以某燃气轮机低压8级压气机为母型，开展加零级改进设计。通过对母型机进行分析，合理地选取匹配点，对压气机零级进行了一维、二维气动设计，最后对零级压气机叶片进行三维造型。数值结果表明：新设计压气机在设计转速7 450 r/min下，流量为123 kg/s，总压比为6.125，等熵效率为88.3%，喘振裕度为32.8%，达到了设计指标；新设计零级与母型机流场匹配较好；通过对压气机变工况性能进行分析，各主要运行工况喘振裕度满足10%设计要求。

Based on the prototype of a marine gas turbine 8stage low pressure compressor,an innovation design with zerostage addition is carried out.After analyzing detailed and selecting reasonably the matching point of the prototype compressor,onedimensional and twodimensional detailed aerodynamic designs for the zerostage are conducted.At last,the threedimensional modeling is also used for the zerostage blade design.The new design 9stage compressor numerical results show that the massflow is 123 kg/s,the total pressure ratio is 6.125,the isentropic efficiency is 88.3%,and the surge margin is 32.8% at the design speed of 7 450 r/min.All of the results above meet the design target.The flowfield of the front zerostage matches well with the rear prototype compressor stages.The Analysis on the offdesign performance of the new compressor indicates the surge margin of main operating conditions also meets the design requirement of 10%.

TK473

航空发动机及燃气轮机国家重大科技专项；船舶与海洋工程动力系统国家工程实验室——海洋工程燃气轮机实验室资助项目