초록 ▼

A leaf seal assembly is secured to the trailing edge of a shroud segment for sealing between the shroud segment and the leading edge side wall of a nozzle outer band. The leaf seal includes a circumferentially elongated seal plate biased by a pair of spring clips disposed in a groove along the trail

A leaf seal assembly is secured to the trailing edge of a shroud segment for sealing between the shroud segment and the leading edge side wall of a nozzle outer band. The leaf seal includes a circumferentially elongated seal plate biased by a pair of spring clips disposed in a groove along the trailing edge of the shroud segment to maintain the seal plate in engagement with the flange on the leading edge side wall of the nozzle outer band. The leaf seal plate and spring clips receive pins tack-welded to the shroud segment to secure the leaf seal assembly in place.

대표청구항 ▼

1. A seal for sealing between a stator shroud and a nozzle of a multi-stage gas turbine to substantially preclude leakage between a pressurized cavity on one side of the seal and hot gases in a hot gas path of the gas turbine on the other side of the seal, comprising:a shroud segment having a surfac

1. A seal for sealing between a stator shroud and a nozzle of a multi-stage gas turbine to substantially preclude leakage between a pressurized cavity on one side of the seal and hot gases in a hot gas path of the gas turbine on the other side of the seal, comprising:a shroud segment having a surface for, in part, defining the hot gas path through one stage and overlying tips of buckets of said one stage forming part of a turbine rotor; said shroud segment having a leading edge and a trailing edge; an outer band for, in part, defining the hot gas path through an adjacent stage following said one stage and forming part of the nozzle of said adjacent stage; a leaf seal between the trailing edge of said shroud segment and a leading edge side wall of said nozzle outer band; said shroud segment having a seat for receiving said leaf seal; and a spring carried by said shroud segment and engaging said shroud segment and said leaf seal for biasing a portion of said leaf seal into sealing engagement with said leading edge side wall of said nozzle outer band.