CN117355101A - Cold supply control method, device and cold supply system - Google Patents

Abstract

The invention discloses a cooling control method, a cooling control device and a cooling system. The method comprises the following steps: detecting a cooling tower failure or a system entering an emergency cooling mode; controlling the cold accumulation tank to supply cold to the terminal equipment; when the temperature of the cold accumulation tank is raised to a first preset temperature, the water chilling unit is started, and the cold accumulation tank is controlled to radiate heat for a condenser in the water chilling unit according to the damage condition of the cooling tower, or the cold accumulation tank and the cooling tower are controlled to cooperate to radiate heat for the condenser, so that the water chilling unit supplies cold to terminal equipment. When the cooling tower is damaged, the cold storage tank is firstly applied to the freezing side, when the temperature of the water in the cold storage tank rises to a certain temperature, the cold storage tank is applied to the cooling side, the water chilling unit is started, the cold storage tank and the cooling tower are controlled to dissipate heat for the condenser in the water chilling unit according to the damage condition of the cooling tower, the cold water in the cold storage tank is subjected to energy multi-stage utilization, the normal operation of the water chilling unit for a certain time is ensured when the cooling tower is damaged, and enough time is provided for maintenance and system recovery, and the cooling tower is energy-saving.

Description

Cold supply control method, device and cold supply system

Technical Field

The invention relates to the technical field of cooling, in particular to a cooling control method, a cooling control device and a cooling system.

Background

The data computer room is internally provided with data processing, storing and network communication equipment which runs for 24 hours all the year round, such as an electronic computer system, a server, a communication system and the like, the equipment generates large heat, the temperature in the data computer room is increased, uninterrupted cooling is required to be carried out on the data computer room all the year round for ensuring the normal running of the equipment, and the cooling system is required to have extremely high reliability and relatively low energy consumption.

In A, B-level data machine room, a cold water cooling system is generally adopted for cooling, and meanwhile, in order to ensure the safety and reliability of machine room electricity utilization, a diesel generator power supply system is arranged for municipal power supply. When municipal power supply fails, the refrigerating unit connected with the municipal power supply loses power and stops supplying cold, at the moment, the diesel generator is started to supply power for the refrigerating unit, and the process of starting and normally supplying cold for the refrigerating unit generally needs 10-15 minutes. In order to prevent the cabinet in the data machine room from being down due to too high indoor temperature in the period of time, a chilled water storage tank is usually arranged in a chilled water cooling system, so that emergency cooling for a period of time is ensured. When the cooling tower is damaged by some factors that are not resistant (such as typhoons), the entire refrigeration system will not work, and the servers of the data room will be down due to temperature rise, resulting in significant losses.

Aiming at the problem that the cooling tower in the prior art is damaged to cause the water chilling unit to work abnormally, no effective solution is proposed at present.

Disclosure of Invention

The embodiment of the invention provides a cooling control method, a cooling control device and a cooling system, which are used for at least solving the problem that a cooling tower is damaged to cause that a water chilling unit cannot work normally in the prior art.

In order to solve the above technical problems, an embodiment of the present invention provides a cooling control method, including:

detecting a cooling tower failure or the system entering an emergency cooling mode;

controlling the cold accumulation tank to supply cold to the terminal equipment;

when the temperature of the cold accumulation tank is raised to a first preset temperature, a water chilling unit is started, and the cold accumulation tank is controlled to radiate heat to a condenser in the water chilling unit according to the damage condition of a cooling tower, or the cold accumulation tank and the cooling tower are controlled to cooperate to radiate heat to the condenser, so that the water chilling unit supplies cold to terminal equipment.

Optionally, a first water supply pipeline and a first water return pipeline are connected between the condenser and the cooling tower, and the cold accumulation tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger;

according to the cooling tower damage condition, control the cold-storage jar give condenser in the cooling water set dispels the heat, perhaps, control the cold-storage jar with the cooling tower cooperation is given the condenser dispels the heat, include:

If the fan and the filler in the cooling tower are damaged, controlling the water in the cold accumulation tank to exchange heat with the cooling water in the condenser through the heat exchanger so as to radiate the heat of the condenser;

and if only the fan in the cooling tower is damaged, controlling the cold accumulation tank to be matched with the cooling tower to radiate heat for the condenser.

Optionally, controlling the heat exchange between the water in the cold storage tank and the cooling water in the condenser through the heat exchanger includes:

starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and closing the cooling tower and a water supply and return valve thereof;

monitoring the return water temperature of the condenser;

and according to the backwater temperature of the condenser, adjusting the water flow entering the heat exchanger from the cold accumulation tank so that the backwater temperature of the condenser is equal to a second preset temperature.

Optionally, according to the return water temperature of the condenser, adjusting the water flow rate of the cold storage tank entering the heat exchanger, including:

if the return water temperature of the condenser is higher than the second preset temperature, all valves except a heat exchanger water inlet valve in a connecting pipeline between the cold accumulation tank and the heat exchanger are adjusted to the maximum opening, the heat exchanger water inlet valve and a heat exchanger water outlet valve in the connecting pipeline between the heat exchanger and the condenser are adjusted to the maximum opening, and the water flow entering the heat exchanger from the cold accumulation tank is increased by adjusting the opening of the heat exchanger water inlet valve in the connecting pipeline between the cold accumulation tank and the heat exchanger;

And if the return water temperature of the condenser is smaller than the second preset temperature, regulating all valves except a heat exchanger water inlet valve in a valve on a connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, regulating a heat exchanger water inlet valve and a heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser to the maximum opening, and reducing the water flow entering the heat exchanger from the cold storage tank by regulating the opening of the heat exchanger water inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger.

Optionally, controlling the cold storage tank and the cooling tower to cooperate with the condenser to dissipate heat includes:

starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and starting the cooling tower and a water supply and return valve thereof;

monitoring the return water temperature of the condenser;

and according to the backwater temperature of the condenser, adjusting the water flow entering the cooling tower from the condenser so that the backwater temperature of the condenser is equal to a second preset temperature.

