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在空調(diao)(diao)送(song)風(feng)(feng)(feng)系(xi)統中(zhong),空調(diao)(diao)送(song)風(feng)(feng)(feng)機送(song)出的風(feng)(feng)(feng)必(bi)須(xu)通過主(zhu)干(gan)管(guan)(guan)(guan)分配到(dao)支管(guan)(guan)(guan)中(zhong);在排(pai)(pai)煙(yan)(yan)系(xi)統中(zhong),煙(yan)(yan)氣(qi)由支管(guan)(guan)(guan)到(dao)主(zhu)干(gan)管(guan)(guan)(guan)后,進入排(pai)(pai)煙(yan)(yan)風(feng)(feng)(feng)機排(pai)(pai)出。當(dang)建筑物內發生火(huo)(huo)災時,在通風(feng)(feng)(feng)、空調(diao)(diao)系(xi)統中(zhong),為了防(fang)止火(huo)(huo)勢通過送(song)風(feng)(feng)(feng)系(xi)統蔓延,當(dang)送(song)風(feng)(feng)(feng)系(xi)統中(zhong)氣(qi)體溫(wen)度達到(dao)70℃時,防(fang)火(huo)(huo)閥機構上熔斷(duan)(duan)(duan)器動(dong)作,閥門亦迅速關閥,切斷(duan)(duan)(duan)煙(yan)(yan)氣(qi)與(yu)火(huo)(huo)勢沿風(feng)(feng)(feng)管(guan)(guan)(guan)蔓延的通路。同樣,在排(pai)(pai)煙(yan)(yan)系(xi)統中(zhong),發生火(huo)(huo)災時,排(pai)(pai)煙(yan)(yan)閥開啟,進行排(pai)(pai)煙(yan)(yan),為了截斷(duan)(duan)(duan)高溫(wen)煙(yan)(yan)氣(qi)在排(pai)(pai)煙(yan)(yan)管(guan)(guan)(guan)路中(zhong)流動(dong),防(fang)止火(huo)(huo)勢蔓延到(dao)另一(yi)防(fang)火(huo)(huo)分區,當(dang)排(pai)(pai)出的煙(yan)(yan)氣(qi)溫(wen)度達到(dao)280℃時,排(pai)(pai)煙(yan)(yan)防(fang)火(huo)(huo)閥、排(pai)(pai)煙(yan)(yan)口上熔斷(duan)(duan)(duan)器動(dong)作,閥門必(bi)須(xu)自動(dong)關閉(bi),阻(zu)止排(pai)(pai)煙(yan)(yan)。由此可見,防(fang)火(huo)(huo)閥、排(pai)(pai)煙(yan)(yan)閥做(zuo)到(dao)了該(gai)通則通,該(gai)斷(duan)(duan)(duan)則斷(duan)(duan)(duan)的隔煙(yan)(yan)阻(zu)火(huo)(huo)作用(yong)。
一、對通(tong)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道制作(zuo)的(de)要求(qiu)進(jin)行檢(jian)查:檢(jian)查通(tong)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道穿(chuan)越防(fang)護(hu)密(mi)(mi)(mi)閉墻(qiang)、密(mi)(mi)(mi)閉墻(qiang)的(de)預埋密(mi)(mi)(mi)閉穿(chuan)墻(qiang)短管(guan)(guan)(guan)(guan)。通(tong)風(feng)(feng)(feng)預埋密(mi)(mi)(mi)閉短管(guan)(guan)(guan)(guan)采(cai)用(yong)(yong)厚(hou)度(du)不(bu)小(xiao)于3mm鋼(gang)板機(ji)械卷制成形(xing)(其(qi)厚(hou)度(du)還應(ying)根據(ju)預埋管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)徑大小(xiao)確定(ding),使預埋管(guan)(guan)(guan)(guan)不(bu)致變形(xing)),防(fang)爆(bao)超(chao)壓(ya)(ya)排氣活門的(de)預埋短管(guan)(guan)(guan)(guan)其(qi)厚(hou)度(du)為(wei)6mm,密(mi)(mi)(mi)閉短管(guan)(guan)(guan)(guan)中間應(ying)設密(mi)(mi)(mi)閉肋,密(mi)(mi)(mi)閉肋厚(hou)度(du)為(wei)5mm,密(mi)(mi)(mi)閉肋高度(du)為(wei)50mm,密(mi)(mi)(mi)閉肋與(yu)(yu)(yu)短管(guan)(guan)(guan)(guan)應(ying)雙(shuang)面滿(man)焊(han)(han)、焊(han)(han)縫(feng)嚴密(mi)(mi)(mi)。