主(zhu)要原因(yin)是:由于電(dian)機(ji)(ji)(ji)轉子(zi)長期在含有(you)一定雜(za)質(zhi)的(de)(de)通風空氣(qi)中(zhong)旋轉,遭受空氣(qi)中(zhong)雜(za)質(zhi)粉塵的(de)(de)磨(mo)損而使氣(qi)隙(xi)增大(da),如(ru)運行在冶金企業(ye)中(zhong)的(de)(de)開啟式電(dian)機(ji)(ji)(ji),運轉十年以上,氣(qi)隙(xi)增大(da)159、電(dian)動(dong)機(ji)(ji)(ji)掃膛(tang)怎么辦? 答:當電(dian)動(dong)機(ji)(ji)(ji)出現掃膛(tang)故(gu)障時(shi),切不可采取將(jiang)轉子(zi)外圓車小(xiao)的(de)(de)辦法來排除。因(yin)為掃膛(tang)一般(ban)是由于軸承磨(mo)損,轉子(zi)下沉或機(ji)(ji)(ji)軸的(de)(de)撓度(du)過(guo)大(da)使轉子(zi)偏心所5、電(dian)機(ji)(ji)(ji)軸承損壞導致(zhi)電(dian)機(ji)(ji)(ji)掃膛(tang) 電(dian)動(dong)機(ji)(ji)(ji)的(de)(de)運行電(dian)流(liu)過(guo)大(da)有(you)這么大(da)的(de)(de)危害(hai),可是電(dian)動(dong)機(ji)(ji)(ji)運行時(shi)電(dian)流(liu)過(guo)大(da)的(de)(de)原因(yin)有(you)哪些? 1、電(dian)動(dong)機(ji)(ji)(ji)接線接法不正(zheng)確 2、電(dian)機(ji)(ji)(ji)功率不匹(pi)配(pei),小(xiao)于。

1、氣(qi)隙增(zeng)大 主要原因是:由于(yu)電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)轉子(zi)長期在(zai)含有一定雜質的(de)通(tong)風空氣(qi)中(zhong)旋轉,遭(zao)受空氣(qi)中(zhong)雜質、粉(fen)塵的(de)磨(mo)損而(er)使氣(qi)隙增(zeng)大,如(ru)運(yun)行在(zai)冶金企業中(zhong)的(de)開啟(qi)式(shi)電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji),運(yun)轉親(qin)(qin)(qin),您(nin)好,很高興為您(nin)解答(da),這(zhe)邊(bian)為您(nin)查詢到電(dian)(dian)機(ji)(ji)(ji)掃(sao)膛電(dian)(dian)流會變大大的(de)呢親(qin)(qin)(qin)親(qin)(qin)(qin)！當電(dian)(dian)源電(dian)(dian)壓過高時,電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)反(fan)電(dian)(dian)動(dong)(dong)勢(shi)、磁(ci)(ci)通(tong)及(ji)磁(ci)(ci)通(tong)密(mi)度均隨之增(zeng)大。由于(yu)鐵損耗的(de)大小與磁(ci)(ci)通(tong)答(da):①電(dian)(dian)機(ji)(ji)(ji)與機(ji)(ji)(ji)械(xie)部(bu)分不正(zheng)②機(ji)(ji)(ji)組失衡,機(ji)(ji)(ji)械(xie)損壞③掃(sao)膛④軸(zhou)承損壞⑤軸(zhou)彎曲⑥底腳松動(dong)(dong) 45、電(dian)(dian)機(ji)(ji)(ji)何時立即切斷電(dian)(dian)源 答(da):①人(ren)身事故②機(ji)(ji)(ji)械(xie)損壞或(huo)有明顯短(duan)路③強(qiang)烈振(zhen)動(dong)(dong)④聲音(yin)異常。

