Selection Analysis of Centrifugal Compressors for Gas Storage Facilities

doi:10.11885/j.issn.1674-5086.2025.12.24.03

Abstract

Abstract: Gas injection compressors serve as the core power equipment for pressurized gas injection in gas storage, and the unit configuration scheme directly determines the peak-shaving capacity, operational stability and energy consumption level of gas storage. To clarify the adaptation law of centrifugal compressors with different structures in gas storage engineering, optimize the type selection and configuration of compressors, and reduce the project operation cost, a study on the type selection and application of centrifugal compressors for gas storage is carried out. Adopting the methods of literature investigation, structural comparative analysis and engineering economic comparison, this paper systematically summarizes the application status and technical development trend of compressors in domestic gas storage facilities. The structural characteristics, technical bottlenecks and applicable working conditions of three mainstream centrifugal compressor units, namely single-cylinder single-stage, single-cylinder two-stage and high-low pressure cylinder types, are compared and analyzed. Combined with actual gas storage engineering projects, quantitative economic comparison of different compressor configuration schemes (single-cylinder single-stage and single-cylinder two-stage) is conducted from the dimensions of equipment cost, operating energy consumption and maintenance cost. The research results show that the single-cylinder single-stage unit features a simple structure and is suitable for low-pressure conventional gas injection scenarios, while the single-cylinder two-stage centrifugal compressor matches the injection operating conditions of medium-to-high-pressure gas storage and delivers optimal overall performance. The research conclusions define the adaptation boundaries of different types of centrifugal compressors as well as the bottlenecks and improvement directions of domestic centrifugal compressors, which can provide theoretical reference and technical guidance for the type selection, structural optimization and engineering configuration of compressors in gas storage facilities.

Key words: gas storage, centrifugal compressor, single-cylinder two-stage type, configuration and type selection, economy

CLC Number:

TE822

ZOU Xuejing, ZHANG Xu, WANG Xufeng, LI Mengxia, MENG Hong. Selection Analysis of Centrifugal Compressors for Gas Storage Facilities[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2026, 48(4): 188-196.

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