Liquid injection and exhaust method, liquid cooling system, controller and storage medium

Abstract

The invention provides a liquid injection and exhaust method, a liquid cooling system, a controller and a storage medium, and belongs to the technical field of cooling capacity distribution.The method comprises the steps that a liquid injection pump is started, and liquid injection is conducted on a secondary side pipeline and a liquid storage tank till liquid injection of the secondary side pipeline and the liquid storage tank is completed; and starting the circulating pump, enabling the circulating pump to operate at a first preset rotating speed, exhausting the secondary side pipeline through the exhaust valve, and controlling the liquid supplementing pump to supplement liquid to the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets a first preset pressure condition. According to the scheme, the efficiency of exhausting and liquid supplementing is improved, it is guaranteed that the liquid cooling system can exhaust completely, and follow-up operation of the liquid cooling system is stable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cold distribution, and particularly relates to a liquid injection and air exhaust method, a liquid cooling system, a controller and a storage medium. BACKGROUND

[0002] Liquid cooling refers to a cooling method using a liquid with high specific heat capacity as a heat exclusive medium to meet the high heat flux density heat dissipation requirement of a device such as a server. The liquid cooling technology is concerned by the industry such as a data processing center due to its superiority in heat dissipation efficiency and energy utilization. Among them, the coolant distribution unit (CDU) is a key device in the heat dissipation system of the data processing center.

[0003] In the related art, engineers usually use an external liquid injection tool on site to fill the cooling liquid in the secondary side circulation management, and whether the first filling of the cooling liquid is completed is determined according to whether the water pressure of the secondary side pipeline meets the target value.

[0004] However, different construction sites make the on-site arrangement of the secondary side pipeline generally have air pockets, water pockets or cecum and other piping arrangements that can easily accumulate air. The presence of air in the pipeline can seriously affect the accuracy of liquid injection and the operation reliability of the liquid cooling system. The secondary side pipeline needs to be subjected to a plurality of air exhaust and liquid injection processes to ensure that the cooling liquid can fill the secondary side pipeline. Therefore, the engineer needs to repeatedly perform water pressure detection and air exhaust and liquid injection operations, which leads to a complex air exhaust process and is not conducive to the rapid arrangement and subsequent stable operation of the liquid cooling system. SUMMARY

[0005] The application aims to provide a liquid injection and air exhaust method, a liquid cooling system, a controller and a storage medium, and aims to solve the problem of a complex air exhaust process of the liquid cooling system, which is not conducive to the rapid arrangement and subsequent stable operation of the liquid cooling system.

[0006] A first aspect of the embodiment of the application provides a liquid injection and air exhaust method applied to a liquid cooling system. The liquid cooling system includes a secondary side pipeline for supplying liquid to a device cold plate, a liquid storage tank for storing liquid and supplementing the secondary side pipeline, a liquid injection pump for driving liquid injection into the secondary side pipeline and the liquid storage tank, a circulating pump for driving the liquid circulation flow of the secondary side pipeline, and a liquid supplement pump for driving the liquid supplement of the liquid storage tank to the secondary side pipeline, wherein an air exhaust valve is arranged in the secondary side pipeline. The method comprises: starting the liquid injection pump to inject liquid into the secondary side pipeline and the liquid storage tank until the liquid injection of the secondary side pipeline and the liquid storage tank is completed; The circulation pump is started and runs at a first preset speed. The secondary side pipeline is vented through the vent valve. Based on the pipeline pressure value of the secondary side pipeline, the replenishment pump is controlled to replenish the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

[0007] In some embodiments, after the pipeline pressure value of the secondary side pipeline meets a first preset pressure condition, the method further includes: The circulating pump is controlled to operate at a second preset speed, and based on the pipeline pressure value of the secondary side pipeline, the replenishment pump is controlled to replenish the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the second preset pressure condition, wherein the second preset speed is greater than the first preset speed.

[0008] In some embodiments, the secondary side pipeline is further provided with a flow meter, and the method includes: When venting the secondary side pipeline through the vent valve, the flow rate of the secondary side pipeline is also detected by the flow meter. When the flow rate of the secondary side pipeline is lower than a preset value, the circulation pump stops operating.

[0009] In some embodiments, the injection pump is connected to the secondary side pipeline and the storage tank respectively via a quick connector; The injection pump is started to inject liquid into the secondary side pipeline and the storage tank until the injection into the secondary side pipeline and the storage tank is completed, specifically including: The pipeline pressure value of the secondary side pipeline is obtained. When the pipeline pressure value is less than the first preset target pressure value, the injection pump is started to inject liquid into the secondary side pipeline until the pipeline pressure value is greater than or equal to the second preset target pressure value. The liquid level of the storage tank is obtained. When the liquid level is less than a preset liquid level value, the injection pump is started to inject liquid into the storage tank until the liquid level of the storage tank is greater than or equal to the preset liquid level value.

[0010] In some embodiments, the pipeline pressure value of the secondary side pipeline includes the secondary side return pressure value and the secondary side supply pressure value. Determining that the pipeline pressure value is greater than or equal to a second preset target pressure value includes: The sum of the preset operating pressure target value and the preset operating pressure hysteresis value of the secondary side pipeline is determined as the second preset target pressure value; If the secondary side return pressure value in the pipeline pressure value is greater than the second preset target pressure value, and the secondary side supply pressure value in the pipeline pressure value is greater than the second preset target pressure value, then the pipeline pressure value is determined to be greater than or equal to the second preset target pressure value.

[0011] In some embodiments, controlling the replenishment pump to replenish liquid to the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets a first preset pressure condition includes: If the pipeline pressure value of the secondary side pipeline does not meet the first preset pressure condition when the circulation pump is shut down for a first duration, the circulation pump is shut down. After the replenishment pump has been shut down for a second period of time, the circulation pump is restarted until the pressure value of the secondary side pipeline meets the first preset pressure condition.

[0012] In some embodiments, controlling the replenishment pump to replenish liquid to the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets a first preset pressure condition includes: Determine the difference between the secondary side supply pressure and the secondary side return pressure in the pipeline pressure values; If the difference is not less than the first preset pressure condition, it is determined that the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition. A second aspect of this application provides a liquid cooling system, the system comprising: a secondary side pipeline, a power module, a monitoring module, a liquid storage module, a liquid replenishment module, and a liquid injection module; The secondary side pipeline is connected to the equipment cold plate and is used to supply liquid to the equipment cold plate. The equipment cold plate is used to cool and reduce the temperature of the terminal equipment. The power module includes a circulation pump, which provides driving force for the liquid coolant in the system, allowing the coolant to circulate within the system. The monitoring module includes a pressure detection unit for detecting the pipeline pressure value of the secondary side pipeline; The liquid storage module includes a liquid storage tank and a liquid level sensor. The liquid storage tank is used to store the coolant in the system, and the liquid level sensor is used to detect the liquid level of the coolant in the liquid storage tank. The replenishment module includes a replenishment pump for replenishing coolant to the system after purging the gas from the system. The injection module includes an injection pump, which drives the liquid coolant to inject liquid coolant into the secondary side pipeline and the storage tank.

