Liquid cooling system

Abstract

The utility model provides a liquid cooling system. The system comprises a heat exchange module and an equipment module. Wherein the primary side input end of the heat exchange module is connected with the water taking device, and the primary side output end of the heat exchange module is connected with the drainage device; the secondary side output end of the heat exchange module is connected with the first water outlet end of the equipment module, the first water outlet end of the equipment module is connected with the water inlet end of the air conditioner, the first water inlet end of the equipment module is connected with the water outlet end of the air conditioner, and the first water inlet end of the equipment module is connected with the second water outlet end of the equipment module. The second water outlet end of the equipment module is connected with the water inlet end of the server unit, the second water inlet end of the equipment module is connected with the water outlet end of the server unit, and the second water inlet end of the equipment module is connected with the secondary side input end of the heat exchange module; and the heat exchange module is used for cooling the cooling liquid of the air conditioner and / or the server unit by using the underground water pumped by the water taking device. The system is used for reducing refrigeration water consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to liquid cooling technology, in particular to a liquid cooling system. BACKGROUND

[0002] Data centers belong to high energy consumption industries, and the heat dissipation of high-load servers in data centers is an important part of energy consumption in data centers. The liquid cooling system is one of the commonly used data center cooling schemes. In order to promote energy saving and emission reduction, the liquid cooling system often uses natural cold sources such as underground water. The temperature of underground water is basically constant throughout the year and is basically not affected by the outside air temperature, which is a renewable natural cold resource that can be utilized.

[0003] In the prior art, the cold source of the liquid cooling server is basically mainly the cooling tower scheme. The cooling tower uses the principle of water evaporation latent heat to take away heat, which has the problem of large water consumption. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a liquid cooling system to reduce the consumption of refrigerated water.

[0005] In one aspect, the present application provides a liquid cooling system, comprising: a heat exchange module and a device module; the device module comprises an air conditioner and a server unit; wherein,

[0006] The primary side input end of the heat exchange module is connected with the water taking device, and the primary side output end of the heat exchange module is connected with the water drainage device; the secondary side output end of the heat exchange module is connected with the first water outlet end of the device module, the first water inlet end of the device module is connected with the water outlet end of the air conditioner, the first water inlet end of the device module is connected with the second water outlet end of the device module, the second water inlet end of the device module is connected with the water inlet end of the server unit, and the second water outlet end of the device module is connected with the water outlet end of the server unit.

[0007] The heat exchange module is used to dissipate heat for the cooling liquid of the air conditioner and / or the server unit using the underground water extracted by the water taking device.

[0008] In one possible implementation, the device module further comprises a first three-way diverter valve.

[0009] The first water inlet end of the device module is connected with the inlet of the first three-way diverter valve, the second water outlet end of the device module is connected with the first outlet of the first three-way diverter valve, and the secondary side input end of the heat exchange module is connected with the second outlet of the first three-way diverter valve.

[0010] The first three-way shunt valve is configured to connect the inlet with the first outlet or the inlet with the second outlet.

[0011] In a possible implementation, the device module further includes a first water pump.

[0012] The input end of the first water pump is connected with the first outlet of the first three-way shunt valve, and the output end of the first water pump is connected with the second water outlet end of the device module.

[0013] The first water pump is configured to adjust the rotating speed according to the pressure difference between the second water outlet end and the second water inlet end of the device module.

[0014] In a possible implementation, the device module further includes a three-way confluence valve.

[0015] The first inlet of the three-way confluence valve is connected with the first water inlet end of the device module, the second inlet of the three-way confluence valve is connected with the second water inlet end of the device module, and the outlet of the three-way confluence valve is connected with the secondary side input end of the heat exchange module.

[0016] The three-way confluence valve is configured to control the flow of the cooling liquid flowing into the server unit according to the first temperature of the cooling liquid flowing into the second water inlet end of the device module.

[0017] In a possible implementation, the heat exchange module includes a first heat exchanger and a second heat exchanger, and the device module further includes a check valve.

[0018] The primary side input end of the first heat exchanger is connected with the water taking device, the primary side output end of the first heat exchanger is connected with the water draining device, the secondary side output end of the first heat exchanger is connected with the first water outlet end of the device module, the first water inlet end of the device module is connected with the inlet of the check valve, the outlet of the check valve is connected with the secondary side input end of the first heat exchanger, the second water inlet end of the device module is connected with the secondary side input end of the second heat exchanger, and the secondary side output end of the second heat exchanger is connected with the outlet of the check valve; the primary side input end of the second heat exchanger is connected with the water taking device, and the primary side output end of the second heat exchanger is connected with the water draining device.

[0019] The check valve is configured to ensure that the cooling liquid flowing out of the secondary side output end of the second heat exchanger flows into the secondary side output end of the first heat exchanger.

[0020] In a possible implementation, the device module further includes a bypass valve.

[0021] The inlet of the bypass valve is connected with the input end of the secondary side of the second heat exchanger, and the outlet of the bypass valve is connected with the output end of the secondary side of the second heat exchanger.

[0022] The bypass valve is configured to control the flow of the cooling liquid flowing into the second heat exchanger according to the second temperature of the cooling liquid at the input end of the secondary side of the first heat exchanger.

[0023] In a possible implementation, the heat exchange module further includes a second water pump and a first stop valve.

[0024] The input end of the first stop valve is connected with the water taking device, the output end of the first stop valve is connected with the input end of the second water pump, and the output end of the second water pump is connected with the input end of the primary side of the second heat exchanger.

[0025] The second water pump is configured to be started or stopped according to the opening degree of the bypass valve.

[0026] The first stop valve is configured to be opened when the second water pump is started and closed when the second water pump is stopped.

[0027] In a possible implementation, the heat exchange module further includes a third water pump, and the device module further includes a fourth water pump.

[0028] The input end of the third water pump is connected with the water taking device, and the output end of the third water pump is connected with the input end of the primary side of the first heat exchanger.

[0029] The input end of the fourth water pump is connected with the output end of the secondary side of the first heat exchanger, and the output end of the fourth water pump is connected with the first water outlet end of the device module.

[0030] The third water pump and the fourth water pump are configured to adjust the rotating speed according to the third temperature of the cooling liquid output by the output end of the secondary side of the first heat exchanger.

[0031] In a possible implementation, the system further includes a water chiller.

[0032] The water chiller is connected with the water taking device and the input end of the primary side of the heat exchange module, and is configured to cool the underground water flowing into the input end of the primary side of the heat exchange module.

[0033] In a possible implementation, the water chiller includes an evaporator, a condenser, a compressor and a throttling valve.

[0034] The secondary side input end of the evaporator is connected with the water taking device, and the secondary side output end of the evaporator is connected with the primary side input end of the heat exchange module; the evaporator is used for cooling the underground water flowing into the primary side input end of the heat exchange module by evaporating and absorbing heat of the refrigerant liquid.

[0035] The input end of the compressor is connected with the primary side output end of the evaporator, and the compressor is used for compressing the refrigerant vapor discharged from the primary side output end of the evaporator.

