热力发电2019，Vol.48Issue(2)：114-119,6.DOI:10.19666/j.rlfd.201805094
汽轮机转子T型叶根-轮槽系统力学分析
Mechanical analysis of T-root and root groove of steam turbine rotor
摘要
Abstract
The integral model of T root-rim system of the steam turbine blade was established. Moreover, the static and dynamic stress in resonance state of the T-root and root groove were calculated. The high-cycle fatigue safety factor of the T-root groove was analyzed by Goodman method. The results show that, the fillets and the external small angle of the blade root, and the fillets on the end wall and both outsides of the T-root groove are critical areas, which is consistent with the areas of the T-root groove in the failed blade. The proposed method can provide designers with the theoretical basis for designing high-cycle fatigue safety performance of the T-root and root groove, and also provide the operators and inspectors with the critical component of the monitoring and inspection of the T-root and root groove.关键词
汽轮机/转子/T型叶根/叶根槽/高周疲劳/应力分析Key words
steam turbine/rotor/T-root/root groove/high-cycle fatigue/stress analysis分类
能源科技引用本文复制引用
王鹏,蔡晖,王志强,贾若飞..汽轮机转子T型叶根-轮槽系统力学分析[J].热力发电,2019,48(2):114-119,6.基金项目
西安热工研究院有限公司发展基金项目(TN-17-TYK07) （TN-17-TYK07）
