高压细水雾喷头根据不同的应用场所，可分为开式喷头、闭式喷头、高大空间专用喷头、超细水雾喷头等100多种不同应用的高压细水雾喷头。那么为什么闭式的细水雾喷头应用较少？下面川消小编为您解答吧。

High pressure water mist sprayers can be divided into more than 100 types of high pressure water mist sprayers with different applications, such as open type sprayers, closed type sprayers, special sprayers for large and large spaces, ultra-fine water mist sprayers, etc. So why are closed water mist nozzles seldom used? Now let's answer it for you.

其中应用较多的应该是开式喷头，因为开式喷头不带感温、闭锁装置，处于常开状态。火灾发生时，区域内的所有开式喷头开始出水灭火。而闭式喷头之所以应用较少，原因是它是一种常闭喷头，喷头的感温、闭锁装置只有在预定的温度环境下，才会爆破，开启喷头。所以火灾发生时，闭式喷头只有身处于火焰之中，或临近火源时，才会开启出水灭火。

Among them, open type nozzles are widely used because they are normally open without temperature sensing and locking devices. When a fire occurs, all open sprinklers in the area begin to extinguish the fire. The reason why the closed sprinkler is seldom used is that it is a normally closed sprinkler. The temperature sensing and locking devices of the sprinkler will burst and open the sprinkler only under the predetermined temperature environment. Therefore, when a fire occurs, the closed sprinkler willonly open the water to extinguish the fire when it is in the flame or near the fire source.

另外，闭式喷头的可靠性不高，受到外力可能会破碎，造成误喷射，所以只能设置在一些对水不敏感的部位；还有闭式喷头只要一爆破，用过一次后就不能再重复使用，因此费用方面也要考虑进去。所以，闭式喷头只适用于闭式系统。

In addition, the reliability of the closed sprinkler is not high, which may be broken by external forces, resulting in spurting by mistake, so it can only be set in some parts that are not sensitive to water; Also, once the closed sprinkler is blasted, it cannot be reused after being used once, so the cost should also be taken into account. Therefore, the closed sprinkler is only applicable to the closed system.

此外闭式系统的喷头布置应能保证细水雾喷放均匀并完全覆盖保护区域；喷头与墙壁的距离不应大于喷头大布置间距的1/2；喷头与其他遮挡物的距离应保证遮挡物不影响喷头正常喷放细水雾，当无法避免时，应采取补偿措施；喷头的感温组件与顶棚或梁底的距离不宜小于75mm，且不宜大于150mm。当场所内设置吊顶时，喷头可贴邻吊顶布置。

In addition, the sprinkler arrangement of the closed system shall ensure that the water mist can be sprayed evenly and completely cover the protected area; The distance between the sprinkler and the wall shall not be greater than 1/2 of the large spacing of the sprinkler; The distance between the nozzle and other obstructions shall ensure that the obstructions will not affect the normal spraying of fine water mist by the nozzle. If it is unavoidable, compensation measures shall be taken; The distance between the temperature sensing component of the sprinkler and the ceiling or beam bottom should not be less than 75mm, and should not be more than 150mm. When the ceiling is set in the station, the sprinkler can be arranged next to the ceiling.

闭式喷头密封性能试验，随机从每批到场喷头中抽取1%，且不少于5只作为试验喷头。当1只喷头试验不合格时，再抽取2%，且不少于10只的到场喷头进行重复试验。更多相关内容就来我们网站http://www.cx-fire.com进行咨询吧！

For the sealing performance test of closed sprinklers, 1% of the sprinklers in each batch shall be selected randomly, and no less than 5 sprinklers shall be used as test sprinklers. When one nozzle fails to pass the test, another 2% and no less than 10 nozzles shall be sampled to repeat the test. More relevant content will come to our website http://www.cx-fire.com Consult!