| 摘要 |
A seal device 20 accommodates axial displacement between a housing 23 and a shaft 22 of an item of rotating equipment 21. The device 20 has a bearing 31 positioned between a rotor 24 located on the shaft 22 and a stator 25 connected to the housing 23. Contact between the stator 25 and bearing 31, and the bearing 31 and the rotor 24 is made via shoulders (at 30) which act to limit the amount by which the rotor 24 may move along the shaft 22, which allows the shaft 22 to sealingly move through the rotor 24 and so the device 20 provides sealing integrity when the shaft 22 is both idle and operational. The sealing device 20 may be used, for example, in a refiner where a large amount shaft displacement occurs when impeller clearances are set. |
