Combination transition piece floating cloth seal and stage 1 turbine nozzle flexible sealing element
AssigneeGeneral Electric Company
InventorRobert Harold Cromer
Life of this patent
Estimating the term…
Abstract
A transition piece seal assembly includes a transition piece seal support having a first flange for supporting a transition piece seal, and a second flange adapted for mounting in an adjacent nozzle; and at least one spring seal element having a mounting flange adapted to engage the second flange of the transition piece seal support, and a flex portion having a free edge adapted to engage a forward face of the nozzle.
Claims19
A transition piece seal assembly adapted for sealing an interlace between a transition piece extending between a turbine combustor and a first stage turbine nozzle comprising:
- a transition piece seal support having a first vertical flange for supporting a combustor transition piece seal adapted to be received in a peripheral slot in the transition piece, and a second horizontal flange adapted for mounting in an adjacent nozzle;
- at least one spring seal element having a horizontal mounting flange adapted to overlie said second horizontal flange of said transition piece seal support for mounting in said nozzle, and a flex portion bent back over said horizontal mounting flange and having a free edge adapted to engage a forward face of said nozzle.
A transition piece seal assembly comprising:
- a transition piece seal support having a first flange for supporting a transition piece seal, and a second flange adapted for mounting in an adjacent nozzle;
- at least one spring seal element having a mounting flange adapted to engage said second flange of said transition piece seal support, and a flex portion having a free edge adapted to engage a forward face of said nozzle;
- wherein said at least one spring seal element is formed with a plurality of slots extending from the free edge of said flex portion to said mounting flange.
A transition piece seal assembly comprising:
- a transition piece seal support having a first flange for supporting a transition piece seal, and a second flange adapted for mounting in an adjacent nozzle;
- at least one spring seal element having a mounting flange adapted to engage said second flange of said transition piece seal support, and a flex portion having a free edge adapted to engage a forward face of said nozzle;
- wherein said transition piece seal includes a mesh cloth wrapped about one or more shims.
A gas turbine comprising an annular array of combustors, each having a transition piece extending between the combustor and a first stage turbine nozzle, and wherein a transition piece seal assembly is interposed at the interface of each transition piece and the first stage turbine nozzle, each transition piece seal assembly comprising:
- a transition piece seal support having a first flange for supporting a transition piece seal, and a second flange secured in the first stage turbine nozzle;
- and
- at least one spring seal element having a mounting flange seated on said second flange of said transition piece seal support, and a flex portion having a free edge compressively engaged with a forward face of said nozzle.
A method of reducing leakage at an interface of a transition piece and a first stage turbine nozzle, wherein the transition piece extends between a combustor and the first stage turbine nozzle, the method comprising:
- a) providing a transition piece seal assembly between the transition piece and the first stage turbine nozzle wherein the transition piece seal assembly is supported on a forward face of the first stage turbine nozzle and includes a seal support supporting sealing media engaged in a peripheral slot or channel on the transition piece;
- and
- b) providing at least one additional seal element supported at one end in said forward face of said first stage turbine nozzle and having a free edge remote from said one end engaged with said forward face of said first stage nozzle, wherein said additional seal element comprises a mounting flange for supporting said additional seal element in said forward face of said first stage turbine nozzle, and a flex portion adapted to be compressed against said forward face.
Dependencies are inferred from the claim text.