可编程控制器在空分设备上的应用

Application of a Programmable Controller to Air Separation Plants

本文结合汉钢氧气厂切换控制器的研制课题，简单介绍了空分设备中蓄冷器自动切换系统的工作原理及国内现状；详细描述了如何利用可编程控制器的内部资源，研制出新的切换控制器，使其功能得到完善和提高．

This paper briefly introduces the operation principle of an automatic control system in air separation plants.How to exploit internal resources of the programmable controller and develop a new one are described in detail so as to make its function be perfected and raised.