Annular anti-wear shim for a turbomachine

摘要

A turbomachine compressor or turbine including annular anti-wear shims mounted against hooks of a stator, each shim being substantially of channel-section defining an annular groove for engaging on a hook, the shim mounted against the downstream hook bearing axially via its middle annular wall on the stator, or on the casing, and one of its side walls includes a bearing device at its end remote from the middle annular wall for bearing against the casing or the stator, respectively, which bearing device is elastically deformable in an axial direction so as to urge the stator upstream.

主权项

1. A turbomachine compressor or turbine comprising:
an annular casing with at least one stator or nozzle fastened therein, the stator or nozzle having upstream and downstream annular hooks at an outer annular platform thereof co-operating with corresponding hooks of the casing or of a shroud carried by the casing, an inner annular platform, and an annular row of stationary vanes extending between the inner and outer platforms; and annular anti-wear shims being mounted against the upstream and downstream hooks of the stator, each shim being substantially of channel section, defining an annular groove for engaging on a hook of the casing or the shroud carried by the casing with annular inner and outer side walls which are substantially parallel and connected together by a middle annular wall, wherein the middle annular wall bears axially on the stator or on the nozzle when the shim is mounted against the downstream hook of the stator, and one of the inner and outer side walls includes bearing means at an end remote from the middle annular wall for bearing against the casing or the stator, respectively, which bearing means are elastically deformable in an axial direction so as to urge the stator upstream.