Electrolytic tank device for producing hydrogen from seawater

Abstract

The invention discloses a seawater hydrogen production electrolytic cell device which is applied to the technical field of seawater hydrogen production and comprises an electrolytic cell outer shell, two electrolytic cell inner shells are bolted to the two sides of the interior of the electrolytic cell outer shell correspondingly, and an electrolytic cell outer shell cover is installed on the electrolytic cell outer shell; first communicating holes communicating with each other are formed in the sides, close to each other, of the two electrolytic cell inner shells, a proton exchange membrane fixedly connected with the electrolytic cell outer shell is arranged between the two first communicating holes, and the two sides of the proton exchange membrane are filled with catalyst layers. And seawater in the inner shells of the electrolytic cells is blocked by the inner partition plate, so that the seawater can only flow in an S-shaped path between the two inner shells of the electrolytic cells through the first communicating hole and the second communicating hole. And therefore, the retention time of seawater flowing in the electrolytic bath is prolonged, the anode electrode and the cathode electrode can fully react with the seawater to generate oxygen and hydrogen, and the electrolytic efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of seawater hydrogen production, and in particular relates to a seawater hydrogen production electrolyzer device. Background Art

[0002] An electrolyzer is a device that converts electrical energy into chemical energy. Its core function is to decompose an electrolyte (such as water or molten salt) using direct current, generating a redox reaction at the electrode interface to produce the target product. An electrolyzer generally consists of a cell, cathode and anode electrodes, and a diaphragm.

[0003] Currently, a Chinese invention with the announcement number CN118207565B discloses a hydrogen production electrolyzer. Existing electrolyzers use seawater for electrolysis to produce hydrogen, decomposing the water molecules in the seawater into hydrogen and oxygen through the electrolysis process. However, there are the following defects when using seawater in electrolyzers to produce hydrogen: First, after the seawater flows into the electrolyzer, there is a lack of flow structure inside the electrolyzer, so the seawater can only flow from the inlet to the outlet in an intermediate path inside the electrolyzer. The seawater stays in the electrolyzer for a short time, so the time for the electrodes to react with the seawater is also short, which reduces the efficiency of seawater electrolysis.

[0004] At the same time, since the electrodes are fixedly installed inside the electrolytic cell, when seawater flows inside the electrolytic cell, bubbles are easily generated on the electrode surface. These bubbles adhere to the electrode surface, causing the electrodes at the locations where the bubbles are attached to be unable to have direct contact with the seawater. This will reduce the overall contact area between the motor and the seawater, thereby affecting the mass transfer efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a seawater hydrogen production electrolyzer device, which has the advantages of extending the residence time of seawater inside the electrolyzer, improving electrolysis efficiency, reducing bubble adhesion on the electrode surface, and improving mass transfer efficiency.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A seawater hydrogen production electrolyzer device comprises an electrolyzer outer shell, two electrolyzer inner shells are respectively provided on both sides of the inner side of the electrolyzer outer shell, and an electrolyzer outer shell cover is installed on the top of the electrolyzer outer shell; A first communicating hole is provided on each side of the inner shells of the two electrolytic cells that are close to each other. A proton exchange membrane movably connected to the outer shell of the electrolytic cell is provided between the two first communicating holes. Both sides of the proton exchange membrane are filled with a catalyst layer. The interiors of the two electrolytic cell inner shells are fixedly connected with an inner partition, and a second connecting hole is opened at one end of the inner partition away from the proton exchange membrane. The interiors of the two electrolytic cell inner shells are respectively fixedly connected with a cathode electrode and an anode electrode that are slidably connected to the inner partition.

[0007] Using the above technical solution, the seawater inside the inner shell of the electrolytic cell is blocked by an internal partition, so that the seawater can only flow through the first and second connecting holes in an S-shaped path between the inner shells of the two electrolytic cells. This increases the residence time of the seawater while flowing inside the electrolytic cell, allowing the anode and cathode electrodes to more fully react with the seawater to produce oxygen and hydrogen, thereby improving electrolysis efficiency. By turning on the reduction motor to drive the first gear to mesh with the two second gears, the cathode and anode electrodes rotate inside the inner shells of the two electrolytic cells. This enhances the flow force of the seawater on the surfaces of the cathode and anode electrodes, reduces the adhesion of bubbles to the surfaces of the cathode and anode electrodes, and improves mass transfer efficiency.