[0013] A third aspect of this application provides a controller, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the liquid injection and venting method as described above.

[0014] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the liquid injection and venting method described above.

[0015] A fifth aspect of this application provides a computer program product that, when run on an electronic device, causes the electronic device to perform the liquid injection and venting method as described above.

[0016] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: In this embodiment, the liquid filling status of the secondary side pipeline and the liquid storage tank is monitored. After the initial liquid filling of the secondary side pipeline and the liquid storage tank is completed, the circulation pump is started. The circulation pump drives the coolant in the system to circulate in the secondary side pipeline, thereby causing the gas to be automatically discharged through the vent valve of the secondary side pipeline. Furthermore, during the operation of the circulation pump, the liquid cooling system is replenished after venting by detecting the pipeline pressure value of the secondary side pipeline. In this way, no manual intervention by the engineer is required during the venting and replenishment process. The liquid cooling system can automatically vent, which improves the efficiency of venting and replenishment, ensures that the liquid cooling system can be completely vented, and makes the subsequent operation of the liquid cooling system stable. Moreover, by automatically venting and replenishing the liquid cooling system, there are no restrictions on the layout location of the liquid cooling system, making the layout method and location of the liquid cooling system more flexible. Attached Figure Description

[0017] Figure 1 A schematic diagram of a liquid cooling system provided in an exemplary embodiment is shown; Figure 2 A schematic diagram of a liquid cooling system provided in an exemplary embodiment is shown; Figure 3 A schematic flowchart of an exemplary embodiment of a liquid injection and venting method is shown. Figure 4 A schematic flowchart of an exemplary embodiment of a liquid injection and venting method is shown. Figure 5 A schematic flowchart of an exemplary embodiment of a liquid injection and venting method is shown. Figure 6 A schematic flowchart of an exemplary embodiment of a liquid injection and venting method is shown. Figure 7 A schematic diagram of a controller provided in an exemplary embodiment is shown. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] Liquid cooling refers to a cooling method that uses a liquid with a high specific heat capacity as a dedicated heat transfer medium to meet the high heat flux density cooling requirements of equipment such as servers. Liquid cooling technology has attracted significant attention from industries such as data processing centers due to its superior performance in heat dissipation efficiency and energy utilization. Among these components, the Coolant Distribution Unit (CDU) is a key piece of equipment in the heat dissipation system of a data processing center.

[0021] In some embodiments, engineers typically use an external injection device on-site to fill the secondary circulation system with coolant, and determine whether the initial coolant filling is complete based on whether the water pressure in the secondary circulation pipeline meets the target value.

[0022] However, due to the different construction sites, the secondary side piping layout commonly uses air bags, water bags, or blind loops, which are prone to air accumulation. The presence of air in the piping will seriously affect the accuracy of liquid injection and the operational reliability of the liquid cooling system. The secondary side piping needs to undergo multiple venting and liquid injection processes to ensure that the coolant can fill the secondary side piping. Therefore, engineers need to repeatedly perform water pressure testing and venting and liquid injection operations, which makes the venting process complicated and is not conducive to the rapid layout and subsequent stable operation of the liquid cooling system.

[0023] To improve the layout efficiency and operational stability of liquid cooling systems, this application provides a liquid filling and venting method, a liquid cooling system, a controller, and a storage medium. The method monitors the liquid filling status of the secondary side piping and the storage tank. After the initial filling of the secondary side piping and the storage tank, a circulation pump is started. The circulation pump drives the coolant in the system to circulate in the secondary side piping, thereby automatically venting gas through the venting valve of the secondary side piping. Furthermore, during the operation of the circulation pump, the liquid cooling system is replenished after venting by detecting the pipeline pressure value of the secondary side piping. This eliminates the need for manual intervention by engineers during the venting and replenishment process, allowing the liquid cooling system to automatically vent, improving the efficiency of venting and replenishment, ensuring complete venting of the liquid cooling system, and ensuring stable subsequent operation. Moreover, the automatic venting and replenishment of the liquid cooling system does not restrict the layout location of the liquid cooling system, making the layout method and location of the liquid cooling system more flexible.

[0024] The present application will now be described with reference to specific embodiments. See below. Figure 1 This illustrates a schematic diagram of a liquid cooling system provided in an exemplary embodiment. Figure 1 As shown, the liquid cooling system includes a secondary side pipeline 11, a power module 12, a monitoring module 13, a liquid storage module 14, a liquid replenishment module 15, and a liquid injection module 16. The secondary side pipeline 11 is connected to the equipment cold plate and supplies liquid to the equipment cold plate, which is used to cool the terminal equipment. The power module 12 includes a circulation pump, which provides driving force for the coolant in the system, allowing the coolant to circulate within the system. The monitoring module 13 includes a pressure detection unit, which detects the pipeline pressure value of the secondary side pipeline 11. The liquid storage module 14 includes a liquid storage tank 131 and a liquid level sensor. The liquid storage tank 131 stores the coolant in the system, and the liquid level sensor detects the liquid level height of the coolant in the liquid storage tank 131. The liquid replenishment module 15 includes a liquid replenishment pump 152, which replenishes the system with coolant after removing gas from the system.

[0025] In some embodiments, the liquid cooling system can be a Coolant Distribution Unit (CDU) system. Accordingly, the secondary side piping 11, power module 12, monitoring module 13, liquid storage module 14, liquid replenishment module 15, and liquid injection module 16 are some components of the CDU. It should be noted that the CDU may also include more components; for example, the CDU may also include a heat exchange module, primary side piping, etc.

[0026] The secondary side pipeline 11 includes a secondary side return pipeline 111, a secondary side supply pipeline 112, and a secondary side pipeline vent valve 113, used to connect the heat exchange module to the cooling plate of the equipment being cooled. The secondary side supply pipeline 112 and the secondary side return pipeline 111 are equipped with the secondary side pipeline vent valve 113, allowing accumulated gas in the system to be discharged outside the system. This prevents the gas from causing turbidity to the circulating pump during circulation and also avoids affecting the heat exchange efficiency of the heat exchange module.

[0027] The power module 12 may include a first pump body channel 121 and a second pump body channel 122 connected in parallel. The first pump body channel 121 includes a first circulating pump 1211, a first inlet butterfly valve 1212, a first outlet butterfly valve 1213, a first pump body check valve 1214, and a first drain valve 1215. The first inlet butterfly valve 1212 is connected to the inlet of the first circulating pump 1211. One end of the first outlet butterfly valve 1213 is connected to the outlet of the first water pump, and the other end of the first outlet butterfly valve 1213 is connected to the first check valve sequentially in the direction of coolant flow. The first drain valve 1215 is located between the first inlet butterfly valve 1212 and the first circulating water pump, and is used to drain the coolant from the first pump body channel 121 when the first circulating pump 1211 is replaced. The second pump body channel 122 is the same as the first pump body channel 121 and will not be described further.

