A cooling control method, device and cooling system

Abstract

The application discloses a kind of cooling control method, device and cooling system.The method comprises: detecting that cooling tower is damaged or system enters emergency cooling mode;Control the cold supply of cold storage tank to terminal equipment;When the temperature of cold storage tank water rises to the first preset temperature, start the water chiller, and according to the damage of cooling tower, control the cold storage tank to condenser in water chiller Radiate, or, control the cold storage tank and cooling tower cooperate to condenser Radiate, so that the water chiller supplies cold to terminal equipment.The application first applies the cold storage tank to the freezing side when the cooling tower is damaged, then applies the cold storage tank to the cooling side when the temperature of cold storage tank water rises to a certain temperature, starts the water chiller, and controls the cold storage tank and cooling tower to condenser in water chiller Radiate according to the damage of cooling tower, through the energy multistage utilization of cold water in cold storage tank, ensures the normal operation of water chiller for a certain time when the cooling tower is damaged, provides long enough time for maintenance and system recovery, and is more energy-saving.

Description

Technical Field

[0001] This invention relates to the field of cooling technology, and more specifically, to a cooling control method, apparatus, and cooling system. Background Technology

[0002] Data centers house electronic computer systems, servers, communication systems, and other equipment that operate 24 / 7 for data processing, storage, and network communication. These devices generate a lot of heat, causing the temperature in the data center to rise. To ensure the normal operation of the equipment, it is necessary to provide uninterrupted cooling to the data center throughout the year, and the cooling system must have extremely high reliability and energy efficiency.

[0003] In Class A and B data centers, a chilled water cooling system is typically used for cooling. To ensure reliable power supply, a diesel generator system is installed as a backup for municipal power. When the municipal power supply fails, the chiller units connected to it lose power and stop providing cooling. The diesel generator must then be started to supply power to the chiller units, a process that generally takes 10-15 minutes. To prevent server racks from shutting down due to excessively high temperatures during this time, a water storage tank is usually installed in the chilled water cooling system to provide emergency cooling for a period of time. If the cooling tower is damaged due to unforeseen circumstances (such as a typhoon), the entire cooling system will cease operation, causing the data center servers to shut down due to overheating, resulting in significant losses.

[0004] There is currently no effective solution to the problem of chiller units failing to operate properly due to cooling tower damage in existing technologies. Summary of the Invention

[0005] This invention provides a cooling control method, device, and cooling system to at least solve the problem in the prior art where damage to the cooling tower causes the chiller unit to malfunction.

[0006] To solve the above-mentioned technical problems, embodiments of the present invention provide a cooling control method, including:

[0007] The cooling tower is detected to be damaged or the system has entered emergency cooling mode.

[0008] Control the supply of cooling from the cold storage tank to the terminal equipment;

[0009] When the water temperature in the cold storage tank rises to the first preset temperature, the chiller unit is turned on, and depending on the damage to the cooling tower, the cold storage tank is controlled to dissipate heat to the condenser in the chiller unit, or the cold storage tank is controlled to cooperate with the cooling tower to dissipate heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment.

[0010] Optionally, a first water supply pipeline and a first water return pipeline are connected between the condenser and the cooling tower, and the cold storage tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger.

[0011] Depending on the extent of damage to the cooling tower, the system controls the cold storage tank to dissipate heat from the condenser in the chiller unit, or controls the cold storage tank to work in conjunction with the cooling tower to dissipate heat from the condenser, including:

[0012] If the fan and packing in the cooling tower are both damaged, the water in the cold storage tank is controlled to exchange heat with the cooling water in the condenser through the heat exchanger in order to dissipate heat from the condenser.

[0013] If only the fan in the cooling tower is damaged, then the cold storage tank is controlled to work in conjunction with the cooling tower to dissipate heat from the condenser.

[0014] Optionally, controlling the water in the cold storage tank to exchange heat with the cooling water in the condenser through the heat exchanger includes:

[0015] Turn on the water pump and valve on the pipeline connecting the cold storage tank and the heat exchanger, turn on the water pump and valve on the pipeline connecting the heat exchanger and the condenser, and close the cooling tower and its supply and return water valves;

[0016] Monitor the return water temperature of the condenser;

[0017] The water flow rate from the cold storage tank to the heat exchanger is adjusted according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

[0018] Optionally, adjusting the water flow rate from the cold storage tank into the heat exchanger based on the return water temperature of the condenser includes:

[0019] If the return water temperature of the condenser is greater than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By increasing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank to the heat exchanger is increased.

[0020] If the return water temperature of the condenser is lower than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By reducing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank into the heat exchanger is reduced.

[0021] Optionally, controlling the cold storage tank to cooperate with the cooling tower to dissipate heat from the condenser includes:

[0022] Turn on the water pump and valve on the pipeline connecting the cold storage tank and the heat exchanger, turn on the water pump and valve on the pipeline connecting the heat exchanger and the condenser, and turn on the cooling tower and its supply and return water valves;

[0023] Monitor the return water temperature of the condenser;

[0024] The water flow rate entering the cooling tower from the condenser is adjusted according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

[0025] Optionally, adjusting the water flow rate from the condenser to the cooling tower based on the return water temperature of the condenser includes:

[0026] If the return water temperature of the condenser is greater than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, and reduce the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the maximum to make the return water temperature of the condenser equal to the second preset temperature.

