Transition piece external frame support
First Claim
1. A tubular transition piece for connection between a gas turbine combustor and a stage of the gas turbine, the transition piece having an upstream end for connection to the gas turbine combustor and a downstream or aft end for connection to the turbine stage, the aft end having an opening defined by radially inner and outer walls and a pair of opposite side walls, and wherein the aft end is formed with a peripheral rib extending about the end opening and wherein at least one of said radially inner and outer walls has an external structural frame member fixedly secured thereto only at a lateral mid-point of said one of said radially inner and outer walls and extending substantially completely between said opposite side walls, said exterior structural frame member providing resistance to external pressure at said aft end while permitting said transition piece to expand thermally.
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Accused Products
Abstract
A transition piece for connection between a gas turbine combustor and a stage of the gas turbine, the transition piece being generally tubular and having an upstream end for connection to the gas turbine combustor and a downstream or aft end for connection to the turbine stage, the aft end defined by radially inner and outer sides, and wherein the aft end is formed with a peripheral rib extending about the end and wherein at least one of the radially inner and outer sides has an external frame support secured thereto and extending substantially completely between the opposite sides which provides resistance to external pressure at the aft end while permitting the transition piece to expand thermally.
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Citations
15 Claims
- 1. A tubular transition piece for connection between a gas turbine combustor and a stage of the gas turbine, the transition piece having an upstream end for connection to the gas turbine combustor and a downstream or aft end for connection to the turbine stage, the aft end having an opening defined by radially inner and outer walls and a pair of opposite side walls, and wherein the aft end is formed with a peripheral rib extending about the end opening and wherein at least one of said radially inner and outer walls has an external structural frame member fixedly secured thereto only at a lateral mid-point of said one of said radially inner and outer walls and extending substantially completely between said opposite side walls, said exterior structural frame member providing resistance to external pressure at said aft end while permitting said transition piece to expand thermally.
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11. A transition piece for connection between a combustor and a stage of a gas turbine, said transition piece having an upstream end adapted for connection to the combustor and a downstream end adapted for connection to the stage of the gas turbine;
- said downstream end having an opening defined by radially inner and outer walls and opposite side walls, said opening surrounded by an integral frame including a peripheral rib extending at least about said radially inner and outer walls of said integral frame;
an external structural frame member connected to one of said radially inner and outer walls and extending substantially completely between said opposite side walls, said external structural frame member fixedly secured only at one location along a length dimension of said external frame member to thereby provide structural support to said transition piece against external pressure but to permit relative movement between said transition piece and said external structural frame member due to thermal expansion of said transition piece. - View Dependent Claims (12, 13, 14, 15)
- said downstream end having an opening defined by radially inner and outer walls and opposite side walls, said opening surrounded by an integral frame including a peripheral rib extending at least about said radially inner and outer walls of said integral frame;
Specification