Aiming at the problems of low efficiency,large temperature difference between upper and lower casing,and large steam leakage of seals,the flow-pathretrofit of a CC330MW steam turbine was carried out,applying the state-of-the-art technologies,including integrated HP steam inlet chamber-inner cylinder structure,single-layer IP casing,optimized steam seal type,and high-efficiency wide-load technology.Satisfying the supply of multi-parameter industrial steams,the turbine efficiency was improved.Meanwhile the unit wide-load operation capacity and reliability were significantly improved.The results of unit performance test before and after flow-path retrofit show that the unit efficiency is improved and the coal consumption of power supply is reduced under the rated load and partial load conditions.egulation,the adjustment time of the coal-fired power plant with steam turbine high-arranged and conventional arranged is almost the same.
关键词
通流改造/综合提效/高效宽负荷叶片技术/热力性能试验
Key words
turbine retrofit/efficiency improvement/high-efficiency wide-load technology/turbine performance test
维普
万方数据