[0028] The monitoring module 13 includes pressure sensors, temperature sensors, a secondary-side pipeline flow meter, and a safety valve. The pressure sensors include a secondary-side supply pressure sensor, a secondary-side return pressure sensor, a circulating pump inlet pressure sensor, and a circulating pump outlet pressure sensor. It should be noted that the number of each type of sensor can be set according to needs and space constraints, and the number of different types of sensors can be the same or different. In this embodiment, no specific limitation is made on the number of sensors. For example, the number of each type of sensor can be 1, 2, 3, or 5, etc.

[0029] In some embodiments, the secondary-side supply pressure sensor and the secondary-side return pressure sensor are located in the secondary-side supply pipeline 112 and the secondary-side return pipeline 111, respectively. The secondary-side supply pressure sensor is used to detect the pressure of the coolant flowing from the heat exchange module to the equipment cold plate, and the secondary-side return pressure sensor is used to detect the pressure of the coolant flowing from the equipment cold plate to the heat exchange module. The circulating pump inlet pressure sensor and the circulating pump outlet pressure sensor are located in the inlet pipe section and the outlet pipe section of the power module 12, respectively, and are used to detect the operating status of the first circulating pump 1211 and the second circulating pump 1221.

[0030] The temperature sensor includes a secondary-side supply liquid temperature sensor and a secondary-side return liquid temperature sensor, which detect the temperature in the secondary-side supply liquid pipeline 112 and the secondary-side return liquid pipeline 111, respectively. The secondary-side supply liquid pressure sensor is used to detect the temperature of the coolant flowing from the heat exchange module to the equipment cold plate, and the secondary-side return liquid pressure sensor is used to detect the temperature of the coolant flowing from the equipment cold plate to the heat exchange module. The secondary-side flow meter can monitor the coolant flow rate of the liquid cooling system, visually and intuitively detect the stability of the liquid cooling system operation, and simultaneously control the flow rate of the liquid cooling system.

[0031] The pressure relief port of the safety valve can be connected to the pressure relief inlet of the liquid storage tank 141 via a hose. This safety valve is used to release coolant to the outside of the liquid cooling system when the pressure of the coolant in the liquid cooling system exceeds the valve's pressure relief value, thereby preventing the liquid cooling system pressure from exceeding the safe operating pressure value and protecting the components in the system.

[0032] The liquid storage module 14 includes a liquid storage tank 141, a high liquid level sensor 142, a low liquid level sensor 143, a liquid storage vent valve 144, a first liquid storage quick-connect male connector 145, and a second liquid storage quick-connect male connector 146. The liquid storage tank 141 includes a replenishment port, a first injection port, a second injection port 1411, a drain port, and a manual ball valve 1412. The second injection port 1411 includes a chain-connected cover and a liquid storage pressure relief inlet. The first liquid storage quick-connect male connector 145 is installed at the replenishment port. The second liquid storage quick-connect male connector 146 is installed at the first injection port. The liquid storage vent valve 144 is installed on the top of the liquid storage tank 141. The drain port is connected to the manual ball valve 1412.

[0033] The coolant replenishment module 15 includes a coolant replenishment check valve 151, a coolant replenishment pump 152, a male quick-connect fitting 153, a female quick-connect fitting 154, a first reservoir quick-connect fitting 155, and an vent needle valve 156. The female quick-connect fitting 154 is installed at the outlet of the coolant replenishment pump 152, the female quick-connect fitting 155 is installed at the inlet of the coolant replenishment pump 152, the male quick-connect fitting 153 is installed at the inlet of the coolant replenishment check valve 151, and the vent needle valve 156 is located between the coolant replenishment check valve 151 and the coolant replenishment pump 152 to remove air from the coolant replenishment pipeline. The coolant replenishment check valve 151 is located before the coolant replenishment pump 152 and its function is to prevent coolant from flowing back into the reservoir 151.

[0034] The liquid injection module 16 includes a liquid injection pump 161, a first liquid injection check valve 162, a second liquid injection check valve 163, an electric three-way valve 164, a first liquid injection quick-connect male connector 165, a second liquid injection quick-connect female connector 166, a second liquid injection quick-connect male connector 167, and a second liquid storage quick-connect female connector 168. The first liquid injection quick-connect male connector 165 is installed at the inlet of the liquid injection pump 161 and is connected to an external coolant storage container. The second liquid injection quick-connect female connector 166 is installed at the outlet of the liquid injection pump 161. The second liquid injection quick-connect male connector 167 is installed at the inlet of the electric three-way valve 164. The second liquid injection quick-connect female connector 166 is compatible with the second liquid injection quick-connect male connector 167. The second liquid storage quick-connect female connector 168 is installed at the outlet of the first liquid injection check valve 162.

[0035] The following describes its operation process using a liquid cooling system as an example. (See [link to relevant documentation]). Figure 2 This illustrates an operational embodiment of a liquid cooling system provided by an exemplary embodiment. For example... Figure 2 As shown, the injection module 16 is connected to a hose with a matching quick-connect female connector via a first injection quick-connect male connector 165. When the outlet direction of the electric three-way valve 164 changes to connect with the second injection check valve 163, driven by the injection pump 161, external coolant will sequentially enter the secondary side return line 111 through the first injection quick-connect male connector 165, the injection pump 161, the second injection quick-connect female connector 166, the second injection quick-connect male connector 167, the electric three-way valve 164, and the second injection check valve 163. When the outlet direction of the electric three-way valve 164 changes to connect with the first liquid injection check valve 162, under the drive of the liquid injection pump 161, the external coolant will sequentially pass through the first liquid injection quick connector male 165, the liquid injection pump 161, the second liquid injection quick connector female 166, the second liquid injection quick connector male 167, the electric three-way valve 164, the first liquid injection check valve 162, and the second liquid storage quick connector female 168 into the liquid storage tank 141.

[0036] The direction of the outlet of the electric three-way valve 164 can be controlled by the detection results of the secondary side liquid supply pressure sensor 131, the secondary side liquid return pressure sensor 132, and the low liquid level sensor 143 in the monitoring module 13, thereby realizing the automatic initial liquid injection rate and the liquid replenishment process for liquid injection and venting. The function of the first liquid injection check valve 162 and the second liquid injection check valve 163 is to prevent the coolant in the secondary side liquid return pipeline 111 and the liquid storage tank 141 from flowing back into the external coolant storage container. Specifically, the liquid injection pump 161 is a self-priming water pump, and a water pump with a different flow rate is selected according to the power of different CDU units.

