Cooling system and electrolysis apparatus

Abstract

The embodiment of the application provides a cooling system and an electrolysis device, the cooling system is provided with a cooling water bag, a cooling water path, a circulating pump and a cooling structure, the cooling water bag directly adheres to the key heating parts of the rectifier cabinet, the cooling water path is connected with the cooling water bag, the circulating pump is connected with the cooling water path, and the low-conductivity cooling water can be continuously circulated along the cooling water bag and the cooling water path; when the low-conductivity cooling water flows through the cooling water bag, the rectifier cabinet is cooled and radiated; the cooling structure cools the low-conductivity cooling water in the cooling water path, so that the temperature of the low-conductivity cooling water in the cooling water path is controlled in a lower range, and then the low-conductivity cooling water can realize the cooling of the rectifier cabinet under the continuous circulation along the cooling water path and the cooling water bag, and the cooling cost of the rectifier cabinet is considered while avoiding the perforation of the cooling water bag.

Description

Technical Field

[0001] This application relates to the field of industrial hydrogen production technology, and in particular to a cooling system and electrolysis equipment. Background Technology

[0002] As the core of the power control of the electrolytic cell, the rectifier cabinet is responsible for converting AC power into DC power and supplying it to the electrolytic cell. Its internal components (such as thyristors) generate high temperatures during operation and require a high-efficiency cooling system for heat dissipation.

[0003] Currently, rectifier cabinets are generally cooled using circulating water from the factory's large-scale system. This circulating water is prone to scaling and corrosion in the pipes, necessitating the addition of corrosion and scale inhibitors. However, in actual operation, the conductivity of the circulating water significantly increases due to the addition of these inhibitors, causing electrochemical corrosion of the cooling water tank (made of copper) under prolonged high conductivity conditions. This leads to perforation, leakage, and other malfunctions. This not only affects the rectifier cabinet's heat dissipation efficiency but can also result in equipment downtime, increased maintenance costs, and even jeopardize the safe operation of the entire hydrogen production system.

[0004] If the circulating water is directly replaced with low-conductivity cooling water to cool the rectifier cabinet, the amount of low-conductivity cooling water required will be large, which will increase the cooling cost of the rectifier cabinet. Therefore, the current cooling system is difficult to balance the cooling cost of the rectifier cabinet with avoiding the perforation of the cooling water tank. Utility Model Content

[0005] To address the problem that existing rectifier cooling systems struggle to prevent cooling water tank perforation while simultaneously reducing rectifier cooling costs, this application provides a cooling system and electrolysis equipment. The cooling system utilizes a demineralized water cooling subsystem independent of the plant's circulating water system to replace the traditional high-conductivity circulating water cooling solution that relies on corrosion and scale inhibitors. This achieves the effect of preventing rectifier cooling water tank perforation while reducing rectifier cooling costs.

[0006] In a first aspect, embodiments of this application provide a cooling system, including a cooling water tank, for use in the rectifier cabinet to cool the rectifier cabinet;

[0007] Cooling water circuit, connected to the cooling water tank;

[0008] A circulating pump, connected to the cooling water circuit, is used to drive low-conductivity cooling water to circulate along the cooling water circuit and the cooling water reservoir;

[0009] A cooling structure, connected to the cooling water circuit, is used to cool the low conductivity cooling water in the cooling water circuit.

[0010] The cooling system provided in this application comprises a cooling water tank, cooling water circuits, a circulating pump, and a cooling structure. The cooling water tank is directly attached to the key heat-generating components of the rectifier cabinet. The cooling water circuits are connected to the cooling water tank, and the circulating pump is connected to the cooling water circuits, driving low-conductivity cooling water to continuously circulate along the cooling water tank and cooling water circuits. When the low-conductivity cooling water flows through the cooling water tank, it cools and dissipates heat from the rectifier cabinet, causing its temperature to rise. The cooling structure cools the low-conductivity cooling water in the cooling water circuits, thereby controlling the temperature of the low-conductivity cooling water in the cooling water circuits within a low range. This allows the low-conductivity cooling water to continuously circulate along the cooling water circuits and cooling water tanks, achieving the goal of cooling the rectifier cabinet.

