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zhaiyao:jieshaokuaiguandiefayeyaqudongzhuangzhideweihufangfayuweixiuyaodian。

關鍵詞:快關蝶閥;液壓執行器;維護;維修

1 概述

快關蝶閥液壓驅動裝置可解決電動截止蝶閥止回閥不能快關(>1s)所造成的汽輪機超速問題。當機組出現事故時,快關蝶閥液壓驅動裝置能快速驅動閥門關閉,有效防止汽輪機尾部蒸汽與冷凝水倒灌,瞬間切斷管路保護汽輪機。由此可知快關蝶閥液壓驅動裝置是屬于安全設備裝置,保證其自身正常運轉顯得非常必要,正確的維護與維修方法是保證設備正常運轉的必要的條件,下面就介紹快關蝶閥液壓驅動裝置的維護方法與維修要點。

2 維護方法

kuaiguandiefayeyaqudongzhuangzhidezhengchangyunzhuanxuyaorichangdeweihubaoyang,ruguobuzhuyishebeiderichangweihuyubaoyang,kuaiguandiefayeyaqudongzhuangzhirongyifashengguzhang。caozuorenyuanyingjingchangguanchayeyaxitongyali、zaosheng、zhendong、youwen、youwei、dianya、xingchengkaiguanhexieloudengshixiang,yidanfaxianwentiyaojishijiejue。shiyideweihufangfakeyijianshaokuaiguandiefayeyaqudongzhuangzhideguzhang,yanchangkuaiguandiefayeyaqudongzhuangzhideshiyongshouming,kuaiguandiefayeyaqudongzhuangzhiderichangweihubaoyangdefangfazhuyaoyouyixiafangmian。

(1)kuaiguandiefayeyaqudongzhuangzhizaianzhuangwanchenghou,zaigeiyouxiangjiayoudeshihou,yidingyaoanzhaoshuomingshugeidingdepaihaojiayou,ruoyaoyongqitadeyoupintidaiyidingyaojingguochangjiadeque rencaikeyigenggai,xindeyoupinyeyaojingguoguolvcainengjinruyouxiang,yaoqiuxitongyouyedewurandudengjidadao nas8 yishang。

(2)kuaiguandiefayeyaqudongzhuangzhizaianzhuangwanchenghouchuciyunxingshi,yaoquerendianjidefangxiangshifouzhengque。keyitongguodiandongdianjilaipanduan,ruguofangxiangyushuomingshuyaoqiudefangxiangbuyizhi,zeyaogenggaijiexian。zaiweiquerendianjifangxiangzhengquezhiqian,qingwuchangshijiandekaidongdianji,yimiansunhuaiyoubeng。

(3)kuaiguandiefayeyaqudongzhuangzhizaianzhuangwanchenghouchuciyunxingqian,yingbayiliufawanquansongkai,ranhoumanmanbayaliwangshangdiao,yi 1mpa dizengweiyi,bingzaimeigeyaliduanyunxing 5min,querenwuyichanghouzaiwangshangdiao,zhidaodadaoshuomingshudeyaoqiuyaliweizhi。yalishiyanguochengzhongchuxiandeguzhangyingjishipaichu。paichuguzhangbixuzaixieyahoujinxing。ruohanfengxuyaozhonghan,bixujianggaijianchaixia,chujingyouwuhoufangkehanjie。

(4)buzhunzaizhixingyuanjianyundongzhuangtaixiadiaojiexitongyali。diaoyaqianyingxianjianchayalibiao,wuyalibiaodexitongbuzhundiaoya。yalidiaojiehouyingjiangdiaojieluodingsuozhu,fangzhisongdong。yaodingqijianchayalibiaoshifouzhengquekekao。

(5)kuaiguandiefayeyaqudongzhuangzhizaianzhuangwanchenghouchuciyunxingqian,yaobaxunengqineiqitiyaliyongdanqichongzhishuomingshuyaoqiudeyali,qiebukeyongyangqilaitidai,fouzehuizaochengzhongdashigu。shebeizaiyunshudeguochengzhongbuyunxuxunengqidaiya,zheyangrongyifashengbaozha。

