Abstract:

The impact of surge phenomenon is one of the biggest disadvantageous inherent factors in the normal operation of the core key component of air compressor. To address this issue, this work was performed through the investigation and discussion of the domestic and foreign-related literature to analyzes the parameter change and hardware inducement of the compressor surge to explore the external performance characteristics of the compressor surge phenomenon. It has been found that surge location is uncertain and the size structure of the system has a great effect on surge behavior, and the empirical critical value B is explained. This paper summarizes and puts forward anti-surge technical measures of the hardware and software, expounds on the impact of infrastructure, diffuser, impeller, shell, and other hardware structures on the surge, and points out the corresponding anti-surge measures and implementation effect. The principles of the fixing limit flow method, variable limit flow method and active control method with software and hardware were introduced in this work. The advantages, characteristics, and functions of these technologies are compared and analyzed, then the technical means of surge detection are summarized and classified. Finally, the computational fluid dynamics (CFD) technology is mainly introduced followed by the recent advancement in anti-surge technology and their future predictions are summarized. Comprehensive analysis shows that CFD combined with active control anti-surge technology will play a more important role in the future, which will help stall and surge research from qualitative to quantitative and achieve high-efficiency design and development of compressed air energy storage air compressor and normal high-performance operation.

Key words: compressed air energy storage, surge, fixing limit method, variable limit flow method, active control method, computational fluid dynamics