Liquid cooling device and testing method of liquid cooling device

Abstract

The present invention discloses a liquid cooling device and a testing method for the liquid cooling device, and relates to the field of liquid cooling testing technology. The liquid cooling device includes a cold water circulation system, a cold plate circulation system, and a data acquisition module. The cold water circulation system forms a heat exchange connection with the cold plate circulation system through a heat exchanger to cool the refrigerant in the cold plate circulation system. The cold plate circulation system includes a cold plate module, and the cold plate module includes a box body and a plurality of parallel rotating components. Each rotating component can be rotatably connected to the box body. Each rotating component includes a detection component, a regulating valve, and at least two cold plate bodies with heat sources connected in series. The data acquisition module is communicatively connected to the detection component, and the data acquisition module is used to collect refrigerant performance data detected by the detection component. The above-mentioned liquid cooling device solves the current problem of lack of performance testing of series-parallel combined two-phase cold plate liquid cooling systems.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling testing, and in particular to a liquid cooling device and a testing method for the liquid cooling device. Background Art

[0002] At present, with the vigorous development of cloud computing, big data, etc., low PUE (abbreviation of Power Usage Effectiveness, an indicator for evaluating the energy efficiency of data centers) and high heat dissipation density liquid cooling data center heat dissipation technology has emerged.

[0003] In the related technology, the two-phase cold plate liquid cooling system uses the latent heat of vaporization phase change of the working fluid to quickly take away the heat, which undoubtedly has the highest cooling efficiency. At the same time, the latent heat of phase change of the working fluid is much larger than the sensible heat, the circulating working fluid flow rate is smaller, and the power consumption of the circulating pump is lower, which must have a lower PUE value.

[0004] At present, the two-phase flow state and the resulting pressure oscillation in the series-parallel two-phase cold plate liquid cooling system are one of the key reasons limiting the large-scale application of two-phase cold plate liquid cooling technology. However, current tests are mainly focused on performance testing of a single heat source, including heat dissipation and pressure changes during operation. There is little attention paid to the performance testing of the two-phase cold plate liquid cooling system in different application scenarios, and there is a lack of performance testing platforms and research methods for the series-parallel two-phase cold plate liquid cooling system. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid cooling device and a testing method for the liquid cooling device, which solves the current problem of lack of performance testing of a series-parallel combined two-phase cold plate type liquid cooling system.

[0006] To achieve the above object, the present invention provides a liquid cooling device, comprising a cold water circulation system and a cold plate circulation system, wherein the cold water circulation system forms a heat exchange connection with the cold plate circulation system through a heat exchanger to cool the refrigerant in the cold plate circulation system;

[0007] The cold plate circulation system comprises a cold plate module, the cold plate module comprises a box body and a plurality of parallel rotating components, each of the rotating components can be rotatably connected to the box body, each of the rotating components comprises a detection component, a regulating valve and at least two cold plate bodies with heat sources connected in series, each of the rotating components is used to rotate relative to the box body so that the corresponding cold plate body rotates to a target angle, the detection component is used to detect the performance data of the refrigerant when the corresponding cold plate body rotates to the target angle, and the regulating valve is used to regulate the refrigerant flow of the corresponding cold plate body;

[0008] The liquid cooling device also includes a data acquisition module, which is communicatively connected to the detection component and is used to collect refrigerant performance data detected by the detection component.

[0009] In some embodiments, a first installation cavity is disposed in the box body, each of the rotating components is rotatably disposed in the first installation cavity, and the rotation axes of each of the rotating components are parallel to each other.

[0010] In some embodiments, the cold plate module further comprises a plurality of liquid phase quick connectors and a plurality of gas phase quick connectors, and the rotating assembly is connected with the corresponding liquid phase quick connectors and the gas phase quick connectors to form a cold plate branch;

[0011] The box body is further provided with a second installation cavity, which is separated from the first installation cavity, and each of the liquid phase quick connectors and each of the gas phase quick connectors are arranged in the second installation cavity.

[0012] In some embodiments, a liquid inlet pipeline and an air outlet pipeline are provided in the second installation cavity, the liquid inlet pipeline and the air outlet pipeline are provided on the same inner wall of the box body, and the liquid inlet pipeline is located above the air outlet pipeline, each of the liquid phase quick connectors is connected to the liquid inlet pipeline, and each of the gas phase quick connectors is connected to the air outlet pipeline.

[0013] In some embodiments, each of the rotating components also includes a rotating bracket, which is U-shaped, and the two ends of the rotating bracket are rotatably connected to the inner walls on both sides of the first mounting cavity, and the rotating bracket is used to install the detection component, the regulating valve and at least two cold plate bodies connected in series with the heat source on the corresponding cold plate branch.

[0014] In some embodiments, the rotating bracket is provided with a receiving groove for receiving the cold plate body, the depth of the receiving groove is greater than or equal to the thickness of the cold plate body, and the width of the receiving groove is equal to the width of the cold plate body.

[0015] In some embodiments, the box body is provided with a plurality of fixing holes, and the fixing holes correspond one to one with the rotating brackets;

[0016] The cold plate module further includes a plurality of fasteners, and the fasteners cooperate with the corresponding fixing holes to fix the positions of the corresponding rotating brackets and the box.

[0017] In some embodiments, the detection assembly includes a flow sensor, a temperature sensor and a pressure sensor, the number of the cold plate bodies on any of the cold plate branches is two, the number of the flow sensor is one, the number of the pressure sensors is four, and the number of the temperature sensors is three;

[0018] Among them, the flow sensor and the pressure sensor are provided between the liquid phase quick connector and the regulating valve, and the pressure sensor and the temperature sensor are provided between the two cold plate bodies, between the regulating valve and one of the cold plate bodies, and between the gas phase quick connector and the other cold plate body.

[0019] In some embodiments, the liquid cooling device also includes a control module, which is communicatively connected to the data acquisition module, the cold water circulation system, each of the regulating valves in the cold plate circulation system, and each of the heat sources. The control module is used to control the opening and closing of the cold water circulation system, each of the regulating valves in the cold plate circulation system, and each of the heat sources to switch different test scenarios, and is used to control the opening of each of the regulating valves in the same test scenario according to the data collected by the data acquisition module to adjust the refrigerant flow of the cold plate branch where the corresponding regulating valve is located.

