Electrolytic tank cavity structure and small electrolytic chamber thereof

Abstract

The invention provides an electrolytic cell cavity structure and a small electrolytic chamber thereof. The cavity structure of the electrolytic cell is a reaction cavity of the electrolytic cell, the reaction cavity is provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet position is designed to be of a symmetrically-designed groove-shaped structure, and the liquid outlet position is designed to be a straight groove, so that the flowing path of fluid in a small electrolytic chamber can be effectively optimized, the uniformity of a flow field is improved, and the bubble gathering and stagnation phenomena are reduced; therefore, the electrolysis efficiency and the equipment stability are improved. The invention aims to provide a simple, efficient and high-adaptability small electrolysis chamber design, can improve the reaction efficiency and the gas-liquid separation effect in the electrolysis process, and is suitable for various electrolysis processes and equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of alkaline electrolyzers, and particularly to an electrolyzer cavity structure and an electrolysis cell thereof. Background Art

[0002] In the field of electrolysis technology, an electrolyzer is the core device for realizing the electrolysis process, and its performance directly affects the electrolysis efficiency, product quality, and energy consumption. However, the design of existing electrolysis cells has certain defects in the uniformity of the fluid flow field, which are specifically manifested as the following problems:

[0003] (1) Uneven flow field

[0004] Traditional electrolysis cells usually adopt a rectangular or simple planar cavity structure. During the electrolysis process, after the fluid enters the cell, due to uneven fluid distribution and significant velocity differences, local areas with high or low flow velocities are likely to form in certain regions, resulting in uneven current density distribution. This phenomenon directly affects the electrolysis efficiency and may trigger side reactions.

[0005] (2) Poor gas-liquid separation effect

[0006] During the electrolysis process, gases (such as hydrogen and oxygen) are usually generated. In the traditional cell design, due to the unreasonable flow field distribution, the gases are difficult to be effectively separated, and some bubbles may accumulate on the electrode surface, hindering the reaction and reducing the electrode efficiency. In addition, the accumulation of bubbles may cause uneven pressure inside the electrolyzer, posing a potential safety hazard to the equipment.

[0007] (3) Formation of dead corners and stagnant areas

[0008] Another common problem in the traditional cavity design is that the fluid forms dead corners or stagnant areas inside the cell. The flow velocity in these areas is close to zero, which may lead to an increase in the concentration gradient of reactants, reducing the reaction efficiency. At the same time, impurities are easily accumulated, increasing the maintenance cost. Summary of the Invention

[0009] The technical problem to be solved by the present invention is: in order to overcome the problems of uneven flow field, poor gas-liquid separation effect, and fluid retention existing in the prior art, the present invention provides an electrolyzer cavity structure and an electrolysis cell thereof, which optimize the flow path of the fluid inside the electrolysis cell, improve the flow field uniformity, reduce bubble aggregation and stagnation phenomena, thereby improving the electrolysis efficiency and the stability of the equipment.

[0010] The technical solution adopted by the present invention to solve its technical problems is: an electrolytic cell cavity structure, which is the reaction chamber of the electrolytic cell. The reaction chamber is vertically arranged, with the lower end face being the liquid inlet end face and the upper end face being the liquid outlet end face. There are a liquid inlet and a liquid outlet opened on the outer wall of the reaction chamber. The liquid inlet is communicated with the liquid inlet end face, and the liquid outlet is communicated with the liquid outlet end face. The vertical inner wall of the reaction chamber corresponding to the upper edge of the liquid inlet end face is concave inward to form a liquid inlet groove. The lower groove surface of the liquid inlet groove is communicated with a liquid inlet hole. The vertical inner wall of the reaction chamber corresponding to the lower edge of the liquid outlet end face is concave inward to form a liquid outlet groove. The upper groove surface of the liquid outlet groove is communicated with the liquid outlet. The space in the reaction chamber corresponding to the liquid inlet groove and the liquid outlet groove is the electrolyte flow channel. The width of the reaction chamber perpendicular to the overall flow direction of the electrolyte is the flow channel width. The liquid inlet groove is a symmetrically designed groove structure, and the symmetry center of the groove structure is the center of the lower end face of the reaction chamber. The axial length of the liquid inlet groove is greater than the flow channel width. The liquid outlet groove is a straight groove, and the axial width of the straight groove is the same as the flow channel width and is arranged parallel to the flow channel width direction.

