大型潜水轴流泵机械密封安装调试的探讨

机械密封 田磊磊 江苏省江都水利工程管理处

  机械密封的安装与调试直接影响到水泵的安装质量与运行质量。笔者以潜水泵安装检修的实践经验,通过严格控制机械密封静环端面与轴垂直度的方法来提高泵轴封气密性试验的合格率,从而保障电机绝缘及油腔密封的可靠,省工省时,方便快捷,对相关泵型的检修具有一定的参考价值和实践意义。

一、引言

  JIXIEMIFENGYEJIAODUANMIANMIFENG。TASHIKAODANHUANGHEMIFENGJIEZHIDEYALIZAISUIZHOUXUANZHUANDEDONGHUANHEXIANGDUIJINGZHIDEJINGHUANDEJIECHUBIAOMIANSHANGCHANSHENGSHIDANGDEYAJINLI,SHILIANGGEDUANMIANJINMITIEHE,BINGXIANGDUIHUADONG。DUANMIANJIANBAOCHIYICENGJIBODEYOUMOHUOSHUIMO,JIEZHITONGGUOSHIZULIHENDA,ZUZHIYETIXIELOU,CONGERDADAOMIFENGDEMUDE。JIXIEMIFENGANZHUANGZHILIANGDEHAOHUAIZHIJIEYINGXIANGDAOSHUIBENGDEANZHUANGZHILIANGHEYUNXINGANQUAN,YINCIBIXUBAWOJIDIANGUANJIANGONGXUDECAOZUO,CAINENGQUEBAOMIFENGDEKEKAOXING。WEIBIANYUCHANSHU,YIYIZEQIANSHUIZHOULIUBENGGUZHANGJIANXIUSHILILAIFENXITANTAO。

二、主要问题

  上海杨浦区新江湾城清水河泵站配10kv ,1300QZ-100-355 型高压潜水轴流泵,每台水泵单机流量5m3/s,叶轮直径1.3m。随着运用时间的推移,运用频率的增加,逐渐暴露出轴承运行温度同比升高,配套电动机绝

  YUANXIAJIANGDENGWENTI。JINGJIETIJIANCHAFAXIAN:

  (1)CELIANGDIANDONGJIDINGZIRAOZUDUIJIQIAODELENGTAIJUEYUANDIANZU。SHICESANXIANGDUIDIJUEYUANDIANZU<10MΩ(YAOQIU>50MΩ),XISHOUBI<1.1(YAOQIU>1.3),JIDIANDONGJINEIBUYOUSHOUCHAOXIANXIANG。

那个棋牌信誉好   (2)JIANCHAZHOUCHENGQIANGZHONG32 HAOJIXIEYOU,CHUXIANRUHUACHENDIANXIANXIANG。

那个棋牌信誉好   (3)JIXIEMIFENGJINSHUJIEGOUYOUXIUBAN,DANHUANGXIUSHI,DONG、JINGHUANMOCAMIANYOUPIANMO,JIXIEMIFENGDEDONGHUANFUZHUMIFENG(JIO XINGXIANGJIAOQUAN)YIBIANXING、MOSUN。

三、分析

  JINGJIETIJIANCHAFENXI:YOUFENG(JIDIANJIQIANGDEJIXIEMIFENG)DEBUCHANGHUANYADEGUOSI,DONGHUANBUNENGZAIBENGZHOUSHANGLINGHUOYIDONGZAOCHENGDONG、JINGHUANMOSUNJIAODA,QIEMOSUNHOUDEBUDAOBUCHANGWEIYI。YOUQIANGNEIDEYOUYIRUHUABIANZHI,ZAOCHENGYOUFENGDONG、JINGHUANZHIJIANDEMOCAFUSHENRUZAZHIKELI,RUNHUATIAOJIANELIE,YUNXINGSHIWENDUSHENGGAO,JIAJUMOSUN,MIFENGZHUJIANSHIXIAO。SHUIFENG(JIYOUQIANGWAIYUSHUIJIECHUDEJIXIEMIFENG)MIFENGXINGNENGXIAJIANG。YOUYUSHUIBENGQIDONG、TINGZHISHUNJIANYIJISHANGHAIHUANGPUJIANGCHAOWEIZHANGLUOBIANHUAJIAOKUAISHI,YUNXINGGONGKUANGBIANHUAJULIE,ZAOCHENGYALIBODONGDA,HANYOUDALIANGNISHADEJIANGSHUIZAIYALIZUOYONGXIASHENTOUSHUIFENG,JINRUYOUQIANG,JIASHANGYOUFENGMOSUNCHANSHENGDEWENDU,JIASUYOUZHILIEHUA,CHANSHENGZAZHIHESHUIFEN,JINYIBUCUCHENGYOUQIANGNEIYOUFENGXINGNENGDEXIAJIANG,ZAOCHENGDIANJIQIANGNEIDINGZIRAOZUSHOUCHAO,JUEYUANDIANZUXIAJIANG。

