CN118139366A - Immersed liquid cooling system and control method thereof - Google Patents
Immersed liquid cooling system and control method thereof Download PDFInfo
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- CN118139366A CN118139366A CN202410029021.XA CN202410029021A CN118139366A CN 118139366 A CN118139366 A CN 118139366A CN 202410029021 A CN202410029021 A CN 202410029021A CN 118139366 A CN118139366 A CN 118139366A
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- 239000007788 liquid Substances 0.000 title claims abstract description 403
- 238000001816 cooling Methods 0.000 title claims abstract description 159
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- 238000007654 immersion Methods 0.000 claims abstract description 77
- 239000000110 cooling liquid Substances 0.000 claims abstract description 72
- 238000003860 storage Methods 0.000 claims abstract description 66
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 17
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- 238000013461 design Methods 0.000 abstract description 18
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 description 16
- 230000002411 adverse Effects 0.000 description 9
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- 239000002480 mineral oil Substances 0.000 description 8
- 235000010446 mineral oil Nutrition 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000012809 cooling fluid Substances 0.000 description 6
- 239000011550 stock solution Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
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- 230000007613 environmental effect Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention relates to the technical field of electronic equipment cooling, in particular to an immersion liquid cooling system and a control method thereof. A liquid outlet is formed in the top end of the Tank in the system, the Tank is connected with one end of the heat exchange module, and a liquid inlet and a liquid outlet are formed in the bottom of the Tank; the top end of the liquid storage module is provided with a first port, the bottom end of the liquid storage module is provided with a second port and a third port, the liquid inlet of the Tank and the second port of the liquid storage module are both connected with one end of the circulating pump, and the liquid outlet of the Tank is connected with the other end of the circulating pump; the first port of the liquid storage module and the other end of the heat exchange module are connected with one end of the first bypass branch, and the third port of the liquid storage module and the second end of the circulating pump are connected with the other end of the first bypass branch. The communication type design of the system avoids the volatilization leakage condition of the fluoride liquid, ensures the safety of testers, and realizes the efficient and thorough discharge of the cooling liquid by controlling the running direction of the circulating pump and the opening and closing of the control valves arranged on all branches according to different liquid discharge demands through the control module.
Description
Technical Field
The invention relates to the technical field of electronic equipment cooling, in particular to an immersion liquid cooling system and a control method thereof.
Background
With the rapid development of technologies such as big data, cloud computing and artificial intelligence, the scale and load of a data center are continuously increased, so that the problem of energy consumption of the data center is increasingly outstanding. The traditional air cooling scheme has the technical problems of low heat dissipation efficiency and large consumption of energy sources when dealing with a high-density server, so that the requirements of a data center cannot be met more and more in terms of cooling capacity and economic feasibility. Therefore, the liquid cooling scheme becomes an important technical direction for data center construction due to the high heat dissipation efficiency, and the application proportion of the liquid cooling scheme in the server is gradually improved.
The liquid cooling scheme can be particularly divided into cold plate liquid cooling, immersion liquid cooling and spray liquid cooling. Wherein, the immersion liquid cooling means immersing heating equipment (servers, switches and the like) in insulating liquid, and taking out the heat of the equipment through an external circulation device. One type of closed Tank for storing insulating liquid and heat generating equipment in an immersion liquid cooling system is called a Tank. The immersed liquid cooling is divided into two types of single-phase immersed liquid cooling and phase-change immersed liquid cooling according to different cooling media, wherein the single-phase immersed liquid cooling is used for radiating heat simply by virtue of heat exchange between the cooling liquid and a heating device, so that the design of a single-phase immersed liquid cooling system is generally simpler, and the single-phase immersed liquid cooling system is widely applied in the industry at present.
Referring to fig. 1, the existing single-phase immersion liquid cooling system mainly adopts the following technical scheme: the liquid inlet and the liquid outlet of the cooling liquid are arranged at the lower part of the Tank, the liquid inlet and the liquid outlet are connected with a CDU (Coolant Distribution Unit, cooling medium distribution device) pipeline and a circulating pump, the circulating pump adopts a redundant configuration mode of 1 standby, during normal operation, liquid is discharged through overflow, the liquid outlet is arranged at the bottom of the Tank, the liquid outlet is arranged at the lowest end, and gravity liquid is used for discharging liquid.
The single-phase immersion medium (i.e. the cooling liquid) mainly comprises two kinds of mineral oil and fluoridation liquid, however, the existing single-phase immersion liquid cooling system still inevitably has the following technical problems:
1. Because the existing single-phase immersed liquid cooling system discharges liquid by means of gravity, the liquid discharging efficiency is low, mineral oil has the defects of high viscosity and difficult cleaning, and mineral oil in a CDU pipeline and a pump is difficult to discharge thoroughly during liquid discharging, so that adverse effects of mixing a plurality of cooling mediums are easy to generate when different cooling mediums are tested by the same Tank, and a Tank which only uses one cooling liquid in a single-phase immersed liquid cooling system appears, and the application space of the liquid cooling Tank is severely limited;
2. The fluorinated liquid is low in viscosity and good in heat dissipation performance, but is easy to volatilize, when a fluorinated liquid cooling medium is adopted, due to the design of an exhaust port in the existing single-phase immersed liquid cooling system, the fluorinated liquid volatilizes and leaks in the liquid injection/drainage process, so that resource waste is caused, environmental protection is not facilitated, and a large risk is generated for the safety of testers.
