干式报警阀是干式自动喷水灭火系统的重要组成部分，它是系统控制阀，用于接通或切断供水，输出报警水流。平时处于常闭状态，失火时自动开启，是常见的消防器材。下面川消小编来为您讲解有关事项：

The dry alarm valve is an important component of the dry automatic sprinkler system, which is a system control valve used to connect or cut off water supply and output alarm water flow. Normally in a normally closed state and automatically opens in case of fire, it is a common firefighting equipment. Below, the editor of Chuanxiao will explain the relevant matters to you:

信号闸阀

Signal gate valve

信号闸阀的启闭件是闸板，闸板的运动方向与流体方向相垂直，闸阀只能作全开和全关,不能作调节和节流。

The opening and closing component of the signal gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.

信号闸阀在特制手动闸阀的基础上加设电信号装置而成，阀门除了按标准设计制造外，并按此阀在自动喷水灭火系统中安装及使用特点，采用不锈钢精磨阀杆及便于维护的特种盘根密封，并增设了独特的O型圈阀杆上密封(倒密封)结构，能确保阀门长期处于常开状态下，阀杆不渗漏，有利于吊顶中安装使用。

The signal gate valve is made by adding an electrical signal device on the basis of a specially designed manual gate valve. In addition to being designed and manufactured according to national standards, the valve is also installed and used in automatic sprinkler systems according to the characteristics of this valve. It adopts stainless steel precision grinding valve stems and special packing seals that are easy to maintain, and a unique O-ring valve stem upper sealing (reverse sealing) structure is added to ensure that the valve is in a normally open state for a long time without leakage of the valve stem, It is beneficial for installation and use in suspended ceilings.

信号闸阀工作原理：电信号装置为全封闭精密机电盒式结构，盒内采用不锈机件及进口电气元件，装置设于操作手轮下方不易被碰撞的阀体压盖上。内设微动开关及其推动机构，以齿轮与固定在阀杆上的齿轮啮合传动，当转动手轮启闭闸阀的同时，信号装置便输出对应闸阀启闭位置的“通”、“断”电信号。

Working principle of signal gate valve: The electrical signal device is a fully enclosed precision electromechanical box structure, with stainless components and imported electrical components inside the box. The device is located on the valve body gland that is not easily collided under the operating handwheel. Equipped with a micro switch and its pushing mechanism, the gear is meshed with the gear fixed on the valve stem for transmission. When the handwheel is turned to open and close the gate valve, the signal device outputs the "on" and "off" electrical signals corresponding to the opening and closing positions of the gate valve.

信号蝶阀

Signal butterfly valve

信号蝶阀一般安装在两个部位：楼层水平干管水流指示器前端；主干管湿式报警阀前端。

The signal butterfly valve is generally installed in two parts: the front end of the water flow indicator for the horizontal main pipe on the floor; Front end of wet alarm valve for main pipe.

楼层水平干管安装信号蝶阀的作用，一是当楼层喷啉系统需要维修时，关闭此阀，打开末端放水，放空本楼层喷淋系统内的水，进行维修；二是喷淋系统内是不允许无水的，当这个蝶关闭时，会传输一个信号给消防报警系统，消防报警系统接收一个监视信号（所以叫信号蝶阀），提示这个楼层的消防喷淋系统是无水状态，应快速维修。

The function of installing a signal butterfly valve on the horizontal main pipe of the floor is to close this valve when the floor spray system needs maintenance, open the end drain, and empty the water in the spray system of the floor for maintenance; The second is that there is no water in the sprinkler system. When this butterfly is closed, it will transmit a signal to the fire alarm system. The fire alarm system receives a monitoring signal (hence the signal butterfly valve), indicating that the fire sprinkler system on this floor is in a water free state and should be repaired quickly.

湿式报警阀前端的信号蝶阀作用与楼层主干管蝶阀的作用差不多，一是维修，二是提示喷淋系统内有信号蝶阀关闭，应尽早维修。更多相关事项就来我们网站http://www.cx-fire.com咨询！

The signal butterfly valve at the front end of the wet alarm valve has a similar function as the main pipe butterfly valve on the floor. It is used for maintenance and reminds the sprinkler system that there is a signal butterfly valve closed, which should be repaired as soon as possible. For more related matters, come to our website http://www.cx-fire.com consulting service