Movable cold source for immersed liquid cooling data center

Abstract

The utility model relates to a mobile cold source for an immersed liquid cooling data center, which comprises a mobile cabinet, and a high-temperature liquid cooling liquid pipeline, a liquid pump, a heat exchanger, a compression refrigerating machine, a cold storage unit and a low-temperature liquid cooling liquid pipeline which are arranged on the mobile cabinet, and high-temperature liquid cooling liquid sequentially flows through the high-temperature liquid cooling liquid pipeline, the liquid pump and the heat exchanger. The compression refrigerator is used for refrigerating the heat exchanger; a liquid cooling liquid outlet of the heat exchanger is connected to a low-temperature liquid cooling liquid pipeline through a first valve and is also connected to the low-temperature liquid cooling liquid pipeline through a cold storage unit; the movable cold source further comprises a storage battery which is used for supplying power. The movable cabinet design is adopted, so that the device is convenient to move and can directly reach an inspection and maintenance point; besides, the compression type refrigerating machine and the cold storage unit are integrated, the dual functions of double cold sources and cold storage are achieved, and the functions of non-stop on-line maintenance and on-line cold storage module replacement of IT equipment can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid cooling energy saving, and in particular relates to a mobile cold source for an immersion liquid cooling data center. Background Art

[0002] In order to meet the urgent needs of high-performance AI data centers for high density, high energy consumption, low PUE, low WUE, and low CUE, as well as the demand and density of high-performance computing, data centers need a lot of energy consumption to meet the power needs of IT equipment, power supply and refrigeration equipment to solve the heat dissipation problem of servers. Traditional air cooling is no longer sustainable. The advantages of immersion liquid cooling and waste heat utilization using insulating coolant are used to promote computing centers to adopt immersion liquid cooling solutions. In the future era of large computing power, immersion liquid cooling data centers will become the mainstream of the market.

[0003] At present, medium and large data centers mainly use chilled water air conditioning systems (central air conditioning). In order to achieve continuous cooling, cold storage energy storage technology is usually used as a cold source backup. Small and micro data centers mainly use direct expansion air conditioning systems (split air conditioners); single-phase immersion data centers using insulating coolant usually do not have technologies and products that can guarantee continuous cooling because they use natural cold sources for free cooling.

[0004] The emergency cooling system of a large data center is a cooling system that controls the temperature of the data center in an emergency. When the main air-conditioning system is temporarily shut down due to a fault, the emergency cooling system can immediately take over the cooling work, so it is also known as the "insurance" of the data center. For high-power, high-heat flux density data centers, equipping with an emergency cooling system can further improve the reliability of system operation. In addition, the power density of AI computing power data centers is high, and the value of a single server is very high. Once redundant auxiliary components are damaged, in order to reduce the impact on the entire system, online maintenance functions are required so as not to affect the normal operation of the business.

[0005] Generally speaking, emergency refrigeration systems can be divided into two categories according to different cold sources: one is a dual-cold-source air-conditioning system, and the other is a cold storage refrigeration system. Therefore, there is an urgent need to develop a composite refrigeration system in this field. Utility Model Content

[0006] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide a mobile cooling source for an immersion liquid-cooled data center that meets one or more of the above-mentioned needs.

[0007] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0008] A mobile cold source for an immersion liquid-cooled data center comprises a mobile cabinet and a high-temperature liquid-cooled coolant pipeline, a liquid pump, a heat exchanger, a compression refrigerator, a cold storage unit and a low-temperature liquid-cooled coolant pipeline installed on the mobile cabinet, wherein the high-temperature liquid-cooled coolant flows through the high-temperature liquid-cooled coolant pipeline, the liquid pump and the heat exchanger in sequence, and the compression refrigerator is used to cool the heat exchanger; the liquid-cooled coolant outlet of the heat exchanger is connected to the low-temperature liquid-cooled coolant pipeline through a first valve, and is also connected to the low-temperature liquid-cooled coolant pipeline through the cold storage unit;

[0009] The mobile cold source also includes a battery, which is used for power supply.

