Abstract
A compression ring, has a ring running surface (2) on a first butt end region, a ring running surface (2) on a second butt end region, a ring inner surface (4), a top ring flank surface (6) and a bottom ring flank surface (8), wherein the ring has overlapping first and second butt end regions. The first butt end region has at least one protrusion (10) in the circumferential direction, and the second butt end region has at least one recess (12) in the circumferential direction. The at least one protrusion (10) forms at least one axial and/or radial overlap surface, and the at least one recess (12) forms at least one parallel surface, which lies at least partially opposite to the axial and/or radial overlap surface in order to shift parallel to one another in response to a change of the butt play. At least one of the surfaces, which can be shifted parallel to one another, is provided with an axial wear element (14) and/or with a radial wear element (14).
Claims
14. A compression ring, comprising: a ring running surface on a first butt end region, a ring running surface on a second butt end region, a ring inner surface. a top ring flank surface and a bottom ring flank surface. wherein the ring has overlapping butt end regions, wherein the first butt end region has at least one protrusion in the circumferential direction, and the second butt end region has at least one recess in the circumferential direction, wherein the at least one protrusion forms at least one axial and/or radial overlap surface, and the at least one recess forms at least one parallel surface, which lies at least partially opposite to the axial and/or radial overlap surface in order to shift parallel to one another in response to a change of the butt play, wherein at least one of the surfaces, which can be shifted parallel to one another, is provided with an axial wear element and/or with a radial wear element, wherein the wear element is made of a temperature-resistant metallic material, wherein the material of the wear element has a lower wear resistance than the base material of the compression ring.
15. The compression ring according to claim 14, wherein the ring has the overlapping butt end regions in the nominal diameter.
16. The compression ring according to claim 14, wherein the surfaces, which can be shifted parallel to one another, lie at least partially opposite one another in the nominal diameter.
17. The compression ring according to claim 14, wherein the wear element has a minimum thickness of 0.005 mm.
18. The compression ring according to claim 14, wherein the wear element has different wear layers arranged one on top of the other, which include different materials.
19. The compression ring according to claim 14, wherein the wear element overlaps or covers, respectively, 10-100% of the surface, on which the wear element is arranged.
20. The compression ring according to claim 14, wherein the wear element is arranged in the axial direction and/or radial direction at a distance from an edge of the surface on which the wear element is arranged.
21. The compression ring according to claim 14, wherein the butt end regions are formed with a single step.
22. The compression ring according to claim 14, wherein the butt end regions are formed with two steps.
23. The compression ring according to claim 14, wherein the butt end regions are formed in a staircase-shaped manner.
24. The compression ring according to claim 14, wherein at least one surface, which lies in a plane, which is spanned by a ring axial and ring radial direction and which is arranged in the second butt end region, has a first structure, which engages with at least one surface, which lies in one plane, which is spanned by a ring axial and ring radial direction and which is arranged in the first butt end region.
25. The compression ring according to claim 14, wherein a strength of the wear element is in the range of 1-80% less than a strength of the compression ring.
26. A method for countersinking a compression ring according to claim 14, wherein the method comprises the steps of: applying a wear element by means of wire rolling into a groove, laser remelting, laser metal deposition, deposition welding, thermal spraying and/or galvanic or chemical deposition or sintering and moving the butt end regions against one another in order to create a wear of the wear element, until the nominal size in the axial and/or radial direction of the compression ring is reached.
27. The compression ring according to claim 25, wherein the range is 0-40%.
28. The compression ring according to claim 25, wherein the range is 1-20%.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Exemplary embodiments of the invention will be described in more detail below with reference to the drawings, wherein
[0026] Fig. I shows butt end regions having axial butt seal of the compression ring according to the invention and
[0027] FIG. 2 shows butt end regions having axial and radial butt seal of the compression ring according to the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
[0028] FIG. 1 shows butt end regions having axial butt seal of the compression ring according to the invention. The compression ring comprises a ring running surface 2 on a first butt end region, a ring running surface 2 on a second butt end region, a ring inner surface 4, a top ring flank surface 6 and a bottom ring flank surface 8. A first butt end region has a cuboidal protrusion 10 in the circumferential direction and a second butt end region bas a matching cuboidal recess 12 likewise in the circumferential direction. The protrusion 10 and the recess 12 form an overlap region of two respective opposite surfaces with the same orientation in the axial and radial direction. At least in the nominal diameter or nominal size, respectively, i.e., the theoretical size provided for the installation of the ring, the surfaces lying opposite one another lie at least partially opposite one another. A wear element 14, which does not completely cover the surface, to which it is applied, and which is arranged centrally in the radial direction and offset in the direction of the ring gap in the circumferential direction, is arranged on the surface in recess 12, which is perpendicular to the axial direction. The wear element 14 is additionally arranged spaced apart from the edges of the surface, to which it is applied.
