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-operating state (alert state), the water distribution pipeline (system side pipe network) after the alarm valve is filled with gas at a certain pressure. In case of a small amount of leakage, the air pressure maintaining device supplements the pressure through the orifice 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，结合川消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 should be determined according to the water source pressure before the inlet of the dry alarm valve and the working performance of the Chuanxiao dry alarm valve (the working differential ratio of the dry alarm valve group of 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 cavities by the valve disc. The upper cavity (system side) is connected to the system side pipe network filled with compressed gas, and the lower cavity (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-tight seal seat and the water-tight seal seat. The diameter of the gas-tight seal seat is larger than the diameter of the water-tight seal seat. The two seal seats are isolated by the middle chamber, which is connected with the alarm water channel and is connected with 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。

5. The area of the gas seal seat (the area above the valve disc) is larger than the area of the water seal seat (the area under the valve disc contacting with water). Only a small gas pressure on the system side can balance the high water pressure on the water supply side.

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-type alarm valve (prevent the binding of the moving parts) and better air tightness, it is usually necessary to fill the base at the system side with bottom water.

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 with the atmosphere through a small hole, and is used to discharge a small amount of water seepage in the middle chamber to prevent the system from misoperation. The drip valve automatically closes when the water flow increases.

9额定工作压力：

9 Rated working pressure:

⑴干式报警阀的额定工作压力应不低于1.2MPa。

(1) The rated working pressure of dry alarm valve shall not be less than 1.2MPa.

⑵干式报警阀与工作压力等级较低的设备配装使用时，允许将阀的进出口接头按承受较低压力等级加工，但在阀上须对额定工作压力做相应的标记。

(2) When the dry-type alarm valve is used with equipment with lower working pressure class, it is allowed to process the inlet and outlet joints of the valve according to the lower pressure class, but the rated working pressure must be marked on the valve.

10阀体上的泄水口公称直径≥20mm。

10. The nominal diameter of the water outlet on the valve body is ≥ 20mm.

11在阀体的供水侧应设有报警实验管路，其上阀门应处于常闭状态。

11 The water supply side of the valve body shall be equipped with an alarm test pipeline, and the valve on it shall be in the normally closed state.

报警阀组是自动喷水灭火系统的关键组件，要求使用闸阀时需有锁定装置，否则应使用信号阀代替闸阀。另外，干式系统和预作-用系统等，还需检验空气压缩机与控制阀、报警系统与控制阀的联动是否可靠。更多相关内容就来我们网站http://www.cx-fire.com进行咨询！

The alarm valve group is a key component of the automatic sprinkler system. It is required to have a locking device when using the gate valve. Otherwise, the signal valve should be used instead of the gate valve. In addition, the linkage between the air compressor and the control valve, the alarm system and the control valve should also be checked for reliability in the dry-type system and the pre-operation system. Come to our website for more relevant content http://www.cx-fire.com Consult!