Liquid cooling system control methods, devices, liquid cooling systems and media

Abstract

This invention discloses a liquid cooling system control method, device, liquid cooling system, and medium. The method includes: acquiring the secondary side return liquid temperature and secondary side return liquid flow rate in a secondary side liquid supply pipeline carrying heat energy to be dissipated; acquiring heat exchange parameters between a primary side liquid supply pipeline providing cooling capacity and the secondary side liquid supply pipeline; determining the cooling demand of the secondary side liquid supply pipeline based on the secondary side return liquid temperature and secondary side return liquid flow rate; calculating the target cooling capacity of the primary side liquid supply pipeline based on the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline; and adjusting the liquid flow rate and / or temperature in the primary side liquid supply pipeline according to the target cooling capacity, thereby achieving precise control of the cooling capacity output of the primary side liquid supply pipeline based on real-time heat changes on the side to be dissipated.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology, and in particular to a liquid cooling system control method, apparatus, liquid cooling system, and computer-readable storage medium. Background Technology

[0002] Currently, there are more and more occasions that require the use of large-scale liquid cooling systems for heat dissipation. For example, with the booming development of information technologies such as big data, the Internet and cloud computing, data centers, as an essential infrastructure for information technology, are gradually developing towards large-scale and high-density, and the problem of server heat generation in data centers is becoming more and more prominent.

[0003] To address overheating issues, many data center server rooms currently employ liquid cooling systems to dissipate heat from servers. Known liquid cooling system control targets the temperature of the coolant used to cool the servers, adjusting the flow rate of the liquid providing cooling capacity. However, when the heat generated by the server changes abruptly, or when a localized hotspot occurs due to a rapid increase in server heat output, adjusting the flow rate based on the coolant temperature introduces a delay. The heat generated by the server must complete at least one heat exchange cycle within the liquid cooling system, and the lingering heat must act on the liquid flowing to the server, raising its temperature before control can be activated. This results in temperature fluctuations within the liquid cooling system, impacting its heat dissipation performance. Summary of the Invention

[0004] To address the existing technical problems, embodiments of the present invention provide a liquid cooling system control method, apparatus, liquid cooling system, and computer-readable storage medium that enable more timely and precise heat dissipation control.

[0005] The technical solution of this invention is implemented as follows:

[0006] Firstly, a method for controlling a liquid cooling system includes:

[0007] Obtain the secondary side return liquid temperature and secondary side return liquid flow rate in the secondary side supply liquid pipeline carrying the heat energy to be dissipated;

[0008] Obtain the heat exchange parameters between the primary side liquid supply pipeline that provides cooling capacity and the secondary side liquid supply pipeline;

[0009] The cooling demand of the secondary side liquid supply pipeline is determined based on the secondary side return liquid temperature and the secondary side return liquid flow rate.

[0010] Based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline, the target cooling capacity of the primary side liquid supply pipeline is calculated, and the liquid flow rate and / or temperature in the primary side liquid supply pipeline are adjusted according to the target cooling capacity.

[0011] Secondly, a liquid cooling system control device is also provided, comprising:

[0012] The first acquisition module is used to acquire the secondary side return liquid temperature and secondary side return liquid flow rate in the secondary side liquid supply pipeline carrying the heat energy to be dissipated.

[0013] The second acquisition module is used to acquire the heat exchange parameters between the primary side liquid supply pipeline that provides cooling capacity and the secondary side liquid supply pipeline;

[0014] The demand determination module is used to determine the cooling demand of the secondary side liquid supply pipeline based on the secondary side return liquid temperature and the secondary side return liquid flow rate.

[0015] The control module is used to calculate the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, and to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline according to the target cooling capacity.

[0016] Thirdly, a liquid cooling system is provided, including a primary side liquid supply pipeline for providing cooling capacity, a secondary side liquid supply pipeline deployed on the side to be cooled, and a controller. A primary side valve is provided in the primary side liquid supply pipeline, and the controller is connected to the primary side valve.

[0017] The controller is used to execute a computer program to implement the liquid cooling system control method described in any embodiment of this application.

[0018] Fourthly, a computer-readable storage medium is provided, storing a computer program that, when executed by a processor, causes the processor to perform the liquid cooling system control method according to any embodiment of this application.

[0019] The liquid cooling system control method provided in the above embodiments of this application monitors the coolant in the secondary side supply pipeline that carries away heat from the side to be cooled, obtaining real-time secondary side return liquid temperature and flow rate to determine the cooling demand. Based on the heat exchange parameters between the primary side supply pipeline and the secondary side supply pipeline, and the cooling demand, the required target cooling capacity is calculated. The primary side supply pipeline is then controlled to adjust the liquid flow rate and / or temperature in a timely manner according to the target cooling capacity, thereby adjusting the actual cooling capacity of the primary side supply pipeline to match the target cooling capacity. In this way, by monitoring the secondary side return liquid temperature and flow rate that directly exchange heat with the side to be cooled, the cooling demand can be calculated in a timely manner in response to changes in the heat on the side to be cooled. This allows for more timely and accurate adjustment of the cooling capacity output of the primary side supply pipeline based on the cooling demand, achieving precise cooling capacity output based on changes in the heat on the side to be cooled, thus achieving precise heat dissipation temperature control and effectively improving the heat dissipation performance of the liquid cooling system.

[0020] The liquid cooling system control device, liquid cooling system, and computer-readable storage medium provided in the above embodiments belong to the same concept as the corresponding liquid cooling system control method embodiments, and thus have the same technical effects as the corresponding liquid cooling system control method embodiments, which will not be repeated here. Attached Figure Description

[0021] Figure 1 This is a system architecture diagram for an optional application scenario of the liquid cooling system control method in one embodiment;

[0022] Figure 2 This is a flowchart of a liquid cooling system control method in one embodiment;

[0023] Figure 3 This is a schematic diagram of the structure of the control device for the liquid cooling system in one embodiment;

[0024] Figure 4 This is a schematic diagram of the liquid cooling system in one embodiment;

[0025] Figure 5 A flowchart of a liquid cooling system control method in an optional specific example;

