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1、70℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)用在(zai)(zai)空調(diao)送風、通(tong)風系統管(guan)道(dao)上(shang);平時(shi)(shi)(shi)(shi)(shi)常(chang)開,發生火(huo)(huo)災(zai)(zai)時(shi)(shi)(shi)(shi)(shi)關(guan)閉(bi),聯鎖風機,使風機關(guan)閉(bi);2、280℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)用在(zai)(zai)排(pai)(pai)(pai)煙(yan)(yan)(yan)系統管(guan)道(dao)上(shang),平時(shi)(shi)(shi)(shi)(shi)常(chang)開,發生火(huo)(huo)災(zai)(zai)時(shi)(shi)(shi)(shi)(shi)排(pai)(pai)(pai)煙(yan)(yan)(yan),當煙(yan)(yan)(yan)氣(qi)溫(wen)(wen)度(du)達到280度(du)時(shi)(shi)(shi)(shi)(shi),防(fang)(fang)火(huo)(huo)閥(fa)(fa)關(guan)閉(bi),聯鎖風機關(guan)閉(bi);3、280℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)應為常(chang)開,又叫(jiao)高溫(wen)(wen)防(fang)(fang)火(huo)(huo)閥(fa)(fa),一般安裝在(zai)(zai)有(you)高溫(wen)(wen)環(huan)境的通(tong)風管(guan)道(dao)中,當溫(wen)(wen)度(du)到達280℃后(hou)易(yi)熔(rong)合(he)(he)金熔(rong)化(hua),閥(fa)(fa)門(men)關(guan)閉(bi),同時(shi)(shi)(shi)(shi)(shi)可以用24V電信(xin)(xin)號(hao)控制。如(ru)果說是280排(pai)(pai)(pai)煙(yan)(yan)(yan)防(fang)(fang)火(huo)(huo)閥(fa)(fa)應為常(chang)閉(bi),安裝在(zai)(zai)排(pai)(pai)(pai)煙(yan)(yan)(yan)管(guan)道(dao)中發生火(huo)(huo)災(zai)(zai)時(shi)(shi)(shi)(shi)(shi)控制中心給出電信(xin)(xin)號(hao)使其打開排(pai)(pai)(pai)煙(yan)(yan)(yan),當溫(wen)(wen)度(du)到達280時(shi)(shi)(shi)(shi)(shi)易(yi)熔(rong)合(he)(he)金熔(rong)化(hua)閥(fa)(fa)門(men)關(guan)閉(bi),是一種二次動作的閥(fa)(fa)門(men)。
一、風管及部件安裝的有關規定1.風管安裝的強制規定,當風管穿過需要封閉的防火、防爆墻體或樓板時,應設預埋管或防護套管。套管鋼板厚度不應小于1.6mm,風管與防護套管之間應用不燃且對人體無害的柔性材料封堵,風道應安裝設防火閥。風管內嚴禁各種管道、電線敷設及穿越;輸送含有易燃易爆氣體或安裝在易燃易爆環境的風管系統,應有良好的接地,通過生活區、生產房間時必須嚴密,不得設接口;值得信賴的排煙管道室外主管的固定拉索嚴禁拉在避雷針或避雷網上。輸送溫度高于80℃的空氣的風管,應按設計要求采取防護措施。2.風管安裝的一般規定風管安裝宜在建筑圍護結構施工完畢、場所清理后進行。凈化空調風管應在安裝部位地面做好,墻面抹灰工序完畢,室內無飛塵或有防塵措施后進行。大渡口排煙管道安裝風管(guan)(guan)前應清(qing)除管(guan)(guan)內外雜物,并做(zuo)好清(qing)潔和保(bao)護工作,風管(guan)(guan)安裝的位(wei)置、標高和走向等應符合設(she)計要求,現場風管(guan)(guan)接口的配置不得(de)縮小(xiao)有效(xiao)截面。
