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在空(kong)調(diao)送(song)風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)中(zhong)(zhong)(zhong)(zhong),空(kong)調(diao)送(song)風(feng)(feng)(feng)機(ji)送(song)出的(de)風(feng)(feng)(feng)必(bi)須通(tong)過(guo)主干(gan)管(guan)(guan)分(fen)配到(dao)(dao)支管(guan)(guan)中(zhong)(zhong)(zhong)(zhong);在排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)系(xi)(xi)(xi)統(tong)中(zhong)(zhong)(zhong)(zhong),煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)氣(qi)由(you)支管(guan)(guan)到(dao)(dao)主干(gan)管(guan)(guan)后(hou),進入(ru)排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)風(feng)(feng)(feng)機(ji)排(pai)(pai)(pai)(pai)出。當(dang)建(jian)筑物(wu)內發生(sheng)(sheng)火(huo)(huo)(huo)災時,在通(tong)風(feng)(feng)(feng)、空(kong)調(diao)系(xi)(xi)(xi)統(tong)中(zhong)(zhong)(zhong)(zhong),為(wei)了防(fang)止(zhi)火(huo)(huo)(huo)勢(shi)(shi)通(tong)過(guo)送(song)風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)蔓延(yan),當(dang)送(song)風(feng)(feng)(feng)系(xi)(xi)(xi)統(tong)中(zhong)(zhong)(zhong)(zhong)氣(qi)體溫度達到(dao)(dao)70℃時,防(fang)火(huo)(huo)(huo)閥(fa)機(ji)構上(shang)熔(rong)斷(duan)器動(dong)(dong)作(zuo),閥(fa)門(men)亦迅速關閥(fa),切斷(duan)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)氣(qi)與火(huo)(huo)(huo)勢(shi)(shi)沿風(feng)(feng)(feng)管(guan)(guan)蔓延(yan)的(de)通(tong)路(lu)。同樣,在排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)系(xi)(xi)(xi)統(tong)中(zhong)(zhong)(zhong)(zhong),發生(sheng)(sheng)火(huo)(huo)(huo)災時,排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)閥(fa)開啟(qi),進行排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan),為(wei)了截斷(duan)高(gao)溫煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)氣(qi)在排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)管(guan)(guan)路(lu)中(zhong)(zhong)(zhong)(zhong)流動(dong)(dong),防(fang)止(zhi)火(huo)(huo)(huo)勢(shi)(shi)蔓延(yan)到(dao)(dao)另一防(fang)火(huo)(huo)(huo)分(fen)區,當(dang)排(pai)(pai)(pai)(pai)出的(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)氣(qi)溫度達到(dao)(dao)280℃時,排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)防(fang)火(huo)(huo)(huo)閥(fa)、排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)口上(shang)熔(rong)斷(duan)器動(dong)(dong)作(zuo),閥(fa)門(men)必(bi)須自動(dong)(dong)關閉,阻止(zhi)排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)。由(you)此可見,防(fang)火(huo)(huo)(huo)閥(fa)、排(pai)(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)閥(fa)做到(dao)(dao)了該通(tong)則(ze)通(tong),該斷(duan)則(ze)斷(duan)的(de)隔(ge)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)阻火(huo)(huo)(huo)作(zuo)用。
