Integrated assembly of air-entraining cooling inner cone and support plate diffusion oil injection stabilizer

Abstract

The invention relates to the technical field of aviation, and provides an air-entraining cooling integrated assembly of an inner cone and a supporting plate diffusion oil injection stabilizer, the air-entraining cooling integrated assembly is applied to an afterburner and comprises a diffuser, a supporting plate and an inner cone which are arranged in the afterburner, the diffuser is arranged on the top face of the supporting plate, and a first flow channel is formed by the diffuser and the top face of the afterburner; the inner cone is arranged on the bottom surface of the support plate and forms a second flow channel with the bottom surface of the diffuser; the first flow channel and the second flow channel are respectively communicated with an inlet of the afterburner; and the diffuser, the support plate and the inner cone are integrally formed parts. According to the afterburner, the compactness and strength of the structure are improved, the interference and airflow separation phenomena among all parts are reduced, the flow loss in the afterburner is reduced, and therefore the performance and reliability of the whole engine are improved.

Description

Technical Field

[0001] The invention relates to the field of aviation technology, and in particular to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling. Background Art

[0002] Jet aircraft engines are an important part of modern aircraft power systems, and their afterburners play a key role in providing additional thrust. Existing jet aircraft engine afterburners generally adopt a technical solution in which components such as flame stabilizers, diffusers, and fuel injection rods act separately. However, the dispersed placement of these components leads to an increase in airflow loss in the afterburner, thus affecting the overall performance and efficiency of the engine. Summary of the invention

[0003] The invention provides an integrated assembly of an inner cone body and a support plate diffuser injection stabilizer for bleed air cooling, which is used to solve the problem of airflow loss in an afterburner combustion chamber in the prior art, which affects the overall performance and efficiency of the engine.

[0004] The present invention provides an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling, which is applied to an afterburner combustion chamber and comprises: a diffuser, a support plate and an inner cone arranged in the afterburner combustion chamber, wherein the diffuser is arranged on the top surface of the support plate and forms a first flow channel with the top surface of the afterburner combustion chamber; the inner cone is arranged on the bottom surface of the support plate and forms a second flow channel with the bottom surface of the diffuser; the first flow channel and the second flow channel are respectively connected to the inlet of the afterburner combustion chamber; the diffuser, the support plate and the inner cone are an integrally formed part.

[0005] According to the present invention, an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling is provided, wherein a cooling channel is provided in the support plate, a cooling port is provided in the inner cone, and an air outlet is provided in the support plate. The cooling port and the air outlet are respectively connected to the cooling channel, and the cooling port is used to connect to the outlet of the cooling device.

[0006] According to the integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, the diffuser is provided with an oil inlet, the side wall of the support plate is provided with an oil injection port, and the oil inlet is connected to the oil injection port.

[0007] According to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, a first groove is provided on the side wall of the support plate, the first groove is extended along the height direction of the support plate, the axis of the first groove is perpendicular to the axis of the afterburner inlet, and the injection port is provided on the side wall of the first groove.

[0008] According to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, a second groove is provided on the top surface of the inner cone, and the first groove is connected to the second groove.

[0009] According to the present invention, an integrated assembly of an inner cone and a support plate diffuser injection stabilizer with bleed air cooling also includes a mixer, a first side of which is connected to the diffuser and is located on a side of the diffuser away from the afterburner inlet; and / or the mixer and the diffuser are an integrally formed part.

[0010] According to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, the mixer is arranged to be tilted downward along a first side of the mixer toward a second side of the mixer.

[0011] According to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, a first drainage channel is provided on the top surface of the mixer, and at least two second drainage channels are provided on the bottom surface of the mixer, and the first drainage channel is located between two adjacent second drainage channels; the first drainage channel and the second drainage channel are both extended along the extension direction of the mixer.

[0012] According to the present invention, an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling is provided, wherein the inner cone includes a first guide portion and a second guide portion, the first guide portion being used to connect to the side wall of the afterburner, one end of the second guide portion being connected to the first guide portion, and the other end of the second guide portion being connected to the bottom inner wall surface of the afterburner.

[0013] According to an integrated assembly of an inner cone and a support plate diffuser injection stabilizer for bleed air cooling provided by the present invention, the second flow guide portion is an arc-shaped structure.

