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消防排煙風機風量與送風機風量計算方法是根據建筑面積來確定的,每個防煙分區都需要獨立計算其排煙量,當排煙風機擔負一個防煙分區的時候可按平方米面積不小于60m3/h計算,擔負多個防煙分區則按平方米面積不小于120m3/h計算。送風量按排煙量的50%計算。每個防煙分區不應大于500平方。常見的消防防排煙系統中,排煙量一般根據大防煙分區面積500*120等于60000立方每小時計算,在風機設計排煙量的時候要注意漏風量,一般可按小漏風量10%計算。例如:當建筑面積為1000平方時,風機廠家需(xu)要(yao)設置兩個防煙(yan)分區(qu),每個防煙(yan)分區(qu)的大面積為(wei)500平方,排(pai)煙(yan)量是500*1203/h=600003/h,再加(jia)上小漏風(feng)量10%為(wei)60003/h,總排(pai)煙(yan)量應為(wei)660003/h,其中送風(feng)量為(wei)排(pai)煙(yan)量的50%應為(wei)330003/h。
風(feng)機(ji)(ji)廣(guang)泛(fan)地應用(yong)(yong)于各(ge)個工(gong)業(ye)部門(men),一般講,離心式(shi)(shi)風(feng)機(ji)(ji)適用(yong)(yong)于小(xiao)流量、高(gao)壓力(li)的(de)(de)(de)場所,而軸流式(shi)(shi)風(feng)機(ji)(ji)則常(chang)用(yong)(yong)于大流量、低壓力(li)的(de)(de)(de)情(qing)況(kuang),應根(gen)據不同的(de)(de)(de)情(qing)況(kuang)選有不同的(de)(de)(de)風(feng)機(ji)(ji)分類。1鍋(guo)(guo)(guo)(guo)爐用(yong)(yong)風(feng)機(ji)(ji),鍋(guo)(guo)(guo)(guo)爐用(yong)(yong)風(feng)機(ji)(ji)根(gen)據鍋(guo)(guo)(guo)(guo)爐的(de)(de)(de)規格可選用(yong)(yong)離心式(shi)(shi)或軸流式(shi)(shi)。又按它的(de)(de)(de)作用(yong)(yong)分為鍋(guo)(guo)(guo)(guo)爐風(feng)機(ji)(ji)—向鍋(guo)(guo)(guo)(guo)爐內輸送(song)空氣(qi);鍋(guo)(guo)(guo)(guo)爐引風(feng)機(ji)(ji)把鍋(guo)(guo)(guo)(guo)爐內的(de)(de)(de)煙氣(qi)抽走(zou)。2通(tong)風(feng)換氣(qi)用(yong)(yong)風(feng)機(ji)(ji),這(zhe)類風(feng)機(ji)(ji)一般是(shi)供工(gong)廠及各(ge)種建筑物通(tong)風(feng)換氣(qi)及采(cai)(cai)暖通(tong)風(feng)用(yong)(yong),要(yao)求壓力(li)不高(gao),但噪聲要(yao)求要(yao)低,可采(cai)(cai)用(yong)(yong)離心式(shi)(shi)或軸流式(shi)(shi)風(feng)機(ji)(ji)。
一、對(dui)通(tong)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)制(zhi)作(zuo)的(de)要(yao)求(qiu)進(jin)行檢(jian)查:檢(jian)查通(tong)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)穿(chuan)越防(fang)護密(mi)閉(bi)墻、密(mi)閉(bi)墻的(de)預(yu)埋密(mi)閉(bi)穿(chuan)墻短(duan)管(guan)(guan)(guan)(guan)(guan)。通(tong)風(feng)(feng)預(yu)埋密(mi)閉(bi)短(duan)管(guan)(guan)(guan)(guan)(guan)采用(yong)(yong)(yong)厚度(du)(du)不小(xiao)于(yu)(yu)(yu)3mm鋼板(ban)機械卷(juan)制(zhi)成(cheng)形(xing)(其(qi)厚度(du)(du)還應(ying)(ying)(ying)根據預(yu)埋管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)徑大(da)小(xiao)確定(ding),使預(yu)埋管(guan)(guan)(guan)(guan)(guan)不致變形(xing)),防(fang)爆超壓(ya)排氣活門的(de)預(yu)埋短(duan)管(guan)(guan)(guan)(guan)(guan)其(qi)厚度(du)(du)為6mm,密(mi)閉(bi)短(duan)管(guan)(guan)(guan)(guan)(guan)中間應(ying)(ying)(ying)設(she)密(mi)閉(bi)肋(lei)(lei),密(mi)閉(bi)肋(lei)(lei)厚度(du)(du)為5mm,密(mi)閉(bi)肋(lei)(lei)高度(du)(du)為50mm,密(mi)閉(bi)肋(lei)(lei)與短(duan)管(guan)(guan)(guan)(guan)(guan)應(ying)(ying)(ying)雙面(mian)滿(man)焊(han)、焊(han)縫(feng)嚴密(mi)。