Novel electrolytic cell with diffusion layer structure

Abstract

The utility model relates to the field of electrolytic cells, and discloses a novel diffusion layer structure electrolytic cell which comprises an anode panel, a liquid inlet pipe is fixedly installed on the front side, close to the top face, of the anode panel, an oxygen pipe is fixedly installed on the front side, close to the bottom face, of the anode panel, and a hydrogen pipe is fixedly installed on the front side of the anode panel. When direct current passes through the electrolytic bath, water molecules on the positive electrode are oxidized into oxygen and hydrogen ions, water molecules on the negative electrode are reduced into hydrogen and are discharged through an oxygen pipe and a hydrogen pipe to be collected, when gas enters the gas flow guide assembly, the gas firstly makes contact with a first multilayer net, and the aperture of the first multilayer net is the largest and then is sequentially reduced; when gas passes through the first multilayer net, the gas is in contact with the second multilayer net, and due to the fact that meshes of the second multilayer net are smaller than those of the first multilayer net, part of the gas can be blocked, so that the gas flows more evenly after passing through the gas flow guide assembly, the gas transmission effect is improved, the overall structure is simple, and maintenance is convenient.

Description

Technical Field

[0001] This application belongs to the technical field of electrolytic cells, and specifically relates to a novel electrolytic cell with a diffusion layer structure. Background Art

[0002] A diffusion layer electrolytic cell is a type of electrolytic cell. During the electrolysis process, through the transport action of the diffusion layer, the electrolyte solution transports the reactants to the electrode surface and simultaneously takes away the reaction products from the electrode surface. The structure of a diffusion layer electrolytic cell usually consists of a cathode, an anode, and a diaphragm. The diaphragm divides the electrolytic cell into a cathode chamber and an anode chamber to prevent the cathode and anode from coming into direct contact. The electrolyte solution diffuses from the cathode chamber to the anode chamber through the diffusion layer, and at the same time, the reaction products diffuse from the anode chamber to the cathode chamber. The advantages of a diffusion layer electrolytic cell are high electrolysis efficiency and high purity of reaction products.

[0003] For example, a diffusion layer, an electrolytic cell, and a processing method are disclosed in the invention patent with the publication number CN116397249A. The diffusion layer includes a metal particle layer and a metal felt layer, and the metal particle layer is connected to the side of the metal felt layer facing the membrane electrode; among them, the metal particle layer includes a plurality of metal particles. Along the direction of electrolyte transmission, the metal particle layer has a first region and a second region arranged oppositely. The metal particles in the first region are first metal particles, and the metal particles in the second region are second metal particles. There is a first gap between adjacent first metal particles, and a second gap between adjacent second metal particles, and the second gap is larger than the first gap. By setting the second gap of the metal particle layer to be larger than the first gap, the flow velocity of the gas at the junction of the first region and the second region is relatively fast, so as to improve the gas transmission ability of the diffusion layer, thereby improving the use efficiency of the electrolytic cell and better meeting the use requirements of the electrolytic cell.

[0004] The mixture formed by mixing the metal particles and glue of this device adheres to one side of the metal felt layer in the thickness direction to enable the gas to flow through different gap mixtures to improve the gas transmission effect of the diffusion layer. However, the stainless steel metal particles of this device are mixed with glue to form a mixture. When the mixture is damaged during long-term use or the structure of the glue changes so that the metal particles and the glue are no longer connected, it will not only affect the gas transmission ability of the diffusion layer, but also the overall replacement and maintenance cost of the mixture is relatively high. Therefore, a novel electrolytic cell with a diffusion layer structure is provided. Summary of the Utility Model

[0005] The purpose of this application is to provide a novel electrolytic cell with a diffusion layer structure in order to solve the problems raised above.

[0006] The technical solution adopted in this application is as follows: A new type of diffusion layer structure electrolytic cell includes an anode panel. A liquid inlet pipe is fixedly installed near the top surface on the front side of the anode panel. An oxygen pipe is fixedly installed near the bottom surface on the front side of the anode panel. A hydrogen pipe is fixedly installed on the front side of the anode panel. A cathode panel is arranged on the rear side of the anode panel. Connecting round holes are respectively opened on one side of the anode panel and the cathode panel. A fixing component is arranged inside the connecting round holes. A membrane electrode is arranged between the anode panel and the cathode panel. Titanium felts are respectively fixedly installed on the left and right sides of the membrane electrode. An installation frame body is arranged on the side of the titanium felt away from the membrane electrode. A gas diversion component is fixedly installed inside the installation frame body.

