干式报警阀则由阀前水压和阀后管中的有压气体的压强引起。湿式报警阀有延时器，干式报警阀没有延时器。那么您知道干式报警阀的设置要求是怎样的吗？下面川消小编为您讲解。

The dry alarm valve is caused by the water pressure in front of the valve and the pressure of the pressurized gas in the pipe behind the valve. The wet alarm valve has a time delay, while the dry alarm valve has no time delay. Do you know the setting requirements of dry alarm valve? Now let's talk about it.

1、在准工作状态（警戒状态）时，报警阀以后的配水管道（系统侧管网）充有一定压力的气体，当出现少量的泄漏时，气压维持装置通过节流孔补压，维持管网压力。

1. In the quasi working state (alert state), the water distribution pipe (system side pipe network) behind the alarm valve is filled with gas of a certain pressure. In case of a small amount of leakage, the air pressure maintaining device will supplement the pressure through the throttle to maintain the pipe network pressure.

2、系统侧管网的气压值，需要根据干式报警阀入口前的水源压力，结合干式报警阀的工作性能确定（不同厂家的干式报警阀组，工作差动比有所区别）

2. The air pressure value of the pipe network at the system side shall be determined according to the water source pressure in front of the inlet of the dry alarm valve and the working performance of the dry alarm valve (the working differential ratio of dry alarm valve groups from different manufacturers is different)

3、报警阀的阀体被阀瓣分成上、下两腔，上腔（系统侧）连接充有压缩气体的系统侧管网，下腔（供水侧）连接水源。

3. The valve body of the alarm valve is divided into upper and lower chambers by the valve clack. The upper chamber (system side) is connected to the system side pipe network filled with compressed gas, and the lower chamber (water supply side) is connected to the water source.

4、报警阀的阀瓣扣在气密封座和水密封座上，其中气密封座的直径大于水密封座的直径，两个密封座被中间室隔离，中间室连通报警水道，通过滴水阀与大气相通。

4. The valve clack of the alarm valve is buckled on the gas seal seat and water seal seat. The diameter of the gas seal seat is larger than the diameter of the water seal seat. The two seal seats are isolated by the middle chamber, which is connected with the alarm channel and the atmosphere through the drip valve.

5、气密封座的面积（阀瓣上面面积）大于水密封座的面积（阀瓣下面接触水的面积），系统侧只需要较小的气体压力就能平衡供水侧较高的水压。比如：工作差动比为5：1的干式报警阀，表示系统侧只需要大于等于0.1MPa的气体压力就可以使供水侧水压为0.5MPa的阀瓣保持封闭状态

5. The area of the gas seal seat (the area above the valve clack) is larger than the area of the water seal seat (the area below the valve clack that contacts the water). Only a small gas pressure is required on the system side to balance the high water pressure on the water supply side. For example, the dry alarm valve with a working differential ratio of 5:1 means that the valve clack with a water pressure of 0.5MPa at the water supply side can be kept closed only if the gas pressure at the system side is greater than or equal to 0.1MPa

6、为了干式报警阀的耐用程度（防止动作部件粘结）和保证更好的气密性，通常需要在系统侧底座加注底水

6. In order to ensure the durability of the dry alarm valve (to prevent sticking of moving parts) and better air tightness, it is usually necessary to add bottom water at the base of the system side

7、为防止阀瓣组件在动作以后重新回到其关闭位置上，干式报警阀应设置有防复位锁止机构。

7. To prevent the disc assembly from returning to its closed position after action, the dry alarm valve shall be equipped with an anti reset locking mechanism.

8、干式报警阀的滴水阀，通过小孔与大气相通，用于排出中间室的少量渗水，防止系统误动，滴水阀在水流加大时自动关闭。

8. The drip valve of the dry-type alarm valve is connected to the atmosphere through a small hole to discharge a small amount of water seepage from the intermediate chamber to prevent the system from misoperation. The drip valve automatically closes when the water flow increases.

干式报警阀的设置要求包含八个内容，就是以上所讲解的了，您对此有什么理解可以来我们网站http://www.cx-fire.com联系分享，也可以来讲讲您的需求！

The setting requirements of dry alarm valve include eight contents, which are explained above. Please visit our website for your understanding http://www.cx-fire.com Contact and share, or talk about your needs!