Disclosure of Invention
Aiming at the technical problems, the invention provides an immersion liquid cooling system and a control method thereof, and aims to design the whole immersion liquid cooling system in a communication mode, so that volatilization and leakage of fluorinated liquid are avoided to the greatest extent, safety of testers is guaranteed, and the discharge of cooling liquid is coordinated and distributed through a control module according to different liquid discharge requirements based on the design of the immersion liquid cooling system, so that the efficient and thorough discharge of the cooling liquid is realized.
Therefore, the invention adopts the following technical scheme: an immersed liquid cooling system comprises a Tank module, a liquid storage module, a circulating pump, a heat exchange module, a first bypass branch and a control module,
The Tank module is used for containing cooling liquid and heating equipment, a liquid outlet is formed in the top end of the Tank module, and a liquid inlet and a liquid outlet are formed in the bottom of the Tank module;
The top end of the liquid storage module is provided with a first port, the bottom end of the liquid storage module is provided with a second port and a third port, the liquid inlet of the Tank module and the second port of the liquid storage module are both connected with the first end of the circulating pump, and the liquid outlet of the Tank module is connected with the second end of the circulating pump;
The heat exchange module is used for cooling the cooling liquid, the input end of the heat exchange module is connected with the liquid outlet of the Tank module, the first port of the liquid storage module and the output end of the heat exchange module are both connected with one end of the first bypass branch, and the third port of the liquid storage module and the second end of the circulating pump are both connected with the other end of the first bypass branch;
And each branch of the immersed liquid cooling system is provided with a control valve, and the control module is used for controlling the circulating pump and all the switches of the control valves.
Where "branch" generally refers to a connection path between two devices for transmitting fluid, electrical signals, or other forms of energy or information in the system. In the engineering field, a branch is usually directed to one branch in a system, which can be used to control the flow direction of a fluid, increase the flexibility of the system, or enable connections between different devices.
According to the invention, through the communication design of the whole immersed liquid cooling system, the normal heat dissipation work, liquid injection work and liquid discharge work of the immersed liquid cooling system can be realized under the coordinated distribution of the control module by only adopting one circulating pump, so that the integration level and flexibility of the system are greatly improved, the system structure is simplified to a certain extent, the cost is reduced, meanwhile, the liquid injection/discharge process is sealed, the volatilization leakage condition of the fluorinated liquid is avoided to the greatest extent, the safety of testers is ensured, the discharge of the cooling liquid can be coordinated and distributed through the control module according to different liquid discharge requirements, the efficient and thorough discharge of the cooling liquid is realized, the adverse influence of the mixing of the cooling medium is avoided when a set of immersed liquid cooling system uses various cooling mediums such as mineral oil, fluorinated liquid and the like, the application space of the liquid cooling Tank is greatly expanded, and the practical value is higher.
Preferably, the immersion liquid cooling system comprises a liquid level sensor, wherein the liquid level sensor is used for monitoring the liquid level height of the cooling liquid in the Tank module, and the liquid level sensor is in communication connection with the control module.
Preferably, the immersion liquid cooling system comprises a second bypass branch, two ends of the second bypass branch are respectively connected with two ends of the pump, a control valve is arranged on the second bypass branch, and the control valve on the second bypass branch is connected with the control module.
Preferably, a filter is arranged on a branch between the liquid storage module and the Tank module.
The control method of the immersion liquid cooling system is realized by the immersion liquid cooling system, and comprises the following steps:
Acquiring a current required working mode of an immersion liquid cooling system, wherein the working mode comprises a normal heat radiation mode, a liquid injection mode, a liquid discharge mode and an ultra-clean liquid discharge mode;
And controlling the circulation pump and the opening and closing of all control valves based on the current required working mode of the immersed liquid cooling system.
Preferably, based on the current required working mode of the immersion liquid cooling system, the control of the circulation pump and the opening and closing of all control valves comprises:
if the current required working mode of the immersed liquid cooling system is a normal heat dissipation mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module, the first bypass branch, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are recorded as circulating heat dissipation pipelines;
and controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the circulating heat dissipation pipeline, and closing the rest control valves.
Preferably, based on the current required working mode of the immersion liquid cooling system, the control of the circulation pump and the opening and closing of all control valves comprises:
if the current required working mode of the immersed liquid cooling system is a liquid injection mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
The third port of the liquid storage module, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are connected through a connecting passage, and the connecting passage is recorded as a liquid supply pipeline;
And controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the pressure stabilizing pipeline and the liquid supply pipeline, and closing the rest control valves.
Preferably, based on the current required working mode of the immersion liquid cooling system, the control of the circulation pump and the opening and closing of all control valves comprises:
If the current required working mode of the immersed liquid cooling system is a liquid discharging mode, the method comprises the following steps:
the liquid outlet of the Tank module, the second end of the circulating pump, the first end of the circulating pump and the second port of the liquid storage module are marked as liquid outlet pipelines;
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
And controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the liquid discharge pipeline and the pressure stabilizing pipeline, and closing the rest control valves.
