Toroidal radially reliable joint structure and combustor

Abstract

The present application relates to the technical field of aero-engine combustion chamber, and provides a circumferential radial reliable flame-joining structure and a combustor, the circumferential radial reliable flame-joining structure comprising an annular support plate, a plurality of radial support plates and a precombustion chamber outer wall extension plate, the annular support plate being arranged at intervals between the inner ring wall of the inner ring combustion chamber and the inner ring wall of the precombustion chamber, and a plurality of first fuel nozzles for oblique-angle circumferential rotational flow injection being arranged on the end wall of the annular support plate; the plurality of radial support plates are arranged in a circumferential array in the circumferential direction of the annular support plate, and a plurality of second fuel nozzles are arranged on the outer wall surface of the radial support plates; the precombustion chamber outer wall extension plate is connected to the outer ring wall of the precombustion chamber, and a plurality of groups of air holes are arranged in a circumferential array on the precombustion chamber outer wall extension plate and are opened in a radial direction. The present application realizes more effective mixing of airflow and fuel, and can effectively ensure the mixing efficiency of fuel and air, the flame-joining effect in a large-scale space and stable combustion.

Description

Technical Field

[0001] This invention relates to the field of aero-engine combustion chamber technology, and in particular to a reliable circumferential radial flame connection structure and burner. Background Technology

[0002] The high-flow dual-cycle engine adopts a dual-cycle overall scheme. By switching between the core engine duct and multiple ducts, it can achieve both turbofan and turbojet operating modes, taking into account the economy of low-speed subcruise, the economy and acceleration of medium-speed supersonic flight, and the demand for continuous high thrust at high speeds.

[0003] The dual-variable combustion chamber is located downstream of the core fan and intermediate-pressure turbine and upstream of the adjustable guide vanes of the low-pressure turbine. It needs to correspond to the upstream core turbine bypass, the first bypass, and the second bypass. The space size is very large and the incoming flow parameters are complex. It is crucial to ensure reliable flame connection and stable combustion in the combustion chamber within a large circumferential and radial space.

[0004] The part of the dual-circuit combustion chamber corresponding to the core engine bypass is called the inner ring combustion chamber, and the part corresponding to the first bypass is called the outer ring combustion chamber. A pre-combustion chamber is set between the two to ensure smooth ignition and shutdown of the entire engine.

[0005] The dual-variable combustion chamber operates in two distinct modes: turbofan mode, which draws in two distinct airflows from the core bypass duct and the first bypass duct; and turbojet mode, which draws in air from the second bypass duct. Under different modes and operating conditions, the inlet airflow parameters are complex and variable, and the characteristics of the airflow differ significantly. Conventional combined-flame combustion design methods are not fully applicable to the complex operating conditions of the dual-variable combustion chamber. Furthermore, when switching from turbofan to turbojet mode, to prevent the pressure in the first bypass duct from being higher than that in the second bypass duct, which could cause airflow to enter the second bypass duct and affect the rear fan, the inner bypass duct and first bypass duct selection valves must be closed first, and then the second bypass duct selection valve must be activated. The dual-variable combustion chamber shuts down during the closure of the inner bypass duct and first bypass duct selection valves, and then starts up during the opening of the second bypass duct selection valve. The transition from turbojet to turbofan mode is the reverse process, and the duration is shorter. Therefore, in the dual-variable combustion chamber, under the realistic conditions of complex airflow parameters, short start-up and shutdown times, and a large combustion space, achieving stable combined-flame combustion becomes crucial and extremely challenging. Summary of the Invention

[0006] This invention provides a reliable circumferential and radial flame connection structure and burner to solve the technical defects of poor stable flame connection capability in existing dual-variable combustion chambers. It achieves more effective mixing of incoming air and fuel, and can effectively ensure the mixing efficiency of fuel and air, the flame connection effect in a large space, and stable combustion.

[0007] This invention provides a reliable circumferential and radial flame connection structure, comprising:

[0008] An annular support plate is spaced between the inner annular wall of the inner annular combustion chamber and the inner annular wall of the pre-combustion chamber. Multiple first fuel nozzles with oblique angle circumferential swirling injection are arranged on the end wall of the annular support plate.

[0009] Multiple radial support plates are arranged in a circumferential array around the annular support plate and connected to the annular support plate. The two ends of the radial support plates extend toward the inner wall of the inner annular combustion chamber and the inner wall of the pre-combustion chamber, respectively. Multiple second fuel nozzles are arranged on the outer wall of the radial support plates.

