Fluid replenishment device, liquid cooling system, and test system

Abstract

The application relates to a liquid supplementing device, a liquid cooling system and a test system. The liquid supplementing device comprises a liquid supplementing tank, a pipeline assembly, a pump assembly and a control assembly. The liquid supplementing tank is used for storing refrigerant. The pipeline assembly is used for connecting the liquid supplementing tank and a main pipeline of a cooling distribution unit. The pump assembly is arranged in the pipeline assembly. The control assembly is electrically connected to the pump assembly and is used for controlling the opening and closing of the pump assembly to control the opening and closing of the pipeline assembly. The liquid supplementing device further comprises a liquid supplementing state and a recovery state. When the liquid supplementing device is in the liquid supplementing state, the control assembly controls the pump assembly to be opened to drive the refrigerant in the liquid supplementing tank to flow into the main pipeline. When the liquid supplementing device is in the recovery state, the control assembly controls the pump assembly to be opened to drive the refrigerant in the main pipeline to flow into the liquid supplementing tank. The liquid supplementing device can adjust the refrigerant in the pipeline in real time, so that the pressure in the pipeline is maintained in a relatively stable state, thereby ensuring the normal operation of the liquid cooling system and the use experience of a user.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and more particularly to a liquid replenishment device, a liquid cooling system, and a testing system. Background Technology

[0002] Cooling Distribution Units (CDUs) are thermal management devices based on liquid cooling technology. Their core task is to transfer the heat generated in the data center to the cooling medium, and then dissipate the heat through the cooling system. As a core component of the liquid cooling system, they undertake key functions such as heat exchange between the cold source and IT equipment, flow distribution, and parameter monitoring. Their reliability directly affects the stability and energy efficiency of data center operation.

[0003] In existing designs, whether it is a unit system with a CDU or a test system, once a refrigerant leak occurs, it cannot be replenished in time. The only solution is to shut down the unit and add refrigerant, which is cumbersome and affects the operation of the unit and the testing of the test system. Utility Model Content

[0004] This application provides a liquid replenishment device, a liquid cooling system, and a testing system to address some or all of the shortcomings in the related technologies.

[0005] The refrigerant replenishment device of this application includes a refrigerant replenishment tank, a piping assembly, a pump assembly, and a control assembly. The refrigerant replenishment tank stores refrigerant. The piping assembly connects the refrigerant replenishment tank to the main pipeline of the cooling distribution unit. The pump assembly is disposed within the piping assembly. The control assembly is electrically connected to the pump assembly and controls the opening and closing of the pump assembly to control the on / off state of the piping assembly. The refrigerant replenishment device also includes a replenishment state and a recovery state. When the refrigerant replenishment device is in the replenishment state, the control assembly controls the pump assembly to open, driving the refrigerant in the refrigerant replenishment tank into the main pipeline; when the refrigerant replenishment device is in the recovery state, the control assembly controls the pump assembly to open, driving the refrigerant in the main pipeline into the refrigerant replenishment tank.

[0006] Optionally, the replenishment device further includes a valve assembly electrically connected to the control component, the valve assembly being disposed on the piping assembly. The piping assembly includes a replenishment pipeline and a recovery pipeline, the replenishment pipeline connecting the input end of the pump assembly to the replenishment tank. The recovery pipeline connects the output end of the pump assembly to the replenishment tank. When the replenishment device is in replenishment mode, the control component controls the replenishment pipeline to be open and the recovery pipeline to be closed via the valve assembly; when the replenishment device is in recovery mode, the control component controls the recovery pipeline to be open and the replenishment pipeline to be closed via the valve assembly.

[0007] Optionally, the replenishment pipeline includes a first replenishment pipe and a second replenishment pipe. The first replenishment pipe connects the replenishment tank to the input end of the pump assembly, and the second replenishment pipe connects the output end of the pump assembly to the main pipeline. The recovery pipeline includes a first recovery pipe and a second recovery pipe. The first recovery pipe connects the replenishment tank to the output end of the pump assembly, and the second recovery pipe connects the input end of the pump assembly to the main pipeline. The valve assembly includes a first valve disposed in the first replenishment pipe, a second valve disposed in the second replenishment pipe, a third valve disposed in the first recovery pipe, and a fourth valve disposed in the second recovery pipe. When the replenishment device is in replenishment mode, the control component controls the first and second valves to open, and the third and fourth valves to close; when the replenishment device is in recovery mode, the control component controls the first and second valves to close, and the third and fourth valves to open.

