Combustion liner damper
View Patent ↗The present invention are directed towards a system and method for providing a way of reducing the vibrations and wear between mating components of a gas turbine combustor. The gas turbine combustor includes a flow sleeve having a plurality of liner stops and a combustion liner located radially within the flow sleeve. Spring dampers are positioned between the combustion liner and the flow sleeve to restrict the relative movement between the flow sleeve and the combustion liner and dampen vibrations at their assembly location. The spring dampers are capable of compressing to permit thermal growth between the combustion liner and flow sleeve.
1. A spring damper for use in a gas turbine combustor comprising:
a generally corrugated body having a thickness and an axial length, an inner radial wall portion connected to an outer radial wall portion by a pair of radially extending sidewalls;
a plurality of generally U-shaped portions located in each of the inner and outer wall portions; a generally straight portion connecting said plurality of generally U-shaped portions located in the inner wall and a generally straight portion connecting said plurality of generally U-shaped portions located in the outer wall; wherein said straight portion in the outer wall is generally parallel to said straight portion in the inner wall;
a retention mechanism extending generally parallel to the axial length of the inner radial wall portion being attached to it and applying a pre-load force against a combustion liner, and the outer wall portion applying a pressure to a flow sleeve; the said plurality of U-shaped portions in the outer wall being generally symmetric to said plurality of generally U-shaped portions in the inner wall;
wherein the generally U-shaped portions in the inner radial wall portion opposes the generally U-shaped portions in the outer radial wall portion.
2. The spring damper of claim 1 fabricated from a material having a spring constant and having a material thickness up to 0.090 inches.
3. The spring damper of claim 2 , wherein the pair of radially extending sidewalls do not have generally U-shaped portions.
4. The spring damper of claim 1 , wherein the generally U-shaped portions of the inner radial wall portion are spaced a distance apart from the generally U-shaped portions of the outer radial wall portion.
5. The spring damper of claim 1 , wherein the damper compresses in a radial direction upon thermal growth of the combustion liner.