[0029] It can further be seen in FIG. 1 that both butt end regions are formed with two steps, wherein a radial dimension of the protrusion 10 corresponds to approximately of the radial nominal size of the compression ring and an axial dimension of the protrusion 10 corresponds to approximately of the axial nominal size of the compression ring. The first butt end region has a first butt end, which corresponds to the highest point of the protrusion 10 and which is located in a plane, which is spanned by a ring axial and ring radial direction. The second butt end region has a surface, which is likewise located in a plane, which is spanned by a ring axial and ring radial direction, but which corresponds to the lowest point of the recess 12. The first butt end as well as the surface lie opposite one another.
[0030] The following surfaces can come into surface contact in FIG. 1: the surface on protrusion 10, which is perpendicular to the axial direction, with the surface on recess 12, which is perpendicular to the axial direction, as well as the surface on protrusion 10, which is perpendicular to the radial direction, with the surface on recess 12, which is perpendicular to the radial direction, and the surface on protrusion 10, which is perpendicular to the circumferential direction and which corresponds to the highest point of the protrusion 10. with the surface on recess 12, which is perpendicular to the circumferential direction and which corresponds to the lowest point of the recess 12. The highest point of the recess 12 forms a second butt end and cannot come into surface contact with the opposite surface in the first butt end region because said surface has a curvature.
[0031] FIG. 2 shows butt end regions having axial and radial butt seal of the compression ring according to the invention. The compression ring comprises a ring running surface 2 on a first butt end region, a ring running surface 2 on a second butt end region, a ring inner surface 4, a top ring flank surface 6 and a bottom ring flank surface 8. A first butt end region has a cuboidal protrusion 10 in the circumferential direction, and a second butt end region has a matching cuboidal recess 12 likewise in the circumferential direction. The protrusion 10 and the recess 12 form an overlap region of two respective opposite surfaces with the same orientation in the axial and radial direction. At least in the nominal diameter or nominal size, respectively, i.e., the theoretical size provided for the installation of the ring, the surfaces lying opposite one another lie at least partially opposite one another An axial wear element 14 is arranged on the surface in recess 12, which is perpendicular to the axial direction, and a radial wear element 14 is arranged on the surface in recess 12, which is perpendicular to the radial direction. Both wear elements 14, 14 do not completely cover the surface, to which they are applied, and are arranged on the respective application surface in the radial direction or axial direction, respectively, and centrally on this surface in the circumferential direction. Wear elements 14, 14 are additionally arranged spaced apart from the edges of the surface, to which they are applied.
[0032] It can further be seen m FIG. 2 that both butt end regions are formed in two steps, wherein a radial dimension of the protrusion 10 corresponds to approximately of the radial nominal size of the compression ring, and an axial dimension of the protrusion 10 corresponds to approximately of the axial nominal size of the compression ring. The first butt end region has a first butt end, which corresponds to the highest point of the protrusion 10 and is located in a plane, which is spanned by a ring axial and ring radial direction. The second butt end region has a surface, on which a plane is located, which is likewise spanned by a ring axial and ring radial direction, but which corresponds to the lowest point of the recess 12. The first butt end as well as the surface lie opposite one another.
[0033] The following surfaces can come into surface contact in FIG. 2: the surface on protrusion 10, which is perpendicular to the axial direction, with the surface on recess 12, which is perpendicular to the axial direction, the surface on protrusion 10, which is perpendicular to the radial direction, with the surface on recess 12, which is perpendicular to the radial direction, and the surface on protrusion 10, which is perpendicular to the circumferential direction and which corresponds to the highest point of the protrusion 10. with the surface on recess 12, which is perpendicular to the circumferential direction and which corresponds to the lowest point of the recess 12. The highest point of the recess 12 forms a second butt end and cannot come into surface contact with the opposite surface in the first butt end region because said surface has a curvature.
LIST OF REFERENCE NUMERALS
[0034] 2 ring running surface on first butt end region [0035] 2 ring running surface on second butt end region [0036] 4 ring inner surface [0037] 6 top ring flank surface [0038] 8 bottom ring flank surface [0039] 10 protrusion [0040] 12 recess [0041] 14 axial wear element [0042] 14 radial wear element
