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風管(guan)(guan)(guan)(guan)主(zhu)(zhu)要(yao)指中央(yang)空調(diao)系統的(de)(de)(de)通(tong)風管(guan)(guan)(guan)(guan)道,它(ta)常常被忽視,但卻是空調(diao)系統的(de)(de)(de)重要(yao)組成部分(fen),目前(qian)常見的(de)(de)(de)風管(guan)(guan)(guan)(guan)主(zhu)(zhu)要(yao)有四種:1)鍍鋅(xin)薄(bo)鋼板風管(guan)(guan)(guan)(guan);2)無(wu)機(ji)玻(bo)璃鋼風管(guan)(guan)(guan)(guan);3)復合玻(bo)纖板風管(guan)(guan)(guan)(guan);4)纖維織物風管(guan)(guan)(guan)(guan)。鍍鋅(xin)薄(bo)鋼板風管(guan)(guan)(guan)(guan):早(zao)使用的(de)(de)(de)風管(guan)(guan)(guan)(guan),采用鍍鋅(xin)薄(bo)鋼板制(zhi)作(zuo)(zuo),適合含濕量小的(de)(de)(de)一般(ban)性氣(qi)體的(de)(de)(de)輸送(song),有易(yi)生銹,無(wu)保(bao)溫和(he)消(xiao)聲(sheng)功能(neng)(neng),制(zhi)作(zuo)(zuo)安裝(zhuang)(zhuang)周期(qi)長的(de)(de)(de)特點。無(wu)機(ji)玻(bo)璃鋼風管(guan)(guan)(guan)(guan):較新(xin)的(de)(de)(de)風管(guan)(guan)(guan)(guan)類型,采用玻(bo)璃纖維增強無(wu)機(ji)材(cai)料制(zhi)作(zuo)(zuo),遇火不燃、耐腐蝕、份量重,硬(ying)度大但較脆,受(shou)自重影響(xiang)易(yi)變形酥裂(lie),無(wu)保(bao)溫和(he)消(xiao)聲(sheng)性能(neng)(neng),制(zhi)作(zuo)(zuo)安裝(zhuang)(zhuang)周期(qi)長。
一、對通風管道制作的要求進行檢查:檢查通風管道穿越防護密閉墻、密閉墻的預埋密閉穿墻短管。通風預埋密閉短管采用厚度不小于3mm鋼板機械卷制成形(其厚度還應根據預埋管管徑大小確定,使預埋管不致變形),高品質風機通風管防爆超壓排氣活門的預埋短管其厚度為6mm,密閉短管中間應設密閉肋,密閉肋厚度為5mm,密閉肋高度為50mm,密閉肋與短管應雙面滿焊、焊縫嚴密。密閉穿墻短管兩端深處墻面的長度應大于100mm,管道內外部除與混凝土接觸部分外均應刷兩道防銹漆。二、對風管連接處制作的要求進行檢查,云南批發對染毒區的(de)(de)通風管(guan)(guan)道連(lian)(lian)(lian)(lian)接(jie)(jie)方法及密封進行檢(jian)查。如無設(she)計要求,其(qi)風管(guan)(guan)厚度(du)應(ying)采(cai)(cai)用大于(yu)等于(yu)3mm的(de)(de)鋼(gang)板焊接(jie)(jie)制作而成。風管(guan)(guan)與(yu)風管(guan)(guan)連(lian)(lian)(lian)(lian)接(jie)(jie)應(ying)采(cai)(cai)用焊接(jie)(jie)連(lian)(lian)(lian)(lian)接(jie)(jie)。通風管(guan)(guan)道與(yu)密閉閥門的(de)(de)連(lian)(lian)(lian)(lian)接(jie)(jie)應(ying)采(cai)(cai)用帶密封槽(cao)的(de)(de)法蘭(lan)(lan)連(lian)(lian)(lian)(lian)接(jie)(jie),其(qi)法蘭(lan)(lan)面應(ying)經機床(chuang)車削(xue)加工,保證接(jie)(jie)觸應(ying)平整(zheng),法蘭(lan)(lan)面有(you)(you)1~2mm深的(de)(de)90°密封槽(cao);風管(guan)(guan)與(yu)設(she)備連(lian)(lian)(lian)(lian)接(jie)(jie)法蘭(lan)(lan)之間應(ying)采(cai)(cai)用整(zheng)體橡膠法蘭(lan)(lan)墊圈,防爆超(chao)壓(ya)排氣活門法蘭(lan)(lan)連(lian)(lian)(lian)(lian)接(jie)(jie)填料采(cai)(cai)用5mm整(zheng)張橡膠墊圈密封(不(bu)得(de)有(you)(you)拼(pin)(pin)縫),其(qi)他染毒區風管(guan)(guan)連(lian)(lian)(lian)(lian)接(jie)(jie)及法蘭(lan)(lan)與(yu)設(she)備連(lian)(lian)(lian)(lian)接(jie)(jie)采(cai)(cai)用4~5mm整(zheng)張橡膠墊圈密封(不(bu)得(de)有(you)(you)拼(pin)(pin)縫),連(lian)(lian)(lian)(lian)接(jie)(jie)處不(bu)得(de)有(you)(you)漏縫現象。
