產(chǎn)品詳情
直流電機(jī)的絕緣試驗(yàn)是指對(duì)各繞組和磁場(chǎng)可變電阻器的主絕緣進(jìn)行試驗(yàn),其目的是檢查繞組和可變電阻器對(duì)外殼間的絕緣狀況。絕緣試驗(yàn)包括測(cè)量絕緣電阻和交流耐壓試驗(yàn)兩個(gè)項(xiàng)目。
一、各繞組的絕緣試驗(yàn)
1、測(cè)量各繞組的絕緣電阻,應(yīng)使用1000V兆歐表,測(cè)得的絕緣電阻值一般不應(yīng)低于0.5MΩ,對(duì)勵(lì)磁機(jī)還應(yīng)測(cè)量電樞繞組對(duì)軸及金屬綁線(xiàn)的絕緣電阻。
2、磁場(chǎng)繞組對(duì)外殼以及電樞繞組對(duì)軸進(jìn)行交流耐壓試驗(yàn)。其試驗(yàn)電壓值:交接試驗(yàn)標(biāo)準(zhǔn)規(guī)定,為額定電壓的1.5倍再加750V,并不應(yīng)小于1200V。預(yù)防性試驗(yàn)規(guī)程規(guī)定,取電壓為1kV;對(duì)100kW以下不重要的直流電機(jī),電樞繞組對(duì)軸的交流耐壓試驗(yàn)可用2500V兆歐表進(jìn)行測(cè)量。
二、磁場(chǎng)可變電阻器的絕緣電阻測(cè)量
測(cè)量絕緣電阻可 使用2500V兆歐表,測(cè)得的絕緣電阻值不應(yīng)低于0.5MΩ。 新的預(yù)防性試驗(yàn)規(guī)程規(guī)定,不要求單獨(dú)對(duì)磁場(chǎng)可變電阻器進(jìn)行交流耐壓試驗(yàn)。
新聞:龍沙區(qū)繞線(xiàn)機(jī)專(zhuān)用步進(jìn)電機(jī)57BYGH64-1508分銷(xiāo)
行星減速機(jī)漏油的原因
1、油箱內(nèi)壓力升高
在封閉的減速機(jī)里,每一對(duì)齒輪相嚙合發(fā)生摩擦便要發(fā)出熱量,根據(jù)波義耳馬略特定律,隨著運(yùn)轉(zhuǎn)時(shí)間的加長(zhǎng),使減速機(jī)箱內(nèi)溫度逐漸升高,而減速機(jī)箱內(nèi)體積不變,故箱內(nèi)壓力隨之增加,箱體內(nèi)潤(rùn)滑油經(jīng)飛濺,灑在減速機(jī)箱內(nèi)壁。由于油的滲透性比較強(qiáng),在箱內(nèi)壓力下,哪一處密封不嚴(yán),油便從哪里滲出。
2、減速機(jī)結(jié)構(gòu)設(shè)計(jì)不合理引起漏油
如設(shè)計(jì)的減速機(jī)沒(méi)有通風(fēng)罩,減速機(jī)無(wú)法實(shí)現(xiàn)均壓,造成箱內(nèi)壓力越來(lái)越高,出現(xiàn)漏油現(xiàn)象。
3、加油量過(guò)多
減速機(jī)在運(yùn)轉(zhuǎn)過(guò)程中,油池被攪動(dòng)得很厲害,潤(rùn)滑油在機(jī)內(nèi)到處飛濺,如果加油量過(guò)多,使大量潤(rùn)滑油積聚在軸封、結(jié)合面等處,導(dǎo)致泄漏。
4、檢修工藝不當(dāng)
在設(shè)備檢修時(shí),由于結(jié)合面上污物清除不,或密封膠選用不當(dāng)、密封件方向裝反、不及時(shí)更換密封件等也會(huì)引起漏油。
新聞:龍沙區(qū)繞線(xiàn)機(jī)專(zhuān)用步進(jìn)電機(jī)57BYGH64-1508分銷(xiāo)
螺釘:機(jī)器螺釘:因頭型和槽型不同而分成許多品種。頭型有圓柱頭、盤(pán)頭、沉頭和半沉頭幾種,頭部才形為開(kāi)槽(一字材)和十字槽兩種。見(jiàn)GB6GB67—69及GB818—82等。緊定螺釘:緊定螺釘利用其尾端,起防止工件間相互位移及傳遞較少扭矩的作用。見(jiàn)GB7GB73——7GB7GB78等。內(nèi)六角螺釘:內(nèi)六角螺釘適用于安裝空間較小或螺釘頭部需要埋入的場(chǎng)合。,見(jiàn)GBGB6GB6191和GB2672—2674等。
新聞:龍沙區(qū)繞線(xiàn)機(jī)專(zhuān)用步進(jìn)電機(jī)57BYGH64-1508分銷(xiāo)
