A groundwater stratified energy storage system and method

Abstract

The present application provides a groundwater stratified energy storage system and method, which are applied to the field of energy utilization technology to solve the technical problems of groundwater extraction and irrigation imbalance and insufficient heat supply and exchange capacity. Specifically: according to the geographical location and time of extraction and irrigation, the working mode of the extraction and irrigation unit is determined; the extraction and irrigation unit is controlled to perform same-layer extraction and irrigation through the aquifer corresponding to the working mode; wherein the heating mode corresponds to the far surface aquifer, and the cooling mode corresponds to the near surface aquifer; when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, the aquifer in an idle state is determined as the target aquifer, and the extraction and irrigation unit is controlled to perform heterogeneous extraction and irrigation through the aquifer corresponding to the working mode and the target aquifer. In this way, in the heating mode, the relatively high temperature of the far surface aquifer is used for heating to improve the heat supply and exchange capacity, and the heterogeneous extraction and irrigation mode is adopted when the recharge efficiency is lower than the preset efficiency to avoid groundwater extraction and irrigation imbalance.

Description

Technical Field

[0001] The present application relates to the field of energy utilization, and specifically, to a groundwater stratified energy storage system and method. Background Art

[0002] In recent years, as the attention to the use of renewable energy continues to increase, ground source heat pumps have been widely used as an efficient and environmentally friendly heating and cooling method. The groundwater ground source heat pump system extracts and recharges groundwater resources and uses the relatively stable temperature characteristics of groundwater to achieve heating and cooling of buildings.

[0003] At present, the traditional groundwater source heat pump system mainly relies on shallow groundwater resources (usually refers to the strata with a burial depth of no more than 200 meters), which are mostly composed of geological structures such as clay and silt. However, some problems have been found in the actual application process: on the one hand, due to the influence of geological conditions, such as the poor permeability of clay, silt and other strata, it is easy to cause imbalance in the process of groundwater extraction and irrigation; on the other hand, the heat exchange capacity of the shallow strata is limited. In the cold climate area with low ambient temperature, the temperature of the shallow strata is even lower. The heat exchange capacity of the shallow strata cannot meet the heat demand of the cold climate area, which significantly reduces the heat supply and exchange efficiency of the system and affects the operation effect and economic benefits of the system. In addition, in the process of heating in winter and cooling in summer, the traditional system fails to make full use of the underground heat storage and insulation characteristics, resulting in energy loss. These problems not only limit the promotion and application of groundwater source heat pump systems in more areas, especially in areas with complex geological conditions and harsh climate environments, but also increase the operating cost of the system and reduce the user experience. Therefore, how to effectively solve problems such as imbalance in groundwater extraction and injection and insufficient heat supply and exchange capacity has become the key to improving the performance of groundwater source heat pump systems. Summary of the invention

[0004] The purpose of the present application is to provide a groundwater stratified energy storage system and method to solve the technical problems of groundwater extraction and injection imbalance and insufficient heat supply and exchange capacity existing in the prior art.

[0005] On the one hand, the present application provides a groundwater stratified energy storage system, including: an irrigation unit, a terminal control unit, a monitoring unit and an energy supply unit; the terminal control unit is respectively connected to the control end and the monitoring unit of the irrigation unit for communication; the first end of the irrigation unit is connected to the first end of the energy supply unit via a first pipeline, and the second end of the irrigation unit is connected to the second end of the energy supply unit via a second pipeline;

[0006] A terminal control unit is used to obtain an irrigation geographical location and an irrigation time; determine a working mode of the irrigation unit according to the irrigation geographical location and the irrigation time; wherein the working mode includes a heating mode and a cooling mode; control the irrigation unit to perform same-layer irrigation through an aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is a far-surface aquifer, and the aquifer corresponding to the cooling mode is a near-surface aquifer; receive operating data of a groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine an aquifer in an idle state as a target aquifer, and control the irrigation unit to perform different-layer irrigation through an aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency;

[0007] A monitoring unit, used to collect system monitoring data of the groundwater stratified energy storage system and send the operating data to the terminal control unit; wherein the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data;

[0008] The extraction and irrigation unit is used to perform the same-layer extraction and irrigation or different-layer extraction and irrigation under the control of the terminal control unit, so that the groundwater flows through the first pipeline, the energy supply unit and the second pipeline;

[0009] Energy supply unit, used to provide heating or cooling to the user end through the groundwater flowing through it.

[0010] Optionally, the production and irrigation unit includes: a first production and irrigation well, a first production and irrigation mechanism, a first inflatable packer device, a second production and irrigation well, a second production and irrigation mechanism, and a second inflatable packer device; the working states of the first production and irrigation mechanism and the second production and irrigation mechanism are opposite;

[0011] The first inflatable packer device is arranged at both ends of the first extraction and irrigation mechanism, and the first extraction and irrigation mechanism and the first inflatable packer device are arranged in the first extraction and irrigation well in a manner that they can be lifted and lowered; the first extraction and irrigation mechanism is connected to the energy supply unit via a first pipeline;

[0012] The second inflatable packer device is arranged at both ends of the second production and irrigation mechanism. The second production and irrigation mechanism and the second inflatable packer device are arranged in a liftable manner in the second production and irrigation well. The second production and irrigation mechanism is connected to the energy supply unit via a second pipeline.

