Turbine interstage seal system

摘要

A system includes a multi-stage turbine (22). The multi-stage turbine has an interstage seal (42) extending axially between a first turbine stage (34) and a second turbine stage (34). The interstage seal (42) has an upper body (48) that extends from an upstream seating arm (64) to a downstream seating arm (66). The upstream and downstream seating arms (64,66) are designed to constrain movement of the interstage seal (42) along a radial direction (13) of the multi-stage turbine (22). The interstage seal (42) also has a lower body (50) that extends from a seating end (72) to a hook end (74). The seating end (72) is designed to constrain movement of the interstage seal (42) along the radial direction (13). The hook end (74) has a protrusion (118) that extends crosswise relative to a base (116) of the lower body (50). The hook end (74) is designed to constrain movement of the interstage seal (42) along the radial direction (13) and an axial direction (11) of the multi-stage turbine (22).