Method for replacing water dividing and collecting device on line and storage medium

Abstract

The invention relates to a method for on-line replacement of a water distribution and collection device and a storage medium, and the method for on-line replacement of the water distribution and collection device comprises the steps that a standby cold liquid distribution unit quits a group control mode and is changed into a single-machine mode; closing the unit and first and second maintenance valves of a liquid supply main pipe network and a liquid return main pipe network; a first hose is connected with a first drain valve on the liquid supply side of the standby cold liquid distribution unit, a second hose is connected with a second drain valve on the liquid return side, the other ends of the two are connected with a temporary sub-catchment device, and the two drain valves are opened; starting the standby cold liquid distribution unit, and replacing the fault sub-catchment device with a temporary sub-catchment device to form a temporary passage; when the temporary passage runs, the fault water distributing and collecting device is disassembled and replaced with a new water distributing and collecting device; and opening a valve of the new sub-catchment device, and replacing the temporary sub-catchment device with the new sub-catchment device. According to the invention, the problem that the operation of the intelligent calculation service is influenced by the need of shutting down to replace the faulty sub-catchment in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of liquid cooling control technology, and in particular to a method and storage medium for online replacement of manifolds. Background Technology

[0002] As the infrastructure for artificial intelligence technology, intelligent computing centers have experienced rapid development in recent years. Compared to traditional data centers, intelligent computing centers have higher power densities, with single-rack power reaching over 40kW, thus commonly employing cold plate liquid cooling systems. Manifolds are indispensable key components in liquid cooling systems, their performance directly affecting the overall system's heat dissipation efficiency and reliability, and are crucial for building efficient and stable data centers. With the continuous increase in computing center power density, liquid cooling systems place higher demands on the flow distribution accuracy, pressure resistance, corrosion resistance, and ultra-high precision manufacturing processes of manifolds. In practical applications, due to pressure, corrosion, and manufacturing processes, manifolds frequently experience leaks and other insufficient sealing problems, severely affecting flow distribution accuracy and the safe and stable operation of the liquid cooling system, consequently impacting the operation of intelligent computing center servers, necessitating timely replacement. In related technologies, replacing manifolds requires server shutdown and must be done offline. Intelligent computing services (such as AI training and real-time data processing) have extremely high requirements for continuity, and shutdown will lead to service interruption and task failure, which will seriously affect the operation of intelligent computing services.

[0003] Currently, no effective solution has been proposed to address the issue of needing to shut down the system to replace faulty manifolds, which in turn affects the operation of intelligent computing services. Summary of the Invention

[0004] This application provides a method and storage medium for online replacement of a manifold, to at least solve the problem in related technologies that requires downtime to replace a faulty manifold, thus affecting the operation of intelligent computing services.

[0005] In a first aspect, embodiments of this application provide a method for online replacement of manifolds, applied to a liquid cooling system including a primary coolant distribution unit, a backup coolant distribution unit, multiple manifolds, multiple server cold plates, a return main network, and a supply main network; the primary coolant distribution unit and the backup coolant distribution unit operate in a group control mode, and the method includes:

[0006] The backup coolant distribution unit is removed from the group control mode and switched to stand-alone mode.

[0007] The backup coolant distribution unit is shut down, and the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network are also shut down.

[0008] Connect one end of the first hose to the first drain valve of the backup coolant distribution unit in the main supply network, and connect one end of the second hose to the second drain valve of the backup coolant distribution unit in the main return network; connect a pre-deployed temporary manifold between the other ends of the first hose and the second hose; open the first drain valve and the second drain valve;

[0009] The backup coolant distribution unit is activated, and the faulty manifold connected to the server cold plate is replaced with the temporary manifold, so that the backup coolant distribution unit, the first hose, the temporary manifold, the server cold plate, and the second hose form a temporary passage.

[0010] If the temporary access is operational, remove the faulty manifold and replace it with a pre-prepared new manifold; open the valve of the new manifold and replace the temporary manifold connected to the server cold plate with the new manifold.

[0011] In some embodiments, shutting down the backup coolant distribution unit and closing the first maintenance valve of the backup coolant distribution unit in the supply main network and the second maintenance valve in the return main network includes:

[0012] The main coolant distribution unit reduces the supply temperature of the coolant to a preset temperature in the group control mode;

[0013] Shut down the backup coolant distribution unit and observe the first operating status of the main coolant distribution unit;

[0014] When the first operating state is normal, close the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network to isolate the backup coolant distribution unit.

[0015] In some embodiments, connecting a pre-deployed temporary manifold between the other end of the first hose and the other end of the second hose includes:

[0016] Connect the other end of the first hose and the other end of the second hose to the supply port and return port of the temporary manifold, respectively, and connect the distribution interface of the corresponding supply port and the collection interface of the corresponding return port of the temporary manifold through a short-connecting hose to form a temporary internal passage.

[0017] In some embodiments, activating the backup coolant distribution unit and replacing the faulty manifold connected to the server cold plate with the temporary manifold includes:

[0018] Using the backup coolant distribution unit, coolant is injected into the temporary manifold through the first hose;

[0019] Start the backup coolant distribution unit and adjust the flow parameters to a preset range, then observe the second operating state of the backup coolant distribution unit;

[0020] When the second operating state is normal, close the valve of the faulty manifold, and unplug the quick connector on the faulty manifold and connect it to the temporary manifold; the quick connector is the connector that connects the server cold plate to the manifold.

