Electrolytic cell cleaning device

Abstract

The utility model provides a kind of electrolytic cell cleaning device, including electrolytic cell, the cleaning liquid tank for bearing cleaning liquid, the water tank for bearing deionized water, the cleaning liquid tank is connected to the anode inlet and cathode inlet of electrolytic cell by pipeline, the water tank is connected to the anode inlet and cathode inlet of electrolytic cell by pipeline, and the electrolytic cell side is equipped with interface, flexible duct enters electrolytic cell from interface, and one end of the flexible duct in electrolytic cell is connected with ultrasonic generator device;The utility model can realize the on-line cleaning of electrolytic cell cleaning, without disassembling electrolytic cell.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic cells, and in particular to an electrolytic cell cleaning device. Background Technology

[0002] Existing electrolyzers are prone to overpotential increase and performance degradation after prolonged use. Specific reasons include blockage of membrane active sites and surface oxidation of the gas transport layer. To address these issues, current electrolyzers often need to be scrapped or completely disassembled for cleaning. However, disassembling the electrolyzer leads to increased contact resistance when resealing the membrane electrode indentations. Utility Model Content

[0003] The purpose of this invention is to provide an electrolytic cell cleaning device that can perform online cleaning of electrolytic cells without disassembling the electrolytic cells.

[0004] To solve the above-mentioned technical problems, this utility model provides an electrolytic cell cleaning device, including an electrolytic cell, a cleaning liquid tank for carrying cleaning fluid, and a water tank for carrying deionized water. The cleaning liquid tank is connected to the anode inlet and cathode inlet of the electrolytic cell through pipelines. The water tank is connected to the anode inlet and cathode inlet of the electrolytic cell through pipelines. An interface is provided on one side of the electrolytic cell, and a flexible pipe enters the electrolytic cell through the interface. An ultrasonic generator is connected to one end of the flexible pipe located in the electrolytic cell.

[0005] Furthermore, the anode inlet of the electrolytic cell is connected to the cleaning solution tank and the water tank via pipelines, and the cathode inlet of the electrolytic cell is connected to the cleaning solution tank and the water tank via pipelines.

[0006] Furthermore, a first pump body for conveying cleaning solution is connected between the cleaning solution tank and the electrolytic cell, and a second pump body for conveying deionized water is connected between the water tank and the electrolytic cell; the anode outlet of the electrolytic cell is connected to the cleaning solution tank and the water tank through pipelines, and the cathode outlet of the electrolytic cell is connected to the cleaning solution tank and the water tank through pipelines.

[0007] Furthermore, a power source is connected to the side of the electrolytic cell.

[0008] Furthermore, the flexible pipe includes several protective shells, with flexible rods connecting adjacent protective shells. The wire harness passes through the several protective shells and the flexible rods, with one end of the wire harness connected to the ultrasonic generator and the other end located on the outside of the flexible pipe.

[0009] Furthermore, a pulley is rotatably connected to the side of the protective shell.

[0010] The beneficial effects of this utility model are as follows: When cleaning the electrolytic cell, the cleaning solution in the cleaning solution tank is first transported to the anode inlet of the electrolytic cell to clean it. Then, the cleaning solution is switched to the cathode inlet for cleaning. After the cleaning solution is used up, the cleaning solution tank is turned off, allowing the deionized water in the water tank to clean the anode and cathode inlets of the electrolytic cell in sequence, so as to perform a secondary cleaning of the electrolytic cell and remove any residual cleaning solution. In addition, during the cleaning process, an ultrasonic generator can be used to ultrasonically vibrate the electrolytic cell, improving the cleaning effect. In this process, there is no need to disassemble the electrolytic cell, and the electrolytic cell can be cleaned quickly and conveniently. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the flexible pipe structure in this utility model.

[0013] Reference numerals: 1. Electrolytic cell; 2. Cleaning solution tank; 3. Water tank; 4. Anode inlet; 5. Cathode inlet; 6. Interface; 7. Flexible pipe; 8. Ultrasonic generator; 9. First pump body; 10. Second pump body; 11. Power supply; 12. Protective shell; 13. Flexible rod; 14. Wiring harness; 15. Pulley; 16. Anode outlet; 17. Cathode outlet. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0015] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, the above terms should not be construed as a limitation of this utility model.

[0016] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0017] like Figures 1-2 The present invention provides an electrolytic cell cleaning device, including an electrolytic cell 1, a cleaning liquid tank 2 for holding cleaning liquid, and a water tank 3 for holding deionized water. The cleaning liquid tank 2 is connected to the anode inlet 4 and the cathode inlet 5 of the electrolytic cell 1 through pipelines. The water tank 3 is connected to the anode inlet 4 and the cathode inlet 5 of the electrolytic cell 1 through pipelines. An interface 6 is provided on one side of the electrolytic cell 1, and a flexible pipe 7 enters the electrolytic cell 1 from the interface. An ultrasonic generator 8 is connected to one end of the flexible pipe 7 in the electrolytic cell 1.

