Server liquid cooling heat dissipation intelligent control system

Abstract

The utility model provides a kind of server liquid cooling heat dissipation intelligent control system, stoichiometry table is set on main circulation loop to monitor the acidity and alkalinity and ionic degree of liquid cooling medium, a filtration branch is set in parallel on main stream, and it is opened by electromagnetic valve control, and the filtration opportunity is judged according to the condition of acidity and alkalinity and ionic degree, and the automatic processing method of particle concentration over standard is realized.The further provided scheme in embodiment can realize automatic pipe blocking processing, automatic liquid supplement and automatic leak detection, the utility model is high in degree of automation, and can realize the requirement of KW level computing server with single system.

Description

Technical Field

[0001] This utility model relates to server heat dissipation systems, and in particular to intelligent control systems for server liquid cooling. Background Technology

[0002] Liquid cooling systems are critical systems in data centers, servers, and other fields, capable of meeting high-efficiency heat dissipation requirements. Traditional cooling methods suffer from insufficient heat dissipation efficiency and a high risk of localized overheating, especially in computing equipment where heat accumulation can lead to performance degradation or safety hazards. Furthermore, varying external environments, such as high altitudes, significantly reduce the fluidity of the liquid cooling medium, making it difficult for liquid cooling systems to intelligently adjust to environmental conditions. This severely limits the application scenarios of these products. Therefore, there is an urgent need for a solution that integrates high-precision temperature monitoring, multi-variable collaborative analysis, and intelligent early warning to improve the intelligent heat dissipation efficiency and operational stability of liquid cooling systems. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides an intelligent control system for server liquid cooling, comprising a heat exchanger, a main circulation loop connected to the hot end of the heat exchanger, and a heat dissipation loop connected to the cold end of the heat exchanger. The main circulation loop and the heat dissipation loop are respectively circulated by a pump body through which liquid cooling medium and heat dissipation medium flow. Within the main circulation loop, a water-cooling plate, a main flow path, and an expansion tank are sequentially connected according to the flow direction of the liquid cooling medium. The expansion tank is located between the inlet of the water-cooling plate and the hot end outlet of the heat exchanger, and the main flow path is located between the outlet of the water-cooling plate and the hot end inlet of the heat exchanger. A chemical meter is connected to the main circulation loop to detect the acidity, alkalinity, or ionicity of the liquid cooling medium in the main circulation loop.

[0004] It also includes a filter branch, which is connected in parallel to the main flow and is used to filter the liquid cooling medium. A solenoid valve is installed at the end of the filter branch.

[0005] It also includes a control center with preset threshold parameters. The control center compares the detection parameters fed back by the chemimeter with the threshold parameters. When the detection parameters exceed the threshold parameters, it sends a start command to the solenoid valve to open the filter branch.

[0006] As a further embodiment of this utility model, a first particulate filter and an ion filter are provided on the filter branch, and the first particulate filter and the ion filter are connected in parallel.

[0007] As a further embodiment of this utility model, the main circulation loop drives the flow of liquid cooling medium through a pump assembly, including a first fluid pump, a first check valve, and a first butterfly valve connected in series along the flow direction of the liquid cooling medium, and the first fluid pump is connected to the control center.

[0008] As a further embodiment of this utility model, the pump assembly consists of two sets, which are connected in parallel to the main circulation loop.

[0009] As a further embodiment of this utility model, a chemical meter is installed on the outlet side of the expansion tank.

[0010] As a further embodiment of this utility model, a replenishment pipeline is also provided on one side of the expansion tank. The replenishment pipeline is connected in series with the replenishment tank and the second particle filter, and the end of the replenishment pipeline is connected to the expansion tank.

[0011] As a further embodiment of this utility model, the liquid cooling medium in the replenishment tank flows to the expansion tank under the drive of the second fluid pump, which is connected to the control center.

[0012] As a further embodiment of this utility model, a level gauge is installed in the expansion tank. The level gauge is connected to the control center. The control center presets a high point and a low point of the liquid level. When the detected liquid level is lower than the preset low point of the liquid level, the second fluid pump is started.

[0013] As a further embodiment of this utility model, multiple sets of pressure gauges are installed on the main circulation loop. Each set of pressure gauges feeds back the detected pressure to the control center. The control center obtains the detected pressure difference information between adjacent pressure gauges on the multiple sets of main circulation loops based on the detected pressure information. The control center has a preset threshold pressure difference. The detected pressure difference is compared with the threshold pressure difference. When the detected pressure difference is higher than the threshold pressure difference, the pump body is controlled to stop working.

