Integrated dome deflector member for a burner dome

Abstract

A dome structure for a combustor of a gas turbine includes a frame structure extending circumferentially about a combustor centerline axis, and a plurality of integrated dome deflector plate members mounted to the frame structure. Each of the plurality of integrated dome deflector plate members includes a dome wall, a deflector wall, and a plurality of side walls connecting the dome wall and the deflector wall to one another. A cavity is defined by the dome wall, the deflector wall, and the plurality of side walls.

Description

Technical Field

[0001] This disclosure relates to a dome structure for a combustor in a gas turbine engine. More specifically, this disclosure relates to a dome structure having a frame and a plurality of integrated dome deflector components connected thereto to form a dome structure in a gas turbine engine. Background Technology

[0002] A known gas turbine engine includes a combustor having a dome structure extending around it. The dome structure typically provides a separation between an air chamber upstream of the dome structure and a combustion chamber downstream of the dome structure. The combustor includes multiple mixer assemblies, each extending through the dome structure to supply a fuel-air mixture to the combustion chamber adjacent to the dome structure. To provide protection from heat during combustion, individual deflectors can be positioned on the combustion chamber side of the dome structure to protect the mixer assemblies and the dome structure from the heat generated during combustion of the fuel-air mixture in the combustion chamber. The deflectors are typically metallic structures, which may be coated with a high-temperature coating to provide additional protection against thermal breakdown. Both the dome structure and the individual deflectors are typically made of metallic materials. When exposed to high combustion heat, metallic deflectors tend to damage over time and require replacement. Replacing a deflector is an expensive and time-consuming process. Summary of the Invention

[0003] This disclosure addresses the aforementioned problems by providing a dome structure having a frame structure extending circumferentially around the burner centerline axis, and a plurality of integrated dome deflector components mounted to the frame structure.

[0004] A dome structure for a gas turbine combustor, the dome structure comprising: a frame structure extending circumferentially around a central axis of the combustor; and a plurality of integrated dome deflector components mounted to the frame structure, each of the plurality of integrated dome deflector components including a dome wall, a deflector wall, and a plurality of sidewalls connecting the dome wall and the deflector wall to each other, a cavity being defined by the dome wall, the deflector wall, and the plurality of sidewalls.

[0005] According to the dome structure described in the foregoing clause, the cavity is provided with at least one layer of buffer material, which includes any one of a honeycomb layer, a lattice layer, and a sponge layer.

[0006] According to the dome structure described in the foregoing clause, the frame structure includes an inner frame member extending circumferentially around the burner centerline axis and an outer frame member extending circumferentially around the burner centerline axis, the outer frame member being arranged radially outside the inner frame member.

[0007] According to the dome structure described in the foregoing clause, the frame structure further includes a plurality of rib members, the plurality of rib members being circumferentially spaced around the burner centerline axis and connecting the inner frame member and the outer frame member, and corresponding integrated dome deflector members of the plurality of integrated dome deflector members being arranged between consecutive pairs of the plurality of rib members.

[0008] According to the dome structure described in the foregoing clause, each integrated dome deflector component includes a cyclone assembly opening that extends through the dome wall and through the deflector wall.

[0009] According to the dome structure described in the foregoing clause, the dome wall includes a plurality of dome wall cooling channels passing through it, the plurality of dome wall cooling channels being arranged to provide a flow of cooling air passing through it to the cavity.

[0010] According to the dome structure described in the foregoing clause, the deflector wall includes a plurality of deflector wall cooling channels passing through it, the plurality of deflector wall cooling channels being arranged to provide cooling airflow passing through it from the cavity to the combustion chamber side of the deflector wall.

[0011] According to the dome structure described in the foregoing clause, the plurality of deflector wall cooling channels are arranged at a certain angle through the deflector wall.

[0012] According to the dome structure described in the foregoing clause, the ratio of the area (Ah1) of the cooling channel in the dome wall to the area (Ah2) of the cooling channel in the deflector wall is: Ah1 / Ah2 = one to two.

[0013] According to the dome structure described in the foregoing clause, the voltage drop (ΔP) across each integrated dome deflector component has a range of 1.5% to 3.5%.

[0014] According to the dome structure described in the foregoing clause, the ratio of the cross-sectional area (A1) of each dome deflector component to the cross-sectional area (A2) of the cavity has a range from two tenths to ninety-eight percent.

[0015] According to the dome structure described in the foregoing clause, the cooling efficiency factor (CE) of each dome deflector component has a range from 0.3% to 7%, where CE = ΔP*A2 / A1 * (Ah1 / Ah2).

[0016] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector components are circumferentially arranged and installed between the inner frame component and the outer frame component around the central axis of the burner.

[0017] According to the dome structure described in the preceding clause, each of the plurality of sidewalls is configured to engage with the sidewall of another adjacent integrated dome deflector component, thereby forming a seal between the respective adjacent integrated dome deflector components.

[0018] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector components include a first type of integrated dome deflector component and a second type of integrated dome deflector component. Each integrated dome deflector component of the first type includes a first sidewall type, and each integrated dome deflector component of the second type includes a second sidewall type. The plurality of integrated dome deflector components are installed on the frame structure in a circumferentially alternating arrangement of the first type integrated dome deflector component and the second type integrated dome deflector component.

[0019] According to the dome structure described in the foregoing clause, the first sidewall type is configured to overlap with the second sidewall type.

[0020] According to the dome structure described in the foregoing clause, the dome wall is joined to the frame structure, and each integrated dome deflector component is mounted to the frame structure via at least one of bolt joints, tongue and groove joints, and retaining clamp joints.

[0021] According to the dome structure described in the foregoing clause, the dome wall and the deflector wall are made of at least one of a metal alloy and a ceramic matrix composite material.

[0022] According to the dome structure described in the foregoing clause, the deflector wall includes a thermal coating, which is disposed on the side of the deflector wall opposite to the cavity.

[0023] According to the dome structure described in the foregoing clause, each dome deflector component includes an outer wall and an inner wall, the outer wall and the inner wall extending circumferentially between the plurality of side walls and extending longitudinally between the dome wall and the deflector wall, the dome deflector component defining a hollow box structure.

[0024] A dome structure for a gas turbine combustor, the dome structure comprising: a mounting structure extending circumferentially around a centerline axis of the combustor; and a plurality of integrated dome deflector units for mounting to the mounting structure, each of the plurality of integrated dome deflector units including a plurality of walls defining a hollow box-like structure, a cavity being defined within the hollow box-like structure.

[0025] According to the dome structure described in the foregoing clause, at least one cushioning material is provided inside the cavity, and the at least one cushioning material includes any one of honeycomb, grid and sponge.

[0026] According to the dome structure described in the foregoing clause, the mounting structure includes an inner frame unit extending circumferentially around the burner centerline axis and an outer frame unit extending circumferentially around the burner centerline axis, the outer frame being arranged radially outside the inner frame.

