| 摘要 |
PROBLEM TO BE SOLVED: To provide a small gas turbine with a structure capable of effectively restraining a temperature increase of lubricating oil supplied to a bearing. SOLUTION: The small gas turbine 1 is provided with a turbine 101, the bearing 110 to support a rotary shaft 105, and a casing 112 being located on a circumference of the bearing 110 and housing the bearing 110. The casing 112 is provided with a oil supply passage 113, and a pipe 2 to be a passage for the lubricating oil supplied to the bearing is inserted and set in the oil supply passage 113 having a spacing 3 from an internal surface of the oil supply passage. The spacing 3 functions as a heat insulating layer restraining heat transfer from the oil supply passage 113 to the inside of the pipe 2 at operation of the turbine. COPYRIGHT: (C)2004,JPO
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