Closed liquid cooling circulation system for data center

Abstract

The utility model provides a closed liquid cooling circulation system for a data center. The closed liquid cooling circulation system comprises a main circulation unit, an internal liquid supplementing circulation unit and a control unit. Wherein the main circulating unit comprises a liquid cooling box body, a main circulating pump and a dry cooler, and a liquid cooling medium is pushed by the main circulating pump to circularly flow between the liquid cooling box body and the dry cooler. When the pipeline of the main circulation unit is lack of the liquid medium, the internal liquid supplementing circulation unit can supplement liquid to the pipeline of the main circulation unit. The modular closed pump set design can be flexibly applied to small and medium-sized data center processor assemblies.

Description

Technical Field

[0001] The utility model relates to the field of server liquid cooling systems, in particular to a closed liquid cooling circulation system for a data center. Background Art

[0002] With the rapid development of information technology, cutting-edge technologies such as cloud computing, 5G communications, edge computing, the Internet of Things, and artificial intelligence are increasingly integrated into our production and life. The widespread application of these technologies has promoted the large-scale growth of data centers, while also bringing about a significant increase in the use of IT equipment and server density.

[0003] About 40% of the energy consumption of data centers is used to cool the data center with refrigeration compressor units. The traditional air cooling method, that is, using refrigeration compressor units in conjunction with air coolers, can no longer meet the stringent requirements of modern data centers for energy efficiency.

[0004] In this context, immersion liquid cooling technology with higher heat transfer efficiency came into being. This technology significantly improves cooling efficiency by directly immersing IT equipment such as processors in cooling liquid and using direct contact heat transfer. It is predicted that immersion liquid cooling technology can reduce cooling electricity consumption by more than 40%, providing strong support for energy conservation and emission reduction in data centers.

[0005] The implementation principle of immersion liquid cooling technology is to completely immerse the processor and other heat-generating components in a dedicated coolant. When the processor is running, the heat generated is directly absorbed by the coolant, and then the absorbed coolant is transported to the dry cooler through the pump system. In the dry cooler, the heat of the coolant is efficiently transferred to the external environment, thereby achieving the circulation and cooling of the coolant. This process ensures that the processor can operate stably and efficiently within the appropriate temperature range.

[0006] The application of modular cooling units is particularly important for small and medium-sized data centers. Such data centers require flexible and efficient cooling solutions to adapt to changing processing needs. Therefore, designing a pump group circulation system that can easily add working fluid is crucial to ensure the smooth implementation of immersion liquid cooling technology and the stable operation of the data center. Utility Model Content

[0007] The present application aims to provide a new type of closed liquid cooling circulation system for data centers, which can effectively meet the needs of modular cooling units in small and medium-sized data centers and further promote energy conservation and emission reduction in the data center industry.

[0008] To achieve the above-mentioned purpose, the present application provides a closed liquid cooling circulation system for a data center, including a main circulation unit, an internal liquid replenishment circulation unit and a control unit, wherein:

[0009] The main loop unit includes:

[0010] A liquid cooling box, the liquid cooling box is arranged adjacent to the data center processor assembly and is used to store a liquid medium for cooling the processor assembly, the liquid cooling box comprising a first opening and a second opening;

[0011] A main circulation pump, the inlet of which is connected to the first opening of the liquid cooling box, and is used to extract the liquid medium in the liquid cooling box and promote its circulation;

[0012] A dry cooler, wherein the inlet of the dry cooler is connected to the outlet of the main circulation pump, and the outlet of the dry cooler is connected to the second opening of the liquid cooling box, and is used to receive the hot liquid medium flowing out of the liquid cooling box, and after cooling, the hot liquid medium flows back to the liquid cooling box under the action of the main circulation pump;

[0013] The internal liquid replenishment circulation unit is arranged on a pipeline connecting the first opening of the liquid cooling box and the main circulation pump, and includes:

[0014] A liquid medium storage box, the liquid medium storage box is used to store liquid medium, and the liquid medium storage box includes a third opening and a fourth opening;

[0015] A liquid replenishment circulation pump, wherein the inlet of the liquid replenishment circulation pump is connected to the third opening of the liquid medium storage tank, and the outlet of the liquid replenishment circulation pump is connected to the pipeline connecting the first opening of the liquid cooling box and the main circulation pump, and is used to extract the liquid medium in the liquid medium storage tank and push it into the pipeline of the main circulation system;

[0016] The main circulation pump, the dry cooler, and the liquid replenishment circulation pump are electrically connected to the control unit respectively.

