CN116471802A - Cooling liquid backflow control method and system and liquid cooling cabinet - Google Patents
Cooling liquid backflow control method and system and liquid cooling cabinet Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 326
- 238000001816 cooling Methods 0.000 title claims abstract description 233
- 239000000110 cooling liquid Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000010992 reflux Methods 0.000 claims abstract description 314
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000012809 cooling fluid Substances 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims description 53
- 238000012360 testing method Methods 0.000 claims description 27
- 230000008859 change Effects 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 5
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- 230000002159 abnormal effect Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
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- 230000003287 optical effect Effects 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20763—Liquid cooling without phase change
- H05K7/20781—Liquid cooling without phase change within cabinets for removing heat from server blades
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a cooling liquid reflux control method, a cooling liquid reflux control system and a liquid cooling cabinet, wherein the method comprises the following steps: acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate; determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server; generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data; and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data. The invention controls the flow rate of the reflux liquid delivered to the cooling device, and avoids the influence of abnormal reflux of the cooling liquid on the stability of the whole server.
Description
Technical Field
The invention relates to the technical field of liquid cooling heat dissipation, in particular to a method and a system for controlling backflow of cooling liquid and a liquid cooling cabinet.
Background
The cold plate type liquid cooling technology uses working fluid (namely cooling liquid) as medium for intermediate heat transmission, and heat in the server is transferred from a hot area to a far place through the liquid cooling cold plate for cooling, and as the cooling liquid is separated from a cooled object (such as a server main board), the cooling liquid is not in direct contact with the electronic device, so that the safety of the electronic device is ensured, and meanwhile, the heat dissipation efficiency is also improved.
The existing liquid cooling scheme mainly controls a liquid cooling pipeline on one side of cooling liquid conveying and the flow rate of liquid cooling so as to achieve the purpose of effectively solving the heat dissipation of a high-density server and further improve the stability of the server. For the reflux liquid formed by transferring heat in the server through the liquid cooling cold plate, when the flow velocity of the reflux liquid in the reflux pipeline is abnormal, the stability of the whole server is also affected, for example, the temperature of the server is increased, the resource occupancy rate is too high, and the stability of the server is reduced.
Therefore, a need exists for a method, system, and liquid cooling cabinet for controlling the backflow of cooling liquid.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a cooling liquid backflow control method, a cooling liquid backflow control system and a liquid cooling cabinet.
The invention provides a cooling liquid reflux control method, which comprises the following steps:
acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate;
determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server;
generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data;
and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
According to the method for controlling the reflux of the cooling liquid, the generating of the corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data comprises the following steps:
acquiring a reflux liquid flow adjustment weight and a target adjustment strategy according to the cooling liquid flow velocity data and the target reflux liquid flow velocity data;
and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate adjustment weight and the target adjustment strategy.
According to the method for controlling the reflux of the cooling liquid provided by the invention, the corresponding target reflux liquid flow rate adjustment data is generated according to the reflux liquid flow rate adjustment weight and the target adjustment strategy, and the method comprises the following steps:
determining the reflux flow rate adjustment weight based on a difference between the coolant flow rate data and the target reflux flow rate data;
according to the reflux flow speed adjustment weight, the target reflux flow speed data and a preset reflux flow speed adjustment unit time, obtaining a reflux flow change rate;
if the coolant flow rate data is larger than the target reflux flow rate data, determining that the target adjustment strategy is a reflux flow rate reduction strategy, and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate change rate and the reflux flow rate reduction strategy;
and if the cooling fluid flow rate data is smaller than the target reflux fluid flow rate data, determining that the target adjustment strategy is a reflux fluid flow rate lifting strategy, and generating corresponding target reflux fluid flow rate adjustment data according to the reflux fluid change rate and the reflux fluid flow rate lifting strategy.
According to the method for controlling the back flow of the cooling liquid provided by the invention, before the corresponding target back flow speed adjustment data is generated according to the cooling liquid flow speed data and the target back flow speed data, the method further comprises the following steps:
acquiring a difference between the coolant flow rate data and the target reflux flow rate data;
and if the difference value is greater than or equal to a preset threshold value, generating a high-risk early warning strategy, and executing closing operation on the liquid cooling server through the high-risk early warning strategy.
