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排(pai)(pai)(pai)(pai)煙(yan)(yan)閥(fa)是(shi)否存(cun)在(zai)常(chang)(chang)開(kai)的(de)(de)?這(zhe)里的(de)(de)排(pai)(pai)(pai)(pai)煙(yan)(yan)閥(fa)也就(jiu)相當于(yu)排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou),對(dui)于(yu)常(chang)(chang)見的(de)(de)板(ban)式排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou)與(yu)多葉(xie)排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou),市(shi)場上常(chang)(chang)見的(de)(de)均為(wei)常(chang)(chang)閉形式,一(yi)般(ban)(ban)不需要(yao)常(chang)(chang)開(kai)的(de)(de)排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou)。對(dui)于(yu)排(pai)(pai)(pai)(pai)風(feng)(feng)(feng)兼排(pai)(pai)(pai)(pai)煙(yan)(yan)系統(tong)的(de)(de)排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou),可以(yi)采用(yong)“單層(ceng)百葉(xie) + 280 ℃ 電控(kong)排(pai)(pai)(pai)(pai)煙(yan)(yan)防(fang)火(huo)閥(fa)”進(jin)(jin)行控(kong)制。70 ℃防(fang)火(huo)閥(fa)的(de)(de)應用(yong)場合有哪(na)些?防(fang)火(huo)閥(fa)應用(yong)場合很多,在(zai)空(kong)調(diao)送回(hui)風(feng)(feng)(feng)干(gan)管(guan),通風(feng)(feng)(feng)風(feng)(feng)(feng)機進(jin)(jin)出(chu)口(kou),風(feng)(feng)(feng)井入口(kou),管(guan)道(dao)穿越防(fang)火(huo)分區(qu) / 變形縫 / 重要(yao)房(fang)間(jian) / 機房(fang) / 火(huo)災危險(xian)性大的(de)(de)房(fang)間(jian)的(de)(de)隔(ge)墻或(huo)樓板(ban),垂(chui)直風(feng)(feng)(feng)管(guan)與(yu)每層(ceng)水平風(feng)(feng)(feng)管(guan)連(lian)接處。等很多場合都(dou)需要(yao)設置防(fang)火(huo)閥(fa)。 空(kong)調(diao)新(xin)風(feng)(feng)(feng)取風(feng)(feng)(feng)管(guan)是(shi)否需要(yao)安裝防(fang)火(huo)閥(fa)?一(yi)般(ban)(ban)不需要(yao)。特別(bie)是(shi)如(ru)果回(hui)風(feng)(feng)(feng)、送風(feng)(feng)(feng)均安裝防(fang)火(huo)閥(fa)之(zhi)后,新(xin)風(feng)(feng)(feng)取風(feng)(feng)(feng)口(kou)就(jiu)沒有必(bi)要(yao)在(zai)安裝防(fang)火(huo)閥(fa)了(le)。并且一(yi)般(ban)(ban)取風(feng)(feng)(feng)口(kou)位(wei)于(yu)室外,且按照規(gui)范要(yao)求與(yu)排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou)保(bao)持10 m以(yi)上的(de)(de)水平距離或(huo)3 m以(yi)上的(de)(de)垂(chui)直距離( 排(pai)(pai)(pai)(pai)煙(yan)(yan)口(kou)在(zai)上 ),一(yi)般(ban)(ban)煙(yan)(yan)氣不會從新(xin)風(feng)(feng)(feng)口(kou)進(jin)(jin)入空(kong)調(diao),所以(yi)一(yi)般(ban)(ban)不需要(yao)安裝防(fang)火(huo)閥(fa)。
通(tong)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)道(dao)安裝(zhuang)(zhuang)程序(xu):(1)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)組(zu)裝(zhuang)(zhuang):當風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)較(jiao)短時(shi),可(ke)一(yi)次在(zai)(zai)(zai)地(di)面組(zu)裝(zhuang)(zhuang)而成(cheng),當風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)較(jiao)長時(shi),可(ke)視安裝(zhuang)(zhuang)場地(di)的(de)情況(kuang),在(zai)(zai)(zai)地(di)面分(fen)段(duan)組(zu)裝(zhuang)(zhuang)。