【摘要】 分析了C5 0 90 / 13型汽轮机低压缸叶片断裂事故的原因 ,提出了更换第 13级叶片、低压缸通流部分改进、整机通流部分改进几种解决对策 ,并从改造费用、经济性方面做了比较。为 5 0MW机组的改造提供了一定的依据和经验。更多还原

【Abstract】 The causes of blade breakage in low-pressure cylinder of a C50-90/13 type steam turbine have been analysed, several resolving countermeasures, such as replacing blades of thirteenth grade, retrofitting flow passage of low-pressure cylinder, and retrofitting flow passage of the entire turbine etc. are put forward, and a comparison from aspects of retrofit expenses and economic issues being made, providing a certain basis and experience for retrofitting 50MW units in the future.更多还原