Data center, liquid cooling system and control method of liquid cooling system

Abstract

The embodiment of the invention discloses a data center, a liquid cooling system and a control method of the liquid cooling system. The liquid cooling system comprises a cooling capacity distribution unit; each heating device is provided with a liquid inlet pipeline and a liquid outlet pipeline, and the liquid inlet pipelines and the liquid outlet pipelines are connected with the cooling capacity distribution unit; the control valve is arranged on the liquid inlet pipeline or the liquid outlet pipeline and used for controlling the flow of the cooling medium; the measuring unit is used for measuring characteristic information of the flow of the heating equipment; the control unit is in communication connection with the control valve and the measuring unit, the control unit is used for obtaining the feature information, the control unit is further used for comparing whether the feature information is consistent with preset information or not, and when the feature information is not consistent with the preset information, the control unit is further used for controlling and adjusting the opening degree of the control valve of the heating equipment. The liquid cooling system can realize reasonable distribution of the cooling medium, and can improve the utilization efficiency of the cooling medium and the loading capacity of the cooling capacity distribution unit.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of liquid cooling technology, and in particular, to a data center, a liquid cooling system, and a control method for the liquid cooling system. Background Art

[0002] With the rapid development of communication technology, the integration and heat density of data centers are getting higher and higher, and the demand for heat dissipation is increasing. The traditional air-cooling heat dissipation mode is not only energy-intensive and environmentally unfriendly, but also increasingly difficult to meet the requirements. In recent years, liquid cooling technology, as an advanced cooling technology, has gradually been applied to the cooling and heat dissipation of data centers. It can not only effectively solve the heat dissipation problem of data centers, but also bring lower power usage efficiency (Power Usage Effectiveness, PUE).

[0003] In the related art, a data center includes multiple heat generating devices, and the heat dissipation requirements of each heat generating device are different according to different configurations. When different heat generating devices are deployed in parallel, the flow distribution problem between the heat generating devices becomes a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The embodiments of the present application provide a data center, a liquid cooling system, and a control method for the liquid cooling system, wherein the liquid cooling system can achieve reasonable distribution of cooling medium, improve the utilization efficiency of the cooling medium and the load capacity of the cooling distribution unit.

[0005] A first aspect of an embodiment of the present application provides a liquid cooling system, comprising: a cooling capacity distribution unit; a plurality of heating devices, each of which is equipped with a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline and the liquid outlet pipeline are both connected to the cooling capacity distribution unit, the liquid inlet pipeline is used to introduce the cooling medium of the cooling capacity distribution unit into the heating device, and the liquid outlet pipeline is used to lead the cooling medium of the heating device out to the cooling capacity distribution unit; a control valve, the control valve is arranged on the liquid inlet pipeline or on the liquid outlet pipeline, the control valve is used to control the flow rate of the cooling medium; a measuring unit, is used to measure characteristic information of the flow rate of the heating device; a control unit, is communicatively connected to the control valve and the measuring unit, the control unit is used to obtain characteristic information, and the control unit is also used to compare whether the characteristic information is consistent with the preset information, and when the characteristic information is inconsistent with the preset information, the control unit is also used to control the opening of the control valve of the heating device.

[0006] In the above scheme, by comparing the characteristic information with the preset information, the control unit can accurately determine whether the actual flow of the heating device is consistent with the flow demand. When the two are inconsistent, the control unit can control and adjust the opening of the control valve of the corresponding heating device to increase or decrease the actual flow of the heating device, so that the actual flow of the heating device can meet the flow demand. In this way, each heating device can be effectively cooled, the working state of each heating device can be guaranteed, and the reasonable distribution of the cooling medium can be achieved, which can improve the utilization efficiency of the cooling medium and the load capacity of the cooling distribution unit, so that the entire computing device data center can work in an efficient state.

[0007] In some optional implementations, the measuring unit includes a first pressure measuring component and a second pressure measuring component. The first pressure measuring component is arranged in the liquid inlet pipeline to measure the liquid inlet pressure, and the second pressure measuring component is arranged in the liquid outlet pipeline to measure the liquid outlet pressure. The difference between the liquid inlet pressure and the liquid outlet pressure is the first pressure difference. When the liquid inlet pipeline is provided with a control valve, the first pressure measuring component is located downstream of the control valve of the liquid inlet pipeline; or, when the liquid outlet pipeline is provided with a control valve, the second pressure measuring component is located upstream of the control valve of the liquid outlet pipeline. The characteristic information is the first pressure difference, and the preset information is the first preset pressure difference between the liquid inlet pipeline and the liquid outlet pipeline. The control unit is specifically used to compare whether the first pressure difference and the first preset pressure difference are consistent. When the first pressure difference and the first preset pressure difference are inconsistent, the control unit is also used to control the opening of the control valve of the heating device.

