Hydrogen production device

Abstract

The utility model provides a hydrogen production device, and belongs to the technical field of electrolytic hydrogen production. The hydrogen production device comprises a connecting pipe assembly and a supporting piece, one end of the connecting pipe assembly is connected to the gas-liquid separation assembly, the other end is connected to the electrolytic cell assembly, one end of the supporting piece is fixed to the bottom plate, and the other end is fixedly connected with the connecting pipe assembly. Compared with the prior art, the supporting strength of the pipeline in the hydrogen production system can be improved, the local part of the pipeline is prevented from being subjected to overlarge stress, the risk of pipeline deformation and damage is reduced, and the stability and safety of the hydrogen production system are improved.

Description

Technical Field

[0001] This application relates to the field of hydrogen production by electrolysis, specifically to a hydrogen production device. Background Technology

[0002] The rapidly growing demand for green hydrogen necessitates the development of large-scale systems. Large-scale hydrogen production systems typically require multiple hydrogen production components, which are usually connected to each other via pipelines. In related technologies, the pipeline support strength in hydrogen production systems is insufficient, leading to excessive local stress on the pipelines, increasing the risk of pipeline deformation and damage, and affecting the stability and safety of the system. Utility Model Content

[0003] The embodiments of this application provide a hydrogen production device that can improve the technical problem of insufficient pipeline support strength in hydrogen production devices.

[0004] A housing, the housing comprising a base plate and a frame, the frame being mounted on the base plate and forming a receiving space with the base plate;

[0005] A gas-liquid separation assembly is installed in the accommodating space;

[0006] An electrolytic cell assembly, wherein the electrolytic cell assembly is disposed at an interval from the gas-liquid separation assembly;

[0007] A connecting pipe assembly, one end of which is connected to the gas-liquid separation assembly, and the other end of which is connected to the electrolytic cell assembly;

[0008] A support member, one end of which is fixed to the base plate, and the other end of which is fixedly connected to the connecting pipe assembly.

[0009] In some embodiments, the electrolytic cell assembly is located outside the containment space;

[0010] The connecting pipe assembly is at least partially located within the receiving space, the support member is located within the receiving space, and the other end of the support member is fixedly connected to the connecting pipe assembly.

[0011] In some embodiments, the gas-liquid separation component is spaced apart from the base plate, and the connecting pipe assembly is disposed between the base plate and the gas-liquid separation component;

[0012] The connecting pipe assembly includes a first connecting portion and a second connecting portion. The first connecting portion extends along a first direction, and the second connecting portion extends at least partially along a second direction. One end of the first connecting portion away from the base plate is connected to the gas-liquid separation assembly, and the other end of the first connecting portion near the base plate is connected to the second connecting portion. The other end of the support member is fixedly connected to the second connecting portion. The first direction and the second direction intersect.

[0013] In some embodiments, the connecting pipe assembly includes a main connecting pipe and a plurality of branch connecting pipes. The main connecting pipe is partially located at the first connecting portion and partially located at the second connecting portion. The plurality of branch connecting pipes are connected to the main connecting pipe located at the second connecting portion. Each branch connecting pipe extends at least partially outward from the receiving space and is connected to the electrolytic cell assembly. The other end of the support is fixedly connected to the main connecting pipe at the second connecting portion.

[0014] In some embodiments, the connecting pipe assembly includes a plurality of main connecting pipes, the hydrogen production device includes a plurality of support members, the electrolyzer assembly includes a plurality of electrolyzers, each electrolyzer has a connection port at a different height, each main connecting pipe located at the second connection portion has a different distance from the bottom plate to correspond to the connection port, and each support member is fixedly connected to a main connecting pipe located at the second connection portion.

[0015] In some embodiments, the connecting pipe assembly further includes a plurality of temperature transmitters, each of the temperature transmitters being mounted on a main connecting pipe, and each of the support members being fixedly connected to one of the temperature transmitters.

