數控母線加工機的安全自動裝置-力建數控

發布日期：2017-11-29 作者：力建數(shu)控(kong) 點擊：

來源：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(ze)任編輯：01顧(gu)問

數控母線(xian)加工(gong)機(ji)繼電(dian)(dian)(dian)(dian)保(bao)(bao)(bao)護(hu)(hu)(hu)和安(an)全自(zi)(zi)(zi)動(dong)(dong)(dong)裝置的(de)(de)(de)基本要(yao)求可(ke)靠(kao)性、安(an)全性、靈敏(min)性、選擇性、速動(dong)(dong)(dong)性。繼電(dian)(dian)(dian)(dian)保(bao)(bao)(bao)護(hu)(hu)(hu)分類主保(bao)(bao)(bao)護(hu)(hu)(hu)和后備(bei)保(bao)(bao)(bao)護(hu)(hu)(hu)。主保(bao)(bao)(bao)護(hu)(hu)(hu)在發(fa)(fa)生故障時，就首先正確可(ke)靠(kao)地(di)動(dong)(dong)(dong)作，在最(zui)短(duan)時間內或(huo)(huo)(huo)(huo)不(bu)帶時限地(di)切(qie)除保(bao)(bao)(bao)護(hu)(hu)(hu)范圍內的(de)(de)(de)故障。數控母線(xian)加工(gong)機(ji)如變(bian)(bian)(bian)壓器的(de)(de)(de)差動(dong)(dong)(dong)保(bao)(bao)(bao)護(hu)(hu)(hu)、輸電(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)(de)(de)高頻保(bao)(bao)(bao)護(hu)(hu)(hu)、距離保(bao)(bao)(bao)護(hu)(hu)(hu)、零序電(dian)(dian)(dian)(dian)流(liu)保(bao)(bao)(bao)護(hu)(hu)(hu)等。后備(bei)保(bao)(bao)(bao)護(hu)(hu)(hu)是當被保(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)氣設備(bei)、輸電(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)(de)(de)主保(bao)(bao)(bao)護(hu)(hu)(hu)或(huo)(huo)(huo)(huo)斷(duan)路(lu)器失(shi)靈時起作用(yong)(yong)(yong)的(de)(de)(de)保(bao)(bao)(bao)護(hu)(hu)(hu)，如變(bian)(bian)(bian)壓器、輸電(dian)(dian)(dian)(dian)線(xian)路(lu)的(de)(de)(de)過流(liu)保(bao)(bao)(bao)護(hu)(hu)(hu)。安(an)全自(zi)(zi)(zi)動(dong)(dong)(dong)裝置如輸電(dian)(dian)(dian)(dian)線(xian)路(lu)自(zi)(zi)(zi)動(dong)(dong)(dong)重合閘(zha)裝置，廠用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)備(bei)用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)源自(zi)(zi)(zi)動(dong)(dong)(dong)投(tou)入裝置，變(bian)(bian)(bian)電(dian)(dian)(dian)(dian)所母線(xian)或(huo)(huo)(huo)(huo)分段母線(xian)備(bei)用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)源自(zi)(zi)(zi)動(dong)(dong)(dong)投(tou)入裝置，自(zi)(zi)(zi)動(dong)(dong)(dong)按頻率減載裝置，電(dian)(dian)(dian)(dian)氣制動(dong)(dong)(dong)和自(zi)(zi)(zi)動(dong)(dong)(dong)切(qie)機(ji)裝置等。母線(xian)機(ji)配(pei)電(dian)(dian)(dian)(dian)系統(tong)發(fa)(fa)生短(duan)路(lu)故障時，會出現電(dian)(dian)(dian)(dian)壓驟降、驟升或(huo)(huo)(huo)(huo)系統(tong)不(bu)對稱的(de)(de)(de)狀態(tai)，而這種狀態(tai)有(you)可(ke)能(neng)導致(zhi)生產(chan)或(huo)(huo)(huo)(huo)其他過程的(de)(de)(de)中斷(duan)，造成巨大的(de)(de)(de)損失(shi)。為了避免此(ci)類事件的(de)(de)(de)發(fa)(fa)生，對電(dian)(dian)(dian)(dian)力企業供電(dian)(dian)(dian)(dian)質量的(de)(de)(de)要(yao)求也持續提高，電(dian)(dian)(dian)(dian)力行業也因(yin)此(ci)在經(jing)歷著重大的(de)(de)(de)變(bian)(bian)(bian)化。