[0008] Preferably, a mounting cavity is provided in the electrolytic cell outer shell cover, a reduction motor is installed on the top of the electrolytic cell outer shell cover, a rotating shaft is rotatably provided in the mounting cavity, the upper end of the rotating shaft is transmission-connected to the output end of the reduction motor, and a first gear is fixed on the rotating shaft; The tops of the cathode electrode and the anode electrode are both threadedly connected to a connecting plug that is rotatably connected to the outer shell cover of the electrolytic cell. The cathode electrode and the anode electrode are respectively fixed in the two connecting plugs. Rotating cylinders are rotatably arranged in the mounting cavities on both sides of the first gear. The outer side of the rotating cylinder is fixedly sleeved with a second gear that meshes with the first gear.

[0009] By adopting the above technical solution, the flow force of seawater on the surfaces of the cathode electrode and the anode electrode is enhanced, the adhesion of bubbles to the surfaces of the cathode electrode and the anode electrode is reduced, and the mass transfer efficiency is improved.

[0010] Preferably, a diamond-shaped plug rod is welded to the bottom of the rotating cylinder and is slidably plugged into the connecting plug cylinder. An insulating seat is provided on the top of the rotating cylinder and is bolted to the outer cover of the electrolytic cell. An electrode cap is clamped inside the insulating seat. Conductive rods that are electrically connected to the cathode electrode and the anode electrode respectively are provided inside the two connecting plug cylinders. The top of the conductive rod passes through the rotating cylinder and is rotatably connected to the bottom of the electrode cap.

[0011] By adopting the above technical solution, the outer shell of the electrolytic cell can be covered and the top of the outer shell of the electrolytic cell can be opened, so that the interior of the outer shell of the electrolytic cell can be inspected and repaired.

[0012] Preferably, a seawater outlet valve and a seawater inlet valve communicating with the interiors of the two electrolytic cell inner shells are respectively installed on the top and bottom sides of the electrolytic cell outer shell away from each other, a heating cylinder is connected between the seawater inlet valve and the side wall of the electrolytic cell outer shell, a heating wire is provided in the heating cylinder, and a temperature sensor is installed at the bottom of the electrolytic cell inner shell near the seawater inlet valve.

[0013] By adopting the above technical solution, seawater can enter the inner shell of the electrolytic cell through the seawater inlet valve, and at the same time, the seawater is discharged from the inner shell of another electrolytic cell through the inside of the seawater outlet valve, so that the seawater can flow inside the electrolytic cell; at the same time, the seawater can be heated when it enters, thereby improving the electrolysis efficiency of the seawater, and the temperature of the seawater is monitored in real time through the temperature sensor to avoid excessive temperature.

[0014] Preferably, a frame is provided on the outside of the proton exchange membrane, and the frame is inserted into the outer shell of the electrolytic cell. A slot is provided at the bottom of the outer shell of the electrolytic cell, and the frame located at the bottom of the proton exchange membrane is inserted into the slot. A fixing structure capable of fixing the frame is provided at the bottom of the outer shell of the electrolytic cell.

[0015] By adopting the above technical solution, the proton exchange membrane is installed in the outer shell of the electrolyzer through a frame, which is convenient for disassembly and replacement.

[0016] Preferably, the fixing structure includes a fixing groove provided on the side wall of the frame, a blind hole is provided on the side wall of the fixing groove opposite to the slot, a fixing pin is slidably provided in the blind hole, a movable rod is horizontally slidably provided at the bottom of the electrolytic cell outer shell, one end of the movable rod extends into the blind hole and the end is fixedly connected to the fixing pin, and the other end extends outside the electrolytic cell outer shell and a rotating disk is provided at the end, and a compression spring is sleeved on the movable rod located in the blind hole.

[0017] By adopting the above technical solution, the bottom of the frame is inserted into the slot, and the movable rod is driven to slide inward and outward by operating the rotating disk, and the frame is fixed and released by the fixing pin.

[0018] Preferably, a plurality of return springs are provided in the slot, and a limit block is provided on the side wall of the slot. When the bottom of the frame contacts the limit block, the fixing pin is inserted into the fixing slot and the return spring is compressed.

[0019] Using the above technical solution, when the bottom of the frame contacts the limit block, the reset spring is compressed and the fixing pin is inserted into the fixing groove to fix the frame. When the fixing pin is away from the fixing groove, the reset spring pushes the frame upward so that it extends out from the top of the electrolytic cell outer shell for easy removal.

