US 11,852,242 B2
Packing ring, sealing device, compressor, rotational system and method for detecting the condition of wear
Marc Langela, Güsten (DE); Dennis Kranert, Aschersleben (DE); and Uwe Morawa, Langenweddingen (DE)
Assigned to STASSKOL GMBH, Stassfurt (DE)
Appl. No. 16/482,406
Filed by STASSKOL GMBH, Stassfurt (DE)
PCT Filed Jan. 26, 2018, PCT No. PCT/EP2018/051948
§ 371(c)(1), (2) Date Jul. 31, 2019,
PCT Pub. No. WO2018/145922, PCT Pub. Date Aug. 16, 2018.
Claims priority of application No. 10 2017 202 148.9 (DE), filed on Feb. 10, 2017.
Prior Publication US 2019/0360596 A1, Nov. 28, 2019
Int. Cl. F16J 15/24 (2006.01); F16J 15/3296 (2016.01); F16J 15/26 (2006.01)
CPC F16J 15/3296 (2013.01) [F16J 15/24 (2013.01); F16J 15/26 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A packing ring for a sealing device for a rotating or oscillating body, comprising:
at least two segments that are arranged around a common main axis (X),
wherein each segment at least has an outer circumferential surface, an inner circumferential surface, and two axial end surfaces,
wherein the outer circumferential surface and the inner circumferential surface each extend essentially around the main axis (X),
wherein the axial end surfaces each extend essentially perpendicular to the main axis (X),
wherein the at least two segments are spaced apart from each other in a circumferential direction such that an outer circumferential surface of each segment moves toward the main axis (X) when wear occurs at an inner circumferential surface of the segments,
wherein the outer circumferential surface has the form of a part of an envelope surface of a cylinder,
wherein the packing ring has at least one indicator means that indicates a position of the outer circumferential surface of at least one of the segments or a portion thereof in a radial direction (R) perpendicular to the main axis (X) of the packing ring, with the indicator means having a longitudinal axis extending in the radial direction (R),
wherein the indicator means comprises at least one indicator pin, which is arranged on one of the at least two segments such that the indicator pin moves towards the main axis (X) along with the segment when the wear occurs,
wherein the at least one indicator pin is arranged such that it extends away from the outer circumferential surface of the segment in the radial direction (R),
wherein the packing ring comprises a tube spring, which is arranged in a common groove of the segments such that the tube spring applies a force to the segments in the radial direction (R), and
wherein the at least one indicator pin is partly arranged in the groove so that it is held by the tube spring.