排(pai)煙(yan)防火閥(fa)到底是(shi)常(chang)開還(huan)是(shi)常(chang)閉
1.電動風閥首先我們要知道,電動風閥是設置在建筑防、排煙系統中的,并且:①在采用常開加壓送風口的機械加壓送風系統中是需要設置的,主要是防止平時狀態時因自然拔風造成的冷空氣侵入,
電(dian)動(dong)(dong)(dong)風(feng)閥平時(shi)(shi)關(guan)閉,系統(tong)啟動(dong)(dong)(dong)時(shi)(shi)隨之開(kai)啟;②在機械排(pai)煙系統(tong)中,存在于排(pai)煙與通(tong)風(feng)空調系統(tong)合(he)用的情況(kuang)下(xia),電(dian)動(dong)(dong)(dong)風(feng)閥平時(shi)(shi)常開(kai),火(huo)災(zai)時(shi)(shi)電(dian)動(dong)(dong)(dong)關(guan)閉,并且(qie)每個排(pai)煙合(he)用系統(tong)的管道(dao)上需聯(lian)動(dong)(dong)(dong)關(guan)閉的通(tong)
風(feng)(feng)和空氣調節系統(tong)的電(dian)動風(feng)(feng)閥不應(ying)超(chao)過(guo)10個(ge)。
2.排煙防火(huo)(huo)閥排煙防火(huo)(huo)閥是設置在機械排煙管道上的,平(ping)時常開,火(huo)(huo)災(zai)時溫度達(da)到(dao)280℃時關閉。具(ju)體位置為:①垂直風(feng)管與每層水平(ping)風(feng)管交(jiao)接處(chu)(chu)的水平(ping)管段上;②穿越防火(huo)(huo)分區處(chu)(chu);③排煙風(feng)機入口處(chu)(chu)
;④一個排煙(yan)系(xi)統負擔(dan)多個防(fang)煙(yan)分區(qu)的(de)排煙(yan)支管上。注(zhu)意(yi):排煙(yan)風(feng)機應與風(feng)機入口處(chu)的(de)排煙(yan)防(fang)火閥連(lian)鎖(suo),當該閥關閉時,排煙(yan)風(feng)機應能停止(zhi)運轉(zhuan)。
3.排煙(yan)(yan)閥安裝在機械排煙(yan)(yan)系統各支管(guan)端部(煙(yan)(yan)氣(qi)吸入(ru)口)處(chu),平(ping)時呈(cheng)關閉狀(zhuang)態并滿足漏風量(liang)要求,火(huo)(huo)災時聯(lian)動開啟。排煙(yan)(yan)閥簡單理解就(jiu)屬于常閉排煙(yan)(yan)口,從此處(chu)吸入(ru)煙(yan)(yan)氣(qi),然后進(jin)入(ru)排煙(yan)(yan)管(guan)道(dao)。4.防火(huo)(huo)閥
防(fang)火閥(fa)是設置在通(tong)風空調系(xi)統(tong)(tong)(公(gong)稱(cheng)(cheng)動(dong)作(zuo)(zuo)溫(wen)(wen)度(du)為70℃)和廚房排油煙(yan)管道(dao)上(公(gong)稱(cheng)(cheng)動(dong)作(zuo)(zuo)溫(wen)(wen)度(du)為150℃),平(ping)時常(chang)開,溫(wen)(wen)度(du)上升至公(gong)稱(cheng)(cheng)動(dong)作(zuo)(zuo)溫(wen)(wen)度(du)時關閉(bi)。防(fang)火閥(fa)在通(tong)風空調系(xi)統(tong)(tong)的設置位置:①穿越防(fang)火
分(fen)區(qu)處(chu)(chu); ②穿(chuan)越(yue)通(tong)風、空(kong)氣調節機(ji)房的(de)房間隔(ge)墻(qiang)(qiang)和樓板處(chu)(chu); ③穿(chuan)越(yue)重要或火災危險性大的(de)場所的(de)房間隔(ge)墻(qiang)(qiang)和樓板處(chu)(chu); ④穿(chuan)越(yue)防火分(fen)隔(ge)處(chu)(chu)的(de)變形縫兩側; ⑤豎向風管與每層(ceng)水(shui)平風管交接
處的水平管段上。
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凱億網宣辦:宋 2024.3.15 報價電話:18105449885
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