Device and method for repairing a damaged zone of an intermediate layer of a multilayer structure by way of deformable corrugated rings

摘要

A device for repairing a damaged zone in a first cavity, with a first diameter, of an intermediate layer interposed between two layers that have a second cavity with a second diameter smaller than the first diameter. The device includes a stop that forms an abutment at the interface between the first cavity and one of the second cavities, a ring having a deformable corrugated shape, an initial inside diameter, an initial outside diameter smaller than the second diameter, and being positioned in the first cavity, a deformation element having an elastically variable outside diameter initially smaller than the initial inside diameter of the ring, and a tool being able to increase the outside diameter of the deformation element so that it deforms the ring in the first cavity in order to reduce the difference between the first and second diameters.

主权项

1. A device for repairing a damaged and removed zone at the periphery of a first cavity that has a first diameter and is defined in an intermediate layer interposed between at least two layers that have a second cavity with a second diameter smaller than said first diameter, said second cavity being coaxial with said first cavity, said device comprising:
a stop means having a surface defining an abutment for an interface between said first cavity and said second cavity in one of said layers, at least one ring having a deformable corrugated shape, an initial inside diameter, and an initial outside diameter smaller than said second diameter, and wherein said at least one ring is configured and arranged to be positioned in said first cavity, a deformation means having a central cavity and an elastically variable outside diameter initially smaller than said initial inside diameter of said ring, and a tool designed to be introduced into said central cavity and to increase the outside diameter of said deformation means in order to deform said ring in said first cavity by increasing its initial outside diameter so as to reduce the difference between said first and second diameters, wherein said stop means comprises:
a head wider than said second diameter and intended to be pressed against an outer face of one of said layers,a body having a circular cylindrical shape, a diameter slightly smaller than said second diameter and a height approximately equal to a thickness of said layer in the region of its second cavity, anda stop means cavity extending through both said head and said body of said stop means, wherein said stop means cavity is configured and arranged to slidably receive a portion of said tool therein.