Arrangement to control the clearance of a sliding bearing

US9022659B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Bo Pedersen · Lund, SE
• Kim Thomsen · Ikast, DK

Key dates

• Filing date: Apr 10, 2014
• Grant date: May 5, 2015
• Expiry date: Apr 10, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S384/90
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An arrangement to control the clearance of a sliding bearing is disclosed. A sliding bearing arrangement, of a direct driven wind turbine, comprises a bearing. The bearing comprises a first bearing shell and a second bearing shell, whereby the first bearing shell and the second bearing shell are arranged rotatable in respect to each other. A certain predetermined clearance is present between the first bearing shell and the second bearing shell, while the bearing is in rotation. A first circuit comprises a first fluid, while the first circuit is in thermal contact with the first bearing shell. A second circuit comprises a second fluid, while the second circuit is in thermal contact with the second bearing shell. The first circuit and the second circuit are coupled in a way that a difference in the temperature between the first bearing shell and the second bearing shell is compensated via the first and the second fluid, thus the clearance is kept within a predetermined range.