Liquid cooling system and control method thereof

Abstract

The present invention relates to the field of heat exchange technology, and specifically to a liquid cooling system and a control method thereof, comprising a liquid replenishing device, a liquid storage device, and a heat exchanger, which are connected to each other through a liquid pipeline; the first liquid pipeline is provided with a first on-off switch and a first power pump, the second liquid pipeline is provided with a second on-off switch and a second power pump connected in parallel with the second on-off switch, the third liquid pipeline is provided with a third on-off switch, the top of the liquid replenishing device is provided with a first exhaust pipeline, the top of the first exhaust pipeline is provided with a fourth on-off switch, the liquid storage device is also provided with a second exhaust pipeline, and the second exhaust pipeline is provided with a fifth on-off switch; the liquid replenishing device and the liquid storage device are respectively provided with a first liquid level detection device and a second liquid level detection device. The inefficient and unreasonable technical problems in the process of filling, discharging, and replenishing the working medium are solved, and the technical effects of improving work efficiency and convenient use are produced.

Description

Technical field:

[0001] The present invention relates to the technical field of heat exchange, and in particular to a liquid cooling system and a control method thereof. Background technology:

[0002] With the massive growth of communication and computing technologies such as 5G technology, artificial intelligence technology, big data, and cloud computing, the server cabinets that provide computing resources are also showing a growing trend of large-scale clusters, high power, and high heat flux density, which brings huge operating pressure to the cooling system. The cooling system characterized by liquid cooling has gradually become a mainstream application, but the existing liquid cooling system does not have a reasonable structure for efficient fluid injection, fluid discharge, and automatic fluid replenishment during heat exchange operation, which affects the system's working efficiency.

[0003] In view of this, the present invention is proposed. Summary of the invention:

[0004] The present invention provides a liquid cooling system and a control method thereof, which at least solve one of the above technical problems.

[0005] The present invention protects a liquid cooling system, including a liquid replenishing device, a liquid storage device, and a heat exchanger. The working fluid outlet of the liquid replenishing device is connected to the liquid storage device through a first liquid pipeline, the working fluid outlet of the liquid storage device is connected to the working fluid inlet of the heat exchanger through a second liquid pipeline, and the working fluid outlet of the heat exchanger is connected to the working fluid inlet of the liquid storage device through a third liquid pipeline; the first liquid pipeline is provided with a first on-off switch and a first power pump, the second liquid pipeline is provided with a second on-off switch and a second power pump connected in parallel with the second on-off switch, and the third liquid pipeline is provided with a third on-off switch, the top of the liquid replenishing device is provided with a first exhaust pipeline, and the top of the first exhaust pipeline is provided with a fourth on-off switch, the liquid storage device is also provided with a second exhaust pipeline, and the second exhaust pipeline is provided with a fifth on-off switch; the liquid replenishing device and the liquid storage device are respectively provided with a first liquid level detection device and a second liquid level detection device.

[0006] By adopting the above scheme, the working fluid outlet of the liquid storage device can also serve as the working fluid inlet of the liquid replenishing device entering the liquid storage device, the heat exchanger is connected to an external cold source, and a heat source that needs to be exchanged is set in the third liquid pipeline. The first exhaust pipeline and the second exhaust pipeline can effectively discharge the gas in the system pipeline. The first liquid level detection device and the second liquid level detection device are respectively used to detect the position of the internal working fluid liquid level.

[0007] A working medium compensation device is arranged in the liquid storage device. When in use, the liquid replenishing device can be replenished with liquid first, and then the liquid replenishing device can be used to perfuse the liquid storage device. After the perfusing is completed, the perfusion channel is closed; when the working medium is in the heat exchange process in the entire pipeline, when the working medium in the pipeline is insufficient, the liquid replenishing device is opened again to fill the liquid storage device.

[0008] Furthermore, the liquid cooling system also includes a working fluid supply device, the working fluid supply device is connected to the liquid replenishing device through a fourth liquid pipeline, and the fourth liquid pipeline is provided with a third power pump and a sixth on-off switch.

[0009] By adopting the above scheme, when the third power pump and the sixth on-off switch are turned on, the working fluid supply device can replenish fluid to the fluid replenishing device through the fourth fluid pipeline, or the fluid replenishing device can output working fluid to the working fluid supply device.

[0010] Preferably, the second exhaust pipeline is connected to the top of the liquid replenishing device, so that the gas exhausted from the second exhaust pipeline is exhausted through the first exhaust pipeline.

