A hydrogen production electrolyzer

Abstract

The present invention discloses a hydrogen production electrolyzer, comprising a plurality of electrolysis unit modules arranged in sequence, an insulating spacer is arranged between adjacent electrolysis unit modules, each electrolysis unit module comprises a main unit and an auxiliary component, the main component comprises a positive electrode element and a negative electrode element, the positive electrode element and the negative electrode element are used to be connected to an external power source, the main component also comprises a medium inlet and a medium outlet, the medium inlet is used to be connected to an external electrolyte source, and the medium outlet is used to be connected to an external collecting mechanism. The present invention adopts a modular structure, and each electrolysis unit module comprises an independent medium inlet and medium outlet. When any electrolysis unit module of the electrolyzer needs to be overhauled, only the medium inlet and medium outlet of the electrolysis unit module that needs to be overhauled are closed, and the connection between the electrolysis unit module and the external power source is cut off, so that the electrolysis unit module stops running, and other electrolysis unit modules can continue to be used and work normally.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic hydrogen production equipment, and in particular to a hydrogen production electrolytic cell. Background Art

[0002] Hydrogen production by electrolysis is a process that uses electrolysis to decompose water into hydrogen and oxygen. The hydrogen production by electrolysis process uses alkaline electrolyte and electrolytic cell.

[0003] At present, the electrolytic cell for hydrogen production by alkaline water electrolysis is a filter press structure with a cylindrical shape. It is mainly composed of two side end pressure plates, plate assemblies, sealing gaskets, diaphragms and other components that are tightened and fastened by multiple large tie rod threads. The sealing gaskets and diaphragms are sandwiched between two adjacent plate assemblies to form an electrolysis chamber. The entire electrolytic cell is composed of hundreds of electrolysis chambers, and the entire electrolytic cell medium enters and exits the electrolytic cell as a whole.

[0004] In the prior art, there is also a modular design of the electrolytic cell, one end of which is connected to the positive electrode of electricity and the other end is connected to the negative electrode of electricity. However, the entire electrolytic cell still has the medium entering and exiting as a whole on the negative electrode side. The positive electrode terminal board is connected to the positive electrode of the power supply, and the negative electrode terminal board is connected to the negative electrode of the power supply. The gas and liquid medium enter and exit from the negative electrode terminal. Because each unit module and component is provided with adjacent matching medium inlet and outlet channels, after power is turned on, the electrolytic chamber in each unit module undergoes an electrolytic reaction under the action of the electric field. However, when a conventional electrolytic cell is used for a long time and individual module groups are replaced, the electrolyte inside the cell body must be emptied before the unit module is replaced. The emptying process causes difficulties for maintenance and also causes waste of electrolyte. At the same time, it takes a long time to discharge all the liquid, resulting in time-consuming and costly maintenance and replacement of a single unit module.

[0005] At the same time, in the modular electrolytic cell application scenario, when any unit module of the cell body needs to be repaired after long-term use, the electrolytic cell medium enters and exits the electrolytic cell as a whole; the processing method is to replace the unit module, that is, take out the unit module to be replaced, and replace it with a unit module that is consistent with the replaced unit module, and continue to use it after tightening, but the entire electrolytic cell needs to be stopped, which reduces the maintenance efficiency of the electrolytic cell. Summary of the invention

[0006] The purpose of the present invention is to provide a hydrogen production electrolyzer to solve the problems existing in the above-mentioned prior art, improve the maintenance efficiency of the hydrogen production electrolyzer and reduce the maintenance cost.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a hydrogen production electrolyzer, comprising a plurality of electrolysis unit modules arranged in sequence, wherein an insulating spacer is arranged between adjacent electrolysis unit modules, and each of the electrolysis unit modules comprises:

[0009] A main body component, the main body component includes a positive electrode element, a negative electrode element, and a plurality of electrode plates sequentially arranged between the positive electrode element and the negative electrode element, and an electrolytic chamber for reacting with an electrolyte is formed between adjacent electrode plates, between the electrode plate and the positive electrode element, and between the electrode plate and the negative electrode element; the positive electrode element and the negative electrode element are used to be connected to an external power source and are electrically connected to the electrode plates; the main body component also includes a medium inlet and a medium outlet, the medium inlet is used to be connected to an external electrolyte source, the medium outlet is used to be connected to an external collecting mechanism, and the medium inlet and the medium outlet are both connected to the electrolytic chamber;

[0010] An auxiliary component is used to connect the positive electrode component to the negative electrode component to fix the electrode plate between the positive electrode component and the negative electrode component.