[0017] As a further improvement of the present application, the first opening of the liquid cooling box is connected to the inlet of the main circulation pump through a first butterfly valve, a first pressure sensor, and a first temperature sensor in sequence, the first butterfly valve is used to control the flow rate of the liquid medium flowing out of the liquid cooling box and entering the main circulation pump, and the first pressure sensor and the first temperature sensor are used to measure the pressure and temperature of the liquid medium at the inlet of the main circulation pump, respectively;

[0018] The second opening of the liquid cooling box is connected to the outlet of the dry cooler through a second butterfly valve, a second pressure sensor, a second temperature sensor, and a first flow meter in sequence, wherein the second butterfly valve is used to control the flow rate of the liquid medium flowing out of the dry cooler and entering the liquid cooling box, and the second pressure sensor, the second temperature sensor, and the first flow meter are used to measure the pressure, temperature, and flow rate of the liquid medium entering the second opening of the liquid cooling box, respectively;

[0019] The first butterfly valve, the first pressure sensor, the first temperature sensor, the second butterfly valve, the second pressure sensor, the second temperature sensor, and the first flow meter are electrically connected to the control unit, respectively.

[0020] As a further improvement of the present application, a first metal hose is provided between the first opening of the liquid cooling box and the first butterfly valve; and a second metal hose is provided between the second opening of the liquid cooling box and the second butterfly valve.

[0021] As a further improvement of the present application, it also includes a pressure-bearing branch pipeline, which includes a first ball valve and an expansion tank connected in sequence to the pipeline between the first butterfly valve and the inlet of the main circulation pump, and the first ball valve and the expansion tank are electrically connected to the control unit respectively.

[0022] As a further improvement of the present application, it also includes a bypass valve, one end of which is connected to a pipeline connecting the second opening of the liquid cooling box and the outlet of the dry cooler, and the other end is connected to a pipeline connecting the outlet of the main circulation pump and the inlet of the dry cooler. The bypass valve is also electrically connected to the control unit for mixing the uncooled liquid medium with the cooled liquid medium.

[0023] As a further improvement of the present application, a second pressure gauge is provided on the pipeline connecting the outlet of the main circulation pump and the inlet of the dry cooler, and the second pressure gauge is electrically connected to the control unit.

[0024] As a further improvement of the present application, the outlet of the fluid replenishment circulation pump is connected to the first opening of the liquid cooling box and the pipeline connected to the main circulation pump through a three-way valve, a one-way valve, a first pressure gauge, and a second ball valve in sequence. The three-way valve is also connected to the fourth opening of the liquid medium storage tank for returning the liquid medium to the liquid medium storage tank. The three-way valve, the one-way valve, the first pressure gauge, and the second ball valve are electrically connected to the control unit, respectively.

[0025] As a further improvement of the present application, the third opening of the liquid medium storage tank is connected to the inlet of the liquid replenishment circulation pump through a third butterfly valve, a filter, and a fourth butterfly valve in sequence, and the third butterfly valve and the fourth butterfly valve are electrically connected to the control unit respectively.

[0026] As a further improvement of the present application, it also includes an external fluid replenishment unit, which is connected to the internal fluid replenishment circulation unit, and is connected to a second flow meter, a solenoid valve, and a third ball valve in sequence with the third opening of the liquid medium storage tank, and is connected to the external liquid medium through the third ball valve. The second flow meter, the solenoid valve, and the third ball valve are electrically connected to the control unit, respectively.

[0027] As a further improvement of the present application, a low liquid level sensor and a high liquid level sensor are further provided on the liquid medium storage tank, and the low liquid level sensor and the high liquid level sensor are electrically connected to the control unit respectively to facilitate observation of the liquid condition in the liquid medium storage tank.

[0028] The beneficial effects of the present application are as follows: the present application relates to a closed liquid cooling circulation system for a data center, including a main circulation unit, an internal liquid replenishment circulation unit and a control unit. Among them: the main circulation unit includes a liquid cooling box, a main circulation pump, and a dry cooler, and the main circulation pump drives the liquid cooling medium to circulate between the liquid cooling box and the dry cooler. When the pipeline of the main circulation unit lacks liquid medium, the internal liquid replenishment circulation unit can replenish liquid to the pipeline of the main circulation unit. This modular closed pump group design can be flexibly applied to small and medium-sized data center processor components, and the control unit can control the self-operation of the main circulation unit and the automatic replenishment of the internal liquid replenishment circulation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a closed liquid cooling circulation system for a data center in Example 1.