Optionally, adjusting the water flow rate from the condenser into the cooling tower according to the return water temperature of the condenser, including:

If the backwater temperature of the condenser is higher than the second preset temperature, adjusting all valves on a connecting pipeline between the cold accumulation tank and the heat exchanger to the maximum opening degree, and adjusting the opening degree of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser from the maximum opening degree to be smaller so that the backwater temperature of the condenser is equal to the second preset temperature;

if the backwater temperature of the condenser is smaller than the second preset temperature, closing a heat exchanger water inlet valve and a heat exchanger water outlet valve on a connecting pipeline between the heat exchanger and the condenser, and if the backwater temperature of the condenser is still smaller than the second preset temperature, then opening the water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser is increased from the minimum, so that the backwater temperature of the condenser is equal to the second preset temperature.

Optionally, after the opening degree of the water supply valve on the first water supply pipe for supplying water to the cooling tower from the condenser is reduced from the maximum, the method further comprises:

and if the opening of the water supply valve on the first water supply pipeline for supplying water to the cooling tower from the condenser reaches the minimum opening and the backwater temperature of the condenser is still higher than the second preset temperature, the opening of the heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from the minimum, so that the backwater temperature of the condenser is equal to the second preset temperature.

Optionally, a second water supply pipeline and a second water return pipeline are connected between the tail end device and the evaporator in the water chilling unit, the first port of the cold accumulation tank is connected to the second water supply pipeline through a first pipeline, the second port of the cold accumulation tank is connected to the second water return pipeline through a second pipeline, and the first pipeline and the second pipeline are both provided with valves;

the method further comprises the steps of:

when the load of the water chilling unit is detected to be lower than a preset threshold value and the water temperature of the cold accumulation tank is detected to be higher than a third preset temperature, all valves on the first pipeline and the second pipeline are opened, so that the evaporator performs cold accumulation on the cold accumulation tank;

and when the water temperature of the cold accumulation tank is equal to the third preset temperature, finishing cold accumulation.

Optionally, the second port of the cold accumulation tank is further connected to the second water return pipeline through a third pipeline, and the third pipeline is provided with a valve;

controlling the cold accumulation tank to supply cold to the end device, comprising:

and starting a chilled water pump, and starting valves on the first pipeline and the third pipeline so that the cold accumulation tank supplies cold to the terminal equipment through the first pipeline and the third pipeline.

The embodiment of the invention also provides a cooling control device, which comprises:

the detection module is used for detecting that the cooling tower is damaged or the system enters an emergency cooling mode;

the first control module is used for controlling the cold accumulation tank to supply cold to the terminal equipment;

and the second control module is used for starting the water chilling unit when the water temperature of the cold accumulation tank reaches a first preset temperature, and controlling the cold accumulation tank to radiate heat to a condenser in the water chilling unit according to the damage condition of the cooling tower, or controlling the cold accumulation tank to be matched with the cooling tower to radiate heat to the condenser so as to enable the water chilling unit to supply cold to the tail-end equipment.

The embodiment of the invention also provides a cooling system, which comprises: the cold supply control device comprises terminal equipment, a water chilling unit, a cooling tower, a cold storage tank and the cold supply control device.

The embodiment of the invention also provides computer equipment, which comprises: memory, a processor and a computer program stored on the memory and executable on the processor, which processor implements the steps of the method according to the embodiments of the invention when the computer program is executed.

The embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of the embodiments of the present invention.

By applying the technical scheme of the invention, when the cooling tower is damaged or the system enters an emergency cooling mode, the cold storage tank is firstly applied to the freezing side, the water chilling unit is closed, the cold storage tank supplies cold to the tail end equipment to realize emergency cold supply of the freezing side, when the water temperature of the cold storage tank rises to a first preset temperature, the tail end cannot be effectively radiated through direct cold supply of the cold storage tank, at the moment, the cold storage tank is applied to the cooling side, the water chilling unit is started, and the cold storage tank and the cooling tower are controlled to radiate heat to the condenser in the water chilling unit according to the damage condition of the cooling tower to realize emergency heat radiation of the cooling side so as to supply cold to the tail end equipment by the water chilling unit. Through carrying out energy multistage utilization to the cold water in the cold-storage tank, still can guarantee the normal operating of cooling water set for a certain time under the circumstances that the cooling tower damages or the system gets into emergency cooling mode, avoid the cooling water set to appear the problem of high temperature shut down protection, guarantee the incessant safe operation of whole cooling system longer time, provide enough long time for cooling tower maintenance, system recovery, provide the guarantee for the safe operation of whole cooling system, and comparatively energy-conserving, promote energy-conservation and the safety of whole system, solved the cooling tower damage and lead to the unable normal operating problem of cooling water set.

Drawings

Fig. 1 is a flowchart of a cooling control method according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a cooling system according to a second embodiment of the present invention;

fig. 3 is a block diagram of a cooling control device according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that the terms "first," "second," and the like in the description and the claims and drawings of the present invention are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.

Alternative embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

The embodiment provides a cold supply control method, which is suitable for a cold water supply system, and can still ensure the normal operation of a water chilling unit under the condition that a cooling tower is damaged, thereby ensuring the cold supply of terminal equipment.

Fig. 1 is a flowchart of a cooling control method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:

s101, detecting damage to the cooling tower or entering an emergency cooling mode.

S102, controlling the cold accumulation tank to supply cold to the terminal equipment.

And S103, when the water temperature of the cold accumulation tank is raised to a first preset temperature, starting the water chilling unit, and controlling the cold accumulation tank to radiate heat to a condenser in the water chilling unit according to the damage condition of the cooling tower, or controlling the cold accumulation tank and the cooling tower to cooperate to radiate heat to the condenser so as to enable the water chilling unit to supply cold to terminal equipment.

The cold storage device comprises a cold storage tank, a cold water machine set, a cold storage tank, a water temperature control device and a water temperature control device, wherein chilled water provided by an evaporator in the cold water machine set can be used as cold storage for the cold storage tank when the cold water machine set runs, and the water temperature in the cold storage tank is the target chilled water supply temperature of the evaporator after cold storage is finished. The first preset temperature may be set according to actual conditions, for example, the first preset temperature may be set as a target chilled water return temperature of the evaporator. The target chilled water return temperature of the evaporator is higher than the target chilled water supply temperature of the evaporator.

