Online self-cleaning method and device for cooling liquid of liquid cooling system

Abstract

The invention relates to the field of operation and maintenance of liquid cooling systems, in particular to an online self-cleaning method and device for cooling liquid of a liquid cooling system. The method comprises the steps that the initial PH value of cooling liquid in the liquid cooling system is acquired, and the real-time PH value of the cooling liquid in the liquid cooling system is acquired; presetting an opening strategy, a closing strategy and a circulation strategy; and the controller is used for controlling the liquid supplementing pump and the electromagnetic valve to be opened according to the opening strategy, the initial PH value and the real-time PH value, controlling the liquid supplementing pump and the electromagnetic valve to be closed according to the closing strategy, and controlling the liquid supplementing pump and the electromagnetic valve to be circularly opened or closed according to the circulation strategy. And completing online self-cleaning of the cooling liquid of the liquid cooling system. The method is used for realizing on-line non-stop self-cleaning of the cooling liquid of the liquid cooling system and ensuring normal and reliable operation of the liquid cooling system.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling system operation and maintenance, and more particularly to an online self-cleaning method and device for coolant in a liquid cooling system. Background Art

[0002] Liquid cooling systems play a key role in data center temperature control. They maintain optimal temperatures through cold exchange, ensuring efficient and stable operation. Given that data centers must operate continuously for extended periods of time, liquid cooling systems must also maintain continuous operation. However, after extended use, the coolant in a liquid cooling system may become contaminated or deteriorate, reducing its heat dissipation performance. This can lead to a decrease in the cooling effectiveness of the system, necessitating coolant maintenance and replacement.

[0003] In existing technology, the conventional practice is to regularly shut down the liquid cooling system for maintenance to replace the coolant. However, this practice results in the liquid cooling system being unable to provide cooling services to the data center during maintenance, which can lead to uncontrolled temperature and abnormal operation of the data center. Therefore, it is necessary to make necessary improvements to the maintenance methods of the liquid cooling system coolant. Summary of the Invention

[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a method and device for online self-cleaning of the coolant in a liquid cooling system, which is used to realize online self-cleaning of the coolant in the liquid cooling system without stopping the machine, thereby ensuring the normal and reliable operation of the liquid cooling system.

[0005] According to a first aspect of the present application, a method for online self-cleaning of coolant in a liquid cooling system is provided, wherein the liquid cooling system is provided with a pH meter for measuring the pH value of the coolant in the liquid cooling system, a refilling pump for replenishing coolant to the liquid cooling system, and a solenoid valve for controlling the discharge of coolant in the liquid cooling system; the method comprises:

[0006] Obtaining an initial pH value of the coolant in the liquid cooling system, and obtaining a real-time pH value of the coolant in the liquid cooling system;

[0007] Preset opening strategy, closing strategy and loop strategy;

[0008] The rehydration pump and the solenoid valve are controlled to be opened according to the opening strategy, the initial pH value and the real-time pH value, and are controlled to be closed according to the closing strategy. The rehydration pump and the solenoid valve are controlled to be cyclically opened or closed according to the circulation strategy to complete the online self-cleaning of the coolant of the liquid cooling system.

[0009] It is understandable that by designing a pH meter in the liquid cooling system to monitor the changes in the pH value of the coolant in the liquid cooling system in real time, and combining it with the preset opening strategy, closing strategy and circulation strategy, the opening and closing states of the refill pump and the solenoid valve can be intelligently controlled, thereby realizing automatic replenishment and drainage circulation of the coolant in the liquid cooling system, thereby effectively removing impurities and sediments in the coolant in the liquid cooling system, maintaining the chemical stability of the coolant in the liquid cooling system, ensuring the long-term, efficient and stable operation of the liquid cooling system, and completing cleaning and maintenance without human intervention.

[0010] Optionally, controlling the opening of the infusion pump and the solenoid valve according to the opening strategy, the initial pH value, and the real-time pH value includes:

[0011] If the opening strategy is triggered based on the initial pH value and the real-time pH value, the fluid infusion pump is controlled to be continuously turned on, and the solenoid valve is controlled to be continuously turned on or intermittently turned on, and at the same time, the duration of the fluid infusion pump being turned on and the total opening time of the solenoid valve are recorded; at the same time, the number of times the fluid infusion pump is turned on is recorded as the number of cleaning times.

[0012] It is understandable that by monitoring the initial pH value and real-time pH value of the coolant in the liquid cooling system, and triggering the opening strategy based on the initial pH value and the real-time pH value, the rehydration pump is automatically and continuously turned on and the continuous or intermittent opening of the solenoid valve is flexibly controlled. At the same time, the duration of the rehydration pump opening and the total opening time of the solenoid valve are accurately recorded, and the number of times the rehydration pump is started is used as the number of cleaning times, thereby achieving precise control of the pH value of the coolant and quantitative management of the self-cleaning process of the coolant in the liquid cooling system, thereby effectively improving the cleaning efficiency and operation stability of the coolant in the liquid cooling system.

[0013] Optionally, triggering the activation strategy based on the initial pH value and the real-time pH value includes:

[0014] Preset pH threshold;

[0015] Obtaining a pH difference between the initial pH value and the real-time pH value;

[0016] If the pH difference is greater than or equal to the pH threshold, the activation strategy is triggered.

[0017] It is understandable that by presetting the pH threshold and calculating the difference between the initial pH value and the real-time pH value, the start-up strategy is triggered when the pH difference exceeds the threshold, thereby achieving accurate perception and rapid response to changes in the pH of the coolant, effectively avoiding the performance degradation of the liquid cooling system or pipeline corrosion caused by abnormal pH values, and ensuring that the coolant of the liquid cooling system operates efficiently in a stable chemical environment.

