A valley power storage control system and method for central air conditioning

Abstract

The present invention provides a valley power storage control system for a central air conditioner, comprising a water storage tank and a freezer, wherein a first drain pipe is connected to a bottom of one side of the water storage tank, a plurality of branch pipes are connected to the second drain pipe, the plurality of branch pipes pass through the interior of the freezer, one end of the branch pipe is connected to the second drain pipe through a connecting pipe, a surface cooler is installed on the second drain pipe; and a control module is also included, the control module is electrically connected to a data processing module, the data processing module is electrically connected to a detection module, the data processing module is electrically connected to a data comparison module, the data comparison module is electrically connected to the control module, during the valley power period, the present invention uses a water storage tank for primary energy storage and a freezer for secondary energy storage, uses a temperature sensor in the detection module to detect temperature, and uses a data comparison module to determine temperature, thereby realizing intelligent control and regulation.

Description

Technical Field

[0001] The present invention relates to the field of central air-conditioning energy storage, and in particular to a valley power energy storage control system and method for central air-conditioning. Background Art

[0002] With the development of economy and the improvement of people's living standards, the demand for electric energy is growing, which makes the capacity of power grid expand and the structure of electricity consumption change greatly, making the peak-to-valley difference of each power grid increase day by day. In general, the peak-to-valley difference of each power grid increases day by day, and the contradiction between the peak-to-valley capacity of power grid and the objective peak-to-valley need is very sharp. With the power stations built in the past two years being put into operation and the national regulation of macroeconomics and restrictions on high-energy-consuming enterprises, the problem of lack of peak-to-valley means during the valley will become more prominent. The peak-to-valley demand of power grid is of great significance in dealing with the increasingly serious peak-to-valley problem.

[0003] Valley electricity is generally called off-peak electricity, that is, relative to the peak electricity consumption during the day, due to the low electricity consumption at night, a large amount of electricity loss is caused. By changing the electricity price during the off-peak period to attract users to use electricity during the off-peak period, both the electricity loss and the electricity load during the peak period are reduced, thereby achieving the purpose of peak shaving and valley filling and peak load expansion.

[0004] Cold storage air conditioner is a kind of energy storage device and the main component of cold storage air conditioning system. Air conditioning refrigeration equipment uses the low point refrigeration at night to store the cold energy in the form of cold water or solidified phase change material, and uses the stored cold energy to supply cooling to the air conditioning system in part or in full during the peak load period of air conditioning, so as to reduce the installation capacity of refrigeration equipment, reduce operating costs and reduce the peak load of electricity.

[0005] However, the existing valley power storage control system of central air conditioners has the following problems:

[0006] That is, when the existing valley power storage control system of the central air conditioner is in use, a water tank is generally used to extract cold water from deep underground for storage during the valley power period, and then the cold water in the water tank is recycled during the peak power consumption, and then the heat is exchanged through the surface cooler to discharge the cold air in the stored cold water, thereby reducing the energy consumption of the central air conditioner. However, when in use, the water temperature in the water tank will gradually increase with the increase in the length of use. At this time, the temperature of the space environment will be higher than the temperature inside the water tank, and the cold air can no longer be output, and intelligent control and adjustment can not be achieved according to the detected temperature. Summary of the invention

[0007] In order to make up for the above shortcomings, the present invention provides a valley power energy storage control system for central air conditioning and a method thereof, aiming to improve the existing valley power energy storage control system of central air conditioning. When in use, a water storage tank is generally used to extract cold water from deep underground for storage during valley power periods, and then at peak power consumption, the cold water in the water tank is recycled, and then heat exchange is performed through a surface cooler to discharge the cold air in the stored cold water, thereby reducing the energy consumption of the central air conditioner. However, when in use, the water temperature in the water tank will gradually increase with the increase in the use time. At this time, the temperature of the space environment will be greater than the temperature inside the water tank, and the cold air can no longer be output, and intelligent control and adjustment can no longer be achieved according to the detected temperature.

