Guide vane segment

US11002140B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Markus Schlemmer · Mainburg, DE
• Andreas Hartung · Munich, DE
• Karl-Hermann Richter · Markt Indersdorf, DE
• Herbert Hanrieder · Hohenkammer, DE

Key dates

• Filing date: Apr 10, 2017
• Grant date: May 11, 2021
• Expiry date: Feb 2, 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 segment for a turbomachine stage that has an inner ring segment (10) and a plurality of guide vanes (20) that are configured on the inner ring segment; a detuning region (V) of the inner ring segment extending in each case from a trailing edge (21) of at least one guide vane (20), in particular of at least 50% of the guide vanes (50), axially toward a leading edge (22) of the guide vane (20) over at most 50% of a width (B) of the inner ring segment (10) and/or at most 5 mm and/or circumferentially on both sides, in each case over at most 25% of a spacing (A) between adjacent guide vanes (20), at and/or in which at least one cavity (112) is configured which contains at least one impulse element (100) with clearance of motion for providing impact contacts.