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1.風管程度安裝,邊長尺寸小于等于400mm,間距不應大于4m;大于400mm,不應大于3m;對于薄鋼板法蘭的風管,其支、吊架間距不應大于3m。2.風管垂直安裝,間距不應大于4m,消防通風設備單根直管至少應有2個固定點。3.支、吊架不宜設置在風口、閥門、檢討門及自控機構處,離風口或插接管的距離不宜小于200mm。4.當程度懸吊的主、干風管長度超過20m時,推薦消防通風設備應(ying)(ying)(ying)設(she)(she)置防止擺動固(gu)定點,每(mei)個系統(tong)不(bu)應(ying)(ying)(ying)少于(yu)(yu)1個。5.防火閥(fa)直徑或(huo)(huo)(huo)長(chang)邊(bian)尺寸大于(yu)(yu)等于(yu)(yu)630mm時,宜設(she)(she)獨(du)立支、吊(diao)架。6.帶高(gao)效過濾器的(de)送風(feng)(feng)(feng)(feng)(feng)口,應(ying)(ying)(ying)采取可(ke)分離調(diao)節高(gao)度(du)的(de)吊(diao)桿。金(jin)屬風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)的(de)加(jia)(jia)固(gu):矩形風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)邊(bian)長(chang)大于(yu)(yu)630mm、保溫風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)邊(bian)長(chang)大于(yu)(yu)800mm,并且管(guan)(guan)段長(chang)度(du)大于(yu)(yu)1250mm或(huo)(huo)(huo)低壓風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)單邊(bian)平(ping)面積大于(yu)(yu)1.2m2、中(zhong)、高(gao)壓風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)大于(yu)(yu)1.0m2中(zhong),均應(ying)(ying)(ying)采用加(jia)(jia)固(gu)辦法。角(jiao)(jiao)鋼、加(jia)(jia)固(gu)筋的(de)加(jia)(jia)固(gu),其(qi)高(gao)度(du)應(ying)(ying)(ying)小于(yu)(yu)或(huo)(huo)(huo)等于(yu)(yu)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)的(de)寬(kuan)度(du)。角(jiao)(jiao)鋼、加(jia)(jia)固(gu)筋與(yu)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)鉚接的(de)間隔應(ying)(ying)(ying)均勻,不(bu)應(ying)(ying)(ying)大于(yu)(yu)220mm。.對于(yu)(yu)凈化空調(diao)系統(tong),不(bu)應(ying)(ying)(ying)在風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)內(nei)設(she)(she)加(jia)(jia)固(gu)框及加(jia)(jia)固(gu)筋。
消(xiao)聲(sheng)(sheng)(sheng)(sheng)器是(shi)(shi)利用聲(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)吸(xi)(xi)(xi)收(shou)(shou)、反(fan)射(she)(she)、干(gan)涉等原理,降低(di)通風與空調系統(tong)中(zhong)氣(qi)(qi)流噪聲(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)裝置。根據消(xiao)聲(sheng)(sheng)(sheng)(sheng)原理的(de)(de)(de)不同可以分為阻(zu)性、抗性、共振(zhen)型和(he)(he)復(fu)合型等。一、阻(zu)性消(xiao)聲(sheng)(sheng)(sheng)(sheng)器,阻(zu)性消(xiao)聲(sheng)(sheng)(sheng)(sheng)器利用吸(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)的(de)(de)(de)吸(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)作用而消(xiao)聲(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)。其構造是(shi)(shi)把(ba)吸(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)固定在氣(qi)(qi)流流動(dong)的(de)(de)(de)管(guan)道內壁,或按一定方式排列在管(guan)道或殼體內構成阻(zu)性消(xiao)聲(sheng)(sheng)(sheng)(sheng)器,吸(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)能(neng)夠把(ba)入射(she)(she)在其上的(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)能(neng)部分地吸(xi)(xi)(xi)收(shou)(shou)掉。聲(sheng)(sheng)(sheng)(sheng)能(neng)之所以能(neng)被吸(xi)(xi)(xi)收(shou)(shou),是(shi)(shi)由(you)于(yu)吸(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)材(cai)料(liao)的(de)(de)(de)多(duo)孔性和(he)(he)松散性。當(dang)聲(sheng)(sheng)(sheng)(sheng)波進入孔隙(xi),引(yin)起孔隙(xi)中(zhong)的(de)(de)(de)空氣(qi)(qi)和(he)(he)材(cai)料(liao)產(chan)生微小(xiao)的(de)(de)(de)振(zhen)動(dong),由(you)于(yu)摩擦和(he)(he)粘滯阻(zu)力。使相當(dang)一部分聲(sheng)(sheng)(sheng)(sheng)能(neng)化為熱能(neng)而被吸(xi)(xi)(xi)收(shou)(shou)掉。