[0008] Optionally, the piping assembly further includes a manifold, one end of which is connected to the end of the second replenishment pipe and the second recovery pipe furthest from the pump assembly, and the other end of which is connected to the main pipe. The valve assembly further includes a fifth valve disposed on the manifold.

[0009] Optionally, the fluid replenishment device further includes an exhaust valve electrically connected to the control component, the exhaust valve enabling or disabling connection of the main pipeline to the outside. The fluid replenishment device also includes an exhaust state; when the fluid replenishment device is in the exhaust state, the control component controls the exhaust valve to open.

[0010] Optionally, the fluid replenishment device further includes an expansion tank connected to the main pipeline, the expansion tank being used to compensate for volume changes in the fluid in the main pipeline.

[0011] Optionally, the replenishment device further includes a pressure sensor electrically connected to the control component, and the replenishment device also includes a venting state. The pressure sensor is used to detect the pressure information of the main pipeline, and the control component controls the replenishment device to switch between a replenishment state, a recovery state, and a venting state based on the pressure information.

[0012] Optionally, the fluid replenishment device further includes a flow sensor electrically connected to the control component. The flow sensor is used to detect the flow information of the main pipeline.

[0013] The liquid cooling system of this application includes a cooling distribution unit, an air conditioning unit, and a liquid replenishment device as described above. The cooling distribution unit includes a main pipeline connecting the cooling distribution unit to the air conditioning unit, and the liquid replenishment device is connected to the main pipeline.

[0014] Optionally, the fluid replenishment device further includes a pressure sensor electrically connected to the control component. The pressure sensor is used to detect the hydraulic and pneumatic pressure information of the main pipeline. When the pressure sensor detects that the hydraulic information is lower than a minimum hydraulic threshold, the control component controls the fluid replenishment device to enter a fluid replenishment state; when the pressure sensor detects that the hydraulic information is higher than a maximum hydraulic threshold, the control component controls the fluid replenishment device to enter a recovery state; when the pressure sensor detects that the pneumatic pressure is higher than a maximum pneumatic pressure threshold, the control component controls the fluid replenishment device to enter a venting state.

[0015] The testing system of this application includes a cooling distribution unit, a testing device, and a liquid replenishment device as described above. The cooling distribution unit includes a main pipeline connecting the cooling distribution unit to the testing device; the liquid replenishment device is connected to the main pipeline.

[0016] Optionally, the fluid replenishment device further includes a pressure sensor electrically connected to the control component. The pressure sensor is used to detect the hydraulic and pneumatic pressure information of the main pipeline. When the pressure sensor detects that the hydraulic information is lower than a minimum hydraulic threshold, the control component controls the fluid replenishment device to enter a fluid replenishment state; when the pressure sensor detects that the hydraulic information is higher than a maximum hydraulic threshold, the control component controls the fluid replenishment device to enter a recovery state; when the pressure sensor detects that the pneumatic pressure is higher than a maximum pneumatic pressure threshold, the control component controls the fluid replenishment device to enter a venting state.

[0017] Optionally, the replenishment device further includes a flow sensor electrically connected to the control component. The flow sensor is used to detect the flow information of the main pipeline. The control component controls the replenishment device to enter or exit the venting state based on the flow information.

[0018] The technical solutions provided by the embodiments of this application may include the following beneficial effects: As can be seen from the above embodiments, the liquid replenishment device of this application is designed to adjust the refrigerant in the pipeline in real time according to the pressure in the main pipeline, thereby maintaining the pressure in the pipeline in a relatively stable state, so as to ensure the normal operation of the liquid cooling system and guarantee the user's experience.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a partial structural diagram of a liquid cooling system in one embodiment of this application; Figure 2 This is a simplified structural diagram of the liquid cooling system's liquid replenishment device in a liquid replenishment state according to one embodiment of this application; Figure 3 This is a simplified structural diagram of the liquid replenishment device of the liquid cooling system in a recovery state according to one embodiment of this application; Figure 4 This is a simplified structural diagram of the liquid replenishment device of the liquid cooling system in the venting state according to one embodiment of this application; Figure 5 This is a simplified structural diagram of a test system in one embodiment of this application.

