Multi-chambered transparent electrolyzer for alkaline electrolyzed water

Abstract

The application provides a multi-chamber transparent electrolytic tank for alkaline electrolytic water, and relates to the field of electrolytic tanks.The adopted scheme is: comprising: an anode end plate assembly, the anode end plate assembly comprises an anode end plate and an anode conductive ring, the anode end plate adopts transparent and non-conductive material; a cathode end plate assembly, the cathode end plate assembly comprises a cathode end plate and a cathode conductive ring, the cathode end plate adopts transparent and non-conductive material, and a tension bolt is penetrated between the cathode end plate and the anode end plate; a composite electrode plate is arranged between two adjacent electrolytic chambers, the composite electrode plate comprises an anode electrode frame and a cathode electrode frame, the anode electrode frame and the cathode electrode frame adopt transparent and non-conductive material, and a conductive plate is arranged between the anode electrode frame and the cathode electrode frame.The application can directly observe the change of the internal flow field and the electrode from the end and the peripheral part.

Description

Technical Field

[0001] This invention relates to the field of electrolyzers, and more particularly to a multi-chamber transparent electrolyzer for alkaline water electrolysis. Background Technology

[0002] An alkaline water electrolyzer is a device that uses direct current to electrolyze water to produce hydrogen and oxygen. The electrolyte is typically a potassium hydroxide (KOH) solution. Under the influence of direct current, water molecules undergo electrochemical reactions at the electrodes. At the cathode electrode, water molecules are decomposed into hydrogen ions and hydroxide ions. Hydrogen ions gain electrons to form hydrogen atoms, which further generate hydrogen molecules. Hydroxide ions, under the influence of the electric field, pass through a porous membrane to reach the anode electrode. At the anode electrode, hydroxide ions undergo oxidation to produce oxygen and protons. The protons remain in the solution and continue to circulate.

[0003] In existing technologies, the main body of an alkaline electrolyzer is assembled from components such as end plates, sealing gaskets, electrode plates, electrodes, and diaphragms. The electrolyzer includes dozens or even hundreds of electrolysis chambers, which are pressed together by screws and end plates to form a cylindrical or square shape. The end plates tightly fix the various components of the electrolyzer together to form an integral structure. Through the cooperation of screws and other connectors with the end plates, pressure is applied to each component to keep them tightly connected, preventing displacement or loosening due to internal pressure or other external forces during electrolysis, and ensuring the sealing and stability of the electrolyzer. The electrode plates generally include main electrode plates and electrode frames. The main electrode plates are usually made of cast iron, nickel, or stainless steel metal plates, which are machined and stamped into a protruding structure. After being connected to the metal electrode frame, they are nickel-plated. The electrode plates can support the electrodes and diaphragms, and are also used for electrolyte injection, zoned flow, and power transmission. The end plate material of the electrolyzer needs to have good mechanical strength, and is generally made of metal materials such as stainless steel or titanium alloy.

[0004] With the above technical solutions, since the end plates, electrode frames, and main electrode plates are all made of conductive metal materials, it is impossible to observe the internal electrolysis and flow field conditions in multi-chamber electrolyzers. However, observing the flow field and electrode changes in alkaline water electrolysis tanks is crucial for optimizing the design and operation of electrolyzers, improving electrolysis efficiency and stability, and reducing costs. Therefore, it is evident that existing alkaline electrolyzers still restrict the development of water electrolysis hydrogen production technology. Summary of the Invention

[0005] To address the technical problem that existing multi-chamber electrolyzers cannot observe internal flow field and electrode changes, this invention provides a multi-chamber transparent electrolyzer for alkaline water electrolysis, which allows for direct observation of internal flow field and electrode changes from the end and outer periphery.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a multi-chamber transparent electrolyzer for alkaline water electrolysis, comprising an anode end plate assembly, wherein the anode end plate assembly includes an anode end plate and an anode conductive ring, the anode end plate being made of a transparent and non-conductive material, and the anode conductive ring being used to connect to the positive terminal of a power supply; a cathode end plate assembly, wherein the cathode end plate assembly includes a cathode end plate and a cathode conductive ring, the cathode end plate being made of a transparent and non-conductive material, and the cathode conductive ring being used to connect to the negative terminal of a power supply, and a tie bolt passing through the cathode end plate and the anode end plate; an electrolysis chamber, wherein at least two electrolysis chambers are provided, each electrolysis chamber including an anode electrode, a diaphragm, and a cathode electrode, and multiple electrolysis chambers are arranged between the anode end plate assembly and the cathode end plate assembly; and a composite electrode plate, wherein at least two composite electrode plates are provided, the composite electrode plates being arranged between two adjacent electrolysis chambers, each composite electrode plate including an anode electrode frame and a cathode electrode frame, the anode electrode frame and the cathode electrode frame being made of a transparent and non-conductive material, and a conductive plate being arranged between the anode electrode frame and the cathode electrode frame.