排煙(yan)防(fang)火閥(fa)在火災發生(sheng)時起到重要(yao)的保護作用,因此(ci)其安全及耐高溫(wen)性能(neng)要(yao)好(hao)。那么大(da)家對其還有(you)哪些了解呢(ni)?下面(mian)就跟隨簡要(yao)了解下其主(zhu)要(yao)功(gong)能(neng)及相關優(you)勢(shi)吧。這款排煙(yan)防(fang)火閥(fa)輸(shu)入DC24V電(dian)(dian)信(xin)號,電(dian)(dian)磁鐵動(dong)作、閥(fa)門敏捷敞開;手動(dong)封閉,手動(dong)復(fu)位敞開;可(ke)輸(shu)出(chu)閥(fa)門開封閉信(xin)號及聯鎖操控信(xin)號;0°~90°范圍(wei)內手動(dong)調(diao)理葉片敞開度;(調(diao)理型)。其主(zhu)要(yao)優(you)勢(shi)有(you):1.漏風量低、氣密(mi)功(gong)能(neng)好(hao);2.電(dian)(dian)動(dong)敞開耗(hao)費電(dian)(dian)流小;3.防(fang)腐功(gong)能(neng)強,運(yun)用壽命長;4.執行(xing)機構驅(qu)動(dong)靈敏,反應、聯鎖信(xin)號精確(que)。
通風(feng)、空調設(she)(she)備防(fang)(fang)(fang)(fang)火(huo)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)措施1、空氣(qi)(qi)中(zhong)含有(you)(you)(you)容易(yi)起火(huo)或爆(bao)(bao)(bao)炸物質的(de)(de)(de)(de)(de)房(fang)間,其送(song)、排(pai)(pai)風(feng)系統應采(cai)(cai)用(yong)(yong)(yong)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)型的(de)(de)(de)(de)(de)通風(feng)設(she)(she)備和(he)不(bu)(bu)會產生(sheng)(sheng)火(huo)花的(de)(de)(de)(de)(de)材料(liao)(如可(ke)(ke)采(cai)(cai)用(yong)(yong)(yong)有(you)(you)(you)色金(jin)屬制(zhi)造的(de)(de)(de)(de)(de)風(feng)機(ji)葉片和(he)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)電(dian)動機(ji))。當送(song)風(feng)機(ji)布(bu)置(zhi)(zhi)(zhi)在(zai)單獨分(fen)隔(ge)的(de)(de)(de)(de)(de)通風(feng)機(ji)房(fang)內,且送(song)風(feng)干管上(shang)設(she)(she)置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)止(zhi)回(hui)流設(she)(she)施時,可(ke)(ke)采(cai)(cai)用(yong)(yong)(yong)普通型通風(feng)設(she)(she)備。2、含有(you)(you)(you)易(yi)燃、易(yi)爆(bao)(bao)(bao)粉(fen)塵(碎(sui)屑)的(de)(de)(de)(de)(de)空氣(qi)(qi),在(zai)進(jin)入排(pai)(pai)風(feng)機(ji)前應采(cai)(cai)用(yong)(yong)(yong)不(bu)(bu)產生(sheng)(sheng)火(huo)花的(de)(de)(de)(de)(de)除(chu)塵器(qi)進(jin)行處(chu)理,以(yi)防(fang)(fang)(fang)(fang)止(zhi)除(chu)塵器(qi)工(gong)作過程中(zhong)產生(sheng)(sheng)火(huo)花引(yin)起粉(fen)塵、碎(sui)屑燃燒(shao)或爆(bao)(bao)(bao)炸。對于遇濕(shi)可(ke)(ke)能爆(bao)(bao)(bao)炸的(de)(de)(de)(de)(de)粉(fen)塵(如電(dian)石、鋅粉(fen)、鋁鎂合金(jin)粉(fen)等),嚴禁采(cai)(cai)用(yong)(yong)(yong)濕(shi)式除(chu)塵器(qi)。3、排(pai)(pai)除(chu)、輸(shu)送(song)有(you)(you)(you)燃燒(shao)、爆(bao)(bao)(bao)炸危(wei)險的(de)(de)(de)(de)(de)氣(qi)(qi)體、蒸氣(qi)(qi)和(he)粉(fen)塵的(de)(de)(de)(de)(de)排(pai)(pai)風(feng)系統,應采(cai)(cai)用(yong)(yong)(yong)不(bu)(bu)燃材料(liao)并設(she)(she)有(you)(you)(you)導除(chu)靜(jing)電(dian)的(de)(de)(de)(de)(de)接地裝置(zhi)(zhi)(zhi)。其排(pai)(pai)風(feng)設(she)(she)備不(bu)(bu)應布(bu)置(zhi)(zhi)(zhi)在(zai)地下、半地下建(jian)筑(zhu)(室(shi))內,以(yi)防(fang)(fang)(fang)(fang)止(zhi)有(you)(you)(you)爆(bao)(bao)(bao)炸危(wei)險的(de)(de)(de)(de)(de)蒸氣(qi)(qi)和(he)粉(fen)塵等物質的(de)(de)(de)(de)(de)積聚。4、排(pai)(pai)除(chu)、輸(shu)送(song)溫度(du)超過80℃的(de)(de)(de)(de)(de)空氣(qi)(qi)或其他氣(qi)(qi)體以(yi)及容易(yi)起火(huo)的(de)(de)(de)(de)(de)碎(sui)屑的(de)(de)(de)(de)(de)管道(dao),與(yu)(yu)可(ke)(ke)燃或難燃物體之間應保持不(bu)(bu)小于150mm的(de)(de)(de)(de)(de)間隙,或采(cai)(cai)用(yong)(yong)(yong)厚度(du)不(bu)(bu)小于50mm的(de)(de)(de)(de)(de)不(bu)(bu)燃材料(liao)隔(ge)熱(re),以(yi)防(fang)(fang)(fang)(fang)止(zhi)填塞物與(yu)(yu)構件因受這些高溫管道(dao)的(de)(de)(de)(de)(de)影響而導致火(huo)災。當管道(dao)互(hu)為上(shang)下布(bu)置(zhi)(zhi)(zhi)時,表(biao)面(mian)溫度(du)較(jiao)高者應布(bu)置(zhi)(zhi)(zhi)在(zai)上(shang)面(mian)。