Axial seal system for a gas turbine steam-cooled rotor
AssigneeGeneral Electric Company
InventorThomas Charles Mashey
Life of this patent
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Abstract
An axial seal assembly is provided at the interface between adjacent wheels and spacers of a gas turbine rotor and disposed about tubes passing through openings in the rotor adjacent the rotor rim and carrying a thermal medium. Each seal assembly includes a support bushing for supporting a land of the thermal medium carrying tube, an axially registering seat bushing disposed in the opposed opening and a frustoconical seal between the seal bushing and seat. The seal bushing includes a radial flange having an annular recess for retaining the outer diameter edge of the seal, while the seat bushing has an axially facing annular surface forming a seat for engagement by the inner diameter edge of the seal.
Claims7
In a gas turbine having a rotor comprised of axially stacked rotor wheels and spacers and aligned openings spaced from an axis of rotation of the rotor, the aligned wheels and spacers receiving a tube extending in an axial direction, a seal assembly about said tube at an interface of one of said wheels and one of said spacers, comprising:
- a generally annular seal support in part received in a first opening in one of said wheels and spacers and including a generally radially extending flange having an annular recess in axial registration with an opposed face of another of said wheel and spacers;
- a seat bushing in part received in a second opening of said another wheel and spacer in axial opposition to said first opening and having a seat;
- and
- a seal between said seal support and said bushing, said seal including an annular frustoconically-shaped element having a radially outer edge portion engaging said seal support in said recess thereof and a radially inner edge portion engaging said seat for sealing between said seal support and said seat.
Dependencies are inferred from the claim text.