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您的位置:中浦德机械流体设备 > 行业新闻 > 两个中开双吸泵典型故障案例分析, 值得借鉴!

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两个中开双吸泵典型故障案例分析, 值得借鉴!
时间 : 2018-09-01 11:02 浏览量 : 41

一、案例I:循环泵汽蚀破坏

某电厂3#机组(25MW)配用二台双吸中开泵作循环冷却泵,泵的铭牌参数为:

Q=3240m3/h,H=32m,n=960r/m,Pa=317.5kW,Hs=2.9m(JINPSHr=7.4m)

BENGZHUANGZHIWEIYICIXUNHUANGONGSHUI,QUSHUIKOUHEPAICHUKOUJUNZAITONGYISHUIMIANSHANG。


KAICHEYUNXINGBUDAOLIANGGEYUE,BENGYELUNBEIQISHIPOHUAICHUANKONG。


CHULIGUOCHENG:

SHOUXIANZUOXIANCHANGDIAOCHA,FAXIANBENGDECHUKOUYALIJIN0.1MPa,ERQIEZHIZHENJULIEBAIDONG,BINGBANYOUBAOPOQISHIXIANGSHENG。ZUOWEISHUIBENGZHUANYERENYUAN,DIYIYINXIANGJIUZHIDAOZHEISHIYOUYUPIANGONGKUANGYUNXINGERZAOCHENGQISHIFASHENG。YINWEIBENGDESHEJIYANGCHENGWEI32m,FANYINGZAITUCHUYALIBIAOSHANG,DUSHUYINGZI0.3MPaZUOYOU。ERXIANCHANGYALIBIAODUSHUZHIYOU0.1MPa,XIANRANBENGDEYUNXINGYANGCHENGZHIYOU10mZUOYOU,JIBENGDEYUNXINGGONGKUANGYUANLIQ=3240m3/h,H=32mDEGUIDINGGONGKUANGDIAN,CIDIANDEBENGBIXUQISHIYULIANGYIWUFAYULIAODEZENGDA。BIRANFASHENGQISHI。


QICIZUOXIANCHANGDIAOSHI,RANGYONGHUZHIJUERENZHISHIBENGXUANXINGYANGCHENGGUOSHI,WEILESHIBENGXIAOCHUQISHI,BIXUSHIBENGDEYUNXINGGONGKUANGHUIDAOQ=3240m3/h,H=32mDEGUIDINGGONGKUANGFUJIN。FANGFAJIUSHIGUANXIAOCHUKOUFAMEN。YONGHUDUIGUANXIAOFAMENFEICHANGDANXIN,TAMENRENWEIXIANZAIQUANKAIFAMENYUNXING,LIULIANGSHANGBUCHONGFEN,ZHISHILENGNINGQIJINCHUWENCHADA33℃(RUOLIULIANGCHONGZU,ZHENGCHANGJINCHUWENCHAYINGZAI11℃YIXIA),RUOZAIGUANXIAOCHUKOUFA,BENGDELIULIANGQIBUGENGXIAO。WEILESHIDIANCHANGCAOZUORENYUANFANGXIN,YAOTAMENBUZHIYOUGUANRENYUANFENTOUGUANCHALENGNINGQIDEZHENKONGDU、FADIANCHULISHU、NINGQICHUSHUIWENDUDENGDUILIULIANGBIANHUAFANYINGMINGANDESHUJU,BENGCHANGRENYUANZEZAIBENGFANGZHUBUGUANXIAOBENGCHUKOUFA。CHUKOUYALISUIZHEFAMENKAIDUDEJIANXIAOERZHUBUSHANGSHENG,DANGSHANGSHENGZHI0.28MPaSHI,BENGDEQISHIXIANGSHENGWANQUANXIAOCHU,NINGQIZHENKONGDUYECONG650GONGZHUSHANGSHENGDAO700GONGZHU,NINGQIDEJINCHUWENCHAXIAJIANGDAO11℃YIXIA。ZHEIXIEDOUSHUOMING,YUNXINGGONGKUANGHUIDAOGUIDINGDIANZHIHOU,BENGQISHIXIANXIANGJIKEXIAOCHU,BENGDELIULIANGHUIFUZHENGCHANG(BENGPIANGONGKUANGFASHENGQISHIHOU,LIULIANG、YANGCHENGDOUYAOXIAJIANG)。DANCISHIFAMENKAIDUZHIYOU10%ZUOYOU,RUOZHANGCIYUNXING,FAMENYERONGYISUNHUAI,TONGSHIHAONENGBUJINGJI。


