Electrolytic cell test apparatus

Abstract

The application discloses an electrolytic cell testing device. The electrolytic cell testing device comprises a cathode pipeline, an anode pipeline and a mixing pipeline. The cathode pipeline can be connected with a cathode chamber of an electrolytic cell to form a cathode circulation loop. The anode pipeline can be connected with an anode chamber of the electrolytic cell to form an anode circulation loop. The mixing pipeline comprises a mixing tank, a first branch and a second branch. The mixing tank is connected in parallel with the cathode circulation loop through the first branch and can be connected with or cut off from the cathode circulation loop. The mixing tank is also connected in parallel with the anode circulation loop through the second branch and can be connected with or cut off from the anode circulation loop. The electrolytic cell testing device can expand the performance testing conditions of the electrolytic cell.

Description

Technical Field

[0001] This application belongs to the field of electrolytic hydrogen production technology, specifically relating to an electrolytic cell testing device. Background Technology

[0002] In water electrolysis for hydrogen production, evaluating the performance of the electrolyzer, identifying its defects and shortcomings, and thus improving product performance and reliability requires comprehensive testing and evaluation using electrolyzer testing equipment. In current electrolyzer testing processes, during dual-sided circulation operation, the different electrolytic reactions at the anode and cathode cause a concentration difference in the alkaline solution on both sides. Existing technology cannot maintain independent flow control on both sides while simultaneously regulating the solution concentration on each side, thus limiting the performance research of the electrolyzer. Utility Model Content

[0003] This application aims to provide an electrolytic cell testing device that addresses at least one of the problems in the background art.

[0004] According to a first aspect of this application, an electrolytic cell testing apparatus is provided, comprising:

[0005] The cathode pipeline is capable of connecting to the cathode chamber of the electrolytic cell to form a cathode circulation loop;

[0006] Anode pipeline, which connects to the anode chamber of the electrolytic cell to form an anode circulation loop;

[0007] The mixing pipeline includes a mixing tank, a first branch, and a second branch. The mixing tank is connected in parallel to the cathode circulation loop via the first branch and can be connected to or disconnected from the cathode circulation loop. The mixing tank is also connected in parallel to the anode circulation loop via the second branch and can be connected to or disconnected from the cathode circulation loop.

[0008] Optionally, the mixing pipeline has a mixing mode and a shutdown mode;

[0009] In the mixing mode, the mixing tank is simultaneously connected to both the cathode circulation loop and the anode circulation loop;

[0010] In the shutdown mode, the mixing tank is simultaneously shut down along with the cathode circulation loop and the anode circulation loop.

[0011] Optionally, the mixing pipeline further includes a first valve and a second valve;

[0012] The first valve is located in the first branch and is used to control the connection and disconnection between the mixing tank and the cathode circulation loop;

[0013] The second valve is located in the second branch and is used to control the connection and disconnection between the mixing tank and the anode circulation loop.

[0014] Optionally, both the first valve and the second valve are proportional control valves.

[0015] Optionally, the cathode circulation loop includes a first gas-liquid separator and a first circulation pump connected in sequence, wherein the first circulation pump is used to drive the liquid flow in the cathode circulation loop;

[0016] The anode circulation loop includes a second gas-liquid separator and a second circulation pump connected in sequence, the second circulation pump being used to drive the liquid flow in the anode circulation loop.

[0017] Optionally, the cathode circulation loop further includes a first flow meter, which is used to detect the liquid flow rate in the cathode circulation loop;

[0018] The anode circulation loop also includes a second flow meter, which is used to detect the liquid flow rate in the anode circulation loop.

[0019] Optionally, the mixing pipeline further includes a third valve and a fourth valve;

[0020] The third valve is located in the first branch and between the first gas-liquid separator and the mixing tank, and the fourth valve is located in the second branch and between the second gas-liquid separator and the mixing tank.

[0021] Optionally, when there is a liquid level difference between the first gas-liquid separator and the second gas-liquid separator, the mixing tank can be simultaneously connected to the first gas-liquid separator and the second gas-liquid separator, and the liquid levels in the first gas-liquid separator and the second gas-liquid separator can be kept in balance.

