NEWS
①.電伴(ban)熱(re)系統(tong)(tong)安(an)裝前，被伴(ban)熱(re)管(guan)道必須全部施工完(wan)畢，并經(jing)水壓試驗(yan)、氣密試驗(yan)檢(jian)查合格(ge)。 ②.安(an)裝時，應先按照電伴(ban)熱(re)系統(tong)(tong)圖(tu)逐一核對(dui)管(guan)道編號(hao)、管(guan)道規(gui)格(ge)、工藝條件(jian)、電伴(ban)熱(re)參(can)數、規(gui)格(ge)型號(hao)、電氣設(she)備和控制(zhi)設(she)備規(gui)格(ge)型號(hao)等確認(ren)無(wu)誤后才(cai)能安(an)裝。 ③.電伴(ban)熱(re)...
選用(yong)電(dian)伴熱產品，主要依據工藝條件、環境情況、管道(dao)設計(ji)、管道(dao)所在(zai)區域(yu)的(de)爆炸危(wei)險性分(fen)類。一般按下(xia)列步(bu)驟(zou)選型和計(ji)算。1.需伴熱的(de)管道(dao)散(san)熱損(sun)(sun)失(shi)(shi)計(ji)算 按公式(shi)計(ji)算出每1m管道(dao)的(de)散(san)熱損(sun)(sun)失(shi)(shi)（W／m）。 2.產品系列的(de)選擇 ①.確定工作電(dian)壓，一...
1.電(dian)(dian)(dian)伴熱方(fang)法(fa)的(de)分類 ①.感(gan)應加熱法(fa) 感(gan)應加熱法(fa)是在管(guan)道上纏繞(rao)電(dian)(dian)(dian)線或(huo)電(dian)(dian)(dian)纜，當接通(tong)電(dian)(dian)(dian)源后，由(you)于(yu)電(dian)(dian)(dian)磁(ci)感(gan)應效應產生熱量，以補償管(guan)道的(de)散熱損失，維持操作介質的(de)溫(wen)度。電(dian)(dian)(dian)感(gan)應加熱費用太高，限(xian)制了這種(zhong)方(fang)法(fa)的(de)發展。 ②.直接通(tong)電(dian)(dian)(dian)法(fa) ...
電(dian)伴(ban)(ban)(ban)熱(re)(re)（圖13.18）就是用(yong)電(dian)作為外部熱(re)(re)源將(jiang)熱(re)(re)能供給(gei)管道系統(tong)，通常(chang)以自限溫(wen)電(dian)熱(re)(re)帶對(dui)管道或(huo)設備進(jin)(jin)行伴(ban)(ban)(ban)熱(re)(re)保溫(wen)。電(dian)伴(ban)(ban)(ban)熱(re)(re)不(bu)但適用(yong)于蒸汽伴(ban)(ban)(ban)熱(re)(re)的各種(zhong)情況，而且能解決蒸汽伴(ban)(ban)(ban)熱(re)(re)不(bu)易解決的許多問(wen)題(ti)。電(dian)伴(ban)(ban)(ban)熱(re)(re)主要用(yong)于下列情況。 ①.對(dui)于熱(re)(re)敏介(jie)質管道的伴(ban)(ban)(ban)熱(re)(re)，電(dian)伴(ban)(ban)(ban)熱(re)(re)能有效地進(jin)(jin)行溫(wen)...
①.收(shou)集(ji)(ji)站接管數：DN40冷凝水(shui)收(shou)集(ji)(ji)站（或(huo)(huo)(huo)DN50熱水(shui)或(huo)(huo)(huo)導熱油收(shou)集(ji)(ji)站）每(mei)站設(she)DN15（或(huo)(huo)(huo)DN20）接管口不(bu)少(shao)于(yu)6個；DN50冷凝水(shui)收(shou)集(ji)(ji)站（或(huo)(huo)(huo)DN80熱水(shui)或(huo)(huo)(huo)導熱油收(shou)集(ji)(ji)站）每(mei)站設(she)DN15（或(huo)(huo)(huo)DN20）接管口不(bu)少(shao)于(yu)10個。每(mei)個收(shou)集(ji)(ji)站留1～2個備(bei)用口，備(bei)用口應配置閥(fa)門并用...
伴熱(re)(re)管(guan)安裝(zhuang)結構設計如(ru)圖(tu)13.13（a）～（d）所示(shi)，在(zai)水(shui)平管(guan)線時應安裝(zhuang)在(zai)被伴管(guan)下方一(yi)側(ce)或(huo)兩側(ce)。如(ru)圖(tu)13.13（e）～（h）所示(shi)，布(bu)置在(zai)垂直(zhi)管(guan)時應均(jun)勻敷設。圖(tu)13.13（i）、（j）所示(shi)為加(jia)間隔板(ban)或(huo)石棉墊的設計。圖(tu)13.13（k）～（n）為異形隔熱(re)(re)層(ceng)（非圓形隔熱(re)(re)層(ceng)），...