[0037] Please continue reading Figure 2The liquid storage module 14 is connected to the liquid injection module 16 via a second liquid storage quick-connect male connector 146 and a second liquid storage quick-connect female connector 168. Coolant pumped by the liquid injection module 16 enters the liquid storage tank 141 through the second liquid storage quick-connect male connector 146. A high-level sensor 142 and a low-level sensor 143 detect the liquid level in the liquid storage tank 141 to determine whether the liquid injection pump 161 needs to be activated to add coolant to the liquid storage tank 141. The second injection port 1411 includes a chain-linked cover and a liquid storage pressure relief inlet for manually and quickly adding coolant to the liquid storage tank 141; a liquid storage vent valve 144 is used to vent air from the liquid storage tank 141; and a manual ball valve 1412 is used to discharge liquid from the liquid storage tank 141.

[0038] The replenishment module 15 is connected to the storage module 14 via a first quick-connect female connector 155 and a first quick-connect male connector 145. Driven by the replenishment pump 152, the coolant in the storage tank 131 sequentially flows through the first quick-connect female connector 145, the replenishment pump 152, the replenishment quick-connect female connector 154, the replenishment quick-connect male connector 153, and the replenishment check valve 151 into the secondary return line 111. The vent needle valve 156 vents the gas in the line between the replenishment quick-connect male connector 153 and the replenishment check valve 151 during the operation of the replenishment pump 152, preventing gas and liquid from simultaneously entering the secondary return line 111. The replenishment check valve 151 prevents coolant in the secondary return line 111 from flowing back into the storage tank 141. The replenishment pump 152 is a self-priming water pump.

[0039] The power module 12 provides driving force for the flow of coolant in the secondary side pipes 11 and 1221 through the first circulation pump 1211 and the second circulation pump 1221. It also carries away accumulated air in the secondary side pipes through the exhaust valve 113. The first circulation pump 1211 and the second circulation pump 1221 operate in a one-to-one standby configuration. This allows the first pump to serve as a backup in case of a failure of the main circulating pump, or it can be rotated periodically to balance the operating time of the circulating pumps and effectively extend their lifespan. The first inlet butterfly valve 1212 and the first outlet butterfly valve 1213 close the first pump body channel 121 when the first circulation pump 1211 fails, enabling online replacement of the circulating pump without shutting down the system, reducing losses caused by server downtime for maintenance and replacement. Similarly, the second inlet butterfly valve 1222 and the second outlet butterfly valve 1223 serve the same function. When the second circulation pump 1221 is running, the first pump body check valve 1214 can prevent coolant from flowing back into the first pump body channel 121. Similarly, the second pump body check valve 1224 has the same function. The function of the first drain valve 1215 is to drain the coolant between the first inlet butterfly valve 1212 and the first outlet butterfly valve 1213 when the first circulation pump 1211 is disassembled.

[0040] The secondary side pipeline 11 connects the secondary side pipeline, injection module 16, storage module 14, replenishment module 15, power module 12, and heat exchange module sequentially through the secondary side supply pipeline 112 and the secondary side return pipeline 111. The secondary side pipeline vent valve 113 is located at the highest point of the secondary side supply pipeline 112 and the secondary side return pipeline 111. Considering the multiple high points in the secondary side pipeline 11's layout, more than two vent valves 113 can be arranged to discharge accumulated gas from the secondary side system, preventing cavitation of the circulating pump during circulation and affecting the heat exchange effect of the heat exchange module. Furthermore, the secondary side pipeline 11 also includes a secondary side electric proportional regulating valve, which reduces the flow rate of the secondary side supply pipeline 112 and regulates the flow rate of the secondary side system by allowing coolant bypassing the secondary side supply pipeline 112 to return to the secondary side return pipeline 111. Furthermore, the secondary side piping 11 also includes a secondary side system expansion tank 114 to balance the secondary side system pressure. Additionally, the expansion tank 114 is placed in the first pump body passage 121 and its inlet side in the power module 12 to prevent cavitation of the first circulation pump 1211 and the second circulation pump 1221 due to low system pressure. Furthermore, the secondary side piping 11 also includes a Y-type filter 115 to filter residual impurities in the coolant.

[0041] In addition, the liquid cooling system also includes a heat exchange module, which comprises a heat exchanger. This heat exchange module is the core heat exchange equipment of the system, realizing heat exchange between the secondary and primary systems. The heat exchanger can be a plate heat exchanger, including a secondary-side heat exchange channel and a primary-side heat exchange channel. The secondary-side system heat exchange channel is connected to the secondary-side liquid supply pipeline 112 and the secondary-side liquid return pipeline 111, respectively. The primary-side system heat exchange channel is connected to the outdoor heat dissipation module, utilizing the outdoor natural cold source to dissipate heat from the high-temperature liquid returning from the secondary system. Preferably, the heat exchanger can be a copper tube aluminum fin heat exchanger. The difference between this and a plate heat exchanger is that it does not have a primary-side system heat exchange channel and does not need to be connected to the outdoor heat dissipation module. Instead, it uses the unit's own fan to dissipate heat from the indoor air-cooled air conditioner, utilizing the cold source of the indoor air-cooled air conditioner.

[0042] Based on the above-mentioned liquid cooling system, this application provides a liquid injection and venting method, see [link to relevant documentation]. Figure 3 The diagram illustrates a flow chart of a liquid injection and venting method provided in an exemplary embodiment. By way of example and not limitation, the method is applied to a controller that controls the aforementioned liquid cooling system to implement the liquid injection and venting method.

[0043] S301, the controller starts the injection pump to inject liquid into the secondary side pipeline and the storage tank until the injection into the secondary side pipeline and the storage tank is completed.

[0044] When the initial liquid injection and venting mode is activated, the controller sequentially injects liquid into the secondary side pipeline and the storage tank via the injection pump. In this embodiment, the liquid injection and venting process of the liquid cooling system is divided into three stages: the initial liquid injection stage, the initial venting stage, and the trial operation stage. This step is the initial liquid injection stage. The injection pump is connected to the secondary side pipeline and the storage tank via quick-connect fittings; when the controller detects the activation of the initial liquid injection and venting mode, it begins sequentially injecting liquid into the secondary side pipeline and the storage tank. See also... Figure 4 This process is implemented through the following steps S3011-S3012, including: S3011, the controller obtains the pipeline pressure value of the secondary side pipeline. When the pipeline pressure value is less than the first preset target pressure value, the controller starts the injection pump to inject liquid into the secondary side pipeline until the pipeline pressure value is greater than or equal to the second preset target pressure value.

[0045] When the initial injection and venting mode is activated, the injection port is set to the secondary side pipeline direction via the quick-connect connector, and the controller injects liquid into the secondary side pipeline through the injection pump. In some embodiments, when the controller enables the initial injection and venting mode, the controller detects the injection port direction. If the injection port direction is the secondary side pipeline direction, the controller starts the injection pump to inject liquid into the secondary side pipeline; if the injection port direction is not the secondary side pipeline direction, the controller switches the injection port direction to the secondary side pipeline direction, and then starts the injection pump to inject liquid into the secondary side pipeline.