According to the method for controlling the backflow of the cooling liquid provided by the invention, the method for determining the target backflow liquid flow rate data based on the resource occupancy rate of the liquid cooling server comprises the following steps:
acquiring the resource occupancy rate of each resource in the liquid cooling server, wherein the resource at least comprises a central processing unit, a memory and a hard disk in the liquid cooling server;
and determining target reflux liquid flow rate data according to the mapping relation between the resource occupancy rate of each resource and the preset reflux liquid flow rate.
According to the method for controlling the reflux of the cooling liquid provided by the invention, after the target reflux liquid flow rate data is determined based on the resource occupancy rate of the liquid cooling server, the method further comprises the following steps:
acquiring temperature data of each resource in the liquid cooling server;
and adjusting the target reflux flow rate data based on the temperature data of each resource and the preset temperature to obtain adjusted target reflux flow rate data.
According to the method for controlling reflux of cooling liquid provided by the invention, after the flow rate of reflux liquid delivered to the cooling device is controlled by the target reflux liquid flow rate adjustment data, the method further comprises:
and when the flow speed of the reflux liquid conveyed to the cooling device reaches the target reflux liquid flow speed data, monitoring the operation state of the liquid cooling server to generate corresponding operation state monitoring data.
According to the method for controlling reflux of cooling liquid provided by the invention, after the flow rate of reflux liquid delivered to the cooling device is controlled by the target reflux liquid flow rate adjustment data, the method further comprises:
after determining that the flow rate of the reflux liquid delivered to the cooling device reaches the target reflux liquid flow rate data, receiving a first input, wherein the first input comprises an operation of determining a reflux liquid test flow rate adjustment strategy when the liquid cooling server performs a pressure test, and the reflux liquid test flow rate adjustment strategy at least comprises flow rate increment adjustment, flow rate decrement adjustment and flow rate fluctuation adjustment;
responding to the first input, adjusting the flow rate of the reflux liquid conveyed to the cooling device at the current moment according to the reflux liquid test flow rate adjustment strategy, and monitoring the running state of the liquid cooling server based on the adjusted flow rate of the reflux liquid to generate corresponding server pressure test data.
The invention also provides a cooling liquid reflux control system based on the cooling liquid reflux control method, which comprises a flowmeter and a flow rate control module, wherein:
the flowmeter is connected with a liquid cooling output end of the cooling device and is used for acquiring cooling liquid flow rate data in a liquid cooling output pipeline of the cooling device and sending the cooling liquid flow rate data to the flow rate control module, wherein the cooling device is used for cooling reflux liquid conveyed by the liquid cooling cold plate after the cooling liquid flows through the liquid cooling cold plate of the liquid cooling server;
the flow rate control module is connected with the reflux liquid input end of the cooling device and is used for generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data, and controlling the flow rate of the reflux liquid conveyed to the cooling device through the target reflux liquid flow rate adjustment data, wherein the target reflux liquid flow rate data is obtained based on the resource occupancy rate of the liquid cooling server.
The invention also provides a liquid cooling cabinet, which comprises a liquid cooling cold plate, a reflux liquid input pipeline, a cooling liquid output pipeline, a cooling device and the cooling liquid reflux control system.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the control method of the cooling liquid backflow when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of controlling the backflow of a cooling fluid as described in any of the above.
According to the cooling liquid reflux control method, the cooling liquid reflux control system and the liquid cooling cabinet, the cooling liquid flow rate data in the liquid cooling output pipeline of the cooling device is obtained, so that corresponding target reflux liquid flow rate adjustment data are generated according to the cooling liquid flow rate data and the target reflux liquid flow rate data, the flow rate of reflux liquid conveyed to the cooling device is controlled, and the influence of abnormal reflux of the cooling liquid on the overall stability of a server is avoided.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for controlling the backflow of a cooling liquid;
FIG. 2 is a schematic diagram of a monitoring process of a liquid cooling server based on a control method of back flow of a cooling liquid;
FIG. 3 is a schematic diagram of a pressure test process of a liquid cooling server based on a control method of back flow of a cooling liquid;
FIG. 4 is a schematic diagram of a cooling liquid reflux control system according to the present invention;
FIG. 5 is a schematic diagram of a flow rate control module according to the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the cold plate type liquid cooling technology, a cooling liquid is separated from an object to be cooled so that the cooling liquid is not in direct contact with an electronic device, but heat of the object to be cooled is transferred to a refrigerant by a high-efficiency heat conduction member such as a liquid cooling plate, and thus the cold plate type liquid cooling technology is also called an indirect liquid cooling technology. The cold plate type liquid cooling technology directly guides the coolant to the heat source, and meanwhile, the heat dissipation speed is far higher than that of air because the specific heat of the liquid is higher than that of the air, so that the refrigeration efficiency is far higher than that of air cooling heat dissipation.
