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zhaiyao:jianyaofenxilediaojiefadejiegou、yundongjili,zaiduichangguianzhuangchengxujidiaoxiaofangfafenxidejichushang,geichulejingguoshumotuidingde、nenggoumibuchangguifangfabuzudexingzhiyouxiaoxinfangfa。

關鍵詞調節閥機理安裝調校

一、引言

調節閥是工業生產中非常常用和特別重要的控制設備,它工作正常與否直接關系到整個裝置的生產,尤其是化工行業表現得尤為突出。目前,隨著調節閥技術的日新月異,調節閥的形式、品種繁多,功能各異。不同形式、不同功能的調節閥安裝、調校的方式與關鍵控制點都各不相同,本文就現代化生產上常用的調節閥的安裝、調校做一簡析。

二、調節閥的安裝

diaojiefadezhengqueanzhuangfeichangzhongyao,anzhuangdehaohuaishiguanxidaocaozuoxingneng、anquanchengdu、chengbengaodidetoudengdashi。diaojiefabixuyangeanzhaogongyijikongzhixitongyaoqiujinxinganzhuang,yidanfamenchanshengguzhangjiangdaozhihuozai、baozha、zhongdudengyanzhongshiguherenshenshanghai,houguoshixiangdangyanzhongde。xianyiqidongfaweianzhuangshili,jieshaoanzhuangchengxujiyaodian:

1、安裝前檢驗

diaojiefaanzhuangqian,jinhuojianyanshiyigefeichangzhongyaodehuanjie,yiquerendiaojiefadaohuoqingkuangshifoumanzusheji、gongyiheguifanyaoqiu。jinhuojianyanzhuzhongyixiaerxiangneirong:

(1)faxiu、faneijianguigejianyan:faxinghao、faxingshi、gongchengzhijing、fazuochicun、faxinxingshi、faticaizhi、faxincaizhi、fazuocaizhi、liuliangtexing、xieloudengji、cv zhi、falanbiaozhundengjichicunjimifengxingshidengzhibiao,zhiyaoqizhongyixiangneirongbuheyaoqiujunyingzhengdeshejidequeren。

(2)zhixingjigoujianyan:zhixingjigouxinghao、xingshi、zuoyongfangshi、danhuangfanwei、gongqiyalideng。

(3)dingweiqijianyan:dingweiqideshuruxinhao、qiyuanyali、fangbaodengji、dianqiheqiyuanjiekouchicundeng,qizhong,fangbaodengjibudediyushejidengji。

(4)附件檢驗:根據調節閥的設計技術要求仔細清理各項附件,如過濾減壓閥、閥位開關、電磁閥、手輪機構、專用工具等。

yishanggexiangneirongdejianyankeyitongguoshijue、qingli、jiliangqiju、chakanmingpaiyijizhuanyongjianceshouduan(rufalanjiluoshuancaizhiketongguoguangqianfenxilaijianbie)dengfangfalaishixian。

2、安裝原則

(1)qidongdiaojiefaanzhuangweizhi,judimianyaoyouyidinggaodu,fadeshang、xiayaoliuyouyidingdekongjian,yibianjinxingfadechaixiehexiuli。duiyuzhuangyouqidongfamendingweiqiheshoulundediaojiefa,bixubaozhengcaozuo、guanchahediaozhengfangbian。

(2)diaojiefayinganzhuangzaishuipingguandao,xiangduiyuguandaoshang、xiachuizhi,yibanyaozaifadexiaduanjiazhicheng,baozhengwendingkekao。duiyuteshuchanghe,xuyaodiaojiefashuipinganzhuangzaishuzhideguandaoshangshi,yeyingjiangfatijinxingzhicheng。anzhuangshi,yaobimiangeidiaojiefadailaifujiayingli,ruguandaoyufatibutongxinhuofalanbupingxingdeng。

(3)diaojiefaqianhouweizhiyingyouzhiguanduan,zhiguanduanchangdubuxiaoyu 10 beideguandaozhijing(10d),yibimianfadezhiguanduantaiduaneryingxiangliuliangtexing。

(4)diaojiefadekoujingyugongyiguandaobutongshi,yingcaiyongyijingguanlianjie。xiaokoujingdiaojiefaanzhuangshi,kecaiyongluowenlianjie。fatishangliutifangxiangjiantouyuliutifangxiangyizhi。

(5)fayaojiapangtongguandao,mudeshibianyuqiehuanhuoshoudongcaozuo,kezaibutingcheqingkuangxiaduidiaojiefajinxingweihuhuojianxiu。

(6)yibandiaojiefagongzuohuanjingwenduzai -30~+60℃,xiangduishidubudayu 95%.suoyi,anzhuangshiyingzhuyilikaigao、diwenfusheyuan(gao、diwenguandao,jiareludeng)。yindiaojiefadebomohemifenghuandengxiangjiaozhipinlingjian,zaidiwenshiyiyinghuabiancui、gaowenshiyilaohua。

(7)diaojiefazaianzhuangqianyaochediqingchuguandaoneiyiwu,ruwugou、hanzhadeng。anzhuanghouyongchangwenshuijinxingshiyan,shiyanshiyingjiangfaquanbudakaihuopangtongfadakai。shiyunxingshiyingzhuyifatiyuguandaolianjiechudemifengxingneng。

