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典型部位的電伴(ban)熱安裝圖(tu)(tu)例(li)見表6-39。某(mou)工程公司的電伴(ban)熱設計(ji)程序(xu) 1.電伴(ban)熱在(zai)管(guan)道(dao)(dao)布(bu)置圖(tu)(tu)上注明的方式 在(zai)進(jin)行電伴(ban)熱系統的設計(ji)時，壓(ya)力管(guan)道(dao)(dao)專業在(zai)管(guan)道(dao)(dao)布(bu)置圖(tu)(tu)上一般用(yong)管(guan)線號末端伴(ban)熱代號ET（按PID圖(tu)(tu)規定）注明的方式表示。有(you)時同時也沿管(guan)線添加虛線表示...
①.電(dian)伴熱(re)(re)系統安(an)(an)裝前(qian)，被伴熱(re)(re)管(guan)道必須全(quan)部(bu)施工(gong)完(wan)畢(bi)，并(bing)經水壓試(shi)驗、氣(qi)(qi)密(mi)試(shi)驗檢查合格(ge)。 ②.安(an)(an)裝時(shi)，應先按(an)照電(dian)伴熱(re)(re)系統圖逐一核對管(guan)道編號、管(guan)道規格(ge)、工(gong)藝條件(jian)、電(dian)伴熱(re)(re)參數及(ji)規格(ge)型號、電(dian)氣(qi)(qi)設備和控(kong)制設備規格(ge)型號等(deng)，確認(ren)無誤后才能安(an)(an)裝。 ③.電(dian)伴...
選用電伴(ban)(ban)熱產(chan)品，主要(yao)依據(ju)工藝條件、環境情況、管(guan)(guan)道設計(ji)(ji)、管(guan)(guan)道所(suo)在區域的爆炸危險性分類。一般按下列步驟選型(xing)和計(ji)(ji)算。1.需伴(ban)(ban)熱的管(guan)(guan)道散(san)熱損(sun)失(shi)計(ji)(ji)算 按公(gong)(gong)式（可在SH／T3040、GB50364等標準(zhun)內(nei)查找(zhao)相(xiang)應的計(ji)(ji)算公(gong)(gong)式）計(ji)(ji)算出每米管(guan)(guan)道的散(san)熱損(sun)失(shi)量（W/m）...
①.感應(ying)加(jia)熱(re)(re)法：在不銹(xiu)鋼管道(dao)(dao)上纏繞(rao)電(dian)線或電(dian)纜(lan)，當接通電(dian)源后，由于電(dian)磁(ci)感應(ying)效應(ying)產生熱(re)(re)量，以補償管道(dao)(dao)的(de)(de)散熱(re)(re)損(sun)失(shi)，維持操作介質的(de)(de)溫度。感應(ying)加(jia)熱(re)(re)的(de)(de)費(fei)用太高，限(xian)制了這種方法的(de)(de)發展。 ②.直接通電(dian)法：在不銹(xiu)鋼管道(dao)(dao)上通以低壓(ya)交流(liu)(liu)電(dian)，利用交流(liu)(liu)電(dian)的(de)(de)集膚效應(ying)產生的(de)(de)熱(re)(re)量，...
電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)就是用電(dian)作(zuo)為外部熱(re)(re)(re)源將熱(re)(re)(re)能(neng)供給管道系統，通常以自限溫電(dian)熱(re)(re)(re)帶對(dui)管道或設備(bei)進行伴(ban)(ban)(ban)熱(re)(re)(re)保溫。電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)不但適用于蒸汽(qi)伴(ban)(ban)(ban)熱(re)(re)(re)的(de)(de)各種情(qing)況(kuang)，而且能(neng)解(jie)(jie)決蒸汽(qi)伴(ban)(ban)(ban)熱(re)(re)(re)不易解(jie)(jie)決的(de)(de)許多問(wen)題。 ①對(dui)于熱(re)(re)(re)敏介質管道的(de)(de)伴(ban)(ban)(ban)熱(re)(re)(re)，電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)能(neng)有效地進行溫度控(kong)制，可以防止管道過熱(re)(re)(re)。 ②....
蒸(zheng)汽分配站(zhan)(zhan)和供氣管的布(bu)(bu)置（圖(tu)6-226） 冷凝(ning)(ning)(ning)水回(hui)收(shou)(shou)時收(shou)(shou)集(ji)站(zhan)(zhan)和冷凝(ning)(ning)(ning)水回(hui)收(shou)(shou)管的布(bu)(bu)置（圖(tu)6-227）注：1.冷凝(ning)(ning)(ning)水收(shou)(shou)集(ji)站(zhan)(zhan)高于冷凝(ning)(ning)(ning)水總管時，低點(dian)可不設排(pai)液口；回(hui)水管應無袋形并坡向冷凝(ning)(ning)(ning)水總管。 2.冷凝(ning)(ning)(ning)水收(shou)(shou)集(ji)站(zhan)(zhan)至(zhi)少有(you)3根...
1.伴(ban)(ban)管管徑(jing)及(ji)(ji)根(gen)數的選用 ①.伴(ban)(ban)管管徑(jing)宜為10、12、DN15、DN20、DN25，伴(ban)(ban)管根(gen)數不宜超過4根(gen)。 ②.在不同環境(jing)(jing)溫度(du)及(ji)(ji)工藝操作條件下，蒸汽伴(ban)(ban)管管徑(jing)及(ji)(ji)根(gen)數從SH／T3040提供的四個表（表1蒸汽伴(ban)(ban)管溫度(du)143℃／183℃、環境(jing)(jing)溫度(du)5℃；表2...
