汽轮机调节级静叶栅中采用多分流叶栅的研究

In order to improve the aerodynamic efficiency of steam turbine control stage, the paper presellts multi-splitter cascade structure to be used in the conirol stage. Based on calculation and analysis, this structure can obviously increase the degree of partial admission in the control stage and reduce the partial admission loss. Meanwhile, it also improves considerably the aerodynamic performance in the cascad end. Through comparvision for three schemes, we have designed a good scheme of the multi-splitter cascade.

中小汽轮机多分流叶栅的气动设计与应用

在中小汽轮机高压级的喷嘴叶栅中存在着严重的流动损失，为了改善其气动性能，作者提出的多分流叶栅技术，对于提高中小汽轮机高压级的热经济性是一条切实有效的途径。这项技术已被哈汽、东汽和上汽等厂应用于大功率汽轮机高压级的改型设计，并已取得了明显的经济效益。