[0030] In the figure: 1, liquid cooling box; 2, main circulation pump; 3, dry cooler; 4, first metal hose; 5, first butterfly valve; 6, second metal hose; 7, second butterfly valve; 8, first pressure sensor; 9, first temperature sensor; 10, second pressure sensor; 11, second temperature sensor; 12, first flow meter; 13, first ball valve; 14, third metal hose; 15, expansion tank; 16, bypass valve; 17, liquid medium storage tank; 18, replenishment circulation pump; 19, three-way valve; 20, one-way valve; 21, first pressure gauge; 22, fourth metal hose; 23, second ball valve; 24, fifth metal hose; 25, third butterfly valve; 26, filter; 27, fourth butterfly valve; 28, sixth metal hose; 29, low liquid level sensor; 30, high liquid level sensor; 31, second flow meter; 32, solenoid valve; 33, third ball valve; 34, second pressure gauge. DETAILED DESCRIPTION

[0031] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0032] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0033] The present application provides a closed liquid cooling circulation system for a data center, including a main circulation unit, an internal liquid replenishment circulation unit and a control unit. Among them:

[0034] The main circulation unit includes a liquid cooling box 1, a main circulation pump 2, and a dry cooler 3, wherein: the liquid cooling box 1 is arranged adjacent to the data center processor component, and is used to store liquid medium for cooling the processor component, and the liquid cooling box 1 includes a first opening and a second opening; the inlet of the main circulation pump 2 is connected to the first opening of the liquid cooling box 1, and is used to extract the liquid medium in the liquid cooling box 1 and promote its circulation; the inlet of the dry cooler 3 is connected to the outlet of the main circulation pump 2, and is used to receive the hot liquid medium flowing out of the liquid cooling box 1 for cooling, and the outlet of the dry cooler 3 is connected to the second opening of the liquid cooling box 1, and under the action of the main circulation pump 2, it flows back to the liquid cooling box 1.

[0035] The internal liquid replenishment circulation unit is arranged on the pipeline connecting the first opening of the liquid cooling box 1 and the main circulation pump 2, and includes a liquid medium storage tank 17 and a liquid replenishment circulation pump 18, wherein: the liquid medium storage tank 17 is used to store liquid medium, and the liquid medium storage tank 17 includes a third opening and a fourth opening; the inlet of the liquid replenishment circulation pump 18 is connected to the third opening of the liquid medium storage tank 17, and the outlet of the liquid replenishment circulation pump 18 is connected to the pipeline connecting the first opening of the liquid cooling box 1 and the main circulation pump 2, and is used to extract the liquid medium in the liquid medium storage tank 17 and push it into the pipeline of the main circulation system.

[0036] The main circulation pump 2, the dry cooler 3, and the liquid replenishment circulation pump 18 are electrically connected to the control unit respectively. Preferably, the control unit can be a PLC controller.

[0037] In an optional embodiment, the first opening of the liquid cooling box 1 is connected to the inlet of the main circulation pump 2 through the first butterfly valve 5, the first pressure sensor 8, and the first temperature sensor 9 in sequence. The first butterfly valve 5 is used to control the flow rate of the liquid medium flowing out of the liquid cooling box 1 and entering the main circulation pump 2. The first pressure sensor 8 and the first temperature sensor 9 are respectively used to measure the pressure and temperature of the liquid medium entering the inlet of the main circulation pump 2; the second opening of the liquid cooling box 1 is connected to the outlet of the dry cooler 3 through the second butterfly valve 7, the second pressure sensor 10, the second temperature sensor 11, and the first flowmeter 12 in sequence. The second butterfly valve 7 is used to control the flow rate of the liquid medium flowing out of the dry cooler 3 and entering the liquid cooling box 1. The second pressure sensor 10, the second temperature sensor 11, and the first flowmeter 12 are respectively used to measure the pressure, temperature, and flow rate of the liquid medium entering the second opening of the liquid cooling box 1. The first butterfly valve 5, the first pressure sensor 8, the first temperature sensor 9, the second butterfly valve 7, the second pressure sensor 10, the second temperature sensor 11, and the first flowmeter 12 are also electrically connected to the control unit. Among them: the first butterfly valve 5 and the second butterfly valve 7 can control the flow rate of the liquid and adjust the pressure of the liquid; the setting of the pressure sensor and the temperature sensor can be used to monitor the pressure and temperature of the liquid medium in real time to ensure the safe operation of the system.

