| 摘要 |
PROBLEM TO BE SOLVED: To provide a back pressure extraction steam turbine facility and its operating method for effectively suppressing windage loss while maintaining effective utilization of a back pressure of a turbine extract and a turbine exhaust steam without impairing conventional functions. SOLUTION: The back pressure extraction steam turbine facility of the present invention is composed of the back pressure extraction steam turbine 100, a steam generator 107 for supplying steam to the back pressure extraction steam turbine 100 via a first steam header 109, and a plurality of extraction steam/exhaust steam headers 111, 112 being supplied with extracted steam or exhausted steam from the extraction back pressure steam turbine 100. Means 109, 117 111, 128 for supplying low-temperature steam are also provided, when the final stage of the back pressure extraction steam turbine 100 is overheated due to windage loss. COPYRIGHT: (C)2006,JPO&NCIPI
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