[0014] The integrated assembly of the bleed air cooled inner cone and the support plate diffuser injection stabilizer provided by the present invention, by arranging the diffuser, support plate and inner cone as an integrally formed part, not only improves the compactness and strength of the structure, but also reduces interference and airflow separation between the components, reduces flow losses in the afterburner combustion chamber, and thus improves the performance and reliability of the overall engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is one of the structural schematic diagrams of the integrated assembly of the inner cone and support plate expansion injection stabilizer for bleed air cooling provided by the present invention; Figure 2 This is the second structural schematic diagram of the integrated assembly of the inner cone and support plate expansion injection stabilizer for bleed air cooling provided by the present invention; Figure 3 It is one of the structural schematic diagrams of the integrated assembly of the inner cone and the support plate expansion injection stabilizer for bleed air cooling provided by the present invention installed in the afterburner combustion chamber; Figure 4 The second structural diagram of the integrated assembly of the inner cone and support plate diffuser fuel injection stabilizer for bleed air cooling installed in the afterburner combustion chamber; Reference numerals: 10. Afterburner chamber; 11. Inlet of afterburner chamber; 20. The integrated assembly of the inner cone and support plate diffuser for bleed air cooling and the fuel injection stabilizer; 21. Diffuser; 211. Oil inlet; 22. Support plate; 221. Oil injection port; 222. First groove; 23. Inner cone; 231. Cooling port; 232. Second groove; 233. First drainage portion; 234. Second drainage portion; 24. Mixer; 241. First drainage channel; 242. Second drainage channel; 30. Oil pipe. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0019] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the examples of various specific processes and materials provided by the present invention, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0023] Combine the following Figure 1-Figure 4 The integrated assembly 20 of the bleed air cooled inner cone and strut diffuser fuel injection stabilizer of the present invention is described.

[0024] The integrated assembly 20 of the inner cone and support plate diffuser injection stabilizer for bleed air cooling provided in the embodiment of the present invention is installed in the afterburner 10, such as Figure 3 and Figure 4 The integrated assembly 20 of the bleed air cooled inner cone and support plate diffuser injection stabilizer comprises a diffuser 21, a support plate 22 and an inner cone 23. The diffuser 21, the support plate 22 and the inner cone 23 are all arranged in the afterburner 10. Figure 1 and Figure 2As shown, the diffuser 21 is arranged on the top surface of the support plate 22, and the extension direction of the diffuser 21 is consistent with the flow direction of the airflow in the afterburner 10, and forms a first flow channel with the top surface of the afterburner 10. The diffuser 21 decelerates the high-speed intake airflow and increases the pressure of the airflow, thereby providing suitable airflow conditions for the subsequent combustion process. In one embodiment, the diffuser 21 includes a first diffuser plate, a second diffuser plate and a third diffuser plate, and the first diffuser plate, the second diffuser plate and the third diffuser plate are connected in sequence. The first diffuser plate is connected to the inner wall of the afterburner 10 and is located at the inlet of the afterburner 10. The bottom surface of the third diffuser plate is connected to the top surface of the support plate 22. The second diffuser plate is arranged to be tilted upward along the direction from the first diffuser plate to the third diffuser plate, thereby achieving deceleration of the intake airflow. The inner cone 23 is arranged on the bottom surface of the support plate 22, and the extension direction of the inner cone 23 is consistent with the flow direction of the airflow in the afterburner 10, and forms a second flow channel with the bottom surface of the diffuser 21. It should be noted that the width of the diffuser 21 is greater than the width of the support plate 22, and the width of the inner cone 23 is greater than the width of the support plate 22, that is, the airflow in the second flow channel can flow through both sides of the width direction of the support plate 22. The first flow channel and the second flow channel are respectively connected to the inlet 11 of the afterburner, so that the airflow can be effectively distributed to the two flow channels.

[0025] The airflow is divided into two parts through the inlet 11 of the afterburner: one part of the airflow enters the first flow channel, and after being decelerated and pressurized by the diffuser 21, provides high-pressure airflow for the combustion chamber; the other part of the airflow enters the second flow channel and is guided into the combustion chamber by the inner cone 23. The inner cone 23 helps to enhance the mixing of air and fuel, thereby improving combustion efficiency.

