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一、通風與空調系統的組成與類別(一)通風系統的組成,包括:進氣處理設備,如空氣過濾設備、熱濕處理設備和空氣凈化設備等;送風機或排風機;風道系統,如風管、送風口、排風口、排氣罩等;排氣處理設備,如除塵器、有害氣體凈化設備、風帽等。2.通風系統的類別有:(二)空調系統的組成——空氣處理設備、熱源和冷源、空調風系統、水系統、控制、調節裝置(1)空氣處理設備:空氣加熱或冷卻設備、空氣加濕或去濕設備和空氣凈化設備等;值得信賴的不銹鋼通風管其作用是將送風空氣處理到一定的狀態。(2)熱源和冷源:常用的熱源有提供熱水或蒸汽的鍋爐、電加熱器等。(3)空調風系統:由風機和風管系統組成。(4)水系統:包括將冷凍水(或熱水)從制冷系統(或熱源)輸送到空氣處理設備的水系統和制冷設備的冷卻水系統,由水泵和水管系統組成。(5)控制、調節裝置:不銹鋼通風管裝(zhuang)置的(de)(de)(de)作用是調節空(kong)調系統的(de)(de)(de)冷量(liang)、熱量(liang)、風量(liang)等,使空(kong)調系統的(de)(de)(de)工(gong)作適應空(kong)調工(gong)況的(de)(de)(de)變(bian)化(hua),從而將室內(nei)空(kong)氣狀況控(kong)制(zhi)在要求(qiu)的(de)(de)(de)范圍內(nei)。
消(xiao)(xiao)聲(sheng)(sheng)器是利用聲(sheng)(sheng)的(de)(de)(de)吸(xi)收、反射(she)、干涉等原理,降低通風(feng)與(yu)空調系統中(zhong)氣流(liu)噪聲(sheng)(sheng)的(de)(de)(de)裝置。根據消(xiao)(xiao)聲(sheng)(sheng)原理的(de)(de)(de)不(bu)同可(ke)以分為阻性、抗性、共振型和(he)復(fu)合型等。一(yi)、阻性消(xiao)(xiao)聲(sheng)(sheng)器,阻性消(xiao)(xiao)聲(sheng)(sheng)器利用吸(xi)聲(sheng)(sheng)材(cai)料(liao)(liao)的(de)(de)(de)吸(xi)聲(sheng)(sheng)作用而消(xiao)(xiao)聲(sheng)(sheng)的(de)(de)(de)。其構造是把吸(xi)聲(sheng)(sheng)材(cai)料(liao)(liao)固定在氣流(liu)流(liu)動(dong)的(de)(de)(de)管道(dao)內壁,或(huo)按一(yi)定方式排列在管道(dao)或(huo)殼體內構成阻性消(xiao)(xiao)聲(sheng)(sheng)器,吸(xi)聲(sheng)(sheng)材(cai)料(liao)(liao)能(neng)夠把入射(she)在其上(shang)的(de)(de)(de)聲(sheng)(sheng)能(neng)部分地吸(xi)收掉(diao)。聲(sheng)(sheng)能(neng)之所(suo)以能(neng)被(bei)(bei)吸(xi)收,是由(you)于吸(xi)聲(sheng)(sheng)材(cai)料(liao)(liao)的(de)(de)(de)多孔(kong)性和(he)松散性。當聲(sheng)(sheng)波(bo)進入孔(kong)隙,引起孔(kong)隙中(zhong)的(de)(de)(de)空氣和(he)材(cai)料(liao)(liao)產(chan)生微小的(de)(de)(de)振動(dong),由(you)于摩(mo)擦和(he)粘滯阻力。使相當一(yi)部分聲(sheng)(sheng)能(neng)化為熱能(neng)而被(bei)(bei)吸(xi)收掉(diao)。
(1)防(fang)(fang)火(huo)閥使用及安(an)裝(zhuang)(zhuang)(a) 安(an)裝(zhuang)(zhuang)前必須(xu)檢(jian)查(cha)防(fang)(fang)火(huo)閥外(wai)觀(guan)質量、控(kong)制性能和(he)閥門動作(zuo),確(que)認(ren)正常(chang)后配鉆(zhan)法蘭連接(jie)孔(kong)。(b) 安(an)裝(zhuang)(zhuang)時(shi)防(fang)(fang)火(huo)閥的方(fang)向(xiang)位置應(ying)(ying)正確(que),熔斷(duan)器(易熔片)應(ying)(ying)先于葉片軸接(jie)觸熱氣流(liu)(即位于葉片的迎風側)。自重(zhong)式(shi)防(fang)(fang)火(huo)閥要注(zhu)(zhu)意葉片的上下(xia)方(fang)向(xiang)氣流(liu)方(fang)向(xiang)標志,不得倒置。(c) 防(fang)(fang)火(huo)閥應(ying)(ying)牢靠(kao)地固定在設定的位置上,確(que)保當發生火(huo)災(zai)時(shi)不致因管(guan)道變(bian)形(xing)下(xia)塌而影響工(gong)(gong)作(zuo)性能,必要時(shi)應(ying)(ying)設吊架。