密(mi)(mi)(mi)閉穿(chuan)墻(qiang)短管(guan)(guan)(guan)(guan)兩端深處(chu)墻(qiang)面的(de)長度(du)應(ying)大于100mm,管(guan)(guan)(guan)(guan)道內(nei)外部(bu)除(chu)與(yu)(yu)(yu)混凝土接(jie)觸部(bu)分外均應(ying)刷兩道防(fang)銹漆。二、對風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)連(lian)(lian)(lian)(lian)(lian)接(jie)處(chu)制作(zuo)的(de)要求(qiu)進(jin)行檢(jian)查,對染(ran)毒區(qu)的(de)通(tong)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道連(lian)(lian)(lian)(lian)(lian)接(jie)方法(fa)及密(mi)(mi)(mi)封(feng)進(jin)行檢(jian)查。如(ru)無設計(ji)要求(qiu),其(qi)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)厚(hou)度(du)應(ying)采(cai)用(yong)(yong)大于等于3mm的(de)鋼(gang)板焊(han)(han)接(jie)制作(zuo)而成。風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)與(yu)(yu)(yu)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)連(lian)(lian)(lian)(lian)(lian)接(jie)應(ying)采(cai)用(yong)(yong)焊(han)(han)接(jie)連(lian)(lian)(lian)(lian)(lian)接(jie)。通(tong)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道與(yu)(yu)(yu)密(mi)(mi)(mi)閉閥門的(de)連(lian)(lian)(lian)(lian)(lian)接(jie)應(ying)采(cai)用(yong)(yong)帶(dai)密(mi)(mi)(mi)封(feng)槽的(de)法(fa)蘭連(lian)(lian)(lian)(lian)(lian)接(jie),其(qi)法(fa)蘭面應(ying)經機(ji)床車削加工,保證接(jie)觸應(ying)平(ping)整(zheng),法(fa)蘭面有(you)(you)(you)1~2mm深的(de)90°密(mi)(mi)(mi)封(feng)槽;風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)與(yu)(yu)(yu)設備連(lian)(lian)(lian)(lian)(lian)接(jie)法(fa)蘭之(zhi)間應(ying)采(cai)用(yong)(yong)整(zheng)體橡(xiang)(xiang)膠法(fa)蘭墊圈(quan),防(fang)爆(bao)超(chao)壓(ya)(ya)排氣活門法(fa)蘭連(lian)(lian)(lian)(lian)(lian)接(jie)填(tian)料采(cai)用(yong)(yong)5mm整(zheng)張橡(xiang)(xiang)膠墊圈(quan)密(mi)(mi)(mi)封(feng)(不(bu)得有(you)(you)(you)拼縫(feng)),其(qi)他(ta)染(ran)毒區(qu)風(feng)(feng)(feng)管(guan)(guan)(guan)(guan)連(lian)(lian)(lian)(lian)(lian)接(jie)及法(fa)蘭與(yu)(yu)(yu)設備連(lian)(lian)(lian)(lian)(lian)接(jie)采(cai)用(yong)(yong)4~5mm整(zheng)張橡(xiang)(xiang)膠墊圈(quan)密(mi)(mi)(mi)封(feng)(不(bu)得有(you)(you)(you)拼縫(feng)),連(lian)(lian)(lian)(lian)(lian)接(jie)處(chu)不(bu)得有(you)(you)(you)漏縫(feng)現象(xiang)。
