由于防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)在(zai)(zai)运行(xing)中(zhong)存在(zai)(zai)共振，通(tong)常(chang)在(zai)(zai)一定的(de)(de)(de)转速下出现，在(zai)(zai)启动过程中(zhong)转瞬即逝。因此，底(di)座的(de)(de)(de)变形不易检测。老化(hua)不当造成的(de)(de)(de)变形不易察觉。焊接应(ying)力完(wan)全释放需要(yao)很长时间(jian)，所(suo)以在(zai)(zai)加工(gong)(gong)过程中(zhong)很难发现，特(te)别(bie)是在(zai)(zai)工(gong)(gong)期较短的(de)(de)(de)情(qing)况下。因此，防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)厂家(jia)在(zai)(zai)生产电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)时候要(yao)非常(chang)注意。风(feng)(feng)扇(shan)是防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)重要(yao)部(bu)件(jian)之一。除了一些特(te)殊系列的(de)(de)(de)电(dian)(dian)机(ji)(ji)(ji)(ji)产品外，大(da)部(bu)分防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)都应(ying)配备风(feng)(feng)扇(shan)，以改善防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)散热条件(jian)。防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)风(feng)(feng)机(ji)(ji)(ji)(ji)按安装位置可分为(wei)(wei)内风(feng)(feng)机(ji)(ji)(ji)(ji)和外风(feng)(feng)机(ji)(ji)(ji)(ji)。内部(bu)风(feng)(feng)扇(shan)位于防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)内腔中(zhong)，一般(ban)与(yu)电(dian)(dian)机(ji)(ji)(ji)(ji)的(de)(de)(de)电(dian)(dian)机(ji)(ji)(ji)(ji)转子动态平衡。防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)常(chang)常(chang)用在(zai)(zai)具(ju)有危险(xian)的(de)(de)(de)环境当中(zhong)，为(wei)(wei)现代(dai)工(gong)(gong)业化(hua)的(de)(de)(de)发展保(bao)驾护航(hang)。河南工(gong)(gong)业防爆(bao)(bao)(bao)(bao)电(dian)(dian)机(ji)(ji)(ji)(ji)

如果电压(ya)(ya)(ya)过低无法启动防(fang)(fang)(fang)爆(bao)(bao)电机(ji)(ji)，经(jing)检查验证(zheng)后(hou)可(ke)(ke)采(cai)取以下(xia)补(bu)救(jiu)措施：(1)接(jie)错可(ke)(ke)改(gai)星形(xing)接(jie)法(Y)转三角(jiao)形(xing)接(jie)法；(2)尽量缩短电源线(xian)的长度，适(shi)(shi)当增加电源线(xian)的横截面(mian)；(3)根据(ju)实际情况，适(shi)(shi)当提高变压(ya)(ya)(ya)器低压(ya)(ya)(ya)侧的输出电压(ya)(ya)(ya)。接(jie)通(tong)电源后(hou)，防(fang)(fang)(fang)爆(bao)(bao)电机(ji)(ji)只有(you)嗡(weng)嗡(weng)声，但在(zai)防(fang)(fang)(fang)爆(bao)(bao)电机(ji)(ji)不能(neng)正常启动时出现此类故(gu)障。可(ke)(ke)能(neng)的原因有(you)：(1)三相电源未完全接(jie)通(tong)；(2)拖曳(ye)负载因故(gu)障卡(ka)滞(zhi)；(3)定子(zi)和绕(rao)组的引出线(xian)首尾连接(jie)问题，也可(ke)(ke)能(neng)是(shi)绕(rao)组的接(jie)线(xian)出了(le)问题导致(zhi)的。(4)定子(zi)或转子(zi)绕(rao)组的一相开路(lu)；(5)定转子(zi)槽配合不正确（一般(ban)发生在(zai)电机(ji)(ji)换极后(hou)）。银(yin)川防(fang)(fang)(fang)爆(bao)(bao)电机(ji)(ji)价(jia)位(wei)化学工业防(fang)(fang)(fang)爆(bao)(bao)电机(ji)(ji)的启动和停止(zhi)过程平稳，减(jian)少了(le)机(ji)(ji)械(xie)设(she)备的振动和噪音。