[0027] If the return water temperature of the condenser is lower than the second preset temperature, close the heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser. If the return water temperature of the condenser is still lower than the second preset temperature, increase the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

[0028] Optionally, after reducing the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from its maximum value, the method further includes:

[0029] If the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower reaches the minimum opening and the return water temperature of the condenser is still greater than the second preset temperature, then the opening of the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

[0030] Optionally, the terminal device is connected to the evaporator in the chiller unit by a second water supply pipeline and a second water return pipeline. The first port of the cold storage tank is connected to the second water supply pipeline through the first pipeline, and the second port of the cold storage tank is connected to the second water return pipeline through the second pipeline. Both the first pipeline and the second pipeline are equipped with valves.

[0031] The method further includes:

[0032] When the chiller unit load is detected to be lower than a preset threshold and the water temperature of the cold storage tank is higher than a third preset temperature, all valves on the first pipeline and the second pipeline are opened so that the evaporator can store cold in the cold storage tank.

[0033] When the water temperature in the cold storage tank equals the third preset temperature, the cold storage is complete.

[0034] Optionally, the second port of the cold storage tank is also connected to the second return water pipeline via a third pipeline, and the third pipeline is equipped with a valve;

[0035] Controlling the supply of cooling from the cold storage tank to the end equipment includes:

[0036] Turn on the chilled water pump and open the valves on the first and third pipelines to allow the cold storage tank to supply cooling to the terminal equipment through the first and third pipelines.

[0037] This invention also provides a cooling control device, comprising:

[0038] The detection module is used to detect if the cooling tower is damaged or the system enters emergency cooling mode;

[0039] The first control module is used to control the cold storage tank to supply cold to the terminal equipment;

[0040] The second control module is used to start the chiller unit when the water temperature in the cold storage tank reaches the first preset temperature, and to control the cold storage tank to dissipate heat to the condenser in the chiller unit according to the damage to the cooling tower, or to control the cold storage tank to cooperate with the cooling tower to dissipate heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment.

[0041] This invention also provides a cooling system, including: terminal equipment, a chiller unit, a cooling tower, a cold storage tank, and the cooling control device described in this invention.

[0042] This invention also provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described in this invention.

[0043] This invention also provides a non-volatile computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described in this invention.

[0044] By applying the technical solution of this invention, in the event of a cooling tower failure or the system entering emergency cooling mode, the cold storage tank is first applied to the refrigeration side, the chiller unit is shut down, and the cold storage tank supplies cooling to the terminal equipment to achieve emergency cooling on the refrigeration side. When the water temperature in the cold storage tank rises to the first preset temperature, the direct cooling supply from the cold storage tank cannot effectively dissipate heat to the terminal equipment. At this time, the cold storage tank is applied to the cooling side, the chiller unit is turned on, and the cold storage tank and the cooling tower are controlled to dissipate heat to the condenser in the chiller unit according to the damage to the cooling tower, thereby achieving emergency cooling on the cooling side so that the chiller unit can supply cooling to the terminal equipment. By utilizing the energy of the chilled water in the cold storage tank in multiple stages, the chiller unit can still operate normally for a certain period of time even if the cooling tower is damaged or the system enters emergency cooling mode. This avoids the problem of the chiller unit shutting down due to high temperature, ensuring the uninterrupted and safe operation of the entire cooling system for a longer period of time. It provides sufficient time for cooling tower maintenance and system restoration, ensuring the safe operation of the entire cooling system. It is also more energy-efficient, promoting the energy saving and safety of the overall system and solving the problem of chiller unit failure due to cooling tower damage. Attached Figure Description

[0045] Figure 1 This is a flowchart of the cooling control method provided in Embodiment 1 of the present invention;

[0046] Figure 2 This is a schematic diagram of the cooling system provided in Embodiment 2 of the present invention;

[0047] Figure 3 This is a structural block diagram of the cooling control device provided in Embodiment 3 of the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0051] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0052] Example 1

[0053] This embodiment provides a cooling control method applicable to chilled water cooling systems, which can ensure the normal operation of the chiller unit even when the cooling tower is damaged, thereby ensuring the cooling of the terminal equipment.

[0054] Figure 1 This is a flowchart of the cooling control method provided in Embodiment 1 of the present invention, as follows: Figure 1 As shown, the method includes the following steps:

[0055] S101, a cooling tower malfunction has been detected or the system has entered emergency cooling mode.

[0056] S102 controls the cold storage tank to supply cooling to the terminal equipment.

[0057] S103, when the water temperature in the cold storage tank rises to the first preset temperature, the chiller unit is turned on, and depending on the damage to the cooling tower, the cold storage tank is controlled to dissipate heat to the condenser in the chiller unit, or the cold storage tank and the cooling tower are controlled to cooperate in dissipating heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment.

[0058] In this system, chilled water supplied by the evaporator in the chiller unit can be used to store chilled water in the cold storage tank during operation. After storage, the water temperature in the cold storage tank becomes the target chilled water supply temperature for the evaporator. The first preset temperature can be set according to actual conditions; for example, it can be set to the target chilled water return temperature for the evaporator. The target chilled water return temperature for the evaporator is higher than the target chilled water supply temperature.

[0059] Cooling towers can be damaged by typhoons and other weather events. The extent of this damage indicates whether the cooling tower can still exchange heat. For example, if both the packing material and the fan are damaged, the cooling tower cannot exchange heat. If the packing material is intact but the fan is damaged, the cooling tower can exchange heat, albeit with reduced efficiency. If the cooling tower cannot exchange heat, a chilled water storage tank is used on the cooling side to dissipate heat from the condenser. If the cooling tower can exchange heat, it can participate in the operation of a chiller unit, with the chilled water storage tank used on the cooling side to work in conjunction with the cooling tower to dissipate heat from the condenser.