密(mi)閉(bi)穿(chuan)墻短(duan)管(guan)(guan)(guan)(guan)(guan)兩(liang)(liang)端(duan)深處(chu)(chu)墻面(mian)的(de)長度(du)(du)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)100mm,管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)內(nei)外(wai)(wai)部除與混凝土接(jie)(jie)觸部分外(wai)(wai)均應(ying)(ying)(ying)刷兩(liang)(liang)道(dao)(dao)防(fang)銹漆。二、對(dui)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)連(lian)(lian)(lian)接(jie)(jie)處(chu)(chu)制(zhi)作(zuo)的(de)要(yao)求(qiu)進(jin)行檢(jian)查,對(dui)染毒(du)區的(de)通(tong)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)連(lian)(lian)(lian)接(jie)(jie)方(fang)法(fa)(fa)(fa)(fa)及密(mi)封(feng)(feng)進(jin)行檢(jian)查。如無設(she)計要(yao)求(qiu),其(qi)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)厚度(du)(du)應(ying)(ying)(ying)采用(yong)(yong)(yong)大(da)于(yu)(yu)(yu)等于(yu)(yu)(yu)3mm的(de)鋼板(ban)焊(han)接(jie)(jie)制(zhi)作(zuo)而成(cheng)。風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)與風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)連(lian)(lian)(lian)接(jie)(jie)應(ying)(ying)(ying)采用(yong)(yong)(yong)焊(han)接(jie)(jie)連(lian)(lian)(lian)接(jie)(jie)。通(tong)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)道(dao)(dao)與密(mi)閉(bi)閥門的(de)連(lian)(lian)(lian)接(jie)(jie)應(ying)(ying)(ying)采用(yong)(yong)(yong)帶密(mi)封(feng)(feng)槽的(de)法(fa)(fa)(fa)(fa)蘭(lan)連(lian)(lian)(lian)接(jie)(jie),其(qi)法(fa)(fa)(fa)(fa)蘭(lan)面(mian)應(ying)(ying)(ying)經機床車削(xue)加工,保證(zheng)接(jie)(jie)觸應(ying)(ying)(ying)平整(zheng)(zheng)(zheng),法(fa)(fa)(fa)(fa)蘭(lan)面(mian)有(you)1~2mm深的(de)90°密(mi)封(feng)(feng)槽;風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)與設(she)備(bei)連(lian)(lian)(lian)接(jie)(jie)法(fa)(fa)(fa)(fa)蘭(lan)之(zhi)間應(ying)(ying)(ying)采用(yong)(yong)(yong)整(zheng)(zheng)(zheng)體橡(xiang)膠(jiao)(jiao)法(fa)(fa)(fa)(fa)蘭(lan)墊(dian)(dian)圈(quan),防(fang)爆超壓(ya)排氣活門法(fa)(fa)(fa)(fa)蘭(lan)連(lian)(lian)(lian)接(jie)(jie)填料采用(yong)(yong)(yong)5mm整(zheng)(zheng)(zheng)張(zhang)橡(xiang)膠(jiao)(jiao)墊(dian)(dian)圈(quan)密(mi)封(feng)(feng)(不得(de)有(you)拼縫(feng)),其(qi)他染毒(du)區風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)連(lian)(lian)(lian)接(jie)(jie)及法(fa)(fa)(fa)(fa)蘭(lan)與設(she)備(bei)連(lian)(lian)(lian)接(jie)(jie)采用(yong)(yong)(yong)4~5mm整(zheng)(zheng)(zheng)張(zhang)橡(xiang)膠(jiao)(jiao)墊(dian)(dian)圈(quan)密(mi)封(feng)(feng)(不得(de)有(you)拼縫(feng)),連(lian)(lian)(lian)接(jie)(jie)處(chu)(chu)不得(de)有(you)漏縫(feng)現象。
