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消(xiao)防(fang)排(pai)煙(yan)(yan)(yan)(yan)風(feng)(feng)機風(feng)(feng)量(liang)(liang)(liang)(liang)與送(song)風(feng)(feng)機風(feng)(feng)量(liang)(liang)(liang)(liang)計(ji)(ji)算方法是(shi)根據(ju)建(jian)筑(zhu)面(mian)(mian)積(ji)來確定(ding)的(de)(de),每個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)都需(xu)要獨立計(ji)(ji)算其(qi)(qi)排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang),當排(pai)煙(yan)(yan)(yan)(yan)風(feng)(feng)機擔負(fu)一(yi)個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)的(de)(de)時候可(ke)按平(ping)方米面(mian)(mian)積(ji)不(bu)小于60m3/h計(ji)(ji)算,擔負(fu)多個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)則按平(ping)方米面(mian)(mian)積(ji)不(bu)小于120m3/h計(ji)(ji)算。送(song)風(feng)(feng)量(liang)(liang)(liang)(liang)按排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)的(de)(de)50%計(ji)(ji)算。每個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)不(bu)應大(da)于500平(ping)方。常(chang)見的(de)(de)消(xiao)防(fang)防(fang)排(pai)煙(yan)(yan)(yan)(yan)系(xi)統(tong)中(zhong),排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)一(yi)般根據(ju)大(da)防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)面(mian)(mian)積(ji)500*120等于60000立方每小時計(ji)(ji)算,在(zai)設(she)計(ji)(ji)排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)的(de)(de)時候要注意漏風(feng)(feng)量(liang)(liang)(liang)(liang),一(yi)般可(ke)按小漏風(feng)(feng)量(liang)(liang)(liang)(liang)10%計(ji)(ji)算。例如(ru):當建(jian)筑(zhu)面(mian)(mian)積(ji)為(wei)1000平(ping)方時,需(xu)要設(she)置兩個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu),每個防(fang)煙(yan)(yan)(yan)(yan)分(fen)(fen)區(qu)的(de)(de)大(da)面(mian)(mian)積(ji)為(wei)500平(ping)方,排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)是(shi)500*1203/h=600003/h,再加上小漏風(feng)(feng)量(liang)(liang)(liang)(liang)10%為(wei)60003/h,總排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)應為(wei)660003/h,其(qi)(qi)中(zhong)送(song)風(feng)(feng)量(liang)(liang)(liang)(liang)為(wei)排(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)(liang)(liang)的(de)(de)50%應為(wei)330003/h。
什么是風(feng)(feng)(feng)(feng)管(guan),常(chang)見風(feng)(feng)(feng)(feng)管(guan)有(you)(you)哪些類型,風(feng)(feng)(feng)(feng)管(guan)主要(yao)指(zhi)中(zhong)(zhong)央空調(diao)(diao)系統的(de)通風(feng)(feng)(feng)(feng)管(guan)道(dao),它常(chang)常(chang)被忽視(shi),但卻是空調(diao)(diao)系統的(de)重要(yao)組成(cheng)部分(fen)。風(feng)(feng)(feng)(feng)管(guan)是由薄鋼(gang)板(ban)、鋁板(ban)、硬聚氯乙烯(xi)板(ban)、玻璃(li)鋼(gang)以(yi)及(ji)(ji)其(qi)它復合材料等制(zhi)成(cheng)的(de),用于輸送空氣(qi)和空氣(qi)混(hun)合物(wu)的(de)各種管(guan)道(dao)的(de)總稱。1、按照材質(zhi)可分(fen)為(wei)(wei):金(jin)(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)、非金(jin)(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)。