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

Abstract

The invention 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] The invention relates to the technical field of water electrolysis hydrogen production, and in particular to a circulating water air cooling system and pure water SPE water electrolysis hydrogen production equipment. Background Art

[0002] SPE water electrolysis hydrogen production equipment relies on SPE electrolyzers. Pure water undergoes electrolysis reaction to generate hydrogen and oxygen, which are separated by separators to obtain the required gas. The purity of the gas produced by electrolysis in the SPE electrolyzer is related to temperature and water quality. In order to obtain higher purity gas and ensure the stable operation of the equipment, it is necessary to improve the purity of water and control the temperature of circulating water. At present, circulating water is filtered and treated by pure water machine and mixed bed resin. Because the use temperature of resin is relatively low, generally around 60°C, the temperature of circulating water generally does not exceed 60°C. Usually, the air temperature in summer is above 30°C, and the temperature difference between circulating water and air is no more than 30°C. Compared with the temperature difference of 50°C of alkaline water electrolysis hydrogen production equipment, the temperature difference is small, resulting in poor cooling effect of circulating water.

[0003] Based on this, SPE water electrolysis hydrogen production equipment mostly uses an external chiller, adds a chilled water pipeline in the hydrogen production machine, and uses the produced chilled water to cool the circulating water pipeline. Although the water cooling method of the chiller can achieve the effect of cooling the circulating water, the selection of the chiller increases the overall cost of the equipment and increases the equipment footprint. In addition, alkaline water electrolysis hydrogen production equipment mostly uses air cooling, and water cooling is not conducive to the in-situ replacement of the equipment. Summary of the invention

[0004] The purpose of the present invention includes providing 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 has a simple structure and is easy to use, a small structure volume, and can be replaced in situ based on the existing equipment, thereby reducing its use and modification costs.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a circulating water air cooling system for pure water SPE water electrolysis hydrogen production equipment, the circulating water air cooling system comprising a chassis and a fan unit; the chassis has an electrolysis unit and a surface cooler built in, 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 electrolytic unit and the surface cooler, and lead the airflow passing through the electrolytic unit and the surface cooler to the outside of the chassis.

[0008] In an optional embodiment, the electrolysis unit includes an electrolysis cell, and the electrolysis cell is 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 embodiment, the chassis is further configured with an air outlet, and the air outlet is located above the electrolysis unit.

[0011] In an optional embodiment, the center lines of the air inlet and the air outlet coincide with each other.

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

[0013] The axial flow fan is used to guide the air flow into the chassis through the air inlet, and then guide the air flow out from the air outlet after passing through the electrolytic cell and the surface cooler.

[0014] In an optional embodiment, the surface cooler includes a shell, a circulation pipe and a heat exchange fin group; the circulation pipe and the heat exchange fin group are placed in the shell, and the heat exchange fin group is connected to the circulation pipe, and the circulation pipe is used for circulating water to flow;

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

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

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

[0018] In an optional embodiment, both the air inlet and the air outlet are provided with on-off valves.

[0019] In a second aspect, the present invention provides a pure water SPE water electrolysis hydrogen production equipment, the pure water SPE water electrolysis hydrogen production equipment comprising a circulation pump, a water purification filter and a circulating water air cooling system as any one of the aforementioned embodiments;

[0020] The circulation pump and the water purification filter are connected with the electrolysis unit and the 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 by the embodiments of the present invention include:

[0022] The circulating water air cooling system is used for pure water SPE water electrolysis hydrogen production equipment, and the circulating water air cooling system includes a chassis and a fan unit; the chassis has an electrolysis unit and a surface cooler built in, 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 to the outside of the chassis. The circulating water air cooling system and pure water SPE water electrolysis hydrogen production equipment can improve the cooling effect of circulating water, and its structure is simple and easy to use, and its structure is small in size. It can be replaced in situ based on the existing equipment, thereby reducing its use and modification costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of the circulating water-air cooling system provided in this embodiment;