JIEJUEBANFA:

YOUYUYUANBENGYANGCHENGYOU32m,ERXINXUYANGCHENGJIN12m,YINWEIYANGCHENGXIANGCHATAIYUAN,QIEGEYELUNJIANGDIYANGCHENGDEJIANDANBANFAYIBUKEXING。YUSHITICHUDIANJIJIANGSU(960r/mJIANGZHI740r/m)GAIZAO,BENGYELUNZHONGXINSHEJIDEFANGAN。CIFANGANHOULAISHIJIANBIAOMING,CHEDIJIEJUELEWENTI,BUJINJIEJUELEQISHIWENTI,HAIDADADIJIANGDILENENGHAO。

BENANWENTIDEGUANJIANSHIBENGXUANXINGYANGCHENGGUOGAOZAOCHENGDE。


 一、案例Ⅱ:循环水泵位移和断轴事故分析



GAIGONGCHENGGONGYOU6TAI24CUNXINGXUNHUANSHUIBENG,LUTIANANZHUANG,BENGDEMINGPAICANSHUWEI:

Q=3000m3/h,H=70m, N=960r/m(SHIJIZHUANSUDA990r/m)

PEITAODIANJIGONGLV800kW


BENGZHOUCHENGWEISKFQIUZHOUCHENG。ZHIRUNHUA。CONGDONGDUANZHOUCHENGXIANGGUDING,CHENGSHOUCANYUZHOUXIANGTUILI;ZHUDONGDUANZHOUCHENGWAIQUANZHOUXIANGLIUYOUYOUDONGJIANXI。

BENGZHUANGZHIRUXIATUSUOSHI:

1

 



XIANGJIAOSHENSUOJIELIANGDUANFALANFENBIEYUGUANDAOLIANJIE,LIANGDUANFALANBENSHENWEIYONGZHANGLUOSHUANGANGXINGLIANJIE。

BENGANZHUANGHAOZHIHOU,KAISHIZHUTAIDIAOSHI,DIAOSHIZHONGCHUXIANXIALIEQINGKUANG:

1)BENGZUOHETUCHUGUANDAOSHUINIGUDINGZHIDUNJUNFASHENGWEIYI,WEIYIFANGXIANGRUZHUANGZHISHIYITUSUOSHI:BENGXIANGYOUYI,GUDINGZHIDUNXIANGZUOYI,YOUJITAIBENGZHIDUNSHUINIZUOYINWEIYICHUXIANBENGLIE

2)YALIBIAODUSHUZAIKAIFAZHIQIANDA0.8MPa,BUFENKAIFAZHIHOUWEI0.65MPaZUOYOU,DIANDONGDIEFAKAIDUYUE15%。ZHOUCHENGBUWEIWENSHENG、ZHENDONGFUDUDOUZHENGCHANG 。

3)TINGBENGZHIHOUJIANCHALIANZHOUQIDEDUIZHONGQINGKUANG,FAXIANJIBENGLIANGLIANZHOUQIZUOYOUCUOWEIJIAODA,JUANZHUANGRENYUANJIANCHA,CUOWEIZUIYANZHONGDEWEI1#BENG(CUOWEI1.6mm),5#BENG(CUOKAI3mm)、6#BENG(CUOKAI2mm),QITABENGYEYOUSHUSHISIDECUOWEI。