[0026] Figure 6 This is a flowchart of a liquid cooling system control method in another optional specific example. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In the following description, the expression “some embodiments” refers to a subset of all possible embodiments. However, it should be understood that “some embodiments” can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0030] Please see Figure 1 This is a system architecture diagram illustrating an optional application scenario of the liquid cooling system control method provided in this application embodiment. The liquid cooling system control method can be applied to a liquid cooling system, which includes a secondary-side liquid supply pipeline 51 deployed on the side to be cooled, a primary-side liquid supply pipeline 53 for providing cooling capacity, a heat exchanger 54 connecting the secondary-side liquid supply pipeline 51 and the primary-side liquid supply pipeline 53 for heat exchange, and a controller 55. The side to be cooled can refer to a data center server room. When the liquid in the secondary-side liquid supply pipeline 51 flows through the servers in the data center server room, it carries away the heat generated by the servers. The liquid carrying heat from the server in the secondary liquid supply line 51 flows towards the primary liquid supply line 53, where it transfers heat to the primary liquid supply line 53 at the heat exchanger 54 before flowing back to the server. Simultaneously, the liquid in the primary liquid supply line 53, after receiving heat from the secondary liquid supply line 51 at the heat exchanger 54, flows to the cooling section 531 in the primary liquid supply line 53 to release heat, and then the coolant flows back to the heat exchanger 54. Thus, the heat generated by the server is promptly delivered to the heat exchanger 54 via the secondary liquid supply line 51, and after heat exchange, the heat is transferred to the primary liquid supply line 53 for timely release, and the cycle repeats. A valve 534 is installed in the primary liquid supply line 53, and the liquid flow rate in the primary liquid supply line 53 can be adjusted by regulating the opening of the valve 534. A pump 533 is also installed in the primary liquid supply line 53, and changes in the pump frequency can also adjust the liquid supply volume of the primary liquid supply line 53. In the primary side liquid supply pipeline 53, the cooling section 531 is also equipped with a fan 532. The change in the speed of the fan 532 can adjust the efficiency of the cooling section 531 in releasing heat to the outside, so as to adjust the liquid temperature in the primary side liquid supply pipeline 53 accordingly.

[0031] The primary-side liquid supply pipeline 53 includes a first liquid supply pipe and a first liquid return pipe connected between the heat exchanger 54 and the cooling section 531. The first liquid supply pipe is the pipe through which liquid flows from the cooling section 531 to the heat exchanger 54 after releasing heat. The first liquid return pipe is the pipe through which liquid flows from the heat exchanger 54 to the cooling section 531 after absorbing heat energy transferred from the secondary-side liquid supply pipeline 51. The secondary-side liquid supply pipeline 51 includes a second liquid supply pipe and a second liquid return pipe connected between the server and the heat exchanger 54. The second liquid supply pipe is the pipe through which liquid flows from the heat exchanger 54 to the server after transferring heat energy to the primary-side liquid supply pipeline 53. The second liquid return pipe is the pipe through which liquid flows from the server to the heat exchanger 54 after absorbing heat generated by the server.

[0032] The liquid flow rate of the primary side supply pipe 53 typically refers to the first return liquid flow rate in the first return liquid pipe, which can correspondingly characterize the flow rate of the coolant flowing from the primary side supply pipe 53 to the heat exchanger 54 for heat exchange with the secondary side supply pipe 51. The liquid temperature of the primary side supply pipe 53 typically refers to the first return liquid temperature in the first return liquid pipe, which can correspondingly characterize the temperature of the coolant flowing from the primary side supply pipe 53 to the heat exchanger 54 for heat exchange with the secondary side supply pipe 51. The secondary side return liquid flow rate typically refers to the liquid flow rate in the second return liquid pipe, which can correspondingly characterize the flow rate of the coolant flowing through the server in the secondary side supply pipe 51 to remove heat. The secondary side return liquid temperature typically refers to the liquid flow rate in the second return liquid pipe, which can correspondingly characterize the temperature of the coolant carrying server heat after flowing through the server in the secondary side supply pipe 51, and can also be referred to as the server outlet temperature.

[0033] In a liquid cooling system, the operating parameters of the primary side liquid supply line 53 typically include at least one of the following: the first liquid supply temperature and the first liquid supply pressure of the first liquid supply line, and the first liquid return temperature and the first liquid return pressure of the first liquid return line; the operating parameters of the secondary side liquid supply line 51 typically include at least one of the following: the second liquid supply temperature and the second liquid supply pressure of the second liquid supply line, and the second liquid return temperature (secondary side liquid return temperature) and the second liquid return pressure (secondary side liquid return flow rate) of the second liquid return line.

[0034] The controller 55 monitors the secondary side return liquid temperature and flow rate of the secondary side liquid supply pipeline 51 in real time. The secondary side return liquid temperature and flow rate can promptly reflect the changes in heat on the side to be cooled, determine the required cooling demand of the side to be cooled, and dynamically adjust the frequency of pump 533, the opening degree of valve 534, and the speed of fan 532 in the primary side liquid supply pipeline 53 according to the cooling demand. This ensures that the primary side liquid supply pipeline 53 can provide cooling capacity that matches the current required cooling capacity, achieves more accurate cooling output, achieves the purpose of precise heat dissipation control, and effectively improves the heat dissipation performance of the liquid cooling system. In addition, the controller 55, based on the precise adjustment and control of the cooling capacity supply of the primary side liquid supply pipeline 53, controls the frequency of the pump 533, the opening degree of the valve 534, and the speed of the fan 532 in the primary side liquid supply pipeline 53 through linkage control. While improving the energy efficiency of the pump 533, it keeps the fan 532 operating within the energy-saving and energy-efficient range, so that the liquid cooling system as a whole operates in the optimal energy efficiency range, thereby achieving the purpose of effective energy saving and improving system stability.

[0035] Please see Figure 2 The liquid cooling system control method provided in one embodiment of this application can be applied to... Figure 1 The controller shown, the liquid cooling system control method includes the following steps:

[0036] S101, acquire the secondary side return liquid temperature and secondary side return liquid flow rate in the secondary side supply liquid pipeline carrying the heat energy to be dissipated.

[0037] S103, obtain the heat exchange parameters between the primary side liquid supply pipeline that provides cooling capacity and the secondary side liquid supply pipeline;

[0038] S105, determine the cooling demand of the secondary side liquid supply pipeline based on the secondary side return liquid temperature and the secondary side return liquid flow rate;

[0039] S107, based on the relationship between the cooling demand, the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, calculate the target cooling capacity of the primary side liquid supply pipeline, and adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline according to the target cooling capacity.

[0040] The liquid cooling system consists of two parts: a primary-side supply line and a secondary-side supply line. The secondary-side supply line is located on the side to be cooled. As the coolant flows through this side, it carries the heat generated there to the primary-side supply line. The primary-side supply line then absorbs and releases the heat transferred from the secondary-side supply line, achieving timely cooling of the affected side. A heat exchanger can be installed between the primary and secondary supply lines to facilitate heat exchange. The secondary-side supply line, based on the coolant flow direction, is divided into a secondary return line that flows from the side to be cooled to the heat exchanger after carrying away heat, and a secondary supply line that flows back to the server after the heat exchanger transfers heat to the primary-side supply line. Similarly, the primary side liquid supply pipeline is divided into a primary side return pipeline that flows from the heat exchanger after receiving heat from the secondary side liquid supply pipeline to the cooling section, and a primary side liquid supply pipeline that flows back to the heat exchanger after the cooling section releases the heat.

