苹果彩票app下载

苹果彩票app下载

滬工閥門新聞中心

苹果彩票app下载 | 2011-12-13

摘要:球閥,從其特性上來說,具有一般閥體無法比擬的優勢,從技術上看,球閥全通徑、大流量、低流阻、開關方便,其技術指標逐步從低壓、常溫發展到高壓、高溫,逐步取代閘閥截止閥苹果彩票app下载等一些功能受限的閥門。特別是氣一固、液一固二相流介的增多,更促進球閥應用范圍廣泛的提升。最近 10 年,高溫、高壓、耐磨、耐沖刷球閥迅速發展,具有廣泛的發展潛力,在目前階段,已經充分顯現。

“十一五”規劃的進一步落實,國家一批大型工程項目的興建,西氣東輸等工程項目帶動了泵閥產業的快速發展,尤其推動了高端泵閥產品的國產化進程,這本身對于國內泵閥企業將是新的機遇和挑戰。其中,金屬密封球閥己經作為一個高端技術產品,涌入球閥熱門市場領域。經過多年的持續發展,我國已經進入到工業化發展的加速期,并將繼續在發展過程中進行產業結構的調整,以滿足裝備制造設備對相關配套產品的需求。本文重點介紹了球閥的基本原理,尤其提出直埋式全焊接球閥的產品優勢,并闡述直埋式球閥與金屬密封球閥良好的發展前景。

上篇球閥基本原理篇

一、球閥的技術特點

球閥用帶圓形通孔的球體作啟閉件,球體隨閥桿轉動,以實現啟閉動作的閥門。球閥是由旋塞閥演變而來,又稱球形旋塞閥。球閥的啟閉件作為一個球體,利用球體繞閥桿的軸線旋轉 90° 實現開啟和關閉的目的。

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QIUFASHIBENSHIJI 50 NIANDAIWENSHIDE,ZAIDUANDUANDE 30 DUONIANLI,SHIJINSHIJINIANLAIFAZHANZUIKUAIDEFAMENPINZHONGZHIYI。TEBIESHIZAIMEI、DE、RI、FA、YI、XI、YINGDENGGONGYEFADAGUOJIA,QIUFADESHIYONGFEICHANGGUANGFAN,SHIYONGPINZHONGHESHULIANGRENGZAIJIXUKUODA,BINGXIANGGAOWEN、GAOYA、DAKOUJING、GAOMIFENGXING、CHANGSHOUMING、YOULIANGDEDIAOJIEXINGNENGYIJIYIFADUOGONGNENGFANGXIANGFAZHAN,QIKEKAOXINGJIQITAXINGNENGZHIBIAOJUNDADAOJIAOGAOSHUIPING,BINGYIBUFENQUDAIZHAFA、JIEZHIFA、JIELIUFA。TAZAIHANGTIAN、SHIYOUHUAGONG、CHANGSHUGUANXIAN、QINGGONGSHIPIN、JIANZHUDENGXUDUOFANGMIANDOUDEDAOLEGUANGFANDEYINGYONG。ZHESHIYINWEI,QIUFAYUQITAFALEIXIANGBI,JUYOUXUDUOTUCHUDEYOUDIAN,ZHUYAOTEDIANRUXIA:

1、球閥流體阻力小,具有最低的流阻(實際上為零)

QIUFAYIBANYOUSUOJINGHEBUSUOJINGTONGDAOLIANGZHONGJIEGOU。WULUNNAZHONGJIEGOU,QIUFADELIUZUXISHUDOUBIJIAOXIAO。TEBIESHISUOWEIQUANLIULIANGXING,JIBUSUOJINGDEQIUFA,YOUYUQITONGDAOZHIJINGDENGYUGUANDAONEIJING,JUBUZULISUNSHIZHIYOUTONGDENGCHANGDUGUANDAODEMOCAZULI,JIZAISUOYOUFAMENZHONG,ZHEZHONGQIUFADELIUZUZUIXIAO。ZAIHUOJIANFASHEJIQISHIYANXITONGZHONG,YAOQIUSHUSONGGUANDAODEZULIYUEXIAOYUEHAO。