[0016] In some embodiments, the main connecting pipe includes a first section and a second section spaced apart, the temperature transmitter includes an instrument assembly and a connecting section, the connecting section is installed between the first section and the second section, the instrument assembly is fixed to the connecting section and at least partially extends into the connecting section to measure temperature, and the support is fixedly connected to the side of the connecting section opposite to the instrument assembly.

[0017] In some embodiments, the support includes a first plate and two opposing second plates, the first plate extending along a first direction, each second plate being perpendicular to the first plate, the first plate being connected between the two second plates, one second plate being fixed to the base plate, and the other second plate being fixed to the side of the connecting section away from the instrument assembly.

[0018] In some embodiments, the temperature transmitter further includes a fixing member and two clamps. Each clamp includes a body and a fixing part connected to each other. The two bodies are clamped opposite to each other on both sides of the connecting section along a first direction. Each fixing part protrudes along a direction parallel to the second plate and is provided with a first opening. The first openings of the two fixing parts are arranged opposite to each other.

[0019] The second plate has a corresponding second opening, and the fastener passes through the two first openings and is fixedly connected to the second opening to fix the second plate and the connecting section.

[0020] In some embodiments, the electrolytic cell assembly includes a plurality of electrolytic cells arranged side by side along a third direction, each of the main connecting pipes connecting to a plurality of the sub-connecting pipes, the plurality of sub-connecting pipes extending along a second direction and / or a third direction and connected to each of the electrolytic cells, the second direction and the third direction intersecting.

[0021] In some embodiments, the multiple electrolytic cells have the same height along the first direction.

[0022] In some embodiments, the plurality of connection ports include an alkali inlet and a gas outlet. Each electrolytic cell is provided with two alkali inlets and two gas outlets. The gas outlets are located at the top of the alkali inlets along a first direction. Each alkali inlet and each gas outlet are respectively connected to one of the branch connection pipes.

[0023] The beneficial effects of the embodiments of this application are as follows:

[0024] This application provides a hydrogen production device, which includes a connecting pipe assembly and a support component. One end of the connecting pipe assembly is connected to a gas-liquid separation component, and the other end is connected to an electrolyzer component. One end of the support component is fixed to a base plate, and the other end is fixedly connected to the connecting pipe assembly. Compared with related technologies, this method can increase the pipe support strength in the hydrogen production system, avoid excessive local stress on the pipes, reduce the risk of pipe deformation and damage, and improve the stability and safety of the hydrogen production system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the hydrogen production apparatus provided in the embodiments of this application. Figure 1 ;

[0027] Figure 2 yes Figure 1 The schematic diagram of the hydrogen production device shown Figure 2 ;

[0028] Figure 3 yes Figure 1 An enlarged schematic diagram of part A of the hydrogen production unit shown;

[0029] Figure 4 yes Figure 1 The schematic diagram of the hydrogen production device shown Figure 3 ;

[0030] Figure 5 yes Figure 1 The side view of the electrolytic cell shown.

[0031] Figure label:

[0032] 100. Hydrogen production equipment;

[0033] 10. Shell; 101. Accommodation space; 11. Base plate; 12. Frame;

[0034] 20. Gas-liquid separation assembly; 21. Gas-liquid separation tank;

[0035] 30. Electrolytic cell assembly; 31. Electrolytic cell; 311. Oxygen outlet; 312. Hydrogen outlet; 313. Oxygen-side alkaline solution inlet; 314. Hydrogen-side alkaline solution inlet;

[0036] 40. Connecting pipe assembly; 41. First connecting part; 42. Second connecting part; 43. Main connecting pipe; 44. Branch connecting pipe; 441. Oxygen inlet; 442. Hydrogen inlet; 443. Oxygen-side alkaline solution outlet; 444. Hydrogen-side alkaline solution outlet; 45. Temperature transmitter; 451. Instrument assembly; 452. Connecting section; 453. Connecting structure; 454. Clamp; 46. Adapter;

[0037] 50. Supporting component; 51. First plate; 52. Second plate;

[0038] 60. Heat exchanger assembly; 61. Plate heat exchanger; 62. Shell-and-tube heat exchanger;

[0039] 70. Magnetic shielded pump;