[0022] Explanation of reference numerals in the attached figures: 100. Liquid cooling system; 200. Testing system; 1. Cooling distribution unit; 2. Liquid replenishment device; 21. Liquid replenishment tank; 22. Piping assembly; 221. Liquid replenishment pipeline; 221a. First liquid replenishment pipe; 221b. Second liquid replenishment pipe; 222. Recovery pipeline; 222a. First recovery pipe; 222b. Second recovery pipe; 223. Merging pipeline; 23. Pump assembly; 24. Valve assembly; 241. First valve; 242. Second valve; 243. Third valve; 244. Fourth valve; 245. Fifth valve; 25. Exhaust valve; 26. Expansion tank; 27. Pressure sensor; 28. Flow sensor; 3. Air conditioning unit; 4. Testing device; 41. Heat pump unit; 411. Condenser; 412. Evaporator; 42. Constant temperature water tank; 43. Plate heat exchanger; 44a. Primary side loop; 44b. Secondary side loop. Detailed Implementation

[0023] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0025] like Figure 1 As shown, the liquid cooling system 100 of this application includes a cooling distribution unit 1, an air conditioning unit 3, and a liquid replenishment device 2 as described above. The cooling distribution unit 1 includes a main pipeline that connects the cooling distribution unit 1 to the air conditioning unit 3, and the liquid replenishment device 2 is connected to the main pipeline.

[0026] The liquid cooling system 100 of this application cleverly establishes a dynamic liquid replenishment device between the cooling distribution unit 1 and the air conditioning unit 3 through the design of the liquid replenishment device 2. This allows the liquid cooling system 100 to be replenished or recovered promptly during actual operation, even in cases of minor refrigerant leakage or increased pressure within the pipes, without requiring shutdown for maintenance. This design ensures the integrity and continuity of the liquid cooling system 100 during actual operation, guaranteeing system efficiency while avoiding mid-operational maintenance shutdowns, effectively improving the user experience.

[0027] In an optional embodiment, the refrigerant replenishment device 2 includes a refrigerant replenishment tank 21, a piping assembly 22, a pump assembly 23, and a control assembly. The refrigerant replenishment tank 21 is used to store refrigerant. The piping assembly 22 is used to connect the refrigerant replenishment tank 21 to the main pipeline of the cooling distribution unit 1. The pump assembly 23 is disposed on the piping assembly 22. The control assembly is electrically connected to the pump assembly 23 and is used to control the opening and closing of the pump assembly 23 to control the on / off state of the piping assembly 22.

[0028] The refrigerant replenishment device 2 of this application connects the refrigerant replenishment tank 21 to the main pipeline via the pipeline assembly 22, and controls the opening and closing of the pump assembly 23 via the control assembly, thereby replenishing the refrigerant in the refrigerant replenishment tank 21 to the main pipeline, or recovering the refrigerant in the main pipeline to the refrigerant replenishment tank 21. This design ensures the smooth operation of the liquid cooling system 100 and avoids unit shutdown due to minor refrigerant leakage.

[0029] Specifically, the liquid replenishment device 2 includes a replenishment state and a recovery state. When the liquid replenishment device 2 is in the replenishment state, the control component controls the pump assembly 23 to start, driving the refrigerant in the replenishment tank 21 into the main pipeline. When the liquid replenishment device 2 is in the recovery state, the control component controls the pump assembly 23 to start, driving the refrigerant in the main pipeline into the replenishment tank 21. Therefore, the design of the liquid replenishment device 2 in this application can adjust the refrigerant in the pipeline in real time according to the pressure in the main pipeline, thereby maintaining the pressure in the pipeline at a relatively stable state to ensure the normal operation of the liquid cooling system 100 and guarantee the user's experience.