[0020] In some embodiments, the control module is used to receive the refrigerant performance data of the corresponding cold plate branch collected by the data acquisition module, and to determine whether the refrigerant performance data of the corresponding cold plate branch reaches the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state, and to determine the corresponding driving control signal for adjusting the regulating valve when the refrigerant performance data of the corresponding cold plate branch does not reach the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state, so as to control the opening of the corresponding regulating valve, so that the refrigerant performance data of the corresponding cold plate branch reaches the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state.

[0021] In some embodiments, the liquid cooling device also includes a data recording module, which is communicatively connected to the data acquisition module and the control module. The data recording module is used to record the refrigerant performance data of each cold plate branch when the cold plate circulation system is in a stable state, and transmit it to the control module.

[0022] In some embodiments, the liquid cooling device also includes a prompt module, which is communicatively connected to the control module, and the prompt module is used to provide text or sound prompts when the refrigerant performance data of the corresponding cold plate branch reaches the refrigerant performance data of the corresponding cold plate branch required when the cold plate circulation system is in a stable state.

[0023] In some embodiments, the cold water circulation system includes a chiller and a first circulating water pump, the heat exchanger includes a cold water pipe, the cold water pipe is connected to the cold water circulation system, and the first circulating water pump is used to transport cold water from the chiller to the cold water pipe and return to the chiller for further cooling.

[0024] In some embodiments, the cold plate circulation system also includes a second circulating water pump, and the heat exchanger also includes a refrigerant pipe, the refrigerant pipe is connected to the cold plate circulation system, and the second circulating water pump is used to transport the refrigerant from the refrigerant pipe to the cold plate module and return to the refrigerant pipe for further cooling.

[0025] In some embodiments, the cold water circulation system and the cold plate circulation system both further include a liquid storage tank, the liquid storage tank in the cold water circulation system being used to store cold water to ensure that the cold water circulation system has water circulating under different load conditions, and the liquid storage tank in the cold plate circulation system being used to store refrigerant to ensure that the cold plate circulation system has refrigerant circulating under different load conditions.

[0026] In some embodiments, a drying filter is provided between the second circulating water pump and the cold plate module, and sight glasses are provided between the drying filter and the cold plate module and on both sides of the refrigerant pipeline.

[0027] The present invention further provides a method for testing a liquid cooling device, which is used to test any of the above-mentioned liquid cooling devices, and the method for testing the liquid cooling device comprises:

[0028] Control the regulating valves of the rotating components to be tested in the cold water circulation system and the cold plate circulation system and open the corresponding heat sources;

[0029] Controlling the rotating assembly to be tested to rotate so that the cold plate body of the rotating assembly to be tested is adjusted to a target angle;

[0030] After the cold plate circulation system is in a stable state, the detection component of the rotating component to be tested is controlled to be turned on, and the refrigerant performance data detected by the detection component is collected through the data collection module.

[0031] Relative to the above-mentioned background technology, the liquid cooling device provided by the embodiment of the present invention includes a cold water circulation system, a cold plate circulation system and a data acquisition module. Among them, the cold water circulation system forms a heat exchange connection with the cold plate circulation system through a heat exchanger to cool the refrigerant in the cold plate circulation system; the cold plate circulation system includes a cold plate module, the cold plate module includes a box body and a plurality of parallel rotating components, each rotating component can be rotatably connected to the box body, each rotating component includes a detection component, a regulating valve and at least two series-connected cold plate bodies with heat sources, each rotating component is used to rotate relative to the box body so that the corresponding cold plate body rotates to the target angle, the detection component is used to detect the performance data of the refrigerant when the corresponding cold plate body rotates to the target angle, and the regulating valve is used to regulate the refrigerant flow of the corresponding cold plate body; the data acquisition module is connected to the detection component for communication, and the data acquisition module is used to collect the refrigerant performance data detected by the detection component.

[0032] The testing method for a liquid cooling device provided in an embodiment of the present invention is used to test the above-mentioned liquid cooling device. The testing method for a liquid cooling device includes: controlling the regulating valve and the corresponding heat source of the rotating component to be tested in the cold water circulation system and the cold plate circulation system to open, controlling the rotation of the rotating component to be tested so that the cold plate body of the rotating component to be tested is adjusted to a target angle, and after the cold plate circulation system is in a stable state, controlling the detection component of the rotating component to be tested to open, and collecting the refrigerant performance data detected by the detection component through the data acquisition module.

[0033] Take the cold plate module with four parallel rotating components as an example:

[0034] For example, to conduct a single cold plate test: turn on the cold water circulation system and the cold plate circulation system, close the regulating valves in any three of the four parallel rotating components, and the heat sources corresponding to the remaining cold plate bodies in the remaining rotating component, leaving only the heat source corresponding to one cold plate body in working condition, and then control the rotation of the rotating component to be tested so that the cold plate body of the rotating component to be tested is adjusted to the target angle. When the system reaches a stable state, control the detection component of the rotating component to be tested to turn on, collect the refrigerant performance data detected by the detection component through the data acquisition module, and record the refrigerant performance data in real time to complete the performance test of the cold plate circulation system under different power consumption.

[0035] For another example, a series cold plate test is performed: the cold water circulation system and the cold plate circulation system are turned on, and the regulating valves in any three of the four parallel rotating components are closed, and only the heat sources corresponding to at least two cold plate bodies in one rotating component are kept in working state, and then the rotating component to be tested is controlled to rotate so that the cold plate body of the rotating component to be tested is adjusted to the corresponding target angle. When the system reaches a stable state, the detection component of the rotating component to be tested is controlled to be turned on, and the refrigerant performance data detected by the detection component is collected through the data acquisition module, and the refrigerant performance data is recorded in real time to complete the performance test of the cold plate circulation system under different power consumption.

[0036] For another example, to conduct a series-parallel coupled cold plate test: turn on the cold water circulation system and the cold plate circulation system, turn on all the regulating valves in the four parallel rotating components inside the cold plate module, keep the heat sources corresponding to all the cold plate bodies in the four parallel rotating components in working state, and then control the rotation of each rotating component to be tested so that the cold plate body of each rotating component to be tested is adjusted to the corresponding target angle. When the system reaches a stable state, control the detection component of the rotating component to be tested to turn on, collect the refrigerant performance data detected by the detection component through the data acquisition module, and record the refrigerant performance data in real time to complete the performance test of the cold plate circulation system under different power consumption.