[0010] As a preferred solution, the cold storage unit includes a cold storage body and a liquid inlet pipe and a liquid outlet pipe connected thereto, wherein the liquid outlet pipe is connected to a low-temperature liquid cooling coolant pipe;

[0011] Wherein, the liquid inlet pipeline and the liquid outlet pipeline are respectively provided with control valves.

[0012] As a preferred solution, there are N cold storage units, where N is an integer greater than 1;

[0013] The liquid inlet pipe of the first cold storage unit is connected to the liquid cooling coolant outlet of the heat exchanger;

[0014] The liquid inlet pipe of the i+1th cold storage unit is connected to the liquid outlet pipe of the ith cold storage unit, and the value of i ranges from 1 to N-1 in sequence;

[0015] Among them, the liquid outlet pipeline of the i-th cold storage unit is connected to the low-temperature liquid cooling coolant pipeline through the second valve.

[0016] As a preferred solution, the first valve, the second valve and the control valve are solenoid valves.

[0017] As a preferred solution, the mobile cabinet further includes a display screen for displaying the switch status of the first valve, the second valve, and the control valve.

[0018] As a preferred solution, a temperature sensor is provided at the inlet end of the high-temperature liquid-cooled coolant pipeline, and the display screen is also used to display the inlet temperature.

[0019] As a preferred solution, a temperature sensor is provided at the outlet end of the low-temperature liquid-cooling coolant pipeline, and the display screen is also used to display the outlet temperature.

[0020] As a preferred solution, the cold storage body is installed in a mobile cabinet in a plug-in manner.

[0021] As a preferred solution, the mobile cooling source further includes an external power plug for external power supply.

[0022] As a preferred solution, the mobile cabinet includes a cabinet and a plurality of rollers installed at the bottom of the cabinet.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] (1) The utility model adopts a mobile cabinet design, which is easy to move and can directly reach the maintenance point; moreover, it integrates a compression refrigerator and a cold storage unit, and has the dual functions of dual cold sources and cold storage;

[0025] (2) The utility model can maintain emergency cooling for 10-15 minutes (depending on the capacity of the battery + cold storage body) in the event of pump damage or even short-term power failure;

[0026] (3) The utility model has two energy storage methods: one is a storage battery, and the other is a cold storage body, that is, a phase change energy storage ball;

[0027] (4) The installation of the cold storage body of the utility model adopts a pull-in and pull-out structure, which is easy to replace;

[0028] (5) The cold storage units of the utility model can be operated together or in series, which is convenient for cascade relay operation to achieve uninterrupted cooling. By switching the valve group, at least one cold storage unit can be maintained in use during operation, and multiple cooling modes can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of a mobile cooling source for an immersion liquid-cooled data center according to Embodiment 1 of the present utility model;

[0030] Figure 2 It is a schematic diagram of the layout of the display screen of Example 1 of the utility model. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the embodiments of the utility model, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0032] Embodiment 1:

[0033] like Figure 1 As shown, the mobile cold source for the immersion liquid cooling data center of this embodiment includes a mobile cabinet and a high-temperature liquid cooling coolant pipeline 2, a liquid pump 3, a heat exchanger 4, a compression refrigerator 5, a cold storage unit, a low-temperature liquid cooling coolant pipeline 7 and a display screen 8 installed in the mobile cabinet.

[0034] The mobile cabinet of this embodiment includes a cabinet 11 and a plurality of rollers 12 installed at the bottom of the cabinet, so as to realize the mobile design of the cabinet 11. In addition, the cabinet 11 is provided with a handle 1, which is convenient for pushing and pulling the cabinet.