[0030] It should be noted that in practical applications, pump assembly 23 can be a bidirectional pump, so that pipeline assembly 22 only needs to connect the two ends of the bidirectional pump to the replenishment tank 21 and the main pipeline respectively. During the operation of the bidirectional pump, no pipeline adjustment is required, effectively simplifying the overall structure of the replenishment device 2. Alternatively, a unidirectional pump can be used as pump assembly 23, splitting pipeline assembly 22 into inlet and outlet lines. This design reduces the reversing operation of pump assembly 23, requiring only pumping fluid in a single direction, reducing pump reversing time and further improving the reliability of the replenishment device 2. Therefore, this application does not impose any limitations on this.

[0031] In the optional embodiments described in this application, the pump assembly 23 is a unidirectional pump, and the replenishment device 2 also includes a valve assembly 24 electrically connected to the control assembly, which is disposed in the pipeline assembly 22. The pipeline assembly 22 includes a replenishment pipeline 221 and a recovery pipeline 222. The replenishment pipeline 221 connects the input end of the pump assembly 23 to the replenishment tank 21. The recovery pipeline 222 connects the output end of the pump assembly 23 to the replenishment tank 21. When the replenishment device 2 is in the replenishment state, the control assembly controls the replenishment pipeline 221 to be open and the recovery pipeline 222 to be closed via the valve assembly 24; when the replenishment device 2 is in the recovery state, the control assembly controls the recovery pipeline 222 to be open and the replenishment pipeline 221 to be closed via the valve assembly 24.

[0032] As can be seen, this application divides the pipeline assembly 22 into a replenishment pipeline 221 and a recovery pipeline 222, and designs a valve assembly 24 on the pipeline. By controlling the opening and closing of the valve assembly 24, the on / off state of the two pipelines can be controlled. This solution does not require changing the outlet direction of the pump assembly 23, but only requires controlling the opening and closing of the valve assembly 24. This effectively reduces the switching time between the replenishment device 2 and the recovery state, and further avoids the interference between replenishment and recovery. This improves the reliability of the replenishment device 2 and the overall safety and stability of the liquid cooling system 100.

[0033] Continue to refer to Figure 1 As shown, in an optional embodiment, the replenishment line 221 includes a first replenishment line 221a and a second replenishment line 221b. The first replenishment line 221a connects the replenishment tank 21 to the input end of the pump assembly 23, and the second replenishment line 221b connects the output end of the pump assembly 23 to the main pipeline. The recovery line 222 includes a first recovery line 222a and a second recovery line 222b. The first recovery line 222a connects the replenishment tank 21 to the output end of the pump assembly 23, and the second recovery line 222b connects the input end of the pump assembly 23 to the main pipeline. The valve assembly 24 includes a first valve 241 disposed in the first replenishment line 221a, a second valve 242 disposed in the second replenishment line 221b, a third valve 243 disposed in the first recovery line 222a, and a fourth valve 244 disposed in the second recovery line 222b.

[0034] This application divides the liquid replenishment pipeline 221 and the recovery pipeline 222 into a first liquid replenishment pipeline 221a, a second liquid replenishment pipeline 221b, a first recovery pipeline 222a, and a second recovery pipeline 222b, respectively, and sets valves on each pipeline for control. This design further improves the control accuracy of the liquid replenishment device 2 in various states, ensures the reliability of the liquid replenishment process and the recovery process, and avoids the situation where the pump assembly 23 is accidentally opened, causing a sudden change in the refrigerant flow in the main pipeline, thereby effectively improving the stability and safety of the liquid cooling system 100.