[0027] According to the dome structure described in the foregoing clause, the mounting structure further includes a plurality of rib units, the plurality of rib units being circumferentially spaced around the burner centerline axis and connecting the inner frame unit and the outer frame unit, and corresponding integrated dome deflector components of the plurality of integrated dome deflector components being arranged between consecutive pairs of the plurality of rib components.

[0028] According to the dome structure described in the preceding clause, each integrated dome deflector component unit has a cyclone assembly opening that extends through a first wall and through a second wall.

[0029] According to the dome structure described in the foregoing clause, the first wall includes a plurality of first wall cooling channels passing through it, the plurality of first wall cooling channels being arranged to provide a flow of cooling air passing through it to the cavity.

[0030] According to the dome structure described in the preceding clause, the second wall includes a plurality of second wall cooling channels passing through it, the plurality of second wall cooling channels being arranged to provide a flow of cooling air passing through it from the cavity to the combustion chamber side of the second wall.

[0031] According to the dome structure described in the foregoing clause, the plurality of second wall cooling channels are arranged at an angle through the second wall.

[0032] According to the dome structure described in the foregoing clause, the ratio of the area of ​​the first wall cooling channel (Ah1) to the area of ​​the second wall cooling channel (Ah2) is: Ah1 / Ah2 = one to two.

[0033] According to the dome structure described in the foregoing clause, the voltage drop (ΔP) across each integrated dome deflector unit has a range of 1.5% to 3.5%.

[0034] According to the dome structure described in the foregoing clause, the ratio of the cross-sectional area (A1) of each dome deflector unit to the cross-sectional area (A2) of the cavity has a range from two tenths to ninety-eight percent.

[0035] According to the dome structure described in the foregoing clause, the cooling efficiency factor (CE) of each dome deflector unit has a range from 0.3% to 7%, where CE = ΔP*A2 / A1 *(Ah1 / Ah2).

[0036] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector units are circumferentially arranged and installed between the inner frame unit and the outer frame unit around the central axis of the burner.

[0037] According to the dome structure described in the foregoing clause, the integrated dome deflector unit further includes a plurality of third walls connecting the first wall and the second wall, and each of the plurality of third walls is configured to engage with the third wall of another adjacent integrated dome deflector unit, thereby forming a seal between the respective adjacent integrated dome deflector units in the plurality of integrated dome deflector units.

[0038] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector units include a first type of integrated dome deflector unit and a second type of integrated dome deflector unit. Each integrated dome deflector unit of the first type includes a first and a third wall type, and each integrated dome deflector unit of the second type includes a second and a third wall type. The plurality of integrated dome deflector units are mounted to the mounting structure in a circumferentially alternating arrangement of the first type and the second type of integrated dome deflector units.

[0039] According to the dome structure described in the foregoing clause, the first third wall type is constructed to overlap with the second third wall type.

[0040] According to the dome structure described in the foregoing clause, the first wall is engaged with the mounting structure, and each integrated dome deflector unit is mounted to the mounting structure via at least a connection means.

[0041] According to the dome structure described in the foregoing clause, the first wall and the second wall are made of at least one of a metal alloy and a ceramic matrix composite material.

[0042] According to the dome structure described in the preceding clause, the second wall includes a thermal coating, which is disposed on the side of the second wall opposite to the cavity.

[0043] This disclosure addresses the aforementioned problems by providing a dome structure having a frame structure extending circumferentially around a burner centerline axis, and a plurality of integrated dome deflector components mounted to the frame structure. Each of the plurality of integrated dome deflector components includes a dome wall, a deflector wall, and a plurality of sidewalls connecting the dome wall and the deflector wall to each other. A cavity is defined between the dome wall, the deflector wall, and the plurality of sidewalls. Cooling passages are provided through the dome wall and the deflector wall, allowing cooling air to flow into the cavity from a pressure chamber upstream of the dome wall and then from the cavity to the combustion chamber side of the deflector wall. The integrated dome deflector components can be mounted to the frame structure in any number and in various ways to facilitate easy replacement of the dome deflector components when necessary. Attached Figure Description

[0044] The features and advantages of this disclosure will be apparent from the following description of various exemplary embodiments as shown in the accompanying drawings, in which similar reference numerals generally denote the same, functionally similar, and / or structurally similar elements.

[0045] Figure 1 This is a schematic partial cross-sectional side view of an exemplary high-bypass turbofan jet engine according to one aspect of this disclosure.

[0046] Figure 2 This is a partial cross-sectional side view of an exemplary burner according to one aspect of this disclosure.

[0047] Figure 3 It is based on one aspect of this disclosure. Figure 2 The rear-view front view of the dome structure taken from plane 3-3.

[0048] Figure 4 This is an enlarged front view of an integrated dome deflector component according to one aspect of this disclosure.

[0049] Figure 5 It is based on one aspect of this disclosure. Figure 4 A cross-sectional view taken at plane 5-5 through the integrated dome deflector component.

[0050] Figure 6 It is based on one aspect of this disclosure. Figure 4 A cross-sectional view taken at plane 6-6 through the integrated dome deflector component.

[0051] Figure 7 It is based on one aspect of this disclosure. Figure 5 A partial cross-sectional view of the cavity with a buffer material layer, taken at point 132 in the detail view.

[0052] Figure 8 It is based on one aspect of this disclosure. Figure 3 The cross-sectional view taken at circumferential section 8-8 depicts the circumferential arrangement between adjacent dome deflector components.

[0053] Figure 9 It is based on another aspect of this disclosure. Figure 3 The cross-sectional view taken at 8-8 of the circumferential section depicts the circumferential arrangement between adjacent dome deflector components.

[0054] Figure 10 It is based on one aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure.

[0055] Figure 11 It is based on another aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure.

[0056] Figure 12 It is based on another aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure.

[0057] Figure 13 It is based on another aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure.

[0058] Figure 14 It is based on another aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure.

[0059] Figure 15 It is based on another aspect of this disclosure. Figure 3 A partial cross-sectional view taken at plane AA depicts the dome deflector component attached to the frame structure. Detailed Implementation

[0060] The features, advantages, and embodiments of this disclosure will be set forth or apparent from consideration of the following detailed description, drawings, and claims. Furthermore, it should be understood that the following detailed description is exemplary and intended to provide further explanation, and does not limit the scope of the claimed disclosure.

[0061] Various embodiments are discussed in detail below. Although specific embodiments are discussed, this is for illustrative purposes only. Those skilled in the art will recognize that other components and constructions can be used without departing from the spirit and scope of this disclosure.

[0062] As used herein, the terms “first,” “second,” and “third” are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of the components.

[0063] The terms "upstream" and "downstream" refer to the relative directions of fluid flow within a fluid path. For example, "upstream" refers to the direction from which the fluid flows, and "downstream" refers to the direction in which the fluid flows.

