Liquid cooling system and hydrogen production rectifier

Abstract

The application relates to a liquid cooling system and a hydrogen production rectifier, and the liquid cooling system comprises a cooling device, a water inlet pipeline, a water outlet pipeline and a connecting pipeline. The water inlet pipeline comprises a water inlet main pipeline and at least one water inlet branch pipeline, and the flow rate of each water inlet branch pipeline can be adjusted. The water outlet pipeline comprises a water outlet main pipeline and at least one water outlet branch pipeline, and the flow rate of each water outlet branch pipeline can be adjusted. The connecting pipeline is connected between the water inlet main pipeline and the water outlet main pipeline, and the connecting pipeline can be switched between a conducting state and a disconnected state. When a certain water inlet branch pipeline or water outlet branch pipeline needs to be overhauled, the flow rate of the water inlet branch pipeline or water outlet branch pipeline to be overhauled can be adjusted to zero. When sewage needs to be discharged, the sewage in the water inlet main pipeline is directly discharged from the water outlet main pipeline through the connecting pipeline, so that the problem that the sewage in the water inlet pipeline cannot be completely discharged is effectively avoided.

Description

Technical Field

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

[0002] Hydrogen rectifiers are commonly used equipment in the new energy field, primarily providing a stable current output for hydrogen production via water electrolysis. When the electrolyzer is operating, the hydrogen rectifier uses power semiconductor devices to rectify the AC power from the power grid into a stable DC power, meeting the voltage / current requirements of the electrolyzer.

[0003] Taking a three-phase bridge thyristor rectifier as an example, heat dissipation is required for the thyristors during rectifier operation, hence the need for a liquid cooling system. However, conventional liquid cooling systems suffer from structural defects, with numerous branch pipes making maintenance difficult, and they cannot smoothly discharge all wastewater during the sewage discharge process. Utility Model Content

[0004] Therefore, it is necessary to provide a liquid cooling system and hydrogen rectifier to address the problems of difficult maintenance and incomplete sewage discharge in liquid cooling systems.

[0005] A liquid cooling system, comprising:

[0006] Cooling device;

[0007] The water inlet pipeline includes a main water inlet pipe and at least one branch water inlet pipe. One end of each branch water inlet pipe is connected to the side wall of the main water inlet pipe, and the other end of each branch water inlet pipe is connected to the water inlet of the cooling device. The flow rate of each branch water inlet pipe is adjustable.

[0008] The water outlet pipeline includes a main water outlet pipe and at least one branch water outlet pipe. One end of each branch water outlet pipe is connected to the side wall of the main water outlet pipe, and the other end of each branch water outlet pipe is connected to the water outlet of the cooling device. The flow rate of each branch water outlet pipe is adjustable.

[0009] A connecting pipe is provided between the main inlet pipe and the main outlet pipe, and the connecting pipe can switch between a connected state and a disconnected state.

[0010] In one embodiment, each of the water inlet branch pipes is provided with a first on / off control unit, which is used to adjust the flow rate of the water inlet branch pipe.

[0011] In one embodiment, the first on / off control unit is an on / off valve.

[0012] In one embodiment, each of the outlet branch pipes is provided with a second on / off control unit, which is used to adjust the flow rate of the outlet branch pipe.

[0013] In one embodiment, the second on / off control unit is an on / off valve.

[0014] In one embodiment, the liquid cooling system further includes a third on / off control unit, which is located between the connecting pipe and the main water inlet pipe. The third on / off control unit can switch between an open state and a closed state, so that the connecting pipe can switch between a conductive state and a disconnected state.

[0015] In one embodiment, the third on / off control unit is a shut-off valve.

[0016] In one embodiment, the main inlet pipe and the main outlet pipe are arranged parallel to each other and spaced apart. The connecting pipe includes a first straight segment, a second straight segment, and a curved segment. The curved segment connects the first straight segment and the second straight segment. The end of the first straight segment away from the curved segment is connected to the main inlet pipe, and the end of the second straight segment away from the curved segment is connected to the main outlet pipe.

[0017] In one embodiment, the main water inlet pipe is provided with a plurality of water inlet branch pipes, all of which are arranged at intervals along the extension direction of the main water inlet pipe; and / or

[0018] The main water outlet pipe is provided with multiple branch water outlet pipes, and all the branch water outlet pipes are arranged at intervals along the extension direction of the main water outlet pipe.

[0019] A hydrogen production rectifier, comprising the aforementioned liquid cooling system.