[0007] This invention, by using transparent, non-conductive cathode and anode plates, cathode and anode frames, ensures that the internal gas flow and electrode changes can be clearly observed from the ends and circumference of the electrolytic cell, facilitating the optimization of the electrolytic cell design. Furthermore, the placement of cathode conductive rings, anode conductive rings, and conductive plates enables the input and transmission of current within the electrolytic cell, compensating for the shortcomings of using transparent, non-conductive materials and ensuring smooth operation of the electrolytic cell. Additionally, the use of non-conductive materials significantly reduces bypass current, stray current, and parasitic current, improving energy efficiency and greatly enhancing electrolysis efficiency.

[0008] Furthermore, support nets are respectively provided on both sides of the electrolysis chamber. The support net near the cathode end plate is an integrated structure with the cathode end plate, and the support net near the anode end plate is an integrated structure with the anode end plate.

[0009] This invention simplifies the structure and facilitates the assembly of the electrolytic cell by integrating the corresponding support mesh with the anode and cathode end plates.

[0010] Furthermore, both the support mesh near the cathode end plate and the support mesh near the anode end plate include bosses. Multiple protrusions are evenly arranged on the end face of the bosses. The protrusions are cylindrical or conical in shape. The two bosses are integrated with the anode end plate and the cathode end plate, respectively. The two bosses are located in the inner rings of the anode conductive ring and the cathode conductive ring, respectively.

[0011] This invention achieves the technical effects of optimizing the flow field and improving the uniformity of current distribution by setting protrusions.

[0012] Furthermore, sealing gaskets are provided between the anode end plate and the anode conductive ring, between the diaphragm and the cathode electrode, between the anode frame and the cathode frame, and between the cathode conductive ring and the cathode end plate. Sealing groove group one and sealing groove group two are provided on the end face of the cathode frame facing the cathode end plate and the end face of the anode frame facing the anode end plate. Sealing groove group three is provided on the end face of the cathode frame facing the anode end plate, the end face of the anode frame facing the cathode end plate, the end face of the anode conductive ring facing the cathode end plate, and the end face of the cathode conductive ring facing the anode end plate. A gap is provided between sealing groove group one and sealing groove group two. Sealing groove group one is located near its edge. Sealing groove group one, sealing groove group two, and sealing groove group three each include multiple sealing grooves. Sealing groove group one and sealing groove group three are arranged opposite to each other.

[0013] This invention improves the sealing performance of the electrolytic cell by setting up a sealing gasket, a first sealing groove group, a second sealing groove group, and a third sealing groove group, thereby preventing leakage and cross-contamination of alkaline water, oxygen, and hydrogen.

[0014] Furthermore, four flow channel holes are provided on the anode conductive ring, the cathode conductive ring, the cathode electrode frame, and the anode electrode frame, and clearance holes are provided on the sealing gasket at corresponding positions. Two guide grooves are provided on the end face of the anode conductive ring facing the cathode electrode assembly, the end face of the cathode conductive ring facing the anode electrode assembly, the end face of the cathode electrode frame facing the anode electrode assembly, and the end face of the anode electrode frame facing the cathode electrode assembly. One guide groove is used to output alkaline water from the flow channel hole to the anode electrode or the cathode electrode, and the other guide groove is used to transport gas to the flow channel hole. The guide grooves on the cathode electrode frame and the anode electrode frame in the same composite electrode plate are staggered.

[0015] This invention enables alkaline water to flow smoothly to each electrolysis chamber by setting guide grooves and flow channels, ensuring smooth electrolysis. At the same time, it can separate hydrogen and oxygen to prevent cross-contamination and improve safety.

[0016] Furthermore, two anti-clogging grooves are provided on the end face of the anode conductive ring facing the cathode end plate assembly, the end face of the cathode conductive ring facing the anode end plate assembly, the end face of the cathode frame facing the anode end plate assembly, and the end face of the anode frame facing the cathode end plate assembly. The two anti-clogging grooves are respectively connected to the corresponding guide grooves. The depth of the anti-clogging groove is less than the depth of the guide groove. A support plate is provided in the anti-clogging groove, and the support plate spans the corresponding guide groove.