四、机械密封的结构及功能

  该机械密封由静环、动环、补偿环、卡环、辅助密封组成(见图1)。静环为合金材料,工作端面经过精加工,外壁及端面包一圈L 型橡胶衬套,安装在电机轴伸端的静环座内。动环是石墨或合金材料,动环内圈安装辅助轴向密封为O 型氟橡胶圈那个棋牌信誉好。补偿环为不锈钢材料,周向均布多弹簧,对动环的轴向位移进行弹性补偿,补偿环的周向设有一圈紧定螺钉,在调整机械密封时起到轴向定位与防转作用。卡环对补偿环起轴向定位加固作用。

单面多弹簧机械密封结构

TU1 DANMIANDUODANHUANGJIXIEMIFENGJIEGOU

  QINGSHUIHEBENGZHANQIANSHUIZHOULIUBENGSUOSHIYONGDEJIXIEMIFENGGONGYOULIANGDAO(JIANTU2),DIYIDAOSUCHENGSHUIFENG,FANGZHISHUIBENGYOUQIANGDEYOUYEXIANGQIANGTIWAIXIELOU,TONGSHIYOUYAOFANGZHIQIANGTIWAIDESHUIXIANGQIANSHUIBENGYOUQIANGNEISHENLOU。DIERDAOSUCHENGYOUFENG,FANGZHIYOUQIANGNEIDEYOUYEXIANGDIANJINEIBUSHENLOU。LIANGTAOJIXIEMIFENGWEIDANMIANDUODANHUANGJIXIEMIFENG,SHUIFENGMOCAFUCAILIAOYOUTANHUAWU(JINGHUAN)YUTANHUAWU(DONGHUAN)CAILIAOPEIDUI。YOUFENGMOCAFUCAILIAOYOUTANHUAWU(JINGHUAN)YUSHIMO(DONGHUAN)CAILIAOPEIDUI。

1300QZ-100-355 型潜水轴流泵剖面图

TU2 1300QZ-100-355 XINGQIANSHUIZHOULIUBENGPOUMIANTU

五、机械密封的安装调试

  1.ANZHUANGQIANDEJIANCHAYUCELIANG

那个棋牌信誉好   (1)JIANCHAJIXIEMIFENGBIAOMIANWUQIKONG、MADIAN、LIEWEN、HUAHEN、PIANMOJIFEIBIANDENGQUEXIAN,YIBIMIANZAOQIXIELOU。DONG、JINGHUANMIFENGJIAOQUANDEBIAOMIANBUDEYOUCANSUN、HOUBOBUJUNJIRUANYINGBUJUNXIANXIANG。

  (2)DONGHUANNEIJINGYUZHOUJINGDEJIANXIYINGZAI0.2~0.40mm,YIBIMIANMIFENGQUANFUDONGXINGCHA。CELIANGJINGHUANHOUDUYUJINGHUANZUODESHENDU,YIBAOZHENGJINGHUANANZHUANGDAOWEI。DONGHUANDETUTAIGAODU≥lmm,YIMIANYINGXIANGSANRE。

  (3)CELIANGDANHUANGDEZIYOUDUYINGYIZHI,DANHUANGLIANGDUANMIANYINGBAOCHIPINGXING,BIMIANYINDANHUANGLIBUPINGHENGZAOCHENGDUANMIANDANBIANMOSUN。DANHUANGDEWAIBIAOMIANQINGJIEWUXIUSHI。DANHUANGZIYOUZHANGDUYUNCHA<0.5mm,YASUOLIANGYAOQIUWUCHA<±2mm。

