锦江水电厂机组增容改造的实践

Capacity-increasing transformation of hydro gener ating units of Jinjiang Hydropower Station

锦江水电厂 1号、 2号机组转轮发现有多处裂纹 ,个别叶片随时可能断裂 ,严重威胁着电厂的安全生产。通过计算、调研 ,确定重新更换不锈钢转轮的改造方案 ,待新转轮投产出力达到预期要求后 ,再把机组出力提高至 15 4MW的增容方案。机组改造后运行效果很好 。

Many cracks were found in the impellers of Unit 1 and 2 in Jinjiang Hydropower Station, which exposed some of the blades to the risk of fracture and seriously threatened the safety operation of the station. Through calculation and investigation, a capacity increasing transformation plan was determined, i e , to replace the original impellers with proof stainless steel ones, and raise the unit output to 15 4 MW after the new impellers satisfy the requirements. Satisfactory results were obtained after the transformation.