[0064] A known gas turbine engine includes a combustor having a dome-shaped structure extending around it. The dome-shaped structure typically provides a separation between an air chamber upstream of the dome-shaped structure and a combustion chamber downstream of it. Multiple mixer assemblies are typically housed within the combustor, with each assembly extending through the dome-shaped structure to supply a fuel-air mixture to the combustion chamber adjacent to the dome-shaped structure. Individual deflectors are typically provided around the mixer assemblies to deflect heat from combustion away from the dome-shaped structure. Both the dome-shaped structure and the individual deflectors are typically made of metallic materials. Over time, when exposed to high combustion heat, the metallic deflectors tend to deteriorate and require replacement. Replacing deflectors is an expensive and time-consuming process.

[0065] This disclosure addresses the aforementioned problems by providing a dome structure having a frame structure extending circumferentially around a burner centerline axis, and a plurality of integrated dome deflector components mounted to the frame structure. Each of the plurality of integrated dome deflector components includes a dome wall, a deflector wall, and a plurality of sidewalls connecting the dome wall and the deflector wall to each other. A cavity is defined between the dome wall, the deflector wall, and the plurality of sidewalls. Cooling passages are provided through the dome wall and the deflector wall, allowing cooling air to flow into the cavity from a pressure chamber upstream of the dome wall and then from the cavity to the combustion chamber side of the deflector wall. The integrated dome deflector components can be mounted to the frame structure in any number and in various ways to facilitate easy replacement of the dome deflector components when necessary.

[0066] Now refer to the attached diagram, Figure 1This is a schematic partial cross-sectional side view of an exemplary high-bypass turbofan jet engine 10 (referred to herein as "engine 10") that can be incorporated into various embodiments of the present disclosure. Although further described below with reference to a ducted turbofan engine, the present disclosure is also applicable to general turbomachinery, including turbojet engines, turboprop engines, and turboshaft gas turbine engines, including marine and industrial turbine engines and auxiliary power units. Furthermore, the present disclosure is not limited to, for example, Figure 1 The illustrated inline fan turbine engine can be implemented in a non-inline fan (UDF) turbine engine. For example... Figure 1 As shown, engine 10 has an axial centerline axis 12 extending from upstream end 98 through it to downstream end 99, for reference. Typically, engine 10 may include a fan assembly 14 and a core engine 16 disposed downstream of the fan assembly 14.

[0067] The core engine 16 typically includes a housing 18 defining an annular inlet 20. The housing 18 surrounds or at least partially forms, in a series flow relationship, a compressor section (22 / 24) having a low-pressure (LP) compressor 22 and a high-pressure (HP) compressor 24; a combustor 26; a turbine section (28 / 30) including a high-pressure (HP) turbine 28 and a low-pressure (LP) turbine 30; and an injection exhaust nozzle section 32. A high-pressure (HP) rotor shaft 34 drivesly connects the HP turbine 28 to the HP compressor 24. A low-pressure (LP) rotor shaft 36 drivesly connects the LP turbine 30 to the LP compressor 22. The LP rotor shaft 36 may also be connected to the fan shaft 38 of the fan assembly 14. In certain embodiments, such as Figure 1 As shown, the LP rotor shaft 36 can be connected to the fan shaft 38 via a reduction gear 40 (e.g., in an indirect drive or gear drive configuration).

[0068] like Figure 1 As shown, the fan assembly 14 includes a plurality of fan blades 42 coupled to and extending radially outward from a fan shaft 38. An annular fan housing or nacelle 44 circumferentially surrounds at least a portion of the fan assembly 14 and / or the core engine 16. In one embodiment, the nacelle 44 may be supported relative to the core engine 16 by a plurality of circumferentially spaced outlet guide vanes or struts 46. Furthermore, at least a portion of the nacelle 44 may extend over the outer portion of the core engine 16 to define a bypass airflow passage 48 therebetween.

[0069] Figure 2 Is it like this? Figure 1 A cross-sectional side view of an exemplary burner 26 of the core engine 16 shown. Figure 2 The axial centerline 112 of the burner is depicted, which can be roughly corresponding to the axial centerline 12 of the engine. Therefore, Figure 2 The burner 26 defines the longitudinal direction of the burner corresponding to the axial centerline 112 of the burner (L). C ), the radial direction of the burner extending outward from the axial centerline 112 of the burner (R) C ) and the circumferential direction of the burner extending around the axial centerline 112 of the burner (C) C ).like Figure 2 As shown, the combustor 26 typically includes a combustor bushing 50 having an inner bushing 52 and an outer bushing 54 connected to the shroud 60. Each of the inner bushing 52 and the outer bushing 54 is an annular bushing extending circumferentially around the combustor axial centerline 112. A dome structure 56 (described in more detail below) is connected to the shroud 60 and extends in the radial direction Rc of the combustor between the inner bushing 52 and the outer bushing 54, and also extends circumferentially around the combustor axial centerline 112. The inner bushing 52, the outer bushing 54, and the dome structure 56 together define a combustion chamber 62 between them. In the combustion chamber 62, an initial chemical reaction of an ignited fuel-oxidant mixture injected into the combustion chamber 62 by the swirler assembly 58 can occur to produce combustion gases 86. The combustion gases 86 then flow further downstream via turbine nozzles 72 at the downstream end of the combustion chamber 62 into the HP turbine 28 and the LP turbine 30 ( Figure 1 ).Although Figure 2 A single swirler assembly 58 is depicted, but multiple swirler assemblies 58 exist in the burner 26, wherein each swirler assembly 58 is circumferentially spaced from each other around the axial centerline 112 of the burner.

[0070] The burner 26 further includes an outer housing 64 extending circumferentially around a burner axial centerline 112, and an inner housing 65 also extending circumferentially around a burner axial centerline 112. An outer flow passage 88 is defined between the outer housing 64 and the outer bushing 54, and an inner flow passage 90 is defined between the inner housing 65 and the inner bushing 52. The outer bushing 54 may also include a plurality of outer bushing dilution openings 68 circumferentially spaced around the outer bushing 54. Similarly, the inner bushing 52 may include a plurality of inner bushing dilution openings 69 circumferentially spaced around the inner bushing 52.

[0071] Return to reference Figure 1 During operation, air 73 enters the cabin 44 at cabin inlet 76, and a portion of the air 73 enters the compressor section (22 / 24) as compressor inlet airflow 80, where it is compressed to form compressed air 82. Another portion of the air 73 enters the bypass airflow passage 48, thus providing bypass airflow 78. Figure 2In the combustion chamber 26, compressed air 82 from the compressor section (22 / 24) enters via a diffuser (not shown). A portion of the compressed air 82(a) enters the shroud 60 to enter the pressure chamber 66 therein, while another portion of the compressed air 82(b) flows to the outer flow passage 88 and the inner flow passage 90. The compressed air 82(a) in the pressure chamber 66 passes through the swirler assembly 58 to mix with the fuel injected by the fuel nozzle assembly 70, thereby forming a fuel-oxidant mixture, which is then ignited and burned in the combustion chamber 62 to produce combustion gases 86. A portion of the compressed air 82(b) in the outer flow passage 88 can be used as dilution air supplied to the combustion chamber 62 through a plurality of outer bushing dilution openings 68, while another portion of the compressed air 82(b) in the inner flow passage 90 can also be used as dilution air supplied to the combustion chamber 62 through a plurality of inner bushing dilution openings 69.

