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典型部(bu)位的電(dian)(dian)伴(ban)熱(re)(re)安裝(zhuang)圖(tu)例見表(biao)6-39。某工程公(gong)司的電(dian)(dian)伴(ban)熱(re)(re)設計程序(xu) 1.電(dian)(dian)伴(ban)熱(re)(re)在管道布置(zhi)圖(tu)上(shang)注(zhu)(zhu)明(ming)的方式 在進行電(dian)(dian)伴(ban)熱(re)(re)系統的設計時(shi)，壓(ya)力(li)管道專業在管道布置(zhi)圖(tu)上(shang)一般用管線號末端(duan)伴(ban)熱(re)(re)代號ET（按PID圖(tu)規(gui)定）注(zhu)(zhu)明(ming)的方式表(biao)示。有(you)時(shi)同(tong)時(shi)也沿管線添(tian)加虛線表(biao)示...
①.電(dian)伴(ban)熱系(xi)統(tong)安(an)裝(zhuang)前，被伴(ban)熱管(guan)道必須全部施(shi)工(gong)完畢，并(bing)經水壓試(shi)(shi)驗、氣(qi)密試(shi)(shi)驗檢查合格(ge)。 ②.安(an)裝(zhuang)時(shi)，應先(xian)按照電(dian)伴(ban)熱系(xi)統(tong)圖(tu)逐一核(he)對管(guan)道編(bian)號、管(guan)道規格(ge)、工(gong)藝條(tiao)件、電(dian)伴(ban)熱參數及規格(ge)型(xing)號、電(dian)氣(qi)設(she)備(bei)和控制設(she)備(bei)規格(ge)型(xing)號等，確認無誤后才能(neng)安(an)裝(zhuang)。 ③.電(dian)伴(ban)...
選用(yong)電伴熱(re)(re)產品，主要依(yi)據工(gong)藝(yi)條件(jian)、環(huan)境情況、管道(dao)設(she)計(ji)、管道(dao)所在區(qu)域的(de)爆炸危險性(xing)分類。一般按下列步驟選型和計(ji)算(suan)(suan)。1.需(xu)伴熱(re)(re)的(de)管道(dao)散(san)熱(re)(re)損失計(ji)算(suan)(suan) 按公式(shi)（可在SH／T3040、GB50364等標準內查找相應的(de)計(ji)算(suan)(suan)公式(shi)）計(ji)算(suan)(suan)出每米管道(dao)的(de)散(san)熱(re)(re)損失量（W/m）...
①.感(gan)應(ying)(ying)加熱法(fa)：在(zai)不(bu)銹鋼(gang)管(guan)(guan)道(dao)(dao)(dao)上纏繞電(dian)(dian)線(xian)或電(dian)(dian)纜，當接(jie)通(tong)電(dian)(dian)源后，由(you)于電(dian)(dian)磁感(gan)應(ying)(ying)效(xiao)(xiao)應(ying)(ying)產(chan)生熱量，以(yi)補償管(guan)(guan)道(dao)(dao)(dao)的(de)(de)散(san)熱損失(shi)，維持操作介(jie)質(zhi)的(de)(de)溫度。感(gan)應(ying)(ying)加熱的(de)(de)費用(yong)太高，限(xian)制了這種方(fang)法(fa)的(de)(de)發展。 ②.直接(jie)通(tong)電(dian)(dian)法(fa)：在(zai)不(bu)銹鋼(gang)管(guan)(guan)道(dao)(dao)(dao)上通(tong)以(yi)低壓(ya)交(jiao)(jiao)流電(dian)(dian)，利用(yong)交(jiao)(jiao)流電(dian)(dian)的(de)(de)集(ji)膚效(xiao)(xiao)應(ying)(ying)產(chan)生的(de)(de)熱量，...
電(dian)伴(ban)熱(re)(re)就是用(yong)電(dian)作為外部熱(re)(re)源將熱(re)(re)能(neng)(neng)供(gong)給(gei)管(guan)(guan)道系統，通常以自(zi)限(xian)溫(wen)電(dian)熱(re)(re)帶對(dui)管(guan)(guan)道或(huo)設備進行伴(ban)熱(re)(re)保溫(wen)。電(dian)伴(ban)熱(re)(re)不但適用(yong)于蒸汽伴(ban)熱(re)(re)的各種情況(kuang)，而且能(neng)(neng)解(jie)決蒸汽伴(ban)熱(re)(re)不易解(jie)決的許多問題。 ①對(dui)于熱(re)(re)敏介質(zhi)管(guan)(guan)道的伴(ban)熱(re)(re)，電(dian)伴(ban)熱(re)(re)能(neng)(neng)有效(xiao)地進行溫(wen)度控制(zhi)，可以防(fang)止管(guan)(guan)道過熱(re)(re)。 ②....
蒸汽分配站(zhan)(zhan)和供(gong)氣(qi)管(guan)(guan)的布(bu)置(zhi)（圖(tu)6-226） 冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)回(hui)收(shou)時收(shou)集(ji)站(zhan)(zhan)和冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)回(hui)收(shou)管(guan)(guan)的布(bu)置(zhi)（圖(tu)6-227）注：1.冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)收(shou)集(ji)站(zhan)(zhan)高于冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)總管(guan)(guan)時，低點(dian)可不設排液口；回(hui)水(shui)(shui)(shui)(shui)管(guan)(guan)應無袋形(xing)并坡向(xiang)冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)總管(guan)(guan)。 2.冷(leng)(leng)凝(ning)(ning)(ning)水(shui)(shui)(shui)(shui)收(shou)集(ji)站(zhan)(zhan)至少有(you)3根...
