POWER GENERATION SYSTEM, IN WHICH COSTS FOR PIPES ARE REDUCED BY REDUCING THE TEMPERATURE AND PRESSURE OF HIGH PRESSURE STEAM

摘要

PURPOSE: A power generation system is provided increase the efficiency of generating power with a reduced cost for pipes by reducing the temperature and pressure of high pressure steam.;CONSTITUTION: A power generation system comprises a turbine unit(10), a water supply pump(40), a boiler(50), an auxiliary turbine(60), a low-pressure steam supply line(70), and a high pressure steam supply line(80). As to the boiler, the water from the water supply pump flows into a first pipeline, and is converted into main steam to be supplied to a high pressure steam turbine. The steam discharged from the high pressure steam turbine flows into a third pipeline, and is converted into reheat steam to be supplied to a fourth pipeline. The auxiliary turbine generates driving power by being supplied with the steam. The low-pressure steam supply line supplies low pressure steam to be used as a low pressure source for the auxiliary turbine. The high pressure steam supply line additionally supplies high pressure steam to be used as a high pressure steam source when the steam supplied from the low-pressure steam supply line is insufficient.;COPYRIGHT KIPO 2013;[Reference numerals] (52) First to fifth superheaters; (54) Reheater; (60) Auxiliary turbine