A device for detecting the current of an AEM electrolytic water hydrogen production electrolyzer
By using a colorimetric membrane and dye solution to simulate water flow distribution in an AEM electrolyzer, the problem of flow detection in the electrolyzer was solved, enabling intuitive and accurate flow field detection and supporting electrolyzer structure optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU KAICHEN ENERGY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-07-21
AI Technical Summary
Existing AEM water electrolysis for hydrogen production is difficult to accurately detect during the design process, resulting in uneven water distribution, which may cause damage to the electrolyzer. Furthermore, the reliability of simulation calculation results is difficult to verify.
A colorimetric membrane is used instead of a membrane electrode. The flow distribution is simulated by injecting a colorimetric dye solution. The flow field distribution is observed by the staining reaction. The staining of the electrode plate is observed by combining a transparent plate and a colorimetric membrane, thus achieving intuitive detection.
It provides intuitive and accurate flow field distribution detection results, is simple to operate, low in cost, has no adverse effects on electrolytic cell materials, is easy to clean, and supports electrolytic cell structure optimization.
Smart Images
Figure CN224531063U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of AEM water electrolysis hydrogen production technology, and in particular to a flow detection device for an AEM water electrolysis hydrogen production electrolyzer. Background Technology
[0002] AEM (Alkaline Electrolysis) is a method for producing hydrogen by electrolyzing alkaline water. The electrolyzer has advantages such as small equipment size, high gas purity, and good compatibility with renewable energy sources, making it the main development direction for future electrolytic hydrogen production.
[0003] However, the existing AEM electrolysis water electrolysis hydrogen production electrolyzers require testing of the flow conditions during the design process. If the water distribution in the AEM electrolyzer is uneven, it will cause local water shortage and dry burning, leading to the ablation of the diffusion layer and electrode plates, and even directly causing the electrolyzer to be destroyed. (In order to pursue low energy consumption, the closer the distance between the layers in the electrolyzer, the better; however, an overly dense structure may affect the gas-liquid distribution and even cause short circuits. Therefore, when designing and assembling the electrolyzer, it is necessary to ensure that the water flow field distribution in the electrolyzer is uniform.)
[0004] Currently, simulation software is generally used to simulate and calculate the water field distribution within an electrolyzer for rational design. However, since the AEM electrolyzer is a zero-gap electrolyzer with various materials tightly bonded together, the water distribution cannot be accurately measured, making it difficult to determine the reliability of the simulation results. This hinders further optimization of the simulation results and impedes improvements to the electrolyzer structure. Therefore, a flow detection device for AEM water electrolysis to hydrogen production electrolyzers is urgently needed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a flow detection device for an AEM electrolysis water electrolysis hydrogen production electrolyzer. This device can directly reflect the distribution of the flow field in the AEM electrolyzer and has many advantages such as intuitive test results, simple operation, no adverse effects on various materials in the electrolyzer, and easy cleaning. It can meet the technical development needs of AEM electrolyzers.
[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an AEM electrolysis water-to-hydrogen electrolyzer flow detection device, the innovation of which is: including a support frame, an electrolyzer unit, an electrolyzer clamping module and a detection liquid pumping module; The support frame includes a first column and a second column; a horizontal beam is provided at the top of the first column, and a transparent plate is provided at the end of the beam along the vertical direction, and a membrane electrode is provided on the surface of the transparent plate along the vertical direction, and a color developing film is provided on the membrane electrode; the second column is parallel to the first column and is provided on one side of the transparent plate. The electrolytic cell clamping module is horizontally positioned on the top of the second column, facing the transparent plate. The electrolytic cell clamping module includes a clamping cylinder and an end plate. The clamping cylinder is horizontally positioned on the top of the second column, and the end plate is vertically positioned at the output end of the clamping cylinder. The end plate is used to mount the electrode plate to be tested for current flow. By mounting the electrode plate on the end plate, the clamping cylinder drives the electrode plate to press against the membrane electrode. The membrane electrode, the electrode plate, and the end plate form an electrolytic cell unit. The detection liquid pumping module is located on one side of the support frame, and the detection liquid pumping module is equipped with a color-developing dye. By pumping the color-developing dye into the electrode plate, the current flow detection of the electrode plate in the electrolytic cell unit can be realized by observing the contact and staining of the color-developing membrane with the color-developing dye.
[0007] Furthermore, the color-developing membrane is a starch-dyed membrane made from a mixture of starch and cellulose; the color-developing dye solution is a potassium iodide solution.
[0008] Furthermore, a liquid-holding container is provided below the transparent plate.
[0009] Furthermore, the detection liquid pumping module includes a detection liquid tank, a pump, a pumping pipe, and a pumping pipe; the detection liquid tank is located on one side of the support frame, the pump is located on the upper surface of the detection liquid tank, and the pump is driven by a motor; the input end of the pump is connected to the pumping pipe, and the bottom end of the pumping pipe extends into the detection liquid tank; the pumping pipe is located on the output end of the pump, and an electromagnetic control valve is installed on the pumping pipe, and the output end of the pumping pipe is connected to the electrolytic cell unit.
[0010] The advantages of this utility model are: 1) In this invention, a color-developing membrane replaces the membrane electrode in the AEM electrolytic cell, and a color-developing dye solution is injected into the AEM electrolytic cell, replacing electrolyzed water. Utilizing the characteristic that the dyed membrane can react with the dye solution, the dyeing status at various locations on the membrane is observed, thus simulating the distribution of water flow onto the membrane electrode. This allows for a direct assessment of the water flow distribution at each location on the membrane electrode. This device can directly reflect the flow field distribution within the AEM electrolytic cell and has advantages such as accurate test results, simple operation, no adverse effects on various materials within the electrolytic cell, easy cleaning, and low cost, meeting the technological development needs of AEM electrolytic cells. Attached Figure Description
[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0012] Figure 1 This is a structural diagram of a flow detection device for an AEM water electrolysis hydrogen production electrolyzer according to the present invention. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0015] like Figure 1 The device shown is an AEM electrolysis water electrolysis hydrogen production electrolyzer flow detection device, which includes a support frame 1, an electrolyzer unit 2, an electrolyzer clamping module 3, and a detection liquid pumping module 4.
