Liquid cooling system and container liquid cooling system

Abstract

The utility model provides a liquid cooling system and a container liquid cooling system, and relates to the technical field of heat exchange. The liquid cooling system comprises a power element, a heat exchanger, a liquid cooling piece, a first connecting pipeline, a second connecting pipeline, a third connecting pipeline, a bypass pipeline and a control valve. The liquid cooling part is provided with a liquid cooling cavity, and a liquid inlet and a liquid outlet which are communicated with the liquid cooling cavity; and the liquid outlet is connected with an inlet of the power element through a first connecting pipeline. An outlet of the power element is connected with an inlet of the heat exchanger through a second connecting pipeline. An outlet of the heat exchanger is connected with a liquid inlet of the liquid cooling piece through a third connecting pipeline. The power element is configured to drive the heat exchange medium to flow circularly. One end of the bypass pipeline is connected with the first connecting pipeline, and the other end of the bypass pipeline is connected with the second connecting pipeline. The control valve is arranged on the bypass pipeline. The pressure and flow of an outlet of the power element can be adjusted through the control valve, and stable and energy-saving operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling, in particular to a liquid cooling system and a container liquid cooling system. Background Art

[0002] With the development of servers and data centers, cooling technology is facing challenges. The traditional circulating air cooling method has become increasingly limited in its cooling capacity when facing high-power density servers.

[0003] To address the issue of liquid cooling for high-power-density servers, liquid cooling technologies such as indirect and immersion cooling have been proposed. Indirect cooling uses a liquid cooling plate or backplane to transfer heat from the server to a coolant, which is then dissipated by an external cooling device. Immersion cooling immerses the entire server or key components in a special insulating liquid, which absorbs the heat and dissipates it through an external cooling system.

[0004] However, existing liquid cooling technologies mostly rely on power components to drive the circulation of heat exchange media. The pressure and flow rate on the outlet side of the power components directly affect the stability of system operation. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid cooling system and a container liquid cooling system, which can adjust the pressure and flow of the power element outlet through a control valve to achieve stable and energy-saving operation.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] In a first aspect, the present invention provides a liquid cooling system, which includes a power element, a heat exchanger, a liquid cooling element, a first connecting pipe, a second connecting pipe, a third connecting pipe, a bypass pipe, and a control valve;

[0008] The liquid cooling element has a liquid cooling cavity and a liquid inlet and a liquid outlet communicated with the liquid cooling cavity;

[0009] The liquid outlet is connected to the inlet of the power element through a first connecting pipe;

[0010] The outlet of the power element is connected to the inlet of the heat exchanger through a second connecting pipe;

[0011] The outlet of the heat exchanger is connected to the liquid inlet of the liquid cooling element via a third connecting pipe;

[0012] The power element is configured to drive the heat exchange medium to circulate;

[0013] One end of the bypass pipe is connected to the first connecting pipe, and the other end of the bypass pipe is connected to the second connecting pipe;

[0014] The control valve is arranged in the bypass pipe.

[0015] In an optional embodiment, the control valve is a safety valve. When the pressure in the second connecting pipe exceeds the set safety pressure of the safety valve, the safety valve can open to connect the first connecting pipe and the second connecting pipe through the bypass pipe.

[0016] In an optional embodiment, the control valve is a regulating valve, which is used to adjust the flow of the second connecting pipeline.

[0017] In an optional embodiment, the control valve includes a safety valve and a regulating valve;

[0018] The bypass pipeline includes a main pipeline, a first branch pipeline and a second branch pipeline, one end of the first branch pipeline and the second branch pipeline are connected to the main pipeline, and the other ends of the first branch pipeline and the second branch pipeline are connected to the second connecting pipeline, and the main pipeline is connected to the first connecting pipeline;

[0019] The safety valve is installed on the first branch pipeline, and the regulating valve is installed on the second branch pipeline.

[0020] In an optional embodiment, the heat exchanger is arranged vertically, the inlet of the heat exchanger is arranged at the upper end of the heat exchanger, and the outlet of the heat exchanger is arranged near the lower end of the heat exchanger;

[0021] One end of the second connecting pipe extends toward the upper end of the heat exchanger and is connected to the inlet of the heat exchanger. The second connecting pipe is provided with a one-way valve.

[0022] In an optional embodiment, the second connecting pipe is provided with a bellows section, and the bellows section is provided close to the outlet of the power element.

