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消(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)機(ji)首先(xian)應該滿足(zu)溫(wen)度(du)(du)和時間的特性(xing),即(ji)國家規定280℃/0.5h;其(qi)次,在一(yi)般環境(jing)溫(wen)度(du)(du)下(xia)(xia)(xia),可以保證(zheng)有效的排(pai)煙(yan)控制量。此外還要(yao)求消(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)機(ji)能(neng)夠(gou)進(jin)行周期(qi)性(xing)的實驗(yan),能(neng)夠(gou)發現(xian)其(qi)中的不(bu)足(zu),并加以改(gai)進(jin);可以適用(yong)各種通風(feng)(feng)要(yao)求的管(guan)道,便于安(an)裝(zhuang)與使用(yong)。消(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)機(ji)的性(xing)能(neng)優(you)良(liang)、耐高溫(wen)性(xing)能(neng)良(liang)好、效率高、占地(di)比離心風(feng)(feng)機(ji)少、高溫(wen)性(xing)能(neng)優(you)良(liang)。消(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)機(ji)能(neng)在300℃高溫(wen)條(tiao)件(jian)下(xia)(xia)(xia)連續運行60分(fen)鐘(zhong)以上(shang),100℃溫(wen)度(du)(du)條(tiao)件(jian)下(xia)(xia)(xia)連續20小時不(bu)損壞(huai),應用(yong)范圍廣(guang),可根據高級(ji)民(min)用(yong)建筑的不(bu)同(tong)要(yao)求,采用(yong)變速或(huo)多速的驅(qu)動型式,消(xiao)防(fang)排(pai)煙(yan)風(feng)(feng)機(ji)廣(guang)泛應用(yong)于高級(ji)民(min)用(yong)建筑、烤箱、地(di)下(xia)(xia)(xia)車庫(ku)、隧道等(deng)場合。安(an)裝(zhuang)方便,可直接和墻壁安(an)裝(zhuang),安(an)裝(zhuang)可采用(yong)垂直式、水平(ping)式或(huo)吊裝(zhuang)式,很大程度(du)(du)上(shang)節(jie)省了占地(di)面積(ji)。
雖然在(zai)商(shang)(shang)業建(jian)筑(zhu)(zhu)與多(duo)種(zhong)居(ju)住(zhu)房的(de)(de)(de)(de)(de)(de)被(bei)動消(xiao)防(fang)(fang)中,防(fang)(fang)火閥(fa)是關鍵組件,但在(zai)對建(jian)筑(zhu)(zhu)和(he)其居(ju)住(zhu)者的(de)(de)(de)(de)(de)(de)安全(quan)保(bao)護(hu)中,很多(duo)管(guan)理者沒有意識到(dao)防(fang)(fang)火閥(fa)的(de)(de)(de)(de)(de)(de)作用(yong)以(yi)及(ji)規(gui)定時間間隔(ge)(ge)內,防(fang)(fang)火閥(fa)的(de)(de)(de)(de)(de)(de)檢測(ce)、清潔(jie)及(ji)維護(hu)的(de)(de)(de)(de)(de)(de)重要(yao)意義(yi)。在(zai)商(shang)(shang)業建(jian)筑(zhu)(zhu)中的(de)(de)(de)(de)(de)(de)建(jian)造中我(wo)們總(zong)會遇(yu)到(dao)一些麻煩,試圖在(zai)能(neng)源效率與室內空氣質量之(zhi)間尋(xun)求平(ping)衡就是其中。大多(duo)商(shang)(shang)業建(jian)筑(zhu)(zhu)通(tong)(tong)過(guo)機械通(tong)(tong)風(feng)或(huo)空調系(xi)統解決(jue),能(neng)夠(gou)測(ce)量和(he)控制整個建(jian)筑(zhu)(zhu)的(de)(de)(de)(de)(de)(de)空氣變化(hua)。