[0011] By adopting the above solution, the liquid storage device can be vented while preventing the liquid inside from splashing.

[0012] Preferably, two second power pumps are provided and connected in parallel with each other, and the second liquid pipeline is also provided with pressure gauges located at both ends of the second power pump.

[0013] With the above solution, the second power pump is used to circulate the working medium in the entire pipeline. During operation, one of the second power pumps is activated and the other is used as a backup.

[0014] Furthermore, the third liquid pipeline is provided with a seventh on-off switch connected in parallel with the third on-off switch, and the third liquid pipeline is also provided with a first filter connected in series with the seventh on-off switch and in parallel with the third on-off switch.

[0015] With the above solution, the seventh on-off switch and the first filter are located in the same branch. When it is necessary to perform acid and water removal maintenance on the working medium, the seventh on-off switch and the first filter can be opened to perform acid and water removal.

[0016] Preferably, the first liquid discharge pipeline and / or the fourth liquid discharge pipeline is provided with a liquid impurity filter.

[0017] By adopting the above solution, the liquid impurity filter of the fourth liquid pipeline can perform primary filtration on the working fluid entering the working fluid supply device.

[0018] Preferably, the first exhaust pipeline is provided with a gas impurity filter.

[0019] By adopting the above scheme, the gas impurity filter can prevent impurities in the external air from entering the pipeline for circulation, thereby preventing blockage.

[0020] Preferably, the second liquid pipeline is further provided with a check valve connected in series with the second power pump.

[0021] By adopting the above solution, the check valve can prevent the working medium from flowing back.

[0022] The present invention also protects a liquid cooling system control method, comprising:

[0023] The filling process of the fluid replenishing device is to fill the working fluid in the working fluid supply device into the fluid replenishing device until the working fluid level is high;

[0024] In the process of filling the liquid storage device, the working fluid in the liquid replenishing device is poured into the liquid storage device until the liquid level is high; in the process of compensating and pressurizing, the liquid cooling system pipeline is pressurized to its high pressure level;

[0025] During the heat exchange operation, all on-off switches except the third on-off switch are closed, the second power pump is turned on, and the working fluid flows through the pipelines among the liquid storage device, the heat exchanger, and the heat source in sequence.

[0026] Further, the perfusion process of the fluid infusion device includes: turning on the sixth on-off switch and the fourth on-off switch, and turning off the remaining on-off switches;

[0027] Starting the third power pump to inject the working fluid from the working fluid supply device into the fluid replenishing device;

[0028] When the detection result of the first liquid level detection device is that the liquid level in the liquid replenishing device is greater than the high level of the liquid in the liquid replenishing device, the third power pump, the sixth on-off switch, and the fourth on-off switch are turned off.

[0029] Furthermore, the liquid storage device filling process includes:

[0030] Turn on all on / off switches except the sixth on / off switch;

[0031] Turning on the first power pump to fill the liquid storage device, and when the working medium liquid level in the liquid storage device is greater than the liquid level high level, turning off the first power pump;

[0032] The second power pump is turned on to exhaust the pipeline, and the second power pump is turned off after time T1;

[0033] After exhaust is completed, turn off all on / off switches.

[0034] Furthermore, the compensating pressurization process includes:

[0035] Turn on all on / off switches except the sixth on / off switch;

[0036] Turn on the first power pump, and turn off the fifth on-off switch after the running time reaches T2;

[0037] When the pressure gauge result is less than the set pressurization pressure of the liquid cooling system pipeline, the first power pump is turned off; and all on-off switches are turned off.

[0038] Furthermore, there are two pressure gauges, and when the difference between the results of the two pressure gauges is greater than the normal pressure difference, the operation is switched to the other second power pump.

[0039] By adopting the above solution, when one of the second power pumps fails, the operation can be switched to the standby second power pump by judging the difference between the results of the two pressure gauges 53 .

[0040] Furthermore, the heat exchange operation process also includes:

[0041] When the result displayed by the pressure gauge is less than the low pressure set for the cold night system pipeline, the first on-off switch and the fourth on-off switch are turned on;

[0042] Turning on the first power pump to pressurize the cooling system pipeline;

[0043] When the result displayed by the pressure gauge is greater than the high pressure set in the cooling night system pipeline, the first power pump is turned off;

[0044] Close the first on-off switch and the fourth on-off switch.