[0023] In an optional embodiment, there are multiple heat exchangers, and the multiple heat exchangers are arranged side by side;

[0024] The second connecting pipeline includes a first connecting elbow, a connecting pipe section, a second connecting elbow and a distribution pipe;

[0025] The distribution pipe is arranged along the direction of the heat exchanger arrangement. The distribution pipe is provided with distribution branches corresponding to the inlets of all heat exchangers. All the distribution branches are connected to the inlets of all heat exchangers one by one. A connection port is provided near the middle of the distribution branch.

[0026] The outlet of the power element, the first connecting elbow, the bellows section, the connecting pipe section, the second connecting elbow and the connecting port are connected in sequence.

[0027] In an optional embodiment, a ball valve is connected between the connecting pipe section and the second connecting elbow.

[0028] In an optional embodiment, the first connecting pipe is provided with a coarse filter, and the third connecting pipe is provided with a fine filter.

[0029] In a second aspect, the present invention provides a container liquid cooling system, comprising a container and any one of the liquid cooling systems described in the aforementioned embodiments;

[0030] The side wall of the container is provided with an installation notch, and the heat exchanger is installed in the installation notch;

[0031] The liquid cooling system is arranged in the container, and the first connecting pipe and the third connecting pipe are both arranged near the bottom of the container, and the second connecting pipe is arranged near the top of the container.

[0032] The beneficial effects of the liquid cooling system and container liquid cooling system provided by the embodiments of the utility model are:

[0033] This application provides a bypass pipe between a second connecting pipe at the power element outlet and a first connecting pipe at the power element inlet, and installs a regulating valve in the bypass pipe. The regulating valve can adjust the pressure and flow rate at the power element outlet, thereby preventing damage to the power element due to overload. Furthermore, the control valve can be used to control the flow rate in the second connecting pipe, aligning the power element load with the heat exchange requirements, thereby achieving energy savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic structural diagram of a containerized liquid cooling system provided in an embodiment of the present utility model;

[0036] Figure 2 A schematic diagram of the structure of the liquid cooling system provided by an embodiment of the present utility model after partially hiding the heat exchanger;

[0037] Figure 3 A schematic diagram of the piping layout behind the hidden portion of the heat exchanger in the liquid cooling system provided by the embodiment of the utility model;

[0038] Figure 4 A schematic diagram of the bypass pipe arrangement of the liquid cooling system provided in an embodiment of the present utility model.

[0039] Icons: 100-Liquid cooling system; 110-Power element; 120-Heat exchanger; 130-Liquid cooling element; 131-Liquid cooling tank; 133-Liquid storage tank; 140-Second connecting pipe; 141-First connecting elbow; 142-Connecting pipe section; 143-Second connecting elbow; 144-Distribution pipe; 145-Distribution branch pipe; 146-Connection port; 150-First connecting pipe; 160-Third connecting pipe; 170 -Bypass pipe; 171-main pipe; 173-first branch pipe; 175-second branch pipe; 180-control valve; 181-safety valve; 183-regulating valve; 191-check valve; 192-bellows section; 193-ball valve; 194-coarse filter; 195-fine filter; 300-container liquid cooling system; 310-container; 311-installation notch; 313-fixing notch; 315-fan. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0042] 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, it does not require further definition or explanation in subsequent drawings.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0045] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] Example

[0047] Please refer to Figure 1 and Figure 2 This embodiment provides a container liquid cooling system 300 including a container 310 and a liquid cooling system 100. The liquid cooling system 100 is installed in the container 310, can be mass-produced in a factory, and can be conveniently carried when used later.

[0048] Please refer to Figures 2 to 4 In this embodiment, the liquid cooling system 100 includes a power element 110, a heat exchanger 120, a liquid cooling unit 130, a first connecting pipe 150, a second connecting pipe 140, a third connecting pipe 160, a bypass pipe 170, and a control valve 180. The liquid cooling unit 130 has a liquid cooling chamber and a liquid inlet and a liquid outlet communicating with the liquid cooling chamber. The liquid outlet is connected to the inlet of the power element 110 via the first connecting pipe 150. The outlet of the power element 110 is connected to the inlet of the heat exchanger 120 via the second connecting pipe 140. The outlet of the heat exchanger 120 is connected to the liquid inlet of the liquid cooling unit 130 via the third connecting pipe 160. The power element is configured to drive a heat exchange medium to circulate. One end of the bypass pipe 170 is connected to the first connecting pipe 150, and the other end of the bypass pipe 170 is connected to the second connecting pipe 140. The control valve 180 is disposed in the bypass pipe 170.