[0021] In some embodiments, injecting coolant into the temporary manifold via the first hose using the backup coolant distribution unit includes:

[0022] Open the vent valve on top of the temporary manifold and control the backup coolant distribution unit to output coolant through the first hose at a preset flow rate until no more air bubbles are discharged from the vent valve.

[0023] In some embodiments, opening the valve of the new manifold and replacing the temporary manifold connected to the server cold plate with the new manifold includes:

[0024] Open the valve of the new manifold and disconnect the quick connector from the quick connector on the temporary manifold and connect it to the new manifold.

[0025] In some embodiments, opening the valve of the new manifold and disconnecting the quick-connect from the quick-connect on the temporary manifold and connecting it to the new manifold includes:

[0026] Open the valve of the new manifold and use the main coolant distribution unit to replenish the new manifold until the system pressure reaches the preset pressure range;

[0027] Remove the quick connector from the temporary manifold and connect it to the new manifold one by one.

[0028] In some embodiments, after replacing the temporary manifold connected to the server cold plate with the new manifold, the method further includes:

[0029] Close the first drain valve and the second drain valve, and disconnect the first hose and the second hose to seal the interfaces of the first drain valve and the second drain valve;

[0030] Gradually open the first maintenance valve and the second maintenance valve, and add the backup coolant distribution unit to the group control mode.

[0031] In some embodiments, the maintenance valve includes a loop valve and an isolation valve; and / or, the first hose and the second hose are flexible delivery pipes.

[0032] Secondly, embodiments of this application provide a storage medium storing a computer program that, when executed by a processor, implements the method for online replacement of the manifold as described in the first aspect above.

[0033] Compared to related technologies, the online replacement method and storage medium provided in this application embodiment modify the standby coolant distribution unit from the group control mode to a standby mode; shut down the standby coolant distribution unit and close the first maintenance valve of the standby coolant distribution unit in the supply main network and the second maintenance valve of the standby coolant distribution unit in the return main network; connect one end of the first hose to the first drain valve of the standby coolant distribution unit in the supply main network, and connect one end of the second hose to the second drain valve of the standby coolant distribution unit in the return main network; connect a pre-deployed [device / system] between the other ends of the first hose and the other ends of the second hose. A temporary manifold is installed; the first and second drain valves are opened; the backup coolant distribution unit is activated, and the faulty manifold connected to the server cold plate is replaced with the temporary manifold, forming a temporary passage between the backup coolant distribution unit, the first hose, the temporary manifold, the server cold plate, and the second hose; with the temporary passage in operation, the faulty manifold is removed and replaced with a pre-prepared new manifold; the valve of the new manifold is opened, and the temporary manifold connected to the server cold plate is replaced with the new manifold, thus solving the problem in related technologies that requires downtime to replace the faulty manifold, thereby affecting the operation of intelligent computing services.

[0034] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0036] Figure 1 This is a hardware structure block diagram of a terminal for a method of online replacement of a manifold according to an embodiment of this application;

[0037] Figure 2 This is a flowchart of a method for online replacement of a manifold according to an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of a liquid cooling system according to an embodiment of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0040] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application means two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The terms “first,” “second,” “third,” etc., used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0042] The method embodiments provided in this example can be executed on a terminal, computer, or similar computing device. Taking running on a terminal as an example, Figure 1 This is a hardware structure block diagram of a terminal for a method of online replacement of a manifold according to an embodiment of this application. Figure 1 As shown, a terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. Optionally, the terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the terminal described above. For example, the terminal may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0043] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the online replacement of the manifold in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thus implementing the aforementioned method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0044] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0045] This embodiment provides a method for replacing the manifold online. Figure 2 This is a flowchart of a method for online replacement of a manifold according to an embodiment of this application, such as... Figure 2 As shown, the process includes the following steps:

[0046] Step S201: Exit the standby coolant distribution unit from group control mode and switch it to standby mode;

[0047] Specifically, by operating the group control management interface of the liquid cooling system, the standby coolant distribution unit is decoupled from the group control mode that works in collaboration with the main coolant distribution unit, and switched to a standby mode that independently controls its own liquid supply, return and flow parameters. This completely decouples the operating status and parameter adjustment of the standby coolant distribution unit from the group control logic of the main coolant distribution unit, providing operating mode support for subsequent independent pipeline operation and temporary access construction for the standby coolant distribution unit.

[0048] Among them, the group control mode refers to the normal operating mode of the coolant distribution unit. Generally, there are multiple primary devices and one backup device. In the group control mode, if the primary device malfunctions, the backup coolant distribution unit automatically switches from backup to primary mode.

[0049] Step S202: Close the standby coolant distribution unit, and close the first maintenance valve of the standby coolant distribution unit in the main supply network and the second maintenance valve in the main return network.