[0018] Optionally, controlling the infusion pump and the solenoid valve to close according to the closing strategy includes:

[0019] If the closing strategy is triggered based on the current duration of the infusion pump being on and / or the current total opening time of the solenoid valve, the infusion pump and the solenoid valve are closed; at the same time, the duration of the infusion pump being off is recorded; and at the same time, the initial pH value is updated with the pH value currently detected by the pH meter.

[0020] It is understandable that by obtaining the duration of the fluid replenishment pump being on and the total opening time of the solenoid valve, when the duration of the fluid replenishment pump being on and / or the total opening time of the solenoid valve reaches the preset closing strategy, the fluid replenishment pump and the solenoid valve are closed, and the duration of the fluid replenishment pump being closed is recorded synchronously. At the same time, the current pH value is updated to the initial pH value, thereby achieving precise control of the coolant self-cleaning process of the liquid cooling system and dynamic calibration of the coolant status, ensuring that the liquid cooling system always grasps the latest status of the coolant, and improving the reliability and efficiency of the liquid cooling system maintenance.

[0021] Optionally, triggering the closing strategy based on the current duration of the infusion pump being turned on and / or the current total opening time of the solenoid valve includes:

[0022] A plurality of fluid infusion pump opening time thresholds and a plurality of solenoid valve opening time thresholds are preset, and each of the cleaning times corresponds to one fluid infusion pump opening time threshold and one solenoid valve opening time threshold;

[0023] Obtaining a corresponding fluid infusion pump opening time threshold and a corresponding solenoid valve opening time threshold according to the cleaning times;

[0024] If the current duration of the fluid infusion pump being turned on is greater than or equal to the corresponding fluid infusion pump turning on time threshold, and / or the current total turning on time of the solenoid valve is greater than or equal to the corresponding solenoid valve turning on time threshold, the closing strategy is triggered.

[0025] It is understandable that by presetting the fluid replenishment pump opening time threshold and the solenoid valve opening time threshold associated with the number of cleaning times, and automatically matching the corresponding thresholds according to the current number of cleaning times, the closing strategy is triggered when the current duration of the fluid replenishment pump opening and / or the current total opening time of the solenoid valve reaches or exceeds the corresponding threshold, thereby achieving refined control of the self-cleaning process, ensuring that the duration and intensity of each coolant cleaning match the cleaning status of the liquid cooling system, thereby improving the accuracy and reliability of liquid cooling system maintenance.

[0026] Optionally, a greater number of cleaning times corresponds to a greater threshold for opening the fluid infusion pump and a greater threshold for opening the solenoid valve.

[0027] It is understandable that by dynamically adjusting the opening time thresholds of the rehydration pump and the solenoid valve, the corresponding thresholds increase with the number of cleaning times, ensuring that as the number of system cleaning times increases, the duration and intensity of each self-cleaning also gradually increase, thereby effectively adapting to the maintenance needs of the liquid cooling system at different stages, extending the life of the liquid cooling system coolant and coolant-related equipment, and optimizing the circulation and cleaning effect of the liquid cooling system coolant.

[0028] Optionally, controlling the fluid infusion pump and the solenoid valve to cyclically open or close according to the circulation strategy includes:

[0029] If the circulation strategy is triggered based on the current duration of the fluid replenishment pump being closed, the real-time pH value of the coolant in the liquid cooling system is obtained, and the fluid replenishment pump and the solenoid valve are controlled to be opened according to the opening strategy, the initial pH value and the real-time pH value, and the fluid replenishment pump and the solenoid valve are controlled to be closed according to the closing strategy.

[0030] It is understandable that by real-time monitoring of the duration of the rehydration pump being shut down, when the duration of the rehydration pump being shut down triggers the circulation strategy, the real-time pH value of the coolant in the liquid cooling system is automatically obtained, and combined with the initial pH value, it is determined whether the above-mentioned self-cleaning process needs to be recirculated, thereby realizing the periodic cycle opening and closing control of the rehydration pump and the solenoid valve, thereby realizing the circulation self-cleaning of the coolant in the liquid cooling system; this dynamic adjustment mechanism ensures that the liquid cooling system can continuously optimize the cleaning cycle according to the changes in the coolant state, and maintain the chemical stability and liquid cooling efficiency of the coolant in the liquid cooling system.

[0031] Optionally, triggering the circulation strategy based on the current duration of the fluid infusion pump being turned off includes:

[0032] Preset a number of fluid infusion pump off time thresholds, each cleaning number corresponds to one of the fluid infusion pump off time thresholds;

[0033] Obtaining a corresponding fluid infusion pump shut-off time threshold according to the cleaning times;

[0034] If the current duration of the infusion pump being turned off is greater than or equal to the corresponding infusion pump turning off time threshold, the cycle strategy is triggered.

[0035] Understandably, by presetting a refill pump off-time threshold dynamically linked to the number of cleanings, a cycling strategy is triggered when the refill pump off-time reaches the corresponding threshold, re-executing the aforementioned self-cleaning process. This hierarchical control mechanism based on the number of cleanings ensures that the liquid cooling system can dynamically adjust its on and off cycles based on maintenance needs, enabling continuous monitoring and precise adjustment of the coolant status, thereby ensuring the long-term stable operation of the liquid cooling system.

[0036] Optionally, the greater the number of cleaning times, the greater the corresponding fluid infusion pump shutdown time threshold.