[0007] In a preferred embodiment, the fixing component includes a fixing stud and a locking nut. The fixing stud penetrates through the inside of the connecting round hole, and one end of the fixing stud is threadedly connected with the locking nut.

[0008] In a preferred embodiment, the gas diversion component includes a multi-layer mesh one, a multi-layer mesh two, and a multi-layer mesh three. The multi-layer mesh one is fixedly installed near the front side inside the installation frame body. The multi-layer mesh two is fixedly installed near the middle inside the installation frame body. The multi-layer mesh three is fixedly installed near the rear side inside the installation frame body. The aperture sizes of the multi-layer mesh one, the multi-layer mesh two, and the multi-layer mesh three are different.

[0009] In a preferred embodiment, a battery panel is arranged on the side of the installation frame body away from the titanium felt.

[0010] In a preferred embodiment, a sealing partition is arranged on one side of the battery panel.

[0011] In a preferred embodiment, electrode plates are respectively arranged on the mutually close sides of the anode panel and the cathode panel in a fitting manner.

[0012] In a preferred embodiment, a gasket is arranged at one end of the locking nut, and the gasket is sleeved on the outer surface of the fixing stud.

[0013] In a preferred embodiment, connectors are respectively fixedly installed at the ends of the liquid inlet pipe, the oxygen pipe, and the hydrogen pipe away from the anode panel.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0015] 1. In this application, due to the adoption of the above-mentioned solution, when direct current passes through the electrolytic cell, water molecules on the positive electrode are oxidized into oxygen and hydrogen ions, while water molecules on the negative electrode are reduced into hydrogen and hydroxide ions. Oxygen and hydrogen are precipitated on the electrode surface and discharged through the oxygen pipe and the hydrogen pipe for collection. When the gas enters the gas diversion assembly, it will first come into contact with the first multi-layer mesh. The first multi-layer mesh, the second multi-layer mesh, and the third multi-layer mesh are formed by vacuum sintering. The main purpose of vacuum sintering is to remove oxides and impurities on the surface of metal powder particles and improve the bonding strength between metal powder particles. The pore size of the first multi-layer mesh is the largest and then decreases in sequence. When the gas passes through the first multi-layer mesh, it will come into contact with the second multi-layer mesh. Since the mesh holes of the second multi-layer mesh are smaller than those of the first multi-layer mesh, part of the gas will be blocked. In this way, the gas flow becomes more uniform after passing through the gas diversion assembly, improving the gas transmission effect. The overall structure is simple and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of this application;

[0017] Figure 2 is an exploded schematic diagram of this application;

[0018] Figure 3 is a schematic diagram of the side sectional structure of the installation frame of this application.

[0019] Reference numerals in the figures: 1, anode panel; 2, liquid inlet pipe; 3, oxygen pipe; 4, hydrogen pipe; 5, cathode panel; 6, connecting round hole; 7, fixing component; 8, membrane electrode; 9, titanium felt; 10, installation frame; 11, gas diversion assembly; 12, fixing stud; 13, locking nut; 14, first multi-layer mesh; 15, second multi-layer mesh; 16, third multi-layer mesh; 17, battery panel; 18, sealing partition; 19, electrode plate; 20, gasket; 21, connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application.

[0021] Reference Figure 1 、 Figure 2 and Figure 3, a new type of diffusion layer structure electrolytic cell, including an anode panel 1. A liquid inlet pipe 2 is fixedly installed near the top surface on the front side of the anode panel 1. An oxygen pipe 3 is fixedly installed near the bottom surface on the front side of the anode panel 1. A hydrogen pipe 4 is fixedly installed on the front side of the anode panel 1. One ends of the liquid inlet pipe 2, the oxygen pipe 3, and the hydrogen pipe 4 away from the anode panel 1 are respectively fixedly installed with connectors 21. By providing the liquid inlet pipe 2, it is convenient to introduce external water into the interior of the electrolytic cell. By providing the oxygen pipe 3 and the hydrogen pipe 4, it is convenient to export the hydrogen and oxygen obtained by decomposing water molecules through electrolysis. By providing the connectors 21, it is convenient for the liquid inlet pipe 2, the oxygen pipe 3, and the hydrogen pipe 4 to be better connected to external pipes.