4)DIAOZHENGDUIZHONGHOU,ZHONGXINKAICHESHI,YONGHUHEANZHUANGKUAI3CAIPIAOappYONGBAIFENBIAOCELIANGBENGJIAODEWEIYILIANG,ZUIDADEDA0.37mm,TINGBENGHOUYOUHUIDAN,DANBENGJIAOBUWEIBUNENGFUYUAN。


DUANZHOUSHIGUFASHENGZAI5#BENGSHANG。5#BENGDUANZHOUZHIQIAN,DUANXUYUNXING3-4CI,LEIJIYUNXINGYUE60XIAOSHIZUOYOU。ZUIHOUYICIKAICHEHOU,YUNXINGZHICIRIWANSHANGFASHENGDUANZHOU。DUANZHOUBUWEIZAIZHUDONGDUANZHOUCHENGDINGWEIZHOUJIANTUIDAOCAOCHU,DUANMIANYUZHOUZHONGXINLVEWEIQINGXIE 。


DUISHIGUYUANYINDEFENXIYIJIAN:DUANZHOUSHIGUFASHENGZAI5#BENGSHANG,KENENGYOUZHOUBENSHENZHILIANGWENTI,YEYOUWAIBUYINSUDEWENTI。


1)5#BENGFASHENGDUANZHOU,BUPAICHU5#BENGZHOUCUNZAIZHILIANGWENTI,ZHEIXIEWENTIKENENGZHOULIAOBENSHENYOUQUEXIAN,YEKENENGYU5#BENGZHOUTUIDAOCAOJIAGONGYUANHUBUGUIFANDAOZHIYINGLIJIZHONG,ZHEISHIDUANZHOUYUANYINDEGEXINGWENTI。


2)5#BENGDUANZHOUYUWAILIZUOYONGSHIBENGCHANSHENGWEIYIYOUGUAN。ZAIWAILIZUOYONGXIA 5#BENGLIANZHOUQIZUOYOUCUOWEIZUIDA。ZHEIGEWAILIDECHANSHENGSHIYOUYUTUCHUGUANSHANGDESHUIYALIZUOYONGXIACHANSHENGDEZHANGLI(ZHEIGEZHANGLIFDANGP2=0.7MPaSHI:

F=0.7×10.2×(πd2)÷4=0.7×10.2×(π×802)÷4=35.9T,DANGBIFAYUNXINGSHI,P2=0.8MPa,CISHIF=0.8×10.2×(π×802)÷4=41T),ZHEIMEDADELALIKAOXIANGJIAOGUANBIGANGDUGENBENCHENGSHOUBUZHU,BIRANXIANGZUOYOUYANSHEN,ZHEIYANGLIXIANGYOUCHUANDIDAOBENGSHANG,SHIQICHANSHENGWEIYI,XIANGZUOCHUANDIDAOSHUINIZHIDUN,SHIQITUILIE,RUGUOZHIDUNJIAOJIANGU、BUKUA,ZEBENGXIANGYOUDEWEIYIJIUGENGDA。SHISHIBIAOMING,5#BENGDESHUINIZHIDUNWEITUILIE,ZE5#BENGDEWEIYIJIUGENGDA,SUOYITINGHOU,5#BENGDELIANZHOUQIZUOYOUCUOWEIJIUZUIDA(GONGZHONGHAO:BENGGUANJIA)。


3)YINXIANGJIAOGUANBIDEGANGDUBUNENGCHENGSHOUJUDASHUITUILIERZHOUXIANGLAZHANG,SHIBENGTUCHUKOUCHENGSHOUJUDAWAITUILI(BENGDEJINCHUFALANBUNENGCHENGSHOUGUANDAOWAILIZUOYONG),ZHISHIBENGTIWEIYI,DAOZHILIANZHOUQICUOWEI、JIBENGLIANGZHOUBUTONGXINYUNXING,ZHEISHIDAOZHI5#BENGDUANZHOUDEWAIBUYINSU。


JIEJUEFANGFA:JIANGLUNTAIJIEYONGZHANGLUOGANGANGXINGLIANJIE,BINGRANGTUCHUGUANLUNENGZIYOUSHENZHAN,WEIYIHEDUANZHOUWENTIERBUZAIFASHENG。