[0040] 80. Filter. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0042] Please refer to Figures 1-2 , Figure 1 This is a schematic diagram of the hydrogen production apparatus provided in the embodiments of this application. Figure 1 , Figure 2 yes Figure 1 The schematic diagram of the hydrogen production device shown Figure 2 This application provides a hydrogen production device 100, which includes a housing 10, a gas-liquid separation component 20, and an electrolyzer assembly 30. The housing 10 includes a base plate 11 and a frame 12. The frame 12 is mounted on the base plate 11 and forms a receiving space 101 with the base plate 11. The gas-liquid separation component 20 is mounted in the receiving space 101. The electrolyzer assembly 30 is spaced apart from the gas-liquid separation component 20. The hydrogen production device 100 also includes a connecting pipe assembly 40 and a support member 50. One end of the connecting pipe assembly 40 is connected to the gas-liquid separation component 20, and the other end of the connecting pipe assembly 40 is connected to the electrolyzer assembly 30. One end of the support member 50 is fixed to the base plate 11, and the other end of the support member 50 is fixedly connected to the connecting pipe assembly 40.

[0043] Understandably, one end of the connecting pipe assembly 40 is connected to the gas-liquid separation assembly 20, and the other end is connected to the electrolyzer assembly 30. One end of the support member 50 is fixed to the base plate 11, and the other end is fixedly connected to the connecting pipe assembly 40. Compared with related technologies, the support member 50 can increase the support strength of the connecting pipe in the hydrogen production device 100, avoid excessive local stress on the pipeline, reduce the risk of pipeline deformation and damage, and improve the stability and safety of the hydrogen production system.

[0044] In some examples, the electrolyzer assembly 30 can be an AEM electrolyzer, which is a device that uses anion exchange membrane technology to electrolyze water. Hydrogen produced by an AEM electrolyzer has advantages such as high purity and low impurities, and exhibits a high current density under rated operating conditions.

[0045] In some cases, the electrolyzer assembly 30 decomposes water into hydrogen and oxygen under the action of an electric current. The alkaline solution in the electrolyzer assembly 30 may be carried out with the gas flow and enter pipelines or other equipment, potentially causing corrosion, damage, or obstructing gas flow. The gas-liquid separation assembly 20 is used to prevent the mixing of gas and liquid. The gas-liquid separation assembly 20 includes two gas-liquid separation tanks 21, respectively for the gas-liquid separation of hydrogen and oxygen, arranged side-by-side in a horizontal direction.

[0046] In some examples, the support 50 can be a sheet metal part. The material of the sheet metal part can be metal sheet, such as cold-rolled steel, stainless steel, aluminum-copper alloy, etc. It has low manufacturing cost, flexible processing and high structural strength, and has a good supporting effect.

[0047] In some examples, the connecting pipe in the connecting pipe assembly 40 can be a metal bellows, which consists of multiple corrugations and is typically made of stainless steel or other corrosion-resistant alloy materials. The shape of the corrugations can be uniform annular or spiral. Bellows have strong extensibility and pressure resistance, and play a role in sealing, shock absorption, and compensation in liquid and gas transportation and mechanical devices.

[0048] In some cases, the connecting pipe in the connecting pipe assembly 40 can be made of 316L stainless steel because 316L stainless steel has good mechanical properties, good strength and alkali resistance at high temperatures.

[0049] In some embodiments, the electrolytic cell assembly 30 is located outside the receiving space 101, the connecting pipe assembly 40 is at least partially located inside the receiving space 101, the support member 50 is located inside the receiving space 101, and the other end of the support member 50 is fixedly connected to the connecting pipe assembly 40.

[0050] Understandably, in related technologies, integrating the electrolyzer assembly 30 with the gas-liquid separation assembly 20 greatly increases the volume of the hydrogen production system. In this application, the electrolyzer assembly 30 is placed externally on the housing 10, which can reduce the volume of the hydrogen production device 100 and reduce the load pressure on the bottom plate 11. At the same time, the externally placed electrolyzer assembly 30 can also increase the accommodating space 101 and reduce the operational difficulty of connecting the connecting pipe assembly 40 and the electrolyzer assembly 30.

