30万千瓦机组低压缸第六级弯扭静叶的实验研究  

A EXPERIMENTAL INVESTIGATION OF THE STATOR WITH CURVE-TWISTED BLADES OF THE PENULTIMATE STAGE IN THE LOW-PRESSURE CYLINDER OF 300MW STEAM TURBINE

作　　者：王仲奇[1] 徐文远[1] 石红[1] 徐大懋[2] 茅声凯[2] 王松珺 

机构地区：[1]哈尔滨工业大学 [2]哈尔滨汽轮机厂

出　　处：《工程热物理学报》1993年第1期34-38,共5页Journal of Engineering Thermophysics

摘　　要：一、实验方案 30万kW汽轮机低压缸次末级的径高比D_m/l=5.03,静叶高度l=435mm,叶片数为58。 共实验了三个方案。三个方案中沿叶高各相应的截面上叶型都是相同的,其差别是叶片的母线弯曲程度不同。方案Ⅰ:叶片母线为直线,即叶片只扭不弯,方案Ⅱ和方案Ⅲ:叶片的母线为曲线,此两方案的叶片顶部倾斜角相同,叶片根部倾斜角,第二方案小于第三方案。Three types of cascades with coventional twisted and curve-twisted blades are tested. The experimental results show that an application of curve-twisted blades can reduce the loss energy coeficient 27%; lead to the outlet angle from the cascades being decreased 2°-3° in Com-parision with that from the cascades of conventional twisted blades and not significantly chage the distribution of the circulation along the hight of blades.

关 键 词：蒸汽透平 低压缸 叶片 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]