[0045] Further, filling the liquid storage device includes:

[0046] When the working fluid level in the liquid storage device is lower than the high level of the working fluid, and when the working fluid level in the liquid replenishing device is lower than the low level of the working fluid, all on-off switches except the sixth on-off switch and the fourth on-off switch are closed;

[0047] Executing the perfusion process of the fluid infusion device;

[0048] When the filling process of the fluid replenishing device is completed, the filling process of the fluid storage device is continued.

[0049] Furthermore, after the filling process of the liquid storage device and before the compensating pressurization process, the method further includes: when the working fluid level of the liquid replenishing device is less than the middle level of the liquid surface, starting the filling process of the liquid replenishing device.

[0050] By adopting the above solution, it can be ensured that the working fluid in the liquid replenishing device is sufficient to meet the subsequent replenishment of the corresponding liquid storage device.

[0051] Furthermore, the liquid cooling system control method also includes a liquid cooling system working medium discharge process, and the liquid cooling system working medium discharge process includes:

[0052] During the working medium discharge process of the fluid replenishing device, the fourth pipeline is inserted into the working medium supply device, and all on-off switches except the sixth on-off switch and the fourth on-off switch are closed;

[0053] Reversely start the third power pump, and when the working fluid level of the fluid replenishing device is lower than the lower level of the working fluid, shut down the third power pump;

[0054] Close the sixth on-off switch and the fourth on-off switch.

[0055] The working fluid discharge process of the liquid storage device is started when the working fluid discharge process of the liquid replenishing device is completed, specifically including turning on all on-off switches;

[0056] Reversely start the first power pump;

[0057] When the liquid level of the liquid storage device is lower than the lower level of the liquid level, the operation continues for a time T3, and the first power pump is turned off;

[0058] Turn off all on / off switches.

[0059] By adopting the above scheme, when the pipeline system needs to be maintained, the working fluid in the pipeline needs to be discharged. The working fluid in the liquid replenishing device can be discharged first, and then the working fluid in the pipeline and the liquid storage device can be discharged. At the same time, the external gas enters the pipeline system through the first exhaust pipeline and the second exhaust pipeline to balance the air pressure.

[0060] Furthermore, the liquid cooling system working medium discharge process also includes:

[0061] When the liquid level of the liquid storage device is higher than the lower level of the liquid surface and the liquid replenishing device is higher than the upper level of the liquid surface, the first power pump is turned off to stop the process of discharging the working medium of the liquid storage device;

[0062] After the working medium discharge process of the liquid replenishing device is completed, the working medium discharge process of the liquid storage device is restarted.

[0063] Beneficial effects of the present invention:

[0064] 1. The arrangement of the liquid replenishing device, liquid storage device, heat exchanger and the connections therebetween effectively solves the problems of fluid injection,

[0065] The inefficient and unreasonable technical problems in the discharge and replenishment process have produced technical effects that improve work efficiency and facilitate use.

[0066] 2. The provision of the fourth liquid pipeline effectively solves the technical problem of being unable to automatically add liquid to the liquid replenishing device, thereby producing the technical effect of saving manpower and improving work efficiency.

[0067] 3. After the gas exhausted from the second exhaust pipeline is discharged through the first exhaust pipeline, the technical problem of working fluid splashing inside the liquid storage device is solved, and the technical effect of preventing the system from being polluted and extending the service life is achieved.

[0068] 4. The provision of the second power pump and the pressure gauges at both ends solves the technical problem of the failure of the second power pump affecting its use, and produces the technical effect of safe use and improved system stability. Description of the drawings:

[0069] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0070] Figure 1 A schematic diagram of an implementation method of the present invention;

[0071] Figure 2 Schematic diagram of the interior of the liquid storage device of the present invention.

[0072] Description of reference numerals:

[0073] Through the above-mentioned description of the accompanying drawings, combined with the embodiments of the present invention, the technical solution of the present invention can be more clearly understood and explained.

[0074] 1-liquid replenishing device, 2-liquid storage device, 21-bladder, 3-heat exchanger, 31-cold source, 32-heat source, 4-first liquid pipeline, 41-first on-off switch, 42-first power pump, 5-second liquid pipeline, 51-second on-off switch, 52-second power pump, 53-pressure gauge, 54-check valve, 6-third liquid pipeline, 61-third on-off switch, 62-seventh on-off switch, 71-first exhaust pipeline, 711-fourth on-off switch, 72-second exhaust pipeline, 721-fifth on-off switch, 8-fourth liquid pipeline, 81-third power pump, 82-sixth on-off switch, 93-first filter, 91-liquid impurity filter, 92-gas impurity filter. Specific implementation method:

[0075] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0076] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0077] The present invention will be described in detail below through embodiments.

