由于(yu)防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)在(zai)(zai)(zai)運行中(zhong)存在(zai)(zai)(zai)共振，通(tong)常(chang)在(zai)(zai)(zai)一(yi)定的(de)(de)(de)轉(zhuan)速下出現，在(zai)(zai)(zai)啟動(dong)過(guo)程中(zhong)轉(zhuan)瞬即逝。因此(ci)，底(di)座的(de)(de)(de)變形不(bu)(bu)易(yi)檢測。老化(hua)不(bu)(bu)當造成的(de)(de)(de)變形不(bu)(bu)易(yi)察覺。焊(han)接應(ying)(ying)力(li)完全釋放(fang)需要(yao)(yao)很長時間，所以(yi)在(zai)(zai)(zai)加工(gong)(gong)(gong)過(guo)程中(zhong)很難發現，特別是在(zai)(zai)(zai)工(gong)(gong)(gong)期(qi)較短(duan)的(de)(de)(de)情況下。因此(ci)，防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)廠家在(zai)(zai)(zai)生產電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)時候要(yao)(yao)非常(chang)注意。風(feng)扇是防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)重要(yao)(yao)部件之(zhi)一(yi)。除了一(yi)些特殊系列的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)產品外，大部分防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)都應(ying)(ying)配備風(feng)扇，以(yi)改善防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)散(san)熱條件。防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)風(feng)機(ji)(ji)(ji)按安(an)裝位置可分為內風(feng)機(ji)(ji)(ji)和外風(feng)機(ji)(ji)(ji)。內部風(feng)扇位于(yu)防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)內腔中(zhong)，一(yi)般與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)轉(zhuan)子(zi)動(dong)態平衡。防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)常(chang)常(chang)用在(zai)(zai)(zai)具有危險的(de)(de)(de)環境當中(zhong)，為現代工(gong)(gong)(gong)業化(hua)的(de)(de)(de)發展保(bao)駕護航。河南(nan)工(gong)(gong)(gong)業防爆(bao)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)

如果電(dian)(dian)(dian)(dian)壓過(guo)低無法(fa)啟(qi)(qi)動(dong)防(fang)(fang)爆(bao)電(dian)(dian)(dian)(dian)機(ji)，經檢查驗證后(hou)可(ke)采取以(yi)下(xia)補(bu)救措施：(1)接(jie)(jie)錯可(ke)改星形接(jie)(jie)法(fa)(Y)轉(zhuan)三(san)角形接(jie)(jie)法(fa)；(2)盡量(liang)縮(suo)短電(dian)(dian)(dian)(dian)源線的(de)(de)長度，適當增加電(dian)(dian)(dian)(dian)源線的(de)(de)橫截面(mian)；(3)根據實際情(qing)況，適當提高變(bian)壓器低壓側的(de)(de)輸出(chu)電(dian)(dian)(dian)(dian)壓。接(jie)(jie)通電(dian)(dian)(dian)(dian)源后(hou)，防(fang)(fang)爆(bao)電(dian)(dian)(dian)(dian)機(ji)只有(you)嗡嗡聲，但在(zai)防(fang)(fang)爆(bao)電(dian)(dian)(dian)(dian)機(ji)不(bu)能(neng)正(zheng)常啟(qi)(qi)動(dong)時出(chu)現此類故障(zhang)。可(ke)能(neng)的(de)(de)原(yuan)因有(you)：(1)三(san)相(xiang)電(dian)(dian)(dian)(dian)源未完全接(jie)(jie)通；(2)拖曳負(fu)載因故障(zhang)卡滯；(3)定子(zi)和繞組的(de)(de)引出(chu)線首尾連接(jie)(jie)問(wen)題(ti)，也可(ke)能(neng)是繞組的(de)(de)接(jie)(jie)線出(chu)了(le)問(wen)題(ti)導致的(de)(de)。(4)定子(zi)或轉(zhuan)子(zi)繞組的(de)(de)一(yi)相(xiang)開路；(5)定轉(zhuan)子(zi)槽配(pei)合不(bu)正(zheng)確（一(yi)般(ban)發生(sheng)在(zai)電(dian)(dian)(dian)(dian)機(ji)換極后(hou)）。銀川防(fang)(fang)爆(bao)電(dian)(dian)(dian)(dian)機(ji)價位化學工(gong)業防(fang)(fang)爆(bao)電(dian)(dian)(dian)(dian)機(ji)的(de)(de)啟(qi)(qi)動(dong)和停止過(guo)程平穩，減少了(le)機(ji)械設備的(de)(de)振動(dong)和噪音。

