GAS TURBINE

摘要

The aircraft-engine gas turbine includes an outer sealing ring for sealing an array of rotor blades that can be attached to a housing by a clamping means (80) in a friction fit, and a plurality of ring segments (20i, 20i+1), wherein a free axial path length (af) of a sealing ring segment counter to the direction of through-flow is at least as large as an axial engagement (a1) of a rotation locking member (10) of the outer sealing ring (af≧a1), which is free of form fit counter to the direction of through-flow, and/or an axial overhang (a2) of a radial mounting rail (23) of the outer sealing ring (af≧a2), and/or an axial offset (a3, a4) of a sealing fin (31, 41); and/or a quotient of a specific clearance sum of the outer sealing ring attached to the housing in a friction fit.

主权项

1. An aircraft-engine gas turbine, having a housing (16) that has a flow channel inlet, a first array of rotor blades (18) in the direction of through-flow and that can be arranged in the housing, and an outer sealing ring for sealing this array of rotor blades that can be attached to the housing by a clamp (80) in a friction fit, and a plurality of ring segments (20i, 20i+1); wherein
a free axial path length (af) of a sealing ring segment counter to the direction of through-flow is at least as large as an axial engagement (a1) of a rotation locking member (10) of the outer sealing ring (af≧a1), which is free of form fit counter to the direction of through-flow, and/or an axial overhang (a2) of a radial mounting rail (23) of the outer sealing ring (af≧a2), and/or an axial offset (a3, a4) of a sealing fin (31, 41) of the outer sealing ring counter to the direction of through-flow with respect to a downstream edge (32, 42) of a sealing face of the sealing ring segment for sealing of this sealing fin (af≧a3, a4); and/or that a quotient of a clearance sum(∑i=1nui)  of the outer sealing ring attached to the housing in a friction fit and pi (π) is at least as large as a difference between a maximum outer diameter (D20) of the outer sealing ring, attached to the housing in a friction fit, and a minimum inner diameter (d16) of the flow channel inlet of the housing(∑i=1nui≥(D20-d16)·π).