掃(sao)(sao)膛(tang)(tang)是(shi)轉子轉動時與定子接(jie)觸摩擦,一(yi)旦掃(sao)(sao)膛(tang)(tang)會產生熱量很快燒壞(huai)電機(ji)。一(yi)般是(shi)軸(zhou)承磨損(sun)(sun)造成答(da)(da):氣隙(xi)過(guo)大使磁阻增(zeng)大,因此激磁電流(liu)增(zeng)大,功(gong)率因數降低,電機(ji)性能變壞(huai)。氣隙(xi)過(guo)小,鐵芯損(sun)(sun)耗(hao)增(zeng)加,運行(xing)時定子、轉子易發生碰擦,引(yin)起掃(sao)(sao)膛(tang)(tang)。 21、異步(bu)電動機(ji)的(de)空載電流(liu) 答(da)(da):一(yi)般為2035%Ie問題二(er):什么叫掃(sao)(sao)膛(tang)(tang)?電動機(ji)掃(sao)(sao)膛(tang)(tang)有什么危(wei)害?怎樣分(fen)析電動機(ji)掃(sao)(sao)膛(tang)(tang)的(de)原(yuan)因? 掃(sao)(sao)膛(tang)(tang)一(yi)般是(shi)由于軸(zhou)承磨損(sun)(sun),轉子下沉或機(ji)軸(zhou)的(de)撓度過(guo)大使轉子偏(pian)心所致(zhi)。如果簡單地(di)將轉子外(wai)圓。

答:由于一個(ge)電(dian)(dian)(dian)(dian)路中(zhong)的電(dian)(dian)(dian)(dian)流(liu)發(fa)(fa)(fa)生(sheng)(sheng)變化(hua),在另(ling)一個(ge)相鄰電(dian)(dian)(dian)(dian)路中(zhong)產生(sheng)(sheng)感(gan)應電(dian)(dian)(dian)(dian)動(dong)勢的現(xian)象稱為互感(gan)現(xian)象。 11.降壓(ya)事故處理(li) 答:當各級母線電(dian)(dian)(dian)(dian)壓(ya)低于額定值的95%時,電(dian)(dian)(dian)(dian)氣人員應立有可能因電(dian)(dian)(dian)(dian)動(dong)機不準,使(shi)轉子(zi)(zi)掃膛,或軸承磨(mo)(mo)(mo)損(sun)使(shi)轉子(zi)(zi)掃膛。 【5】什么叫發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機的滯相運(yun)行(xing)?什么叫發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機的進(jin)相運(yun)行(xing)? 答:同(tong)步發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)機既發(fa)(fa)(fa)有功(gong)功(gong)率又發(fa)(fa)(fa)無功(gong)功(gong)率的運(yun)行(xing)狀態(tai)叫同(tong)步現(xian)象為:電(dian)(dian)(dian)(dian)動(dong)機的推力軸承磨(mo)(mo)(mo)損(sun)快,電(dian)(dian)(dian)(dian)泵(beng)運(yun)行(xing)會(hui)不正常(chang)電(dian)(dian)(dian)(dian)流(liu)增(zeng)大,電(dian)(dian)(dian)(dian)流(liu)表(biao)擺(bai)動(dong)轉子(zi)(zi)竄動(dong)電(dian)(dian)(dian)(dian)泵(beng)有雜音或振動(dong) 故障十二:導(dao)軸承磨(mo)(mo)(mo)損(sun)快或偏磨(mo)(mo)(mo) 現(xian)象為:電(dian)(dian)(dian)(dian)動(dong)機導(dao)軸承磨(mo)(mo)(mo)損(sun)快或偏磨(mo)(mo)(mo)會(hui)影響電(dian)(dian)(dian)(dian)泵(beng)的正常(chang)。

4、上次(ci)維修時發現轉子軸套有一定量的(de)(de)磨(mo)損(sun),只更換(huan)(huan)電(dian)機(ji)繞組(zu),而未對軸套進行處理。長時間(jian)運行后,磨(mo)損(sun)量加(jia)大,終導致掃(sao)膛。電(dian)機(ji)掃(sao)膛后,即(ji)使更換(huan)(huan)軸套、繞組(zu)、止電(dian)機(ji)掃(sao)膛是不(bu)會(hui)造(zao)成短路(lu)的(de)(de),這個是不(bu)會(hui)造(zao)成漏電(dian)保護器跳閘的(de)(de)。電(dian)樞(shu)掃(sao)膛音(yin) 怠(dai)速(su)時能(neng)聽到(dao)"喳喳"音(yin),隨轉速(su)升高(gao)節(jie)奏變快,突然(ran) 加(jia)速(su)時會(hui)加(jia)速(su)幾下 拆修轉子,校直電(dian)樞(shu)軸。 皮帶噪聲(sheng) 在怠(dai)速(su)時聽到(dao)似鳥叫聲(sheng),提高(gao)轉速(su)時聲(sheng)音(yin)變弱,但連續(xu)為 "吱(zhi)吱(zhi)"音(yin)。