[0011] Preferably, the medium inlet is connected to an inlet pipe, which is used to be connected to an external electrolyte source. An outlet pipe is provided at the medium outlet, and the outlet pipe is connected to the external collecting mechanism. The number of the medium outlets is at least two, and the outlet pipes correspond to the medium outlets one by one.

[0012] Preferably, the outlet pipe and the inlet pipe have a connecting flange or a threaded joint at one end away from the main assembly;

[0013] The inlet pipe and the medium inlet, and the outlet pipe and the medium outlet can be detachably connected.

[0014] Preferably, the medium inlet is arranged at the bottom of the main body component, and the medium inlet is communicated with the bottom of the electrolysis chamber, and the medium outlet is arranged at the top of the main body component, and the medium outlet is communicated with the top of the electrolysis chamber.

[0015] Preferably, the medium inlet and the medium outlet are both arranged on the negative terminal electrode element.

[0016] Preferably, the positive terminal electrode element and the negative terminal electrode element are connected by using a plurality of groups of auxiliary components, and all of the auxiliary components are evenly arranged around the electrode plate.

[0017] Preferably, the auxiliary component comprises a connecting screw and a fastening nut, the positive electrode element and the negative electrode element both have a connecting hole adapted to the connecting screw, the connecting screw is passed through the connecting hole and fixed by the fastening nut, and the connecting screw is threadedly connected to the fastening nut;

[0018] The connecting screw rod is covered with an insulating tube, and insulating gaskets are arranged between the positive electrode element and the negative electrode element and the fastening nut.

[0019] Preferably, the positive electrode element and the negative electrode element both include an electrode main body plate and a power terminal plate, the power terminal plate is connected to the outer peripheral surface of the electrode main body plate, the power terminal plate is used to be electrically connected to an external power source, and the medium inlet and the medium outlet are both arranged on the outer peripheral surface of the electrode main body plate.

[0020] Preferably, the positive terminal electrode element and the negative terminal electrode element both have a support seat, so that the electrolytic unit module can be connected to an external support mechanism using the support seat.

[0021] Preferably, all of the electrolytic unit modules are arranged in sequence along a direction parallel to a line connecting the positive electrode element to the negative electrode element, and insulating spacers are provided between adjacent electrolytic unit modules.

[0022] Preferably, the hydrogen-producing electrolytic cell comprises a plurality of cell bodies, each of which comprises a plurality of electrolysis unit modules, and the insulating spacers are arranged between adjacent electrolysis unit modules; the adjacent cell bodies are symmetrically arranged with the direction perpendicular to the line connecting the positive electrode element to the negative electrode element as the symmetry axis.

[0023] Preferably, all of the electrolysis unit modules are fixed by a clamping assembly, which includes a pressure plate and a pull rod. The pressure plates are in two groups, and the two pressure plates are respectively located on both sides of the closely arranged electrolysis unit modules. The insulating spacer is also arranged between the pressure plate and the electrolysis unit module. The pull rod connects the two pressure plates to clamp all of the electrolysis unit modules.

[0024] Preferably, both ends of the pull rod are fixed by means of clamping nuts after passing through the pressure plate, the pull rod is threadedly connected with the clamping nut, and a disc spring is further arranged between the clamping nut and the pressure plate;

[0025] There are multiple pull rods, and all of the pull rods are arranged around the electrolysis unit module;

[0026] The pressure plate has a hollow structure and a fixing seat, and the pressure plate can be connected to an external supporting mechanism by using the fixing seat.

[0027] Preferably, all of the electrolysis unit modules are compressed by a compression mechanism.

