Abstract: A stack ring is formed by an outer ring and an inner ring and is inserted in an annular gap formed between an inlet sleeve and an inner casing. The outer periphery of the outer ring and the inner periphery of the inner ring each have a land part having a flat face and taper faces formed on upper and lower sides of the land part. A ratio of L1 to L0 is 0.3 to 0.7 where L1 is a length of the land part and L0 is a total length in the up-down direction. A ratio of S to S0 is not less than 0.95 where S is an area of the cross sectional shape of the outer ring or the inner ring and S0 is an area of a virtual rectangle BCDE and the taper faces have an inclined angle of 1° to 10°.

Abstract: A structure that mounts to a rotation shaft a lever that causes this rotation shaft to rotate, including a plurality of engaging members that are provided in the lever so as to be offset from the center axis of the rotation shaft, and that are capable of advancing toward and retracting from the outer periphery of the rotation shaft, and a plurality of abutted faces that are provided on the outer periphery of the rotation shaft so that the distal end faces of the plurality of engaging members respectively make contact, in which, when at least one of the engaging members and the abutted face that corresponds to that engaging member are in contact, relative rotation of the rotation shaft about the axis thereof in one direction with respect to the lever is restricted, and when another engaging member and another abutted face corresponding to the engaging member are in contact, relative rotation of the rotation shaft about the axis thereof in the other direction with respect to the lever is restricted.

Abstract: A stack ring is formed by an outer ring and an inner ring and is inserted in an annular gap formed between an inlet sleeve and an inner casing. The outer periphery of the outer ring and the inner periphery of the inner ring each have a land part having a flat face and taper faces formed on upper and lower sides of the land part. A ratio of L1 to L0 is 0.3 to 0.7 where L1 is a length of the land part and L0 is a total length in the up-down direction. A ratio of S to S0 is not less than 0.95 where S is an area of the cross sectional shape of the outer ring or the inner ring and S0 is an area of a virtual rectangle BCDE and the taper faces have an inclined angle of 1° to 10°.

Abstract: A structure that mounts to a rotation shaft a lever that causes this rotation shaft to rotate, including a plurality of engaging members that are provided in the lever so as to be offset from the center axis of the rotation shaft, and that are capable of advancing toward and retracting from the outer periphery of the rotation shaft, and a plurality of abutted faces that are provided on the outer periphery of the rotation shaft so that the distal end faces of the plurality of engaging members respectively make contact, in which, when at least one of the engaging members and the abutted face that corresponds to that engaging member are in contact, relative rotation of the rotation shaft about the axis thereof in one direction with respect to the lever is restricted, and when another engaging member and another abutted face corresponding to the engaging member are in contact, relative rotation of the rotation shaft about the axis thereof in the other direction with respect to the lever is restricted.

Abstract: It is the objective of the present invention to enable smooth rotation of the grid plate and normal operation of the bypass valve, regardless of the operational state of the gas turbine.

Abstract: It is the objective of the present invention to enable smooth rotation of the grid plate and normal operation of the bypass valve, regardless of the operational state of the gas turbine.