影響排煙防火閥作用原因有哪些?
1、排煙(yan)(yan)(yan)防火閥(fa)的(de)(de)方位(wei)設(she)置不當,從排煙(yan)(yan)(yan)的(de)(de)作用考方面(mian)(mian)慮,排煙(yan)(yan)(yan)窗大概設(she)置在盡量(liang)挨近屋墻上(shang)部(bu)的(de)(de)方位(wei)。可(ke)能是出于(yu)外墻美麗,排煙(yan)(yan)(yan)防火閥(fa)設(she)置在了中(zhong)部(bu)甚(shen)至下部(bu),距頂板的(de)(de)距離(li)較大,十(shi)分不利(li)于(yu)天(tian)然排煙(yan)(yan)(yan)。排煙(yan)(yan)(yan)防火閥(fa)的(de)(de)開窗面(mian)(mian)積(ji)(ji)不契合(he)規(gui)(gui)范:《高規(gui)(gui)》對(dui)選用天(tian)然排煙(yan)(yan)(yan)部(bu)位(wei)的(de)(de)開窗面(mian)(mian)積(ji)(ji)均有(you)明晰(xi)的(de)(de)規(gui)(gui)矩(ju),但由于(yu)有(you)些(xie)規(gui)(gui)劃人(ren)員(yuan)未按規(gui)(gui)范需求進行仔細(xi)核算,或將固定窗的(de)(de)面(mian)(mian)積(ji)(ji)核算在排煙(yan)(yan)(yan)窗面(mian)(mian)積(ji)(ji)之內,致使有(you)些(xie)工程(cheng)排煙(yan)(yan)(yan)窗面(mian)(mian)積(ji)(ji)達不到規(gui)(gui)范需求,直接(jie)影響排煙(yan)(yan)(yan)作用。
2、每(mei)個設(she)備(bei)的(de)運(yun)用(yong)(yong),都(dou)和產品本(ben)身(shen)的(de)質量(liang)、裝(zhuang)置及(ji)運(yun)用(yong)(yong)環境有(you)關,排(pai)煙(yan)防火閥也(ye)不(bu)破例。排(pai)煙(yan)防火閥的(de)運(yun)用(yong)(yong)要因(yin)地(di)制(zhi)宜,只要這樣才干(gan)發(fa)揮出應有(you)的(de)作(zuo)用(yong)(yong)。
消防排煙風機的排煙防火閥是接(jie)常(chang)開仍是常(chang)閉
排(pai)(pai)煙(yan)(yan)(yan)(yan)防火(huo)閥設(she)置(zhi)常(chang)開或(huo)常(chang)閉(bi),視排(pai)(pai)煙(yan)(yan)(yan)(yan)口(kou)(kou)的(de)方式而定.當設(she)常(chang)閉(bi)的(de)排(pai)(pai)煙(yan)(yan)(yan)(yan)口(kou)(kou)時(shi),排(pai)(pai)煙(yan)(yan)(yan)(yan)支(zhi)管上設(she)常(chang)開的(de)排(pai)(pai)煙(yan)(yan)(yan)(yan)防火(huo)閥。當設(she)一般(ban)常(chang)開型風口(kou)(kou)時(shi),排(pai)(pai)煙(yan)(yan)(yan)(yan)支(zhi)管上設(she)常(chang)閉(bi)的(de)排(pai)(pai)煙(yan)(yan)(yan)(yan)防火(huo)閥。當設(she)常(chang)閉(bi)型專(zhuan)用防火(huo)排(pai)(pai)煙(yan)(yan)(yan)(yan)口(kou)(kou)時(shi),則排(pai)(pai)煙(yan)(yan)(yan)(yan)支(zhi)管上不設(she)排(pai)(pai)煙(yan)(yan)(yan)(yan)防火(huo)閥。設(she)置(zhi)機械排(pai)(pai)煙(yan)(yan)(yan)(yan)的(de)地下室應考慮進風設(she)備,當選用機械進風體系時(shi),應在風機進口(kou)(kou)管道上設(she)置(zhi)70℃熔斷的(de)防火(huo)閥。
關于機(ji)械加壓送(song)風(feng)(feng)體系,可在(zai)加壓送(song)風(feng)(feng)機(ji)進(jin)口(kou)管(guan)道上設置70℃熔(rong)斷的防(fang)火(huo)(huo)閥(fa),以防(fang)止新風(feng)(feng)進(jin)口(kou)受火(huo)(huo)、煙(yan)(yan)要(yao)挾,將煙(yan)(yan)氣輸送(song)至(zhi)樓層內。在(zai)排煙(yan)(yan)風(feng)(feng)機(ji)的進(jin)口(kou)總管(guan)上應設置當煙(yan)(yan)氣溫度超越280℃時(shi)能主動封閉的排煙(yan)(yan)防(fang)火(huo)(huo)閥(fa),且應與排煙(yan)(yan)風(feng)(feng)機(ji)連鎖(suo),當排煙(yan)(yan)防(fang)火(huo)(huo)閥(fa)封閉時(shi),風(feng)(feng)機(ji)中止作業(ye)。
