Back to results
US 8,984,896 B2Granted
Interlocking combustor heat shield panels
AssigneePratt & Whitney Canada Corp.
InventorsNigel Caldwell Davenport, Eduardo David Hawie
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePratt & Whitney Canada Corp.
InventorsNigel Caldwell Davenport, Eduardo David Hawie
Estimating the term…
A combustor heat shield assembly comprises a circumferential array of heat shield panels individually mounted to an inner surface of a combustor shell. Each heat shield panel has a sealing rail extending from a back side thereof and a plurality of bolted connections securely holding the heat shield panel on the combustor shell with the sealing rail in sealing contact with the inner surface of the combustor shell. Each pair of adjacent heat shield panels comprises first and second panels having adjoining lateral edges, the first panel having a boltless area on its back side at a location adjacent to its adjoining lateral edge. The second panel has a first one of its bolted connections provided adjacent to its adjoining lateral edge and in facing relationship with the boltless area of the first panel. A tab projects from the lateral edge of the second panel in overlapping relationship with at least a portion of the boltless area of the first panel for transferring a force from the first bolted connection of the second panel to the boltless area of the first panel.
A combustor heat shield assembly comprising a circumferential array of heat shield panels individually mounted to an inner surface of a combustor shell, each pair of adjacent heat shield panels comprising first and second panels having adjoining lateral edges, a stud projecting from a first corner region on the back side of the first panel adjacent its adjoining lateral edge, a tab projecting from said corner region of said first panel in overlapping relationship with an adjacent corner region on said second panel, the adjacent corner region of the second panel having no stud.
A combustor comprising a combustor shell circumscribing a combustion chamber, at least one circumferential array of heat shield panels mounted to an interior side of the combustor shell, the heat shield panels having a back side disposed in a spaced-apart facing relationship with the interior side of the combustor shell, the heat shield panels having studs extending from the back side thereof and through corresponding mounting holes defined in the combustor shell, each stud having a threaded distal end portion extending beyond an outer side of the combustor shell and carrying a nut, the heat shield panels further having sealing rails extending from the back side thereof in sealing engagement with the interior side of the combustor shell, wherein each pair of adjacent heat shield panels comprises first and second panels having adjoining lateral edges, said first panel having a studless corner area on the back side thereof at a location adjacent to its adjoining lateral edge, wherein a corner stud of the studs of the second panel is provided in a corner area thereof adjacent its lateral adjoining edge and generally in alignment with said studless corner area of said first panel, and wherein said first and second panels have overlapping lateral portions between said corner stud of the second panel and the studless corner area of the first panel, the lateral overlapping portions defining a load path for transferring a holding force from the corner stud of the second panel to the boltless corner area of the first panel, thereby pushing a portion of the sealing rail in the vicinity of the boltless corner area on the first panel in sealing contact with the interior side of the combustor shell.
Dependencies are inferred from the claim text.