[0050] Specifically, first, turn off the main power supply and operation switch of the standby coolant distribution unit to cut off the power source of its internal water pump and stop the coolant delivery. After the standby coolant distribution unit has completely stopped, operate the first maintenance valve connected to the standby coolant distribution unit on the main supply line and the second maintenance valve connected to the standby coolant distribution unit on the return line respectively. Rotate both maintenance valves to the fully closed position to prevent the coolant from flowing back from the main supply line to the standby coolant distribution unit and to prevent the coolant from flowing between the return line and the standby coolant distribution unit. This achieves complete physical isolation between the standby coolant distribution unit and the main circulation path of the liquid cooling system, providing a safe operating environment for subsequent connection of hoses and construction of temporary passages, and avoiding leakage of the main circulation coolant or interference with the operation of the standby side pipeline.

[0051] Step S203: Connect one end of the first hose to the first drain valve of the backup cold liquid distribution unit in the main supply network, and connect one end of the second hose to the second drain valve of the backup cold liquid distribution unit in the main return network; connect a pre-deployed temporary manifold between the other ends of the first hose and the other ends of the second hose; open the first drain valve and the second drain valve.

[0052] Specifically, first confirm that both the first drain valve (supply main network side) and the second drain valve (return main network side) of the standby coolant distribution unit are fully closed. Then, align one end of the first hose (which must be compatible with the drain valve interface specification) with the first drain valve interface, and secure the hose connector to the first drain valve interface with a clamp after wrapping with sealing tape. Using the same sealing and tightening method, connect one end of the second hose to the second drain valve of the standby coolant distribution unit on the return main network. After both hoses are connected to the drain valves and it is confirmed that there is no looseness or leakage at the interface, connect the other end of the first hose to the temporary drain valve pre-deployed next to the manifold to be replaced. Connect the supply port of the temporary manifold to the return port of the temporary manifold, and tighten it with clamps and check the interface seal. After installation, check the hose routing: avoid bending (bending radius ≥ 30cm), keep away from heat sources, and fix it to the side of the cabinet with cable ties. Finally, slowly open the first drain valve (gradually increase the opening from 1 / 4 turn to full open to avoid coolant impact on the pipes), and then open the second drain valve in the same way. This allows the subsequently injected coolant to form a controllable flow path through "first drain valve - first hose - temporary manifold - second hose - second drain valve", laying the foundation for coolant circulation in the temporary passage.

[0053] Step S204: Start the backup coolant distribution unit and replace the faulty manifold connected to the server cold plate with a temporary manifold, so that the backup coolant distribution unit, the first hose, the temporary manifold, the server cold plate and the second hose form a temporary passage.

[0054] Specifically, the backup coolant distribution unit is activated via the local control panel or remote control interface of the liquid cooling system. The flow rate parameters of the backup coolant distribution unit are adjusted to a preset value (e.g., 3 m³ / h) that matches the rated flow rate of the faulty manifold, and monitored continuously for 5 minutes to confirm that there are no abnormal fluctuations in the operating parameters such as the supply pressure and supply / return temperature of the backup coolant distribution unit. Subsequently, the faulty manifold connected to the server cold plate is replaced with a temporary manifold. After the replacement, the operating status of the backup coolant distribution unit and the real-time heat dissipation temperature of the server cold plate are checked again to confirm that the coolant can form a closed loop according to the path of "backup coolant distribution unit → first hose → temporary manifold → server cold plate → second hose → backup coolant distribution unit". Finally, a stable temporary path is constructed to ensure that the server cold plate continues to receive cooling during the removal and replacement of the faulty manifold, and to prevent the server from shutting down or experiencing performance degradation due to heat dissipation interruption.

[0055] Step S205: If the temporary access is working, remove the faulty manifold and replace it with a new manifold that has been prepared in advance; open the valve of the new manifold and replace the temporary manifold connected to the server cold plate with the new manifold.

[0056] Specifically, after confirming that the temporary access path is operating stably (i.e., the supply pressure and flow rate of the backup coolant distribution unit do not fluctuate abnormally, the surface temperature of the server cold plate remains within the normal heat dissipation range, and there are no high-temperature alarms), disconnect the connecting pipe between the faulty manifold and the main pipeline, and clean the sealant residue and impurities at the main pipeline interface; then align the pre-prepared new manifold with the main pipeline interface, complete the installation of the new manifold, replace the sealant, and tighten it to the specified torque; then slowly open the valve of the new manifold (gradually increasing the opening from 1 / 4 turn). (Open to full capacity to avoid coolant impact causing air lock in the pipes), and replace the temporary manifold connected to the server cold plate with the new manifold. After the replacement is completed, check the operating status of the new manifold and the heat dissipation effect of the server cold plate again to ensure that the coolant can be stably delivered to the server cold plate through the new manifold. This completes the switch from the temporary manifold to the new manifold. The coolant forms a closed loop according to the path of "main coolant distribution unit → main supply network → new manifold → server cold plate → return network → main coolant distribution unit".