[0018] When cleaning the electrolytic cell, the cleaning solution in the cleaning solution tank is first delivered to the anode inlet of the electrolytic cell to clean it. Then, the cleaning solution is switched to the cathode inlet for cleaning. After the cleaning solution is used up, the cleaning solution tank is turned off, allowing the deionized water in the water tank to clean both the anode and cathode inlets of the electrolytic cell in sequence. This facilitates a secondary cleaning of the electrolytic cell and removes any remaining cleaning solution. During the cleaning process, an ultrasonic generator can be used to vibrate the electrolytic cell, improving the cleaning effect. This process eliminates the need to disassemble the electrolytic cell and allows for quick and convenient cleaning.

[0019] The cleaning solution can be one or more of dilute sulfuric acid, hydrogen peroxide, and dilute alkali solution used sequentially; the ultrasonic generator includes an ultrasonic transducer with a frequency of 28kHz±1.5kHz.

[0020] In one embodiment of this solution, the ultrasonic generator is a cylindrical object with a diameter of no more than 30 mm and a length of no more than 50 mm. The outer shell is a multi-layer composite shell, comprising a titanium alloy shell and zirconium oxide ceramic.

[0021] Preferably, the anode inlet 4 of the electrolytic cell 1 is connected to the cleaning liquid tank 2 and the water tank 3 via a pipeline, and the cathode inlet 5 of the electrolytic cell 1 is connected to the cleaning liquid tank 2 and the water tank 3 via a pipeline.

[0022] Specifically, both the anode inlet and cathode inlet of the electrolytic cell can be directly connected to the cleaning solution tank and water tank to ensure the stability of the cleaning solution and deionized water.

[0023] Preferably, a first pump body 9 for conveying cleaning liquid is connected between the cleaning liquid tank 2 and the electrolytic cell 1, and a second pump body 10 for conveying deionized water is connected between the water tank 3 and the electrolytic cell 1; the anode outlet 16 of the electrolytic cell 1 is connected to the cleaning liquid tank 2 and the water tank 3 through a pipeline, and the cathode outlet 17 of the electrolytic cell 1 is connected to the cleaning liquid tank 2 and the water tank 3 through a pipeline.

[0024] Specifically, the cleaning solution and deionized water are stably delivered to the electrolytic cell through the first and second pump bodies. With the connection of the pipelines at the anode outlet and the cathode outlet, the cleaning solution tank and the water tank can form a water circulation through the pump bodies, which effectively increases the efficiency and effect of the cleaning process.

[0025] The first and second pump bodies can be water pumps.

[0026] Preferably, a power supply 11 is connected to the side of the electrolytic cell 1.

[0027] Specifically, during the deionized water cleaning process in the electrolytic cell, a power supply can be connected to the terminal block of the electrolytic cell to briefly energize it. This allows the ions on the surface of the electrolytic cell to be blown to the surface by the gas generated by the cathode and anode under the action of electrolysis, and then carried away by the deionized water, thereby improving the cleaning effect of the electrolytic cell.

[0028] Preferably, the flexible pipe 7 includes a plurality of protective shells 12, and a flexible rod 13 is connected between adjacent protective shells 12. A wire harness 14 passes through the plurality of protective shells 12 and the flexible rod 13, and one end of the wire harness 14 is connected to the ultrasonic generator 8, and the other end is located on the outside of the flexible pipe 7.

[0029] Specifically, the wiring harness inside is protected by several protective shells, which allows the wiring harness to be stably connected to the ultrasonic generator. At the same time, the flexible rods allow the adjacent protective shells to rotate at a certain angle, so that they can be inserted into the inside of the electrolytic cell from the interface or other bending positions.

[0030] The flexible rod can be made of a plastic rod material, and the plastic rod is hollow to ensure the insertion of the wire harness.

[0031] Preferably, the protective shell 12 is rotatably connected to a pulley 15 on its side, so that when the protective shell extends into the inner side of the electrolytic cell through the interface, the friction between the protective shell and the inner wall of the interface can be reduced by the pulley, thereby ensuring the stability of the extension process of the protective shell.

[0032] like Figure 1 As shown, this solution can be used according to the following workflow during its implementation:

[0033] 1. Insert the ultrasonic generator into the electrolytic cell from the interface outside the cell, near the bipolar plate.

[0034] 2. Cleaning with cleaning solution:

[0035] 2.1 Anode Cleaning: Start the first pump; the cleaning solution enters the anode inlet of the electrolytic cell.

