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1、消(xiao)聲(sheng)(sheng)(sheng)性(xing)(xing)能(neng)(neng):鍍(du)(du)(du)鋅(xin)薄(bo)鋼板(ban)風(feng)(feng)管(guan):無(wu)(wu)消(xiao)聲(sheng)(sheng)(sheng)性(xing)(xing)能(neng)(neng),自身震動會(hui)產生聲(sheng)(sheng)(sheng)音,必(bi)須(xu)加(jia)裝消(xiao)聲(sheng)(sheng)(sheng)器(qi)。無(wu)(wu)機(ji)(ji)玻(bo)(bo)(bo)璃(li)鋼風(feng)(feng)管(guan):無(wu)(wu)消(xiao)聲(sheng)(sheng)(sheng)性(xing)(xing)能(neng)(neng),隔聲(sheng)(sheng)(sheng)性(xing)(xing)能(neng)(neng)優于鍍(du)(du)(du)鋅(xin)薄(bo)鋼板(ban)風(feng)(feng)管(guan),必(bi)須(xu)加(jia)裝消(xiao)聲(sheng)(sheng)(sheng)器(qi)。復合(he)玻(bo)(bo)(bo)纖板(ban)風(feng)(feng)管(guan):其管(guan)壁是一(yi)種多孔性(xing)(xing)吸(xi)(xi)聲(sheng)(sheng)(sheng)材(cai)料,可(ke)(ke)省去專用消(xiao)聲(sheng)(sheng)(sheng)器(qi)。纖維織物風(feng)(feng)管(guan):其管(guan)壁為(wei)柔(rou)性(xing)(xing)纖維織物,本身就是聲(sheng)(sheng)(sheng)音的(de)不(bu)(bu)良(liang)導(dao)體和吸(xi)(xi)收體,自身不(bu)(bu)會(hui)產生聲(sheng)(sheng)(sheng)音,還(huan)可(ke)(ke)以(yi)一(yi)定(ding)程度(du)上吸(xi)(xi)收設備噪(zao)聲(sheng)(sheng)(sheng),隨著(zhu)管(guan)道的(de)延長(chang),效果更為(wei)明顯,可(ke)(ke)省去專用消(xiao)聲(sheng)(sheng)(sheng)器(qi)。2、保(bao)溫(wen)性(xing)(xing)能(neng)(neng):鍍(du)(du)(du)鋅(xin)薄(bo)鋼板(ban)風(feng)(feng)管(guan):導(dao)熱(re)系數(shu)(shu)很大(da)(為(wei)60.4 W/m?K),無(wu)(wu)保(bao)溫(wen)性(xing)(xing)能(neng)(neng),必(bi)須(xu)另外加(jia)包(bao)保(bao)溫(wen)層及保(bao)護層。無(wu)(wu)機(ji)(ji)玻(bo)(bo)(bo)璃(li)鋼風(feng)(feng)管(guan):導(dao)熱(re)系數(shu)(shu)大(da)(為(wei)0.5W/m?K),無(wu)(wu)保(bao)溫(wen)性(xing)(xing)能(neng)(neng)。復合(he)玻(bo)(bo)(bo)纖板(ban)風(feng)(feng)管(guan):導(dao)熱(re)系數(shu)(shu)小(平均溫(wen)度(du)24℃時(shi)小于1W/m?K),有(you)一(yi)定(ding)保(bao)溫(wen)性(xing)(xing)能(neng)(neng),不(bu)(bu)加(jia)裝保(bao)溫(wen)。
1、在設計靜壓箱時,如果按著規定的風速成進行設計,箱體將會很大;一般的靜壓箱長邊要寬出風管邊400mm,高度要寬出風管高度400mm ;2、選靜壓箱的經驗是5~10db(a)/m,推薦消防通風設備阻抗復合型(似乎空調通風系統一般都用這個)消聲器10~15db(a)/m;3、控制風速 在2.5以內 若體積太大可適當得提高一下風速 關于長度一般大于1米沒有其他得強制要求 ;4、高度×深度=靜壓箱截面面積,靜壓箱截面面積×2.5m/s=風機風量,至于高度和深度怎么配,自己把握吧;5、用你機組的風量L÷3米/秒,可得到你靜壓箱一個面的面積,然后你根據你房子的高度,假如是4米,可你的機組是2米高,在減去軟接頭大概0.5米,上面留高0.5米,那你的靜壓箱只有1米高,那你就可以確定寬度了,有了兩個數,第三個數也就容易確定了,這里主要的是要看自己的空調機房夠不夠位置,如果消防通風設備夠位置就盡(jin)量(liang)的(de)大點!!長度(du)的(de)計(ji)算方(fang)法也是(shi)一樣的(de),你(ni)知(zhi)道了寬(kuan)度(du),那么你(ni)的(de)寬(kuan)度(du)乘以(yi)長度(du)不(bu)也是(shi)有個(ge)面積嗎?這個(ge)面積也要等(deng)于L/3,不(bu)過在設計(ji)院里的(de)面風速(su)是(shi)取(qu)用(yong)2m/s的(de),如果夠空間,就做大點吧;
