Hydrogen burner

Abstract

The hydrogen combustor comprises a shell, a gas mixing mechanism, a first gas inlet assembly, a flame arrester, a combustion assembly and a second gas inlet assembly, the gas mixing mechanism is arranged in the shell and comprises a bottom shell, a premixing shell, a buffer assembly and a disturbance assembly, and the bottom shell is connected with the shell; the bottom shell, the premixing shell and the buffer assembly are communicated in sequence; the disturbance assembly is rotationally connected with the buffer assembly, and one end of the disturbance assembly extends into the premixing shell; one end of the first air inlet assembly penetrates through the shell and the premixing shell, and is arranged opposite to the disturbance assembly; the flame arrester is arranged between the gas mixing mechanism and the combustion assembly; the second air inlet assembly comprises an air inlet cover and a communicating assembly, and the air inlet cover is installed on the outer side of the combustion assembly. According to the hydrogen burner, by increasing the temperature of the mixed gas, the heat energy conversion efficiency is improved, meanwhile, the uniformity of gas mixing is optimized, and the combustion process tends to be more stable.

Description

Technical Field

[0001] This application relates to the technical field of burners, and particularly to a hydrogen burner. Background Art

[0002] The only product of hydrogen combustion is water vapor, without generating carbon dioxide, sulfur oxides or particulate pollutants. It is one of the key technologies to address climate change. In high-energy-consuming industries such as steel, chemical, and glass manufacturing, hydrogen burners can replace traditional fuels such as coal and natural gas, reduce carbon emissions in industrial processes, and promote the green transformation in the field of carbon emission reduction.

[0003] In related technologies, hydrogen and air are usually introduced into a hydrogen burner for premixing, and the formed mixed gas is combusted. However, due to the low density of hydrogen and its fast rising speed, the premixing time of hydrogen and air is short and the mixing is insufficient, resulting in an unstable combustion process. For example, the flame frequently flickers, and the temperature of the mixed gas is low, affecting the thermal energy conversion efficiency. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems in the above technologies to some extent.

[0005] To this end, an object of this application is to propose a hydrogen burner, which improves the thermal energy conversion efficiency by raising the temperature of the mixed gas, and at the same time optimizes the uniformity of gas mixing, making the combustion process more stable.

[0006] To achieve the above object, a hydrogen burner according to the first aspect embodiment of this application includes: a housing, a gas mixing mechanism, a first air inlet assembly, a flame arrester, a combustion assembly, and a second air inlet assembly. Among them, the gas mixing mechanism is arranged inside the housing, and the gas mixing mechanism includes a bottom shell, a premixing shell, a buffer assembly, and a perturbation assembly. Among them, the bottom shell is connected to the housing; the bottom shell, the premixing shell, and the buffer assembly are sequentially communicated; the perturbation assembly is rotationally connected to the buffer assembly, and one end of the perturbation assembly extends into the interior of the premixing shell; one end of the first air inlet assembly penetrates through the housing and the premixing shell and is arranged opposite to the perturbation assembly; the flame arrester is arranged between the gas mixing mechanism and the combustion assembly; the second air inlet assembly includes an air inlet cover and a communication assembly. Among them, the air inlet cover is installed outside the combustion assembly; one end of the communication assembly is communicated with the air inlet cover, the communication assembly is connected to the housing, and the other end of the communication assembly penetrates through the premixing shell and is arranged opposite to the perturbation assembly.

[0007] In addition, the hydrogen burner proposed according to the above embodiment of this application may further have the following additional technical features:

[0008] In an embodiment of the present application, the bottom shell is arranged in a conical structure, and a plurality of grooves are provided on the premixing shell, and the plurality of grooves are respectively communicated with the bottom shell and the buffer assembly.

[0009] In an embodiment of the present application, the buffer assembly includes a communication shell and a top cover. Among them, the communication shell is communicated with the premixing shell; the top cover is arranged inside the communication shell, the top cover is arranged in an inverted conical structure, and a plurality of ventilation holes are opened on the outer wall of the top cover.

[0010] In an embodiment of the present application, the disturbance assembly includes a rod body and a plurality of spoiler blades. Among them, one end of the rod body is rotatably connected to the top cover, and the plurality of spoiler blades are respectively arranged on the outer side of the rod body.