CH750-3-S-B-G2-RT-H3 CH750-5-S-B-G2-RT-H3 CH750-10-S-B-G2-RT-H3 CH750-15-S-B-G2-RT-H3 CH750-20-S-B-G2-RT-H3 CH750-25-S-B-G2-RT-H3 CH750-30-S-B-G2-RT-H3 CH750-40-S-B-G2-RT-H3 CH750-45-S-B-G2-RT-H3 CH750-50-S-B-G2-RT-H3 CH750-60-S-B-G2-RT-H3 CH750-70-S-B-G2-RT-H3 CH750-80-S-B-G2-RT-H3 CH750-90-S-B-G2-RT-H3 CH750-100-S-B-G2-RT-H3 CH750-120-S-B-G2-RT-H3 CH750-140-S-B-G2-RT-H3 CH750-160-S-B-G2-RT-H3 CH750-180-S-B-G2-RT-H3 CH750-200-S-B-G2-RT-H3 CH1500-3-S-B-G2-RT-H3 CH1500-5-S-B-G2-RT-H3 CH1500-10-S-B-G2-RT-H3 CH1500-15-S-B-G2-RT-H3 CH1500-20-S-B-G2-RT-H3 CH1500-25-S-B-G2-RT-H3 CH1500-30-S-B-G2-RT-H3 CH1500-40-S-B-G2-RT-H3 CH1500-45-S-B-G2-RT-H3 CH1500-50-S-B-G2-RT-H3 CH1500-60-S-B-G2-RT-H3 CH1500-70-S-B-G2-RT-H3 CH1500-80-S-B-G2-RT-H3 CH1500-90-S-B-G2-RT-H3 CH1500-100-S-B-G2-RT-H3 CH1500-120-S-B-G2-RT-H3 CH1500-140-S-B-G2-RT-H3 CH1500-160-S-B-G2-RT-H3 CH1500-180-S-B-G2-RT-H3 CH1500-200-S-B-G2-RT-H3 CH2200-3-S-B-G2-RT-H3 CH2200-5-S-B-G2-RT-H3 CH2200-10-S-B-G2-RT-H3 CH2200-15-S-B-G2-RT-H3 CH2200-20-S-B-G2-RT-H3 CH2200-25-S-B-G2-RT-H3 CH2200-30-S-B-G2-RT-H3 CH2200-40-S-B-G2-RT-H3 CH2200-45-S-B-G2-RT-H3 CH2200-50-S-B-G2-RT-H3 CH2200-60-S-B-G2-RT-H3 CH2200-70-S-B-G2-RT-H3 CH2200-80-S-B-G2-RT-H3 CH2200-90-S-B-G2-RT-H3 CH2200-100-S-B-G2-RT-H3 CH2200-120-S-B-G2-RT-H3 CH2200-140-S-B-G2-RT-H3 CH2200-160-S-B-G2-RT-H3 CH2200-180-S-B-G2-RT-H3 CH2200-200-S-B-G2-RT-H3
也可能是水泵方面原因:選用動(dòng)力不配套,小馬拉大車(chē),電動(dòng)機(jī)長(zhǎng)時(shí)間過(guò)載運(yùn)行,使電動(dòng)機(jī)溫度過(guò)高;啟動(dòng)過(guò)于頻繁、定額為短時(shí)或斷續(xù)工作制的電動(dòng)機(jī)連續(xù)工作。應(yīng)限制啟動(dòng)次數(shù),正確選用熱保護(hù),按電動(dòng)機(jī)上標(biāo)定的定額使用。還可能是電動(dòng)機(jī)本身原因:接法錯(cuò)誤,將形誤接成Y形,使電動(dòng)機(jī)的溫度迅速升高;定子繞組有相間短路、匝間短路或局部接地,輕時(shí)電動(dòng)機(jī)局部過(guò)熱,嚴(yán)重時(shí)絕緣燒壞;鼠籠轉(zhuǎn)子斷條或存在缺陷,電動(dòng)機(jī)運(yùn)行1至2小時(shí),鐵芯溫度迅速上升;通風(fēng)系統(tǒng)發(fā)生故障,應(yīng)檢查風(fēng)扇是否損壞,旋轉(zhuǎn)方向是否正確,通風(fēng)孔道是否堵塞;軸承磨損、轉(zhuǎn)子偏心掃膛使定轉(zhuǎn)子鐵心相擦發(fā)出金屬撞擊聲,鐵芯溫度迅速上升,嚴(yán)重時(shí)電動(dòng)機(jī)冒煙,甚至線(xiàn)圈燒毀。
