US 12,071,940 B2
Packaging ring with relief opening
Bernhard Spiegl, Vienna (AT); Andreas Kaufmann, Vienna (AT); Martin Lagler, Vienna (AT); Marian Janko-Grasslober, Vienna (AT); and Matthias Kornfeld, Brunn/Geb. (AT)
Assigned to Hoerbiger Wien GmbH, Vienna (AT)
Appl. No. 17/427,022
Filed by Hoerbiger Wien GmbH, Vienna (AT)
PCT Filed Jan. 29, 2020, PCT No. PCT/EP2020/052180
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/157141, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. A 50069/2019 (AT), filed on Jan. 29, 2019.
Prior Publication US 2022/0136494 A1, May 5, 2022
Int. Cl. F16J 15/28 (2006.01); F04B 39/00 (2006.01); F04B 39/04 (2006.01)
CPC F04B 39/041 (2013.01) [F04B 39/0022 (2013.01); F04B 39/0094 (2013.01); F16J 15/28 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A packing ring comprising:
a first axial ring end;
a second axial ring end;
at least three ring segments, each of the at least three ring segments having a first segment end and a second segment end in a circumferential direction,
the first segment end including a first tangential contact surface and a first axial contact surface, the first axial contact surface facing towards the first axial ring end, and
the second segment end including a second tangential contact surface and a second axial contact surface, the second axial contact surface facing towards the second axial ring end, wherein the first tangential contact surface of each ring segment abuts the second tangential contact surface of the ring segment adjoining in the circumferential direction for creating a radial seal of the packing ring and the first axial contact surface of each ring segment abuts and the second axial contact surface of a ring segment adjoining in the circumferential direction for creating an axial seal of the packing ring;
at least three relief openings provided on at least one ring segment, the at least three relief openings extending from a radially inside inner circumferential surface of the ring segment to a radially outside outer circumferential surface and/or to the second axial ring end of the ring segment;
wherein the at least three relief openings each have a first relief opening end opening into the radially inside inner circumferential surface of the ring segment;
wherein the first relief opening ends of two relief openings arranged adjacent to one another in the circumferential direction are spaced apart from one another at a relief opening circumferential distance, characterized in that the first relief opening ends are closer in the axial direction to the first axial ring end than to the second axial ring end and are spaced apart at a relief opening axial distance from the first axial ring end, which is 4% to 20% of the axial ring width of the ring segment.