[0011] In an embodiment of the present application, the first air intake assembly includes a first air pipe, a second air pipe and a flow valve. Among them, one end of the first air pipe penetrates through the outer shell and the outer wall of the premixing shell, and the end of the first air pipe is arranged in an arc structure; the second air pipe is communicated with the first air pipe; the flow valve is installed on the first air pipe.

[0012] In an embodiment of the present application, the combustion assembly includes a windproof cover, a combustion tray and an electronic igniter. Among them, the windproof cover is arranged outside the combustion tray, and the combustion tray is installed above the flame arrester; the electronic igniter is installed at the bottom of the combustion tray.

[0013] In an embodiment of the present application, a plurality of inclined air intake grooves are opened on the air intake cover.

[0014] In an embodiment of the present application, the communication assembly includes a pipe body, a power pump and a serpentine pipe. Among them, the power pump is installed on the outer shell; one end of the pipe body is communicated with the air intake cover, and the other end of the pipe body is communicated with the power pump; the serpentine pipe is wound around the outside of the buffer assembly and the premixing shell, one end of the serpentine pipe is communicated with the power pump, and the other end of the serpentine pipe penetrates through the premixing shell and is arranged opposite to the disturbance assembly.

[0015] In an embodiment of the present application, a fixing plate is arranged at the bottom of the outer shell, and through holes are opened on the fixing plate.

[0016] Compared with the prior art, the technical solution provided by this application has the following beneficial effects: In the hydrogen burner according to the embodiments of this application, by obtaining relatively hot air near the combustion assembly and introducing the air and hydrogen into the interior of the premixing housing respectively, a combustible mixture with a high temperature is obtained, improving the conversion efficiency of thermal energy. Under the action of the disturbance assembly, the air and hydrogen are mixed for the first time. The mixture moves downward and impacts the bottom housing for secondary mixing, and then rises along the inner walls of the bottom housing and the premixing housing to enter the interior of the buffer assembly for further mixing. This multiple mixing method enables the mixture to be fully mixed, and the high-temperature environment can also shorten the ignition delay time, further ensuring the stability of combustion.

[0017] Additional aspects and advantages of this application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of this application. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of this application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0019] Figure 1 is a three-dimensional structural schematic diagram of a hydrogen burner according to an embodiment of this application;

[0020] Figure 2 is a partial internal structural schematic diagram of a hydrogen burner according to an embodiment of this application;

[0021] Figure 3 is an internal structural schematic diagram of the housing of a hydrogen burner according to an embodiment of this application;

[0022] Figure 4 is a partial three-dimensional structural schematic diagram of a hydrogen burner according to an embodiment of this application.

[0023] Reference Numerals: 1, housing; 2, gas mixing mechanism; 21, bottom housing; 22, premixing housing; 220, tank; 23, buffer assembly; 231, connecting housing; 232, top cover; 233, ventilation hole; 24, disturbance assembly; 241, rod body; 242, spoiler blade; 3, first air intake assembly; 31, first air pipe; 32, second air pipe; 33, flow valve; 4, flame arrester; 5, combustion assembly; 51, wind guard; 52, combustion tray; 53, electronic igniter; 6, second air intake assembly; 61, air intake cover; 610, air intake groove; 62, connecting assembly; 621, pipe body; 622, power pump; 623, serpentine pipe; 71, fixing plate; 72, through hole. Detailed Description of the Embodiments

[0024] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0025] The hydrogen burner according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0026] As Figures 1 - 4 shown, the hydrogen burner according to an embodiment of the present application may include: a housing 1, a gas mixing mechanism 2, a first intake assembly 3, a flame arrester 4, a combustion assembly 5, and a second intake assembly 6.

[0027] Among them, the gas mixing mechanism 2 is arranged inside the housing 1, and the gas mixing mechanism 2 includes a bottom shell 21, a premixing shell 22, a buffer assembly 23, and a disturbance assembly 24.

[0028] Among them, the bottom shell 21 is connected to the housing 1.

[0029] It should be noted that the bottom shell 21 and the housing 1 are connected by a bracket.

[0030] The bottom shell 21, the premixing shell 22, and the buffer assembly 23 are connected in sequence. The disturbance assembly 24 is rotatably connected to the buffer assembly 23. One end of the disturbance assembly 24 extends into the interior of the premixing shell 22. One end of the first intake assembly 3 penetrates through the housing 1 and the premixing shell 22 and is arranged opposite to the disturbance assembly 24.