[0038] Preferably, a first metal hose 4 is provided between the first opening of the liquid cooling box 1 and the first butterfly valve 5; a second metal hose 6 is provided between the second opening of the liquid cooling box 1 and the second butterfly valve 7. The first metal hose 4 and the second metal hose 6 are used for flexible connection to avoid damage to the pipeline due to vibration and to increase the service life of the liquid cooling circulation system.

[0039] In an optional embodiment, a pressure-bearing branch pipeline is also included, and the pressure-bearing branch pipeline includes a first ball valve 13 and an expansion tank 15 which are sequentially connected to the pipeline between the first butterfly valve 5 and the inlet of the main circulation pump 2, and the first ball valve 13 and the expansion tank 15 are electrically connected to the control unit respectively. The design of the pressure-bearing branch pipeline aims to prevent the liquid medium in the pipeline from expanding and contracting due to water temperature fluctuations, thereby causing damage to the pipeline due to excessive pipeline pressure. The expansion tank 15 can accommodate water that exceeds the normal pressure of the pipeline. Preferably, the expansion tank 15 is connected to the first ball valve 13 through the third metal hose 14. The function of the third metal hose 14 is the same as that of the first metal hose 4 and the second metal hose 6, which prevents the pipeline from being damaged due to vibration.

[0040] In an optional embodiment, a bypass valve 16 is also included, one end of which is connected to a pipeline connecting the second opening of the liquid cooling box 1 and the outlet of the dry cooler 3, and the other end is connected to a pipeline connecting the outlet of the main circulation pump 2 and the inlet of the dry cooler 3. The bypass valve 16 is also electrically connected to the control unit to mix the uncooled liquid medium with the cooled liquid medium. Because the central processing component needs to work at a certain temperature, if the temperature of the cooled liquid medium is too low, it will be detrimental to the operation of the central processing component, for example, in an extremely cold environment. The design of the bypass valve 16 can maintain the liquid medium entering the liquid cooling box 1 under certain temperature conditions, ensure the normal operation of the central processing component, and save energy.

[0041] In an optional embodiment, a second pressure gauge 34 is provided on the pipeline connecting the outlet of the main circulation pump 2 and the inlet of the dry cooler 3. The second pressure gauge 34 is used to measure the pressure at the outlet of the main circulation pump 2. The second pressure gauge 34 is electrically connected to the control unit.

[0042] In an optional embodiment, the outlet of the liquid replenishment circulation pump 18 is connected to the pipeline connected to the first opening of the liquid cooling box 1 and the main circulation pump 2 through the three-way valve 19, the one-way valve 20, the first pressure gauge 21, and the second ball valve 23 in sequence. The three-way valve 19 is also connected to the fourth opening of the liquid medium storage tank 17. The three-way valve 19, the one-way valve 20, the first pressure gauge 21, and the second ball valve 23 are also electrically connected to the control unit respectively, for returning the liquid medium to the liquid medium storage tank 17; the third opening of the liquid medium storage tank 17 is connected to the inlet of the liquid replenishment circulation pump 18 through the third butterfly valve 25, the filter 26, and the fourth butterfly valve 27 in sequence. Preferably, the fourth butterfly valve 27 is connected to the inlet of the liquid replenishment circulation pump 18 through the sixth metal hose 28, and the third butterfly valve 25 and the fourth butterfly valve 27 are electrically connected to the control unit respectively. The function of the sixth metal hose 28 is the same as that of the first metal hose 4 and the second metal hose 6, which prevents the pipeline from being damaged due to vibration. Preferably, the filter 26 is a Y-type filter.

