire. At the same time, it can not be used for the fire fighting of charged objects.
Acid base fire extinguisher use method: the use of the upper part of the upper part of the barrel body to carry the ring, quickly rushed to the ignition point. Must not carry the fire extinguisher on the back, nor excessive tilt, in order to prevent the mixture of two kinds of liquid and advance injection. At a distance of combustion products of about 6 meters, you can fire extinguishing device upside down, and shake a few times, the two kinds of liquid to speed up mixing; a hand holding ring, on the other hand seize under the barrel to the bottom ring of the spray jet alignment burning the most violent jet. At the same time with the reduction of the injection distance, the use of people should be pushed closer to the fire department.