The cooling tower is damaged due to the influence of typhoons and the like, and the damage condition of the cooling tower can reflect whether the cooling tower can exchange heat or not, for example, if the packing in the cooling tower and the fan are damaged, the cooling tower cannot exchange heat; if the packing in the cooling tower is undamaged but the fan is damaged, the cooling tower can exchange heat, and the heat exchange effect is poor. If the cooling tower can not exchange heat, the cold accumulation tank is applied to the cooling side to dissipate heat of the condenser. If the cooling tower can exchange heat, the cooling tower can participate in the operation of the water chilling unit, the cold accumulation tank is applied to the cooling side, and the cold accumulation tank is matched with the cooling tower to radiate heat for the condenser.

The present embodiment may automatically perform the related control after detecting the damage of the cooling tower, or may perform the related control after receiving an instruction to enter the emergency cooling mode, which is generally issued when the cooling tower is damaged or repaired.

According to the embodiment, under the condition that the cooling tower is damaged or the system enters an emergency cooling mode, the cold storage tank is firstly applied to the freezing side, the water chilling unit is closed, the cold storage tank supplies cold to terminal equipment to realize emergency cold supply of the freezing side, when the water temperature of the cold storage tank rises to a first preset temperature, the terminal cannot be effectively cooled through direct cold supply of the cold storage tank, the cold storage tank is applied to the cooling side at the moment, the water chilling unit is started, the cold storage tank and the cooling tower are controlled to cool a condenser in the water chilling unit according to the damage condition of the cooling tower, and the emergency heat dissipation of the cooling side is realized to supply cold to the terminal equipment by the water chilling unit. Through carrying out energy multistage utilization to the cold water in the cold-storage tank, still can guarantee the normal operating of cooling water set for a certain time under the circumstances that the cooling tower damages or the system gets into emergency cooling mode, avoid the cooling water set to appear the problem of high temperature shut down protection, guarantee the incessant safe operation of whole cooling system longer time, provide enough long time for cooling tower maintenance, system recovery, provide the guarantee for the safe operation of whole cooling system, and comparatively energy-conserving, promote energy-conservation and the safety of whole system, solved the cooling tower damage and lead to the unable normal operating problem of cooling water set.

In one embodiment, a first water supply line and a first water return line are connected between the condenser and the cooling tower, and the cold storage tank is connected to the first water supply line and the first water return line through a heat exchanger. The water supply means that the cooling water flows from the condenser to the cooling tower, and the backwater means that the cooling water flows from the cooling tower to the condenser. Specifically, according to the damage condition of the cooling tower, the cold storage tank is controlled to radiate heat for a condenser in the water chilling unit, or the cold storage tank and the cooling tower are controlled to cooperate to radiate heat for the condenser, and the method comprises the following steps: if the fan and the filler in the cooling tower are damaged, controlling the water in the cold accumulation tank to exchange heat with the cooling water in the condenser through the heat exchanger so as to radiate the heat of the condenser; if only the fan in the cooling tower is damaged, the cold accumulation tank and the cooling tower are controlled to be matched for cooling the condenser.

In this embodiment, the heat transfer is carried out through the water in heat exchanger and the condenser to the cold-storage tank, to the different damage condition of cooling tower, the cold-storage tank can dispel the heat to the condenser alone or with the cooling tower cooperation to the condenser heat dissipation, ensures the normal operating of cooling side of cooling water set under the cooling tower damage condition, avoids the high Wen Tingji protection of cooling water set.

Specifically, the heat exchange between the water in the cold accumulation tank and the cooling water in the condenser is controlled by the heat exchanger, and the method comprises the following steps: starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and closing the cooling tower and a water supply and return valve thereof; monitoring the return water temperature of the condenser (the actual temperature detected by the temperature sensor); and according to the backwater temperature of the condenser, adjusting the water flow entering the heat exchanger from the cold accumulation tank so that the backwater temperature of the condenser is equal to the second preset temperature.

The second preset temperature may be set according to an actual situation, where the second preset temperature is greater than the first preset temperature, for example, the second preset temperature may be set as a target cooling water return temperature of the condenser. The target cooling water backwater temperature of the condenser is lower than the target cooling water supply temperature of the condenser.

The pipeline between this embodiment control cold-storage jar, heat exchanger and the condenser switches on, makes the cold-storage jar apply to the cooling side in order to dispel the heat for the condenser alone to guarantee through control discharge water flow that the return water temperature of condenser satisfies the requirement, and then guarantee the normal operating of cooling water set.

Further, according to the return water temperature of the condenser, adjust the discharge of water from the cold storage tank into the heat exchanger, include:

if the return water temperature of the condenser is higher than the second preset temperature, all valves except the heat exchanger water inlet valve in the valves on the connecting pipeline between the cold accumulation tank and the heat exchanger are adjusted to the maximum opening, the heat exchanger water inlet valve and the heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser are adjusted to the maximum opening, and the water flow entering the heat exchanger from the cold accumulation tank is increased by adjusting the opening of the heat exchanger water inlet valve on the connecting pipeline between the cold accumulation tank and the heat exchanger;

if the return water temperature of the condenser is smaller than the second preset temperature, all valves except the heat exchanger water inlet valve in the valves on the connecting pipeline between the cold accumulation tank and the heat exchanger are adjusted to the maximum opening, the heat exchanger water inlet valve and the heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser are adjusted to the maximum opening, and the water flow entering the heat exchanger from the cold accumulation tank is reduced by adjusting the opening of the heat exchanger water inlet valve on the connecting pipeline between the cold accumulation tank and the heat exchanger.

According to the embodiment, the water flow entering the heat exchanger from the cold accumulation tank is controlled through the adjusting valve, so that the return water temperature of the condenser is equal to the second preset temperature, and the normal operation of the cooling unit is ensured.