SHUIBENGCHANGJIANGUZHANGCHULICUOSHI

1、SHUIBENGYANGCHENGGUOGAOYINFADEYUNXINGGUZHANG:

SHEJIYUANZAIZUOSHUIBENGXUANXINGSHI,BENGDEYANGCHENGSHOUXIANSHITONGGUOLILUNJISUANQUEDINGDE,WANGWANGYOUXIEBAOSHOU,ZHISHIXINXUANBENGDEYANGCHENGGAOYUSHIJIZHUANGZHISUOYAOQIUDEYANGCHENG,CONGERDAOZHIBENGPIANGONGKUANGYUNXING。YOUYUPIANGONGKUANGYUNXING,HUIZAOCHENGRUXIAYIXIEYUNXINGGUZHANG:

(1)DIANJICHAOGONGLV(DIANLIU),CHANGCHANGCHUXIANZAILIXINBENGSHANG 。

(2)BENGFASHENGQISHIXIANXIANG,BINGFASHENGZHENDONGHEZAOYIN,CHUKOUYALIZHIZHENPINFANBAIDONG。YOUYUQISHIFASHENG,HAIDAOZHIYELUNQISHIPOHUAI,YUNXINGLIULIANGXIAJIANG。


CHULICUOSHI:FENXIBENGYUNXINGSHUJU,ZHONGXINQUEDINGZHUANGZHIYAOQIUDESHIJIYANGCHENG,DIAOZHENG(JIANGDI)BENGDEYANGCHENG.ZUIJIANDANDEFANGFASHIQIEXUEYELUNWAIJING;RUQIEXUEYELUNBUZUYIMANZUYANGCHENGJIANGDIZHIDEYAOQIU,KEGENGHUANXINSHEJIDEYELUN;HAIKEJIANGDIANJIZUOJIANGDIZHUANSUDEGAIZAOYIJIANGDIBENGYANGCHENG。



2、GUNDONGZHOUCHENGBUJIANWENSHENGCHAOBIAO

GUOCHANGUNDONGZHOUCHENGYUNXUDEZUIGAOWENDUBUCHAOGUO80℃,JINKOUZHOUCHENGRUSKFZHOUCHENG,YUNXUDEZUIGAOWENDUKEDADAO110℃。PINGSHIYUNXINGJIANCHASHI,DOUYISHOUMOCHUGANLAIPANDUANZHOUCHENGSHIFOUFARE,ZHEISHIBUGUIFANDEPANDUAN。

YINQIZHOUCHENGBUJIANWENDUGUOGAODECHANGJIANYUANYINYOUXIALIEJIDIAN:

1)RUNHUAYOU(ZHI)GUODUO ;

2)JIBENGLIANGZHOUBUDUIZHONG,SHIZHOUCHENGSHOUDAOEWAIDEFUZAI;

3)LINGBUJIANJIAGONGWUCHA,TEBIESHIZHOUCHENGTIYUBENGZUOXIANGPEIHEDEDUANMIANCHUIZHIDUCHAOCHA,YEHUISHIZHOUCHENGSHOUDAOEWAIDEGANRAOLIERFARE;

4)BENGTISHOUDAOTUCHUGUANDAODETUILAGANRAO,CONGERPOHUAILEJIBENGLIANGZHOUDETONGXINDU,YEHUISHIZHOUCHENGFARE;

5)ZHOUCHENGRUNHUABULIANGHUORUNHUAYOUZHIZHONGHANYOUNISHAHUOTIEXIE,YEHUISHIZHOUCHENGFARE;

6)ZHOUCHENGRONGLIANGBUZU,ZHEISHIBENGSHEJIXUANZEDEWENTI,CHENGSHUKUAI3CAIPIAOappYIBANBUCUNZAIZHEIYIWENTI。



3、BENGFASHENGQISHIXIANXIANG,DAOZHIZHENDONGZAOYINZENGDAHEYELUNPOHUAI:

