A combustion chamber adopting a petal-shaped micro-diffusion nozzle structure

Abstract

The present invention relates to the technical field of hydrogen fuel combustion chambers, and provides a combustion chamber adopting a petal-shaped micro-diffusion nozzle structure, comprising a main combustion stage one, a main combustion stage two, a pre-combustion stage, and a nozzle plate, wherein the hydrogen flow rates of the main combustion stage one, the main combustion stage two, and the pre-combustion stage decrease in sequence; the pre-combustion stage is located at the center of the nozzle plate; a plurality of petal-shaped unit-level nozzles are provided on the nozzle plate, wherein the petal-shaped unit-level nozzles are located on the end surface of the nozzle plate and have a plurality of air through holes; the end side walls of the main combustion stage one and the main combustion stage two have a plurality of hydrogen spray holes; the hydrogen spray holes are arranged in a one-to-one correspondence with the air through holes, and the center of the hydrogen spray hole is on the same plane as the outlet plane of the air through hole. The present invention can solve the problem of backfire when hydrogen fuel is burned in a traditional combustion chamber; and can suppress hydrogen fuel combustion oscillation by changing the diameter of the hydrogen spray hole and performing a heating test.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel combustion chambers, and in particular to a combustion chamber adopting a petal-shaped micro-diffusion nozzle structure. Background Art

[0002] To address global warming, it's necessary to actively promote new energy technologies in aviation engines and ground-based combustion engines, which rely primarily on traditional fossil fuels. As a clean and sustainable energy carrier, hydrogen energy is gaining increasing attention.

[0003] However, due to the different combustion characteristics of hydrogen, established gas turbine combustion systems cannot be directly applied to hydrogen combustion. Adding hydrogen to the fuel in a conventional gas turbine combustor increases the flame temperature and creates the risk of flashback. These problems are exacerbated as the hydrogen content in the fuel increases.

[0004] Therefore, how to provide a combustion chamber that can reduce the flashback problem of hydrogen fuel combustion is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] The present invention provides a combustion chamber adopting a petal-shaped micro-diffusion nozzle structure, which is used to solve the defects of hydrogen fuel combustion in the prior art such as easy backfire and high NOx emission.

[0006] The present invention provides a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure, comprising a primary main combustion stage, a secondary main combustion stage, a pre-combustion stage, and a nozzle plate, wherein the hydrogen flow rates of the primary main combustion stage, the secondary main combustion stage, and the pre-combustion stage decrease in sequence; the pre-combustion stage is located at the center of the nozzle plate;

[0007] A plurality of petal-shaped unit-level nozzles are arranged on the nozzle plate, wherein the petal-shaped unit-level nozzles are located on the end surface of the nozzle plate and have a plurality of air through holes; the end side walls of the main combustion stage one and the main combustion stage two have a plurality of hydrogen spray holes; the hydrogen spray holes are arranged in a one-to-one correspondence with the air through holes, and the center of the hydrogen spray hole is on the same plane as the outlet plane of the air through hole.

[0008] According to the present invention, a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure further includes:

[0009] A hydrogen collecting chamber, used for storing hydrogen and supplying hydrogen to the first main combustion stage and / or the second main combustion stage;

[0010] A bracket is connected to the hydrogen collecting cavity, and the bracket is used to support the hydrogen collecting cavity.

[0011] According to a combustion chamber using a petal-shaped micro-diffuser nozzle structure provided by the present invention, the hydrogen gas collecting chamber includes a primary hydrogen inlet chamber for the main combustion stage and a secondary hydrogen inlet chamber for the main combustion stage; the primary hydrogen inlet pipe for the main combustion stage is provided, and the secondary hydrogen inlet pipe for the main combustion stage is provided;

[0012] The main combustion first-stage hydrogen inlet cavity is communicated with the main combustion first-stage hydrogen inlet pipe;

[0013] The main combustion secondary hydrogen inlet cavity is in communication with the main combustion secondary hydrogen inlet pipe;

[0014] Furthermore, the main combustion secondary hydrogen intake cavity and the main combustion primary hydrogen intake cavity are separately arranged.

[0015] According to a combustion chamber adopting a petal-shaped micro-diffusion nozzle structure provided by the present invention, the diameter of the hydrogen spray hole is 0.4-0.8 mm.

[0016] According to a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure provided by the present invention, the petal-shaped unit-level nozzles are distributed in two inner and outer circle arrays on the nozzle plate, and in the outer circle position, the second main combustion stage and the first main combustion stage are spaced apart, and the first main combustion stage is arranged in the inner circle position.

