Electrolytic bath leakage detection device and hydrogen production equipment

Abstract

The embodiment discloses an electrolytic bath leakage detection device and hydrogen production equipment, the detection device comprises a supporting seat and a detection assembly, the surface, used for supporting an electrolytic bath, of the supporting seat is provided with a containing cavity, a plurality of arc-shaped protruding strips are distributed in the containing cavity at intervals, and a collecting groove is defined between every two adjacent protruding strips; the detection assembly comprises a fixing strip and a liquid detection part, the fixing strip is arranged above the collecting tank in a crossing mode, the two ends of the fixing strip are connected with the inner wall of the supporting base, the liquid detection part is installed on the surface, facing the collecting tank, of the fixing strip, and the liquid detection part is electrically connected with a system for controlling water electrolysis. The liquid detection part is arranged above the collecting tank, so that after the liquid level of liquid in the collecting tank rises to the position detected by the liquid detection part, the liquid detection part detects a signal and transmits the signal to the system, and the system sends out an alarm signal to remind a worker that the electrolytic tank leaks liquid; therefore, the leaked liquid of the electrolytic bath can be treated in time, and unnecessary loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production, in particular to a liquid leakage detection device for an electrolytic cell and a hydrogen production device. Background Art

[0002] Hydrogen is widely used in the industrial fields such as petroleum refining, chemical synthesis, and metal refining. In recent years, the possibility of utilization in hydrogen refueling stations for fuel cell vehicles, smart communities, hydrogen power plants, etc. has also been expanding. Therefore, there are high expectations for the research and development of technologies for obtaining hydrogen with particularly high purity from renewable energy. As methods for electrolyzing water, there are solid polymer type water electrolysis methods, high-temperature water vapor electrolysis methods, alkaline water electrolysis methods, etc. In this regard, an electrolytic cell is generally required in the process of hydrogen production.

[0003] At present, when the electrolytic cell is actually in use, there is a situation that affects the overall operation, that is, liquid leakage occurs. Often, due to the looseness of the installation or the strong impact caused by the entry of the electrolyte, the offset between the bipolar plates will occur, and at this time, the electrolyte will leak. If it cannot be detected in time, certain losses will be caused, and even unpredictable consequences will be caused. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a liquid leakage detection device for an electrolytic cell and a hydrogen production device.

[0005] In a first aspect, an embodiment of the present application provides a liquid leakage detection device for an electrolytic cell, including:

[0006] A support base, which is used to support the surface of the electrolytic cell and is provided with a storage cavity. A plurality of arc-shaped convex strips are distributed at intervals in the storage cavity, and a collection groove for collecting liquid is defined between adjacent convex strips;

[0007] A detection component, which includes a fixing strip and a liquid detection piece for detecting liquid. The fixing strip is horizontally arranged above the collection groove, and both ends of the fixing strip are connected to the inner wall of the support base. The liquid detection piece is installed on the surface of the fixing strip facing the collection groove, and the liquid detection piece is electrically connected to the system for controlling electrolyzed water.

[0008] In an embodiment, a diversion channel is formed in the middle of the convex strip along its width, and the diversion channel is communicated with the collection groove.

[0009] In an embodiment, the width of the diversion channel gradually decreases from the middle to both sides.

[0010] In an embodiment, the surface of the collection groove gradually inclines from both sides to the middle, and the liquid detection piece is located above the middle of the collection groove.

[0011] In one embodiment, a connecting post is provided at the top of the liquid detection member, a connecting hole is formed in the fixing strip, and one end of the connecting post away from the liquid detection member is connected to the connecting hole.

[0012] In one embodiment, the width of the storage cavity is between 0.5 m and 2.5 m.

[0013] In one embodiment, two baffles are further included and are obliquely arranged on both sides of the liquid detection member. One end of the baffle is connected to the outer side surface of the fixing strip, the other end of the baffle extends towards the storage cavity, and the liquid detection member is located in the area surrounded by the two baffles.

[0014] In one embodiment, the inclination angle of the baffle is between 15° and 30°.

