主权项 |
1. A system, comprising:
a multi-stage turbine, comprising:
an interstage seal extending in an axial direction relative to a rotational axis of the multi-stage turbine between a first turbine stage and a second turbine stage, wherein the interstage seal comprises:
an upper body extending from an upstream seating arm to a downstream seating arm, wherein the upstream and downstream seating arms are configured to constrain movement of the interstage seal along a radial direction relative to the rotational axis of the multi-stage turbine; anda lower body extending from a seating end to a hook end, wherein the seating end is configured to constrain movement of the interstage seal along the radial direction, and the hook end comprises an integral protrusion extending crosswise relative to a base of the lower body, wherein the hook end is configured to constrain movement of the interstage seal along the radial direction and the axial direction, the integral protrusion is axially constrained in an upstream direction and a downstream direction by a groove adjacent a lower support of a second rotor wheel of the second turbine stage, and the lower body comprises a hollow region that is axially and radially enclosed relative to the rotational axis of the multi-stage turbine. |