The cold plate type liquid cooling is characterized in that a liquid cooling pipeline for conveying cooling liquid is arranged in the server cabinet, so that the conveying flow of the cooling liquid can be monitored in real time generally for maintaining higher heat dissipation efficiency, and the normal and stable operation of the server is further ensured. However, monitoring of server stability is currently performed mainly by controlling the flow rate of the coolant delivered by the cooling device to the object to be cooled, i.e. by delivering a coolant at a low temperature and at a flow rate that meets the requirements. However, the existing solution does not control the backflow of the cooling liquid, and because the cooling device needs to circulate to cool the backflow liquid again, when the backflow liquid has an abnormal condition, the cooling device may not improve enough cooling liquid to be delivered to the object to be cooled, and therefore, when the backflow abnormality occurs to the cooling liquid, the influence on the overall stability of the server is objectively present.
Fig. 1 is a schematic flow chart of a method for controlling backflow of a cooling liquid according to the present invention, and as shown in fig. 1, the present invention provides a method for controlling backflow of a cooling liquid, including:
and 101, acquiring cooling liquid flow rate data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux liquid conveyed by a liquid cooling plate of a liquid cooling server after the cooling liquid flows through the liquid cooling plate.
In the invention, a flow rate meter is arranged between a cooling liquid output end of a cooling device and an object to be cooled, for example, the cooling liquid is conveyed from the cooling device to a liquid cooling output pipeline and then flows through a liquid cooling cold plate of a central processing unit (Central Processing Unit, CPU) of a server, and the flow rate of the cooling liquid in the liquid cooling output pipeline is monitored by the flow rate meter, so that flow rate data of the cooling liquid conveyed by the liquid cooling cold plate at the CPU is obtained. In the present invention, in order to ensure that the coolant flow in the liquid cooling server is balanced, the flow rates of the coolant output from the cooling device and the coolant input to the cooling device need to be kept identical, that is, when there is no abnormality in the flow rate of the coolant, the flow rate of the coolant and the flow rate of the coolant (i.e., coolant flow rate data) are identical, and accordingly, a flow rate meter may be provided on the side of the coolant input pipe of the cooling device to monitor the flow rate of the coolant.
And 102, determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server.
In the invention, the target reflux flow rate data can be preset, and can also be determined according to the occupancy rate of various resources (such as a CPU, a memory, a hard disk and the like) in the liquid cooling server by utilizing the existing constructed mapping relation between the occupancy rate of the resources and the flow rate of the reflux liquid.
And step 103, generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data.
In the invention, when the cooling liquid flow rate data and the target reflux liquid flow rate data are kept consistent, judging that the current reflux liquid flow rate has no abnormal condition; when the coolant flow rate data is greater than or less than the target return flow rate data, it is determined that there is an abnormality in the current flow rate of the return fluid, and the flow rate of the return fluid needs to be controlled, for example, when the flow rate of the coolant flow rate data is less than the target return flow rate data, it means that the current flow rate of the return fluid is low, and the flow rate of the return fluid needs to be adjusted high.
And 104, controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
In the invention, after judging and knowing that the abnormal condition exists in the reflux liquid at the current moment, the target reflux liquid flow rate adjustment data is obtained by calculation according to the cooling liquid flow rate data and the target reflux liquid flow rate data, so that the flow rate of the reflux liquid which is transmitted to the cooling device is controlled, for example, the flow rate of the reflux liquid is too slow (namely, the cooling liquid flow rate data is smaller than the target reflux liquid flow rate data), and the flow rate of the current reflux liquid needs to be improved.
According to the cooling liquid reflux control method provided by the invention, the cooling liquid flow rate data in the liquid cooling output pipeline of the cooling device is obtained, so that corresponding target reflux liquid flow rate adjustment data is generated according to the cooling liquid flow rate data and the target reflux liquid flow rate data, the flow rate of reflux liquid conveyed to the cooling device is controlled, and the influence of abnormal reflux of the cooling liquid on the overall stability of the server is avoided.
On the basis of the foregoing embodiment, the generating the corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data includes:
acquiring a reflux liquid flow adjustment weight and a target adjustment strategy according to the cooling liquid flow velocity data and the target reflux liquid flow velocity data;
and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate adjustment weight and the target adjustment strategy.