[0022] Optionally, the cathode circulation loop further includes a first level gauge, which is disposed in the first gas-liquid separator and is used to detect the liquid level in the first gas-liquid separator.

[0023] The anode circulation loop also includes a second level gauge, which is installed in the second gas-liquid separator and is used to detect the liquid level in the second gas-liquid separator.

[0024] Optionally, the electrolytic cell testing equipment further includes an electrolytic power supply, wherein the cathode of the electrolytic power supply is connected to the cathode chamber of the electrolytic cell, and the anode of the electrolytic power supply is connected to the anode chamber of the electrolytic cell.

[0025] In the embodiments of this application, by setting up a mixing pipeline, the mixing tank can be connected in parallel to the cathode circulation loop and the anode circulation loop through the first branch and the second branch, respectively. When the mixing tank achieves independent control of the liquid flow rate of both loops by connecting and disconnecting from the cathode circulation loop and the anode circulation loop, it can also achieve solution mixing of the two loops, thereby achieving forced mixing of the liquids in the two loops in the mixing tank, eliminating the concentration difference, and providing more possibilities for the performance research of the electrolyzer.

[0026] Additional aspects and advantages of this 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 this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of the piping connections for the electrolytic cell testing equipment provided in this application.

[0029] Figure label:

[0030] 1. Mixing tank; 2. Fourth valve; 3. Second level gauge; 4. Second gas-liquid separator; 5. Second circulation pump; 6. Second valve; 7. Anode chamber; 8. Cathode chamber; 9. Third valve; 10. First valve; 11. First circulation pump; 12. First gas-liquid separator; 13. First level gauge; 14. Electrolysis power supply; 15. Second branch; 16. First branch. Detailed Implementation

[0031] Embodiments of this application will now be described in detail. Examples of these embodiments are illustrated 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. All other embodiments obtained by those skilled in the art based on the embodiments in this application are within the scope of protection of this application.

[0032] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 of this application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following is combined with Figure 1 This application describes an electrolytic cell testing apparatus according to an embodiment of the present application.

[0036] like Figure 1 As shown, according to a first aspect of this application, an electrolytic cell testing device is provided, comprising: a cathode pipeline capable of connecting to the cathode chamber 8 of the electrolytic cell to form a cathode circulation loop; an anode pipeline capable of connecting to the anode chamber 7 of the electrolytic cell to form an anode circulation loop; and a mixing pipeline comprising a mixing tank 1, a first branch 16, and a second branch 15, wherein the mixing tank 1 is connected in parallel to the cathode circulation loop through the first branch 16 and is capable of connecting or disconnecting from the cathode circulation loop, and the mixing tank 1 is also connected in parallel to the anode circulation loop through the second branch 15 and is capable of connecting or disconnecting from the cathode circulation loop.

[0037] Specifically, in this embodiment, the cathode pipeline can be connected to the cathode chamber 8 of the electrolytic cell to form a complete cathode circulation loop, ensuring the circulation of liquid on the cathode side. The anode pipeline can be connected to the anode chamber 7 of the electrolytic cell to form a complete anode circulation loop, ensuring the orderly circulation of liquid on the anode side. The mixing tank 1 in the mixing pipeline is connected in parallel to the cathode circulation loop through the first branch 16 and has the function of connecting and disconnecting. It can be selected whether to connect the mixing tank 1 to the cathode circulation loop according to the actual test requirements. At the same time, the mixing tank 1 is also connected in parallel to the anode circulation loop through the second branch 15, which can also realize the connection or disconnection operation with the anode circulation loop.

[0038] In the above structure, the testing equipment can achieve a dual-circulation mode on both the cathode and anode sides, enabling independent control of the anode and anode circulation flow rates. In practical applications, different valves can be connected to the cathode and anode circulation loops according to actual needs. By reasonably adjusting the valves and other control components in each pipeline, the flow rates in the cathode and anode circulation loops can be independently adjusted according to different test scenarios and requirements, meeting diverse test needs. During this process, valve assemblies can also be installed in the first branch 16 and the second branch 15 of the mixing pipeline, allowing the mixing tank 1 to be disconnected from both the cathode and anode circulation loops, thus enabling independent flow control on both the anode and cathode sides.

