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井用潜水泵充油电动机的结构与特点

2021-06-23

井用潜水泵充油电动机(ji)的结构(gou)与特(te)点


井(jing)用(yong)潜水(shui)泵充油(you)电(dian)动(dong)(dong)机(ji)(ji)为充油(you)密(mi)封结(jie)构,内腔(qiang)(qiang)充满变(bian)压(ya)器油(you)或(huo)其他(ta)种类(lei)的(de)绝缘(yuan)润滑油(you)。各止口(kou)配合部位均装(zhuang)(zhuang)有(you)(you)耐油(you)橡胶(jiao)0形(xing)圈或(huo)涂(tu)密(mi)封胶(jiao)密(mi)封。轴(zhou)伸端装(zhuang)(zhuang)有(you)(you)一组(zu)单(dan)端面(mian)机(ji)(ji)械密(mi)封或(huo)双端面(mian)机(ji)(ji)械密(mi)封及甩(shuai)沙环,用(yong)以防止井(jing)水(shui)和水(shui)中(zhong)固体杂质进入电(dian)动(dong)(dong)机(ji)(ji)内腔(qiang)(qiang),同时(shi)(shi)阻(zu)止电(dian)动(dong)(dong)机(ji)(ji)内所(suo)充的(de)绝缘(yuan)润滑油(you)泄漏到机(ji)(ji)外(wai)(wai)。电(dian)动(dong)(dong)机(ji)(ji)的(de)定(ding)(ding)子(zi)10、转子(zi)11和滚动(dong)(dong)轴(zhou)承(cheng)12、20均在(zai)(zai)油(you)中(zhong)工(gong)作(zuo)。电(dian)动(dong)(dong)机(ji)(ji)的(de)定(ding)(ding)子(zi)绕(rao)组(zu)采用(yong)特殊的(de)耐油(you)绝缘(yuan)结(jie)构,以保(bao)证井(jing)用(yong)潜水(shui)泵充油(you)电(dian)动(dong)(dong)机(ji)(ji)能在(zai)(zai)井(jing)下水(shui)中(zhong)恶劣的(de)环境(jing)中(zhong)可(ke)靠地(di)工(gong)作(zuo)。电(dian)动(dong)(dong)机(ji)(ji)下部装(zhuang)(zhuang)有(you)(you)保(bao)压(ya)装(zhuang)(zhuang)置:油(you)压(ya)弹簧(huang)2、油(you)囊(nang)23、内设(she)贫油(you)信号(hao)装(zhuang)(zhuang)置21或(huo)限位开关22。这种保(bao)压(ya)装(zhuang)(zhuang)置的(de)主要(yao)作(zuo)用(yong)是:调节电(dian)动(dong)(dong)机(ji)(ji)内腔(qiang)(qiang)所(suo)充油(you)液(ye)因温度变(bian)化或(huo)压(ya)力变(bian)化所(suo)造成的(de)体积(ji)变(bian)化,并(bing)维(wei)持电(dian)动(dong)(dong)机(ji)(ji)内腔(qiang)(qiang)油(you)压(ya)略大于外(wai)(wai)部水(shui)压(ya)。当电(dian)动(dong)(dong)机(ji)(ji)正常工(gong)作(zuo)时(shi)(shi),只(zhi)有(you)(you)机(ji)(ji)内油(you)液(ye)向外(wai)(wai)微量泄

漏,能(neng)(neng)阻止(zhi)井水侵(qin)入充油(you)式(shi)电(dian)动(dong)(dong)(dong)机(ji)(ji)内部,以免造成定子(zi)绕组绝缘(yuan)性能(neng)(neng)下(xia)降,从而影响充油(you)式(shi)电(dian)动(dong)(dong)(dong)机(ji)(ji)的运行可靠性。当电(dian)动(dong)(dong)(dong)机(ji)(ji)内腔(qiang)所充油(you)液因电(dian)动(dong)(dong)(dong)机(ji)(ji)长期(qi)运行正常(chang)(chang)泄(xie)漏或因机(ji)(ji)械密封故障等原因造成非正常(chang)(chang)泄(xie)漏导(dao)致(zhi)电(dian)动(dong)(dong)(dong)机(ji)(ji)“贫油(you)”时,信号(hao)装置就会向(xiang)控制系统发出报警信号(hao),并能(neng)(neng)断开电(dian)源,避免电(dian)动(dong)(dong)(dong)机(ji)(ji)受(shou)到(dao)进一步的损害(hai)。

充(chong)油(you)(you)式(shi)潜水(shui)电动(dong)机(ji)的(de)(de)(de)(de)(de)结(jie)构比充(chong)水(shui)式(shi)潜水(shui)电动(dong)机(ji)复杂(za),它(ta)的(de)(de)(de)(de)(de)使(shi)(shi)用(yong)可(ke)(ke)靠性(xing)首先取决于轴伸端(duan)所安(an)装(zhuang)的(de)(de)(de)(de)(de)机(ji)械(xie)密(mi)封的(de)(de)(de)(de)(de)性(xing)能和可(ke)(ke)靠性(xing),同(tong)时(shi)取决于定(ding)子绕(rao)组绝(jue)缘结(jie)构的(de)(de)(de)(de)(de)耐油(you)(you)水(shui)特性(xing)。当(dang)(dang)机(ji)械(xie)密(mi)封的(de)(de)(de)(de)(de)泄漏量很小、抗磨(mo)性(xing)较好(hao)时(shi),电动(dong)机(ji)定(ding)子绕(rao)组和轴承的(de)(de)(de)(de)(de)工(gong)作条件得(de)到较好(hao)的(de)(de)(de)(de)(de)保证(zheng),电动(dong)机(ji)的(de)(de)(de)(de)(de)运(yun)行可(ke)(ke)靠性(xing)和使(shi)(shi)用(yong)寿(shou)命相应得(de)到提高(gao)。而当(dang)(dang)定(ding)子绕(rao)组绝(jue)缘结(jie)构具有一(yi)定(ding)的(de)(de)(de)(de)(de)耐水(shui)性(xing)时(shi),即使(shi)(shi)电动(dong)机(ji)内有少量的(de)(de)(de)(de)(de)水(shui)进入,使(shi)(shi)机(ji)内所充(chong)油(you)(you)液(ye)变成油(you)(you)与水(shui)的(de)(de)(de)(de)(de)混合液(ye),绝(jue)缘性(xing)能下降时(shi),定(ding)子绕(rao)组仍能继(ji)续(xu)工(gong)作。


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