[0008] This implementation method can well judge whether the actual flow rate of the heating device is consistent with the flow rate requirement by comparing the first pressure difference between the liquid inlet pipeline and the liquid outlet pipeline and the first preset pressure difference, and the structure is simple. In addition, this implementation method can control the installation position of the control valve. For example, the first pressure measuring component is arranged downstream of the control valve of the liquid inlet pipeline to reduce the influence of the control valve on the pressure test performed by the measuring unit, which is conducive to improving the accuracy of pressure monitoring.

[0009] In some optional implementations, the measuring unit includes a first differential pressure measuring component, which is arranged between the liquid inlet pipeline and the liquid outlet pipeline, and is used to detect a first pressure difference between the liquid inlet pipeline and the liquid outlet pipeline; when the liquid inlet pipeline is provided with a control valve, the connection position of the first differential pressure measuring component and the liquid inlet pipeline is located downstream of the control valve of the liquid inlet pipeline; or, when the liquid outlet pipeline is provided with a control valve, the connection position of the first differential pressure measuring component and the liquid outlet pipeline is located upstream of the control valve of the liquid outlet pipeline; the characteristic information is the first pressure difference, the preset information is the first preset pressure difference between the liquid inlet pipeline and the liquid outlet pipeline, and the control unit is used to compare whether the first pressure difference and the first preset pressure difference are consistent. When the first pressure difference and the first preset pressure difference are inconsistent, the control unit is also used to control the opening of the control valve of the heating device.

[0010] This implementation adopts the first pressure difference measuring component to measure the first pressure difference, which can reduce the number of parts used in the measuring unit, further simplify the structure, reduce the cost, and reduce the error in the measurement calculation, which is conducive to ensuring the accuracy of the measurement calculation.

[0011] In some optional implementations, the measuring unit includes a third pressure measuring component and a fourth pressure measuring component, the third pressure measuring component and the fourth pressure measuring component are respectively arranged on both sides of the control valve, and the difference between the pressures measured by the third pressure measuring component and the fourth pressure measuring component is a second pressure difference; or, the measuring unit includes a second pressure difference measuring component, the second pressure difference measuring component is respectively connected to both sides of the control valve, and the second pressure difference measuring component is used to detect the second pressure difference on both sides of the control valve; the characteristic information is the second pressure difference, the preset information is the second preset pressure difference on both sides of the control valve, and the control unit is specifically used to compare whether the second pressure difference and the second preset pressure difference are consistent. When the second pressure difference and the second preset pressure difference do not match, the control unit is also used to control the opening of the control valve of the heating device.

[0012] This implementation method can well judge whether the actual flow rate of the heating device is consistent with the flow rate requirement by comparing the second pressure difference on both sides of the control valve with the second preset pressure difference, and the structure is simple. In addition, when the second pressure difference is measured by the second pressure difference measuring component, the number of parts used in the measuring unit can be reduced, the structure can be further simplified, the cost can be reduced, and the error in the measurement calculation can be reduced, which is conducive to ensuring the accuracy of the measurement calculation.

[0013] In some optional implementations, the measuring unit includes a flow measurement component, the flow measurement component is arranged in the liquid inlet pipeline or the liquid outlet pipeline, and the flow measurement component is used to detect the characteristic flow of the liquid inlet pipeline or the liquid outlet pipeline; the characteristic information is the characteristic flow, and the preset information is the preset flow of the liquid inlet pipeline or the liquid outlet pipeline. The control unit is specifically used to compare the characteristic flow and the preset flow. When the characteristic flow and the preset flow do not match, the control unit is also used to control the opening of the control valve of the heating device. This implementation directly detects the characteristic flow, and the obtained characteristic information does not need to be calibrated with the flow information, and the operation is simpler.

[0014] In some optional implementations, the flow measurement component is integrated into the control valve, so that the integration of the device can be higher.

[0015] In some optional implementations, a heating device is provided in the heating device, and the measuring unit includes a temperature measuring component, which is provided in the heating device, and the temperature measuring component is used to measure a characteristic temperature that can characterize the temperature of the heating device, the characteristic information is the characteristic temperature, and the preset information is the preset temperature. The control unit is specifically used to compare the characteristic temperature with the preset temperature, and when the characteristic temperature and the preset temperature do not match, the control unit is also used to control the opening of the control valve of the heating device. This implementation method can well judge whether the actual flow of the heating device matches the flow demand by comparing the characteristic temperature and the preset temperature in the heating device, and the structure is simple.

[0016] In some optional implementations, the heat generating device is a server; or, the heat generating device is a server node, and a plurality of server nodes are integrated and assembled in a cabinet.