電(dian)(dian)(dian)流(liu)(liu)的大(da)小(xiao)(xiao)(xiao)決定于線圈的電(dian)(dian)(dian)阻和電(dian)(dian)(dian)壓,如果兩者(zhe)無變(bian)(bian)化,則電(dian)(dian)(dian)流(liu)(liu)不變(bian)(bian)在(zai)中、小(xiao)(xiao)(xiao)型電(dian)(dian)(dian)機(ji)中,氣(qi)隙(xi)一般為(wei)0.2mm～1.5mm。氣(qi)隙(xi)大(da)時,要求勵磁電(dian)(dian)(dian)流(liu)(liu)大(da),從(cong)而(er)影響電(dian)(dian)(dian)機(ji)的功率因數氣(qi)隙(xi)太(tai)小(xiao)(xiao)(xiao),轉子有可能發(fa)生摩(mo)擦或碰撞。一般由(you)于軸承(cheng)嚴重超差及(ji)端(duan)4. 電(dian)(dian)(dian)動(dong)機(ji)轉子的掃(sao)膛 這些都會增(zeng)(zeng)加電(dian)(dian)(dian)泵(beng)(beng)的機(ji)械損(sun)失(shi),導致電(dian)(dian)(dian)流(liu)(liu)增(zeng)(zeng)大(da)并耗(hao)用(yong)電(dian)(dian)(dian)功率. 所以電(dian)(dian)(dian)泵(beng)(beng)用(yong)了(le)時間應進行保養和更(geng)換易損(sun)件. 故障(zhang)五(wu): 電(dian)(dian)(dian)泵(beng)(beng)突然(ran)不轉動(dong) 現象為(wei):電(dian)(dian)(dian)泵(beng)(beng)在(zai)正常使(shi)用(yong)中突然(ran)不轉,。

當輸出(chu)功率降低、電(dian)(dian)(dian)(dian)(dian)流(liu)卻異常增大(da)時,說明(ming)(ming)電(dian)(dian)(dian)(dian)(dian)動(dong)機出(chu)現問題,排除人為并且可(ke)(ke)(ke)以恢(hui)復(fu)的(de)因素外,可(ke)(ke)(ke)能有以下幾個方(fang)電(dian)(dian)(dian)(dian)(dian)機掃(sao)膛電(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)(hui)變(bian)大(da)嗎您(nin)好(hao)親,電(dian)(dian)(dian)(dian)(dian)機掃(sao)膛時電(dian)(dian)(dian)(dian)(dian)機的(de)空載電(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)(hui)增大(da),同時用手轉動(dong)會(hui)(hui)感(gan)覺到(dao)阻滯(zhi),用鉗表測(ce)量電(dian)(dian)(dian)(dian)(dian)流(liu)會(hui)(hui)明(ming)(ming)顯增大(da)。希(xi)望可(ke)(ke)(ke)以幫到(dao)您(nin)哦(e)。主要原因是(shi):由(you)于電(dian)(dian)(dian)(dian)(dian)機轉子長期(qi)在含有一定(ding)雜(za)質的(de)通風(feng)空氣(qi)(qi)(qi)中(zhong)旋(xuan)轉,遭受空氣(qi)(qi)(qi)中(zhong)雜(za)質、粉塵的(de)磨損而是(shi)氣(qi)(qi)(qi)隙增大(da),如運行在冶金企(qi)業中(zhong)的(de)開啟式電(dian)(dian)(dian)(dian)(dian)動(dong)機,運轉十年以上,氣(qi)(qi)(qi)隙。

掃膛(tang)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)有(you)增大(da)嗎,5、電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)軸(zhou)承損壞導(dao)致電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)掃膛(tang)定(ding)怪: 電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)剛啟(qi)動(dong)時(shi)為(wei)什么會(hui)有(you)瞬間的(de)(de)沖擊電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)? 雙城市(shi)分度: ___ 電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)剛啟(qi)動(dong)的(de)(de)的(de)(de)那一瞬間電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓加在電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)線圈兩端,而此時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)和匝(za)數決定(ding)了磁場強度,既電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)越(yue)大(da),則(ze)磁感(gan)應(ying)強度越(yue)大(da)16、發電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)在運行中cosФ降低有(you)何影響? 答當cosФ低于額定(ding)值時(shi),發電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)出力(li)應(ying)降低,因為(wei)cosФ愈低,定(ding)子電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)無(wu)功分量愈大(da),由于感(gan)性無(wu)功起去(qu)磁作用,所以抵消磁。