[0035] Specifically, such as Figure 2 As shown in the diagram, red lines indicate connected pipes, and black lines indicate disconnected pipes. When the liquid cooling system 100 detects a decrease in refrigerant flow in the main pipe, the liquid replenishment device 2 enters the liquid replenishment state. At this time, the control component controls the first valve 241 and the second valve 242 to open, and the third valve 243 and the fourth valve 244 to close. This ensures that only the first liquid replenishment pipe 221a and the second liquid replenishment pipe 221b are connected (e.g., ...). Figure 2 (As shown by the red line in the middle), while the first recovery pipe 222a and the second recovery pipe 222b are both disconnected, thus ensuring that the pump assembly 23 can only pump refrigerant from the replenishment tank 21 into the main pipeline (as shown by the red line in the middle). Figure 2(As shown by the purple dashed arrow in the middle), thus enabling the liquid replenishment operation and ensuring the refrigerant flow in the main pipeline.

[0036] like Figure 3 As shown, when the liquid cooling system 100 detects excess refrigerant in the main pipeline, the liquid replenishment device 2 enters the recovery state. The control component controls the first valve 241 and the second valve 242 to close, and the third valve 243 and the fourth valve 244 to open. In this way, only the first recovery pipe 222a and the second recovery pipe 222b are connected (e.g., Figure 3 (As shown by the red line in the middle), while the first replenishment pipe 221a and the second replenishment pipe 221b are both in the disconnected state, this ensures that the pump assembly 23 can only pump refrigerant into the replenishment tank 21 from the main pipeline during operation, thereby realizing the recovery of excess refrigerant (such as...). Figure 3 (As indicated by the purple dashed arrow in the middle), ensure the refrigerant flow in the main pipeline.

[0037] In an optional embodiment, the replenishment line 221 further includes a collection line 223, one end of which is connected to the end of the second replenishment line 221b and the second recovery line 222b away from the pump assembly 23, and the other end of the collection line 223 is used to connect to the main line. The valve assembly 24 further includes a fifth valve 245 disposed on the collection line 223.

[0038] The liquid replenishment device 2 of this application, through the design of the connecting pipe 223 and the fifth valve 245, provides a confluence channel for the liquid replenishment pipe 221 and the recovery pipe 222. By controlling the opening and closing of the fifth valve 245, the on / off state of the liquid replenishment pipe 221 and the recovery pipe 222 can be controlled simultaneously. Therefore, this design provides a layer of protection for the entire piping assembly 22 of the liquid replenishment device 2. When the main pipe does not require liquid replenishment or recovery operations, the piping assembly 22 of the liquid replenishment device 2 can be completely disconnected from the main pipe, thereby preventing the pump assembly 23 from accidentally opening and affecting the refrigerant flow in the main pipe. This effectively improves the reliability and safety of the liquid replenishment device 2 in practical application scenarios, ensuring the user experience when using the liquid cooling system 100.

[0039] In an optional embodiment, the replenishment device 2 further includes an exhaust valve 25 electrically connected to the control component, the exhaust valve 25 providing intermittent connection between the main pipeline and the outside. The replenishment device 2 also includes an exhaust state, when the replenishment device 2 is in the exhaust state, the control component controls the exhaust valve 25 to open.

[0040] like Figure 4As shown, when the liquid cooling system 100 detects an abnormal increase in gas pressure in the main pipeline, the liquid replenishment device 2 enters the venting state. At this time, as described above, the fifth valve 245 can control the opening and closing of the main pipeline 223, thereby completely disconnecting the entire pipeline assembly 22 and the liquid replenishment tank 21 from the main pipeline, and controlling the vent valve 25 to open. In this way, the liquid cooling system 100 can reduce the gas pressure in the main pipeline without affecting the refrigerant, so that the flow of refrigerant is not interfered with, ensuring the smooth operation of the liquid cooling system 100.

[0041] In an optional embodiment, the fluid replenishment device 2 further includes an expansion tank 26 connected to the main pipeline, the expansion tank 26 being used to compensate for volume changes of the fluid in the main pipeline.

[0042] It should be noted that in the actual operating scenario of the liquid cooling system 100, in addition to changes in flow rate, the refrigerant fluid may also experience changes in volume due to temperature variations. Therefore, this application utilizes the design of the expansion tank 26 to compensate for these volume changes in the main pipeline. Furthermore, similar to the replenishment tank 21, this application designs a separate valve for the expansion tank 26 to control the connection between the expansion tank 26 and the main pipeline. For example, when the fluid volume in the pipeline changes, this valve opens to connect the expansion tank 26 to the main pipeline, allowing refrigerant fluid to flow into or from the expansion tank 26 to replenish the main pipeline. This dynamically compensates for changes in the fluid volume in the main pipeline, ensuring the normal operation of the liquid cooling system 100.