[0028] Compared with the prior art, the present invention has achieved the following technical effects:

[0029] The hydrogen production electrolyzer of the present invention comprises a plurality of electrolysis unit modules, each of which comprises a main component and an auxiliary component. The main component comprises a positive electrode element, a negative electrode element and a plurality of pole plates sequentially arranged between the positive electrode element and the negative electrode element to form a plurality of electrolysis chambers for electrolyte reaction. The positive electrode element is connected to the negative electrode element by the auxiliary component to ensure the smooth progress of hydrogen production by electrolysis. The main component comprises a medium inlet and a medium outlet, both of which are connected to the electrolysis chamber so that the electrolyte can enter the electrolysis chamber and the hydrogen produced by electrolysis can be smoothly discharged. The hydrogen-producing electrolyzer of the present invention comprises a plurality of electrolysis unit modules, adopts a modular structure, and each electrolysis unit module comprises an independent medium inlet and medium outlet. When any electrolysis unit module of the electrolyzer needs to be overhauled, only the medium inlet and medium outlet of the electrolysis unit module that needs to be overhauled are closed, and the connection between the electrolysis unit module and the external power supply is cut off, so that the electrolysis unit module stops running, and other electrolysis unit modules can continue to be used and work normally, which facilitates the overhaul of the electrolyzer, eliminates the need to discharge the electrolyte in the entire electrolyzer, improves the overhaul efficiency of the electrolyzer, and saves the overhaul cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only 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.

[0031] Figure 1 It is an axonometric schematic diagram of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of the main view of the hydrogen production electrolyzer disclosed in the embodiment of the present invention;

[0033] Figure 3 A schematic side view of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0034] Figure 4 It is an axonometric schematic diagram of an electrolysis unit module of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0035] Figure 5 It is a front view schematic diagram of an electrolysis unit module of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0036] Figure 6 A side view schematic diagram of an electrolysis unit module of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0037] Figure 7It is a cross-sectional schematic diagram of an electrolysis unit module of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of a partial disassembly of an electrolysis unit module of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0039] Fig. 9 A schematic diagram of the structure of a hydrogen production electrolyzer provided with a pull rod according to an embodiment of the present invention;

[0040] Fig.10 The hydrogen production electrolyzer disclosed in the embodiment of the present invention includes a structural schematic diagram of electrolysis unit modules of different specifications;

[0041] Fig.11 It is a schematic front view of a pressure plate of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0042] Fig.12 A schematic side view of a pressure plate of a hydrogen production electrolyzer disclosed in an embodiment of the present invention;

[0043] Fig.13 This is an axonometric diagram of a hydrogen production electrolyzer disclosed in an embodiment of the present invention when a base is provided;

[0044] Fig.14 This is an axonometric diagram of a hydrogen production electrolyzer disclosed in an embodiment of the present invention when a base is provided;

[0045] Fig.15 It is an axonometric schematic diagram of the hydrogen production electrolyzer disclosed in the embodiment of the present invention including a tank body;

[0046] Fig.16 This is a schematic diagram of the disassembly of part of the structure of the hydrogen production electrolyzer disclosed in an embodiment of the present invention.

[0047] In the figure: 100, hydrogen production electrolyzer; 200, electrolysis unit module;

[0048] 1. Main assembly; 2. Positive electrode element; 3. Negative electrode element; 4. Plate; 5. Electrolysis chamber; 6. Medium inlet; 7. Medium outlet; 8. Auxiliary assembly; 9. Hydrogen evolution electrode; 10. Oxygen evolution electrode; 11. Diaphragm; 12. Inlet pipe; 13. Outlet pipe; 14. Connecting flange; 15. Connecting screw; 16. Fastening nut; 17. Insulating tube; 18. Insulating gasket; 19. Electrode main plate; 20. Power terminal board; 21. Support seat; 22. Clamping assembly; 23. Pressure plate; 24. Pull rod; 25. Clamping nut; 26. Disc spring; 27. Fixed seat; 28. Base; 29. ​​Insulating spacer. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0050] The purpose of the present invention is to provide a hydrogen production electrolyzer to solve the problems existing in the above-mentioned prior art, improve the maintenance efficiency of the hydrogen production electrolyzer and reduce the maintenance cost.

