Patent ID: 6705088
Filing Date: 2004-03-16
Classification: F23R

Abstract:
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, a plurality of channels extending along said first outer wall proximate said second inner end, and a plurality of lands located between said channels; 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 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 each of said channels is separated from immediately adjacent channels by one of said lands.