Liquid injection system, method, non-transitory storage medium for liquid cooling system

Abstract

The application discloses a liquid injection device and system of a liquid cooling system, a method and a nonvolatile storage medium. The device comprises a first fluid machine, a second fluid machine, a first liquid storage device and a second liquid storage device. The first fluid machine is connected with the first liquid storage device and a liquid suction port of the liquid injection device of the liquid cooling system and is used for performing a positive pressure air tightness test. The second fluid machine is connected with the first liquid storage device and the liquid suction port and is used for performing a negative pressure air tightness test. The second liquid storage device is connected with a liquid inlet of the liquid injection device of the liquid cooling system and a liquid outlet of the liquid injection device of the liquid cooling system respectively and is used for performing a liquid injection operation. The first fluid machine is further used for performing a liquid discharge operation. The second liquid storage device is further used for performing a liquid suction operation and self-circulation cleaning of the second liquid storage device. The application solves the technical problem of low liquid injection efficiency caused by the fact that air tightness test, liquid injection, liquid discharge, liquid suction and cleaning cannot be integrated.

Description

Technical Field

[0001] This application relates to the field of liquid cooling system injection technology, and more specifically, to a liquid cooling system injection device, system, method, and non-volatile storage medium. Background Technology

[0002] In recent years, refrigeration systems have gradually shifted from air-cooled to liquid-cooled systems, experiencing rapid development. Liquid-cooled systems are gradually replacing air-cooled products as the mainstream in the market. After product integration, liquid-cooled systems require leak testing and liquid filling testing of the liquid cooling piping at the factory to eliminate the risk of leakage and ensure the sealing and safety of the liquid cooling system piping. Therefore, leak testing and liquid filling of the liquid cooling piping system are necessary.

[0003] However, various problems often arise during the process of injecting liquid into the liquid cooling system. For example, the energy storage system uses different ethylene glycol and propylene glycol as coolants. Due to differences in brands and additives, switching between different types of liquids is difficult. Cleaning and changing the liquid in the injection device takes a lot of time. There are also various methods of draining, such as pumping and natural pressure relief. However, these methods take a long time and may result in incomplete drainage.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a liquid injection device, system, method, and non-volatile storage medium for a liquid cooling system, to at least solve the technical problem of low injection efficiency caused by the inability to integrate airtightness testing, injection, drainage, pumping, and cleaning.

[0006] According to one aspect of the embodiments of this application, a liquid injection device for a liquid cooling system is provided, comprising: a first fluid machine connected to a first liquid storage device and a liquid extraction port of the liquid injection device of the liquid cooling system, for performing a positive pressure airtightness test; a second fluid machine connected to the first liquid storage device and the liquid extraction port, for performing a negative pressure airtightness test; a second liquid storage device connected to the liquid inlet and the liquid outlet of the liquid injection device of the liquid cooling system, respectively, for performing a liquid injection operation; the first fluid machine, connected to the liquid inlet via the first and second liquid storage devices, is also used for performing a liquid drainage operation; the second liquid storage device is also connected to the liquid extraction port and the liquid outlet, respectively, for performing a liquid extraction operation; and the second liquid storage device is also used for self-circulating cleaning of the second liquid storage device.

[0007] Optionally, the first fluid machine is connected to the liquid extraction port via a first passage through a first liquid storage device; the second fluid machine is connected to the liquid extraction port via a second passage through the first liquid storage device; the liquid inlet is connected to the liquid outlet via a third passage through the second liquid storage device; the first fluid machine is also connected to the liquid inlet via a fourth passage through the first and second liquid storage devices; the liquid extraction port is connected to the liquid outlet via a fifth passage through the second liquid storage device; and the second liquid storage device is connected to the second liquid storage device via a sixth passage through the liquid inlet.

[0008] Optionally, the first passage includes: a first sub-passage and a second sub-passage; the second passage includes: a third sub-passage, a second sub-passage, and a fourth sub-passage; the third passage includes: a fifth sub-passage, a sixth sub-passage, and a seventh sub-passage; the fourth passage includes: a sixth sub-passage, a fourth sub-passage, a first sub-passage, and a third sub-passage; the fifth passage includes: a seventh sub-passage and an eighth sub-passage; and the sixth passage includes: a fifth sub-passage and a sixth sub-passage. The first sub-passage is used to connect the first fluid machinery and the first liquid storage device; the second sub-passage is used to connect the first liquid storage device and the extraction port; the third sub-passage is used to connect the second fluid machinery and the first liquid storage device; the fourth sub-passage is used to connect the first liquid storage device and the second liquid storage device; and the fifth sub-passage is used to connect the inlet and the first liquid storage device. The fifth sub-passage includes: a tenth solenoid valve; the sixth sub-passage is used to connect the second liquid storage device and the tenth solenoid valve; the seventh sub-passage is used to connect the second liquid storage device and the outlet; and the eighth sub-passage is used to connect the first liquid storage device and the extraction port.

[0009] Optionally, the first sub-passage includes: a pressure reducing valve, a first solenoid valve, a first filter, and a drying filter, wherein a first fluid machinery is connected to the pressure reducing valve, the first solenoid valve, the first filter, and the drying filter, wherein the first fluid machinery is used to compress gas, the pressure reducing valve is used to reduce the pressure in the first sub-passage, the first solenoid valve is used to open or close the first sub-passage, the first filter is used to filter suspensions with pressure differentials within a first target range, and the drying filter is used to dry and filter the gas.

[0010] Optionally, the third sub-passage includes: a first solenoid valve, a first filter, and a dryer filter, wherein a second fluid mechanism is connected to the first solenoid valve, the first filter, and the dryer filter, wherein the second fluid mechanism is used to create a low-pressure or vacuum environment.

