Gas turbine engine and method of assembling same
First Claim
1. A method for assembling a gas turbine engine, said method comprising:
- providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction;
providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction;
coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor;
coupling a plurality of yokes to a hub assembly such that the plurality yokes are coupled to the plurality of spokes using at least one expandable pin;
coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame; and
adjusting the plurality of spokes to align the bearing in a radial direction.
1 Assignment
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Accused Products
Abstract
A method for assembling a gas turbine engine that includes providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction, providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction, coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor, coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame, and adjusting the plurality of spokes to align the bearing in a radial direction.
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Citations
14 Claims
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1. A method for assembling a gas turbine engine, said method comprising:
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providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction; providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction; coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor; coupling a plurality of yokes to a hub assembly such that the plurality yokes are coupled to the plurality of spokes using at least one expandable pin; coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame; and adjusting the plurality of spokes to align the bearing in a radial direction. - View Dependent Claims (2, 3, 4)
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5. A low-pressure turbine comprising:
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an inner rotor comprising a first plurality of turbine blade rows configured to rotate in a first direction; an outer rotor comprising a second plurality of turbine blade rows configured to rotate in a second direction that is opposite said first direction; a turbine mid-frame assembly comprising a plurality of spokes, a hub assembly, at least one yoke coupled to said hub assembly; a plurality of expandable pins configured to couple to each of said plurality of spokes to a respective yoke; and a bearing coupled to said turbine mid-frame assembly and said inner rotor, said spokes are adjustable to align said bearing in a radial direction. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A gas turbine engine comprising:
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an inner rotor comprising a first plurality of turbine blade rows configured to rotate in a first direction; an outer rotor comprising a second plurality of turbine blade rows configured to rotate in a second direction that is opposite said first direction; a turbine mid-frame assembly comprising a plurality of spokes, a hub assembly and at least one yoke coupled to said hub assembly; a plurality of expandable pins configured to couple each of said plurality of spokes to a respective yoke; and a bearing coupled to said turbine mid-frame assembly and said inner rotor, said spokes are adjustable to align said bearing in a radial direction. - View Dependent Claims (12, 13, 14)
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Specification