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楊浦電機使用的必備基礎知識都有哪些?

發(fa)表時(shi)間:2024-05-16 訪問量(liang):26420

一、檢查

1、認真檢查銘牌數據,確認電動機型號符合使用要求。楊浦汽保設備配件

2、用500V兆歐表測(ce)量電動機繞(rao)組對外(wai)殼(ke)的絕緣(yuan)電阻,絕緣(yuan)電阻 應大(da)于0.5MΩ。

二、安裝

1、電動機—般安裝在(zai)室(shi)內清潔(jie)、干(gan)燥的(de)場所,周圍必須通風良好,環境空氣(qi)更(geng)高(gao)溫(wen)度不(bu)超(chao)過40℃,更(geng)低溫(wen)度不(bu)低于-15℃,并應防(fang)止強(qiang)烈的(de)熱輻射(she)。

2、電(dian)動機(ji)控(kong)制(zhi)電(dian)器應有缺相保護和過(guo)載(zai)熱(re)保護裝(zhuang)置(zhi),YA系列增(zeng)安型(xing)電(dian)動機(ji)須根據銘(ming)牌tE時間及起動電(dian)流比(bi)IA/IN選擇合適的(de)過(guo)載(zai)熱(re)保護裝(zhuang)置(zhi)。

3、按接線(xian)(xian)圖(tu)接電(dian)(dian)源(yuan)線(xian)(xian)接線(xian)(xian)頭連接要緊固,帶引(yin)出電(dian)(dian)纜、電(dian)(dian)線(xian)(xian)的電(dian)(dian)動機,可直接和(he)電(dian)(dian)源(yuan)線(xian)(xian)連接,接頭處要絕(jue)緣密(mi)封(feng)。

4、當電(dian)(dian)源線,相(xiang)序和電(dian)(dian)動(dong)粗接線頭(tou)標志(zhi)對應連接時(shi),從軸(zhou)伸端看(kan)電(dian)(dian)動(dong)機順時(shi)針(zhen)旋轉(zhuan)。需要(yao)改(gai)變轉(zhuan)向時(shi),改(gai)變兩(liang)根電(dian)(dian)源線接線的位置(zhi)即可。

5、YD系列等變級多速(su)(su)(su)異步電(dian)(dian)動(dong)機(ji)是利用換(huan)(huan)(huan)接引出(chu)線(xian)的方法來(lai)控制轉(zhuan)速(su)(su)(su)變化(hua)的,為(wei)保證多速(su)(su)(su)電(dian)(dian)動(dong)機(ji)運行的可靠性,設計(ji)和操(cao)作控制裝置時應注意,在高速(su)(su)(su)切換(huan)(huan)(huan)為(wei)低(di)速(su)(su)(su)時,必須在切斷(duan)電(dian)(dian)源的同(tong)時斷(duan)開2Y接線(xian)的中性點,以免在低(di)速(su)(su)(su)繞(rao)組(zu)接通時引起電(dian)(dian)源短(duan)路.在高速(su)(su)(su)切換(huan)(huan)(huan)為(wei)低(di)速(su)(su)(su)的過程中,必續待電(dian)(dian)動(dong)機(ji)停轉(zhuan)后才能接通低(di)速(su)(su)(su)繞(rao)組(zu)的電(dian)(dian)源,以減少對電(dian)(dian)動(dong)機(ji)及負載的沖擊.轉(zhuan)速(su)(su)(su)切換(huan)(huan)(huan)要注意電(dian)(dian)動(dong)機(ji)的轉(zhuan)向。

6、電(dian)動(dong)(dong)(dong)機(ji)可以(yi)采有(you)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi),齒(chi)輪、皮(pi)帶(dai)(dai)與(yu)負載(zai)機(ji)械聯(lian)(lian)接,4kw以(yi)上的2極電(dian)動(dong)(dong)(dong)機(ji)30kw以(yi)上的4極電(dian)動(dong)(dong)(dong)機(ji)不宜用皮(pi)帶(dai)(dai)傳動(dong)(dong)(dong),雙(shuang)軸(zhou)(zhou)(zhou)伸(shen)電(dian)動(dong)(dong)(dong)的第二(er)軸(zhou)(zhou)(zhou)伸(shen)只能用聯(lian)(lian)軸(zhou)(zhou)(zhou)囂傳動(dong)(dong)(dong)。聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)、皮(pi)帶(dai)(dai)輪軸(zhou)(zhou)(zhou)孔與(yu)電(dian)動(dong)(dong)(dong)機(ji)軸(zhou)(zhou)(zhou)的配合(he)松緊應(ying)(ying)合(he)適,安裝時嚴禁(jin)用重錘敲擊。 采用聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)傳動(dong)(dong)(dong)時,電(dian)動(dong)(dong)(dong)機(ji)軸(zhou)(zhou)(zhou)中(zhong)心線(xian)與(yu)負載(zai)機(ji)械軸(zhou)(zhou)(zhou)中(zhong)心線(xian)應(ying)(ying)重合(he),聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)軸(zhou)(zhou)(zhou)向保留1~3mm間隙。 采用皮(pi)帶(dai)(dai)傳達室動(dong)(dong)(dong)時,電(dian)動(dong)(dong)(dong)機(ji)軸(zhou)(zhou)(zhou)中(zhong)心線(xian)應(ying)(ying)與(yu)負載(zai)機(ji)械軸(zhou)(zhou)(zhou)中(zhong)心線(xian)平行,皮(pi)帶(dai)(dai)中(zhong)心線(xian)與(yu)軸(zhou)(zhou)(zhou)中(zhong)心線(xian)相互垂直。