1.伴(ban)(ban)(ban)管(guan)(guan)管(guan)(guan)徑(jing)及根數(shu)的選用 ①.伴(ban)(ban)(ban)管(guan)(guan)管(guan)(guan)徑(jing)宜為10、12、DN15、DN20、DN25，伴(ban)(ban)(ban)管(guan)(guan)根數(shu)不(bu)宜超過4根。 ②.在不(bu)同環境溫(wen)度及工藝操作(zuo)條件下，蒸(zheng)汽(qi)(qi)伴(ban)(ban)(ban)管(guan)(guan)管(guan)(guan)徑(jing)及根數(shu)從SH／T3040提(ti)供(gong)的四(si)個表（表1蒸(zheng)汽(qi)(qi)伴(ban)(ban)(ban)管(guan)(guan)溫(wen)度143℃／183℃、環境溫(wen)度5℃；表2...
1.管子、閥門和(he)管件(jian) 對蒸(zheng)(zheng)汽(qi)伴熱和(he)熱水(shui)伴熱管道材(cai)料的(de)一(yi)般(ban)規定應與采用(yong)的(de)蒸(zheng)(zheng)汽(qi)和(he)熱水(shui)主(zhu)管相同，如(ru)果(guo)項目允許，伴管（包括伴熱供(gong)汽(qi)／供(gong)水(shui)和(he)回水(shui)）可以用(yong)對焊連接(jie)，蒸(zheng)(zheng)汽(qi)供(gong)汽(qi)站(zhan)(zhan)／熱水(shui)供(gong)水(shui)站(zhan)(zhan)、冷凝(ning)液站(zhan)(zhan)／熱水(shui)回水(shui)站(zhan)(zhan)上的(de)分支宜采用(yong)半管接(jie)頭或焊接(jie)支管臺。2.用(yong)于蒸(zheng)(zheng)汽(qi)伴熱系統的(de)閥門&nb...
①.收(shou)(shou)集(ji)站(zhan)(zhan)接管數如下：DN40冷凝(ning)水收(shou)(shou)集(ji)站(zhan)(zhan)（或(huo)DN50熱(re)水或(huo)導熱(re)油收(shou)(shou)集(ji)站(zhan)(zhan)）每站(zhan)(zhan)設DN15（或(huo)DN20）接管口不(bu)多(duo)于(yu)6個(ge)；DN50冷凝(ning)水收(shou)(shou)集(ji)站(zhan)(zhan)（或(huo)DN80熱(re)水或(huo)導熱(re)油收(shou)(shou)集(ji)站(zhan)(zhan)）每站(zhan)(zhan)設DN15（或(huo)DN20）接管口不(bu)多(duo)于(yu)10個(ge)。每個(ge)收(shou)(shou)集(ji)站(zhan)(zhan)留1～2個(ge)備(bei)用口，備(bei)用口應配置閥門...
1.伴(ban)管(guan)設計一(yi)般(ban)要(yao)求(qiu) ①.蒸汽伴(ban)熱(re)和熱(re)水伴(ban)熱(re)伴(ban)管(guan)尺(chi)寸通常為DN15，必要(yao)時用DN20。 ②.每根(gen)被(bei)伴(ban)熱(re)管(guan)道所需伴(ban)管(guan)根(gen)數由工程設計規定，根(gen)據HG/T20549，一(yi)般(ban)要(yao)求(qiu)見表6-31。此伴(ban)管(guan)根(gen)數與SH／T3040等規范不同。 ③.對(dui)于輸送(song)...
①.分(fen)配(pei)站(zhan)的布置(zhi)采用臥式(shi)(shi)（水(shui)平）或(huo)立(li)式(shi)(shi)安裝的形(xing)式(shi)(shi)。 ②.分(fen)配(pei)站(zhan)接管數(shu)如(ru)下：DN40蒸(zheng)汽(qi)分(fen)配(pei)站(zhan)（或(huo)DN50熱水(shui)或(huo)導熱油分(fen)配(pei)站(zhan)）每站(zhan)設(she)DN15（或(huo)DN20）接管口不(bu)多(duo)于6個(ge)；DN50蒸(zheng)汽(qi)分(fen)配(pei)站(zhan)（或(huo)DN80熱水(shui)或(huo)導熱油分(fen)配(pei)站(zhan)）每站(zhan)設(she)DN15（或(huo)DN20）...
一、伴(ban)(ban)(ban)(ban)熱(re)設(she)計(ji)的規劃 ①.將流程圖(tu)上(shang)有(you)伴(ban)(ban)(ban)(ban)熱(re)要求(qiu)的管線、儀表和設(she)備(bei)列出。 ②.在管道平(ping)面(mian)布(bu)置(zhi)圖(tu)上(shang)找出所有(you)要伴(ban)(ban)(ban)(ban)熱(re)的管線、儀表設(she)備(bei)的位置(zhi)。 ③.確(que)定(ding)被(bei)伴(ban)(ban)(ban)(ban)管線伴(ban)(ban)(ban)(ban)熱(re)的起止點。 ④.根據(ju)被(bei)伴(ban)(ban)(ban)(ban)要求(qiu)、伴(ban)(ban)(ban)(ban)熱(re)起止點數(shu)，確(que)定(ding)伴(ban)(ban)(ban)(ban)熱(re)站數(shu)及其位置(zhi)。&nb...
