Distributor for an exhaust gas turbine with an axial flow

US6824355B2 · kind B2 · utility

Assignee

• ABB Turbo Systems AG · CH

Inventors

• Detlef Behrendt · Uerdingen, DE
• Martin Seiler · Ehrenkirchen, DE
• Jozef Baets · Baden, CH

Key dates

• Filing date: Sep 16, 2002
• Grant date: Nov 30, 2004
• Expiry date: Nov 27, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/33
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The guide-vane system serves to change the position of the guide vanes of an axial-flow exhaust-gas turbine of a turbocharger. The guide vanes are arranged axially symmetrically to the turbine axis in a flow passage carrying exhaust gas and can be pivoted by a pivoting device in each case about a radially directed axis. A vane shank led radially outward from the flow passage through a casing wall is attached to each of the guide vanes. With its part directed outward, the vane shank is mounted so as to be rotatable about the pivot axis. The pivoting device contains an adjusting ring, arranged outside the flow passage and rotatable about the turbine axis, and also an adjusting lever which transmits a torque from the adjusting ring to the vane shank of each guide vane. The adjusting ring is mounted with its outside on rolling elements which are each designed as one-armed levers and are mounted so as to be pivotable on a component of a casing wall, this component being designed as a supporting ring. This guide-vane system is characterized by high reliability even under heavy operating conditions.