干式報(bào)警閥的動(dòng)作原理以及設(shè)置要求
來(lái)源：http://m.n3462.cn/ 日期：2023-07-03
干式報(bào)警閥的動(dòng)作原理：（以差動(dòng)比為5：1的干式報(bào)警閥為例）
The operating principle of the dry alarm valve: (Taking the dry alarm valve with a differential ratio of 5:1 as an example)
火災(zāi)發(fā)生時(shí),，噴頭開(kāi)啟,，節(jié)流孔的補(bǔ)氣速度遠(yuǎn)小于噴頭噴放速度，系統(tǒng)側(cè)管網(wǎng)氣壓迅速降低,，當(dāng)氣壓降到供水側(cè)水壓的五分之一以下時(shí),，閥瓣上、下腔的平衡被破壞,，干式閥開(kāi)啟,，水流進(jìn)入系統(tǒng)側(cè)管網(wǎng)。
When a fire occurs, the nozzle opens, and the air supply speed of the throttle hole is much lower than the nozzle's discharge speed. The air pressure in the system side pipe network rapidly decreases. When the air pressure drops to less than one-fifth of the water pressure on the supply side, the balance between the upper and lower cavities of the valve disc is disrupted, and the dry valve opens, allowing water to enter the system side pipe network.
干式閥開(kāi)啟后,，水流從中間室流向報(bào)警水道,，驅(qū)動(dòng)水力警鈴和壓力開(kāi)關(guān)動(dòng)作，同時(shí)滴水閥在水壓的作用下自動(dòng)關(guān)閉,。
After the dry valve is opened, water flows from the middle chamber to the alarm channel, driving the hydraulic alarm bell and pressure switch to operate. At the same time, the drip valve automatically closes under the action of water pressure.
壓力開(kāi)關(guān)連鎖啟動(dòng)消防水泵和電動(dòng)閥,，快速排氣閥排氣，加速管網(wǎng)充水,。
The pressure switch interlocks to start the fire water pump and electric valve, and the fast exhaust valve exhausts the air, accelerating the water filling of the pipeline network.
Requirements for the setting of Chuanxiao dry alarm valve:
1在準(zhǔn)工作狀態(tài)（警戒狀態(tài)）時(shí),，報(bào)警閥以后的配水管道（系統(tǒng)側(cè)管網(wǎng)）充有一定壓力的氣體，當(dāng)出現(xiàn)少量的泄漏時(shí),，氣壓維持裝置通過(guò)節(jié)流孔補(bǔ)壓，維持管網(wǎng)壓力,。
When in the quasi working state (alert state), the water distribution pipeline (system side pipe network) after the alarm valve is filled with a certain pressure of gas. When a small amount of leakage occurs, the pressure maintaining device compensates through the throttle hole to maintain the pressure of the pipe network.
2系統(tǒng)側(cè)管網(wǎng)的氣壓值,，需要根據(jù)干式報(bào)警閥入口前的水源壓力，結(jié)合干式報(bào)警閥的工作性能確定（不同廠家的干式報(bào)警閥組,，工作差動(dòng)比有所區(qū)別）
The air pressure value of the 2 system side pipeline network needs to be determined based on the water source pressure before the inlet of the dry alarm valve, combined with the working performance of the dry alarm valve (different manufacturers' dry alarm valve groups have different working differential ratios)
3報(bào)警閥的閥體被閥瓣分成上,、下兩腔，上腔（系統(tǒng)側(cè)）連接充有壓縮氣體的系統(tǒng)側(cè)管網(wǎng),，下腔（供水側(cè)）連接水源,。
The valve body of the 3 alarm valve is divided into upper and lower chambers by the valve disc. 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報(bào)警閥的閥瓣扣在氣密封座和水密封座上，其中氣密封座的直徑大于水密封座的直徑,，兩個(gè)密封座被中間室隔離,，中間室連通報(bào)警水道,，通過(guò)滴水閥與大氣相通。
The valve disc of the 4 alarm valve is buckled on the gas seal seat and water seal seat, with the diameter of the gas seal seat greater than the diameter of the water seal seat. The two seal seats are isolated by the middle chamber, which is connected to the alarm water channel and is connected to the atmosphere through a drip valve.
5氣密封座的面積（閥瓣上面面積）大于水密封座的面積（閥瓣下面接觸水的面積）,，系統(tǒng)側(cè)只需要較小的氣體壓力就能平衡供水側(cè)較高的水壓
The area of the 5 gas seal seat (above the valve disc) is greater than the area of the water seal seat (below the valve disc), and the system side only needs a smaller gas pressure to balance the higher water pressure on the water supply side
6為了干式報(bào)警閥的耐用程度（防止動(dòng)作部件粘結(jié)）和保證更好的氣密性,，通常需要在系統(tǒng)側(cè)底座加注底水
In order to ensure the durability of the dry alarm valve (preventing adhesion of the operating components) and better airtightness, it is usually necessary to add bottom water to the system side base
7為防止閥瓣組件在動(dòng)作以后重新回到其關(guān)閉位置上，干式報(bào)警閥應(yīng)設(shè)置有防復(fù)位鎖止機(jī)構(gòu),。
To prevent the valve disc assembly from returning to its closed position after action, the dry alarm valve should be equipped with an anti reset locking mechanism.
8干式報(bào)警閥的滴水閥,，通過(guò)小孔與大氣相通，用于排出中間室的少量滲水,，防止系統(tǒng)誤動(dòng),，滴水閥在水流加大時(shí)自動(dòng)關(guān)閉。
The drip valve of the 8 dry alarm valve is connected to the atmosphere through a small hole and is used to discharge a small amount of water seepage from the middle chamber to prevent system misoperation. The drip valve automatically closes when the water flow increases.
干式報(bào)警閥的動(dòng)作原理以及設(shè)置要求相關(guān)內(nèi)容就講解到這里了,，希望您看完能夠做好準(zhǔn)備工作,，避免操作不當(dāng)影響其使用，有需求就來(lái)聯(lián)系我們訂購(gòu)
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That's all for the explanation of the operation principle and setting requirements of the dry alarm valve. We hope you can prepare well after reading it to avoid improper operation affecting its use. If you have any needs, please contact us to order http://m.n3462.cn Come on!
