末级长叶片几何参数对汽轮机流场气动特性的影响  

Influence of Geometric Parameters of Last Stage Blade on Turbine Flow Field Characteristics

作　　者：程凯 彭泽瑛 

机构地区：[1]上海电气电站设备有限公司上海汽轮机厂,上海200240

出　　处：《热力透平》2008年第3期168-173,共6页Thermal Turbine

摘　　要：简要介绍了标准的准三维流动方法以及在汽轮机低压缸通流设计中的典型应用实例,探讨了末级长叶片的叶高、动静叶片喉节比、静叶扭曲规律、静叶倾角、动静叶轴向间距等几何参数对热力气动特性的影响,计算结果可作为低压缸通流部分优化设计的参考。This article briefly introduces the quasi-three dimensional transonic flow method which is a standard code for designing the blade path of a low pressure turbine. The geometric parameters of the last stage blade such as height and gauging of the blade and stator, gauging distribution along the radial direction of stator, lean degree of the stator, axial gap between the blade and stator are discussed to find their influence on the characteristics of the flow field and the results are supposed to be a helpful reference to optimize the practical engineering of LP blade path.

关 键 词：气轮机 通流设计 末级叶片 弯扭静叶 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]