[0011] By circulating low-conductivity cooling water and using a cooling structure to cool the low-conductivity cooling water, the cooling system only needs a small amount of low-conductivity cooling water in the cooling water circuit to cool the rectifier cabinet. This avoids perforation of the cooling water tank while also taking into account the cooling cost of the rectifier cabinet.

[0012] In some embodiments, the cooling structure includes a heat exchanger connected to the cooling water path for cooling the cooling water in the cooling water path by exchanging heat with the cooling water path.

[0013] In some embodiments, the cooling structure further includes a circulating water pipe connected to the heat exchanger for introducing circulating water into the heat exchanger to cool the cooling water through heat exchange between the circulating water and the cooling water.

[0014] In some embodiments, the heat exchanger includes a heat exchange chamber, the heat exchanger includes a heat exchange coil disposed in the heat exchange chamber, the heat exchange coil is connected to the circulating water pipe, the cooling water circuit is connected to the heat exchange chamber, and the heat exchanger is configured to exchange heat between the circulating water in the circulating water pipe and the cooling water in the heat exchange chamber.

[0015] In some embodiments, the cooling system further includes a demineralized water tank connected to the cooling water circuit for supplying demineralized water to the cooling water circuit.

[0016] In some embodiments, the demineralized water tank is provided with an inlet and an outlet. The inlet is connected to the heat exchanger through the cooling water circuit, and the outlet is connected to the circulating pump through the cooling water circuit. The demineralized water flowing out through the heat exchanger can enter the demineralized water tank through the inlet and flow out through the outlet.

[0017] In some embodiments, a flow regulating valve is provided in the cooling water path between the demineralized water tank and the circulating pump, the flow regulating valve being used to control the circulating flow rate of the demineralized water.

[0018] In some embodiments, the cooling water circuit is further provided with a temperature sensor, which is used to monitor the cooling water temperature of the cooling water circuit.

[0019] In some embodiments, the cooling structure is electrically connected to the temperature sensor and is used to control the temperature of the cooling water in the cooling water circuit according to the temperature monitored by the temperature sensor.

[0020] This application embodiment also provides an electrolysis apparatus, including:

[0021] Electrolytic cell;

[0022] A rectifier cabinet, connected to the electrolytic cell, is used to supply power to the electrolytic cell;

[0023] A cooling system, wherein the cooling water tank of the cooling system is located in the rectifier cabinet.

[0024] The electrolysis equipment provided in this application uses a cooling system to cool the rectifier cabinet, enabling the electrolysis of the electrolytic cell to operate in a continuous and stable state. Furthermore, the cooling system continuously circulates and cools the rectifier cabinet with low-conductivity cooling water, which reduces the operating cost of the electrolysis equipment. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 This is a schematic diagram of the cooling system provided in the embodiments of this application.

[0027] Figure label:

[0028] 10. Cooling water tank;

[0029] 20. Cooling water circuit; 21. Flow control valve; 22. Temperature sensor;

[0030] 30. Circulating pump;

[0031] 40. Cooling structure; 41. Heat exchanger; 411. Heat exchange chamber; 412. Heat exchange coil; 42. Circulating water pipe;

[0032] 50. Demineralized water tank.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] When the electrolysis equipment performs electrolysis, the rectifier cabinet is in continuous operation. The rectifier cabinet's cooling system relies on the plant's large circulating water system. The specific process of the circulating water system is as follows: the plant's circulating water is pumped to the rectifier cabinet's cooling water tank to cool components such as the silicon controlled rectifier (SCR), and then returns to the circulating water system for further cooling. To inhibit the deposition of scale-forming ions such as calcium, magnesium, and silicon in the circulating water, and to prevent corrosion from dissolved oxygen and chloride ions, the system requires continuous addition of corrosion and scale inhibitors. However, while the addition of corrosion and scale inhibitors can delay scaling and corrosion, they themselves contain ionic components, causing the conductivity of the circulating water to continuously increase (typically exceeding 800 μS / cm). When the high-conductivity cooling water flows in the copper cooling water tank, it exacerbates the electrochemical corrosion reaction, causing the inner wall of the copper cooling water tank to gradually thin and even perforate.

[0036] Using cooling water with low conductivity directly will result in a huge consumption of such water, thus increasing the cooling cost of the rectifier cabinet.

