Testing device for PEM water electrolysis hydrogen production

Abstract

The utility model discloses a test device for PEM electrolyzed water hydrogen production, which comprises a pure water tank, a constant temperature water storage tank, an electrolytic bath, a drying mechanism and a cooling mechanism, the bottom of the pure water tank is provided with a first liquid guide pipeline communicated with the constant temperature water storage tank, and the bottom of the constant temperature water storage tank is provided with a second liquid guide pipeline communicated with the electrolytic bath. A gas storage chamber is arranged in the electrolytic tank, a baffle is mounted between the electrolytic tank and the gas storage chamber, and a vent hole is formed in the top of the baffle; the baffle and the gas storage chamber are arranged in the electrolytic tank, hydrogen generated by the electrolytic tank is guided into the gas storage chamber from the vent hole, so that the hydrogen is guided into the drying box for drying by utilizing the gas guide pipeline, and a hydrogen circulation path is prolonged under the cooperation of the guide plates which are arranged in the drying box in a staggered manner; and heating rods and drying nets are uniformly arranged on the path, so that the passing hydrogen is comprehensively dried.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology through water electrolysis, specifically to a testing device for hydrogen production through PEM water electrolysis. Background Technology

[0002] Energy shortage and environmental pollution have become two major global challenges restricting human economic development and social progress. The international community has reached a consensus on transforming the energy consumption structure as soon as possible and achieving sustainable energy development. Hydrogen energy is one of the most ideal energy sources for mankind. my country has regarded hydrogen energy as a strategic resource technology. Hydrogen energy has the characteristics of abundant resources, renewability, storability, cleanliness and environmental protection. Its research is receiving more and more attention. However, in the process of producing hydrogen by electrolysis of water, it is necessary to dry and cool the gas to ensure that the gas in the liquid is completely discharged before it can be tested and used.

[0003] Authorization announcement number CN217600855U discloses a testing device for hydrogen production via PEM electrolysis of water. This device primarily utilizes temperature sensors 1, 2, and 3 to accurately control and monitor water temperature, while also compensating for temperature control deviations in the first two stages. Through the use of an electrolytic cell, gas-water separator 1, and gas-water separator 2, it completes the hydrogen production process via water electrolysis and recovers oxygen and hydrogen, thus improving the temperature control and hydrogen production efficiency of this invention. However, in actual use, the device still has the following drawbacks:

[0004] The aforementioned patent mainly achieves the effect of producing hydrogen through water electrolysis by temperature control detection. However, during the test of hydrogen production through water electrolysis, the prepared hydrogen needs to be dried and cooled. In the existing method of drying hydrogen, the hydrogen flow rate is relatively fast when it passes through the drying chamber, which leads to incomplete drying of the rapidly flowing hydrogen and difficulty in fully separating the gas and liquid, thus reducing the efficiency of the device in collecting and testing hydrogen. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for hydrogen production via PEM electrolysis of water, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PEM electrolysis water hydrogen production testing device, comprising a pure water tank, a constant temperature water storage tank, an electrolytic cell, a drying mechanism, and a cooling mechanism. The bottom of the pure water tank is provided with a first liquid guiding pipe communicating with the constant temperature water storage tank. The bottom of the constant temperature water storage tank is provided with a second liquid guiding pipe communicating with the electrolytic cell. The electrolytic cell is provided with a gas storage chamber inside. A baffle is installed between the electrolytic cell and the gas storage chamber. A vent is provided at the top of the baffle. A gas pump communicating with the gas storage chamber is provided at the bottom of one side of the electrolytic cell. A gas guiding pipe is connected to one side of the gas pump, and the gas guiding pipe is connected with the drying chamber.

[0007] Preferably, the drying mechanism includes a drying chamber, a rotating rod is fitted on one side of the top inside the drying chamber, an impeller is provided on the top of the outer side of the rotating rod, the outer side of the rotating rod extends into the interior of the air storage chamber and is provided with a water absorption mesh plate, multiple sets of guide plates are staggered inside the drying chamber, and the multiple sets of guide plates form an air guiding channel, multiple sets of heating rods are provided at one end inside the drying chamber, and the heating rods are arranged between the channels, a drying mesh is provided between the multiple sets of guide plates, and an air guiding pipe is connected to one side of the bottom of the drying chamber, and the air guiding pipe is connected to the cooling mechanism.