[0039] Furthermore, during specific testing phases, by opening corresponding branches, both the mixing tank 1 and the anode and cathode circulation loops can be connected. This allows the liquids in both the anode and cathode loops to flow into the mixing tank 1 for forced mixing, thereby enabling adjustment and control of the solution concentration in both loops and providing a suitable liquid environment for the electrolytic cell's performance testing. Additionally, the independence of the cathode and anode circulation loops ensures that the flow rate of the circulating alkaline solution between the anode and cathode remains controllable during liquid mixing, guaranteeing the stability and accuracy of the entire testing process.

[0040] The testing equipment provided in this application can better simulate various operating conditions of an electrolytic cell during actual operation. It can be used in the dual-circulation mode of the anode and cathode to control the circulation flow rate and alkali concentration of the anode and cathode separately. It can also be used to mix the anode and cathode alkali solutions during operation to achieve the effect of alkali solution mixing while the circulation flow rate of the anode and cathode alkali solutions is controllable. This helps to gain a deeper understanding of the performance characteristics of the electrolytic cell and can better provide simulation conditions for the development of electrolytic cells.

[0041] For example, in the process of hydrogen production in an alkaline electrolyzer, the principle is to use direct current to pass through an alkaline electrolyte solution (usually a 20%-30% KOH solution) to induce an electrochemical reaction in water molecules, decomposing them into hydrogen and oxygen. In the alkaline electrolyzer, the current drives water molecules to be reduced to hydrogen in the cathode chamber 8, while simultaneously in the anode chamber 7, hydroxide ions are oxidized to oxygen. The alkaline electrolyte provides the ion conduction pathway, and the diaphragm prevents gas mixing. Specifically, water molecules at the cathode undergo reduction by accepting electrons, and the OH- ions generated at the cathode need to migrate through the diaphragm to the anode chamber 7. During this synchronous migration, water molecules from the cathode are dragged towards the anode, resulting in an increase in the alkaline concentration at the cathode and a decrease in the alkaline concentration at the anode. As the reaction proceeds, the concentration difference between the anode and cathode gradually increases.

[0042] In the aforementioned testing equipment, a single-sided anode circulation mode can be performed. In this mode, the hydrogen gas produced by the cathode reaction, along with the alkaline solution and water that permeate to the cathode through the diaphragm, undergoes gas-liquid separation in the cathode circulation loop (first gas-liquid separator 12), producing hydrogen gas which then enters the downstream phase. This loop can be used to test the electrolytic cell with single-sided anode circulation and no cathode circulation. Additionally, the aforementioned testing equipment can also perform double-sided circulation tests on the electrolytic cell, such as... Figure 1 As shown, the left side is the anolyte circulation loop, and the right side is the anolyte circulation loop. As the reaction proceeds, the concentration difference of the alkali solution between the anode and cathode gradually increases. At this point, by opening the first branch 16 and the second branch 15, a portion of the alkali solution from both the anode and cathode can flow into the mixing tank 1. After the mixture in the mixing tank 1 is fully mixed, the valves of each circuit can be controlled to achieve hydraulic balance in both circuits while simultaneously achieving alkali solution mixing between the anode and cathode. This achieves the goal of alkali solution mixing while maintaining independent flow control on both sides.

[0043] Optionally, such as Figure 1 As shown, the mixing pipeline has a mixing mode and a shut-off mode; in the mixing mode, the mixing tank 1 is simultaneously connected to the cathode circulation loop and the anode circulation loop; in the shut-off mode, the mixing tank 1 is simultaneously disconnected from the cathode circulation loop and the anode circulation loop.

