Dichtungsstruktur in Dampfturbine

Details

Veröffentlichungs-Nr.

EP2692996

Aktenzeichen

EP13178807

Anmeldetag

31. Juli 2013

Veröffentlichung

16. Januar 2019

Erteilung

16. Januar 2019

Rechtsraum

EP

IPC

F01D11/08F01D11/16F01D25/00F01D25/24F01D25/32

Abstract

According to an embodiment, a rotor blade cover section (5) is integrated with the rotor blades (1) at leading ends thereof. A plurality of sealing fins (6) is disposed at the rotor blade cover section (5), the sealing fins (6) forming a predetermined clearance relative to an inner peripheral portion of the nozzle outer ring (3). An annular solid particle trapping space (8) is disposed at the inner peripheral portion of the nozzle outer ring (3), the solid particle trapping space (8) communicating with an inlet (15) of a steam leak (16) and trapping solid particles (20) that flow in with steam. In the sealing structure, the nozzle outer ring (3) has a through hole (12) through which the solid particles (20) are to be discharged from the solid particle trapping space (8) toward a downstream stage of the steam turbine.

Anmelder

Firma

Kabushiki Kaisha Toshiba

Land

🇯🇵 Japan

Fachgebiete