[0020] Preferably, the catalyst layer on the side of the proton exchange membrane close to the anode electrode is an anode catalyst, and the catalyst layer on the side of the proton exchange membrane close to the cathode electrode is a cathode catalyst.

[0021] The above technical solution can significantly reduce the activation energy of the electrolysis reaction, thereby accelerating the reaction rate, effectively promoting the oxidation and reduction reactions, and improving the electrolysis efficiency.

[0022] Preferably, both sides of the top of the electrolytic cell outer shell cover are fixedly connected with exhaust pipes that are respectively connected to the top of the inner cavity of the two electrolytic cell inner shells, and both exhaust pipes are provided with pressure relief valves. The exhaust pipe close to the cathode electrode is provided with an oxygen sensor, and the exhaust pipe close to the anode electrode is provided with a hydrogen sensor.

[0023] Using the above technical solution, the exhaust pipe at one end of the anode can be used to discharge oxygen, while the exhaust pipe at the other end of the anode can be used to discharge hydrogen. The pressure relief valve can release excessive gas pressure inside the shell of the electrolyzer. At the same time, the sensors on the two exhaust pipes can monitor the hydrogen and oxygen content of the two in real time to avoid safety accidents and judge the integrity of the proton exchange membrane.

[0024] Preferably, a capacitive liquid level sensor is provided on the top of the electrolytic cell outer shell cover, a rehydration pump is provided on the outside of the electrolytic cell outer shell, and a spare seawater outlet valve connected to the interior of the electrolytic cell inner shell is installed on the side of the bottom of the electrolytic cell outer shell close to the seawater inlet valve. The outlet pipe of the rehydration pump is connected to the spare seawater outlet valve, and the inlet pipe of the rehydration pump is connected to the external seawater.

[0025] Using the above technical solution, when the capacitive liquid level sensor detects that the seawater in the shell of the electrolytic cell is lower than the set value, the controller starts the refill pump to replenish seawater into the shell of the electrolytic cell from the backup seawater inlet valve, causing the reaction to be interrupted and accelerating electrode oxidation.

[0026] In summary, the present invention has the following beneficial effects: The inner baffle blocks the seawater inside the electrolytic cell's inner shell, forcing it to flow only through the first and second connecting holes in an S-shaped path between the two electrolytic cell inner shells. This increases the residence time of the seawater within the electrolytic cell, allowing the anode and cathode electrodes to more fully react with the seawater to generate oxygen and hydrogen, thereby improving electrolysis efficiency. By turning on the reduction motor to drive the first gear to mesh with the two second gears, the cathode electrode and the anode electrode rotate inside the shells of the two electrolytic cells. This enhances the flow force of seawater on the surfaces of the cathode and anode electrodes, reduces the adhesion of bubbles to the surfaces of the cathode and anode electrodes, and improves mass transfer efficiency. When the motor and proton exchange membrane need to be replaced, remove the mounting bolts, open the electrolyzer shell cover, then unscrew the cathode electrode and anode electrode from the connecting plug, and at the same time pull out the movable rod to move the fixing pin away from the fixing groove. Under the action of the reset spring, the frame inside the catalyst layer is pushed upward, making it easy to remove the frame and replace the proton exchange membrane. The operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic structural diagram of the present invention; Figure 2 It is a cross-sectional view of the structure of the present invention; Figure 3 This invention Figure 2 Enlarged view of point A in the middle; Figure 4 This invention Figure 3 Cross-sectional view at the middle BB; Figure 5 This is a bottom view of the structure of the rotating drum of the present invention; Figure 6 This invention Figure 2 Enlarged view of point C in the middle; Figure 7 This invention Figure 2 Cross-sectional view at DD in the middle.

[0028] Figure numerals: 1, electrolytic cell outer shell; 2, electrolytic cell outer shell cover; 3, electrolytic cell inner shell; 4, first connecting hole; 5, inner partition; 6, second connecting hole; 7, proton exchange membrane; 8, catalyst layer; 9, cathode electrode; 10, anode electrode; 11, reduction motor; 12, first gear; 13, rotating cylinder; 14, second gear; 15, diamond-shaped plug rod; 16, connecting plug cylinder; 17, insulating seat; 18, electrode cap; 19, conductive rod; 20, mounting bolt; 21, seawater inlet valve; 211, heating cylinder; 212, heating wire; 22, seawater outlet Valve; 23. Exhaust pipe; 231. Oxygen sensor; 232. Hydrogen sensor; 233. Pressure relief valve; 24. Heat dissipation net; 25. Sealing ring; 26. Insulation sleeve; 27. Mounting cavity; 28. Rotating shaft; 29. Guide rail frame; 30. Slot; 31. Limit block; 32. Reset spring; 33. Fixing groove; 34. Blind hole; 35. Movable rod; 36. Fixing pin; 37. Compression spring; 38. Rotating disk; 39. Frame; 40. Capacitive liquid level sensor; 41. Refill pump; 42. Controller; 43. Spare seawater inlet valve; 44. Temperature sensor. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings. Example 1

