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電動閥的結構與作用

人氣:0發表時間:2019/12/5 23:30:01

電動閥的結構與作用

隨著工業的發展,電動閥的出現比氣動閥晚,但其應用范圍越來越廣。由于不需要氣源,安裝使用方便。只要電源和控制信號接通,就可以工作。下面我來為您介紹電動閥的結構和功能。


電動閥的典型形狀,由兩個可拆卸的執行器和一個調節閥(調節機構)組成。上部為執行機構,接收來自調節器的0-10madc或4-20madc信號,轉換成相應的線性位移,推動下部調節閥動作,直接調節流體流量。各種電動閥的執行器基本相同,但調節閥(調節機構)的結構因操作條件不同而類型很多,最常用的是直通單閥座和直通雙閥座。

電動閥是由調節閥體和各種電動執行機構組成的工業現場執行儀表。接收來自調節器的4-20mA或脈沖信號,進行閉環控制,實現流量、壓力、溫度、液位等參數的自動控制。它還可以選用智能電動執行機構,與DCS、PLC等設備實現數字化傳輸,形成更加智能化的控制制造系統。電動調節閥有兩種供電電壓:220 V和380 V。電動閥、電動單閥座調節閥和電動小流量調節閥的流量特性是等百分比、線性、快等三種。


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