Coupling assembly for a turbine engine
A coupling assembly for a turbine engine. The coupling assembly includes a cold side component, a hot side component, and a fastening mechanism. The cold side component and the hot side component together at least partially form a combustion chamber. The fastening mechanism couples the hot side component to the cold side component. The fastening mechanism includes a stud disposed through the cold side component and a cap positioned on the stud. The cap defines a hollow interior and includes one or more first cap cooling holes. The one or more first cap cooling holes operably direct cooling air into the hollow interior such that the hollow interior provides a cushion of air between the combustion chamber and the stud.
1 . A coupling assembly for a turbine engine, the coupling assembly comprising:
a cold side component;
a hot side component, the cold side component and the hot side component together at least partially forming a combustion chamber;
a plurality of fastening mechanisms disposed through the cold side component, the plurality of fastening mechanisms including a first fastening mechanism and a second fastening mechanism positioned axially downstream of the first fastening mechanism; and
a plurality of flexible plates, each of the plurality of flexible plates being circumferentially spaced from each other and extending from a respective one of the plurality of fastening mechanisms to the hot side component and engaging the hot side component to couple the hot side component to the cold side component such that the plurality of fastening mechanisms is insulated from the combustion chamber, wherein the plurality of flexible plates comprises a first flexible plate extending axially downstream from the first fastening mechanism and radially inward to the hot side component and a second flexible plate extending axially upstream from the second fastening mechanism and radially inward to the hot side component at a location upstream of the first flexible plate such that the second flexible plate axially crosses the first flexible plate.
2 . The coupling assembly of claim 1 , wherein each of the plurality of flexible plates includes one or more flexible plate cooling holes that operably direct cooling air through the plurality of flexible plates.
3 . The coupling assembly of claim 1 , wherein the hot side component comprises a plurality of flanges, each of the plurality of flexible plates engaging a respective one of the plurality of flanges to couple the hot side component to the cold side component.
4 . The coupling assembly of claim 3 , wherein each of the plurality of flanges comprises a radial flange portion extending substantially radially from the hot side component and an axial flange portion extending substantially axially from the radial flange portion.
5 . The coupling assembly of claim 4 , wherein each of the plurality of flexible plates engages a respective axial flange portion.
6 . The coupling assembly of claim 3 , wherein the plurality of flanges comprises a first flange and a second flange positioned downstream of the first flange, the first flexible plate engaging the second flange and the second flexible plate engaging the first flange.
7 . The coupling assembly of claim 1 , wherein the first flexible plate radially crosses the second flexible plate at a substantially axial center of the first flexible plate and of the second flexible plate.
8 . The coupling assembly of claim 1 , wherein each of the plurality of flexible plates extends from a fastening mechanism coupling portion to a flange coupling portion, the first flexible plate coupled to the first fastening mechanism at the fastening mechanism coupling portion of the first flexible plate and coupled to the hot side component at the flange coupling portion of the first flexible plate, and the second flexible plate coupled to the first fastening mechanism at the fastening mechanism coupling portion of the second flexible plate and coupled to the hot side component at the flange coupling portion of the second flexible plate.
9 . The coupling assembly of claim 8 , wherein the flange coupling portion of the second flexible plate is coupled to the hot side component upstream of the flange coupling portion of the first flexible plate.
10 . The coupling assembly of claim 9 , wherein the flange coupling portion of the first flexible plate is substantially axially aligned with the second fastening mechanism, and the flange coupling portion of the second flexible plate is substantially axially aligned with the first fastening mechanism.
11 . A turbine engine comprising:
a combustion section including a combustion chamber; and
a coupling assembly comprising:
a cold side component;
a hot side component, the cold side component and the hot side component together at least partially forming the combustion chamber;
a plurality of fastening mechanisms disposed through the cold side component, the plurality of fastening mechanisms including a first fastening mechanism and a second fastening mechanism positioned axially downstream of the first fastening mechanism; and
a plurality of flexible plates, each of the plurality of flexible plates being circumferentially spaced from each other and extending from a respective one of the plurality of fastening mechanisms to the hot side component and engaging the hot side component to couple the hot side component to the cold side component such that the plurality of fastening mechanisms are insulated from the combustion chamber, wherein the plurality of flexible plates comprises a first flexible plate extending axially downstream from the first fastening mechanism and radially inward to the hot side component and a second flexible plate extending axially upstream from the second fastening mechanism and radially inward to the hot side component at a location upstream of the first flexible plate such that the second flexible plate axially crosses the first flexible plate.
12 . The turbine engine of claim 11 , wherein each of the plurality of flexible plates includes one or more flexible plate cooling holes that operably direct cooling air through the plurality of flexible plates.
13 . The turbine engine of claim 11 , wherein the hot side component comprises a plurality of flanges, each of the plurality of flexible plates engaging a respective one of the plurality of flanges to couple the hot side component to the cold side component.
14 . The turbine engine of claim 13 , wherein each of the plurality of flanges comprises a radial flange portion extending substantially radially from the hot side component and an axial flange portion extending substantially axially from the radial flange portion.
15 . The turbine engine of claim 14 , wherein each of the plurality of flexible plates engages a respective axial flange portion.
16 . The turbine engine of claim 13 , wherein the plurality of flanges comprises a first flange and a second flange positioned downstream of the first flange, the first flexible plate engaging the second flange and the second flexible plate engaging the first flange.
17 . The turbine engine of claim 11 , wherein the first flexible plate radially crosses the second flexible plate at a substantially axial center of the first flexible plate and of the second flexible plate.
18 . The turbine engine of claim 11 , wherein each of the plurality of flexible plates extends from a fastening mechanism coupling portion to a flange coupling portion, the first flexible plate coupled to the first fastening mechanism at the fastening mechanism coupling portion of the first flexible plate and coupled to the hot side component at the flange coupling portion of the first flexible plate, and the second flexible plate coupled to the first fastening mechanism at the fastening mechanism coupling portion of the second flexible plate and coupled to the hot side component at the flange coupling portion of the second flexible plate.
19 . The turbine engine of claim 18 , wherein the flange coupling portion of the second flexible plate is coupled to the hot side component upstream of the flange coupling portion of the first flexible plate.
20 . The turbine engine of claim 19 , wherein the flange coupling portion of the first flexible plate is substantially axially aligned with the second fastening mechanism, and the flange coupling portion of the second flexible plate is substantially axially aligned with the first fastening mechanism.