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zhaiyao:fenxilehongmenshuidianchangyunxingzhongdiefabufenchongguandeyuanyin、jieshaolediefabufenchongguandepanduanhechuli,tichulefangzhidiefabufenchongguandecuoshi。

關鍵詞蝶閥部分沖關分析措施

蝶閥是水電廠大型構件和應用比較普遍的機組閥門之一,它由閥體、蝶板和控制機構組成,設置在水輪機蝸殼進水口處,以控制機組水流,其主要作用是:(l)當某系統失靈、故障造成機組過速時可關閉蝶閥以保護機組;(2)在檢修需要時可關閉蝶閥以便停機檢修;(3)機組長時間調相運行或長時間停機備用,在系統允許情況下可關閉蝶閥以減少導葉漏水。

diefazaizhengchangyunxingshichuyuquankaihuoquanguanzhuangtai,yunxingzhongdediefazaijizudaifuhedeqingkuangxiazixingguanbidexianxiangbeichengweichongguan。ruoyunxingzhongchuxiandiebanhuanmanpianliquankaizhuangtai,xuanzhuan 30~70°,shidiefachuyubufenguandezhuangtai,chengzhiweibufenchongguan。

diefabufenchongguanduishuilunfadianjizudeyingxiangheweihaizhuyaoshi:yinqishuilunjijixiezhendong;gaosushuiliujiangzaidiebanhoumianchanshengkongshiqu,shidiebanshoudaoqishipohuai;chanshengjixiebiejing,shijieliqigangzhendong,yanzhongshibengduanlianjieluogan;jianshaojizuchuli。

yinci,taolunhejiejuezheyiwentiduishuidianchanganquanyunxingyouzhuzhongdaxianshiyiyi。

1 蝶閥部分沖關的原因和分析

chanshengbufenchongguanxianxiangdeyuanyinbijiaofuza,zaipaichulewuningcaozuobashou、wupengguandiefajidianqi,yijidiefakaiqihousuodingmeiyoutourendengyinsuhou,fenxiquedingbufenchongguandeyuanyinruxia。

(l)diefajieliqi、sitongfahuosaimosun,shihuosaiqiangpangenmifengbuyan,yaliyoucongguanbiqiangloushi,zhishihuosaizaibupinghengyalixiaxiangguanceyundong,jinerdaidongdiebanzhuanxiangguandeweizhi。dangguanduandaoyidingweizhishi,shengyudeyaliyouqizuoyong,zuzhidiebanjixuzhuanxiangquanguanweizhi。

(2)diefazhuandongzhouchengweinengluodaoweizaochengfazhoupianlianzhuangzhongxian,zhishidiebanshangchanshengguanbiliju,huozhouchengmosun、dahua,zaochengdiefazhouchengmocalijujianxiao,yizhiyunxingzhong,zaimouyiyuanyin(rujieliqi、sitongfayaliyouloushi)huozhendongxia,diebanxiangguancepianzhuan。

(3)ourandeshuiliubupinghengzaifatishangchanshengbupinghengliju,shidiebanzhuanxiangguance。

(4)diefajianxiuweinengdadaozhiliangbiaozhun,zhuyaoshizhuandongzhouweinengluodaoweihuozhongxinzhouxianpianyi,shidiefabunenganyaoqiubaochiwendingzhuangtai。

(5)richangweihubudang,liuxiayinhuan。

(6)weinengjiangdiebankaiqidaoquankaiweizhi,liuyouxingchengkongjian,maixiabufenchongguandeyinhuan。

2 蝶閥部分沖關的判斷和處理

2.1 蝶閥部分沖關的判斷

jujingyan,ruguozaiyunxingzhongchuxianyixiaxianxiang,keyipanduandiefafashenglebufenchongguanxianxiang。

(l)jiankongxitong、baohuxitonggongzuozhengchang,qixinhaoheyinxiangbaojingxitongmeiyoudongzuo,danfadianjichukoudeyougonggonglvbiaozhishihuanmanxiajiang。

(2)shuilunjidiaosuqigongzuozhengchang,meiyoumingxianbianhua,daoshuixiekaidumeiyoubianhua,danzaidiefashikekandaodiefakaiduzhizhenzhengxiangguandefangxianghuanmanyidong。

(3)bufenchongguanxianxiangjiaoyanzhongshi,diefashiyoumingxianxiangsheng,youshizaidiefashikekandaokongqifapaoshui。

