超超临界1000MW汽轮机双流调节级气动性能研究

Investigation on Aerodynamic Performance of Double-flow Controlling Stages for Ultra-supercritical 1000 MW Turbine

文章采用CFD数值分析软件完成了超超临界1 000 MW汽轮机双流调节级气动性能分析,分析对象包括双流进汽腔室、双流调节级整圈、外部回流腔室、出口混流腔室全真几何模型;分析结果表明在三阀、四阀工况下,该调节级进汽腔室结构压损小,调节级气动性能优良,能达到热力设计目标。

In this paper, aerodynamic performance of double-flow controlling stages for ultra-supercritical 1 000 MW turbine which includes inlet chamber, controlling stages, outsider of the reverse flow chamber and export mixed flow chamber was investigated by using CFD software. The analysis result shows that the loss of total pressure in inlet chamber was lower under operation condition, the high aerodynamic performance of controlling stages could achieve the goal of thermodynamic design.