[0014] As a further embodiment of this utility model, a water tower is connected to the heat dissipation circuit, and the heat dissipation medium is driven by a third fluid pump to discharge the heat of the main circulation circuit into the air through the water tower.

[0015] This invention provides an intelligent control system for server liquid cooling. A chemical meter is installed on the main circulation loop to monitor the pH and ionicity of the liquid cooling medium. A filtration branch is connected in parallel on the main circulation loop and controlled by a solenoid valve. The timing of filtration is determined based on the pH and ionicity levels, enabling automated handling of excessive particle concentration. The embodiments further provide a solution that automates pipe blockage handling, automatic liquid replenishment, and automatic leak detection. This invention offers a high degree of automation and can meet the needs of a kilowatt-level computing server with a single system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the intelligent control system for server liquid cooling.

[0017] Figure reference numerals: 1. Water-cooled plate; 2. Third butterfly valve; 3. Thermometer; 4. First pressure gauge; 5. Second pressure gauge; 6. Second butterfly valve; 7. First particulate filter; 8. Ion filter; 9. Third pressure gauge; 10. Second check valve; 11. Solenoid valve; 12. Heat exchanger; 13. Fourth pressure gauge; 14. Fifth pressure gauge; 15. First fluid pump; 16. First check valve; 17. First butterfly valve; 18. Expansion tank; 19. Third check valve; 20. Second particulate filter; 21. Makeup tank; 22. Makeup port; 23. pH meter; 24. Ion meter; 25. Third fluid pump; 26. Water tower; 27. Main flow path; 28. Filtration branch path; 29. Detailed Implementation

[0018] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0022] like Figure 1The server liquid cooling intelligent control system shown includes a heat exchanger 12 and a main circulation loop, a heat dissipation loop, and a control center. The main circulation loop carries liquid cooling medium, which, through pump operation, forms a circulation loop connected to the hot end of the heat exchanger 12. The circulating liquid cooling medium carries heat from server chips and other heat sources to the heat exchanger 12. The heat dissipation loop carries heat dissipation medium, which, also through pump operation, forms a circulation loop connected to the cold end of the heat exchanger 12. This medium flows within the heat exchanger 12, exchanging heat with the liquid cooling medium and transferring the heat to the outside for dissipation. The heat exchanger 12 is the core of the two circulation loops. The heat exchanger 12 can be a plate heat exchanger 12 or a coil heat exchanger 12, etc. The liquid cooling medium and the heat dissipation medium are isolated within the heat exchanger 12, and heat is transferred through the tube walls. The control center can monitor certain quantitative parameters in the system and control the operation of executable components based on the monitoring results, such as controlling the opening and closing of each pump. The control center is also equipped with a work panel that can visually display various parameters in the system.

[0023] Specifically, the main circulation loop is driven by a pump assembly to flow the liquid cooling medium. The main circulation loop is connected in sequence according to the flow direction of the liquid cooling medium, including a water-cooled plate 1, a main flow path 28, and an expansion tank 18. The water-cooled plate 1 is the core component of the liquid cooling system. It is usually made of a high thermal conductivity metal and has an internal flow channel structure. The surface of the water-cooled plate 1 is in direct contact with the heat source and transfers heat through the flowing liquid medium.

[0024] like Figure 1 As shown, the pump assembly includes a first fluid pump 15, a first check valve 16, and a first butterfly valve 17 connected in series along the flow direction of the liquid cooling medium. The first fluid pump 15 provides circulation power for the liquid cooling medium, driving it to flow in the main circulation loop and ensuring that the liquid cooling medium can flow from the water-cooled plate 1 to the heat exchanger 12. The first check valve 16 guides the directional movement of the liquid cooling medium, preventing backflow caused by pressure fluctuations or the shutdown of the first fluid pump 15, which could cause impact damage to the first fluid pump 15, while maintaining stable positive pressure in the main circulation loop. The first butterfly valve 17 precisely controls the coolant flow rate to achieve dynamic balance of pressure and temperature in the main circulation loop. Furthermore, the pump assembly consists of multiple sets arranged in parallel, such as the two sets in this embodiment. The operation of two parallel first fluid pumps 15 can enhance the reliability of the system. When one first fluid pump 15 stops or fails, the other first fluid pump 15 can operate normally, ensuring the flow of the liquid cooling medium in the main circulation loop. Meanwhile, each of the two first fluid pumps 15 is equipped with a first butterfly valve 17, and each first butterfly valve 17 can make precise control over its respective liquid cooling medium.