[0017] When the heat generating device is a server, the cold distribution unit can be separately provided so as to be independent of each server; of course, the cold distribution unit can also be integrated and assembled in a certain server, for example, it can be installed in a cabinet of a certain server. When the heat generating device is a server node, the cold distribution unit can be integrated and assembled in the server, for example, it can be installed in a cabinet of the server, or the cold distribution unit can also be installed as a module inside the cabinet; of course, the cold distribution unit can also be separately provided as an independent component, which is also feasible.

[0018] In the second aspect, an embodiment of the present application also provides a control method for a liquid cooling system, the liquid cooling system includes multiple heating devices, each heating device is configured with a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline is used to introduce cooling medium into the heating device, and the liquid outlet pipeline is used to lead the cooling medium out of the heating device, at least one of the liquid inlet pipeline and the liquid outlet pipeline is configured with a control valve, the control method includes: obtaining characteristic information that can characterize the actual flow of the heating device; comparing the characteristic information with preset information to see if they are consistent, if not, executing the following adjustment steps; the preset information can characterize the flow demand of the heating device; adjusting the opening of the control valve of the heating device.

[0019] In the above control method, by comparing the characteristic information with the preset information, the embodiment of the present application can accurately determine whether the actual flow of the heating device is consistent with the flow demand. When the two are inconsistent, the opening of the control valve of the corresponding heating device can be controlled to increase or decrease the actual flow of the heating device, so that the actual flow of the heating device can meet the flow demand. In this way, each heating device can be effectively cooled, the working state of each heating device can be guaranteed, and the reasonable allocation of the cooling medium can be achieved, which can improve the utilization efficiency of the flow and the load capacity of the cooling distribution unit, so that the entire computing device data center can work in an efficient state.

[0020] In a third aspect, an embodiment of the present application further provides a data center, including a liquid cooling system and a cooling tower. The liquid cooling system is the liquid cooling system involved in each implementation method of the first aspect. The cooling capacity distribution unit of the liquid cooling system and the cooling tower perform heat exchange.

[0021] Based on the liquid cooling system involved in the first aspect mentioned above, the data center provided in the embodiment of the present application can also realize the reasonable distribution of cooling medium in each heat-generating device, which can improve the utilization efficiency of the flow rate and the load capacity of the cooling distribution unit, so that the entire computing equipment data center can operate in an efficient state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A simplified structural diagram of a data center provided in an embodiment of the present application;

[0023] Figure 2 A structural diagram of a first liquid cooling system provided in an embodiment of the present application;

[0024] Figure 3 A structural diagram of a second liquid cooling system provided in an embodiment of the present application;

[0025] Figure 4 A structural diagram of a third liquid cooling system provided in an embodiment of the present application;

[0026] Figure 5A structural diagram of a fourth liquid cooling system provided in an embodiment of the present application;

[0027] Figure 6 A structural diagram of a fifth liquid cooling system provided in an embodiment of the present application;

[0028] Figure 7 A structural diagram of a sixth liquid cooling system provided in an embodiment of the present application;

[0029] Figure 8 A flow chart of a control method for a data center provided in an embodiment of the present application.

[0030] The following are the descriptions of the reference numerals:

[0031] 100 servers, 110 cabinets, 120 server nodes, 130 inlet pipelines, 140 outlet pipelines, 150 control valves,

[0032] 100a first pressure measuring component, 100b second pressure measuring component, 100c first differential pressure measuring component, 100d third pressure measuring component, 100e fourth pressure measuring component, 100f second differential pressure measuring component, 100g flow measuring component;

[0033] 200 cooling capacity distribution unit, 210 heat exchange module;

[0034] 300 cooling tower;

[0035] 400 control units. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] In the description of the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0038] In the description of the embodiments of the present application, the term "plurality" refers to two or more than two. Moreover, when "plurality" is used to describe the number of different components, it does not indicate the relationship between the components in terms of quantity.

[0039] In the description of the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0040] Please refer to Figure 1 , Figure 1 This is a simplified structural diagram of a data center provided in an embodiment of the present application.

[0041] like Figure 1 As shown, an embodiment of the present application provides a data center, including multiple heat-generating devices, a cooling distribution unit (CDU) 200 and a cooling tower 300, wherein the cooling distribution unit 300 and the heat-generating devices constitute a liquid cooling system of the data center.

[0042] The liquid cooling system also includes a connecting pipeline connected between the cold distribution unit 200 and each heat generating device, and the connecting pipeline is used to provide a cooling medium for each heat generating device, thereby realizing cooling and heat dissipation of each heat generating device. The cooling medium can be, for example, water or a liquid containing specific components such as a fluorinated liquid. In an embodiment of the present application, the direction of flow of the cooling medium can be used to define the orientation and positional relationship of the upstream and downstream. Specifically, for components A and B, if A is defined to be located upstream of B, then the cooling medium can flow from A to B. If A is defined to be located downstream of B, then the cooling medium can flow from B to A.