Preferably, after the "control the opening of the circulation pump and the operation direction is clockwise, and control the opening of the control valve on each branch in the liquid discharge pipeline and the pressure stabilizing pipeline, and the closing of the remaining control valves", the method further comprises:
And monitoring the liquid level of the cooling liquid in the Tank module in real time, when the liquid level of the cooling liquid in the Tank module is smaller than a preset threshold value, maintaining a liquid discharge mode, controlling a control valve on a branch path between a liquid discharge port of the Tank module and a second end of the circulating pump to be closed for a preset period of time, and then controlling the control valve on the branch path between the liquid discharge port of the Tank module and the second end of the circulating pump to be opened.
Preferably, based on the current required working mode of the immersion liquid cooling system, the control of the circulation pump and the opening and closing of all control valves comprises:
if the current required working mode of the immersed liquid cooling system is an ultra-clean liquid discharging mode, the method comprises the following steps:
The second port of the liquid storage module, the first end of the circulating pump, the second end of the circulating pump and the connecting passage between the first port of the liquid storage module are marked as ultra-clean liquid discharge pipelines;
and monitoring whether cooling liquid exists in the Tank module, and when the cooling liquid does not exist in the Tank module, controlling the opening of the circulating pump, the operation direction of the circulating pump to be clockwise, and controlling the control valves on all branches in the ultra-clean liquid discharge pipeline to be opened and the rest control valves to be closed.
The beneficial technical effects of the invention at least comprise: by adopting the immersion liquid cooling system and the control method thereof, the normal heat dissipation work, liquid injection work and liquid discharge work of the immersion liquid cooling system can be realized under the coordination and distribution of the control module by adopting the communicated design of the whole immersion liquid cooling system, the integration level and flexibility of the system are greatly improved, the system structure is simplified to a certain extent, the cost is reduced, the liquid injection/discharge process is performed in a sealed way, the volatilization and leakage condition of the fluorinated liquid is avoided to the greatest extent, the safety of testers is ensured, and the discharge of the cooling liquid can be coordinated and distributed through the control module based on the communicated design of the whole immersion liquid cooling system according to different liquid discharge requirements, so that the efficient and thorough discharge of the cooling liquid is realized, the adverse influence of the mixing of the cooling medium is avoided when a set of immersion liquid cooling system uses various cooling mediums such as mineral oil, the fluorinated liquid and the like, the application space of the liquid cooling Tank is greatly expanded, and the practical value is higher.
Other features and advantages of the present invention will be disclosed in the following detailed description of the invention and the accompanying drawings.
Drawings
The invention is further described with reference to the accompanying drawings:
Fig. 1 is a schematic structural diagram of a conventional single-phase immersion liquid cooling system.
Fig. 2 is a schematic structural diagram of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 4 is a flowchart of a control method of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a normal heat dissipation mode of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a liquid discharge mode of an immersion liquid cooling system according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of an ultra-clean liquid discharge mode of an immersion liquid cooling system according to an embodiment of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
In the following description, directional or positional relationships such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are presented for convenience in describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The embodiment of the application provides an immersion liquid cooling system, referring to fig. 2, which comprises a Tank module, a liquid storage module, a circulating pump, a heat exchange module, a first bypass branch and a control module,
The Tank module is used for containing cooling liquid and heating equipment, a liquid outlet is formed in the top end of the Tank module, and a liquid inlet and a liquid outlet are formed in the bottom of the Tank module;
The top end of the liquid storage module is provided with a first port, the bottom end of the liquid storage module is provided with a second port and a third port, the liquid inlet of the Tank module and the second port of the liquid storage module are both connected with the first end of the circulating pump, and the liquid outlet of the Tank module is connected with the second end of the circulating pump;
The heat exchange module is used for cooling the cooling liquid, the input end of the heat exchange module is connected with the liquid outlet of the Tank module, the first port of the liquid storage module and the output end of the heat exchange module are both connected with one end of the first bypass branch, and the third port of the liquid storage module and the second end of the circulating pump are both connected with the other end of the first bypass branch;
Each branch of the immersion liquid cooling system is provided with a control valve (shown as a valve 1-a valve 8) and the control module (not shown) is used for controlling the circulation pump and the opening and closing of all the control valves.
Where "branch" generally refers to a connection path between two devices for transmitting fluid, electrical signals, or other forms of energy or information in the system. In the engineering field, a branch is usually directed to one branch in a system, which can be used to control the flow direction of a fluid, increase the flexibility of the system, or enable connections between different devices. Illustratively, the connection path between the liquid inlet of the Tank module and the first end of the circulation pump in this embodiment is a branch.