組(zu)裝(zhuang)(zhuang)時(shi)應(ying)盡量調整風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)的(de)中(zhong)心度和(he)(he)水(shui)平(ping)(ping)度,避免風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)扭曲(qu)或(huo)上下(xia)起波,左右擺龍(long),每段(duan)風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)不宜(yi)超過10m.組(zu)裝(zhuang)(zhuang)時(shi),墊(dian)片應(ying)墊(dian)平(ping)(ping),法(fa)蘭螺栓應(ying)均勻擰緊,螺母帽均朝向(xiang)同一(yi)方(fang)(fang)向(xiang)。(2)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位(wei):風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位(wei)前應(ying)檢查全部(bu)支(zhi)(zhi)架的(de)水(shui)乎(hu)度和(he)(he)標高、檢查支(zhi)(zhi)架的(de)牢固(gu)程度,風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)就(jiu)(jiu)(jiu)位(wei)可(ke)采用(yong)直(zhi)(zhi)接和(he)(he)吊(diao)具兩(liang)種方(fang)(fang)法(fa)。對風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)斷面較(jiao)小,又位(wei)置較(jiao)低的(de)可(ke)采用(yong)人工(gong)(gong)就(jiu)(jiu)(jiu)位(wei)方(fang)(fang)法(fa),只需搭設簡易腳手架即可(ke)。當風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)斷面較(jiao)大(da)且(qie)管(guan)(guan)段(duan)較(jiao)長時(shi),可(ke)采用(yong)滑輪(lun)、倒(dao)鏈、大(da)繩等方(fang)(fang)法(fa)吊(diao)裝(zhuang)(zhuang)。世紀(ji)星介(jie)紹為了便于(yu)風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)就(jiu)(jiu)(jiu)位(wei),一(yi)般(ban)多采用(yong)將風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)吊(diao)在(zai)(zai)(zai)腳手架上,然(ran)后再將其抬(tai)放在(zai)(zai)(zai)風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)支(zhi)(zhi)架上的(de)方(fang)(fang)法(fa)。腳手架應(ying)沿(yan)其風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)長度方(fang)(fang)向(xiang)搭設,高度和(he)(he)位(wei)置應(ying)適(shi)合施工(gong)(gong)操作,吊(diao)裝(zhuang)(zhuang)順(shun)序(xu)應(ying)先干(gan)管(guan)(guan)后支(zhi)(zhi)、立(li)管(guan)(guan),吊(diao)起時(shi),吊(diao)點應(ying)牢固(gu),兩(liang)吊(diao)點應(ying)均勻受力。垂直(zhi)(zhi)風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)可(ke)采用(yong)人工(gong)(gong)和(he)(he)大(da)繩輔助(zhu)就(jiu)(jiu)(jiu)位(wei)。調整風(feng)(feng)(feng)(feng)(feng)(feng)管(guan)(guan)保證垂直(zhi)(zhi)度要(yao)求。(3)風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)調直(zhi)(zhi):就(jiu)(jiu)(jiu)位(wei)在(zai)(zai)(zai)支(zhi)(zhi)架上的(de)風(feng)(feng)(feng)(feng)(feng)(feng)道(dao),應(ying)撥正位(wei)置,調整風(feng)(feng)(feng)(feng)(feng)(feng)道(dao)橫平(ping)(ping)豎直(zhi)(zhi),然(ran)后再按圖集要(yao)求固(gu)定。