[0030] refer to Figure 1-2A seawater hydrogen production electrolyzer device includes an electrolyzer outer shell 1, two electrolyzer inner shells 3 are bolted to the two sides of the inner shell 1, an electrolyzer outer shell cover 2 is installed on the top of the electrolyzer outer shell 1, and the two electrolyzer inner shells 3 are provided with a first communicating hole 4 that is connected to each other on the side close to each other, a proton exchange membrane 7 movably connected to the electrolyzer outer shell 1 is provided between the two first communicating holes 4, and both sides of the proton exchange membrane 7 are filled with a catalyst layer 8. The interiors of the two electrolyzer inner shells 3 are fixedly connected to an inner partition 5, and a second communicating hole 6 is opened at one end of the inner partition 5 away from the proton exchange membrane 7. The interiors of the two electrolyzer inner shells 3 are respectively fixedly connected to a cathode electrode 9 and an anode electrode 10 that are slidably connected to the inner partition 5.

[0031] The inner baffle 5 blocks the seawater inside the electrolytic cell inner shell 3, forcing it to flow only through the first and second connecting holes 4 and 6 in an S-shaped path between the two electrolytic cell inner shells 3. This increases the residence time of the seawater within the electrolytic cell, allowing the anode electrode 10 and cathode electrode 9 to more fully react with the seawater to produce oxygen and hydrogen, thereby improving electrolysis efficiency.

[0032] In this embodiment, both sides of the bottom of the electrolytic cell housing cover 2 are threadedly connected to mounting bolts 20 that are bolted to the top of the electrolytic cell housing 1. The electrolytic cell housing cover 2 can be opened by moving the top of the electrolytic cell housing 1 to replace the anode electrode 10 and cathode electrode 9 inside the electrolytic cell housing 1.

[0033] In this embodiment, a seawater outlet valve 22 and a seawater inlet valve 21 are bolted to the top and bottom of the electrolytic cell outer shell 1, which are connected to the interiors of the two electrolytic cell inner shells 3. The seawater is filtered, desalinated, and dechlorinated to improve electrolysis efficiency and reduce corrosion of the electrolytic components. Seawater can enter the interior of the electrolytic cell inner shells 3 through the seawater inlet valve 21. Simultaneously, seawater is discharged from the interior of the other electrolytic cell inner shell 3 through the seawater outlet valve 22, allowing seawater to flow within the electrolytic cell. Furthermore, because the seawater outlet valve 22 is higher than the seawater inlet valve 21, the seawater can only be discharged when the water level in the electrolytic cell inner shells 3 is higher than that in the seawater outlet valve 22, maintaining the seawater level within the electrolytic cell inner shells 3 at a normal level.

[0034] Preferably, a heating cylinder 211 is connected between the seawater inlet valve 21 and the side wall of the electrolytic cell outer shell 1, and a heating wire 212 is provided in the heating cylinder 211. A temperature sensor 44 is installed at the bottom of the electrolytic cell inner shell 3 near the seawater inlet valve 21. A controller 42 is provided on the outside of the electrolytic cell outer shell 1. The heating wire 212 is used to heat the incoming seawater to improve the electrolysis efficiency of the seawater. The temperature of the seawater is monitored in real time by the temperature sensor 44, and the heating wire 212 is turned on and off by the controller 42 to avoid excessive temperature.

[0035] Preferably, a backup seawater inlet valve 43 can be provided at the bottom of the side wall of the electrolytic cell outer shell 1, and then a capacitive liquid level sensor 40 is provided on the top of the electrolytic cell outer shell cover 2. A rehydration pump 41 and a controller 42 are provided on the outside of the electrolytic cell outer shell 1. The rehydration pump 41 is connected to the backup seawater inlet valve 43. When the liquid level in the electrolytic cell inner shell 3 is lower than the set threshold, the capacitive liquid level sensor 40 sends a signal to the controller, and the controller 42 turns on the rehydration pump 41 to allow external seawater to enter the electrolytic cell inner shell 3 through the backup seawater inlet valve 43 to increase seawater.

