Structure of steam turbine, and steam generation system, and the modus operandi null for steam turbine

摘要

PURPOSE:To utilize a low calorie heat source which is inexpensive but unstable by forming a partition plate between a high pressure part final stage and a medium pressure part initial stage that are made close to each other after setting the direction of steam flow at the high pressure part identical to that of the medium pressure part. CONSTITUTION:The steam flow directions at a high pressure part 16 and a medium pressure part 18 are set identical to each other. As a result, a high pressure part final stage 19 and a medium pressure part initial stage 21 are made close and opposed to each other. And a partitioning plate 20 is provided in order to partition the mutually opposing parts, while a high/medium pressure communicating valve 17 is provided in a such structure that can connect/disconnect the high pressure part 16 to/from the medium pressure part 18 both of which are partitioned by the partitioning plate 20. Thereby, the device in this title is constituted such that the changeover from/to reheat operating to/from non-reheat operating can be thus carried out easily and with high efficiency, and its adaptation property is made high with respect to the change of steam conditions while its size is made compact. Therefore, it is possible to adapt to the change of the generated steam condition by a heat source which is unstable with low calorie.