In the invention, a target adjustment strategy can be first determined according to the comparison relation between the cooling fluid flow rate data and the target reflux fluid flow rate data, namely whether the current reflux fluid flow rate input to the cooling device is increased or decreased is judged; then, according to the comparison relation, a reflux liquid flow adjustment weight, for example, a difference value between the cooling liquid flow data and the target reflux liquid flow data is generated, and then the increase rate or the decrease rate of the flow rate of the reflux liquid in unit time is calculated by combining the difference value with the target reflux liquid flow data, so that the problem that the cooling liquid of the whole liquid cooling system is balanced and unbalanced due to direct adjustment of the flow rate of the reflux liquid is avoided.
On the basis of the foregoing embodiment, the generating, according to the reflux liquid flow rate adjustment weight and the target adjustment policy, corresponding target reflux liquid flow rate adjustment data includes:
determining the reflux flow rate adjustment weight based on a difference between the coolant flow rate data and the target reflux flow rate data;
according to the reflux flow speed adjustment weight, the target reflux flow speed data and a preset reflux flow speed adjustment unit time, obtaining a reflux flow change rate;
if the coolant flow rate data is larger than the target reflux flow rate data, determining that the target adjustment strategy is a reflux flow rate reduction strategy, and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate change rate and the reflux flow rate reduction strategy;
and if the cooling fluid flow rate data is smaller than the target reflux fluid flow rate data, determining that the target adjustment strategy is a reflux fluid flow rate lifting strategy, and generating corresponding target reflux fluid flow rate adjustment data according to the reflux fluid change rate and the reflux fluid flow rate lifting strategy.
In the present invention, the target adjustment strategy is determined based on the size between the coolant flow rate data and the target reflux flow rate data, for example, when the coolant flow rate data is 1.8 m/s, the target reflux flow rate data is 2.0 m/s, and the reflux flow rate needs to be raised at this time; further, according to a reflux liquid flow speed adjusting weight formula, obtaining a reflux liquid flow speed adjusting weight, wherein the reflux liquid flow speed adjusting weight formula is as follows:
wherein ω represents reflux flow velocity adjustment weight, V 1 Representing coolant flow data, V 2 Indicating target reflux flow rate data.
Further, the reflux liquid change rate is calculated by a reflux liquid change rate formula, wherein the formula is as follows:
ΔV＝ω×V 2 ×T；
wherein DeltaV represents the reflux liquid change rate, and T represents the preset reflux liquid flow rate adjustment unit time. In an embodiment, the preset reflux flow speed adjustment unit time is illustrated as 1 minute, when the flow speed data of the cooling liquid is 1.8 m/s and the target reflux flow speed data is 2.0 m/s, the reflux flow speed adjustment weight omega is 0.1, and then the reflux flow change rate is calculated according to the reflux change rate formula to obtain the reflux flow change rate of 0.2 m/min, that is, the flow speed lifting rate of the reflux is 0.2 m/min, so that the flow speed data of the cooling liquid is lifted to the target reflux flow speed data at a constant speed, and the relative balance of the flow speed of the cooling liquid in the pipeline is ensured all the time when the flow speed of the cooling liquid in the liquid cooling system is adjusted.
On the basis of the above embodiment, before the generating the corresponding target reflux flow rate adjustment data according to the coolant flow rate data and the target reflux flow rate data, the method further includes:
acquiring a difference between the coolant flow rate data and the target reflux flow rate data;
and if the difference value is greater than or equal to a preset threshold value, generating a high-risk early warning strategy, and executing closing operation on the liquid cooling server through the high-risk early warning strategy.
In the invention, when the difference between the coolant flow rate data and the target reflux flow rate data is larger, namely exceeds a preset threshold, the scheme for adjusting the reflux flow rate can be judged to be incapable of ensuring the stability of the liquid cooling server, the serious problems of pipeline liquid leakage and the like can occur, and the server safety risk is high. At this time, the liquid cooling server needs to be turned off, and the liquid cooling server is restarted after the risk elimination is determined.
Based on the above embodiment, the determining the target reflux stream flow rate data based on the resource occupancy rate of the liquid cooling server includes:
acquiring the resource occupancy rate of each resource in the liquid cooling server, wherein the resource at least comprises a central processing unit, a memory and a hard disk in the liquid cooling server;
and determining target reflux liquid flow rate data according to the mapping relation between the resource occupancy rate of each resource and the preset reflux liquid flow rate.
