| 摘要 |
PROBLEM TO BE SOLVED: To provide a test device for a high-speed rotary body which is made to prevent lubricating oil from leaking to back space along the back side of an impeller, and which is made able to properly hold a pressure in the back space when the high-speed rotary body, such as a compressor or a supercharger or the like, is tested. SOLUTION: The pressure in the back space 27 along the back side of the impeller 17 of the high-speed rotary body is tested by a pressure sensor 29 and a flow control valve 14 of a discharge pipe 6, which is connected to a voltes chamber 21, is controlled by a controller 30 based on a detection signal of the sensor 29. It is possible to prevent the lubricating oil 28 from leaking to the back space 27 through a clearance of labyrinths 25 by properly holding the pressure in the back space 27.
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