[0036] Preferably, the electrolytic cell outer shell 1 and electrolytic cell outer shell cover 2 are made of stainless steel, and the electrolytic cell inner shell 3 and inner partition 5 are made of ceramic shell. The outer layer is made of stainless steel to increase the service life of the electrolytic cell, and the inner layer is made of ceramic shell to ensure the strength of the electrolytic cell and provide insulation.

[0037] In this embodiment, the catalyst layer 8 on the side of the proton exchange membrane 7 near the anode electrode 10 serves as an anode catalyst, while the catalyst layer 8 on the side of the proton exchange membrane 7 near the cathode electrode 9 serves as a cathode catalyst. This significantly reduces the activation energy of the electrolysis reaction, thereby accelerating the reaction rate, effectively promoting the oxidation and reduction reactions, and improving electrolysis efficiency.

[0038] Preferably, the proton exchange membrane 7 uses a polymer electrolyte membrane, and the catalyst layer 8 on the side of the proton exchange membrane 7 close to the anode electrode 10 uses platinum, palladium, nickel oxide, cobalt oxide, titanium carbide or tungsten carbide as the anode catalyst material, and the catalyst layer 8 on the side of the proton exchange membrane 7 close to the cathode electrode 9 uses ruthenium oxide, tungsten oxide, cerium oxide, titanium oxide, titanium carbide or tungsten carbide as the cathode catalyst material.

[0039] All of the above are existing mature products. For example, the advantages of polymer electrolyte membrane water electrolysis for hydrogen production are high proton conductivity, good electrochemical stability, certain mechanical strength, and high gas barrier performance. It can significantly increase the active surface area and chemical stability of the catalyst and reduce the proton conduction resistance. Its principle is that the proton H+ is decomposed into oxygen, protons H+ and electrons e- at the anode, and the protons H+ then pass through the proton exchange membrane to reach the cathode, and combine with the electrons e- on the cathode side to become hydrogen.

[0040] By opening the seawater inlet valve 21, seawater is pumped into one of the electrolytic cell inner shells 3 inside the electrolytic cell outer shell 1. The seawater then flows into the interior of the other electrolytic cell inner shell 3 through the first communication hole 4. At the same time, the anode electrode 10 and the cathode electrode 9 are energized respectively, so that the seawater undergoes oxidation and reduction reactions with the anode electrode 10 and the cathode electrode 9 inside the two electrolytic cell inner shells 3, thereby generating oxygen and hydrogen respectively. A proton exchange membrane 7 is installed between the anode electrode 10 and the cathode electrode 9 to separate the generated hydrogen and oxygen and prevent them from mixing. Because seawater entering the electrolytic cell inner shell 3 from the seawater inlet valve 21 is blocked by the inner partition 5, it cannot be discharged directly upward from the inside of the seawater outlet valve 22. Instead, it can flow upward through the second communication hole 6 defined within the inner partition 5. This allows the seawater to form an S-shaped flow path as it flows between the two electrolytic cell inner shells 3, rather than a straight upward flow path. This increases the residence time of the seawater within the electrolytic cell, allowing the anode electrode 10 and cathode electrode 9 to more fully react with the seawater to produce oxygen and hydrogen. Example 2

[0041] refer to Figure 1-5 , a seawater hydrogen production electrolyzer device, the electrolyzer shell cover 2 is provided with a mounting cavity 27, the top of the electrolyzer shell cover 2 is provided with a reduction motor 11, the mounting cavity 27 is provided with a rotating shaft 28, the upper end of the rotating shaft 28 is transmission-connected to the output end of the reduction motor 11, the rotating shaft 28 is fixed with a first gear 12, the tops of the cathode electrode 9 and the anode electrode 10 are both threadedly connected with a connecting plug 16 that is rotationally connected to the electrolyzer shell cover 2, the cathode electrode 9 and the anode electrode 10 are respectively fixed in two connecting plugs 16, and the mounting cavities 27 on both sides of the first gear 12 are A rotating cylinder 13 is rotatably provided, and a second gear 14 meshing with the first gear 12 is fixedly sleeved on the outer side of the rotating cylinder 13, and a diamond-shaped plug rod 15 slidably plugged into the connecting plug cylinder 16 is welded to the bottom of the rotating cylinder 13, and an insulating seat 17 bolted to the electrolytic cell outer shell cover 2 is provided on the top of the rotating cylinder 13, and an electrode cap 18 is clamped inside the insulating seat 17, and a conductive rod 19 electrically connected to the cathode electrode 9 and the anode electrode 10 respectively is provided inside the two connecting plug cylinders 16, and the top of the conductive rod 19 passes through the rotating cylinder 13 and is rotatably connected to the bottom of the electrode cap 18.