層高過高如何提高制冷效果,解決方(fang)案(an):較(jiao)(jiao)之(zhi)(zhi)于(yu)常規(gui)層高的(de)房(fang)屋(一般為2.6-2.7米左右(you))。別墅的(de)層高一般都為3米甚至以上(shang)的(de)高度。此前提下中央空調(diao)制冷和采暖的(de)配(pei)比(bi)較(jiao)(jiao)之(zhi)(zhi)于(yu)一般層高的(de)房(fang)屋會(hui)(hui)更高。如一般平(ping)層的(de)配(pei)比(bi)為200w/平(ping)方(fang)。別墅為230-280w/平(ping)方(fang)。空調(diao)外(wai)機(ji)需(xu)要(yao)如何擺放較(jiao)(jiao)為合理,解決方(fang)案(an):別墅由于(yu)面(mian)積較(jiao)(jiao)大(da),較(jiao)(jiao)之(zhi)(zhi)于(yu)平(ping)層一般外(wai)機(ji)的(de)功率較(jiao)(jiao)大(da)。體積也就較(jiao)(jiao)之(zhi)(zhi)平(ping)層會(hui)(hui)更大(da)。一般的(de)擺放位(wei)(wei)置位(wei)(wei)于(yu)本(ben)身(shen)建(jian)筑的(de)自留機(ji)位(wei)(wei)或者(zhe)位(wei)(wei)于(yu)門口或者(zhe)陽(yang)臺花園(yuan)的(de)平(ping)臺之(zhi)(zhi)上(shang)。鋪設可供平(ping)衡的(de)水(shui)泥臺面(mian)即可。
它是(shi)近年新(xin)的風管管材(cai),以容(rong)重64 kg / m3、厚度25 mm的離(li)心玻(bo)纖板(ban)為(wei)基材(cai),內復玻(bo)璃絲(si)布,外(wai)復防(fang)潮(chao)鋁(lv)箔布(進口板(ban)材(cai)為(wei)內涂熱(re)敏(min)丙稀酸聚合物,外(wai)層為(wei)稀紋布 / 鋁(lv)箔 / 牛皮紙),用專用防(fang)火粘結劑復合干燥(zao)后,再經切割、開槽、粘結加(jia)固等工(gong)藝而制(zhi)成,采(cai)用特種密封(feng)(feng)膠、壓敏(min)膠帶、熱(re)敏(min)膠帶連接密封(feng)(feng),根據風管斷面尺寸、風壓大小再采(cai)取(qu)適當(dang)的加(jia)固措(cuo)施。具有消聲、保溫(wen)、防(fang)火、防(fang)潮(chao)、漏(lou)風量小、經濟(ji)適用等優(you)(you)點(dian),材(cai)質輕(qing),搬運(yun)吊掛容(rong)易(yi),現場修改方便、易(yi)施工(gong),組裝便捷,需密封(feng)(feng)的連接點(dian)少,節(jie)省安(an)裝空間,熱(re)效高,操(cao)作安(an)靜(jing),工(gong)作壽命長(chang),性能價格(ge)比(bi)優(you)(you),綜合造價低,要防(fang)止被水長(chang)期浸泡。
防(fang)火(huo)(huo)閥的(de)(de)(de)(de)(de)外(wai)(wai)觀,防(fang)火(huo)(huo)閥應外(wai)(wai)觀完好無(wu)損,機械部(bu)分(fen)外(wai)(wai)表無(wu)銹蝕、變(bian)形(xing)或機械損傷。在(zai)其(qi)明顯部(bu)位(wei)設(she)(she)置(zhi)(zhi)(zhi)永久性標(biao)牌,標(biao)明產品名稱(cheng)、型(xing)號(hao)(hao)、規格、耐火(huo)(huo)性能(neng)及商(shang)標(biao)、生(sheng)產單位(wei)(制造商(shang))名稱(cheng)和(he)廠址(zhi)、出日期及產品生(sheng)產批號(hao)(hao)、執行標(biao)準(zhun)等,內(nei)容清(qing)晰,設(she)(she)置(zhi)(zhi)(zhi)牢靠(kao)。防(fang)火(huo)(huo)閥的(de)(de)(de)(de)(de)安(an)裝(zhuang)位(wei)置(zhi)(zhi)(zhi)防(fang)火(huo)(huo)閥主要(yao)(yao)安(an)裝(zhuang)在(zai)風(feng)(feng)管(guan)(guan)靠(kao)近防(fang)火(huo)(huo)分(fen)隔(ge)(ge)處(chu)(chu),暗裝(zhuang)時(shi),安(an)裝(zhuang)部(bu)位(wei)應設(she)(she)置(zhi)(zhi)(zhi)方便維(wei)護的(de)(de)(de)(de)(de)檢修口。