[0037] It's understandable that by gradually increasing the refill pump's shutdown time threshold, the cooling system's cleaning process enters a longer dormant period as the number of cleanings increases. This reduces wear and tear on the cooling system from frequent pH measurements and judgments, while also accommodating the longer stabilization period required by the cooling system as the cleaning process progresses. This dynamic adjustment mechanism effectively balances cleaning efficiency with equipment maintenance requirements, extending the cooling system's lifespan and optimizing energy management.

[0038] According to a second aspect of the present application, a device for online self-cleaning of a liquid cooling system is provided, the device comprising:

[0039] A pH value acquisition module is used to acquire an initial pH value of the coolant in the liquid cooling system and to acquire a real-time pH value of the coolant in the liquid cooling system;

[0040] Preset strategy module, used to preset opening strategy, closing strategy and loop strategy;

[0041] The control cleaning module is used to control the opening of the fluid replenishment pump and the solenoid valve according to the opening strategy, the initial pH value and the real-time pH value, and to control the closing of the fluid replenishment pump and the solenoid valve according to the closing strategy, and to control the fluid replenishment pump and the solenoid valve to cyclically open or close according to the circulation strategy to complete the online self-cleaning of the coolant of the liquid cooling system.

[0042] Based on any one of the above aspects, an embodiment of the present application provides a method and device for online self-cleaning of coolant in a liquid cooling system, wherein the liquid cooling system is provided with a pH meter for measuring the pH value of the coolant in the liquid cooling system, a rehydration pump for replenishing coolant to the liquid cooling system, and a solenoid valve for controlling the discharge of coolant in the liquid cooling system; the method comprises: obtaining the initial pH value of the coolant in the liquid cooling system, and obtaining the real-time pH value of the coolant in the liquid cooling system; presetting an opening strategy, a closing strategy, and a circulation strategy; controlling the rehydration pump and the solenoid valve to open according to the opening strategy, the initial pH value, and the real-time pH value, and controlling the rehydration pump and the solenoid valve to close according to the closing strategy, and controlling the rehydration pump and the solenoid valve to cyclically open or close according to the circulation strategy to complete the online self-cleaning of the coolant in the liquid cooling system. The present application can achieve the following benefits:

[0043] By using a pH meter to monitor the pH value of the coolant in the liquid cooling system in real time, the optimal time point for coolant replacement can be obtained, and the coolant in the liquid cooling system can be sparsely replaced online at the optimal time point for coolant replacement, thereby achieving online self-cleaning of the coolant in the liquid cooling system without stopping the system, ensuring that the liquid cooling system can operate normally for a long time, thereby ensuring that the data center that provides liquid cooling services based on the liquid cooling system can operate safely and reliably. The method and device provided in the present application can achieve the advantages of optimal replacement time point detection, online self-cleaning, dynamic graded self-cleaning, and unmanned self-cleaning of the coolant in the liquid cooling system, can meet the full life cycle operation of the liquid cooling system and the data center, and can improve the industry competitiveness of products related to the liquid cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] Figure 1 This is a schematic structural diagram of a liquid cooling system provided in this embodiment.

[0046] Figure 2 This is a flow chart of an online self-cleaning method for coolant in a liquid cooling system provided in this embodiment.

[0047] Figure 3 This embodiment provides a flowchart of a triggering activation strategy.

[0048] Figure 4 This embodiment provides a flowchart of a triggering shutdown strategy.

[0049] Figure 5 This embodiment provides a flowchart of a trigger loop strategy.

[0050] Figure 6 This embodiment provides a functional module diagram of an online self-cleaning device for coolant in a liquid cooling system.

[0051] Icons: 01-liquid storage tank, 02-liquid replenishing pump, 03-first one-way valve, 04-drain valve, 05-circulation pump, 06-second one-way valve, 07-solenoid valve, 08-heat exchanger, 09-main control board, 10-PH meter, 11-proportional valve, 12-shock absorber pipe, 13-load. DETAILED DESCRIPTION

[0052] The figures in this application are for illustrative purposes only and are not to be construed as limiting the present application. To better illustrate the following embodiments, some components in the figures may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will appreciate that some well-known structures and their descriptions may be omitted from the figures.

[0053] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] In today's era of rapid advancements in computer technology, data centers, as the core locations for massive amounts of information exchange, are constantly interacting with each other, requiring them to operate continuously. This constant operation inevitably generates significant amounts of heat, which can negatively impact performance. Effectively dissipating this heat and maintaining a consistent temperature within the data center has become crucial for ensuring long-term, reliable, and stable operation. Therefore, the liquid cooling systems that provide cooling for data centers must be tailored to their operational characteristics, ensuring uninterrupted heat transfer and maintaining normal operation.

[0056] Liquid cooling systems primarily rely on circulating coolant to absorb heat generated by various loads within a data center. However, over extended periods of operation, impurities and sediment may accumulate in the coolant. These changes can negatively impact the system's performance, making regular coolant replacement essential.

[0057] In the prior art, conventional liquid cooling systems usually use a regular shutdown maintenance method to replace the coolant, but this method has the following disadvantages:

[0058] Replacing the coolant by shutting down the system for maintenance will directly affect the cooling of the liquid cooling system, causing abnormal temperatures in the data center that relies on the liquid cooling system to provide liquid cooling services. It also increases the manpower required to maintain the liquid cooling system.

[0059] The use of downtime maintenance cannot analyze the status of the coolant in the liquid cooling system in real time, cannot replace the coolant at the optimal coolant replacement time, and cannot effectively perform the coolant replacement work.

[0060] Therefore, it is necessary to make necessary improvements to the method of replacing the coolant in the liquid cooling system.

