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閥桿是帶動啟閉件使閥門開啟和關閉的重要部件,因為閥桿是可動件。所以是最易產生外漏的部位。因此,閥桿密封對于閥門來講是非常重要的。

fagandemifengtongchangyongyasuotianliao。yasuotianliaoshizhiyarutianliaohanneishifaganzhouweimifengderuanzhicailiao。tianliaozuoyongyuhengxiangzhichengmianshangdeyaliruguodengyuhuogaoyujiezhiyali,erqieyezuyinengshizaihengxiangmianshangdexielougoubihe,zetianliaojiunengduijiezhiqidaomifeng。

yajintianliaoyagaisuochanshengdemifengyalishitianliaoxianghengxiangkuozhang。ruguotianliaochuandiyalidefanggongyujiezhixiangtong,shishijiayutianliaoduanmiandeyalijiuzaihengxiangzhichengmianshangchanshengxiangtongdeyali。yinci,tianliaoshoudaotianliaoyagaidejin,tianliaohengxiangdeyalijingchangyaobijiezhiyaligaochuyoutianliaoyagaishijiadeyigeyalizhi,zheshijiuhuizidongqidaomifengzuoyong。

1. 壓縮填料的結構

dabufenyasuotianliaoyouyukaolvdaoshimiandexingnenggudoucaiyongtadexianweizuojiliao。tajibenshangbushouduoshujiezhi、wenduheshijiandeyingxiang,shiyizhonghaodedaoreti。shimiandequedianjiushirunhuaxingcha,yincibixutianjiabufangaishimianxingnengderunhuaji,rushimofenheyunmufen。youyuzhezhonghunhewurengjuyoushentouxing,guhuanyaojiazhuyetirunhuaji。

jusifuyixijuyouzhousuolvzuixiao、suoxiaolvzuidi,qiejuyoumocaxishuxiaodetexing。duiyudabufendefushixingjiezhijuyoujiaogaodekangfuxingneng。jusiyixitianliaozaitianliaochudegongzuowendu -150~260℃ zhijian。zaizheyiwendufanweinei,tashiyizhonggaoxingneng、duoyongtudefagantianliao。

rouxingshimojuyounaigaowendetexing,tahuanjuyoumocaxishuxiaoqienaidabufenfushixingjiezhi,zaitianliaochudegongzuowendukeda 600℃,gudianzhan、shihuadengbumengaowenchudefamendoushiyongrouxingshimotianliao。

2. 填料對不銹鋼閥桿的腐蝕

buxiugangfagan,tebieshiyongge 13 xigangzuodefagan,yutianliaojiechudebiaomianjingchangshoudaofushi。zhezhongfushichangfashengzaishiyongqiandezhucunjieduan,zheshiyouyujingguoshuiyashiyanhoudetianliaobeishuibaohedeyuangu。ruguozaishuiyashiyanhoulijitourushiyongjiubuhuifashengfushi。conglilunshangjiang,chuyushiruntianliaozhizhongdebuxiugangfaganqisuoyibeifushi,shiyouyubeitianliaosuobaoweidefaganbiaomianchuzaituoyanghuanjingzhizhongdejieguo。zhezhonghuanjingyingxianglejinshudehuohuayudunhuatexing。buxiugangyanghuabaohucengbiaomiandequeyangmingandianshangchanshenglexuduoxiaodeyangji,zhexieyangjiyufashengyangjizuoyongdedaliangcanliudedunxingjinshuyiqi,jiushijinshuneibuchanshengyuandianchidezuoyong。tongchangyongyutianliaozhongdeshimozuoweiyangjicailiaozuoyongyufagangangdeyinjichangzengqiangleyuandianchidianliuqiangdu,congerdadajiajuleduiyuanshifushidiandefushi。

3. 閥桿密封填料的形式

唇形填料

chunxingtianliaoyouyuqichunpianrouruan,zaijiezhiyalizuoyongxiahuihengxiangkuozhangjintiezaidangbishang,zhezhongkuozhanxingtianliaokeyishiyongzaiyasuotianliaozhong,bunengyongxiangduijiaoyingdecailiao。chunxingtianliaodequedianshiqimifengzuoyongzhishidanfangxiangde。

dabufenyongyufagandechunxingtianliaoshiyongchunjusifuyixihuotianchongjusifuyixizhizaode。danyeyoushiyongxianweijiagudexiangjiaohuopigezhizuode。zhuyaoshiyongzaiyeyafangmian。dabufenyongzuofagandechunxingtianliaozuochengvxing。zheyangjibianyuanzhuangyoubianyukuochong。

擠壓式填料

jiyashitianliaodemingchengshiyongyongyu o xingquanyileidetianliao。zhezhongtianliaoanzhuanghouqicemianshoudaojiya,jiezhucailiaodedanxingbianxingbaochiqicexiangdeyufuheli。dangjiezhicongdibujinrutianliaoqiangshi,tianliaojiuxiangfaganyuzhichengzuozhijiandekongxiyundong,congerdusailexieloutonglu。dangtianliaoqiangyalizhongxinxiajiangshi,tianliaoyouzhongxinhuifuqiyuanxianxingzhuang。

止推填料

zhituitianliaoyoutianliaohuanhuoyouzhuangzaifagaihefagantaijianjiandedianquanzucheng,fagankeyixiangduitianliaohuanzuozijidezhouxiangyidong。qishidefaganmifengkefufuzhuzhoufengruhuosuotianliaolaitigong,yekeyoudanhuanglaitigong,gaidanhuangposhifagantaijiandingzhuzhituitianliao,erhoudejiezhiyalijiukeposhifagantaijiangengjinmidiyutianliaojiechu。

隔膜閥閥桿的密封

gemofafaganshiyourouxingqiechengyadefameigailaimifeng,gaifagaishifaganyuguanbijianxianglian。zhezhongmifengzhiyaogemobushixiao,jiunengbimianrenhejiezhitongguofaganxiangdaqixiechu。gemodecailiaoyifamendeyongtubutongerbutong,keyongbuxiugang、suliaohuoxiangjiaodeng。


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