Patent ID: 7625175

Claim:
A link device between an enclosure for passing cooling air and a stator nozzle in a turbomachine, the device comprising metal tubes having their ends mounted in leaktight manner in orifices in a casing of the enclosure and in orifices in the stator nozzle, wherein a middle portion of each tube is formed by a metal bellows whose ends are secured to rings engaged in leaktight manner in the orifices of the casing and of the nozzle, respectively, wherein the bellows is resiliently prestressed so as to urge the rings against surfaces of the orifices of the casing and of the nozzle, respectively, wherein the ring that is engaged in the orifice of the nozzle has a frustoconical outside surface which is in axial abutment against a complementary frustoconical surface of the orifice of the nozzle.