[0037] To address the technical challenge of current rectifier cabinet cooling systems failing to prevent cooling water tank perforation while simultaneously reducing rectifier cabinet cooling costs, this application provides a cooling system and electrolysis equipment. The cooling system utilizes a demineralized water cooling subsystem independent of the plant's circulating water system to replace the traditional high-conductivity circulating water cooling solution that relies on corrosion and scale inhibitors. This achieves the goal of preventing rectifier cabinet cooling water tank perforation while simultaneously reducing rectifier cabinet cooling costs.

[0038] It should be noted that the cooling system described in this application is used for, but not limited to, cooling of rectifier cabinets. It can also be applied to cooling of other industrial equipment in the chemical and energy industries that require efficient and low-maintenance cooling systems. For ease of explanation, this application only uses the application of the cooling system to rectifier cabinets as an example. The principle of the cooling system applied to other industrial equipment in the chemical and energy industries that require efficient and low-maintenance cooling systems is essentially the same as that applied to rectifier cabinets, and will not be elaborated here.

[0039] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0040] To better understand this application, the following is combined with... Figure 1 The technical solution of this application is described in detail below:

[0041] This application provides a cooling system, such as Figure 1 As shown, it includes a cooling water tank 10, a cooling water circuit 20, a circulating pump 30, and a cooling structure 40. The cooling water tank 10 is installed in the rectifier cabinet to cool the rectifier cabinet. The cooling water circuit 20 is connected to the cooling water tank 10. The circulating pump 30 is connected to the cooling water circuit 20 and is used to drive low conductivity cooling water to circulate along the cooling water circuit 20 and the cooling water tank 10. The cooling structure 40 is connected to the cooling water circuit 20 and is used to cool the low conductivity cooling water in the cooling water circuit 20.

[0042] The cooling system provided in this application comprises a cooling water reservoir 10, a cooling water circuit 20, a circulating pump 30, and a cooling structure 40. The cooling water reservoir 10 is directly attached to the key heat-generating parts of the rectifier cabinet. The cooling water circuit 20 is connected to the cooling water reservoir 10, and the circulating pump 30 is connected to the cooling water circuit 20, which drives low-conductivity cooling water to continuously circulate along the cooling water reservoir 10 and the cooling water circuit 20. When the low-conductivity cooling water flows through the cooling water reservoir 10, it cools and dissipates heat from the rectifier cabinet, while its temperature rises. The cooling structure 40 cools the low-conductivity cooling water in the cooling water circuit 20, thereby controlling the temperature of the low-conductivity cooling water in the cooling water circuit 20 within a low range. This allows the low-conductivity cooling water to continuously circulate along the cooling water circuit 20 and the cooling water reservoir 10, thus achieving the cooling of the rectifier cabinet.

[0043] By circulating low-conductivity cooling water and cooling structure 40 to cool the low-conductivity cooling water, the cooling system only needs a small amount of low-conductivity cooling water in the cooling water path 20 to cool the rectifier cabinet, thus avoiding perforation of the cooling water tank 10 while taking into account the cooling cost of the rectifier cabinet.

[0044] For example, the cooling water tank 10 is a copper water tank used to cool components inside the rectifier cabinet (such as silicon controlled rectifiers), such as a metal cavity with cooling channels.

[0045] For example, the cooling water passage 20 is a fluid transport pipe for connecting various components, such as a carbon steel pipe, a stainless steel pipe, or a polyethylene pipe.

[0046] For example, the circulating pump 30 is a pump device for driving low conductivity cooling water to circulate in the cooling water path 20, such as a centrifugal pump or a gear pump.

[0047] For example, low conductivity cooling water refers to water with very low conductivity and very low ion content, such as deionized water, ultrapure water, double-distilled water, etc.

[0048] In one embodiment, such as Figure 1 As shown, the cooling system also includes a demineralized water tank 50, which is connected to the cooling water circuit 20 and used to supply demineralized water to the cooling water circuit 20. Specifically, the demineralized water tank 50 can provide low-conductivity demineralized water to the cooling water circuit 20. Through the circulation of the demineralized water along the cooling water circuit 20, the low conductivity of the demineralized water prevents it from forming an effective electrochemical corrosion circuit when flowing in the copper rectifier cabinet cooling water tank 10, thereby completely blocking the corrosion path caused by the high-conductivity cooling water. This can achieve cooling and heat dissipation of the rectifier cabinet while preventing perforation of the cooling water tank 10.

