Carbon dioxide fire extinguishing agent is a fire extinguishing agent with a history of more than 100 years. It is cheap, easy to obtain and prepare. It mainly relies on suffocation and partial cooling to extinguish fires. Carbon dioxide has a higher density, about 1.5 times that of air.
Under normal pressure, liquid carbon dioxide will vaporize immediately. Generally, 1kg of liquid carbon dioxide can produce about 0.5 cubic meters of gas. Therefore, when extinguishing a fire, carbon dioxide gas can exclude air and surround the surface of burning objects or be distributed in a relatively closed space, reducing the oxygen concentration around combustibles or in protective spaces, causing a suffocation effect to extinguish fires. In addition, when carbon dioxide is ejected from the storage container, it will quickly vaporize from liquid to gas, absorbing part of the heat from the surroundings and playing a cooling role.
Carbon dioxide fire extinguishers are fire extinguishers that use filled liquid carbon dioxide to extinguish fires. It is composed of cylinder, bottle valve, injection system and other components. Divided into: (1) Portable carbon dioxide fire extinguishers. The total weight is less than or equal to 28kg, and there are four specifications: 2kg, 3kg, 5kg, and 7kg; (2) Trolley-type carbon dioxide
Fire Extinguisher. The total weight is greater than 28kg, and its specifications are 20kg and 25kg. Carbon dioxide fire extinguishers are suitable for extinguishing initial fires involving various flammable liquids and flammable gases. As well as fires in live equipment, precision electronic instruments, and valuable equipment. However, it should not be used outdoors when there is strong wind. After use in a narrow and enclosed space, ventilation or personnel must be evacuated from the site in time to prevent suffocation.
When pressurizing, liquid carbon dioxide is compressed into a small cylinder, and then sprayed out when extinguishing a fire, which has the effect of cooling and isolating the air.
Carbon dioxide fire extinguishers are mainly used to extinguish initial fires of valuable equipment, archives, instruments, electrical equipment below 600 volts and oil.
It has excellent properties such as good fluidity, high injection rate, non-corrosion to containers and non-deterioration. It is used to extinguish initial fires in books, files, valuable equipment, precision instruments, electrical equipment below 600 volts and oil. Suitable for extinguishing Class B fires (such as kerosene, diesel, crude oil, methanol, ethanol, asphalt, paraffin, etc.) Suitable for extinguishing Class C fires (such as coal gas, natural gas, methane, ethane, propane, hydrogen, etc.) Class E fires (fires in which electrified objects burn).
