Compression ring sealing device with end gap control and a method of manufacturing same

• US 20030127802A1
• Filed: 01/08/2002
• Published: 07/10/2003
• Est. Priority Date: 01/08/2002
• Status: Active Grant

• Current Assignee: Dresser-Rand Company (Siemens AG)
• Original Assignee: Dresser-Rand Company (Siemens AG)
• Inventors: Bennitt, Robert A., Schnautz, Larry A., Schnautz, Donna A.
• Granted Patent: US 6,712,363 B2
• Time in Patent Office: Days
• US Class Current: 277/493
• CPC Class Codes: F16J 9/06 using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
• CPC Class Codes: F16J 9/16 obtained by stacking of rings

Abstract

A sealing method and method according to which a first and second ring are each provided with split ends, and an arcuate lip extends from one end portion of the each ring and in an axial direction relative to the ring and projects outwardly from the face of the ring. The rings are disposed in an interlocking relationship with the second portion of the lip of the first ring extending within, and in a closely spaced relation to, the corresponding inner surface of the second ring; and with the second portion of each lip of the second ring extending within, and in a closely spaced relation to, the corresponding inner surface of the first ring.

Claims

1. A sealing device comprising a ring having an inner surface, a face and two split ends;

a first arcuate lip formed integrally with a portion of the ring including one of the ends, the lip extending in an axial direction relative to the ring and projecting outwardly from the face of the ring; and

a second arcuate lip formed integrally with another portion of the ring including the other end, the second lip extending in an axial direction relative to the ring and projecting outwardly from the face of the ring.

2. The device of claim 1 wherein the lip also extends radially from an inner portion of the ring portion.

3. The device of claim 1 wherein each lip extends from its corresponding ring end arcuately for approximately 90 degrees.

4. The device of claim 1 wherein the thickness of the axially-extending portion of each lip is approximately equal to the thickness of the ring.

5. A method of manufacturing a sealing device comprising forming a ring with split ends;

molding a first arcuate lip to a portion of the ring including one end, which lip extends in an axial direction relative to the ring and projects from a face of the ring; and

molding a second arcuate lip to the other end portion of the ring which latter lip extends in an axial direction relative to the ring and projects from the face of the ring.

6. The method of claim 5 wherein each lip also extends radially from an inner portion of the corresponding ring portion.

7. The method of claim 5 wherein each lip extends from its corresponding ring end arcuately for approximately 90 degrees.

8. A sealing device comprising a first ring having an inner surface, a face and two split ends;

a first lip formed integrally with a portion of the ring including one of the ends, the lip extending in an axial direction relative to the ring and projecting outwardly from the face of the ring;

a second ring having an inner surface, a face and two split ends; and

a second lip formed integrally with a portion of the second ring including one of the ends, the second lip extending in an axial direction relative to the second ring and projecting outwardly from the face of the second ring;

the rings disposed in an interlocking relationship with the first lip extending within, and in a closely spaced relation to, the corresponding inner surface of the second ring, and with the second lip extending within, and in a closely spaced relation to, the corresponding inner surface of the first ring.

9. The device of claim 8 wherein the corresponding inner surface of each ring is formed on the other portion of each ring.

10. The device of claim 8 wherein each lip also extends in a radial direction from the inner surface of the corresponding ring portion.

11. The device of claim 8 further comprising an additional lip formed integrally with another portion of each ring including the other end, each additional lip extending in an axial direction relative to its corresponding ring and projecting outwardly from the face of its corresponding ring.

12. The device of claim 11 wherein the additional lip of the first ring extends within, and in a closely spaced relation to, the corresponding inner surface of the second ring, and wherein the additional lip of the second ring extends within, and in a closely spaced relation to, the corresponding inner surface of the first ring.

13. The device of claim 11 wherein each additional lip also extends in a radial direction from the inner surface of its corresponding ring portion.

14. The device of claim 13 wherein the thickness of the axially-extending portion of each lip is approximately equal to the thickness of its corresponding ring.

15. The device of claim 8 wherein each lip extends from its corresponding ring end arcuately for approximately 90 degrees, and wherein the additional lip of each ring extends in an opposite direction to the first-mentioned lip of each ring.

16. A method of manufacturing a sealing device comprising providing a ring having an inner surface, a face and two split ends;

molding a first arcuate lip integrally with a portion of the ring including one of the ends, the lip extending in an axial direction relative to the ring and projecting outwardly from the face of the ring; and

molding a second arcuate lip formed integrally with another portion of the ring including the other end, the second lip extending in an axial direction relative to the ring and projecting outwardly from the face of the ring.

17. The method of claim 16 wherein the lip also extends radially from an inner portion of the ring portion.

18. The method of claim 16 wherein each lip extends from its corresponding ring end arcuately for approximately 90 degrees.

19. The method of claim 16 wherein the thickness of the axially-extending portion of each lip is approximately equal to the thickness of the ring.

20. A method of manufacturing a sealing device comprising providing a first ring having an inner surface, a face and two split ends;

molding a first lip on a portion of the ring including one of the ends so that the lip extends in an axial direction relative to the ring and projects outwardly from the face of the ring;

providing a second ring having an inner surface, a face and two split ends; and

molding a second lip on a portion of the second ring including one of the ends so that the second lip extends in an axial direction relative to the second ring and projects outwardly from the face of the second ring; and

engaging the rings in an interlocking relationship with the first lip extending within, and in a closely spaced relation to, the corresponding inner surface of the second ring, and with the second lip extending within, and in a closely spaced relation to, the corresponding inner surface of the first ring.

21. The method of claim 20 wherein the corresponding inner surface of each ring is formed on the other portion of each ring.

22. The method of claim 20 wherein each lip also extends in a radial direction from the inner surface of the corresponding ring portion.

23. The method of claim 20 further comprising molding an additional lip with another portion of each ring including the other end, each additional lip extending in an axial direction relative to its corresponding ring and projecting outwardly from the face of its corresponding ring.

24. The method of claim 23 wherein the additional lip of the first ring extends within, and in a closely spaced relation to, the corresponding inner surface of the second ring, and wherein the additional lip of the second ring extends within, and in a closely spaced relation to, the corresponding inner surface of the first ring.

25. The method of claim 23 wherein each additional lip also extends in a radial direction from the inner surface of its corresponding ring portion.

26. The method of claim 25 wherein the thickness of the axially-extending portion of each lip is approximately equal to the thickness of its corresponding ring.

27. The method of claim 20 wherein each lip extends from its corresponding ring end arcuately for approximately 90 degrees with the additional lip of each ring extending in an opposite direction to the first-mentioned lip of each ring.