[0072] Figure 3 The image depicts a plane 3-3 according to one aspect of this disclosure. Figure 1 and 2 The image shows a rear-view front view of the dome structure 56 taken at point ( ). As described above, the dome structure 56 extends circumferentially around the axial centerline 112 of the burner. Figure 2 As shown, the dome structure 56, together with the outer bushing 54 and the inner bushing 52, is suitably connected to the cover 60 via, for example, fasteners 92. Of course, other methods of fastening the dome structure 56 to the cover 60 can be implemented alternatively. Return to Reference Figure 3 It can be seen that the dome structure 56 includes a frame structure 100, which extends circumferentially around the axial centerline 112 of the burner. The frame structure 100 includes an inner frame member 102 extending circumferentially around the axial centerline 112 of the burner and an outer frame member 104 extending circumferentially around the axial centerline 112 of the burner. Although Figure 3 It appears that a single-piece inner frame member 102 and a single-piece outer frame member 104 are shown; however, alternatively, the inner frame member 102 and / or the outer frame member 104 may be composed of multiple segments joined together. The inner frame member 102 and the outer frame member 104 may be made of metallic materials, or may be made of composite materials, such as ceramic matrix composites, or any combination of metals and composite materials. The outer frame member 104 is arranged radially outward of the inner frame member 102.

[0073] The frame structure 100 is also considered to include a plurality of ribs 106 spaced circumferentially around the axial centerline 112 of the burner. The ribs 106 are connected to the inner frame member 102 and the outer frame member 104. The ribs 106 may also be made of metallic or composite materials and may be joined to the inner frame member 102 and the outer frame member 104 via any suitable connection (e.g., bolted or brazed / welded connection). However, in some aspects of this disclosure, as will be described below, the ribs 106 may be omitted.

[0074] The dome structure 56 further includes a plurality of integrated dome deflector components 108 mounted to the frame structure 100. As will be discussed in more detail below, each integrated dome deflector component 108 is a hollow box-like structure formed by a dome wall, deflector walls, side walls, and outer and inner walls, all integrated together as a single component, allowing each integrated dome deflector component 108 to be individually mounted to the frame structure 100. Various mounting techniques for mounting the integrated dome deflector components 108 to the frame structure 100 will be described below. Each integrated dome deflector component 108 includes a cyclone assembly opening 110 passing through it. Figure 2 As shown, the cyclone assembly 58 extends through the integrated dome deflector member 108 to enable the injection of a fuel-oxidizer mixture (not shown) into the combustion chamber 62. Figure 3 In this configuration, each integrated dome deflector component 108 is circumferentially arranged between the inner frame component 102 and the outer frame component 104 around the axial centerline 112 of the burner, and is circumferentially arranged between consecutive pairs of multiple rib members 106. However, as will be discussed below... Figure 9 As described above, when the rib member 106 is omitted, a plurality of integrated dome deflector members 108 may instead abut against each other and form a seal between them.

[0075] Now regarding Figures 4 to 6 supply Figure 3 A more detailed description of the integrated dome deflector component 108 shown is provided below. Figure 4 This is an enlarged front view of an integrated dome deflector component 108 according to one aspect of this disclosure. Figure 5 Is Figure 4 A cross-sectional view taken at plane 5-5 in the image. Figure 6 Is Figure 4 A cross-sectional view taken at plane 6-6. (See figure) Figure 5As shown, the integrated dome deflector component 108 includes a dome wall 113, a deflector wall 114, and a plurality of sidewalls 116 connecting the dome wall 113 and the deflector wall 114 to each other. A cavity 118 is defined between the dome wall 113, the deflector wall 114, and the plurality of sidewalls 116. The integrated dome deflector component 108 may also include an outer wall 120 (in Figure 4 (shown in hidden line) and inner wall 122 (also shown in hidden line) Figure 4 (Seen in hidden lines), where both the outer wall 120 and the inner wall 122 extend circumferentially between the plurality of side walls 116 and also extend longitudinally (L) between the dome wall 113 and the deflector wall 114. Thus, each of the dome wall 113, the deflector wall 114, the plurality of side walls 116, the outer wall 120, and the inner wall 122 is integrated together such that the integrated dome deflector component 108 is configured to define a hollow box-like structure having a cavity 118. The integrated dome deflector component 108 may be made of, for example, a metal alloy, a ceramic material, or a ceramic matrix composite (CMC) material, or any combination thereof.

[0076] exist Figure 6 As can be seen, the dome wall 113 includes a plurality of dome wall cooling channels 124 passing through it. The dome wall cooling channels 124 are configured to allow compressed air 82(a) to flow from the pressure chamber 66 ( Figure 2 An inlet cavity 118 is provided. Similarly, the deflector wall 114 includes a plurality of deflector wall cooling passages 126 passing through it. The deflector wall cooling passages 126 are configured to provide a flow of compressed air 82(a) from the cavity 118 to the combustion chamber side 130 of the deflector wall 114. The deflector wall cooling passages 126 may be arranged at an angle 128 to cause vortices of the compressed air 82(a) into the combustion chamber 62. The compressed air 82(a) injected from the deflector wall cooling passages 126 into the combustion chamber 62 partially provides film cooling to the combustion chamber side 130 of the deflector wall 114. Figure 4As shown, deflector wall cooling channels 126 are arranged around the cyclone assembly opening 110. The number and size of the deflector wall cooling channels 126 extending through the deflector wall 114 may depend on the desired pressure drop to be obtained across the dome deflector assembly 108. Furthermore, the deflector wall cooling channels 126 can be arranged in any of a variety of configurations depending on the desired flow of compressed air 82(a) supplied to the combustion chamber side 130 of the deflector wall 114 via the deflector wall cooling channels 126. For example, the deflector wall cooling channels 126 may be arranged in multiple circumferential rows around the cyclone assembly opening 110, each circumferential row being arranged at a different radial distance from the cyclone assembly opening 110. Alternatively, the deflector wall cooling channels 126 may be arranged such that the flow of compressed air 82(a) from the deflector cooling channels 126 provides the desired vortex. On the other hand, the dome wall cooling channels 124 may be randomly spaced around the cyclone assembly opening 110 passing through the dome wall 113, and the number and size of the dome wall cooling channels 124 may also depend on the desired pressure drop to be obtained across the dome deflector assembly 108.