[0049] This embodiment provides a bypass pipe 170 between a second connecting pipe 140 at the outlet of the power element 110 and a first connecting pipe 150 at the inlet of the power element 110. A control valve 180 is provided in the bypass pipe 170. The control valve 180 regulates the pressure and flow rate in the second connecting pipe 140, thereby preventing damage to the power element 110 caused by overload. Furthermore, the control valve 180 controls the flow rate in the second connecting pipe 140, aligning the load of the power element 110 with the heat exchange requirements, thereby achieving energy savings.

[0050] In this embodiment, power element 110 is a pump. Of course, power element 110 can also be a compressor, hydraulic motor, or other component. Liquid cooling element 130 is a liquid cooling tank 131, into which data centers, servers, and other devices can be immersed. Of course, in some embodiments of the present application, liquid cooling element 130 can also be a liquid cooling plate, liquid cooling backplane, or the like.

[0051] Typically, insulating oil is used as the heat exchange medium. Since insulating oil has high viscous resistance when cold, when the liquid cooling system 100 is started, the cold insulating oil increases the load on the power element 110, potentially damaging the power element 110. Furthermore, blockages at certain nodes in the circulation flow path can increase the pressure in the circulation path, leading to overload and bursting of the power element 110.

[0052] In some embodiments of the present application, the control valve 180 may be replaced by a safety valve 181. When the pressure in the second connecting pipe 140 exceeds the set safety pressure of the safety valve 181, the safety valve 181 may open to connect the first connecting pipe 150 and the second connecting pipe 140 through the bypass pipe 170.

[0053] In this embodiment, the control valve 180 is set as the safety valve 181 because the safety valve 181 can automatically open to release fluid that exceeds the set pressure, thereby preventing the system pressure from exceeding the safety limit and avoiding equipment damage or safety accidents caused by excessive pressure.

[0054] When the liquid cooling system 100 is started, the high viscous resistance of the heat exchange medium can easily overload the power element 110. Furthermore, during operation of the liquid cooling system 100, the power element 110 typically operates at rated power. However, the rated power of the power element 110 typically selected during the initial design phase results in a design margin that exceeds the system's heat exchange requirements, resulting in high energy consumption.

[0055] In some embodiments of the present application, the control valve 180 is a regulating valve 183 , which is used to adjust the flow of the second connecting pipe 140 .

[0056] This embodiment incorporates a regulating valve 183 in bypass conduit 170. Upon system startup, regulating valve 183 can be opened, allowing the heat exchange medium to circulate briefly through bypass conduit 170. During this circulation, the heat exchange medium is heated before undergoing a major circulation, thereby preventing overload of power element 110. During normal operation of liquid cooling system 100, the opening of regulating valve 183 is adjusted to control the flow rate within second connecting conduit 140, aligning the flow rate with the heat exchange requirements. This reduces the load on power element 110 and, consequently, its energy consumption.

[0057] When the load on the power element 110 increases, and the flow rate of the liquid to be transported increases, the power element 110 needs to do more work to promote the flow, which will lead to an increase in the power consumption of the power element 110, and thus more electricity consumption. On the other hand, when the load on the power element 110 decreases, that is, if the flow rate decreases, the work required by the water pump will decrease, and the power consumption of the motor of the power element 110 will also decrease accordingly, which will be relatively more energy-efficient. The head refers to the height to which the water pump lifts the water. When the head increases, the water pump needs to overcome a greater gravity, which will lead to an increase in the power consumption of the motor.

[0058] Compared to installing a flow valve directly on the second connecting pipe 140, which controls the flow by intercepting the flow, this can increase the pressure at the outlet of the power element 110, thus shortening the service life of the power element. However, the arrangement of the present application does not increase the pressure at the outlet of the power element 110. Instead, it transfers excess heat exchange medium to the inlet of the power element 110 via the bypass pipe 170, thereby making the operation of the power element 110 more stable.

[0059] Regulating valve 183 can be selected ball valve 193, flow valve etc. and can regulate the valve of flow.It can be electric and also can be manual.