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] The present invention provides a hydrogen production electrolyzer 100, comprising a plurality of electrolysis unit modules 200 arranged in sequence, wherein an insulating spacer 29 is arranged between adjacent electrolysis unit modules 200, and each electrolysis unit module 200 comprises a main unit and an auxiliary component 8, wherein the main component 1 comprises a positive electrode element 2, a negative electrode element 3, and a plurality of plates 4 arranged in sequence between the positive electrode element 2 and the negative electrode element 3, and a plurality of plates 4 are formed between adjacent plates 4, between plates 4 and the positive electrode element 2, and between plates 4 and the negative electrode element 3. An electrolytic chamber 5 for reacting the electrolyte; the positive electrode element 2 and the negative electrode element 3 are used to be connected to an external power source and are electrically connected to the electrode plate 4; the main component 1 also includes a medium inlet 6 and a medium outlet 7, the medium inlet 6 is used to be connected to an external electrolyte source, the medium outlet 7 is used to be connected to an external collecting mechanism, and the medium inlet 6 and the medium outlet 7 are both connected to the electrolytic chamber 5; the positive electrode element 2 is connected to the negative electrode element 3 by an auxiliary component 8 to fix the electrode plate 4 between the positive electrode element 2 and the negative electrode element 3.

[0053] The hydrogen production electrolyzer 100 of the present invention includes a plurality of electrolysis unit modules 200. Figure 1Each electrolysis unit module 200 includes a main component 1 and an auxiliary component 8. The main component 1 includes a positive electrode element 2, a negative electrode element 3, and a plurality of plates 4 sequentially arranged between the positive electrode element 2 and the negative electrode element 3 to form a plurality of electrolysis chambers 5 for electrolyte reaction. The positive electrode element 2 is connected to the negative electrode element 3 by the auxiliary component 8 to ensure the smooth electrolysis of hydrogen production. The main component 1 has a medium inlet 6 and a medium outlet 7. The medium inlet 6 and the medium outlet 7 are both connected to the electrolysis chamber 5 so that the electrolyte can enter the electrolysis chamber 5 and the hydrogen produced by electrolysis can be smoothly discharged. The hydrogen production electrolyzer 100 of the present invention includes a plurality of electrolysis unit modules 200, adopting a modular structure, and each electrolysis unit module 200 includes an independent medium inlet 6 and medium outlet 7. See for details. Figure 4 When any electrolytic unit module 200 of the electrolytic cell needs to be repaired, only the medium inlet 6 and the medium outlet 7 of the electrolytic unit module 200 that needs to be repaired are closed, and the connection between the electrolytic unit module 200 and the external power supply is cut off to stop the operation of the electrolytic unit module 200. Other electrolytic unit modules 200 can continue to be used and work normally, which facilitates the maintenance of the electrolytic cell. There is no need to discharge the electrolyte in the entire electrolytic cell, which improves the maintenance efficiency of the electrolytic cell and saves maintenance costs.

[0054] It should be explained here that the working process and principle of hydrogen production by electrolysis are well known to those skilled in the art. A hydrogen evolution electrode 9, an oxygen evolution electrode 10 and a diaphragm 11 are provided in each electrolysis chamber 5. The components of each electrolysis chamber 5 are stacked in series. The electrode plate 4 includes a main electrode plate and an electrode frame. A sealing insulating pad is provided between adjacent electrode frames. These are all common knowledge of those skilled in the art and will not be elaborated here.

[0055] In addition, the number of electrolytic chambers 5 in each electrolytic unit module 200 can be adjusted according to actual needs, and the specifications of the electrolytic unit module 200 can be set to various. Fig.10 , in order to adapt to the specific production conditions of electrolyzers of various specifications. For example, when the gas production requirements of different electrolysis unit modules 200 are different, electrolysis unit modules 200 of appropriate specifications can be selected to achieve the purpose of constructing hydrogen production electrolyzers 100 of different specifications according to different requirements, which greatly improves the flexibility and adaptability of the hydrogen production electrolyzer 100.

