CN220952094U - Polar plate runner device and corresponding polar plate of alkaline water electrolysis bath - Google Patents
Polar plate runner device and corresponding polar plate of alkaline water electrolysis bath Download PDFInfo
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- CN220952094U CN220952094U CN202322989714.7U CN202322989714U CN220952094U CN 220952094 U CN220952094 U CN 220952094U CN 202322989714 U CN202322989714 U CN 202322989714U CN 220952094 U CN220952094 U CN 220952094U
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- polar plate
- plate
- alkaline water
- plane
- runner
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000005868 electrolysis reaction Methods 0.000 title abstract description 23
- 239000003792 electrolyte Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims description 24
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 7
- 230000001788 irregular Effects 0.000 claims description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009954 braiding Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001595 mastoid Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a polar plate runner device of an alkaline water electrolyzer and a corresponding polar plate, belonging to the technical field of alkaline water electrolyzer. The whole polar plate runner device is a cylinder or a cuboid, a plane main board is arranged at the center of the polar plate runner device, and plane runners are arranged at two sides of the plane main board; the two sides of the plane runner are porous planes, the inside of the plane runner is a porous cavity, and a communicating channel is formed by a gap in the cavity. The polar plate comprises a polar plate frame and a polar plate sealing surface, the cross section of the polar plate frame is in a ring shape or a hollow rectangle, and the polar plate runner device is arranged in the polar plate frame. The planar flow channel has the advantages of high contact area and high structural strength, and can fully disturb electrolyte. The electrolyte flow resistance is small, and the electrolyte can be uniformly distributed to any corner in the porous cavity, so that the flow field in the electrolyte cell can be improved, and the reduction of energy consumption and reliable operation of the electrolytic cell are facilitated. Meanwhile, the utility model has simple processing technology and is suitable for preparing large-scale alkaline water electrolysis bath equipment.
Description
Technical Field
The utility model belongs to the technical field of alkaline water electrolysis equipment, and relates to a polar plate runner device of an alkaline water electrolysis tank and a corresponding polar plate.
Background
Green hydrogen energy based on hydrogen production by hydrolysis is developed, so that fluctuation renewable energy sources are eliminated, and 'waste light' and 'waste wind' are avoided; meanwhile, the hydrogen is used as a substitute raw material in the traditional fossil energy high-carbon emission industry, so that carbon emission is reduced, obvious environmental benefits can be generated, and the method has the advantage of cost. The currently commercial water electrolysis hydrogen production technology comprises alkaline water electrolysis and pure water electrolysis hydrogen production. The pure water electrolysis hydrogen production equipment has high integration level and smaller volume, but has higher cost and shorter service life, and is difficult to be suitable for hydrogen production scenes of long-time and high-power stable operation. In the renewable energy hydrogen production project developed at present in China, in view of equipment reliability, operation economy and the like, alkaline water electrolysis hydrogen production is generally adopted.
The alkaline water electrolysis hydrogen production is to introduce direct current into an electrolytic tank filled with alkaline electrolyte, and water molecules are subjected to electrochemical reaction on electrodes to be decomposed into hydrogen and oxygen. Hydrogen energy is an important component of clean energy, and is in the rapid development period of industry, and alkaline water electrolysis hydrogen production devices suitable for the hydrogen energy are developing to large scale. The alkaline water electrolyzer is core equipment in a hydrogen production device, the increase of the alkaline water electrolyzer inevitably increases the number of electrolysis cells, the increase of the electrolysis cells causes the uniformity of a flow field in the electrolyzer to be poor, the temperature difference of each electrolysis cell is increased, the flowing resistance of the electrolyte is increased, the running state of the electrolyzer is poor, and the adverse factors influence the development of the increase of the alkaline water electrolyzer.
The invention application in China with the application number 2020102786989 discloses a polar plate for an alkaline water electrolyzer, which comprises a plate surface and a polar frame, wherein the plate surface and the polar frame can be integrally formed, the plate surface adopts a thin metal plate as a supporting piece and a conductor, the polar frame is formed by injection molding or mould pressing of engineering plastics, the polar plate processing procedure can be remarkably reduced, the processing efficiency is improved, the weight and the cost of the electrolyzer are effectively reduced, and meanwhile, the problem of easy corrosion of the metal polar frame of the traditional polar plate can be effectively avoided, and the weight and the cost of equipment are reduced.
The invention application of China with the application number 2021104870780 discloses a high-current-density alkaline water electrolytic tank structure and a device, wherein the high-current-density alkaline water electrolytic tank structure comprises a left end plate, a cathode current collecting plate, a plurality of electrolytic cell units, an anode current collecting plate and a right end plate which are sequentially overlapped, and the high-current-density alkaline water electrolytic tank structure is formed by fastening a plurality of groups of bolts. The electrolysis cell unit consists of a cathode single-pole plate, an insulating film, an anode single-pole plate and a sealing gasket arranged in the middle; the surfaces of the cathode unipolar plate and the anode unipolar plate are respectively provided with a completely symmetrical flow field, a hydrogen evolution catalyst is coated in the cathode unipolar plate flow field to form a cathode electrode, nickel hydroxide is coated in the anode unipolar plate flow field to form an anode electrode, and the cathode electrode and the anode electrode are separated in an insulating way through an insulating film.