[0022] Reference Figure 1 、 Figure 2 , a cathode panel 5 is arranged on the rear side of the anode panel 1. Connecting round holes 6 are respectively opened on one side of the anode panel 1 and the cathode panel 5. A fixing component 7 is arranged inside the connecting round holes 6. By providing the connecting round holes 6, it is convenient for the fixing component 7 to fix the anode panel 1 and the cathode panel 5 together, improving stability.

[0023] Reference Figure 1 、 Figure 2 And Figure 3 , a membrane electrode 8 is arranged between the anode panel 1 and the cathode panel 5. Titanium felts 9 are respectively fixedly installed on the left and right sides of the membrane electrode 8. An installation frame body 10 is arranged on the side of the titanium felt 9 away from the membrane electrode 8. A battery panel 17 is arranged on the side of the installation frame body 10 away from the titanium felt 9. A sealing partition 18 is arranged on one side of the battery panel 17. Electrode plates 19 are respectively and fittingly arranged on the sides of the anode panel 1 and the cathode panel 5 close to each other. A gas diversion component 11 is fixedly installed inside the installation frame body 10. By providing the anode panel 1 and the cathode panel 5, it is convenient to install the membrane electrode 8, the titanium felts 9, the installation frame body 10, the battery panel 17, the sealing partition 18, and the electrode plates 19 between the anode panel 1 and the cathode panel 5 to form an electrolytic cell. One of the two electrode plates 19 is the anode and the other is the cathode. The anode electrode plate is in contact with the anode panel 1, and the cathode electrode plate is in contact with the cathode panel 5. The anode and cathode electrodes are separated by an electrolyte solution. When direct current passes through the electrolytic cell, water molecules on the positive electrode are oxidized into oxygen and hydrogen ions, while water molecules on the negative electrode are reduced into hydrogen and hydroxide ions. Oxygen and hydrogen are precipitated on the electrode surface and discharged through the oxygen pipe 3 and the hydrogen pipe 4 for collection.

[0024] Reference Figure 1 、 Figure 2, the fixing component 7 includes a fixing stud 12 and a locking nut 13. The fixing stud 12 passes through the inside of the connecting round hole 6, and one end of the fixing stud 12 is threadedly connected with the locking nut 13. A gasket 20 is provided at one end of the locking nut 13, and the gasket 20 is sleeved on the outer surface of the fixing stud 12; through the cooperation of the provided fixing stud 12 and the locking nut 13, it is convenient to fix the anode panel 1 and the cathode panel 5. Through the provided gasket 20, the locking nut 13 will not easily become loose.

[0025] Reference Figure 2 , Figure 3 , the gas flow guiding component 11 includes a multi-layer mesh one 14, a multi-layer mesh two 15 and a multi-layer mesh three 16. The multi-layer mesh one 14 is fixedly installed near the front side inside the installation frame body 10, the multi-layer mesh two 15 is fixedly installed near the middle inside the installation frame body 10, and the multi-layer mesh three 16 is fixedly installed near the rear side inside the installation frame body 10. The aperture sizes of the multi-layer mesh one 14, the multi-layer mesh two 15 and the multi-layer mesh three 16 are different; the titanium felt 9 is a gas diffusion layer, which is used to distribute fuel and oxygen and create a gas flow field between the anode electrode plate and the cathode electrode plate. Through the provided gas flow guiding component 11, it is convenient for the gas to flow more evenly between the anode electrode plate and the cathode electrode plate. The multi-layer mesh one 14, the multi-layer mesh two 15 and the multi-layer mesh three 16 are formed by multi-layer vacuum sintering. The main purpose of vacuum sintering is to remove oxides and impurities on the surface of metal powder particles and improve the bonding strength between metal powder particles.