[0036] The primary side input end of the condenser is connected with the water taking device, the primary side output end of the condenser is connected with the water draining device, the secondary side input end of the condenser is connected with the output end of the compressor, the secondary side output end of the condenser is connected with the input end of the throttling valve, and the output end of the throttling valve is connected with the primary side input end of the evaporator; the condenser is used for cooling the compressed refrigerant vapor by using the underground water to obtain the refrigerant liquid.

[0037] In a possible implementation manner, the water chiller further includes a second stop valve and a fifth water pump.

[0038] The inlet of the second stop valve is connected with the water taking device, the outlet of the second stop valve is connected with the input end of the fifth water pump, and the output end of the fifth water pump is connected with the primary side input end of the condenser.

[0039] The second stop valve is configured to be opened when the temperature of the underground water extracted by the water taking device is higher than a first threshold value; and the fifth water pump is configured to be started when the temperature of the underground water extracted by the water taking device is higher than the first threshold value.

[0040] In a possible implementation manner, the system further includes a heat tracing pipe.

[0041] The inlet of the heat tracing pipe is connected with the primary side output end of the heat exchange module, and the outlet of the heat tracing pipe is connected with the water draining device.

[0042] The heat tracing pipe is used for heat tracing the to-be-heat-insulated equipment by using the underground water flowing out of the heat exchange module.

[0043] In a possible implementation manner, the heat exchange module further includes a second three-way diverter valve.

[0044] The primary side output end of the heat exchange module is connected with the inlet of the second three-way diverter valve, the first outlet of the second three-way diverter valve is connected with the inlet of the heat tracing pipe, and the second outlet of the second three-way diverter valve is connected with the water draining device.

[0045] The second three-way diverter valve is configured to control the water flow from the primary side output end of the heat exchange module into the heat tracing pipe according to the ambient temperature.

[0046] In a possible implementation, the system further includes a water storage module, and the water storage module includes a desander and a water storage tank.

[0047] The input end of the desander is connected with the water taking device, and the desander is configured to filter the underground water drawn by the water taking device.

[0048] The input end of the water storage tank is connected with the output end of the desander, and the output end of the water storage tank is connected with the primary side input end of the heat exchange module.

[0049] In a possible implementation, the water storage module further includes a sixth water pump.

[0050] The input end of the sixth water pump is connected with the water taking device, and the output end of the sixth water pump is connected with the input end of the desander.

[0051] The sixth water pump is configured to stop when the liquid level in the water storage tank is higher than a second threshold value, and start when the liquid level is lower than a third threshold value.

[0052] In the liquid cooling system provided in the application, natural water is used as a cold source, and the heat exchange module is used to dissipate heat of the cooling liquid of the air conditioner and / or the server unit, so that energy can be effectively saved, and green refrigeration without water consumption is realized. In addition, the cooling liquid discharged by the air conditioner can flow into the server unit, that is, the cooling liquid is cooled by the air conditioner and the server unit in sequence, and then is cooled by the heat dissipation module, so that the utilization rate of the cooling liquid can be effectively improved, the cold capacity of the cold source can be fully utilized, and the heat dissipation performance of the system can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0054] Figure 1 FIG. 1 exemplarily shows a structure schematic diagram of a liquid cooling system provided by an embodiment of the application;

[0055] Figure 2 FIG. 2 exemplarily shows a scene schematic diagram of a first mode provided by an embodiment of the application;

[0056] Figure 3 FIG. 3 exemplarily shows a scene schematic diagram of a second mode provided by an embodiment of the application;

[0057] Figure 4 FIG. 4 exemplarily shows a scene schematic diagram of a third mode provided by an embodiment of the application;

[0058] Figure 5 Fig. 4 shows a schematic diagram of a scenario of the fourth mode provided by the embodiments of the present application.

[0059] The specific embodiments of the present application have been shown by the above drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0060] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The same or similar components are denoted by the same reference numerals throughout the drawings and the following description, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0061] The module in the present application refers to a functional module or a logical module. It can be in the form of software, and its function is realized by executing program code by a processor; or it can be in the form of hardware. The conjunction "and / or" describes the association between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0062] Data centers belong to high energy consumption industries, and the heat dissipation of high-load servers in data centers is an important part of energy consumption in data centers. The liquid cooling system is one of the commonly used data center cooling schemes, and in order to promote energy saving and emission reduction, the liquid cooling system often uses natural cold sources such as underground water. The temperature of underground water is basically constant throughout the year and is basically not affected by the outside air temperature, which is a renewable natural cold resource that can be utilized.

[0063] In the prior art, the cold source of the liquid cooling server is basically mainly the cooling tower scheme, and the cooling tower uses the principle of water evaporation latent heat to take away heat, which has the problem of large water consumption.

[0064] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0065] Figure 1 The structure diagram of the liquid cooling system provided by the embodiments of the present application is shown. As shown in Figure 1 the liquid cooling system can include: a heat exchange module 11 and a device module 12; wherein,

[0066] The primary side input end of the heat exchange module 11 is connected with the water taking device, and the primary side output end of the heat exchange module 11 is connected with the water draining device; the secondary side output end of the heat exchange module 11 is connected with the first water outlet end of the equipment module 12, the first water outlet end of the equipment module 12 is connected with the water inlet end of the air conditioner, the first water inlet end of the equipment module 12 is connected with the water outlet end of the air conditioner, the first water inlet end of the equipment module 12 is connected with the second water outlet end of the equipment module 12, the second water outlet end of the equipment module 12 is connected with the water inlet end of the server unit, the second water inlet end of the equipment module 12 is connected with the water outlet end of the server unit, and the second water inlet end of the equipment module 12 is connected with the secondary side input end of the heat exchange module 11;

[0067] The heat exchange module 11 is used for dissipating heat of the cooling liquid of the air conditioner and / or the server unit by using the water extracted by the water taking device.

[0068] In a specific implementation, the air conditioner and the server unit dissipate heat by using the cooling liquid, and the air conditioner can adjust the temperature of a specified place according to user demand. The heat dissipation module 11 is used for dissipating heat of the cooling liquid used by the air conditioner and / or the server unit, and in order to achieve energy saving and emission reduction, a natural water source can be used as a cold source to dissipate heat of the cooling liquid. The secondary side of the equipment module 12 and the heat dissipation module 11, the air conditioner, and the server unit are connected, which is used for inputting the cooling liquid used by the air conditioner and / or the server unit into the heat dissipation module 11, and inputting the cooling liquid cooled by the heat dissipation module 11 into the air conditioner and / or the server unit.

[0069] Specifically, the heat dissipation module 11 takes water through the water taking device, the extracted cold water flows into the primary side input end of the heat dissipation module 11 and flows out from the primary side output end of the heat dissipation module 11, the cooling liquid used by the air conditioner and / or the server unit flows into the secondary side input end of the heat dissipation module 11 and flows out from the secondary side output end of the heat dissipation module 11, and the cold water and the cooling liquid exchange heat in the heat dissipation module 11, so as to reduce the temperature of the cooling liquid, and the water flowing out from the primary side output end of the heat dissipation module 11 is drained and injected back by the water draining device. The heat dissipation principle used by the system is not based on the water evaporation principle, and no water resources are consumed, so that natural cooling without water consumption can be achieved.