[0056] In order to facilitate the export of the electrolyte and the produced hydrogen, the medium inlet 6 is connected to an inlet pipe 12, which is used to communicate with an external electrolyte source, and an outlet pipe 13 is provided at the medium outlet 7, which is connected to an external collecting mechanism, and the hydrogen obtained by electrolysis can be passed into the external collecting mechanism for collection; since oxygen is generally generated during the electrolytic hydrogen production process, in practical applications, the number of medium outlets 7 can be set to at least two, and the outlet pipes 13 correspond to the medium outlets 7 one by one, and the generated hydrogen and oxygen are respectively exported, which is convenient for subsequent collection and improves the economic benefits of electrolytic production. In practical applications, more medium outlets 7 can be set as needed to adapt to various specific working conditions and meet production needs.

[0057] It should also be noted here that, for the convenience of control, valves may be provided on both the inlet pipe 12 and the outlet pipe 13 to control the opening and closing states of the medium inlet 6 and the medium outlet 7, thereby improving the convenience of operation.

[0058] In other embodiments of the present invention, both the outlet pipe 13 and the inlet pipe 12 have a connecting flange 14 at one end away from the main assembly 1. Figure 4-Figure 6 , which facilitates the connection between the inlet pipe 12 and the external electrolyte source, and the outlet pipe 13 is connected to the external collecting mechanism, thereby improving the convenience of operation of the electrolysis unit module 200, and is conducive to improving the assembly and maintenance efficiency of the electrolytic cell. In practical applications, other types of connectors, such as threaded connectors, quick connectors, etc., can also be connected to the ends of the outlet pipe 13 and the inlet pipe 12 away from the main assembly 1 to meet the transportation requirements of the electrolyte and the electrolysis product, while further improving the adaptability and convenience of operation of the electrolytic cell.

[0059] In other embodiments that can be realized by the present invention, the inlet pipe 12 and the medium inlet 6, and the outlet pipe 13 and the medium outlet 7 can be detachably connected, which is convenient for disassembly and replacement. Both the inlet pipe 12 and the outlet pipe 13 can be made of hoses to adapt to various installation spaces, reduce the occupied space of the electrolytic cell, and improve the adaptability of the electrolytic cell. It is also necessary to explain that after the inlet pipe 12 and the outlet pipe 13 are connected, they can be tightened with a clamp to avoid falling off and leakage, thereby improving the working reliability of the electrolytic cell.

[0060] In this specific embodiment, the medium inlet 6 is arranged at the bottom of the main body component 1, and the medium inlet 6 is connected to the bottom of the electrolysis chamber 5. The medium outlet 7 is arranged at the top of the main body component 1, and the medium outlet 7 is connected to the top of the electrolysis chamber 5, so as to facilitate the export of the prepared hydrogen.

[0061] The positive electrode element 2 and the negative electrode element 3 ensure that the electrolysis unit module 200 is connected to an external power source. In other specific embodiments that can be realized by the present invention, the positive electrode element 2 and the negative electrode element 3 are both cylindrical structures, and the medium inlet 6 and the medium outlet 7 are both arranged on the outer peripheral surface of the negative electrode element 3 to keep the interface power polarity consistent. When the electrolysis unit module 200 is overhauled, the electrolyte of the entire electrolytic cell does not need to be completely discharged, which saves maintenance time and saves the space occupied by the electrolysis unit module 200, avoids affecting the arrangement of multiple electrolysis unit modules 200, and saves the space occupied by the electrolytic cell. In actual applications, the medium inlet 6 and the medium outlet 7 can also be arranged at other positions according to actual needs to meet different working conditions.

[0062] Specifically, the positive electrode element 2 and the negative electrode element 3 are connected by using multiple groups of auxiliary components 8, and all the auxiliary components 8 are evenly arranged around the electrode plate 4 to improve the connection stability of the positive electrode element 2 and the negative electrode element 3.

[0063] In this specific embodiment, the auxiliary component 8 includes a connecting screw 15 and a fastening nut 16. Figure 4-Figure 8 The positive electrode element 2 and the negative electrode element 3 both have a connecting hole that is compatible with the connecting screw 15. The connecting screw 15 passes through the connecting hole and is fixed by a fastening nut 16. The connecting screw 15 is threadedly connected with the fastening nut 16 and is fixed by the connecting screw 15 and the fastening nut 16. The connection and fastening are convenient to operate, which ensures the structural stability of the electrolysis unit module 200 and is easy to adjust, which is beneficial to improving the adaptability of the electrolysis unit module 200.

