Electrolytic cell polar plate with rainbow-shaped flow channel and hydrogen generator

Abstract

The utility model discloses an electrolytic cell polar plate of rainbow shape runner and hydrogen generator, electrolytic cell polar plate of rainbow shape runner includes electrolytic polar piece body, and the opposite two sides of electrolytic polar piece body are provided with first recess and second recess respectively, the second recess is connected with hydrogen output channel, the first recess is connected with electrolyte input channel and electrolyte output channel, and is provided with first main stream groove, second main stream groove and a plurality of first branch stream groove in the first recess, and the first main stream groove is surrounded in the periphery of a plurality of first branch stream groove, and the second main stream groove penetrates first branch stream groove, and both ends are communicated with first main stream groove, be provided with fourth main stream groove, fifth main stream groove and a plurality of second branch stream groove in the second recess, and the fourth main stream groove is surrounded in the periphery of a plurality of second branch stream groove, and the fifth main stream groove penetrates second branch stream groove, and both ends are communicated with fourth main stream groove. The utility model can reduce the flow resistance of electrolyte, and make hydrogen gas bubble in branch runner fast discharge, reduce bubble stagnation risk.

Description

Technical Field

[0001] This utility model relates to the field of electrolysis technology, specifically to an electrolytic cell electrode plate with a rainbow-shaped flow channel and a hydrogen generator. Background Technology

[0002] Currently, hydrogen generators consist of a tank, an anode, and a cathode, with most separating the anode and cathode chambers using a diaphragm. When direct current passes through the hydrogen generator, an oxidation reaction occurs at the anode-solution interface, and a reduction reaction occurs at the cathode-solution interface to produce the desired product. However, in existing hydrogen generators, the flow channels within the tank for electrolyte flow typically employ a main channel surrounding branch channels. This design tends to increase electrolyte flow resistance and cause gas stagnation in the branch channels. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide an electrolytic cell electrode plate with a rainbow-shaped flow channel and a hydrogen generator, which can reduce the flow resistance of the electrolyte and enable hydrogen bubbles to be discharged quickly in the branch flow channel, thereby reducing the risk of bubble retention.

[0004] One of the objectives of this utility model is to provide an electrolytic cell electrode plate with a rainbow-shaped flow channel, which is achieved by the following technical solution:

[0005] An electrolytic cell electrode plate with a rainbow-shaped flow channel includes an electrolytic electrode body. A first groove is provided on a first side surface of the electrolytic electrode body along its thickness direction, and a second groove matching the first groove is provided on a second side surface of the electrolytic electrode body along its thickness direction. The electrolytic electrode body has a hydrogen output channel communicating with the second groove. The electrolytic electrode body also has an electrolyte input channel and an electrolyte output channel communicating with the first groove. Its distinguishing feature is that…

[0006] The first groove is provided with a first main channel, a second main channel and a plurality of first branch channels. The first main channel is distributed in a ring and surrounds the periphery of the plurality of first branch channels. The second main channel penetrates the first branch channel and the two ends of the second main channel are connected to the first main channel.

[0007] The second groove is provided with a fourth main channel, a fifth main channel, and a plurality of second branch channels. The fourth main channel is distributed in a ring and surrounds the periphery of the plurality of second branch channels. The fifth main channel penetrates the second branch channels and is connected to the fourth main channel at both ends.

[0008] In one of the objectives of this utility model, as an optional embodiment, the number of the second mainstream channels is several, and the several second mainstream channels are linearly arrayed along the direction from the electrolyte input channel to the electrolyte output channel.

[0009] In one of the objectives of this utility model, as an optional embodiment, a third main channel is provided in the first groove, and the two ends of the third main channel are respectively connected to the electrolyte input channel and the electrolyte output channel, and the third main channel is arranged in a straight line.

[0010] In one of the objectives of this utility model, as an optional embodiment, the middle part of the second mainstream channel is connected to the third mainstream channel, and the two sides of the second mainstream channel are inclined towards the direction of the electrolyte output channel.