[0070] And according to statistics, the working temperature of liquid cooling server is about 40-50 degrees Celsius, the temperature of cooling medium can be as high as 35-40 degrees Celsius, and for air conditioner, the return water temperature is about 28-33 degrees, which is lower than the working temperature of liquid cooling server, so the first water inlet end of the equipment module 12 and the second water outlet end of the equipment module 12 are connected, the cooled cooling liquid flowing out of the secondary side output end of the heat dissipation module 11 flows into the air conditioner through the first water inlet end of the equipment module 12, the used cooling liquid of the air conditioner flows into the equipment module 12 through the first water inlet end of the equipment module 12, and then flows into the server unit through the second water outlet end of the equipment module 12, and the used cooling liquid of the server unit flows into the equipment module 12 through the second water inlet end of the equipment module 12 and enters the secondary side input end of the heat dissipation module 11, so that the cooling liquid flowing out of the air conditioner can be used for heat dissipation of the server unit, and the cooling capacity of the cooling liquid and the cold source cold quantity can be fully utilized.

[0071] In the server unit, the liquid cooling distribution unit can be connected with the plurality of server cold plates, and the liquid cooling distribution unit is configured to distribute the cooling liquid flowing into the server cold plates, or the liquid cooling distribution unit can include a heat dissipation device configured to dissipate heat of the coolant used by the cold plate using the cooling liquid. The server cold plate can dissipate heat of the server.

[0072] For example, when water is used as the cold source, the water taking device can be a water well, and the water discharging device can be a water injection well. The water well is configured to extract water from the ground, and the water injection well is configured to inject the used water back into the ground. In actual application, surface water of rivers, seas and lakes can also be used as the cold source, which can be selected according to the production needs, and is not limited herein.

[0073] In the embodiment of the present application, the natural water source is used as the cold source, and the heat dissipation module is used to dissipate heat of the cooling liquid of the air conditioner and / or the server unit, which can effectively save energy and realize water-free green refrigeration. In addition, the cooling liquid discharged by the air conditioner can flow into the server unit, that is, the cooling liquid is used to dissipate heat of the air conditioner and the server unit in sequence, and then is cooled and dissipated by the heat dissipation module, which can effectively improve the utilization rate of the cooling liquid and fully utilize the cold source cold quantity.

[0074] In a possible implementation, the equipment module 12 further includes a first three-way diverter valve 121.

[0075] The inlet of the first three-way diverter valve 121 is connected with the first water inlet end of the equipment module 12, the first outlet of the first three-way diverter valve 121 is connected with the second water outlet end of the equipment module 12, and the second outlet of the first three-way diverter valve 121 is connected with the secondary side input end of the heat dissipation module 11.

[0076] The first three-way shunt valve 121 is configured to connect the inlet to the first outlet or the inlet to the second outlet.

[0077] In a specific implementation, the first three-way shunt valve 121 can connect the inlet to the first outlet, so that the cooling liquid discharged from the air conditioner flows into the server unit; or the first three-way shunt valve 121 can connect the inlet to the second outlet, so that the cooling liquid discharged from the air conditioner directly flows into the heat exchange module 11. Therefore, the first three-way shunt valve 121 can control whether the cooling liquid discharged from the air conditioner output end flows into the server unit, so that whether to start the heat dissipation of the server unit can be flexibly selected according to actual needs. For example, when the server unit is maintained to be stopped, the first three-way shunt valve 121 can connect the inlet to the second outlet, so that the cooling liquid discharged from the air conditioner output end does not flow into the server unit.

[0078] In the embodiment of the present application, by arranging the first three-way shunt valve, the cooling liquid discharged from the air conditioner output end can be flexibly controlled to flow into the server unit or directly flow into the heat exchange module, so that the flexibility of the system can be improved, and various application scenarios can be adapted.

[0079] In a possible implementation, the device module 12 further includes a first water pump 122.

[0080] The input end of the first water pump 122 is connected to the first outlet of the first three-way shunt valve 121, and the output end of the first water pump 122 is connected to the second water outlet of the device module 12.

[0081] The first water pump 122 is configured to adjust the rotating speed according to the pressure difference ΔP between the second water outlet and the second water inlet of the device module 12.

[0082] In a specific implementation, the first water pump 122 is arranged between the first three-way shunt valve 121 and the second water outlet (the server unit) of the device module 12. The first water pump 122 can be a variable frequency booster pump, which is configured to adjust the rotating speed according to the cooling liquid pressure difference ΔP between the second water outlet and the second water inlet of the device module 12. For example, when the cooling liquid pressure difference ΔP is less than a set pressure difference, the rotating speed is increased, so that the cooling liquid pressure in the liquid cooling distribution unit is sufficient, so that the server unit is sufficiently cooled, and the reliability of the system is improved. In actual application, the first water pump 122 can also use other control algorithms, which are not limited herein.

[0083] In a possible implementation, the device module 12 further includes a three-way confluence valve 123.

[0084] The first inlet of the three-way confluence valve 123 is connected to the first water inlet of the device module 12, the second inlet of the three-way confluence valve 123 is connected to the second water inlet of the device module 12, and the outlet of the three-way confluence valve 123 is connected to the secondary side input end of the heat exchange module 11.

[0085] The three-way confluence valve 123 is configured to control the flow of the cooling liquid flowing into the server unit according to the first temperature T1 of the cooling liquid flowing into the second water inlet of the device module 12.

[0086] In a specific implementation, the three-way confluence valve 123 can control the opening degrees of the first inlet and the second inlet, so as to adjust the proportion of the cooling liquid flowing out of the air conditioner and passing through the server unit and the proportion of the cooling liquid flowing out of the air conditioner and not passing through the server unit, and realize the control of the flow of the cooling liquid flowing into the server unit. According to the first temperature T1 of the cooling liquid flowing into the second water inlet of the device module 12, the three-way confluence valve 123 can control the flow of the cooling liquid flowing into the server unit, so as to ensure that there is sufficient cooling liquid for the server unit to be fully cooled, and at the same time, avoid the waste caused by too much cooling liquid flowing into the server unit. For example, when the first temperature T1 is too high, the flow of the cooling liquid flowing into the server unit is increased; when the first temperature T1 is too low, the flow of the cooling liquid flowing into the server unit is reduced. In actual application, the three-way confluence valve 123 can also use other control algorithms, which are not limited herein.

[0087] In a possible implementation, the heat exchange module 11 includes: a first heat exchanger 111 and a second heat exchanger 112; and the device module 12 further includes: a check valve 124.

[0088] The first heat exchanger 111 is connected with the water taking device at the primary side input end, and is connected with the water draining device at the primary side output end. The second heat exchanger 112 is connected with the water taking device at the primary side input end, and is connected with the water draining device at the primary side output end. The second heat exchanger 112 is connected with the device module 12 at the secondary side output end, and the device module 12 is connected with the check valve 124 at the first water inlet. The check valve 124 is connected with the first heat exchanger 111 at the outlet, and the device module 12 is connected with the second heat exchanger 112 at the second water inlet. The second heat exchanger 112 is connected with the check valve 124 at the secondary side output end.