按照氣(qi)流(liu)(liu)(liu)(liu)運動(dong)來進(jin)行風(feng)(feng)(feng)機(ji)(ji)分類的有:1離(li)(li)心(xin)風(feng)(feng)(feng)機(ji)(ji),氣(qi)流(liu)(liu)(liu)(liu)進(jin)入旋轉的葉(xie)片通道,在離(li)(li)心(xin)力作用(yong)下(xia)氣(qi)體被壓(ya)縮并沿(yan)著(zhu)半徑方向(xiang)(xiang)流(liu)(liu)(liu)(liu)動(dong)。2軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)風(feng)(feng)(feng)機(ji)(ji)氣(qi)流(liu)(liu)(liu)(liu)軸(zhou)(zhou)(zhou)向(xiang)(xiang)進(jin)入風(feng)(feng)(feng)機(ji)(ji)葉(xie)輪后(hou),在旋轉葉(xie)片的流(liu)(liu)(liu)(liu)道中(zhong)沿(yan)著(zhu)軸(zhou)(zhou)(zhou)線方向(xiang)(xiang)流(liu)(liu)(liu)(liu)動(dong)的風(feng)(feng)(feng)機(ji)(ji)。相對于離(li)(li)心(xin)風(feng)(feng)(feng)機(ji)(ji),軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)風(feng)(feng)(feng)機(ji)(ji)具有流(liu)(liu)(liu)(liu)量大、體積小、壓(ya)頭低的特點,用(yong)于有灰(hui)塵和腐蝕(shi)性氣(qi)體場合時需注意。3斜流(liu)(liu)(liu)(liu)式(shi)(shi)(混(hun)流(liu)(liu)(liu)(liu)式(shi)(shi))風(feng)(feng)(feng)機(ji)(ji),在風(feng)(feng)(feng)機(ji)(ji)的葉(xie)輪中(zhong),氣(qi)流(liu)(liu)(liu)(liu)的方向(xiang)(xiang)處于軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)(shi)之間,近似(si)沿(yan)錐流(liu)(liu)(liu)(liu)動(dong),故可稱為(wei)斜流(liu)(liu)(liu)(liu)式(shi)(shi)(混(hun)流(liu)(liu)(liu)(liu)式(shi)(shi))風(feng)(feng)(feng)機(ji)(ji)。這種風(feng)(feng)(feng)機(ji)(ji)的壓(ya)力系(xi)數比軸(zhou)(zhou)(zhou)流(liu)(liu)(liu)(liu)式(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)高,而流(liu)(liu)(liu)(liu)量系(xi)數比離(li)(li)心(xin)式(shi)(shi)風(feng)(feng)(feng)機(ji)(ji)高。
1、 薄鋼板(ban)矩形風管(guan)(guan)(guan)的(de)(de)(de)(de)剛度(du)不夠,表現形式:風管(guan)(guan)(guan)的(de)(de)(de)(de)大(da)邊(bian)上下有不同(tong)程度(du)的(de)(de)(de)(de)下沉(chen),兩側面(mian)(mian)小邊(bian)稍(shao)向外凸(tu)出,有明顯的(de)(de)(de)(de)變形。對(dui)(dui)產(chan)生(sheng)的(de)(de)(de)(de)原因(yin)分(fen)析:① 制作風管(guan)(guan)(guan)的(de)(de)(de)(de)鋼板(ban)厚度(du)不符(fu)合施工及(ji)驗收(shou)規范的(de)(de)(de)(de)要(yao)求;② 咬口(kou)的(de)(de)(de)(de)形式選擇不當(dang);③ 沒有按照《施工及(ji)驗收(shou)規范》要(yao)求,對(dui)(dui)于邊(bian)長≥630 mm或保溫風管(guan)(guan)(guan)≥800 mm,其管(guan)(guan)(guan)長在1 200mm以上,均(jun)(jun)應(ying)采取加固(gu)措施。