成都高品質通風管廠家

1. 技(ji)術(shu)背(bei)景,在(zai)(zai)焊(han)(han)接接頭中(zhong)由于焊(han)(han)接所引起的(de)(de)各(ge)種(zhong)(zhong)(zhong)(zhong)裂(lie)(lie)紋(wen)(wen)，統稱(cheng)焊(han)(han)接裂(lie)(lie)紋(wen)(wen)。焊(han)(han)接裂(lie)(lie)紋(wen)(wen)在(zai)(zai)焊(han)(han)縫金(jin)屬與熱影響(xiang)區中(zhong)都可能產(chan)(chan)(chan)生(sheng)(sheng)，是焊(han)(han)接凝固冶(ye)金(jin)和固相(xiang)冶(ye)金(jin)過(guo)(guo)程中(zhong)產(chan)(chan)(chan)生(sheng)(sheng)為(wei)危險的(de)(de)一種(zhong)(zhong)(zhong)(zhong)缺(que)陷(xian)。焊(han)(han)接結(jie)構(gou)產(chan)(chan)(chan)生(sheng)(sheng)的(de)(de)破壞事故大部分都是焊(han)(han)接裂(lie)(lie)紋(wen)(wen)所引起的(de)(de)。隨著現代工業的(de)(de)發展，焊(han)(han)接結(jie)構(gou)也趨向(xiang)大型(xing)化、大容量和高(gao)參數發展。有的(de)(de)在(zai)(zai)低(di)溫、腐(fu)蝕介質下工作，也有的(de)(de)在(zai)(zai)高(gao)溫高(gao)壓下工作，廣(guang)泛都用到各(ge)種(zhong)(zhong)(zhong)(zhong)高(gao)合金(jin)鋼、不銹鋼，以及種(zhong)(zhong)(zhong)(zhong)種(zhong)(zhong)(zhong)(zhong)合金(jin)材料。這些(xie)材料往往都對裂(lie)(lie)紋(wen)(wen)十分敏感，而(er)裂(lie)(lie)紋(wen)(wen)卻又是大多重(zhong)大事故的(de)(de)誘因，必須(xu)十分重(zhong)視。焊(han)(han)接裂(lie)(lie)紋(wen)(wen)種(zhong)(zhong)(zhong)(zhong)類(lei)繁(fan)多，產(chan)(chan)(chan)生(sheng)(sheng)的(de)(de)條件和原因各(ge)不相(xiang)同。有些(xie)裂(lie)(lie)紋(wen)(wen)在(zai)(zai)焊(han)(han)后(hou)立即產(chan)(chan)(chan)生(sheng)(sheng)了，有些(xie)在(zai)(zai)焊(han)(han)后(hou)延續一定(ding)時間再產(chan)(chan)(chan)生(sheng)(sheng)，甚(shen)至(zhi)在(zai)(zai)使用過(guo)(guo)程中(zhong)，在(zai)(zai)一定(ding)的(de)(de)外(wai)界條件誘發下再產(chan)(chan)(chan)生(sheng)(sheng)。裂(lie)(lie)紋(wen)(wen)既出現在(zai)(zai)焊(han)(han)縫和熱影響(xiang)區表面，也產(chan)(chan)(chan)生(sheng)(sheng)在(zai)(zai)其(qi)內(nei)部。它對焊(han)(han)接結(jie)構(gou)的(de)(de)危害有以下幾點。