[0089] The check valve 124 is configured to ensure that the cooling liquid flowing out of the secondary side output end of the second heat exchanger 112 flows into the secondary side input end of the first heat exchanger 111.

[0090] In a specific implementation, the heat exchange module 11 can be provided with two heat exchangers, which are a first heat exchanger 111 and a second heat exchanger 112. When the inlet and the second outlet of the first three-way diverter valve 121 are connected, the cooling liquid flows into the first water inlet of the equipment module 12 from the air conditioner and then enters the first heat exchanger 111. When the inlet and the first outlet of the first three-way diverter valve 121 are connected, the cooling liquid flows into the first water inlet of the equipment module 12 from the air conditioner and then enters the server unit from the second water outlet of the equipment module 12, and then flows out of the server unit to the second heat exchanger 112. After the second heat exchanger 112 preliminarily cools the cooling liquid, the cooling liquid enters the first heat exchanger 111 for secondary cooling. Through the cooperation of the two heat exchangers, the cooling liquid can be fully cooled even when the temperature of the cooling liquid is relatively high, thereby avoiding the insufficient cooling of the cooling liquid from affecting the heat dissipation of the air conditioner and / or the server unit, and effectively improving the heat dissipation capacity of the system.

[0091] In order to avoid the cooling liquid at the secondary side input end of the first heat exchanger 111 from flowing back to the air conditioner or the server unit through the first three-way diverter valve 121, a check valve 124 can be provided to ensure that the cooling liquid enters the first heat exchanger 111.

[0092] In a possible implementation, the equipment module 12 further includes a bypass valve 125.

[0093] The inlet of the bypass valve 125 is connected to the secondary side input end of the second heat exchanger 112, and the outlet of the bypass valve 125 is connected to the secondary side output end of the second heat exchanger 112.

[0094] The bypass valve 125 is configured to control the flow of the cooling liquid flowing into the second heat exchanger 112 according to the second temperature T2 of the cooling liquid at the secondary side input end of the first heat exchanger 111.

[0095] In a specific implementation, the bypass valve 125 can be provided between the secondary side input end and the secondary side output end of the second heat exchanger 112. By controlling the opening degree of the bypass valve 125, the proportion of the cooling liquid flowing out of the server unit and flowing into the first heat exchanger 111 and the second heat exchanger 112 can be adjusted, so as to adjust the flow of the cooling liquid entering the second heat exchanger 112. The bypass valve 125 can adjust the opening degree according to the second temperature T2 of the cooling liquid at the secondary side input end of the first heat exchanger 111, for example, when the second temperature T2 is too high, the flow of the cooling liquid entering the second heat exchanger 112 is increased, so as to increase the heat exchange capacity of the heat exchange module 11 and achieve sufficient heat dissipation of the cooling liquid. In actual applications, the bypass valve 125 can also use other control algorithms, which are not limited herein.

[0096] In a possible implementation, the heat exchange module 11 further includes a second water pump 113 and a first stop valve 114.

[0097] The input end of the first stop valve 114 is connected with the water taking device, the output end of the first stop valve 114 is connected with the input end of the second water pump 113, and the output end of the second water pump 113 is connected with the input end of the primary side of the second heat exchanger 112.

[0098] The second water pump 113 is configured to be started or stopped according to the opening degree of the bypass valve 125.

[0099] The first stop valve 114 is configured to be opened when the second water pump 113 is started and closed when the second water pump 113 is stopped.

[0100] In a specific implementation, the second water pump 113 is used to pump water into the input end of the primary side of the second heat exchanger 112, and can be started or stopped according to the opening degree of the bypass valve 125, so that when there is no cooling liquid flowing into the secondary side of the second heat exchanger 112, the second water pump 113 is stopped, and when there is cooling liquid flowing into the secondary side of the second heat exchanger 112, the second water pump 113 is started, to realize intelligent automatic control. The stop valve 114 is used to guide or cut off the inlet pipeline of the input end of the primary side of the second heat exchanger 112, and can be opened or closed according to whether the second water pump 113 is started. In actual application, the stop valve 114 can be set to be closed in advance or delayed, so as to ensure that when there is no cooling liquid flowing into the secondary side of the second heat exchanger 112, there is also no water flowing into the primary side, to avoid wasting resources, and when there is cooling liquid flowing into the secondary side of the second heat exchanger 112, there is also water flowing into the primary side, to realize reliable heat exchange.

[0101] In a possible implementation, the heat exchange module 11 further includes a third water pump 115, and the device module further includes a fourth water pump 126.

[0102] The input end of the third water pump 115 is connected with the water taking device, and the output end of the third water pump 115 is connected with the input end of the primary side of the first heat exchanger 111.

[0103] The input end of the fourth water pump 126 is connected with the output end of the secondary side of the first heat exchanger 111, and the output end of the fourth water pump 126 is connected with the first water outlet of the device module 12.

[0104] The third water pump 115 and the fourth water pump 126 are configured to adjust the rotating speed according to the third temperature T3 of the cooling liquid output from the output end of the secondary side of the first heat exchanger 111.

[0105] In a specific implementation, a third water pump 115 is arranged at the primary side input end of the first heat exchanger 111, and the third water pump 115 is configured to pump water into the primary side of the first heat exchanger 111. A fourth water pump 126 is arranged at the first water outlet of the equipment module 12, and the fourth water pump 126 is configured to pump the cooling liquid into the air conditioner. According to the third temperature T3 of the cooling liquid output from the secondary side output end of the first heat exchanger 111, the third water pump 115 adjusts the rotation speed. For example, when the third temperature T3 is relatively high, the rotation speed of the third water pump 115 is increased, so as to increase the water flow rate of the primary side of the first heat exchanger 111, improve the heat exchange capacity of the first heat exchanger 111, and thus reduce the third temperature T3, so that the temperature of the cooling liquid flowing into the air conditioner is low enough, thereby achieving sufficient heat dissipation. Similarly, according to the third temperature T3 of the cooling liquid output from the secondary side output end of the first heat exchanger 111, the fourth water pump 126 can also adjust the rotation speed. For example, when the third temperature T3 is relatively low, the fourth water pump 126 reduces the rotation speed, so as to reduce the flow rate of the cooling liquid entering the air conditioner, and improve the utilization rate of the cooling liquid. Through the rotation speed adjustment of the third water pump 115 and the fourth water pump 126, the utilization rate of the cooling liquid can be improved while achieving sufficient heat dissipation of the equipment, thereby effectively improving the heat dissipation performance of the system. In actual application, the third water pump 115 and the fourth water pump 126 can also use other control algorithms, which are not limited herein.

[0106] In a possible implementation, the system further includes a water chiller 13.

