Array microtube premixing staged hydrogen fuel combustion chamber

Abstract

The invention relates to the technical field of gas turbines, and provides an array micropipe premixing staged hydrogen fuel combustion chamber which comprises micropipes, a first feeding pipe, a second feeding pipe, a premixing cavity outer casing and a flame tube outer casing. The outer side face of the flame tube outer casing is sleeved with the premixing cavity outer casing, a gap is reserved between the premixing cavity outer casing and the flame tube outer casing, a premixing cavity is formed in the premixing cavity outer casing, and the multiple micro-tubes are arranged in the premixing cavity side by side and extend into the flame tube outer casing; the micropipe is provided with a first air inlet and an air outlet which are oppositely arranged, a second air inlet is formed in the outer side face of the micropipe, the first feeding pipe is communicated with the first air inlet, and the second feeding pipe and the gap are both communicated with the second air inlet. Combustion is carried out in an array micro-pipe mode, inlets of fuel, oxygen and working media are independent, efficient combustion is achieved through synchronous classification of the oxygen and the fuel, the mixing efficiency of the working media and hydrogen is improved through transverse injection of the working media in the micro-pipes, and then NOx emission of the combustion chamber is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbines, and in particular to an array micro-tube premixed staged hydrogen fuel combustion chamber. Background Art

[0002] There are many ways to design hydrogen fuel combustion chambers in existing gas turbines, including micro-premixed combustion, micro-diffusion combustion, and diluted combustion. Among them, micro-diffusion combustion and diluted combustion are difficult to control the mixing ratio of hydrogen and oxygen. Although they reduce NOx emissions within a certain range, it is difficult to meet the further low-emission requirements in the future. At present, mainstream gas turbine manufacturers use micro-premixed combustion technology for hydrogen fuel combustion chambers. By fully mixing hydrogen and oxygen, the combustion efficiency is improved and NOx emissions are further reduced, but the risk of combustion instability and flashback is increased, and the working fluid is limited to air, and there is no relevant design for inert gas working fluids. Summary of the invention

[0003] The invention provides an array micro-tube premixed staged hydrogen fuel combustion chamber, which is used to solve the problem of insufficient combustion in the hydrogen fuel combustion chamber in the prior art.

[0004] The present invention provides an array micro-tube premixed staged hydrogen fuel combustion chamber, comprising: a micro-tube, a first feed pipe, a second feed pipe, a premixing chamber outer casing and a flame tube outer casing; The premixing chamber outer casing is sleeved on the outer side surface of the flame tube outer casing, and a gap suitable for the working medium to enter is left between the premixing chamber outer casing and the flame tube outer casing. A premixing chamber is arranged in the premixing chamber outer casing, and a plurality of microtubes are arranged side by side in the premixing chamber and extend into the flame tube outer casing; the microtube has a first air inlet and an air outlet arranged opposite to each other, and a second air inlet is arranged on the outer side surface of the microtube, the first feed pipe is connected to the first air inlet, and the second feed pipe and the gap are both connected to the second air inlet.

[0005] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, a plurality of the microtubes are divided into a plurality of mutually isolated microtube groups by partitions, the first feed pipe includes a plurality of first branch feed pipes, each of the first branch feed pipes corresponds one-to-one to each of the microtube groups, and the second feed pipe includes a plurality of second branch feed pipes, each of the second branch feed pipes corresponds one-to-one to each of the microtube groups.

[0006] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the partition includes a shell and a partition plate, the shell is arranged in the premixing chamber, the shell includes a top wall and a side wall, one side of the partition plate is connected to the top wall, the extension direction of the partition plate is the same as the extension direction of the side wall, the partition plate divides the interior of the shell into a plurality of isolated installation cavities, and a group of the microtube groups is arranged in each installation cavity.