在(zai)通(tong)(tong)風(feng)管(guan)道系(xi)統的(de)(de)(de)(de)(de)(de)安裝上就存在(zai)上面提到(dao)的(de)(de)(de)(de)(de)(de)問題———如(ru)何在(zai)延遲或(huo)阻止(zhi)火災(zai)蔓延的(de)(de)(de)(de)(de)(de)建(jian)筑(zhu)(zhu)防(fang)(fang)火分(fen)隔(ge)(ge)與所允許空氣自(zi)由(you)流(liu)通(tong)(tong)的(de)(de)(de)(de)(de)(de)需要(yao)之(zhi)間達到(dao)平(ping)衡。滿(man)足空氣自(zi)由(you)流(liu)通(tong)(tong)需要(yao)不可避免地(di)再引入一條通(tong)(tong)道,而這卻加(jia)快了火勢的(de)(de)(de)(de)(de)(de)蔓延———利用(yong)通(tong)(tong)風(feng)管(guan)道系(xi)統使用(yong)的(de)(de)(de)(de)(de)(de)通(tong)(tong)道。毫無疑問,這中斷(duan)了防(fang)(fang)火分(fen)隔(ge)(ge),充當了建(jian)筑(zhu)(zhu)被(bei)動消(xiao)防(fang)(fang)護(hu)面的(de)(de)(de)(de)(de)(de)“裂口”。
在(zai)(zai)葉(xie)(xie)輪運轉初期(qi)及所有(you)(you)定(ding)期(qi)檢(jian)查的時候,只要(yao)一(yi)有(you)(you)機會,都(dou)必(bi)(bi)(bi)須檢(jian)查葉(xie)(xie)輪是否出(chu)現(xian)(xian)裂(lie)紋、磨(mo)損、積塵(chen)等(deng)(deng)缺陷。只要(yao)有(you)(you)可能(neng),都(dou)必(bi)(bi)(bi)須使(shi)葉(xie)(xie)輪保(bao)持清潔狀態,并定(ding)期(qi)用鋼絲刷刷去上面的積塵(chen)和銹皮(pi)等(deng)(deng),因為隨著運行(xing)(xing)(xing)時間(jian)的加長(chang),這些(xie)灰塵(chen)由于不(bu)可能(neng)均勻(yun)地附(fu)著在(zai)(zai)葉(xie)(xie)輪上,而造成葉(xie)(xie)輪平(ping)衡破壞,以至引起轉子振動(dong)(dong)。葉(xie)(xie)輪只要(yao)進行(xing)(xing)(xing)了修理(li),就(jiu)需要(yao)對其(qi)再作動(dong)(dong)平(ping)衡。如有(you)(you)條件,可以使(shi)用便攜試(shi)動(dong)(dong)平(ping)衡儀在(zai)(zai)現(xian)(xian)場進行(xing)(xing)(xing)平(ping)衡。在(zai)(zai)作動(dong)(dong)平(ping)衡之前,必(bi)(bi)(bi)須檢(jian)查所有(you)(you)緊(jin)(jin)定(ding)螺栓是否上緊(jin)(jin)。因為葉(xie)(xie)輪已(yi)經在(zai)(zai)不(bu)平(ping)衡狀態下運行(xing)(xing)(xing)了一(yi)段時間(jian),這些(xie)螺栓可能(neng)已(yi)經松(song)動(dong)(dong)。
1) 送風,包括通氣,如送鮮風和排氣,這個范圍很廣,如工廠車間,生產場地空氣,由于有害氣體產生需要排出室外,又需要把廚房排煙管道室外空氣輸送至室內。這時就要使用流量大而壓力小的空氣輸送管道,螺旋風管就適用,黔江廚房排煙管道一(yi)般情況下使用(yong)(yong)鍍鋅鐵管(guan),有(you)腐蝕(shi)性及(ji)特(te)別潮濕場所使用(yong)(yong)不銹鋼管(guan)。2) 送冷風(feng)(feng)。常(chang)見的(de)(de)(de)是中(zhong)央(yang)空(kong)調的(de)(de)(de)管(guan)道(dao)(dao),這(zhe)種(zhong)管(guan)道(dao)(dao)需(xu)要(yao)加(jia)保(bao)溫材料(liao)。螺旋(xuan)(xuan)風(feng)(feng)管(guan)可(ke)內貼保(bao)溫材料(liao),外表看(kan)來美觀(guan)。3) 排油煙(yan)(yan)(yan)。