[0026] Furthermore, the diffuser 21, the support plate 22 and the inner cone 23 in the embodiment of the present invention are integrally formed. Compared with the prior art in which the diffuser 21, the support plate 22 and the inner cone 23 are separately provided, not only the compactness and strength of the structure are improved, but also the interference between the components and the airflow separation phenomenon are reduced, and the flow loss in the afterburner 10 is reduced, thereby improving the performance and reliability of the overall engine.

[0027] In the embodiment of the present invention, a cooling channel is provided in the support plate 22, and a cooling port 231 is provided on the inner cone 23. The cooling port 231 is connected to the inlet of the cooling channel to ensure that the cooling gas can smoothly enter the cooling channel. An air outlet is provided on the support plate 22, and the air outlet is connected to the outlet of the cooling channel to form a complete cooling circuit. Among them, the cooling port 231 is used to be connected to the outlet of a cooling device, such as a nuclear power fan. The cooling gas is introduced by the nuclear power fan, and the cooling gas enters the cooling channel through the cooling port 231 to cool the support plate 22. After flowing through the cooling channel, the cooling gas is ejected from the air outlet, which not only achieves the purpose of cooling the support plate 22, but also increases the oxygen content around the support plate 22, which helps to improve the combustion effect.

[0028] Furthermore, there are multiple cooling openings 231, such as Figure 2 As shown, the number of cooling ports 231 is 2, and may also be 3, 6, etc. The number of cooling channels is less than or equal to the number of cooling ports 231, and each cooling channel is connected to at least one cooling port 231. The number of air outlets is also multiple, and each cooling channel is connected to an air outlet. The cooling gas can enter the cooling channel through the multiple cooling ports 231 for cooling, thereby improving the cooling effect, and at the same time, the oxygen content around the support plate 22 can be increased and made more uniform.

[0029] The injection of cooling gas helps to match the fuel concentration and increase the oxygen content around the fuel jet, thereby solving the oil-gas matching problem of aviation kerosene combustion in this low-oxygen and high-temperature environment. The cooling gas in the embodiment of the present invention not only improves the cooling effect, but also improves the penetration of the fuel jet. This structure enables the fuel to burn in a more optimal oxygen environment, improves the combustion efficiency, reduces the emission of unburned hydrocarbons and nitrogen oxides, and further improves the performance and environmental friendliness of the engine. In addition, the present invention can ensure that the support plate 22 and other high-temperature components are effectively cooled under extreme working conditions by precisely controlling the flow rate and temperature of the cooling gas, thereby extending the service life of the engine and improving the overall reliability and safety of the engine.

[0030] In the prior art, the outer duct airflow is usually used to cool the components in the hot core flow. However, under the condition of high flow rate of the hot core flow, the pressure of the outer duct airflow is less than that of the inner duct, so this cooling method cannot be used. The present invention adopts the core fan duct air cooling mode, which can meet the needs of any pressure difference between the inner and outer ducts and is suitable for the cooling needs of different working conditions.

[0031] The diffuser 21 in the embodiment of the present invention is provided with an oil inlet 211, and an oil injection port 221 is provided on the side wall of the support plate 22. The oil inlet 211 is connected to the oil supply device through an oil pipe 30. The oil pipe 30 is inserted into the oil inlet 211 and communicates with the oil injection port 221. Under the action of the oil supply pressure, the fuel is sprayed toward the combustion chamber through the oil injection port 221, and is rapidly atomized and burned under the action of the airflow in the afterburner 10. It should be noted that an oil passage through which the oil supply pipe 30 passes is provided in the support plate 22, and the oil passage is used to transport the fuel from the oil inlet 211 to the oil injection port 221. At least one cooling channel can be provided near the oil passage, and the oil passage and the oil pipe 30 inside can be cooled to prevent the oil pipe 30 from being deformed or the fuel from being coked due to high temperature.

[0032] In one embodiment, the air outlet is arranged close to the fuel injection port 221. If the air outlet is arranged opposite to the fuel injection port 221, the cooled cooling air can directly contact the fuel sprayed from the fuel injection port 221, which helps to improve the atomization effect and combustion efficiency of the fuel, thereby improving the overall combustion effect.

