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防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥的(de)(de)(de)外(wai)觀,防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥應(ying)外(wai)觀完好無(wu)損(sun),機械(xie)部(bu)分外(wai)表(biao)無(wu)銹蝕、變(bian)形或機械(xie)損(sun)傷。在(zai)其明顯部(bu)位(wei)(wei)(wei)設(she)置(zhi)(zhi)(zhi)永久性標(biao)牌,標(biao)明產(chan)品(pin)名(ming)稱、型號、規格、耐火(huo)(huo)(huo)(huo)性能及商標(biao)、生(sheng)產(chan)單位(wei)(wei)(wei)(制造商)名(ming)稱和廠(chang)址、出日期及產(chan)品(pin)生(sheng)產(chan)批號、執行標(biao)準等,內(nei)容清(qing)晰,設(she)置(zhi)(zhi)(zhi)牢(lao)靠。防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥的(de)(de)(de)安裝位(wei)(wei)(wei)置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥主(zhu)要安裝在(zai)風(feng)管(guan)(guan)靠近防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)分隔(ge)處(chu),暗裝時,安裝部(bu)位(wei)(wei)(wei)應(ying)設(she)置(zhi)(zhi)(zhi)方便維護的(de)(de)(de)檢(jian)修口(kou)。具體檢(jian)查要求為:(1)通(tong)風(feng)、空調系統的(de)(de)(de)風(feng)管(guan)(guan),在(zai)以下部(bu)位(wei)(wei)(wei)應(ying)設(she)置(zhi)(zhi)(zhi)公(gong)稱動作溫度(du)為70℃的(de)(de)(de)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥:①穿(chuan)(chuan)越(yue)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)分區(qu)處(chu);②穿(chuan)(chuan)越(yue)通(tong)風(feng)、空調機房的(de)(de)(de)房間隔(ge)墻和樓(lou)板處(chu);③穿(chuan)(chuan)越(yue)重要或火(huo)(huo)(huo)(huo)災危險性大(da)的(de)(de)(de)房間隔(ge)墻和樓(lou)板處(chu);④穿(chuan)(chuan)越(yue)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)分隔(ge)處(chu)的(de)(de)(de)變(bian)形縫兩側;⑤豎(shu)(shu)向風(feng)管(guan)(guan)與每層水(shui)(shui)平風(feng)管(guan)(guan)交接(jie)處(chu)的(de)(de)(de)水(shui)(shui)平管(guan)(guan)段(duan)上。當建筑內(nei)每個防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)分區(qu)的(de)(de)(de)通(tong)風(feng)、空調系統均(jun)獨立設(she)置(zhi)(zhi)(zhi)時,水(shui)(shui)平風(feng)管(guan)(guan)與豎(shu)(shu)向總管(guan)(guan)的(de)(de)(de)交接(jie)處(chu)可(ke)不設(she)置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥。(2)公(gong)共(gong)建筑的(de)(de)(de)浴室(shi)、衛生(sheng)間和廚(chu)房的(de)(de)(de)豎(shu)(shu)向排風(feng)管(guan)(guan),應(ying)采取(qu)防(fang)(fang)(fang)(fang)止回流措(cuo)施,并宜在(zai)支(zhi)管(guan)(guan)上設(she)置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥。(3)公(gong)共(gong)建筑內(nei)廚(chu)房的(de)(de)(de)排油煙(yan)管(guan)(guan)道,宜按防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)分區(qu)設(she)置(zhi)(zhi)(zhi),且在(zai)與豎(shu)(shu)向排風(feng)管(guan)(guan)連(lian)接(jie)的(de)(de)(de)支(zhi)管(guan)(guan)處(chu)應(ying)設(she)置(zhi)(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)(huo)(huo)(huo)閥。