①.伴(ban)(ban)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)線(xian)的口徑：一般伴(ban)(ban)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)道(dao)(dao)的管(guan)(guan)(guan)徑不小(xiao)于DN15。有的工(gong)程熱水、蒸(zheng)汽伴(ban)(ban)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)線(xian)全部采用DN15的管(guan)(guan)(guan)子(zi)(zi)。有的工(gong)程蒸(zheng)汽伴(ban)(ban)熱伴(ban)(ban)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)子(zi)(zi)全部采用DN15的，熱水伴(ban)(ban)熱伴(ban)(ban)中(zhong)(zhong)(zhong)管(guan)(guan)(guan)子(zi)(zi)全部采用DN20的。SH／T3040《石油(you)化工(gong)管(guan)(guan)(guan)道(dao)(dao)伴(ban)(ban)管(guan)(guan)(guan)及(ji)夾套管(guan)(guan)(guan)設計(ji)規范》內規定伴(ban)(ban)管(guan)(guan)(guan)的管(guan)(guan)(guan)徑宜(yi)為10、1...
①.分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)接(jie)管(guan)數(shu)：DN40蒸汽分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)（或(huo)DN50熱水或(huo)導(dao)油分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)）每(mei)站(zhan)(zhan)(zhan)(zhan)設DN15（或(huo)DN20）接(jie)管(guan)口(kou)不(bu)(bu)多(duo)于6個(ge)；DN50蒸汽分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)（或(huo)DN80熱水或(huo)導(dao)油分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)）每(mei)站(zhan)(zhan)(zhan)(zhan)設DN15（或(huo)DN20）接(jie)管(guan)口(kou)不(bu)(bu)多(duo)于10個(ge)。每(mei)個(ge)分(fen)(fen)(fen)配(pei)(pei)站(zhan)(zhan)(zhan)(zhan)留1～2個(ge)備用口(kou)，備用口(kou)應配(pei)(pei)置閥門并用螺紋管(guan)帽...
①.熱水(shui)(shui)分(fen)配站(zhan)臥(wo)(wo)式(shi)(shi)（水(shui)(shui)平(ping)）布置(zhi)(zhi)的(de)形(xing)式(shi)(shi)見(jian)(jian)圖(tu)13.7（a），熱水(shui)(shui)分(fen)配站(zhan)立式(shi)(shi)（垂直）布置(zhi)(zhi)的(de)形(xing)式(shi)(shi)，見(jian)(jian)圖(tu)13.7（b）。②.熱水(shui)(shui)回收站(zhan)臥(wo)(wo)式(shi)(shi)（水(shui)(shui)平(ping)）布置(zhi)(zhi)的(de)形(xing)式(shi)(shi)，見(jian)(jian)圖(tu)13.8（a），熱水(shui)(shui)回收站(zhan)立式(shi)(shi)（垂直）布置(zhi)(zhi)的(de)形(xing)式(shi)(shi)，見(jian)(jian)圖(tu)13.8（b）。③.蒸汽分(fen)配站(zhan)臥(wo)(wo)式(shi)(shi)（水(shui)(shui)平(ping)）布置(zhi)(zhi)的(de)形(xing)式(shi)(shi)，見(jian)(jian)圖(tu)13.9（...
1.熱水(shui)伴(ban)熱系統(tong)（圖13.2） 2.蒸(zheng)汽(qi)伴(ban)熱系統(tong)（圖13.3） ②.蒸(zheng)汽(qi)伴(ban)熱系統(tong)分配(pei)站。 配(pei)管(guan)設計見圖13.4。蒸(zheng)汽(qi)分配(pei)站安(an)裝位置高于(yu)蒸(zheng)汽(qi)總(zong)管(guan)時(shi)，分配(pei)站低點可不(bu)設排放冷凝水(shui)的(de)蒸(zheng)汽(qi)疏水(shui)閥(fa)系統(tong)，水(shui)平安(an)裝的(de)分配(pei)站應無袋形并...
1.熱(re)水(shui)(shui)、蒸汽(qi)(qi)伴熱(re)系統(tong)的組成 熱(re)水(shui)(shui)、蒸汽(qi)(qi)伴熱(re)系統(tong)包括(kuo)；熱(re)源總管(guan)(guan)、熱(re)介質引入(ru)管(guan)(guan)、分配站(zhan)、伴前管(guan)(guan)、伴管(guan)(guan)、伴后管(guan)(guan)、冷凝液（熱(re)水(shui)(shui)回水(shui)(shui)）收集站(zhan)、收集站(zhan)出口回流管(guan)(guan)、回流管(guan)(guan)總管(guan)(guan)。2.熱(re)水(shui)(shui)、蒸汽(qi)(qi)伴熱(re)系統(tong)設計(ji)的一般(ban)要求 ①.伴熱(re)分配站(zhan)及回收站(zhan)的壓(ya)力等級應(ying)與引入(ru)管(guan)(guan)和返回...
①.不(bu)銹鋼(gang)管(guan)(guan)道是否需要伴熱(re)應依照工藝流程圖及管(guan)(guan)道數據表。 ②.在環境溫度下，需從(cong)外部補(bu)償管(guan)(guan)內(nei)介(jie)質熱(re)損(sun)失，以(yi)維持(chi)被輸送介(jie)質溫度的不(bu)銹鋼(gang)管(guan)(guan)道。 ③.在輸送過(guo)程中，由于熱(re)損(sun)失而(er)產生凝液，并可能導致腐(fu)蝕或影(ying)響正(zheng)常操作(zuo)的氣體用不(bu)銹鋼(gang)管(guan)(guan)道。&nbs...