[0037] The beneficial effects of such a setting mainly include:

[0038] The liquid cooling device and the testing method of the liquid cooling device provided by the present invention are suitable for the performance test (mainly including the heat dissipation performance test and the pressure oscillation characteristic test) of the series-parallel combined high-power consumption two-phase cold plate liquid cooling system. In particular, considering that the cold plate body is at different installation angles, the gas phase is concentrated in the upper part due to its small density, and the liquid phase is concentrated in the lower part due to its large density, which affects the contact between the two-phase flow state and the heat source at the bottom of the cold plate body, thereby affecting the phase change heat transfer and the internal pressure oscillation. Therefore, the present invention sets the component where the cold plate body is located as a rotating component, so that the angle of the cold plate body required for the test can be adjusted as needed during the test. It is not only suitable for the scene where the cold plate body is installed horizontally, but also suitable for the scene where the cold plate body is installed at any angle. The test scenarios involved include but are not limited to the performance test of a single cold plate, the series test of two cold plates, the series-parallel coupling test of four branches, etc. The above-mentioned setting method can be used to test the performance of the liquid cooling device in different test scenarios, thereby guiding the design of the server heat dissipation system, and dynamically allocate the flow according to the flow requirements of different branches to eliminate the heat dissipation risk. In addition, the above-mentioned liquid cooling device and the testing method of the liquid cooling device can also be directly applied to server products, such as OAM (Open Acceleration Module) form GPU (corresponding to the horizontally arranged cold plate body state) and PCIe (universal computer bus interface) card form GPU (corresponding to the vertically arranged cold plate body state). BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] FIG1 is a schematic diagram of the connection of a liquid cooling device according to an embodiment of the present invention;

[0041] FIG2 is a plan view of the cold plate module in the liquid cooling device shown in FIG1;

[0042] FIG3 is a vertical layout diagram of the cold plate module in the liquid cooling device shown in FIG1;

[0043] FIG4 is a schematic diagram of the four cold plate branches in the cold plate module shown in FIG3 being in a first position;

[0044] FIG5 is a schematic diagram of a single cold plate branch in the cold plate module shown in FIG3 being in a second position;

[0045] FIG6 is a schematic diagram of a single cold plate branch in the cold plate module shown in FIG3 being in a third position;

[0046] FIG7 is a schematic diagram of another connection of a liquid cooling device according to an embodiment of the present invention;

[0047] FIG8 is a control block diagram of the liquid cooling device shown in FIG7 ;

[0048] FIG. 9 is a flow chart of a method for testing a liquid cooling device according to an embodiment of the present invention.

[0049] in:

[0050] 10-cold water circulation system, 11-chilled water unit, 12-first circulating water pump, 13-heat exchanger, 131-cold water pipeline, 132-refrigerant pipeline, 14-liquid storage tank;

[0051] 20-cold plate circulation system, 21-second circulation water pump, 22-cold plate module, 221-box, 2211-first installation cavity, 2212-second installation cavity, 2213-fixing hole, 222-rotation component, 2221-rotation bracket, 22211-accommodation groove, 2222-flow sensor, 2223-temperature sensor, 2224-pressure sensor, 2225-regulating valve, 2226-cold plate body, 223-liquid phase quick connector, 224-gas phase quick connector, 225-liquid inlet pipeline, 226-gas outlet pipeline, 23-fastener, 24-drying filter, 25-sight glass;

[0052] 30-data acquisition module;

[0053] 40-control module, 41-receiving unit, 42-judgment unit, 43-control unit;

[0054] 50-data recording module;

[0055] 60-Prompt module. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] Please refer to FIG. 1 and FIG. 7 . The liquid cooling device provided in the embodiment of the present invention is suitable for two-phase cold plate liquid cooling, and includes a cold water circulation system 10 , a cold plate circulation system 20 and a data acquisition module 30 .

[0059] The cold water circulation system 10 forms a heat exchange connection with the cold plate circulation system 20 through the heat exchanger 13 to cool the refrigerant in the cold plate circulation system 20 .

[0060] The cold water circulation system 10 includes a chiller 11 and a first circulating water pump 12. The heat exchanger 13 (or condenser) includes a cold water pipe 131. The cold water pipe 131 is connected to the cold water circulation system 10. The first circulating water pump 12 is used to transport cold water from the chiller 11 to the cold water pipe 131 of the heat exchanger 13, and return it to the chiller 11 for further cooling.

[0061] Among them, the core function of the chiller 11 is refrigeration. It absorbs heat through the evaporation of refrigerant in the evaporator, thereby reducing the temperature of the circulating water. The first circulating water pump 12 is responsible for transporting the cold water cooled by the chiller 11 to the cold water pipe 131 of the heat exchanger 13, and allowing the cooled water to return to the chiller 11 to be cooled again, forming a closed-loop circulation system.

[0062] That is, in the cold water circulation system 10, the chiller 11 is responsible for providing a cold source, while the first circulating water pump 12 is responsible for transporting the cold source to the area that needs cooling (i.e., the cold water pipe 131 of the heat exchanger 13). The two work together to maintain the stable operation of the entire system.

[0063] In addition, the cold water circulation system 10 also includes a liquid storage tank 14 or a buffer tank and a flow meter (volumetric flow meter), wherein the liquid storage tank 14 is located between the chiller 11 and the first circulating water pump 12, and the liquid storage tank 14 is used to store cold water to ensure that the cold water circulation system 10 has sufficient water to circulate under different load conditions. The flow meter is located between the first circulating water pump 12 and the heat exchanger 13, and the flow meter is used to detect the flow of cold water in the cold water circulation system 10.

[0064] The cold plate circulation system 20 includes a second circulation water pump 21 and a cold plate module 22. The heat exchanger 13 also includes a refrigerant pipe 132. The refrigerant pipe 132 is connected to the cold plate circulation system 20. The second circulation water pump 21 is used to transport the refrigerant from the refrigerant pipe 132 of the heat exchanger 13 to the cold plate module 22, and return to the refrigerant pipe 132 for cooling again.