[0010] The pre-combustion chamber outer wall extension plate is connected to the outer ring wall of the pre-combustion chamber. The pre-combustion chamber outer wall extension plate has multiple sets of vent holes arranged in a circumferential array, and the multiple sets of vent holes are opened radially.

[0011] According to the present invention, a circumferential radial reliable flame connection structure is provided, wherein the annular support plate has a first end face that is away from the combustion chamber air inlet, the first fuel nozzle is disposed on the first end face, and the first fuel nozzle is arranged at an angle to the axial direction of the circumferential radial reliable flame connection structure.

[0012] According to the present invention, a reliable circumferential radial flame connection structure is provided, wherein the first fuel nozzle is arranged in a left-handed or right-handed spiral configuration.

[0013] According to a reliable circumferential and radially connected flame structure provided by the present invention, the annular support plate is provided with a first fuel flow channel, which is connected to a plurality of first fuel nozzles, and the radial support plate is provided with a second fuel flow channel, which is connected to a plurality of second fuel nozzles, and the first fuel flow channel is connected to the second fuel flow channel.

[0014] According to the present invention, in a circumferential radially reliable flame connection structure, at least one set of the vent holes is located on the same plane as the first fuel nozzle.

[0015] According to a reliable circumferential and radially connected flame structure provided by the present invention, the pre-combustion chamber includes an arc-shaped pre-combustion chamber section, an inclined pre-combustion chamber section, and a transition connection section. The arc-shaped pre-combustion chamber section is arranged in a reverse arc shape away from the combustion chamber air inlet. The inclined pre-combustion chamber section and the transition connection section are respectively connected to the two ends of the arc-shaped pre-combustion chamber section. The transition connection section is connected between the arc-shaped pre-combustion chamber section and the outer wall extension plate of the pre-combustion chamber. One end of the inclined pre-combustion chamber section is connected to the arc-shaped pre-combustion chamber section, and the other end is inclined away from the axis. The radial support plate abuts against the inclined pre-combustion chamber section.

[0016] According to a reliable circumferential and radial flame connection structure provided by the present invention, a first set of vent holes is provided on the outer wall extension plate of the pre-combustion chamber, and a second set of vent holes is provided on the transition connection section of the pre-combustion chamber. The first set of vent holes and the first fuel nozzle are located on the same plane, and the second set of vent holes is located close to the arc-shaped section of the pre-combustion chamber. The total area of ​​the through holes of the first set of vent holes is smaller than the total area of ​​the through holes of the second set of vent holes.

[0017] According to a reliable circumferential and radial flame connection structure provided by the present invention, a third set of vent holes is symmetrically arranged on the arc-shaped section of the pre-combustion chamber.

[0018] According to a reliable circumferential and radial flame connection structure provided by the present invention, the arc-shaped section of the pre-combustion chamber is provided with a pre-combustion chamber air guide baffle. The pre-combustion chamber air guide baffle is located on the side of the arc-shaped section of the pre-combustion chamber away from the air inlet end of the pre-combustion chamber. The pre-combustion chamber air guide baffle extends toward the transition connection section of the pre-combustion chamber. The pre-combustion chamber air guide baffle is correspondingly provided with the third set of vent holes. The third set of vent holes is located inside the pre-combustion chamber air guide baffle.

[0019] This invention also proposes a burner comprising the aforementioned circumferential and radially reliable flame connection structure, which includes an annular support plate, multiple radial support plates, and an extension plate extending from the outer wall of the pre-combustion chamber. The annular support plate is spaced between the inner wall of the inner annular combustion chamber and the inner wall of the pre-combustion chamber. Multiple first fuel nozzles with oblique circumferential swirling injection are evenly distributed on the end walls of the annular support plate. Multiple radial support plates are arranged in a circumferential array along the circumference of the annular support plate and connected to it. The radial ends of each radial support plate extend towards the inner wall of the inner annular combustion chamber and the inner wall of the pre-combustion chamber, respectively. Multiple second fuel nozzles are evenly distributed on the outer wall of the radial support plate. The extension plate extending from the outer wall of the pre-combustion chamber is connected to the outer wall of the pre-combustion chamber. Multiple sets of vent holes are arranged in a circumferential array on the extension plate, and these vent holes are radially arranged.

