Dichtungsstreifen zum Abdichten des Anschlusses einer Umfangsnut eines Rotors und eines Umfangsfusses einer Schaufel, Turbomaschine und Verfahren zum Abdichten eines Anschlusses eines Rotors und mindestens einer Schaufel

Details

Veröffentlichungs-Nr.

EP4800219

Anmeldetag

26. Februar 2025

Veröffentlichung

2. September 2026

Rechtsraum

EP

Abstract

The invention belongs to the field of turbomachines and relates to a sealing strip (1) for sealing the junction of a circumferential groove (2.1) of a rotor (2) and a circumferential root (3.1) of a blade (3). The sealing strip comprises a main portion (1.1) having an outer surface (10) and an inner surface (11), two sealing sides (1.2, 1.3), wherein the main portion is arranged between the sealing sides, and a plurality of cooling holes (1.4) arranged along the main portion, each cooling hole extending from the outer surface to the inner surface. The invention also relates to a turbomachine (20) comprising the roto, which includes a cooling fluid feed passage (2.2) configured to feed a cooling fluid to the circumferential groove , a plurality of blades, each blade comprising the circumferential root, wherein the circumferential roots of the blades are arranged in the circumferential groove of the rotor. The blades have at least one cooling passage (3.2) which extends from an inlet (3.2.1) arranged at the circumferential root to an outlet. The turbomachine further comprises the sealing strip arranged in a junction of the rotor and the blades, wherein at least part of the main portion of the sealing strip contacts the circumferential root of the blades and at least part of the sealing sides of the sealing strip contacts a bottom surface (2.1.1) of the circumferential groove of the rotor, wherein there is a cavity formed between said bottom surface of the circumferential groove and the inner surface of the main portion. Said cavity fluidically connects the cooling holes of the sealing strip and the cooling fluid feed passage of the rotor, wherein the inlet of at least one cooling passage of each blade is at least partially aligned with a cooling hole (1.4), thus fluidically connecting the cavity and the at least one cooling passage. The invention also relates to a method of sealing a junction of the rotor (2) and at least one blade.

Anmelder

Firma

ITP Engines UK Ltd

Land

🇬🇧 Großbritannien