| 摘要 |
A sealing system for the type of hydraulic machine which comprises a runner or rotor with a hub body (1) and with blades or vanes (4) which are rotatably mounted in oil lubricated bearings (7, 8) in the hub body, comprising sealing means provided between said bearings and surrounding water is provided such that said sealing means comprise a circumferential first sealing member (60) and a second circumferential sealing member (61) inside of the first sealing member, that a circumferential space (65) exists between said first and second sealing members, and that a circumferential space is connected, via a channel (64), with water which has a pressure that is greater than the oil pressure in said bearings.
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