[0043] The cooling tower 300 may be an open cooling device, or may be a closed cooling device. The cooling tower 300 is used to provide a cold source medium, which may be water, for example.

[0044] A heat exchange module 210 is provided in the cold distribution unit 200. The heat exchange module 210 can be, for example, a heat exchange device in the form of a plate heat exchanger. The cooling medium returning from the heating device can exchange heat with the cold source medium from the cooling tower 300 at the heat exchange module 210, so as to ensure that the cooling medium supplied to the heating device by the cold distribution unit 200 can have a relatively low temperature, thereby improving the cooling and heat dissipation effect of the heating device.

[0045] In some implementations, the heat generating device may specifically be a server 100, for example, a cabinet server. In this case, the heat generating device may include a cabinet 110 and a heat generating module disposed inside the cabinet 110. The heat generating module may specifically be a server node 120, and the number of the heat generating modules may be multiple. Each server 100 may be configured with a liquid inlet pipeline 130 and a liquid outlet pipeline 140, and the cold distribution unit 200 may be connected to the liquid inlet pipeline 130 and the liquid outlet pipeline 140 of each server 100 to realize the circulation of the cooling medium inside each server 100. In this implementation, the cold distribution unit 200 may be separately provided to be independent of each server 100. Of course, the cold distribution unit 200 may also be integrated and assembled on a certain server 100, for example, it may be installed on the cabinet 110 of a certain server 100.

[0046] In other implementations, the heat generating device may also be a server node 120 inside a cabinet server, each server node 120 may be configured with a liquid inlet pipeline 130 and a liquid outlet pipeline 140, and the cold distribution unit 200 may be connected to the liquid inlet pipeline 130 and the liquid outlet pipeline 140 of each server node 120 to realize the circulation of the cooling medium inside each server node 120, which is also feasible. In this implementation, the cold distribution unit 200 may be integrated and assembled in the server 100, for example, it may be installed on the cabinet 110 of the server 100, or the cold distribution unit 200 may also be installed as a module inside the cabinet 110. Of course, the cold distribution unit 200 may also be provided separately as an independent component, which is also feasible.

[0047] As mentioned in the background technology section, in the case of multiple heating devices being set up in parallel, the flow distribution between the heating devices is a technical problem that needs to be solved urgently. If it is not controlled, the heating devices with low pressure drop will consume more flow due to their low internal running resistance, resulting in low flow utilization efficiency, reduced load capacity of the cooling distribution unit, and easily causing low efficiency and high cost.

[0048] In view of this, in an embodiment of the present application, at least one of the liquid inlet pipeline 130 and the liquid outlet pipeline 140 of each heating device is configured with a control valve; and the liquid cooling system also includes a control unit 400 and a measuring unit, the control unit 400 and the measuring unit and each control valve are communicatively connected, the measuring unit is used to detect characteristic information that can characterize the actual flow of the heating device, the control unit 400 is used to obtain the characteristic information, and the control unit 400 is also used to compare whether the characteristic information is consistent with the preset information. When the characteristic information is inconsistent with the preset information, the control unit 400 is also used to control the opening of the control valve of the heating device; the preset information can characterize the flow demand of the heating device.

[0049] By adopting the above scheme, the control unit 400 can accurately determine whether the actual flow of the heating device is consistent with the flow demand by comparing the characteristic information with the preset information. When the two are inconsistent, the control unit 400 can control and adjust the opening of the control valve of the corresponding heating device to increase or decrease the actual flow of the heating device, so that the actual flow of the heating device can meet the flow demand. In this way, each heating device can be effectively cooled, the working state of each heating device can be guaranteed, and the reasonable distribution of the cooling medium can be achieved, which can improve the utilization efficiency of the flow and the load capacity of the cooling distribution unit 200, so that the entire data center can work in an efficient state.

[0050] It should be understood that the "matching" here means being roughly consistent, and does not require that the characteristic information and the preset information are completely consistent, and can be specifically determined according to the types of the characteristic information and the preset information, etc. For example, when the characteristic information and the preset information are both flow information, the preset information can be a preset interval, and as long as the characteristic information is within the preset interval, the characteristic information and the preset information can be considered to be consistent, or a deviation interval can be set, and as long as the ratio of the characteristic information to the preset information, or the difference between the characteristic information and the preset information is within the deviation interval, the characteristic information and the preset information can be considered to be consistent.