[0015] In a second aspect, an embodiment of the present application provides a hydrogen production device, including an electrolytic cell and the electrolytic cell leakage detection device of the first aspect. The electrolytic cell is installed on the support seat of the electrolytic cell leakage detection device.

[0016] Compared with the prior art, the above technical solution provided by the embodiment of the present application has the following beneficial effects:

[0017] A storage cavity is arranged on the surface of the support seat for installing the electrolytic cell, and a plurality of arc-shaped convex strips are arranged in the storage cavity, so that a collection groove for collecting liquid is formed between the adjacent convex strips. When the liquid leaked from the electrolytic cell drips onto the surface of the convex strip, the liquid will flow along the surface of the convex strip and converge into the collection groove. When the liquid level rises to contact the liquid detection member, the liquid detection member detects a signal and transmits it to the system, so that the system issues an alarm signal to remind the staff that the electrolytic cell has a leakage situation, so that the leakage of the electrolytic cell can be processed in time to avoid unnecessary losses. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an electrolytic cell and an electrolytic cell leakage detection device in a hydrogen production device of the present application;

[0019] Figure 2 is a schematic structural diagram of an electrolytic cell leakage detection device of the present application;

[0020] Figure 3 is a schematic cross-sectional structural diagram of an electrolytic cell leakage detection device of the present application.

[0021] Reference numerals in the drawings:

[0022] 10. Electrolyzer leakage detection device; 11. Support base, 11a. Storage cavity; 12. Rib; 13. Collection tank; 14. Detection component; 141. Fixed strip; 142. Liquid detection piece; 15. Baffle; 16. Diversion channel; 17. Connecting column; a. Tilt angle; 20. Electrolyzer. Detailed implementation manners

[0023] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. This is only for the convenience of describing the technical solution, rather than indicating that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0024] The following will further describe in detail the detailed implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0025] In the related art, generally, the electrolyzers in current hydrogen production equipment are formed by horizontally stacking and extending electrode frames. End plates are provided on both sides, and then the end plates are firmly fixed by screw nuts to achieve the fixed installation of the electrode frames. Pipes are fixedly installed above and below the end plates to achieve the entry or discharge of electrolytic solution and the discharge of hydrogen and oxygen. However, due to the looseness of the installation or the strong impact caused by the entry of electrolytic solution, the offset between the electrode frames often occurs, resulting in the leakage of electrolytic solution. If only relying on personnel patrol to observe the operation of the electrolyzer, it is easy to cause the abnormal situation to be discovered in a timely manner, resulting in certain losses and even unpredictable consequences. For this reason, the present application provides an electrolyzer leakage detection device and a hydrogen production equipment.

[0026] Please refer to Figure 1 , the hydrogen production equipment includes an electrolyzer 20 and an electrolyzer leakage detection device 10. The electrolyzer 20 is installed on the support base 11 of the electrolyzer leakage detection device 10. The electrolyzer leakage detection device 10 is used to detect the leakage of the electrolyzer, so as to be able to timely discover the leakage of the electrolyzer, so that the staff can make operations.

[0027] Please refer to Figure 2 and Figure 3, specifically, the electrolytic cell leakage detection device 10 includes a support base 11 and a detection component 14. The support base 11 is used to support the surface of the electrolytic cell and is provided with a receiving cavity 11a. A plurality of arc-shaped ridges 12 are spaced apart in the receiving cavity 11a. A collection groove 13 for collecting liquid is defined between adjacent ridges 12. The detection component 14 includes a fixing strip 141 and a liquid detection member 142 for detecting liquid. The fixing strip 141 is horizontally arranged above the collection groove 13, and both ends of the fixing strip 141 are connected to the inner wall of the support base 11. The liquid detection member 142 is installed on the surface of the fixing strip 141 facing the collection groove 13, and the liquid detection member 142 is electrically connected to the system for controlling electrolyzed water.