[0011] Optionally, the second sub-passage includes: a second solenoid valve, a third solenoid valve, a second pressure sensor, and a second filter, wherein the first liquid storage device is connected to the second solenoid valve, the third solenoid valve, the second pressure sensor, and the second filter, wherein the first liquid storage device is used to store liquid, the second and third solenoid valves are used to open or close the second sub-passage, the second pressure sensor is used to measure the pressure of the fluid in the second sub-passage, and the second filter is used to filter suspensions with pressure differentials within a second target range.

[0012] Optionally, the fourth sub-passage includes a second solenoid valve and a fourth solenoid valve, wherein the first liquid storage device is connected to the second solenoid valve, the fourth solenoid valve and the second liquid storage device, wherein the second liquid storage device is used to store liquid, and the second solenoid valve and the fourth solenoid valve are used to open or close the fourth sub-passage.

[0013] Optionally, the fifth sub-passage further includes a third fluid mechanism and a sixth solenoid valve, wherein the inlet is connected to a tenth solenoid valve, the third fluid mechanism, and the sixth solenoid valve, wherein the third fluid mechanism is used to deliver liquid, and the tenth and sixth solenoid valves are used to open or close the fifth sub-passage.

[0014] Optionally, the sixth sub-passage includes an eighth solenoid valve, wherein a tenth solenoid valve is connected to the eighth solenoid valve and the second liquid storage device, wherein the eighth solenoid valve is used to open or close the sixth sub-passage.

[0015] Optionally, the seventh sub-passage includes: a seventh solenoid valve, a fourth pressure sensor, and a third filter, wherein the second liquid storage device is connected to the seventh solenoid valve, the fourth pressure sensor, the third filter, and the liquid outlet, wherein the seventh solenoid valve is used to open or close the seventh sub-passage, the fourth pressure sensor is used to measure the pressure of the fluid in the seventh sub-passage, and the third filter is used to filter suspensions with pressure differentials within a third target range.

[0016] Optionally, the eighth sub-passage includes: a fourth solenoid valve, a third solenoid valve, a second pressure sensor, and a second filter, wherein the second liquid storage device is connected to the fourth solenoid valve, the third solenoid valve, the second pressure sensor, the second filter, and the liquid extraction port, wherein the fourth solenoid valve and the third solenoid valve are used to open or close the eighth sub-passage, the second pressure sensor is used to measure the pressure of the fluid in the eighth sub-passage, and the second filter is used to filter suspensions with pressure differentials within the fourth target range.

[0017] Optionally, the first liquid storage device is also connected to a first level gauge, a ninth solenoid valve, a fifth solenoid valve, and a first pressure sensor. The first level gauge is used to measure the liquid level in the first liquid storage device; the ninth solenoid valve is connected to the first pressure relief port of the first liquid storage device and is used to open or close the first pressure relief port; the fifth solenoid valve is connected to the liquid drain port of the first liquid storage device and is used to open or close the liquid drain port; and the first pressure sensor is used to measure the pressure of the liquid in the first liquid storage device.

[0018] Optionally, the second liquid storage device is also connected to a second level gauge, an eleventh solenoid valve, and a third pressure sensor. The second level gauge is used to measure the liquid level in the second liquid storage device; the eleventh solenoid valve is connected to the second pressure relief port of the second liquid storage device and is used to open or close the second pressure relief port; and the third pressure sensor is used to measure the pressure of the liquid in the second liquid storage device.

[0019] Optionally, the liquid injection device of the liquid cooling system further includes: a control unit and a human-machine interface device, wherein the control unit is connected to all solenoid valves, all level gauges, all pressure sensors, the first fluid machinery, the second fluid machinery, and the third fluid machinery in the liquid injection device of the liquid cooling system, and is used to control all solenoid valves, all level gauges, all pressure sensors, the first fluid machinery, the second fluid machinery, and the third fluid machinery; the human-machine interface device is connected to the control unit and is used to set parameters corresponding to positive pressure airtightness test, negative pressure airtightness test, liquid injection operation, liquid drainage operation, liquid pumping operation, and self-circulation cleaning, wherein the parameters include at least one of the following: test pressure, test flow rate, test time, test pressure stabilization time, and pressure relief time.

[0020] According to another aspect of the embodiments of this application, a liquid injection system for a liquid cooling system is also provided, comprising: a liquid supply device, a liquid cooling system, and a liquid injection device for the liquid cooling system, wherein the liquid injection device for the liquid cooling system is connected to the liquid supply device and the liquid cooling system respectively, and is used to obtain liquid from the liquid supply device, process the liquid in the liquid supply device, and deliver the processed liquid to the liquid cooling system; the liquid supply device is used to provide liquid to the liquid injection device for the liquid cooling system; and the liquid cooling system is used to receive the processed liquid delivered by the liquid injection device for the liquid cooling system.

[0021] According to another aspect of the embodiments of this application, a liquid injection method for a liquid cooling system is also provided, applied to a liquid injection device of a liquid cooling system, comprising: sequentially performing a positive pressure airtightness test and a negative pressure airtightness test on the liquid injection device of the liquid cooling system; after the negative pressure airtightness test is passed, receiving liquid provided by a liquid supply device and delivering the liquid provided by the liquid supply device to the liquid cooling system; after delivering the liquid provided by the liquid supply device to the liquid cooling system, discharging the target liquid in the liquid injection device of the liquid cooling system, wherein the target liquid includes at least one of the following: residual liquid and liquid containing impurities.

[0022] Optionally, delivering the liquid supplied by the liquid supply device to the liquid cooling system includes: when the pressure in the liquid injection device of the liquid cooling system is less than a preset pressure value, using the pressure difference between the liquid injection device and the liquid supply device of the liquid cooling system to obtain liquid from the liquid supply device until the liquid in the second liquid storage device reaches a first preset volume, wherein the first preset pressure value is less than the pressure of the liquid in the liquid supply device; when the liquid in the second liquid storage device reaches the first preset volume, using a third fluid machinery to obtain liquid from the liquid supply device until the liquid in the second liquid storage device reaches a second preset volume, and delivering the second preset volume of liquid to the liquid cooling system.