(4)dangdiebanzai 30~70° fanweinei,diefabeishuichongguandeguochengtaikuaishi,shuiyagangguanneihuichanshenghendadeshuichuiyali,chanshengqiangliedezhendong。

2.2 蝶閥部分沖關的處理

fashengbufenchongguanxianxiangshi,tongchangdechulifangfashianzhaokaidiefadechengxucaozuo,yibandounengshidiefazhongxinkaiqidaoquankaiweizhi,jizuzhongxinjinrenzhengchangdegongzuozhuangtai。danruozhezhongcaozuofangfashixiao,huofashengjiaoyanzhongdechongguanguzhang,keanyixiafangfachuli。

(l)jianchadiefajieliqi、sitongfa,ruguofaxianlouyou,shuomingxibupinghengyaliyouyinqi,cishikeshizhutaiqiyouyuanfaxiangjieyouqichongyou。

(2)dangdiefabufenchongguanyinqijiaoyanzhongfanyingshi,yingxianjiangdaoshuixiekaidukuaisuyazhikongzai,zaijiangjizuyougong、wugongfuhediaozhengzhi 0,zuihouantingjiliuchengcaozuotingji。

(3)duidiebanweinengkaiqidaoweieryinqidebufenchongguan,kejianchadiefakongzhiyoubengshifouqidong,ruoweiqidong,zeshuomingdiefaweikaiqidaowei,cishikeqidongyoubeng,jixukaiqidiefa,daidiefaquankaihouyingguantingyoubeng。

(4)zaiyunxingzhongruodiefakongzhiyoubengqidong,shuomingguandiefazidongzhuangzhiwudongzuo,huozhewupengdiefacaozuobashouzhiguanbice,cishiyingjiangguandiefajidianqifugui,jiangyoubengtingzhi,tongshiankaidiefacaozuochengxu,jiangdiefazhongkaiqi。

3 防止蝶閥部分沖關的措施

3.1 技術措施

(l)jiazhuangdiefaweizhidexinhaozhuangzhi。dangyunxingzhongdediefapianliquankaiweizhishi,jifachuxinhao,zhongkongshideguangzipailiang,yunxingrenyuankegenjuxinhaopanduanshishiguguandiefahuanshibufenchongguan。

(2)guifanbufenchongguandeyibanchulicuoshi,jiketaiqiyouyuanfa,zhidaodiefaquankaixinhaochuxianzhihou,zailuoxiayouyuanfa。

(3)tigaodiefajianxiuzhiliang。youyudiefatijipangda,qiedingweilaogu,yaojiejuezhuandongzhoudaoweiwenti,xuyaojiangdiefajieti、diaozhuang,gongchengliangda,qiediefashikongjiansuoxian,yehennanzuodao,youyinweidiefashiyongshijianchang,mosunda,jietidaxiuyenanbaozhengzhiliang。muqianpubianshiyongjiadianpiandebanfalaidiaozhengzhongxinweizhi,zhezaiyidingchengdushangnengjiejuediefatibenshendewenti。tigaojianxiugongyi,baozhengdiefaquankaihoudiebanhuomenpingxingyushuiliu。

(4)tigaojieliqimifengxingneng,genghuangenghaodemifengcailiao,dingqixiangjieliqihuosaikaiqiqiangbuyou。

(5)zaidiefajinshuikouchuanzhuangshuijianshiqi,yijianshishuiliubodongdeqingkuang,bingzaidiefadeyunxingguichengzhongzengjia 1 xiangdingqigongzuodeneirong,jimeixingqiqidongyoufa,geijieliqiyouluchongyou。

3.2 組織措施

(l)jiaqiangduizhigongdejishupeixun,zhangwobufenchongguandepanduanhejishuchulijineng,zhangwodiefayunxingguilv。

(2)jianlihejianquanxiangguanzhidu,ruquexiandengji、chuli、kaohejianglizhidu。

(3)jiaqiangduidiefaderichangjianchayuweihu。duichuxiandefeizhengchang“diefaguanbi”xinhaoyingzuohaojilu,fenxiyuanyin;zhengchangxunhuijianchashiyingjiaqiangduidiefahepanglufadejiancha;yaoqiucaozuojigoudouzaizhengquedeweizhishang,gediancicaozuofa、jidianqi、jiankongxitong、youbengyingfuheguichengyaoqiu;zengjiaxunjianneirong,youqizhuyijianchajieliqi、sitongfa、geipaiyouguanhuiluyouwulouyouxianxiang。


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