[0061] This embodiment provides a technical solution that can solve the above-mentioned problem. The specific implementation methods of this application are described in detail below with reference to the accompanying drawings.

[0062] For example, Figure 1 As shown, Figure 1 A schematic diagram of the structure of a liquid cooling system provided in an embodiment of the present application.

[0063] The liquid cooling system includes a loop pipe and a liquid replenishing pipe, as well as a main control board 09 for performing control work and executing relevant strategies.

[0064] The heat exchanger 08, the circulation pump 05, the second one-way valve 06, and the pH meter 10 are connected in sequence to form a partial loop in the loop pipeline, and the proportional valve 11 and the shock absorber pipe 12 are connected in sequence and connected in parallel with the pH meter 10, and the load 13 is connected in parallel with the pH meter 10. The loop and parallel pipelines formed by the heat exchanger 08, the circulation pump 05, the second one-way valve 06, the pH meter 10, the proportional valve 11, the shock absorber pipe 12 and the load 13 together constitute the loop pipeline of the liquid cooling system.

[0065] The pH meter 10 measures the pH value of the coolant in the liquid cooling system. The load 13 is a device requiring cooling services from the liquid cooling system, which in this embodiment may be a data center. The other components mentioned in the loop piping are common components of a liquid cooling system. Their functions are well known to those skilled in the art and are not described here in detail.

[0066] The main control board 09 is connected to the rehydration pump 02, the solenoid valve 07, and the pH meter 10 via communication, and is used to control the start and stop of the rehydration pump 02 and the solenoid valve 07, as well as to control the detection operation of the pH meter 10. It is understood that the main control board 09 can also be connected to other components of the liquid cooling system. Since the control of these other components is not the focus of this application, they will not be described in detail here.

[0067] The pipeline between heat exchanger 08 and circulating pump 05 is also connected to a refill pipeline. The liquid storage tank 01, refill pump 02, and first one-way valve 03 are sequentially connected to form a refill pipeline, which is then connected to the pipeline between heat exchanger 08 and circulating pump 05. The liquid storage tank 01 is used to store clean coolant. When the coolant in the liquid cooling system needs to be cleaned and replaced, the coolant in the liquid cooling system can be refilled and diluted to achieve a clean effect. The main control board 09 can control the on / off of the refill pump 02. By controlling the on / off of the refill pump 02, whether and how much refill is added to the liquid cooling system is controlled.

[0068] A drain valve 04 is also connected between the inlet of the liquid replenishment pipe connecting to the loop pipe and the circulation pump 05. The drain valve 04 can quickly drain the coolant of the liquid cooling system and is suitable for draining the liquid during shutdown maintenance of the liquid cooling system.

[0069] Solenoid valve 07 is connected to the parallel pipe connecting proportional valve 11 and shock absorber pipe 12. This solenoid valve 07 can be used in conjunction with the refill pipe to properly drain the coolant from the liquid cooling system after the refill has been diluted. Solenoid valve 07 is controlled by main control board 09, which controls whether the liquid cooling system is drained and the amount of liquid drained. Solenoid valve 07 is suitable for use in a liquid cooling system using the method for online self-cleaning of coolant in a liquid cooling system provided in this application.

[0070] It is understandable that the liquid cooling system will also include other loop pipes, and other components necessary for the operation of the liquid cooling system will be installed in the other loop pipes and in the present loop pipes. The above complete composition can ensure the smooth operation of the liquid cooling system. However, because other loop pipes are common components of the liquid cooling system, these components are common components of the liquid cooling system, and the functions of these components are well known to those skilled in the art, they are not listed in the following text. Figure 1 The middle mark is drawn and will not be described here in detail.

[0071] like Figure 2 As shown, this embodiment provides a method for online self-cleaning of coolant in a liquid cooling system, which can be divided into the following steps:

[0072] S100, obtaining an initial pH value of the coolant in the liquid cooling system, and obtaining a real-time pH value of the coolant in the liquid cooling system;

[0073] Understandably, after prolonged use, the coolant in the liquid cooling system may become contaminated or deteriorate. Abnormalities in the coolant's chemical properties and impurities and sediment in the pipelines can affect the cooling performance of the liquid cooling system. Therefore, it is necessary to promptly replace or clean the coolant in the liquid cooling system after these conditions that affect the cooling performance occur in order to ensure long-term, reliable cooling service. In order to promptly detect the onset of conditions that affect the cooling performance, in this embodiment, a pH meter installed in the coolant loop pipeline of the liquid cooling system is used to measure the pH value. This is because the pH of the coolant can clearly reflect changes in the coolant's chemical properties, and measurement is simple and convenient, saving a lot of manpower and material resources.

[0074] In this embodiment, after the liquid cooling system is turned on, a pH meter can be used to measure the initial pH value of the liquid cooling system after it is turned on, and the real-time pH value of the coolant can be obtained in real time while the liquid cooling system is running. Preferably, in this embodiment, an interval can be preset, and after the pH meter measures the initial pH value, the real-time pH value is measured once after the interval, and the triggering of the relevant policy is determined based on the real-time pH value and the initial pH value. This can monitor the pH changes of the coolant in the liquid cooling system in real time, while also reducing redundant data from frequent pH value measurements, thereby improving the efficiency of the coolant in the liquid cooling system.

[0075] S200, preset opening strategy, closing strategy and cycle strategy;

[0076] In this embodiment, it is necessary to preset the start strategy, the closing strategy and the circulation strategy to guide the switching operation of the fluid replenishment pump 02 and the solenoid valve 07, as well as the circulation operation of the entire cleaning process of the coolant of the liquid cooling system, to ensure that the cleaning work of the coolant of the liquid cooling system can be automated and organized without affecting the normal liquid cooling work of the liquid cooling system, and to achieve high-efficiency operation.