[0023] According to another aspect of the embodiments of this application, a non-volatile storage medium is also provided, the storage medium including a stored program, wherein the program, when running, controls the device where the storage medium is located to execute the liquid injection device of the above-mentioned liquid cooling system.

[0024] In this embodiment, a first fluid machine is used, connected to the first liquid storage device and the liquid injection device of the liquid cooling system, for positive pressure airtightness testing; a second fluid machine is connected to the first liquid storage device and the liquid injection device, for negative pressure airtightness testing; the second liquid storage device is connected to the inlet and outlet of the liquid injection device of the liquid cooling system, respectively, for liquid injection operation; the first fluid machine, connected to the inlet via the first and second liquid storage devices, is also used for liquid drainage operation; the second liquid storage device is also connected to the liquid injection port and the liquid outlet, respectively, for liquid drainage operation; the second liquid storage device is also used for self-circulation cleaning of the second liquid storage device. Through the first fluid machine, the second fluid machine, the first liquid storage device, and the second liquid storage device, the airtightness testing, liquid injection, liquid drainage, liquid drainage, and cleaning are integrated, thereby improving the liquid injection efficiency and solving the technical problem of low liquid injection efficiency caused by the inability to integrate airtightness testing, liquid injection, liquid drainage, liquid drainage, and cleaning. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a structural diagram of a liquid injection device for a liquid cooling system according to an embodiment of this application;

[0027] Figure 2 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0028] Figure 3This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0029] Figure 4 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0030] Figure 5 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0031] Figure 6 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0032] Figure 7 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0033] Figure 8 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0034] Figure 9 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0035] Figure 10 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0036] Figure 11 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0037] Figure 12 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0038] Figure 13 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0039] Figure 14 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application;

[0040] Figure 15 This is a structural diagram of the liquid injection system of a liquid cooling system according to an embodiment of this application;

[0041] Figure 16 This is a flowchart of a liquid injection method for a liquid cooling system according to an embodiment of this application. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] Figure 1 This is a structural diagram of a liquid injection device for a liquid cooling system according to an embodiment of this application, as shown below. Figure 1 As shown, the device includes: a first fluid machine 1, a second fluid machine 2, a first liquid storage device 3, and a second liquid storage device 4, wherein,

[0045] The first fluid machine 1 is connected to the liquid injection port of the first liquid storage device 3 and the liquid cooling system's liquid injection device, and is used to perform positive pressure airtightness testing.

[0046] The second fluid machine 2 is connected to the first liquid storage device 3 and the liquid extraction port, and is used to perform negative pressure airtightness test;

[0047] The second liquid storage device 4 is connected to the liquid inlet and the liquid outlet of the liquid cooling system's liquid injection device, respectively, for liquid injection operation.

[0048] The first fluid machine 1 is connected to the inlet via the first liquid storage device 3 and the second liquid storage device 4, and is also used for liquid discharge operation;

[0049] The second liquid storage device 4 is also connected to the liquid extraction port and the liquid outlet respectively, for performing liquid extraction operations.

[0050] The second liquid storage device 4 is also used for self-circulation cleaning of the second liquid storage device 4.

[0051] According to an optional embodiment of this application, fluid machinery is machinery that uses fluid as its working medium and is capable of converting different forms of energy, such as fluid pressure, kinetic energy, and potential energy, into useful work. For example, the first fluid machinery 1 is an air pump, and the second fluid machinery 2 is a vacuum pump. An air pump is a device used to compress, draw in, or expel air or other gases, while a vacuum pump is a device used to remove gas molecules from a closed container or system to create a low-pressure or vacuum environment.

[0052] The liquid injection operation involves injecting coolant from the supply device into the liquid cooling system's injection device, and then injecting coolant from the liquid cooling system's injection device into the liquid cooling system. The liquid cooling system's injection device undergoes positive pressure and negative pressure airtightness tests sequentially. After passing the negative pressure airtightness test, the liquid supplied by the supply device is received through the pressure difference between the injection device and the supply device, as well as other fluid machinery. Specifically, when the pressure in the liquid cooling system's injection device is lower than a preset pressure value, liquid is obtained from the supply device using the pressure difference between the injection device and the supply device (i.e., static injection) until the liquid in the second storage device 4 reaches a first preset volume, where the first preset pressure value is lower than the pressure of the liquid in the supply device. When the liquid in the second storage device 4 reaches the first preset volume, liquid is obtained from the supply device using a third fluid machinery 15 until the liquid in the second storage device 4 reaches a second preset volume (i.e., dynamic injection), and the second preset volume of liquid is then delivered to the liquid cooling system.

[0053] After the liquid receiving device of the liquid cooling system injects the received liquid into the liquid cooling system, it drains the second liquid storage device 4. The gas pump pressurizes the passage and discharges the liquid in the second liquid storage device 4 to the liquid supply device. The first liquid storage device 3 is also vented. After the first liquid storage device 3 completes the venting operation, the passage is evacuated by a vacuum pump.

[0054] After the passage is evacuated by the vacuum pump, the passage between the first liquid storage device 3 and the second liquid storage device 4 is closed. The residual liquid in the passage between the liquid cooling system's injection device and the liquid cooling system is recovered to the second liquid storage device 4 by utilizing the pressure difference between the liquid cooling system's injection device and the liquid cooling system. At this time, the residual liquid in the passage of the liquid cooling system's injection device is discharged, and the liquid injection operation of the liquid cooling system is completed.

[0055] After completing the liquid injection operation of the liquid cooling system, close all passages except the passage between the liquid supply device and the second liquid storage device 4, replace the coolant in the liquid supply device with cleaning water, or replace the liquid supply device with another one, so as to achieve self-circulation cleaning of the second liquid storage device 4.

[0056] According to the above-mentioned device, by means of the first fluid machinery 1, the second fluid machinery 2, the first liquid storage device 3 and the second liquid storage device 4, the purpose of integrating airtightness testing, liquid injection, liquid drainage, liquid extraction and cleaning is achieved, thereby realizing the technical effect of improving liquid injection efficiency.