[0042] By turning on the reduction motor 11 to drive the first gear 12 to mesh with the two second gears 14, the cathode electrode 9 and the anode electrode 10 are rotated inside the two electrolytic cell inner shells 3. This enhances the flow force of seawater on the surfaces of the cathode electrode 9 and the anode electrode 10, reduces the adhesion of bubbles to the surfaces of the cathode electrode 9 and the anode electrode 10, and improves the mass transfer efficiency. In addition, when the cathode electrode 9 and the anode electrode 10 need to be replaced, it is only necessary to open the electrolytic cell outer shell cover 2 and then remove the cathode electrode 9 and the anode electrode 10 from the two connecting plugs 16, making it easier to clean the electrodes.

[0043] refer to Figure 1 、 Figure 2 Both sides of the top of the electrolytic cell outer shell cover 2 are fixedly connected with exhaust pipes 23 respectively connected to the top of the inner cavity of the two electrolytic cell inner shells 3. The two exhaust pipes 23 are provided with a pressure relief valve 233. The exhaust pipe 23 close to the cathode electrode 9 is provided with an oxygen sensor 231, and the exhaust pipe 23 close to the anode electrode 10 is provided with a hydrogen sensor 232. Preferably, the oxygen sensor 231 is an electrochemical oxygen sensor, and the hydrogen sensor 232 is a thermal conductivity hydrogen sensor.

[0044] The exhaust pipe 23 at one end of the anode can be used to discharge oxygen, while the exhaust pipe 23 at the other end of the anode can be used to discharge hydrogen. The pressure relief valve 233 can release excessive gas pressure inside the shell 3 of the electrolytic cell. At the same time, the sensors on the two exhaust pipes 23 can monitor the hydrogen and oxygen content of the two in real time to avoid safety accidents. At the same time, they can judge the integrity of the proton exchange membrane 7 for timely replacement.

[0045] refer to Figure 3 The top of the electrolytic cell cover 2 is bolted with a heat dissipation net 24 used in conjunction with the reduction motor 11. Inside the electrolytic cell cover 2, a sealing ring 25 is provided on the surface of the connecting plug 16, which is sleeved with the connecting plug 16. This provides a seal between the electrolytic cell shell 1 and the electrolytic cell cover 2 to prevent the internal seawater from leaking out.

[0046] refer to Figure 3 、 Figure 4 The inner surfaces of the rotating cylinder 13 and the connecting plug 16 are both clamped with an insulating sleeve 26 that is slidably connected to the conductive rod 19. It is used to insulate the surface of the electrode cap 18 and the conductive rod 19 to prevent power from being transmitted to the electrolytic cell.

[0047] The rotating cylinder 13 is engaged with the connecting plug 16 by means of the diamond-shaped plug rod 15, so that the rotating cylinder 13 can drive the connecting plug 16 to rotate synchronously. Then, the reduction motor 11 is turned on to drive the first gear 12 to engage with the second gear 14, so that the second gear 14 drives the rotating cylinder 13 to rotate inside the electrolytic cell outer shell cover 2, so that the rotating cylinder 13 can drive the connecting plug 16 to rotate synchronously, thereby causing the cathode electrode 9 and the anode electrode 10 to rotate inside the two electrolytic cell inner shells 3 respectively, thereby enhancing the flow force of seawater on the surfaces of the cathode electrode 9 and the anode electrode 10 and reducing the adhesion of bubbles to the surfaces of the cathode electrode 9 and the anode electrode 10; During the rotation of the connecting plug 16, the conductive rod 19 is driven to rotate synchronously, and the conductive rod 19 is rotationally connected to the electrode cap 18. Therefore, electricity can be connected through the non-rotating electrode cap 18, and conduction is carried out through the conductive rod 19, thereby transmitting electricity to the rotating anode electrode 10 and cathode electrode 9. At the same time, the insulating seat 17 and the insulating sleeve 26 are used to insulate the surfaces of the conductive rod 19 and the electrode cap 18. Example 3

[0048] refer to Figure 2 and Figure 6-7 A seawater hydrogen production electrolyzer device, wherein a frame 39 is provided on the outside of the proton exchange membrane 7, and the frame 39 is inserted into the electrolyzer outer shell 1. A slot 30 is provided at the bottom of the electrolyzer outer shell 1, and the frame 39 located at the bottom of the proton exchange membrane 7 is inserted into the slot 30. The bottom of the electrolyzer outer shell 1 is provided with a fixing structure capable of fixing the frame 39.

