The operating condition of dryseal on centrifugal compressor and its economic benefits are introduced.
介绍了干气密封在离心压缩机上的工作运转情况，及其所带来的经济效益。
2
The Structure, working principle and characteristic of series dryseal system and the application of it on BCL-457 centrifugal compressor are introduced.
介绍了串联式干气密封系统的结构、原理、特点及在BCL - 45 7型离心压缩机上的应用情况。
3
This paper introduced dryseal and the working principle, structure and functions of its various parts, as well as its ap-plying situation in ethylene cold pumps.