In this embodiment, the Tank module is configured to accommodate a cooling fluid and a heat generating device, and the heat generating device is at least partially immersed in the cooling fluid (the heat generating device is not shown). It will be appreciated that the coolant stored in the Tank module may evaporate water in the coolant during the continuous heat dissipation operation, thereby causing a drop in the liquid level, or the components in the coolant may be affected by oxidation and reduced, so that both the coolant and air may be present in the Tank module. Therefore, a liquid outlet (i.e. the connection port between the branch where the valve 5 is located and the Tank module in the figure) is arranged at the top end of the Tank module, so that the cooling liquid can be conveyed, and the air can be conveyed, and a liquid inlet (i.e. the connection port between the branch where the valve 7 is located and the Tank module in the figure) and a liquid outlet (i.e. the connection port between the branch where the valve 6 is located and the Tank module in the figure) are arranged at the bottom of the Tank module.
The reservoir module includes, but is not limited to, a reservoir. The liquid storage module stores cooling liquid and certain air exists at the top end, so that a first port (namely, a connection port between a branch where a valve 4 is located and the liquid storage module in the figure) is arranged at the top end of the liquid storage module, a second port (namely, a connection port between a branch where a valve 1 is located and the liquid storage module in the figure) and a third port (namely, a connection port between a branch where a valve 3 is located and the liquid storage module in the figure) are arranged at the bottom end of the liquid storage module, each port of the liquid storage module is provided with a control valve (namely, a valve 1, a valve 3 and a valve 4 in the figure) as a basis for subsequent liquid injection and liquid discharge work, and it can be understood that the liquid storage module can be externally connected with different cooling media and is externally connected with different liquid storage modules.
The circulating pump is used for providing enough fluid power in the immersion liquid cooling system so as to ensure that the cooling liquid can effectively flow in the connecting passage, and it can be understood that the operation direction of the circulating pump in the working mode of the immersion liquid cooling system provided by the embodiment is clockwise, and the control system is mainly used for controlling the opening and closing of the circulating pump. The liquid inlet of the Tank module and the second port of the liquid storage module are both connected with the first end of the circulating pump, and the liquid outlet of the Tank module is connected with the second end of the circulating pump.
The heat exchange module is used for cooling the cooling liquid flowing through the heat exchange module by using an external cooling loop (not shown in the figure), namely the cooled cooling liquid is output by the output end of the heat exchange module. Heat exchange modules include, but are not limited to, plate heat exchangers. The input of heat transfer module is connected with the liquid outlet of Tank module, the first port of stock solution module and the output of heat transfer module are all connected with the one end of first bypass branch road (i.e. the branch road that valve 8 in the figure is located), the third port of stock solution module and the second end of circulating pump all are connected with the other end of first bypass branch road, concretely speaking, there is the intercommunication branch road between the first port of stock solution module and the output of heat transfer module, there is the intercommunication branch road between the third port of stock solution module and the output of heat transfer module, be provided with first bypass branch road between the first port of stock solution module and the third port, the third port of stock solution module and the link of first bypass branch road are connected with the second end of circulating pump (i.e. the branch road that valve 2 in the figure is located).
The control valve arranged on each branch of the immersion liquid cooling system can be an electromagnetic valve, a butterfly valve or the like, and the embodiment is not limited to the above. The control module is used for controlling the opening or closing of the related control valve based on the current required working mode one-time key of the immersion liquid cooling system.
According to the embodiment, through the communication design of the whole immersed liquid cooling system, the normal heat dissipation work, the liquid injection work and the liquid discharge work of the immersed liquid cooling system can be realized under the coordinated distribution of the control module by only adopting one circulating pump in the whole immersed liquid cooling system, the integration level and the flexibility of the system are greatly improved, the system structure is simplified to a certain extent, the cost is reduced, meanwhile, the liquid injection/discharge process is performed in a sealing way, the air in the cooling liquid in the Tank module is transferred and output by utilizing the communication design of the whole immersed liquid cooling system while an exhaust port is not designed, the volatilization and leakage condition of the fluoride liquid is avoided to the greatest extent, the safety of testers is ensured, the discharge of the cooling liquid can be coordinated and distributed through the control module according to different liquid discharge requirements, the efficient and thorough discharge of the cooling liquid is realized, the adverse effects on the reliability and the performance of the cooling medium due to the mixing of the cooling medium when the set of the immersed liquid cooling system is applied to various cooling mediums such as mineral oil, the fluoride liquid and the like are avoided, the application space of the Tank is greatly expanded, and the practical value is high.
In one embodiment of the present disclosure, the immersion liquid cooling system includes a liquid level sensor, where the liquid level sensor is configured to monitor a liquid level of the cooling liquid in the Tank module, and the liquid level sensor is communicatively connected to the control module, so that the control module is linked with the liquid level sensor, and controls starting, switching, and stopping of each working mode of the immersion liquid cooling system.
In one embodiment of the present disclosure, referring to fig. 3, the immersion liquid cooling system includes a second bypass branch, two ends of the second bypass branch are respectively connected with two ends of the pump, a control valve (i.e. a valve 9 in the figure) is disposed on the second bypass branch, and the control valve on the second bypass branch is connected with the control module.