Specifically, control cold-storage jar and cooling tower cooperation are given the condenser heat dissipation, include: starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and starting the cooling tower and a water supply and return valve thereof; monitoring the return water temperature of the condenser (the actual temperature detected by the temperature sensor); and according to the backwater temperature of the condenser, adjusting the water flow entering the cooling tower from the condenser so that the backwater temperature of the condenser is equal to the second preset temperature.

According to the embodiment, the cold accumulation tank, the heat exchanger and the condenser are controlled to be conducted through the pipelines, the cooling tower is started, the cold accumulation tank is applied to the cooling side to be matched with the cooling tower to radiate heat for the condenser, the water flow is controlled to ensure that the return water temperature of the condenser meets the requirement, and then the normal operation of the water chilling unit is ensured.

Further, according to the return water temperature of the condenser, adjusting the water flow rate from the condenser into the cooling tower, comprising:

if the backwater temperature of the condenser is higher than the second preset temperature, regulating all valves on a connecting pipeline between the cold accumulation tank and the heat exchanger to the maximum opening degree, and regulating the opening degree of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser to be smaller from the maximum opening degree so that the backwater temperature of the condenser is equal to the second preset temperature;

If the backwater temperature of the condenser is less than the second preset temperature, closing a heat exchanger water inlet valve and a heat exchanger water outlet valve on a connecting pipeline between the heat exchanger and the condenser, and then if the backwater temperature of the condenser is still less than the second preset temperature, adjusting the opening of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser from the minimum to ensure that the backwater temperature of the condenser is equal to the second preset temperature.

According to the embodiment, the water flow entering the cooling tower from the condenser is controlled by adjusting the related valve, so that the return water temperature of the condenser is equal to the second preset temperature, and the normal operation of the cooling unit is ensured.

Further, after decreasing the opening of the water supply valve on the first water supply line for supplying water from the condenser to the cooling tower from the maximum, the cooling device further includes:

if the opening of the water supply valve on the first water supply pipeline for supplying water to the cooling tower by the condenser reaches the minimum opening and the backwater temperature of the condenser is still higher than the second preset temperature, the opening of the heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from the minimum so that the backwater temperature of the condenser is equal to the second preset temperature.

According to the embodiment, under the condition that the water supply valve on the first water supply pipeline for supplying water to the cooling tower through the condenser cannot be successfully regulated, the water outlet valve of the heat exchanger on the connecting pipeline between the heat exchanger and the condenser is further regulated, so that the return water temperature of the condenser meets the requirement, and the control is simple and effective.

When the end load is low (for example, the number of the opened cabinets in the data machine room is small), the water chilling unit is started to be frequently started and stopped, and the load can be increased through the online cold accumulation process of the cold accumulation tank, so that the problem that the water chilling unit is frequently started and stopped when the end load is low is solved.

Specifically, be connected with second supply line and second return line between the evaporimeter in terminal equipment and the cooling water set, the first port of cold-storage jar is connected to the second supply line through first pipeline, and the second port of cold-storage jar is connected to the second return line through the second pipeline, and first pipeline and second pipeline all are provided with the valve. The water supply here means that chilled water flows from the evaporator to the end device, and the return water means that chilled water flows from the end device back to the evaporator.

The method further comprises the following steps: when the load of the water chilling unit is detected to be lower than a preset threshold value and the water temperature of the cold accumulation tank is detected to be higher than a third preset temperature, all valves on the first pipeline and the second pipeline are opened, so that the evaporator stores cold to the cold accumulation tank; and when the water temperature of the cold accumulation tank is equal to the third preset temperature, finishing cold accumulation.

The preset threshold is used for judging whether the water chilling unit is in low load or not, and can be specifically judged through the temperature difference of the water chilling unit, for example, the temperature difference of the water chilling unit is smaller than the preset threshold, which means that the required cold quantity at the tail end is small, and the current water chilling unit is in low load operation. The third preset temperature may be set according to actual conditions, for example, the third preset temperature may be set as a target chilled water supply temperature of the evaporator.

According to the embodiment, the end load is increased by utilizing online cold accumulation of the cold accumulation tank, the adaptability of the system to external load change is improved, the impact of load change on the water chilling unit is weakened, the water chilling unit is enabled to operate in a relatively efficient section, the problem that the water chilling unit is frequently started and stopped when the end load is low is solved, and the energy conservation of the whole system is promoted.

In one embodiment, the second port of the cold storage tank is further connected to a second water return line via a third line, the third line being provided with a valve. Controlling the cold accumulation tank to supply cold to the end device, comprising: and opening the chilled water pump, and opening valves on the first pipeline and the third pipeline to enable the cold accumulation tank to supply cold to the terminal equipment through the first pipeline and the third pipeline. That is, the cold storage tank supplies cold to the terminal equipment through the first pipe and chilled water flows back to the cold storage tank through the third pipe. In this embodiment, the cold storage tank can be cooled by controlling the valve to supply the cold storage tank to the terminal equipment.

Under the condition that the cooling tower is not damaged, the cold accumulation tank and the water chilling unit can be controlled to supply cold to the tail end equipment.

The number of valves installed on each connection pipe may be set according to actual requirements, which is not limited in this embodiment.

Example two

The above-described cooling control method is described below with reference to a specific embodiment, however, it should be noted that the specific embodiment is only for better explaining the present application, and is not meant to be a undue limitation on the present application. The same or corresponding terms as those of the above embodiments are explained, and the present embodiment will not be repeated.

As shown in fig. 2, a schematic diagram of a cooling system includes: terminal equipment 1, chilled water pump 2, cooling water set 3, cooling water pump 4, cooling tower 5, cold-storage tank 6, cooling water pump 7 and plate heat exchanger 8. V1-V18 are valves, and may be electric proportional control valves (hereinafter referred to as water valves). T1 to T7 are temperature sensors.

According to the emergency cooling control method for the cold accumulation tank, the control under different modes is realized through the cold accumulation tank, the plate heat exchanger, the corresponding electric regulation proportional valve and the temperature sensor, so that the energy conservation and the safety of the whole system are promoted; the cold energy stored in the cold storage tank can be applied to emergency use of a cooling side, and guarantees are provided for safe operation of the system. The modes are described below.

