| 摘要 |
PURPOSE:To permit reduction of the thermal stress of a turbine rotor and shorten the starting time by allowing the captioned power plant to be equipped with each turbine bypath-passage for super-high, high, and low pressures. CONSTITUTION:The superheated steam passing through a superheater 1 in the captioned plant is supplied into a superhigh-pressure turbine 5 through a main- steam stop valve 3 and a reducing valve 4, and performs work, and then supplied into a high-pressure turbine 12 through the first reheater 8, and further supplied into a medium-pressure turbine 19 and a low-pressure turbine 20 through the second reheater 15. In this case, the main steam pipe 2 and the downstream side of the check valve 6 for the first low-temperature reheated steam pipe 7 are connected through a superhigh-pressure turbine bypath conduit 30, and the first high-temperature reheated steam pipe 9 and the downstream side of the check valve 13 for the second low-temperature reheated steam pipe 14 are connected through a high-pressure turbine bypath conduit 32. Further, the second high-temperature reheated steam pipe 16 is connected to a condenser 22 through a low-pressure turbine bypath conduit 35. |