[0065] Please refer to Figures 2 and 3 together. The cold plate module 22 includes a box body 221 and a plurality of parallel rotating components 222. Each rotating component 222 can be rotatably connected to the box body 221. Each rotating component 222 includes a detection component, a regulating valve 2225 and at least two cold plate bodies 2226 with heat sources connected in series. Each rotating component 222 is used to rotate relative to the box body 221 so that the corresponding cold plate body 2226 rotates to a target angle. The detection component is used to detect the performance data of the refrigerant when the corresponding cold plate body 2226 rotates to the target angle. The regulating valve 2225 is used to regulate the refrigerant flow rate of the cold plate branch where the corresponding cold plate body 2226 is located.

[0066] Specifically, the second circulating water pump 21 is responsible for transporting the refrigerant condensed by the heat exchanger 13 from the refrigerant pipe 132 of the heat exchanger 13 to the cold plate module 22, and enables the refrigerant after heat exchange in the cold plate module 22 to return to the refrigerant pipe 132 of the heat exchanger 13 to be condensed again, forming a closed-loop circulation system. When measuring, the power consumption of the cold plate heat source is first set, and the performance data of the corresponding cold plate branch is detected by the detection component on the corresponding cold plate branch, and the flow distribution of each cold plate branch is automatically adjusted by the regulating valve 2225.

[0067] At the same time, considering that the cold plate body 2226 is at different installation angles, the gas phase has a small density and is concentrated in the upper part, while the liquid phase has a large density and is concentrated in the lower part, which affects the contact between the two-phase flow state and the heat source at the bottom of the cold plate body 2226, and further affects the phase change heat and internal pressure oscillation. Therefore, the present invention sets the component where the cold plate body 2226 is located as a rotating component 222, so that the angle of the cold plate body 2226 required for the test can be adjusted as needed during the test. Each rotating component 222 includes a detection component, a regulating valve 2225 and at least two cold plate bodies 2226 with heat sources connected in series. Each rotating component 222 is used to rotate relative to the box 221 so that the corresponding cold plate body 2226 rotates to the target angle. During the test, the cold plate angle required for the test can be adjusted, and the rotating component 222 of a single branch or up to four branches can be fixed at any angle, thereby meeting the performance test of the cold plate circulation system 20 at different cold plate angles.

[0068] Among them, the so-called performance test mainly includes heat dissipation performance test and pressure oscillation characteristics (pressure oscillation characteristics involve the dynamic response of the system, including pressure fluctuations and stability problems that may occur during the flow of refrigerant).

[0069] In addition, the cold plate circulation system 20 also includes a liquid storage tank 14. The liquid storage tank 14 in the cold plate circulation system 20 is used to store refrigerant to ensure that the cold plate circulation system 20 has sufficient refrigerant to circulate under different load conditions; a drying filter 24 is provided between the second circulating water pump 21 and the cold plate module 22, and sight glasses 25 are provided between the drying filter 24 and the cold plate module 22, as well as on both sides of the refrigerant pipe 132 of the heat exchanger 13.

[0070] The data acquisition module 30 is connected to the detection component for communication, and is used to collect refrigerant performance data detected by the detection component.

[0071] Of course, according to actual test needs, the detection components mainly include a flow sensor 2222 , a temperature sensor 2223 and a pressure sensor 2224 .

[0072] That is to say, the data acquisition module 30 is communicatively connected with the flow sensor 2222 , the temperature sensor 2223 and the pressure sensor 2224 , and is used to collect the flow data detected by the flow sensor 2222 , the temperature data detected by the temperature sensor 2223 and the pressure data detected by the pressure sensor 2224 .

[0073] In this way, after adjusting the test scenario, when the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223 and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the heat dissipation performance under different power consumption and different cold plate angles and the pressure oscillation of the system measuring points are recorded in real time.

[0074] Take the cold plate module 22 as an example in which four parallel rotating components 222 are provided:

[0075] For example, a single cold plate test is performed: the cold water unit 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20 are turned on, and the regulating valves 2225 in any three of the four parallel rotating components 222, as well as the heat sources corresponding to the remaining cold plate bodies 2226 in the remaining rotating component 222 are turned off, and only the heat source corresponding to one cold plate body 2226 is kept in a working state, and then the rotating component 222 to be tested is controlled to rotate so that the cold plate body 2226 of the rotating component 222 to be tested is adjusted to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223, and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time, so as to complete the heat dissipation performance of the cold plate circulation system 20 under different power consumption and the pressure oscillation test of the system measuring point.

[0076] For another example, a series cold plate test is performed: the cold water unit 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20 are turned on, and the regulating valves 2225 in any three of the four parallel rotating components 222 are closed, and only the heat sources corresponding to at least two cold plate bodies 2226 in one rotating component 222 are kept in a working state, and then the rotating component 222 to be tested is controlled to rotate so that the cold plate body 2226 of the rotating component 222 to be tested is adjusted to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223, and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time, so as to complete the heat dissipation performance of the cold plate circulation system 20 and the pressure oscillation test of the system measuring point under different power consumption.

[0077] For another example, a series-parallel coupled cold plate test is performed: the cold water unit 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20 are turned on, all regulating valves 2225 in the four parallel rotating components 222 inside the test device are turned on, and the heat sources corresponding to all cold plate bodies 2226 of the four parallel rotating components 222 are kept in working state, and then each rotating component 222 to be tested is controlled to rotate so that the cold plate body 2226 of the rotating component 222 to be tested is adjusted to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223, and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time, so as to complete the heat dissipation performance of the cold plate circulation system 20 and the pressure oscillation test of the system measuring point under different power consumption.

[0078] The beneficial effects of the liquid cooling device arranged in this way mainly include:

[0079] The liquid cooling device provided by the present invention is suitable for performance testing of a series-parallel combined high-power consumption two-phase cold plate liquid cooling system (mainly including heat dissipation performance testing and pressure oscillation characteristic testing), especially considering that the cold plate body 2226 is at different installation angles, and the gas phase is concentrated in the upper part due to its small density, and the liquid phase is concentrated in the lower part due to its large density, which affects the contact between the two-phase flow state and the heat source at the bottom of the cold plate body 2226, and further affects the phase change heat transfer and internal pressure oscillation. Therefore, the present invention sets the component where the cold plate body 2226 is located as a rotating component 222, so that during the test, the angle of the cold plate body 2226 required for the test can be adjusted as needed. It is not only suitable for the scenario where the cold plate body 2226 is installed horizontally, but also suitable for the scenario where the cold plate body 2226 is installed at any angle. The test scenarios involved include but are not limited to single cold plate performance testing, series testing of two cold plates, series-parallel coupling testing of four branches, etc.

