Patent ID: 8585058
Filing Date: 2013-11-19
Classification: F01D,F16J

Abstract:
1. A leaf seal for sealing a shaft rotating about an axis, the leaf seal comprising: a multiplicity of spaced-apart leaves arranged in a concentric circle around the axis with an angular offset between the individual leaves, and fixed in their position by electron beam welded connections, the leaves having first side edges running parallel to said axis, second side edges running perpendicular to said axis, and surfaces, the leaves being oriented essentially parallel to the axis, wherein the leaves are configured and arranged in the leaf seal so that they directly abut against one another at said second side edges with a point-to-point contact between each pair of neighboring leaves, said point-to-point contact lying on a contact line which is concentric to said axis and extends along said second side edges over a plurality of leaves, and wherein the welded connections comprise a welding seam running along and restricted to said contact line.