[0011] In the above solution, at the liquid inlet position, first, a liquid inlet groove for temporarily storing and filling the electrolyte is designed, and then the liquid inlet groove is used to provide overall liquid supply for the reaction chamber. At the liquid outlet position, the design from the liquid outlet groove to the liquid outlet provides overall liquid discharge. In this electrolytic cell cavity structure, through the design of the liquid inlet groove and the liquid outlet groove, the fluid can be effectively guided when flowing through, and the flow velocity distribution is more uniform. Compared with the single-hole or multi-hole straight-in and straight-out electrolyte flow mode of a common reaction chamber, it can greatly reduce the non-uniformity in fluid flow, avoid the phenomenon of too fast or too slow local flow velocity, thereby improving the uniformity and stability of the electrolysis reaction and enhancing the electrolysis efficiency.

[0012] Further, the bottom shape of the liquid inlet groove is a V-shaped structure with the opening upward, and the tip of the V-shaped structure is the center position of the bottom of the liquid inlet groove. The liquid inlet groove designed with a V-shaped structure avoids the problems of stagnant flow areas and dead corners that are prone to appear in a traditional planar cavity during overall liquid inlet. The fluid can flow smoothly, reducing the adverse impact of the stagnant area on the reaction efficiency and at the same time reducing the deposition risk of impurities inside the cavity.

[0013] Further, liquid inlet holes are symmetrically opened on the lower groove surface of the liquid inlet groove. The liquid inlet holes are communicated with the liquid inlet. The electrolyte enters the liquid inlet groove from the liquid inlet through the liquid inlet holes, and after being stored in the liquid inlet groove, it continues to supply liquid upward to the reaction chamber.

[0014] Correspondingly, on the upper groove surface of the liquid outlet groove, at positions corresponding to the liquid inlet holes, liquid outlet holes are provided one-to-one with the liquid inlet holes in the vertical direction. The liquid outlet holes are communicated with the liquid outlet. Through the correspondingly arranged liquid inlet holes and liquid outlet holes, a more stable flow path is provided for the medium entering the liquid inlet groove and flowing out of the liquid outlet groove, thereby further improving the flow field uniformity in the reaction chamber.

[0015] Preferably, the vertical inner wall of the reaction chamber is recessed near the vertical side wall of the reaction chamber to form an electrode connection chamber, which communicates with the vertical side wall of the reaction chamber. An electrode hole communicating with the outside is formed on the vertical side wall, and an electrode for supplying power to the electrode plate in the reaction chamber is provided in the electrode connection chamber. The tab is arranged in the electrode connection chamber rather than directly in the reaction chamber, so it will not cause excessive interference to the normal flow of the electrolyte, further ensuring the stability and uniformity of the flow field.

[0016] An electrolytic cell includes an anode plate, a cathode plate and a diaphragm. The diaphragm is arranged between the anode plate and the cathode plate. The anode plate, the diaphragm and the cathode plate are closed. An electrolytic cell cavity structure as described above is formed between the inner wall of the anode plate and the diaphragm, and an electrolytic cell cavity structure as described above is formed between the inner wall of the cathode plate and the diaphragm.

[0017] In the design of the electrolytic cell, in the anode reaction chamber and the cathode reaction chamber, by using the electrolytic cell cavity structure, the flow field can be optimized, the stagnant flow area and dead corners can be reduced, and the flow field uniformity can be improved, thereby improving the uniformity and stability of the electrolytic reaction, enhancing the electrolysis efficiency, and effectively improving the overall operation efficiency of the electrolytic cell designed with this electrolytic cell.

[0018] Furthermore, the electrolytic cell includes an anode electrode and a cathode electrode. The anode electrode is arranged in the electrolytic cell cavity structure on the anode plate side, and the cathode electrode is arranged in the electrolytic cell cavity structure on the cathode plate side.

[0019] Furthermore, through holes are evenly spaced on the anode electrode and the cathode electrode respectively. Support plates are provided on the sides of the anode electrode and the cathode electrode corresponding to the direction away from the diaphragm. Protrusions are provided on the support plates to support the electrodes and the surfaces of the support plates. The through holes and the protrusions are distributed in a staggered manner.