[0033] like Figure 2 and Figure 3 As shown, the side wall of the support plate 22 is provided with a first groove 222, and the first groove 222 is extended along the height direction of the support plate 22, and the axis of the first groove 222 is perpendicular to the axis of the afterburner inlet. The fuel injection port 221 is provided on the side wall of the first groove 222, and the fuel injected from the fuel injection port 221 can form a stable oil-gas mixture in the first groove 222, thereby achieving the effect of stabilizing the flame. The first groove 222 can also play the role of guiding the airflow and enhancing the mixing, further optimizing the combustion process. In addition, it also helps to reduce the airflow disturbance in the combustion chamber, improve the stability of combustion and the overall performance of the engine. At this time, the air outlet can be provided on the side wall of the first groove 222, such as, the air outlet is arranged opposite to the fuel injection port 221. In one embodiment, the first grooves 222 are provided on opposite sides of the support plate 22, that is, along the flow direction of the airflow in the afterburner 10, the two first grooves are arranged on opposite sides of the support plate.

[0034] Furthermore, the top surface of the inner cone 23 is also provided with a second groove 232, and the first groove 222 is connected to the second groove 232, so that a vortex backflow is formed between the inner cone 23 and the support plate 22, which helps to stabilize the flame and improve the combustion efficiency. The first groove 222 is connected to the second groove 232, and the fuel can be more fully mixed with the airflow after injection, thereby improving the completeness of fuel combustion; it can also reduce the flow loss of the airflow; and further improve the working performance and reliability of the afterburner 10. In one embodiment, the top surface of the inner cone 23 is provided with two second grooves 232, and the two second grooves 232 are respectively arranged on opposite sides of the support plate 22 along the airflow flow direction, and each second groove 232 is connected to the corresponding first groove 222.

[0035] Furthermore, the bottom surface of the diffuser 21 is further provided with a third groove (not shown in the figure), and the third groove is connected to the first groove 222, that is, the third groove, the first groove 222 and the second groove 232 are connected in sequence, so that a vortex reflow is formed between the diffuser 21, the support plate 22 and the inner cone 23, which is helpful to stabilize the flame. In one embodiment, the bottom surface of the diffuser 21 is provided with two third grooves, and the two third grooves are arranged on opposite sides of the support plate 22 along the airflow direction, and each third groove is connected to the corresponding first groove 222.

[0036] The integrated assembly 20 of the bleed air cooled inner cone and support plate diffuser injection stabilizer provided in an embodiment of the present invention also includes a mixer 24. The first side of the mixer 24 is connected to the diffuser 21 and is located on the side of the diffuser 21 away from the inlet of the afterburner combustion chamber 10. The extension direction of the mixer 24 is consistent with the flow direction of the airflow in the afterburner combustion chamber 10.

[0037] In the embodiment of the present invention, the mixer 24 is arranged downstream of the diffuser 21, and the airflow in the first flow channel and the airflow in the second flow channel can be mixed under the action of the mixer 24, thereby reducing flow loss and improving the kinetic energy utilization of the airflow. In the case where an external fuel injection rod is arranged on the top of the afterburner 10, the mixer 24 can quickly mix the fuel sprayed by the external fuel injection rod with the airflow in the first flow channel, which helps to increase the atomization and evaporation speed of the fuel, thereby accelerating the combustion process and improving the combustion efficiency.

[0038] In one embodiment, the mixer 24 is arranged to be tilted downward along a first side of the mixer 24 toward a second side of the mixer 24 , which helps to mix the airflows in the first flow channel and the second flow channel.

[0039] Furthermore, the top surface of the mixer 24 is provided with a first diversion channel 241, which is extended along the extension direction of the mixer 24, and is intended to guide the airflow in the first channel so that it can flow smoothly into the second end of the mixer 24. The bottom surface of the mixer 24 is provided with at least a second diversion channel 242, which is also extended along the extension direction of the mixer 24. A plurality of second diversion channels 242 are arranged at intervals along the width direction of the mixer 24, and the airflow in the second channel can be effectively guided and distributed to the plurality of second diversion channels 242 so as to be mixed with the airflow in the first diversion channel at the end of the mixer 24. In the case of fuel injection by the external culvert spray rod, the airflow can be quickly mixed with the fuel.