According to the embodiment, the control module is used for controlling the control valve on the second bypass branch, the adjustment of the flow rate of the liquid supply can be realized according to the actual heat dissipation requirement, specifically, when the flow rate of the cooling liquid is required to be adjusted, the control valve (namely the valve 9 in the figure) is opened, the control valve is closed in the rest time, and further, when the flow rate of the cooling liquid is required to be adjusted, the opening degree of the control valve (namely the valve 9 in the figure) is controlled to realize the more accurate adjustment of the flow rate of the liquid supply, and the control valve is closed in the rest time so as to maintain the stability and the reliability of the immersed liquid cooling system. Meanwhile, the heating equipment in the Tank module can be ensured to run in a safe heat dissipation temperature range by adjusting the flow of the liquid supply to a certain extent.
In one embodiment of the present disclosure, a filter is disposed in a branch between the reservoir module and the Tank module.
It will be appreciated that the filter serves to filter the coolant flowing through the branch, effectively removing suspended particles, impurities and other undesirable materials, ensuring cleanliness of the coolant circulating in the immersion liquid cooling system, thereby helping to protect heat exchange modules, circulation pumps and other critical components within the system and maintaining efficient operation of the system. In this embodiment, the specific position of the filter on the branch between the liquid storage module and the Tank module is not limited.
On the other hand, the embodiment of the application also provides a control method of the immersion liquid cooling system, which is realized by the immersion liquid cooling system, referring to fig. 4, and comprises the following steps:
step 402, obtaining a current required working mode of the immersion liquid cooling system, wherein the working mode comprises a normal heat dissipation mode, a liquid injection mode, a liquid discharge mode and an ultra-clean liquid discharge mode.
The implementation manner of obtaining the current required working mode of the immersion liquid cooling system is as follows: and installing a liquid level sensor, a temperature sensor, a pressure sensor and the like, detecting parameters such as the liquid level of the cooling liquid in the Tank module, the temperature and the pressure of the immersed liquid cooling system and the like through the sensors, setting the switching conditions of each working mode of the immersed liquid cooling system, and realizing the automatic monitoring and switching control of the working modes currently required by the system.
Step 404, controlling the circulation pump and the opening and closing of all control valves based on the current required working mode of the immersion liquid cooling system.
Specifically, the circulating pump and the related control valves are controlled to be opened or closed through one-step control of the control module based on the current required working mode of the immersion liquid cooling system.
According to the embodiment, on the basis of the communicated structural design of the immersed liquid cooling system, the normal heat dissipation work, the liquid injection work and the liquid discharge work of the immersed liquid cooling system are realized through the coordinated distribution of the control module, the integration level and the flexibility of the system are greatly improved, meanwhile, the discharge of cooling liquid can be coordinated and distributed through the control module according to different liquid discharge requirements, an ultra-clean liquid discharge mode is implemented to realize efficient and thorough discharge of the cooling liquid, and adverse effects on the reliability and the performance of the cooling medium caused by mixing of the cooling medium when a set of immersed liquid cooling system uses various cooling mediums such as mineral oil, fluoride liquid and the like are avoided, so that the application space of the liquid cooling Tank is greatly expanded, and the practical value is higher.
In one embodiment of the present disclosure, referring to fig. 5, based on the currently required operation mode of the immersion liquid cooling system, controlling the circulation pump and the opening and closing of all control valves includes:
if the current required working mode of the immersed liquid cooling system is a normal heat dissipation mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module, the first bypass branch, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are recorded as circulating heat dissipation pipelines;
The opening of the circulating pump is controlled, the operation direction is clockwise, the control valves (namely the valves 2, 5, 7 and 8 in the figure) on all the branches in the circulating heat dissipation pipeline are controlled to be opened, and the rest control valves are controlled to be closed.
The circulating pump is usually installed in the pipeline, the rotation operation direction of the circulating pump determines the direction of the cooling liquid flowing through the pipeline, the opening of the circulating pump is controlled, and the operation direction is clockwise, namely the cooling liquid in the driving pipeline flows from the second end of the circulating pump to the first end of the circulating pump. Then under the power drive of the circulating pump, the cooling liquid in the Tank module flows into the heat exchange module from the liquid outlet through the valve 5, flows out after being cooled in the heat exchange module, flows back into the liquid inlet of the Tank module through the valve 8, the valve 2, the circulating pump and the valve 7 in sequence, cools and dissipates heat to the heating equipment, and flows out from the liquid outlet to complete a heat dissipation cycle.
On the basis of the communicated structural design of the immersed liquid cooling system, through the driving of the circulating pump and the coordinated distribution of the control module to the control valve, the cooling liquid can effectively circulate, absorb heat from the heating equipment, and flow back to the Tank module again after being cooled in the heat exchange module, so that the continuous effective cooling of the heating equipment is ensured, the stability and the reliability of the heating equipment are improved, the recovery and the reutilization of energy are realized, and the energy conservation and the environmental protection are facilitated.
In one embodiment of the present disclosure, referring to fig. 6, based on the currently required operation mode of the immersion liquid cooling system, controlling the circulation pump and the opening and closing of all control valves includes:
if the current required working mode of the immersed liquid cooling system is a liquid injection mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
The third port of the liquid storage module, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are connected through a connecting passage, and the connecting passage is recorded as a liquid supply pipeline;
the opening of the circulating pump is controlled, the operation direction is clockwise, the control valves on all branches in the pressure stabilizing pipeline and the liquid supply pipeline are controlled to be opened (namely, valves 2, 3, 4, 5 and 7 in the figure), and the rest control valves are controlled to be closed.
