双层涡轮叶片应力计算与分析
Strength Calculation and Analysis of Double-layer Turbine Blade
李宗全 1牛夕莹 1安仲玉 1王林1
作者信息
- 1. 中国船舶集团有限公司第七〇三研究所,黑龙江哈尔滨 150078;船舶与海洋工程特种装备和动力系统国家工程研究中心—燃气轮机研发与检测试验室,黑龙江哈尔滨 150078
- 折叠
摘要
为了对可倒车燃气轮机中双层涡轮叶片应力进行分析,以双层涡轮叶片为研究对象进行反转状态下叶片的换热分析,并基于ANSYS-Workbench软件在正车额定工况及倒车额定工况下完成了双层涡轮叶片的应力计算.结果表明:叶片在反转状态下会不断与周围空气产生摩擦,使得叶片温度大幅升高,降低了叶片应力;对叶片采取冷却措施后,双层涡轮叶片的大应力位置主要位于过渡段,通过随形加强筋及空心倒车叶片的优化方案,可使得正车额定工况下的叶片强度储备系数由1.1增加至1.65,满足了叶片强度设计要求.
Abstract
In order to analyze the stress of double-layer turbine blade in reversing gas turbines,double-layer turbine blade was taken as the research object,the heat transfer of blade in reverse state was ana-lyzed,and the stress calculation of double-layer turbine blade was completed based on ANSYS-Work-bench software under forward and reverse working conditions.The results show that the heat will be con-tinuously generated by friction of blade with the surrounding air in reverse state,and the stress of blade is reduced by raised temperature;after the forced cooling measures is taken to reduce temperature,the large stress position of the double-layer turbine blade is mainly located in the transition section.The optimal scheme of follow-up stiffeners and hollow reversing blade can increase the strength reserve coefficient from 1.1 to 1.65 under forward working condition,meeting the design requirements of blade strength.
关键词
可倒车燃气轮机/双层涡轮叶片/反转换热/强度计算/结构优化Key words
reversing gas turbine/double-layer turbine blade/reverse heat transfer/strength calcula-tion/structural optimization引用本文复制引用
基金项目
国家科技重大专项(J2019-Ⅱ-0018-0039)
出版年
2024
NETL
NSTL
万方数据