[0043] In an optional embodiment, the replenishment device 2 further includes a pressure sensor 27 electrically connected to the control component. The pressure sensor 27 is used to detect the pressure information of the main pipeline, and the control component controls the replenishment device 2 to switch between replenishment state, recovery state, and venting state based on the pressure information.

[0044] The liquid replenishment device 2 of this application detects the pressure information of the main pipeline through the pressure sensor 27, and then controls each valve, pump assembly 23, etc. in real time according to the pressure information. This enables timely operation such as replenishing, recovering or venting the main pipeline. This design further improves the control accuracy and response speed of the liquid replenishment device 2, making the operation of the liquid cooling system 100 smoother and the user experience better.

[0045] Specifically, pressure sensor 27 is used to detect the hydraulic and pneumatic pressure information of the main pipeline. When pressure sensor 27 detects that the hydraulic pressure is below the minimum hydraulic threshold, the control component controls the replenishment device 2 to enter the replenishment state, that is, the pump assembly 23 replenishes the refrigerant fluid in the replenishment tank 21 into the main pipeline. When pressure sensor 27 detects that the hydraulic pressure is above the maximum hydraulic threshold, the control component controls the replenishment device 2 to enter the recovery state, that is, the pump assembly 23 stores the excess refrigerant fluid in the main pipeline into the replenishment tank 21. And when pressure sensor 27 detects that the pneumatic pressure is above the maximum pneumatic threshold, the control component controls the replenishment device 2 to enter the venting state, that is, the vent valve 25 is opened to depressurize the main pipeline.

[0046] It is evident that the design of the pressure sensor 27 in this application improves the detection and control accuracy of the liquid replenishment device 2, enhances the response speed in various states, optimizes the operation process of the liquid cooling system 100, and improves the user experience.

[0047] Of course, the refrigerant replenishment device 2 can also be designed with a flow sensor 28 electrically connected to the control components to detect the flow information of the main pipeline. That is, by detecting the flow information of the refrigerant in the main pipeline, the refrigerant replenishment device 2 can be controlled to replenish or recover refrigerant. Therefore, this application does not impose any limitations on this.

[0048] In addition, such as Figure 5 As shown, this application also provides a test system 200, which includes a cooling distribution unit 1, a test device 4, and a liquid replenishment device 2 as described above. Similarly, the cooling distribution unit 1 includes a main pipeline that connects the cooling distribution unit 1 to the test device 4, and the liquid replenishment device 2 is connected to the main pipeline.

[0049] In practical applications, the cooling distribution unit 1 plays a crucial role in heat exchange, flow distribution, and parameter monitoring between the cold source and IT equipment. Its reliability directly impacts the stability and energy efficiency of the data center. Therefore, before being applied to the liquid cooling system 100, the cooling distribution unit 1 undergoes extensive non-stop testing to verify its ability to maintain excellent performance under prolonged operation. However, during this testing process, minor refrigerant leaks may occur, requiring the test system 200 to be shut down for maintenance and retesting. This not only increases operational complexity and time costs but also renders previously measured data unusable, resulting in resource waste.

[0050] Therefore, in such Figure 5In the illustrated embodiment, the test system 200 further includes a condenser 411, an evaporator 412, a constant-temperature water tank 42 connected to a cold source, and a plate heat exchanger 43. The condenser 411 and evaporator 412 constitute a heat pump unit 41. The blue line in the figure represents the primary side loop 44a of the test system 200, in which a lower-temperature fluid flows. The red line represents the secondary side loop 44b of the test system 200, in which a higher-temperature fluid flows. The test system 200 of this application, through the design of the liquid replenishment device 2, can achieve dynamic liquid replenishment and recovery. This allows the test system 200 to perform timely liquid replenishment or recovery operations through the liquid replenishment device 2 even in the event of minor refrigerant leakage or increased pressure in the pipes during testing, without requiring shutdown maintenance. Therefore, this design ensures the integrity and continuity of the liquid cooling system 100 during actual operation, ensuring system efficiency while avoiding mid-operational maintenance shutdowns, effectively improving the user experience.

