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节流应用中的蝶阀管道尺寸问题 Problem with line size butterfly valve for throttling application

如果在节流应用中选用管道尺寸大小的蝶阀,便会缺乏对高低两种流量的控制,也就是说,管道尺寸大小的蝶阀的实际有效控制范围只介于 30% 至 50% 开度之间。

当出现特殊情况,要求蝶阀在此范围以外操作时,它通常在低流量下仍能转动,但在高流量下便变得缓慢。 在此情况下,阀门一般会从自动模式切换至手动模式,否则会严重失调, 也就是说,它将会完全丧失控制能力。

现在,我们找到了解决此控制范围难题的方法:Fisher Control-Disk旋转阀。

Control-Disk 阀门扩大了控制范围从 10% 开度一直延伸至 70% 开度。 这使得适用的应用范围扩大了 300%!

请点击以下图片,观看动画演示。

http://www.documentation.emersonprocess.com/public/videos/controldiskvideo/index.html

3 Replies

  • Fisher China,

    Thanks for posting great topics on forum to be discussed!

    some small suggestion for further topics

    - Hight your topic with a simple English follow to Chinese one which give idea to global audience on what people talking about .

    - Put some key words into Tag before post out for people to seeking out.

    Thanks a lot !

    Major Chu

  • In reply to Major Chu:

    Thanks for your suggestions, I will revise accordingly.

  • In reply to Fisher China:

    请问3偏心蝶阀和2偏心的蝶阀在过程控制上的应用和在ESD上的应用有何不一样? 谢谢了...

    Major Chu