CN-121985512-A - Data center wind-liquid fusion cooling system and control method thereof

CN121985512ACN 121985512 ACN121985512 ACN 121985512ACN-121985512-A

Abstract

The invention discloses a data center air-liquid fusion cooling system and a control method, wherein the system comprises a three-way valve, a condensation module, a liquid cooling module, an air cooling module and a gas-liquid separation device, a first interface of the three-way valve is connected with an outlet of the condensation module, an inlet of the condensation module is connected with the gas-liquid separation device, a second interface of the three-way valve is connected with an inlet of the liquid cooling module, an outlet of the liquid cooling module is connected with the gas-liquid separation device, a third interface of the three-way valve is connected with the gas-liquid separation device, and an inlet and an outlet of the air cooling module are connected with the gas-liquid separation device through pipelines. Through the control of the gas-liquid separation device and the three-way valve, the decoupling of the load and the temperature control of the liquid cooling module and the air cooling module can be realized, the advantages of liquid cooling and high-temperature cooling can be fully exerted, the natural cold source can be fully utilized, the requirement of air cooling and low-temperature cooling can be met, and the cooling performance of the system can be ensured.

Inventors

LI ZIYONG
ZHU LI
CHEN QIAN
SHI YUQI
Cao kunyuan
CHEN LI
WANG YUANYUAN
FU HAOQI
DONG YICHEN
LIU HONG
LUO HAILIANG
JIANG YUGUANG
WANG TIECHENG
LIU HAICHAO
WANG RIYING
XIAO HANSONG
WANG YUERU

Assignees

中国移动通信集团设计院有限公司
中国移动通信集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260214

Claims (10)