[0077] S300, according to the opening strategy, the initial pH value and the real-time pH value, the fluid replenishment pump 02 and the solenoid valve 07 are controlled to open, and according to the closing strategy, the fluid replenishment pump 02 and the solenoid valve 07 are controlled to close, and according to the circulation strategy, the fluid replenishment pump 02 and the solenoid valve 07 are controlled to cyclically open or close to complete the online self-cleaning of the coolant of the liquid cooling system.

[0078] Specifically, the controlling the opening of the infusion pump 02 and the solenoid valve 07 according to the opening strategy, the initial pH value and the real-time pH value includes:

[0079] If the opening strategy is triggered based on the initial pH value and the real-time pH value, the fluid infusion pump 02 is controlled to be continuously opened, and the solenoid valve 07 is controlled to be continuously opened or intermittently opened, and at the same time, the duration of the opening of the fluid infusion pump 02 and the total opening time of the solenoid valve 07 are recorded; at the same time, the number of times the fluid infusion pump 02 is opened is recorded as the number of cleaning times.

[0080] In this embodiment, if the activation strategy is triggered based on the initial and real-time pH values, it indicates that the chemical properties of the coolant in the liquid cooling system have become abnormal and require cleaning. Therefore, it is necessary to activate the refill pump 02 to replenish and dilute the coolant in the liquid cooling system's loop pipeline with clean coolant with a normal pH value from the liquid storage tank 01. Simultaneously, the solenoid valve 07 responsible for draining the diluted coolant is opened to properly drain the refilled and diluted coolant, maintaining pressure balance in the loop pipeline and properly removing sediment and foreign matter.

[0081] In a preferred embodiment, the solenoid valve 07 can be opened in different ways. One is similar to the long-term opening of the infusion pump 02, opening and closing synchronously with the infusion pump 02. The other is to adopt an intermittent opening method, that is, after the solenoid valve 07 is opened for a first preset time, the solenoid valve 07 is closed, and after a second preset time, the solenoid valve 07 is opened again. The solenoid valve 07 can cycle between the open and closed states. The cyclic switching of the solenoid valve 07 between the open and closed states must occur within the duration of the infusion pump 02 being turned on. The first preset time and the second preset time can be set according to actual conditions and are not detailed here.

[0082] Preferably, in order to maintain the pressure balance of the coolant in the loop pipeline, it is necessary to coordinately adjust the opening of the refill pump 02 and the solenoid valve 07. However, the control of the opening is not the focus of this application and will not be described in detail here.

[0083] In this embodiment, when the infusion pump 02 is turned on, the duration of the infusion pump 02 being turned on is recorded simultaneously. When the solenoid valve 07 is permanently turned on, the duration of the solenoid valve 07 being turned on is recorded simultaneously, and the duration of the solenoid valve 07 being turned on is used as the total opening time of the solenoid valve 07. When the solenoid valve 07 is turned on intermittently, the duration of the solenoid valve 07 being turned on once is recorded at the beginning of the solenoid valve 07, and the duration of multiple openings is combined to form the total opening time of the solenoid valve 07.

[0084] In this embodiment, it is stipulated that each time the infusion pump 02 is turned on, it is recorded as a cleaning operation, and the number of cleaning times is the number of times the infusion pump 02 is turned on.

[0085] Specifically, if Figure 3As shown, triggering the activation strategy based on the initial pH value and the real-time pH value may include the following steps:

[0086] S311, preset pH threshold;

[0087] In this embodiment, a preset pH threshold is required to determine whether the chemical properties of the coolant in the liquid cooling system have changed, leading to an abnormality. It is understood that this pH threshold can be a single pH value or a pH value range, allowing for some fluctuation. Preferably, in this embodiment, the pH value range can be set to [0.6, 1.2].

[0088] It's understandable that because the real-time pH value of the cooling system's coolant is measured at intervals, the pH value generally doesn't fluctuate significantly within reasonable intervals. Therefore, with proper monitoring, the optimal time to clean the coolant will generally not be missed. To successfully determine the optimal time to clean the coolant, it's necessary to set the real-time pH value interval and pH value threshold based on operational experience or multiple tests.

[0089] S312, obtaining a pH difference between the initial pH value and the real-time pH value;

[0090] In this embodiment, obtaining the pH difference between the initial pH value and the real-time pH value can indicate the change in the pH value of the coolant in the current liquid cooling system compared to the initial pH value at the start-up. Preferably, the pH difference is the absolute value of the difference between the initial pH value and the real-time pH value.

[0091] S313: If the pH difference is greater than or equal to the pH threshold, trigger the activation strategy.

[0092] In this embodiment, the pH difference is greater than or equal to the pH threshold, indicating that the chemical properties of the coolant in the current liquid cooling system have changed compared to the initial state, and will affect the liquid cooling effect of the liquid cooling system. It is also the optimal time point for online cleaning and thinning, so the opening strategy is triggered to control the opening of the liquid replenishment pump 02 and the solenoid valve 07 to clean the coolant in the liquid cooling system.

[0093] Specifically, controlling the infusion pump 02 and the solenoid valve 07 to close according to the closing strategy includes:

[0094] If the closing strategy is triggered based on the current duration of the infusion pump 02 being turned on and / or the current total opening time of the solenoid valve 07, the infusion pump 02 and the solenoid valve 07 will be turned off; at the same time, the duration of the infusion pump 02 being turned off will be recorded; at the same time, the initial pH value will be updated with the pH value currently detected by the pH meter.

