保冷管道的施工做法包括選用什么材料

保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)的分類：保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)安(an)裝使(shi)用(yong)(yong)(yong)溫(wen)(wen)度分為常溫(wen)(wen)防結露保(bao)(bao)(bao)溫(wen)(wen)材(cai)料(liao)和超低溫(wen)(wen)保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)，常溫(wen)(wen)保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)一般是中央空調管(guan)(guan)(guan)道(dao)中使(shi)用(yong)(yong)(yong)，防結露保(bao)(bao)(bao)溫(wen)(wen)材(cai)料(liao)，空調風筒保(bao)(bao)(bao)溫(wen)(wen)材(cai)料(liao)主(zhu)要(yao)是玻璃棉板(ban)和橡(xiang)塑板(ban)以(yi)及(ji)聚(ju)(ju)乙烯(xi)發(fa)泡(pao)保(bao)(bao)(bao)溫(wen)(wen)板(ban)，中央空調通風管(guan)(guan)(guan)道(dao)采用(yong)(yong)(yong)橡(xiang)塑保(bao)(bao)(bao)溫(wen)(wen)管(guan)(guan)(guan)，聚(ju)(ju)氨(an)酯(zhi)(zhi)保(bao)(bao)(bao)溫(wen)(wen)管(guan)(guan)(guan)，聚(ju)(ju)乙烯(xi)發(fa)泡(pao)保(bao)(bao)(bao)溫(wen)(wen)管(guan)(guan)(guan)，管(guan)(guan)(guan)托(tuo)采用(yong)(yong)(yong)聚(ju)(ju)乙烯(xi)管(guan)(guan)(guan)托(tuo)，木托(tuo)，聚(ju)(ju)氨(an)酯(zhi)(zhi)管(guan)(guan)(guan)托(tuo)和低溫(wen)(wen)粘(zhan)合劑。超低溫(wen)(wen)管(guan)(guan)(guan)道(dao)使(shi)用(yong)(yong)(yong)在液氮介質保(bao)(bao)(bao)溫(wen)(wen)工程和燃氣儲(chu)備系統保(bao)(bao)(bao)冷(leng)(leng)工程，采用(yong)(yong)(yong)的保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)主(zhu)要(yao)是聚(ju)(ju)乙烯(xi)發(fa)泡(pao)保(bao)(bao)(bao)冷(leng)(leng)管(guan)(guan)(guan)殼(ke)，聚(ju)(ju)氨(an)酯(zhi)(zhi)發(fa)泡(pao)保(bao)(bao)(bao)冷(leng)(leng)管(guan)(guan)(guan)殼(ke)，聚(ju)(ju)氨(an)酯(zhi)(zhi)管(guan)(guan)(guan)托(tuo)等(deng)系列保(bao)(bao)(bao)冷(leng)(leng)材(cai)料(liao)。

　　保(bao)(bao)(bao)冷(leng)(leng)(leng)材(cai)(cai)料(liao)的(de)(de)使用標(biao)(biao)準(zhun)：保(bao)(bao)(bao)冷(leng)(leng)(leng)材(cai)(cai)料(liao)導(dao)(dao)(dao)熱是決定材(cai)(cai)料(liao)性(xing)能的(de)(de)主(zhu)要標(biao)(biao)準(zhun)，其(qi)次氧(yang)化指(zhi)標(biao)(biao)是保(bao)(bao)(bao)障阻燃性(xing)能的(de)(de)標(biao)(biao)準(zhun)之(zhi)一(yi)，密度是決定保(bao)(bao)(bao)冷(leng)(leng)(leng)材(cai)(cai)料(liao)壽(shou)命(ming)和保(bao)(bao)(bao)冷(leng)(leng)(leng)效(xiao)果的(de)(de)一(yi)種(zhong)標(biao)(biao)準(zhun)。玻璃棉的(de)(de)導(dao)(dao)(dao)熱系(xi)(xi)數是W/m.k 0.049-0.042 0.045-0.032 GB/T 13350-2000，橡塑保(bao)(bao)(bao)溫(wen)材(cai)(cai)料(liao)的(de)(de)導(dao)(dao)(dao)熱系(xi)(xi)數是，導(dao)(dao)(dao)熱系(xi)(xi)數為0.034w/mk，聚(ju)(ju)乙烯發泡(pao)保(bao)(bao)(bao)溫(wen)管的(de)(de)導(dao)(dao)(dao)熱系(xi)(xi)數是0.028-0.032w/mk，聚(ju)(ju)氨酯發泡(pao)導(dao)(dao)(dao)熱系(xi)(xi)數是0.018~0.024w/（m．k）保(bao)(bao)(bao)冷(leng)(leng)(leng)材(cai)(cai)料(liao)的(de)(de)阻燃標(biao)(biao)準(zhun)一(yi)般氧(yang)化指(zhi)標(biao)(biao)24-30之(zhi)間(jian)，不同的(de)(de)材(cai)(cai)料(liao)阻燃效(xiao)果有區別。阻燃選擇B1級保(bao)(bao)(bao)冷(leng)(leng)(leng)效(xiao)果是首先選擇的(de)(de)。