[0046] Before the controller controls the injection pump to inject liquid into the secondary side pipeline, it first checks whether the pipeline pressure value of the secondary side pipeline is less than the first preset target pressure value. When the pipeline pressure value of the secondary side pipeline is less than the first preset target pressure value, the step of injecting liquid into the secondary side pipeline is executed.

[0047] Accordingly, after the controller enables the initial liquid injection and venting mode, it monitors the pipeline pressure value of the secondary side pipeline in real time through the monitoring module, and determines whether to inject liquid into the secondary side pipeline based on the pipeline pressure value. In this embodiment, the first preset target pressure value can be set according to the actual allowable operating pressure of the secondary side pipeline. In this embodiment, the target operating pressure value is not specifically limited. Accordingly, the pipeline pressure value includes the secondary side return pressure value P1 and the secondary side supply pressure value P2. When the secondary side return pressure value P1 is less than the target operating pressure value PL, and the secondary side supply pressure value P2 is less than the target operating pressure value PL, it is determined that the pipeline pressure value of the secondary side pipeline is less than the first preset target pressure value, and the step of injecting liquid into the secondary side pipeline is executed.

[0048] During the process of injecting liquid into the secondary side pipeline, the pressure value of the secondary side pipeline is monitored in real time. When the pressure value of the secondary side pipeline is detected to be greater than or equal to the second preset target pressure value, the controller switches the injection port to the storage tank and injects liquid into the storage tank.

[0049] When the pressure value of the secondary side pipeline is detected to be greater than or equal to the second preset target pressure value, the controller controls the outlet direction of the electric three-way valve to switch to the direction connected to the liquid storage tank, thereby controlling the injection pump to inject liquid into the liquid storage tank. In some embodiments, when the controller determines that the liquid injection in the secondary side pipeline is complete, it first stops the injection pump, then controls the electric three-way valve to switch the outlet direction. When it is detected that the outlet direction of the electric three-way valve has switched to the liquid storage tank, the injection pump is restarted to prevent problems such as leakage when switching the liquid injection target.

[0050] See Figure 5 The diagram illustrates a flow chart of an exemplary liquid injection and venting method. During the liquid injection process into the secondary side pipeline, the controller monitors the pipeline pressure value in real time and determines whether the pipeline pressure value is greater than or equal to a second preset target pressure value. If the pipeline pressure value is less than the second preset target pressure value, the controller controls the injection pump to continue injecting liquid into the secondary side pipeline; if the pipeline pressure value is greater than or equal to the second preset target pressure value, the controller switches the injection port to the storage tank and controls the injection pump to inject liquid into the storage tank.

[0051] The second preset target pressure value may be the same as or different from the first target pressure value. In this embodiment, the second target pressure value is not specifically limited. For example, the second preset target pressure value may be the sum of a preset operating pressure target value and a preset operating pressure hysteresis value. Accordingly, the controller determines the sum of the preset operating pressure target value and the preset operating pressure hysteresis value of the secondary side pipeline as the second preset target pressure value; if the secondary side return pressure value in the pipeline pressure value is greater than the second preset target pressure value, and the secondary side supply pressure value in the pipeline pressure value is greater than the second preset target pressure value, the pipeline pressure value is determined to be greater than or equal to the second preset target pressure value.

[0052] In this implementation, the need to switch the injection direction is determined by detecting the pipeline pressure value of the secondary side pipeline, which ensures that the coolant in the system is sufficient and not excessive.

[0053] S3012, the controller obtains the liquid level of the storage tank. When the liquid level is less than the preset liquid level value, the controller starts the injection pump to inject liquid into the storage tank until the liquid level of the storage tank is greater than or equal to the preset liquid level value.

[0054] After initiating the initial coolant filling and venting mode, the controller monitors the coolant level H in the reservoir using high and low level sensors in the reservoir module. By comparing this level with a preset level, it determines whether the coolant level in the reservoir is complete. For example, please continue to see... Figure 5 When the liquid level is lower than the preset liquid level, it is determined that the liquid filling of the storage tank is not complete, and the liquid filling pump continues to be controlled to fill the tank; when the liquid level is greater than or equal to the preset liquid level, it is determined that the first liquid filling stage of the storage tank is complete. The preset liquid level can be set according to the rated storage capacity of the storage tank; in this embodiment, the preset liquid level is not specifically limited.

[0055] In this implementation, the controller presets the target operating pressure value, the operating pressure hysteresis value, and the liquid filling height of the reservoir for the secondary side pipeline. By using these preset target operating pressure value, operating pressure hysteresis value, and liquid filling height of the reservoir for the secondary side pipeline, the injection status of coolant in the system is monitored, thereby achieving automatic control of the initial liquid filling stage and reducing the workload of engineers.

[0056] S302, the controller starts the circulation pump, making the circulation pump run at a first preset speed, venting the secondary side pipeline through the vent valve, and controlling the replenishment pump to replenish the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

[0057] After the initial filling of the secondary side pipeline and the liquid storage tank is completed, the controller determines that the initial venting stage has begun. During the initial venting process, the controller starts the circulation pump, which drives the coolant to circulate at a certain flow rate through the secondary side pipeline, the secondary side pipeline, and the equipment cold plate, automatically discharging any accumulated gas through the vent valve in the secondary side pipeline.

[0058] It should be noted that during the initial exhaust stage, the circulating pump is controlled to operate at a first speed, which is any speed less than the rated speed of the circulating pump. In this embodiment, the first speed is not specifically limited.

[0059] During the operation of the circulating pump, the controller controls the replenishment pump to replenish liquid into the secondary side pipeline based on the pipeline pressure value. This pipeline pressure value includes the secondary side return pressure and the secondary side supply pressure. During the venting process, the controller determines whether gas is being released by monitoring the secondary side pipeline pressure value in real time, thereby determining whether replenishment is necessary. This process can be achieved through the following steps S3021-S3029, including: S3031, the controller monitors the pipeline pressure value of the secondary side pipeline in real time.

[0060] The controller uses the secondary side return pressure sensor and the secondary side supply pressure sensor in the monitoring module to detect the secondary side return pressure value and the secondary side supply pressure value of the secondary side pipeline, respectively.

[0061] S3032, when the running time of the circulating pump reaches the first duration, if the pipeline pressure value of the secondary side pipeline does not meet the first preset pressure condition, the circulating pump is shut down.

[0062] In some embodiments, the controller determines in real time whether the detected pressure value of the secondary side pipeline meets a first preset pressure condition, thereby enabling timely determination of the exhaust status and improving exhaust efficiency. In other embodiments, please refer to... Figure 5 After controlling the circulating pump to run for a first period of time, the system checks whether the currently detected pipeline pressure value meets the first preset pressure condition. This reduces the controller's calculation process and lowers its computational burden. The first period of time can be set as needed; in this embodiment, it is not specifically limited. For example, the first period of time can be 1 minute, 2 minutes, or 5 minutes.