[0008] The present invention is achieved in that:

[0009] A valley power storage control system for a central air conditioner, comprising a water storage tank and a freezing box, wherein a plurality of water distribution plates are fixedly welded inside the water storage tank, and the setting of the plurality of water distribution plates is used to distribute water in the water storage tank to prevent the water flow from being too large and causing impact, wherein a plurality of refrigeration plate modules are fixedly installed inside the freezing box, and the setting of the plurality of refrigeration plate modules is used to refrigerate the water flow in the freezing box to form ice cubes, and a first drain pipe is connected to the bottom of one side of the water storage tank, and a first water pump is installed on the first drain pipe, and the first water pump is connected to the first drain pipe through the first drain pipe. The water pipe extracts the water flow inside the water storage tank and transports the water flow. The upper part of the first water pump is connected with a second drain pipe, and the second drain pipe is connected with a plurality of branch pipes. The plurality of branch pipes penetrate the interior of the freezing box, and one end of the branch pipe is connected with the second drain pipe through a connecting pipe. The setting of the plurality of branch pipes cools the water flow inside the water storage tank through the freezing box. The second drain pipe is installed with a surface cooler, and the setting of the surface cooler is used to convert the cold air emitted by the second drain pipe to transport the cold air.

[0010] The other side of the water storage tank is connected with a water pump, the water pump is connected with a first solenoid valve, the water pump is connected with a second water pump, the second water pump is used to extract low-temperature water from deep underground, the first drainage pipe is connected with a second solenoid valve, a plurality of branch pipes are respectively connected with third solenoid valves, the second drainage pipe is connected with a fourth solenoid valve, the connecting pipe is connected with a fifth solenoid valve, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve all belong to the solenoid valve module, and the first water pump and the second water pump all belong to the water pump module;

[0011] The freezer is also connected to a discharge pipe, one side of the surface cooler is connected to a return pipe, the return pipe is connected to the water storage tank, the discharge pipe and the return pipe are both connected to an external water storage tower, the second drain pipe is embedded in the surface cooler through a plurality of branched distribution pipes, and the surface cooler is used to convert and discharge cold air;

[0012] It also includes a control module, the control module is electrically connected to a data processing module, the data processing module is electrically connected to a detection module, the data processing module is used to realize calculation and processing of data information collected by the detection module, so as to improve the accuracy and security of the data information, the detection module includes a plurality of temperature sensors and a plurality of water level sensors, the plurality of temperature sensors and the plurality of water level sensors include those arranged inside the water storage tank and the freezing box, and also include a temperature sensor arranged in the space environment, the data processing module is electrically connected to a data comparison module, the data comparison module is electrically connected to the control module, the data comparison module is used to realize detection and comparison of the temperature in the water storage tank and the freezing box and the temperature in the space environment, the control module is electrically connected to a relay module, the relay module includes a plurality of relay modules, the relay modules are respectively electrically connected to a solenoid valve module, a water pump module and the refrigeration plate module, and the relay module is used to realize on-off control and regulation of the electrical equipment of the system.

[0013] In one embodiment of the present invention, a first tank cover is fixedly connected to the upper end of the water tank, a second tank cover is fixedly connected to the upper end of the freezer, the water tank and the freezer are both located deep in the basement, and multiple layers of insulation layers are fixedly bonded to the outside of the water tank and the freezer.

[0014] In one embodiment of the present invention, the control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, the voltage regulating module includes a step-down circuit for reducing the voltage of the power supply module, a conversion circuit for converting the AC voltage of the power supply module into a DC voltage, a voltage stabilizer for stabilizing voltage fluctuations, and a filter circuit for filtering out the AC voltage in the DC voltage.

[0015] In one embodiment of the present invention, the power supply module is also respectively connected to the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler, and the power supply module realizes power supply operation of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler, and the control module realizes on-off control and adjustment of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler through the relay module.

[0016] In one embodiment of the present invention, the data processing module includes a data information acquisition circuit for receiving the data information collected by the detection module, a data information conversion circuit for performing analog-to-digital conversion on the data information, a data information gain circuit for amplifying the data information, and a data information filtering circuit for filtering out noise from the data information.