[0051] In some embodiments, the gas-liquid separation assembly 20 is spaced apart from the base plate 11, and the connecting pipe assembly 40 is disposed between the base plate 11 and the gas-liquid separation assembly 20. The connecting pipe assembly 40 includes a first connecting portion 41 and a second connecting portion 42. The first connecting portion 41 extends along a first direction, and the second connecting portion 42 extends at least partially along a second direction. One end of the first connecting portion 41 away from the base plate 11 is connected to the gas-liquid separation assembly 20, and the other end near the base plate 11 is connected to the second connecting portion 42. The other end of the support member 50 is fixedly connected to the second connecting portion 42, and the first direction and the second direction intersect.

[0052] Specifically, the distance between the electrolytic cell assembly 30 and the plane of the base plate 11 is less than the distance between the gas-liquid separation assembly 20 and the plane of the base plate 11. The electrolytic cell assembly 30 is located at the bottom of the gas-liquid separation assembly 20. The first connecting part 41 extends in a first direction and connects to the gas-liquid separation assembly 20, and the second connecting part 42 extends in a second direction and connects to the electrolytic cell assembly 30. The first direction can be the height direction of the frame 12, and the second direction can be the horizontal direction of the frame 12. The first direction and the second direction are perpendicular.

[0053] Understandably, the second connecting part 42 is closer to the base plate 11 than the first connecting part 41. Compared to connecting to the first connecting part 41, connecting the support member 50 to the second connecting part 42 can reduce the extension height of the support member 50, thereby reducing the weight and manufacturing cost of the support member 50.

[0054] In some embodiments, the connecting pipe assembly 40 includes a main connecting pipe 43 and a plurality of branch connecting pipes 44. The main connecting pipe 43 is partially located in the first connecting portion 41 and partially located in the second connecting portion 42. The plurality of branch connecting pipes 44 are connected to the main connecting pipe 43 located in the second connecting portion 42. Each branch connecting pipe 44 is at least partially located outside the receiving space 101 and connected to the electrolytic cell assembly 30. The support member 50 is connected between the main connecting pipe 43 located in the second connecting portion 42 and the base plate 11.

[0055] Specifically, the branch connecting pipe 44 is used to expand the connection width of the connecting pipe assembly 40. The branch connecting pipe 44 is partially located inside the receiving space 101 and partially located outside the receiving space 101 to connect to the electrolyzer assembly 30. Compared to the support member 50 being fixedly connected to the branch connecting pipe 44, fixing the support member 50 to the main connecting pipe 43 can reduce the number of support members 50 and further reduce the weight of the hydrogen production device 100.

[0056] In some embodiments, the connecting pipe assembly 40 includes a plurality of main connecting pipes 43, the hydrogen production device 100 includes a plurality of support members 50, the electrolyzer assembly 30 includes a plurality of electrolyzers 31, the electrolyzer assembly 30 is provided with a plurality of connection ports at different heights, each of the main connecting pipes 43 located in the second connecting part 42 has a different distance from the bottom plate 11 to correspond to the connection port, and each of the support members 50 is fixedly connected to a main connecting pipe 43 located in the second connecting part 42.

[0057] Understandably, in order to accommodate the different height positions of the connection ports and avoid pipe conflicts, it is necessary to install main connection pipes 43 and branch connection pipes 44 at different heights, and to install support members 50 at different heights to support the main connection pipe 43.

[0058] Specifically, each of the main connecting pipes 43 can connect to multiple branch connecting pipes 44. Each main connecting pipe 43 and the multiple branch connecting pipes 44 connected to it form a pipe group. The connecting pipe assembly 40 includes multiple pipe groups, and the hydrogen production device 100 includes multiple support members 50. Each support member 50 is fixed to a pipe group. The connecting pipe assembly 40 includes multiple adapters 46, which are used to connect connecting pipes arranged in different directions. The adapters 46 can be straight pipe fittings, tee fittings, four-way fittings, bend fittings, etc., to expand the number of interfaces to match a larger number of electrolyzers 31.