[0011] In one of the objectives of this utility model, as an optional embodiment, the second mainstream channel is arc-shaped, with the arc-shaped protrusion of the second mainstream channel facing the direction of the electrolyte input channel, and both ends of the second mainstream channel facing the direction of the electrolyte output channel.

[0012] In one of the objectives of this utility model, as an optional embodiment, the width of the third main channel gradually increases from the electrolyte input channel to the electrolyte output channel.

[0013] In one of the objectives of this utility model, as an optional implementation, both the first main channel and the fourth main channel are arranged in a circular shape.

[0014] The first groove is provided with an electrolyte input tank and an electrolyte output tank; one end of the electrolyte input tank is connected to the electrolyte input channel, and the other end is connected to the first main channel, and the electrolyte input tank is arranged along the tangential direction of the first main channel; one end of the electrolyte input tank is connected to the electrolyte output channel, and the other end is connected to the first main channel, and the electrolyte output tank is arranged along the tangential direction of the first main channel;

[0015] The second groove is provided with a hydrogen output groove, one end of which is connected to the hydrogen output channel and the other end is connected to the fourth main channel. The electrolyte input groove is arranged along the tangential direction of the fourth main channel.

[0016] In one of the objectives of this utility model, as an optional implementation, the width of the first main channel is a1 and the depth is b1; the width of the second main channel is a2 and the depth is b2; the width of the first branch channel is a3 and the depth is b3; wherein a1 = a2 > a3, and b1 = b2 > b3.

[0017] The second objective of this utility model is to provide a hydrogen generator, which is achieved by the following technical solution:

[0018] A hydrogen generator includes an upper end plate, a lower end plate, and an electrode assembly disposed between the upper end plate and the lower end plate. The electrode assembly is characterized in that it includes two electrolytic cell electrode plates with rainbow-shaped flow channels as described in any one of the objectives of this utility model. The two electrolytic electrode bodies are fixedly connected in a detachable manner, such that a first groove and a second groove on the two electrolytic electrode bodies are arranged opposite to each other and enclose an electrolytic chamber.

[0019] In one of the second objectives of this utility model, as an optional implementation, the electrode assembly includes at least two; the at least two electrode assemblies are stacked on top of each other; the electrolytic electrode bodies of two adjacent electrode assemblies are fixedly connected in a detachable manner.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The electrolytic cell electrode plate of this invention features a rainbow-shaped flow channel. By arranging the first and fourth main flow channels in a ring shape, the electrolyte, after being introduced into the first main flow channel via the electrolyte input channel, can flow in a ring and be guided into the first groove for electrolysis via the second main flow channel and each of the first branch channels. The second main flow channel penetrates each of the first branch channels, and its two ends are connected to the first main flow channel. By laterally arranging the second main flow channel, each of the first branch channels is divided into multiple segments with shorter and straighter paths, which may reduce flow resistance, reduce pumping energy consumption, improve the distribution of electrolyte in each of the first branch channels, and achieve horizontal diffusion. Air bubbles in the first branch channels can be quickly discharged through the second main flow channel, reducing the risk of air bubble retention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first side of the electrolytic cell electrode plate with a rainbow-shaped flow channel in Example 1;

[0023] Figure 2 This is a schematic diagram of the second side of the electrolytic cell electrode plate with a rainbow-shaped flow channel in Example 1;

[0024] Figure 3 This is a cross-sectional view of the AA section of the electrolytic cell electrode plate of the rainbow-shaped flow channel in Example 1.

[0025] In the diagram: 10, First groove; 11, First main stream groove; 12, Second main stream groove; 13, Third main stream groove; 14, First branch groove; 15, Electrolyte input groove; 16, Electrolyte output groove; 20, Second groove; 21, Fourth main stream groove; 22, Fifth main stream groove; 23, Second branch groove; 24, Hydrogen output groove; 30, Hydrogen output channel; 40, Electrolyte input channel; 50, Electrolyte output channel. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0030] Example 1:

