风关控制阀控制回路的改进

The Control Loop Modification of FC Valve

针对风关控制阀,提出在控制回路中增加反相单元,并深入分析其使用原理,从而消除风关阀和风开阀在操作上的不同,提高控制系统的易操作性和生产装置的安全性。并介绍了两种分散型控制系统的现场使用,使用效果良好,对自控设计人员和仪表厂家有一定的参考价值。

In order to clear the operation difference between FC valve and FO valve, a method by add reverse-acting function module make the control system more easy to manipulate. And its successful field application have verified the validity of this method. It would shed light on control designers and manufactures.