[0041] Optionally, a first temperature sensor is provided in the primary side supply pipeline. The controller receives the primary side temperature data collected in real time by the first temperature sensor, enabling real-time monitoring of the temperature of the primary side supply pipeline. The first temperature sensor can be located in either the primary side supply pipeline or the primary side return pipeline. In this embodiment, the liquid temperature in the primary side supply pipeline refers to the primary side supply temperature. A first flow sensor is also provided in the primary side supply pipeline. The controller receives the primary side flow rate data collected in real time by the first flow sensor, enabling real-time monitoring of the flow rate in the primary side supply pipeline. The first flow sensor can be located in either the primary side supply pipeline or the primary side return pipeline. In this embodiment, the liquid flow rate in the primary side supply pipeline refers to the primary side supply flow rate.

[0042] A second temperature sensor can be installed in the secondary return pipe of the secondary supply line. The controller receives the real-time secondary return temperature collected by the second temperature sensor, enabling real-time monitoring of the outlet temperature of the side to be cooled. A second flow sensor is also installed in the secondary return pipe of the secondary supply line. The controller receives the real-time secondary return flow rate collected by the second flow sensor, enabling real-time monitoring of the outlet flow rate of the side to be cooled. In the secondary supply line, when the coolant flows through the side to be cooled, it exchanges heat with the side to be cooled, thus dissipating heat. The higher the temperature of the side to be cooled, the higher the temperature of the liquid flowing through it, that is, the higher the secondary return temperature. Therefore, by monitoring the secondary return temperature in real time, changes in heat on the side to be cooled can be promptly reported, especially in cases of a sharp increase in heat generation on the side to be cooled. Optionally, in this embodiment, the controller monitors the secondary side return liquid temperature and secondary side return liquid flow rate in real time to determine the required cooling demand of the side to be cooled. Based on the real-time cooling demand of the side to be cooled and the heat exchange parameters between the secondary side liquid supply pipeline and the primary side liquid supply pipeline, the controller calculates the target cooling capacity that can meet the current cooling demand, thereby controlling the liquid flow rate and / or temperature of the primary side liquid supply pipeline, that is, controlling the cooling capacity supply of the primary side liquid supply pipeline.

[0043] The heat exchange parameters between the primary and secondary liquid supply lines can refer to the heat transfer coefficient of the heat exchanger used to achieve heat exchange between them. In some embodiments, the heat exchanger is filled with heat exchange material, and the portions of the primary and secondary liquid supply lines located within the heat exchanger exchange heat through this material. The heat transfer coefficient of the heat exchanger is related to the heat transfer coefficient of the heat exchange material and the area of ​​the portions of the primary and secondary liquid supply lines located within the heat exchanger. In other embodiments, the heat transfer coefficient of the heat exchanger can be predetermined through calibration and testing. Typically, the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary liquid supply line refers to the product of the cooling demand of the secondary liquid supply line and the heat transfer coefficient, which represents the target cooling capacity of the primary liquid supply line.

[0044] Optionally, adjusting the liquid flow rate and / or temperature of the primary side liquid supply line can refer to adjusting one or more of the primary side valve, primary side fan, and primary side circulation pump in the primary side liquid supply line to correspondingly change the liquid flow rate, liquid temperature, or simultaneously change the liquid flow rate and temperature of the primary side liquid supply line, so that the cooling capacity provided by the primary side circulation line can reach the target cooling capacity, that is, meet the current cooling demand of the side to be cooled.

[0045] In the above embodiments, the controller monitors the coolant in the secondary side supply pipeline that carries away heat from the side to be cooled, obtaining real-time secondary side return liquid temperature and flow rate to determine the cooling demand. Based on the heat exchange parameters between the primary side supply pipeline and the secondary side supply pipeline, and the cooling demand, the controller calculates the required target cooling capacity and controls the primary side supply pipeline to adjust the liquid flow rate and / or temperature in a timely manner according to the target cooling capacity, so that the actual cooling capacity of the primary side supply pipeline matches the target cooling capacity. Thus, by monitoring the secondary side return liquid temperature and flow rate that directly exchange heat with the side to be cooled, the controller can respond promptly to changes in the heat on the side to be cooled and calculate the cooling demand. Consequently, the cooling capacity output of the primary side supply pipeline can be adjusted more timely and accurately according to the cooling demand, achieving precise cooling capacity output based on changes in the heat on the side to be cooled, thus achieving precise heat dissipation temperature control and effectively improving the heat dissipation performance of the liquid cooling system.

[0046] In some embodiments, the liquid cooling system control method further includes:

[0047] Obtain the primary side supply temperature of the primary side supply pipeline;

[0048] The step of calculating the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline, and adjusting the liquid flow rate and / or temperature in the primary side liquid supply pipeline according to the target cooling capacity, includes:

[0049] Based on the cooling demand, the heat exchange parameters, and the relationship between the primary side liquid supply temperature and the cooling capacity of the primary side liquid supply pipeline, the target primary side liquid supply volume in the primary side liquid supply pipeline is calculated, and the opening degree of the primary side valve in the primary side liquid supply pipeline is controlled according to the target primary side liquid supply volume.

[0050] In the primary side liquid supply pipeline, the variables that adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline can include one variable, such as the opening degree of the primary side valve, which directly affects the liquid flow rate in the primary side liquid supply pipeline; or they can include multiple variables, such as the opening degree of the primary side valve, the frequency of the primary side circulation pump, and the speed of the primary side fan. In this embodiment, a calculation relationship is pre-established for calculating the cooling capacity of the primary liquid supply pipeline using the primary side liquid supply volume and primary side liquid supply temperature as variables (assuming that other operating parameters of the primary side liquid supply pipeline remain unchanged, and the cooling capacity is equal to the product of the primary side liquid supply volume F1 and the primary side liquid supply temperature T1), and a calculation relationship is pre-established for calculating the cooling demand of the secondary side liquid supply pipeline using the secondary side return liquid temperature and secondary side return liquid flow rate as variables (assuming that other operating parameters of the secondary side liquid supply pipeline remain unchanged, and the cooling demand is equal to the product of the secondary side liquid supply volume F2 and the secondary side liquid supply temperature T2). By using the relationship satisfied between the cooling capacity, the cooling demand, and the heat exchange parameters between the primary side liquid supply pipeline and the secondary side liquid supply pipeline, such as: primary side liquid supply volume F1 * primary side liquid supply temperature T1 * heat exchange parameter A = secondary side return liquid volume F2 * secondary side return liquid temperature T2, the cooling capacity of the primary side liquid supply pipeline is adjusted in real time to match the cooling demand of the secondary side liquid supply pipeline.