[0059] Straight pipes can directly connect two pipe sections, allowing them to extend in a straight line, such as connecting pipes along a second direction. Tees are pipe fittings with three outlets, typically used at branching or intersection points. Tees come in various shapes, such as T-shaped and Y-shaped, and can connect three pipes, such as connecting pipes along a second and third direction. Four-way pipes are pipe fittings with four outlets, suitable for situations requiring the connection of four pipes to the same location. Four-way pipes come in various shapes, such as cross-shaped and intersecting, enabling pipe connections in more directions. Bends are used to divert liquid / gas flow by changing the direction of the pipe, such as turning the pipe 90° or 45°, to ensure smooth fluid transmission.

[0060] Please refer to Figure 3 , Figure 3 yes Figure 1The diagram shows an enlarged view of part A of the hydrogen production apparatus. In some embodiments, the connecting pipe assembly 40 further includes a plurality of temperature transmitters 45, each of which is an instrument assembly 451 that converts temperature variables into a transmittable, standardized output signal. The temperature transmitters 45 are mounted on the main connecting pipe 43 to detect and transmit temperature data. Each of the temperature transmitters 45 is mounted on one main connecting pipe 43, and each of the support members 50 is fixed to one of the temperature transmitters 45.

[0061] Understandably, in related technologies, the electrolytic cell assembly 30 is placed inside the accommodating space 101, resulting in a crowded internal space and complex piping layout, which is not conducive to the disassembly and maintenance of the temperature transmitter 45. However, in this application, the electrolytic cell assembly 30 is placed outside the frame 12, which makes it convenient to disassemble and assemble the temperature transmitter 45.

[0062] In addition, to accommodate the connection port position of the electrolytic cell 31, the height of the main connecting pipe 43 is not uniform, so the placement height of each temperature transmitter 45 is also different. By setting support members 50 of different heights, the support of the temperature transmitter 45 can be strengthened, thereby increasing the stability of the temperature transmitter 45 and ensuring the detection and transmission effect of temperature data by the temperature transmitter 45 on different pipelines.

[0063] In some embodiments, the main connecting pipe 43 includes a first section and a second section spaced apart, the temperature transmitter 45 includes an instrument assembly 451 and a connecting section 452, the connecting section 452 is installed between the first section and the second section, the instrument assembly 451 is fixed to the connecting section 452 and at least partially extends into the connecting section 452 to measure temperature, and the support member 50 is fixedly connected to the side of the connecting section 452 away from the instrument assembly 451.

[0064] Specifically, the first segment and the second segment form an interval. A temperature transmitter 45 is disposed within the interval and connected to the first segment and the second segment via a connecting structure 453. An instrument assembly 451 includes a temperature measuring structure that can extend into the connecting segment 452 to measure temperature. A sealing structure is provided between the instrument assembly 451 and the connecting segment. The instrument assembly 451 may also include a display screen to display the detected data.

[0065] In some examples, the connection structure 453 can be a flange, which is used to fix the connection section 452 of the temperature transmitter 45 to the main connection pipe 43. This can effectively reduce the load on the pipeline or equipment caused by vibration and prevent components from loosening or vibrating. In addition, the installation and docking of flanges are relatively simple and can meet the requirements of various shapes and sizes. Through standardized design, flanges can easily be compatible with the connection section 452 and the main connection pipe 43, reducing the complexity of installation.

[0066] In some embodiments, the support member 50 includes a first plate 51 and two opposing second plates 52. The first plate 51 extends along a first direction, and each second plate 52 is perpendicular to the first plate. The first plate 51 is connected between the two second plates 52. One second plate 52 is fixed to the base plate 11, and the other second plate 52 is fixed to the side of the connecting section 452 opposite to the instrument assembly 451.

[0067] Specifically, the first plate 51 extends along a first direction, and the second plate 52 can extend along a third direction or along a second direction. The first plate 51 and the second plate 52 together form a U-shaped structure. The second direction can be the length direction of the base plate 11, and the third direction can be the width direction of the base plate 11. The second direction and the third direction are perpendicular to each other in the same plane, and the first direction is perpendicular to the second direction and the third direction is perpendicular to the third direction.

