保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)道(dao)(dao)廣泛用于液體、氣體的(de)輸(shu)送管(guan)(guan)網(wang)，化(hua)工(gong)(gong)(gong)管(guan)(guan)道(dao)(dao)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)工(gong)(gong)(gong)程石(shi)油、化(hua)工(gong)(gong)(gong)、集(ji)中(zhong)供(gong)熱(re)熱(re)網(wang)、中(zhong)央空(kong)(kong)調通(tong)風管(guan)(guan)道(dao)(dao)、市政工(gong)(gong)(gong)程等。高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)預(yu)制直(zhi)埋(mai)(mai)(mai)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)是一種保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)性能好，安全可靠(kao)，工(gong)(gong)(gong)程造價低的(de)直(zhi)埋(mai)(mai)(mai)預(yu)制保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)。有(you)效的(de)解決了(le)城鎮(zhen)集(ji)中(zhong)供(gong)熱(re)中(zhong)130區—150區高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)輸(shu)熱(re)用預(yu)制直(zhi)埋(mai)(mai)(mai)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)的(de)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)、滑(hua)動潤滑(hua)和裸露管(guan)(guan)端的(de)防水問題。高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)預(yu)制直(zhi)埋(mai)(mai)(mai)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)不僅(jin)具有(you)傳統地溝(gou)和架空(kong)(kong)敷設管(guan)(guan)道(dao)(dao)難(nan)以比(bi)擬的(de)先進技(ji)術、實用性能，而且還具有(you)顯著的(de)社會效益和經濟效益，也是供(gong)熱(re)節能的(de)有(you)力措施。高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)預(yu)制直(zhi)埋(mai)(mai)(mai)保(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)管(guan)(guan)采用直(zhi)埋(mai)(mai)(mai)供(gong)熱(re)管(guan)(guan)道(dao)(dao)技(ji)術，標志著中(zhong)國供(gong)熱(re)管(guan)(guan)道(dao)(dao)技(ji)術發展已經進入了(le)新(xin)的(de)起點。
保(bao)溫(wen)管是由鋼管、玻(bo)璃鋼外護套(tao)或聚乙烯外護管構成(cheng)，其特征是：還(huan)包(bao)括(kuo)耐高溫(wen)絕熱(re)(re)保(bao)溫(wen)層(ceng)、潤(run)滑層(ceng)、彈性密封件。本實(shi)用(yong)新型有效的(de)解(jie)決了城鎮集中供熱(re)(re)中130℃—150℃高溫(wen)輸熱(re)(re)用(yong)預制直埋保(bao)溫(wen)管的(de)保(bao)溫(wen)、滑動潤(run)滑和(he)裸(luo)露管端的(de)防水(shui)問(wen)題。
部(bu)分組成
（1）工(gong)作鋼(gang)管：根據輸送介質的技術要求分別采用有(you)縫鋼(gang)管、無縫鋼(gang)管、雙(shuang)面埋弧(hu)螺旋焊接鋼(gang)管。
（2）保溫(wen)層:采用硬質聚(ju)氨酯泡沫塑料或氣凝膠(jiao)氈。
（3）保(bao)護殼：采用(yong)高密度聚乙烯(xi)或玻璃鋼管(guan)。
（4）滲漏報(bao)警線：制造高(gao)溫預制直埋保溫管(guan)時(shi)，在靠近鋼(gang)管(guan)的(de)保溫層中，埋設有報(bao)警線一旦管(guan)道某處發生滲漏，通過警報(bao)線的(de)傳導(dao)，便可在專用檢測儀表上報(bao)警并(bing)顯(xian)示出漏水的(de)準確位(wei)置和滲漏程度(du)的(de)大小，以便通知檢修人員迅速處理(li)漏水的(de)管(guan)段，保證熱網安(an)全運行。