那个棋牌信誉好   2.JIXIEMIFENGANZHUANGDEGUANJIANGONGXU

那个棋牌信誉好   (1)JINGHUANDUANMIANYUZHOUCHUIZHIDU

那个棋牌信誉好   ZAIJINGHUANBIAOMIANTUYICENGQINGJIEDEJIYOUHUOTOUPINGYOU,BAL XINGXIANGJIAOCHENTAOTAOZAIJINGHUANSHANG,YINJINGHUANYUJINGHUANZUOWEIGUOYINGPEIHE,WEIBIANYUANZHUANG,KEZAIL XINGXIANGJIAOCHENTAOWAIMIANTUDIANHUANGYOU,QINGANRUJINGHUANZUOZHONG,RUOANBUXIAQU,KEDIANSHANGRUANMUTIAOQINGQINGQIAORU,QIAOJISHIYONGLIYAOQING,DUIJIAO180°LUNLIUDIANJI,BUKEJINDUIJUBUDIANJI,YIMIANZAOCHENGJINGHUANPIANXIEKAZHU,ANZHUANGBUDAOWEI,JUBUQIAOQUBIANXINGDENGYINGXIANGXIAYIBUANZHUANG。ZHUYAOKONGZHICUOSHISHITONGGUOJINGHUANDUANMIANYUZHOUCHUIZHIDUDECELIANGYUDIAOZHENGLAIBAOZHENG。

静环端面与轴垂直度测量

TU3 JINGHUANDUANMIANYUZHOUCHUIZHIDUCELIANG

BIAO1 JINGHUANDUANMIANYUZHOUCHUIZHIDUCELIANGJILU

静环端面与轴垂直度测量记录

  BENGYONGJIXIEMIFENGZAIZHOUJING>50~120mm SHI,YAOQIUCHUIZHIDU≤0.06mm。ZAIZHOUHESHIWEIZHIJIASHEBAIFENBIAOBIAOZUO,JIANGBAIFENBIAOCETOUCHUIZHIYUJINGHUANDUANMIANYAXIA1~2mm,DIAOJIEBAIFENBIAOPANMIANDUILING,TONGGUOPANCHECELIANGJINGHUANDUANMIANJUNFEN8 GEDIANYUZHOUDECHUIZHIDU,JINGCELIANGZUIGAODIANZAI2 FANGWEI。YONGRUANMUKUAIDIANZAI2 FANGWEI,QINGQINGDIANJI,YONGBAIFENBIAOJIANSHIBIANHUALIANG,YICIDIAOZHENGGECELIANGZHIPIANDAFANGWEI,ZAIPANCHEYIQUANHOU,ZHI1 FANGWEIJIANGBAIFENBIAOZHONGXINDUILING,ZAICICELIANG8 GEFANGWEIDEDUANMIANCHUIZHIDU,ZHIZHIMEIGEFANGWEICELIANGZHIDADAO0.01~0.02mm。DIAOZHENGJINGHUANDUANMIANYUZHOUCHUIZHIDUKEAN:

  JISUAN,LX—DIAOZHENGFANGWEIDEDUANMIANCHUIZHIDUDIAOZHENGZHI(X WEI1~8 GEGEDIANDEFANGWEI);L0—DIAOZHENGFANGWEIDUANMIANCHUIZHIDUCELIANGZHI;L180—DIAOZHENGFANGWEIDUIJIAO180°DUANMIANCHUIZHIDUCELIANGZHI。

那个棋牌信誉好   PANCHECELIANGDIAOZHENGJINGHUANDUANMIANYUZHOUDECHUIZHIDUBUSHIYICIJIUNENGCHENGGONGDE,WANGWANGXUYAOZHONGFUJICI,ZHUJIANSHICHUIZHIDUDIAOZHENGDAOHEGEFANWEI。SHIJIANJINGYAN,YANGEKONGZHICHUIZHIDUZAI 0.01~0.02mm FANWEI,KESHIJIXIEMIFENGANZHUANGHOUDEQIMIXINGSHIYANDEHEGELVDEDAOXIANZHUTIGAO。