[0017] The present invention, by setting an anti-blocking groove and a support plate, can provide a certain space between the support plate and the guide groove, thereby preventing the sealing gasket from being completely blocked by pressure deformation and effectively ensuring the flow capacity of the guide groove.

[0018] Furthermore, the cathode end plate is provided with four through holes, each corresponding to a flow channel hole, and the through holes are connected to a pipe.

[0019] Furthermore, the cathode end plate is provided with four through holes, each corresponding to a flow channel hole, and the through holes are connected to a pipe.

[0020] This invention, by setting an acceleration tank, increases the cross-section of the flow channel when gas and alkaline water enter the through hole, thereby increasing the flow rate. On the one hand, it allows for a clearer observation of the flow field, and on the other hand, it increases the flow rate of alkaline water, improves heat exchange efficiency, and avoids excessive temperature rise.

[0021] Furthermore, the male end plate is provided with four mounting pin holes, each corresponding to a flow channel hole.

[0022] This invention improves assembly efficiency by providing assembly pin holes, which enable positioning via insertion positioning pins during the assembly of electrolytic cells.

[0023] Furthermore, the anode end plate, the cathode end plate, the anode frame, and the cathode frame are all made of quartz glass, and the anode conductive ring, the cathode conductive ring, and the conductive plate are all made of nickel-plated carbon steel.

[0024] This invention achieves lightweight electrolytic cells by using quartz glass and nickel-plated carbon steel plates instead of metal end plates and electrode plates in the prior art.

[0025] As can be seen from the above technical solutions, the present invention has the following advantages:

[0026] This invention provides a multi-chamber transparent electrolyzer for alkaline water electrolysis. By using transparent, non-conductive cathode and anode plates, cathode and anode frames, the internal gas flow and electrode changes can be clearly observed from the end and circumference of the electrolyzer, facilitating optimization of the electrolyzer design. Furthermore, the placement of cathode conductive rings, anode conductive rings, and conductive plates enables current input and transmission within the electrolyzer, compensating for the shortcomings of using transparent, non-conductive materials and ensuring smooth operation. Additionally, the use of non-conductive materials significantly reduces bypass current, stray current, and parasitic current, improving energy efficiency and greatly enhancing electrolysis efficiency. Integrating the corresponding support mesh with the anode and cathode plates simplifies the structure and facilitates electrolyzer assembly. The inclusion of protrusions optimizes the flow field and improves the uniformity of current distribution. The use of sealing gaskets and sealing grooves further enhances the electrolysis process. Group 1, Group 2, and Group 3 of sealing grooves enhance the sealing performance of the electrolytic cell, preventing leakage and cross-contamination of alkaline water, oxygen, and hydrogen. The guide grooves and flow channels allow alkaline water to flow smoothly to each electrolysis chamber, ensuring unimpeded electrolysis. Simultaneously, hydrogen and oxygen are separated to prevent cross-contamination and improve safety. The anti-clogging grooves and support plates provide sufficient space between the support plate and the guide grooves, preventing the sealing gasket from completely blocking the guide grooves due to pressure deformation, effectively ensuring the flow capacity of the guide grooves. The acceleration grooves increase the cross-section of the flow channel when gas and alkaline water enter the through-holes, thereby increasing the flow rate. This allows for clearer observation of the flow field and increases the flow velocity of the alkaline water, improving heat exchange efficiency and preventing excessive temperature rise. Replacing the metal end plates and electrode plates in existing technologies with quartz glass and nickel-plated carbon steel plates achieves a lightweight electrolytic cell. Attached Figure Description

[0027] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0029] Figure 2 This is an exploded view of a specific embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the anode plate in a specific embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the end face of the anode plate facing the cathode plate assembly in a specific embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the cathode end plate in a specific embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the end face of the cathode end plate facing the anode end plate assembly in a specific embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of the end face of the anode conductive ring facing the anode extreme plate assembly in a specific embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the end face of the anode conductive ring facing the cathode end plate assembly in a specific embodiment of the present invention.

[0036] Figure 9 This is a schematic diagram of the end face of the cathode conductive ring facing the anode end plate assembly in a specific embodiment of the present invention.

[0037] Figure 10 This is a schematic diagram of the structure of the end face of the cathode conductive ring facing the cathode end plate assembly in a specific embodiment of the present invention.