[0051] The control unit 400 and the heating device may be arranged in a one-to-one correspondence, so that each heating device may be configured with a control unit 400, so that each heating device may be controlled individually. Alternatively, the control unit 400 and the heating device may be arranged in a one-to-many matching relationship, that is, at least two heating devices may be controlled by the same control unit 400, so that the number of control units 400 may be reduced and the structure of the device may be simplified.

[0052] During specific assembly, the control unit 400 can be integrated into the heating device or the cooling distribution unit 200 to improve the integration of the device. Alternatively, the control unit 400 can also be an independent component as long as it can realize the control of the corresponding control valve.

[0053] The preset information can be input manually. Alternatively, the preset information can also be pre-stored in the corresponding heating device, and can be read by the control unit 400 in specific applications. Alternatively, the preset information can also be directly pre-stored in the control unit 400.

[0054] Please refer to Figure 2 and Figure 3 , Figure 2 This is a structural diagram of the first liquid cooling system provided in the embodiment of the present application. Figure 3 This is a structural diagram of a second liquid cooling system provided in an embodiment of the present application.

[0055] like Figure 2 As shown, in a first implementation, the heat generating device may be a server 100 , and each server 100 may be configured with a liquid inlet pipeline 130 and a liquid outlet pipeline 140 .

[0056] The characteristic information may specifically be the first pressure difference between the inlet pipe 130 and the outlet pipe 140; accordingly, the preset information may also be the first preset pressure difference between the inlet pipe 130 and the outlet pipe 140. It should be understood that by obtaining the first pressure difference, the flow rate of the cooling medium passing through the heat generating device may be calculated, and therefore, the first pressure difference may represent the actual flow rate of the heat generating device.

[0057] In practical applications, after obtaining the first pressure difference, the control unit 400 may also obtain the characteristic flow corresponding to the first pressure difference by looking up a table, etc., so that the characteristic information may also be the characteristic flow. Accordingly, the preset information may also be the preset flow.

[0058] Specifically, the measuring unit may include a first pressure measuring component 100a and a second pressure measuring component 100b; the inlet pipeline 130 may be provided with a first pressure measuring component 100a, and the first pressure measuring component 100a is used to measure the inlet pressure; the outlet pipeline 140 may be provided with a second pressure measuring component 100b, and the second pressure measuring component 100b is used to measure the outlet pressure; the above-mentioned first pressure difference may be the difference between the inlet pressure and the outlet pressure. The first pressure measuring component 100a and the second pressure measuring component 100b may both be connected to the control unit 400 for communication, and the control unit 400 may obtain the above-mentioned inlet pressure and outlet pressure, and may calculate the first pressure difference through the inlet pressure and outlet pressure.

[0059] exist Figure 2 In the implementation of the embodiment of the present application, the liquid inlet pipeline 130 may be provided with a control valve 150. In this case, the first pressure measuring component 100a may be located downstream of the control valve 150 of the liquid inlet pipeline 130, that is, between the control valve 150 of the liquid inlet pipeline 130 and the server 100, so as to detect the liquid inlet pressure at the downstream position of the control valve 150, which can largely avoid the influence of the control valve 150 on the liquid inlet pressure detection. In addition, in some other implementations of the embodiment of the present application, the liquid outlet pipeline 140 may also be provided with a control valve 150. In this case, the second pressure measuring component 100b may be located upstream of the control valve 150 of the liquid outlet pipeline 140, that is, between the control valve 150 of the liquid outlet pipeline 140 and the server 100, so as to detect the liquid outlet pressure at the upstream position of the control valve 150, which can largely avoid the influence of the control valve 150 on the liquid outlet pressure detection.

[0060] It should be understood that both the liquid inlet pipeline 130 and the liquid outlet pipeline 140 may be provided with a control valve 150 , or only one of the liquid inlet pipeline 130 and the liquid outlet pipeline 140 may be provided with a control valve 150 .

[0061] like Figure 3 As shown, in the second implementation, the heat generating device may be a server node 120, each server node 120 may be configured with a liquid inlet pipeline 130 and a liquid outlet pipeline 140, and the control valve 150 may be disposed in the liquid inlet pipeline 130 or in the liquid outlet pipeline 140. In this embodiment, the first pressure difference may also be obtained by disposing a first pressure measuring component 100a and a second pressure measuring component 100b, and the details may refer to the above description, and no repeated description is given here.

[0062] Please refer to Figure 4 , Figure 4 This is a structural diagram of the third liquid cooling system provided in an embodiment of the present application.

[0063] In the third implementation, Figure 4 As shown, the main difference from the first implementation manner and the second implementation manner is that the structural form of the measuring unit is different.