[0060] This embodiment can automatically execute relevant controls after detecting damage to the cooling tower, or it can execute relevant controls after receiving an instruction to enter the emergency cooling mode. The instruction to enter the emergency cooling mode is generally issued when the cooling tower is damaged or under repair.

[0061] In this embodiment, when the cooling tower is damaged or the system enters emergency cooling mode, the cold storage tank is first applied to the chilled water side, the chiller unit is shut down, and the cold storage tank supplies cooling to the terminal equipment, achieving emergency cooling on the chilled water side. When the water temperature in the cold storage tank rises to the first preset temperature, direct cooling from the cold storage tank cannot effectively dissipate heat to the terminal equipment. At this time, the cold storage tank is applied to the cooling side, the chiller unit is turned on, and the cold storage tank and cooling tower are controlled to dissipate heat to the condenser in the chiller unit according to the extent of the cooling tower damage, achieving emergency cooling on the cooling side, so that the chiller unit can supply cooling to the terminal equipment. By utilizing the energy of the cold water in the cold storage tank in multiple stages, the chiller unit can still operate normally for a certain period of time when the cooling tower is damaged or the system enters emergency cooling mode, avoiding the problem of high-temperature shutdown protection of the chiller unit, ensuring the uninterrupted and safe operation of the entire cooling system for a longer period of time, providing sufficient time for cooling tower repair and system restoration, ensuring the safe operation of the entire cooling system, and being more energy-efficient, promoting the energy efficiency and safety of the overall system, and solving the problem of the chiller unit not working properly due to cooling tower damage.

[0062] In one embodiment, a first water supply pipeline and a first water return pipeline are connected between the condenser and the cooling tower, and a cold storage tank is connected to the first water supply pipeline and the first water return pipeline via a heat exchanger. Here, water supply refers to cooling water flowing from the condenser to the cooling tower, and water return refers to cooling water flowing from the cooling tower back to the condenser. Specifically, depending on the damage to the cooling tower, the cold storage tank is controlled to dissipate heat from the condenser in the chiller unit, or the cold storage tank is controlled to cooperate with the cooling tower to dissipate heat from the condenser. This includes: if both the fan and packing in the cooling tower are damaged, the water in the cold storage tank is controlled to exchange heat with the cooling water in the condenser through the heat exchanger to dissipate heat from the condenser; if only the fan in the cooling tower is damaged, the cold storage tank is controlled to cooperate with the cooling tower to dissipate heat from the condenser.

[0063] In this embodiment, the water in the cold storage tank exchanges heat with the high-temperature water in the condenser through a heat exchanger. Depending on the different damage conditions of the cooling tower, the cold storage tank can dissipate heat to the condenser alone or in conjunction with the cooling tower to dissipate heat to the condenser, ensuring the normal operation of the cooling side of the chiller unit in the event of cooling tower damage and avoiding high-temperature shutdown protection of the chiller unit.

[0064] Specifically, controlling the water in the cold storage tank to exchange heat with the cooling water in the condenser through the heat exchanger includes: turning on the water pump and valve on the connecting pipeline between the cold storage tank and the heat exchanger, turning on the water pump and valve on the connecting pipeline between the heat exchanger and the condenser, and turning off the cooling tower and its supply and return water valves; monitoring the return water temperature of the condenser (the actual temperature detected by the temperature sensor); and adjusting the water flow rate from the cold storage tank to the heat exchanger according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

[0065] The second preset temperature can be set according to actual conditions. The second preset temperature is higher than the first preset temperature. For example, the second preset temperature can be set as the target cooling water return temperature of the condenser. The target cooling water return temperature of the condenser is lower than the target cooling water supply temperature of the condenser.

[0066] This embodiment controls the pipeline connection between the cold storage tank, heat exchanger, and condenser, so that the cold storage tank is used on the cooling side to dissipate heat from the condenser separately, and the return water temperature of the condenser is ensured to meet the requirements by controlling the water flow rate, thereby ensuring the normal operation of the chiller unit.

[0067] Furthermore, based on the return water temperature of the condenser, the water flow rate from the cold storage tank to the heat exchanger is adjusted, including:

[0068] If the return water temperature of the condenser is greater than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger except for the heat exchanger inlet valve to the maximum opening, and adjust the heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser to the maximum opening. By increasing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank to the heat exchanger can be increased.

[0069] If the return water temperature of the condenser is lower than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, to their maximum opening. Adjust the heat exchanger inlet valve and heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser to their maximum opening. By reducing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank to the heat exchanger can be reduced.

[0070] This embodiment controls the water flow rate from the cold storage tank to the heat exchanger by adjusting the valve, so that the return water temperature of the condenser is equal to the second preset temperature, thereby ensuring the normal operation of the cooling unit.

[0071] Specifically, controlling the cold storage tank and cooling tower to dissipate heat from the condenser includes: turning on the water pump and valve on the connecting pipeline between the cold storage tank and the heat exchanger, turning on the water pump and valve on the connecting pipeline between the heat exchanger and the condenser, and turning on the cooling tower and its supply and return water valves; monitoring the return water temperature of the condenser (the actual temperature detected by a temperature sensor); and adjusting the water flow rate from the condenser to the cooling tower according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

[0072] This embodiment controls the connection of pipelines between the cold storage tank, heat exchanger, and condenser, and turns on the cooling tower so that the cold storage tank is used on the cooling side to cooperate with the cooling tower to dissipate heat from the condenser. By controlling the water flow rate, the return water temperature of the condenser is ensured to meet the requirements, thereby ensuring the normal operation of the chiller unit.

