GAS TURBINE

GAS TURBINE

In a gas turbine in which a seal member 6 seals a gap between a transition piece 16 and a nozzle end wall 17 in a turbine first stage, the transition piece 16 and the nozzle end wall 17 has a seal groove 21. The seal member 6 includes a hook portion 7 that slides in the turbine radial direction with...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Miura, Takemitsu, Higuchi, Shinichi, Tagawa, Hisato, Horiuchi, Yasuhiro, Shingai, Kenji
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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Beschreibung
Zusammenfassung:In a gas turbine in which a seal member 6 seals a gap between a transition piece 16 and a nozzle end wall 17 in a turbine first stage, the transition piece 16 and the nozzle end wall 17 has a seal groove 21. The seal member 6 includes a hook portion 7 that slides in the turbine radial direction with respect to the flange 19 and a seal plate portion 8 inserted in the groove 21. The groove 21 and the portion 8 are configured to include a surface contact region 31 in which a surface 21a of the groove 21 and the portion 8 are in surface contact with each other, a noncontact region 32 disposed on a side closer to the transition piece 16 than the region 31, and a hole 23 provided at the portion 8 so as to face the surface 21a in the groove 21 across a gap in the region 32.