Packaging ring with relief opening

Abstract

The aim of the invention is to provide a packaging ring (14) which is constructed as simply and compactly as possible, allows a longer service life, and can be flexibly adapted to different use conditions. According to the invention, this is achieved in that at least three relief openings (25) are provided on at least one ring segment (14a), preferably on each ring segment (14a), said relief openings extending from a radially inner internal circumferential surface (18) of the ring segment (14a) to a radially outer external circumferential surface (23) and / or to the second axial ring end (RE2) of the ring segment (14a). Each of the relief openings (25) has a first relief opening end (25a) which opens into the radially inner internal circumferential surface (18) of the ring segment (14a), wherein the first relief opening ends (25a) of two relief openings (25) arranged adjacently to each other in the circumferential direction are arranged in a mutually spaced manner by a relief opening circumferential spacing (z), and the first relief opening ends (25a) lie closer to the first axial ring end (RE1) in the axial direction than to the second axial ring end (RE2) and are arranged in a spaced manner from the first axial ring end (RE1) by a relief opening axial spacing x which equals between 4% and 20% of the axial ring width (RB) of the ring segment (14a).

Description

technical field [0001] The invention relates to a sealing ring having at least three ring segments, each ring segment having a first segment end and a second segment end in the circumferential direction, wherein the first segment of a ring segment The first tangential contact surface of the segment end bears against the second tangential contact surface of the second segment end of a ring segment connected to the ring segment in the circumferential direction, so as to produce a radial sealing, and the first axial contact surface of the first segment end of a ring segment facing the first axial ring end of the sealing ring bears against a ring segment connected to the ring segment in the circumferential direction The second axial contact surface of the second segment end of the second segment facing the second axial ring end of the sealing ring, so as to produce an axial seal of the sealing ring. Furthermore, the present invention relates to a sealing device for sealing a pist...

AI Technical Summary

Problems solved by technology

The disadvantage here, however, is that the principle of pressure compensation can only be increased up to a certain point, since the residual wall thickness remaining in the axial direction of the sealing ring is no longer sufficiently stable due to the pressure compensation groove and due to the presence of may deform under pressure and thus leak

A further disadvantage of highly pressure-compensated sealing rings is that the ring is pressed radially onto the piston rod with only a small residual force

Since the piston rod usually performs some lateral movement in addition to its translational reciprocating movement, the frictional force on the axial abutment surface of the sealing ring may hinder or at least delay the radial movement of the ring, which may cause the ring to move away from the piston. lift on the rod and cause leakage associated with this

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