Turbomachine

US7189003B2 · kind B2 · utility

Assignee

• Atlas Copco Energas GmbH

Inventors

• Alfred Sopper · Kerpen, DE
• Martin Leonhard · Bogen, DE

Key dates

• Filing date: May 4, 2005
• Grant date: Mar 13, 2007
• Expiry date: Sep 8, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/44
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A turbomachine has a rotor shaft, which is mounted in a bearing arrangement containing a hydrodynamic axial bearing, and a rotor disposed on the rotor shaft. A hydrostatic axial bearing is additionally provided in the immediate vicinity of the hydrodynamic axial bearing, the hydrostatic axial bearing absorbing the axial force acting on the rotor shaft at rest, completely or at least for the most part, relieving stress on the hydrodynamic axial bearing during start-up processes of the rotor shaft, and being shut off during operation at the rated speed of rotation.