[0049] The fixing structure includes a fixing groove 33 provided on the side wall of the frame 39, a blind hole 34 is provided on the side wall of the fixing groove 33 facing the slot 30, a fixing pin 36 is slidably provided in the blind hole 34, and a movable rod 35 is horizontally slidably provided at the bottom of the electrolytic cell outer shell 1, one end of the movable rod 35 extends into the blind hole 34 and the end is fixedly connected to the fixing pin 36, and the other end extends to the outside of the electrolytic cell outer shell 1 and the end is provided with a rotating disk 38, and a compression spring 37 is sleeved on the movable rod 35 located in the blind hole 34.

[0050] When the frame 39 needs to be fixed, the rotating disk 38 is pulled outward, and the movable rod 35 slides outward to move the fixing pin 36 away from the fixing slot 33. At this time, the compression spring 37 is compressed, and then the frame 39 is inserted into the slot 30. The rotating disk 38 is released, and the movable rod 35 moves into the slot 30 under the action of the compression spring 37. The fixing pin 36 is inserted into the fixing slot 33 to fix the frame 39, thereby preventing the proton exchange membrane 7 on the frame 39 from being displaced and causing a safety hazard.

[0051] In this embodiment, a plurality of return springs 32 are provided in the slot 30, and a limit block 31 is provided on the side wall of the slot 30. When the bottom of the frame 39 contacts the limit block 31, the fixing pin 36 is inserted into the fixing groove 33, and the return spring 32 is compressed.

[0052] When the frame 39 is inserted into the slot 30 and contacts the limit block 31, the reset spring 32 is compressed and the fixing pin 36 is facing the fixing slot 33. You only need to release the rotating disk 38. Under the action of the compression spring 37, the movable rod 35 can drive the fixing pin 36 to be inserted into the fixing slot 33 to fix the frame 39. When the proton exchange membrane 7 in the frame 39 is needed, you only need to pull the rotating disk 38 outward to move the fixing pin 36 away from the fixing slot 33. Under the action of the reset spring 32, the frame 39 is pushed upward so that the top of the frame 39 is exposed from the top of the electrolytic cell outer shell 1 for easy removal.

Claims

1. A seawater hydrogen production electrolyzer device, comprising an electrolyzer outer shell (1), characterized in that: Two electrolytic cell inner shells (3) are respectively provided on both sides of the interior of the electrolytic cell outer shell (1), and an electrolytic cell outer shell cover (2) is installed on the top of the electrolytic cell outer shell (1); A first communicating hole (4) is provided on each side of the two electrolytic cell inner shells (3) that are close to each other, and a proton exchange membrane (7) movably connected to the electrolytic cell outer shell (1) is provided between the two first communicating holes (4), and both sides of the proton exchange membrane (7) are filled with a catalyst layer (8); The interiors of the two electrolytic cell inner shells (3) are both fixedly connected to an inner partition (5), and a second communication hole (6) is opened at one end of the inner partition (5) away from the proton exchange membrane (7). The interiors of the two electrolytic cell inner shells (3) are respectively fixedly connected to a cathode electrode (9) and an anode electrode (10) that are slidably connected to the inner partition (5).

2. A seawater hydrogen production electrolyzer device according to claim 1, characterized in that: The electrolytic cell housing cover (2) is provided with a mounting cavity (27), a reduction motor (11) is installed on the top of the electrolytic cell housing cover (2), a rotating shaft (28) is rotatably provided in the mounting cavity (27), the upper end of the rotating shaft (28) is transmission-connected to the output end of the reduction motor (11), and a first gear (12) is fixedly provided on the rotating shaft (28); The tops of the cathode electrode (9) and the anode electrode (10) are both threadedly connected to a connecting plug (16) that is rotatably connected to the electrolytic cell outer shell cover (2). The cathode electrode (9) and the anode electrode (10) are respectively fixed in the two connecting plugs (16). Rotating cylinders (13) are rotatably arranged in the mounting cavities (27) on both sides of the first gear (12). The outer side of the rotating cylinder (13) is fixedly sleeved with a second gear (14) that meshes with the first gear (12).