2 、薄鋼板(ban)矩形風管(guan)(guan)(guan)扭曲(qu)、翹角,表現形式:風管(guan)(guan)(guan)表面(mian)(mian)不平;對(dui)(dui)角線不相(xiang)等;相(xiang)鄰(lin)表面(mian)(mian)互不垂(chui)直;兩相(xiang)對(dui)(dui)表面(mian)(mian)不平行(xing)及(ji)兩管(guan)(guan)(guan)端平面(mian)(mian)不平行(xing)等。產(chan)生(sheng)的(de)(de)(de)(de)原因(yin)分(fen)析:① 矩形板(ban)料(liao)下料(liao)后,未對(dui)(dui)四個角進行(xing)嚴格的(de)(de)(de)(de)角方(fang)測量;② 風管(guan)(guan)(guan)的(de)(de)(de)(de)大(da)邊(bian)或小邊(bian)的(de)(de)(de)(de)兩個相(xiang)對(dui)(dui)面(mian)(mian)的(de)(de)(de)(de)板(ban)料(liao)長度(du)和寬(kuan)度(du)不相(xiang)等;③ 風管(guan)(guan)(guan)的(de)(de)(de)(de)四個角處的(de)(de)(de)(de)咬口(kou)寬(kuan)度(du)不相(xiang)等;④ 手工咬口(kou)合縫受力(li)不均(jun)(jun)。
1.風(feng)(feng)管(guan)(guan)(guan)(guan)程(cheng)度(du)安(an)裝,邊(bian)長(chang)(chang)尺(chi)寸(cun)小于(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)400mm,間(jian)距(ju)不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)大(da)(da)于(yu)(yu)(yu)4m;大(da)(da)于(yu)(yu)(yu)400mm,不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)大(da)(da)于(yu)(yu)(yu)3m;對于(yu)(yu)(yu)薄(bo)鋼板(ban)法蘭的(de)風(feng)(feng)管(guan)(guan)(guan)(guan),其(qi)支(zhi)、吊架間(jian)距(ju)不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)大(da)(da)于(yu)(yu)(yu)3m。2.風(feng)(feng)管(guan)(guan)(guan)(guan)垂直安(an)裝,間(jian)距(ju)不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)大(da)(da)于(yu)(yu)(yu)4m,單根直管(guan)(guan)(guan)(guan)至(zhi)少應(ying)(ying)(ying)(ying)有2個(ge)固(gu)(gu)定(ding)點。3.支(zhi)、吊架不(bu)(bu)(bu)宜(yi)設(she)置(zhi)在(zai)風(feng)(feng)口(kou)、閥(fa)門、檢討門及(ji)自控機構處,離風(feng)(feng)口(kou)或(huo)(huo)插接(jie)管(guan)(guan)(guan)(guan)的(de)距(ju)離不(bu)(bu)(bu)宜(yi)小于(yu)(yu)(yu)200mm。4.當程(cheng)度(du)懸吊的(de)主、干(gan)風(feng)(feng)管(guan)(guan)(guan)(guan)長(chang)(chang)度(du)超過20m時,應(ying)(ying)(ying)(ying)設(she)置(zhi)防(fang)止擺(bai)動(dong)固(gu)(gu)定(ding)點,每(mei)個(ge)系統(tong)(tong)不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)少于(yu)(yu)(yu)1個(ge)。5.防(fang)火閥(fa)直徑或(huo)(huo)長(chang)(chang)邊(bian)尺(chi)寸(cun)大(da)(da)于(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)630mm時,宜(yi)設(she)獨立支(zhi)、吊架。6.帶高(gao)效過濾器的(de)送風(feng)(feng)口(kou),應(ying)(ying)(ying)(ying)采取可分(fen)離調節高(gao)度(du)的(de)吊桿。