[0007] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the partition also includes a mounting plate, the mounting plate is arranged on the side wall and is spaced relative to the top wall, the partition plate is arranged through the mounting plate, the mounting plate divides each of the mounting cavities into a first air intake cavity and a mixing cavity, the mounting plate is provided with a plurality of mounting holes, each of the microtubes in each of the microtube groups is arranged in the corresponding mounting hole, and each of the first air intake ports is connected to the corresponding first air intake cavity; wherein each of the first branch feed pipes is connected to the corresponding first air intake cavity, and each of the second branch feed pipes is connected to the corresponding mixing cavity.

[0008] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the partition also includes a flow equalizer plate, which is arranged on the side wall and is spaced relative to the mounting plate, and the partition plate is arranged through the flow equalizer plate. The flow equalizer plate divides each of the mixing chambers into a second air inlet chamber and a third air inlet chamber, and the flow equalizer plate is provided with an air hole, and the second air inlet chamber is connected with the third air inlet chamber through the air hole, and each of the second branch feed pipes is connected with the corresponding second air inlet chamber, and each of the microtubes in each of the microtube groups is arranged through the flow equalizer plate, and the second air inlet corresponds to the third air inlet chamber.

[0009] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, a plurality of microtubes are arranged in a plurality of rows in the circumferential direction, each row of microtubes is arranged in a spiral, and the number of microtubes in each row is different.

[0010] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, it also includes a plurality of guide vanes, wherein the plurality of guide vanes are arranged between the outer casing of the premixing chamber and the outer casing of the flame tube, and the plurality of guide vanes are arranged in sequence along the circumferential direction of the outer casing of the flame tube.

[0011] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the microtube includes a first tube body and a second tube body, the first tube body is provided with a first air inlet and an injection port relative to each other, the end of the first tube body provided with the injection port is inserted into the second tube body, the outer side surface of the second tube body is provided with a second air inlet, and the end of the second tube body away from the injection port is provided with an air outlet.

[0012] According to an array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the diameter of the second air inlet is 0.2-1.0D, wherein D is the inner diameter of the microtube; and / or,

[0013] The sum of the geometric areas of the plurality of second air inlets is 0.5 to 1.5 times the area of ​​the microtube; and / or,

[0014] A plurality of rows of the second air inlets are arranged along the length direction of the second tube body, and the number of the second air inlets in each row is 2 to 6.

[0015] According to the array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention, the diameter of the injection port is 0.5-2 mm; and / or,

[0016] The air outlet is a contraction-shaped air outlet.

[0017] The array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention uses an array microtube for combustion, and the inlets of fuel, oxygen and working fluid are independent of each other. Efficient combustion is achieved in a wide range of operating conditions through synchronous staging of oxygen and fuel, and the lateral injection of working fluid in the microtubes can improve the mixing efficiency of working fluid and hydrogen, thereby effectively reducing NOx emissions from the combustion chamber, so that the NOx emissions of the staged combustion chamber are less than or equal to 15ppm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is one of the structural schematic diagrams of the array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention.

[0020] Figure 2 yes Figure 1 AA section view.

[0021] Figure 3This is the second structural schematic diagram of the array microtube premixed staged hydrogen fuel combustion chamber provided by the present invention.

[0022] Figure 4 yes Figure 3 BB section view.

[0023] Figure 5 It is a schematic diagram of the microtubule arrangement provided by the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the microtubule provided by the present invention.

[0025] Figure 7 yes Figure 6 CC section view.

[0026] Reference numerals: 1. Premixing chamber outer casing; 101. First premixing chamber outer casing; 102. Second premixing chamber outer casing; 111. Premixing chamber; 2. Flame tube outer casing; 3. Microtube; 31. First tube body; 311. Injection port; 32. Second tube body; 321. Second air inlet; 322. Air outlet; 4. First feed pipe; 5. Second feed pipe; 6. Ignitor; 7. Swirler; 8. Partition plate; 9. First combustion zone; 10. Second combustion zone; 11. Third combustion zone; 12. Fourth combustion zone; 13. Combustion stage; 14. Guide vane; 15. Gap. DETAILED DESCRIPTION

[0027] 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.

