ASSEMBLY FROM A TURBINE DISC TO A GAS TURBINE ENGINE AND A BEARING CHAIN OF A BEARING BEARING, A COOLING COOLING CIRCUIT OF A TURBINE DISC OF SUCH NODE

摘要

1. An assembly of a turbine disk of a gas turbine engine and a support journal of a support bearing, while the turbine disk contains a radial annular mounting flange, fixedly connected to the radial annular part of the journal by means of bolts (2), while the bolts (2) successively pass through the fastening holes, made in the radial annular fastening flange of the turbine disk and in the radial annular part of the trunnion, characterized in that the radial annular part of the trunnion contains holes for air circulation, and the holes are made between the fastening holes of the trunnion. ! 2. The assembly according to claim 1, in which the radial annular mounting flange of the turbine disk is made in the form of a toothed radial annular strip containing teeth separated by depressions, wherein the turbine mounting holes are made in the teeth of said toothed strip. ! 3. The assembly of claim 2, wherein the recesses of the radial annular fastening flange are configured to align with the air circulation holes provided on the radial annular portion of the journal. ! 4. An assembly according to one of claims 1 to 3, in which the air circulation holes and the fastening holes are located in the circumferential direction on the radial annular part of the journal. !five. The assembly according to one of claims 1 to 3, in which the trunnion contains a truncated tapered part at the outlet of its radial annular part containing an inner radial section of mechanical reinforcement. ! 6. The assembly according to claim 1, in which a sealing disc installed at the outlet of the trunnion is bolted to the journal and the turbine disk, wherein the sealing disc comprises circulation holes aligned with the air circulation holes of the journal. ! 7