[0028] Exemplarily, the support base 11 can be made of a metal material to ensure that the manufactured support base 11 has sufficient strength to better provide a support force for the electrolytic cell. However, it also needs to have good corrosion resistance to avoid the corrosive liquid leaked from the electrolytic cell from corroding the support base 11, resulting in the inability to support the electrolytic cell.

[0029] Exemplarily, the ridges 12 are set to be arc-shaped so that when the liquid dripping from the electrolytic cell falls onto the surface of the ridges 12, the liquid can slide along the surface of the ridges 12 into the collection groove 13, enabling the collection groove 13 to quickly collect the liquid, so that the liquid level in the collection groove 13 rises to a height that can be detected by the liquid detection member 142.

[0030] Exemplarily, the liquid detection member 142 can be fixed to the fixing strip 141 by a detachable connection method or by an integral connection method, and this is not limited. However, it should be noted that after the liquid detection member 142 is fixed to the fixing strip 141, there is a certain distance between the liquid detection member 142 and the surface of the collection groove 13. Only when the liquid collected in the collection groove 13 reaches a certain height can the liquid detection member 142 detect a signal. The distance between the liquid detection member 142 and the surface of the collection groove 13 can be set according to the actual situation. For example: if it is necessary to detect the leakage of the electrolytic cell at the first time, the distance between the liquid detection member 142 and the surface of the collection groove 13 needs to be set within a small range value (such as 0.1 mm) so that the bottom surface of the liquid detection member 142 contacts the liquid in the collection groove 13 to detect a signal.

[0031] In addition, the liquid detection member 142 can be a commonly used detection component in the prior art, and this is not limited.

[0032] The electrolytic cell leakage detection device 10 based on the above technical features is provided with a storage cavity 11a on the surface of the support base 11 for installing the electrolytic cell, and a plurality of arc-shaped ridges 12 are arranged in the storage cavity 11a, so that a collection groove 13 for collecting liquid is formed between the adjacent ridges 12. When the liquid leaked from the electrolytic cell drips onto the surface of the ridge 12, the liquid will converge along the surface of the ridge 12 into the collection groove 13. After the liquid level rises to contact the liquid detection member 142, the liquid detection member 142 detects a signal and transmits it to the system, so that the system issues an alarm signal to remind the staff that the electrolytic cell has a leakage situation, so that the leakage of the electrolytic cell can be processed in time to avoid unnecessary losses.

[0033] In one embodiment, a diversion channel 16 is formed in the middle of the ridge 12 along its width, and the diversion channel 16 is communicated with the collection groove 13.

[0034] Exemplarily, since the liquid leaked from the electrolytic cell 20 will first drip onto the surface of the ridge 12, and the middle of the ridge 12 is lower than both sides, so that part of the liquid will flow into the diversion channel 16 and then be introduced into the collection groove 13 by the diversion channel. This is beneficial to accelerating the speed of the liquid flowing into the collection groove 13, enabling the liquid level of the liquid collected in the collection groove 13 to quickly rise to the height for detection by the liquid detection member 142, so that an alarm signal can be sent out in time for the staff to discover.

[0035] In one embodiment, the width of the diversion channel 16 gradually decreases from the middle to both sides. In this way, the speed of the liquid flowing into the collection groove 13 can be further increased, which is beneficial to accelerating the collection of the liquid in the collection groove 13 to the detection height.

[0036] In one embodiment, the surface of the collection groove 13 is gradually inclined from both sides to the middle, and the liquid detection member 142 is located above the middle of the collection groove 13. In this way, the middle of the collection groove 13 is at the lowest point, so that the liquid flowing into the collection groove 13 gradually converges to the middle of the collection groove 13, and the liquid level of the liquid collected in the collection groove 13 quickly rises to contact the liquid detection member 142, so that an alarm signal can be quickly sent out for the staff to discover.

[0037] In one embodiment, a connecting column 17 is provided at the top end of the liquid detection member 142, and a connecting hole is formed in the fixing strip 141, and one end of the connecting column 17 away from the liquid detection member 142 is connected to the connecting hole.