(6)yingdingqi(yigeyue)jianchayouxiangyeweigaodu。diyicijiayoujianyijiazhimanyeweiji,zhengchanggongzuozhuangtaixiayouweiyaoqiuzaiyeweiji 1/2 yishanggaoduweizhi,diyuyeweiji 1/3 gaodushibixujiayou,daiyou“yeweidi”kongzhibaohushi,zaiyeweiguodishiyouyuanxitonghuitingzhigongzuo,zhidaojiayouzhiyaoqiukedushi,xitongcainengzhongxinqidong。

(7)qichuyingdingqi(yigeyue)jianchaxunengqineiqitiyali,diyushuomingshuyaoqiuchongqiyali 10% shiyingbuchongdanqi,shidanqiyalidadaoshuomingshuyaoqiudeyali。bannianhou,keyijidujianchayicixunengqineiqitiyali。

(8)zaikuaiguandiefayeyaqudongzhuangzhishengchanyunxingguochengzhong,yingzhuyiyouzhidebianhuazhuangkuang,yingdingqi(meijidu)quyanghuayan。ruofaxianyouzhibufuheyaoqiu,jishijinxingjinghuachulihuogenghuanxinyouye,yaoqiuxitongyouyedewurandudengjibaochi nas8 yishang。

(9)jingchangjianchakuaiguandiefayeyaqudongzhuangzhidianyuandedianya,dianyuandianyabodongfanweizaiedingdianyade ±10% nei。tebiezhuyidiancifadegongdiandianya,qigongdiandianyapianchafanweizaiedingdianyade ±10% nei,yiquebaodiancifanenggouzhengchangdongzuo。

(10)jingchangjianchakuaiguandiefayeyaqudongzhuangzhigegeguolvqi。faxianyouyewuranbaojingshi,jishigenghuanguolvqidelvxin。ruofaxianlvxinyouyanzhongsunhuaideqingkuang,bixugenghuanhuoguolvyouxiangyouye。

(1. )kuaiguandiefayeyaqudongzhuangzhitouruyunxinghou,xujingchangdaobendiguanchazhuangzhideyunxingqingkuang,ruoyouguzhangzhishi、louyoudengyichangxianxiangfasheng,zuodaojishichuli。

(12)anshejiguidinghegongzuoyaoqiu,helidiaojiekuaiguandiefayeyaqudongzhuangzhidegongzuoyaliyugongzuosudu。yalifa、diaosufadiaodaosuoyaoqiudeshuzhishi,yingjiangdiaojieluodingjingu,fangzhisongdong。

(13)kuaiguandiefayeyaqudongzhuangzhiyaozhuyifangshi、fangsong、fangfu、fangchenhefangzhuangjideng。

(14)kuaiguandiefayeyaqudongzhuangzhiyouyegongzuowendubudechaoguo 55℃,ruoyouyegongzuowenduchaoguo 55℃ bixuchachuyuanyingeiyijiejue。

(15)kuaiguandiefayeyaqudongzhuangzhidegaoyaruanguanhemifengjianyaodingqigenghuan(yibanwei 2a)。

(16)jingchangjianchayalijidianqihexingchengkaiguandedongzuoshifouzhengchang,ruobuzhengchangyaojishigenghuan。

3 維修要點

kuaiguandiefayeyaqudongzhuangzhiyidanchuxianguzhang,yaojishiweixiu,zaiweixiushiyaozhuyiruxiajidian。

(1)kuaiguandiefayeyaqudongzhuangzhichuxianguzhangshiyaogenjuyeyayuanlituhedianqiyuanliturenzhenfenxi,zhaochuguzhangdian,quedingweixiudefangfa。

(2)duiyeyayuanjianhuoguanluhuomifengjianjinxinggenghuanshi,yingjiangxunengqideyaliyouxiefang,yimianchuxianpenyouhuoshangrendeshigu。

(3)duidianqiyuanjianjinxinggenghuanshi,yingguandiaodianyuan,yimianchuxianchudiandeshigu。

(4)ruoxuyaogenghuanyeyayuanjianhedianqiyuanjian,yingheduixinghao,chamingyuanjianbaoguanshijianjibaoguanhuanjing,yingzhuyiyuanjianneibudelaohuachengdu,biyaoshiyaojinxingchaixi、genghuanbingjinxingxingnengceshi。

(5)ruoxuyaoduiluowenchazhuangfajinxingweixiu,chaixieqianyaolejieqiyuanlihejiegou,chaixieshiyaoshiyongheshidekaikoutaozaisanzhuakapanshangxuankai,zhuangpeishiyeyaoshiyongheshidekaikoutaozaisanzhuakapanshangxuanjin,zhuangpeishiluowenchuhuanyaoshiyongzhongqiangdukechaixieluowensuoguji。