[0095] In this embodiment, if the shutdown strategy is triggered based on the current duration of the on-state of rehydration pump 02 and / or the current total on-state time of solenoid valve 07, it indicates that the coolant in the liquid cooling system has been cleaned once after the thinning of the infusion pump 02 and the balancing of the discharge of the solenoid valve 07. The rehydration pump 02 and solenoid valve 07 can then be shut down to save energy for the operation of the liquid cooling system. Simultaneously, when rehydration pump 02 is shut down, the duration of the shut-off period of rehydration pump 02 must be recorded; when solenoid valve 07 is shut down, the duration of the shut-off period of solenoid valve 07 must be recorded. Furthermore, the pH value currently detected by the pH meter must be used to update the initial pH value, serving as a new round of monitoring of the coolant status of the liquid cooling system.

[0096] In this embodiment, after the infusion pump 02 is turned off, it is necessary to simultaneously start recording the duration of the infusion pump 02 being turned off, so as to be used for the subsequent control of the cyclic operation of the cleaning process.

[0097] Specifically, if Figure 4 As shown, triggering the closing strategy based on the current duration of the infusion pump 02 being turned on and / or the current total opening time of the solenoid valve 07 may include the following steps:

[0098] S321, presetting a number of fluid infusion pump 02 opening time thresholds and a number of electromagnetic valve 07 opening time thresholds, and each of the cleaning times corresponds to one fluid infusion pump 02 opening time threshold and one electromagnetic valve 07 opening time threshold;

[0099] In this embodiment, several threshold values for the on-time of the refill pump 02 and several threshold values for the on-time of the solenoid valve 07 are preset to select different threshold values for the on-time of the refill pump 02 according to different cleaning states of the liquid cooling system. It is understandable that during the first cleaning of the coolant in the liquid cooling system, the cleaning time does not need to last very long to restore the coolant in the liquid cooling system to a normal pH value. In order to reduce the energy consumption of the liquid cooling system caused by frequent cleaning, the interval between the next cleaning will be set to be longer and longer. During the next cleaning, the real-time pH value may fluctuate more than the initial pH value, so a longer cleaning time is required to restore the coolant in the liquid cooling system to a normal pH value. Therefore, different threshold values for the on-time of the refill pump 02 are also used.

[0100] It is understandable that when both the infusion pump 02 and the solenoid valve 07 are opened for a long time, the opening time thresholds of several infusion pumps 02 and the opening time thresholds of several solenoid valves 07 can be set to the same; when the infusion pump 02 is opened for a long time and the solenoid valve 07 is opened intermittently, the opening time thresholds of several infusion pumps 02 and the opening time thresholds of several solenoid valves 07 are generally set to be different. The opening time thresholds of several infusion pumps 02 only need to be set according to the characteristics of the duration of the opening of the infusion pump 02, while the opening time thresholds of several solenoid valves 07 need to be set considering the total opening time of the solenoid valve 07 and the first preset time and second preset time of the open-close cycle switching.

[0101] S322, obtaining a corresponding opening time threshold of the infusion pump 02 and a corresponding opening time threshold of the solenoid valve 07 according to the cleaning times;

[0102] In this embodiment, it is necessary to select the corresponding opening time threshold of the liquid replenishing pump 02 and the corresponding opening time threshold of the solenoid valve 07 according to the number of cleaning times in order to fully adapt to the clean state of the coolant in the liquid cooling system.

[0103] S323. If the current duration of the fluid infusion pump 02 being turned on is greater than or equal to the corresponding fluid infusion pump 02 turning on time threshold, and / or the current total turning on time of the solenoid valve 07 is greater than or equal to the corresponding solenoid valve 07 turning on time threshold, the closing strategy is triggered.

[0104] In this embodiment, the shutdown strategy can be triggered based on either the rehydration pump 02 or the solenoid valve 07, or both the rehydration pump 02 and the solenoid valve 07. If the duration of the current on-time of the rehydration pump 02 is greater than or equal to the corresponding on-time threshold of the rehydration pump 02, and / or the total on-time of the current solenoid valve 07 is greater than or equal to the corresponding on-time threshold of the solenoid valve 07, it indicates that the coolant cleaning of the liquid cooling system has been completed, and thus the shutdown strategy is triggered to control the shutdown of the rehydration pump 02 and the solenoid valve 07.

[0105] Specifically, the greater the number of cleaning times, the greater the corresponding opening time thresholds of the infusion pump 02 and the electromagnetic valve 07 .

[0106] In this embodiment, the greater the number of cleaning times, the greater the abnormal deviation of the state of the coolant in the liquid cooling system may be. Therefore, as the number of system cleaning times increases, the duration and intensity of each self-cleaning must also be gradually increased, so as to effectively adapt to the cleaning needs of the liquid cooling system at different stages, extend the life of the liquid cooling system coolant and coolant-related equipment, and optimize the circulation cleaning effect of the liquid cooling system coolant.

[0107] Preferably, when the number of cleanings is 1, the on-time threshold of the infusion pump 02 can be set to a time value within the interval [2min, 5min]; when the number of cleanings is 2, the on-time threshold of the infusion pump 02 can be set to a time value within the interval [10min, 20min]; other on-time thresholds of the infusion pump 02 can be set and adjusted according to actual conditions. When the solenoid valve 07 is permanently open, the on-time threshold of the solenoid valve 07 can be set to the same value as the on-time threshold of the infusion pump 02; when the solenoid valve 07 is intermittently open, the on-time threshold of the solenoid valve 07 can be set and adjusted according to actual conditions.