[0020] The aforementioned liquid cooling system, with its inlet pipeline including at least one inlet branch pipe and outlet pipeline including at least one outlet branch pipe, and each branch pipe's flow rate adjustable independently, allows for easy maintenance of specific inlet or outlet branches. This means that only the flow rate of the branch pipe requiring maintenance can be reduced to zero, while other pipes continue operating normally, effectively lowering maintenance costs. Furthermore, the connecting pipes between the main inlet and outlet pipelines, switching between on and off states, allow for efficient wastewater drainage. Simply reduce the flow rate of all inlet and outlet branch pipes to zero and switch the connecting pipes to the on state, allowing wastewater from the main inlet pipeline to drain directly from the main outlet pipeline without passing through cooling devices, thus preventing incomplete drainage of the inlet pipeline. Additionally, different cooling zones require different temperatures; adjusting the flow rates of the corresponding inlet and outlet branch pipes is sufficient without affecting the temperature of other zones. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a partial structural schematic diagram of a liquid cooling system according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Liquid cooling system; 120. Water inlet pipe; 121. Main water inlet pipe; 123. Branch water inlet pipe; 125. First branch hose; 127. First on / off control unit; 140. Water outlet pipe; 141. Main water outlet pipe; 143. Branch water outlet pipe; 145. Second branch hose; 147. Second on / off control unit; 160. Connecting pipe; 161. First straight section; 163. Second straight section; 165. Bend section; 180. Third on / off control unit. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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 application 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 application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] See Figure 1 This application provides a hydrogen production rectifier, including a liquid cooling system 100 for heat dissipation and cooling. It is understood that in other embodiments, the liquid cooling system 100 may also be applied to other devices, and this is not limited thereto.

[0033] As described in the background section, in existing liquid cooling systems used in hydrogen production rectifiers, the inlet and outlet water pipes are connected to the cooling device via branch pipes. The liquid cooling water supplied by the inlet pipe can only be discharged from the outlet pipe after passing through the cooling device. This configuration results in numerous branch pipes in the liquid cooling system, all connected to either the inlet or outlet pipes. If a branch pipe malfunctions, the entire inlet pipe must be shut off for repair. Furthermore, because the drain outlet of the inlet pipe is located at the end of the inlet pipe and above its lowest point, water at the bottom of the inlet pipe cannot be completely drained, leading to incomplete drainage.

[0034] The liquid cooling system 100 includes interconnected cooling devices (not shown), an inlet pipe 120, an outlet pipe 140, and a connecting pipe 160. Cooling water enters the cooling device through the inlet pipe 120, undergoes heat exchange within the cooling device, and then flows out through the outlet pipe 140. The connecting pipe 160 connects the inlet pipe 120 and the outlet pipe 140, allowing wastewater in the inlet pipe 120 to be directly discharged from the outlet pipe 140 through the connecting pipe 160.

[0035] The cooling device includes a water-cooled radiator and a water-cooled copper busbar, used to cool the components of the rectifier. The water inlet pipe 120 includes a main water inlet pipe 121 and at least one branch water inlet pipe 123. One end of each branch water inlet pipe 123 is connected to the side wall of the main water inlet pipe 121, and the other end of each branch water inlet pipe 123 is connected to the water inlet of the cooling device. The flow rate of each branch water inlet pipe 123 is adjustable.

[0036] The water outlet pipe 140 includes a main water outlet pipe 141 and at least one branch water outlet pipe 143. One end of each branch water outlet pipe 143 is connected to the side wall of the main water outlet pipe 141, and the other end of the branch water outlet pipe 143 is connected to the water outlet of the cooling device. The flow rate of each branch water outlet pipe 143 is adjustable.

[0037] The connecting pipe 160 is connected between the main inlet pipe 121 and the main outlet pipe 141, and the connecting pipe 160 can switch between the on state and the off state.

[0038] Thus, since the inlet pipe 120 includes at least one inlet branch pipe 123 and the outlet pipe 140 includes at least one outlet branch pipe 143, and the flow rate of each inlet branch pipe 123 and outlet branch pipe 143 can be adjusted individually, when it is necessary to repair a certain inlet branch pipe 123 or outlet branch pipe 143, the flow rate of the inlet branch pipe 123 or outlet branch pipe 143 to be repaired can be adjusted to zero, while other pipes can still work normally, thereby effectively reducing the maintenance cost of the liquid cooling system 100.

[0039] Furthermore, since the connecting pipe 160 connects the main inlet pipe 121 and the main outlet pipe 141, and the connecting pipe 160 can switch between a conducting state and a disconnected state, when sewage needs to be discharged, it is only necessary to adjust the flow rate of all inlet branch pipes 123 and outlet branch pipes 143 to zero and switch the connecting pipe 160 to the conducting state. This allows the sewage in the main inlet pipe 121 to be discharged directly from the main outlet pipe 141 through the connecting pipe 160, without needing to pass through cooling devices or other structures. This effectively avoids the problem of sewage not being completely discharged from the inlet pipe 120. In addition, when different cooling zones have different temperature requirements, the flow rate of the corresponding inlet branch pipes 123 and outlet branch pipes 143 can be adjusted without affecting the temperature of other zones.