[0078] refer to Figure 1 As shown, the present invention protects a liquid cooling system, including a liquid replenishing device 1, a liquid storage device 2, and a heat exchanger 3. The working fluid outlet of the liquid replenishing device 1 is connected to the liquid storage device 2 through a first liquid pipeline 4, the working fluid outlet of the liquid storage device 2 is connected to the working fluid inlet of the heat exchanger 3 through a second liquid pipeline 5, and the working fluid outlet of the heat exchanger 3 is connected to the working fluid inlet of the liquid storage device 2 through a third liquid pipeline 6; the first liquid pipeline 4 is provided with a first on-off switch 41 and a first power pump 42, and the second liquid pipeline 5 is provided with a first two on-off switches 51, a second power pump 52 connected in parallel with the second on-off switch 51, the third liquid pipeline 6 is provided with a third on-off switch 61, the top of the liquid replenishing device 1 is provided with a first exhaust pipeline 71, the top of the first exhaust pipeline 71 is provided with a fourth on-off switch 711, the liquid storage device 2 is also provided with a second exhaust pipeline 72, and the second exhaust pipeline 72 is provided with a fifth on-off switch 721; the liquid replenishing device 1 and the liquid storage device 2 are respectively provided with a first liquid level detection device and a second liquid level detection device.

[0079] By adopting the above scheme, the refilling device 1 and the liquid storage device 2 can be set into a tank-like structure, the outlet of the liquid storage device 2 can also serve as the inlet of the refilling device 1 entering the liquid storage device 2, the heat exchanger 3 is connected to a cold source 31, and a heat source 32 such as a server that needs to be heat exchanged is set in the third liquid pipeline 6. The on-off switch in the above can use an electromagnetic valve to block and circulate the working fluid or gas in the pipeline. The second power pump 52 can use a high-power centrifugal pump as a working fluid circulation throughout the pipeline to provide power, and the remaining power pumps can use low-power pumps to inject the working fluid. When the power pump is turned on, it has the function of making the working fluid run forward or reverse; because too much gas will cause harm to the pipeline, the first exhaust pipeline 71 and the second exhaust pipeline 72 can effectively discharge the gas in the system pipeline. The first liquid level detection device and the second liquid level detection device are respectively used to detect the position of the internal working fluid liquid level, and a liquid level sensor can be used.

[0080] A working medium compensation device is arranged in the liquid storage device 2, and the working medium compensation device includes a sealed capsule 21, and the capsule 21 is filled with gas. The working medium can be water glycol or fluorinated liquid, etc. When the temperature of the working medium increases, the volume of the working medium will increase, which will squeeze the capsule 21. When the temperature of the working medium decreases, its volume will decrease, and the gas in the capsule 21 will stretch it, so as to compensate the working medium. When in use, the liquid replenishing device 1 can be replenished first, and then the liquid replenishing device 1 can be used to fill the liquid storage device 2. After the filling is completed, the filling channel is closed; when the working medium is in the heat exchange process in the entire pipeline, when the working medium in the pipeline is insufficient, the liquid replenishing device 1 is opened again to fill the liquid storage device 2.

[0081] During the heat exchange process, the working fluid passes through the liquid storage device 2, the second liquid pipeline 5, the heat exchanger 3, the third liquid pipeline 6, and finally returns to the liquid storage device 2, thereby circulating to achieve heat exchange. The liquid cooling system can reasonably and effectively perform liquid replenishment, heat exchange operation, and gas discharge in the pipeline, which is convenient to use, improves work efficiency, and improves system safety.

[0082] refer to Figure 1 As shown, the liquid cooling system further includes a working fluid supply device, which is connected to the liquid replenishing device 1 via a fourth liquid pipeline 8 , and the fourth liquid pipeline 8 is provided with a third power pump 81 and a sixth on-off switch 82 .

[0083] By adopting the above solution, when the third power pump 81 and the sixth on-off switch 82 are turned on, the working fluid supply device can replenish the fluid to the fluid replenishing device 1 through the fourth fluid pipeline 8, or the fluid replenishing device 1 can output the working fluid to the working fluid supply device. When the fluid replenishing device 1 needs to be filled, it can be filled directly from the working fluid supply device without the need for additional manpower to operate repeatedly.

[0084] refer to Figure 1 As shown, the second exhaust pipeline 72 is connected to the top of the liquid replenishing device 1 so that the gas exhausted from the second exhaust pipeline 72 is discharged through the first exhaust pipeline 71 .