金屬風(feng)(feng)管(guan)(guan)(guan)(guan)的(de)加(jia)固(gu)(gu):矩形風(feng)(feng)管(guan)(guan)(guan)(guan)邊(bian)長(chang)(chang)大(da)(da)于(yu)(yu)(yu)630mm、保溫風(feng)(feng)管(guan)(guan)(guan)(guan)邊(bian)長(chang)(chang)大(da)(da)于(yu)(yu)(yu)800mm,并且管(guan)(guan)(guan)(guan)段(duan)長(chang)(chang)度(du)大(da)(da)于(yu)(yu)(yu)1250mm或(huo)(huo)低壓風(feng)(feng)管(guan)(guan)(guan)(guan)單邊(bian)平(ping)面(mian)積(ji)大(da)(da)于(yu)(yu)(yu)1.2m2、中(zhong)、高(gao)壓風(feng)(feng)管(guan)(guan)(guan)(guan)大(da)(da)于(yu)(yu)(yu)1.0m2中(zhong),均應(ying)(ying)(ying)(ying)采用加(jia)固(gu)(gu)辦法。角鋼、加(jia)固(gu)(gu)筋(jin)的(de)加(jia)固(gu)(gu),其(qi)高(gao)度(du)應(ying)(ying)(ying)(ying)小于(yu)(yu)(yu)或(huo)(huo)等(deng)于(yu)(yu)(yu)風(feng)(feng)管(guan)(guan)(guan)(guan)的(de)寬度(du)。角鋼、加(jia)固(gu)(gu)筋(jin)與風(feng)(feng)管(guan)(guan)(guan)(guan)鉚(liu)接(jie)的(de)間(jian)隔應(ying)(ying)(ying)(ying)均勻,不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)大(da)(da)于(yu)(yu)(yu)220mm。.對于(yu)(yu)(yu)凈化(hua)空調系統(tong)(tong),不(bu)(bu)(bu)應(ying)(ying)(ying)(ying)在(zai)風(feng)(feng)管(guan)(guan)(guan)(guan)內設(she)加(jia)固(gu)(gu)框(kuang)及(ji)加(jia)固(gu)(gu)筋(jin)。
風(feng)(feng)管(guan)(guan)主要(yao)(yao)指(zhi)中央空調系統(tong)的(de)(de)通(tong)風(feng)(feng)管(guan)(guan)道,它(ta)常(chang)常(chang)被忽視,但卻是空調系統(tong)的(de)(de)重(zhong)要(yao)(yao)組成部分,目前常(chang)見的(de)(de)風(feng)(feng)管(guan)(guan)主要(yao)(yao)有四種:1)鍍(du)鋅薄(bo)鋼(gang)板風(feng)(feng)管(guan)(guan);2)無機(ji)玻(bo)璃鋼(gang)風(feng)(feng)管(guan)(guan);3)復合(he)玻(bo)纖(xian)板風(feng)(feng)管(guan)(guan);4)纖(xian)維(wei)織物風(feng)(feng)管(guan)(guan)。鍍(du)鋅薄(bo)鋼(gang)板風(feng)(feng)管(guan)(guan):早使用(yong)的(de)(de)風(feng)(feng)管(guan)(guan),采(cai)用(yong)鍍(du)鋅薄(bo)鋼(gang)板制(zhi)(zhi)作(zuo),適合(he)含濕量小的(de)(de)一般(ban)性氣體的(de)(de)輸送,有易(yi)生銹,無保溫(wen)和消聲(sheng)功能(neng),制(zhi)(zhi)作(zuo)安裝(zhuang)周(zhou)期(qi)長的(de)(de)特點。無機(ji)玻(bo)璃鋼(gang)風(feng)(feng)管(guan)(guan):較新的(de)(de)風(feng)(feng)管(guan)(guan)類型,采(cai)用(yong)玻(bo)璃纖(xian)維(wei)增強無機(ji)材料制(zhi)(zhi)作(zuo),遇(yu)火不燃(ran)、耐腐(fu)蝕、份(fen)量重(zhong),硬度大(da)但較脆(cui),受自重(zhong)影響易(yi)變形酥(su)裂,無保溫(wen)和消聲(sheng)性能(neng),制(zhi)(zhi)作(zuo)安裝(zhuang)周(zhou)期(qi)長。