汽封对汽轮机通流气动性能影响的数值研究  

Numerical Study on the Influence of Steam Seal on the Aerodynamic Performance of Steam Turbine

作　　者：申连洋 SHEN Lianyang(The Second Military Representative Office of Department of Naval Equipment Shenyang Bureau in Harbin,Harbin 150046,China)

机构地区：[1]海装沈阳局驻哈尔滨地区第二军事代表室,哈尔滨150046

出　　处：《机械工程师》2020年第8期96-98,共3页Mechanical Engineer

摘　　要：研究了迷宫汽封和蜂窝汽封在不同径向间隙下的流动情况,计算结果显示:随着汽封径向间隙尺寸的增加,在蜂窝汽封和迷宫汽封的情况下,级效率逐渐降低,轴向推力逐渐减小,叶顶汽封泄漏量逐渐增加。在小间隙范围内,蜂窝汽封的气动性能优于迷宫汽封。This paper studies the flow of labyrinth and honeycomb seals with different radial clearances.The results show that with the increase of the radial clearance,the stage efficiency decreases,the axial thrust decreases and the leakage of the top gland increases.In the range of small clearance,the aerodynamic performance of honeycomb seal is better than labyrinth seal.

关 键 词：汽轮机 汽封 CFD 数值模拟 

分 类 号：TK263.2[动力工程及工程热物理—动力机械及工程]