Stufenfalzdichtungsanordnung

Details

Veröffentlichungs-Nr.

EP3498980

Aktenzeichen

EP17207850

Anmeldetag

15. Dezember 2017

Veröffentlichung

17. Februar 2021

Erteilung

17. Februar 2021

Rechtsraum

EP

IPC

F01D11/00

Abstract

A shiplap arrangement for a gas turbine having an axis A; the shiplap arrangement comprising:- a first and a second blade adjacent arranged along a circumferential direction (15) centered in the gas turbine axis A; each blade along a radial direction (14) comprising a foot configured for coupling the blade to a rotor, a shank portion provided with a downstream closing wall, a platform (19) and an airfoil (20); between the adjacent blades in the shank portion a cooling air cavity is provided that is outwardly sealed by an axial seal (22) arranged along the gap between the adjacent platforms and downstream sealed by a shiplap coupling (24) between the adjacent shank closing walls (18) ; the shiplap coupling comprising a circumferential projecting portion of the shank closing wall of the first blade and a corresponding receiving recess portion in the adjacent shank closing wall;- a radial seal (30) arranged along the gap between the projecting portion and the recess portion of the shiplap coupling (24) and housed at one side in a first radial groove realized in the projecting portion and at the other side in a second radial groove realized in the recess portion to provide a barrier against leakage flow passing through the shiplap coupling (24).

Anmelder

Firma

Ansaldo Energia Switzerland AG

Land

🇨🇭 Schweiz

Fachgebiete