飯店、酒樓、賓館的(de)(de)(de)廚房均有(you)大(da)量(liang)油煙(yan)(yan)(yan)產(chan)(chan)生,需(xu)要(yao)排出,使用(yong)(yong)圓形的(de)(de)(de)風(feng)(feng)管(guan)就是油煙(yan)(yan)(yan)囪。在這(zhe)里,螺旋(xuan)(xuan)風(feng)(feng)管(guan)該(gai)叫做油煙(yan)(yan)(yan)管(guan)。4) 除塵(chen)。有(you)些(xie)工(gong)廠(chang)生產(chan)(chan)車(che)間(jian)很多塵(chen)埃,需(xu)要(yao)專門的(de)(de)(de)除塵(chen)裝(zhuang)置,其中(zhong)量(liang)較大(da)的(de)(de)(de)管(guan)道(dao)(dao),可(ke)使用(yong)(yong)螺旋(xuan)(xuan)風(feng)(feng)管(guan)。5) 散裝(zhuang)物料(liao)輸送。有(you)些(xie)工(gong)廠(chang)的(de)(de)(de)生產(chan)(chan)過程中(zhong),需(xu)要(yao)輸送松(song)散的(de)(de)(de)顆粒(li),特(te)別是比(bi)重不大(da)的(de)(de)(de)如發泡塑料(liao)粒(li)之(zhi)類的(de)(de)(de)使用(yong)(yong)螺旋(xuan)(xuan)風(feng)(feng)管(guan)造價低、效果好。
1、通風(feng)機(ji)(ji)安裝(zhuang)(zhuang)(zhuang)(zhuang)應符(fu)合(he)下(xia)列規(gui)定(ding)(ding)(1)風(feng)機(ji)(ji)試運轉(zhuan)時(shi),葉(xie)輪(lun)旋轉(zhuan)方向(xiang)正確,經不(bu)少于2H運轉(zhuan)后(hou),滑動軸承溫(wen)(wen)升不(bu)超過35度(du)(du),高溫(wen)(wen)度(du)(du)不(bu)超過70度(du)(du);滾動軸承溫(wen)(wen)升不(bu)超過40度(du)(du),高溫(wen)(wen)度(du)(du)不(bu)超過80度(du)(du)。(2)離心風(feng)機(ji)(ji)與(yu)(yu)減震臺座接(jie)觸緊密(mi)(mi),螺栓(shuan)擰緊,并(bing)有防松裝(zhuang)(zhuang)(zhuang)(zhuang)置。(3)管道風(feng)機(ji)(ji)采用減震吊(diao)架(jia)安裝(zhuang)(zhuang)(zhuang)(zhuang)時(shi),風(feng)機(ji)(ji)與(yu)(yu)減震吊(diao)架(jia)連接(jie)緊密(mi)(mi),牢固(gu)可靠(kao);采用支拖架(jia)安裝(zhuang)(zhuang)(zhuang)(zhuang)時(shi),風(feng)機(ji)(ji)與(yu)(yu)減震器(qi)(qi)(qi)及支架(jia)、托架(jia)連接(jie)緊密(mi)(mi),穩(wen)固(gu)可靠(kao)。2、過濾(lv)(lv)器(qi)(qi)(qi)、紙除塵(chen)器(qi)(qi)(qi)、過濾(lv)(lv)器(qi)(qi)(qi)吸收器(qi)(qi)(qi)安裝(zhuang)(zhuang)(zhuang)(zhuang)應符(fu)合(he)下(xia)列規(gui)定(ding)(ding)(1)各種設備(bei)(bei)的型號、規(gui)格(ge)、額(e)定(ding)(ding)風(feng)量必須符(fu)合(he)設計要求。(2)各種設備(bei)(bei)的安裝(zhuang)(zhuang)(zhuang)(zhuang)方向(xiang)必須正確。(3)設備(bei)(bei)與(yu)(yu)管路(lu)連接(jie)時(shi),宜采用整體性的橡膠軟(ruan)管接(jie)頭,并(bing)不(bu)得漏氣;固(gu)定(ding)(ding)支架(jia)應平(ping)正穩(wen)定(ding)(ding)。(4)過濾(lv)(lv)器(qi)(qi)(qi)的安裝(zhuang)(zhuang)(zhuang)(zhuang)應固(gu)定(ding)(ding)牢固(gu),過濾(lv)(lv)器(qi)(qi)(qi)與(yu)(yu)框架(jia)、框架(jia)與(yu)(yu)維護結構之間無明顯縫隙。(5)紙除塵(chen)器(qi)(qi)(qi)和(he)過濾(lv)(lv)器(qi)(qi)(qi)的安裝(zhuang)(zhuang)(zhuang)(zhuang),應固(gu)定(ding)(ding)牢固(gu),位置準確,連接(jie)嚴密(mi)(mi)。