[0057] In addition, the above-mentioned device also has the following beneficial effects:

[0058] 1. The entire process of leakage testing and liquid injection is integrated into one, that is, the liquid injection is carried out only after the liquid injection condition is identified first, and the entire liquid injection is completed with one click.

[0059] 2. It integrates positive / negative airtightness testing and liquid extraction / drainage capabilities, enabling negative pressure liquid injection and negative pressure liquid extraction. It also has a large-capacity air pressure liquid drainage capability, which allows for rapid liquid drainage, improving drainage speed and cleanliness.

[0060] 3. By deploying the first liquid storage device 3 and the second liquid storage device 4, liquid backflow in the passage is avoided during the vacuum liquid injection process, which would affect the normal operation of the vacuum pump; in addition, the first liquid storage device 3 is also used for constant pressure regulation and air filtration, increasing the air filtration capacity during the liquid injection process.

[0061] 4. Improve the treatment of air impurities and reduce the amount of air bubbles in the liquid by using static and dynamic liquid injection;

[0062] 5. The liquid extraction function can reduce the leakage problem that occurs when the external connection is removed after the liquid injection is completed;

[0063] 6. By processing the positive and negative air pressure inside the device, the liquid injection passage is cleaned as a whole to ensure the rapid switching of various coolants.

[0064] Figure 2 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 2 As shown,

[0065] The first fluid machine 1 is connected to the liquid extraction port via the first liquid storage device 3 through the first passage 100;

[0066] The second fluid machine 2 is connected to the liquid extraction port via the first liquid storage device 3 through the second passage 200;

[0067] The liquid inlet is connected to the liquid outlet via the second liquid storage device 4 through the third passage 300;

[0068] The first fluid machine 1 is also connected to the inlet via the first liquid storage device 3 and the second liquid storage device 4 through the fourth passage 400;

[0069] The liquid extraction port is connected to the liquid outlet via the second liquid storage device 4 through the fifth passage 500;

[0070] The second liquid storage device 4 is connected to the second liquid storage device 4 via the inlet through the sixth passage 600.

[0071] According to an optional embodiment of this application, an air pump is connected to a liquid extraction port via a first liquid storage device 3 through a first passage 100 for positive pressure testing; a vacuum pump is connected to a liquid extraction port via a second passage 200 through the first liquid storage device 3 for negative pressure testing.

[0072] The inlet is connected to the outlet via the second liquid storage device 4 through the third passage 300, and is used to inject the liquid supplied by the liquid supply device into the liquid cooling system; the first fluid machinery 1 is connected to the inlet via the first liquid storage device 3 and the second liquid storage device 4 through the fourth passage 400, and is used to discharge the residual liquid in the first liquid storage device 3 and the second liquid storage device 4; the extraction port is connected to the outlet via the second liquid storage device 4 through the fifth passage 500, and is used to discharge the residual liquid in the liquid cooling system's injection device and the passage of the liquid cooling system; the second liquid storage device 4 is connected to the inlet via the sixth passage 600, and is used to perform self-circulation cleaning of the second liquid storage device 4 to ensure rapid switching between various coolants.

[0073] Figure 3 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 3 As shown, the first pathway 100 includes: a first sub-pathway 1001 and a second sub-pathway 1002; the second pathway 200 includes: a third sub-pathway 1003, a second sub-pathway 1002, and a fourth sub-pathway 1004; the third pathway 300 includes: a fifth sub-pathway 1005, a sixth sub-pathway 1006, and a seventh sub-pathway 1007; the fourth pathway 400 includes: a sixth sub-pathway 1006, a fourth sub-pathway 1004, a first sub-pathway 1001, and a third sub-pathway 1003; the fifth pathway 500 includes: a seventh sub-pathway 1007 and an eighth sub-pathway 1008; and the sixth pathway 600 includes: a fifth sub-pathway 1005 and a sixth sub-pathway 1006.

[0074] The first sub-channel 1001 is used to connect the first fluid machinery 1 and the first liquid storage device 3;

[0075] The second sub-channel 1002 is used to connect the first liquid storage device 3 to the liquid extraction port;

[0076] The third sub-channel 1003 is used to connect the second fluid machinery 2 and the first liquid storage device 3;

[0077] The fourth sub-channel 1004 is used to connect the first liquid storage device 3 and the second liquid storage device 4;

[0078] The fifth sub-passage 1005 is used to connect the liquid inlet to the first liquid storage device 3, wherein the fifth sub-passage 1005 includes: the tenth solenoid valve 14;

[0079] The sixth sub-channel 1006 is used to connect the second liquid storage device 4 and the tenth solenoid valve 14;

[0080] The seventh sub-channel 1007 is used to connect the second liquid storage device 4 to the liquid outlet;

[0081] The eighth sub-channel 1008 is used to connect the first liquid storage device 3 to the liquid extraction port.

[0082] Figure 4 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 4 As shown, the first sub-passage 1001 includes: a pressure reducing valve 5, a first solenoid valve 6, a first filter 7, and a drying filter 8, wherein,

[0083] The first fluid machine 1 is connected to the pressure reducing valve 5, the first solenoid valve 6, the first filter 7, and the dryer filter 8. The first fluid machine 1 is used to compress gas, the pressure reducing valve 5 is used to reduce the pressure in the first sub-passage 1001, the first solenoid valve 6 is used to open or close the first sub-passage 1001, the first filter 7 is used to filter the suspension with pressure difference within the first target range, and the dryer filter 8 is used to dry and filter the gas.

[0084] According to another optional embodiment of this application, the air pump generates some water vapor when compressing air. The dryer filter 8 can filter out the water vapor, thereby ensuring the continuous and normal operation of the valve. Without the dryer filter 8 to filter the water vapor generated by the air pump, the valve would need to be replaced periodically to ensure the normal operation of the device. Therefore, by providing the dryer filter 8, the operating cost of the device provided in this embodiment is reduced.