[0077] Refer again Figure 4 and 5 Various parameters of the integrated dome deflector assembly 108 will be discussed. These parameters relate to obtaining the desired pressure drop (ΔP) across the integrated dome deflector assembly 108 from the pressure chamber 66 side to the combustion chamber 62 side, and to obtaining the cooling efficiency factor (CE) at the combustion chamber side 130 of the deflector wall 114. (Refer to...) Figure 5 The cross-sectional area (A1) of the integrated dome deflector component 108 can be defined by the length (L1) 121 and the width (W1) 123 of the integrated dome deflector component 108, where A1 = L1 × W1. Similarly, the area (A2) of the cavity 118 can be defined by the length (L2) 119 and the width (W2) 117 of the cavity 118, where A2 = L2 × W2. For the dome deflector component 108, the ratio of area A2 to area A1 (A2 / A1) can range from two-tenths (0.2) to ninety-eight percent (0.98). Furthermore, the ratio of the total area (Ah1) of the dome wall cooling channels 124 passing through the dome wall 113 to the total area (Ah2) of the deflector wall cooling channels 126 passing through the deflector wall 114 is defined as Ah1 / Ah2, and can have a range from one (1.0) to two (2.0). When each of the dome wall cooling channels 124 and the deflector wall cooling channels 126 is a circular hole, the area of ​​each dome wall cooling channel 124 and the area of ​​each deflector wall cooling channel 126 are determined by A=πr 2The total area (Ah1) of the dome wall cooling channels 124 is the sum of the areas A of each dome wall cooling channel 124, and the total area (Ah2) of the deflector wall cooling channels 126 is the sum of the areas A of each deflector wall cooling channel 126. The aforementioned parameters (i.e., the ratios A2 / A1 and Ah1 / Ah2) can result in a desired pressure drop (ΔP) across the dome deflector member 108 between 1.5% (1.5%) and 3.5% (3.5%). The cooling efficiency factor (CE) can be defined as CE = ΔP × (A2 / A1) × (Ah1 / Ah2), and with the above parameters, the cooling efficiency factor (CE) can have a range from 0.3% (0.3%) to 7% (7%).

[0078] exist Figure 5 and 6 In the middle, cavity 118 is shown as a hollow cavity. However, as... Figure 7 As shown, this figure is... Figure 5 The cross-sectional view taken at detail 132 shows that cavity 118 may be filled with at least one layer of cushioning material formed as a sandwich structure 134. For example, as Figure 7 As shown, cavity 118 may include a sandwich structure 134 comprising at least one layer of buffer material, which may include, for example, a honeycomb material layer 136, a metal or composite lattice structure layer 138 (which may be formed of metal or composite material), and a sponge layer 140. Furthermore, depending on the materials used, a thermal coating 142 may be added to the exterior of the integrated dome deflector component 108, particularly to the combustion chamber side 130 of the deflector wall 114, as well as the inner wall 122 and outer wall 120.

[0079] Figure 8 It is based on one aspect of this disclosure. Figure 3 The cross-sectional view taken at circumferential section 8-8 depicts the circumferential arrangement between adjacent dome deflector members 108. As described above, when the rib member 106 is included as part of the frame structure 100, adjacent dome deflector members among the plurality of dome deflector members 108 can be connected to or abut against the rib member 106.

[0080] Figure 9 It is based on another aspect of this disclosure. Figure 3The cross-sectional view taken at circumferential section 8-8 depicts the circumferential arrangement between adjacent dome deflector members 108. When the rib member 106 is omitted from the frame structure 100, the sidewall 116 of each corresponding integrated dome deflector member 108 is configured to engage with another adjacent corresponding integrated dome deflector member 108 among the plurality of integrated dome deflector members 108 to form a seal between the respective adjacent integrated dome deflector members 108 among the plurality of integrated dome deflector members 108. For example, as Figure 9 As shown, the plurality of integrated dome deflector components 108 may include a first type of dome deflector component 144 and a second type of dome deflector component 146. The first type of dome deflector component 144 includes a first sidewall type 148, and the second type of dome deflector component 146 includes a second sidewall type 150. The first sidewall type 148 may include a first slot joint 152, and the second sidewall type 150 may include a second slot joint 154. When the first type of dome deflector component 144 and the second type of dome deflector component 146 are engaged together at the joint 156, the first sidewall type 148 and the second sidewall type 150 overlap and fit together to form a seal therebetween. A joint seal 158 may also be disposed within the joint 156. Of course, other structures can be alternatively implemented for the first sidewall type 148 and the second sidewall type 150, such as a tongue-and-groove structure with a first sidewall type 148 and a grooved second sidewall type 150, or a concave first sidewall type 148 engaging with a convex second sidewall type 150. The first sidewall type 148 and the second sidewall type 150 can also be made of flexible materials to provide a better seal between them. Therefore, as... Figure 3 As shown, when the rib member 106 is omitted, the first type of dome deflector member 144 and the second type of dome deflector member 146 are installed in the frame structure 100 in an alternating circumferential arrangement around the axial centerline 112 of the burner.

[0081] Figures 10 to 15 Each of them is in Figure 3 A partial cross-sectional view taken at plane AA depicts the various attachments of the integrated dome deflector component 108 to the inner frame component 102 and the outer frame component 104. In each aspect, the dome wall 113 is connected to the inner frame component 102 and the outer frame component 104. Figure 10In this configuration, the integrated dome deflector component 108 is connected to the inner frame component 102 and the outer frame component 104 via bolt joints 159. The integrated dome deflector component 108 includes a stud 160 that can be integrated into and projects upstream from the dome wall 113. The integrated dome deflector component 108 can be attached to the inner frame component 102 and the outer frame component 104 via the stud 160, and then secured to the inner frame component 102 and the outer frame component 104 via nuts 162, the stud 160 extending through a hole 164 in the inner frame component 102 and through a hole 166 in the outer frame component 104.

[0082] exist Figure 11 In another aspect shown, the integrated dome deflector component 108 can be connected to the inner frame component 102 via a tongue-and-groove joint 161 and to the outer frame component 104 via a bolt joint 159. The dome wall 113 may include an L-shaped flange 168 extending upstream from the dome wall 113 and radially (R) inwardly. The L-shaped flange 168 attaches the integrated dome deflector component 108 to the inner frame component 102. The dome wall 113 includes a threaded insert 170 for attaching the integrated dome deflector component 108 to the outer frame component 104. The L-shaped flange 168 can engage with the inner frame component 102 by sliding engagement, for example in a tongue-and-groove joint, and then a fastener such as a bolt 172 can be inserted through a hole 17 in the outer frame component 104 and through a hole 176 in the dome wall 113 to thread-engage the threaded insert 170. The dome deflector component 108 is thus mounted to the inner frame component 102 and the outer frame component 104.