[0051] In the above embodiments, the heat exchange parameter A can be regarded as a constant. By monitoring the secondary side return liquid temperature, secondary side return liquid flow rate and primary side supply liquid temperature in real time, the target primary side supply liquid volume corresponding to the current required cooling demand can be calculated. The opening of the primary side valve is adjusted accordingly to adjust the liquid flow rate in the primary side supply liquid pipeline, so as to achieve the purpose of accurate output of cooling capacity based on the heat change of the heat-dissipating side.

[0052] In some embodiments, calculating the target cooling capacity of the primary-side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary-side liquid supply pipeline, and adjusting the liquid flow rate and / or temperature in the primary-side liquid supply pipeline according to the target cooling capacity includes:

[0053] Based on the relationship between the cooling demand, the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, the target cooling capacity of the primary side liquid supply pipeline is calculated.

[0054] If the current cooling capacity of the primary side liquid supply line is less than the target cooling capacity, and the opening degree of the primary side valve in the primary side liquid supply line is lower than the opening degree threshold, the opening degree of the primary side valve is controlled to increase.

[0055] If the current cooling capacity of the primary side liquid supply pipeline is less than the target cooling capacity and the opening degree of the primary side valve reaches the opening degree threshold, the primary side fan and the primary side circulation pump in the primary side liquid supply pipeline are controlled in sequence to increase the cooling capacity of the primary side liquid supply pipeline.

[0056] In this embodiment, the variables used to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline include the opening degree of the primary side valve, the frequency of the primary side circulation pump, and the rotational speed of the primary side fan. The heat exchange parameter A can be considered a constant. By monitoring the secondary side return liquid temperature and flow rate in real time, the cooling demand required for the heat dissipation of the side to be cooled can be calculated. This allows for the calculation of the target cooling capacity of the primary side circulation pipeline, which provides the cooling supply. Based on this target cooling capacity, the primary side valve, primary side circulation pump, and primary side fan in the primary side liquid supply pipeline are controlled in a coordinated manner to achieve precise cooling output based on the heat changes of the side to be cooled.

[0057] When the current cooling capacity of the primary side liquid supply line is less than the target cooling capacity, it indicates that the cooling supply in the liquid cooling system is insufficient. In this case, the opening of the primary side valve is adjusted first, increasing its opening. During operation, when the liquid cooling system requires increased cooling supply, the primary side valve opening is increased first. If increasing the primary side valve opening is sufficient to increase the cooling supply, the liquid cooling system can achieve a heat exchange effect that matches the current cooling demand while minimizing flow resistance in the primary side liquid supply line. If, after increasing the primary side valve opening to the threshold value, the current cooling capacity of the primary side liquid supply line is still less than the target cooling capacity, the cooling supply in the primary side liquid supply line is further increased by sequentially adjusting the speeds of the primary side fan and the primary side circulation pump. The threshold value can refer to the maximum opening of the primary side valve. When the opening degree of the primary valve in the primary supply pipeline increases, the liquid flow rate in the primary supply pipeline increases accordingly, and the fluid resistance in the pipeline decreases accordingly.

[0058] In the above embodiments, during the process of adjusting and controlling the primary side fan and the primary side circulation pump to increase the cooling capacity supply, the flow resistance in the primary side liquid supply pipeline is at its minimum, which can effectively improve the energy efficiency of the primary side circulation pump. Thus, by linking and controlling the primary side valve, the primary side fan and the primary side circulation pump, the liquid cooling system as a whole is ensured to operate within the optimal energy efficiency range, so as to achieve the purpose of effective energy saving and improving system stability.

[0059] In some embodiments, the sequential control of the primary-side fan and primary-side circulation pump in the primary-side liquid supply pipeline to increase the cooling capacity of the primary-side liquid supply pipeline includes:

[0060] Determine whether the current speed of the primary side fan in the primary side liquid supply pipeline has reached the energy-saving speed;

[0061] If the current speed of the primary side fan has reached the energy-saving speed, the pressure difference target value of the primary side circulation pump in the primary side liquid supply pipeline is increased until the pressure difference target value reaches the pressure difference threshold, and then the current speed of the primary side fan is increased.

[0062] If the current speed of the primary side fan is lower than the energy-saving speed, the current speed of the primary side fan is controlled to increase to the energy-saving speed.

[0063] A primary-side fan is installed in the cooling section of the primary-side liquid supply pipeline. Turning on the primary-side fan accelerates the heat release efficiency of the primary-side liquid supply pipeline in the cooling section. Correspondingly, the higher the speed of the primary-side fan, the higher the heat release efficiency of the primary-side liquid supply pipeline, thus facilitating a rapid reduction in the primary-side liquid supply temperature. The energy-saving speed can refer to a speed value determined based on the performance parameters of the primary-side fan. When the fan speed exceeds this value, the fan's energy efficiency will significantly deteriorate. Optionally, the energy-saving speed of the primary-side fan can be determined based on the fan's performance parameter curve. In this embodiment, when the controller adjusts and controls the primary-side fan and primary-side circulating pump to increase the cooling capacity supply, it first judges the operating status of the primary-side fan. If the primary-side fan speed has not reached the energy-saving speed, the cooling capacity of the primary-side liquid supply pipeline can be increased by increasing the primary-side fan speed. During this process, the cooling capacity is increased by controlling the primary-side fan to always operate in the high-efficiency range. When the primary side fan speed increases to the energy-saving speed, if the current cooling capacity of the primary side liquid supply line is still less than the target cooling capacity, the pressure difference target value of the primary side circulation pump is further increased to increase the liquid supply of the primary side liquid supply line and thus increase the cooling capacity. During this process, the primary side fan is kept operating within the high-efficiency range, and the cooling capacity is increased in conjunction with the control of the primary side circulation pump, thus meeting the cooling demand while maintaining the overall energy efficiency of the liquid cooling system. When the pressure difference target value of the primary side circulation pump reaches the pressure difference threshold, if the current cooling capacity of the primary side liquid supply line is still less than the target cooling capacity, the speed of the primary side fan is increased again to increase the efficiency of heat release in the cooling section of the primary side liquid supply line. This helps to quickly reduce the primary side liquid supply temperature, prioritizing system temperature while appropriately sacrificing the overall energy efficiency of the liquid cooling system, thereby adjusting the cooling capacity supply of the primary side liquid supply line.

