管(guan)(guan)道(dao)電(dian)伴(ban)熱(re)、供(gong)水管(guan)(guan)道(dao)電(dian)伴(ban)熱(re)、防爆(bao)電(dian)熱(re)帶管(guan)(guan)道(dao)電(dian)伴(ban)熱(re)系統、輸油管(guan)(guan)道(dao)電(dian)伴(ban)熱(re)系統、具有防腐蝕(shi)、耐油、防霉菌生長、防潮、阻燃和(he)長壽命。
    電(dian)伴(ban)熱(re)(re)系(xi)(xi)統(tong)由電(dian)源(yuan)開(kai)關柜、電(dian)源(yuan)接線(xian)盒(he)、防爆溫(wen)度(du)控制器、尾(wei)端盒(he)及安裝附件(jian)等組成，通過電(dian)源(yuan)電(dian)纜和(he)電(dian)熱(re)(re)帶的連接形成電(dian)源(yuan)回路系(xi)(xi)統(tong)。電(dian)伴(ban)熱(re)(re)系(xi)(xi)統(tong)電(dian)熱(re)(re)帶熱(re)(re)量分布均勻，可以通過溫(wen)度(du)控制系(xi)(xi)統(tong)嚴格跟蹤(zong)溫(wen)度(du)，自動停電(dian)、送電(dian)來保(bao)證管(guan)道(dao)和(he)設(she)備溫(wen)度(du)穩定。設(she)備、工藝管(guan)道(dao)采(cai)用電(dian)伴(ban)熱(re)(re)與蒸(zheng)汽加熱(re)(re)相比，有明顯的優勢。但如果設(she)計、安裝不當(dang)，容易產生局部過熱(re)(re)使(shi)油品(pin)結焦。
某廠(chang)改質瀝青管道(dao)采用電伴熱方式進行加熱保溫(wen)(wen)(wen)，生產過(guo)程(cheng)中由(you)于測溫(wen)(wen)(wen)元件(jian)未能反(fan)應管道(dao)實際溫(wen)(wen)(wen)度，測量(liang)溫(wen)(wen)(wen)度低(di)于管道(dao)實際溫(wen)(wen)(wen)度，溫(wen)(wen)(wen)度控制系統(tong)在測量(liang)溫(wen)(wen)(wen)度低(di)于設定(ding)溫(wen)(wen)(wen)度的情況下，電熱帶溫(wen)(wen)(wen)度不(bu)斷升高。結(jie)果管道(dao)產生局部過(guo)熱現象，瀝青結(jie)焦堵塞管道(dao)。
    防范措(cuo)施：采用電伴(ban)熱(re)(re)(re)(re)方(fang)式對設(she)備、管道加(jia)熱(re)(re)(re)(re)保(bao)溫(wen)(wen)(wen)(wen)時，測溫(wen)(wen)(wen)(wen)元(yuan)件安裝很(hen)關鍵，測溫(wen)(wen)(wen)(wen)元(yuan)件與電熱(re)(re)(re)(re)帶距(ju)離太近，測量(liang)(liang)溫(wen)(wen)(wen)(wen)度(du)高(gao)于(yu)(yu)管道實際溫(wen)(wen)(wen)(wen)度(du)，溫(wen)(wen)(wen)(wen)度(du)控(kong)制系(xi)(xi)統將(jiang)停止加(jia)熱(re)(re)(re)(re)，系(xi)(xi)統溫(wen)(wen)(wen)(wen)度(du)升不上去。如果某種原因使測量(liang)(liang)溫(wen)(wen)(wen)(wen)度(du)低(di)于(yu)(yu)管道實際溫(wen)(wen)(wen)(wen)度(du)，溫(wen)(wen)(wen)(wen)度(du)控(kong)制系(xi)(xi)統在測量(liang)(liang)溫(wen)(wen)(wen)(wen)度(du)低(di)于(yu)(yu)設(she)定(ding)值的情況下(xia)，會繼續加(jia)熱(re)(re)(re)(re)升溫(wen)(wen)(wen)(wen)，出現(xian)管道設(she)備溫(wen)(wen)(wen)(wen)度(du)高(gao)于(yu)(yu)工藝設(she)定(ding)溫(wen)(wen)(wen)(wen)度(du)的現(xian)象。