汕(shan)尾預(yu)制直(zhi)(zhi)(zhi)埋(mai)(mai)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)由兩種形(xing)式，黑夾克(ke)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)和(he)黃夾克(ke)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)。具有(you)(you)容重(zhong)輕、強度(du)(du)(du)高(gao)、絕熱、耐寒、防(fang)腐、不吸水(shui)、施工簡(jian)便(bian)快捷等優(you)異特點，已成為(wei)建筑、運輸、石油、化(hua)工、電力(li)、冷藏等工業(ye)部門絕熱保溫(wen)(wen)(wen)(wen)，防(fang)水(shui)堵(du)漏(lou)、密封的材料，那么聚氨(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)技(ji)術要(yao)(yao)求是(shi)什么呢(ni)？技(ji)術要(yao)(yao)點一、有(you)(you)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)方法(fa)是(shi)經過管(guan)(guan)(guan)(guan)線天然補(bu)(bu)(bu)償(chang)(chang)(chang)和(he)補(bu)(bu)(bu)償(chang)(chang)(chang)器(qi)（如(ru)方形(xing)和(he)波紋(wen)管(guan)(guan)(guan)(guan)補(bu)(bu)(bu)償(chang)(chang)(chang)器(qi)）來(lai)處理管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)熱伸長(chang)量的，從(cong)而(er)使(shi)熱應力(li)為(wei)Z小；無(wu)(wu)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)簡(jian)單地說即是(shi)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)在受熱時(shi)(shi)沒(mei)有(you)(you)任何補(bu)(bu)(bu)辦辦法(fa)，而(er)是(shi)靠管(guan)(guan)(guan)(guan)材自身強度(du)(du)(du)來(lai)吸收熱應力(li)。汕(shan)尾預(yu)制直(zhi)(zhi)(zhi)埋(mai)(mai)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)技(ji)術要(yao)(yao)點二、無(wu)(wu)補(bu)(bu)(bu)償(chang)(chang)(chang)敷(fu)(fu)(fu)設(she)(she)方法(fa)的基本(ben)原理：在裝置(zhi)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)時(shi)(shi)，首(shou)先(xian)(xian)給(gei)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)加(jia)熱到必定溫(wen)(wen)(wen)(wen)度(du)(du)(du)，然后將(jiang)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)焊(han)接牢固，當(dang)(dang)(dang)(dang)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)恢復到裝置(zhi)溫(wen)(wen)(wen)(wen)度(du)(du)(du)時(shi)(shi)（溫(wen)(wen)(wen)(wen)度(du)(du)(du)下降(jiang)），管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)預(yu)先(xian)(xian)承受了(le)必定的拉應力(li)。當(dang)(dang)(dang)(dang)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)通熱作(zuo)業(ye)時(shi)(shi)，跟著溫(wen)(wen)(wen)(wen)度(du)(du)(du)的添(tian)加(jia)，管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)拉應力(li)為(wei)零，當(dang)(dang)(dang)(dang)持(chi)續升溫(wen)(wen)(wen)(wen)時(shi)(shi)，管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)的壓應力(li)添(tian)加(jia)，當(dang)(dang)(dang)(dang)溫(wen)(wen)(wen)(wen)度(du)(du)(du)升到作(zuo)業(ye)溫(wen)(wen)(wen)(wen)度(du)(du)(du)時(shi)(shi)，管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)的壓應力(li)（熱應力(li)）仍小使(shi)用應力(li)。技(ji)術要(yao)(yao)點三、兩種敷(fu)(fu)(fu)設(she)(she)埋(mai)(mai)設(she)(she)深(shen)(shen)度(du)(du)(du)思(si)考(kao)(kao)不一樣要(yao)(yao)素(su)。（1）選中(zhong)有(you)(you)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)方法(fa)時(shi)(shi)，埋(mai)(mai)設(she)(she)深(shen)(shen)度(du)(du)(du)只思(si)考(kao)(kao)因為(wei)地上(shang)荷載的效果不會損壞(huai)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)的安穩便(bian)可，從(cong)經濟(ji)、施工便(bian)利(li)等方面思(si)考(kao)(kao)。當(dang)(dang)(dang)(dang)選用有(you)(you)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)方法(fa)時(shi)(shi)，盡(jin)量淺埋(mai)(mai)，通常(chang)覆蓋(gai)厚度(du)(du)(du)大于0.6米即可，且與管(guan)(guan)(guan)(guan)徑(jing)粗細無(wu)(wu)關。當(dang)(dang)(dang)(dang)選用無(wu)(wu)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)方法(fa)時(shi)(shi)，埋(mai)(mai)設(she)(she)深(shen)(shen)度(du)(du)(du)要(yao)(yao)思(si)考(kao)(kao)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)的安穩請求，安穩性主(zhu)要(yao)(yao)與覆土厚度(du)(du)(du)有(you)(you)關，通常(chang)比(bi)有(you)(you)補(bu)(bu)(bu)償(chang)(chang)(chang)埋(mai)(mai)的深(shen)(shen)，當(dang)(dang)(dang)(dang)選用不預(yu)熱的無(wu)(wu)補(bu)(bu)(bu)償(chang)(chang)(chang)直(zhi)(zhi)(zhi)埋(mai)(mai)敷(fu)(fu)(fu)設(she)(she)管(guan)(guan)(guan)(guan)道(dao)(dao)(dao)(dao)時(shi)(shi)，Z小覆土厚度(du)(du)(du)應與管(guan)(guan)(guan)(guan)徑(jing)粗細成正比(bi)。聚氨(an)酯(zhi)直(zhi)(zhi)(zhi)埋(mai)(mai)保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)是(shi)由輸送介質的工作(zuo)鋼管(guan)(guan)(guan)(guan)、聚氨(an)酯(zhi)保溫(wen)(wen)(wen)(wen)層、聚乙烯塑料保溫(wen)(wen)(wen)(wen)管(guan)(guan)(guan)(guan)、設(she)(she)備依(yi)次(ci)向(xiang)外結(jie)合(he)而(er)成。