[0020] Still further, the inner walls of the anode plate and the vertical inner wall of the cathode plate are recessed near the vertical side wall to form an electrode connection chamber, which communicates with the vertical side wall of the reaction chamber. An electrode hole communicating with the outside is formed on the vertical side wall, and a tab connected to the corresponding electrode plate is provided in the electrode connection chamber. The tab is electrically connected to the external circuit through the electrode hole on this side.

[0021] The beneficial effects of the present invention are as follows. In the design of the electrolytic cell cavity structure provided by the present invention, the liquid inlet position is designed as a V-shaped liquid inlet groove, and the liquid outlet position is designed as a straight groove. In this way, the flow path of the fluid in the electrolytic cell can be effectively optimized, the flow field uniformity can be improved, the bubble aggregation and stagnation phenomena can be reduced, and thus the electrolysis efficiency and the stability of the equipment can be enhanced. The present invention aims to provide a simple, efficient and highly adaptable electrolytic cell design, which can improve the reaction efficiency and gas-liquid separation effect during the electrolysis process and is applicable to various electrolysis processes and equipment. Description of the Drawings

[0022] The present invention will be further described below with reference to the drawings and embodiments.

[0023] Figure 1 It is a schematic structural diagram of the electrolytic cell cavity structure of the present invention on the electrode plate.

[0024] Figure 2 It is a cross-sectional view of the electrolytic cell cavity structure of the present invention at the electrode plate position.

[0025] Figure 3 It is a schematic diagram of the electrolytic cell provided by the present invention.

[0026] Figure 4 It is an exploded view of the electrolytic cell provided by the present invention.

[0027] Figure 5 It is a simulated velocity contour map of the electrolytic cell cavity structure with double holes for inlet and double holes for outlet of 100*100mm provided by the present invention.

[0028] Figure 6 It is a simulated velocity contour map of a rectangular planar chamber with a single hole for inlet and a single hole for outlet of 100*100mm.

[0029] Figure 7 It is a simulated velocity contour map of a rectangular planar chamber with double holes for inlet and double holes for outlet of 100*100mm.

[0030] Figure 8 It is a simulated velocity contour map of a rectangular planar chamber with triple holes for inlet and triple holes for outlet of 100*100mm.

[0031] In the figures: 1. Electrode plate; 1-1. Cathode electrode plate; 1-2. Anode electrode plate; 2. Boss; 3. Electrode; 3-1. Cathode electrode; 3-2. Anode electrode; 4. Sealing ring; 5. Diaphragm; 6. Screw; 7. Nut; 8. Liquid inlet; 9. Liquid outlet; 10. Electrode hole; 11. Electrode connection cavity; 12. Liquid inlet hole; 13. Liquid inlet groove; 14. Liquid outlet groove; 15. Liquid outlet hole. Detailed Embodiments

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention, and directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0033] As Figure 1 and Figure 2 shown, an electrolytic cell cavity structure is Embodiment 1 of the electrolytic cell cavity structure of the present invention.

[0034] This electrolytic cell cavity structure is the reaction chamber of the electrolytic cell. The inner wall of the electrode plate 1 is recessed to form a concave cavity for the electrolyte to flow through. The side of the electrode plate 1 with the concave cavity is closed and sealed with the diaphragm 5 to form a reaction chamber. Usually, the reaction chamber is vertically arranged, with the lower end face as the liquid inlet end face and the upper end face as the liquid outlet end face. A liquid inlet 8 and a liquid outlet 9 are opened on the outer wall of the reaction chamber. The liquid inlet 8 is communicated with the liquid inlet end face, and the liquid outlet 9 is communicated with the liquid outlet end face.

[0035] In the design of this embodiment, the vertical inner wall of the reaction chamber is recessed with a liquid inlet groove 13 corresponding to the upper edge of the liquid inlet end face, and the vertical inner wall of the reaction chamber is recessed with a liquid outlet groove 14 corresponding to the lower edge of the liquid outlet end face. The space between the liquid inlet groove 13 and the liquid outlet groove 14 in the reaction chamber is the electrolyte flow channel. The width of the reaction chamber perpendicular to the overall flow direction of the electrolyte is the flow channel width. The liquid outlet groove 14 is a straight groove, and the axial width of the straight groove is the same as the flow channel width and is arranged parallel to the flow channel width direction.

