CN217052433U - Electrode plate with labyrinth structure and electrolytic cell - Google Patents
Electrode plate with labyrinth structure and electrolytic cell Download PDFInfo
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- CN217052433U CN217052433U CN202123196810.3U CN202123196810U CN217052433U CN 217052433 U CN217052433 U CN 217052433U CN 202123196810 U CN202123196810 U CN 202123196810U CN 217052433 U CN217052433 U CN 217052433U
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Abstract
The application provides an electrode plate with a labyrinth structure and an electrolytic cell, which comprises a plate body and a flow guide structure arranged on the plate body, the flow guide structure comprises a plurality of flow guide layers which are arranged on the plate body in a radial direction at intervals layer by layer so as to guide the electrolyte layer by layer, the plurality of flow guide layers are concentrically arranged on the plate body and are mutually sleeved, each flow guide layer comprises a plurality of flow guide plates which are arranged in a circumferential direction at intervals, the electrolyte is guided layer by layer through a plurality of flow guide layers which are arranged on the plate body in a radial direction layer by layer at intervals, the electrolyte flowing through the reactor is uniformly distributed, the labyrinth arrangement can effectively avoid the situation that the catalyst at the edge of the electrode plate can not be effectively utilized, the turbulence degree of the flow is greatly increased, the gas bubble transportation can be accelerated, the retention time of the gas bubbles in the chamber is reduced, the mass transfer process of the hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.
Description
Technical Field
The application relates to the technical field of electrolytic cells, in particular to a plate electrode with a labyrinth structure and an electrolytic cell.
Background
The surface of a main polar plate in an electrolysis unit of the prior filter-press type electrolytic cell adopts a convex-concave structure at intervals, the convex-concave structure on the surface of the polar plate leads the polar plates at two sides to be in top-to-top contact, that is, the cell is not completely contacted, and along with the progress of electrolysis, a large amount of bubbles generated in the cell move to the position near the concave-convex vertex, which will increase the contact resistance of the electrode plate and increase the electrolysis energy consumption, when the alkali liquor flows in the small chamber, the concave-convex structure can generate the flow vertical to the electrode plate, but the transverse flow is lacked, so that the alkali liquor is unevenly distributed in the radial direction of the electrode plate, and along with the increase of the size of the electrolytic bath, the more serious the non-uniform distribution of the alkali liquor is, the development of large-scale electrolytic bath equipment is greatly hindered, secondly, when bubbles in the electrolysis unit pass through the concave-convex structure, the bubbles are possibly clamped at the concave part, so that the retention time of the bubbles is increased, and the electrolysis energy consumption is increased.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of the application is to provide a plate electrode with a labyrinth structure, wherein the plate body is radially provided with a plurality of flow guide layers at intervals layer by layer to guide the electrolyte layer by layer, the flowing electrolyte is uniformly distributed, each flow guide layer comprises a plurality of flow guide plates at intervals in the circumferential direction, each flow guide plate on each flow guide layer is arranged at intervals in the circumferential direction in a staggered manner to guide and disperse the electrolyte layer by layer, the labyrinth arrangement can effectively avoid the condition that a catalyst at the edge of the plate electrode cannot be effectively utilized, the flowing turbulence degree is greatly increased, the bubble transportation can be accelerated, the retention time of bubbles in a cavity is shortened, the mass transfer process of hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.
In order to reach above-mentioned purpose, the application provides a plate electrode of labyrinth type structure, the package rubbing board body with set up in water conservancy diversion structure on the plate body, the water conservancy diversion structure includes a plurality of water conservancy diversion layers that the plate body footpath upwards set up layer upon layer at an interval are in order to overlap the water conservancy diversion to electrolyte layer upon layer, and is a plurality of the water conservancy diversion layer is in concentric setting and mutual registrate on the plate body, each the water conservancy diversion layer includes a plurality of guide plates that the interval set up on the circumferencial direction, and is adjacent two-layer the each on water conservancy diversion layer the guide plate sets up with the successive layer to electrolyte water conservancy diversion dispersion in the circumferencial direction is crisscross.