[0064] In the above embodiments, the adjustment of the cooling capacity supply in the primary side liquid supply pipeline of the liquid cooling system is divided into multiple stages. If the current cooling capacity cannot meet the target cooling capacity, the opening of the primary side valve is increased first to minimize the flow resistance in the primary side liquid supply pipeline and obtain a cooling capacity that matches the current cooling demand. If the current cooling capacity still cannot meet the target cooling capacity, the speed of the primary side fan is kept below the energy-saving speed to keep the primary side fan always operating within the high-efficiency range and obtain a cooling capacity that matches the current cooling demand. If the current cooling capacity still cannot meet the target cooling capacity, the pressure difference target value of the primary side circulation pump does not exceed the pressure difference threshold first to maintain the working performance of the primary side liquid supply pipeline. The system achieves a cooling capacity that matches the current cooling demand while maintaining stability. If the current cooling capacity still cannot meet the target cooling capacity, the speed of the primary side fan is further increased to ensure that the overall energy efficiency of the liquid cooling system is appropriately sacrificed to meet the current heat dissipation demand. This achieves the regulation and control of increasing the cooling capacity supply of the primary side liquid supply line. In this way, the regulation and control of the cooling capacity supply of the primary side liquid supply line is increased. The impact of valve opening on system energy efficiency and the energy efficiency range of fan operation are considered. The control of primary side valve opening, primary side fan speed, and primary side circulation pump are differentiated into multiple cases. Under the premise of achieving a more accurate output of cooling capacity that matches the cooling demand, the liquid cooling system achieves energy saving and stability.

[0065] In some embodiments, the liquid cooling system control method further includes:

[0066] If the current cooling capacity of the primary side liquid supply pipeline is greater than the target cooling capacity, the primary side circulation pump, primary side fan and primary side valve in the primary side liquid supply pipeline are controlled in sequence to reduce the cooling capacity of the primary side liquid supply pipeline.

[0067] The controller performs coordinated control of the primary-side valve, primary-side circulation pump, and primary-side fan in the primary-side liquid supply pipeline according to the target cooling capacity. In the process of achieving accurate output of cooling capacity based on the heat change of the side to be cooled, when the current cooling capacity of the primary-side liquid supply pipeline is greater than the target cooling capacity, it indicates that there is a certain redundancy in the cooling capacity supply of the liquid cooling system. At this time, the primary-side circulation pump, primary-side fan, and primary-side valve are adjusted and controlled in sequence to ensure that the liquid cooling system can operate in the optimal energy efficiency range while matching the current cooling capacity supply demand, so as to achieve effective energy saving and improve system stability.

[0068] Optionally, the step of sequentially controlling the primary-side circulating pump, primary-side fan, and primary-side valve in the primary-side liquid supply pipeline to reduce the cooling capacity of the primary-side liquid supply pipeline includes:

[0069] Determine whether the target pressure difference value of the primary side circulation pump is greater than the initial value;

[0070] If the target differential pressure value is greater than the initial value, the target differential pressure value of the primary side circulating pump is reduced to the initial value. Then, it is determined whether the current speed of the primary side fan is greater than the energy-saving speed. The current speed of the primary side fan is reduced to the energy-saving speed, and then the opening of the primary side valve is reduced.

[0071] When the current cooling capacity of the primary side liquid supply line exceeds the target cooling capacity, the controller sequentially controls the primary side circulation pump, primary side fan, and primary side valve in the primary side liquid supply line to reduce the cooling capacity supplied. First, the operating status of the primary side circulation pump is assessed. If the target pressure difference of the primary side circulation pump is greater than the initial value, the target pressure difference can be reduced to the initial value to decrease the liquid supply in the primary side liquid supply line. This ensures that the cooling capacity provided by the primary side liquid supply line better matches the heat dissipation demand, saving overall energy efficiency of the liquid cooling system. After the target pressure difference of the primary side circulation pump is returned to the initial value, the cooling capacity of the liquid cooling system can be adjusted by controlling the speed of the primary side fan to meet the heat dissipation demand of the side to be cooled. For example, if the current cooling capacity of the primary side liquid supply line is still greater than the target cooling capacity after the target pressure difference of the primary side circulation pump is returned to the initial value, the speed of the primary side fan can be reduced. By reducing the speed of the primary side fan, the cooling capacity of the primary side liquid supply line is reduced, so that the cooling capacity provided by the primary side liquid supply line can better match the heat dissipation demand, thus saving the overall energy efficiency of the liquid cooling system. If the current cooling capacity of the primary side liquid supply line is still greater than the target cooling capacity, the opening degree of the primary side valve is further reduced by controlling it.

[0072] The initial value of the differential pressure target value corresponds to the minimum speed of the primary circulating pump. During the process of reducing the cooling capacity of the primary side liquid supply pipeline, the controller first keeps the current opening of the primary side valve unchanged. If the cooling capacity supply can be adjusted by regulating the primary side circulation pump, the liquid cooling system can achieve a heat exchange effect that matches the current cooling demand while minimizing the flow resistance in the primary side liquid supply pipeline. If the current cooling capacity of the primary side liquid supply pipeline is still greater than the target cooling capacity after the speed of the primary side circulation pump is reduced to the minimum, the speed of the primary side fan is then reduced and kept within the high-efficiency range. Then, the opening of the primary side valve is reduced. The reduction in the opening of the primary side valve will increase the fluid resistance in the primary side liquid supply pipeline, but at the same time, it will reduce the liquid supply to a suitable range while matching the current cooling demand. In this way, by linking the control of the primary side circulation pump, the primary side fan, and the primary side valve, the liquid cooling system can achieve a more accurate output of cooling capacity that matches the cooling demand while operating within the optimal energy efficiency range.

[0073] In the above embodiments, the controller takes into account the energy efficiency range of the fan in the adjustment control logic that requires reducing the cooling capacity of the primary side liquid supply pipeline according to the changes in actual application. It first ensures that the pressure difference target value of the primary side circulation pump returns to the initial value, and then adjusts the speed of the primary side fan to keep it running in the high energy efficiency range and reduces the valve opening. This achieves more accurate balance between heat dissipation requirements, effectively saves energy and improves system stability.

[0074] Please see Figure 3 In another aspect, this application provides a liquid cooling system control device, comprising: a first acquisition module 551, configured to acquire the secondary side return liquid temperature and secondary side return liquid flow rate in a secondary side liquid supply pipeline carrying heat energy to be dissipated; a second acquisition module 552, configured to acquire heat exchange parameters between a primary side liquid supply pipeline providing cooling capacity and the secondary side liquid supply pipeline; a demand determination module 553, configured to determine the cooling demand of the secondary side liquid supply pipeline based on the secondary side return liquid temperature and the secondary side return liquid flow rate; and a control module 554, configured to calculate the target cooling capacity of the primary side liquid supply pipeline based on the cooling demand, the relationship between the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, and adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline according to the target cooling capacity.

[0075] Optionally, the first acquisition module 551 is further configured to acquire the primary side supply temperature of the primary side supply pipeline; the control module 554 is further configured to calculate the primary side target supply volume in the primary side supply pipeline based on the cooling demand, the heat exchange parameters, the relationship between the primary side supply temperature and the cooling capacity of the primary side supply pipeline, and control the opening degree of the primary side valve in the primary side supply pipeline according to the primary side target supply volume.

