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湿式报警阀的工作事项

来源:http://www.cx-fire.com/ 日期:2023-05-27

湿式报警阀是一种只允许水流入湿式灭火系统的单向阀,在规定压力、流量下驱动配套部件报警。火灾发生时,闭式喷头探测火灾,受热开启灭火;水流经过湿式报警阀组,湿式报警阀启动,经过延迟器延时后,水力警铃和压力开关动作;压力开关连锁消防水泵启动,同时向控制中心发出报警信号。
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、川消湿式报警阀组由阀体、延迟器、水力警铃、压力开关、排水阀、过滤器、泄水孔、供水侧压力表、系统侧压力表等组成。阀体被座圈和阀瓣分成上、下两腔,上腔(系统侧)与系统管网相通,下腔(供水侧)与水源相通。座圈上有多个沟槽小孔,沟槽小孔与报警水道相通。准工作状态时,沟槽小孔被阀瓣封闭,水流不能进入报警水道。阀体上设有补偿器(类似小孔单向阀),当系统侧管网有微小渗漏或水源压力有波动时,可以通过补偿器平衡阀体的上下腔压力,避免误报警。
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.
川消
2、当洒水喷头开放时,报警阀的系统侧压力降低,水流推动阀瓣开启,进入系统侧管网。同时,水流经沟槽小孔进入报警水道,少部份水流通过泄水孔排放,大部分水流进入延迟器。当延迟器蓄满以后,水流推动水力警铃报警,同时压力开关输出开关触点信号,连锁消防水泵。
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:延迟器可以进一步防止水流波动引起的误动作,阀瓣误动以后,会自动复位,在延迟器蓄满以前,水可以经泄水孔放空。
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.
湿式报警阀的工作事项相关内容就讲解到这里了,希望能够给您好的帮助,更多事项就来我们网站http://www.cx-fire.com咨询了解吧!
That's all for the work instructions of the wet alarm valve. We hope it can be of great help to you. For more information, please come to our website http://www.cx-fire.com Consult and understand!
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