[0064] In this implementation, the measuring unit may include a first differential pressure measuring component 100c, which may be disposed between the liquid inlet pipeline 130 and the liquid outlet pipeline 140, and is used to detect the first differential pressure. The first differential pressure measuring component 100c may be connected to the control unit 400 for communication, and the control unit 400 may directly obtain the first differential pressure from the first differential pressure measuring component 100c. Compared with the first and second implementations, the present implementation can use a relatively small number of components of the measuring unit, a relatively simple structure, and a relatively low cost, and can reduce errors in measurement calculations, which is conducive to ensuring the accuracy of measurement calculations.

[0065] exist Figure 4In the implementation of the embodiment of the present application, the control valve 150 can be arranged in the liquid inlet pipeline 130. In this case, the connection position of the first differential pressure measuring component 100c and the liquid inlet pipeline 130 can be located downstream of the control valve 150 of the liquid inlet pipeline 130, that is, it can be located between the control valve 150 of the liquid inlet pipeline 130 and the server 100, so as to reduce the influence of the control valve 150 on the pressure difference measurement. In addition, in some other implementations of the embodiment of the present application, the control valve 150 can also be arranged in the liquid outlet pipeline 140. In this case, the connection position of the first differential pressure measuring component 100c and the liquid outlet pipeline 140 can be located upstream of the control valve 150 of the liquid outlet pipeline 140, that is, it can be located between the control valve 150 of the liquid outlet pipeline 140 and the server 100, which can also reduce the influence of the control valve 150 on the pressure difference measurement. It should be understood that at least one of the liquid inlet pipeline 130 and the liquid outlet pipeline 140 is provided with the control valve 150.

[0066] Please refer to Figure 5 , Figure 5 This is a structural diagram of the fourth liquid cooling system provided in an embodiment of the present application.

[0067] In the fourth implementation, if Figure 5 As shown, the main difference from the first implementation manner and the second implementation manner is that the arrangement positions of the measuring units are different.

[0068] In this implementation, the characteristic information may specifically be the second pressure difference between the two sides of the control valve 150; it should be understood that by obtaining the second pressure difference between the two sides of the control valve 150, the flow rate of the cooling medium passing through the control valve 150, that is, the flow rate of the cooling medium passing through the heat generating device, can be calculated, and therefore, the second pressure difference may represent the actual flow rate of the heat generating device. Accordingly, the preset information may also be the second preset pressure difference between the two sides of the control valve 150.

[0069] In practical applications, after obtaining the second pressure difference between the two sides of the control valve 150, the control unit 400 can also obtain the characteristic flow corresponding to the second pressure difference by looking up a table, etc. In this way, the above-mentioned characteristic information can also be the characteristic flow. Correspondingly, the above-mentioned preset information can also be the preset flow.

[0070] Specifically, the measuring unit may include a third pressure measuring component 100d and a fourth pressure measuring component 100e, and the third pressure measuring component 100d and the fourth pressure measuring component 100e may be respectively disposed on both sides of the control valve 150, and the second pressure difference may be the difference between the pressures measured by the third pressure measuring component 100d and the fourth pressure measuring component 100e. The third pressure measuring component 100d and the fourth pressure measuring component 100e may both be connected to the control unit 400 for communication, and the control unit 400 may obtain the pressure values ​​measured by the third pressure measuring component 100d and the fourth pressure measuring component 100e, and may calculate the second pressure difference through the measured pressure values.

[0071] Please refer to Figure 6 , Figure 6 This is a structural diagram of the fifth liquid cooling system provided in an embodiment of the present application.

[0072] In the fifth implementation, Figure 6 As shown, the main difference from the aforementioned fourth implementation manner is the different structural form of the measuring unit.

[0073] In this implementation, the measuring unit is a second differential pressure measuring component 100f, which is respectively connected to both sides of the control valve 150, and then the second differential pressure measuring component 100f is used to detect the second differential pressure, and the control unit 400 is connected to the second differential pressure measuring component 100f in communication, so as to directly obtain the second differential pressure through the second differential pressure measuring component 100f. In this way, the number of parts of the measuring unit can be relatively small, the structure can be relatively simple, the cost can be relatively low, and the error in the measurement calculation can be reduced, which is conducive to ensuring the accuracy of the measurement calculation.

[0074] Please refer to Figure 7 , Figure 7 This is a structural diagram of the sixth liquid cooling system provided in an embodiment of the present application.

[0075] In the sixth implementation, if Figure 7 As shown, the main difference from the first to fifth implementations mentioned above is the different structural forms of the measuring units.

