公开(公告)号：US5230169A

公开(公告)日：1993-07-27

申请号：US832355

申请日：1992-02-07

申请人： Erkki Jaatinen ,  Kalervo Jussila ,  Esa Moilanen ,  Olavi Viitanen

发明人： Erkki Jaatinen ,  Kalervo Jussila ,  Esa Moilanen ,  Olavi Viitanen

IPC分类号： D21F5/02 ,  D21F5/08 ,  D21F5/10

CPC分类号： D21F5/021 ,  D21F5/08 ,  D21F5/10

摘要： The invention concerns a steam and condensate coupling for a drying cylinder in a paper machine. The steam and condensate coupling includes a piston ring having a seal therein. This stationary, nonrevolving seal is pressed by means of steam pressure against the revolving axle or against a flange part or equivalent permanently connected to said axle. A piston ring is located in the coupling, which includes a face placed substantially perpendicularly to an axial direction of the cylinder, or slightly inclined from the perpendicular plane. In the coupling construction, steam pressure is passed onto the face of the piston ring, and a force is produced. By this force, the piston ring and the seal are pressed toward the revolving axle. Thereby, by means of the steam pressure, a pressure-tight joint is provided between the seal and the revolving axle.