[0038] Exemplarily, by providing a connecting post 17 on the top of the liquid detection member 142 and then connecting one end of the connecting post 17 away from the liquid detection member 142 to the connecting hole, the liquid detection member 142 can be quickly installed on the fixing strip 141, with a simple structure and convenient operation. It should be noted that the connection mode between the connecting post 17 and the connecting hole can be snap connection or threaded connection, and no specific limitation is made.

[0039] In one embodiment, the width of the storage cavity 11a is between 0.5 m and 2.5 m. Based on setting the width of the storage cavity 11a within the above range, it is to be applicable to the widths and structures of most electrolytic cells, with a wider adaptability.

[0040] In one embodiment, it further includes two baffles 15 obliquely provided on both sides of the liquid detection member 142. One end of the baffle 15 is connected to the outer side surface of the fixing strip 141, and the other end of the baffle 15 extends towards the storage cavity 11a. The liquid detection member 142 is located within the area surrounded by the two baffles 15.

[0041] Exemplarily, when the liquid drips onto the surface of the convex strip 12, due to the action of gravity, the liquid will cause a certain degree of splashing, so that the splashed liquid falls onto the surface of the liquid detection member 142. Coupled with the fact that the liquid is corrosive, it is easy to cause corrosion of the liquid detection member 142, resulting in the liquid detection member 142 becoming ineffective and unable to be used. In this regard, in this embodiment, the baffles 15 provided on both sides of the liquid detection member 142 can block the dripping liquid and prevent the liquid from falling onto the surface of the liquid detection member 142, effectively preventing the liquid detection member 142 from being corroded and damaged.

[0042] In one embodiment, the inclination angle of the baffle 15 is between 15° and 30°. Thus, based on setting the inclination angle of the baffle 15 within the above range, it is to better block the liquid to avoid the liquid dripping onto the surface of the liquid detection member 142.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An electrolytic cell leakage detection device, characterized in that: include: A support seat, the surface of which is used to support the electrolytic cell, is provided with a receiving cavity, a plurality of arc-shaped convex strips are arranged at intervals in the receiving cavity, and a collecting groove for collecting liquid is defined between adjacent convex strips; The detection component includes a fixed bar and a liquid detection component for detecting liquid, wherein the fixed bar is arranged across the top of the collection tank, and the two ends of the fixed bar are connected to the inner wall of the support seat, the liquid detection component is installed on the surface of the fixed bar facing the collection tank, and the liquid detection component is electrically connected to the system for controlling electrolysis of water.

2. The electrolytic cell leakage detection device according to claim 1, characterized in that: A flow guide channel distributed along the width of the convex strip is formed in the middle of the convex strip, and the flow guide channel is connected with the collecting groove.

3. The electrolytic cell leakage detection device according to claim 2, characterized in that: The width of the flow guide channel gradually decreases from the middle to both sides.

4. The electrolytic cell leakage detection device according to claim 1, characterized in that: The surface of the collecting tank is gradually inclined from both sides to the middle, and the liquid detection component is located above the middle of the collecting tank.

5. The electrolytic cell leakage detection device according to claim 1, characterized in that: A connecting column is arranged at the top of the liquid detecting member, a connecting hole is arranged on the fixing bar, and one end of the connecting column away from the liquid detecting member is connected to the connecting hole.

6. The electrolytic cell leakage detection device according to claim 1, characterized in that: The width of the storage cavity is between 0.5m and 2.5m.

7. The electrolytic cell leakage detection device according to claim 1, characterized in that: It also includes two baffles obliquely arranged on both sides of the liquid detection component, one end of the baffle is connected to the outer side of the fixing strip, and the other end of the baffle extends toward the storage cavity, and the liquid detection component is located in the area surrounded by the two baffles.

8. The electrolytic cell leakage detection device according to claim 7, characterized in that: The inclination angle of the baffle is between 15° and 30°.

9. A hydrogen production device, characterized in that: The invention comprises an electrolytic cell and an electrolytic cell leakage detection device according to any one of claims 1 to 8, wherein the electrolytic cell is installed on a support base of the electrolytic cell leakage detection device.

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