[0057] Through the above steps, while the main coolant distribution unit of the liquid cooling system continuously maintains normal heat dissipation for other server cold plates, an independent temporary path is established with the help of the backup coolant distribution unit and the temporary manifold. This achieves "uninterrupted cooling supply to server cold plates" during the replacement of a faulty manifold, avoiding server service interruptions caused by traditional shutdown replacements (such as computing power interruption and data processing stagnation in intelligent computing centers). Furthermore, through the operational design of "group control to single machine → dual maintenance valve isolation," the backup coolant distribution unit is completely decoupled from the main circulation pipeline, ensuring no interference with the supply pressure and temperature balance of the main coolant distribution unit and guaranteeing the stable operation of servers corresponding to other unreplaced manifolds. At the same time, the entire process is leak-free, avoiding the risks of electrical short circuits and equipment corrosion caused by coolant leaks. Moreover, it eliminates the need to disassemble the main circulation pipeline, significantly shortening the fault handling time. Ultimately, it achieves online replacement of faulty manifolds in the liquid cooling system, continuous server service operation, and stable and uninterrupted main circulation system, meeting the core requirements of intelligent computing centers and data centers for high availability and high reliability of liquid cooling systems.

[0058] Figure 3 This is a schematic diagram of a liquid cooling system according to an embodiment of this application. The core includes two main loops: a main supply network and a main return network (red portion). First and second primary coolant distribution units are connected to the main network to provide cooling capacity. Multiple manifolds are connected to the main supply network and connected downwards to the server cold plates, with their return ends connected to the main return network. A standby coolant distribution unit is connected to the main supply network via a first maintenance valve (which includes a first loop valve 31 and a first isolation valve 32) and a first drain valve 33. It is also connected to the main return network via a second maintenance valve (which includes a second loop valve 34 and a second isolation valve 35) and a second drain valve 36. Simultaneously, a first hose 37 and a second hose 38, indicated by dashed lines, connect the first drain valve 33 (supply side) and the second drain valve 36 (return side) to a temporary manifold, forming a temporary loop from the standby coolant distribution unit to the temporary manifold. This retains the conventional cooling supply link of the primary units while also providing temporary cooling capacity to the standby units through temporary piping.

[0059] One server rack corresponds to one manifold, and multiple manifolds include the faulty manifold to be replaced. During the replacement process, a backup coolant distribution unit is used to temporarily cool the server cold plate corresponding to the faulty manifold, while the other manifolds are continuously cooled by the primary coolant distribution unit. The entire faulty manifold replacement process does not require powering down any server rack, ensuring the continuity of intelligent computing services.

[0060] In some embodiments, shutting down the backup coolant distribution unit and closing the first maintenance valve of the backup coolant distribution unit in the supply main network and the second maintenance valve in the return main network includes:

[0061] The main coolant distribution unit reduces the supply temperature of the coolant to a preset temperature in the group control mode;

[0062] Shut down the backup coolant distribution unit and observe the first operating status of the main coolant distribution unit;

[0063] When the first operating state is normal, close the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network to isolate the backup coolant distribution unit.

[0064] Specifically, first, through the group control management platform or local operation interface of the liquid cooling system, gradually reduce the supply temperature of the main coolant distribution unit in group control mode from the current operating temperature to the preset temperature (this preset temperature needs to be determined based on the heat dissipation requirements of the liquid cooling system and the compatibility range of the server cold plate; it is usually 5℃-8℃ lower than the original supply temperature to avoid the server cold plate's heat dissipation efficiency decreasing due to excessively high supply temperature when the main coolant distribution unit is solely bearing the heat dissipation load, while ensuring that the supply water temperature is higher than the leak point temperature); after the supply temperature of the main coolant distribution unit stabilizes at the preset temperature, shut down the operating power and internal water pump of the backup coolant distribution unit through the equipment control switch or remote command to stop its coolant delivery function, and continuously observe for 10 minutes, focusing on monitoring the first operating status of the main coolant distribution unit (including whether the supply pressure is maintained within the normal range, the return temperature and...). (Observe whether the temperature difference of the supply liquid is stable, and whether the system triggers alarm signals such as abnormal pressure or insufficient flow). If the parameters such as supply liquid pressure, flow rate, and temperature of the main coolant distribution unit do not fluctuate abnormally during the observation period, and there are no fault alarms, it indicates that the main coolant distribution unit has the ability to independently bear the heat dissipation load of the system. At this time, operate the first maintenance valve at the connection node between the standby coolant distribution unit and the main supply liquid network, and the second maintenance valve at the connection node between the standby coolant distribution unit and the main return liquid network, respectively. Rotate both maintenance valves to the limit stop in the closing direction. By closing the double valves, the standby coolant distribution unit is completely physically isolated from the main supply liquid network and the main return liquid network. This ensures that when the pipeline on the standby coolant distribution unit side is operated in the future, the coolant in the main circulation will not flow back into the standby side pipeline, providing a safe and undisturbed operating environment for subsequent connection of hoses and establishment of temporary passages.