[0044] Specifically, in this embodiment, the mixing mode and shut-off mode of the mixing pipeline can be applied to different test environments of the electrolyzer. In the mixing mode, mixing tank 1 is simultaneously connected to both the cathode and anode circulation loops, allowing the liquids in both loops to be thoroughly mixed within mixing tank 1, providing a basis for optimizing the internal chemical reaction conditions of the electrolyzer. Furthermore, regarding temperature uniformity control, the alkali solution temperature in the anode and cathode circulation loops may be uneven due to differences in exothermic or heat dissipation during the reaction. The mixing mode allows alkali solutions of different temperatures to be mixed, quickly adjusting the overall alkali solution temperature to achieve uniformity. This avoids the impact of excessively high or low local temperatures on the electrolyzer's performance and lifespan, ensuring a stable and reliable test environment.

[0045] In the shutdown mode, mixing tank 1 is simultaneously disconnected from both the cathode and anode circulation loops, ensuring the independence and accuracy of the test. When studying the performance of a single electrode, the shutdown mixing mode avoids interference from the alkali solution on the other side, allowing for accurate acquisition of data from the cathode or anode operating independently. This provides a precise basis for targeted optimization of electrode design and reaction conditions. Simultaneously, the shutdown mode reduces unnecessary alkali flow and mixing processes, lowering equipment energy consumption and alkali loss, thus improving the economic efficiency and environmental friendliness of the testing process.

[0046] Optionally, such as Figure 1As shown, the mixing pipeline also includes a first valve 10 and a second valve 6; the first valve 10 is located on the first branch 16 and is used to control the connection and disconnection between the mixing tank 1 and the cathode circulation loop; the second valve 6 is located on the second branch 15 and is used to control the connection and disconnection between the mixing tank 1 and the anode circulation loop.

[0047] Specifically, in this embodiment, the opening and closing of the first valve 10 and the second valve 6 control the connection and disconnection between the mixing tank 1 and the cathode circulation loop and the anode circulation loop, respectively. This allows for the selection of opening or closing the first valve 10 or the second valve 6 individually or simultaneously, based on actual testing needs, thereby individually controlling the connection state between the mixing tank 1 and the cathode or anode circulation loop. Through the combined control of these two valves, various different testing modes can be achieved. For example, one circulation loop can be connected to the mixing tank 1 individually, or both valves can be opened simultaneously to connect the mixing tank 1 to both the cathode and anode circulation loops, enabling alkali mixing testing; or both valves can be closed simultaneously, allowing the cathode and anode circulation loops to operate independently without interaction with the mixing tank 1.

[0048] When mixing of caking and anode alkaline solutions is not required, the first valve 10 and the second valve 6 can effectively disconnect the mixing tank 1 from the anode and anode circulation loops, preventing accidental mixing of alkaline solutions. This is crucial for some testing experiments with strict requirements on the purity and composition of the alkaline solutions, avoiding inaccurate experimental data caused by alkaline mixing and ensuring the stability and reliability of test results. When maintenance, repair, or cleaning of the mixing tank 1 or a particular circulation loop is required, the corresponding valves can be closed to isolate that part from the overall system. This does not affect the normal operation of other parts, provides a safe and convenient operating environment for maintenance personnel, reduces the difficulty and risk of maintenance work, and improves the overall operating efficiency and reliability of the equipment.

[0049] Optionally, such as Figure 1 As shown, both the first valve 10 and the second valve 6 are proportional control valves.

[0050] Specifically, a proportional control valve is an actuator that can control fluid flow rate, pressure and other parameters in proportion to the magnitude of the input signal. By continuously adjusting the valve opening, it can achieve precise and continuous control of fluid flow rate, pressure and other parameters, so that the controlled parameters change according to a predetermined pattern.

[0051] In this embodiment, both the first valve 10 and the second valve 6 are proportional control valves. This allows for precise control of the connectivity between the mixing tank 1 and the cathode / anode circulation loops, as well as the alkali flow rate, according to actual testing requirements. This enables easy switching between various testing modes, such as precisely adjusting the ratio of anode to cathode alkali entering the mixing tank 1 to meet complex and varied testing scenarios. Furthermore, the proportional control valve can dynamically adjust the flow rate in real time, effectively addressing flow fluctuations caused by factors such as pressure and temperature during testing. This ensures a stable alkali flow rate into the mixing tank 1 and allows for the active creation and maintenance of environments with arbitrary concentration differences to study their impact on electrolysis performance. The dynamic mixing process also avoids a decrease in reaction efficiency due to concentration differences, improving testing accuracy.