[0063] The first preset pressure condition is set based on the rated differential pressure of the exhaust secondary side of the system. The process by which the controller detects whether the pipeline pressure value meets the first preset pressure condition can be as follows: the controller determines the difference between the secondary side supply pressure and the secondary side return pressure in the pipeline pressure value; if the difference is not less than the first preset pressure condition, the controller determines that the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition. The controller then determines that the initial liquid replenishment is complete. If the difference is less than the first preset pressure condition, the controller continues to execute step S3022.

[0064] S3023, after the circulation pump has been shut down for a second duration, the replenishment pump is started to replenish the secondary test pipeline. When the secondary side return pressure value in the pipeline pressure value is greater than the second preset target pressure value, the circulation pump is restarted at the first target speed until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

[0065] After the circulation pump is shut down, the system remains stationary for a second period of time to allow the pressure in the secondary side pipeline to stabilize. Then, the pressure in the secondary side pipeline is checked again to see if it is less than the first preset target pressure value. If the pipeline pressure is not less than the first preset target pressure value, the circulation pump is restarted and step S3021 continues. If the pipeline pressure is less than the first preset target pressure value, the replenishment pump system is started to replenish the liquid. During the replenishment process, if the pressure in the secondary side pipeline is detected to be greater than or equal to the second preset target pressure value, the replenishment is stopped, and the circulation pump is restarted. This continues until the circulation pump has run for a first period of time. If the pressure in the secondary side pipeline meets the first preset pressure condition, the venting and replenishment process is complete.

[0066] The second duration can be set as needed, and in this embodiment, the second duration is not specifically limited. For example, the second duration can be 1 minute, 2 minutes, or 5 minutes, etc.

[0067] It should be noted that after the initial injection and venting mode is activated, the controller can also monitor the actual flow rate of coolant in the secondary side pipeline in real time via the flow meter in the monitoring module. Accordingly, when venting air from the secondary side pipeline through the vent valve, the flow rate in the secondary side pipeline is also detected by the flow meter. When the flow rate in the secondary side pipeline is lower than a preset value, the circulation pump stops operating.

[0068] In this embodiment, during the initial liquid injection and venting mode, the liquid injection status of the secondary side pipeline and the liquid storage tank is monitored. After the initial liquid injection of the secondary side pipeline and the liquid storage tank is completed, the circulation pump is started. The circulation pump drives the coolant in the system to circulate in the secondary side pipeline, thereby causing the gas to be automatically discharged through the vent valve of the secondary side pipeline. Furthermore, during the operation of the circulation pump, the liquid cooling system is replenished after venting by detecting the pipeline pressure value of the secondary side pipeline. In this way, no manual intervention by the engineer is required during the venting and replenishment process. The liquid cooling system can automatically vent, which improves the efficiency of venting and replenishment, ensures that the liquid cooling system can be completely vented, and makes the subsequent operation of the liquid cooling system stable. Moreover, by automatically venting and replenishing the liquid cooling system, there are no restrictions on the layout location of the liquid cooling system, making the layout method and location of the liquid cooling system more flexible.

[0069] It should be noted that, to ensure complete venting, after completing the above-mentioned liquid replenishment and venting process, the controller can also control the circulating pump for trial operation. During the trial operation, the pipeline pressure value of the secondary side will continue to be monitored to prevent problems with liquid replenishment. See also Figure 6 The diagram illustrates a flow chart of a liquid injection and venting method provided in an exemplary embodiment. By way of example and not limitation, the method is applied to a controller that controls the aforementioned liquid cooling system to implement the liquid injection and venting method.

[0070] S601, the controller starts the injection pump to inject liquid into the secondary side pipeline and the storage tank until the injection into the secondary side pipeline and the storage tank is completed.

[0071] This step is based on the same principle as step S301, and will not be repeated here.

[0072] S602, the controller starts the circulation pump, making the circulation pump run at a first preset speed, venting the secondary side pipeline through the vent valve, and controlling the replenishment pump to replenish the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

[0073] This step is based on the same principle as step S302, and will not be repeated here.

[0074] S603, the controller controls the circulating pump to run at a second preset speed, and controls the replenishment pump to replenish the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the second preset pressure condition, wherein the second preset speed is greater than the first preset speed.

[0075] In this step, the controller enters the trial operation phase, that is, it controls the circulation pump to run at the second preset speed. If the pipeline pressure value in the system can remain stable during the operation of the circulation pump at the second preset speed, it is determined that all the gas has been discharged, and then the first liquid injection and venting mode is exited.

[0076] In this embodiment, the second preset speed is greater than the first preset speed. In some embodiments, the second preset speed can be the rated speed of the circulating pump. Different circulating pumps have different rated speeds; therefore, in this application embodiment, the value of the rated speed is not specifically limited.

[0077] In some embodiments, if the pipeline pressure value is detected to meet the second preset pressure condition, the controller controls the circulating pump to continue running for a third period of time.

[0078] See Figure 5 When the pressure value of the pipeline is detected to meet the first preset pressure condition, in order to ensure complete venting, the controller can control the circulating pump to continue running at the current speed for a third time. After the controller controls the circulating pump to run for the third time, the controller then switches the speed of the circulating pump to the second speed.

[0079] The third duration can be set as needed, and in this embodiment, the third duration is not specifically limited. For example, the third duration can be 1 minute, 2 minutes, or 5 minutes, etc.

[0080] In this step, the controller can directly switch the rotational speed of the circulating pump from the first speed to the second speed. In other embodiments, please refer to... Figure 5 After the controller controls the circulating pump to continue running for a third period of time, it can first shut down the circulating pump and re-execute step S302, and re-determine whether the above conditions are met. If not, the liquid is replenished again. If the conditions are met, the step of switching the speed of the circulating pump to the second speed is executed.

[0081] If the circulating pump runs at the second speed for a fourth time, and the controller detects that the pipeline pressure value of the secondary side pipeline does not meet the second preset pressure condition, the controller will execute the step of shutting down the circulating pump and replenishing the liquid again.

[0082] Please continue reading Figure 5 After the circulating pump has been running at the second speed for four hours, the controller checks whether the current detected pressure value of the secondary side pipeline meets the second preset pressure condition. This second preset pressure condition is greater than the first preset pressure condition. Accordingly, the controller determines the difference between the secondary side supply pressure and the secondary side return pressure in the pipeline pressure value. If this difference is not less than the second preset pressure condition, the controller determines that venting and replenishment are complete; if the pipeline pressure value is less than the second preset pressure condition, the controller controls the replenishment pump to replenish the liquid again.

[0083] The fourth duration can be set as needed, and in this embodiment, the fourth duration is not specifically limited. For example, the fourth duration can be 1 minute, 2 minutes, or 5 minutes, etc.