[0065] Through the above steps, firstly, by lowering the supply temperature of the primary coolant distribution unit, a heat dissipation margin is reserved in advance to support the entire heat dissipation load of the subsequent independent liquid cooling system. This avoids the problem of the primary unit's supply temperature soaring and server cold plate heat dissipation failing due to concentrated heat dissipation pressure after the backup coolant distribution unit shuts down. Secondly, observing the primary unit's initial operating status after shutting down the backup coolant distribution unit allows for real-time verification of the primary unit's ability to operate stably and independently (e.g., whether the supply pressure, flow rate, and temperature remain within normal ranges, and whether there are any fault alarms). This effectively avoids system-wide heat dissipation interruption caused by directly isolating the backup unit due to an abnormal primary unit status. Risk; Finally, after confirming that the main unit is in normal condition, the first and second maintenance valves are closed to isolate the standby unit. This achieves a complete physical disconnection between the standby coolant distribution unit and the main supply and return coolant pipelines, preventing backflow or leakage of the main circulating coolant into the standby pipeline. It provides a pressure-free and liquid-free safe operating environment for subsequent hose connections and temporary access construction of the standby pipeline. Furthermore, through the progressive operation of "pre-cooling-status verification-safe isolation", it ensures that the cooling supply of the liquid cooling system to the server remains stable throughout the entire process. The server's business operation is not affected by the shutdown and isolation operation of the standby unit, thus balancing operational safety and system continuity.

[0066] In some embodiments, connecting a pre-deployed temporary manifold between the other end of the first hose and the other end of the second hose includes:

[0067] Connect the other end of the first hose and the other end of the second hose to the supply port and return port of the temporary manifold, respectively, and connect the distribution interface of the corresponding supply port and the collection interface of the corresponding return port of the temporary manifold through a short-connecting hose to form a temporary internal passage.

[0068] Specifically, first confirm that the pre-deployed temporary manifold is clean and free of impurities (no residual coolant or foreign matter inside), and that the specifications of its supply port, return port, distribution interface, and collection interface are fully compatible with the connector specifications of the first hose, second hose, and short-connecting hose. Then, align the end of the first hose furthest from the first drain valve of the standby coolant distribution unit with the supply port of the temporary manifold, wrap sealing tape around the interface, and then use clamps to lock the hose connector to the supply port interface, ensuring no gaps at the interface. Using the same sealing and tightening method, connect the end of the second hose furthest from the second drain valve of the standby coolant distribution unit to the return port interface of the temporary manifold. Once both hoses are connected to the supply port of the temporary manifold... After connecting the liquid inlet and return outlet and confirming their sealing, take a short connecting hose that matches the specifications of the distribution interface and collection interface of the temporary manifold. Connect one end of the hose to the distribution interface of the corresponding liquid supply port of the temporary manifold (i.e., the interface downstream of the liquid supply port used to divert the liquid to the server cold plate), and connect the other end to the collection interface of the corresponding liquid return port of the temporary manifold (i.e., the interface upstream of the liquid return port used to collect the coolant returning from the server cold plate). Tighten the hose with clamps and check the sealing of the interfaces. Finally, a temporary internal passage of "liquid supply port → distribution interface → short connecting hose → collection interface → return outlet" is formed inside the temporary manifold, laying the foundation for the initial circulation and venting of coolant after the backup coolant distribution unit is started.

[0069] Through the above connection and short-circuiting operations, on the one hand, the precise connection and sealing of the first hose, the second hose, and the supply and return ports of the temporary manifold effectively prevents leakage or seepage at the interface during subsequent coolant circulation, ensuring the sealing and safety of the temporary passage. On the other hand, by connecting the distribution and collection ports of the temporary manifold through the short-circuiting hoses to form an internal passage, the coolant can first complete a small circulation within the temporary manifold during the initial startup of the backup coolant distribution unit, instead of flowing directly to the unconnected server cold plate interface. This circulation path can both expel residual air in the temporary passage (including hoses and temporary manifold) and prevent coolant delivery interruption or reduced heat dissipation efficiency due to air resistance after connecting the server cold plate, and verify in advance whether the passage composed of the backup coolant distribution unit, hoses, and temporary manifold is unobstructed, avoiding the impact of passage blockage on the subsequent cooling supply to the server cold plate. This prepares for the subsequent switching of the faulty manifold and the establishment of a complete temporary heat dissipation passage, further improving the stability and reliability of the entire online replacement process.

[0070] In some embodiments, activating the backup coolant distribution unit and replacing the faulty manifold connected to the server cold plate with the temporary manifold includes:

[0071] Using the backup coolant distribution unit, coolant is injected into the temporary manifold through the first hose;

[0072] Start the backup coolant distribution unit and adjust the flow parameters to a preset range, then observe the second operating state of the backup coolant distribution unit;

[0073] When the second operating state is normal, close the valve of the faulty manifold, and unplug the quick connector on the faulty manifold and connect it to the temporary manifold; the quick connector is the connector that connects the server cold plate to the manifold.