[0107] The water chiller 13 is connected with the water taking device and the primary side input end of the heat exchange module 11, and is configured to cool the water flowing into the primary side input end of the heat exchange module 11.

[0108] In a specific implementation, when the temperature of the cold water extracted by the water taking device is not low enough, the heat exchange requirement of the cooling liquid cannot be met. Therefore, the water chiller 13 can be arranged between the water taking device and the primary side of the heat exchange module 11, so as to cool the water flowing into the primary side input end of the heat exchange module 11, thereby reducing the temperature of the cold water flowing into the primary side of the heat exchange module 11, and improving the heat exchange capacity of the heat exchange module 11.

[0109] In a possible implementation, the water chiller 13 includes an evaporator 131, a condenser 132, a compressor 133, and a throttling valve 134.

[0110] The secondary side input end of the evaporator 131 is connected with the water taking device, and the secondary side output end of the evaporator 131 is connected with the primary side input end of the heat exchange module 11. The evaporator 131 is configured to cool the water flowing into the primary side input end of the heat exchange module 11 by evaporating the refrigerant liquid to absorb heat.

[0111] The input end of the compressor 133 is connected with the output end of the primary side of the evaporator 131, for compressing the refrigerant steam discharged from the primary side of the evaporator 131;

[0112] The input end of the primary side of the condenser 132 is connected with the water taking device, the output end of the primary side of the condenser 132 is connected with the water drainage device, the input end of the secondary side of the condenser 132 is connected with the output end of the compressor 133, the output end of the condenser 132 is connected with the input end of the throttling valve 134, and the output end of the throttling valve 134 is connected with the input end of the primary side of the evaporator 131; the condenser 132 is used for cooling the compressed refrigerant steam by using water to obtain refrigerant liquid.

[0113] In a specific implementation, the evaporator 131 is used for radiating the heat of the water drawn by the water taking device by using the refrigerant. Specifically, the water flows into the input end of the secondary side of the evaporator 131 and flows out from the output end of the secondary side of the evaporator 131 to the heat exchange module 11; the refrigerant liquid flows into the input end of the primary side of the evaporator 131, absorbs the heat of the water in the evaporator 131 to evaporate into steam, and flows out from the output end of the primary side of the evaporator 131 to the compressor 133. The compressor 133 is used for compressing the refrigerant steam to increase the pressure and temperature of the refrigerant steam, and sending the compressed refrigerant steam to the condenser 132. The condenser is used for radiating the heat of the refrigerant steam by using the water drawn by the water taking device. Specifically, the refrigerant steam enters the input end of the secondary side of the condenser 132, the water drawn by the water taking device enters the input end of the primary side of the condenser 132, the cold water and the refrigerant steam exchange heat, so that the temperature of the refrigerant steam decreases and the refrigerant steam condenses into refrigerant liquid, the refrigerant liquid flows out from the output end of the secondary side of the condenser 132 and enters the input end of the primary side of the evaporator 131 through the throttling valve 134; the heat exchanged water flows out from the output end of the primary side of the condenser 132 and is injected back by the water drainage device. The throttling valve 134 is used for reducing the pressure of the refrigerant and limiting the flow of the refrigerant, so that the refrigerant flows from a high-pressure area to a low-pressure area, and expands in the throttling process to reduce the temperature. By using natural water source, the water flowing into the heat exchange module 11 is mechanically cooled by the refrigerant, realizing green refrigeration, and the secondary side of the evaporator 131 and the primary side of the condenser 132 both use natural water source, the cooling temperature difference is small, the condensing temperature is low, and the energy efficiency of the cooling unit is high.

[0114] In a possible implementation, the water chiller 13 further includes a second stop valve 135 and a fifth water pump 136;

[0115] The input end of the second stop valve 135 is connected with the water taking device, the output end of the second stop valve 135 is connected with the input end of the fifth water pump 136, and the output end of the fifth water pump 136 is connected with the input end of the primary side of the condenser 132;

[0116] The second stop valve 135 is configured to be opened when the temperature of the water drawn by the water taking device is higher than the first threshold value; and the fifth water pump 136 is configured to be started when the temperature of the water drawn by the water taking device is higher than the first threshold value.

[0117] In a specific implementation, the second stop valve 135 is used to open or shut off the inlet pipeline of the primary side of the condenser 132, and the fifth water pump 136 is used to pump water into the input end of the primary side of the condenser 132, wherein the rotating speed of the fifth water pump 136 is controlled by the condensing pressure of the condenser 132. In actual application, whether to start the cold water unit can be selected according to the temperature of the cold water drawn by the water taking device. When the temperature of the cold water is higher than the first threshold value, the second stop valve 135 is opened, the fifth water pump 136 is started, and the cold water unit is started; when the temperature of the cold water is not higher than the first threshold value, the second stop valve 135 is shut off, the fifth water pump 136 is stopped, and the cold water unit is not started. The cold water drawn by the water taking device directly flows out from the secondary side of the evaporator 131 to the heat exchange module 11 without passing through the refrigerant cooling, so that the heat dissipation capacity of the system is improved, and energy waste is reduced.

[0118] For example, the temperature T4 of the water at the output end of the secondary side of the evaporator can be detected as the temperature of the water drawn by the water taking device.

[0119] In a possible implementation, the system further includes a water storage module 14; the water storage module 14 includes a sand remover 141 and a water storage tank 142.

[0120] The input end of the sand remover 141 is connected with the water taking device, and is used to filter the water drawn by the water taking device.

[0121] The input end of the water storage tank 142 is connected with the output end of the sand remover 141, and the output end of the water storage tank 142 is connected with the input end of the primary side of the heat exchange module 11.

[0122] In a specific implementation, the water storage module 14 can be arranged between the heat exchange module 11 and the water taking device. By storing water through the water storage module 14, the water supply of the heat exchange module 11 can be ensured to be stable, so that the reliability of the system is improved. The sand remover 141 filters the water drawn by the water taking device to remove impurities. The water storage tank 142 stores the filtered water.

[0123] For example, the sand remover 141 and the bottom of the water storage tank 142 are each provided with a blowdown valve, and the blowdown valve is configured to be started periodically.

[0124] In a possible implementation, the water storage module 14 further includes a sixth water pump 143.

[0125] The input end of the sixth water pump 143 is connected with the water taking device, and the output end of the sixth water pump 143 is connected with the input end of the sand remover 141.

[0126] The sixth water pump 143 is configured to stop when the liquid level in the water storage tank 142 is higher than a second threshold value, and start when the liquid level is lower than a third threshold value.

[0127] In a specific implementation, the sixth water pump 143 is used to pump the water extracted by the water extraction device into the desander 141. A liquid level sensor is arranged in the water storage tank 142 to detect the liquid level in the water storage tank 142. In order to maintain the stability of the liquid level in the water storage tank 142, the sixth water pump 143 is controlled to start and stop according to the liquid level in the water storage tank 142. For example, the sixth water pump 143 stops when the liquid level is higher than the second threshold value, and starts when the liquid level is lower than the third threshold value, thereby ensuring the stability and sufficiency of the water storage and improving the reliability of the system.