[0038] Figure 11 This is a schematic diagram of the end face of the anode frame facing the anode end plate assembly in a specific embodiment of the present invention.

[0039] Figure 12 This is a schematic diagram of the end face of the anode frame facing the cathode end plate assembly in a specific embodiment of the present invention.

[0040] Figure 13 This is a schematic diagram of the end face of the cathode frame facing the anode end plate assembly in a specific embodiment of the present invention.

[0041] Figure 14 This is a schematic diagram of the end face of the cathode frame facing the cathode end plate assembly in a specific embodiment of the present invention.

[0042] In the diagram, 1. Tightening bolt; 2. Anode end plate assembly; 201. Anode end plate; 2011. Assembly pin hole; 202. Anode conductive ring; 3. Composite electrode plate; 301. Cathode electrode frame; 302. Conductive plate; 304. Anode electrode frame; 4. Sealing gasket; 5. Cathode end plate assembly; 501. Cathode conductive ring; 502. Cathode end plate; 5021. Through hole; 5022. Acceleration tank; 6. Electrolysis chamber; 601. Anode electrode; 602. Diaphragm; 603. Cathode electrode; 604. Support mesh; 7. Sealing groove group one; 9. Connecting hole; 10. Boss; 11. Protrusion; 12. Connecting plate; 13. Sealing groove group four; 14. Flow channel hole; 15. Sealing groove group three; 16. Anti-clogging groove; 17. Guide groove; 18. Mounting groove two; 19. Mounting groove one; 20. Sealing groove group two. Detailed Implementation

[0043] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0044] like Figure 1 and Figure 2As shown in the figure, this specific embodiment provides a multi-chamber transparent electrolyzer for alkaline water electrolysis, including an anode plate assembly 2, a cathode plate assembly 5, an electrolysis chamber 6, and a composite electrode plate 3; the anode plate assembly 2 includes an anode plate 201 and an anode conductive ring 202, the anode plate 201 is made of transparent and non-conductive material, and the anode conductive ring 202 is used to connect to the positive terminal of the power supply; the cathode plate assembly 5 includes a cathode plate 502 and a cathode conductive ring 501, the cathode plate 502 is made of transparent and non-conductive material, and the cathode conductive ring 501 is used to connect to the negative terminal of the power supply, and a tie bolt passes through the cathode plate 502 and the anode plate 201; at least two electrolysis chambers 6 are provided, each including an anode electrode, a diaphragm 602, and a cathode electrode, and multiple electrolysis chambers 6 are arranged between the anode plate assembly 2 and the cathode plate assembly 5. At least two composite electrode plates 3 are provided, which are disposed between two adjacent electrolysis chambers 6. The composite electrode plate 3 includes an anode frame 304 and a cathode frame 301. The anode frame 304 and the cathode frame 301 are made of transparent and non-conductive material. A conductive plate 302 is provided between the anode frame 304 and the cathode frame 301. In this specific embodiment, the anode conductive ring 202, the cathode conductive ring 501, the anode frame 304, and the cathode frame 301 are all annular structures. The inner rings of the four provide space for the corresponding electrolysis reactions. The anode conductive ring 202 is close to the anode electrode 601 of the adjacent electrolysis chamber 6, the cathode frame 301 is close to the cathode of the adjacent electrolysis chamber 6, the anode frame 304 is close to the anode of the adjacent electrolysis chamber 6, and the cathode conductive ring 501 is close to the cathode electrode 603 of the adjacent electrolysis chamber 6.

[0045] This specific embodiment solves the conductivity problem when using non-conductive materials by using a transparent, non-conductive cathode end plate 502, anode end plate 201, cathode frame 301, and anode frame 304, as well as conductive cathode conductive ring 501, anode conductive ring 202, and conductive plate 302. It enables real-time observation of the electrolysis process (such as bubble generation, electrolyte flow, and diaphragm 602 status), real-time monitoring of the electrolysis reaction dynamics, facilitating experimental research, teaching demonstrations, and industrial process monitoring. It can quickly identify problems such as electrode passivation, diaphragm 602 blockage, or short circuits, improving maintenance efficiency. Furthermore, the transparent, non-conductive material is generally non-metallic, which greatly reduces the weight of the electrolytic cell, achieving lightweight design. In addition, the non-conductive material greatly reduces stray current, bypass current, and parasitic current, avoiding energy loss and improving the electrolysis efficiency of alkaline water.