[0017] According to a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure provided by the present invention, a cooling structure is provided on the nozzle plate, and the cooling structure is used to cool the petal-shaped unit-level nozzle.

[0018] According to a combustion chamber using a petal-shaped micro-diffuser nozzle structure provided by the present invention, the cooling structure includes:

[0019] There are multiple cooling air inlet holes distributed on the side of the nozzle plate facing the hydrogen collecting cavity;

[0020] a cooling chamber located inside the nozzle plate;

[0021] Cooling air outlet holes are located on the peripheral side of the petal-shaped unit-level nozzle;

[0022] The cooling air inlet hole and the cooling air outlet hole are both communicated with the cooling chamber.

[0023] According to the present invention, a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure further includes:

[0024] A vortex generator is provided at the petal-shaped unit-level nozzle, and the vortex generator is communicated with the air through hole.

[0025] According to the present invention, a combustion chamber adopting a petal-shaped micro-diffuser nozzle structure is provided, wherein the hydrogen collecting cavity is arranged in an annular shape, and further comprises:

[0026] An ignition rod passes through the nozzle plate and the hydrogen gas collecting chamber, and the ignition rod is separated from the hydrogen gas collecting chamber.

[0027] A combustion chamber adopting a petal-shaped micro-diffusion nozzle structure provided by the present invention also includes a flame tube, which is used to provide a combustion space.

[0028] The combustion chamber provided by the present invention adopts a petal-shaped micro-diffusion nozzle structure, in which the hydrogen flow rate decreases successively through the main combustion stage one, the main combustion stage two and the pre-combustion stage. A plurality of petal-shaped unit-level nozzles are arranged on the nozzle plate, and the petal-shaped unit-level nozzles have a plurality of air through-holes. The ends of the main combustion stage one and the main combustion stage two have a plurality of hydrogen spray holes, and the hydrogen spray holes and the air through-holes are arranged in a one-to-one correspondence. The center of the hydrogen spray hole and the outlet plane of the air through-hole are on the same plane. The combustion chamber with a micro-diffusion nozzle structure formed by the above structure can not only solve the problem of backfire when hydrogen fuel is burned in a traditional combustion chamber; but also suppress the combustion oscillation of hydrogen fuel by changing the diameter of the hydrogen spray hole and the heating test; at the same time, through the multiple unit-level nozzles, the fuel is mixed more evenly, avoiding excessive local flame temperature and reducing the generation of NOx. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 any creative work.

[0030] Figure 1 This is one of the structural schematic diagrams of the combustion chamber using a petal-shaped micro-diffusion nozzle structure provided by the present invention;

[0031] Figure 2 This is a partial enlarged schematic diagram of the combustion chamber structure using a petal-shaped micro-diffuser nozzle structure provided by the present invention;

[0032] Figure 3 This is the second structural schematic diagram of the combustion chamber using the petal-shaped micro-diffusion nozzle structure provided by the present invention;

[0033] Figure 4 This is a front view of a combustion chamber using a petal-shaped micro-diffuser nozzle structure provided by the present invention;

[0034] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0035] Figure 6 yes Figure 4 A cross-sectional view of the BB in FIG;

[0036] Reference numerals:

[0037] 1. Main combustion stage 1; 2. Main combustion stage 2; 3. Pre-combustion stage; 4. Nozzle plate; 5. Air hole; 6. Hydrogen nozzle hole; 7. Hydrogen gas collecting chamber; 8. Bracket; 9. Main combustion stage 1 hydrogen inlet chamber; 10. Main combustion stage 2 hydrogen inlet chamber; 11. Main combustion stage 1 hydrogen inlet pipe; 12. Main combustion stage 2 hydrogen inlet pipe; 13. Cooling inlet hole; 14. Cooling chamber; 15. Cooling outlet hole; 16. Vortex generator; 17. Ignition rod; 18. Flame tube; 19. Pre-combustion stage hydrogen inlet pipe. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] 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", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0040] The following combination Figures 1 to 6 The combustion chamber of the present invention adopts a petal-shaped micro-diffusion nozzle structure.

[0041] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a combustion chamber with a petal-shaped micro-diffusion nozzle structure, including a main combustion stage 1, a main combustion stage 2, a pre-combustion stage 3 and a nozzle plate 4. The hydrogen flow rates of the main combustion stage 1, the main combustion stage 2 and the pre-combustion stage 3 decrease in sequence to adapt to different stages of the combustion process. The pre-combustion stage 3 is located at the center of the nozzle plate 4 and is used to pre-ignite the fuel to promote the smooth progress of the combustion process. A plurality of petal-shaped unit-level nozzles are provided on the nozzle plate 4 to increase the contact area between the hydrogen fuel and the air and improve the mixing effect. Among them, the petal-shaped unit-level nozzle is located on the end face of the nozzle plate 4 and has a plurality of air through holes 5 for introducing air and fuel for mixing. The end side walls of the main combustion stage 1 and the main combustion stage 2 are provided with a plurality of hydrogen spray holes 6; the hydrogen spray holes 6 are arranged in a one-to-one correspondence with the air through holes 5, and the center of the hydrogen spray hole 6 is on the same plane as the outlet plane of the air through hole 5 to ensure that the fuel and air can be fully mixed at the moment of spraying.

