| 摘要 |
The invention refers to a device for sealing a passage ( 1 ) through a stationary wall ( 2 ) between a first space ( 3 ), which is arranged to contain a liquid. A rotatable shaft ( 5 ) is intended to extend in the passage through the wall in such a way that a gap is formed, which extends around the shaft between the shaft and the wall. A chamber ( 8 ), containing liquid, is arranged between the gap and the first space and extends around the axis. A rotatable disc ( 14 ) is fixedly arranged on the shaft and exends outwardly from the shaft into said chamber. Means ( 17', 17 '') are arranged to force the liquid in the chamber to rotate at a rotary speed substantially exceeding the rotary speed of the shaft. |
