Patent ID: 9551235
Date: 2017-01-24
CPC Classifications: F01D

Claim:
1. An axial flow machine, comprising: rotor-side rotor blades wherein each rotor-side rotor blade comprises a root and a base; stator-side guide vanes, wherein the rotor blades are secured to a rotor shaft, the roots positively engaging in correspondingly undercut axial channels in a rotor shaft, wherein the bases are formed as heat shields of the rotor shaft and have cavities which communicate with one another and with a source of cooling air, and wherein there is a gap between adjacent bases of adjacent rotor blades in a circumferential direction of the rotor shaft, the gap communicating with the cavities wherein the gap extends between the bases transversely to the circumferential direction on each side of a parting plane which forms a center of the gap, wherein the gap is sealed on a gas flow side by flat-strip type sealing strips, which are arranged with their longitudinal edges in opposing grooves in side faces of the bases which are facing the parting plane; and a further sealing strip arranged at at least one end face of the adjacent bases at edges of the side faces of the bases which extend in a radial direction of the rotor shaft, wherein the further sealing strip is curved about an axis perpendicular to a longitudinal plane of the sealing strip and is arranged in a corresponding curved groove in the side faces of the bases.