Circulating water air cooling system and pure water SPE water electrolysis hydrogen production equipment

Abstract

The utility model relates to the technical field of water electrolysis hydrogen production, in particular to a circulating water air cooling system and pure water SPE water electrolysis hydrogen production equipment. The circulating water air cooling system is used for pure water SPE water electrolysis hydrogen production equipment and comprises a case and a fan unit, an electrolysis unit and a surface air cooler are arranged in the case, and the surface air cooler is communicated with the electrolysis unit; and the fan unit is used for introducing external airflow into the case, blowing the airflow towards the electrolysis unit and the surface air cooler, and leading the airflow flowing through the electrolysis unit and the surface air cooler out of the case. According to the circulating water air cooling system and the pure water SPE water electrolysis hydrogen production equipment, the cooling effect of circulating water can be improved, the structure is simple, use is convenient, the structural size is small, in-situ replacement can be conducted on the basis of existing equipment, and then the use and transformation cost of the circulating water air cooling system and the pure water SPE water electrolysis hydrogen production equipment can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of water electrolysis hydrogen production technology, specifically to a circulating water air-cooling system and a pure water SPE water electrolysis hydrogen production device. Background Technology

[0002] SPE water electrolysis hydrogen production equipment relies on an SPE electrolyzer. Pure water undergoes an electrolytic reaction to produce hydrogen and oxygen, which are then separated by a separator to obtain the desired gas. The purity of the gas produced by SPE electrolysis is related to temperature and water quality. To obtain high-purity gas and ensure stable operation of the equipment, it is necessary to improve the purity of the water and control the temperature of the circulating water. Currently, the circulating water is treated by a pure water machine and mixed-bed resin filtration. Because the resin operates at a relatively low temperature, generally around 60℃, the temperature of the circulating water generally does not exceed 60℃. Typically, the air temperature in summer is above 30℃, and the temperature difference between the circulating water and the air is no more than 30℃. This is smaller than the 50℃ temperature difference required by alkaline water electrolysis hydrogen production equipment, resulting in poor cooling effect for the circulating water.

[0003] Therefore, SPE water electrolysis hydrogen production equipment often uses an external chiller, adding chilled water pipelines inside the hydrogen generator to cool the circulating water pipelines with the produced chilled water. While water cooling can achieve the effect of cooling the circulating water, the use of a chiller increases the overall cost of the equipment and the floor space required. Furthermore, alkaline water electrolysis hydrogen production equipment mostly uses air cooling, and water cooling would be disadvantageous for in-situ equipment replacement. Utility Model Content

[0004] The purpose of this utility model is to provide a circulating water air-cooling system and a pure water SPE water electrolysis hydrogen production equipment, which can improve the cooling effect of circulating water, and its structure is simple, easy to use, and small in size. It can be replaced in situ based on existing equipment, thereby reducing its use and modification costs.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a circulating water air-cooling system for a pure water SPE water electrolysis hydrogen production equipment. The circulating water air-cooling system includes a chassis and a fan unit. The chassis houses an electrolysis unit and a surface cooler, and the surface cooler is connected to the electrolysis unit.

[0007] The fan unit is used to introduce external airflow into the chassis, blow it toward the electrolysis unit and the surface cooler, and then lead the airflow that flows through the electrolysis unit and the surface cooler out of the chassis.

[0008] In an optional embodiment, the electrolysis unit includes an electrolytic cell located below the surface cooler;

[0009] The chassis is equipped with an air inlet, which is located below the electrolytic cell.

[0010] In an optional implementation, the chassis is also equipped with an air outlet located above the electrolysis unit.

[0011] In an optional implementation, the center lines of the air inlet and the air outlet coincide.

[0012] In an optional implementation, the fan unit includes an axial fan connected to the chassis and located above the surface cooler;

[0013] Axial flow fans are used to guide airflow into the casing through the air inlet, and then out through the air outlet after passing through the electrolytic cell and surface cooler.

