热力透平2026，Vol.55Issue(2)：123-126,4.DOI:10.13707/j.cnki.31-1922/th.2026.02.008
压缩空气储能透平机组轴封系统设计
Design of Shaft Seal System for Compressed Air Energy Storage Turbine Unit
摘要
Abstract
To meet the specific sealing requirements of compressed air energy storage(CAES)turbine units,a novel shaft seal system scheme was designed.The specific design was as follows:by analyzing the characteristics of the air medium and the operational features of the unit,a scheme combining isolation air and a buffer chamber was designed to address the issue of high-temperature air leakage,which could effectively reduce the leakage temperature.A passive direct-discharge structure was adopted to control shaft seal leakage,and the chimney effect was used to create a micro-negative pressure seal.The layout of the valve stem leakage pipeline was optimized to achieve partial working fluid recovery.Simultaneously,recommendations for staged flow velocity control and pipeline slope were proposed.These measures effectively improved the overall efficiency of the unit.The research findings can provide reference for the shaft seal design of CAES turbine units.关键词
压缩空气储能透平机组/轴封系统/门杆漏气Key words
compressed air energy storage turbine unit/shaft seal system/valve stem leakage分类
信息技术与安全科学引用本文复制引用
乐项,孙晨峰..压缩空气储能透平机组轴封系统设计[J].热力透平,2026,55(2):123-126,4.基金项目
2024年度上海市促进产业高质量发展专项(ZB-ZBST-01-24-0602) （ZB-ZBST-01-24-0602）
