【作者】 郑小波； 魏雅静； 郭鹏程； 王兆波；

【Author】 ZHENG Xiao-bo;WEI Ya-jing;GUO Peng-cheng;WANG Zhao-bo;State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology;

【机构】 西安理工大学西北旱区生态水利国家重点实验室；

【摘要】 为了实现双向贯流式水轮机发电工况与抽水工况的协同优化,本文对双向贯流式机组转轮的多工况优化设计进行了初步探索。根据双向贯流式水泵水轮机的特点,构建了集成几何参数化、网格自动划分、数值计算、应力计算以及整体优化的转轮优化设计系统。以转轮叶片七个翼型骨线的挠度参数、厚度变量以及进口偏移量等21个参数为优化变量,以水力效率最大值、水压力的最小值以及结构应力最大值为优化目标函数,对正向水轮机工况和反向水泵工况进行了联合优化。结果表明:优化后叶片的效率和最低压力都有不同程度的提高,结构最大应力极大降低,应力分布更加均匀,转轮总体性能得到提升,为开展双向贯流式水轮机的多工况联合优化提供了参考。更多还原

【Abstract】 In order to realize the synergistic optimization of the bi-directional tubular turbine power generation and pumping conditions,this paper makes a preliminary exploration on the multi-case optimization design of the two-way tubular unit runner.According to the characteristics of the bidirectional tubular pump turbine,this paper constructs a runner optimization design system with integrated geometric parameterization,grid automatic division,numerical calculation,stress calculation and overall optimization.Taking 21 parameters such as deflection parameters,thickness variables and inlet offset of the seven airfoil bone lines of the runner blade as the optimization variables,the maximum hydraulic efficiency,the minimum water pressure and the maximum structural stress are used as the optimization objective function.Joint optimization of forward turbine operating conditions and reverse pump operating conditions.The results show that the optimized efficiency and minimum pressure of the blade are improved to different extents,the maximum stress of the structure is greatly reduced,the stress distribution is more uniform,and the overall performance of the runner is improved,which is jointly optimized for the development of the two-way tubular turbine.更多还原