山西快乐十分APP下载

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沪工阀门

上海沪工阀门厂(集团)有限公司

ZHAIYAO:DUIDIEFASHEJIYINGZHUYIDELIUZU、QIANGDU、GANGDUHEJIEGOUDENGWENTIJINXINGLELUNSHU,DUIDIEFAXUANYONGSHIYINGKAOLVDEWENDU、YALI、MIFENGJICAILIAODENGWENTITICHULEJIANYI。

关键词:蝶阀;设计;选用;

1 概述

蝶阀山西快乐十分APP下载是给水排水管路系统中的一个重要装置随着工业技术的进步,对蝶阀的结构及性能提出了不同的要求。因此,在设计及选用时应根据工况条件,对其类型、材料和连接形式等做出合理的选择。

2 设计

2.1 结构

DIEFADEGUANBIJIAN(DIEBAN)ZAIJIEZHIZHONGJIAN,SHEJISHIYINGKAOLVQIDUILIUZUDEYINGXIANG。

  1. 关于大口径蝶阀蝶板的结构,AWWA C504(美国给水工程协会标准)规定,蝶板不应有横向筋,其厚度不得大于阀杆直径的 2.25 倍。
  2. 蝶板的迎水面和出水面应呈流线型。
  3. 内部螺钉不能凸出在蝶板外面,以免增加迎水面积。

山西快乐十分APP下载 GUOWAIMOUGONGSISHENGCHANDEDIEFAWEILEJIANXIAOLIUZUJIANGDIEBANZUOCHENGTIEBINGXING,YEYOUGONGSIJIANGXIAOXINGDIEFADIEBANZUODEHENBO,ERSHUIDIANGUANWANGSHANGYONGDEDIEFAZAIQUANKAIWEIZHISHIDIEBANYOUDAOLIUJIAN,DOUSHIWEILEJIANXIAOLIUZU。WOGUO JB/T 53171-1999 BIAOZHUNYEJIANGGUOJIBIAOZHUN ISO/TC 153/SC1GT8-37DELIUZUHELIULIANGXISHU(JIAN《BIAO 1》)LIERUQIZHONG,ZHEISHUOMINGLIUZUSHIYIGEZHONGYAOZHIBIAO。

《表 1》蝶阀的 C (Kv)、K (ξ) 值
公称通径 DN
mm
公称压力 PN/MPa
小于 16 20.25
C (Kv) K (ξ) C (Kv) K (ξ)
40 50 64 40 2.56
50 80 1.33 45 2.37
65 150 1.27 120 1.98
80 250 1.05 200 1.64
100 400 1.00 300 1.78
125 650 0.92 450 1.93
150 1000 0.81 800 1.26
200 1900 0.71 1500 1.14
250 3100 0365 2500 1.00
300 4700 0.59 3600 1.00
350 6700 0.53 5400 0.82
400 9000 0.51 7000 0.84
450 11500 0.50 9500 0.73
500 14000 0.50 12000 0.69
600 21000 0.47 18000 0.64
700 30000 0.43 25000 0.61
800 41000 0.39 35000 0.53
900 53000 0.37 46000 0.50
1000 67000 0.35 58000 0.48
1200 100000 0.35 87000 0.44

2.2 橡胶密封圈

YOUSHIXIANGJIAODIEFASHIYONGSHOUMINGJIAODUAN,ZHEIYUXIANGJIAOZHILIANGJIMIFENGMIANKUANDUYOUGUAN。XIANGJIAOMIFENGDIEFADEMIFENGQUANYINGXUANYONGYOUZHIDEXIANGJIAOCAILIAOZHIZAO,ZAIYAZHICHENGXINGSHIYINGZUNSHOUGONGYIGUICHENG,BUNENGRENYITIGAOLIUHUAWENDU,SUODUANSHIJIAN,FOUZERONGYIZAOCHENGMIFENGQUANLAOHUAHEKAILIE。YUXIANGJIAOMIFENGQUANPEIHEDEJINSHUMIFENGMIANYINGYOUZUGOUDEKUANDU,FOUZEXIANGJIAOMIFENGQUANBUYIQIANRU。LINGWAI,FATIJIDIEBANDEXINGWEIGONGCHA、DUICHENGDU、JINGDU、GUANGJIEDU、MIFENGQUANDEYADANLIANGDENGYEYINGXIANGXIANGJIAOMIFENGQUANDESHIYONGSHOUMING。