[0085] Figure 5 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 5 As shown, the third sub-channel 1003 includes: a first solenoid valve 6, a first filter 7, and a drying filter 8, wherein,

[0086] The second fluid machine 2 is connected to the first solenoid valve 6, the first filter 7 and the dryer filter 8, wherein the second fluid machine 2 is used to create a low-pressure or vacuum environment.

[0087] Figure 6 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 6 As shown, the second sub-channel 1002 includes: a second solenoid valve 9, a third solenoid valve 10, a second pressure sensor 11, and a second filter 12, wherein,

[0088] The first liquid storage device 3 is connected to the second solenoid valve 9, the third solenoid valve 10, the second pressure sensor 11, and the second filter 12. The first liquid storage device 3 is used to store liquid, the second solenoid valve 9 and the third solenoid valve 10 are used to open or close the second sub-passage 1002, the second pressure sensor 11 is used to measure the pressure of the fluid in the second sub-passage 1002, and the second filter 12 is used to filter the suspension with pressure difference within the second target range.

[0089] Figure 7 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 7 As shown, the fourth sub-channel 1004 includes: a second solenoid valve 9 and a fourth solenoid valve 13, wherein,

[0090] The first liquid storage device 3 is connected to the second solenoid valve 9, the fourth solenoid valve 13, and the second liquid storage device 4. The second liquid storage device 4 is used to store liquid, and the second solenoid valve 9 and the fourth solenoid valve 13 are used to open or close the fourth sub-passage 1004.

[0091] Figure 8 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 8 As shown, the fifth sub-channel 1005 also includes: a third fluid machinery 15 and a sixth solenoid valve 16, wherein,

[0092] The inlet is connected to the tenth solenoid valve 14, the third fluid machinery 15 and the sixth solenoid valve 16. The third fluid machinery 15 is used to transport liquid, and the tenth solenoid valve 14 and the sixth solenoid valve 16 are used to open or close the fifth sub-passage 1005.

[0093] Figure 9 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 9 As shown, the sixth sub-channel 1006 includes: an eighth solenoid valve 17, wherein,

[0094] The tenth solenoid valve 14 is connected to the eighth solenoid valve 17 and the second liquid storage device 4, wherein the eighth solenoid valve 17 is used to open or close the sixth sub-passage 1006.

[0095] Figure 10 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 10 As shown, the seventh sub-channel 1007 includes: a seventh solenoid valve 18, a fourth pressure sensor 19, and a third filter 20, wherein,

[0096] The second liquid storage device 4 is connected to the seventh solenoid valve 18, the fourth pressure sensor 19, the third filter 20 and the liquid outlet. The seventh solenoid valve 18 is used to open or close the seventh sub-passage 1007, the fourth pressure sensor 19 is used to measure the pressure of the fluid in the seventh sub-passage 1007, and the third filter 20 is used to filter suspensions with pressure differential within the third target range.

[0097] Figure 11 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 11 As shown, the eighth sub-passage 1008 includes: a fourth solenoid valve 13, a third solenoid valve 10, a second pressure sensor 11, and a second filter 12. The second liquid storage device 4 is connected to the fourth solenoid valve 13, the third solenoid valve 10, the second pressure sensor 11, the second filter 12, and the liquid extraction port. The fourth solenoid valve 13 and the third solenoid valve 10 are used to open or close the eighth sub-passage 1008. The second pressure sensor 11 is used to measure the pressure of the fluid in the eighth sub-passage 1008. The second filter 12 is used to filter suspensions with pressure differentials within the fourth target range.

[0098] Figure 12 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 12 As shown, the first liquid storage device 3 is also connected to the first liquid level gauge 21, the ninth solenoid valve 22, the fifth solenoid valve 23, and the first pressure sensor 24, wherein,

[0099] The first liquid level gauge 21 is used to measure the liquid level in the first liquid storage device 3;

[0100] The ninth solenoid valve 22 is connected to the first pressure relief port of the first liquid storage device 3 and is used to open or close the first pressure relief port;

[0101] The fifth solenoid valve 23 is connected to the liquid drain port of the first liquid storage device 3 and is used to open or close the liquid drain port;

[0102] The first pressure sensor 24 is used to measure the pressure of the liquid in the first liquid storage device 3.

[0103] Figure 13 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 13 As shown, the second liquid storage device 4 is also connected to the second level gauge 25, the eleventh solenoid valve 26, and the third pressure sensor 27, wherein,

[0104] The second level gauge 25 is used to measure the liquid level in the second liquid storage device 4;

[0105] The eleventh solenoid valve 26 is connected to the second pressure relief port of the second liquid storage device 4 and is used to open or close the second pressure relief port.

[0106] The third pressure sensor 27 is used to measure the pressure of the liquid in the second liquid storage device 4.

[0107] Figure 14 This is a structural diagram of a liquid injection device for another liquid cooling system according to an embodiment of this application, as shown below. Figure 14 As shown, the liquid injection device of the liquid cooling system also includes: a control unit 28 and a human-machine interface device, wherein,

[0108] The control unit 28 is connected to all the solenoid valves, all the level gauges, all the pressure sensors, the first fluid machine 1, the second fluid machine 2 and the third fluid machine 15 in the liquid injection device of the liquid cooling system, and is used to control all the solenoid valves, all the level gauges, all the pressure sensors, the first fluid machine 1, the second fluid machine 2 and the third fluid machine 15.

[0109] The human-machine interface device is connected to the control unit 28 and is used to set the parameters corresponding to positive pressure airtightness test, negative pressure airtightness test, liquid injection operation, liquid drainage operation, liquid extraction operation and self-circulation cleaning. The parameters include at least one of the following: test pressure, test flow rate, test time, test pressure stabilization time and pressure relief time.