1、消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng)(neng)(neng):鍍(du)鋅薄鋼(gang)板風(feng)(feng)(feng)管(guan)(guan):無(wu)消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng)(neng)(neng),自身(shen)震動會產(chan)生(sheng)聲(sheng)音,必(bi)須加(jia)裝消(xiao)聲(sheng)器(qi)(qi)。無(wu)機玻(bo)(bo)璃(li)鋼(gang)風(feng)(feng)(feng)管(guan)(guan):無(wu)消(xiao)聲(sheng)性(xing)(xing)(xing)能(neng)(neng)(neng),隔聲(sheng)性(xing)(xing)(xing)能(neng)(neng)(neng)優于鍍(du)鋅薄鋼(gang)板風(feng)(feng)(feng)管(guan)(guan),必(bi)須加(jia)裝消(xiao)聲(sheng)器(qi)(qi)。復合玻(bo)(bo)纖板風(feng)(feng)(feng)管(guan)(guan):其(qi)管(guan)(guan)壁(bi)是一種多(duo)孔性(xing)(xing)(xing)吸聲(sheng)材料,可(ke)省去專用消(xiao)聲(sheng)器(qi)(qi)。纖維(wei)織物(wu)風(feng)(feng)(feng)管(guan)(guan):其(qi)管(guan)(guan)壁(bi)為柔(rou)性(xing)(xing)(xing)纖維(wei)織物(wu),本(ben)身(shen)就是聲(sheng)音的(de)不良導(dao)體和吸收體,自身(shen)不會產(chan)生(sheng)聲(sheng)音,還(huan)可(ke)以一定程度上(shang)吸收設備噪聲(sheng),隨著管(guan)(guan)道的(de)延長,效(xiao)果(guo)更為明顯,可(ke)省去專用消(xiao)聲(sheng)器(qi)(qi)。2、保(bao)溫性(xing)(xing)(xing)能(neng)(neng)(neng):鍍(du)鋅薄鋼(gang)板風(feng)(feng)(feng)管(guan)(guan):導(dao)熱(re)(re)系(xi)數很大(為60.4 W/m?K),無(wu)保(bao)溫性(xing)(xing)(xing)能(neng)(neng)(neng),必(bi)須另外加(jia)包保(bao)溫層及保(bao)護層。無(wu)機玻(bo)(bo)璃(li)鋼(gang)風(feng)(feng)(feng)管(guan)(guan):導(dao)熱(re)(re)系(xi)數大(為0.5W/m?K),無(wu)保(bao)溫性(xing)(xing)(xing)能(neng)(neng)(neng)。復合玻(bo)(bo)纖板風(feng)(feng)(feng)管(guan)(guan):導(dao)熱(re)(re)系(xi)數小(平(ping)均溫度24℃時小于1W/m?K),有一定保(bao)溫性(xing)(xing)(xing)能(neng)(neng)(neng),不加(jia)裝保(bao)溫。
在葉輪運轉初期及所有定期檢查的時候,只要一有機會,都必須檢查葉輪是否出現裂紋、磨損、積塵等缺陷。只要有可能,都必須使葉輪保持清潔狀態,并定期用鋼絲刷刷去上面的積塵和銹皮等,因為中央空調隨著運行時間的加長,這些灰塵由于不可能均勻地附著在葉輪上,而造成葉輪平衡破壞,以至引起轉子振動。葉輪只要進行了修理,就需要對其再作動平衡。如有條件,可以使用便攜試動平衡儀在現場進行平衡。在作動平衡之前,中央空調批發必須(xu)檢查(cha)所有緊定螺栓是否上緊。因(yin)為葉輪已(yi)經在不(bu)平衡狀態下運行了(le)一段時間,這些螺栓可能(neng)已(yi)經松動。
防火(huo)(huo)閥(fa)(fa)(fa)是用來阻(zu)斷(duan)來自火(huo)(huo)災區的煙氣(qi)及(ji)火(huo)(huo)焰通過,并(bing)在一定時間內能滿足耐火(huo)(huo)穩定性和(he)耐火(huo)(huo)完整性要(yao)求(qiu)的閥(fa)(fa)(fa)門。為(wei)了將(jiang)火(huo)(huo)災引(yin)起的損(sun)失(shi)減(jian)少到小程(cheng)度,就必須采取有效的防火(huo)(huo)、防排(pai)煙措施,以控(kong)制火(huo)(huo)勢蔓(man)延,而防火(huo)(huo)閥(fa)(fa)(fa)在通風、空(kong)調及(ji)防排(pai)煙系統中(zhong)的合(he)理設(she)置,則起到了重要(yao)的作用。防火(huo)(huo)閥(fa)(fa)(fa)的結構(gou)和(he)工作原理,防火(huo)(huo)閥(fa)(fa)(fa)主要(yao)由閥(fa)(fa)(fa)體和(he)執(zhi)行(xing)(xing)機(ji)構(gou)組(zu)成(cheng)(cheng)。閥(fa)(fa)(fa)體由殼(ke)體、法蘭、葉片及(ji)葉片聯動(dong)機(ji)構(gou)等組(zu)成(cheng)(cheng)。執(zhi)行(xing)(xing)機(ji)構(gou)由外殼(ke)、葉片調節機(ji)構(gou)、離合(he)器、溫度熔斷(duan)器等組(zu)成(cheng)(cheng)。防火(huo)(huo)閥(fa)(fa)(fa)的執(zhi)行(xing)(xing)機(ji)構(gou)是通過金(jin)屬易熔片和(he)離合(he)器機(ji)構(gou)來控(kong)制葉片的轉動(dong)。