[0042] The above embodiments provided by the present invention form a combustion chamber with a micro-diffusion nozzle structure through the above structure, which can solve the problem of backfire when hydrogen fuel burns in a traditional combustion chamber, and can suppress hydrogen fuel oscillation by changing the diameter of the hydrogen nozzle and heating test.

[0043] like Figure 1 and Figure 3 As shown, in a feasible embodiment of the present invention, it also includes a hydrogen collecting chamber 7 and a bracket 8. The hydrogen collecting chamber 7 is used to store hydrogen and supply hydrogen to the main combustion stage 1 and / or the main combustion stage 2; the setting of the hydrogen collecting chamber 7 takes into account the storage capacity, safety and stability of hydrogen supply of hydrogen, ensuring that the combustion process is carried out continuously and stably. The bracket 8 is connected to the hydrogen collecting chamber 7, and the bracket 8 is used to support the hydrogen collecting chamber 7. The setting of the bracket 8 and the hydrogen collecting chamber 7 forms a birdcage-type collecting chamber, which ensures the load-bearing capacity, stability and installation convenience of the bracket 8 for the hydrogen collecting chamber 7 to meet the needs of different usage scenarios.

[0044] like Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, in a feasible embodiment of the present invention, the hydrogen gas collection chamber 7 includes a main combustion stage one hydrogen gas inlet chamber 9 and a main combustion stage two hydrogen gas inlet chamber 10; the main combustion stage one 1 has a main combustion stage one hydrogen gas inlet pipe 11, and the main combustion stage two 2 has a main combustion stage two hydrogen gas inlet pipe 12; the main combustion stage one hydrogen gas inlet chamber 9 is connected to the main combustion stage one hydrogen gas inlet pipe 11 to provide hydrogen to the main combustion stage one 1; the main combustion stage two hydrogen gas inlet chamber 10 is connected to the main combustion stage two hydrogen gas inlet pipe 12 to provide hydrogen to the main combustion stage two 2. The main combustion stage two hydrogen gas inlet chamber 10 and the main combustion stage one hydrogen gas inlet chamber 9 are separated to ensure the safety of independent supply and management of hydrogen to the main combustion stage two hydrogen gas inlet chamber 10 and the main combustion stage one hydrogen gas inlet chamber 9. The pre-combustion stage 3 has a pre-combustion stage hydrogen gas inlet pipe 19 for providing hydrogen to the pre-combustion stage 3.

[0045] In a feasible embodiment of the present invention, the diameter of the hydrogen nozzle 6 is 0.4-0.8 mm. By setting the hydrogen nozzle 6 to different diameters, the combustion characteristics can be studied, and setting the diameter of the hydrogen nozzle 6 to 0.4-0.8 mm has a suppressive effect on oscillation.

[0046] like Figure 4 As shown, in a feasible embodiment of the present invention, the petal-shaped unit-level nozzles are distributed in an inner and outer circle array on the nozzle plate 4. In the outer circle, the main combustion stage 2 2 is spaced apart from the main combustion stage 1, and the main combustion stage 1 is arranged in the inner circle. It is more convenient to adjust the hydrogen flow rate, balance the equivalence ratio at different powers, ensure that the emissions are not too high, and ensure uniform distribution.

[0047] See again Figure 3 and Figure 6 As shown, the main combustion stage one 1 can enter the main combustion stage one hydrogen inlet cavity 9 through two main combustion stage one hydrogen inlet pipes 11 and then be transported to 6-10 petal-shaped unit-level nozzles respectively. The main combustion stage two 2 can enter the main combustion stage two hydrogen inlet cavity 10 through one main combustion stage two hydrogen inlet pipe 12 and then be transported to 2-6 petal-shaped unit-level nozzles respectively.

[0048] Specifically, eight petal-shaped unit-level nozzles can be set in the outer ring, including four main combustion stage one 1 and four main combustion stage two 2, and the four main combustion stage one 1 and four main combustion stage two 2 are distributed at intervals. Four petal-shaped unit-level nozzles can be set in the inner ring, and all four petal-shaped unit-level nozzles are main combustion stage one 1.