[0073] Furthermore, based on the return water temperature of the condenser, the water flow rate entering the cooling tower from the condenser is adjusted, including:

[0074] If the return water temperature of the condenser is greater than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, and reduce the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the maximum to make the return water temperature of the condenser equal to the second preset temperature.

[0075] If the return water temperature of the condenser is lower than the second preset temperature, close the inlet valve and outlet valve of the heat exchanger on the connecting pipe between the heat exchanger and the condenser. If the return water temperature of the condenser is still lower than the second preset temperature, increase the opening of the water supply valve on the first water supply pipe from the condenser to the cooling tower from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

[0076] This embodiment controls the water flow rate from the condenser to the cooling tower by adjusting relevant valves, so that the return water temperature of the condenser is equal to the second preset temperature, thereby ensuring the normal operation of the cooling unit.

[0077] Furthermore, after reducing the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from its maximum value, the following steps are also included:

[0078] If the water supply valve on the first water supply pipeline from the condenser to the cooling tower reaches its minimum opening and the return water temperature of the condenser is still greater than the second preset temperature, then the opening of the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser will be increased from its minimum to make the return water temperature of the condenser equal to the second preset temperature.

[0079] In this embodiment, if the water supply valve on the first water supply pipeline from the condenser to the cooling tower cannot be adjusted successfully, the water outlet valve on the connecting pipeline between the heat exchanger and the condenser can be further adjusted to ensure that the condenser return water temperature meets the requirements. This method is simple and effective.

[0080] When the terminal load is low (e.g., the number of server racks in the data center is small), starting the chiller unit will cause frequent start-stop of the chiller unit. This embodiment uses the online cold storage process of the cold storage tank to increase the load and solve the problem of frequent start-stop of the chiller unit when the terminal load is low.

[0081] Specifically, a second supply water line and a second return water line connect the terminal equipment to the evaporator in the chiller unit. The first port of the chilled water storage tank is connected to the second supply water line via a first line, and the second port of the chilled water storage tank is connected to the second return water line via a second line. Both the first and second lines are equipped with valves. Here, the supply water refers to the flow of chilled water from the evaporator to the terminal equipment, and the return water refers to the flow of chilled water from the terminal equipment back to the evaporator.

[0082] The above method also includes: when the load of the chiller unit is detected to be lower than the preset threshold and the water temperature of the cold storage tank is higher than the third preset temperature, opening all valves on the first and second pipelines to allow the evaporator to store cold in the cold storage tank; when the water temperature of the cold storage tank is equal to the third preset temperature, the cold storage is completed.

[0083] The preset threshold is used to determine whether the system is operating at a low load. This can be determined by the temperature difference between the supply and return water of the evaporator. For example, if the temperature difference between the supply and return water of the evaporator is less than the preset threshold, it indicates that the cooling capacity required at the terminal is low, and the chiller unit is currently operating at a low load. The third preset temperature can be set according to actual conditions. For example, the third preset temperature can be set to the target chilled water supply temperature of the evaporator.

[0084] This implementation method utilizes online cold storage tanks to increase the terminal load, enhance the system's adaptability to changes in external load, weaken the impact of load changes on the chiller unit, and enable the chiller unit to operate in a relatively efficient range. This not only solves the problem of frequent start-ups and shutdowns of the chiller unit when the terminal load is low, but also promotes energy saving of the overall system.

[0085] In one embodiment, the second port of the cold storage tank is also connected to a second return water pipe via a third pipe, which is equipped with a valve. Controlling the cold storage tank to supply cooling to the end-user equipment includes: starting the chilled water pump and opening the valves on the first and third pipes, so that the cold storage tank supplies cooling to the end-user equipment through the first and third pipes. That is, the cold storage tank supplies cooling to the end-user equipment through the first pipe, and chilled water flows back to the cold storage tank through the third pipe. This embodiment allows the cold storage tank to release cooling water to supply the end-user equipment by controlling the valves.

[0086] If the cooling tower is not damaged, the cold storage tank can be controlled to supply cooling to the terminal equipment together with the chiller unit.

[0087] It should be noted that the number of valves installed on each of the above-mentioned connecting pipelines can be set according to actual needs, and this embodiment does not impose any restrictions on this.

[0088] Example 2

[0089] The cooling control method described above will be illustrated below with reference to a specific embodiment. However, it is worth noting that this specific embodiment is only for better illustration of this application and does not constitute an undue limitation of this application. The same or corresponding terminology used in the above embodiment will not be repeated in this embodiment.

[0090] like Figure 2 The diagram shows a cooling system, which includes: terminal equipment 1, chilled water pump 2, chiller unit 3, cooling water pump 4, cooling tower 5, cold storage tank 6, cold water discharge pump 7, and plate heat exchanger 8. V1 to V18 are valves, specifically electrically operated proportional regulating valves (hereinafter referred to as water valves). T1 to T7 are temperature sensors.

[0091] The emergency cooling control method for the cold storage tank in this embodiment achieves control in different modes through the cold storage tank, plate heat exchanger, corresponding electrically adjustable proportional valve, and temperature sensor, thereby promoting energy saving and safety of the overall system. The cold energy stored in the cold storage tank can be used for emergency cooling, ensuring the safe operation of the system. The various modes are described below.

