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(li)建數控點擊：

來(lai)源：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任編(bian)輯：01顧問

數(shu)控(kong)母排加(jia)(jia)工機的油(you)(you)溫(wen)(wen)故(gu)障(zhang)的產生是(shi)由數(shu)控(kong)母排加(jia)(jia)工機油(you)(you)溫(wen)(wen)表指示的是(shi)變(bian)(bian)壓器(qi)頂層油(you)(you)溫(wen)(wen),運(yun)(yun)行中(zhong)(zhong)的油(you)(you)溫(wen)(wen)監視點為85℃,溫(wen)(wen)升(sheng)(sheng)是(shi)指變(bian)(bian)壓器(qi)頂層油(you)(you)溫(wen)(wen)減去環境溫(wen)(wen)度(du),運(yun)(yun)行中(zhong)(zhong)變(bian)(bian)壓器(qi)在外溫(wen)(wen)40℃時(shi),其溫(wen)(wen)升(sheng)(sheng)不(bu)得超過(guo)55℃,運(yun)(yun)行中(zhong)(zhong)以(yi)頂層油(you)(you)溫(wen)(wen)為準,溫(wen)(wen)升(sheng)(sheng)是(shi)參考數(shu)據(ju)。若變(bian)(bian)壓器(qi)在同等條件下(環境溫(wen)(wen)度(du)、負荷、油(you)(you)位(wei)等),油(you)(you)溫(wen)(wen)比平時(shi)高(gao)出(chu)10℃或負荷不(bu)變(bian)(bian)但(dan)溫(wen)(wen)度(du)不(bu)斷(duan)上升(sheng)(sheng),并且冷卻(que)裝置正(zheng)常運(yun)(yun)行,則認為變(bian)(bian)壓器(qi)發生內(nei)部(bu)故(gu)障(zhang)(應注意溫(wen)(wen)度(du)表有無誤差或失靈)。

我(wo)國變壓(ya)(ya)器(qi)(qi)的(de)溫(wen)(wen)升標準,均以(yi)環境溫(wen)(wen)度40℃為(wei)準,故(gu)變壓(ya)(ya)器(qi)(qi)頂層油(you)溫(wen)(wen)一般不得超過40℃+55℃=95℃。頂層油(you)溫(wen)(wen)如(ru)超過95℃,其內部(bu)線(xian)(xian)圈(quan)的(de)溫(wen)(wen)度就要超過線(xian)(xian)圈(quan)絕緣(yuan)物的(de)耐熱(re)(re)強(qiang)度,為(wei)了使(shi)(shi)絕緣(yuan)不致過快老化,所以(yi)規定(ding)變壓(ya)(ya)器(qi)(qi)頂層油(you)溫(wen)(wen)的(de)監視應控制在85℃以(yi)下。導致變壓(ya)(ya)器(qi)(qi)溫(wen)(wen)度異常(chang)(chang)的(de)原因內部(bu)故(gu)障(zhang)(zhang)引起(qi)(qi)溫(wen)(wen)度異常(chang)(chang)變壓(ya)(ya)器(qi)(qi)內部(bu)故(gu)障(zhang)(zhang)如(ru)匝間(jian)短(duan)路(lu)或(huo)層間(jian)短(duan)路(lu),線(xian)(xian)圈(quan)對(dui)圍(wei)屏放電,內部(bu)引線(xian)(xian)接(jie)(jie)頭發熱(re)(re),鐵(tie)芯(xin)多點接(jie)(jie)地使(shi)(shi)渦流增大過熱(re)(re),零序不平衡(heng)電流等漏磁(ci)通與(yu)鐵(tie)件油(you)箱(xiang)形成(cheng)回路(lu)而發熱(re)(re)等因素引起(qi)(qi)變壓(ya)(ya)器(qi)(qi)溫(wen)(wen)度異常(chang)(chang)時(shi),還(huan)將伴隨著瓦斯(si)或(huo)差動(dong)保護(hu)動(dong)作(zuo),故(gu)障(zhang)(zhang)嚴重(zhong)時(shi)還(huan)可能(neng)使(shi)(shi)防爆管或(huo)壓(ya)(ya)力釋放閥(fa)噴(pen)油(you),這時(shi)變壓(ya)(ya)器(qi)(qi)應停用檢查。冷(leng)(leng)卻器(qi)(qi)不正常(chang)(chang)運(yun)(yun)行或(huo)發生故(gu)障(zhang)(zhang)如(ru)潛油(you)泵停運(yun)(yun),風(feng)扇損壞,散(san)熱(re)(re)管道積垢(gou),冷(leng)(leng)卻效率不良,散(san)熱(re)(re)器(qi)(qi)閥(fa)門沒有打開(kai)等原因引起(qi)(qi)溫(wen)(wen)度異常(chang)(chang)。應及時(shi)對(dui)冷(leng)(leng)卻系統進行維(wei)護(hu)和沖洗或(huo)投人(ren)備用冷(leng)(leng)卻器(qi)(qi),否則就要調(diao)整變壓(ya)(ya)器(qi)(qi)的(de)負(fu)荷。溫(wen)(wen)度指示器(qi)(qi)有誤差或(huo)指示失靈(ling),應更換(huan)溫(wen)(wen)度表。

母線折彎機-車間副本.jpg

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