[0084] If the circulating pump runs at the second speed for a fourth time, and the controller detects that the pipeline pressure value of the secondary side pipeline meets the second preset pressure condition, it determines that the liquid replenishment is complete and shuts down the circulating pump.

[0085] In some embodiments, the controller can directly shut down the circulation pump when it detects that the pressure value of the secondary side pipeline meets the second preset pressure condition. In other embodiments, the controller can also continue to control the circulation pump to run at the second preset speed for a fifth time period before shutting it down. This fifth time period can be set as needed, and in this embodiment, it is not specifically limited. For example, the fifth time period can be 1 minute, 2 minutes, or 5 minutes.

[0086] One point to note is that, see Figure 5After the initial filling phase, the controller first detects the outlet direction of the electric three-way valve. If the outlet direction is towards filling the reservoir, it enters the venting phase. If the outlet direction is towards filling the secondary pipeline, it switches the outlet direction to fill the reservoir before entering the venting phase. This ensures that replenishment occurs within the reservoir, preventing rapid replenishment into the secondary pipeline that could lead to a rapid increase in coolant levels and overflow.

[0087] In this embodiment, during the initial liquid injection and venting mode, the liquid injection status of the secondary side pipeline and the liquid storage tank is monitored. After the initial liquid injection of the secondary side pipeline and the liquid storage tank is completed, the circulation pump is started. The circulation pump drives the coolant in the system to circulate in the secondary side pipeline, thereby causing the gas to be automatically discharged through the vent valve of the secondary side pipeline. Furthermore, during the operation of the circulation pump, the liquid cooling system is replenished after venting by detecting the pipeline pressure value of the secondary side pipeline. In this way, no manual intervention by the engineer is required during the venting and replenishment process. The liquid cooling system can automatically vent, which improves the efficiency of venting and replenishment, ensures that the liquid cooling system can be completely vented, and makes the subsequent operation of the liquid cooling system stable. Moreover, by automatically venting and replenishing the liquid cooling system, there are no restrictions on the layout location of the liquid cooling system, making the layout method and location of the liquid cooling system more flexible.

[0088] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0089] For example, one embodiment is: The liquid injection and venting method described in this embodiment is applied to the liquid cooling system of a CDU unit. The method consists of three stages: the initial liquid injection stage, the initial venting stage, and the trial operation stage. The actual secondary-side return pressure P1 and actual secondary-side supply pressure P2 of the coolant in the secondary-side supply pipeline 112 and secondary-side return pipeline 111 are monitored by the secondary-side return pressure sensor 132 and secondary-side supply pressure sensor 131 in the monitoring module. The actual flow rate Q of the coolant in the secondary-side pipeline 11 is monitored by the secondary-side flow meter 137 in the control module. The actual coolant level H in the storage tank 141 is monitored by the high-level sensor 142 and low-level sensor 143 in the storage module 14.

[0090] The controller presets the target operating pressure value PL, the preset operating pressure return value PLd, the preset high liquid level value H1 of the storage tank, the preset low liquid level value H2 of the storage tank, the preset rotational speed N1 of the circulation pump 1211 and circulation pump 1221 during the initial venting stage, the preset initial establishment value △PD1 of the secondary side pressure difference, the preset running time T1 of the venting stage, the preset running time T2 of the venting stage, the preset duration of pump stop venting T3, the preset establishment value △PD2 of the secondary side pressure difference, the preset duration of the trial operation stage T4, the preset duration of the trial operation stage T5, and the preset rated rotational speed N2 of the circulation pump.

[0091] After enabling the initial liquid injection and venting mode via the controller, the CDU unit will first enter the initial liquid injection stage. There are two injection methods in the initial liquid injection stage, depending on the actual secondary side return pressure P1, the actual secondary side supply pressure P2, and the actual liquid level H. When the actual secondary side return pressure P1 and the actual secondary side supply pressure P2 are less than the target operating pressure PL, the outlet direction of the electric three-way valve 164 changes to connect with the second injection check valve 163. At this point, the controller confirms that the outlet direction of the electric three-way valve 164 is in place before the injection pump 161 is allowed to start. The pump will only stop when the secondary side return pressure P1 and the actual secondary side supply pressure P2 are greater than or equal to the target operating pressure PL + the operating pressure return value PLd. This is the initial rapid liquid injection mode. When the secondary side return pressure P1 and the actual secondary side supply pressure P2 are greater than the target operating pressure PL and the actual liquid level H is less than H1, the outlet direction of the electric three-way valve 164 changes to connect with the first injection check valve 162. At this point, the controller confirms that the outlet direction of the electric three-way valve 164 is in place before the injection pump 161 is allowed to start. It will continue until the actual liquid level H is greater than or equal to H1, which constitutes the initial injection method. After completing any of the above injection methods, the CDU unit ends the initial injection phase.

[0092] After the initial liquid injection phase, the CDU unit enters the initial venting phase. During this phase, the coolant circulates at a certain flow rate through the secondary side pipeline 11 and the equipment's cold plates, automatically expelling any accumulated air through the vent valve 113 in the secondary side pipeline. The venting process in this phase involves driving the circulation pump at its initial venting speed N1 for a duration T1. Then, it is checked whether the actual secondary side supply pressure P2 - actual secondary side return pressure P1 ≥ the initial secondary side pressure differential establishment value ΔPD1. If this condition is met, the circulation pump continues for another venting phase for a duration T2 before stopping, entering the trial operation phase. If the condition is not met, the circulation pump is stopped for a duration T3, and then restarted for the venting process until the initial secondary side pressure differential establishment condition is met. During the initial venting phase, due to multiple venting processes, both the actual secondary side return pressure P1 and the actual secondary side supply pressure P2 at the time the circulating pump stops may be less than the target operating pressure PL. Therefore, a replenishment process will be initiated first. Only when the secondary side return pressure P1 and the actual secondary side supply pressure P2 are greater than or equal to the target operating pressure PL plus the operating pressure return value PLd can the venting process begin. The circulating pumps mentioned above can be a first circulating pump 1211 and a second circulating pump 1221. During the initial venting phase, the first circulating pump 1211 and the second circulating pump 1221 will be vented sequentially. The secondary side flow meter 137 will detect the actual flow rate Q of the first circulating pump 1211 and the second circulating pump 1221 during the venting process to ensure they are operating normally and to implement a protection function. For example, if the actual flow rate Q = 0, the corresponding circulating pump can be stopped to prevent dry running.

[0093] Upon entering the trial operation phase, the first circulation pump 1211 and the second circulation pump 1221 are run at their rated speed N2 for a trial operation period of T4. The actual flow rate Q is monitored, and it is simultaneously checked whether the actual secondary side supply pressure P2 - the actual secondary side return pressure P1 ≥ the secondary side pressure difference establishment value △PD2 is met. If the condition is met, the circulation pumps continue running for another trial operation period of T5 before being stopped. A message is displayed indicating that the first liquid injection and venting are complete, and the controller exits the first liquid injection and venting mode.