在(zai)葉(xie)(xie)輪運(yun)(yun)轉初(chu)期及所有(you)定(ding)期檢(jian)查的時候,只(zhi)要(yao)一有(you)機會(hui),都必須檢(jian)查葉(xie)(xie)輪是否出現裂紋(wen)、磨損、積(ji)塵等缺陷。只(zhi)要(yao)有(you)可(ke)能,都必須使(shi)葉(xie)(xie)輪保(bao)持(chi)清潔狀態,并定(ding)期用(yong)鋼絲刷刷去上面的積(ji)塵和銹皮等,因(yin)為隨著(zhu)運(yun)(yun)行(xing)時間的加長,這些(xie)灰塵由于(yu)不可(ke)能均勻地附著(zhu)在(zai)葉(xie)(xie)輪上,而造成葉(xie)(xie)輪平(ping)衡(heng)(heng)(heng)破(po)壞,以至引起轉子振動(dong)(dong)。葉(xie)(xie)輪只(zhi)要(yao)進(jin)行(xing)了(le)修理,就需(xu)要(yao)對其(qi)再(zai)作(zuo)動(dong)(dong)平(ping)衡(heng)(heng)(heng)。如(ru)有(you)條件,可(ke)以使(shi)用(yong)便攜試動(dong)(dong)平(ping)衡(heng)(heng)(heng)儀在(zai)現場(chang)進(jin)行(xing)平(ping)衡(heng)(heng)(heng)。在(zai)作(zuo)動(dong)(dong)平(ping)衡(heng)(heng)(heng)之前(qian),必須檢(jian)查所有(you)緊定(ding)螺栓是否上緊。因(yin)為葉(xie)(xie)輪已經在(zai)不平(ping)衡(heng)(heng)(heng)狀態下運(yun)(yun)行(xing)了(le)一段(duan)時間,這些(xie)螺栓可(ke)能已經松(song)動(dong)(dong)。
1、 薄鋼板矩形風管的剛度不夠,表現形式:風管的大邊上下有不同程度的下沉,兩側面小邊稍向外凸出,有明顯的變形。黔江風機對產生的原因分析:① 制作風管的鋼板厚度不符合施工及驗收規范的要求;② 咬口的形式選擇不當;③ 沒有按照《施工及驗收規范》要求,對于邊長≥630 mm或保溫風管≥800 mm,其管長在1 200mm以上,均應采取加固措施。2 、薄鋼板矩形風管扭曲、翹角,表現形式:風管表面不平;對角線不相等;相鄰表面互不垂直;兩相對表面不平行及兩管端平面不平行等。風機產生(sheng)的(de)(de)原因分析:① 矩形板料下料后,未對四個角進(jin)行(xing)嚴格的(de)(de)角方(fang)測量;② 風管的(de)(de)大邊或小邊的(de)(de)兩(liang)個相對面的(de)(de)板料長度和寬(kuan)度不(bu)相等;③ 風管的(de)(de)四個角處(chu)的(de)(de)咬口寬(kuan)度不(bu)相等;④ 手工咬口合縫受力不(bu)均。
1、消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)性(xing)能(neng):鍍鋅薄(bo)鋼(gang)板風(feng)管(guan)(guan):無(wu)(wu)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)性(xing)能(neng),自(zi)身震動會產生(sheng)聲(sheng)(sheng)音,必(bi)須加裝消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)。無(wu)(wu)機玻(bo)璃鋼(gang)風(feng)管(guan)(guan):無(wu)(wu)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)性(xing)能(neng),隔聲(sheng)(sheng)性(xing)能(neng)優于鍍鋅薄(bo)鋼(gang)板風(feng)管(guan)(guan),必(bi)須加裝消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)。復合玻(bo)纖(xian)(xian)板風(feng)管(guan)(guan):其(qi)管(guan)(guan)壁是一(yi)種多(duo)孔性(xing)吸聲(sheng)(sheng)材(cai)料,可(ke)省(sheng)去專(zhuan)用(yong)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)。纖(xian)(xian)維織(zhi)物(wu)風(feng)管(guan)(guan):其(qi)管(guan)(guan)壁為柔性(xing)纖(xian)(xian)維織(zhi)物(wu),本身就是聲(sheng)(sheng)音的不(bu)(bu)良導體和吸收體,自(zi)身不(bu)(bu)會產生(sheng)聲(sheng)(sheng)音,還可(ke)以一(yi)定程度上吸收設備噪(zao)聲(sheng)(sheng),隨著(zhu)管(guan)(guan)道的延(yan)長,效(xiao)果更(geng)為明(ming)顯,可(ke)省(sheng)去專(zhuan)用(yong)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)器(qi)。2、保(bao)(bao)溫(wen)(wen)(wen)(wen)性(xing)能(neng):鍍鋅薄(bo)鋼(gang)板風(feng)管(guan)(guan):導熱(re)系數(shu)(shu)很大(為60.4 W/m?K),無(wu)(wu)保(bao)(bao)溫(wen)(wen)(wen)(wen)性(xing)能(neng),必(bi)須另外加包保(bao)(bao)溫(wen)(wen)(wen)(wen)層及保(bao)(bao)護層。無(wu)(wu)機玻(bo)璃鋼(gang)風(feng)管(guan)(guan):導熱(re)系數(shu)(shu)大(為0.5W/m?K),無(wu)(wu)保(bao)(bao)溫(wen)(wen)(wen)(wen)性(xing)能(neng)。復合玻(bo)纖(xian)(xian)板風(feng)管(guan)(guan):導熱(re)系數(shu)(shu)小(xiao)(平均溫(wen)(wen)(wen)(wen)度24℃時小(xiao)于1W/m?K),有(you)一(yi)定保(bao)(bao)溫(wen)(wen)(wen)(wen)性(xing)能(neng),不(bu)(bu)加裝保(bao)(bao)溫(wen)(wen)(wen)(wen)。
