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本文简要介绍了660MW超临界直接空冷机组三缸四排汽和两缸两排汽汽轮机的结构特点、典型工况下的经济指标和主厂房结构特点等。针对这2种机型的特点,进行了综合分析,提出在660MW超临界直接空冷机组中宜选用三缸四排汽汽轮机的方案。
This paper briefly introduces the structural characteristics of three-cylinder four-row steam turbine and two-cylinder two-stage steam turbine of 660MW supercritical direct air-cooling unit, the economic indicators under typical operating conditions and the structural characteristics of the main plant. According to the characteristics of the two models, a comprehensive analysis is made and a proposal is put forward that the three-cylinder four-row steam turbine should be selected in the 660MW supercritical direct air-cooling unit.