Patent ID: 9169738
Filing Date: 2015-10-27
Classification: F01D,F05D

Abstract:
1. A shaft seal of a shaft, supported in a bearing housing, of a turbomachine between a cavity in the bearing housing and a wheel back space of a rotating wheel of the turbomachine, comprising: a rotating wheel-side seal between the bearing housing and the shaft; a bearing-side seal between the bearing housing and the shaft, an oil outlet chamber between the rotating wheel-side seal and the bearing-side seal, the oil outlet chamber being delimited by a third seal between the bearing housing and the shaft; a gas discharge chamber arranged between the third seal and the rotating wheel-side seal; an oil drain channel arranged into the bearing housing radially outside the oil outlet chamber; an insert piece integral with the bearing housing and being formed monolithically, the insert piece having an inner contour surface extending between the bearing housing and a flanged end of the insert piece extending radially further than the inner contour surface, the flanged end of the insert piece being delimited by a passageway of the oil drain channel; and at least one oil splashing device constructed as a bore in a flange arranged opposite to and separated from the inner contour surface of the insert piece by the passageway of the oil drain channel, the at least one oil splashing device being arranged in the region of the oil drain channel for injecting oil onto the inner contour surface of the insert piece and splashing the region of the oil drain channel with oil to actively cool the shaft seal.