[0080] The above setting method can be used to test the boundaries of the cold plate heat dissipation performance of the liquid cooling device in different test scenarios, and can also test the pressure oscillation characteristics under different scenarios, thereby guiding the design of the server cooling system. At the same time, the flow rate can be dynamically allocated according to the flow requirements of different branches to eliminate the heat dissipation risk.

[0081] In addition, the above-mentioned liquid cooling device can also be directly applied to server products, such as OAM (open acceleration module) form GPU (corresponding to the horizontally arranged cold plate body 2226 state) and PCIe (universal computer bus interface) card form GPU (corresponding to the vertically arranged cold plate body 2226 state).

[0082] Please refer to Figures 4, 5 and 6 together. A first installation cavity 2211 and a second installation cavity 2212 are provided in the box body 221. The second installation cavity 2212 is separated from the first installation cavity 2211, and the volume of the first installation cavity 2211 is larger than the volume of the second installation cavity 2212. Each rotating component 222 can be rotatably arranged in the first installation cavity 2211, and the rotation axes of each rotating component 222 are parallel to each other. The cold plate module 22 also includes a plurality of liquid phase quick connectors 223 and a plurality of gas phase quick connectors 224. The rotating component 222 and the corresponding liquid phase quick connectors 223 and the corresponding gas phase quick connectors 224 form a cold plate branch. Each liquid phase quick connector 223 and each gas phase quick connector 224 are all arranged in the second installation cavity 2212.

[0083] In this way, the refrigerant condensed by the radiator is transported from the refrigerant pipe 132 of the heat exchanger 13 to each cold plate branch, and the refrigerant enters the cold plate body 2226 in the corresponding cold plate branch from the liquid phase quick connector 223 on each cold plate branch to cool the heat source, and then flows out of the corresponding cold plate branch from the gas phase quick connector 224 in the corresponding cold plate branch and flows back to the refrigerant pipe 132 of the heat exchanger 13, thereby forming a liquid cooling cycle.

[0084] In addition, a liquid inlet pipeline 225 and an air outlet pipeline 226 are provided in the second installation cavity 2212. The liquid inlet pipeline 225 and the air outlet pipeline 226 are arranged on the same inner wall of the box body 221, and the liquid inlet pipeline 225 is located above the air outlet pipeline 226. Each liquid phase quick connector 223 is connected to the liquid inlet pipeline 225, and each gas phase quick connector 224 is connected to the air outlet pipeline 226.

[0085] It can be seen that one end of each cold plate branch is connected to the liquid inlet pipe 225 through the corresponding liquid phase quick connector 223, and the liquid inlet pipe 225 is used to distribute the condensed refrigerant to the corresponding cold plate branch. The other end of each cold plate branch is connected to the gas outlet pipe 226 through the corresponding gas phase quick connector 224. The refrigerant formed after heat exchange is converged into the main circuit of the cold plate circulation system 20 through the gas outlet pipe 226 and returns to the refrigerant pipe 132 of the heat exchanger 13.

[0086] To facilitate the rotation of each rotating component 222, each rotating component 222 also includes a rotating bracket 2221. The rotating bracket 2221 is U-shaped, and the two ends of the rotating bracket 2221 are respectively rotatably connected to the inner walls on both sides of the first installation cavity 2211. The rotating bracket 2221 is used to install the flow sensor 2222, temperature sensor 2223, pressure sensor 2224, regulating valve 2225 and at least two cold plate bodies 2226 with heat sources connected in series on the corresponding cold plate branch (preferably two cold plate bodies 2226 with heat sources connected in series are arranged).

[0087] In this way, by rotating and adjusting the rotating bracket 2221, the angle of the cold plate body 2226 required for the test can be adjusted as needed during the test. Each rotating bracket 2221 is provided with a flow sensor 2222, a temperature sensor 2223, a pressure sensor 2224, a regulating valve 2225 and two cold plate bodies 2226 with heat sources connected in series. During the test, the cold plate angle required for the test can be adjusted, and a single branch or a rotating component 222 of up to four branches can be fixed at any angle, thereby satisfying the heat dissipation performance test and pressure shock characteristics of the cold plate circulation system 20 at different cold plate angles.

[0088] To facilitate installation of the cold plate body 2226 , the rotating bracket 2221 is provided with a receiving groove 22211 for receiving the cold plate body 2226 . The depth of the receiving groove 22211 is greater than or equal to the thickness of the cold plate body 2226 , and the width of the receiving groove 22211 is equal to the width of the cold plate body 2226 .

[0089] In order to facilitate the fixing of the rotating bracket 2221 after adjusting the angle, the box body 221 is provided with a plurality of fixing holes 2213, and the fixing holes 2213 correspond to the rotating bracket 2221 one by one. Correspondingly, the cold plate module 22 also includes a plurality of fasteners 23, and the fasteners 23 cooperate with the corresponding fixing holes 2213 to fix the positions of the corresponding rotating bracket 2221 and the box body 221. Of course, the fasteners 23 can be fastening screws.

[0090] It should be noted that, according to the requirements of the test scenario, the rotating component 222 of a single branch or up to four branches can be fixed at any angle. The rotation function is mainly realized by the U-shaped rotating bracket 2221. The outer side of the rotating bracket 2221 is connected with a freely rotatable quick connector and a hose. When rotation is required, the rotating bracket 2221 can be rotated to absorb the angular displacement through the freely rotatable quick connector and the hose. When the target angle is reached, the rotating component 222 is locked by hand-tightening the screws.

[0091] Please refer to FIG. 4 , the four cold plate branches in the cold plate module 22 are all in a horizontal position, or in other words, each cold plate branch is in a 0° horizontal position.

[0092] Please refer to FIG. 5 , one of the four cold plate branches of the cold plate module 22 is in a 90° vertical position, and the other three cold plate branches are in a 0° horizontal position.

[0093] Please refer to FIG. 6 , one of the four cold plate branches of the cold plate module 22 is in a 180° position state, and the other three cold plate branches are in a 0° horizontal position state.