[0017] In one embodiment of the present invention, the control module is electrically connected to an auxiliary module, and the auxiliary module includes a display, control buttons, an alarm, an indicator light, a memory and a communication module. The display is used to display data information, the control buttons are used to control and adjust the system, the alarm is used to implement alarm processing for system failures, the indicator light is used to display the operating status of the system, the memory includes a ROM memory and a RAM memory, and the communication module is used to realize remote communication transmission, and the communication module adopts a wireless communicator.

[0018] In one embodiment of the present invention, the solenoid valve module and the water pump module are connected and installed on a part of the pipeline of the water pipe module, and a part of the pipeline in the water pipe module passes through the surface cooler.

[0019] A method for a valley power storage control system for a central air conditioner, the method being used to implement any of the above system structures, comprising the following method steps:

[0020] S1. Energy storage during valley power period: During valley power period of each day, the control module realizes power supply operation through the power supply module and the voltage regulating module. At this time, the control module controls the relay of the second water pump in the water pump module in the relay module, so that the second water pump starts to run, and realizes the extraction of cold water from the deep underground layer, and the relay of the first solenoid valve in the relay module is used to open the first solenoid valve, so that the extracted cold water can be stored in the water storage tank, and a plurality of water distribution plates are arranged inside the water storage tank, and the water distribution plates are set to prevent the water flow from being too turbulent and keep the water flow stable;

[0021] S2, during the off-peak period, the freezer is low-temperature frozen: while extracting cold water from the deep underground, the control module starts the refrigeration module through the relay controlling the refrigeration module in the relay group, so that the refrigeration module can freeze the water flow inside the freezer to store energy;

[0022] S3. During the peak period of electricity consumption, the energy storage system is started: during the peak period of electricity consumption during the day, the control module detects the temperature of the space environment through the data processing module and the detection module, that is, the temperature sensors and water level sensors in the water tank, freezer and space environment in the detection module perform data detection, that is, the collected space environment temperature and the temperature of the water tank are compared through the data comparison module. When the space environment temperature is high, the control module controls the relays of the first water pump, the second solenoid valve and the fourth solenoid valve in the relay module to open the first water pump, the second solenoid valve and the fourth solenoid valve, so that the first water pump can extract the water flow inside the water tank, so that the water flow can be output through the first drain pipe and the second drain pipe, and then heat exchange can be achieved through the surface cooler, and the cold air is transported to the central air conditioner to cool the environment. In addition, the water level sensor facilitates the detection of the water level inside the water tank and the freezer to prevent the water level from being too high.

[0023] S4, when the space environment temperature is higher than the temperature inside the water tank, the temperature is lowered again through the freezer: when the detected space environment temperature is higher than the temperature detected by the water tank, the fourth solenoid valve is closed through the relay in the relay module, and then the third solenoid valve and the fifth solenoid valve are opened through the relay in the relay module, so that the water flow inside the water tank is transported through the first drain pipe, several branch pipes and the connecting pipe, so that the water in the several branch pipes is cooled by the freezer, and then the water flow is transported to the surface cooler through the second drain pipe, and heat exchange can be achieved through the surface cooler, and the cold air is transported to the central air conditioner to cool the environment;

[0024] S5. Recycle the water flow: During peak power consumption, the stored water absorbs cold air through the surface cooler and is then transported to the inside of the water tank through the return pipe for recycling. During off-peak power consumption, the water in the water tank is transported to an external water storage tower through the return pipe to empty the inside of the water tank. Then, step S1 is repeated to store the cold water deep underground in the water tank. After long-term use, the water flow in the freezer is also transported to the external water storage tower, and then the water in the freezer is frozen again.