1.通風、空氣調節系統的風管在下列部位應設置公稱動作溫度為70℃的防火閥。①穿越防火分區處。②穿越通風空調機房的房間隔墻和樓板處。③穿越重要或火災危險性大的場所的房間隔墻和樓板處。④穿越防火分隔處的變形縫兩側。⑤豎向風管與每層水平風管交接處的水平管段上,當建筑內每個防火分區的通風、空氣調節系統值得信賴的風管均獨立設置時,水平風管與豎向總管的交接處可不設置防火閥。2.公共建筑的浴室、衛生間和廚房的豎向排風管,風管廠家應采取防(fang)止回流(liu)措施并宜在支管上設(she)(she)置(zhi)(zhi)公稱動作溫(wen)度(du)為70℃的(de)(de)防(fang)火(huo)(huo)閥(fa)。公共建筑內(nei)廚房的(de)(de)排(pai)油煙(yan)管道宜按防(fang)火(huo)(huo)分區設(she)(she)置(zhi)(zhi),且在與豎(shu)向排(pai)風(feng)管連接的(de)(de)支管處應設(she)(she)置(zhi)(zhi)公稱動作溫(wen)度(du)為150℃的(de)(de)防(fang)火(huo)(huo)閥(fa)。 3.排(pai)煙(yan)防(fang)火(huo)(huo)閥(fa)(280℃)的(de)(de)設(she)(she)置(zhi)(zhi)場所:①排(pai)煙(yan)管進入排(pai)風(feng)機(ji)房處;②穿越防(fang)火(huo)(huo)分區的(de)(de)排(pai)煙(yan)管道上;③排(pai)煙(yan)系統的(de)(de)支管上;
通(tong)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道(dao)安裝程序:(1)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)組(zu)(zu)裝:當風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)較(jiao)(jiao)短時(shi),可一次在(zai)地(di)面組(zu)(zu)裝而(er)成,當風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)較(jiao)(jiao)長時(shi),可視安裝場(chang)地(di)的(de)情況,在(zai)地(di)面分段組(zu)(zu)裝。組(zu)(zu)裝時(shi)應(ying)盡(jin)量調(diao)整(zheng)風(feng)(feng)(feng)(feng)(feng)道(dao)的(de)中心度(du)(du)(du)和(he)水(shui)平(ping)度(du)(du)(du),避免(mian)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)扭曲或上下起波,左(zuo)右擺(bai)龍(long),每(mei)段風(feng)(feng)(feng)(feng)(feng)道(dao)不(bu)宜(yi)超過(guo)10m.組(zu)(zu)裝時(shi),墊片應(ying)墊平(ping),法(fa)蘭螺栓應(ying)均(jun)勻擰緊,螺母帽(mao)均(jun)朝向(xiang)(xiang)同(tong)一方向(xiang)(xiang)。(2)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)就(jiu)(jiu)(jiu)(jiu)位(wei):風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)就(jiu)(jiu)(jiu)(jiu)位(wei)前應(ying)檢查全部支架(jia)的(de)水(shui)乎度(du)(du)(du)和(he)標高、檢查支架(jia)的(de)牢(lao)固程度(du)(du)(du),風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)就(jiu)(jiu)(jiu)(jiu)位(wei)可采(cai)用(yong)(yong)直接和(he)吊(diao)(diao)(diao)具兩種方法(fa)。對風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)斷面較(jiao)(jiao)小,又(you)位(wei)置較(jiao)(jiao)低(di)的(de)可采(cai)用(yong)(yong)人工就(jiu)(jiu)(jiu)(jiu)位(wei)方法(fa),只需搭設簡易腳(jiao)手架(jia)即可。當風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)斷面較(jiao)(jiao)大(da)(da)且管(guan)(guan)(guan)(guan)段較(jiao)(jiao)長時(shi),可采(cai)用(yong)(yong)滑輪、倒鏈、大(da)(da)繩等方法(fa)吊(diao)(diao)(diao)裝。世紀星介紹為了便于風(feng)(feng)(feng)(feng)(feng)道(dao)就(jiu)(jiu)(jiu)(jiu)位(wei),一般多采(cai)用(yong)(yong)將(jiang)風(feng)(feng)(feng)(feng)(feng)道(dao)吊(diao)(diao)(diao)在(zai)腳(jiao)手架(jia)上,然后再將(jiang)其抬放在(zai)風(feng)(feng)(feng)(feng)(feng)道(dao)支架(jia)上的(de)方法(fa)。腳(jiao)手架(jia)應(ying)沿其風(feng)(feng)(feng)(feng)(feng)道(dao)長度(du)(du)(du)方向(xiang)(xiang)搭設,高度(du)(du)(du)和(he)位(wei)置應(ying)適(shi)合施工操(cao)作,吊(diao)(diao)(diao)裝順序應(ying)先干管(guan)(guan)(guan)(guan)后支、立管(guan)(guan)(guan)(guan),吊(diao)(diao)(diao)起時(shi),吊(diao)(diao)(diao)點應(ying)牢(lao)固,兩吊(diao)(diao)(diao)點應(ying)均(jun)勻受力。垂直風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)可采(cai)用(yong)(yong)人工和(he)大(da)(da)繩輔(fu)助就(jiu)(jiu)(jiu)(jiu)位(wei)。調(diao)整(zheng)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)保證垂直度(du)(du)(du)要求。(3)風(feng)(feng)(feng)(feng)(feng)道(dao)調(diao)直:就(jiu)(jiu)(jiu)(jiu)位(wei)在(zai)支架(jia)上的(de)風(feng)(feng)(feng)(feng)(feng)道(dao),應(ying)撥正位(wei)置,調(diao)整(zheng)風(feng)(feng)(feng)(feng)(feng)道(dao)橫平(ping)豎直,然后再按(an)圖(tu)集要求固定。
消聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)是利用(yong)聲(sheng)(sheng)(sheng)(sheng)的(de)吸(xi)收(shou)(shou)、反射、干涉等原理,降(jiang)低通(tong)風(feng)與(yu)空(kong)調系統中氣(qi)(qi)流(liu)噪聲(sheng)(sheng)(sheng)(sheng)的(de)裝置。根據消聲(sheng)(sheng)(sheng)(sheng)原理的(de)不同可以分(fen)為(wei)(wei)阻(zu)性(xing)(xing)(xing)、抗性(xing)(xing)(xing)、共振型(xing)和復(fu)合(he)型(xing)等。一、阻(zu)性(xing)(xing)(xing)消聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi),阻(zu)性(xing)(xing)(xing)消聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi)利用(yong)吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料的(de)吸(xi)聲(sheng)(sheng)(sheng)(sheng)作用(yong)而(er)消聲(sheng)(sheng)(sheng)(sheng)的(de)。其(qi)構造是把吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料固(gu)定在氣(qi)(qi)流(liu)流(liu)動的(de)管道內壁,或(huo)按(an)一定方式排列在管道或(huo)殼(ke)體內構成(cheng)阻(zu)性(xing)(xing)(xing)消聲(sheng)(sheng)(sheng)(sheng)器(qi)(qi),吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料能(neng)(neng)夠把入射在其(qi)上(shang)的(de)聲(sheng)(sheng)(sheng)(sheng)能(neng)(neng)部分(fen)地吸(xi)收(shou)(shou)掉。聲(sheng)(sheng)(sheng)(sheng)能(neng)(neng)之所(suo)以能(neng)(neng)被吸(xi)收(shou)(shou),是由(you)于(yu)吸(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料的(de)多(duo)孔(kong)性(xing)(xing)(xing)和松散性(xing)(xing)(xing)。當(dang)聲(sheng)(sheng)(sheng)(sheng)波進入孔(kong)隙(xi),引起孔(kong)隙(xi)中的(de)空(kong)氣(qi)(qi)和材(cai)料產生微小的(de)振動,由(you)于(yu)摩(mo)擦和粘滯阻(zu)力。使相當(dang)一部分(fen)聲(sheng)(sheng)(sheng)(sheng)能(neng)(neng)化為(wei)(wei)熱能(neng)(neng)而(er)被吸(xi)收(shou)(shou)掉。
消防(fang)(fang)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)(feng)(feng)機(ji)風(feng)(feng)(feng)量(liang)(liang)與送(song)風(feng)(feng)(feng)機(ji)風(feng)(feng)(feng)量(liang)(liang)計算(suan)(suan)方(fang)(fang)法是根據(ju)建筑(zhu)面(mian)積(ji)(ji)(ji)來確定的(de)(de),每個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)都(dou)需要(yao)獨立計算(suan)(suan)其(qi)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang),當排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)風(feng)(feng)(feng)機(ji)擔負一(yi)個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)的(de)(de)時候可按(an)(an)(an)平(ping)方(fang)(fang)米面(mian)積(ji)(ji)(ji)不小(xiao)于(yu)(yu)60m3/h計算(suan)(suan),擔負多個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)則(ze)按(an)(an)(an)平(ping)方(fang)(fang)米面(mian)積(ji)(ji)(ji)不小(xiao)于(yu)(yu)120m3/h計算(suan)(suan)。送(song)風(feng)(feng)(feng)量(liang)(liang)按(an)(an)(an)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)的(de)(de)50%計算(suan)(suan)。每個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)不應大于(yu)(yu)500平(ping)方(fang)(fang)。