三、接地

電動機必須可靠接(jie)(jie)地,接(jie)(jie)地方式、接(jie)(jie)地電阻(zu)等(deng)應符合《工(gong)業與民用 電力(li)(li)裝(zhuang)置(zhi)的(de)接(jie)(jie)地設(she)計規范》《工(gong)廠電力(li)(li)設(she)計技術規范》等(deng)電氣安全管(guan)理(li) 的(de)規定,接(jie)(jie)地電阻(zu)小于4Ω。

四、起動

1、合(he)閘后(hou)電動機應立即(ji)起(qi)動起(qi)來,達到正常轉速并平(ping)穩運行,否 則皮立即(ji)切(qie)斷電源,檢查并排除故障。

2、起(qi)動(dong)后注(zhu)意觀察(cha)電動(dong)機傳動(dong)裝(zhuang)置、負載機械、電壓表和電流表, 若有異(yi)常現象應立即停機。

3、電動(dong)機空(kong)載(zai)連(lian)續(xu)起動(dong)一(yi)般不超過(guo)4次,運(yun)行至熱態停機后連(lian)續(xu) 起動(dong)不得超過(guo)2次,否則容易燒壞電動(dong)機。

4、根據電(dian)網容量、負(fu)載大小和電(dian)動機功率等,合理(li)選擇(ze)起動方式, 較大功率電(dian)動機宜采(cai)采(cai)用一三角法或降壓方式起動。

五、運行

1、電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)與額(e)定(ding)電(dian)(dian)(dian)壓(ya)的偏差不(bu)超過±5%,三相電(dian)(dian)(dian)壓(ya)不(bu)平(ping)衡不(bu)超過1.5%。

2、電(dian)(dian)動機(ji)(ji)運行電(dian)(dian)流不得超(chao)過銘牌(pai)上(shang)的額定電(dian)(dian)流,三相電(dian)(dian)流不平衡(heng)量不超(chao)過80%,否(fou)則會造(zao)成(cheng)電(dian)(dian)動機(ji)(ji)發熱甚至燒(shao)毀。

3、用溫(wen)度計測(ce)量電動機(ji)機(ji)殼表面溫(wen)度應不超過80℃,軸承的溫(wen)度應不超過95℃。

4、電(dian)動機應(ying)經常(chang)保持(chi)清潔(jie)、干(gan)燥、通(tong)風良好,進風口(kou)與出(chu)風口(kou)必霜保持(chi)暢通(tong)。5、運行中電(dian)動機出(chu)現(xian)冒煙、劇烈振(zhen)動、異常(chang)聲音、特殊(shu)氣味、轉(zhuan)速明顯下降;負載設備(bei)出(chu)現(xian)故障;發生人身(shen)觸電(dian)時應(ying)立即斷電(dian)停機。

 六、軸承潤滑

1、電動機軸承潤滑(hua)(hua)應(ying)良好,一般運行(xing)3000-5000小(xiao)時后,應(ying)停機保養補充或更換潤滑(hua)(hua)脂,潤滑(hua)(hua)脂牌號為ZL--3鋰基(ji)潤滑(hua)(hua)脂。

2、存放或停用(yong)(yong)時(shi)間(jian)超過兩年的電動機(ji)使用(yong)(yong)前(qian)應對軸(zhou)承的潤(run)滑情況進行檢查,必要時(shi)補充或更換潤(run)滑脂。

3、中心(xin)(xin)高(gao)132及以下機(ji)(ji)(ji)座號(hao)電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)用密(mi)封(feng)軸承(cheng)(cheng)(cheng),中心(xin)(xin)高(gao)160以 上(shang)(shang)機(ji)(ji)(ji)座號(hao)電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)一般用非密(mi)封(feng)軸承(cheng)(cheng)(cheng),電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)使(shi)用過程(cheng)中密(mi)封(feng)軸承(cheng)(cheng)(cheng)不(bu)必 更換潤滑(hua)脂(zhi).非密(mi)封(feng)軸承(cheng)(cheng)(cheng)應定期更換清潔的潤滑(hua)脂(zhi).潤滑(hua)脂(zhi)加注(zhu)要(yao)適(shi) 量,一般填充軸承(cheng)(cheng)(cheng)內(nei)外(wai)圈(quan)之間(jian)空腔的1/3-1/2,有注(zhu)脂(zhi)裝(zhuang)置的電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji),用潤滑(hua)槍加注(zhu)3-4下即可,加注(zhu)前打開軸承(cheng)(cheng)(cheng)蓋底部的排放(fang)孔或 蓋板,電(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)運行20分鐘后(hou)再堵上(shang)(shang)排放(fang)孔或上(shang)(shang)好蓋板,拆裝(zhuang)排放(fang)孔螺 塞或蓋板時應斷電(dian)(dian)停(ting)機(ji)(ji)(ji)

 七、運(yun)輸及貯存

在運輸(shu)過程中電動機應(ying)不受潮,軸伸不磕(ke)碰,零件(jian)不損壞等(deng).貯 存場所應(ying)保持清潔、干(gan)燥、通(tong)風(feng),無腐蝕(shi)性氣體,避免環境溫度的急劇變化等(deng)。

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