[0014] In an optional embodiment, the surface cooler includes a housing, a flow pipe, and a heat exchange fin assembly; the flow pipe and the heat exchange fin assembly are placed inside the housing, and the heat exchange fin assembly is connected to the flow pipe, which is used to supply circulating water.

[0015] The housing is equipped with a first air guide and a second air guide, which are distributed on the upper and lower sides of the housing. The first air guide is directly facing the axial flow fan, and the second air guide is directly facing the electrolytic cell.

[0016] In an optional implementation, the air inlet and outlet of the axial flow fan are connected to the first air guide and air outlet, respectively.

[0017] In an optional implementation, both the air inlet and the air outlet are equipped with filters.

[0018] In an optional implementation, both the air inlet and the air outlet are equipped with on / off valves.

[0019] Secondly, this utility model provides a pure water SPE water electrolysis hydrogen production equipment, which includes a circulating pump, a water purification filter, and a circulating water air cooling system as described in any of the foregoing embodiments.

[0020] The circulating pump and water purification filter are connected to the electrolysis unit and surface cooler through pipelines.

[0021] The beneficial effects of the circulating water air-cooling system and the pure water SPE water electrolysis hydrogen production equipment provided in this embodiment of the invention include:

[0022] This circulating water air-cooling system is used in a pure water SPE electrolysis hydrogen production equipment. The system includes a chassis and a fan unit. The chassis houses the electrolysis unit and a surface cooler, which are connected to the electrolysis unit. The fan unit draws external airflow into the chassis, directing it towards the electrolysis unit and surface cooler, and then exhausts the airflow outside the chassis. This circulating water air-cooling system and the pure water SPE electrolysis hydrogen production equipment improve the cooling effect of the circulating water. Furthermore, its simple structure, ease of use, and small size allow for in-situ replacement of existing equipment, thereby reducing operating and modification costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the circulating water air cooling system provided in this embodiment;

[0025] Figure 2 This is a schematic diagram of the surface cooler provided in this embodiment.

[0026] Icons: 100-Circulating water-cooled system; 110-Chassis; 120-Fan unit; 210-Electrolysis unit; 220-Surface cooler; 211-Electrolytic cell; 111-Air inlet; 112-Air outlet; 121-Axial flow fan; 221-Shell; 222-First air guide. Detailed Implementation

[0027] SPE water electrolysis hydrogen production equipment relies on SPE electrolyzer 211. Pure water undergoes an electrolytic reaction to generate hydrogen and oxygen, which are then separated by a separator to obtain the desired gas. The purity of the gas produced by SPE electrolyzer 211 is related to temperature and water quality. To obtain high-purity gas and ensure stable operation of the equipment, it is necessary to improve the purity of the water and control the temperature of the circulating water. Currently, the circulating water is treated by a pure water machine and mixed bed resin filtration. Because the resin operates at a relatively low temperature, generally around 60℃, the temperature of the circulating water generally does not exceed 60℃. In summer, the air temperature is usually above 30℃, and the temperature difference between the circulating water and the air is no more than 30℃. This is smaller than the 50℃ temperature difference required by alkaline water electrolysis hydrogen production equipment, resulting in poor cooling effect for the circulating water. Therefore, SPE water electrolysis hydrogen production equipment often uses an external chiller, adding chilled water pipelines inside the hydrogen generator to cool the circulating water pipelines with the produced chilled water. While water cooling with a chiller can achieve the effect of cooling the circulating water, the use of a chiller increases the overall cost of the equipment and the floor space required. Furthermore, alkaline water electrolysis hydrogen production equipment mostly uses air cooling, making water cooling less convenient for in-situ equipment replacement.

[0028] For the reasons mentioned above, this embodiment provides a circulating water air-cooling system 100 for a pure water SPE water electrolysis hydrogen production equipment. It can cool the circulating water based on the principle of air cooling. Moreover, it has a simple structure, is easy to use, and has a small size. It can be replaced in situ on the basis of existing equipment, thereby reducing its use and modification costs.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] Please refer to Figure 1 and Figure 2 This embodiment provides a circulating water air-cooled system 100 for a pure water SPE water electrolysis hydrogen production equipment. The circulating water air-cooled system 100 includes a chassis 110 and a fan unit 120. The chassis 110 houses an electrolysis unit 210 and a surface cooler 220, and the surface cooler 220 is connected to the electrolysis unit 210.