(1) Online cold accumulation mode of cold accumulation tank

When the number of the running cabinets in the data machine room is small, the system is in a low-load state, at the moment, the tail end equipment 1 is started, the chilled water pump 2 is started, the water chilling unit 3 is started, the cooling water pump 4 is started, the cooling tower 5 is started, the water valves V1-V7, V9-V10 and V16-V18 are all opened, and the other equipment (the chilled water pump 7 and the plate heat exchanger) and the water valves V8 and V11-V15 are all closed.

The 18 ℃ cold water prepared by the evaporator in the water chiller 3 is divided into two paths after passing through water valves V4 and V3, one path enters the tail end equipment 1 for heat exchange through V1, the other path enters the cold accumulation tank 6 for cold charge through V6 and V9, and the two paths of water after the respective heat exchange return to the water chiller 3 through the chilled water pump 2 (specifically, one path returns to the water chiller 3 through V2 and V5, and the other path returns to the water chiller 3 through V10, V7 and V5). The cooling water in the condenser of the water chilling unit 3 enters the cooling tower 5 for heat exchange.

When the water temperature of the cold accumulation tank reaches 18 ℃, the cold accumulation is completed. If the water temperature of the cold accumulation tank is higher than 18 ℃, the cold accumulation tank can be subjected to cold accumulation.

(2) Online cold-storage tank cold-discharging mode

When the temperature sensors T6 and T7 in the cold accumulation tank show that the temperatures are 18 ℃, the cold accumulation is completed. Here, two temperature sensors are used for detecting the water temperature of the cold accumulation tank, so that accuracy can be ensured. Of course, only one temperature sensor may be used to detect the water temperature of the cold storage tank.

When the cold accumulation tank is required to cool, the tail end device 1 is started, the chilled water pump 2 is started, the water chilling unit 3 is started, the cooling water pump 4 is started, the cooling tower 5 is started, the water valves V1-V6, V8-V11 and V16-V18 are all opened, and the other devices (the cooling water pump 7 and the plate heat exchanger) and the water valves V7 and V12-V15 are all closed.

18 ℃ cold water prepared in an evaporator of the water chilling unit 3 and 18 ℃ cold water discharged from the cold storage tank 6 through water valves V9 and V6 are mixed and then uniformly supplied to the tail end equipment 1 for heat exchange, the water after heat exchange is discharged from the tail end equipment 1 and then is divided into two paths through the V2 and the chilled water pump 2, one path of the water returns to the water chilling unit 3 through the V5, and the other path of the water returns to the cold storage tank 6 through the V8, the V11 and the V10.

(3) Emergency cooling mode one of cold accumulation tank

On typhoon days, when the cooling tower shows that the fan and the packing are damaged and the packing needs to be replaced and the fan needs to be maintained, the cooling tower can not exchange heat, enters the first emergency cooling mode of the cold accumulation tank, and all heat of the condenser is exchanged through the cold accumulation tank and the plate heat exchanger.

Firstly, 18 ℃ water in the cold accumulation tank 6 is preferentially cooled to the tail end equipment 1, at the moment, the tail end equipment 1 is started, the chilled water pump 2 is started, the water valves V1, V2, V6 and V8-V11 are all opened, and the other water valves V3-V5, V7, V12-V18 and the equipment (the water chilling unit 3, the cooling water pump 4, the cooling tower 5, the cooling water pump 7 and the plate heat exchanger 8) are all closed.

Cold water in the cold storage tank 6 enters the tail end equipment 1 through the water valves V9, V6 and V1 to be cooled, the water subjected to heat exchange in the tail end equipment 1 is conveyed back to the cold storage tank 6 through the chilled water pump 2 through the water valves V8, V11 and V10, so that circulation is realized, when the temperatures of the temperature sensors T6, T7 and T2 are displayed at 23 ℃ (three temperature sensors are used here, the accuracy can be ensured, misoperation can be prevented, only the T2 temperature sensor can be used, when the temperature of the T2 is greater than or equal to 23 ℃ and lasts for the preset time T), the cold water machine set 3 is operated through switching the valves and the equipment, the cold water at 23 ℃ in the cold storage tank 6 is enabled to be applied to a cooling side, the normal opening of the cold water machine set 3 is ensured, and the phenomenon of high-temperature protection shutdown is avoided.

At this time, the terminal equipment 1 is started, the chilled water pump 2 is started, the water chilling unit 3 is started, the cooling water pump 4 is started, the cold water discharging pump 7 is started, the plate heat exchanger 8 is started, the water valves V1-V5, V9-V15 and V17 are all opened, and the other water valves V6-V8, V16 and V18 and the equipment (namely the cooling tower 5) are all closed.

Cold water at 18 ℃ prepared by an evaporator in the water chilling unit 3 enters the tail end equipment 1, and the water after heat exchange returns to the water chilling unit 3 through the chilled water pump 2. The high temperature water in the condenser enters the plate heat exchanger 8 through the water valve V14 to exchange heat with the water at 23 ℃ from the cold accumulation tank, and when the temperature sensors T4 and T3 show that the temperature is 32 ℃, the water after the heat exchange of the plate heat exchanger 8 returns to the condenser in the water chilling unit 3 through the cooling water pump 4. Specifically, whether the water after heat exchange by the plate heat exchanger 8 returns to the condenser or not can be controlled by opening and closing the water valve 17.

When the temperature sensors T3 and T4 show that the temperature is higher than 32 ℃, the opening degrees of the water valves V9, V10, V11, V13, V14 and V15 are maximum, the opening degree of the water valve V12 is regulated to enlarge the flow entering the plate heat exchanger 8, and the water temperatures of the temperature sensors T3 and T4 reach 32 ℃ and then return to the water chilling unit 3.