  (2)DUANMIANBIYA

  CHUIZHIDUDIAOZHENGHEGEHOU,ZAIZHOUSHANGTAOZHUANGDONGHUAN,ZAIDONGHUANNEICAOZHUANGRUO XINGXIANGJIAOMIFENGQUAN,ZAIYASHANGBUCHANGHUAN。DUIBUCHANGHUANDEZHOUXIANGWEIZHIQUEDING,SHEJIDUANMIANBIYADIAOZHENG。DUANMIANBIYASHIDANXINGLIZUOYONGZAIMIFENGDUANMIANSHANGCHANSHENGDEDANWEIMIANJISHANGDEYALI,QIZHUYAOZUOYONGSHIBAOZHENGZHUJIZAIQIDONG、TINGCHEHUOJIEZHIYALIBODONGSHI,SHIMIFENGMIANNENGJINMITIEHE;TONGSHIYONGYIKEFUDONGHUANFUZHUMIFENGQUANYUZHOUBIAOMIANJIANDEMOCAZULI,SHIDONGHUANNENGZHUISUIMIFENGMIANDEMOSUNYANZHOUXIANGYIDONG。DUANMIANBIYAGUODAJIANGJIASUMOCAFUMOSUN;BIYAGUOXIAOZEYIXIELOU。DIAOZHENGBIYAQISHIJIUSHIDIAOZHENGDANHUANGDEYASUOCHICUN,DUIBUCHANGHUANDEZHOUXIANGDINGWEI。GAIQIANSHUIBENGKEGENJUYUANSHIBIAOJI(SHUIBENGJIETISHIYUANBUCHANGHUANDEZHOUXIANGWEIZHIBIAOJI),JIEHESHUIBENGTUZHISHANGBIAOZHUDEJIXIEMIFENGZHOUXIANGWEIZHICHICUN,JIANGUJINGZHANGSHIJIANYUNXINGDANHUANGHUIPIDONGSONGDONG,XIANGNEIDIAOZHENG1mm。BINGQIEDANHUANGZUOBUNENGPIANXIE,KECELIANGBUCHANGHUANDUANMIANZHOUXIANGGEDIANYUZHOUSHENZHIKOUJULIWUCHALAIBAOZHENG。HEGEHOUDUIJIAONINGJINBUCHANGHUANJINDINGLUODING,CISHIYONGSHOUTUIDONGHUANZUOZHOUXIANGYASUO,SONGSHOUHOUDONGHUANYINGNENGZIDONGDANHUI,WUKAZHI。

  3.QIMIXINGSHIYAN

那个棋牌信誉好   CAIYONGZAIMIFENGBUWEITUMOFEIZAOYEJINXINGJINGYASHIYANJIEHERENGONGPANCHEDEFANGFAJIANCEGEQIANGTIQIMIXINGQINGKUANG。

那个棋牌信誉好   (1)XIELOUFENXIJIPANDUAN

那个棋牌信誉好   XIELOULIANGJIAOXIAO,DUOWEIDONGHUANHUOJINGHUANMIFENGQUANCUNZAIWENTI;XIELOULIANGJIAODASHI,ZEBIAOMINGDONG、JINGHUANMOCAFUJIANCUNZAIWENTI。ZAICHUBUGUANCHAXIELOULIANG、PANDUANXIELOUBUWEIDEJICHUSHANG,ZAIRENGONGPANCHEGUANCHA,RUOXIELOULIANGWUMINGXIANBIANHUAZEJING、DONGHUANMIFENGQUANYOUWENTI;RUPANCHESHIXIELOULIANGYOUMINGXIANBIANHUAZEKEDUANDINGSHIDONG、JINGHUANMOCAFUCUNZAIWENTI;RUXIELOUJIEZHIYANZHOUXIANGPENSHE,ZEDONGHUANMIFENGQUANCUNZAIWENTIJUDUO,XIELOUJIEZHIXIANGSIZHOULOUCHU,ZEDUOWEIJINGHUANMIFENGQUANSHIXIAO。

那个棋牌信誉好   (2)QIMIXINGSHIYAN

  ANZHUANGHOUDUIDIANJIQIANG、YOUQIANGNEIYONGKONGYAJIDAYAZHI0.2MPa,GUANBIXIANGGUANQILUZHAFAJINXINGQIANGTIBAOYA。ZAIJINGHUANYUJINGHUANZUOPEIHECHU、DONGHUANYUJINGHUANTIEHECHU、BUCHANGHUANYUZHOUZHIJIANTUMOFEIZAOYE,PANCHEJIANCHASHIFOUYOUFANPAOXIANXIANG,TONGSHIJIANSHINEIQIANGYALIBIAOSHUZHISHIFOUYOUBIANHUA。

六、结语

  QINGSHUIHEBENGZHA10KV QIANSHUIZHOULIUBENGJIEGOUZHONGDEJIXIEMIFENGZAIANZHUANGDIAOZHENGZHONGCAIYONGPANCHECELIANG,KONGZHIJINGHUANDUANMIANYUZHOUCHUIZHIDU≤0.02mmDEZUOFA,JING6 TAIXIANGTONGXINGHAOSHUIBENGDEANZHUANGSHIJIANYANZHENG,JUNZHIXUYIZHILIANGCIDIAOZHENGJIKEDADAOMIFENGQIANGBAOYA0.2MPa,12h WUMINGXIANSHENLOU(≤0.01MPa),FUHEYAOQIU,TIGAOXIAOLV,JIESHENGGONGSHI。