1、消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)性(xing)能(neng)(neng)(neng)：鍍鋅(xin)薄鋼(gang)板(ban)風(feng)(feng)(feng)管(guan)(guan)：無(wu)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)性(xing)能(neng)(neng)(neng)，自(zi)身震動會(hui)產生聲(sheng)(sheng)(sheng)音，必須(xu)加(jia)裝消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)。無(wu)機(ji)玻璃(li)鋼(gang)風(feng)(feng)(feng)管(guan)(guan)：無(wu)消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)性(xing)能(neng)(neng)(neng)，隔聲(sheng)(sheng)(sheng)性(xing)能(neng)(neng)(neng)優于鍍鋅(xin)薄鋼(gang)板(ban)風(feng)(feng)(feng)管(guan)(guan)，必須(xu)加(jia)裝消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)。復(fu)合玻纖(xian)板(ban)風(feng)(feng)(feng)管(guan)(guan)：其管(guan)(guan)壁(bi)是(shi)一種多孔性(xing)吸聲(sheng)(sheng)(sheng)材料(liao)，可省去專(zhuan)用消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)。纖(xian)維織物(wu)風(feng)(feng)(feng)管(guan)(guan)：其管(guan)(guan)壁(bi)為(wei)(wei)柔性(xing)纖(xian)維織物(wu)，本身就是(shi)聲(sheng)(sheng)(sheng)音的不良導體和吸收體，自(zi)身不會(hui)產生聲(sheng)(sheng)(sheng)音，還(huan)可以一定程度(du)上吸收設備噪聲(sheng)(sheng)(sheng)，隨(sui)著(zhu)管(guan)(guan)道的延長，效果(guo)更為(wei)(wei)明顯，可省去專(zhuan)用消(xiao)(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)器(qi)。2、保(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng)(neng)(neng)：鍍鋅(xin)薄鋼(gang)板(ban)風(feng)(feng)(feng)管(guan)(guan)：導熱系數很大(da)(為(wei)(wei)60.4 W/m?K)，無(wu)保(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng)(neng)(neng)，必須(xu)另外加(jia)包保(bao)(bao)(bao)溫(wen)(wen)層及保(bao)(bao)(bao)護層。無(wu)機(ji)玻璃(li)鋼(gang)風(feng)(feng)(feng)管(guan)(guan)：導熱系數大(da)(為(wei)(wei)0.5W/m?K)，無(wu)保(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng)(neng)(neng)。復(fu)合玻纖(xian)板(ban)風(feng)(feng)(feng)管(guan)(guan)：導熱系數小(平均溫(wen)(wen)度(du)24℃時(shi)小于1W/m?K)，有一定保(bao)(bao)(bao)溫(wen)(wen)性(xing)能(neng)(neng)(neng)，不加(jia)裝保(bao)(bao)(bao)溫(wen)(wen)。

1．冷(熱)水機組的基本工作過程是：室外的制冷機組對冷(熱)媒水進行制冷降溫(或加熱升溫)，然后由水泵將降溫后的冷媒(熱)水輸送到安裝在室內的風機盤管機組中，由風機盤管機組采取就地回風的方式與室內空氣進行熱交換實現對室內空氣處理的目的。2．風管(道)式機組的基本工作過程是：供冷時，室外高品質通風管的制冷機組吸收來自室內機組的制冷劑蒸氣經壓縮、冷凝后向各室內機組輸送液體制冷劑。供熱時，室外的制冷機組吸收來自冷凝器的制冷劑蒸氣經壓縮后向各室內機組輸送汽體制冷劑，室內機組通過布置在天花板上的回風口將空氣吸入，通風管廠家進行(xing)熱交換后送(song)入安裝(zhuang)在(zai)室(shi)內各(ge)(ge)房間天花板(ban)中的風(feng)(feng)管(道)內，并通過(guo)出風(feng)(feng)口上的散流(liu)器向室(shi)內各(ge)(ge)房間輸(shu)送(song)空氣(qi)。在(zai)風(feng)(feng)管(道)上設計有新風(feng)(feng)門和排(pai)風(feng)(feng)門，可以按一定比(bi)例(li)置(zhi)換空氣(qi)，以保證室(shi)內空氣(qi)的質(zhi)量。