When the temperature sensors T3 and T4 show that the temperature is lower than 32 ℃, the opening degrees of the water valves V9, V10, V11, V13, V14 and V15 are maximum, the opening degree of the water valve V12 is regulated to reduce the flow entering the plate heat exchanger 8, and the water temperatures of the temperature sensors T3 and T4 reach 32 ℃ and then return to the water chilling unit 3.

(4) Emergency cooling mode II of cold accumulation tank

When the cooling tower shows that the fan is damaged and the fan needs to be replaced or maintained, the cooling tower can exchange heat through the filler, and the heat exchange effect is poor. Under the condition, the emergency cooling mode II of the cold accumulation tank is entered, a part of heat of the condenser is naturally dissipated through the filler of the cooling tower, and the other heat is taken away through the cold accumulation tank and the plate heat exchanger, so that the emergency cooling time of the whole data center can be prolonged, and more margin time is provided for the data center to process faults or backup data.

Firstly, similar to the first emergency cooling mode of the cold storage tank, 18 ℃ cold water in the cold storage tank 6 is firstly cooled to the tail end device 1, when the temperatures of the temperature sensors T6, T7 and T2 are 23 ℃, the cold water unit 3 is operated by switching the valves and the devices, so that the 23 ℃ cold water in the cold storage tank 6 is applied to a cooling side, the normal opening of the cold water unit 3 is ensured, and the phenomenon of high-temperature protection shutdown is avoided.

At this time, the terminal equipment 1 is started, the chilled water pump 2 is started, the water chilling unit 3 is started, the cooling water pump 4 is started, the cooling tower 5 is started, the cooling water pump 7 is started, the plate heat exchanger 8 is started, the water valves V1-V5 and V9-V18 are all opened, and the other water valves V6-V8 are all closed.

Cold water at 18 ℃ prepared by an evaporator in the water chiller 3 enters the tail end equipment 1, and the water after heat exchange becomes 23 ℃ and returns to the water chiller 3 through the chilled water pump 2. One path of high-temperature water in the condenser enters the plate heat exchanger 8 through the water valve V14 to exchange heat with the water at 23 ℃ from the cold accumulation tank 6, the other path of high-temperature water enters the cooling tower 5 through the water valve V16 to exchange heat by using the filler, and when the temperature sensor T3 shows that the temperature is 32 ℃, the water after heat exchange returns to the condenser in the water chilling unit 3 through the cooling water pump 4.

When the temperature sensor T3 displays that the temperature is higher than 32 ℃, the opening degrees of the water valves V9-V13 reach the maximum, the opening degrees of the water valves V16 and V18 are kept in linkage, and the opening degrees of the water valves V14 and V15 are also kept in linkage; the opening of the water valve V16 is reduced from the maximum (the minimum opening is set to 50%) to reduce the flow rate into the cooling tower, and heat exchange of the plate heat exchanger 8 is enhanced, thereby ensuring that the temperature of the temperature sensor T3 reaches 32 ℃.

If the opening of the water valve V16 reaches the minimum opening (50%), and the temperature sensor T3 displays that the temperature is still greater than 32 ℃, the opening of the water valve V15 is increased from the minimum, so that the water passing through the water valve V18 and the water passing through the water valve V15 are mixed, and the water temperature of the temperature sensor T3 reaches 32 ℃ and then returns to the water chiller 3.

When the temperature sensor T3 displays that the temperature is lower than 32 ℃, the opening degrees of the water valves V16 and V18 are kept in linkage, and the opening degrees of the water valves V14 and V15 are also kept in linkage; first, the water valves V14 and V15 are closed, the display temperature of the temperature sensor T3 is checked, and if the display temperature is still lower than 32 ℃, the opening of the water valve V16 is increased from the minimum (the minimum opening is set to 50%), so as to ensure that the temperature of the temperature sensor T3 is equal to 32 ℃.

In the embodiment, when the cooling tower is damaged due to certain unreliability factors, the low-temperature cold water in the cold storage tank is utilized in multiple stages and is preferentially supplied to terminal equipment for cooling; when the temperature of water in the cold storage tank rises to a certain temperature (such as more than or equal to 23 ℃), a water chilling unit is started, cold water at 23 ℃ in the cold storage tank is supplied to the cooling side, the cold water in the cold storage tank exchanges heat with high temperature water in the condenser through plate exchange, the cooling backwater temperature of the water chilling unit is ensured to meet 32 ℃, the normal operation of the cooling side of the water chilling unit under the condition that the cooling tower is damaged is ensured, and the high-temperature shutdown protection problem of the water chilling unit is avoided. When the water chilling unit needs to be overhauled, the low-temperature cold water in the cold accumulation tank is firstly applied to the freezing side terminal equipment for emergency cooling; when the temperature of the water in the cold storage tank rises to a certain temperature, the cold storage tank is applied to the cooling side, a cold supply object is changed, the original cooling of the tail end equipment is changed into the emergency heat dissipation of the condenser, the energy multi-stage utilization is fully carried out, and the normal use of the water chilling unit is ensured. Moreover, the online cold accumulation process of the cold accumulation tank is utilized, so that the load can be increased, the problem that the cold water unit is frequently started and stopped when the tail end is low in load is solved, the adaptability of the system to external load change is improved, the impact of load change on the cold water unit is weakened, the cold water unit is ensured to operate in a high-efficiency interval, and the energy conservation of the whole system is ensured.

Example III

Based on the same inventive concept, the present embodiment provides a cooling control device, which may be used to implement the cooling control method described in the foregoing embodiments. The apparatus may be implemented in software and/or hardware.

Fig. 3 is a block diagram of a cooling control device according to a third embodiment of the present invention, and as shown in fig. 3, the device includes:

a detection module 31 for detecting a cooling tower failure or a system entering an emergency cooling mode;

a first control module 32 for controlling the cold storage tank to supply cold to the end device;

and the second control module 33 is configured to start the water chiller when the water temperature of the cold storage tank reaches a first preset temperature, and control the cold storage tank to dissipate heat from a condenser in the water chiller according to a damage condition of the cooling tower, or control the cold storage tank and the cooling tower to cooperate to dissipate heat from the condenser, so that the water chiller supplies cold to the terminal device.

