热力透平2024，Vol.53Issue(2)：102-107,134,7.DOI:10.13707/j.cnki.31-1922/th.2024.02.008
不同因素对调节级气动性能影响研究
Influence of Different Factors on Aerodynamic Performance of Control Stage
孙旺 1陈二云2
作者信息
- 1. 上海汽轮机厂有限公司,上海 200240
- 2. 上海理工大学 能源与动力工程学院,上海 200093
- 折叠
摘要
Abstract
As for the control stage performance,area ratio of flow passage(to characterize the reaction degree of the stage),velocity ratio and coverage of rotating and stationary blades are important factors besides blade cascade profile,vane pitch and incidence angle.Therefore,it is of great significance to study their influence on the aerodynamic performance.Taking the control stage of an industrial steam turbine with high parameters and low flow as the research objective,the flow fields of control stage with nozzle relative blade height of 0.24 and 1.0 were calculated respectively using numerical simulation method,and the influence of area ratio of flow passage,velocity ratio and coverage of rotating and stationary blades on the aerodynamic performance of the control stage was analyzed.The results showed that the stage efficiency of the control stage increased with the increase of area ratio of flow passage.In the condition of nozzle relative blade height of 0.24,the efficiency growth slowed down when the area ratio of flow passage exceeded 1.5,and reached the maximum value when the area ratio was 1.65.After the nozzle relative blade height reached 1.0,the distribution curve of the stage efficiency and area ratio of flow passage moved towards upper right.The stage efficiency increased with the increase of velocity ratio,and stayed at a high level when the velocity ratio was 0.6-0.75.With other conditions being equal,the stage efficiency reached the maximum value when the relative coverage of rotating and stationary blades was about 0.08.The research results can provide reference for the research and design of high performance control stage in industrial steam turbines.关键词
调节级/气动性能/数值模拟/速比/盖度/动静面积比Key words
control stage/aerodynamic performance/numerical simulation/velocity ratio/coverage of rotating and stationary blades/area ratio of flow passage分类
能源科技引用本文复制引用
孙旺,陈二云..不同因素对调节级气动性能影响研究[J].热力透平,2024,53(2):102-107,134,7.