[0051] It should be noted that during the performance testing of the cooling distribution unit 1, air resistance in the main pipeline can cause refrigerant flow fluctuations and distortion of thermal performance data. In some optional embodiments, the liquid replenishment device 2 may also include a pressure sensor 27 electrically connected to the control components, thereby detecting hydraulic and air pressure information in the main pipeline. In other optional embodiments, such as those described in this application... Figure 5 In the illustrated embodiment, the replenishment device 2 may also be equipped with a flow sensor 28 electrically connected to the control component. The flow sensor 28 is used to detect the flow information of the main pipeline. The control component controls the replenishment device 2 to enter or exit the venting state based on the flow information.

[0052] Similar to the liquid cooling system 100, when the liquid cooling system 100 detects that the hydraulic pressure information is lower than the minimum hydraulic pressure threshold through the pressure sensor 27, the control component controls the replenishing device 2 to enter the replenishing state. When the liquid cooling system 100 detects that the hydraulic pressure information is higher than the maximum hydraulic pressure threshold through the pressure sensor 27, the control component controls the replenishing device 2 to enter the recovery state. When the liquid cooling system 100 detects that the gas pressure information is higher than the maximum gas pressure threshold through the pressure sensor 27, the control component controls the replenishing device 2 to enter the venting state. This not only dynamically adjusts the refrigerant flow rate in the main pipeline but also allows for real-time gas venting, ensuring stable refrigerant flow and reducing errors in thermal performance testing.

[0053] Furthermore, the design of the testing system 200 allows the fluid in the main pipeline of the cooling distribution unit 1 to be recovered and stored in the replenishment tank 21 via the replenishment device 2 after the test. This facilitates the operator to filter and purify this fluid before reinjecting it into the system, achieving refrigerant recycling. Therefore, the design of the testing system 200 in this application can further improve refrigerant utilization and reduce testing costs.

[0054] It should be noted that the technical solutions or features described in the above embodiments can be combined or complemented by each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A fluid replenishment device, characterized in that, include: A refrigerant tank is used to store refrigerant. Piping assembly for connecting the main pipeline of the replenishment tank and the cooling distribution unit; Pump assembly, disposed within the piping assembly; as well as A control component is electrically connected to the pump assembly and is used to control the opening and closing of the pump assembly in order to control the on / off state of the pipeline assembly. The replenishment device further includes a replenishment state and a recovery state: When the liquid replenishment device is in the liquid replenishment state, the control component controls the pump assembly to turn on, so as to drive the refrigerant in the liquid replenishment tank to flow into the main pipeline; When the refrigerant replenishment device is in the recovery state, the control component controls the pump assembly to turn on, so as to drive the refrigerant in the main pipeline to flow into the refrigerant replenishment tank.

2. The fluid replenishment device according to claim 1, characterized in that, The replenishment device further includes a valve assembly electrically connected to the control component, the valve assembly being disposed on the pipeline assembly; the pipeline assembly includes a replenishment pipeline and a recovery pipeline; the replenishment pipeline connects the input end of the pump assembly to the replenishment tank; the recovery pipeline connects the output end of the pump assembly to the replenishment tank; When the replenishment device is in the replenishment state, the control component controls the replenishment pipeline to be connected and the recovery pipeline to be closed through the valve assembly; when the replenishment device is in the recovery state, the control component controls the recovery pipeline to be connected and the replenishment pipeline to be closed through the valve assembly.