1. A data center air-liquid fusion cooling system is characterized by comprising a three-way valve, a condensing module, a liquid cooling module, an air cooling module and a gas-liquid separation device, wherein, The inlet of the condensing module is connected with the gas-liquid separation device; the outlet of the liquid cooling module is connected with the gas-liquid separation device; The third interface of the three-way valve is connected with the gas-liquid separation device; And the inlet and the outlet of the air cooling module are connected with the gas-liquid separation device through pipelines.
2. The cooling system of claim 1, wherein the cooling system comprises a first pipe, a second pipe, a third pipe, and a fourth pipe, the first pipe being connected to the second pipe and the third pipe; the first pipeline is provided with the condensation module and the gas-liquid separation device; The second pipeline is provided with the liquid cooling module; the third pipeline is provided with the air cooling module; the third interface of the three-way valve and the gas-liquid separation device form a fourth pipeline; The air cooling device comprises a condensing module, a liquid cooling module, a gas-liquid separation device, a pipeline, a gas outlet and a pipeline, wherein the outlet of the condensing module is connected with the inlet of the liquid cooling module through the pipeline, the outlet of the liquid cooling module is connected with the gas-liquid separation device through the pipeline, the inlet and the outlet of the air cooling module are both connected with the gas-liquid separation device through the pipeline, and the gas outlet of the gas-liquid separation device is connected with the inlet of the condensing module through the pipeline.
3. A cooling system according to claim 2, wherein, The first pipeline is also provided with a liquid storage tank and a first fluorine pump, the outlet of the condensing module is connected with the inlet of the liquid storage tank, the outlet of the liquid storage tank is connected with the inlet of the first fluorine pump, the outlet of the first fluorine pump is connected with the first interface of the three-way valve, the liquid storage tank is used for storing refrigerant, and the first fluorine pump is used for driving the liquid refrigerant to circulate; The first pipeline is also provided with a second compressor and a third one-way valve, an inlet of the second compressor is connected with a first interface of the gas-liquid separation device, and an outlet of the second compressor is connected with an inlet of the condensing module.
4. A cooling system according to claim 2, wherein, The third pipeline is provided with a second expansion valve, a first compressor and a third heat exchanger, an outlet of the second expansion valve is connected with an inlet of the third heat exchanger, and an outlet of the third heat exchanger is connected with an inlet of the first compressor; the third pipeline can be set to be a fluorine pump circulation, the third pipeline is further provided with a first one-way valve, a second fluorine pump and a second one-way valve, the first one-way valve is connected with the first compressor in parallel, and the second one-way valve is connected with the second fluorine pump in parallel.
5. A cooling system according to claim 2, wherein, The second pipeline is provided with a first expansion valve, the inlet of the first expansion valve is connected with the second port of the three-way valve, and the outlet of the first expansion valve is connected with the inlet of the second heat exchanger of the liquid cooling module; The fourth pipeline is provided with a third expansion valve, an outlet of the third expansion valve is connected with a fifth interface of the gas-liquid separation device, and the third expansion valve is connected with a third interface of the three-way valve.
6. The cooling system of any one of claims 2-5, wherein the system comprises a first electrically operated valve and a second electrically operated valve; the first electric valve is positioned on the second pipeline and is connected with the first fluorine pump outlet and the liquid cooling module inlet; The second electric valve is positioned on the fourth pipeline and is connected with the outlet of the first fluorine pump and the fifth interface of the gas-liquid separation device.
7. A control method of a data center wind-liquid fusion cooling system, wherein the method is applied to the data center wind-liquid fusion cooling system according to any one of claims 1 to 6, comprising: Dynamically adjusting the opening of the three-way valve and the opening of the first expansion valve based on the characteristic temperature monitoring value of the liquid cooling module and the power consumption data of the server; Switching an operation mode of the air cooling module corresponding to the fluorine pump circulation according to the outdoor temperature parameter, adjusting the frequency of the first compressor or the second fluorine pump by combining the characteristic temperature monitoring value of the air cooling module 320 and the power consumption data of the server, and adjusting the opening of the second expansion valve; based on liquid level data of the gas-liquid separation device and outlet parameters of the condensation module, the total refrigerant circulation flow of the system and the heat exchange effect of the condensation module are dynamically controlled through variable frequency control of the first fluorine pump and frequency adjustment of the first fan of the condensation module.
8. The method of claim 7, wherein dynamically adjusting the three-way valve opening and the first expansion valve opening based on the characteristic temperature monitoring value of the liquid cooling module and the server power consumption data, comprises: Judging whether the refrigerating capacity of the liquid cooling module reaches a first target refrigerating capacity range or not based on the characteristic temperature monitoring value of the liquid cooling module and the power consumption data of the server; If the refrigerating capacity of the liquid cooling module is larger than the first target refrigerating capacity range, adjusting the opening of the three-way valve, and increasing the flow ratio of the second interface of the three-way valve; If the refrigerating capacity of the liquid cooling module is smaller than the first target refrigerating capacity range, adjusting the opening of the three-way valve, and reducing the flow ratio of the second interface of the three-way valve; If the refrigerating capacity of the liquid cooling module is in the first target refrigerating capacity range, adjusting the opening of the three-way valve, and maintaining the flow ratio of the second interface of the three-way valve; If the superheat degree of the outlet of the liquid cooling module is smaller than the first target superheat degree range, reducing the opening of the first expansion valve; If the superheat degree of the outlet of the liquid cooling module is larger than the first target superheat degree range, increasing the opening of the first expansion valve; and if the superheat degree of the outlet of the liquid cooling module is in the first target superheat degree range, maintaining the opening degree of the first expansion valve.
9. The method of claim 7, wherein switching the operation mode of the air cooling module corresponding to the fluorine pump cycle according to the outdoor temperature parameter, adjusting the frequency of the first compressor or the second fluorine pump and adjusting the opening of the second expansion valve in combination with the characteristic temperature monitoring value of the air cooling module and the server power consumption data, comprises: If the outdoor temperature parameter is smaller than the lower limit value of the target temperature range, switching to an all-natural cooling mode, wherein the first compressor is in a closed state in the all-natural cooling mode, and the second fluorine pump is in an operating state; if the outdoor temperature parameter is larger than the lower limit value of the target temperature range and smaller than the upper limit value of the target temperature range, switching to a partial natural cooling mode, wherein the second fluorine pump and the first compressor are in an operating state in the partial natural cooling mode; If the outdoor temperature parameter is greater than the upper limit value of the target temperature range, switching to a compression refrigeration mode, wherein the second fluorine pump is in a closed state in the compression refrigeration mode, and the first compressor is in an operating state; If the refrigerating capacity of the air cooling module is larger than a second target refrigerating capacity range, the frequency of the first compressor or the second fluorine pump is increased, wherein the refrigerating capacity of the air cooling module is determined according to the characteristic temperature monitoring value of the air cooling module and the power consumption data of the server; if the refrigerating capacity of the air cooling module is smaller than the second target refrigerating capacity range, reducing the frequency of the first compressor or the second fluorine pump; if the refrigerating capacity of the air cooling module is in the second target refrigerating capacity range, maintaining the frequency of the first compressor or the second fluorine pump; If the superheat degree of the outlet of the air cooling module is larger than a second target superheat degree range, increasing the opening of the second expansion valve; If the superheat degree of the outlet of the air cooling module is smaller than a second target superheat degree range, reducing the opening of the second expansion valve; and if the superheat degree of the outlet of the air cooling module is in a second target superheat degree range, maintaining the opening degree of the second expansion valve.
10. The method of claim 7, wherein dynamically controlling the total refrigerant circulation flow of the system and the heat exchange effect of the condensing module based on the liquid level data of the gas-liquid separation device and the outlet parameters of the condensing module by frequency conversion control of the first fluorine pump and frequency adjustment of the first fan of the condensing module, comprises: If the liquid level height of the gas-liquid separation device is smaller than the target height range, increasing the frequency of the first fluorine pump; if the liquid level height of the gas-liquid separation device is greater than the target height range, reducing the frequency of the first fluorine pump; if the supercooling degree of the condenser outlet is smaller than the target supercooling degree range, the rotating speed of the first fan is increased; if the supercooling degree of the outlet of the condenser is larger than the target supercooling degree range, reducing the rotating speed of the first fan; if the pressure difference between the outlet of the liquid cooling module and the outlet of the condenser is smaller than the target pressure threshold, the second compressor is controlled not to operate; And if the pressure difference between the liquid cooling module outlet and the condenser outlet is larger than the target pressure threshold, controlling the second compressor to run.