[0076] Optionally, the control module 554 is further configured to calculate the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline; if the current cooling capacity of the primary side liquid supply pipeline is less than the target cooling capacity and the opening degree of the primary side valve in the primary side liquid supply pipeline is lower than the opening degree threshold, control the opening degree of the primary side valve to increase; if the current cooling capacity of the primary side liquid supply pipeline is less than the target cooling capacity and the opening degree of the primary side valve reaches the opening degree threshold, sequentially control the primary side fan and the primary side circulation pump in the primary side liquid supply pipeline to increase the cooling capacity of the primary side liquid supply pipeline.

[0077] Optionally, the control module 554 is further configured to determine whether the current speed of the primary side fan in the primary side liquid supply pipeline has reached the energy-saving speed; if the current speed of the primary side fan has reached the energy-saving speed, control the pressure difference target value of the primary side circulation pump in the primary side liquid supply pipeline to increase until the pressure difference target value reaches the pressure difference threshold, and then control the current speed of the primary side fan to increase; if the current speed of the primary side fan is lower than the energy-saving speed, control the current speed of the primary side fan to increase to the energy-saving speed.

[0078] Optionally, the control module 554 is further configured to control the primary-side circulation pump, primary-side fan and primary-side valve in the primary-side liquid supply pipeline in sequence if the current cooling capacity of the primary-side liquid supply pipeline is greater than the target cooling capacity, so as to reduce the cooling capacity of the primary-side liquid supply pipeline.

[0079] Optionally, the control module 554 is further configured to determine whether the target differential pressure value of the primary side circulation pump is greater than the initial value; if the target differential pressure value is greater than the initial value, control the target differential pressure value of the primary side circulation pump to decrease to the initial value, then determine whether the current speed of the primary side fan is greater than the energy-saving speed, control the current speed of the primary side fan to decrease to the energy-saving speed, and then control the opening degree of the primary side valve to decrease.

[0080] It should be noted that the structures described in the above embodiments do not constitute a limitation on the liquid cooling system control device. Each module can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the controller in the computer device, or stored in software in the memory of the computer device, so that the controller can call and execute the operations corresponding to each module. In other embodiments, the liquid cooling system control device may include more or fewer modules than those shown in the figures.

[0081] Please see Figure 4 In another aspect of the embodiments of this application, a liquid cooling system is also provided. The liquid cooling system includes a primary side liquid supply pipeline 11 for providing cooling capacity, a secondary side liquid supply pipeline 12 deployed on the side to be cooled 14, and a controller 13. A primary side valve is provided in the primary side liquid supply pipeline 11, and the controller 13 is connected to the primary side valve. The controller 13 is used to execute a computer program to implement the liquid cooling system control method described in any embodiment of this application.

[0082] Optionally, the primary side liquid supply pipeline 11 is further provided with a dry cooler, a spray device, and a primary side fan; wherein, the dry cooler is used to realize heat exchange between the liquid supply pipeline and the liquid return pipeline in the primary side liquid supply pipeline 11; the spray device includes a spray pipeline containing multiple spray heads and a spray pump connected to the spray pipeline, the spray heads are correspondingly arranged with the dry cooler, the spray pump is communicatively connected to the controller 13, and controls the spray heads to open or close the spray according to the control instructions of the controller 13; the primary side fan is correspondingly arranged with the dry cooler, and adjusts the speed according to the control instructions of the controller 13 to adjust the heat exchange efficiency of the dry cooler between the liquid supply pipeline and the liquid return pipeline accordingly.

[0083] Optionally, a primary-side circulation pump is also provided in the primary-side liquid supply line 11. The primary-side circulation pump adjusts the differential pressure target value according to the control command of the controller 13, so as to adjust the liquid flow rate in the primary-side liquid supply line 11 accordingly.

[0084] Optionally, a cold liquid distribution device (CDU) is provided in the secondary side liquid supply pipeline 12; the cold liquid distribution device includes a heat exchanger 121, a secondary side circulation pump and a secondary side valve, the secondary side circulation pump and the secondary side valve are used to regulate the liquid supply in the secondary side liquid supply pipeline 12, the heat exchanger 121 is used to realize heat exchange between the primary side liquid supply pipeline 11 and the secondary side liquid supply pipeline 12, and the heat exchange parameters include the heat exchanger coefficient.

[0085] Optionally, a first temperature sensor is installed in the primary supply pipe of the primary supply line 11, and a second temperature sensor is installed in the secondary return pipe of the secondary supply line 12. The first temperature sensor collects the primary supply temperature and sends it to the controller 13, and the second temperature sensor collects the secondary return temperature and sends it to the controller 13. A first flow sensor is also installed in the primary supply pipe of the primary supply line 11, and a second flow sensor is also installed in the secondary return pipe of the secondary supply line 12. The first flow sensor collects the supply flow rate of the primary supply line 11 and sends it to the controller 13, and the second flow sensor collects the return flow rate of the secondary supply line 12 and sends it to the controller 13.

[0086] In the liquid cooling system provided in the above embodiment, a dry cooler is installed in the primary side liquid supply line 11 to provide cooling capacity for the liquid cooling system. The dry cooler consists of a spray device and heat exchange coils. The opening degree of the primary side valve can adjust the flow rate of the coolant in the primary side circulation line. The operation of the primary side fan causes airflow through the dry cooler, achieving heat exchange between the air and the liquid inside the heat exchange coils. The spray device can be activated when the outdoor temperature is high, spraying water onto the heat exchange coils through spray nozzles to cool the coils and increase the heat exchange effect, ensuring that the cooling capacity requirement of the liquid cooling system can be met even under high outdoor temperatures. The primary side circulation pump circulates the liquid in the primary side liquid supply line 11. The high-temperature liquid after heat exchange in the CDU flows to the dry cooler, where it undergoes further heat exchange, becoming a low-temperature liquid, and is then pumped back to the CDU by the primary side circulation pump. The CDU facilitates heat exchange between the primary-side liquid supply line 11 and the secondary-side liquid supply line 12. By controlling the primary-side valve, the flow rate of liquid injected into the CDU heat exchanger through the primary-side liquid supply line 11 can be controlled, thereby controlling the heat exchanger's heat exchange capacity and achieving temperature control of the liquid supplied to the server through the secondary-side liquid supply line 12. Simultaneously, the secondary-side circulation pump and secondary-side valve can adjust the flow rate of liquid delivered to the server, thus accurately achieving server cooling control.

[0087] Please see Figure 5 In an optional specific example, in order to have a more overall understanding of the liquid cooling system control method provided in the embodiments of this application, the following example is used... Figure 4 The following description uses a data center liquid cooling system as an example. The control method of the liquid cooling system includes:

[0088] S11, acquire the secondary side flow rate and server outlet water temperature; wherein, the secondary side flow rate refers to the secondary side return flow rate in the secondary side liquid supply pipeline, that is, the flow rate of the secondary side return pipeline supplying liquid from the server to the CDU, and the server outlet water temperature refers to the secondary side return temperature in the secondary side liquid supply pipeline, that is, the temperature of the liquid flowing out of the server, which can be acquired in real time by a temperature sensor installed in the secondary side return pipeline.