[0036] The liquid inlet groove 13 is a symmetrically designed groove structure, and the center of symmetry of this groove structure is the center of the lower end face of the reaction chamber. Preferably, in this embodiment, the bottom shape of the liquid inlet groove 13 of the liquid inlet groove 13 is a V-shaped structure with an upward opening, and the tip of the V-shaped structure is the center position of the bottom of the liquid inlet groove 13. The axial length of the liquid inlet groove 13 is greater than the flow channel width, that is, the groove length of the liquid inlet groove 13 is greater than the groove length of the liquid outlet groove 14.

[0037] There are two symmetrically arranged liquid inlet holes 12 on the lower tank surface of the liquid inlet tank 13. The two liquid inlet holes 12 are respectively communicated with the liquid inlet 8. The electrolyte enters the liquid inlet tank 13 through the liquid inlet holes 12 from the liquid inlet 8, and after being stored in the liquid inlet tank 13, continues to supply liquid upward to the reaction chamber. On the upper tank surface of the liquid outlet tank 14, corresponding to the positions of the liquid inlet holes 12, there are liquid outlet holes 15 arranged in one-to-one correspondence with the liquid inlet holes 12 in the vertical direction. The liquid outlet holes 15 are communicated with the liquid outlet 9. Through the correspondingly arranged liquid inlet holes 12 and liquid outlet holes 15, a more stable flow path is provided for the medium entering the liquid inlet tank 13 and flowing out of the liquid outlet tank 14, thereby further improving the flow field uniformity in the reaction chamber. Compared with the liquid outlet of the liquid outlet tank 14, the liquid inlet of the liquid inlet tank 13 has more liquid inlet positions, can provide effective liquid inlet pressure, and maintains a stable upward flow rate. At the same time, the V-shaped design also makes the fluid at the outer sides of the two liquid inlet holes 12, that is, the positions on both sides of the outer end of the V-shaped opening, converge towards the central part under the action of gravity, thus avoiding the stagnation of the fluid at the positions of the two side walls of the lower bottom surface of the reaction chamber.

[0038] Thus, for the reaction chamber provided in this embodiment, the liquid inlet is supplied by the liquid inlet tank 13. The liquid inlet tank 13 is temporarily filled with the electrolyte, and then the liquid inlet tank 13 is used to provide overall liquid supply for the reaction chamber. At the liquid outlet position, overall liquid outlet is provided through the design from the liquid outlet tank 14 to the liquid outlet 9. By using the tank type for liquid inlet and outlet, the fluid can be effectively guided when flowing through the reaction chamber, and the flow velocity distribution is more uniform. Compared with the reaction chamber with a traditional planar structure, the electrolytic cell cavity structure can greatly reduce the non-uniformity in fluid flow, avoid the phenomenon of too fast or too slow local flow velocity, thereby improving the uniformity and stability of the electrolytic reaction and enhancing the electrolysis efficiency.

[0039] At the same time, during fluid flow, compared with the stagnant flow areas and dead corner problems that are likely to occur in the traditional planar cavity, the tank type is used for liquid supply. Different from the ordinary liquid inlet using hole type, the tank type liquid supply is more stable, and the V-shaped design is used, so that when the liquid inlet tank 13 supplies liquid, it can provide stable and certain flow rate supplement for the fluid upward, effectively make up for the flow rate loss caused by upward flow and reaction, enable the fluid to flow smoothly, reduce the adverse impact of the stagnant area on the reaction efficiency, and at the same time reduce the deposition risk of impurities inside the cavity.

[0040] Due to the more uniform flow field, the current density distribution in the electrolytic cell is effectively optimized, thereby enhancing the efficiency of the electrolytic reaction. Effective gas-liquid separation also reduces unnecessary energy loss, makes the electrolysis process more energy-saving and environmentally friendly, and improves the overall energy utilization rate.

[0041] Specifically, simulation and emulation were respectively carried out on the electrolytic cell cavity structure provided in this embodiment and the traditional rectangular planar cavity. In the simulation and emulation, judgment was made according to the color distribution. The color change of the velocity cloud diagram should be smooth, and there should be no obvious mutation or discontinuity in the color distribution, and the flow field was determined to be a uniform flow field. If obvious color faults or local areas with overly bright or overly dark colors appeared in the cloud diagram, it indicated that there were obvious differences in the velocity distribution, and the flow field was determined to be a non-uniform flow field.