[0110] According to an optional embodiment of this application, the positive pressure airtightness test includes the following steps:

[0111] Step 1: Open the air pressure channel, open the first solenoid valve 6, the second solenoid valve 9 and the third solenoid valve 10, and start the air pump to pressurize.

[0112] Step 2: After confirming that the pressure value has reached the required pressure through the second pressure sensor 11, close the third solenoid valve 10 and the air pump will automatically stop when it reaches the upper limit pressure.

[0113] Step 3: Perform pressure holding verification through control unit 28, that is, determine whether there is an airtightness leak in the device by performing air pressure calculation standard.

[0114] According to another optional embodiment of this application, the negative pressure airtightness test includes the following steps:

[0115] Step 1, open the vacuum channel: open the first solenoid valve 6, the second solenoid valve 9, the third solenoid valve 10 and the fourth solenoid valve 13, and start the vacuum pump to perform vacuuming operation.

[0116] Step 2: After confirming that the pressure value has reached the required pressure through the second pressure sensor 11, close the fourth solenoid valve 13 and the third solenoid valve 10, and stop the vacuum pump from running.

[0117] Step 3: Vacuum pressure is maintained by control unit 28, that is, air tightness is tested by air pressure calculation standard to determine whether there is an air tightness leak in this device.

[0118] In some optional embodiments of this application, the injection process includes the following steps:

[0119] Step 1, Liquid Injection Preparation: Open the tenth solenoid valve 14 and the eighth solenoid valve 17, wait for the pressure in the passage to return to normal and confirm that the liquid level is higher than the static injection level before performing static injection.

[0120] Step 2, Static liquid injection: Open the seventh solenoid valve 18 to begin static liquid injection into the liquid cooling system;

[0121] Step 3, Dynamic injection: After static injection is completed, open the sixth solenoid valve 16 and the eleventh solenoid valve 26, and start the third fluid machinery 15 (e.g., water pump). Use the water pump to obtain coolant from the self-supply device until the dynamic injection cutoff level is reached, or the pressure value reaches the maximum allowable pressure value. The water pump will then automatically shut down and the sixth solenoid valve 16 will be closed.

[0122] Step 4, complete the injection: When the fourth pressure sensor 19 reaches the required pressure value, close the seventh solenoid valve 18 to stop the injection.

[0123] As an optional embodiment of this application, the drainage operation includes the following steps:

[0124] Step 1, pneumatic drainage: After the injection is completed, the second liquid storage device 4 is drained. The air pump pressurizes the passage. Due to the positive pressure at the top of the second liquid storage device 4, the liquid is drained to the liquid supply device through the sixth sub-passage 1006 where the eighth solenoid valve 17 is located. When the second liquid level gauge 25 determines that the liquid level in the second liquid storage device 4 is at the lowest point, the eighth solenoid valve 17 is closed and the pressurization is stopped.

[0125] Step 2, degassing: Open the ninth solenoid valve 22 of the first liquid storage device 3 to degas. After the first pressure sensor 24 recovers, degassing stops.

[0126] Step 3, negative pressure vacuuming: Open the vacuuming passage through the first solenoid valve 6 and start the vacuum pump to perform vacuuming. Stop vacuuming after the value of the second pressure sensor 11 reaches the required pressure.

[0127] In some optional embodiments of this application, the liquid extraction operation includes the following steps:

[0128] Step 1: Close the passage of the first liquid storage device 3 by closing the second solenoid valve 9;

[0129] Step 2: Close the outlet of the liquid injection device of the liquid cooling system.

[0130] Step 3: Open the seventh solenoid valve 18, the third solenoid valve 10, and the fourth solenoid valve 13;

[0131] Step 4: After disconnecting from the liquid cooling system, a negative pressure will be formed in the liquid injection device of the liquid cooling system. The residual liquid in the passage will be returned through this negative pressure to complete the overall liquid injection test.

[0132] As another optional embodiment of this application, the self-circulating cleaning process includes the following steps:

[0133] Step 1: After draining the liquid from the second liquid storage device 4, open the liquid injection channel, that is, open the sixth solenoid valve 16, the eighth solenoid valve 17 and the tenth solenoid valve 14, replace the coolant in the liquid supply device with cleaning water, start the water pump, and start injecting cleaning water into the second liquid storage device 4.

[0134] Step 2: When the dynamic injection stop position is reached, the tenth solenoid valve 14 is adjusted to loop mode; the circulating injection cleaning action is performed, and after running for a preset time, the overall liquid is drained.

[0135] Figure 15 This is a structural diagram of the liquid injection system of a liquid cooling system according to an embodiment of this application, as shown below. Figure 15 As shown, the system includes: a liquid supply device 1504, a liquid cooling system 1506, and... Figure 1 The liquid injection device 1502 of the liquid cooling system shown herein, wherein,

[0136] The liquid injection device 1502 of the liquid cooling system is connected to the liquid supply device 1504 and the liquid cooling system 1506 respectively. It is used to obtain the liquid in the liquid supply device 1504, process the liquid in the liquid supply device 1504, and transport the processed liquid to the liquid cooling system 1506.

[0137] Liquid supply device 1504 is used to supply liquid to liquid injection device 1502 of liquid cooling system;

[0138] Liquid cooling system 1506 is used to receive the processed liquid delivered by the liquid injection device 1502 of the liquid cooling system.

[0139] Figure 16 This is a flowchart of a liquid injection method for a liquid cooling system according to an embodiment of this application, as shown below. Figure 16 As shown, the method includes the following steps:

[0140] Step S1602: Perform positive pressure airtightness test and negative pressure airtightness test on the liquid injection device of the liquid cooling system in sequence;

[0141] Step S1604: After the negative pressure airtightness test is passed, receive the liquid supplied by the liquid supply device and deliver the liquid supplied by the liquid supply device to the liquid cooling system.

[0142] Step S1606: After the liquid supplied by the liquid supply device is delivered to the liquid cooling system, the target liquid in the liquid injection device of the liquid cooling system is discharged, wherein the target liquid includes at least one of the following: residual liquid and liquid containing impurities.

