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在(zai)空(kong)調送(song)(song)風(feng)(feng)(feng)系統(tong)(tong)中(zhong),空(kong)調送(song)(song)風(feng)(feng)(feng)機送(song)(song)出的(de)風(feng)(feng)(feng)必須通過(guo)主干管分配到支(zhi)管中(zhong);在(zai)排(pai)煙(yan)系統(tong)(tong)中(zhong),煙(yan)氣(qi)由支(zhi)管到主干管后,進入排(pai)煙(yan)風(feng)(feng)(feng)機排(pai)出。當(dang)(dang)建筑物內(nei)發(fa)生火(huo)(huo)(huo)災(zai)時,在(zai)通風(feng)(feng)(feng)、空(kong)調系統(tong)(tong)中(zhong),為了防(fang)止火(huo)(huo)(huo)勢通過(guo)送(song)(song)風(feng)(feng)(feng)系統(tong)(tong)蔓(man)延(yan),當(dang)(dang)送(song)(song)風(feng)(feng)(feng)系統(tong)(tong)中(zhong)氣(qi)體溫(wen)度達(da)到70℃時,防(fang)火(huo)(huo)(huo)閥(fa)機構上(shang)熔斷(duan)器動(dong)作,閥(fa)門亦迅速關(guan)閥(fa),切(qie)斷(duan)煙(yan)氣(qi)與火(huo)(huo)(huo)勢沿風(feng)(feng)(feng)管蔓(man)延(yan)的(de)通路。同樣,在(zai)排(pai)煙(yan)系統(tong)(tong)中(zhong),發(fa)生火(huo)(huo)(huo)災(zai)時,排(pai)煙(yan)閥(fa)開啟(qi),進行排(pai)煙(yan),為了截斷(duan)高溫(wen)煙(yan)氣(qi)在(zai)排(pai)煙(yan)管路中(zhong)流動(dong),防(fang)止火(huo)(huo)(huo)勢蔓(man)延(yan)到另(ling)一防(fang)火(huo)(huo)(huo)分區(qu),當(dang)(dang)排(pai)出的(de)煙(yan)氣(qi)溫(wen)度達(da)到280℃時,排(pai)煙(yan)防(fang)火(huo)(huo)(huo)閥(fa)、排(pai)煙(yan)口上(shang)熔斷(duan)器動(dong)作,閥(fa)門必須自動(dong)關(guan)閉,阻止排(pai)煙(yan)。由此可見,防(fang)火(huo)(huo)(huo)閥(fa)、排(pai)煙(yan)閥(fa)做到了該通則通,該斷(duan)則斷(duan)的(de)隔煙(yan)阻火(huo)(huo)(huo)作用。
風(feng)管(guan)(guan)(guan)(guan)(guan)(guan)主要指(zhi)中央(yang)空調系統的(de)(de)(de)通風(feng)管(guan)(guan)(guan)(guan)(guan)(guan)道,它(ta)常(chang)常(chang)被忽視,但卻是空調系統的(de)(de)(de)重(zhong)要組(zu)成(cheng)部分,目前常(chang)見的(de)(de)(de)風(feng)管(guan)(guan)(guan)(guan)(guan)(guan)主要有四種:1)鍍(du)鋅薄鋼(gang)板風(feng)管(guan)(guan)(guan)(guan)(guan)(guan);2)無機(ji)玻(bo)璃鋼(gang)風(feng)管(guan)(guan)(guan)(guan)(guan)(guan);3)復合(he)玻(bo)纖(xian)(xian)板風(feng)管(guan)(guan)(guan)(guan)(guan)(guan);4)纖(xian)(xian)維織(zhi)物風(feng)管(guan)(guan)(guan)(guan)(guan)(guan)。鍍(du)鋅薄鋼(gang)板風(feng)管(guan)(guan)(guan)(guan)(guan)(guan):早(zao)使用的(de)(de)(de)風(feng)管(guan)(guan)(guan)(guan)(guan)(guan),采用鍍(du)鋅薄鋼(gang)板制(zhi)作,適合(he)含濕量小的(de)(de)(de)一般性(xing)氣體(ti)的(de)(de)(de)輸(shu)送,有易(yi)生銹,無保(bao)溫(wen)和消(xiao)(xiao)聲功能,制(zhi)作安(an)裝周(zhou)期(qi)長的(de)(de)(de)特點。無機(ji)玻(bo)璃鋼(gang)風(feng)管(guan)(guan)(guan)(guan)(guan)(guan):較新(xin)的(de)(de)(de)風(feng)管(guan)(guan)(guan)(guan)(guan)(guan)類型,采用玻(bo)璃纖(xian)(xian)維增強(qiang)無機(ji)材料制(zhi)作,遇火不燃、耐腐(fu)蝕、份量重(zhong),硬度大但較脆,受(shou)自重(zhong)影響易(yi)變(bian)形酥裂,無保(bao)溫(wen)和消(xiao)(xiao)聲性(xing)能,制(zhi)作安(an)裝周(zhou)期(qi)長。