[0031] The first intake assembly 3 is used to supply a preset amount of hydrogen and inert gas into the interior of the premixing shell 22; the disturbance assembly 24 is used to agitate the high-temperature air, hydrogen, and inert gas and blow the mixed gas towards the bottom shell 21; the bottom shell 21 is used to receive the mixed gas for secondary mixing; the buffer assembly 23 is used to remix the mixed gas and also used for heat transfer with the connection assembly 62.

[0032] The flame arrester 4 is arranged between the gas mixing mechanism 2 and the combustion assembly 5.

[0033] It should be noted that the flame arrester 4 is a prior art. Models such as detonation arrestor (FW-2 type) or JZH jacketed heat-insulating flame arrester can be selected. Its specific working principle has been disclosed in the prior art, so it will not be elaborated in detail here.

[0034] The second intake assembly 6 includes an intake hood 61 and a connection assembly 62.

[0035] Among them, the air intake hood 61 is installed outside the combustion assembly 5. One end of the connecting assembly 62 is communicated with the air intake hood 61. The connecting assembly 62 is connected to the outer shell 1. The other end of the connecting assembly 62 penetrates through the premixing shell 22 and is arranged opposite to the disturbing assembly 24.

[0036] It should be noted that this hydrogen burner can be used in glass and ceramic manufacturing, chemical production and transportation.

[0037] Specifically, install this device at a preset position (which can be determined according to the actual situation). Connect the other end of the first air intake assembly 3 to an external hydrogen storage device. The external commercial power supplies the connecting assembly 62 in this device, and the combustion assembly 5 is connected to an external control device.

[0038] During the operation of this hydrogen burner, the mixture composed of hydrogen and inert gas enters the interior of the premixing shell 22 according to a preset flow rate. At the same time, due to the continuous combustion of the flame near the combustion assembly 5, the air temperature around it is relatively high. After the air surges into the air intake hood 61, heat transfer occurs between the air and the combustion assembly 5, and the temperature of the air rises. Then it enters the interior of the premixing shell 22 through the connecting assembly 62, so that a mixture with a relatively high temperature can be obtained, ultimately improving the conversion efficiency of thermal energy.

[0039] The air and the mixture composed of hydrogen and inert gas jointly impact the disturbing assembly 24 to form a primary mixture. Under the action of the disturbing assembly 24, the primary mixture moves downward and impacts the bottom shell 21. Under the action of the bottom shell 21, secondary mixing occurs. Then the mixture moves upward and enters the interior of the buffer assembly 23. When the mixture passes through the buffer assembly 23, on the one hand, the mixture can be mixed again, and on the other hand, the buffer assembly 23 can conduct heat transfer with the connecting assembly 62, further increasing the heat of the mixture.

[0040] The mixture passes through the flame arrester 4 and reaches the combustion assembly 5 to form a stable combustion flame. This multiple mixing method enables the mixture to be fully mixed, and the high-temperature environment can also shorten the ignition delay time, ensuring the stability of combustion.

[0041] In an embodiment of the present application, as Figure 2 shown, the bottom shell 21 is arranged in a conical structure. The premixing shell 22 is provided with a plurality of grooves 220, and the plurality of grooves 220 are respectively communicated with the bottom shell 21 and the buffer assembly 23.

[0042] It can be understood that setting the bottom shell 21 into a conical structure can enable the mixture to rise along the inclined surface of the bottom shell 21 after impacting the bottom of the bottom shell 21, ensuring that it enters the interior of the buffer assembly 23 through the plurality of grooves 220 and reducing the mutual influence between the rising mixture and the descending mixture.

[0043] In an embodiment of the present application, asFigure 2 As shown, the buffer assembly 23 includes a connecting shell 231 and a top cover 232.

[0044] Among them, the connecting shell 231 is connected to the premixing shell 22, the top cover 232 is arranged inside the connecting shell 231, the top cover 232 is arranged in an inverted conical structure, and a plurality of ventilation holes 233 are formed on the outer wall of the top cover 232.