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

[0026] Icon: 100 - circulating water cooling system; 110 - chassis; 120 - fan unit; 210 - electrolytic unit; 220 - surface cooler; 211 - electrolytic cell; 111 - air inlet; 112 - air outlet; 121 - axial flow fan; 221 - housing; 222 - first air guide port. DETAILED DESCRIPTION

[0027] The SPE water electrolysis hydrogen production equipment relies on the SPE electrolyzer 211. Pure water undergoes electrolysis reaction to generate hydrogen and oxygen, which are separated by a separator to obtain the required gas. The purity of the gas produced by the electrolysis of the SPE electrolyzer 211 is related to the temperature and water quality. In order to obtain gas with higher purity and ensure the stable operation of the equipment, it is necessary to improve the purity of the water and control the temperature of the circulating water. At present, the circulating water is filtered and treated by a pure water machine and a mixed bed resin. Because the resin is used at a low temperature, generally around 60°C, the temperature of the circulating water generally does not exceed 60°C. Usually, the air temperature in summer is above 30°C, and the temperature difference between the circulating water and the air is no more than 30°C. Compared with the temperature difference of 50°C of the alkaline water electrolysis hydrogen production equipment, the temperature difference is small, resulting in poor cooling effect of the circulating water. Based on this, the SPE water electrolysis hydrogen production equipment mostly uses an external chiller, adds a chilled water pipeline in the hydrogen production machine, and cools the circulating water pipeline with the produced chilled water. Although the water cooling method of the chiller can achieve the effect of circulating water cooling, the selection of the chiller increases the overall cost of the equipment and increases the equipment footprint. In addition, alkaline water electrolysis hydrogen production equipment mostly uses air cooling, and water cooling is not conducive to the in-situ replacement of the equipment.

[0028] Based on the above reasons, the present embodiment provides a circulating water air cooling system 100 for pure water SPE water electrolysis hydrogen production equipment, which can cool the circulating water based on the air cooling principle, and has a simple structure and is easy to use, with a small structure volume. It can be replaced in situ based on the existing equipment, thereby reducing its use and modification costs.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0035] Please refer to Figure 1 and Figure 2 The present embodiment provides a circulating water air cooling system 100 for a pure water SPE water electrolysis hydrogen production device. The circulating water air cooling system 100 includes a chassis 110 and a fan unit 120. The chassis 110 has an electrolysis unit 210 and a surface cooler 220 built therein, 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 chassis 110 , blow it toward the electrolysis unit 210 and the surface cooler 220 , and lead the airflow passing through the electrolysis unit 210 and the surface cooler 220 out of the chassis 110 .

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

[0038] First, the circulating water air cooling system 100 is used for pure water SPE water electrolysis hydrogen production equipment, and its purpose is to improve the cooling effect of 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 cooling system 100 includes a chassis 110 and a fan unit 120; wherein the chassis 110 has an electrolysis unit 210 and a surface cooler 220 built therein, 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 to cool down;

[0040] Therefore, on the basis of the above structure, the fan unit 120 introduces external airflow into the chassis 110, blows it toward the electrolysis unit 210 and the surface cooler 220, and leads the airflow flowing through the electrolysis unit 210 and the surface cooler 220 to the outside of the chassis 110. That is, in this way, an air-cooling passage can be formed 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 structural body and the circulating water inside it, and thus in this way the cooling effect of the circulating water can be improved, and its structure is simple and easy to use, the structure is small in size, and it can be replaced in situ based on the existing equipment, thereby reducing its use and modification costs.

[0041] For further information, please refer to Figure 1 and Figure 2 In this embodiment, the electrolysis unit 210 includes an electrolysis cell 211, which is located below the surface cooler 220; the chassis 110 is provided with an air inlet 111, which is located below the electrolysis cell 211. Therefore, when the circulating water cooling system 100 is working, the airflow can cool down the body of the electrolysis cell 211 after entering the chassis 110.