[0036] The fan unit 120 is used to introduce external airflow into the casing 110, blow it toward the electrolysis unit 210 and the surface cooler 220, and lead the airflow flowing through the electrolysis unit 210 and the surface cooler 220 out of the casing 110.

[0037] Please refer to Figure 1 and Figure 2 The working principle of the circulating water air-cooled system 100 is as follows:

[0038] Firstly, the circulating water air-cooling system 100 is used in the pure water SPE water electrolysis hydrogen production equipment. Its purpose is to improve the cooling effect of the circulating water, so as to facilitate the stable operation of the equipment and improve the gas production quality of the equipment.

[0039] Specifically, the circulating water air-cooled system 100 includes a chassis 110 and a fan unit 120; wherein, the chassis 110 houses an electrolysis unit 210 and a surface cooler 220, and the surface cooler 220 is connected to the electrolysis unit 210; that is, the chassis 110 contains some structural components of the relevant pure water SPE water electrolysis hydrogen production equipment, and during the operation of the electrolysis unit 210 and the surface cooler 220, there is circulating water flowing inside them, and during the operation, the electrolysis unit 210 also has a need for cooling;

[0040] Therefore, based on the above structure, the fan unit 120 introduces external airflow into the casing 110 and blows it toward the electrolysis unit 210 and the surface cooler 220, and then leads the airflow flowing through the electrolysis unit 210 and the surface cooler 220 out of the casing 110. In this way, the casing 110 and the fan unit 120 form a cooling path, allowing the external airflow to exchange heat with the electrolysis unit 210 and the surface cooler 220 after entering the casing 110, thereby cooling the structure and the circulating water inside. This improves the cooling effect of the circulating water. Moreover, its structure is simple and easy to use, with a small size, and can be replaced in situ on the basis of existing equipment, thereby reducing its use and modification costs.

[0041] Further, please refer to Figure 1 and Figure 2 In this embodiment, the electrolysis unit 210 includes an electrolytic cell 211 located below the surface cooler 220; the chassis 110 is equipped with an air inlet 111 located below the electrolytic cell 211. Therefore, when the circulating water cooling system 100 is operating, the airflow entering the chassis 110 can cool the electrolytic cell 211.

[0042] Furthermore, when exporting the airflow after heat exchange with the electrolytic cell 211 and the surface cooler 220, this embodiment adopts a method in which the chassis 110 is also equipped with an air outlet 112, and the air outlet 112 is located above the electrolytic unit 210, and the center lines of the air inlet 111 and the air outlet 112 coincide, so as to accelerate the heat exchange efficiency of the airflow.

[0043] Based on the above, it should be noted that when the chassis 110 is placed vertically, its air inlet 111 is located at the lower end of the chassis 110, while the air outlet 112 is located at the upper end of the chassis 110. Moreover, the center lines of the air inlet 111 and the air outlet 112 coincide, and along their center line direction, the fan unit 120, the surface cooler 220, and the electrolytic cell 211 inside the chassis 110 are arranged sequentially from top to bottom.

[0044] When configuring the fan unit 120, the fan unit 120 includes an axial flow fan 121, which is connected to the casing 110 and located above the surface cooler 220. The axial flow fan 121 guides airflow into the casing 110 through the air inlet 111, and exits through the air outlet 112 after passing through the electrolytic cell 211 and the surface cooler 220. It should be noted that when configuring the air outlet 112, the size of the air outlet 112 matches the size of the air duct of the axial flow fan 121 to improve its sealing performance.

[0045] When configuring the surface cooler 220, the surface cooler 220 includes a housing 221, a flow pipe and a heat exchange fin assembly; the flow pipe and the heat exchange fin assembly are placed inside the housing 221, and the heat exchange fin assembly is connected to the flow pipe, which is used to supply circulating water flow.