具體檢查要(yao)(yao)求(qiu)為:(1)通(tong)風(feng)(feng)、空調系統的(de)(de)(de)(de)(de)風(feng)(feng)管(guan)(guan),在(zai)以下部(bu)位(wei)應設(she)(she)置(zhi)(zhi)(zhi)公(gong)稱(cheng)動作溫度為70℃的(de)(de)(de)(de)(de)防(fang)火(huo)(huo)閥:①穿越(yue)防(fang)火(huo)(huo)分(fen)區處(chu)(chu);②穿越(yue)通(tong)風(feng)(feng)、空調機房(fang)的(de)(de)(de)(de)(de)房(fang)間隔(ge)(ge)墻和(he)樓(lou)板處(chu)(chu);③穿越(yue)重要(yao)(yao)或火(huo)(huo)災危險性大的(de)(de)(de)(de)(de)房(fang)間隔(ge)(ge)墻和(he)樓(lou)板處(chu)(chu);④穿越(yue)防(fang)火(huo)(huo)分(fen)隔(ge)(ge)處(chu)(chu)的(de)(de)(de)(de)(de)變(bian)形(xing)縫兩側;⑤豎向(xiang)風(feng)(feng)管(guan)(guan)與(yu)每層水(shui)平(ping)(ping)(ping)風(feng)(feng)管(guan)(guan)交接處(chu)(chu)的(de)(de)(de)(de)(de)水(shui)平(ping)(ping)(ping)管(guan)(guan)段上。當建筑內(nei)每個防(fang)火(huo)(huo)分(fen)區的(de)(de)(de)(de)(de)通(tong)風(feng)(feng)、空調系統均獨立設(she)(she)置(zhi)(zhi)(zhi)時(shi),水(shui)平(ping)(ping)(ping)風(feng)(feng)管(guan)(guan)與(yu)豎向(xiang)總(zong)管(guan)(guan)的(de)(de)(de)(de)(de)交接處(chu)(chu)可不設(she)(she)置(zhi)(zhi)(zhi)防(fang)火(huo)(huo)閥。(2)公(gong)共建筑的(de)(de)(de)(de)(de)浴室、衛生(sheng)間和(he)廚房(fang)的(de)(de)(de)(de)(de)豎向(xiang)排風(feng)(feng)管(guan)(guan),應采取防(fang)止回流措施,并宜(yi)在(zai)支管(guan)(guan)上設(she)(she)置(zhi)(zhi)(zhi)防(fang)火(huo)(huo)閥。(3)公(gong)共建筑內(nei)廚房(fang)的(de)(de)(de)(de)(de)排油煙管(guan)(guan)道(dao),宜(yi)按防(fang)火(huo)(huo)分(fen)區設(she)(she)置(zhi)(zhi)(zhi),且在(zai)與(yu)豎向(xiang)排風(feng)(feng)管(guan)(guan)連接的(de)(de)(de)(de)(de)支管(guan)(guan)處(chu)(chu)應設(she)(she)置(zhi)(zhi)(zhi)防(fang)火(huo)(huo)閥。
風機分類可以按氣體流動的方向,分為離心式、軸流式、斜流式和橫流式等類型。這種風機分類的機器有:離心風機工作時,動力機(主要是電動機)驅動葉輪在蝸形機殼內旋轉,空氣經吸氣口從葉輪中心處吸入。由于消防風機葉片對氣體的動力作用,氣體壓力和速度得以提高,并在離心力作用下沿著葉道甩向機殼,高品質消防風機從排(pai)氣(qi)口(kou)排(pai)出。因(yin)氣(qi)體(ti)在(zai)葉(xie)輪(lun)(lun)(lun)(lun)內的(de)(de)(de)流(liu)動主要是(shi)在(zai)徑向平(ping)面內,故又稱徑流(liu)風機(ji)(ji)(ji)(ji)(ji)。離心(xin)風機(ji)(ji)(ji)(ji)(ji)主要由葉(xie)輪(lun)(lun)(lun)(lun)和機(ji)(ji)(ji)(ji)(ji)殼組(zu)成,小型風機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)葉(xie)輪(lun)(lun)(lun)(lun)直接裝在(zai)電動機(ji)(ji)(ji)(ji)(ji)上中、大型風機(ji)(ji)(ji)(ji)(ji)通過聯軸(zhou)器或皮帶輪(lun)(lun)(lun)(lun)與電動機(ji)(ji)(ji)(ji)(ji)聯接。離心(xin)風機(ji)(ji)(ji)(ji)(ji)一般為(wei)單側進氣(qi),用單級葉(xie)輪(lun)(lun)(lun)(lun);流(liu)量大的(de)(de)(de)可雙側進氣(qi),用兩個背(bei)靠背(bei)的(de)(de)(de)葉(xie)輪(lun)(lun)(lun)(lun),又稱為(wei)雙吸式離心(xin)風機(ji)(ji)(ji)(ji)(ji)。