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消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)(yan)風(feng)(feng)機(ji)廠家產品由多個配(pei)件構成,比如(ru)說葉輪、機(ji)殼、軸承、主(zhu)軸等(deng)等(deng)構成,而(er)不(bu)同(tong)的(de)配(pei)件也(ye)起(qi)著不(bu)同(tong)的(de)作(zuo)用。首先對于(yu)(yu)葉輪而(er)言,一般采用優質鍍鋅板制作(zuo)而(er)成的(de)葉片,通(tong)(tong)過(guo)傾斜設(she)計,與拉伸(shen)成型的(de)前(qian)盤一起(qi)形成了(le)更(geng)合理(li)的(de)流道(dao)(dao)(dao)(dao),從而(er)保(bao)證(zheng)(zheng)了(le)葉輪的(de)高效(xiao)率(lv)。而(er)軸承是帶鑄造座(zuo)的(de)外球面軸承,可以通(tong)(tong)過(guo)外球面配(pei)合調整同(tong)軸度(du)的(de)誤差。主(zhu)軸一般采用45#鋼(gang)經(jing)調制處理(li)后精車而(er)成,保(bao)證(zheng)(zheng)足(zu)夠的(de)光潔(jie)度(du)和(he)(he)尺寸精。另外兩(liang)層板內(nei)部填充(chong)消(xiao)(xiao)聲材(cai)料,能更(geng)有效(xiao)隔熱降噪。消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)(yan)風(feng)(feng)機(ji)不(bu)能距離(li)隧(sui)道(dao)(dao)(dao)(dao)的(de)邊(bian)壁(bi)太近,避免影響通(tong)(tong)風(feng)(feng)效(xiao)果。通(tong)(tong)風(feng)(feng)系統從安全(quan)隧(sui)道(dao)(dao)(dao)(dao)向通(tong)(tong)過(guo)橫(heng)通(tong)(tong)道(dao)(dao)(dao)(dao)向事(shi)故(gu)隧(sui)道(dao)(dao)(dao)(dao)方向送風(feng)(feng),抑制煙(yan)(yan)氣(qi)進入橫(heng)通(tong)(tong)道(dao)(dao)(dao)(dao)及未(wei)發生事(shi)故(gu)的(de)隧(sui)道(dao)(dao)(dao)(dao),滿足(zu)疏散人員迎著新(xin)(xin)風(feng)(feng)進入橫(heng)通(tong)(tong)道(dao)(dao)(dao)(dao)和(he)(he)安全(quan)隧(sui)道(dao)(dao)(dao)(dao)內(nei),同(tong)時保(bao)證(zheng)(zheng)等(deng)待區域所(suo)需(xu)要的(de)新(xin)(xin)鮮空氣(qi)。充(chong)分(fen)利(li)用定(ding)點救援站處的(de)斜井和(he)(he)隧(sui)道(dao)(dao)(dao)(dao)兩(liang)端的(de)消(xiao)(xiao)防(fang)排(pai)(pai)煙(yan)(yan)風(feng)(feng)機(ji)作(zuo)為送入新(xin)(xin)風(feng)(feng)和(he)(he)排(pai)(pai)煙(yan)(yan)的(de)通(tong)(tong)道(dao)(dao)(dao)(dao),通(tong)(tong)風(feng)(feng)必須維(wei)持橫(heng)通(tong)(tong)道(dao)(dao)(dao)(dao)口處于(yu)(yu)正壓狀(zhuang)態,防(fang)止煙(yan)(yan)氣(qi)流向通(tong)(tong)道(dao)(dao)(dao)(dao)內(nei)。
雖然(ran)在(zai)(zai)商業建(jian)(jian)筑(zhu)(zhu)與多(duo)種居住房的被動消防(fang)中(zhong),防(fang)火(huo)(huo)閥是關(guan)鍵組件(jian),但在(zai)(zai)對建(jian)(jian)筑(zhu)(zhu)和其居住者(zhe)的安(an)全保護中(zhong),很多(duo)管(guan)理者(zhe)沒有(you)意識到防(fang)火(huo)(huo)閥的作(zuo)用(yong)以及規定時間(jian)(jian)間(jian)(jian)隔內,防(fang)火(huo)(huo)閥的檢測(ce)、清潔及維護的重要(yao)意義。在(zai)(zai)商業建(jian)(jian)筑(zhu)(zhu)中(zhong)的建(jian)(jian)造中(zhong)我們(men)總會遇(yu)到一些麻煩,試圖在(zai)(zai)能源效率與室內空(kong)氣質量(liang)之(zhi)間(jian)(jian)尋求平(ping)衡就(jiu)是其中(zhong)。大多(duo)商業建(jian)(jian)筑(zhu)(zhu)通(tong)(tong)過機械通(tong)(tong)風或空(kong)調系統解決,能夠測(ce)量(liang)和控制整個(ge)建(jian)(jian)筑(zhu)(zhu)的空(kong)氣變化。在(zai)(zai)通(tong)(tong)風管(guan)道(dao)系統的安(an)裝上就(jiu)存(cun)在(zai)(zai)上面提到的問題———如何(he)在(zai)(zai)延(yan)遲(chi)或阻止(zhi)火(huo)(huo)災蔓延(yan)的建(jian)(jian)筑(zhu)(zhu)防(fang)火(huo)(huo)分隔與所允(yun)許空(kong)氣自(zi)由流通(tong)(tong)的需要(yao)之(zhi)間(jian)(jian)達(da)到平(ping)衡。滿足空(kong)氣自(zi)由流通(tong)(tong)需要(yao)不可避免地再引入一條通(tong)(tong)道(dao),而這卻加快了(le)火(huo)(huo)勢的蔓延(yan)———利用(yong)通(tong)(tong)風管(guan)道(dao)系統使用(yong)的通(tong)(tong)道(dao)。毫無疑問,這中(zhong)斷了(le)防(fang)火(huo)(huo)分隔,充當(dang)了(le)建(jian)(jian)筑(zhu)(zhu)被動消防(fang)護面的“裂口”。
