川消提醒，二氧化碳滅火器使用不當會凍傷手！
來源：http://www.xintli.net/ 日期：2022-06-23
二氧化碳滅火器原理是在加壓時將液態二氧化碳壓縮在小鋼瓶中，滅火時再將其噴出，有降溫和隔絕空氣的作用。滅火器的區分不是根據瓶身的顏色，而是根據充裝的滅火劑進行區分。當然如果您在使用滅火器時操作不當，那就會有隱患發生。
The principle of the carbon dioxide fire extinguisher is to compress the liquid carbon dioxide into a small steel cylinder when pressurized, and then spray it out when extinguishing the fire. It has the effect of cooling and isolating air. The distinction of fire extinguishers is not based on the color of the bottle, but on the filled extinguishing agent. Of course, if you do not operate the fire extinguisher properly, there will be potential safety hazards.
二氧化碳滅火器使用不當會凍傷手嗎？會的，因為干冰(固態二氧化碳)在氣化的時候會大量吸熱，造成局部低溫。在常壓下，液態的二氧化碳會立即汽化，一般1kg的液態二氧化碳可產生約0.5立方米的氣體。
Will the hands be frostbitten if the carbon dioxide fire extinguisher is not used properly? Yes, because dry ice (solid carbon dioxide) will absorb a lot of heat during gasification, causing local low temperature. Under normal pressure, the liquid carbon dioxide will vaporize immediately. Generally, 1kg of liquid carbon dioxide can produce about 0.5m3 of gas.
因而，滅火時，二氧化碳氣體可以排除空氣而包圍在燃燒物體的表面或分布于較密閉的空間中，降低可燃物周圍或防護空間內的氧濃度，產生窒息作用而滅火。另外，二氧化碳從儲存容器中噴出時，會由液體迅速汽化成氣體，而從周圍吸收部分熱量，起到冷卻的作用。
Therefore, when extinguishing a fire, the carbon dioxide gas can remove the air and surround the surface of the burning object or distribute in a relatively closed space, reduce the oxygen concentration around the combustible or in the protective space, and produce asphyxiation to extinguish the fire. In addition, when carbon dioxide is ejected from the storage container, it will quickly vaporize from the liquid into gas, and absorb part of the heat from the surrounding area to play a cooling role.
正確使用方法是拔出保險銷,一手握住喇叭筒根部的手柄,一般是木質手柄,而另一只手緊握啟閉閥的壓把;對沒有噴射軟管的二氧化碳滅火器,應把喇叭筒往上板70-90度;那么還要注意,在使用時,不能直接用手抓住喇叭筒外壁或金屬連線管,以防止手被凍傷。
The correct use method is to pull out the safety pin, hold the handle at the root of the horn with one hand, which is generally a wooden handle, and hold the pressure handle of the opening and closing valve tightly with the other hand; For carbon dioxide fire extinguishers without spray hose, the horn shall be 70-90 degrees upward; It should also be noted that during use, do not directly grasp the external wall of the horn or the metal connecting pipe with your hands to prevent frostbite.
此外
川消提醒您，正常保存和使用滅火器可避免滅火器發生爆炸。如二氧化碳、鹵代烷、貯壓式干粉滅火器不存放在高溫的地方；使用過的滅火器嚴禁私自填裝，應及時送到具有維修資格的單位重新灌裝。
In addition, Chuanxiao reminds you that the normal storage and use of fire extinguishers can avoid the explosion of fire extinguishers. For example, carbon dioxide, halogenated alkanes and pressure storage dry powder fire extinguishers shall not be stored in high temperature places; Used fire extinguishers shall not be filled without permission. They shall be sent to units with maintenance qualification for refilling.
滅火器銹蝕嚴重或者筒體變形及達到報廢的年限時，不能再使用，應立即送維修單位處理；其次，嚴禁將滅火器做廢鐵賣出，對報廢的滅火器應按壓力容器的管理規定，在筒體上打孔后，交由單位處理；另外，在搬動滅火的過程中應輕拿輕放，以免發生碰撞變形引發爆炸。另外，滅火器是否超期服役、是否合格、存放環境是否等也是重要因素。
When the fire extinguisher is seriously rusted or the cylinder is deformed and reaches the scrap life, it can no longer be used, and it shall be immediately sent to the maintenance unit for treatment; Secondly, it is strictly prohibited to sell the fire extinguishers as scrap iron. The discarded fire extinguishers shall be drilled on the cylinder according to the management regulations of pressure vessels, and then handed over to professional units for disposal; In addition, handle with care in the process of moving and extinguishing the fire, so as to avoid collision, deformation and explosion. In addition, whether the fire extinguisher is out of service, qualified or not, and whether the storage environment is safe are also important safety factors.
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