[0036] 2.2 Turn on the ultrasonic generator;

[0037] 2.3 After a certain period of time, the impurity ions at the anode of the electrolytic cell are flushed into the cleaning solution tank;

[0038] 2.4 Cleaning the cathode: Change the conveying direction of the cleaning solution tank from the anode inlet to the cathode inlet, and then clean the cathode of the electrolytic cell according to the operation method of cleaning the anode with the cleaning solution;

[0039] 3. Rinse with clean water:

[0040] 3.1 Preparation: The water tank is connected to the anode inlet of the electrolytic cell via the second pump body and pipelines;

[0041] 3.2 Rinsing the anode with clean water: Start the second pump to deliver deionized water for a certain period of time, turn on the ultrasonic generator, and rinse the anode of the electrolytic cell with deionized water;

[0042] 3.3 Clean water flushing of the cathode: Start the second pump to deliver deionized water for a certain period of time, and use the deionized water to flush the cathode of the electrolytic cell clean;

[0043] 3.4 Bubble rinsing of membrane electrodes: Connect the power supply to the terminal block of the electrolytic cell and briefly energize the electrolytic cell. Under the action of electrolysis, the gas generated by the cathode and anode blows the impurity ions adsorbed deep in the electrolyte membrane to the membrane surface and is carried away by deionized water.

[0044] 4. Electrolyzer reset: Disconnect the pipeline connecting the electrolyzer and connect the electrolyzer to the water electrolysis hydrogen production system.

[0045] It is worth mentioning that, with Figure 1 For illustration, the pipeline can be connected to a three-way valve to ensure a stable delivery of cleaning fluid and deionized water. Some of the three-way valves are named V11-V14 and V21-V24. In this solution, the cleaning fluid and deionized water are delivered according to the following route:

[0046] Cleaning solution for anode washing: Cleaning solution route: Cleaning solution tank - first pump body - V11 - V12 - anode inlet - anode outlet - V13 - V14 - cleaning solution tank;

[0047] Cleaning solution for cathode: Cleaning solution route: Cleaning solution tank - first pump body - V11 - V22 - cathode inlet - cathode outlet - V23 - V14 - cleaning solution tank;

[0048] Deionized water flushing of the anode: Deionized water route: Water tank - Second pump body - V21 - V12 - Anode inlet - Anode outlet - V13 - V24 - Water tank;

[0049] Deionized water flushing of the cathode: Deionized water route: Water tank - Second pump body - V21 - V22 - Cathode inlet - Cathode outlet - V23 - V24 - Water tank.

[0050] In one embodiment of this solution, a control system can be set up to automatically control the start and stop of the first pump body and the second pump body, as well as the opening path of each three-way valve; wherein the three-way valve can be replaced by two shut-off valves.

[0051] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. An electrolytic cell cleaning device, characterized in that: The device includes an electrolytic cell (1), a cleaning solution tank (2) for holding the cleaning solution, and a water tank (3) for holding deionized water. The cleaning solution tank (2) is connected to the anode inlet (4) and cathode inlet (5) of the electrolytic cell (1) through a pipeline. The water tank (3) is connected to the anode inlet (4) and cathode inlet (5) of the electrolytic cell (1) through a pipeline. An interface (6) is provided on one side of the electrolytic cell (1). A flexible pipe (7) enters the electrolytic cell (1) from the interface. An ultrasonic generator (8) is connected to one end of the flexible pipe (7) located in the electrolytic cell (1).

2. The electrolytic cell cleaning device according to claim 1, characterized in that: The anode inlet (4) of the electrolytic cell (1) is connected to the cleaning liquid tank (2) and the water tank (3) through a pipeline, and the cathode inlet (5) of the electrolytic cell (1) is connected to the cleaning liquid tank (2) and the water tank (3) through a pipeline.

3. The electrolytic cell cleaning device according to claim 1, characterized in that: A first pump (9) for conveying cleaning liquid is connected between the cleaning liquid tank (2) and the electrolytic cell (1), and a second pump (10) for conveying deionized water is connected between the water tank (3) and the electrolytic cell (1); the anode outlet (16) of the electrolytic cell (1) is connected to the cleaning liquid tank (2) and the water tank (3) through a pipeline, and the cathode outlet (17) of the electrolytic cell (1) is connected to the cleaning liquid tank (2) and the water tank (3) through a pipeline.

4. The electrolytic cell cleaning device according to claim 1, characterized in that: The electrolytic cell (1) is connected to a power source (11) on its side.

5. The electrolytic cell cleaning device according to claim 1, characterized in that: The flexible pipe (7) includes several protective shells (12), and a flexible rod (13) is connected between adjacent protective shells (12). A wire harness (14) passes through several protective shells (12) and the flexible rod (13), and one end of the wire harness (14) is connected to the ultrasonic generator (8), and the other end is located outside the flexible pipe (7).

6. The electrolytic cell cleaning device according to claim 5, characterized in that: The protective shell (12) is rotatably connected to a pulley (15) on its side.

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