Advanced crossfire tube cooling scheme
AssigneePower Systems Mfg., LLC
InventorsVincent C. Martling, James H. Leahy JR., Daniel J. Sullivan
Life of this patent
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Abstract
A crossfire tube assembly with telescoping inner and outer crossfire tubes with an enhanced cooling mechanism for connecting adjacent combustors in a gas turbine is disclosed. The enhanced cooling configuration includes a plurality of channels formed in the telescoping region of the inner and outer crossfire tubes of the assembly to improve heat transfer and reduce local operating temperatures such that component life is extended.
Claims14
A crossfire tube assembly for connecting adjacent combustors in a gas turbine, said crossfire tube assembly comprising:
- a hollow inner tube having a first inner end, a second inner end, a first inner wall having a first axis defined therethrough, and a first outer wall coaxial with and radially outward from said first inner wall, said first outer wall having a first diameter at said second inner end, said inner tube having a plurality of first air purge holes extending from said first outer wall to said first inner wall, and a plurality of channels extending along said first outer wall proximate said second inner end;
- a hollow outer tube having a first outer end, a second outer end, a second inner wall, and a second outer wall coaxial with and radially outward from said second inner wall, said second inner wall and having a second diameter at said first outer end, said outer tube having a plurality of second air purge holes extending from said second outer wall to said second inner wall;
- wherein said first diameter is slightly less than said second diameter, a portion of said hollow inner tube is telescopically received within said hollow outer tube, said second inner end is located radially inward from said second inner wall, and said first inner wall communicates with said second outer wall via said channels.
A crossfire tube assembly for connecting adjacent combustors in a gas turbine, said crossfire tube assembly comprising:
- a hollow inner tube having a first inner end, a second inner end, a first inner wall, and a first outer wall coaxial with and radially outward from said first inner wall, said first outer wall having a first diameter at said second inner end, said inner tube having a plurality of first air purge holes extending from said first outer wall to said first inner wall;
- a hollow outer tube having a first outer end, a second outer end, a second inner wall having a second axis defined therethrough, and a second outer wall coaxial with and radially outward from said second inner wall, said second inner wall and having a second diameter at said first outer end, said outer tube having a plurality of second air purge holes extending from said second outer wall to said second inner wall, and a plurality of channels extending along said second inner wall proximate said first outer end;
- wherein said first diameter is slightly less than said second diameter, a portion of said hollow inner tube is telescopically received within said hollow outer tube, said second inner end is located radially inward from said second inner wall, and said first inner wall communicates with said second outer wall via said channels.
Dependencies are inferred from the claim text.