[0046] The housing 221 is equipped with a first air guide 222 and a second air guide. The first air guide 222 and the second air guide are distributed on the upper and lower sides of the housing 221, and the first air guide 222 is directly opposite the axial flow fan 121, and the second air guide is directly opposite the electrolytic cell 211.

[0047] Therefore, with the above-described structural arrangement, when the axial flow fan 121 starts, the airflow is guided into the casing 110 through the air inlet 111. Since the air inlet 111 is located directly below the electrolytic cell 211, the airflow, after passing through the electrolytic cell 211, will flow towards the surface cooler 220 located directly above the electrolytic cell 211. Because the air inlet of the axial flow fan 121 is connected to the first air guide 222, the airflow will be guided in through the second air guide 222. The airflow enters the casing 221 and, after exchanging heat with the heat exchange fin assembly, is discharged through the first air guide 222. Under the action of the axial flow fan 121, it flows towards the air outlet 112. Thus, through the structural arrangement of the axial flow fan 121, the air inlet 111 on the casing 110, the air outlet 112 on the casing 110, and the surface cooler 220, the airflow can exchange heat with the electrolytic cell 211 and the surface cooler 220 after entering the casing 110, thereby cooling the circulating water.

[0048] It should be noted that in this embodiment, when configuring the surface cooler 220, its function is to control the temperature of the electrolyte. The surface cooler 220 is typically placed in the electrolyte circulation loop, and the electrolyte temperature is regulated by the circulation of cooling water. The surface cooler 220 consists of a heat exchange fin assembly, flow pipes, and a shell 221. The heat exchange fin assembly includes multiple arrayed aluminum fins. The flow pipes are selected according to actual needs, and their diameter and number of rows should maximize the total contact area between the flow pipes, the aluminum fins, and the air. The number of aluminum fins should be as dense as possible without obstructing airflow. The shell of the surface cooler 220 should be made of stainless steel and have good sealing. Furthermore, the size of the air inlet of the axial fan 121 is larger than the size of the first air guide 222. This is to improve the sealing performance when the axial fan 121 is connected to the surface cooler 220.

[0049] In summary, please refer to Figure 1 and Figure 2The duct of the axial fan 121 is larger than the first air inlet 222 of the surface cooler 220. The folded edge at the bottom of the duct facilitates the positioning of the axial fan 121 on the surface cooler 220 and also improves the airtightness between the duct and the surface cooler 220. Depending on the actual layout, the length of the duct should be such that the top of the duct is level with the top of the chassis 110. Louvers are installed at the top of the duct, covering the opening at the top of the chassis 110.

[0050] Based on the above structural configuration, when configuring the axial flow fan 121, its air inlet and outlet are connected to the first air guide 222 and air outlet 112, respectively, to improve airflow efficiency.

[0051] Furthermore, in this embodiment, to prevent external debris from entering the casing 110, both the air inlet 111 and the air outlet 112 are equipped with filters. Also, in this embodiment, the air-cooling system is activated when the temperature of the circulating water or the electrolytic cell 211 is too high. Therefore, when its temperature drops below the required cooling temperature, the air-cooling system shuts down. Based on this, on / off valves can be installed at both the air inlet 111 and the air outlet 112 to block the air-cooling system when it is shut down.

[0052] In summary, based on the above-mentioned circulating water air-cooled system 100, please refer to... Figure 1 and Figure 2 This embodiment also provides a pure water SPE water electrolysis hydrogen production device, which includes a circulating pump, a water purification filter, and a circulating water air-cooling system 100 as described in any of the preceding embodiments; the circulating pump and the water purification filter are connected to the electrolysis unit 210 and the surface cooler 220 through pipelines. It should be noted that by adopting the above-mentioned circulating water air-cooling system 100, the pure water SPE water electrolysis hydrogen production device can form an air-cooling passage through the arrangement of the chassis 110 and the fan unit 120, so that the external airflow can exchange heat with the electrolysis unit 210 and the surface cooler 220 after entering the chassis 110, thereby cooling the structure and the circulating water inside, thus improving the cooling effect of the circulating water. Moreover, its structure is simple and easy to use, with a small size, and can be replaced in situ based on existing equipment, thereby reducing its use and modification costs.