在(zai)了(le)解空(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)的工(gong)作原理之(zhi)前,先來(lai)認識(shi)下空(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)的工(gong)作回路(lu)。空(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)的工(gong)作回路(lu)分為蒸(zheng)(zheng)發(fa)區(qu)和冷(leng)(leng)凝(ning)區(qu),空(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)在(zai)空(kong)調(diao)(diao)制(zhi)冷(leng)(leng)劑回路(lu)中(zhong)起壓(ya)(ya)縮驅動制(zhi)冷(leng)(leng)劑的作用。空(kong)調(diao)(diao)制(zhi)冷(leng)(leng)時,中(zhong)央空(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)把制(zhi)冷(leng)(leng)劑從低(di)壓(ya)(ya)區(qu)抽取來(lai)經緊縮后(hou)送到(dao)(dao)高(gao)壓(ya)(ya)區(qu)冷(leng)(leng)卻凝(ning)結(jie),經過(guo)散熱(re)片(pian)分發(fa)出熱(re)量到(dao)(dao)空(kong)氣(qi)(qi)(qi)中(zhong),制(zhi)冷(leng)(leng)劑也從氣(qi)(qi)(qi)態變(bian)成(cheng)液態,壓(ya)(ya)力升高(gao)。制(zhi)冷(leng)(leng)劑再從高(gao)壓(ya)(ya)區(qu)流向(xiang)低(di)壓(ya)(ya)區(qu),經過(guo)毛細管放(fang)射(she)到(dao)(dao)蒸(zheng)(zheng)發(fa)器(qi)(qi)(qi)中(zhong),壓(ya)(ya)力驟(zou)降,液態制(zhi)冷(leng)(leng)劑立刻變(bian)成(cheng)氣(qi)(qi)(qi)態,經過(guo)散熱(re)片(pian)吸收空(kong)氣(qi)(qi)(qi)中(zhong)大量的熱(re)量。這樣循環(huan)(huan)應(ying)用就(jiu)完(wan)成(cheng)了(le)制(zhi)冷(leng)(leng)系統。壓(ya)(ya)縮機(ji)(ji)通(tong)過(guo)節(jie)流裝(zhuang)置節(jie)流之(zhi)后(hou),通(tong)入到(dao)(dao)蒸(zheng)(zheng)發(fa)器(qi)(qi)(qi)中(zhong),將(jiang)所(suo)需要冷(leng)(leng)卻的媒介冷(leng)(leng)卻換熱(re)。例如(ru)將(jiang)蒸(zheng)(zheng)發(fa)器(qi)(qi)(qi)連接到(dao)(dao)樓里(li)的各個(ge)房(fang)間(jian),蒸(zheng)(zheng)發(fa)器(qi)(qi)(qi)內的蛇行管將(jiang)同空(kong)氣(qi)(qi)(qi)進行換熱(re),再通(tong)過(guo)鼓(gu)風將(jiang)冷(leng)(leng)氣(qi)(qi)(qi)吹向(xiang)房(fang)間(jian)的空(kong)氣(qi)(qi)(qi)當中(zhong)。而蒸(zheng)(zheng)發(fa)器(qi)(qi)(qi)蛇行管內的冷(leng)(leng)凍(dong)劑換熱(re)后(hou)變(bian)成(cheng)低(di)壓(ya)(ya)蒸(zheng)(zheng)氣(qi)(qi)(qi)回到(dao)(dao)壓(ya)(ya)縮機(ji)(ji),再被(bei)壓(ya)(ya)縮機(ji)(ji)壓(ya)(ya)縮,這樣循環(huan)(huan)利用就(jiu)完(wan)成(cheng)了(le)制(zhi)冷(leng)(leng)系統。