【摘要】 级间引气能够显著改变压气机的级间性能匹配，是压气机设计中常用的性能调试方法。通过对一台9级压气机开展引气结构设计、大级间引气试验测量和基于试验测量数据的子午流面参数计算，研究了大级间引气对轴流压气机级间性能的影响。研究结果表明：当级间引气量从13%变化到24%时，压气机堵塞流量变化较小，喘振裕度减小；过大的引气量会导致引气位置后面级出现较大的流动分离和效率降低，级间匹配变差，从而使得压气机总压比降低，喘振裕度下降。更多还原

【Abstract】 High bleeding flow rate could change the inter-stage performance match of multistage compressors, making it a usual way to adjust performance in compressor design. High bleeding flow structure design, inter-stage test and data analysis on which meridional flow field parameters were calculated have been applied on a 9-stage axial compressor to investigate the influence of high bleeding on inter-stage performance. Results show that when inter-stage bleeding varies from 13% to 24%,compressor flow blockage changes less and surge margin decreases. A high inter-stage bleeding rate leads to flow field separation, and the efficiency of downstream stages declines. Thus, the deteriorated stage matching causes a lower compressor overall pressure ratio and a worse surge margin.更多还原