细水雾特别是高压细水雾目前使用已经较为广泛，但很多朋友会误以为水喷雾灭火系统也就是高压细水雾，其实两者还是有很大区别的。下面就由川消小编来为大家分析一番。

Water mist, especially high-pressure water mist, has been widely used at present, but many friends will mistakenly think that water spray fire extinguishing system is also high-pressure water mist. In fact, there is a great difference between the two. Now let's have a brief analysis by Sichuan Xiaobian.

雾粒直径的区别

Difference of fog particle diameter

水喷雾：水雾喷头的雾滴体积百分比特征直径DV0.90，应小于1mm。也就是说，喷雾液体总体积中，在该直径以下雾滴所占体积的百分比不小于90%。

Water spray: the characteristic diameter of droplet volume percentage of water spray nozzle dv0.90 shall be less than 1mm. That is, in the total volume of spray liquid, the percentage of droplets below this diameter in the volume shall not be less than 90%.

细水雾：细水雾系统中经喷头喷出并在喷头轴线向下1m处的平面上形成的雾滴直径Dv0.50小于200μm、Dv0.99小于400μm的水雾滴。也就是说，在这个平面上，有99%的雾滴直径小于400μm,有50%的雾滴直径小于200μm。

Water mist: in the water mist system, the droplet diameter dv0.50 is less than 200, which is sprayed through the nozzle and formed on the plane 1m downward from the nozzle axis μ m. Dv0.99 less than 400 μ M. In other words, 99% of the droplets on this plane have a diameter less than 400 μ m. 50% of the droplet diameter is less than 200 μ m。

总结一句话来说就是：“细水雾直径比水喷雾的小，用水量更少，带来的水渍损失小。”

In a word, "the diameter of water mist is smaller than that of water spray, with less water consumption and less water loss."

系统组件的区别

Differences in system components

水喷雾：水喷雾采用的是离心泵和水雾喷头，系统对水质要求也不高，只需要在雨淋阀前安装过滤器，管道也可以采用热镀锌钢管。而且水喷雾各部分彼此独立，可以不需要同一家厂家提供。不同组件的故障问题不同，后期维修起来很麻烦，且成本高。

Water spray: centrifugal pump and water spray nozzle are used for water spray. The system does not have high requirements for water quality. Only filters need to be installed in front of the deluge valve, and hot-dip galvanized steel pipes can also be used for pipes. Moreover, each part of the water spray is independent of each other, so it does not need to be provided by the same manufacturer. Different components have different fault problems. It is troublesome and costly to repair later.

细水雾：细水雾采用的是柱塞泵，因对水质要求高，还需使用不锈钢水箱和管道。列如：这次变电站安装细水雾系统的管道及阀门均采用不锈钢无缝钢管，使用寿命长达60年，管道连接方式为氩弧焊接，利于后期变压器维护检修时，方便拆卸细水雾管道。且细水雾灭火系统组件是成套是有3C认证的，由厂家成套提供。后期维修很方便。

Water mist: the plunger pump is used for water mist. Due to the high requirements for water quality, stainless steel water tank and pipeline are also required. For example, the pipelines and valves of the water mist system installed in the substation this time adopt stainless steel seamless steel pipes, with a service life of up to 60 years. The pipeline connection method is argon arc welding, which is conducive to the disassembly of the water mist pipeline during the later maintenance and repair of the transformer. In addition, the water mist fire extinguishing system components are complete sets with 3C certification and provided by the manufacturer in complete sets. It is very convenient for later maintenance.

应用场所的区别

Differences between application sites

水喷雾：水喷雾水微粒直径比较大，受气流影响会比较小，因此可以应用在室外的场所。

Water spray: water spray has a large diameter of water particles and is less affected by air flow, so it can be used in outdoor places.

细水雾：水微粒直径小，比较容易受气流的影响因此不适用于室外场所。

Water mist: the diameter of water particles is small, which is easily affected by air flow, so it is not suitable for outdoor places.

灭火种类的区别

Difference of fire extinguishing types

水喷雾灭火系统可用于扑救固体物质火灾、丙类液体火灾、饮料酒火灾和电气火灾，并可用于可燃气体和甲、乙、丙类液体的生产、储存装置或装卸设施的防护冷却。水喷雾灭火系统不得用于扑救遇水能发生化学反应造成燃烧、爆炸的火灾，以及水雾会对保护对象造成明显损害的火灾。

The water spray fire extinguishing system can be used to extinguish solid substance fires, class C liquid fires, beverage fires and electrical fires, and can be used for protective cooling of production, storage devices or loading and unloading facilities of combustible gases and class A, B and C liquids. The water spray fire extinguishing system shall not be used to extinguish fires that can cause combustion and explosion due to chemical reaction in the presence of water, and fires in which the water mist will cause obvious damage to the protected objects.

川消细水雾灭火系统适用于扑救相对封闭空间内的可燃固体表面火灾、可燃液体火灾和带电设备的火灾。细水雾灭火系统不适用于扑救可燃固体的深位火灾；能与水发生剧烈反应或产生大量有害物质的活泼金属及其化合物的火灾；可燃气体火灾。

Chuanxiao water mist fire extinguishing system is applicable to extinguishing the fire of combustible solid surface, combustible liquid and electrified equipment in relatively closed spaces. The water mist fire extinguishing system is not suitable for extinguishing the deep fire of combustible solids; Fire of active metals and their compounds that can react violently with water or produce a large number of harmful substances; Combustible gas fire.

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