[0094] In some embodiments, the number of cold plate bodies 2226 on any cold plate branch is two, the number of flow sensors 2222 is one, the number of pressure sensors 2224 is four, and the number of temperature sensors 2223 is three. Among them, a flow sensor 2222 and a pressure sensor 2224 are provided between the liquid phase quick connector 223 and the regulating valve 2225, and a pressure sensor 2224 and a temperature sensor 2223 are provided between the two cold plate bodies 2226, between the regulating valve 2225 and one (the side close to the regulating valve 2225) cold plate body 2226, and between the gas phase quick connector 224 and the other (the side away from the regulating valve 2225) cold plate body 2226.

[0095] With such a setting, the power consumption of the heat source corresponding to the cold plate body 2226 is first set during measurement, and the heat dissipation performance and pressure oscillation characteristics of the dual-phase cold plate liquid cooling system are measured through the three temperature sensors 2223 and four pressure sensors 2224 on the branch where the heat source is located, and the flow distribution of each cold plate branch is automatically adjusted through the regulating valve 2225.

[0096] To this end, please refer to Figure 7. The liquid cooling device also includes a control module 40, which is communicatively connected to the data acquisition module 30, the first circulating water pump 12, the second circulating water pump 21, the regulating valve 2225 and each heat source. The control module 40 is used to control the opening and closing of the first circulating water pump 12, the second circulating water pump 21, each regulating valve 2225 and each heat source to switch different test scenarios, and is used to control the opening of each regulating valve 2225 in the same test scenario according to the data collected by the data acquisition module 30 to adjust the refrigerant flow of the cold plate branch where the corresponding regulating valve 2225 is located.

[0097] Among them, the control module 40 is used to receive the flow data, temperature data and pressure data of the corresponding cold plate branch collected by the data acquisition module 30, and to determine whether the flow data, temperature data and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state, and the control module 40 is also used to determine the corresponding driving control signal for adjusting the regulating valve 2225 when the flow data, temperature data and pressure data of the corresponding cold plate branch do not respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state, so as to control the opening of the corresponding regulating valve 2225, so that the flow data, temperature data and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state.

[0098] In this embodiment, please also refer to FIG. 8 , the control module 40 includes a receiving unit 41 , a determining unit 42 and a control unit 43 . Among them, the receiving unit 41 is used to receive the flow data, temperature data and pressure data of the corresponding cold plate branch collected by the data acquisition module 30; the judgment unit 42 is communicatively connected to the receiving unit 41, and the judgment unit 42 is used to judge whether the flow data, temperature data and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state; the control unit 43 is communicatively connected to the judgment unit 42, and the control unit 43 is used to determine the corresponding driving control signal for adjusting the regulating valve 2225 when the flow data, temperature data and pressure data of the corresponding cold plate branch do not respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state, so as to control the opening of the corresponding regulating valve 2225, so that the flow data, temperature data and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state.

[0099] It should be emphasized that when the judgment unit 42 determines that the flow data, temperature data and pressure data of the corresponding cold plate branch do not reach the flow data, temperature data and pressure data of the corresponding cold plate branch respectively required when the cold plate circulation system 20 is in a stable state; the control unit 43 can calculate the flow data difference, temperature data difference and pressure data difference that still need to be adjusted, and determine the corresponding driving control signal for adjusting the regulating valve 2225 to control the opening of the corresponding regulating valve 2225, so that the flow data, temperature data and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state.

[0100] In some embodiments, the liquid cooling device also includes a data recording module 50, which is communicatively connected to the data acquisition module 30 and the control module 40. The data recording module 50 is used to record the flow data, temperature data and pressure data of each cold plate branch when the cold plate circulation system 20 is in a stable state, and transmit it to the control module 40.

[0101] That is to say, the data recording module 50 records the flow data, temperature data and pressure data of each cold plate branch when the cold plate circulation system 20 is in a stable state, so that the control module 40 adjusts the opening of the corresponding regulating valve 2225 according to the data recorded by the data recording module 50, so as to distribute the flow of refrigerant to each corresponding cold plate branch. In this way, the flow can be dynamically allocated according to the flow requirements of different cold plate branches to eliminate the risk of heat dissipation.

[0102] In some embodiments, the liquid cooling device also includes a prompt module 60, which is communicatively connected to the control module 40. The prompt module 60 is used to provide text or sound prompts when the flow data, temperature data, and pressure data of the corresponding cold plate branch respectively reach the flow data, temperature data, and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state.

[0103] Of course, according to actual needs, the prompt module 60 can be a voice announcer. When the flow data, temperature data and pressure data of the corresponding cold plate branch reach the flow data, temperature data and pressure data of the corresponding cold plate branch required when the cold plate circulation system 20 is in a stable state, the voice announcer can make a voice announcement, thereby prompting the on-site tester of the current status of the system.

[0104] Of course, according to the safety requirements of the actual test, in order to ensure that there is no leakage during the test, thereby preventing the leakage from affecting the normal operation of the working parts in the two-phase liquid cooling system, a leakage-proof structure can be further provided in the cold plate module 22.

[0105] In some embodiments, the anti-leakage structure may include a sealed accommodating groove disposed at the bottom of the rotating bracket 2221, that is, the accommodating groove 22211 disposed at the bottom of the rotating bracket 2221 in the above embodiment and used to accommodate the cold plate body 2226 is set as a sealed accommodating groove. In this way, the sealed accommodating groove can not only accommodate the cold plate body 2226, but also accommodate the cold plate body 2226 in a relatively sealed groove body.

[0106] It is understandable that, as the rotation angle of the rotating bracket 2221 is adjusted, when the rotating bracket 2221 is rotated to a 90° vertical or 180° horizontal position, if the cold plate body 2226 and the pipe connection thereon leak, the leak will be affected by gravity and drip into the box 221 of the cold plate module 22, so as to cause a subsequent safety accident caused by the leakage. For this reason, a sealing accommodating groove is provided at the bottom of each rotating bracket 2221, so that the corresponding cold plate body 2226 and the connection thereon with the pipe are accommodated in the sealing accommodating groove, so that even if the cold plate body 2226 and the pipe connection thereon leak, the leak will only be retained in the sealing accommodating groove as the rotating bracket 2221 rotates, and will not leak out.