[0042] As Figure 5 shown, it is the velocity cloud diagram of a rectangular planar cavity with a size of 100*100mm, single-hole inlet and single-hole outlet. In the single-hole inlet direction, a V-shaped color fault was formed from bottom to top, and there was accumulated stagnant flow below both sides of the V shape, and the flow field was determined to be a non-uniform flow field.

[0043] As Figure 6 shown, it is the velocity cloud diagram of a rectangular planar cavity with a size of 100*100mm, double-hole inlet and double-hole outlet. In the double-hole inlet direction, a V-shaped color fault was formed from bottom to top at each inlet position, and there was accumulated stagnant flow between and on both sides of the inlet holes, and the flow field was determined to be a non-uniform flow field.

[0044] As Figure 7 shown, it is the velocity cloud diagram of a rectangular planar cavity with a size of 100*100mm, triple-hole inlet and triple-hole outlet. In the triple-hole inlet direction, a V-shaped color fault was formed from bottom to top at each inlet position, and there was obvious accumulation outside the triple inlet holes, and the flow field was determined to be a non-uniform flow field.

[0045] As Figure 4 shown, it is the velocity cloud diagram of the diversion channel of the electrolytic cell cavity structure with a size of 100*100mm in the first embodiment. It can be seen from the figure that the color change of the velocity cloud diagram is smooth, and there is no obvious mutation or discontinuity in the color distribution, and the flow field is a uniform flow field.

[0046] Therefore, for the electrolytic cell cavity structure provided in the first embodiment, through the design of the electrolytic cell cavity structure,

[0047] 1. Effectively improve the uniformity of the flow field

[0048] When the fluid flows through, it can be effectively guided, and the velocity distribution is more uniform. Compared with the electrolytic cell of the traditional planar structure, the first embodiment can greatly reduce the non-uniformity in fluid flow, avoid the phenomenon of overly fast or overly slow local flow velocity, thereby improving the uniformity and stability of the electrolytic reaction and enhancing the electrolysis efficiency.

[0049] 2. Optimize the gas-liquid separation effect

[0050] The electrolytic cell cavity structure optimizes the flow paths of gases and liquids. During electrolysis, the gases form an outward centrifugal force due to their different flow rates from the liquids and are quickly discharged, while the liquids flow smoothly to the liquid discharge port, avoiding the situation of bubbles accumulating on the electrode surface. This design significantly improves the gas-liquid separation efficiency, reduces the interference of bubbles on the reaction, and enhances the overall operating efficiency of the electrolytic cell.

[0051] 3. Reduce the problems of stagnant flow and dead corners

[0052] The design of the V-shaped cavity avoids the problems of stagnant flow areas and dead corners that are prone to occur in traditional flat cavities. The fluid can flow smoothly, reducing the adverse effects of the stagnant area on the reaction efficiency and simultaneously reducing the risk of impurities depositing inside the cavity.

[0053] 4. Improve the electrolysis efficiency and energy utilization rate

[0054] Due to the more uniform flow field, the current density distribution in the electrolytic cell is effectively optimized, thereby enhancing the efficiency of the electrolysis reaction. Effective gas-liquid separation also reduces unnecessary energy losses, making the electrolysis process more energy-saving and environmentally friendly and improving the overall energy utilization rate.

[0055] 5. Enhance the equipment stability and service life

[0056] The improved design not only optimizes the working efficiency of the electrolytic cell but also reduces equipment damage caused by bubble accumulation, poor gas-liquid separation, or fluid retention. The design of the V-shaped cavity improves the fluid flow stability, reduces the wear and corrosion of the equipment, and significantly extends the service life of the electrolytic cell.

[0057] Such as Figure 1 and Figure 2 shown, an electrolytic cell cavity structure is Embodiment 2 of the electrolytic cell cavity structure of the present invention.

[0058] Based on Embodiment 1, Embodiment 2 further designs the chamber on how to connect the electrodes to the reaction chamber.

[0059] Specifically, the vertical inner wall of the reaction chamber is concave near the position of the vertical side wall of the reaction chamber to form an electrode connection chamber 11. The electrode connection chamber 11 communicates with the vertical side wall of the reaction chamber. An electrode hole 10 communicating with the outside is opened on the vertical side wall, and an electrode for supplying power to the electrode plate in the reaction chamber is provided in the electrode connection chamber 11.