[0085] With the above scheme, in actual use, the working fluid level in the liquid storage device 2 is relatively high and usually tends to fill the entire device. Therefore, if the gas is discharged directly from the second exhaust pipe 72, the pressure difference may cause the working fluid in the liquid storage device 2 to spray out, thereby causing pollution. In the liquid replenishing device 1, the working fluid level is usually about two-thirds of the height of the entire device. Therefore, if the second exhaust pipe 72 produces sprayed liquid, it can also flow into the liquid replenishing device 1 first, and there will be no working fluid spraying pollution, thereby effectively maintaining the safety of system use.

[0086] refer to Figure 1As shown, two second power pumps 52 are provided and connected in parallel with each other, and the second liquid pipeline 5 is also provided with pressure gauges 53 located at both ends of the second power pump 52.

[0087] By adopting the above scheme, the second power pump 52 is used to circulate the working fluid in the entire pipeline. During operation, one of the second power pumps 52 is enabled and the other is used as a backup. When the enabled second power pump 52 fails, the pressure gauge 53 located at both ends of the second power pump 52 will produce a pressure difference. When the pressure difference does not meet the normal value, the backup second power pump 52 can be started, thereby enhancing the stability of the system operation.

[0088] refer to Figure 1 As shown, the third liquid pipeline 6 is provided with a seventh on-off switch 62 connected in parallel with the third on-off switch 61 , and the third liquid pipeline 6 is also provided with a first filter 93 connected in series with the seventh on-off switch 62 and in parallel with the third on-off switch 61 .

[0089] By adopting the above scheme, the seventh on-off switch 62 and the first filter 93 are located in the same branch. When it is necessary to remove acid and water from the working fluid, the seventh on-off switch 62 and the first filter 93 can be opened to remove acid and water. During use, since the working fluid flows through the third on-off switch 61 during normal operation, the seventh on-off switch 62 is opened first and then the third on-off switch 61 is closed, and the acid in the working fluid can be adsorbed on the first filter 93.

[0090] refer to Figure 1 As shown, the first liquid discharge pipeline 1 and / or the fourth liquid discharge pipeline 8 is provided with a liquid impurity filter 91 .

[0091] By adopting the above scheme, the liquid impurity filter 91 of the fourth liquid pipeline 8 can perform initial filtration on the working fluid entering the working fluid supply device, and the first liquid pipeline 1 can perform secondary filtration to prevent impurities in the working fluid from circulating in the pipeline, thereby preventing blockage.

[0092] refer to Figure 1 As shown, the first exhaust pipe 71 is provided with a gas impurity filter 92 .

[0093] By adopting the above solution, the gas impurity filter 92 can prevent impurities in the external air from entering the pipeline for circulation, thereby preventing blockage.

[0094] refer to Figure 1 As shown, the second liquid pipeline 5 is also provided with a check valve 54 connected in series with the second power pump 52 .

[0095] By adopting the above solution, the check valve 54 can prevent the working medium from flowing back.

[0096] The present invention also protects a liquid cooling system control method, comprising:

[0097] The filling process of the fluid replenishing device is to fill the working fluid in the working fluid supply device into the fluid replenishing device 1 to the high level of the liquid;

[0098] In the process of filling the liquid storage device, the working fluid in the liquid replenishing device 1 is poured into the liquid storage device 2 until the liquid level is at a high level; in the process of compensating for pressurization, the liquid cooling system pipeline is pressurized to a high pressure level;

[0099] During the heat exchange operation, all the on-off switches except the third on-off switch 61 are closed, the second power pump 52 is turned on, and the working medium flows through the pipelines between the liquid storage device 2, the heat exchanger 3, and the heat source in sequence.

[0100] With the above scheme, the high level of the liquid is the highest level reached by the working fluid level set by the liquid replenishment device 1 or the liquid storage device 2. When the high level of the liquid is exceeded, the filling into the device is stopped. The high level of the liquid can be measured by the first liquid level detection device and the second liquid level detection device respectively. A working fluid compensation device is provided inside the liquid storage device 2. When the system pipeline is pressurized, the capsule 21 in the working fluid compensation device is compressed to produce a certain deformation, which is used to compensate when the working fluid is heated and cooled during the heat exchange operation. During the heat exchange operation, the heat source 32 is provided in the third pipeline 6. The heat source can be a server. When the server runs for too long, it will emit heat. At this time, the working fluid flowing out of the heat exchanger 3 can cool the heat source. The working fluid with increased temperature flows into the heat exchanger 3 through the liquid storage device 2. The heat exchanger 3 cools the heated working fluid again under the action of the cold source 31, and cools the server again.

