ASSEMBLY COMPRISED OF A VANE AND OF A COOLING LINER, TURBOMACHINE NOZZLE GUIDE VANES ASSEMBLY COMPRISING THIS ASSEMBLY, TURBOMACHINE AND METHOD OF FITTING AND OF REPAIRING THIS ASSEMBLY

Abstract

The assembly of the invention is comprised of a vane (2) and of a cooling liner (6) for cooling the vane (2), the vane (2) comprising a central cavity (5) with at least one first opening (7) into which the liner (6) extends, the liner (6) comprising a flange (13) fixed to the rim (14) of the opening (7). This assembly is one which comprises, near the flange (13), a peripheral insert (16) inserted between the wall of the liner (6) and the wall (7′) of the opening (7).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be better understood with the aid of the following description of the preferred embodiments of the invention, with reference to the attached plates in which:

FIG. 1 depicts a schematic perspective view of a portion of the nozzle guide vanes assembly of the invention;

FIG. 2 depicts a schematic sectioned view of the assembly of the invention;

FIG. 3 depicts a schematic sectioned view of the insert according to a first embodiment of the assembly of the invention;

FIG. 4 depicts a schematic sectioned view of the insert according to a second embodiment of the assembly of the invention, and

FIG. 5 depicts a schematic sectioned view of the insert according to a third embodiment of the assembly of the invention.

Claims

1. An assembly comprised of a vane and of a cooling liner for cooling the vane, the vane comprising a central cavity with at least one first opening into which the liner extends, the liner comprising a flange fixed to the rim of the opening, which assembly comprises, near the flange, a peripheral insert inserted between the wall of the liner and the wall of the opening.

2. The assembly as claimed in claim 1, in which the insert creates a pressure drop, acting as a baffle and/or as a seal.

3. The assembly as claimed in one of claims 1 and 2, in which, with the central cavity forming a second opening, the liner comprises an end portion at the opposite end to the flange, which portion is guided in the second opening, the wall of which forms a guideway for that purpose.

4. The assembly as claimed in claim 3, in which there is a clearance between the liner and the wall of the first opening.

5. The assembly as claimed in one of claims 1 to 4, in which the insert comprises a peripheral strip forming a baffle.

6. The assembly as claimed in one of claims 1 to 4, in which the insert comprises an elastic leaf.

7. The assembly as claimed in one of claims 1 to 4, in which the insert comprises a peripheral spring.

8. The assembly as claimed in one of claims 1 to 7, in which the flange is fixed to the rim by spot welding.

9. A turbomachine nozzle guide vanes assembly comprising a plurality of assemblies comprised of a vane and of a liner as claimed in one of claims 1 to 8.

10. A turbomachine comprising a nozzle guide vanes assembly as claimed in claim 9.

11. A method of fitting a cooling liner in a turbomachine nozzle guide vanes assembly hollow vane to form the assembly as claimed in one of claims 1 to 8, the vane comprising a central cavity with at least one first opening and the liner comprising a flange, in which method: the liner is inserted in the cavity of the vane, via the first opening, so as to place a peripheral insert between the wall of the liner and the wall of the first opening, andthe flange is spot welded to the rim.

12. A method for repairing an assembly as claimed in one of claims 1 to 8, in which: the flange of the liner is ground down as far as the rim without grinding away the insert,the liner is removed from the central body of the vane, via the first opening,a new flange is attached to the liner,the liner, with the new flange, is inserted in the cavity of the vane, via the first opening, so as to position the peripheral insert between the wall of the liner and the wall of the first opening, andthe flange is fixed to the rim.