2.3 刚度

山西快乐十分APP下载 GANGDUSHIDIEFASHEJIZHONGDEZHONGYAOWENTI,TAYUDIEBAN、FAZHOUJILIANJIEDENGYINSUYOUGUAN。

山西快乐十分APP下载 (1)FAZHOUCHICUN AWWA C504 ZHONGGUIDINGLEFAZHOUCHICUN。FAZHOUCHICUNDABUDAOYAOQIU,KENENGCHUXIANGANGDUBUGOU,FANXIANGMIFENGXIELOU,KAIQILIJUDADENGXIANXIANG。ZHOUDEGANGDUYU 1/EI YOUGUAN,YEJIUSHISHUOYAOTIGAOGANGDUJIANXIAOBIANXINGWENTIYINGGAICONGTIGAO EI ZHESHOU。E SHIDANXINGMOLIANG,YIBANGANGCAICHABIEBUDA,XUANYONGHAODECAILIAODUIGANGDUYINGXIANGBUDA。I SHIGUANXINGJU,YUZHOUDEJIEMIANCHICUNYOUGUAN。FAZHOUDECHICUNYIBANANWANNIUHECHENGJISUAN,TABUJINYUNIUJUYOUGUAN,ERQIEZHUYAOYUWANJUYOUGUAN,YOUQIDAKOUJINGDIEFAWANJUBINIUJUDADEDUO。

山西快乐十分APP下载 (2)ZHOUKONGPEIHE AWWA C504DEJIUBANBENZHONGGUIDING,DIEFAZHOUSHIYIGENZHITONGDEZHENGZHOU。1980 BANBENYIHOU,TICHUKEYIZUOCHENGLIANGDUANDUANZHOU。AWWA C504JI GB12238 GUIDING,ZHOUYUKONGDEQIANRUZHANGDUYINGWEI 1.5d。RIBENDIEFAZHOUXIANGCHICUNZHONGFATINEIBIANYUANYUDIEBANZHICHENGDUANZHIJIANDEJIANXI(C ZHI)JICHUGUIDING,YIBANYUKOUJINGDAXIAOYOUGUAN,ZAI 25~45mm ZHIJIAN,YEJIUSHIJINLIANGJIANXIAOZHOUZHICHENGJIANDEJULI(C ZHI),CONGERJIANXIAOZHOUDEWANJUHEBIANXING。

(3)DIEBANJIEGOU DIEBANJIEGOUXINGSHIYUGANGDUYOUZHIJIEGUANXI,YINCICHUPINGBANXINGWAIDUOZUOCHENGGUOXINGHUOHENGJIAXING。ZONGZHISHIWEILEZENGDADUANMIANDEGUANXINGJU,YITIGAOGANGDU。

(4)FATIJIEGOU DAKOUJINGDIEFAFATISHEJIZHONGYECUNZAIGANGDUWENTI。YIBANYOUQUANJINHEHENGJIN,SHIJISHANGHENGJINZHISHIZENGJIAWENDINGXING,BUYITAIDUO,ZHUYAOSHIQUANJIN。RUGUONENGJIA∩XINGJINZEDUIGANGDUGENGYOULI,DANCUNZAIGONGYIXINGCHADEWENTI。

2.4 自润滑轴承

DIEBANSHANGSUOSHOUJIEZHIYALIDABUHUOQUANBU(FANXIANG)SHITONGGUOZHOUCHUANDIDAOZHOUCHENGSHANGQUDE,YINCIZHOUCHENGQIDAOFEICHANGZHONGYAODEZUOYONG。GUOWAIDIEFAYOUDEZHUANDONGHENQINGQIAO,XIAOKOUJINGFAMENYIGESHOUZHIDOUNENGZHUANDONG,ERGUOCHANDIEFAYOUDEZHUANDONGQUEHENCHENZHONG,ZHEICHULEYUTONGZHOUDU、DUICHENGDU、JIAGONGJINGDU、GUANGJIEDUHETIANLIAODEZHILIANGYOUGUANZHIWAI,HENZHONGYAODEYIGEYINSUJIUSHIZHOUTAOCAILIAODERUNHUAXING。AWWA C504 BIAOZHUNTICHU,FATIZHONGANZHUANGDEZHOUTAOHUOZHOUCHENGYINGSHUYUZIRUNHUACAILIAO,ZHOUTAOCUNZAIJIANMORUNHUAWENTI,BUYUNXUXIUSHI。MEIYOUZHOUTAO,JISHIFAZHOUSHIBUXIUGANG,FATIYEYOUXIUSHIJIJIAOHEZHANZHEWENTI。CAIYONGZHOUTAOHAIKEYIZENGJIAGANGXING。

