LUBRICATING OIL FEEDING DEVICE AND DOUBLE STRUCTURE ROTARY SHAFT FOR HIGH-SPEED ROTARY MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a lubricating oil feeding device and a double structure rotary shaft capable of surely feeding lubricating oil to both ends of a high-speed rotary shaft, greatly reducing weight by halving the length of external piping, easily assuring dynamic balance at high-speed rotation, and suppressing shaft vibration in an engine operation rotation zone in a high-speed rotary machine such as a gas turbine. SOLUTION: This device is provided with a thin hollow cylindrical tube 12 that surrounds the high-speed rotary shaft and is coaxially attached between bearings at both ends of the high-speed rotary shaft 2, and a center support mechanism 14 supporting a center in the axial direction of the hollow cylindrical tube from the outside and rotating in synchronization with the thin hollow cylindrical tube. Lubricating oil is fed from one bearing to the other bearing through a gap between the hollow cylindrical tube 12 and the high speed rotary shaft 2. COPYRIGHT: (C)2005,JPO&NCIPI