[0042] Furthermore, when the airflow after heat exchange with the electrolytic cell 211 and the surface cooler 220 is discharged, the present embodiment adopts a method in which the chassis 110 is also provided 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 with each other, so as to accelerate the heat exchange efficiency of the airflow in this way.

[0043] Based on the above content, 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, and the air outlet 112 is located at the upper end of the chassis 110, and the center lines of the air inlet 111 and the air outlet 112 coincide with each other, and along the direction of their center lines, the fan unit 120, the surface cooler 220 and the electrolytic cell 211 in the chassis 110 are arranged in sequence 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 chassis 110 and is located above the surface cooler 220; the axial flow fan 121 is used to guide the air flow into the chassis 110 through the air inlet 111, and is guided out from 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 cylinder of the axial flow fan 121 to improve its sealing performance.

[0045] When configuring the surface cooler 220, the surface cooler 220 includes a shell 221, a circulation pipe and a heat exchange fin group; the circulation pipe and the heat exchange fin group are placed in the shell 221, and the heat exchange fin group is connected to the circulation pipe, and the circulation pipe is used to supply circulating water;

[0046] The shell 221 is provided with a first air duct 222 and a second air duct. The first air duct 222 and the second air duct are distributed at the upper and lower sides of the shell 221 . The first air duct 222 faces the axial flow fan 121 , and the second air duct faces the electrolytic cell 211 .

[0047] Thus, through the above-mentioned structural setting, when the axial flow fan 121 is started, the air flow can be introduced into the chassis 110 through the air inlet 111, and then because the air inlet 111 is located directly below the electrolytic cell 211, after the air flow passes through the electrolytic cell 211, it will flow toward the surface cooler 220 located directly above the electrolytic cell 211, and because the air inlet of the axial flow fan 121 is connected to the first air guide 222, the air flow will be introduced into the chassis 110 through the second air guide. To the shell 221, and after exchanging heat with the heat exchange fin group, it is discharged from the first air guide port 222, and flows toward the air outlet 112 under the action of the axial flow fan 121. Therefore, through the structural arrangement of the axial flow fan 121, the air inlet 111 on the chassis 110, the air outlet 112 on the chassis 110 and the surface cooler 220, the airflow can exchange heat with the electrolytic cell 211 and the surface cooler 220 after entering the chassis 110, thereby cooling the circulating water.

[0048] It should be noted that in this embodiment, when configuring the cooler 220, the function of the cooler 220 is to control the temperature of the electrolyte, and the cooler 220 is usually arranged in the electrolyte circulation loop to adjust the temperature of the electrolyte by circulating cooling water. Since the cooler 220 is composed of a heat exchange fin group, a circulation pipe, a shell 221, etc., and the heat exchange fin group includes a plurality of aluminum fins arranged in an array, the circulation pipe is selected according to actual needs, and its pipe diameter and number of rows should maximize the total contact area between the circulation pipe and the aluminum fins and the air. The number of aluminum fins should be as dense as possible while ensuring that the air circulation is not hindered. The outer shell of the cooler 220 should be made of stainless steel and well sealed. In addition, the size of the air inlet of the axial flow fan 121 is larger than the size of the first air guide 222. The purpose is to improve its sealing when the axial flow fan 121 is docked with the cooler 220.

[0049] In summary, please refer to Figure 1 and Figure 2The air duct of the axial flow fan 121 is larger than the first air guide port 222 of the cooler 220. The bottom fold of the air duct facilitates the positioning of the axial flow fan 121 on the cooler 220 and facilitates the airtightness between the air duct and the cooler 220. According to the actual arrangement, the length of the air duct should be such that the top of the air duct is level with the top of the cabinet 110. A shutter is provided on the top of the air duct, and the shutter can cover the top opening of the cabinet 110.

[0050] Based on the above structural setting, when the axial flow fan 121 is configured, its air inlet and air outlet are respectively connected to the first air guide port 222 and the air outlet 112 to improve the circulation efficiency of the airflow.