[0128] Similarly, a water storage tank 15 and a seventh water pump 16 can also be arranged on the water drainage device side. The input end of the water storage tank 15 is connected with the output end of the primary side of the condenser 133 and the output end of the primary side of the heat exchange module 11, and is used to store the water to be drained. The input end of the seventh water pump 16 is connected with the output end of the water storage tank 15, and is used to pump the water in the water storage tank 15 into the water drainage device. A liquid level sensor is arranged in the water storage tank 15 to detect the liquid level in the water storage tank 15. The seventh water pump 16 can be started or stopped according to the liquid level in the water storage tank 15.

[0129] In a possible implementation, the system further includes a heat tracing pipe 17.

[0130] The inlet of the heat tracing pipe 17 is connected with the output end of the primary side of the heat exchange module 11, and the outlet of the heat tracing pipe 17 is connected with the water drainage device.

[0131] The heat tracing pipe 17 is used to heat the equipment to be kept warm using the water flowing out of the heat exchange module 11.

[0132] In a specific implementation, the heat tracing pipe 17 can be arranged between the output end of the primary side of the heat exchange module 11 and the water drainage device. The water flowing out of the output end of the primary side of the heat exchange module 11 has a relatively high temperature, and is used to heat the equipment to be kept warm through the heat tracing pipe 17, instead of being directly drained by the water drainage device. This can further improve the utilization rate of the water and improve the energy efficiency ratio of the system.

[0133] For example, the equipment to be kept warm can be part of the pipeline of the system, and the heat tracing pipe 17 is used to heat the pipeline, thereby achieving the anti-freezing of the pipeline in winter.

[0134] In a possible implementation, the heat exchange module 11 further includes a second three-way diverter valve 116.

[0135] The outlet of the heat exchange module 11 is connected with the inlet of the second three-way diverter valve 116, the first outlet of the second three-way diverter valve 116 is connected with the inlet of the heat tracing pipe, and the second outlet of the second three-way diverter valve 116 is connected with the drainage device.

[0136] The second three-way diverter valve 116 is configured to control the water flow from the outlet of the heat exchange module 11 into the heat tracing pipe 17 according to the ambient temperature T5.

[0137] In a specific implementation, the second three-way diverter valve 116 can control the water flow from the outlet of the heat exchange module 11 into the heat tracing pipe 17 by adjusting the opening degree according to the ambient temperature T5. For example, when the ambient temperature T5 is high, the heat tracing of the equipment to be kept warm is not needed, and therefore the second three-way diverter valve 116 controls the water from the outlet of the heat exchange module 11 not to flow into the heat tracing pipe 17, thereby improving the flexibility of the system.

[0138] Based on the above embodiment, the liquid cooling system can adopt multiple operation modes. Next, the four operation modes of the liquid cooling system provided by the embodiment of the present application are described in combination with Figures 2-5

[0139] Figure 2 The scene schematic diagram of the first mode provided by the embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the liquid cooling system provided by the embodiment of the present application includes a heat exchange module 11, a first three-way diverter valve 112, a second three-way diverter valve 116, a heat tracing pipe 17, a first pump 21, a second pump 22, a first valve 23, a second valve 24, a third valve 25, a fourth valve 26, a first temperature sensor 31, a second temperature sensor 32, a third temperature sensor 33, a fourth temperature sensor 34, a first pressure sensor 41, a second pressure sensor 42, a first controller 51, a second controller 52, a third controller 53, a fourth controller 54, a first temperature controller 61, a second temperature controller 62, a third temperature controller 63, a fourth temperature controller 64, a first pressure controller 71, and a second pressure controller 72. Figure 2 ​As shown, in the first mode, the water cooling unit 13 is enabled, the server unit is disabled, the second heat exchanger 112 is disabled, and the air conditioner is cooled by a combination of natural cooling and mechanical cooling. The sixth water pump 143 is started or stopped according to the liquid level in the water storage tank 142, the high water level pump is stopped, and the low water level pump is started. When the temperature of the water extracted by the water extraction device is higher than the first threshold value, the water cooling unit 13 is started for mechanical cooling, the second stop valve 135 is opened, the fifth water pump 136 is started, the water cooling unit 13 is capacity-regulated by the difference between the outlet water temperature T4 of the second side of the evaporator and the target set point, the rotation speed of the fifth water pump 136 is controlled by the condensing pressure of the condenser 132, and the outlet water flow of the primary side of the condenser 132 flows back to the water storage tank 15. The third water pump 115 pumps the cold water flowing out of the secondary side of the evaporator 131 into the primary side of the first heat exchanger 111, after heat exchange, the second three-way valve 116 determines whether to open the heat tracing according to the ambient temperature T5, and the water finally flows back to the water storage tank 15 to complete all heat exchange of the primary side, and the rotation speed of the third water pump 115 is controlled by the outlet water temperature T3 of the secondary side of the first heat exchanger 111. The fourth water pump 126 pumps the low-temperature circulating cooling liquid of the secondary side of the first heat exchanger 111 into the water supply pipe network of the chilled water terminal air conditioner, and the rotation speed of the fourth water pump 126 is also controlled by the water temperature T3. The first three-way valve 121 of the outlet water pipe network of the chilled water terminal air conditioner is connected to the inlet of the check valve 124 at this time, the cooling liquid flows back to the return water pipe of the first heat exchanger 111 through the check valve 124, and the circulation of the secondary side is completed. The sand remover 41 and the blowdown valve of the water storage tank 142 are periodically started. The seventh water pump 16 is started or stopped according to the liquid level in the water storage tank 15, the high water level pump is started, and the low water level pump is stopped.