[0076] In this implementation, the characteristic information may specifically be the characteristic flow of the inlet pipeline 130 or the outlet pipeline 140, and accordingly, the preset information may also be the preset flow of the inlet pipeline 130 or the outlet pipeline 140. To this end, the measuring unit may be a flow measuring component 100g, which may be disposed in the inlet pipeline 130 or the outlet pipeline 140, and the flow measuring component 100g may be used to detect the characteristic flow, and the flow measuring component 100g may be connected to the control unit 400 for communication, and the control unit 400 may directly obtain the characteristic flow through the flow measuring component 100g.

[0077] The flow measurement component 100 g may be located upstream of the control valve 150 or downstream of the control valve 150 .

[0078] In fact, the control valve 150 itself can also have a flow calibration function, so that the control valve 150 itself can detect the above characteristic flow. At this time, the flow measurement component 100g is equivalent to being integrated inside the control valve 150, and the integration of the device can be higher.

[0079] In addition to the measurement components involved in the aforementioned implementations, the measurement unit may also include a temperature measurement component.

[0080] A heating device is provided in the heating equipment, and the heating device may be, for example, an electronic device in the form of a mainboard, a hard disk, a chip, etc. The characteristic information may be a characteristic temperature that can characterize the temperature of the heating device. A temperature measuring component may be provided in the heating device, and the temperature measuring component is used to measure the above-mentioned characteristic temperature. The control unit 400 may be connected to the temperature measuring component in communication, and is used to obtain the characteristic temperature through the temperature measuring component. It should be understood that there is a correlation between the characteristic temperature of the heating device and the actual flow rate. When the flow rate of the cooling medium is large, the temperature of the heating device is relatively low. Therefore, the actual flow rate can also be characterized by measuring the characteristic temperature.

[0081] The temperature measuring component can directly measure the temperature of the heating device, or can also indirectly obtain the temperature of the heating device by measuring the temperature of the environment where the heating device is located. The temperature measuring component can be, for example, a thermocouple sensor, a thermistor sensor, a platinum thermal resistor sensor, etc.

[0082] Please refer to Figure 8 , Figure 8 A flow chart of a control method for a liquid cooling system provided in an embodiment of the present application.

[0083] like Figure 8As shown, the embodiment of the present application also provides a control method for a liquid cooling system, which is applicable to the liquid cooling system involved in the above-mentioned implementation methods. The control method includes: a first acquisition step S1, acquiring characteristic information that can characterize the actual flow of the heating device; a comparison step S2, comparing whether the characteristic information and the preset information are consistent, if not, executing the following adjustment steps; the preset information can characterize the flow demand of the heating device; an adjustment step S3, adjusting the opening of the control valve 150 of the heating device.

[0084] In this way, by comparing the characteristic information with the preset information, the control unit 400 can accurately determine whether the actual flow of the heating device is consistent with the flow demand. When the two are inconsistent, the control unit 400 can control the opening of the control valve 150 of the corresponding heating device to increase or decrease the actual flow of the heating device, so that the actual flow of the heating device can meet the flow demand, each heating device can obtain effective heat dissipation, the working state of each heating device can be guaranteed, and the reasonable distribution of the cooling medium can be achieved, which can improve the utilization efficiency of the flow and the load capacity of the cooling distribution unit 200, so that the entire liquid cooling system can operate in an efficient state.

[0085] Before the comparison step S2, the control method may further include: a second acquisition step S0, acquiring preset information. The preset information may be a manually input value, or the preset information may be pre-stored in each heating device so as to be acquired when in use.

[0086] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A liquid cooling system, characterized in that: include: Cooling distribution unit; A plurality of heating devices, each of which is equipped with a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline and the liquid outlet pipeline are both connected to the cold distribution unit, the liquid inlet pipeline is used to introduce the cooling medium of the cold distribution unit into the heating device, and the liquid outlet pipeline is used to lead the cooling medium of the heating device out to the cold distribution unit; A control valve, the control valve being arranged on the liquid inlet pipeline or the liquid outlet pipeline, and the control valve being used to control the flow rate of the cooling medium; A measuring unit, used to measure characteristic information of the flow rate of the heat generating device; A control unit is communicatively connected to the control valve and the measuring unit. The control unit is used to obtain the characteristic information, and the control unit is also used to compare whether the characteristic information is consistent with the preset information. When the characteristic information is inconsistent with the preset information, the control unit is also used to control and adjust the opening of the control valve of the heating device.