[0049] In one feasible embodiment of the present invention, to maintain the stability of nozzle plate 4 and extend its service life in high-temperature environments, a cooling structure is provided on nozzle plate 4. This cooling structure is used to cool the petal-shaped unit-level nozzles. The cooling structure effectively cools the petal-shaped unit-level nozzles using a cooling medium. This not only reduces the temperature of nozzle plate 4 but also prevents damage or failure of the nozzles due to overheating.

[0050] In a feasible embodiment of the present invention, the cooling medium can be selected as cooling air, and the cooling structure includes a cooling air inlet 13, a cooling chamber 14 and a cooling air outlet 15. There are multiple cooling air inlets 13, which are distributed on the side of the nozzle plate 4 facing the hydrogen gas collecting chamber 7. The cooling air inlet 13 is used to introduce cold air. The cooling chamber 14 is located inside the nozzle plate 4 and is connected to the cooling air inlet 13 and the cooling air outlet 15. The cooling air flows in the cooling chamber 14 to cool the nozzle plate 4. The cooling air outlet 15 is located on the peripheral side of the petal-shaped unit-level nozzle; the cooling air inlet 13 and the cooling air outlet 15 are both connected to the cooling chamber 14. After flowing in the cooling chamber 14, the cooling air is discharged through the cooling air outlet 15, forming a cooling airflow to take away the heat on the nozzle plate 4.

[0051] The working principle of the above embodiment is that during the combustion process, the hydrogen in the hydrogen collecting cavity 7 is supplied to the main combustion stage 1 1 and the main combustion stage 2 2 through the main combustion stage 1 hydrogen inlet cavity 9 and the main combustion stage 2 hydrogen inlet cavity 10 respectively. The pre-combustion stage 3 first ignites the fuel to form a stable flame. Subsequently, the main combustion stage 1 1 and the main combustion stage 2 2 are sequentially sprayed with hydrogen according to the set flow rate and sequence. At the same time, the cooling gas enters the cooling chamber 14 through the cooling air inlet hole 13, flows in the cooling chamber 14, and cools the nozzle plate 4. The cooled cooling gas is discharged through the cooling air outlet hole 15 to form a cooling airflow, which takes away the heat from the nozzle plate 4. This cooling structure ensures the stable operation of the nozzle plate in a high-temperature environment.

[0052] like Figure 5 As shown, in one feasible embodiment of the present invention, a vortex generator 16 is further included, disposed at the petal-shaped unit-level nozzle, and is in communication with the air through-hole 5. The vortex generator 16 can generate a vortex within the combustion chamber, causing the air entering the combustion chamber to form a rotating flow, thereby more effectively mixing with the ejected hydrogen. This vortex flow promotes mixing of fuel and air in the combustion chamber, improving combustion efficiency.

[0053] In one possible embodiment of the present invention, the hydrogen manifold 7 is annular and includes an ignition rod 17 that penetrates the nozzle plate 4 and the hydrogen manifold 7. The ignition rod 17 is separated from the hydrogen manifold 7 to prevent hydrogen from directly contacting the non-ignition portion of the ignition rod 17. This separation may be for safety reasons, preventing hydrogen from accidentally igniting when ignition is not required, thereby preventing a dangerous situation.

[0054] See again Figure 3 As shown, in a feasible embodiment of the present invention, a flame tube 18 is further included to provide a combustion space. The flame tube 18 may be used to control the flow direction and speed of the hydrogen flowing out of the hydrogen collecting chamber 7 through the nozzle plate 4. Since the flame tube 18 is annular and perpendicular to the nozzle plate 4, it can guide the hydrogen to flow along a specific path or limit the diffusion range of the hydrogen. The vertical arrangement of the flame tube 18 also enhances the structural stability of the nozzle plate 4. In particular, under high pressure or high flow rate conditions, the nozzle plate 4 needs to withstand greater forces. The flame tube 18 can provide additional support to prevent deformation or damage to the nozzle plate 4.

[0055] In summary, the combustion chamber provided by the present invention adopts a petal-shaped micro-diffusion nozzle structure. During the combustion process, the hydrogen in the hydrogen collecting cavity 7 is supplied to the main combustion stage 1 1 and the main combustion stage 2 2 through the main combustion stage 1 hydrogen inlet cavity 9 and the main combustion stage 2 hydrogen inlet cavity 10 respectively. The pre-combustion stage 3 first ignites the fuel to form a stable flame. Subsequently, the main combustion stage 1 1 and the main combustion stage 2 2 are sequentially sprayed with hydrogen according to the set flow rate and sequence. At the same time, the cooling gas enters the cooling chamber 14 through the cooling air inlet hole 13, flows in the cooling chamber 14, and cools the nozzle plate 4. The cooled cooling gas is discharged through the cooling air outlet hole 15 to form a cooling airflow, which takes away the heat from the nozzle plate 4. This cooling structure ensures the stable operation of the nozzle plate 4 in a high-temperature environment.

