Ring segment positioning member

摘要

A positioning member for presenting a ring segment for a turbine wheel mounted to rotate about an axis inside a casing. The member presents: a fastener portion for fastening to the casing; a resilient portion forming a spring; and a bearing portion connected to the resilient portion and serving to bear axially against the ring segment such that when the member is mounted the ring segment is pressed axially against a portion of the casing by the positioning member.

主权项

1. A turbomachine comprising:
a casing; a turbine wheel rotatably mounted about an axis within the casing; a ring mounted concentrically around the turbine wheel, the ring including at least first and second ring segments; and at least one positioning member presenting:
a fastener portion fastened to the casing;a resilient portion forming a spring; anda bearing portion connected to the resilient portion and bearing axially against at least one of the first and second ring segments, the positioning member being fastened to the casing while exerting axial thrust on the at least one of the first and second ring segments so as to press the at least one of the first and second ring segments axially against a portion of the casing, wherein a downstream end of the at least one of the first and second ring segments includes upper and lower axial extending portions extending downstream and a contact portion extending radially therebetween so as to present a downstream facing groove, a downstream portion of the casing presents an upstream facing groove which holds the upper axial extending portion of the downstream end of the at least one of the first and second ring segments, and the contact portion abuts the downstream portion of the casing, wherein the positioning member comprises at least a first arm carrying the fastener portion, together with at least a second arm including the resilient portion, and wherein the first and second arms are parallel and extend from a plate, and wherein the fastener portion is situated at one end of the first arm remote from the plate, while the bearing portion is situated at one end of the second arm that is remote from the plate.