Patent ID: 8043050
Filing Date: 2011-10-25
Classification: F01D

Abstract:
1. A gap seal for radially sealing a gap which extends axially and radially between two blades of a turbomachine, the seal comprising: first and second circumferentially adjacent blades, the blades forming an axially and radially extending gap between the blades, each blade having a root and an axially extending longitudinal slot open towards the gap on each blade root, each slot having an axial end; a strip sealing element having longitudinal sides which engage in the two longitudinal slots and bridges the gap; wherein the first blade has a projection on the first blade root circumferentially projecting from the first blade root and circumferentially and radially extending at least in the region of the first blade longitudinal slot and bridges the axial longitudinal end of the gap; wherein the second blade has a step-shaped recess on the second blade root which recess is complementary to the projection of the first blade and in which recess the projection engages; wherein the projection has a transverse slot which extends in the circumferential direction and is open towards the gap; and wherein the sealing element includes an end face which engages in the transverse slot.