摘要
干气密封技术在超临界二氧化碳(supercritical carbon dioxide,S-CO_(2))布雷顿循环涡轮机械中的应用,以其卓越的密封性能和稳定性,为旋转机械的安全运行提供了保障,并显著改善了轴端密封效果。鉴于密封介质的特殊物性以及高参数化工作环境的要求,在S-CO_(2)干气密封热动力学性能研究过程中涉及复杂的流体润滑理论。本文重点阐述了多重流体效应以及相变特性对S-CO_(2)干气密封性能和流动传热特性的作用机理和影响规律,详细列出了理论研究中常采取的分析模型和求解算法,并综合评述了国内外在理论和试验方面对S-CO_(2)干气密封热动力学性能的研究。在此基础上,结合领域需求和现有先进技术,进一步提出了今后的发展方向,以期为深入开展相关研究提供理论参考,促进干气密封技术在未来能源领域中的广泛应用。
The deployment of dry gas seal technology in supercritical carbon dioxide Brayton cycle turbine machinery,endowed with its exceptional sealing efficacy and stability,confers a safeguard for the secure operation of rotating machinery,while notably enhancing the shaft end sealing effect.In light of the distinctive physical properties of the sealing medium and the necessities of high-parameters operational milieu,intricate fluid lubrication theory is invoked in the investigation of thermodynamic performance of S-CO_(2) dry gas seal.Owing to above discussion,this paper centered on the action mechanism and influence law of multifarious fluid effects and phase transition characteristics on the performance of S-CO_(2) dry gas seal and flow heat transfer characteristics,elucidated in meticulous detail the analytical models and solution algorithms commonly employed in theoretical research,and thoroughly reviewed the theoretical and experimental investigations on the thermodynamic performance of S-CO_(2) dry gas seal domestically and internationally.Subsequently,combining the demands of the field and existing advanced technologies,future developmental research trajectories were further proposed,with the aim of furnishing a theoretical reference for further inquiry into the correlative research and advancing the more application of dry gas seal technology in the future energy sector.
作者
江安迪
丁雪兴
王世鹏
丁俊华
力宁
JIANG Andi;DING Xuexing;WANG Shipeng;DING Junhua;LI Ning(College of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,Hunan,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2024年第5期2354-2369,共16页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(51565029)
宁波市重大专项(2020Z112)。
关键词
超临界二氧化碳
干气密封
相变
流体润滑理论
热动力学性能
supercritical carbon dioxide
dry gas seal
phase change
fluid lubrication theory
thermodynamic performance