[0083] Figure 12 It also includes a bolt joint 159 connecting the integrated dome deflector component 108 to the outer frame component 104 and a tenon joint 161 connecting the integrated dome deflector component 108 to the inner frame component 102. The L-shaped flange 168 is slidably engaged with the inner frame component 102. Figure 12 The integrated dome deflector component 108 also includes an L-shaped flange 178 projecting upstream from the dome wall 113 and extending outward in the radial direction (R). The L-shaped flange 178 is used to connect the integrated dome deflector component 108 to the outer frame component 104. Figure 12 In this aspect, the outer frame member 104 includes a stud 180 projecting upstream toward the pressure chamber 66. A retaining plate 182 is mounted on the stud 180 via a hole 183 in the retaining plate 182 and engages with an L-shaped flange 178. A spring clip 184 may be disposed in the gap between the retaining plate 182 and the dome wall 113. A nut 186 is threadedly engaged with the stud 180 to complete the connection of the integrated dome deflector member 108 to the inner frame member 102 and the outer frame member 104.

[0084] Figure 13 The integrated dome deflector component 108 according to another aspect of the present disclosure is depicted being connected to the inner frame component 102 via a tongue and groove joint 161 and to the outer frame component 104 via a bolt joint 159. Figure 13 The integrated dome deflector component 108 includes an L-shaped flange 168 that slidably engages with the inner frame member 102. The integrated dome deflector component 108 includes a longitudinal flange 188 that projects upstream from the dome wall 113 and extends in the longitudinal direction (L). The outer frame member 104 also includes a longitudinal flange 190 extending upstream in the longitudinal direction (L). The longitudinal flanges 188 and 190 engage with each other, and a fastener such as a bolt 192 is inserted through a hole 194 in the longitudinal flange 190 of the outer frame member 104 and through the longitudinal flange 188 of the integrated dome deflector component 108. A nut 198 then threadedly engages with the bolt 192 to complete the connection of the integrated dome deflector component 108 to the inner frame member 102 and the outer frame member 104.

[0085] Figure 14 The integrated dome deflector component 108 according to another aspect of the present disclosure is depicted being connected to the inner frame component 102 via a mortise joint 161 and to the outer frame component 104 via a mortise joint 161. Figure 14 The aspects include L-shaped flanges 168 and 178. The outer frame member 104 includes an L-shaped flange 200 that projects upstream in the longitudinal direction (L) and extends inward in the radial direction (R). A retaining plate 202 can be inserted between the L-shaped flange 178 of the integrated dome deflector member 108 and the L-shaped flange 200 of the outer frame member 104, and a spring clip 184 can be inserted into the gap between the retaining plate 202 and the dome wall 113. Therefore, the integrated dome deflector member 108 is connected to the inner frame member 102 and the outer frame member 104.

[0086] Figure 15 The integrated dome deflector component 108 according to another aspect of the present disclosure is depicted connected to the inner frame component 102 via a tongue and groove joint 161 and to the outer frame component 104 via a retaining clamp joint 163. Figure 15 The aspect includes an L-shaped flange 168 that slidably engages with the inner frame member 102. The L-shaped flange 204 projects upstream from the dome wall 113 and extends inward in the radial direction (R). The outer frame member 104 includes an L-shaped flange 206 that projects upstream from it and extends outward in the radial direction (R). The spring retaining clip 208 engages with the L-shaped flange 206 of the outer frame member 104 and with the L-shaped flange 204 of the dome wall 113 to connect the integrated dome deflector member 108 to the inner frame member 102 and the outer frame member 104.

[0087] For each of the aforementioned arrangements, the integrated dome deflector component 108 can be individually mounted to the frame structure in any number and in various ways to facilitate easy replacement of the dome deflector component 108 when necessary. Furthermore, each integrated dome deflector component 108 can be manufactured separately from the dome frame structure 100 and then easily mounted to the frame structure 100. Individual integrated dome deflector components 108 reduce the need to separately mount the dome components and deflector plates to the frame structure 100. Moreover, materials such as ceramic matrix composites (CMC) can be used to manufacture the integrated dome deflector component 108, wherein the CMC integrated dome deflector component 108 can be easily attached to the frame structure 100, which may be made of metallic materials. The CMC integrated dome deflector component 108 can provide better durability of the dome deflector structure, thus requiring less frequent replacement.

[0088] While the foregoing description generally pertains to gas turbine engines, it is readily understood that gas turbine engines can be implemented in a variety of environments. For example, the engine can be implemented in aircraft, but it can also be implemented in non-aircraft applications, such as power plants, marine applications, or oil and gas production applications. Therefore, this disclosure is not limited to use in aircraft.

[0089] Further aspects of this disclosure are provided by the subject matter of the following clauses.

[0090] A dome structure for a gas turbine combustor, the dome structure comprising: a frame structure extending circumferentially around a central axis of the combustor; and a plurality of integrated dome deflector components mounted to the frame structure, each of the plurality of integrated dome deflector components including a dome wall, a deflector wall, and a plurality of sidewalls connecting the dome wall and the deflector wall to each other, a cavity being defined by the dome wall, the deflector wall, and the plurality of sidewalls.

[0091] According to the dome structure described in the foregoing clause, the cavity is provided with at least one layer of buffer material, which includes any one of a honeycomb layer, a lattice layer, and a sponge layer.

[0092] According to the dome structure described in the foregoing clause, the frame structure includes an inner frame member extending circumferentially around the burner centerline axis and an outer frame member extending circumferentially around the burner centerline axis, the outer frame member being arranged radially outside the inner frame member.

[0093] According to the dome structure described in the foregoing clause, the frame structure further includes a plurality of rib members, the plurality of rib members being circumferentially spaced around the burner centerline axis and connecting the inner frame member and the outer frame member, and corresponding integrated dome deflector members of the plurality of integrated dome deflector members being arranged between consecutive pairs of the plurality of rib members.

[0094] According to the dome structure described in the foregoing clause, each integrated dome deflector component includes a cyclone assembly opening that extends through the dome wall and through the deflector wall.

[0095] According to the dome structure described in the foregoing clause, the dome wall includes a plurality of dome wall cooling channels passing through it, the plurality of dome wall cooling channels being arranged to provide a flow of cooling air passing through it to the cavity.

[0096] According to the dome structure described in the foregoing clause, the deflector wall includes a plurality of deflector wall cooling channels passing through it, the plurality of deflector wall cooling channels being arranged to provide cooling airflow passing through it from the cavity to the combustion chamber side of the deflector wall.

[0097] According to the dome structure described in the foregoing clause, the plurality of deflector wall cooling channels are arranged at a certain angle through the deflector wall.

[0098] According to the dome structure described in the foregoing clause, the ratio of the area (Ah1) of the cooling channel in the dome wall to the area (Ah2) of the cooling channel in the deflector wall is: Ah1 / Ah2 = one to two.