排(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)機應確(que)保在(zai)280℃時(shi)能接連(lian)作業30min。需求闡明的是,排(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火閥設(she)置(zhi)在(zai)排(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)機前、后,要依具體狀況靈敏斷(duan)定。以(yi)地(di)下室(shi)(shi)排(pai)(pai)煙(yan)(yan)(yan)(yan)體系為例(li).當地(di)下室(shi)(shi)僅為一(yi)(yi)層(ceng),且排(pai)(pai)煙(yan)(yan)(yan)(yan)經(jing)豎(shu)風(feng)道(dao)排(pai)(pai)至室(shi)(shi)外時(shi),排(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火閥宜設(she)置(zhi)在(zai)排(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)機進(jin)口總管上(shang)(shang).當地(di)下室(shi)(shi)層(ceng)數(shu)在(zai)二層(ceng)及二層(ceng)以(yi)上(shang)(shang),各層(ceng)共用一(yi)(yi)排(pai)(pai)煙(yan)(yan)(yan)(yan)豎(shu)井(jing)時(shi),則每(mei)層(ceng)排(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火閥應設(she)置(zhi)在(zai)排(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)機出口總管上(shang)(shang),即(ji)緊(jin)靠排(pai)(pai)煙(yan)(yan)(yan)(yan)豎(shu)井(jing)一(yi)(yi)側設(she)置(zhi)。
不論是豎(shu)向(xiang)安(an)置(zhi)的(de)(de)(de)(de)走道(dao)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)體系仍(reng)是水平式安(an)置(zhi)的(de)(de)(de)(de)房(fang)間(jian)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)體系,均應(ying)在(zai)(zai)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)支管(guan)(guan)(guan)與豎(shu)風道(dao)銜接處設(she)置(zhi)280℃時(shi)能主動封閉(bi)的(de)(de)(de)(de)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火(huo)閥(fa)。排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火(huo)閥(fa)設(she)置(zhi)常開或常閉(bi),關于房(fang)間(jian)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)體系,當擔(dan)負一(yi)個(ge)防(fang)火(huo)分區(qu)的(de)(de)(de)(de)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)管(guan)(guan)(guan)道(dao)帶多個(ge)防(fang)煙(yan)(yan)(yan)(yan)分區(qu)的(de)(de)(de)(de)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)口時(shi),應(ying)在(zai)(zai)該防(fang)火(huo)分區(qu)干管(guan)(guan)(guan)上(shang)設(she)常開的(de)(de)(de)(de)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)防(fang)火(huo)閥(fa),一(yi)起(qi)各防(fang)煙(yan)(yan)(yan)(yan)分區(qu)支管(guan)(guan)(guan)上(shang)設(she)常閉(bi)的(de)(de)(de)(de)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)口或排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)閥(fa)。
以上內容由排煙防火閥廠家整理!