[0094] Figure 7 This is a schematic diagram of a controller provided in an exemplary embodiment of this application. Figure 7 As shown, the controller 7 in this embodiment includes a processor 70, a memory 71, and a computer program 72 stored in the memory 71 and executable on the processor 70, such as a liquid injection and venting program. When the processor 70 executes the computer program 72, it implements the steps in the various liquid injection and venting method embodiments described above, for example... Figure 3The steps S301 to S304 are shown. Alternatively, when the processor 70 executes the computer program 72, it implements the functions of each unit in the above-described module embodiments.

[0095] For example, the computer program 72 may be divided into one or more units, which are stored in the memory 71 and executed by the processor 70 to complete the present application. The one or more units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 72 in the controller 7.

[0096] The controller 7 may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art will understand that... Figure 7 This is merely an example of controller 7 and does not constitute a limitation on controller 7. It may include more or fewer components than shown, or combine certain components, or different components. For example, controller 7 may also include input / output devices, network access devices, buses, etc.

[0097] The processor 70 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0098] The memory 71 can be an internal storage unit of the controller 7, such as a hard disk or RAM of the controller 7. The memory 71 can also be an external storage device of the controller 7, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the controller 7. Furthermore, the memory 71 can include both internal storage units and external storage devices of the controller 7. The memory 71 is used to store the computer program and other programs and data required by the terminal device. The memory 71 can also be used to temporarily store data that has been output or will be output.

[0099] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments 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. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0100] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0101] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0102] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, 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 or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0103] 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 network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0104] 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.

[0105] If the integrated module / 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, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0106] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the above method embodiments.

[0107] This application also provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the various method embodiments above.

[0108] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A liquid injection degassing method characterized by comprising: The application is applied to a liquid cooling system, the liquid cooling system comprises a secondary side pipeline for supplying liquid to a device cooling plate, a liquid storage tank for storing liquid and supplementing the secondary side pipeline with liquid, a liquid injection pump for driving liquid to inject into the secondary side pipeline and the liquid storage tank, a circulating pump for driving liquid circulating flow of the secondary side pipeline, and a liquid supplement pump for driving the liquid storage tank to supplement the secondary side pipeline with liquid, wherein an exhaust valve is arranged in the secondary side pipeline; The method comprises: starting the liquid injection pump to inject liquid into the secondary side pipeline and the liquid storage tank until the liquid injection into the secondary side pipeline and the liquid storage tank is completed; starting the circulating pump to operate at a first preset rotating speed, exhausting the secondary side pipeline through the exhaust valve, and controlling the liquid supplement pump to supplement the secondary side pipeline with liquid based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets a first preset pressure condition.

2. The liquid injection and gas exhausting method according to claim 1, wherein After the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition, the method further comprises: controlling the circulating pump to operate at a second preset rotating speed, and controlling the liquid supplement pump to supplement the secondary side pipeline with liquid based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets a second preset pressure condition, wherein the second preset rotating speed is greater than the first preset rotating speed.

3. The liquid injection and air exhausting method according to claim 1 or 2, wherein The secondary side pipeline is further provided with a flow meter, and the method comprises: when the secondary side pipeline is exhausted through the exhaust valve, the flow of the secondary side pipeline is also detected through the flow meter, and the circulating pump is stopped when the flow of the secondary side pipeline is lower than a preset value.

4. The method of claim 1, wherein, The liquid injection pump is connected to the secondary side pipeline and the liquid storage tank through a quick connector respectively; starting the liquid injection pump to inject liquid into the secondary side pipeline and the liquid storage tank until the liquid injection into the secondary side pipeline and the liquid storage tank is completed, specifically comprising: obtaining the pipeline pressure value of the secondary side pipeline, starting the liquid injection pump to inject liquid into the secondary side pipeline when the pipeline pressure value is less than a first preset target pressure value until the pipeline pressure value is greater than or equal to a second preset target pressure value; obtaining the liquid level height of the liquid storage tank, starting the liquid injection pump to inject liquid into the liquid storage tank when the liquid level height is less than a preset liquid level height value until the liquid level height of the liquid storage tank is greater than or equal to the preset liquid level height value.

5. The method of claim 4, wherein, The pipeline pressure value of the secondary side pipeline comprises a secondary side liquid return pressure value and a secondary side liquid supply pressure value, and determining that the pipeline pressure value is greater than or equal to a second preset target pressure value comprises: determining the sum of a preset operable pressure target value of the secondary side pipeline and a preset operable pressure return difference value as the second preset target pressure value; if the secondary side liquid return pressure value in the pipeline pressure value is greater than the second preset target pressure value, and the secondary side liquid supply pressure value in the pipeline pressure value is greater than the second preset target pressure value, it is determined that the pipeline pressure value is greater than or equal to the second preset target pressure value.

6. The method of claim 1, wherein, The control of the liquid supplement pump to supplement liquid to the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition comprises: When the running duration of the circulating pump reaches the first duration, if the pipeline pressure value of the secondary side pipeline does not meet the first preset pressure condition, the circulating pump is turned off; After the turning-off duration of the liquid supplement pump reaches the second duration, the circulating pump is restarted until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

7. The method of claim 1, wherein, The control of the liquid supplement pump to supplement liquid to the secondary side pipeline based on the pipeline pressure value of the secondary side pipeline until the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition comprises: The difference between the secondary side liquid supply pressure value and the secondary side liquid return pressure value in the pipeline pressure value is determined; If the difference is not less than the first preset pressure condition, it is determined that the pipeline pressure value of the secondary side pipeline meets the first preset pressure condition.

8. A liquid cooling system, characterized by, The system comprises a secondary side pipeline, a power module, a monitoring module, a liquid storage module, a liquid supplement module and a liquid injection module. The secondary side pipeline is in communication with a device cold plate and is used to supply liquid to the device cold plate, and the device cold plate is used to cool and cool a terminal device. The power module comprises a circulating pump, which is used to provide driving force for liquid coolant in the system so that the coolant can circulate in the system. The monitoring module comprises a pressure detection unit, which is used to detect the pipeline pressure value of the secondary side pipeline. The liquid storage module comprises a liquid storage tank and a liquid level sensor, the liquid storage tank is used to store the coolant in the system, and the liquid level sensor is used to detect the liquid surface height of the coolant in the liquid storage tank. The liquid supplement module comprises a liquid supplement pump, which is used to supplement the coolant to the system after the gas in the system is removed. The liquid injection module comprises a liquid injection pump, which is used to drive the liquid coolant to inject liquid to the secondary side pipeline and the liquid storage tank.

9. A controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the liquid injection and gas removal method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 9. The computer program is executed by the processor to realize the liquid injection and gas removal method according to any one of claims 1 to 7.

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