[0107] Furthermore, a leakage storage structure or a leakage collection structure for accommodating leaked liquid may also be provided below the rotating bracket 2221. For example, a liquid storage tank may be provided below the rotating bracket 2221. For another example, a liquid collecting rack may be provided below the rotating bracket 2221. The liquid storage tank or the liquid collecting rack may be provided at the bottom of the box body 221 of the cold plate module 22. The liquid storage tank or the liquid collecting rack is connected to the sealed containing tank so that when the leakage in the sealed containing tank reaches a threshold value, the leaked liquid can be extracted and accommodated in the liquid storage tank or the liquid collecting rack.

[0108] In this way, by setting up a liquid storage tank or a liquid collecting rack under the rotating bracket 2221, possible leakage can be effectively collected to prevent liquid from leaking to the outside of the equipment and reduce the impact on the surrounding environment. At the same time, the liquid storage tank or the liquid collecting rack is connected to the sealed container tank, which can conveniently monitor the leakage, and perform maintenance and cleaning in time to ensure the normal operation of the equipment. By collecting the leakage in time, the risk of operators coming into contact with harmful liquids is reduced, and the safety of the working environment is improved. This can solve the problem of corrosion or damage to the equipment caused by untimely handling of leakage.

[0109] Please refer to FIG. 9 , a method for testing a liquid cooling device provided by the present invention is used to test the liquid cooling device described in the above specific embodiment. The method for testing the liquid cooling device includes:

[0110] S1: Control the regulating valve 2225 of the rotating component 222 to be tested in the cold water circulation system 10 and the cold plate circulation system 20 and the corresponding heat source to be opened;

[0111] S2: Control the rotation component 222 to be tested to rotate so that the cold plate body 2226 of the rotation component 222 to be tested is adjusted to a target angle;

[0112] S3: After the cold plate circulation system 20 is in a stable state, the detection component of the rotating component 222 to be tested is controlled to be turned on, and the refrigerant performance data detected by the detection component is collected through the data collection module 30.

[0113] The liquid cooling device and the testing method of the liquid cooling device according to the present invention may include the following test scenarios, and different test scenarios may be switched automatically or manually:

[0114] Test scenario 1: Single cold plate test

[0115] Turn on the chiller 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20, close the regulating valves 2225 in any three of the four parallel rotating components 222, and the heat source corresponding to any cold plate body 2226 in the remaining rotating component 222, and only keep the heat source corresponding to one cold plate body 2226 in the working state, and then adjust the rotating component 222 to be tested to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223, and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time to complete the heat dissipation performance of the cold plate circulation system 20 under different power consumption and the pressure oscillation test of the system measuring point.

[0116] Test scenario 2: Series cold plate test

[0117] Turn on the chiller 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20, close the regulating valves 2225 in any three of the four parallel rotating components 222, and only keep the heat sources corresponding to the two cold plate bodies 2226 in one rotating component 222 in working state, and then adjust the rotating component 222 to be tested to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223, and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time to complete the heat dissipation performance of the cold plate circulation system 20 under different power consumption and the pressure oscillation test of the system measuring points.

[0118] Test scenario three: series-parallel coupled cold plate test

[0119] Turn on the chiller 11 and the first circulating water pump 12 of the cold water circulation system 10, and the second circulating water pump 21 of the cold plate circulation system 20, turn on all the regulating valves 2225 in the four parallel rotating components 222 inside the test device, keep the heat sources corresponding to all the cold plate bodies 2226 in the four parallel rotating components 222 in working state, and then adjust each rotating component 222 to be tested to the corresponding target angle. When the system reaches a stable state, the flow data detected by the flow sensor 2222, the temperature data detected by the temperature sensor 2223 and the pressure data detected by the pressure sensor 2224 are collected through the data acquisition module 30, and the performance data of each refrigerant is recorded in real time to complete the heat dissipation performance of the cold plate circulation system 20 under different power consumption and the pressure oscillation test of the system measuring points.

[0120] The liquid cooling device and the testing method of the liquid cooling device provided by the present invention are suitable for testing the heat dissipation performance and pressure oscillation characteristics of a series-parallel combined high-power consumption two-phase cold plate liquid cooling system, especially considering that the cold plate body 2226 is at different installation angles, and the gas phase density is small and gathered in the upper part, and the liquid phase density is large and concentrated in the lower part, which affects the contact between the two-phase flow state and the heat source at the bottom of the cold plate body 2226, and further affects the phase change heat transfer and internal pressure oscillation. Therefore, the present invention sets the component where the cold plate body 2226 is located as a rotating component 222, so that during the test, the angle of the cold plate body 2226 required for the test can be adjusted as needed. It is not only suitable for the scenario where the cold plate body 2226 is installed horizontally, but also suitable for the scenario where the cold plate body 2226 is installed at any angle. The test scenarios involved include but are not limited to single cold plate performance testing, series testing of two cold plates, series-parallel coupling testing of four branches, etc.

[0121] The above setting method can be used to test the boundaries of the cold plate heat dissipation performance of the liquid cooling device in different test scenarios, and can also test the pressure oscillation characteristics in different scenarios, thereby guiding the design of the server heat dissipation system, and dynamically allocating the flow according to the flow requirements of different branches to eliminate the heat dissipation risk. In addition, the above liquid cooling device and the test method of the liquid cooling device can also be directly applied to server products, such as OAM (open acceleration module) form GPU (corresponding to the horizontally arranged cold plate body 2226 state) and PCIe (universal computer bus interface) card form GPU (corresponding to the vertically arranged cold plate body 2226 state).