[0025] A main flow path 28 connects the water-cooled plate 1 to the hot end inlet of the heat exchanger 12. A filter branch 29 is connected in parallel to the main flow path 28. The filter branch 29 is equipped with a first particulate filter 7 and an ion filter 8 for filtering the liquid cooling medium. The first filter can be a particulate filter to intercept larger metal fragments, particles, and other physical impurities in the liquid cooling medium, preventing these impurities from clogging the main circulation loop and causing damage to other components, such as the pump body. The ion filter 8 is connected in parallel to the first particulate filter 7 to remove dissolved ions from the coolant, preventing electrochemical corrosion or scaling due to excessive conductivity. A second butterfly valve 6 is further provided on each side of the filter branch 29 to regulate the flow rate of the liquid cooling medium flowing into the filter branch 29 before filtration and flowing out of the filter branch 29 after filtration, respectively. Similarly, a second check valve 10 is provided on the outlet side of the filter branch 29 to prevent the backflow of the filtered liquid cooling medium and damage to the first particulate filter 7 or the ion filter 8.

[0026] An expansion tank 18 is located between the hot end outlet of the heat exchanger 12 and the water-cooled plate 1, connected to the main circulation loop. The expansion tank 18 is filled with liquid cooling medium. When the liquid cooling medium changes due to temperature, external pressure, or composition, it also generates pressure, causing the liquid level in the expansion tank 18 to change. This balances the pressure within the main circulation loop, preventing damage to the pipelines or pump body due to excessive pressure fluctuations. The pump assembly is preferably located on the hot end outlet side of the heat exchanger 12, and the expansion tank 18 is located on the outlet side of the pump assembly, placing the expansion tank 18 in a relatively low-pressure area to ensure pressure balance in the low-pressure zone.

[0027] Meanwhile, the liquid cooling medium in the expansion tank 18 is relatively pure, and when it is supplied to the main circulation loop, it can dilute the ionization of the liquid cooling medium.

[0028] The control center includes a chemimeter connected to the main circulation loop and a solenoid valve 11 connected to the filter branch 29. The solenoid valve 11 opens and closes according to the instructions of the control center to open or close the filter branch 29. The chemimeter is used to monitor the chemical parameters of the liquid cooling medium in the main circulation loop, specifically the pH or ionization of the liquid cooling medium. The chemimeter used is a pH meter 24 or an ion meter 25. The chemimeter can feed back the detected parameters to the control center. The control center has preset threshold parameters. The threshold parameters are compared with the detected parameters to determine whether the parameters in the main circulation loop exceed the preset range. Then, the execution information is sent to the solenoid valve 11 to control the opening and closing timing of the solenoid valve 11. The chemimeter of the present invention can be set as a pH meter 24 or an ion meter 25 alone, or as shown in this embodiment, both pH meter 24 and ion meter 25 can be set simultaneously to detect pH or ionization.

[0029] For example, in this embodiment, the chemical meter is a pH meter 24 with a preset acid-base threshold of 8. Under normal conditions, the filtration branch 29 is closed, and the liquid cooling medium flows through the main flow path 28. When the pH meter 24 detects that the acidity or alkalinity of the liquid cooling medium exceeds 8, it indicates that the ion concentration in the main circulation loop is excessive and filtration is required. At this time, the solenoid valve 11 is opened, and the liquid cooling medium passes through the filtration branch 29, undergoing particulate filtration and ion filtration respectively, until the detected acidity or alkalinity returns to the normal range, at which point the solenoid valve 11 is closed. Considering the time difference between the opening of the pH meter 24 and the solenoid valve 11, the closing time of the solenoid valve 11 can be delayed. For example, after the detected acidity or alkalinity returns to 8, the solenoid valve 11 can remain open for ten minutes before being closed, thus completing the automatic purification of the low-ion-concentration liquid cooling medium.

[0030] The chemical meter is further installed on the outlet side of the expansion tank 18. As the core of the system pressure and volume adjustment, the liquid cooling medium on the outlet side of the expansion tank 18 mixes the media from various parts of the main circulation loop, and can better reflect the overall state of the main circulation loop.