[0028] The actual working range of gas turbines is wide. The existing staged burners only stage the fuel, while the combustion chamber in the inert gas working medium requires the simultaneous staging of oxygen and fuel, otherwise incomplete combustion will occur. The next generation of more advanced gas turbines proposes a circulation method using inert gas (water vapor, carbon dioxide, etc.) as the working medium, which has the advantage of higher circulation efficiency, but this requires the combustion chamber to use three-component combustion in an inert gas environment, and the fuel, oxygen and working medium enter the combustion chamber separately.

[0029] In order to solve the above problems, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, the array micro-tube premixed staged hydrogen fuel combustion chamber of the embodiment of the present invention comprises: micro-tubes 3, a first feed pipe 4, a second feed pipe 5, a premixing chamber outer casing 1 and a flame tube outer casing 2.

[0030] The premixing chamber outer casing 1 is mounted on the outer side of the flame tube outer casing 2, and a gap 15 suitable for the working medium to enter is reserved between the premixing chamber outer casing 1 and the flame tube outer casing 2. Exemplarily, the premixing chamber outer casing 1 includes a first premixing chamber outer casing 101 and a second premixing chamber outer casing 102, and the second premixing chamber outer casing 102 is mounted on the outer side of the flame tube outer casing 2, and part of the flame tube outer casing 2 extends to the outside of the second premixing chamber outer casing 102. In other words, the length of the flame tube outer casing 2 is greater than the length of the second premixing chamber outer casing 102.

[0031] Among them, a premixing chamber 111 is arranged in the first premixing chamber outer casing 101, and a plurality of microtubes 3 are arranged side by side in the premixing chamber 111 and extend into the flame tube outer casing 2. In practical applications, a fixing plate is arranged inside the flame tube outer casing 2, and the ends of the plurality of microtubes 3 can be installed on the fixing plate.

[0032] Specifically, the microtube 3 has a first air inlet and an air outlet 322 arranged opposite to each other, a second air inlet 321 is arranged on the outer side of the microtube 3, the first feed pipe 4 is connected to the first air inlet, and the second feed pipe 5 and the gap 15 are both connected to the second air inlet 321. Among them, the first feed pipe 4 can be used to transport hydrogen fuel, the second feed pipe 5 can be used to transport oxygen, and the working medium can enter the premixing chamber 111 through the gap 15, and then enter the second air inlet 321, that is, oxygen can be premixed with the working medium first, and the premixed oxygen and working medium are sprayed into the microtube 3 from the second air inlet 321 on the microtube 3 horizontally, and efficiently mixed with hydrogen.

[0033] It should be noted that the array microtube premixed staged hydrogen fuel combustion chamber of the embodiment of the present invention can operate in an inert gas working medium environment (fuel, oxygen, inert gas working medium three components) or a conventional air environment (fuel, air two components).

[0034] It is particularly important to point out that the array microtube premixed staged hydrogen fuel combustion chamber further includes an igniter 6 and a swirler 7, which are arranged in the microtubes 3 arranged in the array, so that a combustion stage 13 can be formed at the gas outlet 322.

[0035] In the embodiment of the present invention, combustion is carried out in the form of an array of microtubes 3, the inlets of fuel, oxygen and working fluid are independent of each other, and efficient combustion is achieved in a wide range of operating conditions through synchronous staging of oxygen and fuel, and lateral injection of working fluid in the microtubes 3 can improve the mixing efficiency of working fluid and hydrogen, thereby effectively reducing NOx emissions from the combustion chamber, so that the NOx emissions of the staged combustion chamber are less than or equal to 15ppm.

[0036] In some embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a plurality of microtubes 3 are divided into a plurality of mutually isolated microtube groups by a separator, a first feed pipe 4 includes a plurality of first branch feed pipes, each of which corresponds to each microtube group, and a second feed pipe 5 includes a plurality of second branch feed pipes, each of which corresponds to each microtube group. It should be noted that each microtube group may include 10 to 60 microtubes 3.