[0074] Specifically, the reserve coolant in the backup coolant distribution unit is slowly injected into the temporary manifold through the first hose to replenish it. Then, the flow parameters of the backup coolant distribution unit are gradually adjusted to a preset range (this preset range must ensure that the cooling capacity received by the subsequent server cold plates is consistent with the original state). Subsequently, continuous monitoring is conducted for 5 minutes, focusing on observing the second operating status of the backup coolant distribution unit, including whether the supply pressure is stable within the normal range, whether the temperature difference between the return and supply temperatures is stable within the preset range, and whether the equipment triggers fault alarms such as abnormal flow or excessive / low pressure. If all parameters of the backup coolant distribution unit remain stable and there are no alarms during the monitoring period, it indicates that its operating status is normal. At this point, [the process is]... Close the valve of the faulty manifold to cut off the coolant flow between the faulty manifold and the server cold plates and main circulation. Depressurize the faulty manifold and drain the coolant into an empty tank. Then, using a "single-connector switching" method, unplug the hot-swappable quick connectors on the faulty manifold that connect to the server cold plates. After unplugging each quick connector, immediately align it with the corresponding distribution port on the temporary manifold and insert it, securing it firmly. After insertion, gently pull the quick connector to confirm a secure connection, and observe that there is no leakage at the interface. Continue until all server cold plate quick connectors have been switched from the faulty manifold to the temporary manifold. The quick connector is the joint between the server cold plate and the manifold, an aviation plug connection, hot-swappable, and leak-proof.

[0075] Through the above steps, firstly, by adjusting the flow rate to a preset range that matches the faulty manifold and monitoring the second operating state, the reliability of the standby coolant distribution unit's independent operation can be verified, and the cooling supply intensity of the server cold plate after the switchover can be ensured to be consistent with the original state, avoiding server temperature spikes or performance degradation due to insufficient cooling. Secondly, the operation of "closing the valve of the faulty manifold first and then switching the quick connectors one by one" cuts off the coolant flow of the faulty manifold, preventing leakage of the main circulation coolant during the switchover process. On the other hand, the method of switching one by one can avoid multiple quick connectors being disconnected at the same time, which would cause the server cold plate to lose cooling temporarily, ensuring the continuous and stable operation of server services during the switchover. Ultimately, a seamless transition from the faulty manifold to the temporary manifold is achieved, creating a safe condition of "no server cooling interruption and no system risk" for the subsequent removal and replacement of the faulty manifold.

[0076] In some embodiments, injecting coolant into the temporary manifold via the first hose using the backup coolant distribution unit includes:

[0077] Open the vent valve on top of the temporary manifold and control the backup coolant distribution unit to output coolant through the first hose at a preset flow rate until no more air bubbles are discharged from the vent valve.

[0078] Specifically, rotate the vent valve handle to the fully open position to ensure that the interior of the temporary manifold is connected to the atmosphere and that air can be discharged smoothly. Then, slowly deliver the reserve coolant in the standby coolant distribution unit to the interior of the temporary manifold at a preset flow rate along the first hose. As the coolant gradually fills the cavity of the temporary manifold, the residual air inside is squeezed to the top and discharged through the vent valve (bubbles can be observed continuously overflowing from the vent valve outlet). Continue to operate the standby coolant distribution unit at the preset flow rate until no bubbles are discharged from the vent valve outlet and only coolant flows out steadily. At this point, close the vent valve to complete the coolant injection and venting operation of the temporary manifold.

[0079] Through the above operations, on the one hand, controlling the output flow of the backup coolant distribution unit within a lower preset range can prevent high-flow coolant from rapidly impacting the temporary passage, preventing air in the pipes from being compressed into air masses that are difficult to expel, while reducing coolant flow noise and pipe vibration, and protecting the temporary connection hose interface from impact damage; on the other hand, by opening the vent valve on the top of the temporary manifold and continuously venting until no more air bubbles are discharged, residual air in the temporary passage can be completely removed. If there is air in the passage, it will form air resistance during subsequent coolant circulation, leading to insufficient coolant supply to the server cold plate, a sharp drop in heat dissipation efficiency, and even causing pressure fluctuations in the backup coolant distribution unit and triggering a fault alarm. Thorough venting ensures that the coolant flows smoothly in the temporary passage, laying the foundation for a stable cooling supply to the server cold plate.

[0080] In some embodiments, opening the valve of the new manifold and replacing the temporary manifold connected to the server cold plate with the new manifold includes:

[0081] Open the valve of the new manifold and disconnect the quick connector from the quick connector on the temporary manifold and connect it to the new manifold.

[0082] Specifically, slowly rotate the valve of the new manifold to gradually fill the internal cavity of the new manifold with coolant supplied by the main coolant distribution unit. Simultaneously, switch the quick-connect fittings on the supply side and return side of the temporary manifold connecting the server cold plates using a "pull-out and plug-in, switch one by one" method. First, hold the single hot-swappable quick-connect fitting on the temporary manifold that connects to the server cold plates (the quick-connect fitting is the core connection component between the server cold plates and the manifold, and has a leak-proof design), press the fitting latch and pull it out smoothly. Then, quickly align the quick-connect fitting with the interface of the new manifold (supply distribution interface and return collection interface) and push the fitting until it is securely connected. Repeat the above operation until all the quick-connect fittings of the server cold plates have been switched from the temporary manifold to the new manifold. During this process, after each fitting switch is completed, visually inspect the interface of the new manifold for any leakage to ensure a reliable seal.

[0083] The above steps, using a "plug-and-plug" quick-connect switching method, can avoid the simultaneous disconnection of multiple quick-connects, which could lead to a large leakage of coolant in the temporary path (reducing coolant loss and the risk of contamination of server room equipment). They also prevent external air from entering the temporary path, avoiding increased air resistance during the switching process that could affect the cooling supply to other un-switched server cold plates. This achieves a seamless switch from the temporary manifold to the new manifold, ensuring the server cold plates are always under cooling supply throughout the process, eliminating the risk of cooling interruption and guaranteeing the continuous and stable operation of server services. This lays a crucial foundation for system recovery after the replacement of the faulty manifold.

