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  • 電動閥門在石化行業中的應用

    1.石油、天燃氣井口裝置用閥石油、天燃氣井口裝置用閥主要為符合美國API6A标準的單閘闆或雙閘闆、有導流孔或無導流孔的鍛鋼平行式閘閥、泥漿閥、角式節流閥、油田專用平行式調節閥、油田專用直通式止回閥、注水聚合物專用平行式閘閥、卡箍式平行閘閥、
    發布時間:2018-05-11   點擊次數:30

  • 現代工業對調節閥的使用要求

    先進的現代化工業是以生産自動化為标志的。從自動化系統的發展曆史和進步來看,技術工具的變更起着極為重要的作用。各種先進的控制手段不斷出現,但基本的控制規律沒有改變,而技術工具的改進卻是日新月異。智能儀表的研制和使用更為工業自動化美好未來。典型
    發布時間:2018-05-11   點擊次數:28

  • 氣動薄膜調節閥的選型

    1.1根據使用要求選型氣動薄膜調節閥由閥芯和閥體(包括閥座)兩部分組成,按不同的使用要求有不同的結構形式,氣動薄膜調節閥主要有直通單座閥、雙座調節閥和高壓角式調節閥。直通單座閥洩漏量小,流體對單座閥芯的推力所形成的不平衡力很大,因此直通單
    發布時間:2018-05-11   點擊次數:24

  • 氣動閥門與電動閥門的優點與缺點

    氣動閥動作力距比電動閥門大,氣動閥門開關動作速度可以調整,結構簡單,易維護,動作過程中因氣體本身的緩沖特性,不易因卡住而損壞,有氣源,且其控制系統也比電動閥門複雜。氣動閥門響應靈敏,安全可靠,很多對控制要求高的廠專為氣動儀表控制元件設置壓縮
    發布時間:2018-05-11   點擊次數:36

  • 閥門電動裝置的正确選擇依據

    閥門電動裝置是用于操作閥門并于閥門相連接的裝置之一。該裝置由電力來驅動,其運動過程可由行程、轉矩或軸向推力的大小來控制。由于閥門電動裝置應有的工作特性和利用率取決于閥門的種類、裝置的工作規範及閥門在管線或設備上的位置。因此掌握閥門電動裝置正
    發布時間:2018-05-11   點擊次數:32

  • 如何加快電動球閥行業的快速發展

     電動球閥是是工業自動化控制系統中的重要執行機構。電動球閥如今已在石油、天燃氣、醫藥、食品、水電、核電、電力、給排水、供熱、冶金等行業中得到廣泛的使用,是國防建設至關重要的機械産品。同時也是科技建設不可缺少的産品。它占據了市場的很多份額,主
    發布時間:2018-05-11   點擊次數:28

  • 怎樣正确選擇電動球閥

    據介紹,未來近10年來,我國将有2萬多千米的輸油管線要建設,其中包括俄羅斯、哈薩克斯坦等跨國輸油管線。另外,繼“西氣東輸”後,我國還要建設2萬多千米的跨國輸氣管線和支線。這些工程大約需要2萬多隻大口徑管線球閥和中小口徑球閥、平闆閥;還将建設
    發布時間:2018-05-11   點擊次數:35

  • 氣動調節閥氣源故障的排除方法

    氣動調節閥就是以壓縮空氣為動力源,以氣缸為執行器,并借助于電氣閥門定位器、轉換器、電磁閥、保位閥等附件去驅動閥門,實現開關量或比例式調節,接收工業自動化控制系統的控制信号來完成調節管道介質的:流量、壓力、溫度等各種工藝參數。氣動調節閥的特點
    發布時間:2018-05-11   點擊次數:29

  • 幾種閥門的優缺點

    閘閥:閘閥是指關閉件(閘闆)沿通道軸線的垂直方向移_動的閥門,在管路上主要作為切斷介質用,即全開或全關使用。一般,閘閥不可作為調節流量使用。它可以适用低溫壓也可以适用于高溫高壓,并可根據閥門的不同材質。但閘閥一般不用于輸送泥漿等介質的管路中
    發布時間:2018-05-11   點擊次數:36

  • 八種方法巧選調節閥

    ❶閥型的選擇(1)确定公稱壓力,不是用Pmax去套PN,而是由溫度、壓力、材質三個條件從表中找出相應的PN并滿足于所選閥之PN值。(2)确定的閥型,其洩漏量滿足工藝要求。(3)确定的閥型,其工作壓差應小于閥的允許壓差,如不行,則
    發布時間:2016-07-27   點擊次數:47

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