Furthermore, the guide plate is of an arc-shaped structure, and the concave portion of the guide plate faces the circle center of the plate body. Furthermore, the upper top surface of the guide plate is of a plane structure.
Further, in the radial direction of the plate body, the arc length of the guide plate close to the circle center of the plate body is equal to the gap distance between the adjacent guide plates far away from the circle center of the plate body.
Furthermore, the plate body further comprises an inlet flow channel and an outlet flow channel which are arranged on the edge of the plate body, and the inlet flow channel and the outlet flow channel are oppositely arranged in the radial direction of the plate body.
Further, still include the vortex structure, the vortex structure set up in entry runner department with exit runner department, the vortex structure is used for carrying out the vortex dispersion to the electrolyte that passes through.
Furthermore, the spoiler structure includes left spoiler and right spoiler, left side spoiler with the right spoiler sets up at the circumferencial direction interval.
Further, the inlet flow channel and the outlet flow channel face a gap between the left spoiler and the right spoiler, respectively.
Further, the gap between the left spoiler and the right spoiler is tapered in the radial direction.
Further, the number of the deflectors of each flow guide layer is the same.
An electrolytic cell comprises the electrode plate with the labyrinth structure.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an electrode plate with a labyrinth structure according to an embodiment of the present application;
fig. 2 is a velocity field distribution diagram of an electrode plate of a labyrinth structure according to an embodiment of the present application;
fig. 3(a) to 3(c) are particle distribution diagrams of an electrode plate of a labyrinth structure in a steady-state flow field for 0-2s according to an embodiment of the present application;
fig. 4(a) to 4(c) are particle distribution diagrams of an electrode plate with a labyrinth structure in a steady-state flow field for 3-5s according to an embodiment of the present application;
fig. 5(a) to 5(c) are particle distribution diagrams of an electrode plate with a labyrinth structure under a steady-state flow field for 10-20s according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout
Like reference numerals refer to the same or similar elements or elements having the same or similar function. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the application include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of an electrode plate with a labyrinth structure according to an embodiment of the present application.
Referring to fig. 1 to 5, which include all the drawings of fig. 3(a) -3 (c), fig. 4(a) -4 (c), and fig. 5(a) -5 (c), an electrode plate of a labyrinth structure includes a plate body 1 and a flow guide structure disposed on the plate body 1, where the flow guide structure includes a plurality of flow guide layers 2 disposed at intervals in a radial direction of the plate body 1 to guide an electrolyte layer by layer, the plurality of flow guide layers 2 are concentrically disposed on the plate body 1 and are nested with each other, each flow guide layer 2 includes a plurality of flow guide plates 3 disposed at intervals in a circumferential direction, and each flow guide plate 3 of the flow guide layers 2 of two adjacent layers is disposed at an interval in the circumferential direction to guide and disperse the electrolyte layer by layer. In the electrolytic cell structure, the electrode plates on two sides can form multi-point contact in a top-to-top mode, on the other hand, the disturbance degree of flow is increased, the concentration difference of electrolyte at each position in a flow channel is reduced, and the electrolyte is distributed more uniformly.
In this embodiment, specifically, the plate body 1 may be made of a steel plate, and a labyrinth-type diversion plate structure is processed on the steel plate by a cold-rolling deep-drawing method and is welded with the steel electrode frame into a whole. Or in other embodiments, the labyrinth-type deflector structure can also be processed by adopting a mould casting mode. This is not limited by the present application. The electrode plate can play a role in supporting the catalytic electrode and uniformly distributing electrolyte.
The plate body 1 can be a circular plate, a plurality of flow guide layers 2 are concentrically arranged on the plate body in an annular shape, and the flow guide layers 2 are arranged at intervals so that electrolyte can be guided and diffused through the flow guide layers 2, each flow guide layer 2 comprises a plurality of flow guide plates 3 arranged on a circular track where the electrolyte is located in an annular shape at intervals, the flow guide plates 3 of two adjacent flow guide layers 2 are arranged in a staggered mode, the integral combination structure is a labyrinth structure, the electrolyte is guided and diffused layer by layer through the flow guide plates and fully diffused to the edge of the plate body, the flow guide plates are arranged on the plate body in a protruding mode, the surface of the plate body is in a plane structure, the flow guide plates are vertically arranged on the plate body, the electrolyte is divided layer by layer through the flow guide plates, the vertical flow of the electrolyte when the electrolyte passes through the electrode plates is avoided, the uniform distribution of the electrolyte on the electrode plates can be promoted, and the retention time of contact resistance and bubbles in a small chamber is reduced, improve the electrolysis efficiency and reduce the energy consumption.