JIANSHAOGUANLUXITONGDEZULIYOULIANGGETUJING:YISHIJIANGDILIUTILIUSU,WEICIXUYAOZENGDAGUANJINGHEFAMENTONGJING,ZHEDUIYUGUANLUXITONGDEJINGJIXINGWANGWANGHUICHANSHENGBULIDEYINGXIANG,TEBIEDUIDIWENSHUSONGXITONG(YEQING)SHIJIWEIBULIDE;YISHIJIANXIAOFAMENDEJUBUZULI,YINCI,QIUFAZIRANJIUCHENGLEZUIJIAXUANZE。

2、球閥啟閉開關迅速、方便。

苹果彩票app下载YOUYUQIUFAZAIYIBANQINGKUANGXIAZHIXUSHOUBINGZHUANDONG 90° JIUWANCHENGLEQUANKAIHUOQUANGUANDONGZUO,HENRONGYISHIXIANKUAISUQIBI。KESHIXIANDEKUAISUQIBI,MOUXIEJIEGOUDEQIBISHIJIANJINWEI 0.05~0.1s,YIBAOZHENGNENGYONGYUSHIYANTAIDEZIDONGHUAXITONGZHONG。KUAISUQIBIFAMENSHI,CAOZUOWUCHONGJI。

3、球閥密封性能好。

MUQIAN,JUEDADUOSHUQIUFADEFAZUODOUSHIYONGJUSIFUYIXIDENGDANXINGCAILIAOZHIZAO,JINSHUYUFEIJINSHUCAILIAOZUCHENGDEMIFENGFU,TONGCHANGCHENGWEIRUANMIFENG。YIBANSHUOLAI,RUANMIFENGDEMIFENGXINGRONGYIBAOZHENG,ERQIEDUIMIFENGBIAOMIANDEJIAGONGJINGDUYUBIAOMIANCUCAODUYAOQIUYEBUHENGAO。

4、球閥使用壽命長。

YOUYUJUSIFUYIXIYOULIANGHAODEZIRUNHUAXING,YUQIUTIDEMOCAMOSUNXIAO,ERQIEYOUYUQIUTIJIAGONGGONGYIDEGAIJIN,SHICUCAODUJIANGDI,CONGERTIGAOLEQIUFADESHIYONGSHOUMING。JUBAODAO,MEIGUO W-K-M GONGSIZAISHIYANSHINEIDUIQIUFAJINXINGSHOUMINGSHIYAN,KAIGUANCISHUCHAOGUO 10 WANCI。

5、球閥可靠性高主要是因為:

①QIUTIYUFAZUOYIDUIMIFENGFUBUHUIFASHENGCASHANG、JIJUMOSUNDENGGUZHANG,ZAIGONGZUOSHIBUHUIKAZHU(ZAIWURUNHUAJISHI),GUNENGKEKAODIYINGYONGFUSHIXINGJIEZHIHEDIFEIDIANYETIZHONG;

苹果彩票app下载②NEIZHUANGSHIFAGANJIEGOU,XIAOCHULEFAGANZAILIUTIYALIZUOYONGXIAKENENGYINTIANLIAOYAGAISONGKAIERFEICHUDESHIGUYINHUAN;

苹果彩票app下载③CAIYONGFANGJINGDIAN、NAIHUOJIEGOUDEQIUFA,SHIYONGYUSHUSONGSHIYOU、TIANRANQI、MEIQIDEGUANXIAN。

6、閥體內通道平整光滑更適于輸送粘性流體.漿液,以及固體顆粒。

7苹果彩票app下载、因在工作時不會卡住(在無潤滑劑時),故能可靠地應用腐蝕性介質和低沸點液體中。

8、球型關閉件能在位置上自動定位,并能承受關閉時的高壓差。

9、在較大的壓力和溫度范圍內,能實現完全雙向密封。

10、在全開和全閉時,球體和閥座的密封面與介質隔離,因此高速通過閥門的介質不會引起密封面的侵蝕。

11苹果彩票app下载、結構緊湊、重量輕,可以認為它是用于低溫介質系統的最合理的閥門結構。

12苹果彩票app下载、閥體對稱,尤其是焊接閥體結構,能很好地承受來自管道的應力。

13、全焊接閥體的球閥,可以直埋于地下,使閥門內件不受侵蝕,最高使用壽命可達 30 年,是石油、天然氣管線最理想的閥門。


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