[0049] For example, the demineralized water tank 50 is a container for storing demineralized water with a conductivity lower than that of industrial circulating water, such as water treated by ion exchange or reverse osmosis processes.

[0050] For example, the cooling structure 40 can achieve cooling of the cooling water through air cooling or water cooling.

[0051] In one embodiment, such as Figure 1 As shown, the cooling structure 40 includes a heat exchanger 41 connected to the cooling water path 20, used to cool the cooling water in the cooling water path 20 by exchanging heat with it. Specifically, the demineralized water absorbs heat generated by internal components (such as silicon controlled rectifiers) in the cooling water tank 10, causing its temperature to rise. The heated demineralized water then enters the heat exchanger 41, where it exchanges heat with a low-temperature fluid on the other side, cooling the demineralized water back to its initial temperature. By exchanging heat with the cooling water in the cooling water path 20, the heat exchanger 41 keeps the cooling water in the cooling water path 20 at a consistently low temperature, thus achieving continuous cooling of the rectifier.

[0052] In one embodiment, such as Figure 1As shown, the demineralized water tank 50 is equipped with an inlet and an outlet. The inlet is connected to a heat exchanger 41 via a cooling water passage 20, and the outlet is connected to a circulating pump 30 via the cooling water passage 20. The demineralized water flowing out of the heat exchanger 41 can enter the demineralized water tank 50 through the inlet and flow out through the outlet. Specifically, the demineralized water cooled by the heat exchanger 41 returns to the demineralized water tank 50 through the cooling water passage 20 for temporary storage, and then flows back from the demineralized water tank 50 to the cooling water passage 20, allowing the demineralized water tank 50 to adjust the amount of demineralized water in the cooling water passage 20 according to demand.

[0053] In this embodiment, as Figure 1 As shown, the inlet of the demineralized water tank 50 is located at the top of the demineralized water tank 50, and the outlet of the demineralized water tank 50 is located at the bottom of the demineralized water tank 50. This achieves top water return and bottom water outlet for the demineralized water tank 50.

[0054] In one embodiment, such as Figure 1 As shown, a flow regulating valve 21 is installed in the cooling water circuit 20 between the demineralized water tank 50 and the circulating pump 30. The flow regulating valve 21 is used to control the circulating flow rate of the demineralized water. Specifically, when the cooling demand of the rectifier cabinet changes, the flow regulating valve 21 can dynamically adjust the supply of demineralized water according to the actual demand, ensuring that the temperature in the cooling water tank 10 is maintained within a reasonable range. By setting the flow regulating valve 21, dynamic control of the circulating flow rate of demineralized water is achieved. This technology can adjust the cooling water supply according to the real-time heat dissipation demand of the rectifier cabinet, avoiding energy waste caused by excessive flow or insufficient cooling caused by insufficient flow, thereby improving the system's energy efficiency ratio and adaptability.

[0055] In one embodiment, such as Figure 1 As shown, the cooling structure 40 also includes a circulating water pipe 42, which is connected to the heat exchanger 41 and is used to introduce circulating water into the heat exchanger 41 to cool the cooling water through heat exchange between the circulating water and the cooling water.

[0056] Specifically, the plant circulating water flows inside the shell and conducts heat with the demineralized water through the tube bundle wall, transferring the heat of the demineralized water to the plant circulating water to achieve cooling of the demineralized water.

[0057] In one embodiment, such as Figure 1As shown, a heat exchanger 41 includes a heat exchange chamber 411 and a heat exchange coil 412. The heat exchange coil 412 is located within the heat exchange chamber 411 and is connected to a circulating water pipe 42. A cooling water circuit 20 is also connected to the heat exchange chamber 411. The heat exchanger 41 is configured to exchange heat between the circulating water in the circulating water pipe 42 and the cooling water in the heat exchange chamber 411. Specifically, the demineralized water absorbs heat generated by components (such as silicon controlled rectifiers) inside the rectifier cabinet in the cooling water reservoir 10, causing its temperature to rise. The heated demineralized water then enters the heat exchange chamber 411, while the factory circulating water enters the heat exchange coil 412. The low-temperature circulating water in the heat exchange coil 412 exchanges heat with the demineralized water in the heat exchange chamber 411, thus cooling the demineralized water. The heat exchange coil 412 prevents the circulating water and cooling water from mixing, allowing heat exchange only through conduction, thereby maintaining the low electrical conductivity of the demineralized water.