The Chinese invention application with the application number 2023104673921 discloses a composite flow field component for an alkaline water electrolyzer, which comprises a diaphragm, an anode and a cathode which are respectively arranged at two sides of the diaphragm, polar plates arranged at the sides of the anode and the cathode, a polar frame matched with the polar plates, and a liquid outlet and a liquid inlet which are arranged on the polar frame; the area of the polar plate close to the liquid inlet is provided with a hemispherical convex structure and a hemispherical concave structure, and the rest positions are provided with nickel screen structures, and meanwhile, the advantages of the mastoid flow field and the nickel screen flow field are combined.
The polar plate runner of the alkaline water electrolytic tank in the prior art is usually formed by a polar plate with a nipple-shaped bulge or a net-pulling polar plate, and has the problems of large flowing resistance, small flowing area, uneven flow field, complex processing technology and the like.
Disclosure of Invention
The utility model aims to provide a polar plate runner device of an alkaline water electrolysis cell, which improves the contact area of electrolyte and polar plates in the hydrogen production process of alkaline water electrolysis, evenly distributes the flow of the electrolyte, shortens the flow path of the electrolyte in the electrolysis cell, reduces the flow resistance of the electrolyte, and improves the flow field in an electrolysis cell, thereby being beneficial to the reduction of energy consumption and the reliable operation of the electrolysis cell. The aim of the utility model is achieved by the following technical scheme.
The polar plate runner device of the alkaline water electrolytic bath is characterized in that the whole polar plate runner device is a cylinder or a cuboid, a plane main board is arranged at the center of the polar plate runner device, and plane runners are arranged at two sides of the plane main board; the two sides of the plane runner are porous planes, a porous cavity is arranged in the plane runner, and fine communication channels are formed in gaps in the cavity.
Further, the material of the polar plate runner device is metallic nickel or nickel alloy.
Further, the porous cavity has a porosity of 98% or more.
Further, the porous cavity is formed by combining regular three-dimensional structural units, and the three-dimensional structural units are selected from one or more of hexagonal cylinders, triangular cylinders and quadrangular cylinders. Such a three-dimensional structure unit may be produced by a process such as braiding, casting, or the like, so that the constituent units of the porous cavity have a regular three-dimensional structure.
Further, the porous cavity is formed by combining irregular three-dimensional structural units. Such a three-dimensional structural unit may be prepared by a foaming, sintering, or the like process by which a porous cavity composed of irregular three-dimensional structural units is naturally formed.
Further, the communication channels form a labyrinth structure.
The polar plate of the alkaline water electrolyzer is characterized by comprising a polar plate frame and a polar plate sealing surface, wherein the cross section of the polar plate frame is in a circular ring shape or a hollow rectangle, and the polar plate runner device is arranged in the polar plate frame.
Further, a hydrogen outlet hole and an oxygen outlet hole are formed in the upper portion of the polar plate frame, and the hydrogen outlet hole and the oxygen outlet hole are communicated through a guide channel to form a gas path channel.
Further, an electrolyte inlet is formed in the lower portion of the polar plate frame, and the electrolyte inlet is communicated with the polar plate frame through a guide channel to form a liquid path channel.
Further, a power transmission plate is also fixed on the outer side surface of the polar plate frame.
The utility model provides a polar plate runner device of an alkaline water electrolytic tank and a corresponding polar plate, wherein a polar plate frame, a plane main plate and the plane runner form an electrolyte cell cavity, and electrolyte can be contained in the cavity. The planar flow channel has the advantages of high contact area and high structural strength, and can fully disturb electrolyte. The electrolyte flow resistance is small, and the electrolyte can be uniformly distributed to any corner in the porous cavity, so that the flow field in the electrolyte cell can be improved, and the reduction of energy consumption and reliable operation of the electrolytic cell are facilitated. Meanwhile, the polar plate runner device and the corresponding polar plate of the alkaline water electrolyzer provided by the utility model have simple processing technology and are suitable for preparing large-scale alkaline water electrolyzer equipment.
Drawings
Fig. 1 is a front view of a plate according to the present utility model.
Fig. 2 is a rear surface structure diagram of the electrode plate provided by the utility model.
Fig. 3 is a cross-sectional view of A-A of a plate provided by the present utility model.
Reference numerals: the device comprises a 1-polar plate frame, a 2-polar plate sealing surface, a 3-power transmission plate, a 4-electrolyte inlet, a 5-plane flow channel, a 6-hydrogen outlet hole, a 7-oxygen outlet hole and an 8-plane main plate.