1.風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)程度(du)(du)安(an)(an)裝，邊(bian)(bian)長尺寸小于(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)400mm，間(jian)(jian)距不(bu)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)4m；大(da)于(yu)(yu)(yu)400mm，不(bu)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)3m；對于(yu)(yu)(yu)薄鋼(gang)(gang)(gang)板法蘭(lan)的(de)(de)(de)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)，其支(zhi)、吊架(jia)間(jian)(jian)距不(bu)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)3m。2.風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)垂直(zhi)安(an)(an)裝，間(jian)(jian)距不(bu)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)4m，單根直(zhi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)至少(shao)應(ying)(ying)(ying)有2個(ge)固(gu)定點(dian)(dian)。3.支(zhi)、吊架(jia)不(bu)宜(yi)設置在風(feng)(feng)口、閥門、檢討門及自控機構處(chu)，離風(feng)(feng)口或(huo)插接管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)距離不(bu)宜(yi)小于(yu)(yu)(yu)200mm。4.當程度(du)(du)懸吊的(de)(de)(de)主、干風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)長度(du)(du)超過20m時，應(ying)(ying)(ying)設置防(fang)止擺動固(gu)定點(dian)(dian)，每個(ge)系(xi)統(tong)不(bu)應(ying)(ying)(ying)少(shao)于(yu)(yu)(yu)1個(ge)。5.防(fang)火閥直(zhi)徑或(huo)長邊(bian)(bian)尺寸大(da)于(yu)(yu)(yu)等(deng)于(yu)(yu)(yu)630mm時，宜(yi)設獨立支(zhi)、吊架(jia)。6.帶(dai)高效過濾器的(de)(de)(de)送風(feng)(feng)口，應(ying)(ying)(ying)采(cai)取(qu)可分(fen)離調節高度(du)(du)的(de)(de)(de)吊桿。金屬風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)加(jia)(jia)(jia)固(gu)：矩形風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)邊(bian)(bian)長大(da)于(yu)(yu)(yu)630mm、保溫風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)邊(bian)(bian)長大(da)于(yu)(yu)(yu)800mm，并且管(guan)(guan)(guan)(guan)(guan)(guan)(guan)段長度(du)(du)大(da)于(yu)(yu)(yu)1250mm或(huo)低(di)壓風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)單邊(bian)(bian)平面積大(da)于(yu)(yu)(yu)1.2m2、中(zhong)、高壓風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)大(da)于(yu)(yu)(yu)1.0m2中(zhong)，均應(ying)(ying)(ying)采(cai)用加(jia)(jia)(jia)固(gu)辦法。角(jiao)鋼(gang)(gang)(gang)、加(jia)(jia)(jia)固(gu)筋的(de)(de)(de)加(jia)(jia)(jia)固(gu)，其高度(du)(du)應(ying)(ying)(ying)小于(yu)(yu)(yu)或(huo)等(deng)于(yu)(yu)(yu)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)寬度(du)(du)。角(jiao)鋼(gang)(gang)(gang)、加(jia)(jia)(jia)固(gu)筋與風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)鉚接的(de)(de)(de)間(jian)(jian)隔應(ying)(ying)(ying)均勻，不(bu)應(ying)(ying)(ying)大(da)于(yu)(yu)(yu)220mm。.對于(yu)(yu)(yu)凈化空調系(xi)統(tong)，不(bu)應(ying)(ying)(ying)在風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)內設加(jia)(jia)(jia)固(gu)框及加(jia)(jia)(jia)固(gu)筋。

消(xiao)(xiao)(xiao)防(fang)排煙風機(ji)首先應該(gai)滿足溫(wen)度(du)和時間的特(te)性(xing)(xing)，即國家規(gui)定280℃/0.5h；其(qi)次，在一般(ban)環境溫(wen)度(du)下(xia)(xia)，可(ke)(ke)以(yi)保證有效的排煙控(kong)制量。此外還要(yao)求(qiu)消(xiao)(xiao)(xiao)防(fang)排煙風機(ji)能(neng)夠進行(xing)周期性(xing)(xing)的實(shi)驗，能(neng)夠發現其(qi)中的不(bu)足，并加以(yi)改進；可(ke)(ke)以(yi)適(shi)用(yong)(yong)(yong)(yong)(yong)(yong)各種通(tong)風要(yao)求(qiu)的管道，便(bian)于(yu)安(an)裝(zhuang)(zhuang)與使用(yong)(yong)(yong)(yong)(yong)(yong)。消(xiao)(xiao)(xiao)防(fang)排煙風機(ji)的性(xing)(xing)能(neng)優良(liang)、耐高(gao)溫(wen)性(xing)(xing)能(neng)良(liang)好、效率高(gao)、占地比離心(xin)風機(ji)少、高(gao)溫(wen)性(xing)(xing)能(neng)優良(liang)。消(xiao)(xiao)(xiao)防(fang)排煙風機(ji)能(neng)在300℃高(gao)溫(wen)條件下(xia)(xia)連續運行(xing)60分鐘以(yi)上，100℃溫(wen)度(du)條件下(xia)(xia)連續20小時不(bu)損壞，應用(yong)(yong)(yong)(yong)(yong)(yong)范圍(wei)廣(guang)，可(ke)(ke)根據高(gao)級(ji)民用(yong)(yong)(yong)(yong)(yong)(yong)建(jian)筑的不(bu)同(tong)要(yao)求(qiu)，采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)變速或多速的驅(qu)動型式，消(xiao)(xiao)(xiao)防(fang)排煙風機(ji)廣(guang)泛應用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)高(gao)級(ji)民用(yong)(yong)(yong)(yong)(yong)(yong)建(jian)筑、烤箱(xiang)、地下(xia)(xia)車庫(ku)、隧道等場合。安(an)裝(zhuang)(zhuang)方(fang)便(bian)，可(ke)(ke)直(zhi)接和墻壁安(an)裝(zhuang)(zhuang)，安(an)裝(zhuang)(zhuang)可(ke)(ke)采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)垂直(zhi)式、水平式或吊裝(zhuang)(zhuang)式，很大程(cheng)度(du)上節省了占地面積。