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US 2011/0236203 A1Published application
Ring segment positioning member
AssigneeTurbomeca
InventorsJean-Baptiste Arilla, Denis Chanteloup, Yvan Lameignere
Life of this patent
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Abstract
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.
Claims15
1-14. (canceled)
15:
- 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;
- at least one positioning member presenting:
- a fastener portion fastened to the casing;
- a resilient portion forming a spring;
- and
- a bearing portion connected to the resilient portion and bearing axially against the ring segment, the positioning member being fastened to the casing while exerting axial thrust on at least one of the ring segments so as to press it axially against a portion of the casing.
6 more elements
16:
- The turbomachine according to claim 15, wherein the positioning member includes at least a first arm carrying the fastener portion.
17:
- The turbomachine according to claim 16, wherein the fastener portion is in a form of a tab extending orthogonally relative to a plane in which the first arm extends.
18:
- The turbomachine according to claim 16, wherein the fastener portion comprises a hole, the axis of which extends orthogonally relative to a plane in which the first arm extends.
19:
- The turbomachine according to claim 16, wherein the resilient portion comprises a corrugated tongue.
20:
- The turbomachine according to claim 16, 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.
21:
- The turbomachine according to claim 20, 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.
22:
- The turbomachine according to claim 20, wherein the positioning member further includes a third arm similar to the second arm extending from the plate, the first arm extending between the second and third arms.
23:
- The turbomachine according to claim 20, wherein the first arm further includes a second resilient portion disposed between the plate and the fastener portion.
24:
- The turbomachine according to claim 20, wherein the first arm forms a plate for covering a junction between two contiguous ring segments.
25:
- The turbomachine according to claim 16, wherein the resilient portion includes a pair of arms in a V-shape extending from a plate.
26:
- The turbomachine according to claim 25, wherein the bearing portion is constituted by ends of the arms.
27:
- The turbomachine according to claim 16, wherein the positioning member includes a portion fastened to the casing, a resilient second arm exerting axial thrust on the first ring segment, and a resilient third arm exerting axial thrust on the second ring segment, thereby pressing the ring segment axially against a portion of the casing.
28:
- The turbomachine according to claim 16, further comprising at least one plate covering a junction between the first and second ring segments, the plate being held radially against the ring segments by the positioning member.