【作者】 谢永慧； 张明辉； 周琴； 张荻； 丰镇平；

【Author】 Xie Yonghui,Zhang Minghui,Zhou Qin,Zhang Di,Feng Zhenping School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049

【机构】 西安交通大学能源与动力工程学院；

【摘要】 叶片是透平机械中的重要零部件,叶根是把叶片安装在叶轮或者转轴上的联接部件,承载着叶片巨大的离心力和其它载荷。改进叶根结构可以有效降低其应力水平,提高叶片运行可靠性。本文首先总结了国内外研究者在叶根轮缘结构优化方面的研究状况及成果;其次提出了一套综合有限元分析方法和数学优化算法相结合的透平叶片叶根轮缘结构优化方法,并针对多种不同叶根型式进行了优化分析,均取得了良好的优化效果;多个实际工程算例说明本文建立的优化方法是有效的,具有良好的工程实用价值。更多还原

【Abstract】 Blade is one of the most important components in turbomachinery,it is the connection part for installation of blade on wheel or shaft,and bears the large centrifugal force and other loads of blade.The improvement of root structure can decrease stress of blade and guarantee the operation reliability of blade.Firstly,the advance and results of the research on structure optimization for turbine blade root and rim are summarized.Secondly,a structural optimized method on root and rim,which is based on the combination of finite element method and mathematic optimize algorithms,has been developed.Design optimization for various kinds of roots is conducted and leads to good results on root and rim structure.The practical examples show the optimization method developed in this paper is valid and it has significant value for engineering application.更多还原