POWER PLANT WITH GAS TURBINE COMBINED CYCLE MARINE PROPULSION PLANT

摘要

PURPOSE:To promote the thermal efficiency and reduce the fuel consumption by providing a pair of gas turbine plants to introduce directly high temperature combustion gas to the gas boilers to bypass ouput turbines of the gas turbines for making effective use of the vapor of exhaust gas boilers of these plants. CONSTITUTION:A pair of propulsion plants 20 and 21 are provided to drive propeller shafts 8 and 9 on both sides of a vessel and these plants 20 and 21 are respectively provided with a bleeding pipe 46 to introduce a part of high temperature combustion gas introduced from a gas generator 42 to an output turbine 45 directly into exhaust gas boilers 24 and 25 bypassing the output turbine 45. The vapor obtained at exhaust gas boilers 24 and 25 is supplied to vapour turbines 31 and 30 provided on reduction units 29 and 28 driven by gas turbines 23 and 22 of the plants 21 and 20 on the other side via the vapor supply pipes 32 and 33. The vapor passing through vapor turbines 31 and 30 is returned to exhaust gas boilers 25 and 24 via steam-condensers 34 and 35 and feed water pumps 38 and 39.