雖然在商(shang)業建筑(zhu)(zhu)與(yu)多(duo)種居住(zhu)房的(de)(de)(de)(de)被(bei)動消防(fang)(fang)中(zhong)(zhong),防(fang)(fang)火閥(fa)是關(guan)鍵組件,但在對建筑(zhu)(zhu)和其居住(zhu)者的(de)(de)(de)(de)安全保護(hu)中(zhong)(zhong),很多(duo)管(guan)理者沒有(you)意識到(dao)防(fang)(fang)火閥(fa)的(de)(de)(de)(de)作用(yong)以及規定時(shi)間間隔(ge)內,防(fang)(fang)火閥(fa)的(de)(de)(de)(de)檢測、清潔及維護(hu)的(de)(de)(de)(de)重要意義。在商(shang)業建筑(zhu)(zhu)中(zhong)(zhong)的(de)(de)(de)(de)建造中(zhong)(zhong)我(wo)們總會(hui)遇到(dao)一(yi)些麻(ma)煩,試圖在能源效率與(yu)室內空(kong)(kong)氣(qi)質量之間尋求平(ping)衡就是其中(zhong)(zhong)。大多(duo)商(shang)業建筑(zhu)(zhu)通(tong)(tong)過(guo)機械通(tong)(tong)風(feng)或空(kong)(kong)調(diao)系(xi)統(tong)解決(jue),能夠測量和控制整個(ge)建筑(zhu)(zhu)的(de)(de)(de)(de)空(kong)(kong)氣(qi)變化。在通(tong)(tong)風(feng)管(guan)道系(xi)統(tong)的(de)(de)(de)(de)安裝上就存在上面提到(dao)的(de)(de)(de)(de)問題———如何在延遲(chi)或阻(zu)止火災蔓延的(de)(de)(de)(de)建筑(zhu)(zhu)防(fang)(fang)火分隔(ge)與(yu)所允許空(kong)(kong)氣(qi)自(zi)(zi)由(you)流通(tong)(tong)的(de)(de)(de)(de)需(xu)要之間達到(dao)平(ping)衡。滿足(zu)空(kong)(kong)氣(qi)自(zi)(zi)由(you)流通(tong)(tong)需(xu)要不可避免地再引入一(yi)條通(tong)(tong)道,而這卻加快了火勢的(de)(de)(de)(de)蔓延———利用(yong)通(tong)(tong)風(feng)管(guan)道系(xi)統(tong)使用(yong)的(de)(de)(de)(de)通(tong)(tong)道。毫無疑問,這中(zhong)(zhong)斷了防(fang)(fang)火分隔(ge),充(chong)當了建筑(zhu)(zhu)被(bei)動消防(fang)(fang)護(hu)面的(de)(de)(de)(de)“裂口”。
消(xiao)(xiao)防(fang)(fang)排(pai)煙(yan)(yan)風(feng)(feng)機首先應(ying)該滿足(zu)(zu)溫(wen)度(du)和時(shi)間的(de)(de)特性(xing)(xing),即國家規定(ding)280℃/0.5h;其(qi)次,在一般環境溫(wen)度(du)下,可(ke)以保證有效的(de)(de)排(pai)煙(yan)(yan)控制量。此(ci)外還要求消(xiao)(xiao)防(fang)(fang)排(pai)煙(yan)(yan)風(feng)(feng)機能(neng)夠進(jin)行(xing)周(zhou)期性(xing)(xing)的(de)(de)實驗,能(neng)夠發現其(qi)中的(de)(de)不(bu)足(zu)(zu),并加以改進(jin);可(ke)以適用(yong)(yong)各種通風(feng)(feng)要求的(de)(de)管道(dao),便(bian)于(yu)安裝(zhuang)與使用(yong)(yong)。消(xiao)(xiao)防(fang)(fang)排(pai)煙(yan)(yan)風(feng)(feng)機的(de)(de)性(xing)(xing)能(neng)優(you)(you)良(liang)、耐高(gao)(gao)溫(wen)性(xing)(xing)能(neng)良(liang)好、效率(lv)高(gao)(gao)、占(zhan)地(di)比離心(xin)風(feng)(feng)機少(shao)、高(gao)(gao)溫(wen)性(xing)(xing)能(neng)優(you)(you)良(liang)。消(xiao)(xiao)防(fang)(fang)排(pai)煙(yan)(yan)風(feng)(feng)機能(neng)在300℃高(gao)(gao)溫(wen)條件(jian)下連(lian)(lian)續(xu)運(yun)行(xing)60分鐘以上,100℃溫(wen)度(du)條件(jian)下連(lian)(lian)續(xu)20小(xiao)時(shi)不(bu)損壞,應(ying)用(yong)(yong)范(fan)圍(wei)廣(guang),可(ke)根據高(gao)(gao)級(ji)民用(yong)(yong)建筑(zhu)的(de)(de)不(bu)同要求,采用(yong)(yong)變速(su)或(huo)多速(su)的(de)(de)驅(qu)動(dong)型式(shi),消(xiao)(xiao)防(fang)(fang)排(pai)煙(yan)(yan)風(feng)(feng)機廣(guang)泛應(ying)用(yong)(yong)于(yu)高(gao)(gao)級(ji)民用(yong)(yong)建筑(zhu)、烤(kao)箱(xiang)、地(di)下車庫、隧(sui)道(dao)等(deng)場合。安裝(zhuang)方便(bian),可(ke)直接和墻壁安裝(zhuang),安裝(zhuang)可(ke)采用(yong)(yong)垂直式(shi)、水平(ping)式(shi)或(huo)吊(diao)裝(zhuang)式(shi),很(hen)大程度(du)上節省了占(zhan)地(di)面積。