Bürstendichtung mit Querstrom-Trägerplatte und Verfahren zur Verminderung des Thermischen Gradienten

Details

Veröffentlichungs-Nr.

EP4779128

Anmeldetag

15. Januar 2026

Veröffentlichung

22. Juli 2026

Rechtsraum

EP

IPC

F01D11/00, F16J15/3288

Abstract

A brush seal (200) of a turbine engine may provide a cooling flow to a ceramic matrix composite (CMC) component (210) that has a hot side (212) exposed to a hot gas path and an opposing cold side (214). The brush seal includes an inner diameter (ID) backing plate (220) providing a radial face seal across a cavity in the CMC component. The brush seal also includes an outer diameter (OD) backing plate (230), a plurality of brush seal bristles (240) disposed between the ID and OD backing plates, and a hole (250) extending through the brush seal to provide the cooling flow to the cavity of the CMC component. A cross-flow channel (224) is disposed on an inner surface of the ID backing plate such that the cross-flow channel extends from an edge of the ID backing plate to the hole to pass leakage air to mix with the cooling flow and reduce an impingement cooling effect thereof.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA

Fachgebiete