[0037] For example, Figure 2 As shown, the plurality of microtubes 3 are divided into four mutually isolated microtube groups by a separator, so that a first combustion zone 9, a second combustion zone 10, a third combustion zone 11 and a fourth combustion zone 12 can be formed, the first combustion zone 9 is located at the center, the second combustion zone 10 is located at the periphery of the first combustion zone 9, and the third combustion zone 11 and the fourth combustion zone 12 are located at the periphery of the second combustion zone 10. Among them, the first feed pipe 4 includes four first branch feed pipes, and the four first branch feed pipes correspond to the four microtube groups forming the four combustion zones respectively, and the second feed pipe 5 includes four second branch feed pipes, and the four second branch feed pipes correspond to the four microtube groups forming the four combustion zones respectively.

[0038] That is to say, each microtube group is provided with a corresponding first branch feed pipe and a second branch feed pipe. Among them, the first branch feed pipe can be a one-to-two pipe or a one-to-three pipe, etc., which is not specifically limited here. The structure of the second branch feed pipe is the same as that of the first branch feed pipe, which is not repeated here.

[0039] In some embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the partition includes a shell and a partition plate 8. The shell is arranged in the premixing chamber 111. The shell includes a top wall and a side wall. One side of the partition plate 8 is connected to the top wall. The extension direction of the partition plate 8 is the same as the extension direction of the side wall. The partition plate 8 divides the interior of the shell into a plurality of isolated installation chambers, and a group of microtube groups is arranged in each installation chamber.

[0040] It should be noted that one end of the shell is open, so that it can ensure that the working fluid entering the premixing chamber 111 through the gap 15 can enter each installation cavity and finally enter the second air inlet 321 of the corresponding micro-tube 3.

[0041] In some embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the partition also includes a mounting plate, which is arranged on the side wall and spaced relative to the top wall, and the partition plate 8 is arranged through the mounting plate. The mounting plate divides each mounting cavity into a first air inlet cavity and a mixing cavity. The mounting plate is provided with a plurality of mounting holes, and each microtube 3 in each microtube group is arranged in a corresponding mounting hole, and each first air inlet is connected to the corresponding first air inlet cavity; wherein each first branch feed pipe is connected to the corresponding first air inlet cavity, and each second branch feed pipe is connected to the corresponding mixing cavity. It should be noted that the second air inlet 321 corresponds to the mixing cavity.

[0042] Exemplarily, the microtube group constituting the first combustion zone 9 includes ten microtubes 3, the ten microtubes 3 are located in the same mounting cavity, and the ten microtubes 3 correspond to the ten mounting holes one by one, and the first air inlets of the ten microtubes 3 are all connected to the corresponding first air inlet cavity, so that a first branch feed pipe is connected to the first air inlet cavity, and a second branch feed pipe is connected to the corresponding mixing cavity. It should be noted that the second branch feed pipe can be sequentially arranged through the top wall and the mounting plate to extend into the corresponding mixing cavity.

[0043] In some embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the partition also includes a flow equalizer plate, which is arranged on the side wall and is spaced relative to the mounting plate. The partition plate 8 runs through the flow equalizer plate. The flow equalizer plate divides each mixing chamber into a second air inlet chamber and a third air inlet chamber. The flow equalizer plate is provided with air holes. The second air inlet chamber is connected to the third air inlet chamber through the air holes. Each second branch feed pipe is connected to the corresponding second air inlet chamber. Each microtube 3 in each microtube group runs through the flow equalizer plate, and the second air inlet 321 corresponds to the third air inlet chamber.

[0044] It should be noted that the second branch feed pipe can be sequentially arranged through the top wall and the mounting plate to extend into the corresponding second air inlet cavity. Thus, oxygen can enter the third air inlet cavity through the air vents and be premixed with the working fluid entering the third air inlet cavity. The premixed working fluid and oxygen enter the microtube 3 through the second air inlet port 321.

[0045] In some embodiments, Figure 5 As shown, a plurality of microtubes 3 are arranged in a plurality of rows in the circumferential direction, each row of microtubes 3 is arranged in a spiral, and the number of microtubes 3 in each row is different. The length of each microtube 3 can be different and can be selected according to actual needs.