3、安裝形式及方位

調節閥安裝位置比較圖(圖 1)
圖 1 調節閥安裝位置比較圖

diaojiefadeanzhuangtongchangqingkuangxiayouyigediaojiefazu,ji,shangyoufa、panglufa、xiayoufahediaojiefa。tu 1 geichulediaojiefachangyongdeliuzhongzuhexingshi,bingduigezidetedianjinxingleshuoming。

yingzhuyideshiqieduanfa(shangyoufa、xiayoufa)hepanglufadeanzhuangyaokaojinsantong,yijianxiaosijiao。

tongchangdiaojiefayaoqiuchuizhianzhuang。zaimanzubulechuizhianzhuangshi,duifalanyongsigeluoshuangudingdediaojiefakeyiyouxiangshangqingxie 45 du、xiangxiaqingxie 45 du、shuipinganzhuanghexiangxiachuizhianzhuangsigeweizhi。duifalanyong 8 geluoshuangudingdediaojiefazekeyiyou 9 geanzhuangweizhi,fenbiexiangge 22.5 du。

zaizhexieanzhuangweizhizhong,zuilixiangdeshichuizhixiangshanganzhuang,yinggaiyouxianxuanze;xiangshangqingxiedeweizhiweiqici(yicishi:22.5 du、45 du、67.5 du);xiangxiachuizhianzhuangweizaiciweizhi;zuichadeweizhishishuipinganzhuang,tayujiejinshuipinganzhuangdexiangxiaqingxie 67.5 du,ciweizhiyibanbucaina。

三、調節閥的調校

xinanzhuangdeqidongdiaojiefaanzhuangzhiqianyingjinxingdantidiaoxiao,diaoxiaoyingdadaodexingnengzhibiaowei:

jibenwucha:±1.5%;huichengwucha:1.5%;bulingminqu:0.6%。

閥門定位器作為氣動調節閥的工具,對調節閥的使用起著決定性作用,定位器調校質量的好壞直接影響調節閥的使用。閥門定位器與閥門配套使用,組成一個閉環控制系統。該系統主要由磁電組件、零位彈簧、擋板、氣動功率放大器、調節閥、反饋杠桿、量程調節機構、反饋彈簧等組成。其系統方框圖如圖 2 所示圖中。

系統框圖(圖 2)
圖 2 系統框圖

tuzhong:k0——lingweidanhuangdanxingxishu;k4——fankuidanhuangdanxingxishu;k1, k2, k3, k5, k6, kv——cidianzujian、dangban、fangdaqi、liangchengdiaozhengjigou、fankuiganggan、diaojiefadefangdaxishu。

youtu(1)kedechugaixitongdeshuxuemoxing:

設:令 Kc=K2*K3*Kv——(1)
Kf=K4*K5*K6——(2)
則有
L=Kc(K0*H+K1*I)/(1+Kc*Kf)=[Kg*K1/(1+Kg*Kf)]*I+Kc*K0*H/(l+Kc*Kf)——(3)
式中
I——輸入電流
H——調零彈簧長度
L——調節閥的行程
Kg——輸入電流所產生的電磁力矩
Kf——反彈黃所產生的反饋力矩
Kc——零位彈簧所產生的調零點力矩

genjushi(3)kedechudingweiqidediaolingmoxing:kc*k0*h/(1+kg*kf)

shengchanzhongchangyongdediaoxiaoyuanlihefangfashi:jiangshi(l),shi(2)dairu(3)shidexingchengmoxingwei:

l=k2*k3*kv*(k0*h+k1*i)/(1+k2*k3*k4*k5*k6*kv)——(4)

diaoxiaobuzoushi:

(1)shifaganweiyuxingchengzhongdian,diaozhengdingweiqiyufankuiganggancheng 90 dujiao,bingjiangluodingguding;

(2)jianglingdian、liangchengfenbiezhiyuzhongjianweizhi;

(3)shuru 4ma.dc xinhao,shidiaojiefakaishidongzuo,diaojielingdian,shilingdiandadaoyaoqiu;

(4)shuru 20ma.dc xinhao,kanqixingchengshifoudadaoyaoqiu,ruomeidadao,zediaoliangcheng,shiqidadaoyaoqiu;

you(3)、(4)kezhi,diaolingdiankegaibian h,diaoliangchengyouhuiyingxianglingdian,suoyi,diaolingdianhediaoliangchengshixianghuzuoyongxianghuyingxiangde。yinci,cizhongfangfayoushihennanxiaozhundingweiqi,zheshiyinwei:yibanqingkuangxia,lingweidanhuanggongzuozaixianxingquyu,qichangdubianhuafanweiyouxian,diaozuichengjigoudekongjianweizhishoudaoxianzhi,suoyi,diaolingdanhuangchangduheliangchengdiaozhengjigoudefangdaxishuzhiyejianghuishoudaoxianzhi。cishi,ruguodandiaoyitaidiaojiefadefangdaxishu(hendahuohenxiao),jiuhennanjiangqidingweiqixiaozhun。eryoumoxing(4)keyikanchu:keyidiaojiedecanshuhuanyoulingweidanhuangdedanxingxishuhefankuiganggandeyouxiaochangdu;yingyongzhongkeyijianglianjiezaifaganshangdexiaodingkaojinfamendingweiqi,zheyangjiujiangfankuiganggandeyouxiaochangdusuoduan,shi l zengda,xingchengzengda,fanzhizexingchengjianxiao。

四、結束語

diaojiefazaidiaojiexitongzhongshizhixingjigou,tadongzuokekaoyufoujuedingzhuxitongdechengbai。yigediaojiefacongshejidaoshiyongyaojinglijiagong、zhuangpei、jianyan/shiyan、xiaoshou、caigou、jinchangjianyan、anzhuang、diaoxiaodenghuanjie,neimejuedingjieguodeshijinruxianchangdehousangehuanjie。sangehuanjiezhong,diaoxiaoyoushizhongzhongzhizhong,suoyibahaosanguanjiunengbaozhengdiaojiefadekekaoyunxing。


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