流体机械2025，Vol.53Issue(4)：75-82,8.DOI:10.3969/j.issn.1005-0329.2025.04.011
带豁口叶轮的低温透平气动设计及性能研究
Study on low temperature turbine pneumatic design and performance of impeller with notch
摘要
Abstract
In view of a low temperature turbine expansion machine with excessive axial load and the insufficient performance study of the gap,firstly,the pneumatic design designed the pneumatic structure of the main structure of the gap,and then simulate the numerical simulation based on the simulation results.The results show that the presence of the impeller gap will change the flow field distribution within the roof gap,the impeller and the depth ratio of the gap,the impeller efficiency and power are reduced,and the axial force decreases.When the gap depth ratio of the gap is 0.3,the equal entropy efficiency decreases by 2.9%compared with 2.4%and the power,and the axial force is reduced by 38.1%.Meet the performance index.This study provides theoretical reference for the application of impeller with gap in low temperature turbine expander.关键词
透平膨胀机/叶轮/气动设计Key words
turbine expander/impeller/pneumatic design分类
通用工业技术引用本文复制引用
李百强,刁安娜,曾跃波,杨凡,袁玮玮..带豁口叶轮的低温透平气动设计及性能研究[J].流体机械,2025,53(4):75-82,8.基金项目
工信部海上LNG产业链攻关项目(2023GXZ00201) （2023GXZ00201）