常用的消防排煙風機的結構型式有內冷卻電風葉輪的型式、吸入冷卻電機氣流的型式、前導加動葉型式的低速吸入冷卻風的消防排煙風機等,它們的特點和效果有所不同。 3.1內冷卻電風葉輪的型式,這種排煙風機主流道的煙氣溫度高可達到280℃,煙氣裝在電機上的葉輪輸送,再電機原來裝設冷卻葉輪的地方,不銹鋼通風管廠家重新設計了用于冷卻電機的風扇,與機匣上開的進風口和出風口相連,值得信賴的不銹鋼通風管并(bing)通過電(dian)機與(yu)風(feng)機輪組成(cheng)的(de)(de)(de)簡通道(dao)冷卻電(dian)機。此(ci)型(xing)式的(de)(de)(de)電(dian)機冷卻通道(dao)可以(yi)保(bao)證在主流通道(dao)的(de)(de)(de)溫度達(da)到300℃時,機殼的(de)(de)(de)溫度可以(yi)保(bao)持在130℃左右,在此(ci)環境溫度下,采用一(yi)般的(de)(de)(de)絕緣等(deng)級(ji)的(de)(de)(de)電(dian)機就可以(yi)達(da)到效果(guo),沒有必要采用高溫的(de)(de)(de)絕緣電(dian)機,從(cong)而(er)可以(yi)大(da)大(da)的(de)(de)(de)降(jiang)低風(feng)機的(de)(de)(de)制(zhi)作(zuo)成(cheng)本。這種型(xing)式的(de)(de)(de)軸流消(xiao)防電(dian)機的(de)(de)(de)設計,國(guo)家(jia)鑒定已經下批,已經投入到生產(chan)當中(zhong),并(bing)且獲得了良好的(de)(de)(de)經濟收(shou)益,目前是在進(jin)一(yi)步的(de)(de)(de)研發和改(gai)造當中(zhong),從(cong)而(er)能更好的(de)(de)(de)提高工作(zuo)效率,降(jiang)低制(zhi)造成(cheng)本。
1、消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng):鍍(du)鋅(xin)薄鋼板(ban)風管(guan):無(wu)(wu)消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng),自身震動會產生聲(sheng)音(yin),必(bi)須(xu)加裝(zhuang)(zhuang)消(xiao)聲(sheng)器(qi)。無(wu)(wu)機玻(bo)(bo)璃鋼風管(guan):無(wu)(wu)消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng),隔聲(sheng)性(xing)(xing)(xing)能(neng)優于(yu)鍍(du)鋅(xin)薄鋼板(ban)風管(guan),必(bi)須(xu)加裝(zhuang)(zhuang)消(xiao)聲(sheng)器(qi)。復合玻(bo)(bo)纖(xian)(xian)板(ban)風管(guan):其(qi)管(guan)壁是(shi)一(yi)種多孔性(xing)(xing)(xing)吸(xi)聲(sheng)材(cai)料,可(ke)省去專(zhuan)用(yong)消(xiao)聲(sheng)器(qi)。纖(xian)(xian)維(wei)織物風管(guan):其(qi)管(guan)壁為柔(rou)性(xing)(xing)(xing)纖(xian)(xian)維(wei)織物,本身就是(shi)聲(sheng)音(yin)的(de)不良導體(ti)和吸(xi)收(shou)體(ti),自身不會產生聲(sheng)音(yin),還可(ke)以一(yi)定程(cheng)度(du)上(shang)吸(xi)收(shou)設備噪聲(sheng),隨著管(guan)道的(de)延(yan)長,效(xiao)果更(geng)為明顯,可(ke)省去專(zhuan)用(yong)消(xiao)聲(sheng)器(qi)。2、保(bao)溫(wen)性(xing)(xing)(xing)能(neng):鍍(du)鋅(xin)薄鋼板(ban)風管(guan):導熱(re)系數很大(da)(為60.4 W/m?K),無(wu)(wu)保(bao)溫(wen)性(xing)(xing)(xing)能(neng),必(bi)須(xu)另(ling)外加包(bao)保(bao)溫(wen)層及保(bao)護層。無(wu)(wu)機玻(bo)(bo)璃鋼風管(guan):導熱(re)系數大(da)(為0.5W/m?K),無(wu)(wu)保(bao)溫(wen)性(xing)(xing)(xing)能(neng)。復合玻(bo)(bo)纖(xian)(xian)板(ban)風管(guan):導熱(re)系數小(平(ping)均溫(wen)度(du)24℃時小于(yu)1W/m?K),有一(yi)定保(bao)溫(wen)性(xing)(xing)(xing)能(neng),不加裝(zhuang)(zhuang)保(bao)溫(wen)。