Gas turbine sealing apparatus
AssigneeSiemens Energy, Inc.
InventorGeorge Liang
Life of this patent
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Abstract
A gas turbine comprises forward and aft rows of rotatable blades coupled to a disc/rotor assembly, a row of stationary vanes positioned between the forward and aft rows of rotatable blades, and rotatable sealing apparatus. Each of the stationary vanes comprises an inner diameter platform having first sealing structure. The rotatable sealing apparatus comprises seal housing apparatus coupled to the disc/rotor assembly and has second sealing structure adapted to engage with the first sealing structure.
Claims20
A vane adapted to be used in a gas turbine engine comprising:
- an airfoil;
- an outer diameter portion coupled to said airfoil and including connecting structure adapted to mate with connecting structure of a turbine casing so as to connect said vane to the turbine casing;
- an inner diameter platform coupled to said airfoil and comprising first sealing structure adapted to engage with rotatable sealing apparatus, said sealing structure defining at least in part a radially innermost surface of said vane.
Sealing apparatus in a gas turbine comprising forward and aft rows of rotatable blades coupled to a disc/rotor assembly and a row of stationary vanes positioned between said forward and aft rows of rotatable blades, said sealing apparatus comprising:
- seal housing apparatus coupled to the disc/rotor assembly;
- first seal retainer plate structure associated with the forward row of rotatable blades and having first axially extending seal structure;
- second seal retainer plate structure associated with the aft row of rotatable blades and having second axially extending seal structure;
- a first seal member associated with said first axially extending seal structure and said seal housing apparatus so as to seal a gap between said first seal retainer plate structure and said seal housing apparatus;
- and
- a second seal member associated with said second axially extending seal structure and said seal housing apparatus so as to seal a gap between said second seal retainer plate structure and said seal housing apparatus.
A gas turbine comprising:
- forward and aft rows of rotatable blades coupled to a disc/rotor assembly;
- a row of stationary vanes positioned between said forward and aft rows of rotatable blades, each of said vanes comprising an inner diameter platform having first sealing structure;
- and
- rotatable sealing apparatus comprising seal housing apparatus coupled to said disc/rotor assembly and having second sealing structure adapted to cooperate with said first said sealing structure.
Dependencies are inferred from the claim text.