초록 ▼

An annular turbine blade tip shroud is provided having a construction for minimizing leakage of the cooling fluid and preventing ingestion of hot gases into said cooling flow. A tip shroud support ring is located on the inner surface of said casing with tip shroud members affixed thereto and encasin

An annular turbine blade tip shroud is provided having a construction for minimizing leakage of the cooling fluid and preventing ingestion of hot gases into said cooling flow. A tip shroud support ring is located on the inner surface of said casing with tip shroud members affixed thereto and encasing the blade tips. An annular metal can is located over the forward ends of said tip shroud members and has a sealing engagement with the tip shroud support ring. This annular metal can also seals with feather seals located between adjacent ends of cooperating tip shroud members. A positive metal bellows seal is also provided between downstream vanes and the outer casing. A sheet metal seal is located between each tip shroud member and tip shroud support ring to aid in maintaining proper cooling flow through the shroud.

대표청구항 ▼

In combination with a turbine assembly mounted in an outer casing, a shroud for surrounding a stage of turbine blades between stationary inlet and outlet vanes, said shroud construction comprising a tip shroud support ring extending around the tips of the turbine blades and fixedly positioned on the

In combination with a turbine assembly mounted in an outer casing, a shroud for surrounding a stage of turbine blades between stationary inlet and outlet vanes, said shroud construction comprising a tip shroud support ring extending around the tips of the turbine blades and fixedly positioned on the outer engine casing, a plurality of tip shroud members mounted on the inner circumference of said shroud support ring, passageway means for directing a cooling fluid between said shroud support ring and said tip shroud members, the forward inner end of said shroud support ring having a cylindrical flange extending therefrom, the forward ends of each of the tip shroud members having attaching means slideable over said cylindrical flange, means attaching said rearward ends of said tip shroud members to said tip shroud support ring, an annular metal can positioned over the forward ends of said tip shroud members and enclosing them while the rearward edge of the can engages said tip shroud support ring to form a seal and prevent flow therebetween.