[0046] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in this specific embodiment, support nets 604 are respectively provided on both sides of the electrolysis chamber 6. Furthermore, to simplify the structure of the electrolytic cell and facilitate assembly, the support net 604 near the cathode end plate 502 is an integrated structure with the cathode end plate 502, and the support net 604 near the anode end plate 201 is an integrated structure with the anode end plate 201. Specifically, both the support net 604 near the cathode end plate 502 and the support net 604 near the anode end plate 201 include a boss 10. Multiple protrusions 11 are evenly provided on the end face of the boss 10. The protrusions 11 are cylindrical or conical. In this specific embodiment, the boss 10 is a cylindrical structure. The two bosses 10 are integrated with the anode end plate 201 and the cathode end plate 502 respectively. The two bosses 10 are located on the anode end plate 201 and the cathode end plate 502 respectively. The inner rings of the conductive ring 202 and the cathode conductive ring 501, and the material of the boss 10 are the same as the material of the cathode end plate 502 or the anode end plate 201. By setting the cylindrical protrusion 11, the current can be more evenly distributed on the anode electrode 601 or the cathode electrode 603, reducing contact resistance, reducing the situation of excessively high or low local current density, improving electrolysis efficiency, and reducing energy consumption. In addition, the cylindrical protrusion 11 and the surface of the boss 10 form a specific flow channel. When alkaline water enters the flow channel, it needs to pass through the bending gap between the protrusions 11, which helps to enhance the degree of flow disturbance, reduce the concentration difference of alkaline water in various parts of the flow channel, and make the alkaline water distribution more uniform. At the same time, it also helps to remove oxygen and hydrogen, reduce the adhesion of bubbles on the electrode surface, and improve the efficiency and stability of the electrolysis reaction.

[0047] like Figure 8 and Figure 12 As shown, in this specific embodiment, mounting groove 19 and mounting groove 28 are provided on the end face of the anode conductive ring 202 facing upward towards the cathode end plate assembly 5 and on the end face of the anode frame 304 facing towards the cathode end plate assembly 5. The diameter of mounting groove 19 is smaller than that of mounting groove 28. Mounting groove 19 is used to place the anode electrode 601 of the adjacent electrolysis chamber 6, and mounting groove 28 is used to place the diaphragm 602 of the adjacent electrolysis chamber 6. The support mesh 604 is provided in the inner ring of the anode frame 304 or the cathode frame 301.

[0048] like Figures 4 to 14As shown, in this specific embodiment, the metal end plates in the prior art are replaced by the anode end plate assembly 2 and the cathode end plate assembly 5, and the metal end plates in the prior art are replaced by the composite electrode plate 3. Although this achieves visualization, it introduces more gaps. Therefore, to avoid leakage of alkaline water and gas, sealing gaskets 4 are provided between the anode end plate 201 and the anode conductive ring 202, between the anode electrode frame 304 and the cathode electrode frame 301, and between the cathode conductive ring 501 and the cathode end plate 502. By providing sealing gaskets 4 at these locations, leakage due to gaps is greatly avoided. At the same time, the diaphragm 602 and the cathode A sealing gasket 4 is also provided between the electrodes 603. To further enhance the sealing performance, a first sealing groove group 7 and a second sealing groove group 20 are provided on the end face of the cathode frame 301 facing the cathode end plate 502 and the end face of the anode frame 304 facing the anode end plate 201. A gap is provided between the first sealing groove group 7 and the second sealing groove group 20. The first sealing groove group 7 is located near the edge on the end face of the cathode frame 301 facing the anode end plate 201, the end face of the anode frame 304 facing the cathode end plate 502, the end face of the anode conductive ring 202 facing the cathode end plate 502, and the end face of the cathode conductive ring 501 facing the anode end plate 201. Each of the components is provided with a sealing groove group three 15. Sealing groove groups four 13 are provided on the end face of the anode conductive ring 202 facing the anode end plate 201, the end face of the cathode conductive ring 501 facing the cathode end plate 502, the end face of the cathode end plate 502 facing the anode end plate 201, and the end face of the anode end plate 201 facing the cathode end plate assembly 5. By providing sealing groove group one 7, the sealing performance at the edges of the cathode electrode frame 301 and the anode electrode frame 304 can be enhanced, preventing alkaline water leakage. By providing sealing groove two 7, the sealing performance at the inner edge of the cathode electrode frame 301 and the anode electrode frame 304 can be enhanced, preventing oxygen generated on both ends of the composite electrode plate 3. Gas and hydrogen can cross-contaminate. By setting up sealing groove group three 15, the sealing performance between composite electrode plate 3 and adjacent electrolysis chamber 6, as well as between end plate assembly and adjacent electrolysis chamber 6, can be enhanced to prevent alkaline water leakage. By setting up sealing groove group four 13, the sealing performance of anode end plate assembly 2 and cathode end plate assembly 5 can be improved to prevent alkaline water leakage. Sealing groove group one 7, sealing groove group two 20, sealing groove group three 15 and sealing groove group four 13 all include multiple sealing grooves. Sealing groove group one 7 and sealing groove group three 15 are arranged opposite to each other. The multi-ring sealing grooves form a labyrinth-like sealing structure, which greatly increases the complexity and length of the leakage path and further improves the sealing performance.