中小型电(dian)动(dong)(dong)机一(yi)(yi)般(ban)多(duo)采用(yong)(yong)滚(gun)动(dong)(dong)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)。小型电(dian)动(dong)(dong)机一(yi)(yi)般(ban)前后端均用(yong)(yong)滚(gun)珠(zhu)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)，中型电(dian)动(dong)(dong)机的(de)(de)传(chuan)动(dong)(dong)端采用(yong)(yong)滚(gun)柱轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)，另(ling)一(yi)(yi)端采用(yong)(yong)滚(gun)珠(zhu)抽承(cheng)(cheng)(cheng)(cheng)。在隔爆异步电(dian)动(dong)(dong)机的(de)(de)故障(zhang)中，轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)损坏(huai)也占有(you)一(yi)(yi)定的(de)(de)比(bi)例，所以(yi)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)保养和维(wei)修也很重(zhong)要。轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)发(fa)热的(de)(de)原因和处理：轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)出现发(fa)热故障(zhang)时，轻则使(shi)润(run)滑脂熔化漏出，重(zhong)则将(jiang)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)烧坏(huai)。轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)产(chan)生发(fa)热故障(zhang)的(de)(de)原因如(ru)下(xia)：轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)与(yu)轴(zhou)(zhou)(zhou)摩擦，由于轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)内圆偏(pian)心或装(zhuang)配时被敲出毛刺(ci)，造(zao)成局部与(yu)轴(zhou)(zhou)(zhou)相(xiang)擦使(shi)轴(zhou)(zhou)(zhou)发(fa)热。轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)上的(de)(de)毛刺(ci)可(ke)用(yong)(yong)细(xi)坐(zuo)修整(zheng)，如(ru)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)内圆偏(pian)心，可(ke)再上车床加工修整(zheng)。如(ru)轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)与(yu)轴(zhou)(zhou)(zhou)都(dou)已磨损，可(ke)将(jiang)轴(zhou)(zhou)(zhou)重(zhong)新磨光，轴(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)盖(gai)一(yi)(yi)般(ban)需更换新的(de)(de)。

粉(fen)尘(chen)防(fang)(fang)爆(bao)电(dian)机(ji)(ji)，指其(qi)(qi)外壳(qiao)按规定(ding)(ding)条件(jian)设(she)(she)计制造(zao)，能阻(zu)(zu)止(zhi)粉(fen)尘(chen)进(jin)入电(dian)机(ji)(ji)外壳(qiao)内或(huo)虽(sui)不能完(wan)全阻(zu)(zu)止(zhi)粉(fen)尘(chen)进(jin)入，但(dan)其(qi)(qi)进(jin)入量不妨碍电(dian)机(ji)(ji)安全运行，且内部粉(fen)尘(chen)的堆积不易产生(sheng)点(dian)燃(ran)(ran)危险(xian)，使用(yong)时也不会引起周(zhou)围(wei)爆(bao)裂性(xing)粉(fen)尘(chen)混合物爆(bao)裂的电(dian)机(ji)(ji)。其(qi)(qi)主要特(te)点(dian)是：(1)外壳(qiao)具有较高的密封性(xing)，以减少或(huo)阻(zu)(zu)止(zhi)粉(fen)尘(chen)进(jin)入外壳(qiao)内，即使进(jin)入，其(qi)(qi)进(jin)入量也不至于(yu)形成点(dian)燃(ran)(ran)危险(xian)。(2)控制外壳(qiao)较高表面(mian)允(yun)许温度不超过规定(ding)(ding)的温度组(zu)别。已用(yong)于(yu)国家粮食储备库的机(ji)(ji)械化设(she)(she)备上。粉(fen)尘(chen)防(fang)(fang)爆(bao)电(dian)气设(she)(she)备的国家标准为GBl2476．1—90《爆(bao)裂性(xing)粉(fen)尘(chen)环(huan)境用(yong)防(fang)(fang)爆(bao)电(dian)气设(she)(she)备》。防(fang)(fang)爆(bao)电(dian)机(ji)(ji)还需要具备耐(nai)(nai)高温、耐(nai)(nai)腐蚀、抗震动等特(te)点(dian)，在极端(duan)环(huan)境下也能安全可(ke)靠地运行。