[0092] (1) Online cold storage mode of cold storage tank

[0093] When the number of server racks operating in the data center is small, the system is in a low-load state. At this time, terminal equipment 1 is turned on, chilled water pump 2 is turned on, chiller unit 3 is turned on, cooling water pump 4 is turned on, cooling tower 5 is turned on, and water valves V1-V7, V9-V10, and V16-V18 are all turned on. The remaining equipment (cooled water pump 7 and plate heat exchanger) and water valves V8 and V11-V15 are all turned off.

[0094] The 18°C ​​chilled water produced by the evaporator in chiller unit 3 is divided into two streams after passing through water valves V4 and V3. One stream enters terminal equipment 1 via V1 for heat exchange, while the other stream enters the cold storage tank 6 via V6 and V9 for cooling. After heat exchange, the two streams of water return to chiller unit 3 via chilled water pump 2 (specifically, one stream returns to chiller unit 3 via V2 and V5, and the other stream returns to chiller unit 3 via V10, V7, and V5). The cooling water in the condenser of chiller unit 3 then enters the cooling tower 5 for heat exchange.

[0095] When the water temperature in the cold storage tank reaches 18℃, the cold storage is complete. If the water temperature in the cold storage tank is higher than 18℃, the cold storage tank can be used for further cold storage.

[0096] (2) Online cooling mode of cold storage tank

[0097] When both temperature sensors T6 and T7 in the cold storage tank display a temperature of 18℃, it indicates that cold storage is complete. Using two temperature sensors to monitor the water temperature in the cold storage tank ensures accuracy. Of course, a single temperature sensor can also be used to monitor the water temperature in the cold storage tank.

[0098] When the cold storage tank needs to release cold, terminal equipment 1 is turned on, chilled water pump 2 is turned on, chiller unit 3 is turned on, cooling water pump 4 is turned on, cooling tower 5 is turned on, and water valves V1-V6, V8-V11, and V16-V18 are all turned on. The remaining equipment (cold water pump 7 and plate heat exchanger) and water valves V7 and V12-V15 are all turned off.

[0099] The 18°C ​​chilled water produced in the evaporator of chiller unit 3 and the 18°C ​​chilled water coming out of the cold storage tank 6 through water valves V9 and V6 are mixed and then supplied to the terminal equipment 1 for heat exchange. After heat exchange, the water comes out of the terminal equipment 1 and is divided into two paths after passing through V2 and chilled water pump 2. One path returns to chiller unit 3 through V5, and the other path returns to cold storage tank 6 through V8, V11 and V10.

[0100] (3) Emergency Cooling Mode 1 for Cold Storage Tank

[0101] During typhoons, when the cooling tower indicates that the fan and packing are damaged and need to be replaced and the fan repaired, it means that the cooling tower cannot exchange heat and enters the emergency cooling mode one of the cold storage tank. All the heat of the condenser is exchanged away through the cold storage tank and plate heat exchanger.

[0102] First, the 18°C ​​water in the cold storage tank 6 is preferentially released to the terminal equipment 1. At this time, the terminal equipment 1 is turned on, the chilled water pump 2 is turned on, and water valves V1, V2, V6, and V8 to V11 are all turned on. The remaining water valves V3 to V5, V7, V12 to V18 and the equipment (chiller unit 3, cooling water pump 4, cooling tower 5, cold water pump 7, and plate heat exchanger 8) are all turned off.

[0103] The chilled water in the cold storage tank 6 enters the terminal equipment 1 through water valves V9, V6, and V1 for cooling. After heat exchange in the terminal equipment 1, the water is pumped back to the cold storage tank 6 by the chilled water pump 2 through V8, V11, and V10. This cycle continues until the temperature displayed by temperature sensors T6, T7, and T2 reaches 23°C (three temperature sensors are used here to ensure accuracy and prevent misoperation; alternatively, only temperature sensor T2 can be used, and when the temperature of T2 is greater than or equal to 23°C and remains there for a preset time t), the chiller unit 3 is started by switching valves and equipment. This allows the 23°C chilled water in the cold storage tank 6 to be applied to the cooling side, ensuring the normal start-up of the chiller unit 3 and preventing high-temperature protection shutdown.

[0104] At this time, terminal equipment 1 is turned on, chilled water pump 2 is turned on, chiller unit 3 is turned on, cooling water pump 4 is turned on, cooling water pump 7 is turned on, plate heat exchanger 8 is turned on, water valves V1-V5, V9-V15, and V17 are all turned on, and the remaining water valves V6-V8, V16, V18 and equipment (i.e., cooling tower 5) are all turned off.

[0105] The 18°C ​​chilled water produced by the evaporator in chiller unit 3 enters terminal equipment 1. After heat exchange, the water returns to chiller unit 3 via chilled water pump 2. The high-temperature water in the condenser enters plate heat exchanger 8 via water valve V14 to exchange heat with the 23°C water from the cold storage tank. When temperature sensors T4 and T3 display a temperature of 32°C, the water after heat exchange in plate heat exchanger 8 returns to the condenser in chiller unit 3 via cooling water pump 4. Specifically, whether the water after heat exchange in plate heat exchanger 8 returns to the condenser can be controlled by opening and closing water valve 17.

[0106] When temperature sensors T3 and T4 display a temperature greater than 32°C, the openings of water valves V9, V10, V11, V13, V14, and V15 reach their maximum. By increasing the opening of water valve V12, the flow rate into plate heat exchanger 8 increases. The water temperature at temperature sensors T3 and T4 reaches 32°C before returning to chiller unit 3.