The guide plate 3 is of an arc-shaped structure, and the concave part of the guide plate 3 faces the circle center of the plate body. In the flow direction of the electrolyte, the guide plate 3 is arranged back to back, and the guide plate 3 guides the flow of the electrolyte to two sides by virtue of the radian of the outer side of the guide plate and diffuses to the whole electrode plate layer by layer through the guide plate on the adjacent side. The turbulent motion degree of the flow is increased, the bubble transportation can be accelerated, the retention time of the bubbles in the cavity is reduced, the mass transfer process of the hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.
The upper top surface of the guide plate 3 is of a plane structure. The top of the small unit structure guide plate with the labyrinth structure is of a horizontal structure, so that the electrode plates on two sides can realize the close contact of 'surface and surface', the contact surfaces are flush, the increase of contact resistance caused by the accumulation of bubbles during passing is avoided, and the electrolysis energy consumption is reduced.
In the radial direction of the plate body 1, the arc length of the guide plate 3 of the guide flow layer 2 close to the circle center position of the plate body 1 is equal to the gap distance between the adjacent guide plates 3 of the guide flow layer 2 far away from the circle center position of the plate body 1. Through the structural design, the phenomenon that a small amount of electrolyte permeates into gaps of guide plates of adjacent layers is avoided, the electrolyte is further ensured to be fully diffused layer by layer, and the flow guide diffusion effect of the electrode plate is ensured.
The electrode plate with the labyrinth structure further comprises an inlet flow passage 4 and an outlet flow passage 5 which are arranged on the edge of the plate body, wherein the inlet flow passage 4 and the outlet flow passage 5 are oppositely arranged in the radial direction of the plate body 1. Electrolyte flows in through the alkali liquor inlet flow passage 4, electrolytic reaction is carried out on the electrode to generate hydrogen or oxygen, and then the mixture of alkali liquor and gas flows out from the gas-liquid outlet flow passage 5 and enters the next working section. The inlet flow channel 4 and the outlet flow channel 5 are oppositely arranged, so that under the condition that the flow direction consistency of the electrolyte can be ensured, the electrolyte can fully diffuse the whole electrode plate and then flows out from the opposite sides of the whole electrode plate, and accumulated liquid is avoided.
The utility model provides a plate electrode of labyrinth type structure still includes the vortex structure, the vortex structure set up in entry runner department with exit runner department, the vortex structure is used for carrying out the vortex dispersion to the electrolyte of process. In this embodiment, in view of the fact that the flow velocity of the electrolyte is relatively fast when the electrolyte just enters the electrode plate, the turbulent flow structure is additionally arranged at the electrolyte inlet to reduce the flow velocity and shunt the electrolyte, so that the overall flow guiding effect of the electrode plate is improved, the electrolyte just enters the electrode plate, namely, the electrolyte is diffused to the two sides of the electrode plate, and then is sequentially guided and diffused layer by the flow guiding plate.
The turbulent flow structure comprises a left turbulent flow plate 6 and a right turbulent flow plate 7, and the left turbulent flow plate 6 and the right turbulent flow plate 7 are arranged at intervals in the circumferential direction. Specifically, the left side edge of the left spoiler is aligned with the right side edge of the adjacent deflector, the right side edge of the right spoiler is aligned with the left side edge of the adjacent deflector, a gap is arranged between the left deflector and the right deflector, and electrolyte is guided to the left and right sides by the left deflector and the right deflector when passing through the left deflector and the right deflector, so that the electrolyte is further divided by the adjacent deflectors.
The inlet flow channel 4 and the outlet flow channel 5 face a gap between the left spoiler 6 and the right spoiler 7, respectively. The flow obstruction of the electrolyte is reduced, so that the electrolyte can be rapidly introduced into the electrode plate for flow guiding and diffusion.