[0064] In order to prevent short circuit and other situations from affecting the normal operation of the electrolysis unit module 200, an insulating tube 17 is provided on the outer sleeve of the connecting screw 15, and insulating gaskets 18 are provided between the positive electrode element 2 and the negative electrode element 3 and the fastening nut 16 to ensure the working reliability of the electrolysis unit module 200.

[0065] More specifically, the positive electrode element 2 and the negative electrode element 3 both include an electrode main body plate 19 and a power terminal plate 20. The power terminal plate 20 is connected to the outer peripheral surface of the electrode main body plate 19 to save space. The power terminal plate 20 is used to electrically connect to an external power source. The positive pole of the external power source is connected to the power terminal plate 20 of the positive electrode element 2, and the negative pole of the external power source is connected to the power terminal plate 20 of the negative electrode element 3. The medium inlet 6 and the medium outlet 7 are both arranged on the outer peripheral surface of the electrode main body plate 19.

[0066] It should also be emphasized that both the positive electrode element 2 and the negative electrode element 3 have a support seat 21, so that the electrolysis unit module 200 can be connected to the external support mechanism using the support seat 21. Under the condition that the electrolytic cell is large in size and the number of electrolysis unit modules 200 is large, the electrolytic cell will be deflected due to its excessive length, which will affect the sealing and normal production of the electrolytic cell. The support seat 21 is supported by an external support mechanism to enhance the structural stability of the electrolysis unit module 200 and improve the working reliability of the hydrogen production electrolytic cell 100 of the present invention. It should be explained here that the external support mechanism can be a support frame, a support device or an installation foundation at the working site of the electrolytic cell. In this specific embodiment, the support seat 21 is a block structure, which is arranged on both sides of the positive electrode element 2 and the negative electrode element 3 symmetrically. The bottom surface of the support seat 21 can contact with the external support mechanism, and the surface contact increases the support area and improves the support stability; in actual applications, the shape, quantity and setting position of the support seat 21 can also be adjusted according to actual needs.

[0067] In practical applications, all electrolytic unit modules 200 can be arranged in sequence along a direction parallel to the line connecting the positive electrode element 2 to the negative electrode element 3, and insulating spacers 29 are arranged between adjacent electrolytic unit modules 200 to ensure the normal operation of the electrolytic cell.

[0068] In other specific embodiments that can be realized by the present invention, the hydrogen production electrolyzer 100 includes a plurality of tank bodies, each of which includes a plurality of electrolysis unit modules 200, and an insulating spacer 29 is arranged between adjacent electrolysis unit modules 200; for example, adjacent tank bodies are symmetrically arranged with the direction perpendicular to the line connecting the positive electrode element 2 to the negative electrode element 3 as the symmetry axis; electrodes can also be arranged at both ends of the tank body, and the electrodes at both ends of the electrolyzer have the same polarity, and the electrodes in the middle have the same polarity, and an intermediate electrode can be arranged, for example, the electrodes at both ends are negative electrodes, and the intermediate electrode is positive electrode, or, the electrodes at both ends are positive electrodes, and the intermediate electrode is negative electrode, and the intermediate electrode and the electrodes at both ends provide power wiring positions for the entire tank body, for details, please refer to Fig.15 In addition, the electrolysis unit modules 200 included in each cell body can also be set to the same or different numbers and forms, and multiple cells can be connected in series or in parallel according to specific working conditions. In the actual production process, the specifications, quantity and arrangement of the electrolysis unit modules 200 can be adjusted according to specific working conditions to improve the flexibility and adaptability of the hydrogen production electrolyzer 100.

[0069] Furthermore, all the electrolysis unit modules 200 are fixed by means of a clamping assembly 22, which includes a pressure plate 23 and a pull rod 24. There are two groups of pressure plates 23, and the two pressure plates 23 are respectively located on both sides of the closely arranged electrolysis unit modules 200. An insulating spacer 29 is also arranged between the pressure plate 23 and the electrolysis unit module 200. The pull rod 24 connects the two pressure plates 23 to clamp all the electrolysis unit modules 200, thereby improving the structural stability and reliability of the hydrogen production electrolyzer 100.