[0040] Please continue reading. Figure 1In some embodiments, the main inlet pipe 121 and the main outlet pipe 141 are arranged parallel to each other and spaced apart. One end of the main inlet pipe 121 is connected to an external water supply device via a flange structure, and the other end of the main inlet pipe 121 is connected to a connecting pipe 160 via a flange structure. One end of the main outlet pipe 141 is connected to an external drainage device via a flange structure, and the other end of the main outlet pipe 141 is connected to the connecting pipe 160 via a flange structure.

[0041] In one specific embodiment, the main water inlet pipe 121 extends longitudinally along a straight line. The main water inlet pipe 121 is provided with multiple branch water inlet pipes 123, all of which are spaced apart along the extension direction of the main water inlet pipe 121. Each branch water inlet pipe 123 has a first branch hose 125 connected to its end furthest from the main water inlet pipe 121 for connection to a cooling device. It is understood that the number and arrangement of the branch water inlet pipes 123 are not limited and can be configured as needed to meet different requirements.

[0042] Furthermore, each inlet branch pipe 123 is equipped with a first on / off control unit 127, which is used to regulate the flow rate of the inlet branch pipe 123. Specifically, in one embodiment, the first on / off control unit 127 is an on / off valve. It is understood that the type of the first on / off control unit 127 is not limited to this, and can be configured as needed to meet different flow control requirements.

[0043] Thus, when maintenance is required on a specific inlet branch pipe 123, the first on / off control unit 127 can be shut off individually to reduce the flow rate of that inlet branch pipe 123 to zero, while the first on / off control units 127 of other inlet branch pipes 123 can remain open. When drainage is required, all first on / off control units 127 can be shut off to reduce the flow rate of all inlet branch pipes 123 to zero. Furthermore, the flow rate of the corresponding inlet branch pipe 123 can be adjusted by individually regulating the opening degree of a specific first on / off control unit 127, thereby meeting different cooling temperature requirements.

[0044] In one specific embodiment, the main water outlet pipe 141 extends longitudinally along a straight line. The main water outlet pipe 141 is provided with multiple branch water outlet pipes 143, all of which are arranged at intervals along the extension direction of the main water outlet pipe 141. Each branch water outlet pipe 143 has a second branch hose 145 connected to its end furthest from the main water outlet pipe 141 for connection to a cooling device. It is understood that the number and arrangement of the branch water outlet pipes 143 are not limited and can be configured as needed to meet different requirements.

[0045] Furthermore, each outlet branch pipe 143 is equipped with a second on / off control unit 147, which is used to regulate the flow rate of the outlet branch pipe 143. Specifically, in one embodiment, the second on / off control unit 147 is an on / off valve. It is understood that the type of second on / off control unit 147 is not limited to this, and can be configured as needed to meet different flow control requirements.

[0046] Thus, when a certain outlet branch pipe 143 needs to be repaired, the second on / off control unit 147 can be shut off to reduce the flow of that outlet branch pipe 143 to zero, while the second on / off control units 147 of other outlet branch pipes 143 can remain in the conducting state, and at the same time shut off the corresponding inlet branch pipe 123 of that outlet branch pipe 143.

[0047] When drainage is required, all second on / off control units 147 can be shut off to reduce the flow rate of all outlet branch pipes 143 to zero. Furthermore, the flow rate of the corresponding outlet branch pipe 143 can be adjusted by individually regulating the opening degree of a single second on / off control unit 147, thereby meeting different cooling temperature requirements.

[0048] Please continue reading. Figure 1 The connecting pipe 160 is U-shaped, including a first straight segment 161 extending in a straight line, a second straight segment 163 extending in a straight line, and an arc-shaped curved segment 165.

[0049] The curved section 165 connects the first straight section 161 and the second straight section 163. The end of the first straight section 161 furthest from the curved section 165 connects to the end of the main inlet pipe 121 furthest from the external water supply device. The end of the second straight section 163 furthest from the curved section 165 connects to the end of the main outlet pipe 141 furthest from the external drainage device. It is understood that the shape of the connecting pipe 160 is not limited to this and can be configured as needed to meet different connection requirements.