[0140] Figure 3 The second mode scenario provided by the embodiment of the application is shown in the figure. As shown in the figure, in the second mode, the water cooling unit 13 is disabled, the server unit is enabled, the second heat exchanger 112 is enabled, and the air conditioner is cooled by the server unit. The sixth water pump 143 is started or stopped according to the liquid level in the water storage tank 142, the high water level pump is stopped, and the low water level pump is started. Figure 3As shown, in the second mode, the water cooling unit 13 is enabled, the server unit is enabled, the second heat exchanger 112 is enabled, and the air conditioner and the server unit are cooled by a combination of natural cooling and mechanical cooling. The sixth water pump 143 is started or stopped according to the liquid level in the water storage tank 142, the high water level pump is stopped, and the low water level pump is started. When the temperature of the water extracted by the water extraction device is higher than the first threshold value, the water cooling unit 13 is started for mechanical cooling, the second stop valve 135 is opened, the fifth water pump 136 is started, the water cooling unit 13 is capacity-regulated according to the difference between the second-side outlet water temperature T4 of the evaporator and the target set point, the rotation speed of the fifth water pump 136 is controlled by the condensing pressure of the condenser 132, and the first-side outlet water flow of the condenser 132 flows back to the water storage tank 15. The third water pump 115 pumps the cold water flowing out of the second side of the evaporator 131 into the first side of the first heat exchanger 111, after heat exchange, the second three-way valve 116 determines whether to open the heat tracing according to the ambient temperature T5, and the water finally flows back to the water storage tank 15 to complete all heat exchange of the first side. The rotation speed of the third water pump 115 is controlled by the second-side outlet water temperature T3 of the first heat exchanger 111. The fourth water pump 126 pumps the low-temperature circulating cooling liquid on the second side of the first heat exchanger 111 into the water supply pipe network of the chilled water terminal air conditioner, and the rotation speed of the fourth water pump 126 is also controlled by the water temperature T3. The first three-way valve 121 of the chilled water terminal air conditioner outlet water pipe network is reversed to the inlet of the first water pump 122 at this time, the cooling liquid is sent into the water pipe network of the server unit after being pressurized by the first water pump 122, the rotation speed of the first water pump 122 is adjusted according to the pressure difference ΔP between the inlet and outlet of the liquid cooling distribution unit, the three-way combining valve 123 adjusts the flow of the cooling liquid entering the server unit, the opening degree of the three-way combining valve 123 is adjusted by the return water temperature T1 of the server unit, and the return water pipe of the first heat exchanger 111 is entered after passing through the bypass valve 125. At this time, due to the action of the check valve 124, it is ensured that the water flow can only enter the heat exchanger 1 for heat exchange, thereby completing the circulation on the second side. When the inlet temperature T2 of the first heat exchanger 111 is higher than the set point, the opening degree of the bypass valve 125 is reduced, so that part of the return water of the liquid cooling system enters the second heat exchanger 112 for cooling and heat exchange before entering the first heat exchanger 111. At this time, the second water pump 113 and the first stop valve 114 are opened, and the opening degree of the bypass valve 125 is adjusted by the T2 temperature. The desander 41 and the blowdown valve of the water storage tank 142 are periodically started. The seventh water pump 16 is started or stopped according to the liquid level in the water storage tank 15, the high water level pump is started, and the low water level pump is stopped.

[0141] Figure 4 The third mode scenario provided by the embodiment of the present application is shown in the figure. As shown in the figure, Figure 4As shown, in the third mode, the water-cooled unit 13 is shut down, the server unit is shut down, and the second heat exchanger 112 is shut down, with air conditioning being cooled naturally. The sixth water pump 143 starts or stops according to the liquid level in the water storage tank 142, stopping when the water level is high and starting when the water level is low. At this time, the temperature of the water drawn by the water intake device is not higher than the first threshold, the water-cooled unit 13 is in the off state, the second shut-off valve 135 is closed, and the fifth water pump 136 stops. The third water pump 115 pumps cold water into the primary side of the first heat exchanger 111. After heat exchange, the second three-way diversion valve 116 determines whether to open the heat tracing based on the ambient temperature T5. The water finally flows back to the water storage tank 15 to complete all the heat exchange on the primary side. The speed of the third water pump 115 is controlled by the secondary side outlet water temperature T3 of the first heat exchanger 111. The fourth water pump 126 draws low-temperature circulating coolant from the secondary side of the first heat exchanger 111 and pumps it into the water supply network of the chilled water terminal air conditioner. The speed of the fourth water pump 126 is also controlled by the water temperature T3. At this time, the first three-way diverter valve 121 of the chilled water terminal air conditioner outlet network is only connected to the inlet of the check valve 124. The coolant flows through the check valve 124 back to the return water pipe of the first heat exchanger 111, completing the secondary side circulation. The drain valves of the sand separator 41 and the water storage tank 142 are started periodically. The seventh water pump 16 starts or stops according to the liquid level in the water storage tank 15, starting when the water level is high and stopping when the water level is low.

[0142] Figure 5 This is a schematic diagram of a scenario for the fourth mode provided in an embodiment of this application. For example... Figure 5As shown, in the fourth mode, the water cooling unit 13 is disabled, the server unit is enabled, the second heat exchanger 112 is enabled, and the air conditioner and the server unit are cooled by natural cooling. The sixth water pump 143 is started or stopped according to the liquid level in the water storage tank 142, the high water level pump is stopped, and the low water level pump is started. At this time, the temperature of the water extracted by the water extraction device is not higher than the first threshold value, the water cooling unit 13 is in a shutdown state, the second stop valve 135 is closed, and the fifth water pump 136 is stopped. The third water pump 115 pumps cold water into the primary side of the first heat exchanger 111, after heat exchange, the second three-way valve 116 determines whether to open the heat tracing according to the ambient temperature T5, and the water finally flows back to the water storage tank 15 to complete all heat exchange of the primary side. The rotation speed of the third water pump 115 is controlled by the water temperature T3 of the secondary side of the first heat exchanger 111. The fourth water pump 126 pumps the low-temperature circulating coolant of the secondary side of the first heat exchanger 111 into the water supply pipe network of the chilled water terminal air conditioner, and the rotation speed of the fourth water pump 126 is also controlled by the water temperature T3. The first three-way valve 121 of the chilled water terminal air conditioner outlet water pipe network is reversed to the inlet of the first water pump 122 at this time, the coolant is sent into the water pipe network of the server unit after being pressurized by the first water pump 122, the rotation speed of the first water pump 122 is adjusted according to the pressure difference ΔP of the inlet and outlet of the liquid cooling distribution unit, the three-way valve 123 adjusts the flow of the coolant entering the server unit, the opening of the three-way valve 123 is adjusted by the server unit return water temperature T1, and after passing through the bypass valve 125, it is combined into the return water pipe of the first heat exchanger 111. At this time, due to the action of the check valve 124, it is ensured that the water flow can only enter the heat exchanger 1 for heat exchange, thereby completing the circulation of the secondary side. When the inlet temperature T2 of the first heat exchanger 111 is higher than the set point, the opening of the bypass valve 125 is reduced, so that part of the return water of the liquid cooling system enters the second heat exchanger 112 for cooling and heat exchange before entering the first heat exchanger 111. At this time, the second water pump 113 and the first stop valve 114 are opened, and the opening of the bypass valve 125 is adjusted by the temperature T2. The desander 41 and the blowdown valve of the water storage tank 142 are started periodically. The seventh water pump 16 is started or stopped according to the liquid level in the water storage tank 15, the high water level pump is started, and the low water level pump is stopped.

[0143] It can be understood that other operation modes can also be used in the actual application of the liquid cooling system, which are not limited herein.

[0144] Those skilled in the art will readily conceive other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or conventional technical means in the art that are not disclosed by the present application. The specification and examples are only considered as exemplary, and the true scope and spirit of the present application are indicated by the following claims.

[0145] It is to be understood that the application is not limited to the precise construction already described above and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the claims appended hereto.

Claims

1. A liquid cooling system, characterized by, The application relates to a heat exchange module and a device module; wherein, a first side input end of the heat exchange module is connected with a water taking device, a first side output end of the heat exchange module is connected with a water draining device, a second side output end of the heat exchange module is connected with a first water outlet end of the device module, the first water outlet end of the device module is connected with a water inlet end of an air conditioner, a first water inlet end of the device module is connected with a water outlet end of the air conditioner, the first water inlet end of the device module is connected with a second water outlet end of the device module, the second water outlet end of the device module is connected with a water inlet end of a server unit, a second water inlet end of the device module is connected with a water outlet end of the server unit, and the second water inlet end of the device module is connected with the second side input end of the heat exchange module; the heat exchange module is used for dissipating heat of cooling liquid of the air conditioner and / or the server unit by using underground water taken by the water taking device. The device module further comprises a first three-way shunt valve.

