工业汽轮机轮室复杂流动的气动特性与改型研究  

Study on Aerodynamic Characteristics and Modification of Complex Flow in Rear Chamber of Regulating Stage of Industrial Steam Turbine

作　　者：张科 刘盼年 张超 马晓飞 张军辉[1] ZHANG Ke;LIU Pan-nian;ZHANG Chao;MA Xiao-fei;ZHANG Jun-hui(Hangzhou Steam Turbine Co.,Ltd.,Hangzhou 310022,China)

机构地区：[1]杭州汽轮动力集团有限公司,杭州310022

出　　处：《汽轮机技术》2023年第3期176-178,共3页Turbine Technology

基　　金：杭州汽轮动力集团有限公司年度科研项目(C研22-04)。

摘　　要：针对采用喷嘴调节的工业汽轮机,其调节级根径显著高于转鼓级,在调节级出口设置轮室腔室来完成气流径向与轴向转弯,使其到达转鼓级进行膨胀做功。采用数值方法对轮室内的复杂流动进行了详细计算与分析,揭示了工业汽轮机轮室内的流场结构与损失机理,提出了轮室结构的气动优化方向。研究结果可以为工业汽轮机轮室的设计与优化提供理论依据。Aiming at industrial steam turbines with nozzle regulation,the root diameter of the regulating stage is significantly higher than that of the drum stage,the chamber is set at the outlet of the regulating stage to solve the radial and axial turns of the steam flow,so that it reaches the drum stage for expansion and work.In this paper,the complex flow in rear chamber of regulating stage is analyzed in detail by numerical method,the flow field structure and loss mechanism in the chamber of industrial turbine are revealed,and the aerodynamic optimization direction of chamber structure is proposed.The research results can provide a theoretical basis for the design and optimization of the rear chamber of the regulating stage for industrial steam turbine.

关 键 词：工业汽轮机 轮室 流场结构 气动特性 数值模拟 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]