[0045] In the above embodiment, the top cover 232 arranged in an inverted conical structure can agglomerate and mix the mixed gas. After passing through the plurality of ventilation holes 233, the mixed gas enters the inside of the connecting shell 231 in a multi-point dispersed state. Heat transfer occurs between the connecting component 62 and the connecting shell 231. The temperature of the connecting shell 231 is higher than that of the mixed gas, which can further increase the temperature of the mixed gas.

[0046] In an embodiment of the present application, as Figure 2 shown, the disturbance assembly 24 includes a rod body 241 and a plurality of spoiler vanes 242.

[0047] Among them, one end of the rod body 241 is rotatably connected to the top cover 232, and the plurality of spoiler vanes 242 are respectively arranged outside the rod body 241.

[0048] In the above embodiment, after the airflow impacts the spoiler vanes 242, the spoiler vanes 242 rotate rapidly and blow the mixed gas nearby downward.

[0049] In an embodiment of the present application, the structural surface in the gas mixing mechanism 2 can be coated with a high-temperature resistant ceramic material to prevent the high temperature for a long time from affecting the operation of the device.

[0050] In an embodiment of the present application, as Figure 4 shown, the first intake component 3 includes a first air pipe 31, a second air pipe 32, and a flow valve 33.

[0051] Among them, one end of the first air pipe 31 penetrates through the outer walls of the housing 1 and the premixing shell 22, the end of the first air pipe 31 is arranged in an arc structure, the second air pipe 32 is connected to the first air pipe 31, and the flow valve 33 is installed on the first air pipe 31.

[0052] In the above embodiment, the other end of the first air pipe 31 can be connected to an external hydrogen storage device, and the other end of the second air pipe 32 can be connected to an external inert gas (for example: argon) storage device. The flow valve 33 can be connected to an external control device, and the flow rate of hydrogen can be adjusted by adjusting the flow valve 33, so that the hydrogen burner can be used safely on the premise of high utilization rate.

[0053] In an embodiment of the present application, as Figure 2 shown, the combustion component 5 includes a wind guard 51, a combustion tray 52, and an electronic igniter 53.

[0054] Among them, the wind shield 51 is arranged outside the combustion tray 52. The combustion tray 52 is installed above the flame arrester 4, and the electronic igniter 53 is installed at the bottom of the combustion tray 52.

[0055] In the above embodiment, the wind shield 51 can play a role in assisting flame stabilization, and the electronic igniter 53 can play a role in ignition when the hydrogen burner is ignited.

[0056] In an embodiment of the present application, as Figure 4 shown, a plurality of inclined air inlet grooves 610 are formed in the air inlet hood 61.

[0057] It should be noted that the air inlet grooves 610 described in this embodiment are arranged inclined upward, which can ensure that the air impacts the outer wall of the combustion tray 52 after entering the air inlet hood 61, thereby taking away part of the heat on the outer wall of the combustion tray 52 to obtain air with a higher temperature.

[0058] In an embodiment of the present application, as Figure 3 shown, the connection assembly 62 includes a pipe body 621, a power pump 622 and a serpentine pipe 623.

[0059] Among them, the power pump 622 is installed on the outer shell 1. One end of the pipe body 621 is communicated with the air inlet hood 61, and the other end of the pipe body 621 is communicated with the power pump 622. The serpentine pipe 623 is wound around the outside of the buffer assembly 23 and the premixing shell 22. One end of the serpentine pipe 623 is communicated with the power pump 622, and the other end of the serpentine pipe 623 penetrates through the premixing shell 22 and is arranged opposite to the disturbance assembly 24.

[0060] In the above embodiment, the main body part of the power pump 622 is located on the outer wall of the outer shell 1. An impeller (not shown in the figure) is provided at the output end of the power pump 622, and the surface of the impeller is coated with a high-temperature resistant ceramic material to ensure the service life of the impeller.

[0061] Specifically, the air with a certain amount of heat enters the inside of the serpentine pipe 623 through the pipe body 621 under the action of the power pump 622. Heat transfer occurs between the serpentine pipe 623 and the connection shell 231, so that the temperature of the connection shell 231 rises, and the hot air enters the inside of the premixing shell 22 through the serpentine pipe 623 to form a mixed gas.

[0062] It should be noted that heat insulation materials can be bonded to the inner wall of the outer shell 1 to reduce heat loss of the air during transmission.

[0063] In an embodiment of the present application, as Figure 1 shown, a fixing plate 71 is provided at the bottom of the outer shell 1, and through holes 72 are formed in the fixing plate 71.