[0099] According to the dome structure described in the foregoing clause, the voltage drop (ΔP) across each integrated dome deflector component has a range of 1.5% to 3.5%.

[0100] According to the dome structure described in the foregoing clause, the ratio of the cross-sectional area (A1) of each dome deflector component to the cross-sectional area (A2) of the cavity has a range from two tenths to ninety-eight percent.

[0101] According to the dome structure described in the foregoing clause, the cooling efficiency factor (CE) of each dome deflector component has a range from 0.3% to 7%, where CE = ΔP*A2 / A1 * (Ah1 / Ah2).

[0102] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector components are circumferentially arranged and installed between the inner frame component and the outer frame component around the central axis of the burner.

[0103] According to the dome structure described in the preceding clause, each of the plurality of sidewalls is configured to engage with the sidewall of another adjacent integrated dome deflector component, thereby forming a seal between the respective adjacent integrated dome deflector components.

[0104] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector components include a first type of integrated dome deflector component and a second type of integrated dome deflector component. Each integrated dome deflector component of the first type includes a first sidewall type, and each integrated dome deflector component of the second type includes a second sidewall type. The plurality of integrated dome deflector components are installed on the frame structure in a circumferentially alternating arrangement of the first type integrated dome deflector component and the second type integrated dome deflector component.

[0105] According to the dome structure described in the foregoing clause, the first sidewall type is configured to overlap with the second sidewall type.

[0106] According to the dome structure described in the foregoing clause, the dome wall is joined to the frame structure, and each integrated dome deflector component is mounted to the frame structure via at least one of bolt joints, tongue and groove joints, and retaining clamp joints.

[0107] According to the dome structure described in the foregoing clause, the dome wall and the deflector wall are made of at least one of a metal alloy and a ceramic matrix composite material.

[0108] According to the dome structure described in the foregoing clause, the deflector wall includes a thermal coating, which is disposed on the side of the deflector wall opposite to the cavity.

[0109] According to the dome structure described in the foregoing clause, each dome deflector component includes an outer wall and an inner wall, the outer wall and the inner wall extending circumferentially between the plurality of side walls and extending longitudinally between the dome wall and the deflector wall, the dome deflector component defining a hollow box structure.

[0110] A dome structure for a gas turbine combustor, the dome structure comprising: a mounting structure extending circumferentially around a centerline axis of the combustor; and a plurality of integrated dome deflector units for mounting to the mounting structure, each of the plurality of integrated dome deflector units including a plurality of walls defining a hollow box-like structure, a cavity being defined within the hollow box-like structure.

[0111] According to the dome structure described in the foregoing clause, at least one cushioning material is provided inside the cavity, and the at least one cushioning material includes any one of honeycomb, grid and sponge.

[0112] According to the dome structure described in the foregoing clause, the mounting structure includes an inner frame unit extending circumferentially around the burner centerline axis and an outer frame unit extending circumferentially around the burner centerline axis, the outer frame being arranged radially outside the inner frame.

[0113] According to the dome structure described in the foregoing clause, the mounting structure further includes a plurality of rib units, the plurality of rib units being circumferentially spaced around the burner centerline axis and connecting the inner frame unit and the outer frame unit, and corresponding integrated dome deflector components of the plurality of integrated dome deflector components being arranged between consecutive pairs of the plurality of rib components.

[0114] According to the dome structure described in the preceding clause, each integrated dome deflector component unit has a cyclone assembly opening that extends through a first wall and through a second wall.

[0115] According to the dome structure described in the foregoing clause, the first wall includes a plurality of first wall cooling channels passing through it, the plurality of first wall cooling channels being arranged to provide a flow of cooling air passing through it to the cavity.

[0116] According to the dome structure described in the preceding clause, the second wall includes a plurality of second wall cooling channels passing through it, the plurality of second wall cooling channels being arranged to provide a flow of cooling air passing through it from the cavity to the combustion chamber side of the second wall.

[0117] According to the dome structure described in the foregoing clause, the plurality of second wall cooling channels are arranged at an angle through the second wall.

[0118] According to the dome structure described in the foregoing clause, the ratio of the area of ​​the first wall cooling channel (Ah1) to the area of ​​the second wall cooling channel (Ah2) is: Ah1 / Ah2 = one to two.

[0119] According to the dome structure described in the foregoing clause, the voltage drop (ΔP) across each integrated dome deflector unit has a range of 1.5% to 3.5%.

[0120] According to the dome structure described in the foregoing clause, the ratio of the cross-sectional area (A1) of each dome deflector unit to the cross-sectional area (A2) of the cavity has a range from two tenths to ninety-eight percent.

[0121] According to the dome structure described in the foregoing clause, the cooling efficiency factor (CE) of each dome deflector unit has a range from 0.3% to 7%, where CE = ΔP*A2 / A1 *(Ah1 / Ah2).

[0122] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector units are circumferentially arranged and installed between the inner frame unit and the outer frame unit around the central axis of the burner.

[0123] According to the dome structure described in the foregoing clause, the integrated dome deflector unit further includes a plurality of third walls connecting the first wall and the second wall, and each of the plurality of third walls is configured to engage with the third wall of another adjacent integrated dome deflector unit, thereby forming a seal between the respective adjacent integrated dome deflector units in the plurality of integrated dome deflector units.

[0124] According to the dome structure described in the foregoing clause, the plurality of integrated dome deflector units include a first type of integrated dome deflector unit and a second type of integrated dome deflector unit. Each integrated dome deflector unit of the first type includes a first and a third wall type, and each integrated dome deflector unit of the second type includes a second and a third wall type. The plurality of integrated dome deflector units are mounted to the mounting structure in a circumferentially alternating arrangement of the first type and the second type of integrated dome deflector units.

[0125] According to the dome structure described in the foregoing clause, the first third wall type is constructed to overlap with the second third wall type.

[0126] According to the dome structure described in the foregoing clause, the first wall is engaged with the mounting structure, and each integrated dome deflector unit is mounted to the mounting structure via at least a connection means.

[0127] According to the dome structure described in the foregoing clause, the first wall and the second wall are made of at least one of a metal alloy and a ceramic matrix composite material.

[0128] According to the dome structure described in the preceding clause, the second wall includes a thermal coating, which is disposed on the side of the second wall opposite to the cavity.

[0129] While the foregoing description is directed to some exemplary embodiments of the present disclosure, other changes and modifications will be apparent to those skilled in the art and can be made without departing from the spirit or scope of the present disclosure. Furthermore, features described in connection with one embodiment of the present disclosure may be used in conjunction with other embodiments, even if not explicitly stated above.