[0040] The first diversion channel 241 is located between two adjacent first diversion channels 241, the airflow in the first channel flows along the first diversion channel 241, and the airflow in the second channel flows along the second diversion channel 242. At the end of the mixer 24, the two airflows meet and mix, thereby achieving efficient power enhancement and combustion optimization.

[0041] In one embodiment, the mixer 24 and the diffuser 21 in the embodiment of the present invention are integrally formed. The diffuser 21, the mixer 24, the support plate 22 and the inner cone 23 are integrally formed.

[0042] The inner cone 23 in the embodiment of the present invention includes a first guide portion 233 and a second guide portion 234. The first end of the first guide portion 233 is connected to the afterburner 10 and is located below the inlet of the afterburner 10. The second end of the first guide portion 233 is connected to one end of the second guide portion 234, and the other end of the second guide portion 234 is connected to the bottom inner wall surface of the afterburner 10. The second groove 232 can be provided on the top surface of the first guide portion 233.

[0043] In one embodiment, the second guide portion 234 is an arc-shaped structure, which can better guide the airflow, reduce the loss of the airflow at the bend, and improve the airflow guidance efficiency. The arc-shaped structure usually has a higher structural strength, can withstand high temperature and high pressure working environment, and improve the durability of the inner cone 23. The arc-shaped design helps to reduce the turbulence and separation of the airflow, thereby reducing flow losses and improving the performance of the overall combustion chamber.

[0044] The first guide portion 233 includes a first guide plate and a second guide plate, wherein the first end of the first guide plate is connected to the inner wall surface of the afterburner 10 and is located below the inlet 11 of the afterburner, the top surface of the second guide plate is connected to the bottom surface of the support plate 22, one end of the second guide plate is connected to the second end of the first guide plate, and the other end of the second guide plate is connected to the second guide portion 234. In one embodiment, the first end of the first guide plate is tilted upward toward the direction of the second guide plate.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated assembly of an inner cone and a support plate diffuser fuel injection stabilizer for bleed air cooling, applied to an afterburner, characterized in that: include: A diffuser, a support plate and an inner cone are arranged in the afterburner, wherein the diffuser is arranged on the top surface of the support plate and forms a first flow channel with the top surface of the afterburner; the inner cone is arranged on the bottom surface of the support plate and forms a second flow channel with the bottom surface of the diffuser; the first flow channel and the second flow channel are respectively connected to the inlet of the afterburner; the diffuser, the support plate and the inner cone are an integrally formed part.

2. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 1 is characterized in that: The support plate is provided with a cooling channel, the inner cone is provided with a cooling port, the support plate is provided with an air outlet, the cooling port and the air outlet are respectively communicated with the cooling channel, and the cooling port is used to communicate with the outlet of the cooling device.

3. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 1, characterized in that: The diffuser is provided with an oil inlet, and the side wall of the support plate is provided with an oil injection port, and the oil inlet is communicated with the oil injection port.

4. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 3 is characterized in that: The side wall of the support plate is provided with a first groove, the first groove is extended along the height direction of the support plate, the axis of the first groove is perpendicular to the axis of the afterburner inlet, and the fuel injection port is provided on the side wall of the first groove.

5. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 4 is characterized in that: A second groove is disposed on the top surface of the inner cone, and the first groove is communicated with the second groove.

6. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 1, characterized in that: Also included is a mixer, wherein a first side of the mixer is connected to the diffuser and is located at a side of the diffuser away from the afterburner inlet; And / or, the mixer and the diffuser are an integrally formed part.

7. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 6, characterized in that: The mixer is arranged to slope downward along a first side of the mixer toward a second side of the mixer.

8. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 6 or 7, characterized in that: The top surface of the mixer is provided with a first drainage channel, and the bottom surface of the mixer is provided with at least two second drainage channels, the first drainage channel is located between two adjacent second drainage channels; the first drainage channel and the second drainage channel are both extended along the extension direction of the mixer.

9. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 1, characterized in that: The inner cone includes a first guide portion and a second guide portion, wherein the first guide portion is used to be connected to the side wall of the afterburner, one end of the second guide portion is connected to the first guide portion, and the other end of the second guide portion is connected to the bottom inner wall surface of the afterburner.

10. The integrated assembly of the inner cone and support plate diffuser injection stabilizer for bleed air cooling according to claim 9, characterized in that: The second drainage portion is an arc-shaped structure.

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