　　保冷材料(liao)(liao)的(de)安(an)(an)裝(zhuang)要求(qiu)：管道(dao)安(an)(an)裝(zhuang)保冷材料(liao)(liao)要考(kao)慮(lv)密封(feng)效(xiao)果和粘接性能，管道(dao)外護材料(liao)(liao)采(cai)用(yong)鋁皮(pi)保溫(wen)(wen)(wen)(wen)(wen)，管道(dao)密封(feng)材料(liao)(liao)采(cai)用(yong)瑪蹄脂或許密封(feng)膠和防(fang)潮層(ceng)。聚氨酯管托和聚乙烯發泡(pao)管在超低(di)(di)溫(wen)(wen)(wen)(wen)(wen)環境下，防(fang)水性能和防(fang)結(jie)露性能良好。儲罐(guan)(guan)(guan)建造中(zhong)(zhong)主(zhu)(zhu)要以LNG為主(zhu)(zhu)，而(er)(er)大型(xing)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)儲罐(guan)(guan)(guan)的(de)建造較(jiao)少，我們通常所(suo)指的(de) 低(di)(di)溫(wen)(wen)(wen)(wen)(wen)罐(guan)(guan)(guan)是(shi)(shi)以公稱(cheng)(cheng)容積大于或等于l0000m ，設(she)計溫(wen)(wen)(wen)(wen)(wen)度(du)不(bu)高(gao)于一(yi)(yi)45℃且不(bu)低(di)(di)于一(yi)(yi)168℃的(de)立(li)式圓筒形(xing)低(di)(di) 溫(wen)(wen)(wen)(wen)(wen)儲罐(guan)(guan)(guan)。低(di)(di)溫(wen)(wen)(wen)(wen)(wen)鋼對主(zhu)(zhu)體安(an)(an)裝(zhuang)工(gong)藝(yi)(yi)的(de)要求(qiu)非常嚴格(ge)，特別(bie)是(shi)(shi)對于施工(gong)工(gong)序(xu)及安(an)(an)裝(zhuang)順序(xu)的(de)要求(qiu)儲罐(guan)(guan)(guan)建造中(zhong)(zhong)主(zhu)(zhu)要以原油儲罐(guan)(guan)(guan)為主(zhu)(zhu)，而(er)(er)大型(xing)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)儲罐(guan)(guan)(guan)的(de)建造較(jiao)少。低(di)(di)溫(wen)(wen)(wen)(wen)(wen)罐(guan)(guan)(guan)是(shi)(shi)以公稱(cheng)(cheng)容積大于或等于l0000m ，設(she)計溫(wen)(wen)(wen)(wen)(wen)度(du)不(bu)高(gao)于一(yi)(yi)45℃且不(bu)低(di)(di)于一(yi)(yi)168℃的(de)立(li)式圓筒形(xing)低(di)(di) 溫(wen)(wen)(wen)(wen)(wen)儲罐(guan)(guan)(guan)。低(di)(di)溫(wen)(wen)(wen)(wen)(wen)鋼對主(zhu)(zhu)體安(an)(an)裝(zhuang)工(gong)藝(yi)(yi)的(de)要求(qiu)非常嚴格(ge)，特別(bie)是(shi)(shi)對于施工(gong)工(gong)序(xu)及安(an)(an)裝(zhuang)順序(xu)的(de)要求(qiu)。