[0025] The beneficial effects of the present invention are:

[0026] The present invention realizes primary energy storage by providing a water storage tank, and then realizes secondary energy storage by a freezing box, that is, during the valley power period, cold water from deep underground is extracted by a second water pump and stored in the water storage tank, and at the same time, the water in the freezing box is frozen by a refrigeration plate module, and then at the peak of power consumption, temperature detection is performed by a temperature sensor in the detection module, that is, the temperature of the space environment, the temperature of the water storage tank and the temperature of the freezing box are detected, and the temperature is determined by a data comparison module, that is, the temperature of the space environment and the temperature of the water storage tank are intelligently determined, that is, when the temperature of the space environment is lower than the temperature of the water storage tank, water is transported and cooled by the water storage tank, and when the temperature of the space environment is higher than the temperature of the water storage tank, the transported water is first cooled by the freezing box, and then transported and cooled, so as to realize valley power storage, and transport cold air for cooling during the peak of power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural block diagram provided by an embodiment of the present invention;

[0029] Figure 2 It is a partial structural block diagram provided by an embodiment of the present invention;

[0030] Figure 3 is a system structure block diagram provided by an embodiment of the present invention;

[0031] Figure 4 It is a structural flowchart of the steps provided by the implementation mode of the present invention.

[0032] In the figure: 1-water storage tank; 2-freezing tank; 3-water distribution plate; 4-refrigeration plate module; 5-first drain pipe; 6-first water pump; 7-second solenoid valve; 8-branch pipe; 9-third solenoid valve; 10-second drain pipe; 11-fourth solenoid valve; 12-connecting pipe; 13-fifth solenoid valve; 14-cooler; 15-return pipe; 16-water suction pipe; 17-first solenoid valve; 18-second water pump; 19-first tank cover; 20-second tank cover. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0034] See also Figure 1-4 The present invention provides a technical solution: a valley power storage control system for central air conditioning, comprising a water storage tank 1 and a freezing box 2, wherein a plurality of water distribution plates 3 are fixedly welded inside the water storage tank 1, and the setting of the plurality of water distribution plates 3 is used to distribute water in the water flow inside the water storage tank 1 to prevent the water flow from being too large and causing impact, and a plurality of refrigeration plate modules 4 are fixedly installed inside the freezing box 2, and the setting of the plurality of refrigeration plate modules 4 is used to refrigerate the water flow inside the freezing box 2 to form ice cubes, and a first drainage pipe 5 is connected to the bottom of one side of the water storage tank 1, and a first water pump 6 is installed on the first drainage pipe 5, and the first water pump 6 is connected to the first The drain pipe 5 is used to extract the water flow inside the water storage tank 1 and to transport the water flow. The upper part of the first water pump 6 is connected to the second drain pipe 10, and the second drain pipe 10 is connected to a plurality of branch pipes 8. The plurality of branch pipes 8 penetrate the interior of the freezing box 2. One end of the branch pipe 8 is connected to the second drain pipe 10 through a connecting pipe 12. The setting of the plurality of branch pipes 8 cools the water flow inside the water storage tank 1 through the freezing box 2. The second drain pipe 10 is installed with a surface cooler 14. The setting of the surface cooler 14 is used to convert the cold air emitted by the second drain pipe 10 and transport the cold air.

[0035] In order to extract low-temperature water from deep underground, store energy, and control and adjust the flow direction of water flow, the other side of the water storage tank 1 is connected to a water pumping pipe 16, and the water pumping pipe 16 is connected to a first solenoid valve 17, and the water pumping pipe 16 is connected to a second water pump 18, and the second water pump 18 is used to extract low-temperature water from deep underground. The first drainage pipe 5 is connected to a second solenoid valve 7, and several branch pipes 8 are respectively connected to third solenoid valves 9. The second drainage pipe 10 is connected to a fourth solenoid valve 11, and the connecting pipe 12 is connected to a fifth solenoid valve 13. The first solenoid valve 17, the second solenoid valve 7, the third solenoid valve 9, the fourth solenoid valve 11 and the fifth solenoid valve 13 all belong to the solenoid valve module, and the first water pump 6 and the second water pump 18 all belong to the water pump module;