(6)ruoxuyaoduiertongchazhuangfajinxinggenghuan,chaixiefataoshiyaoshiyongzhuanyongdegongju,fouzehennanchaixiede。zaizhuangpeiertongchazhuangfashi,yaotushangrunhuayou,yongluodinghegaibanmanmanyaru,qiewuqiaojidaru。

(7)weixiushiyaojianchayeyayuanjiansuoyongdelianjieluoshuandecaizhijiqiangdushifoudadaoshejiyaoqiuyijiyeyajianshengchanchangguidingdeyaoqiu。fakuaishanggeyeyafadelianjieluoshuanzuihaoyongcelibanshouningjin,ningjinlijuyingfuheyeyafazhizaochangdeguiding。

(8)ruoxuyaogenghuanyeyabeng,zaianzhuangyeyabengshi,yaobaozhengyeyabengyudiandongjiliangzhouzhijiandetongzhouduyuncha、pingxingduyunchafuheguiding,huozhebudayubengyudiandongjizhijianlianzhouqizhizaoshangtuijiandetongzhouduhepingxingduyaoqiu。yaobajinchuyouguanningjin,quebaowuxielou。

4 常見故障處理方法

kuaiguandiefayeyaqudongzhuangzhichangjianguzhangchulifangfajian《biao 1》。

《表 1》 快關蝶閥液壓驅動裝置常見故障處理方法
序號 現象 原因分析 處理方法
1 電源指示燈不亮 1. 檢查電源是否正常
2. 檢查電控箱內斷路器是否合上
3. 檢查電控箱內開關電源是否正常
4. 檢查線路板上的保險絲是否熔斷
1. 輸入正常電源
2. 合上斷路器
3. 更換開關電源
4. 更換保險絲
2 本地操作失效 1. “電源”指示燈是否點亮
2. “本地/遠程”切換開關是否扳到本地擋位
1. 按 1 項處理
2. 切換到本地擋位
3 遠程操作失效 1. “電源”指示燈是否點亮
2. “本地/遠程”切換開關是否扳到遠程擋位
1. 按 1 項處理
2. 切換到遠程擋位
4 壓力表顯示壓力為零 1. 系統是否啟動
2. 油泵電機是否運轉,電機過載或者缺相
3. 放油截止閥是否打開
1. 啟動系統
2. 消除過載因素(油泵或軸被卡住),檢查電源
3. 關閉放油截止閥
5 油缸不動作 1. 檢查操作是否有效
2. 檢查油壓是否正常
3. 檢查電磁閥線圈得電是否正常
4. 檢查電磁閥是否卡住或燒壞
5. 檢查液動閥是否卡住
1. 按 2 項處理
2. 按4項處理
3. 按正確要求配置帶電
4. 拆卸并清洗干凈或更換
5. 拆卸并清洗干凈或更換
6 油液污染   1. 更換油液甚至過濾器的濾芯
7 電機一直運行或超時 1. 檢查上限限壓開關
2. 檢查溢流閥
1. 調整或更換壓力繼電器
2. 重新調節溢流閥
8 “油壓低”而電機不運轉 1. 檢查下限限壓開關
2. 檢查油泵電機及控制回路
1. 調整或更換壓力繼電器
2. 按 4 項處理
9 保壓性能差 1. 檢查電磁球閥是否泄漏
2. 檢查節流截止閥是否關緊
3. 檢查油缸是否有內泄漏
4. 檢查單向閥是否泄漏
1. 修理或更換電磁球閥
2. 關緊節流截止閥
3. 更換油缸的密封圈
4. 更換單向閥
10 油缸停不穩 1. 檢查液壓鎖是否泄漏
2. 檢查油缸是否有內泄漏
1. 修理或更換液壓鎖
2. 更換油缸的密封圈

5 結語

kuaiguandiefayeyaqudongzhuangzhishuyuanquanshebei,lejieqiweihufangfaheweixiuyaodianhenyoubiyao,benwenjieheshijiduikuaiguandiefayeyaqudongzhuangzhideweihufangfayuweixiuyaodianjinxinglezongjie,xiwangnengduidajiayousuobangzhu。


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