非均匀叶片后弯角对离心压缩机性能的影响  

Research on the Influence of Non-uniform Blade Bending Angle on Centrifugal Compressor Aerodynamic Performance

作　　者：宋权斌 王方才子 张方圆 王毅[2] SONG Quanbin;WANG Fangcaizi;ZHANG Fangyuan;WANG Yi(College of Energy and Power Engineering,Changsha University of Science&.Technology,Changsha 410114,China;Research Institute of Aerospace Technology,Central South University,Changsha 410083,China)

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410114 [2]中南大学航空航天技术研究院,湖南长沙410083

出　　处：《机械工程与自动化》2025年第2期38-40,44,共4页Mechanical Engineering & Automation

摘　　要：对某55kW离心压缩机模型进行数值模拟,研究非均匀叶片后弯角对离心压缩机性能的影响。研究结果表明:离心压缩机整级效率主要受到叶片叶根后弯角的影响,随着叶根后弯角的增大而增大;叶片后弯角对离心叶轮性能的影响很小,主要影响的是下游无叶扩压器内的流动情况;扩压器进、出口速度的大小和方向主要受到叶片叶根后弯角的影响,内部流动状况会随着叶根后弯角的增大得到改善。The numerical simulation of a 55 kW centrifugal compressor model was carried out to study the effect of non-uniform blade bending angle on the performance of the centrifugal compressor.The results show that the stage efficiency of centrifugal compressor is mainly affected by the rear bending angle of blade root and increases with the increase of the rear bending angle of blade root.The rear bending angle of the blade has little effect on the performance of the centrifugal impeller,but mainly affects the flow in the downstream bladeless diffuser.The magnitude and direction of diffuser inlet and outlet velocity are mainly affected by the rear bending angle of blade root,and the internal flow condition will be improved with the increase of the rear bending angle of blade root.

关 键 词：离心压缩机 离心叶轮 无叶扩压器 气动性能 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]