【作者】 阳虹； 杨建道； 李军； 晏鑫； 何阿平； 丰镇平；

【Author】 YANG Hong~1,YANG Jiandao~1,LI Jun~2,YAN Xin~2, HE Aping~1,FENG Zhenping~2 1 Shanghai Electric Power Generation Equipment Co., Ltd.Turbine Works,Shanghai 200240,CHINA 2 Institute of Turbomachinery,Xi’an Jiaotong University,Xi’an 710049,CHINA

【机构】 上海电气电站设备有限公司汽轮机厂设计研究所； 西安交通大学能源与动力工程学院叶轮机械研究所；

【摘要】 喷嘴配汽调节级具有大焓降和低反动度的设计特点而应用于大功率冲动式汽轮机高压缸中。论文首先综述了大功率汽轮机喷嘴配汽调节级的气动性能和气流激振方面的研究进展。然后论文在300MW汽轮机反流初始设计喷嘴配汽调节级的的气动性能分析基础上,提出了顺流结构优化设计方案。对反流初始设计和顺流优化设计的喷嘴配汽调节级在设计工况和变工况下气动性能进行了分析比较。研究结果表明优化设计的顺流结构具有优良的气动性能而结构设计更加简单。论文最后给出了研究结论并对大功率汽轮机调节级的气动性能分析和气流激振机理研究方向进行了展望。更多还原

【Abstract】 The nozzle governing stage with large enthalpy drop and low reaction characteristics has been widely used in large power impulse steam turbines.The state-of-art of the aerodynamic performance and fluid excitation of nozzle governing stage for large power steam turbines were reviewed. Then,the three-dimensional aerodynamic performance of reverse-current flow referenced nozzle governing stage of 300MW steam turbine was analyzed in first.The concurrent flow structures of nozzle governing stage based on the reverse-current flow referenced design were presented.The designed and off-designed aerodynamic performance of the reverse-current flow referenced nozzle governing stage and concurrent flow design plans were numerical investigated.The obtained results show that the optimized concurrent flow structure nozzle governing stage has better aerodynamic performance and relative simple structure comparison of the reverse-current flow referenced design.In the end,the research and development of the nozzle governing stage in the aerodynamic performance analysis and fluid excitation mechanisms investigation was summarized.更多还原