[0049] like Figures 7 to 14As shown, to form unobstructed alkaline water and gas flow channels, in this specific embodiment, four flow channel holes 14 are provided on the anode conductive ring 202, cathode conductive ring 501, cathode electrode frame 301, and anode electrode frame 304, distributed in pairs at the top and bottom. The two flow channel holes 14 at the bottom are used for alkaline water flow, and the two flow channel holes 14 at the top are used for hydrogen and oxygen flow, respectively. Clearance holes are provided at corresponding positions on the sealing gasket 4. To facilitate communication with the inner ring area for electrolysis and gas collection, two guide grooves 17 are provided on the end face of the anode conductive ring 202 facing the cathode electrode assembly 5, the end face of the cathode conductive ring 501 facing the anode electrode assembly 2, the end face of the cathode electrode frame 301 facing the anode electrode assembly 2, and the end face of the anode electrode frame 304 facing the cathode electrode assembly 5. One of the guide grooves 17 is used to output alkaline water through the flow channel hole 14 to the area where the anode electrode 601 or cathode electrode 603 is located in the inner ring. In the region, another guide groove 17 is used to transport gas to the flow channel hole 14. It can be understood that the flow channel and the guide groove 17 are set between the sealing groove group 1 7 and the sealing groove group 2 20. In order to ensure effective flow separation, the guide grooves 17 on the cathode frame 301 and the anode frame 304 in the same composite electrode plate 3 are staggered. In this way, on one anode end face of the composite electrode plate 3 (near the anode electrode 601), alkaline water can only enter the corresponding area through the lower guide groove 17 to carry out the oxidation reaction. The generated oxygen can only enter the oxygen flow hole through the guide groove 17 on the anode end face and cannot enter the hydrogen flow hole. On the cathode end face of the composite electrode plate 3 (near the cathode electrode 603), alkaline water can only enter the corresponding area through the lower guide groove 17 to carry out the reduction reaction. The generated hydrogen can only enter the hydrogen flow hole through the guide groove 17 on the cathode end face and cannot enter the oxygen flow hole. This achieves hydrogen and oxygen separation and avoids cross-contamination.

[0050] like Figure 8 , Figure 9As shown, due to the presence of multiple sealing gaskets 4, which are typically made of polyurethane, they deform under pressure after the tie bolts are tightened. Furthermore, under the action of sealing groove group 1 7 and sealing groove group 3 15, the elastic deformation increases, causing the sealing gaskets 4 to bulge and enter the guide groove 17, affecting the flowability of the guide groove 17. To solve this technical problem, the end face of the anode conductive ring 202 facing the cathode end plate assembly 5, the end face of the cathode conductive ring 501 facing the anode end plate assembly 2, the end face of the cathode frame 301 facing the anode end plate assembly 2, and the end face of the anode frame 304 facing... Two anti-clogging grooves 16 are provided on the end face of the negative end plate assembly 5. The two anti-clogging grooves 16 are respectively connected to the corresponding guide grooves 17. The depth of the anti-clogging groove 16 is less than the depth of the guide groove 17. A support plate is provided in the anti-clogging groove 16, and the support plate spans the corresponding guide groove 17. In this specific embodiment, the support plate is made of stainless steel. When the sealing gasket 4 is deformed, it can only be pressed on the support plate. The support plate is pressed on the bottom of the anti-clogging groove 16. However, since the anti-clogging groove 16 is shallow, there is a gap between the support plate and the bottom of the guide groove 17, which can still ensure the flow of gas and liquid.

