TRUNNION FOR HIGH-PRESSURE TURBIN AND TURBOJET ENGINE INCLUDING SUCH TRUNNION Russian patent published in 2018 - IPC F01D25/18 F02C7/28 F02C7/06 

FIELD: machine building.

SUBSTANCE: trunnion for a high-pressure turbine is configured to be arranged between a shaft of a low-pressure turbine and an inner surface of a seal mounting of the low-pressure turbine and comprises drop-launching extension and a recess. Drop-launching extension is arranged so as to extend opposite a flared portion of the inner surface of the seal mounting, such that when the trunnion is rotated about the shaft of the low-pressure turbine, oil, which tends to penetrate between the trunnion and the seal mounting, is thrown by centrifugal effect from the drop-launching extension towards the flared portion of the inner surface of the seal mounting. Recess is located on the outer surface of the trunnion, is arranged to stop oil penetration between the trunnion and the seal mounting and causes oil separation towards the inner surface of the seal mounting due to the centrifugal effect. Drop-launching extension has an outer surface inclined relative to the axis of rotation of the trunnion, contributing to the direction of the oil towards the recess due to the centrifugal effect when the trunnion is rotated. Another invention of the group relates to a turbojet engine in which a high pressure turbine comprises said trunnion.

EFFECT: group of inventions enables to prevent the flow of oil upstream from the high pressure turbine of the turbojet engine.

4 cl, 4 dwg