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(本篇文章上篇:《蝶閥關閉故障分析及處理方法(上篇)》)

3.3 在蝶閥關閉過程中關閉蝶閥所需力矩小于軸承處所受到的摩擦阻力矩

為了防止泥沙淤積妨礙閥門開啟,蝶閥下緣逆水流關閉,動水力矩 M 總是趨向使活門關閉,活門上的動水壓力沿水流方向的分力 p 順水流方向,垂直分力 P1 方向向上。

huomenguanbishi,shuiwanquanjingzhi,huomenshangchengshoujingshuiyali。youyuhuomenshang、xiadeweizhichayi,jingshuiyalidezuoyongzhongxinzaihuomenzhongxinxianyixia,zheyang,duiyuwozhoudiefahuomen,jiuchanshengleshihuomenzhuandongdejingshuiliju。

zaiqinshanshuidianzhanzhong,diefachuyujiejinquanguandeweizhibunengzhengchangguanbi。

閥門操作中,操作機構各轉動銷軸處均存在摩擦力和摩擦力矩。其中,閥軸與軸瓦間的摩擦力和力矩是主要的,其數值占據總的摩擦力降摩擦力矩的絕大部分。

genjushejigongkuang,fazhouhezhulvqingtongdemocayinshuyibanqubai μ=0.15,suoyizaizuigaoshuitou 121.5m shi,diefakeyikaobenshenpeizhidezhongchuijinxingzidongguanbi。eryaochuxiandiefabunengzidongguanbixianxiangbixudetiaojianshi μ>0.27。yincikeyidechuyixiajielun:

qinshanshuidianzhan #1、#2 diefazaiyunxing 2 nianyihou,zaiguanbishichuxianlebutongchengdudeguanbudaoquanguanweizhidexianxiang。womenfenxirenwei,chuxianzhezhongqingkuangdeyuanyinyouyixia 2 dian:

(1)diefazaijingguo 2 nianduodeyunxinghou,fazhouhezhouchengzhijianyoukenengchuxiannishachendian,daozhifazhouhezhouchengzhijiandejianxijianxiao,zhouchengmocayinshuzengjia。zaifamendeguanbiguochengzhong,danghuomenjiejinquanguanweizhishi,huomenshang、xiayouzhijianxingchengyigeyacha,zhegeyachahuizaifazhoushangchanshengyigezuaiguanbideliju,zhegezulijuyuzhouchengdemocayinshuchengzhengbi,dangzulijudayufamenguanbilijushihuichuxianshangshuxianxiang。

(2)zhouchengjingguoyiduanshijianyunxinghou,zhouchengrunhuamiankenengyoufushi,zhouchengchuxianlemosun,mocayinshuzengjia,yehuidaozhishangshuxianxiang。

4 處理方法

(1)gaibianguanbidiefadecaozuochengxu。zaiguanbidiefadetongshi,dakaipangtongfa,zaiguanfajieshuhou,zaiguanbipangtongfa。zheyang,keyirangdiefazaiguanbiguochengzhongqian、houshuiyashizhongpingheng,xiaochuleguanfaguochengzhongdiefashang、xiayouzhijiandeyacha,dadajiangdileguanbishidemocazuli,shiguanfanengshunlijinxing,erqiekeyijianshaozhouchengrunhuamiandemosun,zengjiadiefazhouchengdeshiyongshouming。

(2)xianpeizhide 2 gezhongchuidecemiangeyuliuyou 4 ge m30 deluokong,kezaizhongchuishangjiayixiegangban,ranhouyongluosijingu。zheyangjiuzengjialezhongchuidezhiliang,congerzengjiadiefaguanbishidezhongchuiliju,shidiefazaizhouchengmocaxishuzengdashiyenengshunliguanbi。

zaiyishang 2 zhongfangfazhong,ruguocaiyongdi 2 zhongfangfajinxinggaizao,diefakezaiyiduanshijianneibijiaoshunlidizixingguanbi,danyunxingshijianchangleyihou,suizhunishazaifazhouhezhouchengzhijiandechendianhezhouchengrunhuamiandejinyibumosun,mocayinshuzengdayinqimocazuliyuelaiyueda,diefayoukenengyoubunengzixingguanbi,shenzhixugenghuanxinzhoucheng。yinci,zaikaolvdaochulishangshuwentidenanduhedianzhandeanquanjingjiyunxing,zaicaiyonglexiugaidiefaguanbiliuchengdefangfa,rutu 1 suoshi(tuzhonghuiseweigaijinzengjialiuchengbufen)。

改進后的蝶閥關閉流程圖
圖 1 改進后的蝶閥關閉流程

5 實際應用情況

qinshanshuidianzhandiefaguanbiliuchengjingguogaijinhou,zaiguanbidetongshikaiqipangtongfa,duifahouchongshui。diefazaishang、xiayouwushuiyachadeqingkuangxiaguanbi。zaiciguochengzhong,jibenxiaochulezuoyongzaihuomenshangdejingshuiliju,tongshi,dadajianxiaolefazhoudemocaliju。shijianbiaoming,gaijinhoudiefayunxingwending,zixingguanbizhengchang,guanbixiaoguolianghao。

tongshikaolvdaojizuguosushi,yindiaosuqizhupeiyafajudong,xushidiefaguanbilaifangzhijizuguosu。zaizhezhongfangshixia,weifangzhiyouyuguanbidiefashikaipangtongfazaochengjizuzhuansushenggao,zaiguosubaohuzhuangzhidongzuoyouguanluzhong,bingyiyouguanzhidiaosuqishigudiancifa。dangguosubaohuzhuangzhidongzuoshi,shigudiancifayedongzuo,diaosuqizhupeiyafakuaisuchaoguancedongzuo,guanbidaoxie,fangzhijizufeiyi。

6 結束語

yingyonggaiguanbiliuchengdediefa,youyuzaiguanbishidiefaqian、houshuiyapingheng,shoujingshuiyalijiaoxiao,dadajianshaolefazhoudemocaliju,yejianxiaolediefadezhuzhoujizhouchengdemosun,yanchanglediefazhuzhoujizhouchengdejianxiuzhouqi,tongshiyebaozhenglediefadewendingyunxing,quebaoleshuidianzhandeanquanjingjiyunxing。

ruozaihannishaliangjiaodadeshuidianzhanshiyongdiefa,zuihaobuyaocaiyonggaizhongdaiziguanbizhuangzhidediefa,yinweicaiyongdaiziguanbizhuangzhidediefa,yunxingshijianchangleyihou,suizhunishazaifazhouhezhouchengzhijiandechendianhezhouchengrunhuamiandemosun,zhouchengmocayinshuzengdayinqimocazuliyuelaiyueda,diefazuizhongjiangbuhuizixingguanbi。zhebijiangzengjiadiefajianxiucishu,jianshaodiefashiyongshouming,buliyushuidianzhandeanquanjingjiwendingyunxing。

(quanwenwan)


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