[0101] refer to Figure 1 As shown, the perfusion process of the fluid infusion device includes: turning on the sixth on-off switch 82 and the fourth on-off switch 711, and turning off the remaining on-off switches;

[0102] Starting the third power pump 81 to inject the working medium from the working medium supply device into the liquid replenishing device 1;

[0103] When the detection result of the first liquid level detection device is that the liquid level in the liquid replenishing device 1 is greater than the high level of the liquid in the liquid replenishing device, the third power pump 81, the sixth on-off switch 82, and the fourth on-off switch 711 are turned off.

[0104] By adopting the above solution, turning on the sixth on-off switch 82 and the third power pump 81 can supply the working fluid to the device.

[0105] The working fluid in the device is injected into the fluid replenishing device 1. During the rising process of the working fluid inside the fluid replenishing device 1, when the fourth on-off switch 711 is turned on, the gas will be discharged to the outside through the first exhaust pipe 71. The first liquid level detection device can detect whether the liquid level in the fluid replenishing device 1 is greater than the high level of the liquid surface of the fluid replenishing device. When it is greater, the fluid replenishment of the fluid replenishing device 1 is completed.

[0106] refer to Figure 1 As shown, the liquid storage device perfusion process includes:

[0107] Turn on all on-off switches except the sixth on-off switch 82;

[0108] Turn on the first power pump 42 to fill the liquid storage device 2. When the liquid level of the working medium in the liquid storage device 2 is greater than the liquid level high level, turn off the first power pump 42;

[0109] The second power pump 52 is turned on to exhaust the pipeline, and the second power pump 52 is turned off after a time T1 has passed;

[0110] After exhaust is completed, turn off all on / off switches.

[0111] By adopting the above scheme, all on-off switches except the sixth on-off switch 82 are turned on to ensure that there is no blind cavity in the pipeline. Under the action of the first power pump 42, the working fluid will be infused from the fluid replenishing device 1 into the liquid storage device 2. At this time, the second liquid level detection device will detect the working fluid level in the liquid storage device 2. When the working fluid level in the liquid storage device 2 is greater than its liquid high level, the infusion is stopped, and then the second power pump 52 is turned on for exhaust. The T1 time can be set to 3 minutes to allow the gas in the pipeline to be fully discharged.

[0112] refer to Figure 1 As shown, the compensation pressurization process includes:

[0113] Turn on all on-off switches except the sixth on-off switch 82;

[0114] Turn on the first power pump 42, and turn off the fifth on-off switch 721 after the running time reaches T2;

[0115] When the result of the pressure gauge 53 is less than the set pressurization pressure of the liquid cooling system pipeline, the first power pump 42 is turned off; and all on-off switches are turned off.

[0116] By adopting the above scheme, during the compensation pressurization process, the bladder 21 in the liquid storage device 2 will be compressed under the squeeze of the working fluid, and when the result of the pressure gauge 53 is less than the set pressurization pressure of the liquid cooling system pipeline, the compensation pressurization is completed; at this time, since the bladder 21 is in an intermediate length state, it provides compensation conditions for the subsequent increase or decrease in the working fluid volume due to the temperature increase or decrease of the working fluid.

[0117] refer to Figure 1 As shown, two pressure gauges 53 are provided. When the difference between the results of the two pressure gauges 53 is greater than the normal pressure difference, the operation is switched to the other second power pump.

[0118] By adopting the above solution, when one of the second power pumps fails, the operation can be switched to the standby second power pump by judging the difference between the results of the two pressure gauges 53 .

[0119] refer to Figure 1 As shown, the heat exchange operation process also includes:

[0120] When the result displayed by the pressure gauge 53 is less than the low pressure set for the cold night system pipeline, the first on-off switch 41 and the fourth on-off switch 711 are turned on;

[0121] Turning on the first power pump 42 to pressurize the cooling night system pipeline;

[0122] When the result displayed by the pressure gauge 53 is greater than the high pressure set in the cooling night system pipeline, the first power pump 42 is turned off;

[0123] The first on-off switch 41 and the fourth on-off switch 711 are turned off.

[0124] When the above scheme is adopted, when the result displayed by the pressure gauge 53 is less than the low pressure set for the cold night system pipeline, it indicates that the system pipeline pressure is insufficient. In this case, the liquid replenishing device 1 needs to inject the working fluid into the liquid storage device 2 to increase the pressure to meet the operating pressure.