[0089] S12, obtain the primary side flow rate, primary side temperature, and heat transfer coefficient of the CDU; where, the primary side flow rate refers to the primary side liquid supply flow rate in the primary side liquid supply pipeline, that is, the flow rate from the dry cooler to the CDU in the primary side liquid supply pipeline after the dry cooler releases heat; the primary side temperature refers to the primary side liquid supply temperature, which can be obtained in real time by a temperature sensor installed in the primary side liquid supply pipeline. The heat transfer coefficient of the CDU can be regarded as a constant, which can be determined based on the heat transfer coefficient of the heat exchange material used in the heat exchanger of the CDU, the heat exchange area between the primary side liquid supply pipeline and the secondary side liquid supply pipeline, or it can be obtained by pre-calibrating and testing the CDU.

[0090] S13. Based on the relationship between cooling demand, cooling capacity, and heat transfer coefficient, calculate the primary-side target flow rate matching the current cooling demand, and then adjust the opening of the primary-side valve to regulate the primary-side flow rate. The relationship between cooling demand, cooling capacity, and heat transfer coefficient satisfies the formula: F1*T1*A=F2*T2. Where F1 is the primary-side flow rate, T1 is the primary-side temperature, A is the heat transfer coefficient of the CDU, F2 is the secondary-side flow rate, and T2 is the server outlet water temperature.

[0091] The liquid cooling system control method provided in the above embodiments allows the controller to monitor the temperature and flow rate of the secondary side in real time to calculate the cooling demand that can respond promptly to changes in server heat. Based on the real-time cooling demand, the controller adjusts the opening of the primary side valve to achieve precise output of cooling capacity and precise heat dissipation control of the server.

[0092] Please see Figure 6 In another optional specific example, in order to have a more overall understanding of the liquid cooling system control method provided in the embodiments of this application, the following will still use... Figure 4 The following description uses a data center liquid cooling system as an example. The control method of the liquid cooling system includes:

[0093] S21, obtain the secondary side flow rate and server outlet water temperature to determine the cooling demand of the secondary side liquid supply pipeline;

[0094] S22, Based on the cooling demand, the relationship between the number of heat exchanges between the primary liquid supply pipeline and the secondary liquid supply pipeline and the cooling capacity of the primary liquid supply pipeline, calculate the target cooling capacity of the primary liquid supply pipeline;

[0095] S23, determine whether the current cooling capacity is less than the target cooling capacity; if it is less, proceed to S24; if it is greater, proceed to S25; if it is equal, proceed to S26.

[0096] S24, determine whether the opening degree of the primary side valve is lower than the opening degree threshold; if not, execute S241; if yes, execute S242.

[0097] S241, control the opening degree of the primary side valve to increase, return to S23;

[0098] S242, determine whether the speed of the primary side fan has reached the energy-saving speed; if not, execute S243; if yes, execute S244.

[0099] S243, control the primary side fan speed to increase, return to S23;

[0100] S244, determine whether the differential pressure target value of the primary side circulation pump has reached the differential pressure threshold; if not, execute S245; if yes, execute S246.

[0101] S245, control the primary side circulation pump to increase the target value of the differential pressure, return to S23;

[0102] S246, control the primary side fan speed to continue increasing, then return to S23;

[0103] S25, determine whether the target value of the differential pressure of the primary circulating pump is greater than the initial value; if yes, execute S251, if no, execute S252;

[0104] S251, control the target value of the differential pressure of the primary side circulation pump to decrease, and return to S23;

[0105] S252, determine whether the current speed of the primary side fan is greater than the energy-saving speed; if yes, execute S253; if no, execute S254.

[0106] S253, control the primary side fan speed to decrease, return to S23;

[0107] S254, control the opening degree of the primary side valve to decrease, return to S23;

[0108] S26, keep the current operating parameters of the primary side valve, primary side fan, and primary side circulating pump unchanged, and return to S23.

[0109] The liquid cooling system control method provided in the above embodiments involves a controller that monitors the temperature and flow rate on the secondary side in real time to calculate the cooling demand that can respond promptly to changes in server heat. Based on the real-time cooling demand, a target cooling capacity matching the current heat dissipation requirements is determined. The controller then performs coordinated control on the primary side valve, primary side fan, and primary side circulation pump in the primary side liquid supply pipeline. This ensures that the liquid cooling system operates in the most energy-efficient state while achieving accurate output of cooling capacity.

[0110] In the process of coordinated control of the primary-side valve, primary-side fan, and primary-side circulation pump in the primary-side liquid supply pipeline, when an increase in cooling capacity is required, the opening of the primary-side valve is adjusted first. Then, the pressure difference target value of the primary-side circulation pump is adjusted to keep the primary-side fan speed below the energy-saving speed. In this way, the flow resistance in the primary-side liquid supply pipeline is minimized, and the primary-side fan operates within its optimal energy efficiency range, achieving a heat exchange effect that matches the current cooling capacity supply demand. When a decrease in cooling capacity is required, the speed of the primary-side circulation pump is reduced first. Once the primary-side circulation pump speed reaches its minimum, the opening of the primary-side valve is adjusted to keep the primary-side fan speed below the energy-saving speed. In this way, the fluid resistance in the liquid cooling system is minimized until the primary-side circulation pump reaches its minimum speed, and the primary-side fan operates within its optimal energy efficiency range. Through the above control logic, the operating efficiency of the primary-side circulation pump in the liquid cooling system can be maximized, allowing the liquid cooling system as a whole to operate in the most energy-efficient state.

[0111] In another aspect, this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to perform the liquid cooling system control method described in any embodiment of this application.

[0112] It will be understood by those skilled in the art that all or part of the processes in the methods provided in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0113] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for a liquid cooling system, characterized in that, The liquid cooling system includes a primary-side liquid supply pipeline providing cooling capacity, a secondary-side liquid supply pipeline deployed on the side to be cooled, and a heat exchanger connecting the primary-side liquid supply pipeline and the secondary-side liquid supply pipeline for heat exchange. The primary-side liquid supply pipeline is equipped with a primary-side valve and a primary-side circulation pump. Obtain the secondary side return liquid temperature and secondary side return liquid flow rate in the secondary side supply liquid pipeline carrying the heat energy to be dissipated; Obtain the heat exchange parameters between the primary side liquid supply pipeline that provides cooling capacity and the secondary side liquid supply pipeline; The cooling demand of the secondary side liquid supply pipeline is determined based on the secondary side return liquid temperature and the secondary side return liquid flow rate. Based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline, the target cooling capacity of the primary side liquid supply pipeline is calculated. The primary side valve and / or the primary side circulation pump are controlled according to the target cooling capacity to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline.