[0070] The two ends of the tie rod 24 pass through the pressure plate 23 and are fixed by the clamping nut 25. The tie rod 24 and the clamping nut 25 are threadedly connected. Please refer to Fig. 9 A disc spring 26 is also provided between the clamping nut 25 and the pressure plate 23, which can provide a certain pre-tightening force to the pressure plate 23, further ensuring the structural stability of the hydrogen production electrolyzer 100. The number of tie rods 24 can be set to multiple, and all tie rods 24 are evenly arranged around the electrolysis unit module 200 to improve the force uniformity of the pressure plate 23 and each electrolysis unit module 200. The number of tie rods 24 and clamping nuts 25 is determined according to the specifications of the electrolysis unit module 200.

[0071] In other specific embodiments of the present invention, the pressure plate 23 has a hollow structure to reduce weight, and the pressure plate 23 has a fixing seat 27, see Fig.11 The pressure plate 23 can be connected to the external support mechanism by means of the fixing seat 27. The structure of the fixing seat 27 is similar to that of the support seat 21, and will not be described in detail here. In addition, a base 28 can be provided at the bottom of the electrolytic cell, for example, at the bottom of the pressure plate 23, to enhance the support for the electrolytic unit module 200, and further improve the structural stability and reliability of the electrolytic cell.

[0072] In addition, in the hydrogen production electrolyzer 100 of the present invention, all the electrolysis unit modules 200 are clamped by a clamping mechanism, and the clamping mechanism can select a clamping machine such as a hydraulic rod, an electric push rod, etc. While clamping, an external supporting mechanism is used to support each electrolysis unit module 200 to ensure the structural stability and working reliability of the electrolyzer.

[0073] The hydrogen production electrolyzer 100 of the present invention comprises a plurality of electrolysis unit modules 200, each electrolysis unit module 200 is independently connected to electricity, and each electrolysis unit module 200 comprises an independent medium inlet 6 and a medium outlet 7. When any electrolysis unit module 200 needs to be repaired after long-term use, the treatment method can be to replace the electrolysis unit module 200, take out the electrolysis unit module 200 to be replaced, and replace it with an electrolysis unit module 200 that is consistent with the replaced electrolysis unit module 200, and then tighten it. Continue to use, because the medium inlet 6 and medium outlet 7 of each electrolysis unit module 200 are independently in and out, only the valves of the medium inlet 6 and medium outlet 7 of the electrolysis unit module 200 that needs to be repaired are closed, and its connection with the power supply is closed, and the operation of the electrolysis unit module 200 is stopped. The entire electrolytic cell can continue to be used, and closing some electrolysis unit modules 200 individually does not affect the normal use of other electrolysis unit modules 200 of the electrolytic cell, which improves the convenience of overhaul and maintenance of the electrolytic cell and saves maintenance costs.

[0074] In addition, the electrolytic unit module 200 that needs to be replaced can be taken out, and a thick insulating plate or multiple thin insulating plates can be added at the position of the taken out electrolytic unit module 200. The thickness of the added insulating plate can be such that there is no interference between two adjacent electrolytic unit modules 200 when they are pressed together.

[0075] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A hydrogen production electrolyzer, characterized in that: The invention comprises a plurality of electrolysis unit modules arranged in sequence, an insulating spacer is arranged between adjacent electrolysis unit modules, and each of the electrolysis unit modules comprises: A main body component, the main body component includes a positive electrode element, a negative electrode element and a plurality of electrode plates sequentially arranged between the positive electrode element and the negative electrode element, and an electrolytic chamber for reacting with an electrolyte is formed between adjacent electrode plates, between the electrode plate and the positive electrode element, and between the electrode plate and the negative electrode element; the positive electrode element and the negative electrode element are used to be connected to an external power source and electrically connected to the electrode plates; the main body component also includes a medium inlet and a medium outlet, the medium inlet is used to communicate with an external electrolyte source, the medium outlet is used to communicate with an external collecting mechanism, and the medium inlet and the medium outlet are both connected to the electrolytic chamber; the positive electrode element and the negative electrode element each include an electrode main body plate and a power wiring board, the power wiring board is connected to the outer peripheral surface of the electrode main body plate, the power wiring board is used to be electrically connected to an external power source, and the medium inlet and the medium outlet are both arranged on the outer peripheral surface of the electrode main body plate; An auxiliary component is used to connect the positive electrode component to the negative electrode component to fix the electrode plate between the positive electrode component and the negative electrode component.