3. The fluid replenishment device according to claim 2, characterized in that, The replenishment pipeline includes a first replenishment pipe and a second replenishment pipe. The first replenishment pipe connects the replenishment tank to the input end of the pump assembly, and the second replenishment pipe connects the output end of the pump assembly to the main pipeline. The recovery pipeline includes a first recovery pipe and a second recovery pipe. The first recovery pipe connects the replenishment tank to the output end of the pump assembly, and the second recovery pipe connects the input end of the pump assembly to the main pipeline. The valve assembly includes a first valve disposed on the first replenishment pipe, a second valve disposed on the second replenishment pipe, a third valve disposed on the first recovery pipe, and a fourth valve disposed on the second recovery pipe; when the replenishment device is in the replenishment state, the control component controls the first valve and the second valve to open, and the third valve and the fourth valve to close; when the replenishment device is in the recovery state, the control component controls the first valve and the second valve to close, and the third valve and the fourth valve to open.

4. The fluid replenishment device according to claim 3, characterized in that, The piping assembly also includes a main pipe, one end of which is connected to the end of the second replenishment pipe and the second recovery pipe away from the pump assembly; the other end of the main pipe is used to connect to the main pipe. The valve assembly also includes a fifth valve disposed in the main pipeline.

5. The fluid replenishment device according to claim 1, characterized in that, The fluid replenishment device also includes an exhaust valve electrically connected to the control component, the exhaust valve connecting the main pipeline to the outside in a way that allows it to be switched on or off; the fluid replenishment device also includes an exhaust state; when the fluid replenishment device is in the exhaust state, the control component controls the exhaust valve to open.

6. The fluid replenishment device according to claim 1, characterized in that, The fluid replenishment device also includes an expansion tank connected to the main pipeline, which is used to compensate for volume changes in the fluid in the main pipeline.

7. The fluid replenishment device according to claim 1, characterized in that, The fluid replenishment device also includes a pressure sensor electrically connected to the control component; the fluid replenishment device also includes an venting state; the pressure sensor is used to detect the pressure information of the main pipeline, and the control component controls the fluid replenishment device to switch between a fluid replenishment state, a recovery state, and a venting state based on the pressure information.

8. The fluid replenishment device according to claim 1, characterized in that, The fluid replenishment device also includes a flow sensor electrically connected to the control component; the flow sensor is used to detect the flow information of the main pipeline.

9. A liquid cooling system, characterized in that, It includes a cooling distribution unit, an air conditioning unit, and a liquid replenishment device as described in any one of claims 1 to 8; the cooling distribution unit includes a main pipeline that connects the cooling distribution unit to the air conditioning unit; the liquid replenishment device is connected to the main pipeline.

10. The liquid cooling system according to claim 9, characterized in that, The fluid replenishment device also includes a pressure sensor electrically connected to the control component. The pressure sensor is used to detect the hydraulic and pneumatic information of the main pipeline. When the pressure sensor detects that the hydraulic information is lower than the minimum hydraulic threshold, the control component controls the fluid replenishment device to enter the fluid replenishment state. When the pressure sensor detects that the hydraulic information is higher than the maximum hydraulic threshold, the control component controls the fluid replenishment device to enter the recovery state. When the pressure sensor detects that the pneumatic information is higher than the maximum pneumatic threshold, the control component controls the fluid replenishment device to enter the venting state.

11. A testing system, characterized in that, It includes a cooling distribution unit, a testing device, and a replenishing device as described in any one of claims 1 to 8; the cooling distribution unit includes a main pipeline that connects the cooling distribution unit to the testing device; the replenishing device is connected to the main pipeline.

12. The testing system according to claim 11, characterized in that, The fluid replenishment device also includes a pressure sensor electrically connected to the control component. The pressure sensor is used to detect the hydraulic and pneumatic information of the main pipeline. When the pressure sensor detects that the hydraulic information is lower than the minimum hydraulic threshold, the control component controls the fluid replenishment device to enter the fluid replenishment state. When the pressure sensor detects that the hydraulic information is higher than the maximum hydraulic threshold, the control component controls the fluid replenishment device to enter the recovery state. When the pressure sensor detects that the pneumatic information is higher than the maximum pneumatic threshold, the control component controls the fluid replenishment device to enter the venting state.

13. The testing system according to claim 11, characterized in that, The fluid replenishment device also includes a flow sensor electrically connected to the control component; the flow sensor is used to detect the flow information of the main pipeline; the control component controls the fluid replenishment device to enter or exit the venting state according to the flow information.

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