| 摘要 |
A piston ring for a reciprocating compressor is disclosed, including a one-part annular sealing ring with an arcuate outer surface and having a gap between butt ends of the sealing ring. A joint seal seals the gap symmetrical, having two limbs that extend at both sides in the peripheral direction over an angular range of 20° to 180° and having a radially outwardly directed, arcuate limb outer face. The joint seal includes a contact part that extends at both sides in the peripheral direction and projects beyond the limbs in the axial direction. The sealing ring and the joint seal are adapted to each other such that, when assembled, the joint seal rests laterally against the sealing ring via a stop and runs along the gap and covers same in the peripheral direction. |
| 主权项 |
1. A piston ring for a reciprocating compressor, comprising a one-piece sealing ring, extending in a circumferential direction around a middle point with an axial direction, with an outer face extending in an arcuate manner, wherein the sealing ring has a straight cut joint with joint ends and also a gap extending in the circumferential direction between the joint ends, and also comprising a joint lock for sealing the gap, wherein the joint lock is designed symmetrically with regard to a symmetry plane, wherein the joint lock, starting from the symmetry plane, has two leg sections extending on both sides in the circumferential direction, wherein the two joint-lock leg sections altogether extend over an angular range of between 20° and a maximum of 180°, and wherein the joint-lock leg sections have a radially outwardly oriented outer side extending in an arcuate manner, and wherein the joint lock, starting from the symmetry plane, has a contact section extending on both sides in the circumferential direction and projecting in the axial direction over the joint-lock leg sections, wherein the contact section extends in the circumferential direction only over a partial angle of the two joint-lock leg sections, and wherein the contact section has a radially outwardly oriented contact face, and wherein the contact face extends in a set back manner in the radial direction with regard to the leg-section outer side so that the joint-lock leg sections along the contact face form a stop which is oriented in the axial direction, wherein the sealing ring and the joint lock are of a mutually matched design in such a way that in the assembled state the joint lock butts laterally against the sealing ring via the stop, and in such a way that the contact face of the contact section extends along the gap and covers this in the circumferential direction. |