[0020] This invention provides a reliable circumferential and radial flame linkage structure. Multiple first fuel nozzles and second fuel nozzles are respectively designed on the radial support plate and the annular support plate. The outer wall extension section is designed with multiple sets of vent holes for introducing radially flowing air. The first fuel nozzles are designed with oblique circumferential injection, which greatly enhances the uniformity of fuel and air distribution. Simultaneously, the fuel injected by the first fuel nozzles flows in a swirling state, which not only improves the mixing degree of fuel and air but also strengthens the circumferential flame linkage effect, making combustion more stable. The vent holes on the outer wall extension plate of the pre-combustion chamber are radially opened. Because the radial support plate has a certain turbulence effect on the axially flowing air, the air introduced into the outer annular wall of the pre-combustion chamber can flow relatively smoothly radially inward under the turbulence effect, allowing the flame in the pre-combustion chamber to quickly and smoothly achieve flame linkage from the outside to the inside. At the same time, under the influence of the circumferential injection of the annular support plate, the flame linkage in the combustion chamber can be achieved more rapidly and smoothly. This allows for more efficient mixing of incoming air and fuel, effectively ensuring fuel-air mixing efficiency, flame-coupling effect in large spaces, and stable combustion. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the axial structure of the circumferential and radially reliable flame-connecting structure provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the lateral structure of the reliable circumferential and radial flame-connected structure provided by the present invention;

[0024] Figure 3 This is a radial cross-sectional view of the circumferential and radially reliable flame-connected structure provided by the present invention;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0026] Figure label:

[0027] 100. Reliable circumferential and radial flame connection structure;

[0028] 110. Annular support plate; 111. First fuel nozzle; 112. First fuel flow channel;

[0029] 120. Radial support plate; 121. Second fuel nozzle; 122. Second fuel flow channel;

[0030] 130. Pre-fired exterior wall extension panel; 131. First set of vents;

[0031] 200. Pre-combustion chamber; 210. Arc-shaped section of pre-combustion chamber; 211. Third set of vents; 220. Inclined section of pre-combustion chamber; 230. Transition connection section of pre-combustion chamber; 231. Second set of vents; 240. Air guide baffle of pre-combustion chamber;

[0032] 300. Inner ring wall of the inner ring combustion chamber. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0036] This invention proposes a reliable circumferential and radially coupled flame structure and burner.

[0037] In embodiments of the present invention, such as Figures 1 to 4As shown, the circumferential and radially reliable flame connection structure 100 includes an annular support plate 110, multiple radial support plates 120, and a pre-combustion chamber outer wall extension plate 130. The annular support plate 110 is spaced between the inner annular wall 300 of the inner annular combustion chamber and the inner annular wall of the pre-combustion chamber 200. Multiple first fuel nozzles 111 with oblique angle circumferential swirling injection are arranged on the end wall of the annular support plate 110. Multiple radial support plates 120 are arranged in a circumferential array in the circumferential direction of the annular support plate 110 and connected to the annular support plate 110. The two ends of the radial support plates 120 extend toward the inner annular wall 300 of the inner annular combustion chamber and the inner annular wall 200 of the pre-combustion chamber, respectively. Multiple second fuel nozzles 121 are arranged on the outer wall of the radial support plate 120. The pre-combustion chamber outer wall extension plate 130 is connected to the outer annular wall of the pre-combustion chamber 200. Multiple sets of vent holes are arranged in a circumferential array on the pre-combustion chamber outer wall extension plate 130, and the multiple sets of vent holes are opened radially.

[0038] Specifically, in this embodiment of the invention, the circumferentially radially reliable flame-connecting structure 100 includes an annular support plate 110, multiple radial support plates 120, and an extension plate 130 on the outer wall of the pre-combustion chamber. The annular support plate 110 is disposed between the inner annular wall 300 of the inner annular combustion chamber and the inner annular wall of the pre-combustion chamber 200, forming a channel for gas flow. Multiple first fuel nozzles 111 with oblique circumferential swirling injection are uniformly arranged on the end wall of the annular support plate 110. The first fuel nozzles 111 generate swirling flow, which helps mix fuel and air, improving combustion efficiency. Optionally, the combustion effect can be optimized by adjusting the angle, number, and position of the nozzles, and nozzles of different shapes can be designed according to actual needs. Multiple radial support plates 120 are arranged in a circumferential array around the annular support plate 110 and connected to it. Second fuel nozzles 121 are uniformly arranged on the outer wall of the radial support plate 120. The second fuel nozzles 121 can inject atomized fuel gas axially and circumferentially, thereby further mixing fuel and air and promoting complete combustion. Optionally, the mixing effect of fuel and air can be further improved and the combustion efficiency increased by adjusting the number and shape of the radial support plates 120 and the number and shape of the second fuel nozzles 121. The pre-combustion chamber outer wall extension plate 130 is connected to the outer ring wall of the pre-combustion chamber 200. The function of the pre-combustion chamber outer wall extension plate 130 is to radially induced air, enhance the mixing and combustion effect during the combustion process, and thus strengthen the radial flame connection effect. Optionally, the gas flow path can be further optimized and the combustion efficiency improved by changing the length, shape, and angle of the pre-combustion chamber outer wall extension plate 130. The circumferential radial reliable flame connection structure 100 of this application adopts the design of annular support plate 110, radial support plate 120, and pre-combustion chamber outer wall extension plate 130. The combination of circumferential injection and radial induced air by the annular support plate 110 makes the fuel-air mixing effect in the double variable inner ring combustion chamber stronger, the distribution more uniform, and the circumferential and radial flame connection more stable and reliable.