中(zhong)小(xiao)型(xing)電(dian)動(dong)(dong)機(ji)一般多采(cai)用(yong)滾(gun)動(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)。小(xiao)型(xing)電(dian)動(dong)(dong)機(ji)一般前后(hou)端(duan)均用(yong)滾(gun)珠(zhu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)，中(zhong)型(xing)電(dian)動(dong)(dong)機(ji)的(de)(de)傳動(dong)(dong)端(duan)采(cai)用(yong)滾(gun)柱(zhu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)，另一端(duan)采(cai)用(yong)滾(gun)珠(zhu)抽(chou)承(cheng)(cheng)(cheng)(cheng)。在隔(ge)爆異步電(dian)動(dong)(dong)機(ji)的(de)(de)故(gu)障中(zhong)，軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)損(sun)壞(huai)也占(zhan)有一定的(de)(de)比例，所以軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)保養和(he)維修(xiu)也很重(zhong)要。軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)發(fa)熱(re)的(de)(de)原因和(he)處理：軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)出現發(fa)熱(re)故(gu)障時(shi)，輕則(ze)使潤滑脂熔化漏出，重(zhong)則(ze)將(jiang)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)燒壞(huai)。軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)產生發(fa)熱(re)故(gu)障的(de)(de)原因如(ru)下：軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)與軸(zhou)(zhou)摩(mo)擦，由(you)于軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)內圓偏心或裝配時(shi)被敲(qiao)出毛(mao)刺，造成局部與軸(zhou)(zhou)相擦使軸(zhou)(zhou)發(fa)熱(re)。軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)上的(de)(de)毛(mao)刺可(ke)用(yong)細坐修(xiu)整(zheng)，如(ru)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)內圓偏心，可(ke)再上車床(chuang)加工修(xiu)整(zheng)。如(ru)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)與軸(zhou)(zhou)都已磨(mo)損(sun)，可(ke)將(jiang)軸(zhou)(zhou)重(zhong)新(xin)(xin)磨(mo)光，軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)蓋(gai)(gai)一般需更換新(xin)(xin)的(de)(de)。

粉(fen)(fen)塵(chen)(chen)防爆(bao)(bao)電(dian)(dian)機(ji)(ji)，指其(qi)(qi)外(wai)殼(ke)(ke)(ke)按規(gui)定(ding)條件設(she)(she)計制(zhi)造，能(neng)阻止(zhi)粉(fen)(fen)塵(chen)(chen)進入電(dian)(dian)機(ji)(ji)外(wai)殼(ke)(ke)(ke)內(nei)或雖不(bu)能(neng)完(wan)全阻止(zhi)粉(fen)(fen)塵(chen)(chen)進入，但其(qi)(qi)進入量(liang)不(bu)妨礙電(dian)(dian)機(ji)(ji)安全運行，且內(nei)部粉(fen)(fen)塵(chen)(chen)的(de)(de)(de)堆積不(bu)易產生點(dian)燃危險，使用時也(ye)不(bu)會引(yin)起(qi)周(zhou)圍爆(bao)(bao)裂(lie)性粉(fen)(fen)塵(chen)(chen)混合物爆(bao)(bao)裂(lie)的(de)(de)(de)電(dian)(dian)機(ji)(ji)。其(qi)(qi)主要(yao)特點(dian)是：(1)外(wai)殼(ke)(ke)(ke)具(ju)有較高(gao)的(de)(de)(de)密封性，以減少或阻止(zhi)粉(fen)(fen)塵(chen)(chen)進入外(wai)殼(ke)(ke)(ke)內(nei)，即使進入，其(qi)(qi)進入量(liang)也(ye)不(bu)至于形(xing)成點(dian)燃危險。(2)控制(zhi)外(wai)殼(ke)(ke)(ke)較高(gao)表(biao)面(mian)允(yun)許溫(wen)度不(bu)超過規(gui)定(ding)的(de)(de)(de)溫(wen)度組別。已用于國家(jia)糧食儲備(bei)(bei)庫的(de)(de)(de)機(ji)(ji)械(xie)化設(she)(she)備(bei)(bei)上。粉(fen)(fen)塵(chen)(chen)防爆(bao)(bao)電(dian)(dian)氣設(she)(she)備(bei)(bei)的(de)(de)(de)國家(jia)標準(zhun)為GBl2476．1—90《爆(bao)(bao)裂(lie)性粉(fen)(fen)塵(chen)(chen)環境(jing)用防爆(bao)(bao)電(dian)(dian)氣設(she)(she)備(bei)(bei)》。防爆(bao)(bao)電(dian)(dian)機(ji)(ji)還需(xu)要(yao)具(ju)備(bei)(bei)耐(nai)高(gao)溫(wen)、耐(nai)腐蝕、抗震動等(deng)特點(dian)，在(zai)極端環境(jing)下也(ye)能(neng)安全可(ke)靠(kao)地(di)運行。