[0053] In addition to the aforementioned structure, the pure water SPE water electrolysis hydrogen production equipment also includes a separator, valves, temperature transmitters and related control systems. Its specific structural principle is the same as that of existing technology, so it will not be described in detail here.

[0054] Please refer to Figure 1 and Figure 2By employing the aforementioned circulating water cooling system 100, during the operation of the pure water SPE water electrolysis hydrogen production equipment, the circulating water undergoes electrolysis in the electrolyzer 211, causing its temperature to rise. Once the temperature exceeds the set value, the control system activates the axial flow fan 121. Under the action of air pressure, ambient cold air enters through the air inlet 111 at the bottom of the casing 110, passes over the electrolyzer 211, enters the second air guide port of the surface cooler 220, and passes through the flow pipes and heat exchange fins within the surface cooler 220. The cold air carries away the heat from the electrolyzer 211 and the circulating water, becoming hot air. The hot air is discharged through the first air guide port 222 of the surface cooler 220, the cylinder of the axial flow fan 121, and the air outlet 112 at the top of the casing 110. When the circulating water temperature drops to the set value, the control system shuts down the axial flow fan 121.

[0055] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A circulating water-cooled system for use in a pure water SPE water electrolysis hydrogen production equipment, characterized in that: The circulating water air-cooling system includes a chassis and a fan unit; the chassis houses an electrolysis unit and a surface cooler, and the surface cooler is connected to the electrolysis unit. The fan unit is used to introduce external airflow into the chassis, blow it toward the electrolysis unit and the surface cooler, and lead the airflow flowing through the electrolysis unit and the surface cooler out of the chassis.

2. The circulating water-cooled air system according to claim 1, characterized in that: The electrolysis unit includes an electrolytic cell, which is located below the surface cooler; The chassis is equipped with an air inlet, which is located below the electrolytic cell.

3. The circulating water-cooled air system according to claim 2, characterized in that: The chassis is also equipped with an air outlet, which is located above the electrolysis unit.

4. The circulating water-cooled air system according to claim 3, characterized in that: The center lines of the air inlet and the air outlet coincide.

5. The circulating water-cooled air system according to claim 4, characterized in that: The fan unit includes an axial fan, which is connected to the chassis and located above the surface cooler; The axial flow fan is used to guide airflow into the casing through the air inlet, and then out through the air outlet after passing through the electrolytic cell and the surface cooler.

6. The circulating water air-cooled system according to claim 5, characterized in that: The surface cooler includes a shell, a flow pipe, and a heat exchange fin assembly; the flow pipe and the heat exchange fin assembly are placed inside the shell, and the heat exchange fin assembly is connected to the flow pipe, which is used to supply circulating water. The housing is equipped with a first air guide and a second air guide, which are distributed on the upper and lower sides of the housing. The first air guide is directly opposite the axial flow fan, and the second air guide is directly opposite the electrolytic cell.

7. The circulating water-cooled air system according to claim 6, characterized in that: The air inlet and outlet of the axial flow fan are respectively connected to the first air guide and the air outlet.

8. The circulating water-cooled air system according to claim 3, characterized in that: Both the air inlet and the air outlet are equipped with filters.

9. The circulating water-cooled air system according to claim 3, characterized in that: Both the air inlet and the air outlet are equipped with on / off valves.

10. A pure water SPE water electrolysis hydrogen production device, characterized in that: The pure water SPE water electrolysis hydrogen production equipment includes a circulating pump, a water purification filter, and a circulating water air cooling system as described in any one of claims 1-9; The circulating pump and the water purification filter are connected to the electrolysis unit and the surface cooler through pipelines.

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