1.管(guan)(guan)(guan)(guan)子(zi)、閥(fa)門和(he)(he)管(guan)(guan)(guan)(guan)件 對(dui)蒸(zheng)汽伴熱(re)(re)(re)和(he)(he)熱(re)(re)(re)水(shui)(shui)(shui)伴熱(re)(re)(re)管(guan)(guan)(guan)(guan)道材料的一般(ban)規定應與采用的蒸(zheng)汽和(he)(he)熱(re)(re)(re)水(shui)(shui)(shui)主(zhu)管(guan)(guan)(guan)(guan)相同，如果項目允(yun)許，伴管(guan)(guan)(guan)(guan)（包括伴熱(re)(re)(re)供(gong)(gong)汽／供(gong)(gong)水(shui)(shui)(shui)和(he)(he)回水(shui)(shui)(shui)）可以用對(dui)焊(han)連接(jie)，蒸(zheng)汽供(gong)(gong)汽站／熱(re)(re)(re)水(shui)(shui)(shui)供(gong)(gong)水(shui)(shui)(shui)站、冷凝(ning)液(ye)站／熱(re)(re)(re)水(shui)(shui)(shui)回水(shui)(shui)(shui)站上的分支宜采用半(ban)管(guan)(guan)(guan)(guan)接(jie)頭或焊(han)接(jie)支管(guan)(guan)(guan)(guan)臺。2.用于蒸(zheng)汽伴熱(re)(re)(re)系統的閥(fa)門&nb...
①.收(shou)集(ji)站(zhan)(zhan)(zhan)接(jie)管數如下(xia)：DN40冷凝水(shui)收(shou)集(ji)站(zhan)(zhan)(zhan)（或(huo)DN50熱(re)水(shui)或(huo)導(dao)熱(re)油收(shou)集(ji)站(zhan)(zhan)(zhan)）每(mei)站(zhan)(zhan)(zhan)設(she)(she)DN15（或(huo)DN20）接(jie)管口不(bu)多于6個(ge)；DN50冷凝水(shui)收(shou)集(ji)站(zhan)(zhan)(zhan)（或(huo)DN80熱(re)水(shui)或(huo)導(dao)熱(re)油收(shou)集(ji)站(zhan)(zhan)(zhan)）每(mei)站(zhan)(zhan)(zhan)設(she)(she)DN15（或(huo)DN20）接(jie)管口不(bu)多于10個(ge)。每(mei)個(ge)收(shou)集(ji)站(zhan)(zhan)(zhan)留(liu)1～2個(ge)備用口，備用口應配置閥(fa)門(men)...
1.伴(ban)(ban)管設計一(yi)般要(yao)(yao)求 ①.蒸汽伴(ban)(ban)熱(re)和熱(re)水伴(ban)(ban)熱(re)伴(ban)(ban)管尺寸通常為(wei)DN15，必要(yao)(yao)時(shi)用DN20。 ②.每根(gen)被伴(ban)(ban)熱(re)管道所需(xu)伴(ban)(ban)管根(gen)數(shu)由(you)工程設計規定，根(gen)據(ju)HG/T20549，一(yi)般要(yao)(yao)求見表(biao)6-31。此(ci)伴(ban)(ban)管根(gen)數(shu)與SH／T3040等規范不同(tong)。 ③.對(dui)于輸送...
①.分配(pei)站(zhan)(zhan)的布置采用(yong)臥式(shi)(shi)（水(shui)平）或(huo)(huo)(huo)(huo)立式(shi)(shi)安裝的形式(shi)(shi)。 ②.分配(pei)站(zhan)(zhan)接管(guan)數如下：DN40蒸(zheng)汽(qi)分配(pei)站(zhan)(zhan)（或(huo)(huo)(huo)(huo)DN50熱(re)(re)水(shui)或(huo)(huo)(huo)(huo)導熱(re)(re)油分配(pei)站(zhan)(zhan)）每(mei)站(zhan)(zhan)設DN15（或(huo)(huo)(huo)(huo)DN20）接管(guan)口不多于6個(ge)；DN50蒸(zheng)汽(qi)分配(pei)站(zhan)(zhan)（或(huo)(huo)(huo)(huo)DN80熱(re)(re)水(shui)或(huo)(huo)(huo)(huo)導熱(re)(re)油分配(pei)站(zhan)(zhan)）每(mei)站(zhan)(zhan)設DN15（或(huo)(huo)(huo)(huo)DN20）...
一、伴(ban)(ban)(ban)(ban)熱設(she)計的(de)規劃 ①.將流程(cheng)圖(tu)(tu)上(shang)有伴(ban)(ban)(ban)(ban)熱要求(qiu)的(de)管(guan)(guan)(guan)線(xian)、儀(yi)表(biao)和(he)設(she)備(bei)列出。 ②.在管(guan)(guan)(guan)道平(ping)面(mian)布置圖(tu)(tu)上(shang)找出所(suo)有要伴(ban)(ban)(ban)(ban)熱的(de)管(guan)(guan)(guan)線(xian)、儀(yi)表(biao)設(she)備(bei)的(de)位(wei)(wei)置。 ③.確(que)定被伴(ban)(ban)(ban)(ban)管(guan)(guan)(guan)線(xian)伴(ban)(ban)(ban)(ban)熱的(de)起止點。 ④.根(gen)據被伴(ban)(ban)(ban)(ban)要求(qiu)、伴(ban)(ban)(ban)(ban)熱起止點數，確(que)定伴(ban)(ban)(ban)(ban)熱站數及其位(wei)(wei)置。&nb...