防(fang)(fang)爆(bao)電(dian)機(ji)廠(chang)家(jia)要求產(chan)品(pin)使用(yong)(yong)環境(jing)溫(wen)(wen)(wen)度(du)(du)(du)為(wei)(wei)(wei)-20～40℃，溫(wen)(wen)(wen)度(du)(du)(du)組別為(wei)(wei)(wei)T4，較(jiao)高(gao)表面(mian)(mian)溫(wen)(wen)(wen)度(du)(du)(du)不超過135℃。如果環境(jing)溫(wen)(wen)(wen)度(du)(du)(du)超過40°C，會不會影(ying)響電(dian)機(ji)？防(fang)(fang)爆(bao)電(dian)機(ji)的(de)高(gao)溫(wen)(wen)(wen)主要影(ying)響電(dian)機(ji)材料(liao)的(de)絕(jue)緣(yuan)。如果溫(wen)(wen)(wen)度(du)(du)(du)過高(gao)，電(dian)機(ji)的(de)絕(jue)緣(yuan)材料(liao)會熔化，造成短路(lu)，會燒壞(huai)防(fang)(fang)爆(bao)電(dian)機(ji)。環境(jing)溫(wen)(wen)(wen)度(du)(du)(du)高(gao)對防(fang)(fang)爆(bao)電(dian)機(ji)有什(shen)么影(ying)響？電(dian)機(ji)絕(jue)緣(yuan)程度(du)(du)(du)是指所(suo)用(yong)(yong)絕(jue)緣(yuan)材料(liao)的(de)耐熱(re)程度(du)(du)(du)。根據絕(jue)緣(yuan)材料(liao)的(de)耐高(gao)溫(wen)(wen)(wen)能力，為(wei)(wei)(wei)其規(gui)定了7個(ge)較(jiao)高(gao)允許溫(wen)(wen)(wen)度(du)(du)(du)，分為(wei)(wei)(wei)Y、A、E、B、F、H、C。7度(du)(du)(du)，較(jiao)高(gao)工作溫(wen)(wen)(wen)度(du)(du)(du)90℃、105℃、120℃、130℃、155℃、180℃及180℃以上。防(fang)(fang)爆(bao)電(dian)機(ji)采用(yong)(yong)緊湊的(de)結(jie)構(gou)設計，占地面(mian)(mian)積小，便于安(an)裝和(he)維(wei)護。山西防(fang)(fang)爆(bao)電(dian)機(ji)多少錢一臺

化學(xue)工(gong)業防爆電機具有靈活的(de)安裝方式，適應不同的(de)工(gong)業設備布局要求。河南工(gong)業防爆電機

防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)的(de)(de)(de)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)性能是其(qi)(qi)設(she)(she)(she)計的(de)(de)(de)關鍵。防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)在正常(chang)運行(xing)時(shi)(shi)，可能會產生火(huo)花、電(dian)(dian)弧(hu)等(deng)危(wei)險因素。因此，在設(she)(she)(she)計防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)時(shi)(shi)，必須采取一定的(de)(de)(de)措施來確保其(qi)(qi)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)性能。這些措施包括(kuo)：選(xuan)用(yong)(yong)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)型式、采用(yong)(yong)隔爆(bao)(bao)(bao)(bao)(bao)結(jie)(jie)構(gou)、設(she)(she)(she)置(zhi)過(guo)熱保護(hu)裝置(zhi)等(deng)。通過(guo)這些措施，可以有效(xiao)地降(jiang)(jiang)低(di)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)內部產生的(de)(de)(de)火(huo)花、電(dian)(dian)弧(hu)等(deng)危(wei)險因素，從而確保防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)的(de)(de)(de)安全運行(xing)。防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)的(de)(de)(de)結(jie)(jie)構(gou)緊(jin)湊(cou)也是其(qi)(qi)設(she)(she)(she)計的(de)(de)(de)重要特點之一。結(jie)(jie)構(gou)緊(jin)湊(cou)的(de)(de)(de)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)不僅可以節省空間，降(jiang)(jiang)低(di)設(she)(she)(she)備(bei)(bei)的(de)(de)(de)占地面積(ji)，還可以減少設(she)(she)(she)備(bei)(bei)的(de)(de)(de)運輸(shu)成本。此外，結(jie)(jie)構(gou)緊(jin)湊(cou)的(de)(de)(de)防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)還可以簡化設(she)(she)(she)備(bei)(bei)的(de)(de)(de)安裝和(he)維(wei)護(hu)工(gong)作，提(ti)高設(she)(she)(she)備(bei)(bei)的(de)(de)(de)可靠性和(he)使(shi)用(yong)(yong)壽(shou)命。為了實現結(jie)(jie)構(gou)緊(jin)湊(cou)的(de)(de)(de)目標，防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)的(de)(de)(de)設(she)(she)(she)計者需要在選(xuan)材、制造工(gong)藝等(deng)方面進(jin)行(xing)充分的(de)(de)(de)考慮(lv)和(he)優化。河南工(gong)業防(fang)(fang)爆(bao)(bao)(bao)(bao)(bao)電(dian)(dian)機(ji)

本(ben)文來自沈(shen)陽喜納(na)多采暖工程(cheng)有限(xian)公司：//zjlong.cn/Article/86a399610.html