風(feng)機(ji)(ji)(ji)(ji)分(fen)(fen)類可以按(an)氣體(ti)(ti)流(liu)(liu)(liu)(liu)(liu)動(dong)(dong)(dong)(dong)的(de)(de)方(fang)向,分(fen)(fen)為離(li)(li)心(xin)(xin)式(shi)、軸(zhou)流(liu)(liu)(liu)(liu)(liu)式(shi)、斜流(liu)(liu)(liu)(liu)(liu)式(shi)和橫流(liu)(liu)(liu)(liu)(liu)式(shi)等(deng)類型(xing)(xing)。這種風(feng)機(ji)(ji)(ji)(ji)分(fen)(fen)類的(de)(de)機(ji)(ji)(ji)(ji)器(qi)有:離(li)(li)心(xin)(xin)風(feng)機(ji)(ji)(ji)(ji)工(gong)作時,動(dong)(dong)(dong)(dong)力(li)機(ji)(ji)(ji)(ji)(主(zhu)要是電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji))驅動(dong)(dong)(dong)(dong)葉(xie)(xie)輪(lun)在蝸形機(ji)(ji)(ji)(ji)殼內旋轉(zhuan),空氣經吸氣口(kou)從葉(xie)(xie)輪(lun)中心(xin)(xin)處(chu)吸入。由于葉(xie)(xie)片對氣體(ti)(ti)的(de)(de)動(dong)(dong)(dong)(dong)力(li)作用(yong),氣體(ti)(ti)壓力(li)和速度得(de)以提高,并在離(li)(li)心(xin)(xin)力(li)作用(yong)下沿(yan)著葉(xie)(xie)道(dao)甩向機(ji)(ji)(ji)(ji)殼,從排氣口(kou)排出。因氣體(ti)(ti)在葉(xie)(xie)輪(lun)內的(de)(de)流(liu)(liu)(liu)(liu)(liu)動(dong)(dong)(dong)(dong)主(zhu)要是在徑向平面內,故又稱(cheng)徑流(liu)(liu)(liu)(liu)(liu)風(feng)機(ji)(ji)(ji)(ji)。離(li)(li)心(xin)(xin)風(feng)機(ji)(ji)(ji)(ji)主(zhu)要由葉(xie)(xie)輪(lun)和機(ji)(ji)(ji)(ji)殼組成,小型(xing)(xing)風(feng)機(ji)(ji)(ji)(ji)的(de)(de)葉(xie)(xie)輪(lun)直(zhi)接裝在電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)上中、大型(xing)(xing)風(feng)機(ji)(ji)(ji)(ji)通過聯(lian)軸(zhou)器(qi)或皮(pi)帶輪(lun)與電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)聯(lian)接。離(li)(li)心(xin)(xin)風(feng)機(ji)(ji)(ji)(ji)一般(ban)為單側進(jin)氣,用(yong)單級葉(xie)(xie)輪(lun);流(liu)(liu)(liu)(liu)(liu)量大的(de)(de)可雙(shuang)側進(jin)氣,用(yong)兩個(ge)背(bei)靠背(bei)的(de)(de)葉(xie)(xie)輪(lun),又稱(cheng)為雙(shuang)吸式(shi)離(li)(li)心(xin)(xin)風(feng)機(ji)(ji)(ji)(ji)。