Optionally, a first water supply pipeline and a first water return pipeline are connected between the condenser and the cooling tower, and the cold accumulation tank is connected to the first water supply pipeline and the first water return pipeline through a heat exchanger;

the second control module 33 includes:

The first control unit is used for controlling the water in the cold accumulation tank to exchange heat with the cooling water in the condenser through the heat exchanger so as to radiate the heat of the condenser if the fan and the filler in the cooling tower are damaged;

and the second control unit is used for controlling the cold accumulation tank and the cooling tower to be matched with the condenser for radiating if only the fan in the cooling tower is damaged.

Optionally, the first control unit includes:

the first control subunit is used for opening the water pump and the valve on the connecting pipeline between the cold accumulation tank and the heat exchanger, opening the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and closing the cooling tower and the water supply and return valve thereof;

the first monitoring subunit is used for monitoring the backwater temperature of the condenser;

the first regulating subunit is used for regulating the water flow entering the heat exchanger from the cold accumulation tank according to the backwater temperature of the condenser so as to enable the backwater temperature of the condenser to be equal to a second preset temperature.

Optionally, the first adjusting subunit is specifically configured to:

if the return water temperature of the condenser is higher than the second preset temperature, all valves except a heat exchanger water inlet valve in a connecting pipeline between the cold accumulation tank and the heat exchanger are adjusted to the maximum opening, the heat exchanger water inlet valve and a heat exchanger water outlet valve in the connecting pipeline between the heat exchanger and the condenser are adjusted to the maximum opening, and the water flow entering the heat exchanger from the cold accumulation tank is increased by adjusting the opening of the heat exchanger water inlet valve in the connecting pipeline between the cold accumulation tank and the heat exchanger;

And if the return water temperature of the condenser is smaller than the second preset temperature, regulating all valves except a heat exchanger water inlet valve in a valve on a connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, regulating a heat exchanger water inlet valve and a heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser to the maximum opening, and reducing the water flow entering the heat exchanger from the cold storage tank by regulating the opening of the heat exchanger water inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger.

Optionally, the second control unit includes:

the second control subunit is used for opening the water pump and the valve on the connecting pipeline between the cold accumulation tank and the heat exchanger, opening the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser and opening the cooling tower and the water supply and return valve thereof;

the second monitoring subunit is used for monitoring the backwater temperature of the condenser;

and the second regulating subunit is used for regulating the water flow entering the cooling tower from the condenser according to the backwater temperature of the condenser so as to ensure that the backwater temperature of the condenser is equal to a second preset temperature.

Optionally, the second adjusting subunit is specifically configured to:

if the backwater temperature of the condenser is higher than the second preset temperature, adjusting all valves on a connecting pipeline between the cold accumulation tank and the heat exchanger to the maximum opening degree, and adjusting the opening degree of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser from the maximum opening degree to be smaller so that the backwater temperature of the condenser is equal to the second preset temperature;

if the backwater temperature of the condenser is smaller than the second preset temperature, closing a heat exchanger water inlet valve and a heat exchanger water outlet valve on a connecting pipeline between the heat exchanger and the condenser, and if the backwater temperature of the condenser is still smaller than the second preset temperature, then opening the water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser is increased from the minimum, so that the backwater temperature of the condenser is equal to the second preset temperature.

Optionally, the second adjusting subunit is further configured to:

and after the opening degree of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser is reduced from the maximum, if the opening degree of the water supply valve on the first water supply pipeline for supplying water to the cooling tower from the condenser reaches the minimum opening degree and the return water temperature of the condenser is still higher than a second preset temperature, the opening degree of a heat exchanger water outlet valve on a connecting pipeline between the heat exchanger and the condenser is increased from the minimum opening degree so that the return water temperature of the condenser is equal to the second preset temperature.

Optionally, a second water supply pipeline and a second water return pipeline are connected between the tail end device and the evaporator in the water chilling unit, the first port of the cold accumulation tank is connected to the second water supply pipeline through a first pipeline, the second port of the cold accumulation tank is connected to the second water return pipeline through a second pipeline, and the first pipeline and the second pipeline are both provided with valves;

the apparatus further comprises:

the cold accumulation module is used for opening all valves on the first pipeline and the second pipeline when the load of the water chilling unit is detected to be lower than a preset threshold value and the water temperature of the cold accumulation tank is higher than a third preset temperature, so that the evaporator can accumulate cold to the cold accumulation tank; and when the water temperature of the cold accumulation tank is equal to the third preset temperature, finishing cold accumulation.

Optionally, the second port of the cold accumulation tank is further connected to the second water return pipeline through a third pipeline, and the third pipeline is provided with a valve;

the first control module is specifically configured to: and starting a chilled water pump, and starting valves on the first pipeline and the third pipeline so that the cold accumulation tank supplies cold to the terminal equipment through the first pipeline and the third pipeline.

The device can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment may be referred to the method provided in the embodiment of the present invention.

Example IV

The present embodiment provides a cooling system, including: the cooling control device according to the above embodiment includes a terminal device, a chiller, a cooling tower, a cold storage tank, and a cooling control device.

Example five

The present embodiment provides a computer device including: a memory, a processor and a computer program stored on the memory and executable on the processor, which processor implements the steps of the method described in the above embodiments when it executes the computer program.

Example six

The present embodiment provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method described in the above embodiments.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (13)

1. A cooling control method, characterized by comprising:

detecting a cooling tower failure or the system entering an emergency cooling mode;

controlling the cold accumulation tank to supply cold to the terminal equipment;

when the temperature of the cold accumulation tank is raised to a first preset temperature, a water chilling unit is started, and the cold accumulation tank is controlled to radiate heat to a condenser in the water chilling unit according to the damage condition of a cooling tower, or the cold accumulation tank and the cooling tower are controlled to cooperate to radiate heat to the condenser, so that the water chilling unit supplies cold to terminal equipment.