按照(zhao)氣流(liu)(liu)(liu)(liu)(liu)運(yun)動(dong)來進行風(feng)(feng)(feng)機(ji)(ji)分類的(de)(de)有(you):1離(li)心(xin)風(feng)(feng)(feng)機(ji)(ji),氣流(liu)(liu)(liu)(liu)(liu)進入(ru)(ru)旋轉的(de)(de)葉(xie)(xie)片通道,在(zai)離(li)心(xin)力作用(yong)下氣體被壓縮(suo)并沿著半徑方(fang)向(xiang)流(liu)(liu)(liu)(liu)(liu)動(dong)。2軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)(liu)風(feng)(feng)(feng)機(ji)(ji)氣流(liu)(liu)(liu)(liu)(liu)軸(zhou)(zhou)(zhou)向(xiang)進入(ru)(ru)風(feng)(feng)(feng)機(ji)(ji)葉(xie)(xie)輪后(hou),在(zai)旋轉葉(xie)(xie)片的(de)(de)流(liu)(liu)(liu)(liu)(liu)道中沿著軸(zhou)(zhou)(zhou)線方(fang)向(xiang)流(liu)(liu)(liu)(liu)(liu)動(dong)的(de)(de)風(feng)(feng)(feng)機(ji)(ji)。相對于離(li)心(xin)風(feng)(feng)(feng)機(ji)(ji),軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)(liu)風(feng)(feng)(feng)機(ji)(ji)具有(you)流(liu)(liu)(liu)(liu)(liu)量大、體積小、壓頭低(di)的(de)(de)特點(dian),用(yong)于有(you)灰塵(chen)和腐蝕(shi)性氣體場合時需注(zhu)意。3斜流(liu)(liu)(liu)(liu)(liu)式(shi)(shi)(混流(liu)(liu)(liu)(liu)(liu)式(shi)(shi))風(feng)(feng)(feng)機(ji)(ji),在(zai)風(feng)(feng)(feng)機(ji)(ji)的(de)(de)葉(xie)(xie)輪中,氣流(liu)(liu)(liu)(liu)(liu)的(de)(de)方(fang)向(xiang)處于軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)(liu)式(shi)(shi)之間,近似(si)沿錐流(liu)(liu)(liu)(liu)(liu)動(dong),故可稱為斜流(liu)(liu)(liu)(liu)(liu)式(shi)(shi)(混流(liu)(liu)(liu)(liu)(liu)式(shi)(shi))風(feng)(feng)(feng)機(ji)(ji)。這種風(feng)(feng)(feng)機(ji)(ji)的(de)(de)壓力系數比軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)(liu)式(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)高,而流(liu)(liu)(liu)(liu)(liu)量系數比離(li)心(xin)式(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)高。
通風(feng)(feng)(feng)管(guan)(guan)道(dao)(dao)(dao)安裝(zhuang)(zhuang)(zhuang)程序:(1)風(feng)(feng)(feng)管(guan)(guan)組裝(zhuang)(zhuang)(zhuang):當風(feng)(feng)(feng)管(guan)(guan)較(jiao)短(duan)時,可(ke)(ke)一(yi)次在(zai)地(di)(di)面組裝(zhuang)(zhuang)(zhuang)而(er)成,當風(feng)(feng)(feng)管(guan)(guan)較(jiao)長(chang)時,可(ke)(ke)視安裝(zhuang)(zhuang)(zhuang)場地(di)(di)的(de)(de)(de)(de)情況,在(zai)地(di)(di)面分段(duan)組裝(zhuang)(zhuang)(zhuang)。