[0016] The support frame 1 includes a first column 11 and a second column 12; a horizontal beam 13 is provided at the top of the first column 11, and a transparent plate 14 is provided at the end of the beam 13 along the vertical direction, and a membrane electrode 15 is provided on the surface of the transparent plate 14 along the vertical direction, and a color developing film is provided on the membrane electrode 15; the second column 12 is parallel to the first column 11 and is provided on one side of the transparent plate 14.
[0017] The electrolytic cell clamping module 3 is horizontally positioned on the top of the second column 12, and is positioned directly opposite the transparent plate 14. The electrolytic cell clamping module 3 includes a clamping cylinder 31 and an end plate 32. The clamping cylinder 31 is horizontally positioned on the top of the second column 12, and the end plate 32 is positioned vertically at the output end of the clamping cylinder 31. The end plate 32 is used to install the electrode plate 33 to be detected. By installing the electrode plate 33 on the end plate 32, the clamping cylinder 31 drives the electrode plate to be clamped onto the membrane electrode. The membrane electrode 15, the electrode plate 33, and the end plate 32 form the electrolytic cell unit 2.
[0018] The detection liquid pumping module 4 is located on one side of the support frame 1, and the detection liquid pumping module 4 is equipped with a color developing dye. By pumping the color developing dye into the electrode plate, the current flow detection of the electrode plate in the electrolytic cell unit 2 can be realized by observing the color development dye in contact with the color developing membrane.
[0019] The color-developing membrane is a starch-stained membrane made from a mixture of starch and cellulose; the color-developing dye solution is a potassium iodide solution.
[0020] A liquid-holding container 16 is provided below the transparent plate 14.
[0021] The detection liquid pumping module 4 includes a detection liquid tank 41, a pump 42, a pumping pipe 43, and a pumping pipe 44. The detection liquid tank 41 is located on one side of the support frame, the pump 42 is located on the upper surface of the detection liquid tank 41, and the pump 42 is driven by a motor. The input end of the pump 42 is connected to the pumping pipe 43, and the bottom end of the pumping pipe 43 extends into the detection liquid tank 41. The pumping pipe 44 is located on the output end of the pump 42, and an electromagnetic control valve is installed on the pumping pipe 44. The output end of the pumping pipe 44 is connected to the electrolytic cell unit 2.
[0022] The working principle of this invention is as follows: A color-developing membrane replaces the membrane electrode in an AEM electrolytic cell, and a color-developing dye solution is injected into the cell, replacing electrolyzed water. Utilizing the characteristic that the dyed membrane reacts with the dye solution, the dyeing pattern at different locations on the membrane is observed, thus simulating the distribution of water flow onto the membrane electrode. This allows for a direct assessment of the water flow distribution at each location on the membrane electrode. This device can directly reflect the flow field distribution within the AEM electrolytic cell and offers numerous advantages, including accurate test results, simple operation, no adverse effects on materials within the electrolytic cell, easy cleaning, and low cost, meeting the technological development needs of AEM electrolytic cells.
[0023] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A current flow detection device for an AEM water electrolysis hydrogen production electrolyzer, characterized in that: Includes a support frame, an electrolytic cell unit, an electrolytic cell clamping module, and a detection liquid pumping module; The support frame includes a first column and a second column; a horizontal beam is provided at the top of the first column, and a transparent plate is provided at the end of the beam along the vertical direction, and a membrane electrode is provided on the surface of the transparent plate along the vertical direction, and a color developing film is provided on the membrane electrode; the second column is parallel to the first column and is provided on one side of the transparent plate. The electrolytic cell clamping module is horizontally positioned on the top of the second column, facing the transparent plate. The electrolytic cell clamping module includes a clamping cylinder and an end plate. The clamping cylinder is horizontally positioned on the top of the second column, and the end plate is vertically positioned at the output end of the clamping cylinder. The end plate is used to mount the electrode plate to be tested for current flow. By mounting the electrode plate on the end plate, the clamping cylinder drives the electrode plate to press against the membrane electrode. The membrane electrode, the electrode plate, and the end plate form an electrolytic cell unit. The detection liquid pumping module is located on one side of the support frame, and the detection liquid pumping module is equipped with a color-developing dye. By pumping the color-developing dye into the electrode plate, the current flow detection of the electrode plate in the electrolytic cell unit can be realized by observing the contact and staining of the color-developing membrane with the color-developing dye.
2. The current flow detection device for an AEM water electrolysis hydrogen production electrolyzer according to claim 1, characterized in that: A liquid-holding tank is located below the transparent plate.
3. The current flow detection device for an AEM water electrolysis hydrogen production electrolyzer according to claim 1, characterized in that: The detection liquid pumping module includes a detection liquid tank, a pump, a pumping pipe, and a pumping pipe. The detection liquid tank is located on one side of the support frame, the pump is located on the upper surface of the detection liquid tank, and the pump is driven by a motor. The input end of the pump is connected to the pumping pipe, and the bottom end of the pumping pipe extends into the detection liquid tank. The pumping pipe is located at the output end of the pump, and an electromagnetic control valve is installed on the pumping pipe. The output end of the pumping pipe is connected to the electrolytic cell unit.