(d) 具有(you)(you)風量調節功能的防(fang)(fang)火(huo)閥,應(ying)(ying)在調試過(guo)程(cheng)中(zhong)調定閥門開度(du)。(e) 當設計(ji)防(fang)(fang)火(huo)閥為吊頂安(an)裝(zhuang)(zhuang)或(huo)靠(kao)近墻體安(an)裝(zhuang)(zhuang)時(shi),要保證(zheng)防(fang)(fang)火(huo)閥周圍貿有(you)(you)足夠空間。(f) 安(an)裝(zhuang)(zhuang)防(fang)(fang)火(huo)閥后的施(shi)工(gong)(gong)過(guo)程(cheng)中(zhong),要注(zhu)(zhu)意不得使閥體、操作(zuo)裝(zhuang)(zhuang)置等(deng)受到損傷、變(bian)形(xing),以免影響其工(gong)(gong)作(zuo)性能(g) 安(an)裝(zhuang)(zhuang)后應(ying)(ying)對防(fang)(fang)火(huo)閥清掃檢(jian)查(cha),閥體內不得有(you)(you)雜物,并進行操作(zuo)試驗,確(que)保閥體正常(chang)工(gong)(gong)作(zuo)。
1、消聲(sheng)性(xing)(xing)(xing)(xing)(xing)能:鍍鋅薄(bo)鋼(gang)板(ban)風(feng)(feng)管(guan)(guan):無(wu)(wu)消聲(sheng)性(xing)(xing)(xing)(xing)(xing)能,自身(shen)(shen)震動會產生聲(sheng)音,必(bi)須(xu)加(jia)(jia)裝消聲(sheng)器(qi)。無(wu)(wu)機玻(bo)璃鋼(gang)風(feng)(feng)管(guan)(guan):無(wu)(wu)消聲(sheng)性(xing)(xing)(xing)(xing)(xing)能,隔(ge)聲(sheng)性(xing)(xing)(xing)(xing)(xing)能優于(yu)鍍鋅薄(bo)鋼(gang)板(ban)風(feng)(feng)管(guan)(guan),必(bi)須(xu)加(jia)(jia)裝消聲(sheng)器(qi)。復合(he)(he)玻(bo)纖(xian)板(ban)風(feng)(feng)管(guan)(guan):其管(guan)(guan)壁是一種(zhong)多(duo)孔性(xing)(xing)(xing)(xing)(xing)吸(xi)聲(sheng)材(cai)料(liao),可(ke)(ke)省(sheng)去專(zhuan)用消聲(sheng)器(qi)。纖(xian)維(wei)織(zhi)物風(feng)(feng)管(guan)(guan):其管(guan)(guan)壁為柔性(xing)(xing)(xing)(xing)(xing)纖(xian)維(wei)織(zhi)物,本身(shen)(shen)就是聲(sheng)音的不(bu)(bu)良導(dao)(dao)體(ti)和吸(xi)收體(ti),自身(shen)(shen)不(bu)(bu)會產生聲(sheng)音,還可(ke)(ke)以一定(ding)程度(du)上吸(xi)收設備噪聲(sheng),隨著(zhu)管(guan)(guan)道的延(yan)長,效果更(geng)為明顯,可(ke)(ke)省(sheng)去專(zhuan)用消聲(sheng)器(qi)。2、保(bao)(bao)溫性(xing)(xing)(xing)(xing)(xing)能:鍍鋅薄(bo)鋼(gang)板(ban)風(feng)(feng)管(guan)(guan):導(dao)(dao)熱(re)系數(shu)很大(da)(為60.4 W/m?K),無(wu)(wu)保(bao)(bao)溫性(xing)(xing)(xing)(xing)(xing)能,必(bi)須(xu)另外(wai)加(jia)(jia)包(bao)保(bao)(bao)溫層(ceng)及(ji)保(bao)(bao)護層(ceng)。無(wu)(wu)機玻(bo)璃鋼(gang)風(feng)(feng)管(guan)(guan):導(dao)(dao)熱(re)系數(shu)大(da)(為0.5W/m?K),無(wu)(wu)保(bao)(bao)溫性(xing)(xing)(xing)(xing)(xing)能。復合(he)(he)玻(bo)纖(xian)板(ban)風(feng)(feng)管(guan)(guan):導(dao)(dao)熱(re)系數(shu)小(平均溫度(du)24℃時小于(yu)1W/m?K),有一定(ding)保(bao)(bao)溫性(xing)(xing)(xing)(xing)(xing)能,不(bu)(bu)加(jia)(jia)裝保(bao)(bao)溫。
