Patent ID: 11927112
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. A rotary machine, comprising:
a casing;
a rotary body for rotating around an axis in the casing;
a plurality of rotor blade bodies mounted so as to extend from the rotor body in a radial direction;
a shroud connected to a tip end portion of each of the plurality of rotor blade bodies; and
a sealing device including not less than three arc-shaped fins spaced from each other in an axial direction in a cavity formed between an inner peripheral surface of the casing and the shroud, each of the arc-shaped fins extending along a circumferential direction,
wherein the arc-shaped fins include:
a first fin which is one of two outermost fins located on an outermost side in the axial direction;
a second fin disposed adjacent to the first fin in the axial direction; and
at least one third fin disposed opposite to the first fin across the second fin in the axial direction, and

wherein the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the second fin with respect to the radial direction.