[0052] Optionally, such as Figure 1 As shown, the cathode circulation circuit includes a first gas-liquid separator 12 and a first circulation pump 11 connected in sequence. The first circulation pump 11 is used to drive the liquid flow in the cathode circulation circuit. The anode circulation circuit includes a second gas-liquid separator 4 and a second circulation pump 5 connected in sequence. The second circulation pump 5 is used to drive the liquid flow in the anode circulation circuit.

[0053] Specifically, in this embodiment, for the cathode circulation loop, after the liquid flows out of the cathode chamber 8 of the electrolytic cell, it enters the first gas-liquid separator 12. Inside the first gas-liquid separator 12, due to the different densities of the gas and liquid generated during electrolysis, they can naturally separate under gravity. The gas rises to the upper part of the tank, while the liquid settles at the lower part. The purified cathode liquid after gas-liquid separation flows continuously along the cathode circulation loop under the action of the first circulation pump 11, eventually returning to the cathode chamber 8 of the electrolytic cell, forming a complete cycle. In the anode circulation loop, the liquid flowing out of the anode chamber 7 of the electrolytic cell enters the second gas-liquid separator 4 to complete gas-liquid separation. The gas and liquid separate, the gas is discharged, and the liquid remains at the bottom of the tank. Subsequently, the second circulation pump 5 starts, providing the necessary power to the anode liquid, causing it to flow along a set path in the anode circulation loop, eventually returning to the anode chamber 7 of the electrolytic cell, forming a cycle on the anode side.

[0054] In the aforementioned circuits, the first gas-liquid separator 12 and the second gas-liquid separator 4 effectively separate the gases generated during electrolysis, preventing gas accumulation in the circulation circuit and avoiding problems such as gas resistance and pump cavitation caused by gas presence. This ensures the stable operation of the circulation circuit and also improves the operating efficiency of the electrolytic cell. The first circulation pump 11 and the second circulation pump 5 provide reliable power support for the cathode and anode circulation circuits. They can precisely control the flow rate and pressure of the liquid according to testing requirements, ensuring stable and uniform liquid flow in the circuit. This not only facilitates the uniformity of electrode reactions within the electrolytic cell, improving the performance and product quality of the electrolytic cell, but also allows researchers to precisely control and study the electrolysis process.

[0055] The independently configured cathode and anode circulation loops provided in this application, combined with the gas-liquid separator and circulation pump, enable the circulation systems on both sides of the anode and cathode to operate independently yet collaboratively. In practical applications, the parameters of the anode and cathode circulation loops can be adjusted and optimized separately to better simulate different actual working conditions, providing more flexible and accurate testing conditions for the development and performance research of electrolyzers.

[0056] Optionally, such as Figure 1 As shown, the cathode circulation loop also includes a first flow meter, which is used to detect the liquid flow rate in the cathode circulation loop; the anode circulation loop also includes a second flow meter, which is used to detect the liquid flow rate in the anode circulation loop.

[0057] Specifically, in this embodiment, the first and second flow meters can detect the liquid flow rate in the anode and cathode circulation loop in real time and accurately. Based on the data fed back from the flow meters, the speed of the circulation pump or other control components can be precisely adjusted to accurately control the liquid flow rate entering the anode and cathode of the electrolytic cell. This ensures that the electrolysis reaction proceeds under stable and suitable conditions, contributing to improved electrolysis efficiency and product quality. Furthermore, the detailed flow information obtained by the flow meters allows for understanding the performance changes of the electrolytic cell under different flow rates, such as current efficiency and energy consumption, providing strong data support for the optimized design of the electrolytic cell. In addition, the flow meters can monitor abnormal flow conditions in the circulation loop in real time, ensuring the safe and stable operation of the entire electrolytic cell testing equipment.

[0058] Optionally, such as Figure 1 As shown, the mixing pipeline also includes a third valve 9 and a fourth valve 2; the third valve 9 is located in the first branch 16 and between the first gas-liquid separator 12 and the mixing tank 1, and the fourth valve 2 is located in the second branch 15 and between the second gas-liquid separator 4 and the mixing tank 1.

