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US 2012/0125585 A1Published application
Cmc wall structure with integral cooling channels
AssigneeSiemens Power Generation, Inc.
InventorsJay A. Morrison, Douglas A. Keller, Malberto F. Gonzalez, Jay E. Lane
Life of this patent
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Abstract
A ceramic matrix composite wall structure (20A) constructed of interlocking layers (22A, 24A) of woven material with integral cooling channels (28A, 32A). The CMC layer closest to the hot gas path (41) contains internal cooling tubes (26A, 30A) protruding into a ceramic insulating layer (40A). This construction provides a cooled CMC lamellate wall structure with an interlocking truss core.
Claims20
A CMC wall structure, comprising:
- front and back CMC sheets, each sheet comprising a plurality of parallel tubes interconnected by integrally woven spans;
- the tubes and the spans forming a corrugated back surface on the front CMC sheet and a mating corrugated front surface on the back CMC sheet;
- wherein
- the corrugated back surface on the front CMC sheet is nested with and bonded to the corrugated front surface of the back CMC sheet to form a CMC sandwich structure with an interlocked truss core and a front and a back row of the tubes.
1 more element
A CMC wall structure comprising
- front and back CMC sheets each formed of 3-dimensional weaves of oxide fibers infused with an oxide matrix with integral tubes providing cooling channels within the sheets;
- the tubes in each sheet connected in parallel forming a corrugated front and back surface on the front sheet, and a corrugated front surface on the back sheet;
- the sheets stacked in a nested configuration to construct a CMC sandwich structure with an interlocked truss core comprising a front row and a back row of the tubes;
- an insulating layer applied to the corrugated front surface of the first sheet;
- whereby interlaminar strengths between the two sheets and between the front sheet and the insulating layer are improved by tortuous interlaminar stress paths provided in the CMC wall structure.
2 more elements
(canceled)
Dependencies are inferred from the claim text.