[0051] Moreover, in this embodiment, in order to prevent external debris from entering the chassis 110, filters are provided at the air inlet 111 and the air outlet 112. Moreover, in this embodiment, the air cooling system is started when the temperature of the circulating water or the electrolytic cell 211 is too high. Therefore, when the temperature is lower than the temperature to be cooled, the air cooling system is shut down. Based on this, on-off valves can be provided at the air inlet 111 and the air outlet 112, the purpose of which is to block the air cooling system when it is shut down.

[0052] In summary, based on the above-mentioned circulating water cooling system 100, please refer to Figure 1 and Figure 2 This embodiment also 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 100 as in any one of the above embodiments; the circulating pump and the water purification filter are connected to the electrolysis unit 210 and the surface cooler 220 through a pipeline. It should be noted that the pure water SPE water electrolysis hydrogen production equipment can form an air-cooling passage through the setting of the chassis 110 and the fan unit 120 by adopting the above-mentioned circulating water air cooling system 100, 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 structural body and the circulating water inside it, thereby improving the cooling effect of the circulating water in this way, and its structure is simple and easy to use, the structure is small in size, and it can be replaced in situ on the basis of the current equipment, thereby reducing its use and transformation costs.

[0053] In addition to the aforementioned structure, the pure water SPE water electrolysis hydrogen production equipment also includes a separator, a valve, a temperature transmitter and a related control system. Its specific structural principle is the same as that of the prior art, so it will not be repeated here.

[0054] Please refer to Figure 1 and Figure 2By adopting the above-mentioned circulating water air cooling system 100, during the operation of the pure water SPE water electrolysis hydrogen production equipment, the circulating water has an electrolysis reaction in the electrolytic cell 211, and its temperature rises. When it exceeds the set temperature, the control system controls the axial flow fan 121 to start. Under the action of wind pressure, the surrounding cold air enters through the air inlet 111 at the bottom of the chassis 110, blows through the electrolytic cell 211, enters the second air guide port of the surface cooler 220, blows through the circulation pipe and the heat exchange fin group in the surface cooler 220, and the cold air carries away the heat of the electrolytic cell 211 and the circulating water to become hot air. The hot air passes through the first air guide port 222 of the surface cooler 220, the cylinder of the axial flow fan 121, and is discharged from the air outlet 112 on the top of the chassis 110; and when the circulating water temperature drops to the set value, the control system controls the axial flow fan 121 to be turned off.

[0055] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A circulating water air cooling system for pure water SPE water electrolysis hydrogen production equipment, characterized by: The circulating water air cooling system comprises a chassis and a fan unit; the chassis is equipped with an electrolytic unit and a surface cooler, and the surface cooler is connected to the electrolytic 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 passing through the electrolysis unit and the surface cooler to the outside of the chassis.

2. The circulating water-air cooling system according to claim 1 is characterized in that: The electrolysis unit comprises an electrolysis tank, and the electrolysis tank is located below the surface cooler; The chassis is provided with an air inlet, and the air inlet is located below the electrolytic cell.

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

4. The circulating water-air cooling system according to claim 3 is characterized in that: The center lines of the air inlet and the air outlet coincide with each other.

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

6. The circulating water-air cooling system according to claim 5, characterized in that: The surface cooler comprises a shell, a circulation pipe and a heat exchange fin group; the circulation pipe and the heat exchange fin group are placed in the shell, and the heat exchange fin group is connected to the circulation pipe, and the circulation pipe is used for circulating water to flow; The shell is provided with a first air guide port and a second air guide port, the first air guide port and the second air guide port are distributed on the upper and lower sides of the shell, and the first air guide port is opposite to the axial flow fan, and the second air guide port is opposite to the electrolytic cell.

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

8. The circulating water-air cooling system according to claim 3 is characterized in that: The air inlet and the air outlet are both provided with filters.

9. The circulating water-air cooling system according to claim 3, characterized in that: The air inlet and the air outlet are both provided with on-off valves.

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

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