[0060] Please refer to Figures 2 to 4 In this embodiment, the control valve 180 includes a safety valve 181 and a regulating valve 183. The bypass pipeline 170 includes a main pipeline 171, a first branch pipeline 173, and a second branch pipeline 175. One end of each of the first branch pipeline 173 and the second branch pipeline 175 is connected to the main pipeline 171, and the other ends of each of the first branch pipeline 173 and the second branch pipeline 175 are connected to the second connecting pipeline 140. The main pipeline 171 is connected to the first connecting pipeline 150. The safety valve 181 is installed in the first branch pipeline 173, and the regulating valve 183 is installed in the second branch pipeline 175.

[0061] This embodiment employs a safety valve 181 and a regulating valve 183 in parallel within the bypass pipe 170. Safety valve 181 ensures safe operation of the liquid cooling system 100, preventing system pressure from exceeding a preset pressure. Regulating valve 183 regulates the flow rate within the second connecting pipe 140, facilitating startup and energy-efficient operation of the liquid cooling system 100 and extending the service life of the power element 110. Furthermore, the bypass pipe 170 is simplified by configuring the first branch pipe 173 and the second branch pipe 175.

[0062] Of course, in some other embodiments of the present application, the control valve 180 may also adopt an integrated valve or an electrically controlled valve, which can realize the function of the safety valve 181 and the function of the regulating valve 183.

[0063] In this embodiment, the heat exchanger 120 is disposed vertically, with the inlet of the heat exchanger 120 located at the upper end of the heat exchanger 120, and the outlet of the heat exchanger 120 located near the lower end of the heat exchanger 120. One end of the second connecting pipe 140 extends toward the upper end of the heat exchanger 120 and is connected to the inlet of the heat exchanger 120. The second connecting pipe 140 is provided with a one-way valve 191.

[0064] Since the second connecting pipe 140 extends upward and the heat exchange medium flows upward, this embodiment provides a one-way valve 191 in the second connecting pipe 140, thereby reducing the outlet pressure of the power element 110 and avoiding backflow of the second connecting pipe 140 and the heat exchange medium above.

[0065] It should be noted that the vertical arrangement of the heat exchanger 120 can be either vertically arranged or slightly tilted in the vertical direction. Of course, in other embodiments of the present application, the heat exchanger 120 can also be arranged horizontally, with the inlet and outlet of the heat exchanger 120 located on the left and right sides of the heat exchanger. The arrangement of the heat exchanger 120 and the arrangement of the inlet and outlet can be adjusted according to needs.

[0066] In this embodiment, the second connecting pipe 140 is provided with a bellows section 192 , and the bellows section 192 is disposed close to the outlet of the power element 110 .

[0067] In this embodiment, a bellows section 192 is provided in the second connecting pipe 140. The flexibility of the bellows section 192 can absorb the vibration and noise generated by the operation of the power element 110, reduce the vibration transmitted to the pipe system, and thus reduce the vibration and noise level of the entire system.

[0068] Please refer to Figures 2 to 4In this embodiment, a bellows section 192 is also provided in the middle of the first connecting pipe 150. The flexibility of the bellows section 192 can absorb the vibration and noise generated by the operation of the power element 110, reduce the vibration transmitted to the pipe system, and thus reduce the vibration and noise level of the entire system.

[0069] The bellows section 192 is also called an expansion joint or compensator, which can absorb vibration and noise, compensate for thermal expansion and contraction of the pipeline, reduce stress concentration, facilitate installation and maintenance, and absorb displacement in the pipeline system, including axial, lateral and angular displacement, thereby reducing the negative impact of stress and displacement in the pipeline system.

[0070] In this embodiment, there are multiple heat exchangers 120, and the multiple heat exchangers 120 are arranged side by side. The second connecting pipe 140 includes a first connecting elbow 141, a connecting pipe section 142, a second connecting elbow 143 and a distribution pipe 144. The distribution pipe 144 is arranged along the direction in which the heat exchangers 120 are arranged. The distribution pipe 144 is provided with a distribution branch pipe 145 corresponding to the inlet of all the heat exchangers 120. All the distribution branch pipes 145 are connected to the inlet of all the heat exchangers 120 in a one-to-one correspondence, and a connection port 146 is provided near the middle of the distribution pipe 144. The outlet of the power element 110, the first connecting elbow 141, the bellows section 192, the connecting pipe section 142, the second connecting elbow 143 and the connection port 146 are connected in sequence.