[0068] Understandably, setting up a second plate 52 can increase the connection area and enhance the structural load-bearing capacity of the entire support 50, especially when subjected to external loads, thereby improving the overall stability and strength.

[0069] In some embodiments, the temperature transmitter 45 further includes a fixing member and two clamps 454. Each clamp 454 includes a body and a fixing part connected to each other. The two bodies are clamped opposite each other on both sides of the connecting section along a first direction. Each fixing part protrudes along a direction parallel to the second plate 52 and has a first opening. The first openings of the two fixing parts are opposite each other. The second plate 52 has a corresponding second opening. The fixing member passes through the two first openings and is fixedly connected to the second opening to fix the second plate 52 and the connecting section 452.

[0070] Understandably, the clamp 454 structure is easy to install, can be easily disassembled and reinstalled, and its arc-shaped structure can be adapted to the connecting section 452, reducing pipe damage or leakage caused by thermal expansion. Not limited to the clamp structure, the connecting section 452 and the second plate 52 can also be connected in other ways, which are not limited herein.

[0071] In some embodiments, the second plate 52 extends along a third direction, each of the fixing portions protrudes along the third direction and is provided with a first opening, and the second plate 52 is provided with a corresponding second opening, so that the fixing member can fix the second plate 52 and the connecting segment 452.

[0072] In some embodiments, such as when the system does not use the temperature transmitter 45 or the temperature transmitter 45 is used in other locations, the support member 50 is supported on the main connecting pipe 43, two clamps 454 are disposed opposite to each other on both sides of the main connecting pipe 43, and the clamps 454 and the second plate 52 are fixedly connected by fasteners to fix the second plate 52 and the main connecting pipe 43.

[0073] In some examples, the temperature transmitter 45 may be mounted on the frame 12, but this application does not limit the mounting location of the temperature transmitter 45.

[0074] Please refer to Figures 4-5 , Figure 4 yes Figure 1 The schematic diagram of the hydrogen production device shown Figure 3 , Figure 5 yes Figure 1 The diagram shows a side view of an electrolytic cell. In some embodiments, a plurality of electrolytic cells 31 are arranged side by side along a third direction, and each of the main connecting pipes 43 is connected to a plurality of the branch connecting pipes 44. The plurality of branch connecting pipes 44 extend along a second direction and / or a third direction and are connected to each of the electrolytic cells 31, wherein the second direction and the third direction intersect.

[0075] Specifically, multiple branch connecting pipes 44 can extend along the second direction to connect to the electrolytic cell assembly 30. Since multiple electrolytic cells 31 are arranged side by side, the branch connecting pipes 44 can also extend along the third direction to connect to the multiple electrolytic cells 31. For example, when there are four electrolytic cells 31, a main connecting pipe 43 and four branch connecting pipes 44 form a pipe group, which connects to the four electrolytic cells 31 to match the interface distribution of the multiple electrolytic cells 31.

[0076] The second direction can be the length direction of the base plate 11, and the third direction can be the width direction of the base plate 11. Refer to the previous embodiments, which will not be repeated here.

[0077] In some embodiments, the plurality of electrolytic cells 31 are at the same height along the first direction. It is understood that having consistent horizontal heights among the electrolytic cells 31 can make the production process more standardized, which helps to improve production efficiency and reduce variations and errors in the production process.

[0078] In some embodiments, the plurality of connection ports include an alkali inlet and a gas outlet. Each electrolytic cell 31 is provided with two alkali inlets and two gas outlets. The gas outlets are located at the top of the alkali inlets along a first direction. Each alkali inlet and each gas outlet are respectively connected to a branch connection pipe 44.

[0079] Understandably, since the density of gas is lower than that of alkali solution, if the gas outlet is located at the top of the electrolytic cell, the principle of natural gas rise can be used to ensure that the gas can be smoothly discharged from the cell and avoid gas stagnation in the electrolytic cell 31.