[0036] In order to realize the recycling of water flow, the freezing box 2 is also connected with a discharge pipe, and one side of the surface cooler 14 is connected with a return pipe 15, and the return pipe 15 is connected with the water storage tank 1. The discharge pipe and the return pipe 15 are both connected with an external water storage tower. The second drain pipe 10 is embedded in the surface cooler 14 through a plurality of branched distribution pipes. The surface cooler 14 is used to convert and discharge cold air;

[0037] It also includes a control module, the control module is electrically connected to a data processing module, the data processing module is electrically connected to a detection module, the data processing module is used to realize calculation and processing of data information collected by the detection module, and improve the accuracy and safety of the data information, the detection module includes a plurality of temperature sensors and a plurality of water level sensors, the plurality of temperature sensors and the plurality of water level sensors are arranged inside the water storage tank 1 and the freezing box 2, and also includes a temperature sensor arranged in the space environment, the data processing module is electrically connected to a data comparison module, the data comparison module is electrically connected to the control module, the data comparison module is used to realize detection and comparison of the temperature in the water storage tank 1 and the freezing box 2 and the temperature in the space environment, the control module is electrically connected to a relay module, the relay module includes a plurality of relay modules, the relay modules are respectively electrically connected to a solenoid valve module, a water pump module and the refrigeration plate module 4, and the relay module is used to realize on-off control and regulation of the electrical equipment of the system.

[0038] In order to achieve insulation treatment of the water tank 1 and the freezer box 2 and prevent temperature leakage, in an embodiment of the present invention, the upper end of the water tank 1 is fixedly connected to a first tank cover 19, and the upper end of the freezer box 2 is fixedly connected to a second tank cover 20. The water tank 1 and the freezer box 2 are both located deep in the basement, and multiple layers of insulation layers are fixedly adhered to the outer sides of the water tank 1 and the freezer box 2.

[0039] In order to power the system and maintain stable operation of the system, in one embodiment of the present invention, the control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, and the voltage regulating module includes a step-down circuit for reducing the voltage of the power supply module, a conversion circuit for converting the AC voltage of the power supply module into a DC voltage, a voltage stabilizer for stabilizing voltage fluctuations, and a filter circuit for filtering out the AC voltage in the DC voltage.

[0040] In order to realize power supply operation of the electrical equipment in the system, in an embodiment of the present invention, the power supply module is also respectively connected to the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler 14, and the power supply module realizes power supply operation of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler 14, and the control module realizes on-off control and adjustment of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler 14 through the relay module.

[0041] In order to realize computational processing of the collected data information and improve the accuracy and security of the data information, in one embodiment of the present invention, the data processing module includes a data information acquisition circuit for receiving the data information collected by the detection module, a data information conversion circuit for realizing analog-to-digital conversion of the data information, a data information gain circuit for realizing amplification processing of the data information, and a data information filtering circuit for filtering out noise from the data information.

[0042] In order to realize auxiliary operation of the system operation and improve the convenience of use, in one embodiment of the present invention, the control module is electrically connected to an auxiliary module, and the auxiliary module includes a display, control buttons, an alarm, an indicator light, a memory and a communication module. The display is used to display data information, the control buttons are used to control and adjust the system, the alarm is used to implement alarm processing for system failures, the indicator light is used to display the operating status of the system, the memory includes a ROM memory and a RAM memory, and the communication module is used to realize remote communication transmission, and the communication module adopts a wireless communicator.

[0043] In order to realize the water flow transportation, control and regulation, and heat exchange treatment, in one embodiment of the present invention, the solenoid valve module and the water pump module are connected and installed on part of the pipeline of the water pipe module, and part of the pipeline in the water pipe module passes through the surface cooler 14.

