排煙閥(fa) 防(fang)火閥(fa) 排煙防(fang)火閥(fa) 三者的區別(bie)
排(pai)(pai)煙(yan)閥(fa)安裝(zhuang)在機(ji)械排(pai)(pai)煙(yan)系(xi)統(tong)各支管端部(煙(yan)氣吸入口)處,平時呈(cheng)關閉狀態并(bing)滿足漏風量要(yao)求,火災或需要(yao)排(pai)(pai)煙(yan)時手動和(he)電動打開,起排(pai)(pai)煙(yan)作用的(de)閥(fa)門。
帶有裝飾口或進行過裝飾處理的閥門稱為排煙口 。防火閥常(chang)開(kai),70℃或者280℃關(guan)(guan)(guan)閉,一般(ban)安裝在(zai)(zai)風(feng)管穿越防(fang)火墻處,起火災關(guan)(guan)(guan)斷作(zuo)用(yong),可以(yi)設置輸出電(dian)訊號,溫度超(chao)過(guo)70℃或者280℃時(shi)(shi)閥(fa)(fa)門關(guan)(guan)(guan)閉,聯(lian)動送(song)(補)風(feng)機關(guan)(guan)(guan)閉。安裝在(zai)(zai)中(zhong)央(yang)空(kong)調風(feng)道(dao)(dao)系(xi)統中(zhong),工(gong)作(zuo)原理是極易熔(rong)(rong)合金的(de)(de)溫度控(kong)制,利用(yong)重力作(zuo)用(yong)和彈簧(huang)機構的(de)(de)作(zuo)用(yong)關(guan)(guan)(guan)閉閥(fa)(fa)門。當火災發生時(shi)(shi),火焰入侵(qin)風(feng)道(dao)(dao),高溫使(shi)閥(fa)(fa)門上(shang)的(de)(de)易熔(rong)(rong)合金熔(rong)(rong)解,或使(shi)記憶合金產生形變使(shi)閥(fa)(fa)門自動關(guan)(guan)(guan)閉,用(yong)于風(feng)道(dao)(dao)與防(fang)火分區貫穿的(de)(de)場(chang)合。排煙(yan)(yan)(yan)防(fang)火閥(fa)(fa)消(xiao)防(fang)部件,一般(ban)安裝在(zai)(zai)機械排煙(yan)(yan)(yan)系(xi)統的(de)(de)管道(dao)(dao)上(shang),平(ping)時(shi)(shi)呈關(guan)(guan)(guan)閉狀(zhuang)態,發生火災時(shi)(shi)開(kai)啟排煙(yan)(yan)(yan),當排煙(yan)(yan)(yan)管道(dao)(dao)內(nei)煙(yan)(yan)(yan)氣溫度達到280度時(shi)(shi)關(guan)(guan)(guan)閉,并在(zai)(zai)一定時(shi)(shi)間(jian)內(nei)滿足漏煙(yan)(yan)(yan)量和耐火完(wan)整性要求,起隔煙(yan)(yan)(yan)阻火作(zuo)用(yong)。主(zhu)要材(cai)質:碳素鋼、鍍鋅板、不(bu)銹(xiu)鋼。
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德州凱億(yi) 2022 05 11 于
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