In the invention, the target reflux flow rate data can be obtained from a user side (such as an operation and maintenance user side) in a setting mode. Preferably, according to the current time of the liquid cooling server (a preset time can be set, when the preset time is reached, a target reflux flow rate data is determined according to the resource occupancy rate), the resource occupancy rate of each resource in the liquid cooling server, such as the occupancy rate of devices such as a CPU, a memory and a hard disk, is determined according to the resource occupancy rate obtained at the current time by utilizing the mapping relationship between the resource occupancy rate constructed in advance and the preset reflux flow rate.
On the basis of the foregoing embodiment, after the determining the target reflux liquid flow rate data based on the resource occupancy rate of the liquid cooling server, the method further includes:
acquiring temperature data of each resource in the liquid cooling server;
and adjusting the target reflux flow rate data based on the temperature data of each resource and the preset temperature to obtain adjusted target reflux flow rate data.
In the invention, after the target reflux flow rate data is determined, the target reflux flow rate data can be modified according to the temperature data and the preset temperature of the resources at the current moment, for example, the preset temperature is 70 ℃, but the temperature data of each resource at the current moment is 85 ℃ (the resource at the highest temperature at the current moment can be used as a reference object), the target reflux flow rate data is required to be adjusted according to the difference between the real-time temperature data and the preset temperature (namely, the numerical value of the target reflux flow rate data is further improved), so that the adjusted reflux flow rate can keep the temperature of each resource within a reasonable range while ensuring the resource occupancy rate, and the stability of the liquid cooling server is improved.
On the basis of the above embodiment, after the flow rate of the reflux liquid delivered to the cooling device is controlled by the target reflux liquid flow rate adjustment data, the method further includes:
and when the flow speed of the reflux liquid conveyed to the cooling device reaches the target reflux liquid flow speed data, monitoring the operation state of the liquid cooling server to generate corresponding operation state monitoring data.
FIG. 2 is a schematic diagram of a monitoring process of a liquid cooling server based on a control method for controlling backflow of a cooling liquid, which can be referred to as shown in FIG. 2, in the invention, first, a target backflow flow rate data is determined, i.e. by inputting a verification flow rate, so as to detect whether a real-time flow rate meets the verification flow rate through a subsequent step; then, judging whether the coolant flow rate data meets the verification flow rate by acquiring the reading of the flowmeter, and adjusting the flow rate of the coolant return to a target value by adjusting a related device such as a flow rate valve when the coolant flow rate data does not meet the verification flow rate; further, when it is determined that the flow rate of the reflux liquid delivered to the cooling device reaches the target reflux liquid flow rate data, performing a complete machine pressure test on the operation state of the liquid cooling server, that is, monitoring performance of each resource and sensor index data in the liquid cooling server under the condition that the flow rate of the reflux liquid is in a normal state, specifically, monitoring each sensor data of the liquid cooling server: CPU temperature, memory temperature, air inlet temperature, air outlet temperature, etc., and the resource occupancy rate of the server, for example: CPU occupancy rate, memory occupancy rate, hard disk occupancy rate, etc.; and finally, analyzing how long the liquid cooling server to be tested can reach what kind of occupancy rate and stably run under the current reflux flow rate condition according to the operation state monitoring data obtained by monitoring, thereby forming the whole machine pressure test data of the liquid cooling server under the normal reflux flow rate condition.
On the basis of the above embodiment, after the flow rate of the reflux liquid delivered to the cooling device is controlled by the target reflux liquid flow rate adjustment data, the method further includes:
after determining that the flow rate of the reflux liquid delivered to the cooling device reaches the target reflux liquid flow rate data, receiving a first input, wherein the first input comprises an operation of determining a reflux liquid test flow rate adjustment strategy when the liquid cooling server performs a pressure test, and the reflux liquid test flow rate adjustment strategy at least comprises flow rate increment adjustment, flow rate decrement adjustment and flow rate fluctuation adjustment;
responding to the first input, adjusting the flow rate of the reflux liquid conveyed to the cooling device at the current moment according to the reflux liquid test flow rate adjustment strategy, and monitoring the running state of the liquid cooling server based on the adjusted flow rate of the reflux liquid to generate corresponding server pressure test data.
