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關于電機維修的這些常識你是否都清楚呢?

文章出處:maituwangluo.com  |  發布時間:2019/3/14 15:06:17  |  瀏覽次數:531

    當電(dian)機具(ju)有(you)直線(xian)換向(xiang)(xiang)條(tiao)件(jian)時(shi),其全(quan)部換向(xiang)(xiang)能量從(cong)一(yi)(yi)個(ge)元(yuan)件(jian)傳遞給另一(yi)(yi)個(ge)元(yuan)件(jian),電(dian)刷下不發(fa)生能量的擴(kuo)散(san)(san).當電(dian)機不滿足直線(xian)換向(xiang)(xiang)條(tiao)件(jian)時(shi),有(you)一(yi)(yi)部分(fen)換向(xiang)(xiang)功(gong)率變為電(dian)機的外力矩和電(dian)刷的接觸損耗, 而電(dian)刷下的損耗將以(yi)火花的形式發(fa)散(san)(san).過去,直流電(dian)機設計(ji)(ji)是以(yi)電(dian)抗電(dian)勢 e:作為換向(xiang)(xiang)的評定標準,因為它包括了電(dian)機轉速,線(xian) 負載,磁導(dao)率等有(you)關電(dian)磁及結構參數(shu).由于其推導(dao)及計(ji)(ji)算中的問題,本身有(you)一(yi)(yi)定近(jin)似(si)性(xing),故雖(sui)可解決一(yi)(yi)部分(fen)問題,但存在某些不足。

     如,現有電(dian)(dian)(dian)(dian)(dian)機(ji)中,有些電(dian)(dian)(dian)(dian)(dian)機(ji)電(dian)(dian)(dian)(dian)(dian)抗(kang)電(dian)(dian)(dian)(dian)(dian)勢雖大,但換(huan)向(xiang)卻(que)滿意,反之(zhi),雖其電(dian)(dian)(dian)(dian)(dian)抗(kang)電(dian)(dian)(dian)(dian)(dian)勢在限 定范圍內,但換(huan)向(xiang)性(xing)能(neng)(neng)(neng)可能(neng)(neng)(neng)相當惡劣.現代直流牽引電(dian)(dian)(dian)(dian)(dian)動機(ji)已開始采用(yong)"換(huan)向(xiang)強(qiang)度準則"來(lai)評價電(dian)(dian)(dian)(dian)(dian)機(ji)的換(huan)向(xiang)性(xing)能(neng)(neng)(neng).它是(shi)以(yi)換(huan)向(xiang)能(neng)(neng)(neng)量(liang)(liang)(liang)理(li)論為基礎的.換(huan)向(xiang)能(neng)(neng)(neng)量(liang)(liang)(liang)理(li)論認為.在換(huan)向(xiang)過程(cheng)中,換(huan)向(xiang)元(yuan)(yuan)件(jian)(jian)(jian)中儲存的 電(dian)(dian)(dian)(dian)(dian)磁能(neng)(neng)(neng)量(liang)(liang)(liang)由一個(ge)元(yuan)(yuan)件(jian)(jian)(jian)向(xiang)另一個(ge)元(yuan)(yuan)件(jian)(jian)(jian)傳遞,當實(shi)槽(cao)內較后(hou)一個(ge)元(yuan)(yuan)件(jian)(jian)(jian)換(huan)向(xiang)時(shi),除(chu) 了該元(yuan)(yuan)件(jian)(jian)(jian)本(ben)身的電(dian)(dian)(dian)(dian)(dian)磁能(neng)(neng)(neng)量(liang)(liang)(liang)外,還有實(shi)槽(cao)內其它元(yuan)(yuan)件(jian)(jian)(jian)換(huan)向(xiang)時(shi),傳遞來(lai)的電(dian)(dian)(dian)(dian)(dian)磁能(neng)(neng)(neng)量(liang)(liang)(liang).因此,集中于較后(hou)元(yuan)(yuan)件(jian)(jian)(jian)的電(dian)(dian)(dian)(dian)(dian) 磁能(neng)(neng)(neng)壇(tan)在電(dian)(dian)(dian)(dian)(dian)刷下擴散電(dian)(dian)(dian)(dian)(dian)機(ji),電(dian)(dian)(dian)(dian)(dian)機(ji)如何啟動較終將以(yi)火花的形式釋放出來(lai)。

重慶電機維修

    交(jiao)流(liu)(liu)電(dian)(dian)機(ji)(ji)(ji)維修(xiu):直流(liu)(liu)電(dian)(dian)機(ji)(ji)(ji)維修(xiu)廠家認為交(jiao)流(liu)(liu)電(dian)(dian)機(ji)(ji)(ji)故(gu)(gu)障基本分為兩(liang)類,機(ji)(ji)(ji)械類和(he)電(dian)(dian)氣類,對于機(ji)(ji)(ji)械類的故(gu)(gu)障我們可以(yi)通(tong)過(guo)(guo)(guo)平時的保養或者(zhe)維護來避免(mian)或者(zhe)減少。比如一(yi)旦(dan)交(jiao)流(liu)(liu)電(dian)(dian)機(ji)(ji)(ji)出現(xian)(xian)掃膛、振(zhen)動(dong)過(guo)(guo)(guo)大(da)、發熱等現(xian)(xian)象(xiang),我們可以(yi)通(tong)過(guo)(guo)(guo)檢查軸承(cheng)的部件是否緊(jin)固、潤滑脂是夠足 夠、以(yi)及繞(rao)組線(xian)圈絕緣(yuan)是否完好等來找出問(wen)題的所在,然后根據(ju)相(xiang)應的問(wen)題去進行處理(li)。一(yi)般如果(guo)軸承(cheng)不符(fu)合規定(ding)(ding)尺寸,轉(zhuan)子和(he)定(ding)(ding)子之間(jian)縫隙(xi)過(guo)(guo)(guo)小這些(xie)都(dou)會引(yin)起軸承(cheng)磨損甚至變形,影(ying)響交(jiao)流(liu)(liu)電(dian)(dian)機(ji)(ji)(ji)的正常使用。如果(guo)機(ji)(ji)(ji)座、端蓋、轉(zhuan)子不在同一(yi)水平線(xian)上會出現(xian)(xian)掃堂現(xian)(xian)象(xiang),要及時調整或者(zhe)更(geng)換部件。
    這些機(ji)(ji)械故(gu)障(zhang)不只會出(chu)(chu)現(xian)在三(san)相異步交流(liu)電(dian)機(ji)(ji)中(zhong),在其他種類的(de)交流(liu)電(dian)機(ji)(ji)中(zhong)同樣(yang)有可能(neng)出(chu)(chu)現(xian)。所以我們應該(gai)掌握(wo)基本的(de)交流(liu)電(dian)機(ji)(ji)安全運行(xing)知(zhi)識(shi)和維(wei)修保(bao)養(yang)技巧。直(zhi)流(liu)電(dian)機(ji)(ji)維(wei)修廠家認為在交流(liu)電(dian)機(ji)(ji)出(chu)(chu)現(xian)故(gu)障(zhang)時,可以根據他的(de)故(gu)障(zhang)現(xian)象判斷出(chu)(chu)問(wen)題(ti)(ti)出(chu)(chu)現(xian)的(de)原因,進(jin)而能(neng)夠 快(kuai)速的(de)解決問(wen)題(ti)(ti),避免(mian)造成(cheng)更大的(de)損失。
    以上就(jiu)是直流電機維(wei)修廠家(jia)認為的影響交流電機壽命的因素,希望可以幫助到(dao)大(da)家(jia)。
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