[0108] Specifically, the controlling of the infusion pump 02 and the solenoid valve 07 to cyclically open or close operation according to the circulation strategy includes:

[0109] If the circulation strategy is triggered based on the duration of the current shutdown of the rehydration pump 02, the real-time pH value of the coolant in the liquid cooling system is obtained, and the rehydration pump 02 and the solenoid valve 07 are controlled to be turned on according to the opening strategy, the initial pH value and the real-time pH value, and the rehydration pump 02 and the solenoid valve 07 are controlled to be closed according to the closing strategy.

[0110] In this embodiment, if the circulation strategy is triggered based on the duration of the current liquid replenishment pump 02 being closed, it means that a period of time has passed since the last cleaning, and the real-time pH value of the coolant in the liquid cooling system needs to be obtained again. The opening strategy is used to determine whether the coolant in the liquid cooling system needs to be cleaned again. After the next cleaning, the closing strategy is used to end the cleaning, thereby completing a cleaning cycle and preparing for the next cleaning cycle, thereby completing the circulation self-cleaning of the coolant in the liquid cooling system.

[0111] Specifically, if Figure 5 As shown, triggering the circulation strategy based on the duration of the current shutdown of the infusion pump 02 may include the following steps:

[0112] S331, preset a number of closing time thresholds of the infusion pump 02, each cleaning number corresponding to one closing time threshold of the infusion pump 02;

[0113] In this embodiment, several off-time thresholds for the refill pump 02 are preset to correspond to different cleaning states of the liquid cooling system. It is understood that with repeated cleanings, accumulated sediment and impurities in the system are gradually discharged and reduced, and the chemical stability of the coolant tends to improve. In this case, longer off-time periods are required to avoid excessive cleaning and resource waste. Therefore, a corresponding off-time threshold for the refill pump 02 is required for each cleaning cycle to accommodate the different operating states of the liquid cooling system after cleaning.

[0114] S332, obtaining a corresponding closing time threshold of the infusion pump 02 according to the cleaning times;

[0115] S333: If the current duration of the infusion pump 02 being turned off is greater than or equal to the corresponding infusion pump 02 turning off time threshold, trigger the circulation strategy.

[0116] In this embodiment, if the duration of the current liquid replenishing pump 02 being shut down is greater than or equal to the corresponding liquid replenishing pump 02 shut-off time threshold, it means that the coolant in the liquid cooling system has exceeded the corresponding threshold time since the last cleaning, which means that the coolant in the liquid cooling system may need to monitor the status of the coolant in the liquid cooling system to determine whether the next cleaning is required, then the circulation strategy is triggered to start a cleaning cycle.

[0117] Specifically, the greater the number of cleaning times, the greater the corresponding closing time threshold of the infusion pump 02 .

[0118] In this embodiment, as the number of cleaning times increases, the shutdown time threshold of the rehydration pump 02 also increases, which can ensure that the liquid cooling system enters a longer dormant period after multiple cleanings, thereby gradually reducing the start and stop frequency of the rehydration pump 02 and the solenoid valve 07, reducing the wear and energy consumption of the rehydration pump 02 and the solenoid valve 07, and providing a longer stable operating environment for the liquid cooling system, thereby extending the life of the liquid cooling system and optimizing maintenance efficiency while ensuring the cleaning effect.

[0119] Preferably, when the number of cleaning times is 1, the closing time threshold of the infusion pump 02 can be set to a time value in the interval [11min, 15min]; when the number of cleaning times is 2, the closing time threshold of the infusion pump 02 can be set to a time value in the interval [10min, 20min]; when the number of cleaning times is 3, the closing time threshold of the infusion pump 02 can be set to a time value in the interval [15min, 20min]; other closing time thresholds of the infusion pump 02 can be set and adjusted according to actual conditions.

[0120] Preferably, the method provided in this application is used to perform online self-cleaning of the circulating coolant in the liquid cooling system, which is compatible with the different states of the coolant in the liquid cooling system and automatically cleans the coolant in the liquid cooling system to the greatest extent. However, if, during a certain cleaning, the liquid cooling effect of the liquid cooling system cannot be restored to normal after the refill pump 02 has been refilling and diluting the liquid for a predetermined period of time, this indicates that not only the state of the coolant in the liquid cooling system is abnormal, but there may also be failures in other equipment, such as the coolant filter not being able to work. In this case, the method of this application is no longer able to solve the problem, so it is necessary to shut down the liquid cooling system for maintenance, and use the drain valve 04 mentioned above to quickly drain the coolant in the liquid cooling system before troubleshooting other faults.

[0121] After the fault is repaired, the liquid cooling system is restarted, and the method provided in this application is used again to perform online self-cleaning of the coolant in the liquid cooling system, all parameters involved in the method are reset to zero so that the coolant in the liquid cooling system can be monitored again to avoid unnecessary confusion and corresponding errors.

[0122] like Figure 6 As shown, the embodiment of the present application also provides a device for online self-cleaning of a liquid cooling system. Optionally, the device includes:

[0123] PH value acquisition module 411, preset strategy module 412, control cleaning module 413, wherein:

[0124] A pH value acquisition module 411 is configured to acquire an initial pH value of the coolant in the liquid cooling system and acquire a real-time pH value of the coolant in the liquid cooling system;

[0125] In this embodiment, the pH value acquisition module 411 can be used to perform Figure 2 As shown in step S100 , for a detailed description of the pH value obtaining module 411 , reference may be made to the description of step S100 .

[0126] A preset strategy module 412 is used to preset an opening strategy, a closing strategy, and a loop strategy;

[0127] In this embodiment, the preset strategy module 412 can be used to execute Figure 2 As shown in step S200 , for a detailed description of the preset strategy module 412 , reference may be made to the description of step S200 .