The gap between the left spoiler 6 and the right spoiler 7 is gradually reduced in the radial direction. During the flowing process of the electrolyte, the path is reduced, so that the electrolyte is forced to diffuse and shunt to two sides during the flowing process.
The number of the deflectors 3 of each flow guiding layer 2 is the same. Therefore, a regular labyrinth structure is formed, the sizes of the guide plates of all layers are sequentially reduced along with the inward shrinkage of the annular track in the radial direction, the guide plates of all layers are guaranteed to have the same guide diffusion effect, and of course, in other embodiments, other forms of designs can be provided, so that the application is not limited to the design.
An electrolytic cell comprises the electrode plate with the labyrinth structure. In this embodiment, the technical effect of the electrolytic cell is the same as that of the electrode plate, and is not described herein again.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. The utility model provides an electrode plate of labyrinth type structure, its characterized in that, the package rubbing board body with set up in water conservancy diversion structure on the plate body, water conservancy diversion structure includes a plurality of water conservancy diversion layers that the plate body footpath set up layer upon layer at an interval are in order to water conservancy diversion to electrolyte layer upon layer, and is a plurality of the water conservancy diversion layer is in concentric setting and each other registrates on the plate body, each the water conservancy diversion layer includes a plurality of guide plates that the interval set up on the circumferencial direction, and adjacent two-layer the each on water conservancy diversion layer the guide plate sets up with the successive layer is to electrolyte water conservancy diversion dispersion in the circumferencial direction is crisscross.
2. The electrode plate of labyrinth type structure as claimed in claim 1, wherein the deflector has an arc-shaped structure, and the concave portion of the deflector is disposed toward the center of the plate body.
3. The electrode plate of labyrinth type structure as set forth in claim 1, wherein the upper top surface of the guide plate is of planar structure.
4. The electrode plate of labyrinth structure as claimed in claim 1, wherein in the radial direction of the plate body, the arc length of the flow guiding plate of the flow guiding layer near the center of the plate body is equal to the gap distance between the flow guiding plates of the flow guiding layer adjacent to and far from the center of the plate body.
5. The electrode plate of labyrinth structure according to claim 1, further comprising an inlet channel and an outlet channel disposed at the edge of the plate body, wherein the inlet channel and the outlet channel are disposed opposite to each other in the radial direction of the plate body.
6. The electrode plate of labyrinth structure of claim 5, further comprising a flow disturbing structure disposed at the entrance runner and the exit runner, the flow disturbing structure being configured to disperse the passing electrolyte by disturbing flow.
7. The electrode plate of claim 6, wherein the flow perturbation structure comprises a left spoiler and a right spoiler, and the left spoiler and the right spoiler are spaced apart from each other in a circumferential direction.
8. The electrode plate of claim 7, wherein the inlet flow channel and the outlet flow channel are directed toward a gap between the left spoiler and the right spoiler, respectively.
9. The electrode plate of claim 7, wherein a gap between the left spoiler and the right spoiler is gradually reduced in a radial direction.
10. The electrode plate of claim 1, wherein the number of flow deflectors in each flow guiding layer is the same.
11. An electrolytic cell comprising an electrode plate of labyrinth structure according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123196810.3U CN217052433U (en) | 2021-12-17 | 2021-12-17 | Electrode plate with labyrinth structure and electrolytic cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123196810.3U CN217052433U (en) | 2021-12-17 | 2021-12-17 | Electrode plate with labyrinth structure and electrolytic cell |
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| CN217052433U true CN217052433U (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395776A (en) * | 2021-12-17 | 2022-04-26 | 中国华能集团清洁能源技术研究院有限公司 | Electrode plate with labyrinth structure and electrolytic cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395776A (en) * | 2021-12-17 | 2022-04-26 | 中国华能集团清洁能源技术研究院有限公司 | Electrode plate with labyrinth structure and electrolytic cell |
| CN114395776B (en) * | 2021-12-17 | 2023-10-03 | 中国华能集团清洁能源技术研究院有限公司 | Electrode plate with labyrinth structure and electrolytic tank |
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