| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating oil feeding device for a large-size rotating machine to reduce a power for a flow of lubrication oil to an oil clearing device. SOLUTION: The lubricating oil feeding device 1 is constituted so that branch piping 2 attached to a fret part 41, disposed approximately horizontally of return oil piping 4 is used as piping to feed lubricating oil 99 to the oil clearing device 6 as opposed to conventional examples. In this case, the large-size rotating machine is installed as the second floor of a building and a lubricating oil tank 8 at the first floor of the building, the difference in elevation of approximately 5 [m] can be provided between a mounting part 21 of the branch piping 2 on the return piping 4 and a mounting part 3 of outlet piping 94 on the lubricating oil tank 8. The difference of elevation can fully provide a given pressure difference, needed for a flow of a given amount of high temperature lubricating oil 99 to the oil clearing device 6 returned from the large-size rotating machine.
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