[0107] When temperature sensors T3 and T4 show a temperature less than 32°C, the openings of water valves V9, V10, V11, V13, V14, and V15 reach their maximum. By reducing the opening of water valve V12, the flow rate into plate heat exchanger 8 decreases. The water temperature at temperature sensors T3 and T4 returns to chiller unit 3 only after reaching 32°C.

[0108] (4) Emergency Cooling Mode 2 for Cold Storage Tank

[0109] When a cooling tower indicates a fan malfunction requiring replacement or repair, the cooling tower can still exchange heat through the packing material, albeit with reduced efficiency. In this situation, it enters emergency cooling mode two via the cold storage tank. Some of the heat from the condenser dissipates naturally through the cooling tower's packing material, while the remaining heat is carried away through the cold storage tank and plate heat exchanger. This extends the emergency cooling time for the entire data center, providing more time for troubleshooting or data backup.

[0110] First, similar to the emergency cooling mode 1 of the cold storage tank, the 18°C ​​cold water in the cold storage tank 6 is preferentially released to the terminal equipment 1. When the temperature sensors T6, T7 and T2 show a temperature of 23°C, the chiller unit 3 is operated by switching valves and equipment, so that the 23°C cold water in the cold storage tank 6 is used on the cooling side, ensuring the normal start-up of the chiller unit 3 and avoiding high temperature protection shutdown.

[0111] At this time, terminal equipment 1 is turned on, chilled water pump 2 is turned on, chiller unit 3 is turned on, cooling water pump 4 is turned on, cooling tower 5 is turned on, cooling water pump 7 is turned on, plate heat exchanger 8 is turned on, water valves V1 to V5 and V9 to V18 are all turned on, and the remaining water valves V6 to V8 are all turned off.

[0112] The 18°C ​​chilled water produced by the evaporator in chiller unit 3 enters terminal equipment 1. After heat exchange, the water becomes 23°C and returns to chiller unit 3 via chilled water pump 2. The high-temperature water in the condenser is divided into two paths: one path enters plate heat exchanger 8 via water valve V14 to exchange heat with the 23°C water from cold storage tank 6; the other path enters cooling tower 5 via water valve V16 to exchange heat with the packing material. When the temperature sensor T3 displays a temperature of 32°C, the heat-exchanged water returns to the condenser in chiller unit 3 via cooling water pump 4.

[0113] When the temperature sensor T3 displays a temperature greater than 32℃, the opening of water valves V9 to V13 reaches its maximum, while the openings of water valves V16 and V18 remain linked, as do the openings of water valves V14 and V15. The opening of water valve V16 is reduced from its maximum (minimum opening is set to 50%) to reduce the flow into the cooling tower and enhance the heat exchange of the plate heat exchanger 8, thereby ensuring that the temperature of the temperature sensor T3 reaches 32℃.

[0114] If the opening of water valve V16 reaches the minimum opening (50%), and the temperature sensor T3 still shows a temperature greater than 32℃, then the opening of water valve V15 will be increased from the minimum. This will allow the water passing through water valve V18 and water passing through water valve V15 to mix. Only after the water temperature in temperature sensor T3 reaches 32℃ will the water return to chiller unit 3.

[0115] When the temperature sensor T3 displays a temperature less than 32℃, the openings of water valves V16 and V18 remain linked, as do the openings of water valves V14 and V15. First, close water valves V14 and V15 and check the temperature displayed by the temperature sensor T3. If it is still less than 32℃, increase the opening of water valve V16 from its minimum (minimum opening set to 50%) to ensure that the temperature of the temperature sensor T3 is equal to 32℃.

[0116] In this embodiment, when the cooling tower is damaged due to unforeseen circumstances, the low-temperature chilled water in the cold storage tank is utilized in multiple stages, prioritizing its supply to the terminal equipment for cooling. Once the water temperature in the cold storage tank reaches a certain level (e.g., ≥23°C), the chiller unit is activated, and the 23°C chilled water in the cold storage tank is supplied to the cooling side. The chilled water in the cold storage tank exchanges heat with the high-temperature water in the condenser through a plate heat exchanger, ensuring that the cooling return water temperature to the chiller unit meets 32°C. This guarantees the normal operation of the chiller unit's cooling side in the event of cooling tower damage and avoids high-temperature shutdown protection issues. When the chiller unit requires maintenance, the low-temperature chilled water in the cold storage tank is first used on the refrigeration side for emergency cooling of the terminal equipment. When the water temperature in the cold storage tank reaches a certain level, the cold storage tank is used on the cooling side, changing its cooling target from cooling the terminal equipment to providing emergency heat dissipation for the condenser. This fully utilizes energy in multiple stages, ensuring the normal operation of the chiller unit. Furthermore, by utilizing the online cold storage process of the cold storage tank, the load can be increased, solving the problem of frequent start-stop of the chiller unit when the terminal load is low. This increases the system's adaptability to changes in external load, weakens the impact of load changes on the chiller unit, ensures that the chiller unit operates in the high-efficiency range, and ensures the energy saving of the overall system.

[0117] Example 3

[0118] Based on the same inventive concept, this embodiment provides a cooling control device that can be used to implement the cooling control method described in the above embodiments. This device can be implemented through software and / or hardware.

