Transition duct support bracket wear cover
View Patent ↗A wear cover for use on a gas turbine transition duct support bracket is disclosed. The wear cover, which is manufactured from a single piece of sheet metal, does not require complex manufacturing processes or tools, thereby reducing component cost. The wear cover comprises first and second leg portions substantially parallel to each other and each generally perpendicular to a third leg portion. Each of the leg portions serve to protect a surface of a support bracket finger from excessive wear associated with frictional contact with mounting blocks of a transition duct. The wear cover is designed to slip onto a support bracket finger through a first opening and is fixed to the finger by a means such as welding.
1. A support bracket assembly having improved wear resistance utilized to position a transition duct in a gas turbine combustor, said bracket assembly comprising:
a support bracket comprising:
a mounting plate having a plurality of holes for securing said support bracket assembly to an engine;
a plurality of support arms extending outward from said mounting plate, each of said support arms having at least one finger for engagement with a transition duct, said at least one finger having a first thickness, first width, and first length;
a reinforcement plate generally perpendicular to said mounting plate and fixed to said mounting plate and said support arms;
a wear cover having a second thickness positioned substantially around and fixed to each of said fingers, said wear cover comprising:
a first leg portion having a second length and second width;
a second leg portion in spaced relation and generally parallel to said first leg portion and having a third length and third width;
a third leg portion generally perpendicular to each of said first leg portion and said second leg portion and having a fourth length and fourth width;
said first leg portion connected to said third leg portion at a first region of curvature and said second leg portion connected to said third leg portion at a second region of curvature such that said wear cover has a first opening opposite said third leg portion; and,
wherein said second, third, and fourth widths of said wear cover are substantially equal.
2. The support bracket assembly of claim 1 wherein said support bracket contains four fingers.
3. The support bracket assembly of claim 1 wherein said first thickness of said at least one finger is at least 0.250 inches.
4. The support bracket assembly of claim 1 wherein said second thickness of said wear cover is at least 0.031 inches.
5. The support bracket assembly of claim 1 wherein said second and third lengths of said wear cover are substantially equal.
6. The support bracket assembly of claim 5 wherein said second and third lengths are greater than said fourth length of said wear cover.
7. The support bracket assembly of claim 5 wherein said second and third lengths of said wear cover are greater than said first length of said at least one finger.
8. The support bracket assembly of claim 1 wherein said first opening of said wear cover is greater than said first thickness of said at least one finger.
9. The support bracket assembly of claim 1 wherein said wear cover is welded to said at least one finger.
10. The support bracket assembly of claim 1 wherein said wear cover is manufactured from a material having a hardness greater than that of said support bracket.