(续上期)二氧化碳灭火器一、手提式二氧化碳灭火器1.用途:能扑灭油类、易燃液体、电器设备、文物档案等初起火灾,但不能扑灭钾、钠、镁等轻金属火灾。其灭火效能虽不如干粉和“1211”灭火器,但由于二氧化碳的成本低,来源广,目前国内外仍广为使用。这种灭火器是将二氧化碳气体压缩成液体,贮存于灭火器的高压钢瓶内。使用时,打开阀门,二氧化碳气体和雪片状的固体(俗称干冰)即从喷筒喷出,使燃烧物温度降低,并隔绝空气或降低空气中的含碳量,而使燃烧停止。 (Continued) Carbon Dioxide Fire Extinguisher I. Portable Carbon Dioxide Fire Extinguisher 1. Uses: It can extinguish oil fires, flammable liquids, electrical equipment, cultural relics and other fires, but can not extinguish light metal fires such as potassium, sodium and magnesium. Although its fire extinguishing efficiency is not as good as that of dry powder and “1211” fire extinguisher, it is still widely used at home and abroad because of its low cost and wide source. This fire extinguisher is compressed carbon dioxide gas into liquids, stored in high pressure cylinder fire extinguishers. Use, open the valve, carbon dioxide gas and snow-like solid (commonly known as dry ice) that is sprayed from the cylinder, the combustion temperature decreased, and cut off the air or reduce the carbon content of air, leaving the combustion stopped.