[0039] This invention provides a reliable circumferential and radially coupled flame structure 100, which features multiple first fuel nozzles 111 and second fuel nozzles 121 on a radial support plate 120 and an annular support plate 110, respectively. The outer wall extension section is designed with multiple sets of vent holes for introducing radially flowing air. The first fuel nozzles 111 are designed for oblique circumferential injection, significantly enhancing the uniformity of fuel and air distribution. Simultaneously, the fuel injected by the first fuel nozzles 111 flows in a swirling state, improving the mixing degree of fuel and air and strengthening the circumferential coupled flame effect, resulting in more stable combustion. The vents of the pre-combustion chamber's outer wall extension plate 130 are radially oriented. Because the radial support plate 120 has a certain turbulent effect on the axially flowing air, the air introduced by the pre-combustion chamber's outer wall extension plate 130 can flow smoothly radially inward under the turbulent effect, allowing the flame in the pre-combustion chamber to quickly and smoothly achieve flame integration from the outside in. Simultaneously, under the influence of the circumferential injection of the annular support plate 110, flame integration within the combustion chamber can be achieved more rapidly and smoothly. This achieves more effective mixing of the incoming air and fuel, effectively ensuring fuel-air mixing efficiency, flame integration effect in a large space, and stable combustion.

[0040] Reference Figure 1 and Figure 2 In one embodiment, the annular support plate 110 has a first end face facing away from the combustion chamber air inlet, and a first fuel nozzle 111 is disposed on the first end face, with the first fuel nozzle 111 set at an angle to the axial direction of the circumferential radial reliable flame connection structure 100. It can be understood that by setting the first fuel nozzle 111 on the first end face of the annular support plate 110 at a certain angle to the axial direction, the first fuel nozzle 111 can be tilted and sprayed circumferentially, greatly enhancing the uniformity of fuel and air distribution. Simultaneously, the fuel ejected from the first fuel nozzle 111 flows in a swirling state, thus not only improving the mixing degree of fuel and air but also strengthening the circumferential flame connection effect, making combustion more stable.

[0041] Specifically, the angle and direction between the first fuel nozzle 111 and the axial direction depend on actual needs and design requirements. It can be optimized and adjusted based on factors such as different fuel types, pre-combustion chamber structures, and application scenarios.

[0042] Optionally, the first fuel nozzle 111 is arranged in a left-hand or right-hand spiral configuration. It is understood that by arranging the first fuel nozzle 111 in a spiral configuration in this embodiment, fuel can be injected into the pre-combustion chamber in a spiral form. This increases the mixing path between fuel and air, improving combustion efficiency. The spiral injection allows for better mixing of fuel and air, increasing the combustion surface area and promoting the combustion reaction. The spiral arrangement of the first fuel nozzle 111 can generate turbulence and vortex effects. Turbulence and vortexes allow for better mixing of fuel and air, accelerating the combustion process. This helps improve combustion stability and efficiency. The specific choice between left-hand and right-hand spiral depends on actual needs and design requirements. It can be optimized and adjusted based on factors such as the pre-combustion chamber structure, fuel characteristics, and application requirements.