[0058] Specifically, demineralized water (initial temperature approximately 25°C) is pumped from demineralized water tank 50 to cooling water tank 10 of the rectifier cabinet via circulating pump 30. After cooling high-temperature components such as the silicon controlled rectifier (SCR), the water temperature rises to approximately 35°C. The heated demineralized water then enters the heat exchange chamber 411 of heat exchanger 41 via the return water pipe, where it exchanges heat with the factory circulating water (temperature approximately 25°C) in heat exchange coil 412, cooling the demineralized water temperature back to approximately 25°C. The cooled demineralized water then returns to demineralized water tank 50 via circulating pipe and re-enters circulating pump 30, forming a closed loop. Throughout the process, the demineralized water remains completely isolated from the corrosion and scale inhibitors, maintaining a low conductivity level. The factory circulating water serves only as a heat recovery medium and does not directly contact the rectifier cabinet cooling system, thus avoiding the risk of corrosion to the equipment due to its high conductivity.

[0059] In one embodiment, a baffle plate is provided inside the heat exchange chamber 411. The heat exchange coil 412 and the baffle plate are used to enhance the heat exchange efficiency between the demineralized water and the plant circulating water, and improve the heat transfer efficiency. The baffle plate further enhances the heat exchange effect by changing the flow direction of the plant circulating water on the shell side. This shortens the cooling time of the demineralized water, reduces the energy consumption of the circulating pump 30, and enhances the dynamic response capability of the system under high temperature and high load conditions.

[0060] In one embodiment, the inner surface of the cooling water tank 10 is coated with a titanium alloy composite coating, which serves to isolate the demineralized water from direct contact with the copper substrate. The titanium alloy composite coating covers the inner surface of the rectifier cabinet cooling water tank 10, forming a physical isolation layer that prevents the demineralized water from directly contacting the copper substrate. This coating, through chemical stability, blocks the electrochemical corrosion path, protecting the cooling water tank 10 from micro-corrosion caused by trace ion residues or long-term operation. This enhances the corrosion resistance of the cooling water tank 10, extends the service life of the equipment in extreme environments, and reduces maintenance frequency and costs.

[0061] The thickness of the titanium alloy composite coating ranges from 5 μm to 20 μm. The thickness design of the titanium alloy composite coating ensures that it provides sufficient physical insulation protection without reducing thermal conductivity due to excessive thickness. This thickness range strikes a balance between corrosion resistance and thermal conductivity.

[0062] In one embodiment, such as Figure 1 As shown, the cooling water circuit 20 is also equipped with a temperature sensor 22, which is used to monitor the cooling water temperature of the cooling water circuit 20. Specifically, the temperature sensor 22 can monitor the cooling water temperature of the cooling water circuit 20 in real time. When the cooling water temperature is too high, the cooling structure 40 accelerates the cooling process. When the cooling water temperature reaches the cooling temperature, the cooling structure 40 maintains the current cooling state, thereby controlling the cooling water temperature of the cooling water circuit 20 at a cooling temperature that can cool the rectifier cabinet, so that the cooling system can maintain stable operation.

[0063] In this embodiment, the temperature sensor 22 is installed in the cooling water circuit 20 that connects the circulating pump 30 and the cooling water tank 10.

[0064] In one embodiment, the cooling structure 40 is electrically connected to the temperature sensor 22 and is used to control the temperature of the cooling water in the cooling water circuit 20 according to the temperature monitored by the temperature sensor 22. Specifically, by being electrically connected to the temperature sensor 22, the cooling structure 40 can adjust the cooling water temperature in real time according to the temperature measured by the temperature sensor 22, thereby maintaining the stable operation of the cooling system and realizing real-time heat dissipation of the rectifier cabinet.