[0044] A method for a valley power storage control system for a central air conditioner, the method being used to implement any of the above system structures, comprising the following method steps:

[0045] S1. Energy storage during valley power period: During valley power period of each day, the control module realizes power supply operation through the power supply module and the voltage regulating module. At this time, the control module controls the relay of the second water pump 18 in the water pump module in the relay module, so that the second water pump 18 starts to operate, and realizes the extraction of cold water from the deep underground layer, and the first solenoid valve 17 is opened by the relay of the first solenoid valve 17 in the relay module, so that the extracted cold water can be stored in the water storage tank 1, and a plurality of water distribution plates 3 are provided in the water storage tank 1, and the water distribution plates 3 are set to prevent the water flow from being too turbulent and keep the water flow stable;

[0046] S2, during the off-peak period, the freezing box 2 is low-temperature frozen: while extracting cold water from the deep underground, the control module starts the cooling module 4 through the relay controlling the cooling module 4 in the relay group, so that the cooling module 4 can freeze the water flow inside the freezing box 2 to store energy;

[0047] S3. Start the energy storage system during the peak period of electricity consumption: during the peak period of electricity consumption during the day, the control module detects the temperature of the space environment through the data processing module and the detection module, that is, the water tank 1, the freezing box 2 and the temperature sensor and the water level sensor in the space environment in the detection module perform data detection, that is, the collected space environment temperature and the temperature of the water tank 1 are compared through the data comparison module. When the space environment temperature is high, the control module controls the relays of the first water pump 6, the second solenoid valve 7 and the fourth solenoid valve 11 in the relay module to open the first water pump 6, the second solenoid valve 7 and the fourth solenoid valve 11, so that the first water pump 6 can extract the water flow inside the water tank 1, so that the water flow can be output through the first drain pipe 5 and the second drain pipe 10, and then heat exchange can be achieved through the surface cooler 14, and the cold air is transported to the central air conditioner to cool the environment. In addition, the water level sensor facilitates the detection of the water level inside the water tank 1 and the freezing box 2 to prevent the water level from being too high.

[0048] S4, when the space environment temperature is greater than the temperature inside the water storage tank 1, the temperature is lowered again through the freezer 2: when the detected space environment temperature is greater than the temperature detected by the water storage tank 1, the fourth solenoid valve 11 is closed through the relay in the relay module, and then the third solenoid valve 9 and the fifth solenoid valve 13 are opened through the relay in the relay module, so that the water flow inside the water storage tank 1 is transported through the first drain pipe 5, the plurality of branch pipes 8 and the connecting pipe 12, so that the water in the plurality of branch pipes 8 is cooled through the freezer 2, and then the water flow is transported to the surface cooler 14 through the second drain pipe 10, and heat exchange can be achieved through the surface cooler 14, and the cold air is transported to the central air conditioner to cool the environment;