[0046] It should be noted that the distance between two adjacent micro-tubes 3 is 1.4-2.5D, and the outer diameter of the swirler 7 of the pre-combustion stage of the first combustion zone 9 is 2-6D, wherein D is the inner diameter of the micro-tube 3 .

[0047] In the embodiment of the present invention, the array microtubes 3 suppress high-frequency combustion oscillations through a non-orthogonal spiral arrangement, thereby avoiding combustion instability.

[0048] In some embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it also includes a plurality of guide vanes 14 , which are arranged between the premixing chamber outer casing 1 and the flame tube outer casing 2 , and the plurality of guide vanes 14 are arranged in sequence along the circumferential direction of the flame tube outer casing 2 .

[0049] It should be noted that a plurality of guide vanes 14 are provided between the second premixing chamber outer casing 102 and the flame tube outer casing 2 , so that the above-mentioned gap 15 can be formed between the second premixing chamber outer casing 102 and the flame tube outer casing 2 under the isolation effect of the guide vanes 14 .

[0050] In some embodiments, Figure 6 and Figure 7 As shown, the microtube 3 includes a first tube body 31 and a second tube body 32. The first tube body 31 is provided with a first air inlet and an injection port 311 relative to each other. The end of the first tube body 31 provided with the injection port 311 is inserted into the second tube body 32. The outer side surface of the second tube body 32 is provided with a second air inlet 321. The end of the second tube body 32 away from the injection port 311 is provided with an air outlet 322.

[0051] like Figure 6 and Figure 7 As shown, the diameter of the second air inlet 321 is 0.2~1.0D, and the cross-sectional shape of the second air inlet 321 can be circular, wherein D is the inner diameter of the microtube 3, for example, D is the inner diameter of the second tube body 32 or the average value of the sum of the inner diameter of the first tube body 31 and the inner diameter of the second tube body 32.

[0052] In addition, when there are multiple second air inlets 321 , the sum of the geometric areas of the multiple second air inlets 321 is 0.5 to 1.5 times the area of ​​the microtube 3 channel.

[0053] In addition, multiple rows of second air inlets 321 are arranged along the length direction of the second tube body 32 , and the number of second air inlets 321 in each row is 2 to 6. For example, 1 to 4 rows of second air inlets 321 are arranged along the length direction of the second tube body 32 .

[0054] In some embodiments, Figure 6 and Figure 7 As shown, the diameter of the injection port 311 is 0.5-2 mm. Exemplarily, the diameter of the injection port 311 is 0.5 mm, 1 mm or 2 mm.

[0055] The air outlet 322 is a contraction-shaped air outlet 322. That is, the contraction design at the outlet of the micro-tube 3 can avoid tempering.

[0056] As can be seen from the above, the array microtube premixed and graded hydrogen fuel combustion chamber of the embodiment of the present invention adopts a spiral arrangement structure of the array microtubes 3, hydrogen and oxygen are synchronously graded, and can be divided into multiple working areas according to the actual working range requirements, so as to achieve high combustion efficiency in a wide range and reduce NOx emissions in the combustion chamber; the effective area of ​​the pre-combustion stage is about 2-5 times that of a single microtube 3, which meets the flow field characteristics required for ignition at a lower hydrogen fuel flow rate and broadens the ignition range; a contraction design is adopted at the outlet of the single microtube 3 to avoid backfire under the premise of sufficient combustion; the overall array microtube 3 adopts a circumferentially uneven spiral arrangement to avoid flame collision while suppressing the combustion instability of hydrogen fuel.

[0057] 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 array microtube premixed staged hydrogen fuel combustion chamber, characterized in that: include: A micro-tube, a first feed pipe, a second feed pipe, an outer casing of a premixing chamber, and an outer casing of a flame tube; The premixing chamber outer casing is sleeved on the outer side surface of the flame tube outer casing, and a gap suitable for the working medium to enter is left between the premixing chamber outer casing and the flame tube outer casing. A premixing chamber is arranged in the premixing chamber outer casing, and a plurality of microtubes are arranged side by side in the premixing chamber and extend into the flame tube outer casing; the microtube has a first air inlet and an air outlet arranged opposite to each other, and a second air inlet is arranged on the outer side surface of the microtube, the first feed pipe is connected to the first air inlet, and the second feed pipe and the gap are both connected to the second air inlet.

2. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 1, characterized in that: The multiple microtubes are divided into multiple mutually isolated microtube groups by separators, the first feed pipe includes multiple first branch feed pipes, each of the first branch feed pipes corresponds one-to-one to each of the microtube groups, and the second feed pipe includes multiple second branch feed pipes, each of the second branch feed pipes corresponds one-to-one to each of the microtube groups.

3. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 2, characterized in that: The partition comprises a shell and a partition plate, the shell is arranged in the premixing chamber, the shell comprises a top wall and a side wall, one side of the partition plate is connected to the top wall, the extension direction of the partition plate is the same as the extension direction of the side wall, the partition plate divides the interior of the shell into a plurality of isolated installation chambers, and each installation chamber is provided with a group of the microtube groups.

4. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 3, characterized in that: The partition also includes a mounting plate, which is arranged on the side wall and spaced relative to the top wall. The partition plate is arranged through the mounting plate, and the mounting plate divides each of the mounting cavities into a first air inlet cavity and a mixing cavity. The mounting plate is provided with a plurality of mounting holes, and each of the microtubes in each of the microtube groups is arranged in the corresponding mounting hole, and each of the first air inlets is connected to the corresponding first air inlet cavity; wherein each of the first branch feed pipes is connected to the corresponding first air inlet cavity, and each of the second branch feed pipes is connected to the corresponding mixing cavity.

5. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 4, characterized in that: The partition also includes a flow equalizer plate, which is arranged on the side wall and is spaced relative to the mounting plate. The partition plate passes through the flow equalizer plate. The flow equalizer plate divides each of the mixing chambers into a second air inlet chamber and a third air inlet chamber. The flow equalizer plate is provided with an air hole. The second air inlet chamber is connected to the third air inlet chamber through the air hole. Each of the second branch feed pipes is connected to the corresponding second air inlet chamber. Each of the microtubes in each of the microtube groups passes through the flow equalizer plate, and the second air inlet corresponds to the third air inlet chamber.

6. The array microtube premixed staged hydrogen fuel combustion chamber according to any one of claims 1 to 5, characterized in that: The plurality of microtubes are arranged in a plurality of rows in the circumferential direction, the microtubes in each row are arranged in a spiral, and the number of the microtubes in each row is different.

7. The array microtube premixed staged hydrogen fuel combustion chamber according to any one of claims 1 to 5, characterized in that: It also includes a plurality of guide vanes, which are arranged between the outer casing of the premixing chamber and the outer casing of the flame tube, and the plurality of guide vanes are arranged in sequence along the circumferential direction of the outer casing of the flame tube.

8. The array microtube premixed staged hydrogen fuel combustion chamber according to any one of claims 1 to 5, characterized in that: The microtube includes a first tube body and a second tube body, the first tube body is provided with a first air inlet and an injection port relative to each other, the end of the first tube body provided with the injection port is inserted into the second tube body, the outer side surface of the second tube body is provided with a second air inlet, and the end of the second tube body away from the injection port is provided with an air outlet.

9. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 8, characterized in that: The diameter of the second air inlet is 0.2-1.0D, wherein D is the inner diameter of the microtube; and / or, The sum of the geometric areas of the plurality of second air inlets is 0.5 to 1.5 times the area of ​​the microtube; and / or, A plurality of rows of the second air inlets are arranged along the length direction of the second tube body, and the number of the second air inlets in each row is 2 to 6.

10. The array microtube premixed staged hydrogen fuel combustion chamber according to claim 8, characterized in that: The diameter of the injection port is 0.5-2 mm; and / or, The air outlet is a contraction-shaped air outlet.

Images