| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine capable of realizing reduction in engine performance loss and alleviating thermal fatigue of a turbine case, and facilitating disassembly work during a periodic inspection or the like.SOLUTION: A turbine includes: a turbine case 2; turbine blades 3 rotating about an axial center of the turbine case 2; and a shroud 4 constituted by a plurality of shroud split bodies 4A annularly arranged along an inner circumferential surface of the turbine case 2 to surround the turbine blades 3. A projection 4a and an outward groove 4b are formed on each shroud split body 4A, and each shroud split body 4A is fixed to the turbine case 2 by engagement of the projection 4a with a receiving groove 2a of the turbine case 2a in an axial center direction and engagement of the outward groove 4b with an inward projection 2b of the turbine case 2 in a radial direction. A pressure receiving part 4e is formed on each shroud split body 4A for receiving a force for canceling an engagement state in which the outward groove 4b is engaged with the inward projection 2b of the turbine case 2 if the shroud split body 4A is detached from the turbine case 2. |