[0031] Please refer to Figure 1-3This embodiment provides an electrolytic cell electrode plate with a rainbow-shaped flow channel, including an electrolytic electrode body. A first groove 10 is provided on a first side of the electrolytic electrode body along its thickness direction, and a second groove 20 matching the first groove 10 is provided on a second side of the electrolytic electrode body along its thickness direction. The electrolytic electrode body has a hydrogen output channel 30 communicating with the second groove 20. The electrolytic electrode body also has an electrolyte input channel 40 and an electrolyte output channel 50 communicating with the first groove 10. Its characteristic is that…

[0032] The first groove 10 is provided with a first main channel 11, a second main channel 12 and a plurality of first branch channels 14. The first main channel 11 is distributed in a ring and surrounds the outer periphery of the plurality of first branch channels 14. The second main channel 12 penetrates the first branch channel 14 and the two ends of the second main channel 12 are connected to the first main channel 11.

[0033] The second groove 20 is provided with a fourth main channel 21, a fifth main channel 22 and a plurality of second branch channels 23. The fourth main channel 21 is distributed in a ring and surrounds the outer periphery of the plurality of second branch channels 23. The fifth main channel 22 penetrates the second branch channels 23 and its two ends are connected to the fourth main channel 21.

[0034] When using the rainbow-shaped flow channel electrolytic cell electrode plate of this embodiment, two electrolytic electrode bodies can be connected by screws or bolts. After the two electrolytic electrode bodies are connected, they can form an electrolytic chamber. In the two electrolytic electrode bodies, the first groove 10 of one electrolytic electrode body and the second groove 20 of the other electrolytic electrode body are arranged opposite to each other. Electrodes (electrodes can be conductive structures such as electrode plates, electrode posts, or membrane electrodes in the prior art) can be set on the first groove 10 and the second groove 20. During the electrolysis operation, electrolyte can be introduced into the electrolytic chamber through the electrolyte input channel 40 on the electrolytic electrode body. Then, by energizing the electrodes, the electrolyte can be electrolyzed to produce the corresponding product hydrogen gas, which is discharged from the hydrogen output channel 30. The remaining electrolyte can be discharged from the electrolyte output channel 50.

[0035] By arranging the first main channel 11 and the fourth main channel 21 in a ring shape, the electrolyte can flow in a ring shape after being introduced into the first main channel 11 through the electrolyte input channel 40, and then be introduced into the first groove 10 for electrolysis via the second main channel 12 and each of the first branch channels 14. The second main channel 12 runs through each of the first branch channels 14 and its two ends are connected to the first main channel 11. By arranging the second main channel 12 laterally, each of the first branch channels 14 is divided into multiple segments with shorter and straighter paths, which may reduce flow resistance, reduce pumping energy consumption, improve the distribution of electrolyte in each of the first branch channels 14, and achieve horizontal diffusion. Bubbles in the first branch channels 14 can be quickly discharged through the second main channel 12, reducing the risk of bubble retention.

[0036] Specifically, there are several second mainstream channels 12, which are arranged in a linear array along the direction from the electrolyte input channel 40 to the electrolyte output channel 50. The multiple second mainstream channels 12 are arranged in parallel, which makes the electrolyte in the channel more uniform and further improves the efficiency of bubble removal.

[0037] A third main channel 13 is provided in the first groove 10. The two ends of the third main channel 13 are connected to the electrolyte input channel 40 and the electrolyte output channel 50, respectively. The third main channel 13 is arranged in a straight line. By setting the third main channel 13 from the inlet to the outlet, a central flow channel is formed. The central flow channel has high throughput and can quickly transport electrolyte to the second main channel 12 and the peripheral first branch channel 14. Furthermore, the width of the third main channel 13 gradually increases from the electrolyte input channel 40 to the electrolyte output channel 50. By gradually widening the third main channel 13, the pressure loss of electrolyte in the central flow channel is compensated, and the flow activity at the edge is improved.

