A turbomachine includes a plurality of transition ducts and a support ring assembly. The outlet of a transition duct includes an inner flange and an outer flange. The turbomachine includes bore holes defined in the inner flange and outer flange, mating bore holes defined in the support ring assembly
A turbomachine includes a plurality of transition ducts and a support ring assembly. The outlet of a transition duct includes an inner flange and an outer flange. The turbomachine includes bore holes defined in the inner flange and outer flange, mating bore holes defined in the support ring assembly, and mechanical fasteners connecting the inner flange and the outer flange to the support ring assembly. A first one of the bore holes or mating bore holes has a first maximum radial gap and a first maximum tangential gap relative to an associated mechanical fastener. A second one of the bore holes or mating bore holes has a second maximum radial gap and a second maximum tangential gap relative to an associated mechanical fastener. The second maximum radial gap is greater than the first maximum radial gap or the second maximum tangential gap is greater than the first maximum tangential gap.
대표청구항▼
1. A turbomachine, comprising: a plurality of transition ducts disposed in a generally annular array and comprising a first transition duct and a second transition duct, each of the plurality of transition ducts comprising an upstream portion including an inlet and an aft end opposite the inlet, a d
1. A turbomachine, comprising: a plurality of transition ducts disposed in a generally annular array and comprising a first transition duct and a second transition duct, each of the plurality of transition ducts comprising an upstream portion including an inlet and an aft end opposite the inlet, a downstream portion including an outlet and a head end opposite the outlet, and a passage defining an interior and extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis, the outlet of each of the plurality of transition ducts offset from the inlet along the longitudinal axis and the tangential axis, the outlet of at least one transition duct of the plurality of transition ducts comprising an inner flange and an outer flange, wherein a plurality of bore holes are defined in the inner flange and the outer flange of the outlet of the at least one transition duct; and wherein an unbolted joint is defined between the aft end of the upstream portion and the head end of the downstream portion of each transition duct of the plurality of transition ducts, the unbolted joint being configured to permit movement between the upstream portion and the downstream portion along the longitudinal axis, the radial axis, and the tangential axis;a support ring assembly downstream of the plurality of transition ducts along a hot gas path, wherein a plurality of mating bore holes are defined in the support ring assembly; anda plurality of mechanical fasteners connecting the inner flange and the outer flange of the at least one transition duct to the support ring assembly, each of the plurality of mechanical fasteners extending through a bore hole and a mating bore hole,wherein a first one of the bore holes or mating bore holes has a first maximum radial gap and a first maximum tangential gap relative to the mechanical fastener extending through the first one of the bore holes or mating bore holes,wherein a second one of the bore holes or mating bore holes has a second maximum radial gap and a second maximum tangential gap relative to the mechanical fastener extending through the second one of the bore holes or mating bore holes, and wherein the second maximum radial gap is greater than the first maximum radial gap or the second maximum tangential gap is greater than the first maximum tangential gap. 2. The turbomachine of claim 1, wherein the first maximum radial gap and the first maximum tangential gap are each less than or equal to 0.010 inches. 3. The turbomachine of claim 1, wherein the second maximum radial gap or the second maximum tangential gap is less than or equal to 0.200 inches. 4. The turbomachine of claim 1, wherein a third one of the bore holes or mating bore holes has a third maximum radial gap and a third maximum tangential gap relative to the mechanical fastener extending through the third one of the bore holes or mating bore holes, and wherein the third maximum radial gap is greater than the first maximum radial gap and the third maximum tangential gap is greater than the first maximum tangential gap. 5. The turbomachine of claim 4, wherein the third maximum radial gap and the third maximum tangential gap are less than or equal to 0.200 inches. 6. The turbomachine of claim 4, wherein the third one is a plurality of third ones. 7. The turbomachine of claim 1, wherein the plurality of bore holes or the plurality of mating bore holes includes only a single first one. 8. The turbomachine of claim 1, wherein the plurality of bore holes or the plurality of mating bore holes includes only a single second one. 9. The turbomachine of claim 1, wherein the first one is a first one of the plurality of bore holes and the second one is a second one of the plurality of bore holes. 10. The turbomachine of claim 1, wherein each of the plurality of mechanical fasteners comprises a bolt. 11. The turbomachine of claim 1, wherein the outlet of each of the plurality of transition ducts is further offset from the inlet along the radial axis. 12. The turbomachine of claim 1, further comprising a turbine section in communication with plurality of transition ducts, the turbine section comprising the support ring assembly and a first stage bucket assembly. 13. The turbomachine of claim 12, wherein no nozzles are disposed upstream of the first stage bucket assembly. 14. A turbomachine comprising: a plurality of transition ducts disposed in a generally annular array and comprising a first transition duct and a second transition duct, each of the plurality of transition ducts comprising an upstream portion including an inlet and an aft end opposite the inlet a downstream portion including an outlet and a head end opposite the outlet, and a passage defining an interior and extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis, the outlet of each of the plurality of transition ducts offset from the inlet along the longitudinal axis and the tangential axis, the outlet of at least one transition duct of the plurality of transition ducts comprising an inner flange and an outer flange, wherein a plurality of bore holes are defined in the inner flange and the outer flange of the outlet of the at least one transition duct; and wherein an unbolted joint is defined between the aft end of the upstream portion and the head end of the downstream portion of each transition duct of the plurality of transition ducts, the unbolted joint being configured to permit movement between the upstream portion and the downstream portion along the longitudinal axis, the radial axis, and the tangential axis;a support ring assembly downstream of the plurality of transition ducts along a hot gas path, wherein a plurality of mating bore holes are defined in the support ring assembly, anda plurality of mechanical fasteners connecting the inner flange and the outer flange of the at least one transition duct to the support ring assembly, each of the plurality of mechanical fasteners extending through a bore hole and mating bore hole;wherein a single first one of the bore holes or mating bore holes has a first maximum radial gap and a first maximum tangential gap relative to the mechanical fastener extending through the first one of the bore holes or mating bore holes,wherein a second one of the bore holes or mating bore holes has a second maximum radial gap and a second maximum tangential gap relative to the mechanical fastener extending through the second one of the bore holes or mating bore holes, and wherein the second maximum radial gap is greater than the first maximum radial gap or the second maximum tangential gap is greater than the first maximum tangential gap, andwherein a plurality of third ones of the bore holes or mating bore holes each have a third maximum radial gap and a third maximum tangential gap relative to the mechanical fastener extending through the third ones of the bore holes or mating bore holes, and wherein each third maximum radial gap is greater than the first maximum radial gap and each third maximum tangential gap is greater than the first maximum tangential gap. 15. The turbomachine of claim 14, wherein the first maximum radial gap and the first maximum tangential gap are each less than or equal to 0.010 inches. 16. The turbomachine of claim 14, wherein the second maximum radial gap or the second maximum tangential gap is less than or equal to 0.200 inches, and wherein each of the plurality of third maximum radial gaps and third maximum tangential gaps is less than or equal to 0.200 inches. 17. The turbomachine of claim 14, wherein the plurality of bore holes or the plurality of mating bore holes includes only a single second one.
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