报警阀安装在自动喷水灭火系统的主水管上，装有湿式报警阀，用于连接供水设备和配水管网。一般采用止回阀（只允许一个方向的水流流入喷水管网），防止管网中的水倒流回水池。当头部喷水破坏阀门的压力平衡时，阀板打开，给配水管网供水。它是一种单向阀，其出口侧充满压缩气体，当气压低于一定值时，可使水自动流入喷水系统并报警。

The alarm valve is installed on the main water pipe of the automatic sprinkler system and is equipped with a wet alarm valve to connect the water supply equipment and the water distribution network. Generally, check valves (only one direction of water flow is allowed to flow into the sprinkler pipe network) are used to prevent the water in the pipe network from flowing back to the pool. When the head spray water destroys the pressure balance of the valve, the valve plate is opened to supply water to the water distribution network. It is a one-way valve. Its outlet side is full of compressed gas. When the air pressure is lower than a certain value, the water can automatically flow into the sprinkler system and give an alarm.

(1)自动喷水灭火系统应配备报警阀组。保护室内钢屋架和其他建筑构件的封闭系统应设置独立的报警阀组。水幕系统应配备独立的报警阀组或感温雨淋阀。

(1) The sprinkler system shall be equipped with an alarm valve block. The closed system protecting indoor steel roof truss and other building components shall be provided with independent alarm valve groups. The water curtain system shall be equipped with independent alarm valve group or temperature sensing deluge valve.

(2)与湿式系统配水总管串联的其他自动喷水系统，应分别设置独立的报警阀组，其控制的喷水器数量应计入由其控制的喷水器总数中。湿阀组。

(2) Other automatic sprinkler systems connected in series with the water distribution header of the wet system shall be provided with independent alarm valve groups, and the number of sprinklers controlled by them shall be included in the total number of sprinklers controlled by them. Wet manifold.

(3)川消小编认为报警阀组控制的喷嘴数量应符合下列要求：

(3) Sichuan Xiaobian believes that the number of nozzles controlled by the alarm valve group should meet the following requirements:

湿式系统和预作用系统不应超过800；干式系统不应超过500。

Wet system and pre action system shall not exceed 800; Dry systems shall not exceed 500.

配水支管安装洒水器保护吊顶上下空间时，报警阀组控制的洒水器总数应仅计入数量较大一侧的洒水器。

When sprinkler is installed on the water distribution branch pipe to protect the upper and lower space of the ceiling, the total number of sprinklers controlled by the alarm valve group shall only be included in the sprinklers on the side with a larger number.

(4)各报警阀组供水的高低位喷嘴高度差不应大于50m。

(4) The height difference between high and low nozzles for water supply of each alarm valve group shall not be greater than 50m.

(5)雨淋阀组的电磁阀入口处应有过滤器。对于雨淋阀组并联布置的雨淋系统，雨淋阀控制室的入口应设置止回阀。

(5) There shall be a filter at the inlet of the solenoid valve of the deluge valve group. For the deluge system with deluge valve groups arranged in parallel, the inlet of the deluge valve control room shall be provided with a check valve.

(6)报警阀组应设在、便于操作的位置，报警阀离地高度应为1.2m。安装报警阀的部位应设置排水设施。

(6) The alarm valve group shall be set at a safe and easy to operate position, and the height of the alarm valve from the ground shall be 1.2m. Drainage facilities shall be set at the position where the alarm valve is installed.

(7)连接报警阀进出口的控制阀应为信号阀。不使用信号阀时，控制阀应设有锁紧阀位。

(7) The control valve connecting the inlet and outlet of alarm valve shall be signal valve. When the signal valve is not used, the control valve shall be provided with a locking valve position.

(8)液压警铃的工作压力不应小于0.05MPa，并应满足下列要求：

(8) The working pressure of the hydraulic alarm bell shall not be less than 0.05Mpa and shall meet the following requirements:

应位于有人值守地点附近。

It shall be located near the attended place.

与报警阀连接的管道直径应为20mm，总长不应大于20m。

The diameter of the pipeline connected with the alarm valve shall be 20mm, and the total length shall not be greater than 20m.

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