[0065] Specifically, when the temperature sensor 22 detects that the temperature of the cooling water is higher than 25°C, the water supply of the circulating water increases. When the temperature sensor 22 detects that the temperature of the cooling water is maintained at or below 25°C, the water supply of the circulating water remains unchanged, thereby controlling the temperature of the cooling water entering the rectifier cabinet to within 25°C.

[0066] This application embodiment also provides an electrolysis device, including an electrolytic cell, a rectifier cabinet, and a cooling system. The electrolytic cell can perform electrolysis, the rectifier cabinet is connected to the electrolytic cell and is used to supply power to the electrolytic cell, and the cooling water tank 10 of the cooling system is disposed in the rectifier cabinet and can perform real-time heat dissipation and cooling of the rectifier cabinet.

[0067] The electrolysis equipment provided in this application uses a cooling system to cool the rectifier cabinet, enabling the electrolysis of the electrolytic cell to operate in a continuous and stable state. The cooling system uses low-conductivity cooling water to continuously circulate and cool the rectifier cabinet.

[0068] Low conductivity cooling water can not only effectively reduce the extra energy consumption caused by current conduction during the operation of the rectifier cabinet, but also reduce the risk of corrosion damage to internal components of the rectifier cabinet due to water quality problems, thereby extending the service life of the rectifier cabinet and the entire electrolysis equipment, further reducing the frequency of equipment maintenance and replacement, and comprehensively reducing the operating cost of the electrolysis equipment from multiple aspects.

[0069] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A cooling system for cooling a rectifier cabinet, characterized in that, include: A cooling water tank is installed in the rectifier cabinet to cool the rectifier cabinet; Cooling water circuit, connected to the cooling water tank; A circulating pump, connected to the cooling water circuit, is used to drive low-conductivity cooling water to circulate along the cooling water circuit and the cooling water reservoir; A cooling structure, connected to the cooling water circuit, is used to cool the low conductivity cooling water in the cooling water circuit.

2. The cooling system according to claim 1, characterized in that, The cooling structure includes a heat exchanger connected to the cooling water circuit, which is used to cool the cooling water in the cooling water circuit by exchanging heat with the cooling water circuit.

3. The cooling system according to claim 2, characterized in that, The cooling structure also includes a circulating water pipe connected to the heat exchanger, which is used to introduce circulating water into the heat exchanger to cool the cooling water through heat exchange between the circulating water and the cooling water.

4. The cooling system according to claim 3, characterized in that, The heat exchanger is provided with a heat exchange chamber. The heat exchanger includes a heat exchange coil, which is disposed in the heat exchange chamber. The heat exchange coil is connected to the circulating water pipe, and the cooling water circuit is connected to the heat exchange chamber. The heat exchanger is configured to exchange heat between the circulating water in the circulating water pipe and the cooling water in the heat exchange chamber.

5. The cooling system according to claim 2, characterized in that, The cooling system also includes a demineralized water tank, which is connected to the cooling water circuit and is used to supply demineralized water to the cooling water circuit.

6. The cooling system according to claim 5, characterized in that, The demineralized water tank is provided with an inlet and an outlet. The inlet is connected to the heat exchanger through the cooling water circuit, and the outlet is connected to the circulating pump through the cooling water circuit. The demineralized water flowing out of the heat exchanger can enter the demineralized water tank through the inlet and flow out through the outlet.

7. The cooling system according to claim 6, characterized in that, A flow regulating valve is installed in the cooling water circuit between the demineralized water tank and the circulating pump. The flow regulating valve is used to control the circulating flow rate of the demineralized water.

8. The cooling system according to any one of claims 1-4, characterized in that, The cooling water circuit is also equipped with a temperature sensor, which is used to monitor the cooling water temperature of the cooling water circuit.

9. The cooling system according to claim 8, characterized in that, The cooling structure is electrically connected to the temperature sensor and is used to control the temperature of the cooling water in the cooling water circuit according to the temperature monitored by the temperature sensor.

10. An electrolysis device, characterized in that, include: Electrolytic cell; A rectifier cabinet, connected to the electrolytic cell, is used to supply power to the electrolytic cell; A cooling system, wherein the cooling water tank of the cooling system is located in the rectifier cabinet.

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