2. The system of claim 1, wherein, an inlet of the first three-way shunt valve is connected with the first water inlet end of the device module, a first outlet of the first three-way shunt valve is connected with the second water outlet end of the device module, and a second outlet of the first three-way shunt valve is connected with the second side input end of the heat exchange module; the first three-way shunt valve is used for connecting the inlet with the first outlet or the inlet with the second outlet. The device module further comprises a first water pump.

3. The system of claim 2, wherein, an input end of the first water pump is connected with the first outlet of the first three-way shunt valve, and an output end of the first water pump is connected with the second water outlet end of the device module; the first water pump is configured to adjust a rotating speed according to a pressure difference between the second water outlet end and the second water inlet end of the device module. The device module further comprises a three-way confluence valve.

4. The system of claim 1, wherein, a first inlet of the three-way confluence valve is connected with the second water outlet end of the device module, a second inlet of the three-way confluence valve is connected with the second water inlet end of the device module, and an outlet of the three-way confluence valve is connected with the second side input end of the heat exchange module; the three-way confluence valve is configured to control a cooling liquid flow rate flowing into the server unit according to a first temperature of the cooling liquid flowing into the second water inlet end of the device module. The heat exchange module comprises a first heat exchanger and a second heat exchanger, and the device module further comprises a check valve; 5. The system of claim 2, wherein, a first side input end of the first heat exchanger is connected with the water taking device, a first side output end of the first heat exchanger is connected with the water draining device, a second side output end of the first heat exchanger is connected with the first water outlet end of the device module, a first water inlet end of the device module is connected with an inlet of the check valve, an outlet of the check valve is connected with a second side input end of the first heat exchanger, a second water inlet end of the device module is connected with a second side input end of the second heat exchanger, and a second side output end of the second heat exchanger is connected with the outlet of the check valve; a first side input end of the second heat exchanger is connected with the water taking device, and a first side output end of the second heat exchanger is connected with the water draining device. ​ The check valve is configured to ensure that the cooling liquid flowing out of the secondary side output end of the second heat exchanger flows into the secondary side input end of the first heat exchanger.

6. The system of claim 5, wherein, The device module further comprises a bypass valve. The bypass valve is connected to the secondary side input end of the second heat exchanger, and the bypass valve is connected to the secondary side output end of the second heat exchanger. The bypass valve is configured to control the flow of the cooling liquid flowing into the second heat exchanger according to the second temperature of the cooling liquid at the secondary side input end of the first heat exchanger.

7. The system of claim 6, wherein, The heat exchange module further comprises a second water pump and a first stop valve. The input end of the first stop valve is connected to the water taking device, the output end of the first stop valve is connected to the input end of the second water pump, and the output end of the second water pump is connected to the primary side input end of the second heat exchanger. The second water pump is configured to start or stop according to the opening degree of the bypass valve. The first stop valve is configured to open when the second water pump starts and close when the second water pump stops.

8. The system of claim 5, wherein, The heat exchange module further comprises a third water pump, and the device module further comprises a fourth water pump. The input end of the third water pump is connected to the water taking device, and the output end of the third water pump is connected to the primary side input end of the first heat exchanger. The input end of the fourth water pump is connected to the secondary side output end of the first heat exchanger, and the output end of the fourth water pump is connected to the first water outlet of the device module. The third water pump and the fourth water pump are configured to adjust the rotating speed according to the third temperature of the cooling liquid output by the secondary side output end of the first heat exchanger.

9. The system of claim 1, wherein, The system further comprises a water chiller. The water chiller is connected to the water taking device and the primary side input end of the heat exchange module, and is configured to cool the underground water flowing into the primary side input end of the heat exchange module.

10. The system of claim 9, wherein, The water chiller comprises an evaporator, a condenser, a compressor and a throttling valve. The secondary side input end of the evaporator is connected to the water taking device, and the secondary side output end of the evaporator is connected to the primary side input end of the heat exchange module; the evaporator is configured to cool the underground water flowing into the primary side input end of the heat exchange module by evaporating the refrigerant liquid to absorb heat. The input end of the compressor is connected to the primary side output end of the evaporator, and the compressor is configured to compress the refrigerant vapor discharged from the primary side output end of the evaporator. The primary side input end of the condenser is connected to the water taking device, the primary side output end of the condenser is connected to the water draining device, the secondary side input end of the condenser is connected to the output end of the compressor, the secondary side output end of the condenser is connected to the input end of the throttling valve, and the output end of the throttling valve is connected to the primary side input end of the evaporator; the condenser is configured to cool the compressed refrigerant vapor using underground water to obtain refrigerant liquid.

11. The system of claim 10, wherein, The water chiller further comprises a second stop valve and a fifth water pump. An inlet of the second stop valve is connected with the water taking device, an outlet of the second stop valve is connected with an input end of the fifth water pump, and an output end of the fifth water pump is connected with an input end of the primary side of the condenser; The second stop valve is configured to be opened when the temperature of the underground water drawn by the water taking device is higher than a first threshold value, and the fifth water pump is configured to be started when the temperature of the underground water drawn by the water taking device is higher than the first threshold value.

12. The system of claim 1, wherein, The system further comprises a heat tracing pipe; An inlet of the heat tracing pipe is connected with an output end of the primary side of the heat exchange module, and an outlet of the heat tracing pipe is connected with the water draining device; The heat tracing pipe is used for heat tracing the device to be kept warm by using the underground water flowing out of the heat exchange module.

13. The system of claim 12, wherein, The heat exchange module further comprises a second three-way diverter valve; An output end of the primary side of the heat exchange module is connected with an inlet of the second three-way diverter valve, a first outlet of the second three-way diverter valve is connected with an inlet of the heat tracing pipe, and a second outlet of the second three-way diverter valve is connected with the water draining device; The second three-way diverter valve is configured to control the water flow rate flowing from the output end of the primary side of the heat exchange module into the heat tracing pipe according to the ambient temperature.

14. The system of any one of claims 1-13, wherein, The system further comprises a water storage module, and the water storage module comprises a sand remover and a water storage tank; An input end of the sand remover is connected with the water taking device, and the sand remover is used for filtering the underground water drawn by the water taking device; An input end of the water storage tank is connected with an output end of the sand remover, and an output end of the water storage tank is connected with an input end of the primary side of the heat exchange module.

15. The system of claim 14, wherein, The water storage module further comprises a sixth water pump; An input end of the sixth water pump is connected with the water taking device, and an output end of the sixth water pump is connected with the input end of the sand remover; The sixth water pump is configured to be stopped when a liquid level in the water storage tank is higher than a second threshold value, and to be started when the liquid level is lower than a third threshold value.

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