[0043] In an optional embodiment, an external fluid replenishment unit is also included, the external fluid replenishment unit is connected to the internal fluid replenishment circulation unit, and the second flowmeter 31, the solenoid valve 32, and the third ball valve 33 are sequentially connected to the third opening of the liquid medium storage tank 17, and are connected to the external liquid medium through the third ball valve 33. The second flowmeter 31, the solenoid valve 32, and the third ball valve 33 are electrically connected to the control unit respectively. Preferably, a low liquid level sensor 29 and a high liquid level sensor 30 are also provided on the liquid medium storage tank 17, and the low liquid level sensor 29 and the high liquid level sensor 30 are electrically connected to the control unit respectively, so as to observe the liquid condition in the liquid medium storage tank 17. The external fluid replenishment circulation unit of the present application can correspond to several sets of internal fluid replenishment circulation units, which is convenient for fluid replenishment and management.

[0044] Example 1

[0045] This embodiment provides a closed liquid cooling circulation system for a data center, such as Figure 1 As shown, it includes a main circulation unit, an internal fluid replenishment circulation unit, an external fluid replenishment circulation unit and a control unit.

[0046] The main circulation unit includes a liquid cooling box 1, a main circulation pump 2, a dry cooler 3, a bypass valve 16, and a second pressure gauge 34. The first opening of the liquid cooling box 1 is connected to the inlet of the main circulation pump 2 through the first metal hose 4, the first butterfly valve 5, the first pressure sensor 8, and the first temperature sensor 9 in sequence. The second opening of the liquid cooling box 1 is connected to the outlet of the dry cooler 3 through the second metal hose 6, the second butterfly valve 7, the second pressure sensor 10, the second temperature sensor 11, and the first flow meter 12 in sequence. The outlet of the main circulation pump 2 is connected The inlet of the dry cooler 3, a second pressure gauge 34 is arranged on the pipeline connecting the outlet of the main circulation pump 2 and the inlet of the dry cooler 3, a pressure branch pipeline is arranged on the pipeline between the first temperature sensor 9 and the inlet of the main circulation pump 2, the pressure branch pipeline includes a third metal hose 14, a first ball valve 13 and an expansion tank 15 which are connected to the pipeline in sequence, one end of the bypass valve 16 is connected to the pipeline between the first flow meter 12 and the outlet of the dry cooler 3, and the other end of the bypass valve 16 is connected to the pipeline between the outlet of the main circulation pump 2 and the inlet of the dry cooler 3.

[0047] An internal liquid replenishment circulation unit is connected to the pipeline between the first temperature sensor 9 and the inlet of the main circulation pump 2, which includes a liquid medium storage tank 17 and a liquid replenishment circulation pump 18. The outlet of the liquid replenishment circulation pump 18 is connected to the pipeline between the first temperature sensor 9 and the inlet of the main circulation pump 2 through a three-way valve 19, a one-way valve 20, a first pressure gauge 21, a fourth metal hose 22, and a second ball valve 23 in sequence. The three-way valve 19 is also connected to the fourth opening of the liquid medium storage tank 17 through a fifth metal hose 24. The third opening of the liquid medium storage tank 17 is connected to the inlet of the liquid replenishment circulation pump 18 through a third butterfly valve 25, a filter 26, a fourth butterfly valve 27, and a sixth metal hose 28 in sequence.

[0048] An external liquid replenishment circulation unit is connected to the pipeline between the third butterfly valve 25 and the filter 26 , which includes a second flow meter 31 , a solenoid valve 32 , and a third ball valve 33 connected to the pipeline in sequence, and is connected to the external liquid medium through the third ball valve 33 .

[0049] A low liquid level sensor 29 and a high liquid level sensor 30 are also provided on the liquid medium storage tank 17 to facilitate observation of the liquid condition in the liquid medium storage tank 17 .

[0050] The main circulation pump 2, the dry cooler 3, the bypass valve 16, the second pressure gauge 34, the first butterfly valve 5, the first pressure sensor 8, the first temperature sensor 9, the second butterfly valve 7, the second pressure sensor 10, the second temperature sensor 11, the first flow meter 12, the first ball valve 13, the expansion tank 15, the bypass valve 16, the liquid replenishment circulation pump 18, the three-way valve 19, the one-way valve 20, the first pressure gauge 21, the second ball valve 23, the third butterfly valve 25, the fourth butterfly valve 27, the second flow meter 31, the solenoid valve 32, the third ball valve 33, the low liquid level sensor 29 and the high liquid level sensor 30 are electrically connected to the control unit respectively.