[0060] In the second embodiment, the electrode tab is arranged in the electrode connection cavity 11, rather than being arranged directly in the reaction chamber, that is, it will not protrude from the flow range of the fluid, thereby causing excessive obstruction to the flow of the fluid. The electrode connection cavity 11 is only a small-sized concave cavity on the side relative to the reaction chamber as a whole, and will not cause excessive interference to the fluid flowing therethrough, thereby further stabilizing the stability and uniformity of the flow field.

[0061] like Figure 3 and Figure 4 An electrolysis chamber shown is an embodiment of the electrolysis chamber in the present application.

[0062] The electrolysis chamber includes an anode plate 1-2, a cathode plate 1-1, an anode electrode 3-2, a cathode electrode 3-1 and a diaphragm 5, wherein the diaphragm 5 is arranged between the anode plate 1-2 and the cathode plate 1-1, and is used to separate the anode and cathode chambers to prevent product mixing (such as hydrogen and oxygen), but allows ions to pass through to maintain the normal progress of the electrolysis reaction. The anode plate 1-2, the diaphragm 5, and the cathode plate 1-1 are closed and effectively fastened by a screw 6 and a nut 7, and the three are also sealed by a sealing ring 4 to prevent liquid leakage and ensure the sealing of the cavity.

[0063] An electrolytic cell cavity structure is formed between the inner wall of the anode plate 1-2 and the diaphragm 5, and an electrolytic cell cavity structure is formed between the inner wall of the cathode plate 1-1 and the diaphragm 5. The anode electrode 3-2 is arranged in the electrolytic cell cavity structure on the side of the anode plate 1-2, and the cathode electrode 3-1 is arranged in the electrolytic cell cavity structure on the side of the cathode plate 1-1. The anode electrode 3-2 and the cathode electrode 3-1 are made of highly conductive and corrosion-resistant materials (such as titanium or nickel coating materials).

[0064] In the electrode setting, the structure of the nipple 3 is designed to further optimize the fluid distribution. Specifically, through holes are evenly spaced on the anode electrode 3-2 and the cathode electrode 3-1, and support plates are provided on the sides of the anode electrode 3-2 and the cathode electrode 3-1 corresponding to the direction away from the diaphragm 5. The support plate has a nipple 3 protruding from it and supporting the surface of the electrode and the support plate. The through hole and the nipple 3 are staggered. The design of the nipple 3 is used to increase disturbance and avoid stagnation areas. At the same time, the nipple 3 also plays a role in supporting the diaphragm 5 and the electrode to ensure its stability during operation.

[0065] The inner wall of the anode plate 1-2 and the vertical inner wall of the cathode plate 1-1 are concave with an electrode connection cavity 11 near the vertical side wall. The electrode connection cavity 11 is connected to the vertical side wall of the reaction chamber. The vertical side wall is provided with an electrode hole 10 connected to the outside. A pole ear connected to the corresponding pole plate is provided in the electrode connection cavity 11, and the pole ear is electrically connected to the external circuit through the electrode hole 10 on this side.

[0066] When the electrolysis cell is working, the electrolyte enters the V-shaped cavity through the liquid inlet 8. Under the combined action of the nipple 3 and the electrolytic cell cavity structure, the fluid is evenly guided to the anode and cathode surfaces for reaction. The gases (such as hydrogen and oxygen) generated during the reaction are naturally separated through the flow path and discharged from the liquid outlet 9 respectively. The diaphragm 5 ensures the separation of the anode and cathode products, avoids mixing, and at the same time ensures the normal migration of ions.

[0067] In this process, the electrolysis cell designed in this way can make full use of the excellent performance of the electrolytic cell cavity structure. At the same time, the electrolytic cell cavity structure can be combined with the nipple 3. During the reaction, the speeds of the gas and the liquid are different, so they can be quickly separated. The bubbles will not accumulate on the surface of the electrode nipple 3, significantly improving the reaction efficiency. That is, by utilizing the disturbance effect of the nipple 3, the fluid velocity distribution becomes more uniform. Based on the V-shaped electrolytic cell cavity structure, a better solution is provided here to avoid the stagnant flow area and dead angle problems in the traditional design. The uniform flow field distribution and effective gas-liquid separation formed by the electrolytic cell cavity structure make the electrolysis reaction more efficient and the current density distribution more uniform.