[0143] According to an optional embodiment of this application, the liquid supplied by the liquid supply device is delivered to the liquid cooling system by the following method: when the pressure in the liquid injection device of the liquid cooling system is less than a preset pressure value, liquid is obtained from the liquid supply device by utilizing the pressure difference between the liquid injection device and the liquid supply device of the liquid cooling system until the liquid in the second liquid storage device is a first preset volume, wherein the first preset pressure value is less than the pressure of the liquid in the liquid supply device; when the liquid in the second liquid storage device is the first preset volume, liquid is obtained from the liquid supply device by using a third fluid machinery until the liquid in the second liquid storage device is a second preset volume, and the second preset volume of liquid is delivered to the liquid cooling system.

[0144] This application also provides a non-volatile storage medium, which includes a stored program, wherein the program, when running, controls the device where the storage medium is located to execute the liquid injection method of the liquid cooling system described above.

[0145] A non-volatile storage medium performs the following functions: sequentially performs a positive pressure airtightness test and a negative pressure airtightness test on the liquid filling device of the liquid cooling system; after the negative pressure airtightness test is passed, it receives liquid supplied by the liquid supply device and delivers the liquid supplied by the liquid supply device to the liquid cooling system; after delivering the liquid supplied by the liquid supply device to the liquid cooling system, it discharges the target liquid from the liquid filling device of the liquid cooling system, wherein the target liquid includes at least one of the following: residual liquid and liquid containing impurities.

[0146] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0147] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0148] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0149] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0150] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0151] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0152] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A liquid injection system for a liquid cooling system, characterized in that, include: The system comprises a liquid supply device, a liquid cooling system, and a liquid injection device, wherein the liquid injection device includes: a first fluid machinery, a second fluid machinery, a first liquid storage device, and a second liquid storage device, wherein... The liquid injection device is connected to the liquid supply device and the liquid cooling system respectively, and is used to obtain liquid from the liquid supply device, process the liquid in the liquid supply device, and transport the processed liquid to the liquid cooling system. The liquid supply device is used to supply liquid to the liquid injection device; The liquid cooling system is used to receive the processed liquid delivered by the liquid injection device; The first fluid machinery is connected to the liquid extraction port of the first liquid storage device and the liquid injection device for performing positive pressure airtightness testing. The first sub-passage is used to connect the first fluid machinery and the first liquid storage device. The first sub-passage includes a first filter and a drying filter. The first filter is used to filter the suspension with a pressure difference within a first target range. The drying filter is used to dry and filter the gas. The first fluid machinery is an air pump. The second fluid machine, connected to the first liquid storage device and the liquid extraction port, is used to perform negative pressure airtightness testing. The second fluid machine is a vacuum pump. The second liquid storage device is connected to the inlet and outlet of the liquid injection device, respectively, for performing liquid injection operations. The liquid injection device receives liquid supplied by the liquid supply device when the negative pressure airtightness test is passed. The first fluid machinery, connected to the inlet via the first and second liquid storage devices, is also used for draining operations; The second liquid storage device is also connected to the liquid extraction port and the liquid outlet respectively for performing liquid extraction operation. After the vacuum pump evacuates the passage, it closes the passage between the first liquid storage device and the second liquid storage device, and uses the pressure difference between the liquid injection device and the liquid cooling system to recover the residual liquid in the passage between the liquid injection device and the liquid cooling system to the second liquid storage device. The coolant in the liquid supply device is replaced with cleaning water to achieve self-circulating cleaning of the second liquid storage device.

2. The liquid injection system of the liquid cooling system according to claim 1, characterized in that, include: The first fluid machine is connected to the liquid extraction port via the first liquid storage device through a first passage; The second fluid machinery is connected to the extraction port via the first liquid storage device through a second passage; The liquid inlet is connected to the liquid outlet via the second liquid storage device through a third passage; The first fluid machine is also connected to the inlet via a fourth passage through the first liquid storage device and the second liquid storage device; The liquid extraction port is connected to the liquid outlet via the second liquid storage device through the fifth passage; The liquid inlet is connected to the second liquid storage device through a sixth passage.

3. The liquid injection system of the liquid cooling system according to claim 2, characterized in that, The first pathway includes: a first sub-path and a second sub-path; the second pathway includes: a third sub-path, a second sub-path, and a fourth sub-path; the third pathway includes: a fifth sub-path, a sixth sub-path, and a seventh sub-path; the fourth pathway includes: the sixth sub-path, the fourth sub-path, the first sub-path, and the third sub-path; the fifth pathway includes: the seventh sub-path and an eighth sub-path; and the sixth pathway includes: the fifth sub-path and the sixth sub-path, wherein... The second sub-channel is used to connect the first liquid storage device and the liquid extraction port; The third sub-channel is used to connect the second fluid machinery and the first liquid storage device; The fourth sub-channel is used to connect the first liquid storage device and the second liquid storage device; The fifth sub-channel is used to connect the liquid inlet to the first liquid storage device, wherein the fifth sub-channel includes: a tenth solenoid valve; The sixth sub-channel is used to connect the second liquid storage device and the tenth solenoid valve; The seventh sub-channel is used to connect the second liquid storage device and the liquid outlet; The eighth sub-channel is used to connect the first liquid storage device and the liquid extraction port.

4. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The first sub-circuit also includes: a pressure reducing valve and a first solenoid valve, wherein, The first fluid machinery is connected to the pressure reducing valve, the first solenoid valve, the first filter, and the dryer filter, wherein the first fluid machinery is used to compress gas, the pressure reducing valve is used to reduce the pressure in the first sub-passage, and the first solenoid valve is used to open or close the first sub-passage.

5. The liquid injection system of the liquid cooling system according to claim 4, characterized in that, The third sub-path includes: a first solenoid valve, a first filter, and a drying filter, wherein, The second fluid machinery is connected to the first solenoid valve, the first filter, and the dryer filter, wherein the second fluid machinery is used to create a low-pressure or vacuum environment.