[0049] S5. Recycle the water flow: During peak power consumption, the stored water absorbs cold air through the surface cooler 14 and is then transported to the inside of the water tank 1 again through the return pipe 15 to achieve recycling. During off-peak power consumption, the water in the water tank 1 is transported to an external water storage tower through the return pipe 15 to empty the inside of the water tank 1, and then repeat step S1 to store the cold water deep underground in the water tank 1. After long-term use, the water flow in the freezer 2 is also transported to the external water storage tower, and then the water in the freezer 2 is frozen again.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valley power storage control system for central air conditioning, characterized in that: The invention comprises a water storage tank (1) and a freezing tank (2). A plurality of water distribution plates (3) are fixedly welded inside the water storage tank (1). The plurality of water distribution plates (3) are set to distribute water in the water storage tank (1) to prevent the water flow from being too large and causing impact. A plurality of refrigeration plate modules (4) are fixedly installed inside the freezing tank (2). The plurality of refrigeration plate modules (4) are set to refrigerate the water flow in the freezing tank (2) to form ice cubes. A first drainage pipe (5) is connected to the bottom of one side of the water storage tank (1). A first water pump (6) is installed on the first drainage pipe (5). The first water pump (6) discharges water in the water storage tank (1) through the first drainage pipe (5). The water flow in the water storage tank (1) is extracted to realize water transportation, the upper part of the first water pump (6) is connected to a second drainage pipe (10), the second drainage pipe (10) is connected to a plurality of branch pipes (8), the plurality of branch pipes (8) penetrate the interior of the freezing box (2), one end of the branch pipe (8) is connected to the second drainage pipe (10) through a connecting pipe (12), the plurality of branch pipes (8) are set to cool the water flow in the water storage tank (1) through the freezing box (2), the second drainage pipe (10) is installed with a surface cooler (14), the surface cooler (14) is set to realize the conversion of cold air emitted by the second drainage pipe (10) to realize the transportation of cold air; The other side of the water storage tank (1) is connected to a water suction pipe (16), the water suction pipe (16) is connected to a first solenoid valve (17), the water suction pipe (16) is connected to a second water pump (18), the second water pump (18) is used to extract low-temperature water from a deep underground layer, the first drainage pipe (5) is connected to a second solenoid valve (7), a plurality of branch pipes (8) are respectively connected to third solenoid valves (9), the second drainage pipe (10) is connected to a fourth solenoid valve (11), the connecting pipe (12) is connected to a fifth solenoid valve (13), the first solenoid valve (17), the second solenoid valve (7), the third solenoid valve (9), the fourth solenoid valve (11) and the fifth solenoid valve (13) all belong to a solenoid valve module, and the first water pump (6) and the second water pump (18) all belong to a water pump module; The freezing box (2) is also connected to a discharge pipe, and one side of the surface cooler (14) is connected to a return pipe (15), the return pipe (15) is connected to the water storage tank (1), the discharge pipe and the return pipe (15) are both connected to an external water storage tower, the second drainage pipe (10) is embedded in the surface cooler (14) through a plurality of branched distribution pipes, and the surface cooler (14) is used to convert and discharge cold air; The system further comprises a control module, the control module being electrically connected to a data processing module, the data processing module being electrically connected to a detection module, the data processing module being used to perform calculations on data information collected by the detection module to improve the accuracy and safety of the data information, the detection module comprising a plurality of temperature sensors and a plurality of water level sensors, the plurality of temperature sensors and the plurality of water level sensors being arranged inside the water storage tank (1) and the freezing chamber (2), and a temperature sensor being arranged in a space environment, the data processing module being electrically connected to a data comparison module, the data comparison module being electrically connected to the control module, the data comparison module being used to perform detection and comparison on the temperature in the water storage tank (1) and the freezing chamber (2) and the temperature in the space environment, the control module being electrically connected to a relay module, the relay modules comprising a plurality of relay modules, the relay modules being electrically connected to a solenoid valve module, a water pump module and the refrigeration plate module (4) respectively, the relay module being used to perform on-off control and regulation on the electrical equipment of the system.

2. A valley power storage control system for central air conditioning according to claim 1, characterized in that: The upper end of the water storage tank (1) is fixedly connected to a first tank cover (19), and the upper end of the freezing tank (2) is fixedly connected to a second tank cover (20). The water storage tank (1) and the freezing tank (2) are both located deep in the basement, and multiple layers of thermal insulation layers are fixedly bonded to the outer sides of the water storage tank (1) and the freezing tank (2).

3. A valley power storage control system for central air conditioning according to claim 1, characterized in that: The control module is electrically connected to a voltage regulating module, and the voltage regulating module is electrically connected to a power supply module. The voltage regulating module includes a step-down circuit for reducing the voltage of the power supply module, a conversion circuit for converting the AC voltage of the power supply module into a DC voltage, a voltage stabilizer for stabilizing voltage fluctuations, and a filter circuit for filtering out the AC voltage in the DC voltage.

4. A valley power storage control system for central air conditioning according to claim 3, characterized in that: The power supply module is also respectively connected to the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler (14), and the power supply module realizes power supply operation of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler (14), and the control module realizes on-off control and regulation of the refrigeration plate module, the water pump module, the solenoid valve module and the surface cooler (14) through the relay module.

5. A valley power storage control system for central air conditioning according to claim 1, characterized in that: The data processing module includes a data information acquisition circuit for receiving the data information collected by the detection module, a data information conversion circuit for performing analog-to-digital conversion on the data information, a data information gain circuit for amplifying the data information, and a data information filtering circuit for filtering out clutter from the data information.

