[FS] 問﹕試簡介一下Fire Hydrant Hose Heel System? | fs hose reel
答﹕FireHydrant由入水位開始講起,FSD講到明想講水缸放到上天台再責水落嚟。同SprinklerTank唔同,Sprinkler嗰個放天台冇著數,因為點都要兜返落G/F個ControlValve再打上去,FH/HR個缸就唔洗做呢樣嘢,但水記入水啲水唔夠壓的話就要加個TransferTank,如圖﹕呢個TransferPump要六個鐘頭內refill滿天台個缸。另一條路係由個FSInlet打上去一個Staircase一個FSInlet,如果超過60m,就要加IntermediateBossterPump,詳見 https://elvissharing.blogspot.com/2020/03/fs-intermediate-booster-pump-jockey-pump.html[1]之後到水缸Size,係跟紅...
答﹕Fire Hydrant 由入水位開始講起,FSD講到明想講水缸放到上天台再責水落嚟。同Sprinkler Tank唔同,Sprinkler嗰個放天台冇著數,因為點都要兜返落G/F個Control Valve再打上去,FH/HR個缸就唔洗做呢樣嘢,但水記入水啲水唔夠壓的話就要加個Transfer Tank, 如圖﹕呢個Transfer Pump 要六個鐘頭內refill滿天台個缸。
另一條路係由個FS Inlet打上去一個Staircase一個FS Inlet, 如果超過60m, 就要加Intermediate Bosster Pump, 詳見 https://elvissharing.blogspot.com/2020/03/fs-intermediate-booster-pump-jockey-pump.html[1]
之後到水缸Size, 係跟紅皮書,單層最大係乜面積,就揀返相對應Size水缸
上到天台水缸後責落嚟,最高嗰堆唔夠壓所以都要加泵,中間有段唔洗加,因為紅皮書要求係450L/min, 350-850kPa, within 呢個Range係最正乜都唔洗做,但如果棟樓再高啲,最低嗰幾層就要加Pressure Relief Valve
FH/HR起Pump方式同Sprinker Pump類似,都係用Pressure Switch. 跌到95%起Jockey; 跌到80%起Duty cut Jockey; 跌到65%起Standby, Standy唔掂又再換返Duty(見留言), 直至行到隻Standby死為止。所有Pump都Interlock, 每次只會行一隻。所以計落FH/HR System會有三SET泵,一SET係由Trasfer Tank 泵水上天台水缸,一SET係Inlet泵上去既Intermediate Booster Pump, 一SET係天台責返落嚟頭幾層唔夠壓既泵。(當然大前提係層樓夠高先會咁。)
Hose Reel
拉長佢30m 要到晒所有位置,要Jet到6m, 冇乜特別同FH類似。Hose Reel 隔離會有個Manual Breakglass, 連帶住响鐘同埋Visual Signal, 爆咗之後會起泵同埋Direct Link 去消防...