[0038] In this embodiment, the second main channel 12 is connected to the third main channel 13 at its middle section, and both sides of the second main channel 12 are inclined towards the electrolyte output channel 50. Further, the second main channel 12 is arc-shaped, with the apex height being 1 / 4 of its diameter. The arc-shaped protrusion of the second main channel 12 is positioned towards the electrolyte input channel 40, and both ends of the second main channel 12 are positioned towards the electrolyte output channel 50. By inclining both sides of the second main channel 12 towards the electrolyte input channel 40, the bubbles carried out from each of the first branch channels 14 have the kinetic energy to migrate along the inclined directions on both sides towards the annular main channels at both ends under the drive of buoyancy, thus helping the gas to be discharged efficiently. Several arc-shaped second main channel 12 are arranged in parallel, dividing each first branch channel 14 vertically into several arc-shaped areas, making the whole rainbow-shaped. Together with the first main channel 11 and the fourth main channel 21 arranged in a ring, the bubbles and electrolyte flow along the arc-shaped channels in the first main channel 11 and the second main channel 12. Compared with straight channels, the arc-shaped channels can slow down the flow rate, reduce the rapid flow of electrolyte, avoid eddy blockage at sharp turns, and ensure smooth gas-liquid flow.

[0039] In this embodiment, the first groove 10 is provided with an electrolyte input groove 15 and an electrolyte output groove 16. One end of the electrolyte input groove 15 is connected to the electrolyte input channel 40, and the other end is connected to the first main channel 11. The electrolyte input groove 15 is arranged along the tangential direction of the first main channel 11. One end of the electrolyte input groove 15 is connected to the electrolyte output channel 50, and the other end is connected to the first main channel 11. The electrolyte output groove 16 is arranged along the tangential direction of the first main channel 11. The tangentially arranged electrolyte input groove 15 guides the electrolyte to be injected tangentially, and centrifugal force is used to make the electrolyte distribute outward in the first groove 10. At the same time, the tangentially arranged electrolyte output groove 16 makes the electrolyte quickly discharged under the action of centrifugal force.

[0040] On the other hand, a hydrogen output channel 24 is provided in the second groove 20. One end of the hydrogen output channel 24 is connected to the hydrogen output channel 30, and the other end is connected to the fourth main channel 21. The electrolyte input channel 15 is arranged tangentially to the fourth main channel 21. The tangentially arranged hydrogen output channel 24 allows bubbles to be quickly discharged under centrifugal force.

[0041] More specifically, the first main channel 11 has a width of a1 and a depth of b1; the second main channel 12 has a width of a2 and a depth of b2; the first branch channel 14 has a width of a3 and a depth of b3; wherein a1 = a2 > a3, b1 = b2 > b3. Preferably, a1 = a2 = 2a3, b1 = b2 = 2b3. In this embodiment, the first main channel 11 and the second main channel 12 are both 4mm wide and 1mm deep; the first branch channel 14 is 2mm wide and 0.5mm deep. The third main channel 13 has a minimum width of 4mm and a depth of 1mm.

[0042] Example 2:

[0043] This embodiment provides a hydrogen generator based on embodiment 1, including an upper end plate, a lower end plate, and an electrode assembly disposed between the upper end plate and the lower end plate. The electrode assembly is characterized in that it includes two electrolytic cell electrode plates with rainbow-shaped flow channels as described in embodiment 1. The two electrolytic electrode bodies are fixedly connected in a detachable manner, so that the first groove 10 and the second groove 20 on the two electrolytic electrode bodies are arranged opposite to each other and enclose an electrolytic chamber.

[0044] The first groove 10 of the electrolytic electrode body is coated with a membrane electrode coating. The membrane electrode coating forms a conductive electrode structure, which saves more space compared to protruding structures such as electrode sheets, electrode posts, and nickel wire mesh. Moreover, the coating has a larger distribution area, resulting in a higher current density and higher electrolysis efficiency.

[0045] Two electrolytic electrode bodies can be used as anode and cathode plates, respectively. A positive current is connected to the anode plate, and a negative current is connected to the cathode plate. An ion-exchange membrane separates the anode and cathode chambers within the electrolysis chamber, allowing for separate electrolysis to produce the corresponding products. Alternatively, a water-permeable mesh can be installed within the electrolysis chamber. This mesh is permeable to water but not air, allowing the electrolyte to flow between the anode and cathode chambers while isolating the anode chamber from the gas generated during electrolysis. Furthermore, the electrode assembly comprises at least two plates; these at least two electrode assemblies are stacked on top of each other; adjacent electrode bodies are detachably fixed together. This allows at least two electrolysis chambers to be formed within the hydrogen generator, resulting in higher electrolysis efficiency.