[0035] Specifically, the high-temperature liquid-cooled coolant flows through the high-temperature liquid-cooled coolant pipeline 2, the liquid pump 3, the heat exchanger 4, the compression refrigerator 5, and the heat exchanger 4 in sequence; the liquid-cooled coolant outlet of the heat exchanger 4 is connected to the low-temperature liquid-cooled coolant pipeline 7 through the valve V2, and is also connected to the low-temperature liquid-cooled coolant pipeline 7 through the cold storage unit. The specific structure of the heat exchanger can refer to the prior art and will not be repeated here.

[0036] In addition, the mobile cooling source further includes a battery 0, which is used to supply power to electrical components of the mobile cooling source (such as a compression refrigerator, a liquid pump, a display screen, etc.).

[0037] The present embodiment includes two groups of cold storage units, namely a first cold storage unit and a second cold storage unit.

[0038] Specifically, the first cold storage unit of the present embodiment includes a cold storage body I and a liquid inlet pipe I1 and a liquid outlet pipe I2 connected thereto, wherein the liquid inlet pipe I1 and the liquid outlet pipe I2 are respectively provided with a solenoid valve V1 and a solenoid valve V3; the liquid inlet pipe I1 is connected to the liquid cooling liquid outlet of the heat exchanger 4; the liquid outlet pipe I2 is also connected to the low-temperature liquid cooling liquid pipe 7 through a solenoid valve V6;

[0039] The second cold storage unit of this embodiment includes a cold storage body II and a liquid inlet pipe II1 and a liquid outlet pipe II2 connected thereto, wherein the liquid inlet pipe II1 and the liquid outlet pipe II2 are respectively provided with a solenoid valve V4 and a solenoid valve V5; the liquid inlet pipe II1 is connected to the liquid outlet pipe I2, and the liquid outlet pipe II2 is also connected to a low-temperature liquid cooling coolant pipe 7.

[0040] The cold storage body I and the cold storage body II of this embodiment are installed in the cabinet 11 in a plug-in manner, that is, a drawer structure is opened in the cabinet 11, which can be inserted into the installation hole of the cabinet 11 through a snap-on design. The specific plug-in + snap-on design can refer to the existing technology and will not be repeated here.

[0041] In this embodiment, a temperature sensor 9 is provided at the inlet end of the high-temperature liquid-cooled coolant pipeline 2, and a temperature sensor 10 is provided at the outlet end of the low-temperature liquid-cooled coolant pipeline 7, which are used to detect the inlet temperature and the outlet temperature respectively.

[0042] The display screen 8 of this embodiment is used to display the switch status of all electromagnetic valves V1-V6 and the inlet temperature and outlet temperature. Figure 2 shown.

[0043] In addition, the mobile cooling source of this embodiment is also designed with an external power plug for external power supply.

[0044] When the mobile cold source for the immersion liquid cooling data center of this embodiment is used for online operation and maintenance, the cold storage body I and the cold storage body II can be turned on / off by the solenoid valves V1-V6 to realize the following modes:

[0045] State A: High performance mode

[0046] V2V6 is closed, V1V3V4V5 is opened: the two groups of cold storage bodies work together; at this time, the compression refrigerators work together.

[0047] State B: Low power mode

[0048] V2V6 is closed, V1V3V4V5 is opened: the two groups of cold storage bodies work together; at this time, the compression refrigerator is shut down, and the coolant is cooled simply by heat exchange of the cold storage bodies.

[0049] State C: Ultra-low power mode 1

[0050] V2V4V5 are closed, V1V3V6 are opened: cold storage body I is working, cold storage body II is not working; cold storage body II can be replaced at this time, and the other equipment will not be affected.

[0051] State D: Ultra-low power mode 2

[0052] V1V3V6 is closed, V2V4V5 is open: cold storage body II is working, cold storage body I is not working; cold storage body I can be replaced at this time, and the other equipment will not be affected.