消防(fang)排(pai)(pai)煙(yan)(yan)機(ji)(ji)(ji)(ji)(ji)一(yi)(yi)般是采(cai)(cai)用離心式風(feng)機(ji)(ji)(ji)(ji)(ji)和(he)軸(zhou)流(liu)(liu)式風(feng)機(ji)(ji)(ji)(ji)(ji)兩種(zhong)(zhong)重要的(de)(de)(de)型(xing)式。從消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)風(feng)量(liang)、風(feng)壓(ya)考慮來看,消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)是高(gao)比轉高(gao)效率的(de)(de)(de)風(feng)機(ji)(ji)(ji)(ji)(ji),更加的(de)(de)(de)適(shi)合選(xuan)用軸(zhou)流(liu)(liu)風(feng)機(ji)(ji)(ji)(ji)(ji)。軸(zhou)流(liu)(liu)式消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)有(you)兩種(zhong)(zhong)設計型(xing)式,一(yi)(yi)種(zhong)(zhong)為電機(ji)(ji)(ji)(ji)(ji)與(yu)主(zhu)氣(qi)(qi)(qi)流(liu)(liu)分(fen)(fen)離型(xing)式,另一(yi)(yi)種(zhong)(zhong)為電機(ji)(ji)(ji)(ji)(ji)置于(yu)(yu)主(zhu)氣(qi)(qi)(qi)流(liu)(liu)之(zhi)中。根(gen)據煙(yan)(yan)氣(qi)(qi)(qi)溫(wen)(wen)度(du)的(de)(de)(de)不(bu)(bu)同(tong),采(cai)(cai)用不(bu)(bu)同(tong)型(xing)式的(de)(de)(de)消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji),溫(wen)(wen)度(du)大于(yu)(yu)400℃時,采(cai)(cai)用電機(ji)(ji)(ji)(ji)(ji)與(yu)主(zhu)氣(qi)(qi)(qi)流(liu)(liu)分(fen)(fen)離型(xing)式,溫(wen)(wen)度(du)小于(yu)(yu)400℃大于(yu)(yu)150℃,兩種(zhong)(zhong)型(xing)式的(de)(de)(de)電機(ji)(ji)(ji)(ji)(ji)都可(ke)以(yi)(yi)選(xuan)擇,在(zai)(zai)溫(wen)(wen)度(du)小于(yu)(yu)150℃的(de)(de)(de)時候,采(cai)(cai)用電機(ji)(ji)(ji)(ji)(ji)置于(yu)(yu)主(zhu)氣(qi)(qi)(qi)流(liu)(liu)之(zhi)中。 軸(zhou)流(liu)(liu)消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)流(liu)(liu)量(liang)范圍從7200m?/h至110000m?/h,有(you)不(bu)(bu)同(tong)型(xing)號(hao)的(de)(de)(de)編制,用來滿足不(bu)(bu)同(tong)通(tong)風(feng)排(pai)(pai)煙(yan)(yan)流(liu)(liu)量(liang)的(de)(de)(de)需求(qiu)(qiu)。消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)可(ke)以(yi)(yi)根(gen)據壓(ya)力(li)情況的(de)(de)(de)不(bu)(bu)同(tong)分(fen)(fen)為兩種(zhong)(zhong)類(lei)(lei)型(xing),一(yi)(yi)類(lei)(lei)為軸(zhou)流(liu)(liu)式消防(fang)排(pai)(pai)煙(yan)(yan)機(ji)(ji)(ji)(ji)(ji),其各機(ji)(ji)(ji)(ji)(ji)號(hao)的(de)(de)(de)壓(ya)力(li)在(zai)(zai)600Pa左(zuo)右(you),另一(yi)(yi)類(lei)(lei)為斜流(liu)(liu)消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji),各機(ji)(ji)(ji)(ji)(ji)號(hao)的(de)(de)(de)壓(ya)力(li)在(zai)(zai)1000Pa左(zuo)右(you)。為了(le)滿足排(pai)(pai)煙(yan)(yan)量(liang)和(he)通(tong)風(feng)換氣(qi)(qi)(qi)的(de)(de)(de)要求(qiu)(qiu),消防(fang)排(pai)(pai)煙(yan)(yan)風(feng)機(ji)(ji)(ji)(ji)(ji)一(yi)(yi)般都設計了(le)雙速(su)型(xing)的(de)(de)(de)結構模(mo)式。低(di)速(su)可(ke)以(yi)(yi)通(tong)風(feng)使用,高(gao)速(su)可(ke)以(yi)(yi)排(pai)(pai)放煙(yan)(yan)霧,這樣不(bu)(bu)但(dan)可(ke)以(yi)(yi)節(jie)約(yue)能源同(tong)時又降低(di)了(le)噪聲(sheng)污染。