Leaf seal and method of producing a leaf seal
US8585058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3292
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a multiplicity of spaced-apart leaves (26) which are arranged in a concentric circle around the axis and are fixed in their position by welded connections produced by electron beam welding, the leaves (26), with their surfaces, being oriented essentially parallel to the axis. The welded connections of the leaves are improved by the leaves (26) being designed in such a way and being arranged in the leaf seal in such a way that they abut against one another at the side edges directly or via intermediate spacers (27) along at least one contact line (36) extending over a plurality of leaves (26), and by the welded connections being designed as welds directed along the at least one contact line (36) and oriented in axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.