某300MW亚临界汽轮机调节级喷嘴出汽边断裂分析与对策

Crack Analysis and Preventive Measures for the Nozzle Outlet Edge at Governing Stage of 300MW Sub-critical Steam Turbine

主要从固体粒子腐蚀 (SPE)及喷嘴高频激振两方面 ,研究某 30 0MW亚临界汽轮机调节级喷嘴出汽边断裂事故的原因 。

This paper analyzes the reason and proposes a improved measures for the crack of nozzle outlet edge at governing stage of 300MW sub critical steam turbine in aspect of both solid particle erosion (SPE) and high frequency vibration excitation.