而(er)另一方(fang)面，我們直(zhi)至最近仍在采(cai)用(yong)(yong)的(de)單側電(dian)(dian)源方(fang)式(shi)也因為(wei)有(you)(you)分布式(shi)電(dian)(dian)源不(bu)斷(duan)地(di)接(jie)入(ru)配電(dian)(dian)系統(tong)而(er)發生(sheng)著變化。現代配電(dian)(dian)保(bao)護(hu)(hu)所(suo)采(cai)用(yong)(yong)的(de)都是(shi)綜合性的(de)多功(gong)(gong)能(neng)(neng)裝(zhuang)置，設計用(yong)(yong)于滿足所(suo)有(you)(you)配電(dian)(dian)系統(tong)的(de)需要，在各種(zhong)系統(tong)條件下為(wei)配電(dian)(dian)系統(tong)提供最優(you)的(de)保(bao)護(hu)(hu)功(gong)(gong)能(neng)(neng)。先進(jin)配電(dian)(dian)保(bao)護(hu)(hu)功(gong)(gong)能(neng)(neng)的(de)應用(yong)(yong)可以(yi)大(da)大(da)地(di)縮短故障清除(chu)時(shi)(shi)間。電(dian)(dian)纜(lan)的(de)絕緣(yuan)材(cai)(cai)料(liao)（芯(xin)線(xian)(xian)(xian)絕緣(yuan)和外皮(pi)絕緣(yuan)）既是(shi)絕緣(yuan)材(cai)(cai)料(liao)，又是(shi)隔(ge)熱(re)材(cai)(cai)料(liao)，因此電(dian)(dian)力電(dian)(dian)纜(lan)在橋架內(nei)敷(fu)設時(shi)(shi)，最多允許敷(fu)設2層，其(qi)原因日(ri)考(kao)慮散(san)熱(re)。數(shu)控(kong)母(mu)線(xian)(xian)(xian)加工(gong)機母(mu)線(xian)(xian)(xian)槽過(guo)載能(neng)(neng)力強，取決于它用(yong)(yong)的(de)絕緣(yuan)材(cai)(cai)料(liao)工(gong)作(zuo)溫(wen)(wen)(wen)度高(gao)，母(mu)線(xian)(xian)(xian)加工(gong)機母(mu)線(xian)(xian)(xian)槽用(yong)(yong)的(de)絕緣(yuan)材(cai)(cai)料(liao)過(guo)支(zhi)采(cai)用(yong)(yong)工(gong)作(zuo)溫(wen)(wen)(wen)度為(wei)105℃的(de)材(cai)(cai)料(liao)，現已開(kai)發出工(gong)作(zuo)溫(wen)(wen)(wen)度為(wei)140℃以(yi)上的(de)輻射(she)交聯阻燃纏(chan)繞帶（PER）和輻射(she)交聯聚(ju)烴熱(re)收(shou)縮管。而(er)電(dian)(dian)纜(lan)所(suo)用(yong)(yong)的(de)絕緣(yuan)材(cai)(cai)料(liao)常期(qi)工(gong)作(zuo)溫(wen)(wen)(wen)度一般為(wei)95℃和105℃，因此母(mu)線(xian)(xian)(xian)槽的(de)過(guo)載能(neng)(neng)力遠遠大(da)于電(dian)(dian)纜(lan)。母(mu)線(xian)(xian)(xian)槽幾乎不(bu)必維(wei)護(hu)(hu)，日(ri)常維(wei)護(hu)(hu)通常是(shi)測量外殼和穿芯(xin)螺(luo)(luo)栓的(de)溫(wen)(wen)(wen)升、進(jin)線(xian)(xian)(xian)箱(xiang)的(de)接(jie)頭(tou)溫(wen)(wen)(wen)升等，穿芯(xin)螺(luo)(luo)栓若采(cai)用(yong)(yong)4.8級，則(ze)需要定(ding)期(qi)緊(jin)固，若采(cai)用(yong)(yong)8.8級的(de)高(gao)強螺(luo)(luo)栓則(ze)不(bu)必定(ding)期(qi)堅固。

數控母線加工機的安全自動裝置-力建數控

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