Design and operating experience of 1000MW steam turbine for the Chugoku electric power Co., Inc, misumi No.1 unit

摘要

Steam conditions for large-capacity fossil-fuel-burning thermal power plant in Japan have conventionally been24.1 MPa 538/566 deg C. Mitsubishi Heavy Industries, Ltd. (MHI)has, through wide-scale development programs, set techniques forsteam turbine design and materials at a high steam temperature andsteam conditions of 24.1 MPa and 593/593 deg C applied to large-capacity 1000 MW turbines, the Matsuura No.2 Unit for theElectric Power Development Co., Ltd. Based on our high-temperature design development, MHI has developed andmanufactured the 1000 MW turbine, Misumi No.1 Unit, forChugoku Electric Power Co., Inc., for the first time in the worldwith steam condition of 24.5 MPa and 600 deg C and a steamreheating temperature of 600 deg C. The first steam admission ofthis unit was completed in December 1997, and underwent testruns and other tests before starting commercial operation in June1998. This paper describes the design and operating features ofMisumi No.1 Unit.