數控母排加工機油溫變化及其影響

發布日期：2018-03-05 作者：力建數(shu)控點擊：

來源(yuan)：力建數控母線機、母線加工機、銅排加工機、母排加工機生產廠家責(ze)任(ren)編輯：01顧問(wen)

數控(kong)(kong)母排(pai)加工機的油溫(wen)(wen)(wen)故(gu)障的產(chan)生是(shi)由數控(kong)(kong)母排(pai)加工機油溫(wen)(wen)(wen)表指示(shi)的是(shi)變(bian)壓(ya)器(qi)頂層油溫(wen)(wen)(wen),運(yun)行中的油溫(wen)(wen)(wen)監視(shi)點為85℃,溫(wen)(wen)(wen)升是(shi)指變(bian)壓(ya)器(qi)頂層油溫(wen)(wen)(wen)減去環境(jing)溫(wen)(wen)(wen)度(du)(du),運(yun)行中變(bian)壓(ya)器(qi)在外溫(wen)(wen)(wen)40℃時,其(qi)溫(wen)(wen)(wen)升不(bu)得超過55℃,運(yun)行中以頂層油溫(wen)(wen)(wen)為準,溫(wen)(wen)(wen)升是(shi)參(can)考數據。若(ruo)變(bian)壓(ya)器(qi)在同等條件下(xia)(環境(jing)溫(wen)(wen)(wen)度(du)(du)、負荷、油位等),油溫(wen)(wen)(wen)比平時高出10℃或負荷不(bu)變(bian)但溫(wen)(wen)(wen)度(du)(du)不(bu)斷上升,并且冷卻裝置正常運(yun)行,則認為變(bian)壓(ya)器(qi)發生內部(bu)故(gu)障(應注意溫(wen)(wen)(wen)度(du)(du)表有無誤差(cha)或失靈(ling))。

我(wo)國變(bian)壓(ya)器(qi)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)升標準(zhun),均(jun)以(yi)(yi)(yi)環境溫(wen)(wen)(wen)(wen)(wen)度(du)40℃為準(zhun),故(gu)(gu)變(bian)壓(ya)器(qi)頂層(ceng)油溫(wen)(wen)(wen)(wen)(wen)一般不得超(chao)過(guo)40℃+55℃=95℃。頂層(ceng)油溫(wen)(wen)(wen)(wen)(wen)如超(chao)過(guo)95℃,其(qi)內部(bu)線圈的(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)就要超(chao)過(guo)線圈絕緣物的(de)(de)耐熱(re)強度(du),為了(le)使(shi)絕緣不致(zhi)過(guo)快(kuai)老化,所以(yi)(yi)(yi)規(gui)定變(bian)壓(ya)器(qi)頂層(ceng)油溫(wen)(wen)(wen)(wen)(wen)的(de)(de)監視應控制在(zai)85℃以(yi)(yi)(yi)下。導致(zhi)變(bian)壓(ya)器(qi)溫(wen)(wen)(wen)(wen)(wen)度(du)異(yi)常的(de)(de)原(yuan)因(yin)內部(bu)故(gu)(gu)障引起(qi)溫(wen)(wen)(wen)(wen)(wen)度(du)異(yi)常變(bian)壓(ya)器(qi)內部(bu)故(gu)(gu)障如匝間(jian)短(duan)(duan)路或層(ceng)間(jian)短(duan)(duan)路,線圈對(dui)圍屏放電(dian),內部(bu)引線接(jie)頭發(fa)熱(re),鐵芯多點接(jie)地使(shi)渦流增大過(guo)熱(re),零序不平衡(heng)電(dian)流等漏磁通與鐵件油箱形成回路而發(fa)熱(re)等因(yin)素引起(qi)變(bian)壓(ya)器(qi)溫(wen)(wen)(wen)(wen)(wen)度(du)異(yi)常時,還將伴隨著瓦斯(si)或差(cha)動保(bao)護(hu)動作,故(gu)(gu)障嚴重時還可能使(shi)防爆管或壓(ya)力釋放閥噴油,這時變(bian)壓(ya)器(qi)應停用(yong)檢查。冷(leng)(leng)卻(que)器(qi)不正常運(yun)行或發(fa)生故(gu)(gu)障如潛油泵(beng)停運(yun),風扇損壞,散(san)熱(re)管道(dao)積垢(gou),冷(leng)(leng)卻(que)效率不良,散(san)熱(re)器(qi)閥門(men)沒有(you)打(da)開等原(yuan)因(yin)引起(qi)溫(wen)(wen)(wen)(wen)(wen)度(du)異(yi)常。應及(ji)時對(dui)冷(leng)(leng)卻(que)系(xi)統進行維護(hu)和沖(chong)洗或投人備(bei)用(yong)冷(leng)(leng)卻(que)器(qi),否則就要調整變(bian)壓(ya)器(qi)的(de)(de)負荷。溫(wen)(wen)(wen)(wen)(wen)度(du)指示(shi)器(qi)有(you)誤(wu)差(cha)或指示(shi)失靈,應更換(huan)溫(wen)(wen)(wen)(wen)(wen)度(du)表(biao)。

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