[0050] Furthermore, the liquid cooling system 100 also includes a third on / off control unit 180, which is located between the connecting pipe 160 and the main water inlet pipe 121. The third on / off control unit 180 can switch between an open state and a closed state, so that the connecting pipe 160 can switch between a conductive state and a disconnected state. Specifically, when the third on / off control unit 180 is in the open state, the connecting pipe 160 is in the conductive state, and the main water inlet pipe 121 and the main water outlet pipe 141 are interconnected with the connecting pipe 160 through the third on / off control unit 180. When the third on / off control unit 180 is in the closed state, the connecting pipe 160 is in the disconnected state, and the main water inlet pipe 121 and the main water outlet pipe 141 are disconnected.

[0051] In one specific embodiment, the third on / off control unit 180 is a shut-off valve. One end of the third on / off control unit 180 is connected to the main water inlet pipe 121 via a flange structure, and the other end of the third on / off control unit 180 is connected to the connecting pipe 160 via a flange structure. It is understood that the type of the third on / off control unit 180 is not limited, and it can be configured as needed to meet different on / off control requirements.

[0052] Thus, when the liquid cooling system 100 is in normal operation, the third on / off control unit 180 is in the closed state, and the water in the main inlet pipe 121 cannot enter the main outlet pipe 141 through the connecting pipe 160, but can only enter the cooling device through the inlet branch pipe 123. When drainage is required, with all the first on / off control units 127 and the second on / off control units 147 in the closed state, the third on / off control unit 180 can be switched from the closed state to the open state, so all the water in the main inlet pipe 121 enters the main outlet pipe 141 through the connecting pipe 160 and is then discharged.

[0053] The aforementioned liquid cooling system 100 and its associated hydrogen rectifier, since each inlet branch pipe 123 is individually controlled by a first on / off control unit 127, and each outlet branch pipe 143 is individually controlled by a second on / off control unit 147, allow the liquid cooling system 100 to still operate under reduced load when maintenance is required for either inlet branch pipe 123 or outlet branch pipe 143. This significantly reduces maintenance costs. Furthermore, wastewater from the inlet pipe 120 can be directly discharged from the outlet pipe 140 via the connecting pipe 160, effectively improving the system's drainage capacity. Additionally, the water flow rate of the inlet branch pipe 123 or outlet branch pipe 143 can be individually adjusted by regulating the first on / off control unit 127 or the second on / off control unit 147 to achieve different cooling effects.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A liquid cooling system, characterized in that, include: Cooling device; The water inlet pipeline includes a main water inlet pipe and at least one branch water inlet pipe. One end of each branch water inlet pipe is connected to the side wall of the main water inlet pipe, and the other end of each branch water inlet pipe is connected to the water inlet of the cooling device. The flow rate of each branch water inlet pipe is adjustable. The water outlet pipeline includes a main water outlet pipe and at least one branch water outlet pipe. One end of each branch water outlet pipe is connected to the side wall of the main water outlet pipe, and the other end of each branch water outlet pipe is connected to the water outlet of the cooling device. The flow rate of each branch water outlet pipe is adjustable. as well as A connecting pipe is provided between the main inlet pipe and the main outlet pipe, and the connecting pipe can switch between a connected state and a disconnected state.

2. The liquid cooling system according to claim 1, characterized in that, Each of the water inlet branch pipes is equipped with a first on / off control unit, which is used to adjust the flow rate of the water inlet branch pipe.

3. The liquid cooling system according to claim 2, characterized in that, The first on / off control unit is an on / off valve.

4. The liquid cooling system according to claim 1, characterized in that, Each of the outlet branch pipes is equipped with a second on / off control unit, which is used to adjust the flow rate of the outlet branch pipe.

5. The liquid cooling system according to claim 4, characterized in that, The second on / off control unit is an on / off valve.

6. The liquid cooling system according to claim 1, characterized in that, The liquid cooling system also includes a third on / off control unit, which is located between the connecting pipe and the main water inlet pipe. The third on / off control unit can switch between an open state and a closed state, so that the connecting pipe can switch between a conductive state and a disconnected state.

7. The liquid cooling system according to claim 6, characterized in that, The third on / off control unit is a shut-off valve.

8. The liquid cooling system according to claim 1, characterized in that, The main inlet pipe and the main outlet pipe are parallel and spaced apart. The connecting pipe includes a first straight section, a second straight section, and a curved section. The curved section connects the first straight section and the second straight section. The end of the first straight section away from the curved section is connected to the main inlet pipe, and the end of the second straight section away from the curved section is connected to the main outlet pipe.

9. The liquid cooling system according to claim 1, characterized in that, The main water inlet pipe is provided with multiple water inlet branch pipes, all of which are arranged at intervals along the extension direction of the main water inlet pipe; and / or The main water outlet pipe is provided with multiple branch water outlet pipes, and all the branch water outlet pipes are arranged at intervals along the extension direction of the main water outlet pipe.

10. A hydrogen production rectifier, characterized in that, Includes the liquid cooling system as described in any one of claims 1 to 9.

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