2. The hydrogen production electrolyzer according to claim 1, characterized in that: The medium inlet is connected to an inlet pipe, which is used to be connected to an external electrolyte source. An outlet pipe is arranged at the medium outlet, and the outlet pipe is connected to the external collecting mechanism. The number of the medium outlets is at least two, and the outlet pipes correspond to the medium outlets one by one.

3. The hydrogen production electrolyzer according to claim 2, characterized in that: The outlet pipe and the inlet pipe both have a connecting flange or a threaded joint at one end away from the main assembly; The inlet pipe and the medium inlet, and the outlet pipe and the medium outlet can be detachably connected.

4. The hydrogen production electrolyzer according to claim 1, characterized in that: The medium inlet is arranged at the bottom of the main body component, and the medium inlet is communicated with the bottom of the electrolysis chamber. The medium outlet is arranged at the top of the main body component, and the medium outlet is communicated with the top of the electrolysis chamber.

5. The hydrogen production electrolyzer according to claim 1, characterized in that: The medium inlet and the medium outlet are both arranged on the negative terminal electrode element.

6. The hydrogen production electrolyzer according to claim 1, characterized in that: The positive terminal electrode element is connected to the negative terminal electrode element by using a plurality of auxiliary components, and all the auxiliary components are evenly arranged around the electrode plate.

7. The hydrogen production electrolyzer according to claim 6, characterized in that: The auxiliary component includes a connecting screw and a fastening nut, the positive electrode element and the negative electrode element both have a connecting hole adapted to the connecting screw, the connecting screw passes through the connecting hole and is fixed by the fastening nut, and the connecting screw is threadedly connected to the fastening nut; The connecting screw rod is covered with an insulating tube, and insulating gaskets are arranged between the positive electrode element and the negative electrode element and the fastening nut.

8. The hydrogen production electrolyzer according to any one of claims 1 to 7, characterized in that: The positive terminal electrode element and the negative terminal electrode element both have a support seat, so that the electrolytic unit module can be connected to an external support mechanism using the support seat.

9. The hydrogen production electrolyzer according to any one of claims 1 to 7, characterized in that: All of the electrolytic unit modules are arranged in sequence along a direction parallel to a line connecting the positive electrode element to the negative electrode element.

10. The hydrogen production electrolyzer according to claim 9, characterized in that: It comprises a plurality of trough bodies, each of which comprises a plurality of electrolytic unit modules, and the insulating spacers are arranged between adjacent electrolytic unit modules; the adjacent trough bodies are symmetrically arranged with the direction perpendicular to the line connecting the positive electrode element to the negative electrode element as the symmetry axis.

11. The hydrogen production electrolyzer according to claim 9, characterized in that: All of the electrolysis unit modules are fixed by a clamping assembly, which includes a pressure plate and a pull rod. There are two groups of pressure plates, and the two pressure plates are respectively located on both sides of the closely arranged electrolysis unit modules. The insulating spacer is also arranged between the pressure plate and the electrolysis unit module. The pull rod connects the two pressure plates to clamp all of the electrolysis unit modules.

12. The hydrogen production electrolyzer according to claim 11, characterized in that: The two ends of the pull rod are fixed by means of a clamping nut after passing through the pressure plate, the pull rod is threadedly connected with the clamping nut, and a disc spring is further arranged between the clamping nut and the pressure plate; There are multiple pull rods, and all of the pull rods are arranged around the electrolysis unit module; The pressure plate has a hollow structure and a fixing seat, and the pressure plate can be connected to an external supporting mechanism by using the fixing seat.

13. The hydrogen production electrolyzer according to claim 9, characterized in that: All of the electrolysis unit modules are compressed by a compression mechanism.

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