BENGFASHENGQISHIXIANXIANGDESHIZHIYUANYINSHIBENGZHUANGZHIQISHIYULIANG(YINPSHaBIAOSHI)XIAOYUBENGBIXUQISHIYULIANG(YINPSHrBIAOSHI)ERZAOCHENGDE 。

BENGZHUANGZHIQISHIYULIANGNPSHaDEZHISHIYOUZHUANGZHIQUEDINGDE,TAYUDANGDIDAQIYAPa,SHUSONGJIEZHIDEQIHUAYALIPv,BENGQISHIJIZHUNXIANLIXIRUYEMIANDEJIHEGAODUHg,XIRUGUANLUDEZULISUNSHIhwYOUGUAN,JUTIDEJISUANGONGSHIWEI:

 2

hw——BENGXIRUGUANLUDEZULISUNSHI,YIBANWEI0.3-0.5m


DANGZHUANGZHIQUEDINGZHIHOU,ERQIEXIRUSHUIWEIHENGDINGDEQINGKUANGXIA,NPSHaZHIWEIYIGEHENGDINGZHI。

BENGBIXUQISHIYULIANGNPSHrZHISHITONGGUOBENGSHIYANQUEDINGDE,YIBANZHIZUOSANGELIULIANGDIAN(JIGUIDINGFANWEINEIDESANGELIULIANGDIAN:XIAOLIULIANGDIAN、SHEJILIULIANGDIAN、DALIULIANGDIAN)DESHIYAN,ERQIESANGELIULIANGDIANDENPSHrZHIBUYIYANG,ZHENGCHANGQINGKUANGXIA,SHEJILIULIANGDIANDENPSHrZHIZUIXIAO,QITALIULIANGDIANTEBIESHIDALIULIANGDIANDENPSHrZHIYAOZENGDA。CHAOCHUDALIULIANGDIANYIWAIDENPSHrZHIYIBANNEIDOUJIJUZENGDA,WUFAYULIAO。


SHEJIYUANQUEDINGBENGDEANZHUANGGAODU,ZHUANGZHIQISHIYULIANGNPSHaZHIYAOMANZUBENGSHIYONGFANWEINEIZUIDABIXUQISHIYULIANGNPSHrZHIDEYAOQIU。DANSHIWEISHENMEHAIHUIFASHENGQISHIXIANXIANGNI?QIYUANYINYOUYIXIAJIDIAN:BENGPIANGONGKUANGYUNXINGZAOCHENGQISHIDEFASHENG:YOUYUXUANXINGWUCHA,SHIBENGDEYUNXINGGONGKUANGDIANBUZAIBENGDEGUIDINGFANWEINEI,ERSHIPIANZAIDALIULIANGQUYUYUNXING。YOUYUDALIULIANGDIANDENPSHrZHIWUFAYULIAODEZHIDA,ZAOCHENGNPSHa<NPSHRrERFASHENGQISHI;YOUYUZHIZAOWUCHA,BENGDESHIJIBIXUQISHIYULIANGDAYUYANGBENSHANGDEGUIDINGZHI,CONGERSHINPSHr>NPSHaZHIERFASHENGQISHI。


CHULICUOSHI:

ZHENDUIYISHANGSUOSHUZAOCHENGQISHIDESANGEYUANYIN,XIANGYINGDECAIQUYIXIASANZHONGJIEJUECUOSHI:

1)DIAOZHENGBENGDEXINGNENG(YIBANSHIJIANGDIYANGCHENGZHI),SHIBENGDEYUNXINGGONGKUANGDIANHUIDAOGUIDINGDELIULIANGFANWEINEIYUNXING;

2)JIANCHABINGQINGLIXIRUGUANNEIDEZAWU;

3)JIANGBENGFANHUIZHIZAOCHANGZUOQISHISHIYAN,HESHIBENGDEQISHIYULIANGZHISHIFOUDADAOYANGBENGUIDINGZHI;


标签: 两个中开双吸泵典型故障案例分析

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