新型大功率汽轮机中压马刀型叶片的技术开发  

Development of IP Bowed Blade for a New Type of Large Steam Turbine

作　　者：杨建道[1] 阳虹[1] 张宏武[2] 

机构地区：[1]上海汽轮机有限公司,上海200240 [2]中科院热物理所,北京100080

出　　处：《热力透平》2006年第1期14-17,共4页Thermal Turbine

摘　　要：采用先进CFD技术,在原有可控涡叶片基础上,通过优化叶片的径向积叠规律,开发了新型大功率汽轮机的中压马刀型叶片。应用该叶片能使叶栅通道端部产生逆压力梯度,减少二次流损失,提高中压缸的流动效率,降低整机热耗。该叶片的应用具有较大的经济效益。Based on the previous controlled-vortex blades, the IP bowed blade for a new type of large steam turbine has been developed by applying advanced full 3-D CFD method and optimizing the radial stacking laws of the blade. This blade can be used to produce counter pressure gradient at cascade passage end, reduce secondary flow loss, increase the efficiency of IP casing consequently, and improve the heat rate of units. The application of this bowed blade will bring great economical benefit.

关 键 词：汽轮机 马刀型叶片 二次流损失 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]