二氧化碳气体灭火后没有残留物，不会对保护物品造成损伤，不会破坏大气臭氧层，而且它的来源广泛、低廉，广泛应用于档案等珍贵资料房、变配电室等封闭空间的保护。按照储存压力，可以分为高压二氧化碳灭火系统和低压二氧化碳灭火系统。下面来简单了解下两者的区别吧。

Carbon dioxide gas has no residue after fire extinguishing, will not cause damage to protective articles, and will not destroy the atmospheric ozone layer. Moreover, it has a wide range of sources and low prices, and is widely used for the protection of precious reference rooms such as archives, power transformation and distribution rooms and other enclosed spaces. According to the storage pressure, it can be divided into high-pressure carbon dioxide fire extinguishing system and low-pressure carbon dioxide fire extinguishing system. Let's briefly understand the difference between the two.

高压二氧化碳灭火系统储存压力为5.7Mpa,工作温度范围为0～50℃，灭火剂储存容积为70L，既能用于全淹没保护又能用于局部淹没保护。高压系统的二氧化碳灭火剂储存无需配置制冷保温系统，没有日常运行能耗，管理方便、维修也比较简单;较高的储存压力使得灭火剂有较大的输送距离，有效提高了系统的保护范围。

The storage pressure of the high-pressure carbon dioxide fire extinguishing system is 5.7mpa, the working temperature range is 0 ~ 50 ℃, and the storage volume of the extinguishing agent is 70L, which can be used for both full flooding protection and local flooding protection. The storage of carbon dioxide extinguishing agent in the high-pressure system does not need to be equipped with a refrigeration and insulation system, so there is no daily operation energy consumption, convenient management and simple maintenance; The higher storage pressure makes the fire extinguishing agent have a larger transmission distance, which effectively improves the protection range of the system.

低压二氧化碳灭火系统储存压力为2.1Mpa,工作温度范围为-20～-18℃，一般只用于全淹没保护。低压系统虽然能储存大量灭火剂,但储存需要配置制冷保温系统，有日常运行能耗，管理不便、维护复杂。

The storage pressure of low-pressure carbon dioxide fire extinguishing system is 2.1MPa, and the working temperature range is -20 ~ -18 ℃. Generally, it is only used for total flooding protection. Although the low-pressure system can store a large amount of extinguishing agent, it needs to be equipped with refrigeration and insulation system for storage, which has daily operation energy consumption, inconvenient management and complex maintenance.

此外高压二氧化碳灭火系统灭火原理为窒息灭火，并有少量的冷却降温作用。与其他气体灭火系统相比，高压二氧化碳灭火系统不仅能进行全淹没灭火应用方式灭火，还能进行局部应用灭火设计，应用灵活，对于像轧机、印刷机、烘干设备、汽车厂喷漆生产线等容易失火的局部部位进行保护。

In addition, the fire extinguishing principle of the high-pressure carbon dioxide fire extinguishing system is asphyxiation and has a small amount of cooling effect. Compared with other gas fire-extinguishing systems, the high-pressure carbon dioxide fire-extinguishing system can not only extinguish the fire by means of total flooding, but also carry out local application fire-extinguishing design. It can be applied flexibly to protect local parts prone to fire, such as rolling mills, printing presses, drying equipment, automobile factory paint production lines, etc.

川消高压二氧化碳灭火系统有自动启动、人工电气启动、紧急停止和机械应急手动操作四种启动方式，当应用于有人值守的场所时可不设置自动启动。自动启动将气体灭火报警控制器上的控制方式选择键拨到“自动”位置时，灭火系统处于自动控制状态。

Chuanxiao high pressure carbon dioxide fire extinguishing system has four startup modes: automatic startup, manual electrical startup, emergency stop and mechanical emergency manual operation. When it is used in attended places, automatic startup may not be set. Automatic startup when the control mode selection key on the gas fire extinguishing alarm controller is turned to the "automatic" position, the fire extinguishing system is in the automatic control state.

当防护区发生火情，火灾探测器发出火灾信号，火灾报警控制器即发出声、光报警信号，同时发出联动指令，关闭连锁设备，经过一定延时时间(0～30秒可调，此时间内防护区人员必须全部撤离)，控制器向灭火设备发出灭火指令。

When a fire occurs in the protection area, the fire detector will send a fire signal, and the fire alarm controller will send an audible and visual alarm signal. At the same time, it will send a linkage command to close the interlocking equipment. After a certain delay time (0 ~ 30 seconds can be adjusted, and all personnel in the protection area must evacuate within this time), the controller will send a fire-fighting command to the fire-fighting equipment.

电磁型驱动装置动作打开驱动气体瓶组容器阀释放驱动气体，驱动气体顺序打开相应的选择阀和灭火剂瓶组容器阀，释放灭火剂，实施灭火。

The electromagnetic driving device acts to open the container valve of the driving gas cylinder group to release the driving gas. The driving gas sequentially opens the corresponding selector valve and the container valve of the extinguishing agent cylinder group to release the extinguishing agent and put out the fire.

人工电气启动将气体灭火报警控制器上的控制方式选择键拨到“手动”位置时，灭火系统处于人工电气控制状态。

Manual electrical startup when the control mode selection key on the gas fire extinguishing alarm controller is turned to the "manual" position, the fire extinguishing system is in the manual electrical control state.

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