超临界汽轮机调节级喷嘴固粒冲蚀特性的预测与抗冲蚀方法  

Prediction of Solid Particle Erosion(SPE) Characteristics of the Nozzles of a Super-criticalSteam Turbine Governing Stage and the Measures Against SPE

作　　者：戴丽萍[1] 俞茂铮[1] 王贤钢[1] 侯平利[1] 李续军[2] 刘志江[2] 

机构地区：[1]西安交通大学叶轮机械研究所,西安710049 [2]国家电力公司热工研究院,西安710042

出　　处：《汽轮机技术》2002年第6期329-332,共4页Turbine Technology

摘　　要：采用数值方法计算了超临界汽轮机调节级喷嘴内的固体颗粒运动特性,根据固体颗粒撞击叶片的位置、速度与撞击角以及材料的抗冲蚀性能综合分析了喷嘴的冲蚀机理与冲蚀特性,并阐明了利用气动设计方法和表面强化手段降低冲蚀的基本原理。The motion behavior of solid particles in the nozzle passage of a governing stage of a supercritical steam turbine is numerically analysed. According to the impact position, velocity, angle and the antierosion performance of the material the erosion mechanism and erosion characteristics are analysed, furthermore, the aerodynamic measures and surface strengthening measures for reducing erosion are discussed.

关 键 词：超临界汽轮机 预测 抗冲蚀 固粒冲蚀 调节级 喷嘴 电力 

分 类 号：TM621.3[电气工程—电力系统及自动化]