3. A seawater hydrogen production electrolyzer device according to claim 2, characterized in that: A diamond-shaped plug rod (15) is welded to the bottom of the rotating cylinder (13) and is slidably plugged into the connecting plug cylinder (16). An insulating seat (17) is provided on the top of the rotating cylinder (13) and is bolted to the outer shell cover (2) of the electrolytic cell. An electrode cap (18) is clamped inside the insulating seat (17). Conductive rods (19) are provided through the interiors of the two connecting plug cylinders (16) and are electrically connected to the cathode electrode (9) and the anode electrode (10) respectively. The top of the conductive rod (19) penetrates the rotating cylinder (13) and is rotatably connected to the bottom of the electrode cap (18).

4. The seawater hydrogen production electrolyzer device according to claim 1, characterized in that: A seawater outlet valve (22) and a seawater inlet valve (21) communicating with the interiors of the two electrolytic cell inner shells (3) are respectively installed on the top and bottom sides of the electrolytic cell outer shell (1), a heating cylinder (211) is connected between the seawater inlet valve (21) and the side wall of the electrolytic cell outer shell (1), a heating wire (212) is provided in the heating cylinder (211), and a temperature sensor (44) is installed near the bottom of the electrolytic cell inner shell (3) near the seawater inlet valve (21).

5. The seawater hydrogen production electrolyzer device according to claim 1, characterized in that: A frame (39) is provided on the outside of the proton exchange membrane (7), and the frame (39) is inserted into the outer shell (1) of the electrolyzer. A slot (30) is provided at the bottom of the outer shell (1) of the electrolyzer. The frame (39) located at the bottom of the proton exchange membrane (7) is inserted into the slot (30). A fixing structure capable of fixing the frame (39) is provided at the bottom of the outer shell (1) of the electrolyzer.

6. A seawater hydrogen production electrolyzer device according to claim 5, characterized in that: The fixing structure includes a fixing groove (33) provided on a side wall of the frame (39), a blind hole (34) provided on a side wall of the fixing groove (33) facing the slot (30), a fixing pin (36) slidably provided in the blind hole (34), a movable rod (35) slidably provided at the bottom of the electrolytic cell outer shell (1), one end of the movable rod (35) extending into the blind hole (34) and fixedly connected to the fixing pin (36), and the other end extending out of the electrolytic cell outer shell (1) and provided with a rotating disk (38), and a compression spring (37) sleeved on the movable rod (35) located in the blind hole (34).

7. A seawater hydrogen production electrolyzer device according to claim 6, characterized in that: A plurality of return springs (32) are provided in the slot (30), and a limit block (31) is provided on the side wall of the slot (30). When the bottom of the frame (39) contacts the limit block (31), the fixing pin (36) is inserted into the fixing slot (33), and the return spring (32) is compressed.

8. The seawater hydrogen production electrolyzer device according to claim 1, characterized in that: The catalyst layer (8) on the side of the proton exchange membrane (7) close to the anode electrode (10) is an anode catalyst, and the catalyst layer (8) on the side of the proton exchange membrane (7) close to the cathode electrode (9) is a cathode catalyst.

9. The seawater hydrogen production electrolyzer device according to claim 1, characterized in that: Exhaust pipes (23) are fixedly connected to both sides of the top of the electrolytic cell outer shell cover (2) and are respectively connected to the top of the inner cavity of the two electrolytic cell inner shells (3). The two exhaust pipes (23) are each provided with a pressure relief valve (233). The exhaust pipe (23) close to the cathode electrode (9) is provided with an oxygen sensor (231), and the exhaust pipe (23) close to the anode electrode (10) is provided with a hydrogen sensor (232).

10. The seawater hydrogen production electrolyzer device according to claim 1, characterized in that: A capacitive liquid level sensor (40) is provided on the top of the electrolytic cell outer shell cover (2), a rehydration pump (41) is provided on the outside of the electrolytic cell outer shell (1), and a spare seawater outlet valve (43) communicating with the inside of the electrolytic cell inner shell (3) is installed on the side of the bottom of the electrolytic cell outer shell (1) close to the seawater inlet valve (21). The outlet pipe of the rehydration pump (41) is connected to the spare seawater outlet valve (43), and the inlet pipe of the rehydration pump (41) is connected to the external seawater.

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