[0026] The implementation principle of the embodiment of the new diffusion layer structure electrolytic cell of this application is as follows: The user first assembles the components of the device together to form a complete electrolytic cell. There are two electrode plates 19 in total, one is an anode and the other is a cathode. The anode electrode plate is attached to the anode panel 1, and the cathode electrode plate is attached to the cathode panel 5. The anode and cathode electrodes are separated by an electrolyte solution. When direct current passes through the electrolytic cell, water molecules on the positive electrode are oxidized into oxygen and hydrogen ions, while water molecules on the negative electrode are reduced into hydrogen and hydroxide ions. Oxygen and hydrogen are precipitated on the electrode surface and are discharged through the oxygen pipe 3 and the hydrogen pipe 4 for collection. When the gas enters the inside of the gas flow guiding component 11, it will first contact the multi-layer mesh one 14. The multi-layer mesh one 14, the multi-layer mesh two 15 and the multi-layer mesh three 16 are formed by vacuum sintering. The main purpose of vacuum sintering is to remove oxides and impurities on the surface of metal powder particles and improve the bonding strength between metal powder particles. The aperture opened on the multi-layer mesh one 14 is the largest and then decreases in turn. When the gas passes through the multi-layer mesh one 14, it will contact the multi-layer mesh two 15. Since the mesh holes of the multi-layer mesh two 15 are smaller than those of the multi-layer mesh one 14, part of the gas will be blocked. In this way, the gas flow becomes more uniform after passing through the gas flow guiding component 11, improving the gas transmission effect. The overall structure is simple, easy to maintain, and has good practicability.

[0027] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A novel diffusion layer structure electrolytic cell, comprising an anode panel (1), characterized in that: A liquid inlet pipe (2) is fixedly installed on the front side of the anode panel (1) near the top surface, an oxygen pipe (3) is fixedly installed on the front side of the anode panel (1) near the bottom surface, a hydrogen pipe (4) is fixedly installed on the front side of the anode panel (1), a cathode panel (5) is arranged on the rear side of the anode panel (1), a connecting circular hole (6) is respectively opened on one side of the anode panel (1) and the cathode panel (5), a fixing component (7) is arranged inside the connecting circular hole (6), a membrane electrode (8) is arranged between the anode panel (1) and the cathode panel (5), titanium felt (9) is fixedly installed on the left and right sides of the membrane electrode (8), a mounting frame (10) is arranged on the side of the titanium felt (9) away from the membrane electrode (8), and a gas guide component (11) is fixedly installed inside the mounting frame (10).

2. A novel diffusion layer structure electrolytic cell as claimed in claim 1, characterized in that: The fixing assembly (7) comprises a fixing stud (12) and a locking nut (13); the fixing stud (12) is passed through the interior of the connecting circular hole (6); one end of the fixing stud (12) is threadedly connected to the locking nut (13).

3. A novel diffusion layer structure electrolytic cell as claimed in claim 1, characterized in that: The gas guide component (11) comprises a multilayer net one (14), a multilayer net two (15) and a multilayer net three (16); the multilayer net one (14) is fixedly installed near the front side inside the installation frame (10), the multilayer net two (15) is fixedly installed near the middle part inside the installation frame (10), and the multilayer net three (16) is fixedly installed near the rear side inside the installation frame (10); the multilayer net one (14), the multilayer net two (15) and the multilayer net three (16) have different aperture sizes.

4. A novel diffusion layer structure electrolytic cell as claimed in claim 1, characterized in that: A battery panel (17) is provided on a side of the installation frame (10) away from the titanium felt (9).

5. A novel diffusion layer structure electrolytic cell as claimed in claim 4, characterized in that: A sealing partition (18) is provided on one side of the battery plate (17).

6. A novel diffusion layer structure electrolytic cell as claimed in claim 1, characterized in that: The anode panel (1) and the cathode panel (5) are both provided with an electrode plate (19) on the sides close to each other.

7. A novel diffusion layer structure electrolytic cell as claimed in claim 2, characterized in that: A gasket (20) is provided at one end of the locking nut (13), and the gasket (20) is sleeved on the outer surface of the fixing stud (12).

8. A novel diffusion layer structure electrolytic cell as claimed in claim 1, characterized in that: Connectors (21) are fixedly mounted on the ends of the liquid inlet pipe (2), the oxygen pipe (3) and the hydrogen pipe (4) away from the anode panel (1).

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