[0119] Figure 3 This is a structural block diagram of the cooling control device provided in Embodiment 3 of the present invention, as shown below. Figure 3 As shown, the device includes:

[0120] Detection module 31 is used to detect if the cooling tower is damaged or the system enters emergency cooling mode;

[0121] The first control module 32 is used to control the cold storage tank to supply cold to the terminal equipment;

[0122] The second control module 33 is used to start the chiller unit when the water temperature of the cold storage tank reaches the first preset temperature, and control the cold storage tank to dissipate heat to the condenser in the chiller unit according to the damage to the cooling tower, or control the cold storage tank to cooperate with the cooling tower to dissipate heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment.

[0123] Optionally, a first water supply pipeline and a first water return pipeline are connected between the condenser and the cooling tower, and the cold storage tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger.

[0124] The second control module 33 includes:

[0125] The first control unit is configured to, if both the fan and packing in the cooling tower are damaged, control the water in the cold storage tank to exchange heat with the cooling water in the condenser through the heat exchanger in order to dissipate heat from the condenser.

[0126] The second control unit is used to control the cold storage tank to cooperate with the cooling tower to dissipate heat from the condenser if only the fan in the cooling tower is damaged.

[0127] Optionally, the first control unit includes:

[0128] The first control subunit is used to turn on the water pump and valve on the connecting pipeline between the cold storage tank and the heat exchanger, turn on the water pump and valve on the connecting pipeline between the heat exchanger and the condenser, and turn off the cooling tower and its supply and return water valves.

[0129] The first monitoring subunit is used to monitor the return water temperature of the condenser;

[0130] The first regulating subunit is used to adjust the water flow rate from the cold storage tank into the heat exchanger according to the return water temperature of the condenser, so that the return water temperature of the condenser is equal to the second preset temperature.

[0131] Optionally, the first adjustment subunit is specifically used for:

[0132] If the return water temperature of the condenser is greater than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By increasing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank to the heat exchanger is increased.

[0133] If the return water temperature of the condenser is lower than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By reducing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank into the heat exchanger is reduced.

[0134] Optionally, the second control unit includes:

[0135] The second control subunit is used to turn on the water pump and valve on the connecting pipeline between the cold storage tank and the heat exchanger, turn on the water pump and valve on the connecting pipeline between the heat exchanger and the condenser, and turn on the cooling tower and its supply and return water valves.

[0136] The second monitoring subunit is used to monitor the return water temperature of the condenser;

[0137] The second regulating subunit is used to adjust the water flow rate from the condenser into the cooling tower according to the return water temperature of the condenser, so that the return water temperature of the condenser is equal to the second preset temperature.

[0138] Optionally, the second adjustment subunit is specifically used for:

[0139] If the return water temperature of the condenser is greater than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, and reduce the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the maximum to make the return water temperature of the condenser equal to the second preset temperature.

[0140] If the return water temperature of the condenser is lower than the second preset temperature, close the heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser. If the return water temperature of the condenser is still lower than the second preset temperature, increase the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

[0141] Optionally, the second adjustment subunit is also used for:

[0142] After reducing the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from its maximum value, if the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower reaches its minimum value and the return water temperature of the condenser is still greater than the second preset temperature, then the opening of the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from its minimum value so that the return water temperature of the condenser is equal to the second preset temperature.

[0143] Optionally, the terminal device is connected to the evaporator in the chiller unit by a second water supply pipeline and a second water return pipeline. The first port of the cold storage tank is connected to the second water supply pipeline through the first pipeline, and the second port of the cold storage tank is connected to the second water return pipeline through the second pipeline. Both the first pipeline and the second pipeline are equipped with valves.

[0144] The device further includes:

[0145] The cold storage module is used to open all valves on the first and second pipelines when the load of the chiller unit is detected to be lower than a preset threshold and the water temperature of the cold storage tank is higher than a third preset temperature, so that the evaporator can store cold in the cold storage tank; when the water temperature of the cold storage tank is equal to the third preset temperature, the cold storage is completed.

[0146] Optionally, the second port of the cold storage tank is also connected to the second return water pipeline via a third pipeline, and the third pipeline is equipped with a valve;

[0147] The first control module is specifically used to: turn on the chilled water pump and open the valves on the first pipeline and the third pipeline, so that the cold storage tank supplies cooling to the terminal equipment through the first pipeline and the third pipeline.

[0148] The above-described apparatus can execute the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the method provided in the embodiments of the present invention.

[0149] Example 4

[0150] This embodiment provides a cooling system, including: terminal equipment, a chiller unit, a cooling tower, a cold storage tank, and the cooling control device described in the above embodiment.

[0151] Example 5

[0152] This embodiment provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method described in the above embodiment.

[0153] Example 6

[0154] This embodiment provides a non-volatile computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the method described in the above embodiment.

[0155] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0156] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling control method, characterized in that, include: The cooling tower is detected to be damaged or the system has entered emergency cooling mode. Control the supply of cooling from the cold storage tank to the terminal equipment; When the water temperature in the cold storage tank rises to the first preset temperature, the chiller unit is turned on, and depending on the damage to the cooling tower, the cold storage tank is controlled to dissipate heat to the condenser in the chiller unit, or the cold storage tank is controlled to cooperate with the cooling tower to dissipate heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment. The condenser is connected to the cooling tower by a first water supply pipeline and a first water return pipeline, and the cold storage tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger. Depending on the extent of damage to the cooling tower, the system controls the cold storage tank to dissipate heat from the condenser in the chiller unit, or controls the cold storage tank to work in conjunction with the cooling tower to dissipate heat from the condenser, including: If the fan and packing in the cooling tower are both damaged, the water in the cold storage tank is controlled to exchange heat with the cooling water in the condenser through the heat exchanger in order to dissipate heat from the condenser. If only the fan in the cooling tower is damaged, then the cold storage tank is controlled to work in conjunction with the cooling tower to dissipate heat from the condenser.