Description of the embodiments
The technical scheme of the utility model is clearly and completely described below with reference to the attached drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or position.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
A polar plate runner device of an alkaline water electrolysis bath is shown in figures 1, 2 and 3. The whole polar plate runner device is a cylinder or a cuboid, and is made of metallic nickel or nickel alloy. A planar main board 8 is arranged in the center of the polar plate runner device, and planar runners 5 are arranged on two sides of the planar main board 8; the two sides of the plane runner 5 are porous planes, porous cavities are arranged in the planes, fine communication channels are formed in gaps in the cavities, the communication channels form a labyrinth structure, and the porosity of the porous cavities is more than 98%.
The porous cavity can be formed by combining regular three-dimensional structural units, and the three-dimensional structural units are selected from one or more of hexagonal cylinders, triangular cylinders and quadrangular cylinders. Such a three-dimensional structure unit may be produced by a process such as braiding, casting, or the like, so that the constituent units of the porous cavity have a regular three-dimensional structure.
The porous cavity can also be formed by combining irregular three-dimensional structural units. Such a three-dimensional structural unit may be prepared by a foaming, sintering, or the like process by which a porous cavity composed of irregular three-dimensional structural units is naturally formed.
An alkaline water electrolysis cell plate is shown in figures 1, 2 and 3. The polar plate comprises a polar plate frame 1 and a polar plate sealing surface 2, the section of the polar plate frame 1 is in a ring shape or a hollow rectangle, and the polar plate runner device is arranged in the polar plate frame 1. The upper part of the polar plate frame 1 is provided with a hydrogen outlet hole 6 and an oxygen outlet hole 7, and the hydrogen outlet hole 6 and the oxygen outlet hole 7 are communicated through a guide channel to form a gas path channel. An electrolyte inlet 4 is arranged at the lower part of the polar plate frame 1, and the electrolyte inlet 4 is communicated with a liquid channel through a guide channel. A power transmission plate 3 is also fixed on the outer side surface of the polar plate frame 1.
Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model. The protection scope of the present utility model is defined by the claims and the equivalents thereof.
Claims (10)
1. The polar plate runner device of the alkaline water electrolytic bath is characterized in that the whole polar plate runner device is a cylinder or a cuboid, a plane main board is arranged at the center of the polar plate runner device, and plane runners are arranged at two sides of the plane main board; the two sides of the plane runner are porous planes, a porous cavity is arranged in the plane runner, and a communicating channel is formed by a gap in the cavity.
2. The plate flow field device according to claim 1, wherein the plate flow field device is made of metallic nickel or nickel alloy.
3. The plate flow field device according to claim 1, wherein the porous cavity has a porosity of 98% or more.
4. The plate flow channel device according to claim 1, wherein the porous cavity is formed by combining regular three-dimensional structural units, and the three-dimensional structural units are one or more selected from hexagonal cylinders, triangular cylinders and quadrangular cylinders.
5. The plate flow field device according to claim 1, wherein the porous cavities are formed by an irregular three-dimensional structure of cells.
6. The plate flow field device according to claim 1, wherein the communication channels form a labyrinth structure.
7. A pole plate of an alkaline water electrolyzer, characterized in that the pole plate comprises a pole plate frame and a pole plate sealing surface, the section of the pole plate frame is in a circular ring shape or a hollow rectangle, and the pole plate runner device according to any one of claims 1-6 is arranged inside the pole plate frame.
8. The plate of claim 7 wherein a hydrogen vent and an oxygen vent are formed in the upper portion of the plate frame, the hydrogen vent and the oxygen vent being in communication via a guide channel to form a gas path channel.
9. The plate of claim 7 wherein an electrolyte inlet is formed in the lower portion of the plate frame, the electrolyte inlet being connected by a guide channel to form a fluid path channel.
10. The pole plate of claim 7 wherein a power plate is also secured to the outer side of the pole plate frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989714.7U CN220952094U (en) | 2023-11-07 | 2023-11-07 | Polar plate runner device and corresponding polar plate of alkaline water electrolysis bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322989714.7U CN220952094U (en) | 2023-11-07 | 2023-11-07 | Polar plate runner device and corresponding polar plate of alkaline water electrolysis bath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220952094U true CN220952094U (en) | 2024-05-14 |
Family
ID=91024981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322989714.7U Active CN220952094U (en) | 2023-11-07 | 2023-11-07 | Polar plate runner device and corresponding polar plate of alkaline water electrolysis bath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220952094U (en) |
-
2023
- 2023-11-07 CN CN202322989714.7U patent/CN220952094U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cheng Fan Inventor after: Tang Yingshuang Inventor before: Cheng Fan Inventor before: Tang Yingshuang |
|
| CB03 | Change of inventor or designer information |