[0071] In this embodiment, the inlet of the heat exchanger 120 is located above the heat exchanger 120, while the outlet of the heat exchanger 120 is located near the bottom of the heat exchanger 120. In this way, the heat exchange medium can flow downward along the flow channel inside the heat exchanger 120 under the action of gravity, thereby reducing the load on the power element 110. This also simplifies the layout of the second connecting pipe 140.

[0072] The multiple heat exchangers 120 can be connected in parallel between the second connecting pipe 140 and the third connecting pipe 160. Alternatively, they can be connected in series between the second connecting pipe 140 and the third connecting pipe 160. The connection method between the multiple heat exchangers 120 can be selected based on heat exchange requirements. The arrangement and number of the multiple heat exchangers 120 can also be selected based on heat exchange requirements and space requirements.

[0073] In this embodiment, a ball valve 193 is connected between the connecting pipe section 142 and the second connecting elbow 143 .

[0074] In this embodiment, a ball valve 193 is provided between the connecting pipe section 142 and the second connecting elbow 143 . Thus, when the power element 110 is damaged and replaced, the ball valve 193 can be closed to prevent the heat exchange medium from flowing downward.

[0075] In this embodiment, the first connecting pipe 150 is provided with a coarse filter 194 , and the third connecting pipe 160 is provided with a fine filter 195 .

[0076] In this embodiment, by providing the fine filter 195 and the coarse filter 194 , the heat exchange medium can be filtered during the heat exchange medium circulation process.

[0077] Please refer to Figure 1 In this embodiment, the sidewall of the container 310 is provided with a mounting notch 311. The heat exchanger 120 is installed in the mounting notch 311 and is located within the container 310's accommodation space. When installed in the mounting notch 311, the heat exchanger 120 forms part of the sidewall of the container 310. The first connecting pipe 150 and the third connecting pipe 160 are both located near the bottom of the container 310, while the second connecting pipe 140 is located near the top of the container 310. The top of the container 310 is provided with a fixed notch 313, and the fan 315 is installed in the fixed notch 313 and is also located within the container 310's accommodation space.

[0078] In this embodiment, mounting notches 311 are positioned in the sidewalls of container 310, saving space within container 310 and enabling heat exchanger 120 to better exchange heat with air outside container 310. In this embodiment, first and third connecting pipes 150, 160 are positioned near the bottom wall of container 310, while second connecting pipe 140 is positioned near the top of container 310. This allows for a layered arrangement of pipes, effectively utilizing the space within container 310 and achieving a more compact layout. A fixed notch 313 is provided at the top of container 310 to accommodate fan 315. Fan 315, when in operation, draws hot air from container 310, creating negative pressure within the container. The negative pressure and suction of fan 315 allow cool air from outside to pass through the air duct of heat exchanger 120, effectively dissipating heat from heat exchanger 120.

[0079] Please refer to Figures 2 to 4 In this embodiment, there are multiple liquid cooling tanks 131, and the liquid inlets of the multiple liquid cooling tanks 131 are all connected to the third connecting pipe 160. The liquid cooling system 100 also includes a liquid storage tank 133, and the liquid outlet of the liquid cooling tank 131 is connected to the liquid storage tank 133 via a pipe. The first connecting pipe 150 is connected to the liquid storage tank 133. In other words, the first connecting pipe 150 is indirectly connected to the liquid cooling tank 131. Of course, in other embodiments of the present application, the first connecting pipe 150 can also be directly connected to the liquid outlet of the liquid cooling tank 131.

[0080] Secondly, we would like to point out that the liquid cooling system 100 provided in this application can also be used in other scenarios, such as server cooling in a data center, and is not limited to application in the container liquid cooling system 300.

[0081] In summary, the liquid cooling system 100 and container liquid cooling system 300 provided in this embodiment employ a bypass pipe 170 disposed between the second connecting pipe 140 at the outlet of the power element 110 and the first connecting pipe 150 at the inlet of the power element 110, and a regulating valve 183 is provided in the bypass pipe 170. The bypass valve can adjust the pressure and flow at the outlet of the power element 110, thereby preventing overload and damage to the power element 110. Simultaneously, the flow rate in the second connecting pipe 140 can be controlled by the control valve 180 to match the load of the power element 110 with the heat exchange requirements, thereby achieving energy savings.