其(qi)中(zhong)(zhong):(1)金(jin)(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)又可分(fen)為(wei)(wei):鋼(gang)板(ban)風(feng)(feng)(feng)(feng)管(guan)、鋁板(ban)風(feng)(feng)(feng)(feng)管(guan)、不(bu)銹鋼(gang)風(feng)(feng)(feng)(feng)管(guan)等;(2)非金(jin)(jin)屬(shu)風(feng)(feng)(feng)(feng)管(guan)可以(yi)分(fen)為(wei)(wei):硬聚氯乙烯(xi)風(feng)(feng)(feng)(feng)管(guan)、有(you)(you)機玻璃(li)風(feng)(feng)(feng)(feng)管(guan)、無(wu)機玻璃(li)風(feng)(feng)(feng)(feng)管(guan)、玻璃(li)鋼(gang)風(feng)(feng)(feng)(feng)管(guan)以(yi)及(ji)(ji)其(qi)它復合材料風(feng)(feng)(feng)(feng)管(guan)等;2、按照風(feng)(feng)(feng)(feng)管(guan)外(wai)形(xing)(xing)可分(fen)為(wei)(wei):圓形(xing)(xing)風(feng)(feng)(feng)(feng)管(guan)、矩(ju)形(xing)(xing)風(feng)(feng)(feng)(feng)管(guan);3、按照通風(feng)(feng)(feng)(feng)空調(diao)(diao)系統工作壓(ya)(ya)力(li)可分(fen)為(wei)(wei):高壓(ya)(ya)風(feng)(feng)(feng)(feng)管(guan)、中(zhong)(zhong)壓(ya)(ya)風(feng)(feng)(feng)(feng)管(guan)、低壓(ya)(ya)風(feng)(feng)(feng)(feng)管(guan)三個類別,
1,通(tong)(tong)(tong)風風管(guan)安(an)(an)裝(zhuang)在(zai)支架上,應設托座(zuo)。2,通(tong)(tong)(tong)風風管(guan)如有穿出屋(wu)面(mian)外部分(fen),應設置防(fang)雨罩。3,通(tong)(tong)(tong)風風管(guan)采用(yong)無法蘭(lan)連時,接(jie)口處應嚴(yan)密(mi)牢固。通(tong)(tong)(tong)風風管(guan)連接(jie)兩(liang)平面(mian)應平直,不得(de)錯位及扭曲。4,輸送易(yi)產生冷凝水的(de)通(tong)(tong)(tong)風風管(guan),安(an)(an)裝(zhuang)應設計(ji)坡度。通(tong)(tong)(tong)風風管(guan)底部不能有縱向的(de)接(jie)縫, 如必須(xu)有接(jie)縫,則(ze)應采用(yong)密(mi)封方(fang)式。通(tong)(tong)(tong)風管(guan)道(dao)(dao)安(an)(an)裝(zhuang)完(wan)畢后,應進行(xing)嚴(yan)密(mi)性(xing)試驗(yan),如發現異(yi)常情況(kuang),通(tong)(tong)(tong)風管(guan)道(dao)(dao)的(de)制作、安(an)(an)裝(zhuang)、檢驗(yan)和試驗(yan),是一個連貫的(de)工程,做到(dao)安(an)(an)全適用(yong),經濟(ji)合理,方(fang)便施工,確保通(tong)(tong)(tong)風管(guan)道(dao)(dao)的(de)工程質量。
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,值得信賴的電動防火閥應用范圍廣,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。電動防火閥價格安(an)裝(zhuang)(zhuang)(zhuang)方便,可直接(jie)和墻壁安(an)裝(zhuang)(zhuang)(zhuang),安(an)裝(zhuang)(zhuang)(zhuang)可采用垂直式(shi)、水(shui)平式(shi)或吊裝(zhuang)(zhuang)(zhuang)式(shi),很(hen)大程度上節省了占(zhan)地面(mian)積。
1、 薄(bo)鋼板矩(ju)(ju)形(xing)風(feng)(feng)(feng)管(guan)(guan)(guan)的(de)剛度不(bu)夠,表現(xian)(xian)形(xing)式(shi)(shi):風(feng)(feng)(feng)管(guan)(guan)(guan)的(de)大邊(bian)(bian)上下有(you)(you)不(bu)同程(cheng)度的(de)下沉(chen),兩(liang)側面(mian)(mian)(mian)(mian)小(xiao)邊(bian)(bian)稍向外凸(tu)出,有(you)(you)明顯(xian)的(de)變(bian)形(xing)。對(dui)產生(sheng)(sheng)的(de)原(yuan)因分析:① 制作(zuo)風(feng)(feng)(feng)管(guan)(guan)(guan)的(de)鋼板厚度不(bu)符合施工及(ji)(ji)(ji)驗(yan)收規范的(de)要求;② 咬口(kou)(kou)的(de)形(xing)式(shi)(shi)選擇不(bu)當;③ 沒有(you)(you)按照《施工及(ji)(ji)(ji)驗(yan)收規范》要求,對(dui)于邊(bian)(bian)長≥630 mm或保溫風(feng)(feng)(feng)管(guan)(guan)(guan)≥800 mm,其管(guan)(guan)(guan)長在(zai)1 200mm以上,均應采取加(jia)固措施。2 、薄(bo)鋼板矩(ju)(ju)形(xing)風(feng)(feng)(feng)管(guan)(guan)(guan)扭曲、翹角(jiao),表現(xian)(xian)形(xing)式(shi)(shi):風(feng)(feng)(feng)管(guan)(guan)(guan)表面(mian)(mian)(mian)(mian)不(bu)平;對(dui)角(jiao)線不(bu)相(xiang)(xiang)等(deng);相(xiang)(xiang)鄰表面(mian)(mian)(mian)(mian)互不(bu)垂直;兩(liang)相(xiang)(xiang)對(dui)表面(mian)(mian)(mian)(mian)不(bu)平行及(ji)(ji)(ji)兩(liang)管(guan)(guan)(guan)端平面(mian)(mian)(mian)(mian)不(bu)平行等(deng)。產生(sheng)(sheng)的(de)原(yuan)因分析:① 矩(ju)(ju)形(xing)板料(liao)下料(liao)后(hou),未對(dui)四個角(jiao)進行嚴格(ge)的(de)角(jiao)方測量;② 風(feng)(feng)(feng)管(guan)(guan)(guan)的(de)大邊(bian)(bian)或小(xiao)邊(bian)(bian)的(de)兩(liang)個相(xiang)(xiang)對(dui)面(mian)(mian)(mian)(mian)的(de)板料(liao)長度和(he)寬度不(bu)相(xiang)(xiang)等(deng);③ 風(feng)(feng)(feng)管(guan)(guan)(guan)的(de)四個角(jiao)處(chu)的(de)咬口(kou)(kou)寬度不(bu)相(xiang)(xiang)等(deng);④ 手(shou)工咬口(kou)(kou)合縫受(shou)力(li)不(bu)均。