It will be appreciated that the cooling fluid stored in the Tank module may evaporate water in the cooling fluid during the continuous heat dissipation operation, so that the liquid level is reduced, or the components in the cooling fluid may be affected by oxidation and reduced, so that a new cooling fluid needs to be added to the Tank module to maintain the stability and heat dissipation effect of the immersion liquid cooling system.
Specifically, the opening of the circulating pump is controlled, the operation direction is clockwise, namely, the cooling liquid in the driving pipeline flows from the second end of the circulating pump to the first end of the circulating pump, then the cooling liquid in the liquid storage module flows out from the third port under the power driving of the circulating pump, and is injected into the liquid inlet of the Tank module through the valve 3, the valve 2, the circulating pump and the valve 7, so that the new cooling liquid is supplemented and injected into the Tank module, and meanwhile, the air existing at the top end of the Tank module is output from the liquid outlet of the Tank module along the pressure stabilizing pipeline and is transferred and conveyed into the liquid storage module through the valve 5, the heat exchange module, the valve 4 and the first port of the liquid storage module, and the balance of the system pressure is maintained.
On the basis of the communicated structural design of the immersed liquid cooling system, through the driving of the circulating pump and the coordinated distribution of the control module to the control valve, the cooling liquid can be effectively supplemented or injected from the liquid storage module to the Tank module without manual intervention, so that the Tank module can keep a stable liquid level, the stability and the reliability of the immersed liquid cooling system are improved, the air in the Tank module can be discharged under the condition that an exhaust port is not designed through the design of a pressure stabilizing pipeline, the adverse effects on the system caused by the accumulation of the air in the cooling liquid, such as local overheating, are prevented, the volatilization leakage condition of the fluorinated liquid is avoided to the greatest extent, the safety of testers is ensured, and meanwhile, the balance of the internal pressure of the system is maintained.
In one embodiment of the present disclosure, referring to fig. 7, based on the currently required operation mode of the immersion liquid cooling system, the controlling the circulation pump and the opening and closing of all control valves includes:
If the current required working mode of the immersed liquid cooling system is a liquid discharging mode, the method comprises the following steps:
the liquid outlet of the Tank module, the second end of the circulating pump, the first end of the circulating pump and the second port of the liquid storage module are marked as liquid outlet pipelines;
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
And controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the liquid discharge pipeline and the pressure stabilizing pipeline, and closing the rest control valves.
Specifically, the opening of the circulating pump is controlled, the operation direction is clockwise, namely, the cooling liquid in the driving pipeline flows from the second end of the circulating pump to the first end of the circulating pump, then under the power driving of the circulating pump, the cooling liquid in the Tank module flows out from the liquid outlet, and is discharged into the Tank module through the valve 6, the circulating pump, the valve 1 and the second port of the Tank module, so that the cooling liquid in the Tank module is discharged, and meanwhile, the air existing at the top end of the Tank module is output from the first port of the Tank module along the pressure stabilizing pipeline and is transferred to the Tank module through the valve 4, the heat exchange module, the valve 5 and the liquid outlet of the Tank module, the discharging of the cooling liquid in the heat exchange module and the pressure stabilizing pipeline is further realized, and the balance of the system pressure is maintained.
On the basis of the communicated structural design of the immersion liquid cooling system, through the driving of the circulating pump and the coordinated distribution of the control module to the control valve, the cooling liquid in the Tank module can be effectively discharged from the Tank module to the liquid storage module, so that the liquid discharge efficiency of the immersion liquid cooling system is improved, the waste of resources is avoided, manual intervention is not needed, and through the design of the pressure stabilizing pipeline, the cooling liquid in the heat exchange module and the pressure stabilizing pipeline can be discharged into the Tank module to be completely discharged together with the discharge of the cooling liquid in the Tank module, the adverse effects caused by incomplete discharge of the cooling liquid in the heat exchange module, the pressure stabilizing pipeline and the Tank module are prevented, a good basis is provided for testing application spaces of different types of cooling mediums and expansion liquid cooling Tank by a set of single-phase immersion liquid cooling system, and meanwhile, the balance of pressure inside the system can be maintained under the condition that an exhaust port is not designed.
In one embodiment of the present disclosure, after the "control the opening of the circulation pump and the operation direction is clockwise, and control the opening of the control valves on each branch of the liquid discharge pipeline and the pressure stabilizing pipeline, the remaining control valves are closed", the method further includes:
And monitoring the liquid level of the cooling liquid in the Tank module in real time, when the liquid level of the cooling liquid in the Tank module is smaller than a preset threshold value, maintaining a liquid discharge mode, controlling a control valve on a branch path between a liquid discharge port of the Tank module and a second end of the circulating pump to be closed for a preset period of time, and then controlling the control valve on the branch path between the liquid discharge port of the Tank module and the second end of the circulating pump to be opened.
