简叙了密封技术的发展历史与现状,介绍了干气密封技术的原理与特点,并举例阐述了单端面干气密封的流程及控制系统,对干气密封技术在安装及使用中须注意的重点事项进行了简要整理,最后对干气密封技术在离心式压缩机行业的应用趋势做了展望。 Briefly introduce the history and current situation of the development of sealing technology, introduce the principle and characteristics of dry gas sealing technology, and give an example to illustrate the process and control system of single-end dry gas sealing. Pay attention to the dry gas sealing technology during installation and use Key issues were briefly organized, and finally the dry gas seal technology in the centrifugal compressor industry trends in the application prospects.