大型空冷汽轮机低压排汽缸几何尺寸对气动性能的影响

Effection of Geometry Dimension on Aerodynamic Performance of Low Pressure Exhaust Hood for Large Capacity Steam Turbine with Air-Cooled Condenser

在多年试验研究的基础上,归纳和总结了大型空冷汽轮机低压排汽缸几何尺寸对其气动性能的影响规律,并提供了排汽缸的轴向尺寸、环形扩压管形状尺寸、蜗壳横向宽度及蜗壳上半缸形状尺寸等方面的优化选型的原则和建议,为空冷汽轮机的设计提供了有意义的参考依据。

Based on the previous experimental researches, the paper has summed up and analyzed the effection rule of geometry dimension on aerodynamic performance of low pressure exhaust hood for large capacity steam turbine with aircooled condenser, and given the principle and proposal of optimized design for the axial length, the shape dimension of the annular diffuser, transversal width of the exhaust hood, and the shape dimension of the upper half hood, and offered the signification design reference for the steam turbine with aircooled condenser. Figs 3.