[0051] The working principle of the closed liquid cooling circulation system for a data center in Example 1 of the present application is as follows:

[0052] Working principle of the main circulation unit: When the data center processor component is running, a large amount of heat will be generated. This heat is transferred to the liquid medium in the liquid cooling box 1 and taken out through the liquid medium. The liquid medium can be water, ethylene glycol, oil, etc. The liquid medium enters the dry cooler 3 through the first metal hose 4, the first butterfly valve 5, the first pressure sensor 8, the first temperature sensor 9, and the main circulation pump 2 for cooling, and then flows back to the liquid cooling box 1 through the first flow meter 12, the second temperature sensor 11, the second pressure sensor 10, the second butterfly valve 7, and the second metal hose 6. Finally, the heat generated by the data center processor component is cooled through the closed circulation system. Under extremely cold environmental conditions, the bypass valve 16 can be opened to mix the uncooled liquid medium with the cooled liquid medium, so that the data center processor component can work under a liquid medium with a balanced temperature. When the second pressure gauge 34 detects that the pressure of the main circulation pump 2 is too high, or the first pressure sensor 8 detects that the pressure of the pipeline entering the inlet of the main circulation pump 2 is too high, the first ball valve 13 can be opened, and the expansion valve can be used to accommodate water exceeding the normal pressure of the pipeline.

[0053] Working principle of the internal liquid replenishment circulation unit: When the second pressure sensor 10 detects that the pressure of the liquid medium entering the liquid cooling box 1 is low, and the first temperature sensor 9 detects that the temperature of the liquid medium flowing out of the liquid cooling box 1 is abnormally high, it is considered that the main circulation unit lacks liquid medium and needs to be replenished. At this time, the three-way valve 19 and the liquid replenishment circulation pump 18 are opened, and the liquid medium enters the main circulation unit from the third opening of the liquid medium storage box 17 through the third butterfly valve 25, the filter 26, the fourth butterfly valve 27, the sixth metal hose 28, the liquid replenishment circulation pump 18, the three-way valve 19, the one-way valve 20, the fourth metal hose 22, and the second ball valve 23 in sequence, and the first pressure gauge 21 is used to display the pressure of the replenishment.

[0054] When the internal fluid replenishment circulation unit finishes replenishing the fluid, the three-way valve 19 is closed. At this time, the pipeline of the internal fluid replenishment circulation unit is cut off from the pipeline of the main circulation unit, and the fluid replenishment circulation pump 18 will delay for a period of time to stop working. In this device, the liquid medium flows from the third opening of the liquid medium storage tank 17 through the third butterfly valve 25, the filter 26, the fourth butterfly valve 27, the sixth metal hose 28, the fluid replenishment circulation pump 18, the three-way valve 19, the fifth metal hose 24, and then flows back to the liquid medium storage tank 17 through the fourth opening of the liquid medium storage tank 17 to form an internal circulation. The purpose of the internal circulation is to prevent the pump outlet pressure from suddenly increasing after the fluid replenishment circulation pump 18 stops, causing damage to the pump.

[0055] Working principle of the external liquid replenishment circulation unit: when the liquid level in the liquid medium storage tank 17 is low, the low liquid level sensor 29 can detect its liquid level, and the liquid medium enters the liquid medium storage tank 17 through the third ball valve 33, the solenoid valve 32, the second flow meter 31, and the third butterfly valve 25, until the high liquid level sensor 30 detects the liquid level in the liquid medium storage tank 17, then the external liquid replenishment is stopped and the solenoid valve 32 is closed.

[0056] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A closed liquid cooling circulation system for a data center, characterized in that: It includes a main circulation unit, an internal fluid replenishment circulation unit and a control unit, wherein: The main loop unit includes: A liquid cooling box, the liquid cooling box is arranged adjacent to the data center processor assembly and is used to store a liquid medium for cooling the processor assembly, the liquid cooling box comprising a first opening and a second opening; A main circulation pump, the inlet of which is connected to the first opening of the liquid cooling box, and is used to extract the liquid medium in the liquid cooling box and promote its circulation; A dry cooler, wherein the inlet of the dry cooler is connected to the outlet of the main circulation pump, and the outlet of the dry cooler is connected to the second opening of the liquid cooling box, and is used to receive the hot liquid medium flowing out of the liquid cooling box, and after cooling, the hot liquid medium flows back to the liquid cooling box under the action of the main circulation pump; The internal liquid replenishment circulation unit is arranged on a pipeline connecting the first opening of the liquid cooling box and the main circulation pump, and includes: A liquid medium storage box, the liquid medium storage box is used to store liquid medium, and the liquid medium storage box includes a third opening and a fourth opening; A liquid replenishment circulation pump, wherein the inlet of the liquid replenishment circulation pump is connected to the third opening of the liquid medium storage tank, and the outlet of the liquid replenishment circulation pump is connected to the pipeline connecting the first opening of the liquid cooling box and the main circulation pump, and is used to extract the liquid medium in the liquid medium storage tank and push it into the pipeline of the main circulation system; The main circulation pump, the dry cooler, and the liquid replenishment circulation pump are electrically connected to the control unit respectively.

2. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: The first opening of the liquid cooling box is connected to the inlet of the main circulation pump through a first butterfly valve, a first pressure sensor, and a first temperature sensor in sequence, wherein the first butterfly valve is used to control the flow rate of the liquid medium flowing out of the liquid cooling box and entering the main circulation pump, and the first pressure sensor and the first temperature sensor are used to measure the pressure and temperature of the liquid medium at the inlet of the main circulation pump, respectively; The second opening of the liquid cooling box is connected to the outlet of the dry cooler through a second butterfly valve, a second pressure sensor, a second temperature sensor, and a first flow meter in sequence, wherein the second butterfly valve is used to control the flow rate of the liquid medium flowing out of the dry cooler and entering the liquid cooling box, and the second pressure sensor, the second temperature sensor, and the first flow meter are used to measure the pressure, temperature, and flow rate of the liquid medium entering the second opening of the liquid cooling box, respectively; The first butterfly valve, the first pressure sensor, the first temperature sensor, the second butterfly valve, the second pressure sensor, the second temperature sensor, and the first flow meter are electrically connected to the control unit, respectively.

3. The closed liquid cooling circulation system for a data center according to claim 2, characterized in that: A first metal hose is provided between the first opening of the liquid cooling box and the first butterfly valve; and a second metal hose is provided between the second opening of the liquid cooling box and the second butterfly valve.

4. The closed liquid cooling circulation system for a data center according to claim 2, characterized in that: It also includes a pressure-bearing branch pipeline, which includes a first ball valve and an expansion tank that are sequentially connected to the pipeline between the first butterfly valve and the inlet of the main circulation pump, and the first ball valve and the expansion tank are electrically connected to the control unit respectively.

5. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: It also includes a bypass valve, one end of which is connected to a pipeline connecting the second opening of the liquid cooling box and the outlet of the dry cooler, and the other end is connected to a pipeline connecting the outlet of the main circulation pump and the inlet of the dry cooler. The bypass valve is also electrically connected to the control unit and is used to mix the uncooled liquid medium with the cooled liquid medium.

6. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: A second pressure gauge is provided on a pipeline connecting the outlet of the main circulation pump and the inlet of the dry cooler, and the second pressure gauge is electrically connected to the control unit.

7. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: The outlet of the liquid replenishment circulation pump is connected to the first opening of the liquid cooling box and the pipeline connected to the main circulation pump through a three-way valve, a one-way valve, a first pressure gauge, and a second ball valve in sequence. The three-way valve is also connected to the fourth opening of the liquid medium storage tank for returning the liquid medium to the liquid medium storage tank. The three-way valve, the one-way valve, the first pressure gauge, and the second ball valve are electrically connected to the control unit respectively.

8. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: The third opening of the liquid medium storage tank is connected to the inlet of the liquid replenishment circulation pump through the third butterfly valve, the filter and the fourth butterfly valve in sequence, and the third butterfly valve and the fourth butterfly valve are electrically connected to the control unit respectively.

9. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: It also includes an external fluid replenishment unit, which is connected to the internal fluid replenishment circulation unit, and a second flow meter, a solenoid valve, and a third ball valve are connected to the third opening of the liquid medium storage tank in sequence, and are connected to the external liquid medium through the third ball valve. The second flow meter, the solenoid valve, and the third ball valve are electrically connected to the control unit respectively.

10. The closed liquid cooling circulation system for a data center according to claim 1, characterized in that: A low liquid level sensor and a high liquid level sensor are also provided on the liquid medium storage tank. The low liquid level sensor and the high liquid level sensor are electrically connected to the control unit respectively, so as to observe the liquid condition in the liquid medium storage tank.

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