[0031] As a further embodiment of this invention, a replenishment pipeline is provided on one side of the expansion tank 18 for filling the expansion tank 18 with new liquid cooling medium. A replenishment tank 22 and a second particulate filter 21 are connected in series on this replenishment pipeline. The end of the replenishment pipeline is connected to the expansion tank 18. Replenishment medium is introduced through the replenishment port 23 of the replenishment tank 22 and flows into the expansion tank 18 under the drive of the second fluid pump 20. The second fluid pump 20 is connected to a control center and controls the start-up timing of the replenishment pipeline according to the instructions of the control center. A third check valve 19 is further provided on the replenishment pipeline to prevent backflow of the replenishment medium.

[0032] As a further implementation of this embodiment, a level gauge is installed inside the expansion tank 18 to monitor the liquid level. The level gauge can feed back the monitored liquid level to the control center, where high and low liquid level points are preset. When the detected liquid level drops to the low liquid level point, the second fluid pump 20 is activated until the liquid level in the expansion tank 18 reaches the preset high liquid level point. When the detected liquid level exceeds the high liquid level point, liquid replenishment stops to prevent excessive liquid replenishment from causing excessive system pressure or overflow.

[0033] For example, in the above embodiment, when the filter branch 29 is opened, the expansion tank 18 will compensate the main circulation loop with liquid cooling medium due to the pressure reduction in the main circulation loop, causing the liquid level in the expansion tank 18 to drop. When the liquid level drops to the preset low liquid level point, the second fluid pump 20 is activated to replenish the expansion tank 18. If the pH value detected by the pH meter 24 is still greater than 8 during the filtration process, and the liquid level in the expansion tank 18 has also reached the preset high liquid level point, it indicates that the contaminant concentration in the main circulation loop is too high or the filter has failed. The control center will issue a light and sound alarm to the technicians, prompting them to inspect and maintain the system. Ultimately, this achieves the detection of excessive ion concentration in the main circulation loop and timely replenishment of the expansion tank 18.

[0034] As a further implementation of this embodiment, the control center also includes multiple sets of pressure gauges installed on the main circulation loop to test and report the pressure information of the liquid cooling medium at the measured locations. Based on this pressure information, the control center obtains the detected pressure difference information between adjacent pressure gauges on the main circulation loop. A threshold pressure difference is preset in the control center. The detected pressure difference is compared with the threshold pressure difference. When a detected pressure difference exceeds the threshold pressure difference, it is determined that there may be a blockage in the pipeline at that location in the main circulation loop. The control center then stops the pump and activates an audible and visual alarm to remind technicians to perform maintenance.

[0035] Pressure gauges can be installed in sections of the main circulation loop prone to blockage. For example, in this embodiment, a first pressure gauge 4, a second pressure gauge 5, a third pressure gauge 9, a fourth pressure gauge 13, and a fifth pressure gauge 14 are sequentially installed along the flow direction of the liquid cooling medium. The first pressure gauge 4 is located between the outlet of the water-cooled plate 1 and the main flow channel; the second pressure gauge 5 is located at the beginning of the filter branch 29; the third pressure gauge 9 is located at the end of the filter branch 29; the fourth pressure gauge 13 is located at the hot end outlet of the plate heat exchanger 12; and the fifth pressure gauge 14 is located on the inlet side of the water-cooled plate 1. The readings of each pressure gauge gradually decrease. The pressure difference between the first pressure gauge 4 and the second pressure gauge 5 can display the pressure difference information of the liquid cooling medium entering the filter branch 29; the second pressure gauge 5 and the third pressure gauge 9 display the pressure difference information of the liquid cooling medium before and after filtration; the third pressure gauge 9 and the fourth pressure gauge 13 display the pressure difference information of the liquid cooling medium before and after heat exchange; and the fourth pressure gauge 13 and the fifth pressure gauge 14 display the pressure difference information before and after compensation by the expansion tank 18. As described above, automatic detection of pipeline blockage is achieved.

[0036] As a further implementation of this embodiment, the control center also includes leak detection ropes, which are positioned at various interfaces or locations with high risk of leakage, such as the connection port between filter branch 29 and main flow 28. Leakage signals from the leak detection ropes are transmitted to the control center, which alerts technicians to the risk of leakage or to perform a shutdown operation via audible and visual signals or panel signals. For example, in this embodiment, when a leak signal is detected continuously for 5 seconds, the speed of each pump is reduced and a risk warning is issued to minimize the leakage; when a leak signal is detected continuously for 20 seconds, the operation of each pump is shut down and maintenance is requested, thus achieving automatic leak detection.

