自动喷水灭火系统的分类与适用场景

来源：http://www.cx-fire.com/ 日期：2026-06-15

自动喷水灭火系统并非千篇一律，根据喷头的型式和管网内的介质，主要分为闭式系统和开式系统两大类。闭式系统包括湿式、干式和预作用系统等，而开式系统则主要包括雨淋系统和水幕系统。不同的系统类型针对着截然不同的环境需求和火灾风险等级。

Automatic sprinkler fire extinguishing systems are not uniform, and are mainly divided into two categories based on the type of nozzle and the medium in the pipeline network: closed systems and open systems. Closed systems include wet, dry, and pre action systems, while open systems mainly include rain shower systems and water curtain systems. Different system types target vastly different environmental requirements and fire risk levels.

湿式系统因其结构简单、灭火速度快且经济可靠，占据了全球已安装系统总量的70%以上。但它对环境温度有严格要求，仅适用于环境温度不低于4℃且不高于70℃的场所。对于环境温度低于4℃或高于70℃的特殊区域（如不采暖的地下车库、冷库等），则需要采用干式系统。干式系统的管网内平时充满有压气体，喷头动作后需先排气再出水，虽然灭火速度略有滞后，但能有效避免管道冻结或水汽化的危险。

Wet systems account for over 70% of the total installed systems worldwide due to their simple structure, fast fire extinguishing speed, and economic reliability. But it has strict requirements for ambient temperature and is only applicable to places where the ambient temperature is not lower than 4 ℃ and not higher than 70 ℃. For special areas with ambient temperatures below 4 ℃ or above 70 ℃ (such as unheated underground garages, cold storage, etc.), a dry system is required. The pipeline network of a dry system is usually filled with pressurized gas, and after the nozzle is activated, it needs to exhaust before discharging water. Although the fire extinguishing speed is slightly delayed, it can effectively avoid the danger of pipeline freezing or water vaporization.

此外，对于严禁系统误喷或严禁管道漏水的敏感场所（如高级档案室、精密仪器房），预作用系统是最佳选择。它结合了火灾自动报警系统与闭式喷头的双重探测机制，只有在火灾报警系统确认火情后，才会向管网内充水转换为湿式系统，从而极大降低了误启动的风险。而在严重危险级场所，雨淋系统则能通过开式喷头大面积同时喷水，提供极其强悍的火灾抑制效果。合理选型是保障消防安全的第一步。

In addition, for sensitive areas where system misoperation or pipeline leakage is strictly prohibited (such as advanced archives and precision instrument rooms), pre action systems are the best choice. It combines the dual detection mechanism of automatic fire alarm system and closed nozzle. Only after the fire alarm system confirms the fire situation, will it fill the pipeline with water and switch to a wet system, greatly reducing the risk of false start. In severely hazardous areas, the rain shower system can simultaneously spray water over a large area through open nozzles, providing extremely powerful fire suppression effects. Reasonable selection is the first step in ensuring fire safety.

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