[0122] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0123] The above is a detailed introduction to the liquid cooling device and the testing method of the liquid cooling device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the scheme of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A liquid cooling device, characterized in that: It includes a cold water circulation system and a cold plate circulation system, wherein the cold water circulation system forms a heat exchange connection with the cold plate circulation system through a heat exchanger to cool the refrigerant in the cold plate circulation system; The cold plate circulation system comprises a cold plate module, the cold plate module comprises a box body and a plurality of parallel rotating components, each of the rotating components can be rotatably connected to the box body, each of the rotating components comprises a detection component, a regulating valve and at least two cold plate bodies with heat sources connected in series, each of the rotating components is used to rotate relative to the box body so that the corresponding cold plate body rotates to a target angle, the detection component is used to detect the performance data of the refrigerant when the corresponding cold plate body rotates to the target angle, and the regulating valve is used to regulate the refrigerant flow of the corresponding cold plate body; The liquid cooling device further comprises a data acquisition module, the data acquisition module is communicatively connected with the detection component, and the data acquisition module is used to collect refrigerant performance data detected by the detection component; A first installation cavity is provided in the box body, and each of the rotating components can be rotatably arranged in the first installation cavity, and the rotation axes of each of the rotating components are parallel to each other; The cold plate module further includes a plurality of liquid phase quick connectors and a plurality of gas phase quick connectors, the rotating assembly is connected with the corresponding liquid phase quick connectors and the gas phase quick connectors to form a cold plate branch, and a second installation cavity is further provided in the box body, the second installation cavity is separated from the first installation cavity, and each of the liquid phase quick connectors and each of the gas phase quick connectors are provided in the second installation cavity; Each of the rotating components also includes a rotating bracket, which is U-shaped. The two ends of the rotating bracket are rotatably connected to the inner walls on both sides of the first mounting cavity, and the rotating bracket is used to install the detection component, the regulating valve and at least two cold plate bodies connected in series with the heat source on the corresponding cold plate branch.

2. The liquid cooling device according to claim 1, characterized in that: A liquid inlet pipeline and an air outlet pipeline are provided in the second installation cavity. The liquid inlet pipeline and the air outlet pipeline are arranged on the same inner wall of the box body, and the liquid inlet pipeline is located above the air outlet pipeline. Each of the liquid phase quick connectors is connected to the liquid inlet pipeline, and each of the gas phase quick connectors is connected to the air outlet pipeline.

3. The liquid cooling device according to claim 1, characterized in that: The rotating bracket is provided with a receiving groove for receiving the cold plate body, the depth of the receiving groove is greater than or equal to the thickness of the cold plate body, and the width of the receiving groove is equal to the width of the cold plate body.

4. The liquid cooling device according to claim 1, characterized in that: The box body is provided with a plurality of fixing holes, and the fixing holes correspond to the rotating brackets one by one; The cold plate module further includes a plurality of fasteners, and the fasteners cooperate with the corresponding fixing holes to fix the positions of the corresponding rotating brackets and the box.

5. The liquid cooling device according to claim 1, characterized in that: The detection component includes a flow sensor, a temperature sensor and a pressure sensor, the number of the cold plate bodies on any cold plate branch is two, the number of the flow sensor is one, the number of the pressure sensors is four, and the number of the temperature sensors is three; Among them, the flow sensor and the pressure sensor are provided between the liquid phase quick connector and the regulating valve, and the pressure sensor and the temperature sensor are provided between the two cold plate bodies, between the regulating valve and one of the cold plate bodies, and between the gas phase quick connector and the other cold plate body.

6. The liquid cooling device according to claim 1, characterized in that: The liquid cooling device also includes a control module, which is communicatively connected with the data acquisition module, the cold water circulation system, each of the regulating valves in the cold plate circulation system, and each of the heat sources. The control module is used to control the opening and closing of the cold water circulation system, each of the regulating valves in the cold plate circulation system, and each of the heat sources to switch different test scenarios, and is used to control the opening of each of the regulating valves in the same test scenario according to the data collected by the data acquisition module to adjust the refrigerant flow of the cold plate branch where the corresponding regulating valve is located.

7. The liquid cooling device according to claim 6, characterized in that: The control module is used to receive the refrigerant performance data of the corresponding cold plate branch collected by the data acquisition module, and to determine whether the refrigerant performance data of the corresponding cold plate branch reaches the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state, and to determine the corresponding driving control signal for adjusting the regulating valve when the refrigerant performance data of the corresponding cold plate branch does not reach the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state, so as to control the opening of the corresponding regulating valve, so that the refrigerant performance data of the corresponding cold plate branch reaches the corresponding refrigerant performance data of the cold plate branch required when the cold plate circulation system is in a stable state.

8. The liquid cooling device according to claim 7, characterized in that: The liquid cooling device also includes a data recording module, which is communicatively connected to the data acquisition module and the control module. The data recording module is used to record the refrigerant performance data of each cold plate branch when the cold plate circulation system is in a stable state, and transmit it to the control module.

9. The liquid cooling device according to claim 8, characterized in that: The liquid cooling device also includes a prompt module, which is communicatively connected to the control module, and is used to provide text or sound prompts when the refrigerant performance data of the corresponding cold plate branch reaches the refrigerant performance data of the corresponding cold plate branch required when the cold plate circulation system is in a stable state.

10. The liquid cooling device according to claim 1, characterized in that: The cold water circulation system includes a chiller and a first circulating water pump. The heat exchanger includes a cold water pipe connected to the cold water circulation system. The first circulating water pump is used to transport cold water from the chiller to the cold water pipe and return it to the chiller for further cooling.

11. The liquid cooling device according to claim 10, characterized in that: The cold plate circulation system also includes a second circulation water pump, and the heat exchanger also includes a refrigerant pipe, which is connected to the cold plate circulation system. The second circulation water pump is used to transport the refrigerant from the refrigerant pipe to the cold plate module and return to the refrigerant pipe for further cooling.

12. The liquid cooling device according to claim 11, characterized in that: The cold water circulation system and the cold plate circulation system both further include a liquid storage tank. The liquid storage tank in the cold water circulation system is used to store cold water to ensure that the cold water circulation system has water to circulate under different load conditions. The liquid storage tank in the cold plate circulation system is used to store refrigerant to ensure that the cold plate circulation system has refrigerant to circulate under different load conditions.

13. The liquid cooling device according to claim 11, characterized in that: A drying filter is provided between the second circulating water pump and the cold plate module, and sight glasses are provided between the drying filter and the cold plate module and on both sides of the refrigerant pipeline.

14. A method for testing a liquid cooling device, used for testing the liquid cooling device according to any one of claims 1 to 13, characterized in that: The testing method of the liquid cooling device comprises: Control the regulating valves of the rotating components to be tested in the cold water circulation system and the cold plate circulation system and open the corresponding heat sources; Controlling the rotating assembly to be tested to rotate so that the cold plate body of the rotating assembly to be tested is adjusted to a target angle; After the cold plate circulation system is in a stable state, the detection component of the rotating component to be tested is controlled to be turned on, and the refrigerant performance data detected by the detection component is collected through the data collection module.

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