常見的(de)(de)消防(fang)(fang)防(fang)(fang)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)系統(tong)中,排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)一(yi)般(ban)根據(ju)大防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)面(mian)積(ji)(ji)(ji)500*120等于(yu)(yu)60000立方(fang)(fang)每小(xiao)時計算(suan)(suan),在設(she)(she)計排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)的(de)(de)時候要(yao)注意(yi)漏(lou)風(feng)(feng)(feng)量(liang)(liang),一(yi)般(ban)可按(an)(an)(an)小(xiao)漏(lou)風(feng)(feng)(feng)量(liang)(liang)10%計算(suan)(suan)。例如(ru):當建筑(zhu)面(mian)積(ji)(ji)(ji)為(wei)(wei)1000平(ping)方(fang)(fang)時,需要(yao)設(she)(she)置(zhi)兩個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu),每個(ge)防(fang)(fang)煙(yan)(yan)(yan)(yan)分(fen)區(qu)的(de)(de)大面(mian)積(ji)(ji)(ji)為(wei)(wei)500平(ping)方(fang)(fang),排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)是500*1203/h=600003/h,再加上小(xiao)漏(lou)風(feng)(feng)(feng)量(liang)(liang)10%為(wei)(wei)60003/h,總排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)應為(wei)(wei)660003/h,其(qi)中送(song)風(feng)(feng)(feng)量(liang)(liang)為(wei)(wei)排(pai)(pai)(pai)煙(yan)(yan)(yan)(yan)量(liang)(liang)的(de)(de)50%應為(wei)(wei)330003/h。
1.冷(leng)(leng)(熱(re)(re))水機(ji)(ji)(ji)(ji)組(zu)的(de)(de)(de)基本(ben)工(gong)作過程(cheng)是:室(shi)外的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)機(ji)(ji)(ji)(ji)組(zu)對冷(leng)(leng)(熱(re)(re))媒(mei)水進(jin)行(xing)制(zhi)(zhi)冷(leng)(leng)降溫(wen)(或加熱(re)(re)升溫(wen)),然(ran)后由(you)水泵將降溫(wen)后的(de)(de)(de)冷(leng)(leng)媒(mei)(熱(re)(re))水輸(shu)送(song)(song)到安裝在室(shi)內的(de)(de)(de)風(feng)機(ji)(ji)(ji)(ji)盤管(guan)機(ji)(ji)(ji)(ji)組(zu)中,由(you)風(feng)機(ji)(ji)(ji)(ji)盤管(guan)機(ji)(ji)(ji)(ji)組(zu)采(cai)取就地回(hui)風(feng)的(de)(de)(de)方式與室(shi)內空氣(qi)(qi)(qi)進(jin)行(xing)熱(re)(re)交換(huan)實現對室(shi)內空氣(qi)(qi)(qi)處理的(de)(de)(de)目的(de)(de)(de)。2.風(feng)管(guan)(道)式機(ji)(ji)(ji)(ji)組(zu)的(de)(de)(de)基本(ben)工(gong)作過程(cheng)是:供冷(leng)(leng)時,室(shi)外的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)機(ji)(ji)(ji)(ji)組(zu)吸(xi)收來(lai)自室(shi)內機(ji)(ji)(ji)(ji)組(zu)的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)劑(ji)蒸氣(qi)(qi)(qi)經(jing)壓(ya)縮、冷(leng)(leng)凝后向(xiang)各室(shi)內機(ji)(ji)(ji)(ji)組(zu)輸(shu)送(song)(song)液體制(zhi)(zhi)冷(leng)(leng)劑(ji)。供熱(re)(re)時,室(shi)外的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)機(ji)(ji)(ji)(ji)組(zu)吸(xi)收來(lai)自冷(leng)(leng)凝器的(de)(de)(de)制(zhi)(zhi)冷(leng)(leng)劑(ji)蒸氣(qi)(qi)(qi)經(jing)壓(ya)縮后向(xiang)各室(shi)內機(ji)(ji)(ji)(ji)組(zu)輸(shu)送(song)(song)汽體制(zhi)(zhi)冷(leng)(leng)劑(ji),室(shi)內機(ji)(ji)(ji)(ji)組(zu)通過布置在天(tian)花板(ban)上的(de)(de)(de)回(hui)風(feng)口將空氣(qi)(qi)(qi)吸(xi)入,進(jin)行(xing)熱(re)(re)交換(huan)后送(song)(song)入安裝在室(shi)內各房(fang)間(jian)天(tian)花板(ban)中的(de)(de)(de)風(feng)管(guan)(道)內,并通過出風(feng)口上的(de)(de)(de)散流器向(xiang)室(shi)內各房(fang)間(jian)輸(shu)送(song)(song)空氣(qi)(qi)(qi)。在風(feng)管(guan)(道)上設計有新風(feng)門(men)和排風(feng)門(men),可以按一定比例置換(huan)空氣(qi)(qi)(qi),以保證室(shi)內空氣(qi)(qi)(qi)的(de)(de)(de)質量(liang)。