[0082] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A liquid cooling system, characterized in that: The liquid cooling system (100) includes a power element (110), a heat exchanger (120), a liquid cooling element (130), a first connecting pipe (150), a second connecting pipe (140), a third connecting pipe (160), a bypass pipe (170), and a control valve (180); The liquid cooling element (130) has a liquid cooling cavity and a liquid inlet and a liquid outlet communicated with the liquid cooling cavity; The liquid outlet is connected to the inlet of the power element (110) through the first connecting pipe (150); The outlet of the power element (110) is connected to the inlet of the heat exchanger (120) via the second connecting pipe (140); The outlet of the heat exchanger (120) is connected to the liquid inlet of the liquid cooling element (130) via the third connecting pipe (160); The power element (110) is configured to drive the heat exchange medium to circulate; One end of the bypass pipe (170) is connected to the first connecting pipe (150), and the other end of the bypass pipe (170) is connected to the second connecting pipe (140); The control valve (180) is provided in the bypass pipe (170).

2. The liquid cooling system according to claim 1, characterized in that The control valve (180) is a safety valve (181). When the pressure in the second connecting pipe (140) exceeds a set safety pressure of the safety valve (181), the safety valve (181) can be opened to allow the first connecting pipe (150) and the second connecting pipe (140) to communicate through the bypass pipe (170).

3. The liquid cooling system according to claim 1, characterized in that: The control valve (180) is a regulating valve (183), and the regulating valve (183) is used to adjust the flow of the second connecting pipe (140).

4. The liquid cooling system according to claim 1, wherein: The control valve (180) includes a safety valve (181) and a regulating valve (183); The bypass pipe (170) comprises a main pipe (171), a first branch pipe (173) and a second branch pipe (175); one end of each of the first branch pipe (173) and the second branch pipe (175) is connected to the main pipe (171); and the other ends of each of the first branch pipe (173) and the second branch pipe (175) are connected to the second connecting pipe (140); and the main pipe (171) is connected to the first connecting pipe (150); The safety valve (181) is installed on the first branch pipe (173), and the regulating valve (183) is installed on the second branch pipe (175).

5. The liquid cooling system according to claim 1, characterized in that: The heat exchanger (120) is arranged vertically, the inlet of the heat exchanger (120) is arranged at the upper end of the heat exchanger (120), and the outlet of the heat exchanger (120) is arranged near the lower end of the heat exchanger (120); One end of the second connecting pipe (140) extends toward the upper end of the heat exchanger (120) and is connected to the inlet of the heat exchanger (120). The second connecting pipe (140) is provided with a one-way valve (191).

6. The liquid cooling system according to claim 5, characterized in that: The second connecting pipe (140) is provided with a bellows section (192), and the bellows section (192) is arranged close to the outlet of the power element (110).

7. The liquid cooling system according to claim 6, characterized in that: There are a plurality of heat exchangers (120), and the plurality of heat exchangers (120) are arranged side by side; The second connecting pipe (140) includes a first connecting elbow (141), a connecting pipe section (142), a second connecting elbow (143) and a distribution pipe (144); The distribution pipe (144) is arranged along the direction in which the heat exchangers (120) are arranged. The distribution pipe (144) is provided with distribution branch pipes (145) corresponding to the inlets of all the heat exchangers (120). All the distribution branch pipes (145) are connected to the inlets of all the heat exchangers (120) in a one-to-one correspondence. A connection port (146) is provided near the middle of the distribution pipe (144). The outlet of the power element (110), the first connecting elbow (141), the bellows section (192), the connecting pipe section (142), the second connecting elbow (143) and the connecting port (146) are connected in sequence.

8. The liquid cooling system according to claim 7, characterized in that: A ball valve (193) is connected between the connecting pipe section (142) and the second connecting elbow (143).

9. The liquid cooling system according to any one of claims 1 to 8, characterized in that: The first connecting pipe (150) 5 is provided with a coarse filter (194), and the third connecting pipe (160) is provided with a fine filter (195).

10. A container liquid cooling system, characterized in that: Comprising a container (310) and the liquid cooling system (100) according to any one of claims 1 to 9; The side wall of the container (310) is provided with an installation notch (311), and the heat exchanger (120) is installed in the installation notch (311); The liquid cooling system (100) is arranged in the container (310), and the first connecting pipe (150) and the third connecting pipe (160) are both arranged near the bottom of the container (310), and the second connecting pipe (140) is arranged near the top of the container (310).

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