6. A valley power storage control system for central air conditioning according to claim 1, characterized in that: The control module is electrically connected to an auxiliary module, which includes a display, control buttons, an alarm, an indicator light, a memory and a communication module. The display is used to display data information, the control buttons are used to control and adjust the system, the alarm is used to implement alarm processing for system failures, the indicator light is used to display the operating status of the system, the memory includes a ROM memory and a RAM memory, and the communication module is used to realize remote communication transmission, and the communication module adopts a wireless communicator.

7. A valley power storage control system for central air conditioning according to claim 1, characterized in that: The solenoid valve module and the water pump module are connected and installed on part of the pipeline of the water pipe module, and part of the pipeline in the water pipe module passes through the surface cooler (14).

8. A method for valley power storage control system for central air conditioning, characterized in that: The method is used to implement the system described in any one of claims 1 to 7, and includes the following method steps: S1, storing energy during valley power periods: during valley power periods every day, the control module realizes power supply operation through the power supply module and the voltage regulating module, and at this time, the control module controls the relay of the second water pump (18) in the water pump module in the relay module, so that the second water pump (18) starts to operate, thereby extracting cold water from deep underground, and opens the first solenoid valve (17) through the relay of the first solenoid valve (17) in the relay module, so that the extracted cold water can be stored in the water storage tank (1), and a plurality of water distribution plates (3) are provided in the water storage tank (1), and the water distribution plates (3) are set to prevent the water flow from being too turbulent, thereby maintaining the stability of the water flow; S2, during the off-peak period, the freezing box (2) is low-temperature frozen: while extracting cold water from the deep underground, the control module starts the cooling module (4) through the relay controlling the cooling module (4) in the relay group, so that the cooling module (4) can freeze the water flow inside the freezing box (2) to store energy; S3. During the peak period of electricity consumption, the energy storage system is started: during the peak period of electricity consumption during the day, the control module detects the temperature of the space environment through the data processing module and the detection module, that is, the water storage tank (1), the freezer (2) and the temperature sensor and the water level sensor in the space environment perform data detection, that is, the collected space environment temperature and the temperature of the water storage tank (1) are compared through the data comparison module. When the space environment temperature is high, the control module controls the first water pump (6) and the second solenoid valve (7) through the relay module. , and a relay of the fourth solenoid valve (11) to open the first water pump (6), the second solenoid valve (7) and the fourth solenoid valve (11), so that the first water pump (6) can extract water from the water storage tank (1), so that the water can be output through the first drainage pipe (5) and the second drainage pipe (10), and then heat exchange can be achieved through the surface cooler (14), and cold air can be transported to the central air conditioner to cool the environment, and the water level sensor can detect the water level inside the water storage tank (1) and the freezer (2) to prevent the water level from being too high; S4, when the spatial environment temperature is higher than the temperature inside the water storage tank (1), the temperature is lowered again through the freezer (2): when the detected spatial environment temperature is higher than the temperature detected by the water storage tank (1), the fourth solenoid valve (11) is closed through the relay in the relay module, and then the third solenoid valve (9) and the fifth solenoid valve (13) are opened through the relay in the relay module, so that the water flow inside the water storage tank (1) is transported through the first drainage pipe (5), the plurality of branch pipes (8) and the connecting pipe (12), so that the water in the plurality of branch pipes (8) is cooled through the freezer (2), and then the water flow is transported to the surface cooler (14) through the second drainage pipe (10), and heat exchange can be achieved through the surface cooler (14), and the cold air is transported to the central air conditioner to cool the environment; S5. Recycling the water flow: During peak power consumption, the stored water, after absorbing cold air through the surface cooler (14), is transported to the inside of the water storage tank (1) again through the return pipe (15) to achieve recycling. During off-peak power consumption, the water in the water storage tank (1) is transported to an external water storage tower through the return pipe (15) to empty the inside of the water storage tank (1). Then, step S1 is repeated to store cold water deep underground in the water storage tank (1). After long-term use, the water flow in the freezing box (2) is also transported to the external water storage tower, and then the water in the freezing box (2) is frozen again.

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