消(xiao)防(fang)(fang)排煙(yan)風(feng)(feng)機(ji)廠家(jia)產(chan)品(pin)由多個配件構成,比如說葉(xie)(xie)輪(lun)、機(ji)殼(ke)、軸(zhou)承、主軸(zhou)等(deng)等(deng)構成,而(er)不同(tong)的(de)(de)(de)(de)配件也起著不同(tong)的(de)(de)(de)(de)作用。首先對于(yu)葉(xie)(xie)輪(lun)而(er)言(yan),一般采用優質鍍鋅板制(zhi)作而(er)成的(de)(de)(de)(de)葉(xie)(xie)片,通(tong)(tong)(tong)過傾斜設(she)計,與拉(la)伸成型(xing)的(de)(de)(de)(de)前盤一起形成了更(geng)合理(li)的(de)(de)(de)(de)流道,從而(er)保證(zheng)了葉(xie)(xie)輪(lun)的(de)(de)(de)(de)高效(xiao)率。而(er)軸(zhou)承是帶鑄(zhu)造座的(de)(de)(de)(de)外(wai)球面軸(zhou)承,可以通(tong)(tong)(tong)過外(wai)球面配合調整同(tong)軸(zhou)度的(de)(de)(de)(de)誤(wu)差(cha)。主軸(zhou)一般采用45#鋼(gang)經調制(zhi)處(chu)理(li)后精(jing)車而(er)成,保證(zheng)足(zu)(zu)夠(gou)的(de)(de)(de)(de)光潔度和尺寸精(jing)。另外(wai)兩層板內(nei)部填充消(xiao)聲材料,能更(geng)有效(xiao)隔熱降噪(zao)。消(xiao)防(fang)(fang)排煙(yan)風(feng)(feng)機(ji)不能距離隧道的(de)(de)(de)(de)邊(bian)壁太近,避(bi)免影響通(tong)(tong)(tong)風(feng)(feng)效(xiao)果。通(tong)(tong)(tong)風(feng)(feng)系統從安全(quan)隧道向(xiang)通(tong)(tong)(tong)過橫(heng)通(tong)(tong)(tong)道向(xiang)事故(gu)隧道方(fang)向(xiang)送(song)風(feng)(feng),抑(yi)制(zhi)煙(yan)氣進入(ru)(ru)橫(heng)通(tong)(tong)(tong)道及未發生事故(gu)的(de)(de)(de)(de)隧道,滿(man)足(zu)(zu)疏散人(ren)員迎著新風(feng)(feng)進入(ru)(ru)橫(heng)通(tong)(tong)(tong)道和安全(quan)隧道內(nei),同(tong)時(shi)保證(zheng)等(deng)待區域所需要的(de)(de)(de)(de)新鮮空(kong)氣。充分(fen)利(li)用定(ding)點(dian)救援站處(chu)的(de)(de)(de)(de)斜井(jing)和隧道兩端的(de)(de)(de)(de)消(xiao)防(fang)(fang)排煙(yan)風(feng)(feng)機(ji)作為(wei)送(song)入(ru)(ru)新風(feng)(feng)和排煙(yan)的(de)(de)(de)(de)通(tong)(tong)(tong)道,通(tong)(tong)(tong)風(feng)(feng)必須(xu)維(wei)持(chi)橫(heng)通(tong)(tong)(tong)道口(kou)處(chu)于(yu)正壓(ya)狀態,防(fang)(fang)止(zhi)煙(yan)氣流向(xiang)通(tong)(tong)(tong)道內(nei)。
排(pai)煙(yan)防(fang)火(huo)閥在火(huo)災發(fa)生(sheng)時起到重(zhong)要(yao)的保護作用,因此(ci)其安全及(ji)耐高溫性能(neng)要(yao)好。那么大家(jia)對其還有哪些了解呢?下面就跟隨簡要(yao)了解下其主(zhu)要(yao)功能(neng)及(ji)相關優勢(shi)吧。這款排(pai)煙(yan)防(fang)火(huo)閥輸(shu)入DC24V電(dian)信(xin)(xin)(xin)號(hao),電(dian)磁鐵(tie)動(dong)(dong)(dong)作、閥門敏(min)捷敞開;手動(dong)(dong)(dong)封閉(bi),手動(dong)(dong)(dong)復位敞開;可輸(shu)出閥門開封閉(bi)信(xin)(xin)(xin)號(hao)及(ji)聯鎖操(cao)控信(xin)(xin)(xin)號(hao);0°~90°范圍內手動(dong)(dong)(dong)調(diao)理(li)葉片敞開度;(調(diao)理(li)型)。其主(zhu)要(yao)優勢(shi)有:1.漏風量(liang)低、氣密(mi)功能(neng)好;2.電(dian)動(dong)(dong)(dong)敞開耗費電(dian)流小(xiao);3.防(fang)腐功能(neng)強(qiang),運用壽命長;4.執行(xing)機(ji)構驅動(dong)(dong)(dong)靈敏(min),反(fan)應、聯鎖信(xin)(xin)(xin)號(hao)精確。