一、火災(zai)(zai)自(zi)(zi)動(dong)報(bao)警(jing)系統:對(dui)消(xiao)(xiao)防火災(zai)(zai)報(bao)警(jing)控制(zhi)器(qi)進(jin)(jin)(jin)(jin)行自(zi)(zi)檢(jian)(jian)(jian)(jian)功能(neng)檢(jian)(jian)(jian)(jian)查(cha)(cha):對(dui)可測量相(xiang)關參數進(jin)(jin)(jin)(jin)行查(cha)(cha)看(kan)和記錄,如回路(lu)電(dian)流等;公共(gong)場所煙(yan)感器(qi)、溫感器(qi)安裝(zhuang)(zhuang)檢(jian)(jian)(jian)(jian)查(cha)(cha),與(yu)(yu)底座接觸(chu)是(shi)否(fou)良(liang)好,外(wai)(wai)觀(guan)是(shi)否(fou)潔凈完好;每次隨機(ji)抽取(qu)不(bu)低于5%的煙(yan)感或溫感,噴煙(yan)或加熱后查(cha)(cha)視(shi)報(bao)警(jing)是(shi)否(fou)正確;手動(dong)報(bao)警(jing)按(an)鈕,檢(jian)(jian)(jian)(jian)查(cha)(cha)安裝(zhuang)(zhuang)是(shi)否(fou)牢固(gu),有無破損及丟(diu)失;每次隨機(ji)抽取(qu)不(bu)低于5%的手動(dong)報(bao)警(jing)按(an)鈕,進(jin)(jin)(jin)(jin)行模擬報(bao)警(jing),測試報(bao)警(jing)功能(neng)是(shi)否(fou)正常(chang)(chang);對(dui)樓(lou)層(ceng)內各模塊箱進(jin)(jin)(jin)(jin)行外(wai)(wai)觀(guan)檢(jian)(jian)(jian)(jian)查(cha)(cha),外(wai)(wai)接線(xian)是(shi)否(fou)固(gu)定良(liang)好;對(dui)聯(lian)動(dong)控制(zhi)柜(ju)上的按(an)鈕每次按(an)10%的比例(li)進(jin)(jin)(jin)(jin)行功能(neng)試驗,控制(zhi)功能(neng)正常(chang)(chang)。對(dui)火災(zai)(zai)報(bao)警(jing)控制(zhi)柜(ju)、聯(lian)動(dong)控制(zhi)柜(ju)等進(jin)(jin)(jin)(jin)行清掃除(chu)塵。線(xian)路(lu)松動(dong),應(ying)進(jin)(jin)(jin)(jin)行緊(jin)固(gu)。對(dui)自(zi)(zi)檢(jian)(jian)(jian)(jian)、消(xiao)(xiao)音、復位功能(neng)檢(jian)(jian)(jian)(jian)查(cha)(cha),主電(dian)源(yuan)與(yu)(yu)備(bei)用(yong)電(dian)源(yuan)切換、報(bao)警(jing)檢(jian)(jian)(jian)(jian)查(cha)(cha)。二、應(ying)急照明及疏散指(zhi)示(shi)燈(deng)每3個月進(jin)(jin)(jin)(jin)行一次備(bei)用(yong)電(dian)池亮燈(deng)(半個小(xiao)時),使電(dian)池放電(dian)后再充電(dian),延長(chang)電(dian)池壽命;檢(jian)(jian)(jian)(jian)查(cha)(cha)出(chu)(chu)口指(zhi)示(shi)燈(deng)玻璃面(mian)板有無劃傷或破裂(lie)現(xian)象;出(chu)(chu)口指(zhi)示(shi)燈(deng)電(dian)源(yuan)指(zhi)示(shi)燈(deng)是(shi)否(fou)亮,如不(bu)亮,應(ying)立即(ji)修理;檢(jian)(jian)(jian)(jian)查(cha)(cha)出(chu)(chu)口指(zhi)示(shi)燈(deng)安裝(zhuang)(zhuang)是(shi)否(fou)牢固(gu);針對(dui)檢(jian)(jian)(jian)(jian)查(cha)(cha)中發現(xian)的缺陷取(qu)下來進(jin)(jin)(jin)(jin)行修復,再裝(zhuang)(zhuang)回原位;燈(deng)箱外(wai)(wai)殼及面(mian)板擦抹干凈。
消防排煙風機首先應該滿足溫度和時間的特性,即國家規定280℃/0.5h;其次,在一般環境溫度下,可以保證有效的排煙控制量。此外還要求消防排煙風機能夠進行周期性的實驗,能夠發現其中的不足,并加以改進;可以適用各種通風要求的管道,便于安裝與使用。消防排煙風機的性能優良、耐高溫性能良好、效率高、占地比離心風機少、高溫性能優良。消防排煙風機能在300℃高溫條件下連續運行60分鐘以上,100℃溫度條件下連續20小時不損壞,值得信賴的通風管道應用范圍廣,可根據高級民用建筑的不同要求,采用變速或多速的驅動型式,消防排煙風機廣泛應用于高級民用建筑、烤箱、地下車庫、隧道等場合。通風管道批發安裝(zhuang)方便,可(ke)直(zhi)接和(he)墻壁(bi)安裝(zhuang),安裝(zhuang)可(ke)采用垂直(zhi)式(shi)(shi)、水平式(shi)(shi)或(huo)吊裝(zhuang)式(shi)(shi),很大程度上節省(sheng)了占地面積(ji)。