In this embodiment, a gas-liquid two-phase pump is adopted, when the liquid level of the cooling liquid in the Tank module is less than a preset threshold, that is, at the tail end of a liquid discharge mode of the immersed liquid cooling system, the valve 6 is closed, air in the liquid storage module is continuously pumped into the Tank module, and when the pressure in the Tank module reaches a certain degree, that is, after the valve 6 is closed for a preset period of time, the valve 6 is opened, so that a small amount of residual cooling liquid in the Tank module can be effectively discharged under the extrusion action of high-pressure gas, and the cooling liquid in the Tank module is discharged more thoroughly.
In one embodiment of the present disclosure, referring to fig. 8, based on the currently required operation mode of the immersion liquid cooling system, the controlling the circulation pump and the opening and closing of all control valves includes:
if the current required working mode of the immersed liquid cooling system is an ultra-clean liquid discharging mode, the method comprises the following steps:
The second port of the liquid storage module, the first end of the circulating pump, the second end of the circulating pump and the connecting passage between the first port of the liquid storage module are marked as ultra-clean liquid discharge pipelines;
and monitoring whether cooling liquid exists in the Tank module, and when the cooling liquid does not exist in the Tank module, controlling the opening of the circulating pump, the operation direction of the circulating pump to be clockwise, and controlling the control valves on all branches in the ultra-clean liquid discharge pipeline to be opened and the rest control valves to be closed.
Specifically, after the cooling liquid in the Tank is thoroughly discharged, the circulating pump is started for a period of time, the opening of the circulating pump is controlled, the operation direction is clockwise, namely, the cooling liquid in the driving pipeline flows from the second end of the circulating pump to the first end of the circulating pump, then under the power driving of the circulating pump, the air in the liquid storage module is output from the first end of the liquid storage module, and is transferred and conveyed back to the liquid storage module through the valve 4, the valve 8, the valve 2, the circulating pump, the valve 1 and the first end of the liquid storage module, so that a small amount of cooling liquid remained in the circulating pump, the liquid discharge pipeline and the liquid supply pipeline can be effectively discharged back to the liquid storage module under the extrusion action of high-pressure gas, and the liquid discharge is completed to the maximum extent of the whole system.
Based on the communication type structural design of the immersed liquid cooling system, the control valve is coordinately distributed by the driving of the circulating pump and the control module, a small amount of cooling liquid remained in the circulating pump, the liquid discharge pipeline and the liquid supply pipeline can be effectively discharged back to the liquid storage module by utilizing the extrusion action of high-pressure gas, so that the liquid discharge in the whole system is completely realized to the greatest extent, adverse effects caused by incomplete discharge of the cooling liquid in the circulating pump, the liquid discharge pipeline and the liquid supply pipeline are prevented, a set of single-phase immersed liquid cooling system is further ensured to be capable of testing different types of cooling media, the application space of the liquid cooling Tank is greatly expanded, and meanwhile, the balance of the pressure in the system can be maintained under the condition of not designing an exhaust port, so that the immersed liquid cooling system has higher practical value.
In summary, the communication design of the entire immersion liquid cooling system enables the entire system to realize normal heat dissipation work, liquid injection work and liquid discharge work of the immersion liquid cooling system under the coordinated allocation of the control module by adopting one circulating pump, so that the integration level and flexibility of the system are greatly improved, the system structure is simplified to a certain extent, the cost is reduced, meanwhile, the liquid injection/discharge process is performed in a sealing way, the volatilization leakage condition of the fluoride liquid is avoided to the greatest extent, the safety of testers is ensured, the discharge of the cooling liquid can be coordinated and allocated through the control module according to different liquid discharge requirements, the efficient and thorough discharge of the cooling liquid is realized, the adverse effect of the mixing of the cooling medium is avoided when a set of immersion liquid cooling system uses various cooling mediums such as mineral oil and fluoride liquid, the application space of the liquid cooling Tank is greatly expanded, and the practical value is higher.
In the foregoing, the preferred embodiments of the present disclosure and the description of the technical principles applied thereto are only preferred embodiments, and it should be understood by those skilled in the art that the scope of protection in the present disclosure is not limited to the specific combination of the technical features described above, but other technical solutions formed by any combination of the technical features described above or the equivalent thereof are also contemplated without departing from the concept disclosed above. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).
Moreover, although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Claims (10)
1. An immersion liquid cooling system is characterized by comprising a Tank module, a liquid storage module, a circulating pump, a heat exchange module, a first bypass branch and a control module,
The Tank module is used for containing cooling liquid and heating equipment, a liquid outlet is formed in the top end of the Tank module, and a liquid inlet and a liquid outlet are formed in the bottom of the Tank module;
The top end of the liquid storage module is provided with a first port, the bottom end of the liquid storage module is provided with a second port and a third port, the liquid inlet of the Tank module and the second port of the liquid storage module are both connected with the first end of the circulating pump, and the liquid outlet of the Tank module is connected with the second end of the circulating pump;
The heat exchange module is used for cooling the cooling liquid, the input end of the heat exchange module is connected with the liquid outlet of the Tank module, the first port of the liquid storage module and the output end of the heat exchange module are both connected with one end of the first bypass branch, and the third port of the liquid storage module and the second end of the circulating pump are both connected with the other end of the first bypass branch;
And each branch of the immersed liquid cooling system is provided with a control valve, and the control module is used for controlling the circulating pump and all the switches of the control valves.
