Novel device for detecting air tightness of electrolytic cell

Abstract

The utility model belongs to the technical field of electrolytic bath quality detection, and particularly discloses a novel electrolytic bath air tightness detection device. The electrolytic bath airtightness detection device comprises a water tank and an electrolytic bath, the water tank sequentially communicates with the first electric ball valve, the centrifugal pump, the second electric ball valve and the electrolytic cell through pipelines. The electrolytic bath is connected with the third electric ball valve and the water tank through pipelines, and a pressure detection sensor is arranged between the electrolytic bath and the third electric ball valve; and the other end of the first electric ball valve is connected with the plunger pump, the fourth electric ball valve and the electrolytic bath through pipelines. Through precise cooperation of the plurality of electric ball valves, the plurality of transportation pipelines, the plunger pump and the centrifugal pump, tight connection and efficient operation of three links of water injection, pressure maintaining and water return are realized, so that rapid and convenient leakage detection of the electrolytic cell is ensured. According to the air tightness detection device for the electrolytic cell, the working efficiency is improved, the operation convenience is enhanced, and the leakage detection work of the electrolytic cell is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cell quality detection, in particular to a novel electrolytic cell air tightness detection device. Background Art

[0002] With the transformation and upgrading of the global energy structure, hydrogen energy, as a clean and efficient energy form, is receiving more and more attention and importance. As a key link in the hydrogen energy industry chain, the development level of water electrolysis technology directly affects the production efficiency and cost of hydrogen energy. As the core equipment of water electrolysis technology, the stability and reliability of the performance of the electrolyzer are crucial.

[0003] During long-term operation, electrolyzers often leak due to factors such as material aging, improper operation, and changes in the external environment. Leakage not only leads to a decrease in electrolysis efficiency, but also may cause safety accidents, posing a serious threat to production safety and personnel health. Therefore, ensuring the sealing performance of the electrolyzer is a key issue that needs to be solved in water electrolysis technology.

[0004] Therefore, the utility model proposes a novel electrolytic cell air tightness detection device. Utility Model Content

[0005] The utility model aims to provide a novel electrolytic cell air tightness detection device, which can efficiently and conveniently detect the air tightness of the electrolytic cell and improve the production safety of the water electrolysis hydrogen production technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A novel electrolytic cell air tightness detection device comprises a water tank and an electrolytic cell;

[0008] The water tank contains water used for testing;

[0009] The water tank is connected to one end of the first electric ball valve, the other end of the first electric ball valve is connected to one end of the centrifugal pump, the other end of the centrifugal pump is connected to one end of the second electric ball valve, and the other end of the second electric ball valve is connected to the electrolytic cell;

[0010] The electrolytic cell is connected to one end of the third electric ball valve, and the other end of the third electric ball valve is connected to the water tank, wherein a pressure detection sensor is provided between the electrolytic cell and the third electric ball valve;

[0011] The other end of the first electric ball valve is also connected to one end of the plunger pump, the other end of the plunger pump is connected to one end of the fourth electric ball valve, and the other end of the fourth electric ball valve is connected to the electrolytic cell.

[0012] Preferably, the other end of the first electric ball valve is also connected to one end of a fifth electric ball valve, and the other end of the fifth electric ball valve is connected to the electrolytic cell;

[0013] The other end of the centrifugal pump is also connected to one end of a sixth electric ball valve, and the other end of the sixth electric ball valve is connected to a water tank.

[0014] Preferably, a first check valve is provided between the fourth electric ball valve and the electrolytic cell.

[0015] Preferably, a second check valve is provided between the sixth electric ball valve and the water tank.

[0016] Preferably, a liquid level gauge is provided on the water tank.

[0017] Preferably, each structure is connected with a pipeline.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model proposes a novel electrolytic cell air tightness detection device, which realizes the connection between the water tank and the electrolytic cell by setting up multiple transport pipelines, and sets multiple electric ball valves, plunger pumps, centrifugal pumps and other structural components on the transport pipeline to complete the three links of water injection, pressure maintenance and water return, and monitors the pressure change of the electrolytic cell in real time through the pressure detection sensor, which can accurately judge the leakage of the electrolytic cell, and provide a strong guarantee for the safe operation of the electrolytic cell; the utility model adopts the water injection and pressure maintenance method to test the electrolytic cell, which is simple and fast to operate, and can efficiently complete the leakage detection of the electrolytic cell. The utility model realizes the close connection and efficient operation of the three links of water injection, pressure maintenance and water return through the precise coordination between multiple electric ball valves, multiple transport pipelines, plunger pumps and centrifugal pumps, thereby ensuring the rapid and convenient leakage detection of the electrolytic cell. This design not only improves the work efficiency, but also enhances the convenience of operation, which brings a more obvious improvement to the leakage detection work of the electrolytic cell. The utility model electrolytic cell air tightness detection device can improve the production efficiency and safety of water electrolysis technology, reduce production costs and risks, and thus indirectly promote the healthy development of the hydrogen energy industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structural connection of the utility model;