Description

Data center wind-liquid fusion cooling system and control method thereof Technical Field The application relates to the technical field of data centers, in particular to a wind-liquid fusion cooling system of a data center and a control method thereof. Background With the rapid growth of high-density computing demands, data center heat dissipation technology has become an important point of research. The prior art mainly realizes the efficient heat dissipation target from two dimensions of cooling medium selection and system architecture design. On one hand, a cooling frame taking a liquid medium (such as water or fluoridized liquid) as a heat transfer carrier is constructed by a liquid cooling technology, and on the other hand, a wind-liquid fusion cooling system is designed based on a combination mode of wind cooling and liquid cooling so as to meet the heat dissipation requirements of different heating elements. These solutions provide technical support for safe operation and energy efficiency improvement of the data center. The cold plate type liquid cooling occupies a large application proportion in the data center due to the characteristics of strong adaptability, convenient deployment and the like. The technical frame mainly comprises a circulating system of primary cooling liquid and secondary cooling liquid and direct heat exchange of the cold plate device on the heating element of the server. In a typical flow, primary cooling liquid enters a cold liquid distribution device (CDU) through a cold source, and returns to the cold source after heat exchange with secondary cooling liquid through a heat exchanger, while secondary cooling liquid is conveyed to a cold plate in a server, and returns to the CDU after absorbing heat of high-heat-density elements such as a CPU (Central processing Unit), a GPU (graphics processing Unit) and the like, so that cooling circulation is completed. The technology can use a cooling liquid with higher temperature (for example, the temperature of the secondary side can reach more than 50 ℃), thereby more effectively utilizing a natural cold source and improving the energy-saving effect. In the air-liquid fusion system, cold plate type liquid cooling is generally responsible for heat dissipation of high-heat-density electronic devices, and heat of low-heat-density components is processed by an air cooling system. The liquid cooling module and the air cooling module have obvious difference in the requirements on the temperature of the cooling medium, the liquid cooling system can operate at a higher temperature to improve the energy efficiency, and the air cooling system needs cold air supply at a lower temperature. The fluorine system has wide application prospect in cold plate type liquid cooling due to good thermodynamic performance and flexibility. Aiming at the air-liquid fusion requirement, the prior art has proposed various solutions based on fluorine systems, including modes of independent operation of air cooling and liquid cooling, serial operation and the like, and a diversified cooling system structure is constructed. The existing cooling system has the technical problems that firstly, an independent circulating system is adopted for air cooling and liquid cooling, so that the system is complex, the pipeline layout is complicated, the construction difficulty and the operation and maintenance cost are increased, and secondly, the flow or the temperature of the air cooling and liquid cooling module are mutually bound, and cannot be independently regulated according to actual requirements, so that the operation efficiency of the system is affected. Disclosure of Invention The application provides a data center air-liquid fusion cooling system which aims to solve the technical problems that an independent circulating system is adopted for air cooling and liquid cooling, so that the system is complex, the pipeline layout is tedious, the construction difficulty and the operation and maintenance cost are increased, and secondly, the flow or the temperature of an air cooling module and the liquid cooling module are mutually bound and cannot be independently regulated according to actual requirements, so that the operation efficiency of the system is affected. In a first aspect, a data center air-liquid fusion cooling system is provided, comprising a three-way valve, a condensing module, a liquid cooling module, an air cooling module and a gas-liquid separation device, wherein, The inlet of the condensing module is connected with the gas-liquid separation device; the outlet of the liquid cooling module is connected with the gas-liquid separation device; The third interface of the three-way valve is connected with the gas-liquid separation device; And the inlet and the outlet of the air cooling module are connected with the gas-liquid separation device through pipelines. In some embodiments, the cooling system includes a first pipe, a second pipe, a third pipe, and a fou