[0043] Reference Figure 4 In one embodiment, the annular support plate 110 is provided with a first fuel flow channel 112, which communicates with a plurality of first fuel nozzles 111. The radial support plate 120 is provided with a second fuel flow channel 122, which communicates with a plurality of second fuel nozzles 121. The first fuel flow channel 112 and the second fuel flow channel 122 are connected. It is understood that in this embodiment, fuel is introduced into the annular support plate 110 and the radial support plate 120 through a fuel supply pipe. The annular support plate 110 and the radial support plate 120 are connected through the first fuel flow channel 112 and the second fuel flow channel 122, ensuring that the fuel has the same overall pressure and a substantially similar degree of atomization during injection.

[0044] Reference Figure 3 and Figure 4 In one embodiment, at least one set of vent holes is located on the same plane as the first fuel nozzle 111. In this embodiment, by setting at least one set of vent holes on the outer wall extension section at the rear end of the radial support plate 120, the radial support plate 120 has a certain turbulence effect on the axially flowing air. The air introduced by the outer wall extension plate 130 of the pre-combustion chamber can flow more smoothly radially inward under the effect of turbulence, so that the flame in the pre-combustion chamber can quickly and smoothly connect from the outside to the inside. At the same time, under the influence of the circumferential injection of the annular support plate 110 and the first fuel nozzle 111, the flame in the combustion chamber can connect more quickly and smoothly.

[0045] Reference Figure 4In one embodiment, the pre-combustion chamber 200 includes an arc-shaped section 210, an inclined section 220, and a transition section 230. The arc-shaped section 210 is arranged in a reverse arc shape away from the combustion chamber inlet. The inclined section 220 and the transition section 230 are respectively connected to the two ends of the arc-shaped section 210. The transition section 230 connects the arc-shaped section 210 and the outer wall extension plate 130 of the pre-combustion chamber. One end of the inclined section 220 is connected to the arc-shaped section 210, and the other end is inclined away from the axis. The radial support plate 120 abuts against the inclined section 220. It can be understood that by setting the arc-shaped section 210, the inclined section 220, and the transition section 230, vortices can be generated in the fluid within the pre-combustion chamber 200, and the direction of the fluid can be effectively controlled. Furthermore, guided by the arc-shaped section 210 and the inclined section 220 of the pre-combustion chamber, the fluid can mix better with the fuel, ensuring complete combustion. This embodiment utilizes the design of the pre-combustion chamber 200, consisting of the arc-shaped section 210, the inclined section 220, and the transition section 230, to achieve flow control, improve combustion efficiency and stability, thereby optimizing the performance of the circumferentially and radially reliable combined flame structure 100.

[0046] Reference Figure 4 In one embodiment, the pre-combustion chamber outer wall extension plate 130 is provided with a first set of vent holes 131, and the pre-combustion chamber transition connection section 230 is provided with a second set of vent holes 231. The first set of vent holes 131 is located on the same plane as the first fuel nozzle 111, and the second set of vent holes 231 is located close to the arc-shaped section 210 of the pre-combustion chamber. The total area of ​​the through holes of the first set of vent holes 131 is smaller than the total area of ​​the through holes of the second set of vent holes 231. In this embodiment, the arrangement of the first set of vent holes 131 allows the fuel to be mixed more evenly in the air, thereby improving combustion efficiency. In addition, the arrangement of the second set of vent holes 231 optimizes the flow state of the fluid in the pre-combustion chamber transition connection section 230, further improving combustion efficiency. The arrangement of the first set of vent holes 131 and the second set of vent holes 231 allows control of the direction of the fluid in the pre-combustion chamber, enabling it to mix better with the fuel and flow smoothly. Thus, by providing a first set of vent holes 131 and a second set of vent holes 231 on the pre-combustion chamber transition connection section 230, combustion efficiency is improved, fluid velocity and direction are controlled, and the stability of the circumferential radial reliable flame connection structure 100 is further improved.

[0047] Reference Figure 4In one embodiment, a third set of vent holes 211 are symmetrically arranged on the arc-shaped section 210 of the pre-combustion chamber. This embodiment enhances the airflow and guides the airflow by providing multiple sets of third sets of vent holes 211 on the arc-shaped section 210 of the pre-combustion chamber, allowing the fluid to flow more smoothly through the arc-shaped section 210 of the pre-combustion chamber, and further optimizes the performance of the circumferential and radially reliable flame connection structure 100.

