透平叶片弯、扭、掠联合造型规律及其气动性能研究  

Study on Blade Bending, Twisting and Sweeping Combined Modeling Law and Turbine Stage Aerodynamic Performance

作　　者：付亚玮 杨欢 李博 黄典贵[1] FU Ya-wei;YANG Huan;LI Bo;HUANG Dian-gui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,Post Code:200093)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《热能动力工程》2023年第10期31-40,50,共11页Journal of Engineering for Thermal Energy and Power

基　　金：国家科技重大专项(J2019-Ⅱ-0010-0030Y2019-Ⅰ-0002-0003)。

摘　　要：为研究静叶弯、扭、掠联合造型对流场结构的影响,以某高压透平首级叶片为研究对象,借助计算流体力学与正交优化方法,基于动静叶最佳匹配原则(即对于每种静叶构型,动叶都进行了相应的扭转规律变化,使得动静叶气动性能处于最佳匹配状态),研究了静叶不同复合构型方式对流场结构的影响。结果表明:在合理的静叶弯曲规律下,静叶扭转改型对透平性能有较大影响,掠改型对透平性能影响有限;在一定的扭转规律下,对静叶进行掠改型对轮周效率的影响较小,仅后掠改型会提高透平的轮周效率;对弯扭掠静叶匹配扭动叶进行联合优化,得到的最佳透平的轮周效率为87.12%,与原始透平相比,轮周效率提高了2.09%。To study the influence of stator blades bending,twisting and sweeping combined modeling on the flow field structure,this paper took first stage blade of a high pressure turbine as the research object,using computational fluid dynamics(CFD)and the orthogonal optimization method,based on the best matching principle of stator and rotor blades(i.e.for each kind of stator blade configuration,the rotor blade carried out the corresponding twisting rule changes,making the stator and rotor blades aerodynamic performance in the best matching state),the influence of different composite configurations of stator blades on the flow field structure was studied.The results show that under the reasonable bending law of stator blades,the twist modification of stator blades has a great influence on turbine performance,while the sweep modification has a limited influence on turbine performance;under a certain twisting law,the sweepback modification of stator blades has little effect on the turbine wheel efficiency,and only the sweep modification can improve the turbine wheel efficiency;the joint optimization of the bending,twisting and sweeping stator blade matched with the twisting rotor blade shows that the optimal turbine has a wheel efficiency of 87.12%,which is increased by 2.09%compared with the original turbine.

关 键 词：透平 正交优化 弯扭掠叶片 数值模拟 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]