濕式報(bào)警閥的工作事項(xiàng)
來源：http://m.n3462.cn/ 日期：2023-05-27
濕式報(bào)警閥是一種只允許水流入濕式滅火系統(tǒng)的單向閥，在規(guī)定壓力、流量下驅(qū)動(dòng)配套部件報(bào)警,?；馂?zāi)發(fā)生時(shí)，閉式噴頭探測(cè)火災(zāi),，受熱開啟滅火,；水流經(jīng)過濕式報(bào)警閥組，濕式報(bào)警閥啟動(dòng),，經(jīng)過延遲器延時(shí)后,，水力警鈴和壓力開關(guān)動(dòng)作；壓力開關(guān)連鎖消防水泵啟動(dòng),，同時(shí)向控制中心發(fā)出報(bào)警信號(hào),。
Wet alarm valve is a one-way valve that only allows water to flow into the wet fire extinguishing system, and drives the supporting components to alarm under the specified pressure and flow rate. When a fire occurs, the closed nozzle detects the fire and starts to extinguish it when heated; The water flows through the wet alarm valve group, and the wet alarm valve is activated. After the delay of the delay device, the hydraulic alarm bell and pressure switch act; The pressure switch interlocks the fire water pump and sends an alarm signal to the control center.
1、
川消濕式報(bào)警閥組由閥體,、延遲器,、水力警鈴、壓力開關(guān),、排水閥,、過濾器、泄水孔,、供水側(cè)壓力表,、系統(tǒng)側(cè)壓力表等組成。閥體被座圈和閥瓣分成上,、下兩腔,，上腔(系統(tǒng)側(cè))與系統(tǒng)管網(wǎng)相通，下腔(供水側(cè))與水源相通,。座圈上有多個(gè)溝槽小孔,，溝槽小孔與報(bào)警水道相通。準(zhǔn)工作狀態(tài)時(shí),，溝槽小孔被閥瓣封閉,，水流不能進(jìn)入報(bào)警水道。閥體上設(shè)有補(bǔ)償器(類似小孔單向閥),，當(dāng)系統(tǒng)側(cè)管網(wǎng)有微小滲漏或水源壓力有波動(dòng)時(shí),，可以通過補(bǔ)償器平衡閥體的上下腔壓力，避免誤報(bào)警,。
1. The Chuanxiao wet alarm valve group is composed of a valve body, a delay device, a hydraulic alarm bell, a pressure switch, a drainage valve, a filter, a drain hole, a water supply side pressure gauge, a system side pressure gauge, etc. The valve body is divided into upper and lower chambers by the seat ring and valve disc. The upper chamber (system side) is connected to the system pipe network, and the lower chamber (water supply side) is connected to the water source. There are multiple grooves and small holes on the seat ring, which are connected to the alarm water channel. When in a quasi working state, the small hole in the groove is closed by the valve disc, and water cannot enter the alarm channel. There is a compensator (similar to a small hole one-way valve) on the valve body, which can balance the pressure of the upper and lower chambers of the valve body through the compensator when there is slight leakage in the system side pipeline network or fluctuations in water source pressure, to avoid false alarms.
2,、當(dāng)灑水噴頭開放時(shí)，報(bào)警閥的系統(tǒng)側(cè)壓力降低,，水流推動(dòng)閥瓣開啟,，進(jìn)入系統(tǒng)側(cè)管網(wǎng),。同時(shí)，水流經(jīng)溝槽小孔進(jìn)入報(bào)警水道,，少部份水流通過泄水孔排放,，大部分水流進(jìn)入延遲器。當(dāng)延遲器蓄滿以后,，水流推動(dòng)水力警鈴報(bào)警,，同時(shí)壓力開關(guān)輸出開關(guān)觸點(diǎn)信號(hào),，連鎖消防水泵,。
2. When the sprinkler head is open, the system side pressure of the alarm valve decreases, and the water flow pushes the valve disc open, entering the system side pipe network. At the same time, the water flows into the alarm channel through the small holes in the groove, with a small portion of the water discharged through the drain hole, and the majority of the water flowing into the delay device. When the delay device is fully charged, the water flow pushes the hydraulic alarm bell to alarm, and at the same time, the pressure switch outputs a switch contact signal to interlock the fire water pump.
注：延遲器可以進(jìn)一步防止水流波動(dòng)引起的誤動(dòng)作，閥瓣誤動(dòng)以后,，會(huì)自動(dòng)復(fù)位,，在延遲器蓄滿以前，水可以經(jīng)泄水孔放空,。
Note: The delay device can further prevent misoperation caused by water flow fluctuations. After misoperation of the valve disc, it will automatically reset. Before the delay device is fully charged, the water can be discharged through the drain hole.
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