[0059] Specifically, in this embodiment, the third valve 9 and the fourth valve 2 allow for more flexible control of the connection between the cathode and anode circulation loops and the mixing tank 1 in practical applications. When it is necessary to study the characteristics of the cathode or anode circulation loop separately, the corresponding valve can be closed to isolate the loop from the mixing tank 1, avoiding interference from the other loop and thus accurately obtaining data for a single loop. When it is necessary to mix the anode and cathode liquids for comprehensive testing, both valves can be opened simultaneously to achieve smooth mixing of the liquids and meet diverse testing needs.

[0060] Optionally, such as Figure 1 As shown, when there is a liquid level difference between the first gas-liquid separator 12 and the second gas-liquid separator 4, the mixing tank 1 can be connected to the first gas-liquid separator 12 and the second gas-liquid separator 4 simultaneously, and the liquid levels in the first gas-liquid separator 12 and the second gas-liquid separator 4 can be kept in balance.

[0061] Specifically, during electrolysis, the reactions at the cathode and anode may differ, leading to different liquid levels in the first gas-liquid separator 12 and the second gas-liquid separator 4. If this level difference persists and is not effectively regulated, it may affect the normal flow of liquid in the circuit and even damage the equipment. Connecting the mixing tank 1 to both tanks simultaneously not only achieves the mixing of liquids on both sides but also allows the mixed liquid in the mixing tank 1 to automatically flow back into the anode and cathode circuits via the level difference. This promptly eliminates the level difference between the two gas-liquid separators, ensuring the entire electrolytic cell testing system operates under relatively stable pressure and level conditions, thus improving the system's reliability and stability.

[0062] For example, during the double-sided circulation test of the electrolytic cell, the concentration difference of the alkali solution between the anode and cathode gradually increases. By opening the third valve 9 and the fourth valve 2 on the two branches, a portion of the alkali solution on both sides of the anode and cathode can flow into the alkali solution buffer tank, achieving mixing of the anode and cathode alkali solutions. After the liquid in the mixing tank 1 is fully mixed, the valves entering the gas-liquid separators on both sides are controlled by the liquid level difference, thereby maintaining liquid level balance while achieving mixing of the anode and cathode alkali solutions, thus achieving the purpose of uniform alkali solution concentration. This design utilizes the liquid level difference of the original gas-liquid separators in the system to drive the reflux, eliminating the need for additional pumping equipment.

[0063] Optionally, such as Figure 1 As shown, the cathode circulation circuit also includes a first liquid level gauge 13, which is installed in the first gas-liquid separator 12 and is used to detect the liquid level in the first gas-liquid separator 12; the anode circulation circuit also includes a second liquid level gauge 3, which is installed in the second gas-liquid separator 4 and is used to detect the liquid level in the second gas-liquid separator 4.

[0064] Specifically, in this embodiment, the level gauges installed in the circulation loops on both the positive and negative sides can provide real-time and accurate feedback on the liquid level in the gas-liquid separator, allowing for timely understanding of the liquid level in the circulation loops. When the liquid level is too high, it may indicate blockages or poor liquid circulation in the circulation loop. If not addressed promptly, this could lead to liquid overflow, damaging the equipment or causing a safety accident. Conversely, a low liquid level may affect the normal progress of the electrolysis reaction, reducing electrolysis efficiency. By monitoring the level gauges, parameters such as the flow rate of the circulation pump and the current density of the electrolytic cell can be adjusted based on the performance of the electrolytic cell at different liquid levels, such as current efficiency and energy consumption. This ensures that the electrolysis process operates under optimal conditions, guaranteeing the stable operation of the entire electrolytic cell testing system.

[0065] Optionally, such as Figure 1 As shown, the electrolytic cell testing equipment also includes an electrolytic power supply 14, the cathode of which is connected to the cathode chamber 8 of the electrolytic cell, and the anode of which is connected to the anode chamber 7 of the electrolytic cell.