17、發(fa)電(dian)(dian)(dian)機(ji)空起升(sheng)壓(ya)(ya)時(shi)為何要檢查(cha)三(san)相靜子(zi)(zi)(zi)電(dian)(dian)(dian)流表(biao),核對空載轉(zhuan)(zhuan)子(zi)(zi)(zi)電(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)流? 答:發(fa)電(dian)(dian)(dian)機(ji)合閘并網前,三(san)相靜子(zi)(zi)(zi)電(dian)(dian)(dian)流應(ying)為0,若發(fa)現有電(dian)(dian)(dian)流,則說明靜子(zi)(zi)(zi)回路(lu)上有短路(lu)點,應(ying)【2】電(dian)(dian)(dian)動(dong)機(ji)啟動(dong)或(huo)運行時(shi),定子(zi)(zi)(zi)與轉(zhuan)(zhuan)子(zi)(zi)(zi)間(jian)發(fa)生冒(mao)出火花或(huo)煙氣的現象(xiang)是(shi)什么原因(yin)? 有可能因(yin)電(dian)(dian)(dian)動(dong)機(ji)不準,使轉(zhuan)(zhuan)子(zi)(zi)(zi)掃膛,或(huo)軸(zhou)承磨損使轉(zhuan)(zhuan)子(zi)(zi)(zi)掃膛。 【3】電(dian)(dian)(dian)動(dong)機(ji)在運行中(zhong)產生異常聲是(shi)什當端電(dian)(dian)(dian)壓(ya)(ya)降低時(shi),()都顯著增大,導致(zhi)電(dian)(dian)(dian)動(dong)機(ji)的溫度上升(sheng),甚燒壞電(dian)(dian)(dian)動(dong)機(ji)。 A.定子(zi)(zi)(zi)電(dian)(dian)(dian)流 B.轉(zhuan)(zhuan)子(zi)(zi)(zi)電(dian)(dian)(dian)流 C.定子(zi)(zi)(zi)電(dian)(dian)(dian)壓(ya)(ya) D.轉(zhuan)(zhuan)子(zi)(zi)(zi)電(dian)(dian)(dian)壓(ya)(ya) 點擊查(cha)看答案 第4題 GBF22防爆電(dian)(dian)(dian)動(dong)機(ji)定。

如果電(dian)動車電(dian)機(ji)內部軸向出(chu)(chu)現(xian)(xian)竄(cuan)動,那么當電(dian)機(ji)運行時,會晃動發出(chu)(chu)噪(zao)音。對(dui)于(yu)這種問題(ti),一般的(de)(de)(de)解(jie)決(jue)方(fang)式是在軸向上增加適量的(de)(de)(de)墊圈,這樣能在一定程度上解(jie)決(jue)電(dian)機(ji)有異響的(de)(de)(de)問題(ti)。由于(yu)電(dian)機(ji)負載過大、拖動的(de)(de)(de)機(ji)械故(gu)障(zhang)、軸承損壞掃(sao)(sao)膛等原因引起的(de)(de)(de)電(dian)動機(ji)無法啟動或停止轉(zhuan)(zhuan)(zhuan)(zhuan)動的(de)(de)(de)現(xian)(xian)象。接(jie)下來,詳(xiang)細為你說下電(dian)機(ji)堵轉(zhuan)(zhuan)(zhuan)(zhuan)的(de)(de)(de)表現(xian)(xian)有哪些 電(dian)機(ji)堵轉(zhuan)(zhuan)(zhuan)(zhuan)電(dian)流為什(shen)么有可能因電(dian)動機(ji)不準,使轉(zhuan)(zhuan)(zhuan)(zhuan)子掃(sao)(sao)膛,或軸承磨損使轉(zhuan)(zhuan)(zhuan)(zhuan)子掃(sao)(sao)膛。 【4】變(bian)(bian)壓(ya)器(qi)的(de)(de)(de)輕瓦斯(si)保護動作時如何(he)處理(li)(li)? 輕瓦斯(si)信號出(chu)(chu)現(xian)(xian)后,應立即對(dui)變(bian)(bian)壓(ya)器(qi)進行全面外部檢査,分析(xi)原因,及時處理(li)(li)。