COMBUSTOR BASKET COOLING RING
A cooling ring ( 102 ) of a combustor basket system ( 110 ) has a transition zone 108 that extends to a cooling channel ( 106 ) at a cooling channel entrance ( 104 ). The transition zone ( 108 ) has the substantially the same material strength throughout the length of the transition zone ( 108 ). By having the same material strength throughout the length of the transition zone ( 108 ), the cooling ring ( 102 ) is able to withstand greater stresses than previously used cooling rings. One way in which this is accomplished is by having a uniform thickness.
1 . A combustor basket system comprising:
a cooling ring comprising a transition zone, wherein the transition zone extends from a transition zone start to a cooling channel entrance; and
wherein the transition zone comprises a cross-section profile configured to provide a substantially uniform material strength.
2 . The system of claim 1 , wherein the transition zone has a uniform thickness.
3 . The system of claim 1 , wherein the cooling ring is conical shaped.
4 . The system of claim 3 , wherein the cooling ring can withstand temperatures substantially above 700 C.° without failure.
5 . The system of claim 4 , wherein an outer diameter of the cooling ring is larger at a first location of the transition zone than at another location of the transition zone.
6 . The system of claim 5 , wherein the outer diameter of the cooling ring is greatest closest to the cooling channel entrance.
7 . The system of claim 1 , wherein the basket cooling system has a transition zone that is 75% of an active combustion length.
8 . The system of claim 1 , wherein the transition zone has a step-like feature at the cooling channel entrance.
9 . The system of claim 1 , wherein there is an angle α that is between about 3 to 10°.
10 . The system of claim 9 , wherein the thickness of the transition zone ( 108 ) is between 5-8 mm.
11 . A cooling ring for use with a basket cooling system comprising:
a wall having an outer surface and an inner surface; wherein the wall forms a transition zone that extends to a cooling channel entrance of the basket cooling system;
wherein the wall has a thickness which is the distance between the outer surface and the inner surface, and
wherein the material strength of the wall is substantially uniform throughout the transition zone.
12 . The cooling ring of claim 11 , wherein the wall has a uniform thickness.
13 . The cooling ring of claim 11 , wherein the cooling ring ( 102 ) is conical shaped.
14 . The cooling ring of claim 11 , wherein the cooling ring can withstand temperatures substantially above 700 C.° without failure.
15 . The cooling ring of claim 11 , wherein an outer diameter of the cooling ring is larger at a transition zone end than at transition zone start.
16 . The cooling ring of claim 15 , wherein the outer diameter of the cooling ring is greatest closest to a cooling channel entrance.
17 . The cooling ring of claim 11 , wherein the basket cooling system has a transition zone that is 75% of an active combustion length.
18 . The cooling ring of claim 11 , wherein the transition zone has a step-like feature located proximate to a cooling channel entrance.
19 . The cooling ring of claim 11 , wherein there is an angle α that is between about 3 to 10°.
20 . The cooling ring of claim 11 , wherein the thickness of the transition zone is between 5-8 mm.