[0066] Specifically, in this embodiment, the electrolytic power supply 14 can possess multiple safety protection functions, such as overcurrent protection, overvoltage protection, and short-circuit protection. During electrolytic cell testing, various abnormal situations may occur, such as electrode short circuits and liquid leaks. These situations may cause a sharp increase in current or voltage, posing serious hazards to equipment and personnel. The safety protection mechanism of the electrolytic power supply 14 can promptly detect these abnormalities and quickly cut off the power supply, effectively protecting the safe operation of the electrolytic cell equipment. Furthermore, different types of electrolytic cells and electrolytic reactions have different power supply requirements. The versatility and adjustability of the electrolytic power supply 14 enable it to adapt to various complex testing needs, greatly expanding the research scope of electrolytic cell testing equipment and covering more electrolytic systems and process conditions.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrolytic cell testing apparatus, characterized by, include: The cathode pipeline is capable of connecting to the cathode chamber of the electrolytic cell to form a cathode circulation loop; Anode pipeline, which connects to the anode chamber of the electrolytic cell to form an anode circulation loop; The mixing pipeline includes a mixing tank, a first branch, and a second branch. The mixing tank is connected in parallel to the cathode circulation loop via the first branch and can be connected to or disconnected from the cathode circulation loop. The mixing tank is also connected in parallel to the anode circulation loop via the second branch and can be connected to or disconnected from the cathode circulation loop.

2. The electrolytic cell testing apparatus of claim 1, wherein, The hybrid pipeline has a hybrid mode and a shutdown mode; In the mixing mode, the mixing tank is simultaneously connected to both the cathode circulation loop and the anode circulation loop; In the shutdown mode, the mixing tank is simultaneously shut down along with the cathode circulation loop and the anode circulation loop.

3. The electrolytic cell testing apparatus of claim 1, wherein, The mixing pipeline also includes a first valve and a second valve; The first valve is located in the first branch and is used to control the connection and disconnection between the mixing tank and the cathode circulation loop; The second valve is located in the second branch and is used to control the connection and disconnection between the mixing tank and the anode circulation loop.

4. The electrolytic cell testing equipment according to claim 3, characterized in that, Both the first valve and the second valve are proportional control valves.

5. The electrolyzer test apparatus of claim 1, wherein, The cathode circulation loop includes a first gas-liquid separator and a first circulation pump connected in sequence. The first circulation pump is used to drive the liquid flow in the cathode circulation loop. The anode circulation loop includes a second gas-liquid separator and a second circulation pump connected in sequence, the second circulation pump being used to drive the liquid flow in the anode circulation loop.

6. The electrolytic cell testing apparatus of claim 5, wherein, The cathode circulation loop also includes a first flow meter, which is used to detect the liquid flow rate in the cathode circulation loop; The anode circulation loop also includes a second flow meter, which is used to detect the liquid flow rate in the anode circulation loop.

7. The electrolytic cell testing apparatus of claim 5, wherein, The hybrid pipeline also includes a third valve and a fourth valve; The third valve is located in the first branch and between the first gas-liquid separator and the mixing tank, and the fourth valve is located in the second branch and between the second gas-liquid separator and the mixing tank.

8. The electrolytic cell testing apparatus of claim 5, wherein, When there is a liquid level difference between the first gas-liquid separator and the second gas-liquid separator, the mixing tank can be connected to the first gas-liquid separator and the second gas-liquid separator simultaneously, and the liquid levels in the first gas-liquid separator and the second gas-liquid separator can be kept in balance.

9. The electrolytic cell testing apparatus of claim 8, wherein, The cathode circulation loop also includes a first liquid level gauge, which is installed in the first gas-liquid separator and is used to detect the liquid level in the first gas-liquid separator. The anode circulation loop also includes a second level gauge, which is installed in the second gas-liquid separator and is used to detect the liquid level in the second gas-liquid separator.

10. The electrolyzer test apparatus of claim 1, wherein, It also includes an electrolytic power source, the cathode of which is connected to the cathode chamber of the electrolytic cell, and the anode of which is connected to the anode chamber of the electrolytic cell.

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