2. The liquid cooling system control method as described in claim 1, characterized in that, Also includes: Obtain the primary side supply temperature of the primary side supply pipeline; The process of calculating the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline, and controlling the primary side valve and / or the primary side circulation pump according to the target cooling capacity to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline includes: Based on the cooling demand, the heat exchange parameters, and the relationship between the primary side liquid supply temperature and the cooling capacity of the primary side liquid supply pipeline, the target primary side liquid supply volume in the primary side liquid supply pipeline is calculated, and the opening degree of the primary side valve in the primary side liquid supply pipeline is controlled according to the target primary side liquid supply volume.

3. The liquid cooling system control method as described in claim 1, characterized in that, The process of calculating the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters, and the cooling capacity of the primary side liquid supply pipeline, and controlling the primary side valve and / or the primary side circulation pump according to the target cooling capacity to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline includes: Based on the relationship between the cooling demand, the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, the target cooling capacity of the primary side liquid supply pipeline is calculated. If the current cooling capacity of the primary side liquid supply line is less than the target cooling capacity, and the opening degree of the primary side valve in the primary side liquid supply line is lower than the opening degree threshold, the opening degree of the primary side valve is controlled to increase. If the current cooling capacity of the primary side liquid supply pipeline is less than the target cooling capacity and the opening degree of the primary side valve reaches the opening degree threshold, the primary side fan and the primary side circulation pump in the primary side liquid supply pipeline are controlled in sequence to increase the cooling capacity of the primary side liquid supply pipeline.

4. The liquid cooling system control method as described in claim 3, characterized in that, The sequential control of the primary-side fan and primary-side circulation pump in the primary-side liquid supply pipeline to increase the cooling capacity of the primary-side liquid supply pipeline includes: Determine whether the current speed of the primary side fan in the primary side liquid supply pipeline has reached the energy-saving speed; If the current speed of the primary side fan has reached the energy-saving speed, the pressure difference target value of the primary side circulation pump in the primary side liquid supply pipeline is increased until the pressure difference target value reaches the pressure difference threshold, and then the current speed of the primary side fan is increased. If the current speed of the primary side fan is lower than the energy-saving speed, the current speed of the primary side fan is controlled to increase to the energy-saving speed.

5. The liquid cooling system control method as described in claim 3, characterized in that, Also includes: If the current cooling capacity of the primary side liquid supply pipeline is greater than the target cooling capacity, the primary side circulation pump, primary side fan and primary side valve in the primary side liquid supply pipeline are controlled in sequence to reduce the cooling capacity of the primary side liquid supply pipeline.

6. The liquid cooling system control method as described in claim 5, characterized in that, The sequential control of the primary-side circulation pump, primary-side fan, and primary-side valve in the primary-side liquid supply pipeline to reduce the cooling capacity of the primary-side liquid supply pipeline includes: Determine whether the target pressure difference value of the primary circulating pump is greater than the initial value; If the target differential pressure value is greater than the initial value, the target differential pressure value of the primary side circulating pump is reduced to the initial value. Then, it is determined whether the current speed of the primary side fan is greater than the energy-saving speed. The current speed of the primary side fan is reduced to the energy-saving speed, and then the opening of the primary side valve is reduced.

7. A control device for a liquid cooling system, characterized in that, The liquid cooling system includes a primary-side liquid supply pipeline providing cooling capacity, a secondary-side liquid supply pipeline deployed on the side to be cooled, and a heat exchanger connecting the primary-side liquid supply pipeline and the secondary-side liquid supply pipeline for heat exchange. The primary-side liquid supply pipeline is equipped with a primary-side valve and a primary-side circulation pump. The liquid cooling system control device includes: The first acquisition module is used to acquire the secondary side return liquid temperature and secondary side return liquid flow rate in the secondary side liquid supply pipeline carrying the heat energy to be dissipated. The second acquisition module is used to acquire the heat exchange parameters between the primary side liquid supply pipeline that provides cooling capacity and the secondary side liquid supply pipeline; The demand determination module is used to determine the cooling demand of the secondary side liquid supply pipeline based on the secondary side return liquid temperature and the secondary side return liquid flow rate. The control module is used to calculate the target cooling capacity of the primary side liquid supply pipeline based on the relationship between the cooling demand, the heat exchange parameters and the cooling capacity of the primary side liquid supply pipeline, and to control the primary side valve and / or the primary side circulation pump according to the target cooling capacity to adjust the liquid flow rate and / or temperature in the primary side liquid supply pipeline.

8. A liquid cooling system, characterized in that, The system includes a primary side liquid supply pipeline that provides cooling capacity, a secondary side liquid supply pipeline deployed on the side to be cooled, a heat exchanger and a controller that connect the primary side liquid supply pipeline and the secondary side liquid supply pipeline for heat exchange, a primary side valve and a primary side circulation pump are provided in the primary side liquid supply pipeline, and the controller is used to execute the liquid cooling system control method and is connected to the primary side valve. The controller is used to execute a computer program to implement the liquid cooling system control method as described in any one of claims 1 to 6.

9. The liquid cooling system as described in claim 8, characterized in that, The primary side liquid supply pipeline is also equipped with a dry cooler, a spray device and a primary side fan; The dry cooler is used to realize heat exchange between the supply pipe and the return pipe in the primary side liquid supply pipeline; the spray device includes a spray pipeline containing multiple spray heads and a spray pump connected to the spray pipeline. The spray heads are correspondingly arranged with the dry cooler. The spray pump is communicatively connected to the controller and controls the spray heads to turn on or off spraying according to the control instructions of the controller. The primary side fan is configured correspondingly to the dry cooler, and its speed is adjusted according to the control command of the controller to adjust the heat exchange efficiency of the dry cooler between the liquid supply pipe and the liquid return pipe.

10. The liquid cooling system as described in claim 8, characterized in that, The primary-side circulation pump adjusts the differential pressure target value according to the control command of the controller, so as to adjust the liquid flow rate in the primary-side liquid supply pipeline accordingly.

11. The liquid cooling system as described in claim 8, characterized in that, The secondary side liquid supply pipeline is equipped with a cold liquid distribution device; The cold liquid distribution device includes a heat exchanger, a secondary side circulation pump, and a secondary side valve. The secondary side circulation pump and the secondary side valve are used to regulate the liquid supply in the secondary side supply pipeline. The heat exchanger is used to realize heat exchange between the primary side supply pipeline and the secondary side supply pipeline. The heat exchange parameters include the heat exchanger coefficient.

12. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it causes the processor to perform the liquid cooling system control method as described in any one of claims 1 to 6.

Images