[0064] Specifically, when installing the hydrogen burner of the present application, relevant technicians can use a fixing member (e.g., a bolt) to pass through the through-hole 72, and install the hydrogen burner of the present application at a preset position (which can be determined according to actual application situations) or connect it to other devices through the fixing plate 71.

[0065] In summary, for the hydrogen burner of the embodiment of the present application, by obtaining relatively hot air near the combustion assembly, introducing the air and hydrogen into the interior of the premixing shell respectively, a combustible mixture with high temperature is obtained, improving the conversion efficiency of thermal energy. Under the action of the disturbing assembly, the air and hydrogen are mixed for the first time, the mixture moves downward and impacts the bottom shell for secondary mixing, and then rises along the inner walls of the bottom shell and the premixing shell to enter the interior of the buffer assembly for further mixing. This multiple mixing method enables the mixture to be fully mixed, and the high-temperature environment can also shorten the ignition delay time, further ensuring the stability of combustion.

[0066] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A hydrogen burner, characterized in that: include: housing, a gas mixing mechanism, a first air intake assembly, a flame arrester, a combustion assembly, and a second air intake assembly, wherein: The gas mixing mechanism is arranged inside the housing, and comprises a bottom shell, a premixing shell, a buffer component and a disturbance component, wherein: The bottom shell is connected to the outer shell; The bottom shell, the premixing shell and the buffer assembly are connected in sequence; The disturbance component is rotatably connected to the buffer component, and one end of the disturbance component extends to the interior of the premixing shell; One end of the first air inlet assembly passes through the outer shell and the premixing shell, and is arranged opposite to the disturbance assembly; The flame arrester is arranged between the gas mixing mechanism and the combustion assembly; The second air intake assembly includes an air intake cover and a connecting assembly, wherein: The air intake hood is installed on the outside of the combustion assembly; One end of the communication component is communicated with the air inlet hood, the communication component is connected to the outer shell, and the other end of the communication component passes through the premixing shell and is arranged opposite to the disturbance component.

2. The hydrogen burner according to claim 1, characterized in that: The bottom shell is arranged in a conical structure, and a plurality of slots are arranged on the premixing shell, and the plurality of slots are respectively communicated with the bottom shell and the buffer assembly.

3. The hydrogen burner according to claim 1, characterized in that: The buffer assembly includes a connecting shell and a top cover, wherein: The communication shell is in communication with the premixing shell; The top cover is arranged inside the communicating shell, the top cover is arranged in an inverted cone structure, and a plurality of ventilation holes are opened on the outer wall of the top cover.

4. The hydrogen burner according to claim 3, characterized in that: The disturbance component includes a rod body and a plurality of spoiler blades, wherein: One end of the rod body is rotatably connected to the top cover, and a plurality of spoiler blades are respectively arranged on the outside of the rod body.

5. The hydrogen burner according to claim 1, characterized in that: The first air intake assembly includes a first air pipe, a second air pipe and a flow valve, wherein: One end of the first air pipe penetrates the outer shell and the outer wall of the premixing shell, and the end of the first air pipe is arranged in an arc-shaped structure; The second air pipe is in communication with the first air pipe; The flow valve is installed on the first air pipe.

6. The hydrogen burner according to claim 1, characterized in that: The combustion assembly includes a wind shield, a combustion disk and an electronic igniter, wherein: The wind shield is arranged on the outside of the combustion disk, and the combustion disk is installed above the flame arrester; The electronic igniter is mounted on the bottom of the combustion disk.

7. The hydrogen burner according to claim 1, characterized in that: The air intake hood is provided with a plurality of obliquely arranged air intake slots.

8. The hydrogen burner according to claim 1, characterized in that: The connecting component includes a pipe body, a power pump and a serpentine pipe, wherein: The power pump is mounted on the housing; One end of the tube body is in communication with the air intake hood, and the other end of the tube body is in communication with the power pump; The serpentine tube is wound around the outside of the buffer assembly and the premixing shell, one end of the serpentine tube is connected to the power pump, and the other end of the serpentine tube passes through the premixing shell and is arranged opposite to the disturbance assembly.

9. The hydrogen burner according to claim 1, characterized in that: A fixing plate is arranged at the bottom of the shell, and a through hole is opened on the fixing plate.

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