[0051] like Figure 3 and Figure 4 As shown, in this specific embodiment, to achieve the entry and reflux of alkaline water and the collection of oxygen and hydrogen, four through holes 5021 are provided on the cathode end plate 502. The through holes 5021 correspond one-to-one with the flow channel holes 14, and the through holes 5021 are connected to pipes. Specifically, the through holes 5021 are stepped holes, and the inner wall of the larger end of the stepped hole is provided with threads for connecting pipe joints. In order to increase the flow rate of gas and liquid, four through holes 5021 are provided on the cathode end plate 502. The through holes 5021 correspond one-to-one with the flow channel holes 14, and the through holes 5021 are connected to pipes. By setting the acceleration groove 5022, the cross-section of the flow channel can be expanded when entering the through hole 5021, and the flow of oxygen, hydrogen and alkaline water can be accelerated. On the one hand, the flow field can be observed more clearly, and on the other hand, the flow rate of alkaline water can be increased, the heat exchange efficiency can be improved, and excessive temperature rise can be avoided.

[0052] like Figure 3 As shown, in order to facilitate the assembly of multi-chamber electrolytic cells, four assembly pin holes 2011 are provided on the anode end plate 201. The assembly pin holes 2011 correspond one-to-one with the flow channel holes 14. By setting the assembly pin holes 2011, the electrolytic cells can be positioned by inserting positioning pins during assembly, thereby improving assembly efficiency.

[0053] The anode end plate 201, cathode end plate 502, anode frame 304, and cathode frame 301 can be made of acrylic material. In this specific embodiment, to improve heat resistance, all four are made of quartz glass. The anode conductive ring 202, cathode conductive ring 501, and conductive plate 302 are all made of nickel-plated carbon steel. It can be understood that stainless steel can also be used. By using quartz glass and nickel-plated carbon steel to replace the metal end plates and electrode plates in the prior art, the electrolytic cell can be made lighter.

[0054] In this specific embodiment, a junction plate 12 is welded onto the anode conductive ring 202 and the cathode conductive ring 501. The junction plate 12 is used to connect the power plug. Twelve connection holes 9 are provided on the anode end plate 201 and the cathode end plate 502 for passing through the tension bolt 1.

[0055] As can be seen from the above specific embodiments, the present invention has the following beneficial effects:

[0056] 1. By using transparent, non-conductive materials for the cathode end plate 502, anode end plate 201, cathode frame 301, and anode frame 304, it is possible to visually observe the internal gas flow and electrode changes from the end and circumference of the electrolytic cell, facilitating the optimization of the electrolytic cell design. On the other hand, the placement of the cathode conductive ring 501, anode conductive ring 202, and conductive plate 302 enables the input and transmission of current within the electrolytic cell, compensating for the shortcomings of using transparent, non-conductive materials and ensuring smooth operation of the electrolytic cell. Furthermore, the use of non-conductive materials can significantly reduce the occurrence of bypass current, stray current, and parasitic current, improving energy efficiency and greatly enhancing electrolysis efficiency.

[0057] 2. By integrating the corresponding support mesh 604 with the anode plate 201 and cathode plate 502, the structure is simplified and the electrolytic cell assembly is facilitated; by setting the protrusion 11, the flow field is optimized and the uniformity of current distribution is improved.

[0058] 3. By setting sealing gasket 4, sealing groove group 1 7, sealing groove group 2 20 and sealing groove group 3 15, the sealing performance of the electrolytic cell can be improved, and leakage and cross-contamination of alkaline water, oxygen and hydrogen can be avoided.

[0059] 4. By setting the guide groove 17 and the flow channel hole 14, alkaline water can flow to each electrolysis chamber 6, ensuring smooth electrolysis. At the same time, hydrogen and oxygen can be separated to avoid cross-contamination and improve safety.

[0060] 5. By setting the anti-blocking groove 16 and the support plate, a certain space can be provided between the support plate and the guide groove 17, so as to prevent the sealing gasket 4 from being completely blocked by the guide groove 17 after being deformed by pressure, and effectively ensure the flow capacity of the guide groove 17.

[0061] 6. By setting up the acceleration tank 5022, the cross-section of the flow channel can be increased when gas and alkaline water enter the through hole 5021, thereby increasing the flow rate. On the one hand, the flow field can be observed more clearly, and on the other hand, the flow rate of alkaline water can be increased, improving heat exchange efficiency and avoiding excessive temperature rise.

[0062] 7. By using quartz glass and nickel-plated carbon steel plates to replace the metal end plates and electrode plates in the existing technology, the electrolytic cell can be made lighter.