[0008] Preferably, the cooling mechanism includes a cooling box, with a coiled tube at the middle position inside the cooling box, and a cooling circulation box at one end of the cooling box. The coiled tube includes an inlet pipe and an outlet pipe, and both the outlet pipe and the inlet pipe are connected to the cooling circulation box.

[0009] Preferably, the gas guide pipe is connected to one side of one end of the drying chamber, and the tail end of the gas guide pipe is opposite to the outer horizontal plane of the impeller. Through the relative cooperation between the gas guide pipe and the impeller, the impeller rotates to guide the hydrogen flow and improve the drying efficiency of the hydrogen in the drying chamber.

[0010] Preferably, an opening is provided on one side of the interior of the drying oven, and the opening is connected to the air guide pipe. The air guide pipe is equipped with a flow regulating valve to facilitate control of the gas flow rate.

[0011] Preferably, the rotating rod and the water-absorbing mesh plate rotate inside the gas storage chamber. The gas storage chamber is connected to the drying box through an air pump and an air guide pipe. The hydrogen in the gas storage chamber is thoroughly dried by the centrifugal rotation of the water-absorbing mesh plate.

[0012] Preferably, the drying mesh is horizontally opposite to the heating rod, and the heating rod and drying mesh are arranged in the channel between multiple sets of guide plates. The hydrogen channel formed by the multiple sets of guide plates facilitates the uniform drying of the flowing hydrogen by setting the heating rod and drying mesh along the path of the channel.

[0013] Preferably, the cooling box is equipped with two sets of filter screens inside, and the filter screens are arranged on both sides of the surrounding tube to facilitate the filtration and cooling of hydrogen and promote more uniform cooling of hydrogen.

[0014] The present invention provides a testing device for hydrogen production via PEM electrolysis of water, which has at least the following beneficial effects:

[0015] 1. By setting baffles and a gas storage chamber inside the electrolytic cell, hydrogen generated by the electrolytic cell is introduced into the gas storage chamber through the gas inlet. The hydrogen is then guided into the drying chamber through a gas guide pipe for drying. The staggered guide plate structure inside the drying chamber extends the hydrogen flow path, and heating rods and drying nets are evenly arranged along the path to thoroughly dry the passing hydrogen. This promotes gas-liquid separation of hydrogen and finally guides it into the cooling box through the gas guide pipe for gas cooling. This ensures complete gas-liquid separation in the electrolytic hydrogen production and improves the efficiency of hydrogen collection and testing.

[0016] 2. By setting a rotating adsorption structure with a rotating rod and a water-absorbing mesh plate inside the gas storage chamber, it is convenient to blow hydrogen gas discharged into the drying box through the gas guide pipe onto the impeller. The gas flow and wind power drive the impeller and rotating rod to rotate synchronously. This not only allows the gas to be evenly introduced into the flow channel inside the drying box for comprehensive drying, but also uses the rotation of the water-absorbing mesh plate to pre-adsorb the liquid contained in the hydrogen produced by electrolysis, improving the hydrogen gas-liquid separation rate and increasing the efficiency of subsequent drying and cooling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydrogen production device of this utility model;

[0018] Figure 2 This is a front view of the electrolytic cell of this utility model;

[0019] Figure 3 This is a top sectional view of the drying oven of this utility model;

[0020] Figure 4 This is a side view of the circumferential tube of this utility model.

[0021] In the diagram: 1. Pure water tank; 2. First liquid guiding pipeline; 3. Constant temperature water storage tank; 4. Second liquid guiding pipeline; 5. Electrolytic cell; 6. Baffle; 7. Gas storage chamber; 8. Vent; 9. Impeller; 10. Drying box; 11. Baffle plate; 12. Water absorption mesh plate; 13. Rotating rod; 14. Air guiding pipe; 15. Cooling box; 16. Circulating pipe; 17. Water inlet pipe; 18. Air guiding pipeline; 19. Air pump; 20. Cooling circulation box; 21. Heating rod; 22. Drying mesh. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4The present invention provides an embodiment of a PEM electrolysis water hydrogen production testing device, comprising a pure water tank 1, a constant temperature water storage tank 3, an electrolytic cell 5, a drying mechanism, and a cooling mechanism. The bottom of the pure water tank 1 is provided with a first liquid guiding pipe 2 communicating with the constant temperature water storage tank 3. The bottom of the constant temperature water storage tank 3 is provided with a second liquid guiding pipe 4 communicating with the electrolytic cell 5. The electrolytic cell 5 has a gas storage chamber 7 inside, and a baffle 6 is installed between the electrolytic cell 5 and the gas storage chamber 7. The top of the baffle 6 has an opening for... Gas inlet 8, bottom of one side of electrolytic cell 5 is provided with gas pump 19 which is connected to gas storage chamber 7. Gas pump 19 is connected to gas guide pipe 18 on one side and gas guide pipe 18 is connected to drying box 10. Gas guide pipe 18 is connected to one side of drying box 10. The tail end of gas guide pipe 18 is opposite to the outer horizontal plane of impeller 9. Through the relative cooperation of gas guide pipe 18 and impeller 9, impeller rotation is promoted to guide hydrogen flow and improve the drying efficiency of hydrogen in drying box 10.

