立式管(guan)道加熱器工作原理
把一(yi)個(ge)匝數(shu)較(jiao)(jiao)(jiao)(jiao)多的(de)初級(ji)線(xian)圈(quan)和一(yi)個(ge)匝數(shu)較(jiao)(jiao)(jiao)(jiao)少的(de)次(ci)(ci)級(ji)線(xian)圈(quan)裝在同一(yi)個(ge)鐵(tie)芯上。輸入與輸出的(de)電(dian)(dian)壓比(bi)等于線(xian)圈(quan)匝數(shu)之(zhi)比(bi),同時(shi)能(neng)量(liang)保持不變。因此,次(ci)(ci)級(ji)線(xian)圈(quan)在低(di)電(dian)(dian)壓的(de)條件(jian)下產生(sheng)(sheng)大(da)電(dian)(dian)流(liu)(liu)。對(dui)于感應(ying)加熱(re)(re)器來(lai)說(shuo),軸承是(shi)一(yi)個(ge)短(duan)路單(dan)匝的(de)次(ci)(ci)級(ji)線(xian)圈(quan),在較(jiao)(jiao)(jiao)(jiao)低(di)交(jiao)流(liu)(liu)電(dian)(dian)壓的(de)條件(jian)下通過大(da)電(dian)(dian)流(liu)(liu),因而產生(sheng)(sheng)很大(da)的(de)熱(re)(re)量(liang)。加熱(re)(re)器本(ben)(ben)身(shen)及磁(ci)軛(e)則(ze)保持常溫。由于這種加熱(re)(re)方法能(neng)感應(ying)出電(dian)(dian)流(liu)(liu),因此軸承會被磁(ci)化。重要的(de)是(shi)要確保以后給軸承消磁(ci),使(shi)(shi)之(zhi)在操作過程中(zhong)不會吸住(zhu)金(jin)(jin)(jin)屬(shu)磁(ci)屑(xie),FAG感應(ying)加熱(re)(re)器都(dou)有自(zi)動(dong)消磁(ci)功能(neng)。是(shi)利用金(jin)(jin)(jin)屬(shu)在交(jiao)變磁(ci)場中(zhong)產生(sheng)(sheng)渦(wo)流(liu)(liu)而使(shi)(shi)本(ben)(ben)身(shen)發熱(re)(re),通常用在金(jin)(jin)(jin)屬(shu)熱(re)(re)處理等方面(mian)。原理是(shi)較(jiao)(jiao)(jiao)(jiao)厚(hou)的(de)金(jin)(jin)(jin)屬(shu)處于交(jiao)變磁(ci)場中(zhong)時(shi),會由于電(dian)(dian)磁(ci)感應(ying)現(xian)象而產生(sheng)(sheng)電(dian)(dian)流(liu)(liu)。而較(jiao)(jiao)(jiao)(jiao)厚(hou)的(de)金(jin)(jin)(jin)屬(shu)其產生(sheng)(sheng)電(dian)(dian)流(liu)(liu)后,電(dian)(dian)流(liu)(liu)會在金(jin)(jin)(jin)屬(shu)內部(bu)形(xing)成螺(luo)旋形(xing)的(de)流(liu)(liu)動(dong)路線(xian),這樣由于電(dian)(dian)流(liu)(liu)流(liu)(liu)動(dong)而產生(sheng)(sheng)的(de)熱(re)(re)量(liang)就都(dou)被金(jin)(jin)(jin)屬(shu)本(ben)(ben)身(shen)吸收(shou)了,會導致(zhi)金(jin)(jin)(jin)屬(shu)很快升溫。