[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-chamber transparent electrolytic cell for alkaline water electrolysis, characterized in that, include: Anode plate assembly (2), the anode plate assembly (2) includes an anode plate (201) and an anode conductive ring (202), the anode plate (201) is made of transparent and non-conductive material, and the anode conductive ring (202) is used to connect to the positive terminal of the power supply; The cathode end plate assembly (5) includes a cathode end plate (502) and a cathode conductive ring (501). The cathode end plate (502) is made of a transparent and non-conductive material. The cathode conductive ring (501) is used to connect to the negative terminal of the power supply. A tie bolt passes through the cathode end plate (502) and the anode end plate (201). Electrolysis chamber (6), at least two electrolysis chambers (6) are provided, each electrolysis chamber (6) includes an anode electrode (601), a diaphragm (602) and a cathode electrode (603), and multiple electrolysis chambers (6) are provided between the anode end plate assembly (2) and the cathode end plate assembly (5); A composite electrode plate (3) is provided, at least two of which are provided. The composite electrode plate (3) is provided between two adjacent electrolysis chambers (6). The composite electrode plate (3) includes an anode frame (304) and a cathode frame (301). The anode frame (304) and the cathode frame (301) are made of transparent and non-conductive material. A conductive plate (302) is provided between the anode frame (304) and the cathode frame (301). Sealing gaskets (4) are provided between the anode end plate (201) and the anode conductive ring (202), between the diaphragm (602) and the cathode electrode (603), between the anode pole frame (304) and the cathode pole frame (301), and between the cathode conductive ring (501) and the cathode end plate (502). The anode conductive ring (202), the cathode conductive ring (501), the cathode electrode frame (301), and the anode electrode frame (304) are each provided with four flow channel holes (14). The sealing gasket (4) is provided with clearance holes at corresponding positions. The end face of the anode conductive ring (202) facing the cathode end plate assembly (5), the end face of the cathode conductive ring (501) facing the anode end plate assembly (2), the end face of the cathode electrode frame (301) facing the anode end plate assembly (2), and the end face of the anode electrode frame (304) facing the cathode end plate assembly (5) are each provided with two guide grooves (17). One guide groove (17) is used to output alkaline water from the flow channel hole (14) to the anode electrode (601) or the cathode electrode (603), and the other guide groove (17) is used to transport gas to the flow channel hole (14). Two anti-clogging grooves (16) are provided on the end face of the anode conductive ring (202) facing the cathode end plate assembly (5), the end face of the cathode conductive ring (501) facing the anode end plate assembly (2), the end face of the cathode pole frame (301) facing the anode end plate assembly (2), and the end face of the anode pole frame (304) facing the cathode end plate assembly (5). The two anti-clogging grooves (16) are respectively connected to the corresponding guide grooves (17). The depth of the anti-clogging groove (16) is less than the depth of the guide groove (17). A support plate is provided in the anti-clogging groove (16), and the support plate spans the corresponding guide groove (17).

2. The multi-chamber transparent electrolyzer for alkaline water electrolysis as described in claim 1, characterized in that, The electrolysis chamber (6) is provided with support nets (604) on both sides. The support net (604) near the cathode end plate (502) is an integrated structure with the cathode end plate (502), and the support net (604) near the anode end plate (201) is an integrated structure with the anode end plate (201).

3. The multi-chamber transparent electrolytic cell for alkaline water electrolysis as described in claim 2, characterized in that, The support mesh (604) near the cathode end plate (502) and the support mesh (604) near the anode end plate (201) both include bosses (10). Multiple protrusions (11) are evenly arranged on the end face of the bosses (10). The protrusions (11) are cylindrical or conical. The two bosses (10) are integrated with the anode end plate (201) and the cathode end plate (502) respectively. The two bosses (10) are located in the inner rings of the anode conductive ring (202) and the cathode conductive ring (501) respectively.

4. The multi-chamber transparent electrolytic cell for alkaline water electrolysis as described in claim 3, characterized in that, The anode plate (201) is provided with four mounting pin holes (2011), and the mounting pin holes (2011) correspond one-to-one with the flow channel holes (14).

5. The multi-chamber transparent electrolytic cell for alkaline water electrolysis as described in claim 4, characterized in that, The anode end plate (201), the cathode end plate (502), the anode frame (304), and the cathode frame (301) are all made of quartz glass, and the anode conductive ring (202), the cathode conductive ring (501), and the conductive plate (302) are all made of nickel-plated carbon steel.

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