Guide vane ring for a turbomachine

US10677076B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Hannes Wolf · Dußlingen, DE
• Alexander Halcoussis · Haimhausen, DE

Key dates

• Filing date: Apr 26, 2017
• Grant date: Jun 9, 2020
• Expiry date: Jan 15, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A guide vane ring for a turbomachine minimizes a leakage flow that passes through a recess into which a guide vane disk is inserted. It has a guide vane row having a plurality of guide vanes, each having a vane airfoil and a vane disk, as well as an inner ring having an inner ring surface facing the plurality of guide vanes. Viewed in the direction of a designated primary flow streaming through the turbomachine, the vane disks have a front and a rear surface region. In a nominal and/or a maximum open position of the guide vanes, the front and/or the rear surface region of at least one of the vane disks has an offset from the inner ring surface that is radially disposed (relative to a central axis of the inner ring).