2.5 轴与蝶板的连接

XIAOKOUJINGDIEFADEZHOUYUDIEBANCAIYONGJIANHUOHUAJIANLIANJIEWEIYI,YEKEYICAIYONGDUOBIANXINGZHOULIANJIEHUOXIAODINGLIANJIE,DAKOUJINGDIEFADEZHOUYUDIEBANDUOCAIYONGJIANHUOZHUIXIAODENGLIANJIE。MUQIANZHOUYUDIEBANCAIYONGXIAOLIANJIEDEBIJIAODUO。ZAIELIEDEGONGKUANGTIAOJIANXIALIANJIEXIAOYOUSUNHUAIXIANXIANG,ZHEIZHUYAOSHIYOUYUZHIZAODEYUANYIN,QIZHONGWENHEJINGDUBUHAO,XIAOZICHICUNXUANZEBUHESHI,XIAOZIYINGDUBUGOUHUOCAIYONGCAILIAOBUHESHIDENGYINGYINQIZHUYI。DAXINGDIEFADEZHOUYUDIEBANKECAIYONGTESHUDEFANGFAJINXINGLIANJIE。

2.6 结构长度

蝶阀的结构长度向短系列发展,但这样的做法要慎重。因为结构长度太短对强度有影响。国际标准对法兰蝶阀短系列结构长度做出了规定,但是压力较高的阀门结构长度不宜改短,否则会出问题,尤其是铸铁等脆性材料。

3 选用

3.1 类型

蝶阀有单偏心、斜板式、中线型、双偏心和三偏心等不同结构。介质压力通过蝶板作用在阀轴及轴承上,因此在高压小口径流阻很大时,其轴径和蝶板厚度都相应增加,如果采用闸阀球阀截止阀山西快乐十分APP下载,从密封及流阻等方面分析比采用蝶阀合适。

近几年来,在水系统中软密封闸阀山西快乐十分APP下载的出现改善了闸阀容易沉淀泥沙的缺点,其流阻比较小,可以在线维修,用于中小口径非常合适,因此逐渐得到了应用。

3.2 密封副

金属密封蝶阀的主要优点是密封可靠、寿命长、耐高温,不易损坏和撕裂,承压能力高。因此近些年来应用较多,尤其用于工程系统的关键部位。橡胶软密封蝶阀如果设计制造优良可以得到很好的密封,而且大口径容易做到在线换圈。但是橡胶存在老化问题,只能用于温度不高的工况条件下,因此广泛应用在自来水及供水系统。

GUOWAIJINSHUMIFENGDIEFAYEYONGYUHUODIANCHANGDEBENGZHAN、NINGQIQI、CHOUQIXITONGJIHUANREXITONG,HEDIANZHANHAIYONGYUYALIQIAOGELI、PENLINXITONGJIYANSHUIDENG,SHIYOUJINGLIANXITONGZHONGDECHUYOUGELI、ZHENGQIGONGJIFA、TUOLIUXITONGHEWEIQICHULI、RELIEJIEJICUIHUADANYUANZHONG。HAIYOUSHIYOUHUAGONGCHANG、SHENLENG、JIANGYEHEZAOZHIDENGXITONG。

DUIYUZHONGWENZHONGYAGONGKUANGXUANYONGJINSHUMIFENGDIEFAJIAOHAO。DUIYUYAOQIUFAMENKEKAOXINGGAO,SHOUMINGZHANG,ZHANGQIBUYIGENGHUANDEDIFANG,YEYINGGAIXUANYONGJINSHUMIFENGDIEFA。

山西快乐十分APP下载 DUIYONGYUCHANGWENSHUIDEFAMEN,RUGUOBUSHIYAOQIUHENGAO,ZHANGQIBUGENGHUANHUOGENGHUANBUFANGBIANDEDIFANG,ZEYICAIYONGRUANMIFENGJIEGOUDEDIEFA。RUGUOXIANGJIAOZHILIANGNENGGOUBAOZHENG,SHUIYONGDAKOUJINGDIEFARENGYINGYIXIANGJIAOFAZUODIEFAWEIZHU。

4 结语

山西快乐十分APP下载 XINGONGYIJIXINCAILIAODEBUDUANCHUXIAN,JIANGTIGAODIEFADEJIEGOUXINGNENG,KUODADIEFADESHIYONGFANWEI,BINGDUIDIEFADESHEJIHEXUANYONGTICHUGENGXINDEYAOQIU。


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