[0056] In addition, the vortex generator 16 is provided at the petal-shaped unit-level nozzle, so that the air entering the combustion chamber forms a rotating flow, thereby being more effectively mixed with the ejected hydrogen.

[0057] Therefore, the combustion chamber provided by the present invention adopting a petal-shaped micro-diffusion nozzle structure can avoid the backfire phenomenon of hydrogen fuel, and can suppress oscillation by changing the diameter of the hydrogen nozzle 6 and the heating test of the air intake.

[0058] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0060] 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 various embodiments of the present invention.

Claims

1. A combustion chamber adopting a petal-shaped micro-diffuser nozzle structure, characterized in that: The invention comprises a main combustion stage (1), a main combustion stage (2), a pre-combustion stage (3) and a nozzle plate (4), wherein the hydrogen flow rates of the main combustion stage (1), the main combustion stage (2) and the pre-combustion stage (3) decrease in sequence; The nozzle plate (4) is provided with a plurality of petal-shaped unit-level nozzles, wherein the petal-shaped unit-level nozzles are located on the end surface of the nozzle plate (4) and have a plurality of air through holes (5); the end side walls of the main combustion stage one (1) and the main combustion stage two (2) are provided with a plurality of hydrogen spray holes (6); the hydrogen spray holes (6) are arranged in a one-to-one correspondence with the air through holes (5), and the centers of the hydrogen spray holes (6) and the outlet plane of the air through holes (5) are on the same plane.

2. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 1, characterized in that: Also includes: A hydrogen collecting chamber (7) for storing hydrogen and supplying hydrogen to the primary combustion stage (1) and / or the secondary combustion stage (2); A bracket (8) is connected to the hydrogen gas collecting chamber (7), and the bracket (8) is used to support the hydrogen gas collecting chamber (7).

3. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 2, characterized in that: The hydrogen gas collecting chamber (7) comprises a primary combustion hydrogen gas inlet chamber (9) and a secondary combustion hydrogen gas inlet chamber (10); the primary combustion stage (1) has a primary combustion hydrogen gas inlet pipe (11), and the secondary combustion stage (2) has a secondary combustion hydrogen gas inlet pipe (12); The main combustion first-stage hydrogen inlet cavity (9) is in communication with the main combustion first-stage hydrogen inlet pipe (11); The main combustion secondary hydrogen gas inlet cavity (10) is in communication with the main combustion secondary hydrogen gas inlet pipe (12); Furthermore, the main combustion secondary hydrogen gas inlet cavity (10) and the main combustion primary hydrogen gas inlet cavity (9) are separately arranged.

4. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 1, characterized in that: The diameter of the hydrogen spray hole (6) is 0.4-0.8 mm.

5. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 1, characterized in that: The petal-shaped unit-level nozzles are distributed in two inner and outer circle arrays on the nozzle plate (4). In the outer circle, the second main combustion stage (2) is spaced apart from the first main combustion stage (1), and the first main combustion stage (1) is arranged in the inner circle.

6. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 2, characterized in that: A cooling structure is provided on the nozzle plate (4), and the cooling structure is used to cool the petal-shaped unit-level nozzle.

7. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 6, characterized in that: The cooling structure comprises: A plurality of cooling air inlet holes (13) are distributed on a side of the nozzle plate (4) facing the hydrogen collecting cavity (7); a cooling chamber (14) located inside the nozzle plate (4); Cooling air outlet holes (15) are located on the peripheral side of the petal-shaped unit-level nozzle; The cooling air inlet hole (13) and the cooling air outlet hole (15) are both in communication with the cooling chamber (14).

8. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 1, characterized in that: Also includes: A vortex generator (16) is provided at the petal-shaped unit-level nozzle, and the vortex generator (16) is communicated with the air through hole (5).

9. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 2, characterized in that: The hydrogen collecting chamber (7) is arranged in an annular shape and further comprises: An ignition rod (17) passes through the nozzle plate (4) and the hydrogen gas collecting chamber (7), and the ignition rod (17) is separated from the hydrogen gas collecting chamber (7).

10. The combustion chamber using a petal-shaped micro-diffuser nozzle structure according to claim 2, characterized in that: The invention also comprises a flame tube (18) for providing a combustion space.

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