[0021] Figure 2 It is a schematic diagram of the structural connection of the water injection stage of the utility model;

[0022] Figure 3 It is a schematic diagram of the structural connection of the utility model in the pressure-maintaining stage;

[0023] Figure 4 It is a schematic diagram of the structural connection of the water return stage of the utility model;

[0024] Among them, 1-water tank, 11-liquid level gauge;

[0025] 2-Electrolyzer;

[0026] 31-first electric ball valve, 32-second electric ball valve, 33-third electric ball valve, 34-fourth electric ball valve, 35-fifth electric ball valve, 36-sixth electric ball valve;

[0027] 41- centrifugal pump, 42- plunger pump;

[0028] 51-first check valve, 52-second check valve;

[0029] 6-Pressure detection sensor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Combination Figures 1 to 4 As shown, the utility model proposes a novel electrolytic cell air tightness detection device, which can simply, quickly and efficiently complete the electrolytic cell leakage detection. The detection device mainly includes a water tank 1 containing a water source, an electrolytic cell 2 to be detected, and a pipeline for connecting component structures.

[0033] Combination Figure 1 and Figure 2As shown, the water tank 1 is connected to one end of the first electric ball valve 31, the other end of the first electric ball valve 31 is connected to one end of the centrifugal pump 41, the other end of the centrifugal pump 41 is connected to one end of the second electric ball valve 32, and the other end of the second electric ball valve 32 is connected to the electrolyzer 2. The electrolyzer 2 is connected to one end of the third electric ball valve 33, and the other end of the third electric ball valve 33 is connected to the water tank 1, wherein a pressure detection sensor 6 is provided between the electrolyzer 2 and the third electric ball valve 33. The pressure detection sensor 6 can monitor the pressure change of the electrolyzer 2 in real time, and accurately judge the leakage of the electrolyzer 2 by monitoring the pressure change in real time, thereby improving the production safety of the electrolysis water hydrogen production technology. Among them, a liquid level gauge 11 for observing the liquid level in the tank is provided on the water tank 1. In the water filling stage, the water in the water tank 1 is powered by the centrifugal pump 41 and enters the electrolyzer 2 through the first electric ball valve 31 and the second electric ball valve 32.

[0034] Combination Figure 1 and Figure 3 As shown, the other end of the first electric ball valve 31 is also connected to one end of the plunger pump 42, the other end of the plunger pump 42 is connected to one end of the fourth electric ball valve 34, and the other end of the fourth electric ball valve 34 is connected to the electrolytic cell 2. Figure 1 As shown, a first check valve 51 is provided between the fourth electric ball valve 34 and the electrolytic cell 2, which can be used to ensure unidirectional flow of water source on the pipeline, prevent reverse flow, and ensure smooth detection. In the pressure holding stage, the plunger pump 42 is used to adjust the pressure to the target setting value, close the first electric ball valve 31, the fourth electric ball valve 34 and the plunger pump 42, and observe and record the reading of the pressure detection sensor 6 after stabilization. If there is a leak in the electrolytic cell 2, the pressure reading will gradually decrease. On the contrary, if the pressure reading remains stable, the electrolytic cell 2 has good sealing performance.

[0035] Combination Figure 1 and Figure 4 As shown, the other end of the first electric ball valve 31 is also connected to one end of the fifth electric ball valve 35, and the other end of the fifth electric ball valve 35 is connected to the electrolytic cell 2. The other end of the centrifugal pump 41 is also connected to one end of the sixth electric ball valve 36, and the other end of the sixth electric ball valve 36 is connected to the water tank 1. Figure 1 As shown, a second check valve 52 is provided between the sixth electric ball valve 36 and the water tank 1, which can be used to ensure the one-way flow of water in the pipeline, prevent reverse flow, and ensure the smooth progress of the test. In the water return stage after the test, the water in the electrolytic cell 2 flows back to the water tank 1 through the fifth electric ball valve 35, the centrifugal pump 41 and the sixth electric ball valve 36 under the action of the centrifugal pump 41.

[0036] Combination Figures 1 to 4 As shown, the above structures are connected by pipelines. In order to facilitate the understanding of the air tightness detection process of the electrolytic cell 2 and the direction of water flow, the following is combined with Figures 1 to 4The pipeline is described in detail.

[0037] The pipeline mainly includes a main transport pipeline, a water injection pipeline, a pressure-maintaining pipeline and a return pipeline. Among them, the main transport pipeline includes a first transport branch A1, a second transport branch A2 and a third transport branch A3. The water injection pipeline includes a first water injection pipeline B1 and a second transport pipeline B2. The pressure-maintaining pipeline includes a first pressure-maintaining pipeline C1; the return pipeline includes a first return pipeline D1 and a second return pipeline D2.