防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)厂家(jia)要(yao)求产品使用(yong)环境温度(du)(du)为(wei)-20～40℃，温度(du)(du)组(zu)别为(wei)T4，较高(gao)表面(mian)温度(du)(du)不超过135℃。如果环境温度(du)(du)超过40°C，会(hui)不会(hui)影响电(dian)(dian)(dian)(dian)机(ji)(ji)？防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)的(de)高(gao)温主要(yao)影响电(dian)(dian)(dian)(dian)机(ji)(ji)材(cai)料的(de)绝(jue)(jue)缘(yuan)。如果温度(du)(du)过高(gao)，电(dian)(dian)(dian)(dian)机(ji)(ji)的(de)绝(jue)(jue)缘(yuan)材(cai)料会(hui)熔化，造成短路，会(hui)烧坏防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)。环境温度(du)(du)高(gao)对防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)有什么影响？电(dian)(dian)(dian)(dian)机(ji)(ji)绝(jue)(jue)缘(yuan)程度(du)(du)是(shi)指(zhi)所用(yong)绝(jue)(jue)缘(yuan)材(cai)料的(de)耐热程度(du)(du)。根据(ju)绝(jue)(jue)缘(yuan)材(cai)料的(de)耐高(gao)温能力，为(wei)其(qi)规定了(le)7个较高(gao)允许温度(du)(du)，分为(wei)Y、A、E、B、F、H、C。7度(du)(du)，较高(gao)工作温度(du)(du)90℃、105℃、120℃、130℃、155℃、180℃及180℃以上(shang)。防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)采用(yong)紧凑的(de)结(jie)构设计(ji)，占(zhan)地面(mian)积小(xiao)，便(bian)于安装和维(wei)护。山(shan)西防爆(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)(ji)多少钱一(yi)台(tai)

化学工(gong)业(ye)防爆(bao)电机具有(you)灵活的安装(zhuang)方式，适(shi)应不同的工(gong)业(ye)设备(bei)布局(ju)要求。河南工(gong)业(ye)防爆(bao)电机

防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)性(xing)能是(shi)其(qi)设(she)计(ji)(ji)的(de)(de)(de)(de)关(guan)键。防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)在正常运(yun)行时(shi)，可能会产生火(huo)花(hua)、电(dian)(dian)(dian)(dian)弧等危险因素(su)。因此(ci)，在设(she)计(ji)(ji)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)时(shi)，必须采(cai)取(qu)一(yi)定的(de)(de)(de)(de)措施来确(que)保其(qi)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)性(xing)能。这些措施包括(kuo)：选(xuan)(xuan)用(yong)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)型式、采(cai)用(yong)隔(ge)爆(bao)(bao)(bao)(bao)结构(gou)、设(she)置过(guo)热保护装置等。通过(guo)这些措施，可以有(you)效(xiao)地降低(di)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)内部产生的(de)(de)(de)(de)火(huo)花(hua)、电(dian)(dian)(dian)(dian)弧等危险因素(su)，从而确(que)保防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)安全运(yun)行。防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)结构(gou)紧(jin)凑(cou)也是(shi)其(qi)设(she)计(ji)(ji)的(de)(de)(de)(de)重要特(te)点之一(yi)。结构(gou)紧(jin)凑(cou)的(de)(de)(de)(de)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)不仅可以节(jie)省空间(jian)，降低(di)设(she)备的(de)(de)(de)(de)占(zhan)地面积(ji)，还(hai)可以减少设(she)备的(de)(de)(de)(de)运(yun)输成本(ben)。此(ci)外，结构(gou)紧(jin)凑(cou)的(de)(de)(de)(de)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)还(hai)可以简化(hua)设(she)备的(de)(de)(de)(de)安装和(he)维护工(gong)作，提高设(she)备的(de)(de)(de)(de)可靠(kao)性(xing)和(he)使用(yong)寿命。为了实现结构(gou)紧(jin)凑(cou)的(de)(de)(de)(de)目(mu)标，防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)的(de)(de)(de)(de)设(she)计(ji)(ji)者需(xu)要在选(xuan)(xuan)材(cai)、制造工(gong)艺(yi)等方(fang)面进行充分的(de)(de)(de)(de)考虑和(he)优化(hua)。河南工(gong)业防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)电(dian)(dian)(dian)(dian)机(ji)

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