Device for removal of lubricant from a bearing assembly

• US 5,494,355 A
• Filed: 01/05/1995
• Issued: 02/27/1996
• Est. Priority Date: 07/07/1992
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Haase, Detlef
• Primary Examiner(s): Hannon, Thomas R.
• Application Number:
  US08/369,189
• Time in Patent Office: 418 Days
• Field of Search: 384/130, 384/135, 384/136, 384/144, 384/397, 384/400, 384/403, 384/465, 384/473
• US Class Current: 384/144
• CPC Class Codes: F01D 9/065 Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids see also F01D25/16, F01D25/24 and F01D25/26
• CPC Class Codes: F05D 2260/602 Drainage
• CPC Class Codes: F16C 33/10 Construction relative to lubrication lubrication in general F16N
• CPC Class Codes: F16N 31/00 Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus oil separators for separating oil from exhaust steam F22G
• CPC Class Codes: F16N 7/36 with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication

Abstract

A bearing assembly includes a shaft rotating about an axis and a bearing being acted upon by a liquid lubricant and supporting the shaft. A device for removing the lubricant from the bearing assembly includes at least one sealing assembly adjacent the bearing. The sealing assembly has a seal surrounding the shaft and a collector chamber disposed between the seal and the bearing. The collector chamber surrounds the shaft and receives the lubricant from the bearing along the shaft. The lubricant is removed from the collector chamber through a drain conduit. According to one embodiment, a funnel protrudes into the collector chamber for collecting the lubricant and removing the lubricant to the drain conduit. According to another embodiment, the collector chamber has a wall being approximately rectilinear relative to the axis and has a cross section perpendicular to the axis being formed by at least one spiral section encompassing the axis and one intermediate section closing the wall, and the drain conduit discharges into the wall in the region of the intermediate section.

Claims

1. A device for removing a liquid lubricant from a bearing assembly having a shaft rotating about an axis and a bearing being acted upon by the lubricant and supporting the shaft, comprising:

at least one sealing assembly adjacent the bearing, said at least one sealing assembly having a seal surrounding the shaft and a collector chamber disposed between said seal and the bearing, said collector chamber surrounding the shaft and receiving the lubricant from the bearing along the shaft, a drain conduit through which the lubricant is removed from said collector chamber, and a funnel protruding into said collector chamber for collecting the lubricant and removing the lubricant to said drain conduit.

2. The device according to claim 1, wherein said funnel is disposed in the immediate vicinity of the shaft.

3. The device according to claim 1, wherein said drain conduit is oriented approximately vertically.

4. The device according to claim 1, including an injection line being connected to said collector chamber for removal of the lubricant, said injection line forming a jet pump together with said drain conduit, and said injection line being a driving medium line of said jet pump.

5. The device according to claim 4, including a suction line being connected to said drain conduit and communicating with said seal for removal of a fluid by suction.

6. The device according to claim 5, including another second suction line being connected to said drain conduit and communicating with said collector chamber for the removal of a fluid by suction.

7. The device according to claim 4, including a suction line being connected to said drain conduit and communicating with said seal for removing a fluid selected from the group consisting of lubricant, steam, water and air by suction.

8. The device according to claim 7, including another second suction line being connected to said drain conduit and communicating with said collector chamber for the removal of a fluid selected from the group consisting of lubricant, steam, water and air by suction.

9. The device according to claim 1, wherein the bearing assembly is part of a turbine system.

10. The device according to claim 1, wherein the bearing assembly is part of a steam turbine system.

11. The device according to claim 10, wherein the bearing assembly is an end journal bearing disposed in a steam chamber of the turbine system.

12. The device according to claim 1, wherein the bearing is a slide bearing.

13. A device for removing a liquid lubricant from a bearing assembly having a shaft rotating about an axis and a bearing being acted upon by the lubricant and supporting the shaft, comprising:

at least one sealing assembly adjacent the bearing, said at least one sealing assembly having a seal surrounding the shaft and a collector chamber disposed between said seal and the bearing, said collector chamber surrounding the shaft and receiving the lubricant from the bearing along the shaft, said collector chamber having a wall being approximately rectilinear relative to the axis and having a cross section perpendicular to the axis being formed by at least one spiral section encompassing the axis and one intermediate section closing said wall, and a drain conduit receiving the lubricant removed from said collector chamber and discharging into said wall in the region of said intermediate section.

14. The device according to claim 13, wherein said drain conduit is oriented approximately vertically.

15. The device according to claim 13, including an injection line being connected to said collector chamber for removal of the lubricant, said injection line forming a jet pump together with said drain conduit, and said injection line being a driving medium line of said jet pump.

16. The device according to claim 15, including a suction line being connected to said drain conduit and communicating with said seal for removal of a fluid by suction.

17. The device according to claim 16, including another second suction line being connected to said drain conduit and communicating with said collector chamber for the removal of a fluid by suction.

18. The device according to claim 15, including a suction line being connected to said drain conduit and communicating with said seal for removing a fluid selected from the group consisting of lubricant, steam, water and air by suction.

19. The device according to claim 18, including another second suction line being connected to said drain conduit and communicating with said collector chamber for the removal of a fluid selected from the group consisting of lubricant, steam, water and air by suction.

20. The device according to claim 13, wherein the bearing assembly is part of a turbine system.

21. The device according-to claim 13, wherein the bearing assembly is part of a steam turbine system.

22. The device according to claim 21, wherein the bearing assembly is an end journal bearing disposed in a steam chamber of the turbine system.

23. The device according to claim 13, wherein the bearing is a slide bearing.

24. The device according to claim 13, including a funnel protruding into said collector chamber for collecting the lubricant and removing the lubricant to said drain conduit.

25. The device according to claim 24, wherein said funnel is disposed in the immediate vicinity of the shaft.