[0024] The drying mechanism includes a drying chamber 10. A rotating rod 13 is fitted on one side of the top inside the drying chamber 10. An impeller 9 is provided on the top of the outer side of the rotating rod 13. The outer side of the rotating rod 13 extends into the interior of the air storage chamber 7 and is provided with a water absorption mesh plate 12. Multiple sets of guide plates 11 are arranged alternately inside the drying chamber 10, and the multiple sets of guide plates 11 form an air guiding channel. Multiple sets of heating rods 21 are provided at one end inside the drying chamber 10, and the heating rods 21 are arranged between the channels. A drying mesh 22 is provided between the multiple sets of guide plates 11. A gas guiding pipe 14 is connected to one side of the bottom of the drying chamber 10, and the gas guiding pipe 14 is connected to the cooling mechanism. An opening is opened on one side inside the drying chamber 10, and the opening is connected to the gas guiding pipe 14. A flow regulating valve is provided on the gas guiding pipe 14 to facilitate control of the gas flow rate.

[0025] The rotating rod 13 and the water-absorbing mesh plate 12 rotate inside the gas storage chamber 7. The gas storage chamber 7 is connected to the drying box 10 through the air pump 19 and the air guide pipe 18. The hydrogen in the gas storage chamber 7 is thoroughly dried by the centrifugal rotation of the water-absorbing mesh plate.

[0026] The drying mesh 22 is horizontally opposite to the heating rod 21. The heating rod 21 and the drying mesh 22 are set in the channel between multiple sets of guide plates 11. The hydrogen channel formed by multiple sets of guide plates 11 facilitates the uniform drying of the flowing hydrogen by setting the heating rod 21 and the drying mesh 22 along the path of the channel.

[0027] Example 1, as Figure 1-4As shown, the cooling mechanism includes a cooling box 15, with a coiled tube 16 in the middle of the interior of the cooling box 15. A cooling circulation box 20 is provided at one end of the cooling box 15. The coiled tube 16 includes an inlet pipe 17 and an outlet pipe, and both the outlet pipe and the inlet pipe 17 are connected to the cooling circulation box 20. When the hydrogen produced by electrolysis of water is dried, the hydrogen is introduced into the cooling box 15. Through the circulation of the cooling circulation box 20 and the inlet pipe 17, the cooling water is circulated in the coiled tube 16, so that the hydrogen can flow out from the gaps in the coiled tube 16, thereby making the cooling of the hydrogen more uniform and comprehensive. After the hydrogen is cooled, it is collected for easy collection and testing.

[0028] Working principle: This is used in a PEM water electrolysis hydrogen production test device;