Fig. 3 is a schematic diagram of a pressure testing process of a liquid cooling server based on a control method for backflow of cooling liquid, which can be shown in fig. 3, in an embodiment, the pressure testing is performed on the whole liquid cooling server by controlling the flow rate of the backflow liquid, so that the influence of the change of the flow rate of the backflow liquid on the stability of the liquid cooling server is accurately obtained. Specifically, after the control of the flow rate of the reflux liquid is completed through the above embodiment, it is first determined whether the occupancy rate of each resource in the liquid cooling server to be tested is constant, that is, the current occupancy rate parameters of each resource are relatively stable, if the required pressure test condition is not reached, recalibrating or waiting for the occupancy rate to be in a stable state (after the flow rate of the reflux liquid is adjusted to the target flow rate data of the reflux liquid, the cooling liquid needs a certain time to be transferred to related electronic devices to transfer heat); further, after the pressure test condition is met, a corresponding reflux liquid test flow rate adjustment strategy is executed, so that the reflux liquid flow rate is increased, decreased or severely fluctuated, and the influence of the reflux liquid flow rate change on the overall stability of the liquid cooling server is tested.
Further, in this embodiment, the current flow rate of the reflux liquid is obtained in real time through the flowmeter, then different reflux liquid test flow rate adjustment strategies are sequentially adopted to perform incremental adjustment, decremental adjustment and fluctuation adjustment on the flow rate of the reflux liquid, and in each adjustment process, the overall stability of the liquid cooling server under the current adjustment strategy is monitored, for example, in the fluctuation adjustment strategy, the flow rate of the reflux liquid can rise and fall along with time, and different flow rate change frequencies can be set according to test requirements. In this embodiment, the liquid cooling server runs the whole machine pressure test, including but not limited to CPU pressure, memory pressure, hard disk pressure and network card pressure, and then, uses the network connector to connect with the liquid cooling server network to obtain the resource occupancy rate of the liquid cooling server, and determines whether the occupancy rate of each resource or hardware of the liquid cooling server to be tested fluctuates under the conditions of increasing, decreasing or severely fluctuating flow rate of the reflux liquid, so as to accurately obtain the influence of the flow rate of the reflux liquid on the stability of the liquid cooling server, and then, according to the corresponding server pressure test data, decides the corresponding countermeasure when the actual flow rate of the reflux liquid is abnormal.
Fig. 4 is a schematic structural diagram of a cooling liquid backflow control system provided by the present invention, and as shown in fig. 4, the present invention provides a cooling liquid backflow control system based on the cooling liquid backflow control method described in the foregoing embodiments, including a flowmeter 401 and a flow rate control module 402, where:
the flowmeter 401 is connected to a liquid cooling output end of the cooling device 403, and is configured to obtain cooling liquid flow rate data in a liquid cooling output pipeline of the cooling device 403, and send the cooling liquid flow rate data to the flow rate control module 402, where the cooling device 403 is configured to cool a reflux liquid conveyed by the liquid cooling plate 404 after the cooling liquid flows through the liquid cooling plate 404 of the liquid cooling server;
the flow rate control module 402 is connected to the reflux liquid input end of the cooling device 403, and is configured to generate corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data, and control the flow rate of the reflux liquid delivered to the cooling device 403 according to the target reflux liquid flow rate adjustment data, where the target reflux liquid flow rate data is determined based on the resource occupancy rate of the liquid cooling server.
In the present invention, the flow rate meter 401, the liquid cooling plate 404, the flow rate control module 402, and the cooling device are connected by a liquid guide tube. Specifically, the liquid-cooled cold plate 404 may transfer heat in the server through the cooling fluid in the catheter, e.g., a liquid-cooled cold plate at the CPU.
Fig. 5 is a schematic diagram of a specific structure of a flow rate control module according to the present invention, and referring to fig. 5, the flow rate control module 402 includes a System On Chip (SOC), a flow rate valve 502, an interaction unit 503, a network connector 504, and a power source 505, where the System on Chip 501 is connected to the flow rate valve 502, the interaction unit 503, the network connector 504, and the power source 505 through cables. Specifically, the system-in-chip 501 obtains the target flow rate data (i.e. the target flow rate data of the reflux liquid) required to be set through the interaction unit 503, or reads the occupancy rate of components such as a CPU, a memory, a hard disk, etc. of the server to be tested through the network connector 504, obtains the required target flow rate data through analysis, and controls the flow rate of the reflux liquid through the flow rate valve 502. The power supply 505 is used to power the system on chip 501, the flow valve 502, the interaction unit 503, and the network connector 504.