2. The method according to claim 1, wherein a first water supply line and a first water return line are connected between the condenser and the cooling tower, and the cold storage tank is connected to the first water supply line and the first water return line through a heat exchanger;

according to the cooling tower damage condition, control the cold-storage jar give condenser in the cooling water set dispels the heat, perhaps, control the cold-storage jar with the cooling tower cooperation is given the condenser dispels the heat, include:

if the fan and the filler in the cooling tower are damaged, controlling the water in the cold accumulation tank to exchange heat with the cooling water in the condenser through the heat exchanger so as to radiate the heat of the condenser;

And if only the fan in the cooling tower is damaged, controlling the cold accumulation tank to be matched with the cooling tower to radiate heat for the condenser.

3. The method of claim 2, wherein controlling heat exchange of water in the cold storage tank with cooling water in the condenser through the heat exchanger comprises:

starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and closing the cooling tower and a water supply and return valve thereof;

monitoring the return water temperature of the condenser;

and according to the backwater temperature of the condenser, adjusting the water flow entering the heat exchanger from the cold accumulation tank so that the backwater temperature of the condenser is equal to a second preset temperature.

4. A method according to claim 3, wherein adjusting the flow of water from the cold storage tank into the heat exchanger in accordance with the return water temperature of the condenser comprises:

if the return water temperature of the condenser is higher than the second preset temperature, all valves except a heat exchanger water inlet valve in a connecting pipeline between the cold accumulation tank and the heat exchanger are adjusted to the maximum opening, the heat exchanger water inlet valve and a heat exchanger water outlet valve in the connecting pipeline between the heat exchanger and the condenser are adjusted to the maximum opening, and the water flow entering the heat exchanger from the cold accumulation tank is increased by adjusting the opening of the heat exchanger water inlet valve in the connecting pipeline between the cold accumulation tank and the heat exchanger;

And if the return water temperature of the condenser is smaller than the second preset temperature, regulating all valves except a heat exchanger water inlet valve in a valve on a connecting pipeline between the cold storage tank and the heat exchanger to the maximum opening, regulating a heat exchanger water inlet valve and a heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser to the maximum opening, and reducing the water flow entering the heat exchanger from the cold storage tank by regulating the opening of the heat exchanger water inlet valve on the connecting pipeline between the cold storage tank and the heat exchanger.

5. The method of claim 2, wherein controlling the cold storage tank to cooperate with the cooling tower to dissipate heat from the condenser comprises:

starting a water pump and a valve on a connecting pipeline between the cold accumulation tank and the heat exchanger, starting the water pump and the valve on the connecting pipeline between the heat exchanger and the condenser, and starting the cooling tower and a water supply and return valve thereof;

monitoring the return water temperature of the condenser;

and according to the backwater temperature of the condenser, adjusting the water flow entering the cooling tower from the condenser so that the backwater temperature of the condenser is equal to a second preset temperature.

6. The method of claim 5, wherein adjusting the flow of water from the condenser into the cooling tower based on the return water temperature of the condenser comprises:

if the backwater temperature of the condenser is higher than the second preset temperature, adjusting all valves on a connecting pipeline between the cold accumulation tank and the heat exchanger to the maximum opening degree, and adjusting the opening degree of a water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser from the maximum opening degree to be smaller so that the backwater temperature of the condenser is equal to the second preset temperature;

if the backwater temperature of the condenser is smaller than the second preset temperature, closing a heat exchanger water inlet valve and a heat exchanger water outlet valve on a connecting pipeline between the heat exchanger and the condenser, and if the backwater temperature of the condenser is still smaller than the second preset temperature, then opening the water supply valve on a first water supply pipeline for supplying water to the cooling tower from the condenser is increased from the minimum, so that the backwater temperature of the condenser is equal to the second preset temperature.

7. The method according to claim 6, further comprising, after decreasing an opening of a water supply valve on a first water supply line from the condenser to the cooling tower from a maximum, the step of:

And if the opening of the water supply valve on the first water supply pipeline for supplying water to the cooling tower from the condenser reaches the minimum opening and the backwater temperature of the condenser is still higher than the second preset temperature, the opening of the heat exchanger water outlet valve on the connecting pipeline between the heat exchanger and the condenser is increased from the minimum, so that the backwater temperature of the condenser is equal to the second preset temperature.

8. The method according to any one of claims 1 to 7, characterized in that a second water supply line and a second water return line are connected between the end device and an evaporator in the water chiller, the first port of the cold storage tank being connected to the second water supply line by a first line, the second port of the cold storage tank being connected to the second water return line by a second line, the first line and the second line each being provided with a valve;

the method further comprises the steps of:

when the load of the water chilling unit is detected to be lower than a preset threshold value and the water temperature of the cold accumulation tank is detected to be higher than a third preset temperature, all valves on the first pipeline and the second pipeline are opened, so that the evaporator performs cold accumulation on the cold accumulation tank;

and when the water temperature of the cold accumulation tank is equal to the third preset temperature, finishing cold accumulation.

9. The method according to claim 8, characterized in that the second port of the cold storage tank is also connected to the second return line by a third line, which third line is provided with a valve;

controlling the cold accumulation tank to supply cold to the end device, comprising:

and starting a chilled water pump, and starting valves on the first pipeline and the third pipeline so that the cold accumulation tank supplies cold to the terminal equipment through the first pipeline and the third pipeline.

10. A cooling control device, comprising:

the detection module is used for detecting that the cooling tower is damaged or the system enters an emergency cooling mode;

the first control module is used for controlling the cold accumulation tank to supply cold to the terminal equipment;

and the second control module is used for starting the water chilling unit when the water temperature of the cold accumulation tank reaches a first preset temperature, and controlling the cold accumulation tank to radiate heat to a condenser in the water chilling unit according to the damage condition of the cooling tower, or controlling the cold accumulation tank to be matched with the cooling tower to radiate heat to the condenser so as to enable the water chilling unit to supply cold to the tail-end equipment.

11. A cooling system, comprising: an end device, a chiller, a cooling tower, a cold storage tank, and the cooling control apparatus according to claim 10.

12. A computer device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1 to 9 when the computer program is executed by the processor.

13. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any of claims 1 to 9.