带内部支撑结构的低压排汽缸气动性能分析  

Aerodynamic Analysis of Low-pressure Steam Turbine Exhaust Hood with Stiffeners Hood with Stiffeners

作　　者：钱小东 邰骁 刘庆龙 边超 胡瑞 刘海涛 王晓放 Xiao-dong Qian;Xiao Tai;Qing-long Liu;Chao Bian;Rui Hu;Hai-tao Liu;Xiao-fang Wang(Hangzhou Chinen Steam Turbine Power Co.,Ltd.;School of Energy and Power Engineering,Dalian University of Technology)

机构地区：[1]Hangzhou Chinen Steam Turbine Power Co.,Ltd. [2]School of Energy and Power Engineering,Dalian University of Technology

出　　处：《风机技术》2023年第1期24-30,共7页Chinese Journal of Turbomachinery

基　　金：National Natural Science Foundation of China(52005074);Natural Science Foundation of Liaoning Province(2022-MS-135)。

摘　　要：The static pressure recovery of low-pressure exhaust hood is important for the overall effectiveness of steam turbines.The tubular and plate stiffeners inside the exhaust contribute to the structural safety of exhaust,which affect the aerodynamic performance.Given the complicated exhaust model coupled with the last stage of turbine,this paper intends to investigate the aerodynamic performance of exhaust hood with individual stiffeners using highfidelity numerical simulations in order to figure out the corresponding effects.The results show that(1)the types of stiffeners have different effects on the aerodynamic performance;and(2)different installation positions and types of plate stiffeners have different effects on aerodynamic performance.The above investigations highlight the future demand regarding reasonable layout and quantity of stiffeners to improve the aerodynamic performance of exhaust as well as maintaining the structural safety.

关 键 词：Exhaust Hood Complex Flow STIFFENERS Static Pressure Recovery 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]