新聞:龍沙區(qū)繞線(xiàn)機(jī)專(zhuān)用步進(jìn)電機(jī)57BYGH64-1508分銷(xiāo) CV1500-3-S-B-G3-TR-V9 CV1500-5-S-B-G3-TR-V9 CV1500-10-S-B-G3-TR-V9 CV1500-15-S-B-G3-TR-V9 CV1500-20-S-B-G3-TR-V9 CV1500-25-S-B-G3-TR-V9 CV1500-30-S-B-G3-TR-V9 CV1500-40-S-B-G3-TR-V9 CV1500-45-S-B-G3-TR-V9 CV1500-50-S-B-G3-TR-V9 CV1500-60-S-B-G3-TR-V9 CV1500-70-S-B-G3-TR-V9 CV1500-80-S-B-G3-TR-V9 CV1500-90-S-B-G3-TR-V9 CV1500-100-S-B-G3-TR-V9 CV1500-120-S-B-G3-TR-V9 CV1500-140-S-B-G3-TR-V9 CV1500-160-S-B-G3-TR-V9 CV1500-180-S-B-G3-TR-V9 CV1500-200-S-B-G3-TR-V9 CV2200-3-S-B-G3-TR-V9 CV2200-5-S-B-G3-TR-V9 CV2200-10-S-B-G3-TR-V9 CV2200-15-S-B-G3-TR-V9 CV2200-20-S-B-G3-TR-V9 CV2200-25-S-B-G3-TR-V9 CV2200-30-S-B-G3-TR-V9 CV2200-40-S-B-G3-TR-V9 CV2200-45-S-B-G3-TR-V9 CV2200-50-S-B-G3-TR-V9 CV2200-60-S-B-G3-TR-V9 CV2200-70-S-B-G3-TR-V9 CV2200-80-S-B-G3-TR-V9 CV2200-90-S-B-G3-TR-V9 CV2200-100-S-B-G3-TR-V9 CV2200-120-S-B-G3-TR-V9 CV2200-140-S-B-G3-TR-V9 CV2200-160-S-B-G3-TR-V9 CV2200-180-S-B-G3-TR-V9 CV2200-200-S-B-G3-TR-V9 CV3700-3-S-B-G3-TR-V9 CV3700-5-S-B-G3-TR-V9 CV3700-10-S-B-G3-TR-V9 CV3700-15-S-B-G3-TR-V9 CV3700-20-S-B-G3-TR-V9 CV3700-25-S-B-G3-TR-V9 CV3700-30-S-B-G3-TR-V9 CV3700-40-S-B-G3-TR-V9 CV3700-45-S-B-G3-TR-V9 CV3700-50-S-B-G3-TR-V9 CV3700-60-S-B-G3-TR-V9 CV3700-70-S-B-G3-TR-V9 CV3700-80-S-B-G3-TR-V9 CV3700-90-S-B-G3-TR-V9 CV3700-100-S-B-G3-TR-V9 CV3700-120-S-B-G3-TR-V9 CV3700-140-S-B-G3-TR-V9 CV3700-160-S-B-G3-TR-V9 CV3700-180-S-B-G3-TR-V9 CV3700-200-S-B-G3-TR-V9 CV100-3-S-G4-DL-V0 CV100-5-S-G4-DL-V0 CV100-10-S-G4-DL-V0 CV100-15-S-G4-DL-V0 CV100-20-S-G4-DL-V0 CV100-25-S-G4-DL-V0 CV100-30-S-G4-DL-V0 CV100-40-S-G4-DL-V0 CV100-45-S-G4-DL-V0 CV100-50-S-G4-DL-V0 CV100-60-S-G4-DL-V0 CV100-70-S-G4-DL-V0 CV100-80-S-G4-DL-V0 CV100-90-S-G4-DL-V0 CV100-100-S-G4-DL-V0 CV100-120-S-G4-DL-V0 CV100-140-S-G4-DL-V0 CV100-160-S-G4-DL-V0 CV100-180-S-G4-DL-V0 CV100-200-S-G4-DL-V0