公开(公告)号：US20170096905A1

公开(公告)日：2017-04-06

申请号：US15379543

申请日：2016-12-15

Applicant: DRESSER-RAND SA

Inventor： Olivier Lebigre

IPC: F01D11/04 ,  F16J15/44

CPC classification number: F01D11/04 ,  F05D2240/55 ,  F16J15/3412 ,  F16J15/44

Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.

公开(公告)号：US10605105B2

公开(公告)日：2020-03-31

申请号：US15379543

申请日：2016-12-15

Applicant: DRESSER-RAND SA

Inventor： Olivier Lebigre

IPC: F01D11/04 ,  F16J15/34 ,  F16J15/44

Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.