6. The liquid injection system of the liquid cooling system according to claim 5, characterized in that, The second sub-circuit includes: a second solenoid valve, a third solenoid valve, a second pressure sensor, and a second filter, wherein, The first liquid storage device is connected to the second solenoid valve, the third solenoid valve, the second pressure sensor, and the second filter. The first liquid storage device is used to store liquid, the second solenoid valve and the third solenoid valve are used to open or close the second sub-passage, the second pressure sensor is used to measure the pressure of the fluid in the second sub-passage, and the second filter is used to filter suspensions with pressure differentials within the second target range.

7. The liquid injection system of the liquid cooling system according to claim 6, characterized in that, The fourth sub-channel includes: the second solenoid valve and the fourth solenoid valve, wherein... The first liquid storage device is connected to the second solenoid valve, the fourth solenoid valve, and the second liquid storage device. The second liquid storage device is used to store liquid, and the second solenoid valve and the fourth solenoid valve are used to open or close the fourth sub-passage.

8. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The fifth sub-channel further includes: a third fluid mechanism and a sixth solenoid valve, wherein... The inlet is connected to the tenth solenoid valve, the third fluid machinery, and the sixth solenoid valve, wherein the third fluid machinery is used to transport liquid, and the tenth and sixth solenoid valves are used to open or close the fifth sub-passage.

9. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The sixth sub-channel includes: an eighth solenoid valve, wherein... The tenth solenoid valve is connected to the eighth solenoid valve and the second liquid storage device, wherein the eighth solenoid valve is used to open or close the sixth sub-passage.

10. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The seventh sub-channel includes: a seventh solenoid valve, a fourth pressure sensor, and a third filter, wherein, The second liquid storage device is connected to the seventh solenoid valve, the fourth pressure sensor, the third filter, and the liquid outlet. The seventh solenoid valve is used to open or close the seventh sub-passage, the fourth pressure sensor is used to measure the pressure of the fluid in the seventh sub-passage, and the third filter is used to filter suspensions with pressure differentials within the third target range.

11. The liquid injection system of the liquid cooling system according to claim 7, characterized in that, The eighth sub-channel includes: the fourth solenoid valve, the third solenoid valve, the second pressure sensor, and the second filter, wherein, The second liquid storage device is connected to the fourth solenoid valve, the third solenoid valve, the second pressure sensor, the second filter, and the liquid extraction port. The fourth solenoid valve and the third solenoid valve are used to open or close the eighth sub-passage. The second pressure sensor is used to measure the pressure of the fluid in the eighth sub-passage. The second filter is used to filter suspensions with pressure differentials within the fourth target range.

12. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The first liquid storage device is also connected to a first level gauge, a ninth solenoid valve, a fifth solenoid valve, and a first pressure sensor, wherein, The first level gauge is used to measure the liquid level in the first liquid storage device; The ninth solenoid valve is connected to the first pressure relief port of the first liquid storage device and is used to open or close the first pressure relief port. The fifth solenoid valve is connected to the liquid drain port of the first liquid storage device and is used to open or close the liquid drain port. The first pressure sensor is used to measure the pressure of the liquid in the first liquid storage device.

13. The liquid injection system of the liquid cooling system according to claim 3, characterized in that, The second liquid storage device is also connected to a second level gauge, an eleventh solenoid valve, and a third pressure sensor, wherein, The second level gauge is used to measure the liquid level in the second liquid storage device; The eleventh solenoid valve is connected to the second pressure relief port of the second liquid storage device and is used to open or close the second pressure relief port. The third pressure sensor is used to measure the pressure of the liquid in the second liquid storage device.

14. The liquid injection system of the liquid cooling system according to claim 3, wherein the liquid injection device further comprises: Control unit and human-computer interaction device, among which, A human-machine interface device, connected to the control unit, is used to set parameters corresponding to the positive pressure airtightness test, the negative pressure airtightness test, the liquid injection operation, the liquid drainage operation, the liquid extraction operation, and the self-circulation cleaning, wherein the parameters include at least one of the following: test pressure, test flow rate, test time, stabilization time of the test pressure, and pressure relief time.

15. A method for injecting liquid into a liquid cooling system, characterized in that, This method is applied to the liquid injection system of the liquid cooling system according to any one of claims 1 to 14, comprising: The liquid injection device was subjected to positive pressure airtightness test and negative pressure airtightness test in sequence; After the negative pressure airtightness test is passed, the liquid supplied by the liquid supply device is received and the liquid supplied by the liquid supply device is delivered to the liquid cooling system. After the liquid supplied by the liquid supply device is delivered to the liquid cooling system, the target liquid in the liquid injection device is discharged, wherein the target liquid includes at least one of the following: residual liquid and liquid containing impurities.

16. The liquid injection method for the liquid cooling system according to claim 15, characterized in that, Delivering the liquid supplied by the liquid supply device to the liquid cooling system includes: When the pressure in the injection device is less than a preset pressure value, liquid is obtained from the supply device by utilizing the pressure difference between the injection device and the supply device until the liquid in the second storage device reaches a first preset volume, wherein the preset pressure value is less than the pressure of the liquid in the supply device. When the liquid in the second liquid storage device is at a first preset volume, liquid is obtained from the self-supply device using a third fluid machinery until the liquid in the second liquid storage device is at a second preset volume, and the second preset volume of liquid is transported to the liquid cooling system. The liquid inlet is connected to the first liquid storage device through a fifth sub-passage, which includes a third fluid machinery, a sixth solenoid valve, and a tenth solenoid valve. The liquid inlet is connected to the tenth solenoid valve, the third fluid machinery, and the sixth solenoid valve. The third fluid machinery is used to transport liquid, and the tenth and sixth solenoid valves are used to open or close the fifth sub-passage.

17. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to perform the liquid injection method of the liquid cooling system according to any one of claims 15 to 16.

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