[0080] In some examples, the branch connecting pipes 44 of the pipe group are respectively provided with hydrogen inlet 442, oxygen inlet 441, hydrogen-side alkaline solution outlet 444, and oxygen-side alkaline solution outlet 443, and each of the electrolytic cells 31 is provided with hydrogen outlet 312, oxygen outlet 311, hydrogen-side alkaline solution inlet 314, and oxygen-side alkaline solution inlet 313.

[0081] Specifically, the pipe groups are divided into hydrogen transmission pipe groups, oxygen transmission pipe groups, hydrogen-side alkali solution transmission pipe groups, and oxygen-side alkali solution transmission pipe groups. When there are four electrolyzers 31, each pipe group includes four branch connecting pipes 44. The branch connecting pipes 44 of the oxygen transmission pipe group are provided with oxygen inlets 441, and the oxygen outlet 311 is connected to the oxygen inlet 441. The branch connecting pipes 44 of the hydrogen transmission pipe group are provided with hydrogen inlets 442, and the hydrogen outlet 312 is connected to the hydrogen inlet 442, so that the hydrogen generated by the electrolyzer assembly 30 enters the gas-liquid separation assembly 20 through the branch connecting pipes 44.

[0082] The oxygen-side alkali transfer pipe assembly has a branch connection pipe 44 with an oxygen-side alkali outlet 443. The oxygen-side alkali inlet 313 is connected to the oxygen-side alkali outlet 443. The hydrogen-side alkali transfer pipe assembly has a branch connection pipe 44 with a hydrogen-side alkali outlet 444. The hydrogen-side alkali inlet 314 is connected to the hydrogen-side alkali outlet 444, so that the alkali separated by the gas-liquid separation assembly 20 enters the electrolytic cell assembly 30 through the branch connection pipe 44.

[0083] In some examples, the hydrogen production unit 100 also includes a magnetically shielded pump 70 and a filter 80. Two magnetically shielded pumps 70 are provided to draw alkaline solution from the gas-liquid separator 21 and circulate it within the system. The alkaline solution enters the electrolyzer 31 via the magnetically shielded pump 70. Two filters 80 are provided to remove impurities, bubbles, or other contaminants from the electrolyte. During hydrogen production, the magnetically shielded pump 70 draws alkaline solution from the gas-liquid separator 20. The alkaline solution filtered by the filter 80 passes through the electrolyzer assembly 30 to produce hydrogen and oxygen. The hydrogen and oxygen return to the gas-liquid separator 20. Under gravity, the alkaline solution sinks, while the hydrogen and oxygen rise. After condensation in a heat exchanger, the condensed alkaline solution is returned to the gas-liquid separator 20, while the gas enters the subsequent detection module.

[0084] In some examples, the hydrogen production equipment also includes a heat exchanger assembly 60, which comprises two plate heat exchangers 61 and two shell-and-tube heat exchangers 62. The plate heat exchangers 61 are composed of metal plates connected by gaskets or welding. Heat exchange occurs through flow channels between the plates, with hot and cold fluids alternately flowing across both sides of the plates, transferring heat through the metal plates. The shell-and-tube heat exchangers 62 are composed of metal tubes, with fluid within the shell 10 flowing through the space inside the shell and exchanging heat with the tube walls. The plate heat exchangers 61 can be used to condense alkaline solutions, and the shell-and-tube heat exchangers 62 can be used to condense alkaline solutions carried by gas.

[0085] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A hydrogen production apparatus, characterized in that, include: A housing, the housing comprising a base plate and a frame, the frame being mounted on the base plate and forming a receiving space with the base plate; A gas-liquid separation assembly is installed in the accommodating space; An electrolytic cell assembly, wherein the electrolytic cell assembly is disposed at an interval from the gas-liquid separation assembly; A connecting pipe assembly, one end of which is connected to the gas-liquid separation assembly, and the other end of which is connected to the electrolytic cell assembly; A support member, one end of which is fixed to the base plate, and the other end of which is fixedly connected to the connecting pipe assembly.