2. The liquid cooling system according to claim 1, characterized in that: The measuring unit comprises a first pressure measuring component and a second pressure measuring component, the first pressure measuring component is arranged in the liquid inlet pipeline for measuring the liquid inlet pressure, the second pressure measuring component is arranged in the liquid outlet pipeline for measuring the liquid outlet pressure, and the difference between the liquid inlet pressure and the liquid outlet pressure is a first pressure difference; when the liquid inlet pipeline is provided with the control valve, the first pressure measuring component is located downstream of the control valve in the liquid inlet pipeline; or when the liquid outlet pipeline is provided with the control valve, the second pressure measuring component is located upstream of the control valve in the liquid outlet pipeline; The characteristic information is the first pressure difference, the preset information is the first preset pressure difference between the liquid inlet pipeline and the liquid outlet pipeline, and the control unit is specifically used to compare whether the first pressure difference and the first preset pressure difference are consistent. When the first pressure difference and the first preset pressure difference do not match, the control unit is also used to control and adjust the opening of the control valve of the heating device.

3. The liquid cooling system according to claim 1, characterized in that: The measuring unit comprises a first differential pressure measuring component, which is arranged between the liquid inlet pipeline and the liquid outlet pipeline and is used to detect a first pressure difference between the liquid inlet pipeline and the liquid outlet pipeline; When the liquid inlet pipeline is provided with the control valve, the connection position of the first differential pressure measuring component and the liquid inlet pipeline is located downstream of the control valve of the liquid inlet pipeline; or, when the liquid outlet pipeline is provided with the control valve, the connection position of the first differential pressure measuring component and the liquid outlet pipeline is located upstream of the control valve of the liquid outlet pipeline; The characteristic information is the first pressure difference, the preset information is the first preset pressure difference between the liquid inlet pipeline and the liquid outlet pipeline, and the control unit is specifically used to compare whether the first pressure difference and the first preset pressure difference are consistent. When the first pressure difference and the first preset pressure difference do not match, the control unit is also used to control and adjust the opening of the control valve of the heating device.

4. The liquid cooling system according to claim 1, characterized in that: The measuring unit comprises a third pressure measuring component and a fourth pressure measuring component, the third pressure measuring component and the fourth pressure measuring component are respectively arranged on both sides of the control valve, and the difference between the pressures measured by the third pressure measuring component and the fourth pressure measuring component is a second pressure difference; or, The measuring unit comprises a second differential pressure measuring component, the second differential pressure measuring component is respectively connected to two sides of the control valve, and the second differential pressure measuring component is used to detect a second pressure difference between the two sides of the control valve; The characteristic information is the second pressure difference, the preset information is the second preset pressure difference on both sides of the control valve, and the control unit is specifically used to compare whether the second pressure difference is consistent with the second preset pressure difference. When the second pressure difference is inconsistent with the second preset pressure difference, the control unit is also used to control and adjust the opening of the control valve of the heating device.

5. The liquid cooling system according to claim 1, characterized in that: The measuring unit comprises a flow measuring component, the flow measuring component is arranged in the liquid inlet pipeline or the liquid outlet pipeline, and the flow measuring component is used to detect the characteristic flow of the liquid inlet pipeline or the liquid outlet pipeline; The characteristic information is the characteristic flow, the preset information is the preset flow of the liquid inlet pipeline or the liquid outlet pipeline, and the control unit is specifically used to compare the characteristic flow and the preset flow. When the characteristic flow and the preset flow do not match, the control unit is also used to control and adjust the opening of the control valve of the heating device.

6. The liquid cooling system according to claim 5, characterized in that: The flow measurement component is integrated with the control valve.

7. The liquid cooling system according to claim 1, characterized in that: The heating device is provided with a heating element, and the measuring unit comprises a temperature measuring component, the temperature measuring component is provided in the heating device, and the temperature measuring component is used to measure a characteristic temperature that can characterize the temperature of the heating element; The characteristic information is the characteristic temperature, the preset information is the preset temperature, and the control unit is specifically used to compare the characteristic temperature with the preset temperature. When the characteristic temperature and the preset temperature do not match, the control unit is also used to control and adjust the opening of the control valve of the heating device.

8. The liquid cooling system according to any one of claims 1 to 6, characterized in that: The heat generating device is a server; or, the heat generating device is a server node, and a plurality of the server nodes are integrated and assembled in a cabinet.

9. A control method for a liquid cooling system, characterized in that: The liquid cooling system includes a plurality of heat generating devices, each of which is provided with a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet pipeline is used to introduce a cooling medium into the heat generating device, the liquid outlet pipeline is used to lead the cooling medium out of the heat generating device, at least one of the liquid inlet pipeline and the liquid outlet pipeline is provided with a control valve, and the control method includes: Acquire characteristic information capable of characterizing the actual flow rate of the heat generating device; Compare the characteristic information with the preset information to see if they are consistent, and if not, adjust the opening of the control valve of the heating device.

10. A data center, characterized in that: It comprises a liquid cooling system and a cooling tower, wherein the liquid cooling system is the liquid cooling system according to any one of claims 1 to 8, and the cooling capacity distribution unit of the liquid cooling system exchanges heat with the cooling tower.

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