[0046] Although certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0047] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An electrolytic cell electrode plate with a rainbow-shaped flow channel, comprising an electrolytic electrode body, wherein a first groove is provided on a first side surface of the electrolytic electrode body along the thickness direction, and a second groove matching the first groove is provided on a second side surface of the electrolytic electrode body along the thickness direction; the electrolytic electrode body is provided with a hydrogen output channel communicating with the second groove; the electrolytic electrode body is further provided with an electrolyte input channel and an electrolyte output channel communicating with the first groove; characterized in that, The first groove is provided with a first main channel, a second main channel and a plurality of first branch channels. The first main channel is distributed in a ring and surrounds the periphery of the plurality of first branch channels. The second main channel penetrates the first branch channel and the two ends of the second main channel are connected to the first main channel. The second groove is provided with a fourth main channel, a fifth main channel, and a plurality of second branch channels. The fourth main channel is distributed in a ring and surrounds the periphery of the plurality of second branch channels. The fifth main channel penetrates the second branch channels and is connected to the fourth main channel at both ends.

2. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 1, characterized in that, The number of the second mainstream channels is several, and the several second mainstream channels are arranged in a linear array along the direction from the electrolyte input channel to the electrolyte output channel.

3. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 2, characterized in that, The first groove is provided with a third main channel, the two ends of which are connected to the electrolyte input channel and the electrolyte output channel, respectively, and the third main channel is arranged in a straight line.

4. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 3, characterized in that, The middle part of the second mainstream channel is connected to the third mainstream channel, and the two sides of the second mainstream channel are inclined towards the electrolyte output channel.

5. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 4, characterized in that, The second main channel is arc-shaped, with the arc-shaped protrusion of the second main channel facing the direction of the electrolyte input channel, and both ends of the second main channel facing the direction of the electrolyte output channel.

6. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 3, characterized in that, The width of the third main channel gradually increases from the electrolyte input channel to the electrolyte output channel.

7. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 1, characterized in that, Both the first and fourth main channels are arranged in a circular shape. The first groove is provided with an electrolyte input tank and an electrolyte output tank; one end of the electrolyte input tank is connected to the electrolyte input channel, and the other end is connected to the first main channel, and the electrolyte input tank is arranged along the tangential direction of the first main channel; one end of the electrolyte input tank is connected to the electrolyte output channel, and the other end is connected to the first main channel, and the electrolyte output tank is arranged along the tangential direction of the first main channel; The second groove is provided with a hydrogen output groove, one end of which is connected to the hydrogen output channel and the other end is connected to the fourth main channel. The electrolyte input groove is arranged along the tangential direction of the fourth main channel.

8. The electrolytic cell electrode plate with a rainbow-shaped flow channel according to claim 7, characterized in that, The width of the first main channel is a1 and the depth is b1; the width of the second main channel is a2 and the depth is b2; the width of the first branch channel is a3 and the depth is b3; where a1 = a2 > a3, and b1 = b2 > b3.

9. A hydrogen generator, comprising an upper end plate, a lower end plate, and an electrode assembly disposed between the upper end plate and the lower end plate, characterized in that, The electrode assembly includes two electrolytic cell electrode plates with rainbow-shaped flow channels as described in any one of claims 1-8. The two electrolytic electrode bodies are fixedly connected in a detachable manner, such that the first groove and the second groove on the two electrolytic electrode bodies are arranged opposite to each other and enclose an electrolytic chamber.

10. A hydrogen generator according to claim 9, characterized in that, The electrode assembly includes at least two; at least two electrode assemblies are stacked on top of each other; the electrolytic electrode bodies of two adjacent electrode assemblies are fixedly connected in a detachable manner.

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