[0125] refer to Figure 1 As shown, filling the liquid storage device 2 includes:

[0126] When the liquid level of the working fluid in the liquid storage device 2 is lower than the high level thereof and the liquid level of the working fluid in the liquid replenishing device 1 is lower than the low level thereof, all on-off switches except the sixth on-off switch 82 and the fourth on-off switch 711 are closed; and the filling process of the liquid replenishing device is executed;

[0127] When the filling process of the fluid replenishing device is completed, the filling process of the fluid storage device is continued.

[0128] When the above scheme is adopted, when the liquid storage device 2 lacks too much liquid, the working fluid in the liquid replenishing device 1 will be insufficient to meet the filling requirement of the liquid storage device 2. In this case, the filling of the liquid storage device 2 is stopped and the filling of the liquid replenishing device 1 is started. After the filling of the liquid replenishing device 1 is completed, the liquid storage device 2 is filled again.

[0129] refer to Figure 1As shown, after the filling process of the liquid storage device and before the compensating pressurization process, it also includes: when the working medium liquid level of the liquid replenishing device 1 is less than the middle level of the liquid surface, starting the filling process of the liquid replenishing device.

[0130] By adopting the above solution, it can be ensured that the working fluid in the liquid replenishing device 1 is sufficient to meet the subsequent replenishment of the corresponding liquid storage device 2.

[0131] refer to Figure 1 As shown, the liquid cooling system control method also includes a liquid cooling system working medium discharge process, and the liquid cooling system working medium discharge process includes:

[0132] During the working medium discharge process of the fluid replenishing device, the fourth pipeline 8 is inserted into the working medium supply device, and all on-off switches except the sixth on-off switch 82 and the fourth on-off switch 711 are closed;

[0133] Reversely start the third power pump 81, and when the liquid level of the working medium in the liquid replenishing device 1 is lower than the lower level of the liquid level, shut down the third power pump 81;

[0134] The sixth on-off switch 82 and the fourth on-off switch 711 are turned off.

[0135] The working fluid discharge process of the liquid storage device is started when the working fluid discharge process of the liquid replenishing device is completed, specifically including turning on all on-off switches;

[0136] Reversely start the first power pump 42;

[0137] When the liquid level of the liquid storage device 2 is lower than the lower level, the operation continues for time T3, the first power pump 42 is turned off, and all on-off switches are turned off.

[0138] With the above solution, when the pipeline system needs to be repaired, the working fluid in the pipeline needs to be discharged. The working fluid in the liquid replenishing device 1 can be discharged first, and then the working fluid in the pipeline and the liquid storage device 2 can be discharged. At the same time, the external gas enters the pipeline system through the first exhaust pipeline 71 and the second exhaust pipeline 72 to balance the air pressure. Figure 1 As shown, the liquid cooling system working medium discharge process also includes:

[0139] When the liquid level of the liquid storage device 2 is higher than the lower level of the liquid level and the liquid replenishing device 1 is higher than the upper level of the liquid level, the first power pump 42 is turned off to stop the process of discharging the working fluid of the liquid storage device;

[0140] After the liquid discharging process of the liquid replenishing device is completed, the liquid discharging process of the liquid storage device is restarted. With the above scheme, when the liquid level of the liquid storage device 2 is higher than the lower level of the liquid level and the liquid level of the liquid replenishing device 1 is higher than the upper level of the liquid level, there will be too much liquid in the liquid replenishing device 1, causing external spraying, so at this time, the discharge of the liquid storage device 2 is first stopped, and after the liquid level of the liquid replenishing device 1 reaches the requirement, the liquid in the liquid storage device 2 is discharged again through the liquid replenishing device 1.

[0141] The liquid cooling system control method can be controlled by software. The operator only needs to use one-key control before the liquid replenishment device filling process, the liquid storage device filling process, the compensation pressurization process, the heat exchange operation process, and the working fluid discharge process to complete the execution of each process, saving manpower and time, improving work efficiency, and can also perform intelligent control when the system is abnormal or requires maintenance.