[0128] The control cleaning module 413 is used to control the opening of the fluid replenishment pump and the solenoid valve according to the opening strategy, the initial pH value and the real-time pH value, and to control the closing of the fluid replenishment pump and the solenoid valve according to the closing strategy, and to control the fluid replenishment pump and the solenoid valve to cyclically open or close according to the circulation strategy to complete the online self-cleaning of the coolant of the liquid cooling system.

[0129] In this embodiment, the control cleaning module 413 can be used to perform Figure 2 As shown in step S300 , for a detailed description of the control cleaning module 413 , reference may be made to the description of step S300 .

[0130] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A method for online self-cleaning of coolant in a liquid cooling system, wherein the liquid cooling system is provided with a pH meter for measuring the pH value of the coolant in the liquid cooling system, a refilling pump for replenishing the coolant to the liquid cooling system, and a solenoid valve for controlling the discharge of the coolant in the liquid cooling system; characterized in that: The method comprises: Obtaining an initial pH value of the coolant in the liquid cooling system, and obtaining a real-time pH value of the coolant in the liquid cooling system; Preset opening strategy, closing strategy and loop strategy; The rehydration pump and the solenoid valve are controlled to be opened according to the opening strategy, the initial pH value and the real-time pH value, and are controlled to be closed according to the closing strategy. The rehydration pump and the solenoid valve are controlled to be cyclically opened or closed according to the circulation strategy to complete the online self-cleaning of the coolant of the liquid cooling system.

2. The method according to claim 1, characterized in that The controlling the opening of the infusion pump and the solenoid valve according to the opening strategy, the initial pH value and the real-time pH value includes: If the opening strategy is triggered based on the initial pH value and the real-time pH value, the fluid infusion pump is controlled to be continuously turned on, and the solenoid valve is controlled to be continuously turned on or intermittently turned on, and at the same time, the duration of the fluid infusion pump being turned on and the total opening time of the solenoid valve are recorded; at the same time, the number of times the fluid infusion pump is turned on is recorded as the number of cleaning times.

3. The method according to claim 2, characterized in that The triggering of the activation strategy based on the initial pH value and the real-time pH value includes: Preset pH threshold; Obtaining a pH difference between the initial pH value and the real-time pH value; If the pH difference is greater than or equal to the pH threshold, the activation strategy is triggered.

4. The method according to claim 2, characterized in that The controlling the closing of the fluid infusion pump and the solenoid valve according to the closing strategy includes: If the closing strategy is triggered based on the current duration of the infusion pump being on and / or the current total opening time of the solenoid valve, the infusion pump and the solenoid valve are closed; at the same time, the duration of the infusion pump being off is recorded; and at the same time, the initial pH value is updated with the pH value currently detected by the pH meter.

5. The method according to claim 4, characterized in that The triggering of the closing strategy based on the current duration of the fluid infusion pump being turned on and / or the current total opening time of the solenoid valve includes: A plurality of fluid infusion pump opening time thresholds and a plurality of solenoid valve opening time thresholds are preset, and each of the cleaning times corresponds to one fluid infusion pump opening time threshold and one solenoid valve opening time threshold; Obtaining a corresponding fluid infusion pump opening time threshold and a corresponding solenoid valve opening time threshold according to the cleaning times; If the current duration of the fluid infusion pump being turned on is greater than or equal to the corresponding fluid infusion pump turning on time threshold, and / or the current total turning on time of the solenoid valve is greater than or equal to the corresponding solenoid valve turning on time threshold, the closing strategy is triggered.

6. The method according to claim 5, characterized in that The greater the number of cleaning times, the greater the corresponding fluid infusion pump opening time threshold and the solenoid valve opening time threshold.

7. The method according to claim 4, characterized in that The step of controlling the fluid infusion pump and the solenoid valve to open or close cyclically according to the circulation strategy includes: If the circulation strategy is triggered based on the current duration of the fluid replenishment pump being closed, the real-time pH value of the coolant in the liquid cooling system is obtained, and the fluid replenishment pump and the solenoid valve are controlled to be opened according to the opening strategy, the initial pH value and the real-time pH value, and the fluid replenishment pump and the solenoid valve are controlled to be closed according to the closing strategy.

8. The method according to claim 7, characterized in that The triggering of the circulation strategy based on the duration of the current shutdown of the infusion pump includes: Preset a number of fluid infusion pump off time thresholds, each cleaning number corresponds to one of the fluid infusion pump off time thresholds; Obtaining a corresponding fluid infusion pump shut-off time threshold according to the cleaning times; If the current duration of the infusion pump being turned off is greater than or equal to the corresponding infusion pump turning off time threshold, the cycle strategy is triggered.

9. The method according to claim 8, characterized in that The greater the number of cleaning times, the greater the corresponding fluid infusion pump shutdown time threshold.

10. A device for online self-cleaning of a liquid cooling system, characterized in that: The device comprises: A pH value acquisition module is used to acquire an initial pH value of the coolant in the liquid cooling system and to acquire a real-time pH value of the coolant in the liquid cooling system; Preset strategy module, used to preset opening strategy, closing strategy and loop strategy; The control cleaning module is used to control the opening of the fluid replenishment pump and the solenoid valve according to the opening strategy, the initial pH value and the real-time pH value, and to control the closing of the fluid replenishment pump and the solenoid valve according to the closing strategy, and to control the fluid replenishment pump and the solenoid valve to cyclically open or close according to the circulation strategy to complete the online self-cleaning of the coolant of the liquid cooling system.

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