[0068] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electrolytic cell cavity structure, which is a reaction chamber of the electrolytic cell, wherein the reaction chamber is arranged vertically, the lower end face is a liquid inlet end face, the upper end face is a liquid outlet end face, and a liquid inlet and a liquid outlet are opened on the outer wall of the reaction chamber, the liquid inlet is connected to the liquid inlet end face, and the liquid outlet is connected to the liquid outlet end face, characterized in that: The vertical inner wall of the reaction chamber is concave at the upper edge of the liquid inlet end surface corresponding to the liquid inlet end surface to have a liquid inlet groove, the lower groove surface of the liquid inlet groove is connected to the liquid inlet hole, the vertical inner wall of the reaction chamber is concave at the lower edge of the liquid outlet end surface corresponding to the liquid outlet end surface to have a liquid outlet groove, the upper groove surface of the liquid outlet groove is connected to the liquid outlet, the space between the liquid inlet groove and the liquid outlet groove corresponding to the reaction chamber is the electrolyte flow channel, and the width of the reaction chamber perpendicular to the overall flow direction of the electrolyte is the flow channel width; The liquid inlet groove is a symmetrically designed groove structure, the symmetry center of the groove structure is the center of the lower end surface of the reaction chamber, and the axial length of the liquid inlet groove is greater than the width of the flow channel; The liquid outlet groove is a straight groove, and the axial width of the straight groove is the same as the width of the flow channel, and is arranged parallel to the width direction of the flow channel.

2. An electrolytic cell cavity structure according to claim 1, characterized in that: The bottom of the liquid inlet tank is in the shape of a V-shaped structure with an opening facing upward, wherein the tip of the V-shaped structure is the center position of the bottom of the liquid inlet tank.

3. An electrolytic cell cavity structure according to claim 2, characterized in that: The lower groove surface of the liquid inlet groove is symmetrically provided with liquid inlet holes, which are connected with the liquid inlet port. The electrolyte enters the liquid inlet groove from the liquid inlet port through the liquid inlet holes, and continues to supply liquid upward to the reaction chamber after being stored in the liquid inlet groove.

4. An electrolytic cell cavity structure according to claim 3, characterized in that: The upper groove surface of the liquid outlet groove corresponds to the position of the liquid inlet hole, and liquid outlet holes are arranged in a one-to-one correspondence with the liquid inlet holes in the vertical direction, and the liquid outlet holes are connected with the liquid outlet.

5. The electrolytic cell cavity structure according to claim 1, characterized in that: The vertical inner wall of the reaction chamber is concave near the vertical side wall of the reaction chamber and has an electrode connection cavity, which is connected to the vertical side wall of the reaction chamber. The vertical side wall is provided with an electrode hole connected to the outside, and an electrode is provided in the electrode connection cavity to supply power to the electrode plate in the reaction chamber.

6. An electrolysis chamber, characterized in that: It includes an anode plate, a cathode plate and a diaphragm, wherein the diaphragm is arranged between the anode plate and the cathode plate, and the anode plate, the diaphragm and the cathode plate are closed, and an electrolytic cell cavity structure as described in any one of claims 1 to 5 is formed between the inner wall of the anode plate and the diaphragm, and an electrolytic cell cavity structure as described in any one of claims 1 to 5 is formed between the inner wall of the cathode plate and the diaphragm.

7. An electrolysis cell according to claim 6, characterized in that: It comprises an anode electrode and a cathode electrode. The anode electrode is arranged in the electrolytic cell cavity structure on the anode plate side, and the cathode electrode is arranged in the electrolytic cell cavity structure on the cathode plate side.

8. An electrolysis cell according to claim 7, characterized in that: The anode electrode and the cathode electrode are respectively provided with through holes evenly spaced apart, and the sides of the anode electrode and the cathode electrode corresponding to the direction away from the diaphragm are respectively provided with support plates, and the support plates are protruded with nipples supported on the surfaces of the electrodes and the support plates, and the through holes and the nipples are staggered.

9. An electrolysis cell according to claim 8, characterized in that: The inner wall of the anode plate and the vertical inner wall of the cathode plate are concavely provided with an electrode connection cavity near the vertical side wall. The electrode connection cavity is connected to the vertical side wall of the reaction chamber. The vertical side wall is provided with an electrode hole connected to the outside. A pole ear connected to the corresponding pole plate is provided in the electrode connection cavity, and the pole ear is electrically connected to the external circuit through the electrode hole on this side.

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