基于模化理论的某小F燃气轮机压气机叶片设计  

Design of Compressor Blades in a Small F-Class Gas Turbine Based on Modeling Theory

作　　者：刘丽丽 LIU Lili(Shanghai Electric Gas Turbine Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海电气燃气轮机有限公司,上海200240

出　　处：《热力透平》2025年第1期37-43,共7页Thermal Turbine

摘　　要：燃气轮机开发过程中经常会采用经过验证的成熟压气机进行模化设计,但叶片模化后需要重新评估安全性。基于模化理论,对某小F燃气轮机压气机开展了改型设计,并对模化前后的叶轮强度及振动特性进行了有限元计算考核及比较。对比结果表明,模化设计对叶身及叶根应力的大小与分布影响较小,模化后的轮槽应力相比于原型机会有一定偏差,尤其是当轮盘没有完全按照缩尺比例进行模化设计时,整个叶轮的振动考核避开率会与原型机存在差异。研究成果可为压气机利用模化理论进行快速升级提供设计参考。In the upgradation and development of compressors in gas turbine,verified and mature compressor blades are often used for modeling design,however,the safety of the modelled blades needs to be reevaluated.Based on the modeling theory,the remodel design is carried out on the compressor of a small F-class gas turbine,and the strength and vibration characteristics of the impeller are evaluated and compared before and after the modeling using finite element calculations.The comparison results show that the modeling design has a relatively small impact on the value and distribution of stress on the blade body and root,while the groove stress may have certain deviations after modeling,especially when the compressor disc is not fully modeled according to the scaling ratio,the vibration assessment avoidance rate of the entire impeller will differ from that of the prototype.The research results can provide design references for rapid upgrading of compressors using modeling theory.

关 键 词：燃气轮机 压气机 模化设计 有限元计算 

分 类 号：TK474.8[动力工程及工程热物理—动力机械及工程]