2. An immersion liquid cooling system as claimed in claim 1, wherein,
The immersion liquid cooling system comprises a liquid level sensor, wherein the liquid level sensor is used for monitoring the liquid level height of cooling liquid in the Tank module, and the liquid level sensor is in communication connection with the control module.
3. An immersion liquid cooling system as claimed in any one of claims 1 to 2, wherein,
The immersed liquid cooling system comprises a second bypass branch, two ends of the second bypass branch are respectively connected with two ends of the pump, a control valve is arranged on the second bypass branch, and the control valve on the second bypass branch is connected with the control module.
4. An immersion liquid cooling system as claimed in any one of claims 1 to 2, wherein,
And a filter is arranged on a branch path between the liquid storage module and the Tank module.
5. A method of controlling an immersion liquid cooling system, realized by an immersion liquid cooling system according to any one of claims 1 to 4, comprising the steps of:
Acquiring a current required working mode of an immersion liquid cooling system, wherein the working mode comprises a normal heat radiation mode, a liquid injection mode, a liquid discharge mode and an ultra-clean liquid discharge mode;
And controlling the circulation pump and the opening and closing of all control valves based on the current required working mode of the immersed liquid cooling system.
6. A control method of an immersion liquid cooling system as claimed in claim 5, wherein,
Based on the current required working mode of the immersion liquid cooling system, the control of the circulating pump and the opening and closing of all control valves comprises the following steps:
if the current required working mode of the immersed liquid cooling system is a normal heat dissipation mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module, the first bypass branch, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are recorded as circulating heat dissipation pipelines;
and controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the circulating heat dissipation pipeline, and closing the rest control valves.
7. A control method of an immersion liquid cooling system as claimed in claim 5, wherein,
Based on the current required working mode of the immersion liquid cooling system, the control of the circulating pump and the opening and closing of all control valves comprises the following steps:
if the current required working mode of the immersed liquid cooling system is a liquid injection mode, the method comprises the following steps:
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
The third port of the liquid storage module, the second end of the circulating pump, the first end of the circulating pump and the liquid inlet of the Tank module are connected through a connecting passage, and the connecting passage is recorded as a liquid supply pipeline;
And controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the pressure stabilizing pipeline and the liquid supply pipeline, and closing the rest control valves.
8. A control method of an immersion liquid cooling system as claimed in claim 5, wherein,
Based on the current required working mode of the immersion liquid cooling system, the control of the circulating pump and the opening and closing of all control valves comprises the following steps:
If the current required working mode of the immersed liquid cooling system is a liquid discharging mode, the method comprises the following steps:
the liquid outlet of the Tank module, the second end of the circulating pump, the first end of the circulating pump and the second port of the liquid storage module are marked as liquid outlet pipelines;
The liquid outlet of the Tank module, the input end of the heat exchange module, the output end of the heat exchange module and the first port of the liquid storage module are marked as pressure stabilizing pipelines;
And controlling the opening of the circulating pump, wherein the operation direction is clockwise, and controlling the opening of control valves on all branches in the liquid discharge pipeline and the pressure stabilizing pipeline, and closing the rest control valves.
9. A method of controlling an immersion liquid cooling system as claimed in claim 8, wherein,
After the control valves on each branch in the liquid discharge pipeline and the pressure stabilizing pipeline are controlled to be opened and the other control valves are closed, the method further comprises the following steps:
And monitoring the liquid level of the cooling liquid in the Tank module in real time, when the liquid level of the cooling liquid in the Tank module is smaller than a preset threshold value, maintaining a liquid discharge mode, controlling a control valve on a branch path between a liquid discharge port of the Tank module and a second end of the circulating pump to be closed for a preset period of time, and then controlling the control valve on the branch path between the liquid discharge port of the Tank module and the second end of the circulating pump to be opened.
10. A control method of an immersion liquid cooling system as claimed in claim 5, wherein,
Based on the current required working mode of the immersion liquid cooling system, the control of the circulating pump and the opening and closing of all control valves comprises the following steps:
if the current required working mode of the immersed liquid cooling system is an ultra-clean liquid discharging mode, the method comprises the following steps:
The second port of the liquid storage module, the first end of the circulating pump, the second end of the circulating pump and the connecting passage between the first port of the liquid storage module are marked as ultra-clean liquid discharge pipelines;
and monitoring whether cooling liquid exists in the Tank module, and when the cooling liquid does not exist in the Tank module, controlling the opening of the circulating pump, the operation direction of the circulating pump to be clockwise, and controlling the control valves on all branches in the ultra-clean liquid discharge pipeline to be opened and the rest control valves to be closed.
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| CN202410029021.XA CN118139366A (en) | 2024-01-09 | 2024-01-09 | Immersed liquid cooling system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410029021.XA CN118139366A (en) | 2024-01-09 | 2024-01-09 | Immersed liquid cooling system and control method thereof |
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