干式報警閥是干式自動噴水滅火系統的重要組成部分，它是系統控制閥，用于接通或切斷供水，輸出報警水流。平時處于常閉狀態，失火時自動開啟，是常見的消防器材。下面川消小編來為您講解有關事項：

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:

信號閘閥

Signal gate valve

信號閘閥的啟閉件是閘板，閘板的運動方向與流體方向相垂直，閘閥只能作全開和全關,不能作調節和節流。

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.

信號閘閥在特制手動閘閥的基礎上加設電信號裝置而成，閥門除了按標準設計制造外，并按此閥在自動噴水滅火系統中安裝及使用特點，采用不銹鋼精磨閥桿及便于維護的特種盤根密封，并增設了獨特的O型圈閥桿上密封(倒密封)結構，能確保閥門長期處于常開狀態下，閥桿不滲漏，有利于吊頂中安裝使用。

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.

信號閘閥工作原理：電信號裝置為全封閉精密機電盒式結構，盒內采用不銹機件及進口電氣元件，裝置設于操作手輪下方不易被碰撞的閥體壓蓋上。內設微動開關及其推動機構，以齒輪與固定在閥桿上的齒輪嚙合傳動，當轉動手輪啟閉閘閥的同時，信號裝置便輸出對應閘閥啟閉位置的“通”、“斷”電信號。

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.

信號蝶閥

Signal butterfly valve

信號蝶閥一般安裝在兩個部位：樓層水平干管水流指示器前端；主干管濕式報警閥前端。

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.

樓層水平干管安裝信號蝶閥的作用，一是當樓層噴啉系統需要維修時，關閉此閥，打開末端放水，放空本樓層噴淋系統內的水，進行維修；二是噴淋系統內是不允許無水的，當這個蝶關閉時，會傳輸一個信號給消防報警系統，消防報警系統接收一個監視信號（所以叫信號蝶閥），提示這個樓層的消防噴淋系統是無水狀態，應快速維修。

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.

濕式報警閥前端的信號蝶閥作用與樓層主干管蝶閥的作用差不多，一是維修，二是提示噴淋系統內有信號蝶閥關閉，應盡早維修。更多相關事項就來我們網站http://www.xintli.net咨詢！

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.xintli.net consulting service