Abstract:
PROBLEM TO BE SOLVED: To improve power generation efficiency by preventing hammering, and to suppress increase in a scale of the whole system.SOLUTION: A power generation system includes: a main turbine 6 which operates while the system is in operation; and one or more sub-turbines 4A, 4B which operate or stop according to the situation while the system is in operation. The system also includes a main speed reducer 50 further including an idle gear 53 that is disposed between a main drive gear 51 and a main driven gear 52 and transmits rotation of the main drive gear 51 to the main driven gear 52. The output shaft of a first sub-turbine 4A included in the one or more sub-turbines 4A, 4B is connected to the main driven gear 52 via a clutch 66. The first sub-turbine 4A and the main turbine 6 are disposed axially in the same side with reference to the main speed reducer 50, while the main turbine 6 and a power generator 2 are disposed axially in opposite sides to each other with reference to the main reducer 50.
Abstract:
PROBLEM TO BE SOLVED: To increase the efficiency of an entire steam turbine plant and reduce use of expensive materials by increasing the pressure and temperature of exhaust steam of a high pressure turbine in a steam turbine to return them to reheat pressure and temperature similar to those in a conventional USC plant.SOLUTION: A steam turbine plant facility has a variable speed high-speed turbine installed at the top of a boiler outlet and supplies steam from the outlet to a high-pressure turbine for electric power generation through high-pressure and high-temperature piping. In the steam turbine plant facility, the exhaust steam of the high-pressure turbine for electric power generation is introduced to a compressor driven by the variable speed high-speed turbine at the boiler top via low-pressure reheat steam piping, the low-temperature reheat steam is increased in pressure and temperature by the power of the variable speed high-speed turbine and then the outlet steam is supplied to a reheater of the boiler.
Abstract:
PROBLEM TO BE SOLVED: To save energy by placing priority on driving by use of a steam engine when an air compressor is driven by use of the steam engine and an electric motor. SOLUTION: A steam engine 4 and an electric motor 10 are provided to drive air compressors 5 and 11, respectively. Compressed air from the air compressors 5 and 11 is supplied to a device using compressed air via a common air tank 21. Steam is supplied to the steam engine 4 through a steam supply path 6, and the steam after using in the steam engine 4 is supplied to the device using steam through a steam dischrage path 7. A pressure sensor 19 provided in a steam header 15 ahead of the steam discharge path 7 monitors steam pressure. A pressure sensor 22 provided in the air tank 21 monitors air pressure. A steam supply valve 9 is controlled based on the steam pressure and the air pressure, and the electric motor 10 is controlled based on the air pressure. The steam engine 4 is operated prior to the electric motor 10 by shifting the target value of the air pressure. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To tap off motive power so that the motive power is divided over various rotary spools of a multi-spool turbine engine, as required. SOLUTION: This device for generating electric power in the multi-spool gas turbine engine to drive an electric machine 10 comprises at least one first rotary spool 69 such as a low pressure pool, and a second rotary spool 24 such as a high pressure spool. In the device, the electric machine 10 is of a twin rotor type having a first rotor 13 and a second rotor 14. The first rotor 13 is mechanically connected to the first rotary spool 69, and the second rotor is mechanically connected to the second rotary spool 24. COPYRIGHT: (C)2009,JPO&INPIT