2. The hydrogen production apparatus according to claim 1, characterized in that, The electrolytic cell assembly is located outside the accommodating space; The connecting pipe assembly is at least partially located within the receiving space, the support member is located within the receiving space, and the other end of the support member is fixedly connected to the connecting pipe assembly.

3. The hydrogen production apparatus according to claim 2, characterized in that, The gas-liquid separation component is spaced apart from the base plate, and the connecting pipe assembly is disposed between the base plate and the gas-liquid separation component; The connecting pipe assembly includes a first connecting portion and a second connecting portion. The first connecting portion extends along a first direction, and the second connecting portion extends at least partially along a second direction. One end of the first connecting portion away from the base plate is connected to the gas-liquid separation assembly, and the other end of the first connecting portion near the base plate is connected to the second connecting portion. The other end of the support member is fixedly connected to the second connecting portion. The first direction and the second direction intersect.

4. The hydrogen production apparatus according to claim 3, characterized in that, The connecting pipe assembly includes a main connecting pipe and a plurality of branch connecting pipes. The main connecting pipe is partially located in the first connecting portion and partially located in the second connecting portion. The plurality of branch connecting pipes are connected to the main connecting pipe located in the second connecting portion. Each branch connecting pipe extends at least partially outward from the receiving space and is connected to the electrolytic cell assembly. The other end of the support member is fixedly connected to the main connecting pipe located in the second connecting portion.

5. The hydrogen production apparatus according to claim 4, characterized in that, The connecting pipe assembly includes multiple main connecting pipes, the hydrogen production device includes multiple support members, the electrolyzer assembly includes multiple electrolyzers, each electrolyzer has a connection port at a different height, each main connecting pipe located at the second connection part has a different distance from the bottom plate to correspond to the connection port, and each support member is fixedly connected to a main connecting pipe located at the second connection part.

6. The hydrogen production apparatus according to claim 5, characterized in that, The connecting pipe assembly also includes multiple temperature transmitters, each of which is installed on a main connecting pipe, and each of the support members is fixedly connected to one of the temperature transmitters.

7. The hydrogen production apparatus according to claim 6, characterized in that, The main connecting pipe includes a first section and a second section spaced apart. The temperature transmitter includes an instrument assembly and a connecting section. The connecting section is installed between the first section and the second section. The instrument assembly is fixed to the connecting section and extends at least partially into the connecting section to measure temperature. The support member is fixedly connected to the side of the connecting section away from the instrument assembly.

8. The hydrogen production apparatus according to claim 7, characterized in that, The support includes a first plate and two opposing second plates. The first plate extends along a first direction, and each second plate is perpendicular to the first plate. The first plate is connected between the two second plates. One second plate is fixed to the base plate, and the other second plate is fixed to the side of the connecting section away from the instrument assembly.

9. The hydrogen production apparatus according to claim 8, characterized in that, The temperature transmitter also includes a fixing member and two clamps. Each clamp includes a body and a fixing part connected to each other. The two bodies are clamped on both sides of the connecting section along a first direction. Each fixing part protrudes along a direction parallel to the second plate and is provided with a first opening. The first openings of the two fixing parts are arranged opposite to each other. The second plate has a corresponding second opening, and the fastener passes through the two first openings and is fixedly connected to the second opening to fix the second plate and the connecting section.

10. The hydrogen production apparatus according to claim 5, characterized in that, Multiple electrolytic cells are arranged side by side along a third direction. Each of the main connecting pipes is connected to multiple branch connecting pipes. The multiple branch connecting pipes extend along a second direction and / or a third direction and are connected to each of the electrolytic cells. The second direction and the third direction intersect.

11. The hydrogen production apparatus according to claim 10, characterized in that, Multiple electrolytic cells have the same height along the first direction.

12. The hydrogen production apparatus according to claim 10, characterized in that, The plurality of connection ports include an alkali inlet and a gas outlet. Each electrolytic cell is provided with two alkali inlets and two gas outlets. The gas outlets are located at the top of the alkali inlets along a first direction. Each alkali inlet and each gas outlet are respectively connected to one of the branch connection pipes.

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