[0037] As a further implementation of this embodiment, a thermometer 3 is installed on the main circulation loop. The thermometer 3 is located at the inlet and outlet of the water-cooled plate 1 and is used to monitor and detect the temperature change of the liquid cooling medium in the main circulation loop in real time to prevent the electronic equipment from being damaged by overheating due to insufficient heat dissipation.

[0038] As a further implementation of this embodiment, a fourth butterfly valve is provided at the inlet and outlet of the water-cooled plate 1 to quantitatively control the inflow and outflow of the liquid cooling medium in the water-cooled plate 1.

[0039] A water tower 27 is connected to the heat dissipation circuit. The heat dissipation medium is the circulating water transferred from the water tower 27. The heat dissipation medium is driven to flow by the third fluid pump 26. The heat dissipation medium exchanges heat with the liquid cooling medium of the main circulation circuit through the heat exchanger 12, and then is transferred to the water tower 27. The water tower 27 discharges the heat transferred from the main circulation circuit into the air.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A server liquid cooling intelligent control system, comprising a heat exchanger (12), a main circulation loop connected to the hot end of the heat exchanger (12), and a heat dissipation loop connected to the cold end of the heat exchanger (12), wherein the main circulation loop and the heat dissipation loop are respectively circulated with liquid cooling medium and heat dissipation medium through a pump body, characterized in that: The main circulation loop is connected in sequence according to the flow direction of the liquid cooling medium, including a water cooling plate (1), a main flow path (28), and an expansion tank (18). The expansion tank (18) is located between the inlet of the water cooling plate (1) and the hot end outlet of the heat exchanger (12), and the main flow path (28) is located between the outlet of the water cooling plate (1) and the hot end inlet of the heat exchanger (12). A chemical meter is connected to the main circulation loop to detect the acidity or alkalinity or ionicity of the liquid cooling medium in the main circulation loop. It also includes a filter branch (29), which is connected in parallel to the main flow (28) for filtering the liquid cooling medium. A solenoid valve (11) is provided at the end of the filter branch (29). It also includes a control center, which has a preset threshold parameter. The control center compares the detection parameter fed back by the chemimeter with the threshold parameter. When the detection parameter exceeds the threshold parameter, it sends a start command to the solenoid valve (11) to open the filter branch (29).

2. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: The filter branch (29) is provided with a first particulate filter (7) and an ion filter (8), and the first particulate filter (7) and the ion filter (8) are connected in parallel.

3. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: The main circulation loop drives the flow of liquid cooling medium through a pump assembly, including a first fluid pump (15), a first check valve (16), and a first butterfly valve (17) connected in series along the flow direction of the liquid cooling medium. The first fluid pump (15) is connected to the control center.

4. The intelligent liquid cooling control system for servers as described in claim 3, characterized in that: The pump assembly consists of two sets, connected in parallel to the main circulation loop.

5. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: The chemimeter is located on the outlet side of the expansion tank (18).

6. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: A replenishment pipeline is also provided on one side of the expansion tank (18), and a replenishment tank (22) and a second particle filter (21) are connected in series on the replenishment pipeline. The end of the replenishment pipeline is connected to the expansion tank (18).

7. The intelligent liquid cooling control system for servers as described in claim 6, characterized in that: The liquid cooling medium in the replenishment tank (22) flows to the expansion tank (18) under the drive of the second fluid pump (20), which is connected to the control center.

8. The intelligent liquid cooling control system for servers as described in claim 7, characterized in that: The expansion tank (18) is equipped with a level gauge, which is connected to the control center. The control center has preset high and low liquid levels. When the detected liquid level is lower than the preset low liquid level, the second fluid pump (20) is started.

9. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: Multiple pressure gauges are installed on the main circulation loop. Each pressure gauge feeds back the detected pressure to the control center. The control center obtains the detected pressure difference information between adjacent pressure gauges on the main circulation loop based on the detected pressure information. The control center has a preset threshold pressure difference. The detected pressure difference is compared with the threshold pressure difference. When the detected pressure difference is higher than the threshold pressure difference, the pump body is controlled to stop working.

10. The intelligent liquid cooling control system for servers as described in claim 1, characterized in that: A water tower (27) is connected to the heat dissipation circuit. The heat dissipation medium is driven by a third fluid pump (26) and the heat from the main circulation circuit is discharged into the air through the water tower (27).

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