According to the cooling liquid reflux control system provided by the invention, the cooling liquid flow rate data in the liquid cooling output pipeline of the cooling device is obtained, so that corresponding target reflux liquid flow rate adjustment data is generated according to the cooling liquid flow rate data and the target reflux liquid flow rate data, the flow rate of reflux liquid conveyed to the cooling device is controlled, and the influence of abnormal reflux of the cooling liquid on the overall stability of the server is avoided.
The invention also provides a liquid cooling cabinet, which comprises a liquid cooling cold plate, a reflux liquid input pipeline, a cooling liquid output pipeline, a cooling device and the cooling liquid reflux control system in each embodiment.
In the invention, the flow rate of the reflux liquid in the liquid cooling cabinet can be controlled in real time through the cooling liquid reflux control system. Specifically, a coolant pipe (including a coolant output pipe and a return fluid input pipe) between the cooling device and the liquid-cooled cold plate is provided with a coolant return flow control system, wherein a flow rate meter in the coolant return flow control system is provided in the coolant output pipe, for example, coolant is conveyed from the cooling device to the coolant output pipe and then flows to the liquid-cooled cold plate, and the flow rate of the coolant in the coolant output pipe is monitored by the flow rate meter. The invention relates to a cooling liquid reflux control system, which comprises a cooling liquid reflux control system, a reflux liquid input pipeline, a reflux liquid reflux control module, a control module and a server, wherein the flow rate control module in the cooling liquid reflux control system is arranged in the reflux liquid input pipeline and is used for controlling the flow rate of reflux liquid.
According to the liquid cooling cabinet provided by the invention, the cooling liquid flow rate data in the liquid cooling output pipeline of the cooling device is obtained, so that corresponding target reflux liquid flow rate adjustment data is generated according to the cooling liquid flow rate data and the target reflux liquid flow rate data, the flow rate of reflux liquid conveyed to the cooling device is controlled, and the influence of abnormal reflux of the cooling liquid on the overall stability of the server is avoided.
Fig. 6 is a schematic structural diagram of an electronic device according to the present invention, as shown in fig. 6, the electronic device may include: processor (Processor) 601, communication interface (Communications Interface) 602, memory (Memory) 603 and communication bus 604, wherein Processor 601, communication interface 602, memory 603 accomplish the communication between each other through communication bus 604. The processor 601 may call logic instructions in the memory 603 to perform a coolant reflux control method comprising: acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate; determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server; generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data; and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
Further, the logic instructions in the memory 603 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method of controlling the recirculation of coolant provided by the above methods, the method comprising: acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate; determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server; generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data; and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
In still another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the cooling liquid return control method provided by the above embodiments, the method comprising: acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate; determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server; generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data; and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A method for controlling backflow of a coolant, comprising:
acquiring cooling fluid flow data in a liquid cooling output pipeline of a cooling device, wherein the cooling device is used for cooling reflux fluid conveyed by a liquid cooling plate of a liquid cooling server after the cooling fluid flows through the liquid cooling plate;
determining target reflux flow rate data based on the resource occupancy rate of the liquid cooling server;
generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data;
and controlling the flow rate of the reflux liquid delivered to the cooling device according to the target reflux liquid flow rate adjustment data.
2. The method of claim 1, wherein generating corresponding target reflux flow rate adjustment data from the coolant flow rate data and the target reflux flow rate data comprises:
acquiring a reflux liquid flow adjustment weight and a target adjustment strategy according to the cooling liquid flow velocity data and the target reflux liquid flow velocity data;
and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate adjustment weight and the target adjustment strategy.
3. The method of claim 2, wherein generating the corresponding target reflux flow rate adjustment data according to the reflux flow rate adjustment weight and the target adjustment strategy comprises:
determining the reflux flow rate adjustment weight based on a difference between the coolant flow rate data and the target reflux flow rate data;
according to the reflux flow speed adjustment weight, the target reflux flow speed data and a preset reflux flow speed adjustment unit time, obtaining a reflux flow change rate;
if the coolant flow rate data is larger than the target reflux flow rate data, determining that the target adjustment strategy is a reflux flow rate reduction strategy, and generating corresponding target reflux flow rate adjustment data according to the reflux flow rate change rate and the reflux flow rate reduction strategy;
and if the cooling fluid flow rate data is smaller than the target reflux fluid flow rate data, determining that the target adjustment strategy is a reflux fluid flow rate lifting strategy, and generating corresponding target reflux fluid flow rate adjustment data according to the reflux fluid change rate and the reflux fluid flow rate lifting strategy.