[0048] Reference Figure 4 In one embodiment, the arc-shaped section 210 of the pre-combustion chamber is provided with a pre-combustion chamber air guide baffle 134. The pre-combustion chamber air guide baffle 134 is located on the arc-shaped section 210 of the pre-combustion chamber away from the combustion chamber air inlet and extends towards the pre-combustion chamber transition connection section 230. The pre-combustion chamber air guide baffle 134 is correspondingly arranged with a third set of vent holes 211, which are located on the inner side of the pre-combustion chamber air guide baffle 134. In this embodiment, the air guide baffle 134 guides the airflow through the third set of vent holes 211, thereby better limiting the direction of airflow, enhancing the mixing effect of fuel and air, and further improving combustion efficiency. It should be noted that the position, angle, and shape of the pre-combustion chamber air guide baffle 134 can be reasonably designed as needed to maximize its function.

[0049] The present invention also proposes a burner including a circumferential and radially reliable flame connection structure 100. The specific structure of the circumferential and radially reliable flame connection structure 100 is as described in the above embodiments. Since the burner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0050] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circumferentially radially reliable flame structure, characterized by, The application relates to a circumferential radial reliable joint combustion structure. The circumferential radial reliable joint combustion structure comprises: a ring-shaped supporting plate which is arranged between the inner ring wall of an inner ring combustion chamber and the inner ring wall of a precombustion chamber, and is provided with a plurality of first fuel injection nozzles of inclined angle circumferential rotational flow on the end wall of the ring-shaped supporting plate; a plurality of radial supporting plates which are arranged in the circumferential direction of the ring-shaped supporting plate and are connected with the ring-shaped supporting plate, and are respectively extended towards the inner ring wall of the inner ring combustion chamber and the inner wall of the precombustion chamber along the two ends in the radial direction, and are provided with a plurality of second fuel injection nozzles on the outer wall surface; and a precombustion chamber outer wall extension plate which is connected with the outer ring wall of the precombustion chamber, and is provided with a first group of air holes which are arranged in an array in the circumferential direction and are located in the same plane as the first fuel injection nozzles and are opened in the radial direction. The ring-shaped supporting plate is provided with a first end surface which faces away from the air inlet of the combustion chamber, and the first fuel injection nozzles are arranged on the first end surface and are arranged at an angle with the axis direction of the circumferential radial reliable joint combustion structure. The first fuel injection nozzles are arranged in a left-handed or right-handed helical arrangement.

2. The circumferentially radially reliable flame structure of claim 1, wherein, The ring-shaped supporting plate is provided with a first fuel flow channel which communicates with the plurality of first fuel injection nozzles, and the radial supporting plates are provided with a second fuel flow channel which communicates with the plurality of second fuel injection nozzles, and the first fuel flow channel communicates with the second fuel flow channel.

3. The circumferentially radially reliable flame structure of claim 2, wherein, The precombustion chamber comprises a precombustion chamber arc-shaped section, a precombustion chamber inclined section and a precombustion chamber transition connecting section, the precombustion chamber arc-shaped section is arranged in an inverse arc shape which faces away from the air inlet of the combustion chamber, the precombustion chamber inclined section and the precombustion chamber transition connecting section are respectively connected with the two ends of the precombustion chamber arc-shaped section, the precombustion chamber transition connecting section is connected between the precombustion chamber arc-shaped section and the precombustion chamber outer wall extension plate, one end of the precombustion chamber inclined section is connected with the precombustion chamber arc-shaped section, and the other end is arranged in an inclined manner which is away from the axis direction, and the radial supporting plates abut against the precombustion chamber inclined section.

4. The circumferentially radially reliable flame structure of claim 1, wherein, The precombustion chamber transition connecting section is provided with a second group of air holes which are arranged close to the precombustion chamber arc-shaped section, and the total area of the through holes of the first group of air holes is smaller than the total area of the through holes of the second group of air holes.

5. The circumferentially radially reliable flame structure of any of claims 1-4, wherein, The precombustion chamber arc-shaped section is provided with a third group of air holes which are arranged symmetrically.

6. The circumferentially radially reliable flame structure of claim 5, wherein, The precombustion chamber arc-shaped section is provided with a precombustion chamber air guide baffle which is arranged on the side of the precombustion chamber arc-shaped section which faces away from the air inlet of the precombustion chamber, and is extended towards the precombustion chamber transition connecting section, the precombustion chamber air guide baffle is arranged correspondingly with the third group of air holes which are located on the inner side of the precombustion chamber air guide baffle.

7. The circumferentially radially reliable flame structure of claim 5, wherein, The circumferential radial reliable joint combustion structure comprises any one of claims 1 to 8.

8. The circumferentially radially reliable flame structure of claim 7, wherein, ​ 9. A burner characterized by, ​

Images