[0084] In some embodiments, opening the valve of the new manifold and disconnecting the quick-connect from the quick-connect on the temporary manifold and connecting it to the new manifold includes:

[0085] Open the valve of the new manifold and use the main coolant distribution unit to replenish the new manifold until the system pressure reaches the preset pressure range;

[0086] Remove the quick connector from the temporary manifold and connect it to the new manifold one by one.

[0087] Specifically, open the valve of the new manifold and activate the replenishment function of the main coolant distribution unit to continuously replenish coolant to the new manifold. During this period, monitor the pressure value of the branch where the new manifold is located in real time through the system pressure monitoring module until the pressure stabilizes within the preset pressure range. After replenishment, switch the quick-connect fittings on the supply side and return side of the temporary manifold for the server cold plates in a "pull-out and plug-in, switch one by one" manner until all quick-connect fittings of the server cold plates have been moved from the temporary manifold to the new manifold. After each quick-connect fitting is switched, visually inspect the interface of the new manifold for any leakage to ensure a reliable seal.

[0088] Through the above steps, the main coolant distribution unit is first replenished to the preset pressure to expel residual air from the new manifold piping, preventing air resistance from affecting coolant delivery. Simultaneously, the pressure between the new manifold and the main circulation system is balanced to prevent leakage or splashing during quick-connect switching. Then, by using a "pull-out-plug-in" quick-connector, the supply and return coolant pathways for each server cold plate are ensured to be synchronously connected, eliminating the risk of cooling interruption and preventing server overheating or derating. After switching, visual inspection for leaks allows for timely detection of sealing issues. Ultimately, a seamless transition from the temporary manifold to the new manifold is achieved, ensuring a stable supply of cooling capacity to the server and continuous business operation throughout the process, restoring a reliable foundation for the liquid cooling system.

[0089] In some embodiments, after replacing the temporary manifold connected to the server cold plate with the new manifold, the method further includes:

[0090] Close the first drain valve and the second drain valve, and disconnect the first hose and the second hose to seal the interfaces of the first drain valve and the second drain valve;

[0091] Gradually open the first maintenance valve and the second maintenance valve, and add the backup coolant distribution unit to the group control mode.

[0092] Specifically, after replacing the temporary manifold connected to the server cold plate with a new manifold, the first drain valve connected to the main supply line of the backup coolant distribution unit and the second drain valve connected to the main return line must be closed first to ensure the temporary supply circuit is completely cut off. Then, the first and second hoses connected to the first drain valve and the temporary manifold, and the second drain valve and the temporary manifold, respectively, are disassembled. The interfaces of the first and second drain valves are sealed to prevent coolant leakage or impurities from entering. Next, the previously closed first maintenance valve of the main supply line of the backup coolant distribution unit and the second maintenance valve of the main return line are gradually opened to restore the normal coolant supply path to the backup coolant distribution unit. Finally, the backup coolant distribution unit, which had exited the group control mode, is re-added to the group control mode, returning the liquid cooling system to its original primary / backup operating architecture. Afterward, the server's operating status is monitored for 30 minutes to confirm that the flow rate and temperature are normal.

[0093] The above steps, by orderly disconnecting temporary circuits and sealing interfaces, can effectively prevent coolant leakage and the intrusion of external contaminants within the system, ensuring the sealing and cleanliness of the liquid cooling system. Gradually opening maintenance valves can avoid sudden changes in supply pressure from impacting system pipelines and server cold plates, ensuring a smooth transition in flow and temperature. Reintegrating the backup coolant distribution unit into the group control mode can quickly restore the redundancy guarantee capability of the liquid cooling system's primary / backup mode, improving the overall reliability and fault resistance of the system. At the same time, it enables coordinated control of each coolant distribution unit, ensuring that the server cold plates continuously receive a stable and uniform supply of cooling, maintaining uninterrupted and efficient operation of intelligent computing services.

[0094] In some embodiments, the maintenance valve includes a loop valve and an isolation valve; and / or, the first hose and the second hose are flexible delivery pipes.

[0095] Specifically, to ensure the isolation effect between the standby coolant distribution unit and the main system network, and the safety of maintenance operations, the maintenance valves include loop valves and isolation valves. The loop valves primarily control the connection and disconnection of the main loop between the standby coolant distribution unit and the main supply and return network of the liquid cooling system. The isolation valves further disconnect the standby coolant distribution unit from the main network, forming a double isolation system. This prevents coolant leakage or system cross-flow caused by a single valve failure, creating a safe working environment for subsequent operations such as connecting temporary manifolds and replacing old manifolds. Simultaneously, considering the flexibility of on-site installation space and the connection of different equipment... To meet the compatibility requirements between the ports, both the first hose (connecting the drain valve on the supply side of the standby coolant distribution unit to the temporary manifold) and the second hose (connecting the drain valve on the return side of the standby coolant distribution unit to the temporary manifold) are flexible delivery pipes. These flexible delivery pipes have excellent bending adaptability, allowing for flexible adjustment of the route while meeting installation requirements with a bending radius ≥30cm. They can effectively adapt to different installation spacings and interface positions between the drain valve and the temporary manifold. Furthermore, their resistance to coolant corrosion and pressure ensures the sealing and stability of the temporary supply circuit, avoiding coolant leakage and flow fluctuations caused by insufficient pipe rigidity or poor compatibility. A 3 / 4" EPDM hose (3 / 4" pagoda connector) can be used to connect the drain valve.