[0038] The leakage detection process of the utility model electrolytic cell air tightness detection device mainly includes the following three stages:

[0039] Water injection stage:

[0040] Combination Figure 2 As shown, the first electric ball valve 31, the second electric ball valve 32, and the third electric ball valve 33 are opened, the centrifugal pump 41 is opened, and other valves are closed. Driven by the centrifugal pump 41, the water in the water tank 1 is sequentially delivered to the electrolytic cell 2 through the first transport branch A1, the first water injection pipeline B1, the second water injection pipeline B2, the third water injection pipeline B3, and the second transport branch A2, and the air in the electrolytic cell 2 is discharged through the third transport branch A3. When the liquid level gauge 11 in the water tank 1 is observed and the liquid level is constant, the second electric ball valve 32, the third electric ball valve 33 and the centrifugal pump 41 are closed.

[0041] Pressure holding stage:

[0042] Combination Figure 3 As shown, keep the first electric ball valve 31 open, open the fourth electric ball valve 34 and the plunger pump 42, and keep the other valves closed. Driven by the plunger pump 42, the water in the electrolytic cell 2 is transported to the electrolytic cell 2 through the first transport branch A1, the first water injection pipeline B1, the first pressure-maintaining pipeline C1, and the second transport branch A2 in sequence. When the pressure reading of the pressure detection sensor 6 reaches the set value, close the first electric ball valve 31, the fourth electric ball valve 34 and the plunger pump 42, and then observe the reading of the pressure detection sensor 6. If there is a leak in the electrolytic cell 2, the pressure will gradually decrease; on the contrary, if the pressure remains stable, it means that the electrolytic cell 2 has good sealing. By analyzing the pressure change data, the leakage of the electrolytic cell 2 can be accurately judged.

[0043] Backwater stage:

[0044] Combination Figure 4 As shown, the third electric ball valve 33, the fifth electric ball valve 35, the sixth electric ball valve 36 and the centrifugal pump 41 are opened, and the water in the electrolytic cell 2 is driven by the centrifugal pump 41 and transported back to the water tank 1 through the second transport branch A2, the first return water pipeline D1, the second water injection pipeline B2, the second return water pipeline D2, and the first transport branch A1 in sequence.

[0045] Combination Figures 1 to 4 As shown, the utility model proposes a novel electrolytic cell air tightness detection device, which realizes the connection between the water tank 1 and the electrolytic cell 2 by setting a plurality of transport pipelines, and sets a plurality of electric ball valves, plunger pumps 42 and centrifugal pumps 41 and other structural components on the transport pipeline to complete the three links of water injection, pressure maintenance and water return, and reacts the liquid level in the water tank 1 through the liquid level meter 11 and monitors the pressure change of the electrolytic cell in real time through the pressure detection sensor 6, which can accurately judge the leakage of the electrolytic cell 2, and provide a strong guarantee for the safe operation of the electrolytic cell 2. The utility model adopts the water injection and pressure maintenance method to test the electrolytic cell 2, which is simple and fast to operate, and can efficiently complete the leakage detection of the electrolytic cell 2. The utility model realizes the close connection and efficient operation of the three links of water injection, pressure maintenance and water return through the precise coordination between a plurality of electric ball valves, a plurality of transport pipelines, a plunger pump 42 and a centrifugal pump 41, thereby ensuring the rapid and convenient leakage detection of the electrolytic cell 2. This design not only improves work efficiency, but also enhances the convenience of operation, bringing a more obvious improvement to the leak detection work of the electrolyzer 2. The utility model electrolyzer air tightness detection device can improve the production efficiency and safety of water electrolysis technology, reduce production costs and risks, and thus indirectly promote the healthy development of the hydrogen energy industry.

[0046] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. A novel electrolytic cell air tightness detection device, characterized in that: Including water tank and electrolyzer; The water tank contains water used for testing; The water tank is connected to one end of the first electric ball valve, the other end of the first electric ball valve is connected to one end of the centrifugal pump, the other end of the centrifugal pump is connected to one end of the second electric ball valve, and the other end of the second electric ball valve is connected to the electrolytic cell; The electrolytic cell is connected to one end of the third electric ball valve, and the other end of the third electric ball valve is connected to the water tank, wherein a pressure detection sensor is provided between the electrolytic cell and the third electric ball valve; The other end of the first electric ball valve is also connected to one end of the plunger pump, the other end of the plunger pump is connected to one end of the fourth electric ball valve, and the other end of the fourth electric ball valve is connected to the electrolytic cell.

2. A novel electrolytic cell air tightness detection device according to claim 1, characterized in that: The other end of the first electric ball valve is also connected to one end of the fifth electric ball valve, and the other end of the fifth electric ball valve is connected to the electrolytic cell; The other end of the centrifugal pump is also connected to one end of a sixth electric ball valve, and the other end of the sixth electric ball valve is connected to a water tank.

3. A novel electrolytic cell air tightness detection device according to claim 1, characterized in that: A first check valve is arranged between the fourth electric ball valve and the electrolytic cell.

4. A novel electrolytic cell air tightness detection device according to claim 2, characterized in that: A second check valve is arranged between the sixth electric ball valve and the water tank.

5. A novel electrolytic cell air tightness detection device according to claim 1, characterized in that: The water tank is provided with a liquid level meter.

6. A novel electrolytic cell air tightness detection device according to claim 1, characterized in that: All structures are connected by pipelines.

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