新型叶顶汽封的数值计算与分析  

Numerical Simulation and Analysis of Rotor Shroud Seal

作　　者：王娟丽 钱禹龙 王姗 钟主海[1] 侯俊鹏 WANG Juanli;QIAN Yulong;WANG Shan;ZHONG Zhuhai;HOU Junpeng(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2021年第4期46-49,64,共5页Dongfang Turbine

摘　　要：文章用数值模拟的方法,比较分析了平齿、游标齿、圆形腔室游标齿叶顶汽封结构对通流性能的影响,得出3种叶顶汽封结构的漏气比相当,但对通流效率的影响不同;游标齿汽封结构比平齿汽封结构效率提高0.19%;圆形腔室游标齿汽封结构密封性最好,总效率比平齿结构的提高0.22%.In this paper,the influence of the flat tooth seal,vernier gear seal,circular cavity vernier gear seal structure on flow performance is compared and analysed using numerical simulation method.The results show that the leakage ratio of the three cases are fairly,but the efficiency of each cases aredifferent;The efficiency of vernier gear seal structure increased by 0.19%than flat tooth seal structure;The efficiency of circular cavity vernier gear seal structure increased by 0.22%than the flat teeth overall efficiency.

关 键 词：数值计算 圆形腔室 游标齿汽封 效率 漏气比 

分 类 号：TH453[机械工程—机械制造及自动化]