[0096] Furthermore, in conjunction with the online replacement method for the manifold in the above embodiments, this application embodiment can provide a storage medium for implementation. This storage medium stores a computer program; when executed by a processor, the computer program implements any of the online replacement methods for the manifold in the above embodiments.

[0097] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0098] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0099] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for online replacement of manifolds, applied to a liquid cooling system including a primary coolant distribution unit, a backup coolant distribution unit, multiple manifolds, multiple server cold plates, a return main network, and a supply main network; The primary coolant distribution unit and the backup coolant distribution unit operate in a group control mode, characterized in that they include: The backup coolant distribution unit is removed from the group control mode and switched to stand-alone mode. The backup coolant distribution unit is shut down, and the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network are also shut down. Connect one end of the first hose to the first drain valve of the backup coolant distribution unit in the main supply network, and connect one end of the second hose to the second drain valve of the backup coolant distribution unit in the main return network; connect a pre-deployed temporary manifold between the other ends of the first hose and the second hose; open the first drain valve and the second drain valve; The backup coolant distribution unit is activated, and the faulty manifold connected to the server cold plate is replaced with the temporary manifold, so that the backup coolant distribution unit, the first hose, the temporary manifold, the server cold plate, and the second hose form a temporary passage. If the temporary access is operational, remove the faulty manifold and replace it with a pre-prepared new manifold; open the valve of the new manifold and replace the temporary manifold connected to the server cold plate with the new manifold.

2. The method for online replacement of the manifold according to claim 1, characterized in that, The step of shutting down the backup coolant distribution unit, and closing the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network, includes: The main coolant distribution unit reduces the supply temperature of the coolant to a preset temperature in the group control mode; Shut down the backup coolant distribution unit and observe the first operating status of the main coolant distribution unit; When the first operating state is normal, close the first maintenance valve of the backup coolant distribution unit in the main supply network and the second maintenance valve in the main return network to isolate the backup coolant distribution unit.

3. The method for online replacement of the manifold according to claim 1, characterized in that, The connection of a pre-deployed temporary manifold between the other end of the first hose and the other end of the second hose includes: Connect the other end of the first hose and the other end of the second hose to the supply port and return port of the temporary manifold, respectively, and connect the distribution interface of the corresponding supply port and the collection interface of the corresponding return port of the temporary manifold through a short-connecting hose to form a temporary internal passage.

4. The method for online replacement of the manifold according to claim 1, characterized in that, The step of activating the backup coolant distribution unit and replacing the faulty manifold connected to the server cold plate with the temporary manifold includes: Using the backup coolant distribution unit, coolant is injected into the temporary manifold through the first hose; Start the backup coolant distribution unit and adjust the flow parameters to a preset range, then observe the second operating state of the backup coolant distribution unit; When the second operating state is normal, close the valve of the faulty manifold, and unplug the quick connector on the faulty manifold and connect it to the temporary manifold; the quick connector is the connector that connects the server cold plate to the manifold.

5. The method for online replacement of the manifold according to claim 4, characterized in that, The step of injecting coolant into the temporary manifold through the first hose using the backup coolant distribution unit includes: Open the vent valve on top of the temporary manifold and control the backup coolant distribution unit to output coolant through the first hose at a preset flow rate until no more air bubbles are discharged from the vent valve.

6. The method for online replacement of the manifold according to claim 4, characterized in that, The step of opening the valve of the new manifold and replacing the temporary manifold connected to the server cold plate with the new manifold includes: Open the valve of the new manifold and disconnect the quick connector from the quick connector on the temporary manifold and connect it to the new manifold.

7. The method for online replacement of the manifold according to claim 6, characterized in that, The step of opening the valve of the new manifold and disconnecting the quick connector from the quick connector on the temporary manifold and connecting it to the new manifold includes: Open the valve of the new manifold and use the main coolant distribution unit to replenish the new manifold until the system pressure reaches the preset pressure range; Remove the quick connector from the temporary manifold and connect it to the new manifold one by one.

8. The method for online replacement of the manifold according to claim 1, characterized in that, After replacing the temporary manifold connected to the server cold plate with the new manifold, the method further includes: Close the first drain valve and the second drain valve, and disconnect the first hose and the second hose to seal the interfaces of the first drain valve and the second drain valve; Gradually open the first maintenance valve and the second maintenance valve, and add the backup coolant distribution unit to the group control mode.

9. The method for online replacement of the manifold according to claim 1, characterized in that, The maintenance valves include loop valves and isolation valves; and / or, the first hose and the second hose are flexible delivery pipes.

10. A storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute, when running, the method for online replacement of the manifold as described in any one of claims 1 to 9.

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