確(que)保(bao)(bao)通風效果:高溫(wen)(wen)(wen)消防(fang)(fang)(fang)(fang)排(pai)煙風機(ji)(ji)的(de)(de)(de)使(shi)用介(jie)質本身溫(wen)(wen)(wen)度相對較高,且自身的(de)(de)(de)運轉也是(shi)會(hui)產(chan)生(sheng)一定的(de)(de)(de)溫(wen)(wen)(wen)度,若是(shi)將其(qi)放(fang)在(zai)(zai)(zai)(zai)密封環(huan)(huan)境中(zhong)(zhong),那么很(hen)容(rong)易就(jiu)會(hui)導致(zhi)高溫(wen)(wen)(wen)現(xian)(xian)象發(fa)生(sheng),針對于這種情況(kuang)在(zai)(zai)(zai)(zai)前期選擇(ze)安裝環(huan)(huan)境時(shi)就(jiu)應該要(yao)(yao)(yao)多注意,好(hao)是(shi)能夠將其(qi)放(fang)在(zai)(zai)(zai)(zai)通風效果較好(hao)的(de)(de)(de)環(huan)(huan)境中(zhong)(zhong),通過對流(liu)運動來有(you)效降(jiang)低溫(wen)(wen)(wen)度,這是(shi)可以有(you)效的(de)(de)(de)防(fang)(fang)(fang)(fang)止高溫(wen)(wen)(wen)現(xian)(xian)象的(de)(de)(de)發(fa)生(sheng)。確(que)保(bao)(bao)電(dian)流(liu)大(da)小合適:消防(fang)(fang)(fang)(fang)排(pai)煙風機(ji)(ji)的(de)(de)(de)使(shi)用還(huan)是(shi)要(yao)(yao)(yao)注意電(dian)流(liu)問題,是(shi)應該要(yao)(yao)(yao)防(fang)(fang)(fang)(fang)止電(dian)流(liu)過大(da)現(xian)(xian)象發(fa)生(sheng),否則(ze)會(hui)讓在(zai)(zai)(zai)(zai)運行中(zhong)(zhong)會(hui)因(yin)為電(dian)流(liu)過大(da)而(er)產(chan)生(sheng)較多的(de)(de)(de)電(dian)阻,而(er)這也是(shi)會(hui)導致(zhi)高溫(wen)(wen)(wen)現(xian)(xian)象發(fa)生(sheng)。因(yin)為高溫(wen)(wen)(wen)會(hui)直接影響(xiang)著(zhu)消防(fang)(fang)(fang)(fang)排(pai)煙風機(ji)(ji)的(de)(de)(de)使(shi)用,因(yin)此在(zai)(zai)(zai)(zai)日常使(shi)用中(zhong)(zhong)就(jiu)應該要(yao)(yao)(yao)采取(qu)(qu)措施來有(you)效的(de)(de)(de)防(fang)(fang)(fang)(fang)止高溫(wen)(wen)(wen)現(xian)(xian)象發(fa)生(sheng),且在(zai)(zai)(zai)(zai)高溫(wen)(wen)(wen)之(zhi)后要(yao)(yao)(yao)采取(qu)(qu)措施來降(jiang)溫(wen)(wen)(wen),以確(que)保(bao)(bao)安全。
風(feng)(feng)(feng)管(guan)(guan)主(zhu)要指中(zhong)央空調系(xi)統(tong)的(de)通風(feng)(feng)(feng)管(guan)(guan)道,它常常被忽視(shi),但卻是空調系(xi)統(tong)的(de)重(zhong)(zhong)要組成部分,目前常見的(de)風(feng)(feng)(feng)管(guan)(guan)主(zhu)要有四種:1)鍍(du)(du)鋅薄鋼板(ban)風(feng)(feng)(feng)管(guan)(guan);2)無(wu)機玻(bo)璃鋼風(feng)(feng)(feng)管(guan)(guan);3)復合玻(bo)纖板(ban)風(feng)(feng)(feng)管(guan)(guan);4)纖維(wei)織物風(feng)(feng)(feng)管(guan)(guan)。鍍(du)(du)鋅薄鋼板(ban)風(feng)(feng)(feng)管(guan)(guan):早使用的(de)風(feng)(feng)(feng)管(guan)(guan),采用鍍(du)(du)鋅薄鋼板(ban)制(zhi)作,適合含(han)濕量(liang)(liang)小的(de)一般性氣(qi)體的(de)輸送,有易(yi)生銹,無(wu)保溫(wen)和消聲(sheng)功能(neng),制(zhi)作安裝(zhuang)周期(qi)(qi)長的(de)特(te)點。無(wu)機玻(bo)璃鋼風(feng)(feng)(feng)管(guan)(guan):較新(xin)的(de)風(feng)(feng)(feng)管(guan)(guan)類型,采用玻(bo)璃纖維(wei)增強無(wu)機材料制(zhi)作,遇火不燃、耐(nai)腐(fu)蝕、份量(liang)(liang)重(zhong)(zhong),硬度大(da)但較脆,受自重(zhong)(zhong)影響易(yi)變形(xing)酥裂,無(wu)保溫(wen)和消聲(sheng)性能(neng),制(zhi)作安裝(zhuang)周期(qi)(qi)長。