2. The method according to claim 1, characterized in that, Controlling the water in the cold storage tank to exchange heat with the cooling water in the condenser through the heat exchanger includes: Turn on the water pump and valve on the pipeline connecting the cold storage tank and the heat exchanger, turn on the water pump and valve on the pipeline connecting the heat exchanger and the condenser, and close the cooling tower and its supply and return water valves; Monitor the return water temperature of the condenser; The water flow rate from the cold storage tank to the heat exchanger is adjusted according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

3. The method according to claim 2, characterized in that, Adjusting the water flow rate from the cold storage tank to the heat exchanger based on the return water temperature of the condenser includes: If the return water temperature of the condenser is greater than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By increasing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank to the heat exchanger is increased. If the return water temperature of the condenser is lower than the second preset temperature, then all valves on the connecting pipeline between the cold storage tank and the heat exchanger, except for the heat exchanger inlet valve, are adjusted to their maximum opening. The heat exchanger inlet valve and heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser are also adjusted to their maximum opening. By reducing the opening of the heat exchanger inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger, the water flow rate from the cold storage tank into the heat exchanger is reduced.

4. The method according to claim 1, characterized in that, Controlling the cold storage tank and the cooling tower to dissipate heat from the condenser includes: Turn on the water pump and valve on the pipeline connecting the cold storage tank and the heat exchanger, turn on the water pump and valve on the pipeline connecting the heat exchanger and the condenser, and turn on the cooling tower and its supply and return water valves; Monitor the return water temperature of the condenser; The water flow rate entering the cooling tower from the condenser is adjusted according to the return water temperature of the condenser so that the return water temperature of the condenser is equal to the second preset temperature.

5. The method according to claim 4, characterized in that, Adjusting the water flow rate from the condenser to the cooling tower based on the return water temperature of the condenser includes: If the return water temperature of the condenser is greater than the second preset temperature, adjust all valves on the connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, and reduce the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the maximum to make the return water temperature of the condenser equal to the second preset temperature. If the return water temperature of the condenser is lower than the second preset temperature, close the heat exchanger inlet valve and the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser. If the return water temperature of the condenser is still lower than the second preset temperature, increase the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

6. The method according to claim 5, characterized in that, After reducing the opening of the water supply valve on the first water supply pipeline supplying water from the condenser to the cooling tower from its maximum value, the method further includes: If the opening of the water supply valve on the first water supply pipeline from the condenser to the cooling tower reaches the minimum opening and the return water temperature of the condenser is still greater than the second preset temperature, then the opening of the heat exchanger outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from the minimum to make the return water temperature of the condenser equal to the second preset temperature.

7. The method according to any one of claims 1 to 6, characterized in that, The terminal equipment is connected to the evaporator in the chiller unit by a second water supply pipeline and a second water return pipeline. The first port of the cold storage tank is connected to the second water supply pipeline through a first pipeline, and the second port of the cold storage tank is connected to the second water return pipeline through a second pipeline. Both the first pipeline and the second pipeline are equipped with valves. The method further includes: When the chiller unit load is detected to be lower than a preset threshold and the water temperature of the cold storage tank is higher than a third preset temperature, all valves on the first pipeline and the second pipeline are opened so that the evaporator can store cold in the cold storage tank. When the water temperature in the cold storage tank equals the third preset temperature, the cold storage is complete.

8. The method according to claim 7, characterized in that, The second port of the cold storage tank is also connected to the second return water pipeline via a third pipeline, and the third pipeline is equipped with a valve; Controlling the supply of cooling from the cold storage tank to the end equipment includes: Turn on the chilled water pump and open the valves on the first and third pipelines to allow the cold storage tank to supply cooling to the terminal equipment through the first and third pipelines.

9. A cooling control device, characterized in that, include: The detection module is used to detect if the cooling tower is damaged or the system enters emergency cooling mode; The first control module is used to control the cold storage tank to supply cold to the terminal equipment; The second control module is used to start the chiller unit when the water temperature of the cold storage tank reaches the first preset temperature, and control the cold storage tank to dissipate heat to the condenser in the chiller unit according to the damage to the cooling tower, or control the cold storage tank to cooperate with the cooling tower to dissipate heat to the condenser, so that the chiller unit can supply cooling to the terminal equipment. The condenser is connected to the cooling tower by a first water supply pipeline and a first water return pipeline, and the cold storage tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger. Depending on the extent of damage to the cooling tower, the system controls the cold storage tank to dissipate heat from the condenser in the chiller unit, or controls the cold storage tank to work in conjunction with the cooling tower to dissipate heat from the condenser, including: If the fan and packing in the cooling tower are both damaged, the water in the cold storage tank is controlled to exchange heat with the cooling water in the condenser through the heat exchanger in order to dissipate heat from the condenser. If only the fan in the cooling tower is damaged, then the cold storage tank is controlled to work in conjunction with the cooling tower to dissipate heat from the condenser.

10. A cooling system, characterized in that, include: Terminal equipment, chiller unit, cooling tower, cold storage tank, and cooling control device as described in claim 9.

11. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the steps of the method according to any one of claims 1 to 8.

12. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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