Air exhaust tube holder in a turbomachine
View Patent ↗A support for carrying a tube for discharging oil-laden air from a turbine engine, the support including a radially inner annular portion for mounting around the tube, and fins extending outwards in a radial plane from the annular portion, each fin forming an angle relative to the radial direction. The fins have fastener zones at their outer peripheries, the fastener zones being inclined in the axial direction of the support so as to be suitable for fastening to an exhaust cone of the turbine engine.
1. A support for carrying a tube for discharging oil-laden air from a turbine engine, the support comprising:
a radially inner annular portion for mounting around said tube; and
fins extending outwards in a radial plane from the annular portion, a length of each fin being coplanar with one another, each fin forming an angle relative to a radial direction, outer peripheries of the fins having outer fastener zones, said outer fastener zones being inclined in an axial direction of the support so as to be suitable for fastening to an exhaust cone of the turbine engine,
wherein each of the outer fastener zones is configured to extend towards a tapered end of the exhaust cone, and
wherein each fin includes a middle zone with a first end connected to an inner fastener zone for fastening to the inner annular portion of the support, and a second end connected to the outer fastener zone for fastening to the exhaust cone, the middle zone being planar and extending from the inner annular portion of the support in a plane forming an angle that is not a right angle with a tangent to the annular portion passing through the first end.
2. The support according to claim 1 , wherein each of the outer fastener zones presents a shape of a portion of a cone.
3. The support according to claim 1 , wherein each middle zone extends in a plane parallel to an axis of the inner annular portion.
4. The support according to claim 1 , wherein each inner fastener zone is of a shape complementary to the shape of the inner annular portion.
5. The support according to claim 1 , wherein the fins and the inner annular portion are made of a nickel-based superalloy.
6. The support according to claim 1 , wherein a length of the inner annular portion is less than or equal to 0.4 times an inside diameter of the inner annular portion.
7. The support according to claim 1 , comprising three to ten fins.
8. An assembly for a turbine engine comprising:
a support according to claim 1 ; and
a tube for discharging oil-laden air from a turbine engine, said tube comprising an upstream portion that is movable in rotation and a downstream portion that does not rotate, said downstream portion passing through an exhaust cone and extending along an axis of said exhaust cone, said downstream portion being surrounded by the inner annular portion of the support so that said downstream portion is mounted to be free to move axially in translation and in rotation in said inner annular portion, the outer fastener zones of the support also being fastened to the exhaust cone.
9. A turbine engine comprising an assembly according to claim 8 .