4. The coolant reflux control method according to claim 2, characterized in that before the generating of the corresponding target reflux flow rate data from the coolant flow rate data and the target reflux flow rate data, the method further comprises:
acquiring a difference between the coolant flow rate data and the target reflux flow rate data;
and if the difference value is greater than or equal to a preset threshold value, generating a high-risk early warning strategy, and executing closing operation on the liquid cooling server through the high-risk early warning strategy.
5. The method of claim 1, wherein determining the target reflux flow rate data based on the resource occupancy of the liquid cooling server comprises:
acquiring the resource occupancy rate of each resource in the liquid cooling server, wherein the resource at least comprises a central processing unit, a memory and a hard disk in the liquid cooling server;
and determining target reflux liquid flow rate data according to the mapping relation between the resource occupancy rate of each resource and the preset reflux liquid flow rate.
6. The method according to claim 5, further comprising, after the determining the target reflux flow rate data based on the resource occupancy of the liquid cooling server:
acquiring temperature data of each resource in the liquid cooling server;
and adjusting the target reflux flow rate data based on the temperature data of each resource and the preset temperature to obtain adjusted target reflux flow rate data.
7. The coolant return flow control method according to any one of claims 1 to 6, characterized in that, after the flow rate of the return flow liquid fed to the cooling device is controlled by the target return flow rate adjustment data, the method further comprises:
and when the flow speed of the reflux liquid conveyed to the cooling device reaches the target reflux liquid flow speed data, monitoring the operation state of the liquid cooling server to generate corresponding operation state monitoring data.
8. The coolant return flow control method according to any one of claims 1 to 6, characterized in that, after the flow rate of the return flow liquid fed to the cooling device is controlled by the target return flow rate adjustment data, the method further comprises:
after determining that the flow rate of the reflux liquid delivered to the cooling device reaches the target reflux liquid flow rate data, receiving a first input, wherein the first input comprises an operation of determining a reflux liquid test flow rate adjustment strategy when the liquid cooling server performs a pressure test, and the reflux liquid test flow rate adjustment strategy at least comprises flow rate increment adjustment, flow rate decrement adjustment and flow rate fluctuation adjustment;
responding to the first input, adjusting the flow rate of the reflux liquid conveyed to the cooling device at the current moment according to the reflux liquid test flow rate adjustment strategy, and monitoring the running state of the liquid cooling server based on the adjusted flow rate of the reflux liquid to generate corresponding server pressure test data.
9. A coolant return flow control system based on the coolant return flow control method according to any one of claims 1 to 8, characterized by comprising a flow rate meter and a flow rate control module, wherein:
the flowmeter is connected with a liquid cooling output end of the cooling device and is used for acquiring cooling liquid flow rate data in a liquid cooling output pipeline of the cooling device and sending the cooling liquid flow rate data to the flow rate control module, wherein the cooling device is used for cooling reflux liquid conveyed by the liquid cooling cold plate after the cooling liquid flows through the liquid cooling cold plate of the liquid cooling server;
the flow rate control module is connected with the reflux liquid input end of the cooling device and is used for generating corresponding target reflux liquid flow rate adjustment data according to the cooling liquid flow rate data and the target reflux liquid flow rate data, and controlling the flow rate of the reflux liquid conveyed to the cooling device through the target reflux liquid flow rate adjustment data, wherein the target reflux liquid flow rate data is obtained based on the resource occupancy rate of the liquid cooling server.
10. A liquid cooled cabinet comprising a liquid cooled cold plate, a return fluid inlet conduit, a coolant outlet conduit, a cooling device, and the coolant return control system of claim 9.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the cooling liquid return control method according to any one of claims 1 to 8 when executing the computer program.
12. A non-transitory computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the coolant return flow control method according to any one of claims 1 to 8.
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| CN202310339649.5A CN116471802A (en) | 2023-03-31 | 2023-03-31 | Cooling liquid backflow control method and system and liquid cooling cabinet |
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| CN202310339649.5A CN116471802A (en) | 2023-03-31 | 2023-03-31 | Cooling liquid backflow control method and system and liquid cooling cabinet |
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