| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress unstable behavior by a lubricating oil supply device during start-up of a steam turbine. <P>SOLUTION: According to the embodiment, a steam turbine lubricating oil supply device includes: an oil tank 21 disposed at a position lower than a rotary shaft 13; a main oil pump 20 driven by a steam turbine 11; an oil turbine 29 disposed in the oil tank 21 and driven by lubricating oil whose pressure is raised by the main oil pump 20; a main oil pump check valve 32 disposed in the middle of a main oil discharge pipe 31 in the oil tank 21; a booster oil pump 30 driven by the oil turbine 29; a suction oil pump 24 driven by an electric motor 28; a booster oil pump check valve 35 disposed in a main oil pump suction pipe 34; and a turning oil pump 22 driven by an electric motor 26 and feeding lubricating oil to an oil supply pipe 50 to be merged with lubricating oil on a downstream side of the oil turbine 29. <P>COPYRIGHT: (C)2013,JPO&INPIT |