Claims

1. A combustor for a gas turbine, characterized in that, The burner includes: Burner bushing, comprising an inner bushing and an outer bushing, the inner bushing and the outer bushing extending circumferentially around the burner's centerline axis; and A dome structure, the dome structure comprising: (a) a metal frame structure extending circumferentially around the burner centerline axis, the metal frame structure being connected to the inner liner and the outer liner; and (b) A plurality of ceramic matrix composite integrated dome deflector components, said plurality of ceramic matrix composite integrated dome deflector components being mounted to the metal frame structure, each of said plurality of ceramic matrix composite integrated dome deflector components comprising a ceramic matrix composite dome wall, a ceramic matrix composite deflector wall, and a plurality of ceramic matrix composite sidewalls connecting the ceramic matrix composite dome wall and the ceramic matrix composite deflector wall to each other, the cavity being defined by the ceramic matrix composite dome wall, the ceramic matrix composite deflector wall, and the plurality of ceramic matrix composite sidewalls. The plurality of ceramic matrix composite integrated dome deflector components include a first ceramic matrix composite integrated dome deflector component and a second ceramic matrix composite integrated dome deflector component arranged circumferentially adjacent to the first ceramic matrix composite integrated dome deflector component. Wherein, the plurality of ceramic matrix composite sidewalls of the first ceramic matrix composite integrated dome deflector component include a first sidewall structure, and the plurality of ceramic matrix composite sidewalls of the second ceramic matrix composite integrated dome deflector component include a second sidewall structure different from the first sidewall structure, and a joint is formed between the first sidewall structure and the second sidewall structure, such that at least a portion of the first sidewall structure and a portion of the second sidewall structure overlap each other circumferentially.

2. The burner according to claim 1, characterized in that, in, The cavity is provided with at least one layer of buffer material, which includes any one of a honeycomb layer, a grid layer, and a sponge layer.

3. The burner according to claim 1, characterized in that, in, The metal frame structure includes an inner metal frame member extending circumferentially around the burner centerline axis and connected to the inner bushing, and an outer metal frame member extending circumferentially around the burner centerline axis and connected to the outer bushing, wherein the outer metal frame member is arranged radially outside the inner metal frame member.

4. The burner according to claim 3, characterized in that, in, The metal frame structure further includes a plurality of rib members, which are circumferentially spaced around the burner centerline axis and connect the inner metal frame member and the outer metal frame member. The corresponding ceramic matrix composite integrated dome deflector members of the plurality of ceramic matrix composite integrated dome deflector members are arranged between consecutive pairs of the plurality of rib members.

5. The burner according to claim 1, characterized in that, in, Each ceramic matrix composite integrated dome deflector component includes a cyclone assembly opening that extends through the ceramic matrix composite dome wall and through the ceramic matrix composite deflector wall, and the burner further includes a cyclone assembly mounted within the burner and extending through the cyclone assembly opening.

6. The burner according to claim 1, characterized in that, in, The ceramic matrix composite dome wall includes a plurality of dome wall cooling channels passing through it, the plurality of dome wall cooling channels being arranged to provide a flow of cooling air passing through it to the cavity.

7. The burner according to claim 6, characterized in that, in, The ceramic matrix composite deflector wall includes a plurality of deflector wall cooling channels passing through it, the plurality of deflector wall cooling channels being arranged to provide cooling airflow passing through it from the cavity to the combustion chamber side of the ceramic matrix composite deflector wall.

8. The burner according to claim 7, characterized in that, in, The plurality of deflector wall cooling channels are arranged at a certain angle through the ceramic matrix composite deflector wall.

9. The burner according to claim 7, characterized in that, in, The ratio of the area Ah1 of the cooling channel in the dome wall to the area Ah2 of the cooling channel in the deflector wall, Ah1 / Ah2, is in the range of one to two.

10. The burner according to claim 9, characterized in that, in, The ratio A2 / A1 of the cross-sectional area A2 of the cavity to the cross-sectional area A1 of each ceramic matrix composite integrated dome deflector component ranges from two tenths to ninety-eight percent.

11. The burner according to claim 10, characterized in that, in, During the operation of the burner, which provides pressurized airflow to the burner, the ratios Ah1 / Ah2 and A2 / A1 provide a pressure drop ΔP across each ceramic matrix composite integrated dome deflector component, wherein ΔP has a range of 1.5% to 3.5%.

12. The burner according to claim 11, characterized in that, in, The cooling efficiency factor CE of each ceramic matrix composite integrated dome deflector component ranges from 0.3% to 7%, where CE = ΔP*A2 / A1 * (Ah1 / Ah2).

13. The burner according to claim 3, characterized in that, in, The plurality of ceramic matrix composite integrated dome deflector components are arranged circumferentially around the burner centerline axis and installed between the inner metal frame component and the outer metal frame component.

14. The burner according to claim 1, characterized in that, in, A seal is provided between the first sidewall structure of the first ceramic matrix composite integrated dome deflector component and the second sidewall structure of the second ceramic matrix composite integrated dome deflector component.

15. The burner according to claim 1, characterized in that, in, The first sidewall structure includes any one of a first slot structure, a tenon structure, or a concave wall structure, and the second sidewall structure includes any one of a second slot structure, a groove structure, or a convex wall structure.

16. The burner according to claim 3, characterized in that, in, At least one of the plurality of ceramic matrix composite integrated dome deflector components is bolted to one of the inner metal frame component or the outer metal frame component and is mounted to the other of the inner metal frame component or the outer metal frame component via an L-shaped flange extending from the upstream side of the ceramic matrix composite dome wall, the L-shaped flange forming a mortise and tenon joint with the inner metal frame component.

17. The burner according to claim 1, characterized in that, in, The ceramic matrix composite dome wall is joined to the metal frame structure, and each ceramic matrix composite integrated dome deflector component is installed to the metal frame structure via at least one of bolt joints, tongue and groove joints or retaining clamp joints.

18. The burner according to claim 3, characterized in that, in, The ceramic matrix composite dome wall includes a first L-shaped flange located on the upstream side of the ceramic matrix composite dome wall and a second L-shaped flange located on the upstream side of the ceramic matrix composite dome wall. The first L-shaped flange defines a groove that engages with the inner metal frame member to connect the ceramic matrix composite dome wall to the inner metal frame member, and the second L-shaped flange connects the ceramic matrix composite dome wall to the outer metal frame member.

19. The burner according to claim 1, characterized in that, in, The ceramic matrix composite deflector wall includes a thermal coating, which is disposed on the side of the ceramic matrix composite deflector wall opposite to the cavity.

20. The burner according to claim 1, characterized in that, in, At least one of the plurality of ceramic matrix composite integrated dome deflector components includes at least one of a ceramic matrix composite outer wall and a ceramic matrix composite inner wall, the ceramic matrix composite outer wall and the ceramic matrix composite inner wall extending circumferentially between the plurality of ceramic matrix composite sidewalls and extending longitudinally between the ceramic matrix composite dome wall and the ceramic matrix composite deflector wall, the at least one of the plurality of ceramic matrix composite integrated dome deflector components defining a hollow box structure.

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