組裝(zhuang)(zhuang)(zhuang)時應(ying)(ying)(ying)(ying)盡量(liang)調(diao)整(zheng)風(feng)(feng)(feng)道(dao)(dao)(dao)的(de)(de)(de)(de)中心度(du)和(he)水平(ping)度(du),避免風(feng)(feng)(feng)管(guan)(guan)扭曲或上(shang)下起波,左右(you)擺龍(long),每段(duan)風(feng)(feng)(feng)道(dao)(dao)(dao)不宜超過10m.組裝(zhuang)(zhuang)(zhuang)時,墊片應(ying)(ying)(ying)(ying)墊平(ping),法蘭螺栓應(ying)(ying)(ying)(ying)均勻擰緊,螺母帽(mao)均朝向同一(yi)方(fang)(fang)向。(2)風(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位:風(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位前應(ying)(ying)(ying)(ying)檢(jian)查全部支(zhi)架的(de)(de)(de)(de)水乎度(du)和(he)標高、檢(jian)查支(zhi)架的(de)(de)(de)(de)牢固(gu)(gu)程度(du),風(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位可(ke)(ke)采用(yong)(yong)(yong)直(zhi)(zhi)(zhi)接和(he)吊(diao)具兩種方(fang)(fang)法。對風(feng)(feng)(feng)管(guan)(guan)斷(duan)面較(jiao)小,又位置較(jiao)低的(de)(de)(de)(de)可(ke)(ke)采用(yong)(yong)(yong)人(ren)工(gong)就(jiu)(jiu)(jiu)位方(fang)(fang)法,只(zhi)需(xu)搭(da)設簡易腳手架即可(ke)(ke)。當風(feng)(feng)(feng)管(guan)(guan)斷(duan)面較(jiao)大(da)且管(guan)(guan)段(duan)較(jiao)長(chang)時,可(ke)(ke)采用(yong)(yong)(yong)滑輪、倒(dao)鏈(lian)、大(da)繩等方(fang)(fang)法吊(diao)裝(zhuang)(zhuang)(zhuang)。世紀星介紹(shao)為了便于風(feng)(feng)(feng)道(dao)(dao)(dao)就(jiu)(jiu)(jiu)位,一(yi)般(ban)多采用(yong)(yong)(yong)將風(feng)(feng)(feng)道(dao)(dao)(dao)吊(diao)在(zai)腳手架上(shang),然后(hou)再將其(qi)抬(tai)放在(zai)風(feng)(feng)(feng)道(dao)(dao)(dao)支(zhi)架上(shang)的(de)(de)(de)(de)方(fang)(fang)法。腳手架應(ying)(ying)(ying)(ying)沿其(qi)風(feng)(feng)(feng)道(dao)(dao)(dao)長(chang)度(du)方(fang)(fang)向搭(da)設,高度(du)和(he)位置應(ying)(ying)(ying)(ying)適合施工(gong)操作,吊(diao)裝(zhuang)(zhuang)(zhuang)順序應(ying)(ying)(ying)(ying)先(xian)干管(guan)(guan)后(hou)支(zhi)、立(li)管(guan)(guan),吊(diao)起時,吊(diao)點(dian)應(ying)(ying)(ying)(ying)牢固(gu)(gu),兩吊(diao)點(dian)應(ying)(ying)(ying)(ying)均勻受力。垂直(zhi)(zhi)(zhi)風(feng)(feng)(feng)管(guan)(guan)可(ke)(ke)采用(yong)(yong)(yong)人(ren)工(gong)和(he)大(da)繩輔助就(jiu)(jiu)(jiu)位。調(diao)整(zheng)風(feng)(feng)(feng)管(guan)(guan)保證垂直(zhi)(zhi)(zhi)度(du)要(yao)求。(3)風(feng)(feng)(feng)道(dao)(dao)(dao)調(diao)直(zhi)(zhi)(zhi):就(jiu)(jiu)(jiu)位在(zai)支(zhi)架上(shang)的(de)(de)(de)(de)風(feng)(feng)(feng)道(dao)(dao)(dao),應(ying)(ying)(ying)(ying)撥正位置,調(diao)整(zheng)風(feng)(feng)(feng)道(dao)(dao)(dao)橫平(ping)豎直(zhi)(zhi)(zhi),然后(hou)再按圖集要(yao)求固(gu)(gu)定。