[0053] State E: High power mode

[0054] V1V3V4V5 are closed, V2V6 is open: cold storage body I and cold storage body II are not working; at this time, cold storage body I and cold storage body II can be removed and replaced with new cold storage bodies, or the refrigeration function of the cold storage bodies can be suspended, and the compression refrigerator can be used as the cold source alone. The liquid is circulated through the liquid pump, the compressor is cooled through the heat exchanger, and the high-temperature liquid is cooled through the heat exchanger.

[0055] The temperature sensor 9 and the temperature sensor 10 of this embodiment determine the heat accumulation condition of the accident cabinet, and determine the state of the above-mentioned mode through the incoming liquid temperature, that is, the reading of the temperature sensor 9, and the temperature difference between the temperature sensor 9 and the temperature sensor 10. Through the host computer program, the mobile cold source used in the immersion liquid cooling data center can judge by itself whether to adopt the state AE. In addition to the above-mentioned mode states, the presence of the battery can enable the mobile cold source to work first when an accident occurs, and then be put into external power supply. In addition, the automatic / manual state can be set on the display screen 8, and the operating status of each device and the fault signal prompt function can be displayed on the display screen.

[0056] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A mobile cooling source for an immersion liquid-cooled data center, characterized in that: The invention comprises a mobile cabinet and a high-temperature liquid-cooled coolant pipeline, a liquid pump, a heat exchanger, a compression refrigerator, a cold storage unit and a low-temperature liquid-cooled coolant pipeline installed in the mobile cabinet. The high-temperature liquid-cooled coolant flows through the high-temperature liquid-cooled coolant pipeline, the liquid pump and the heat exchanger in sequence. The compression refrigerator is used to cool the heat exchanger. The liquid-cooled coolant outlet of the heat exchanger is connected to the low-temperature liquid-cooled coolant pipeline through a first valve, and is also connected to the low-temperature liquid-cooled coolant pipeline through the cold storage unit. The mobile cold source also includes a battery, which is used for power supply.

2. The mobile cooling source according to claim 1, characterized in that: The cold storage unit comprises a cold storage body and a liquid inlet pipe and a liquid outlet pipe connected thereto, wherein the liquid outlet pipe is connected to a low-temperature liquid cooling coolant pipe; Wherein, the liquid inlet pipeline and the liquid outlet pipeline are respectively provided with control valves.

3. The mobile cooling source according to claim 2, characterized in that: There are N cold storage units, where N is an integer greater than 1; The liquid inlet pipe of the first cold storage unit is connected to the liquid cooling coolant outlet of the heat exchanger; The liquid inlet pipe of the i+1th cold storage unit is connected to the liquid outlet pipe of the ith cold storage unit, and the value of i ranges from 1 to N-1; Among them, the liquid outlet pipeline of the i-th cold storage unit is connected to the low-temperature liquid cooling coolant pipeline through the second valve.

4. The mobile cooling source according to claim 3, characterized in that: The first valve, the second valve and the control valve are solenoid valves.

5. The mobile cooling source according to claim 4, characterized in that: The mobile cabinet also includes a display screen for displaying the switch status of the first valve, the second valve, and the control valve.

6. The mobile cooling source according to claim 5, characterized in that: A temperature sensor is provided at the inlet end of the high-temperature liquid-cooled coolant pipeline, and the display screen is also used to display the inlet temperature.

7. The mobile cooling source according to claim 5, characterized in that: A temperature sensor is provided at the outlet end of the low-temperature liquid cooling coolant pipeline, and the display screen is also used to display the outlet temperature.

8. The mobile cooling source according to claim 2 or 3, characterized in that: The cold storage body is installed in a mobile cabinet in a plug-in manner.

9. The mobile cooling source according to claim 1, characterized in that: An external power plug is also included for external power supply.

10. The mobile cooling source according to claim 1, characterized in that: The mobile cabinet comprises a cabinet and a plurality of rollers installed at the bottom of the cabinet.

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