[0029] The connection between the pure water tank 1 and the first liquid guiding pipe 2 and the constant temperature water storage tank 3 facilitates the placement of pure water into the constant temperature water storage tank 3 for temperature control. Once the water reaches the specified electrolysis temperature, it is introduced into the electrolysis cell 5 through the second liquid guiding pipe 4 for hydrogen electrolysis. During electrolysis, the generated hydrogen gas is introduced into the gas storage chamber 7 through the vent 8 for storage. Then, the hydrogen gas is drawn into the gas guiding pipe 18 and introduced into the drying chamber 10 by the start of the air pump 19. This allows the airflow of the hydrogen gas to contact the impeller 9, causing the impeller 9 to guide and rotate under the influence of the airflow. This causes the impeller 9 to synchronously drive the rotating rod 13 and the water suction plate 12 to rotate, thereby allowing the water suction plate 12 to adsorb liquid from the hydrogen gas, improving the gas-liquid separation efficiency of the hydrogen. To obtain dry and pure hydrogen from the hydrogen produced by water electrolysis through gas-liquid separation and hydrogen purification devices, the system performs real-time drying and cooling of hydrogen production, as well as pressure acquisition and control. Multiple sets of staggered guide plates 11 form hydrogen flow channels, with heating rods 21 and drying nets 22 installed within these channels to thoroughly dry the passing hydrogen. After uniform drying, the hydrogen is introduced into a cooling box 15 through a gas pipe 14 for cooling, achieving comprehensive gas-liquid separation and cooling. After cooling, the hydrogen is collected and tested by an integrated control technology for multiple physical quantities such as flow rate, pressure, and temperature, improving the hydrogen production yield and efficiency of the device.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A testing device for hydrogen production via PEM electrolysis of water, characterized in that: The system includes a pure water tank (1), a constant temperature water storage tank (3), an electrolytic cell (5), a drying mechanism, and a cooling mechanism. The bottom of the pure water tank (1) is provided with a first liquid guiding pipe (2) that is connected to the constant temperature water storage tank (3). The bottom of the constant temperature water storage tank (3) is provided with a second liquid guiding pipe (4) that is connected to the electrolytic cell (5). The electrolytic cell (5) is provided with a gas storage chamber (7). A baffle (6) is installed between the electrolytic cell (5) and the gas storage chamber (7). A vent (8) is opened on the top of the baffle (6). A gas pump (19) is provided at the bottom of one side of the electrolytic cell (5) that is connected to the gas storage chamber (7). A gas guiding pipe (18) is connected to one side of the gas pump (19), and the gas guiding pipe (18) is connected to the drying box (10).

2. The testing device for PEM electrolysis of water to produce hydrogen according to claim 1, characterized in that: The drying mechanism includes a drying chamber (10). A rotating rod (13) is fitted on one side of the top inside the drying chamber (10). An impeller (9) is provided on the top of the outer side of the rotating rod (13). The outer side of the rotating rod (13) extends into the interior of the air storage chamber (7) and is provided with a water absorption mesh plate (12). Multiple sets of guide plates (11) are arranged alternately inside the drying chamber (10), and the multiple sets of guide plates (11) form an air guiding channel. Multiple sets of heating rods (21) are provided at one end inside the drying chamber (10), and the heating rods (21) are arranged between the channels. A drying mesh (22) is provided between the multiple sets of guide plates (11). An air guiding pipe (14) is connected to one side of the bottom of the drying chamber (10), and the air guiding pipe (14) is connected to the cooling mechanism.

3. The testing device for PEM electrolysis of water to produce hydrogen according to claim 1, characterized in that: The cooling mechanism includes a cooling box (15), with a coiled tube (16) in the middle of the interior of the cooling box (15). A cooling circulation box (20) is provided at one end of the cooling box (15). The coiled tube (16) includes an inlet pipe (17) and an outlet pipe, and both the outlet pipe and the inlet pipe (17) are connected to the cooling circulation box (20).

4. The testing device for PEM electrolysis of water to produce hydrogen according to claim 1, characterized in that: The air guide pipe (18) is connected to one side of the drying box (10), and the tail end of the air guide pipe (18) is opposite to the outer horizontal plane of the impeller (9).

5. The testing device for PEM electrolysis of water to produce hydrogen according to claim 2, characterized in that: The drying oven (10) has an opening on one side, which is connected to the air guide pipe (14). The air guide pipe (14) is equipped with a flow regulating valve.

6. The testing apparatus for PEM electrolysis of water to produce hydrogen according to claim 2, characterized in that: The rotating rod (13) and the water-absorbing mesh plate (12) rotate inside the air storage chamber (7), which is connected to the drying box (10) through the air pump (19) and the air guide pipe (18).

7. The testing apparatus for PEM electrolysis of water to produce hydrogen according to claim 2, characterized in that: The drying mesh (22) is opposite to the horizontal plane of the heating rod (21), and the heating rod (21) and the drying mesh (22) are arranged in the channel between multiple sets of guide plates (11).

8. The testing apparatus for PEM electrolysis of water to produce hydrogen according to claim 3, characterized in that: The cooling box (15) is equipped with two sets of filters inside, and the filters are located on both sides of the surrounding tube (16).

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