特大型变频电机驱动离心式压缩机组的设计难度较大。
It is difficult to design especially large variable frequency motor-driven centrifugal compressor unit in long distant pipeline.
介绍国际上先进的大型离心式压缩机组综合控制系统的发展趋势和技术要点。
A presentation is given of the trend of development and main technical points of the internationally advanced comprehensive control system for large centrifugal compressor units.
离心式压缩机组广泛应用于石油天然气工业领域，而多变效率是衡量该系统运行经济性的重要指标之一。
The polytropic efficiency is one of the most significant indicators which are used to judge the economical efficiency of the units.
本文介绍离心式压缩机原理，说明多级压缩离心式冷水机组能有效避免“喘振”，可应用于冰蓄冷系统。
The principle of centrifugal chillers is introduced to verify that chillers with multiple stages can avoid surge effectively and can be used in ice storage system.
介绍螺旋槽式干气密封的工作原理，通过在离心式压缩机上应用使瓦斯达到零泄漏，保证机组的安全操作与运行。
Principle of dry gas seal with screw groove type was introduced. It was applied in the centrifugal compressor to realize zero gas leakage. It has safety operation of the compressor group guaranteed.
介绍螺旋槽式干气密封的工作原理，通过在离心式压缩机上应用使瓦斯达到零泄漏，保证机组的安全操作与运行。
Principle of dry gas seal with screw groove type was introduced. It was applied in the centrifugal compressor to realize zero gas leakage. It has safety operation of the compressor group guaranteed.
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