[0142] It should be pointed out that, for those skilled in the art, several improvements and modifications may be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A liquid cooling system control method, characterized in that: include: Liquid cooling system: The liquid cooling system comprises a liquid replenishing device (1), a liquid storage device (2), and a heat exchanger (3); the working fluid outlet of the liquid replenishing device (1) is connected to the liquid storage device (2) via a first liquid pipeline (4); the working fluid outlet of the liquid storage device (2) is connected to the working fluid inlet of the heat exchanger (3) via a second liquid pipeline (5); the working fluid outlet of the heat exchanger (3) is connected to the working fluid inlet of the liquid storage device (2) via a third liquid pipeline (6); the first liquid pipeline (4) is provided with a first on-off switch (41) and a first power pump (42); the second liquid pipeline (5) is provided with a second on-off switch (41) and a first power pump (42); an on-off switch (51), a second power pump (52) connected in parallel with the second on-off switch (51), the third liquid delivery pipeline (6) is provided with a third on-off switch (61), the top of the liquid replenishing device (1) is provided with a first exhaust pipeline (71), the first exhaust pipeline (71) is provided with a fourth on-off switch (711), the top of the liquid storage device (2) is further provided with a second exhaust pipeline (72), the second exhaust pipeline (72) is provided with a fifth on-off switch (721); the liquid replenishing device (1) and the liquid storage device (2) are respectively provided with a first liquid level detection device and a second liquid level detection device; The liquid cooling system further comprises a working fluid supply device, the working fluid supply device being connected to the liquid replenishing device (1) via a fourth liquid pipeline (8), and the fourth liquid pipeline (8) being provided with a third power pump (81) and a sixth on-off switch (82); The second exhaust pipeline (72) is connected to the top of the liquid replenishing device (1), so that the gas exhausted from the second exhaust pipeline (72) is exhausted through the first exhaust pipeline (71); The second power pumps (52) are provided with two and are connected in parallel with each other, and the second liquid pipeline (5) is also provided with pressure gauges (53) located at both ends of the second power pumps (52); The third liquid discharge pipeline (6) is provided with a seventh on-off switch (62) connected in parallel with the third on-off switch (61), and the third liquid discharge pipeline (6) is further provided with a first filter (93) connected in series with the seventh on-off switch (62) and in parallel with the third on-off switch (61); Control methods: Control methods include During the filling process of the liquid replenishing device, the working fluid in the working fluid supply device is filled into the liquid replenishing device (1) until the liquid level thereof reaches a high level; during the filling process of the liquid storage device, the working fluid in the liquid replenishing device (1) is filled into the liquid storage device (2) until the liquid level thereof reaches a high level; During the compensating pressurization process, the liquid cooling system pipeline is pressurized to its high pressure level; During the heat exchange operation, all on-off switches except the third on-off switch (61) are closed, the second power pump (52) is turned on, and the working fluid flows through the pipelines between the liquid storage device (2), the heat exchanger (3), and the heat source (32) in sequence.

2. The liquid cooling system control method according to claim 1, characterized in that: The perfusion process of the fluid infusion device includes: turning on the sixth on-off switch (82) and the fourth on-off switch (711); Starting the third power pump (81) to inject the working fluid from the working fluid supply device into the fluid replenishing device (1); When the detection result of the first liquid level detection device is that the liquid level in the liquid replenishing device (1) is greater than the liquid level high level of the liquid replenishing device, the third power pump (81), the sixth on-off switch (82), and the fourth on-off switch (711) are turned off.

3. The liquid cooling system control method according to claim 2, characterized in that: The liquid storage device filling process includes: turning on all on-off switches except the sixth on-off switch (82); Turning on the first power pump (42) to fill the liquid storage device (2), and when the working fluid level in the liquid storage device (2) is greater than the liquid level high level, turning off the first power pump (42); The second power pump (52) is turned on to exhaust the pipeline, and after a time T1 has passed, the second power pump (52) is turned off; after the exhaust is completed, all on-off switches are turned off.

4. The liquid cooling system control method according to claim 3, characterized in that: The compensation pressurization process includes: Turning on all on-off switches except the sixth on-off switch (82); Turning on the first power pump (42), and turning off the fifth on-off switch (721) after the running time reaches T2; When the result of the pressure gauge (53) is greater than the set pressurization pressure of the liquid cooling system pipeline, the first power pump (42) is turned off; and all on-off switches are turned off.

5. The liquid cooling system control method according to any one of claims 1 to 4, characterized in that: The heat exchange operation process also includes: When the result displayed by the pressure gauge (53) is less than the low pressure set in the pipeline of the liquid cooling system, the first on-off switch (41) and the fourth on-off switch (711) are turned on; Turning on the first power pump (42) to pressurize the liquid cooling system pipeline; When the result displayed by the pressure gauge (53) is greater than the high pressure set in the pipeline of the liquid cooling system, the first power pump (42) is turned off; The first on-off switch (41) and the fourth on-off switch (711) are turned off.

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