[0013] Optionally, the monitoring unit includes: an aquifer monitoring subunit; the aquifer monitoring subunit is communicatively connected with the terminal control unit;

[0014] The aquifer monitoring subunit is used to collect aquifer monitoring data at the connection between each aquifer in the near-surface aquifer and the far-surface aquifer and the first production and irrigation well and the second production and irrigation well, and send the aquifer monitoring data to the terminal control unit; wherein the aquifer monitoring data includes at least one of settlement data, geothermal data and water level data.

[0015] Optionally, the monitoring unit further includes: a pipeline monitoring subunit; the pipeline monitoring subunit is communicatively connected with the terminal control unit;

[0016] The pipeline monitoring subunit is used to collect pipeline monitoring data of the first pipeline and the second pipeline respectively, and send the pipeline monitoring data to the terminal control unit; wherein the pipeline monitoring data includes at least one of flow data, water temperature data and pressure data.

[0017] Optionally, when controlling the irrigation unit to perform same-layer irrigation through the aquifer corresponding to the working mode, the terminal control unit is specifically used to:

[0018] When the working mode of the irrigation unit is the heating mode, the temperature of each remote surface aquifer is obtained, and the irrigation unit is controlled to irrigate the same layer through the remote surface aquifer with the highest temperature;

[0019] When the working mode of the irrigation and sampling unit is the cooling mode, the temperature of each near-surface aquifer is obtained, and the irrigation and sampling unit is controlled to perform irrigation and sampling in the same layer through the near-surface aquifer with the lowest temperature.

[0020] Optionally, when determining an idle aquifer as a target aquifer and controlling the irrigation unit to perform heterogeneous irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is specifically used to:

[0021] From the aquifers in the idle state, determine an aquifer that meets a first condition as a target aquifer; wherein the first condition is that the temperature difference between the aquifers corresponding to the working mode is the smallest;

[0022] The irrigation unit is controlled to perform different-layer irrigation in the opposite direction to the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0023] Optionally, after controlling the irrigation unit to perform different-layer irrigation in the opposite direction of the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is further used to:

[0024] After a preset time, the irrigation unit is controlled to perform different-layer irrigation in the same irrigation direction as the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0025] Optionally, the groundwater stratified energy storage system further includes: a light energy storage unit; the light energy storage unit is arranged on the first pipeline; the light energy storage unit is communicatively connected with the terminal control unit; the working mode further includes a compensation energy storage mode;

[0026] The terminal control unit is used to control the extraction and irrigation unit to perform the same-layer extraction and irrigation in sequence through the corresponding far-surface aquifer or near-surface aquifer in accordance with the aquifer compensation sequence when the working mode is the compensation energy storage mode, so that the groundwater flows through the first pipeline, the solar energy storage unit, the energy supply unit and the second pipeline;

[0027] The light energy storage unit is used to convert light energy into heat energy to heat the groundwater flowing through the first pipeline.

[0028] On the other hand, the present application provides a groundwater stratified energy storage method, which is applied to a terminal control unit in the above-mentioned groundwater stratified energy storage system. The groundwater stratified energy storage method includes:

[0029] Get the geographical location and time of irrigation;

[0030] Determine the working mode of the irrigation unit according to the geographical location and time of irrigation; wherein the working mode includes heating mode and cooling mode;

[0031] Controlling the irrigation and sampling unit to perform the same-layer irrigation and sampling through the aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is the far-surface aquifer, and the aquifer corresponding to the cooling mode is the near-surface aquifer;

[0032] Receive operating data of a groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine an aquifer in an idle state as a target aquifer, and control the irrigation and extraction unit to perform heterogeneous irrigation and extraction through the aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency; and the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data.

[0033] Optionally, the working mode also includes a compensation energy storage mode, and the groundwater stratified energy storage method also includes:

[0034] When the working mode is the compensation energy storage mode, the irrigation and extraction unit is controlled to irrigate the same layer of the corresponding far-surface aquifer or near-surface aquifer in turn according to the aquifer compensation order, so that the groundwater flows through the first pipeline, the solar energy storage unit, the energy supply unit and the second pipeline, so that the solar energy storage unit heats the groundwater flowing through the first pipeline.

[0035] The beneficial effects of this application are as follows:

[0036] In this application, through the layered energy storage design, the aquifer is divided into a far surface aquifer and a near surface aquifer, and the working mode of the irrigation unit is intelligently determined according to the geographical location and time of irrigation. In the winter heating mode, the groundwater with a relatively high temperature in the far surface aquifer is used for heating, which can significantly improve the heat supply and exchange capacity. Moreover, through the real-time collection of system monitoring data by the monitoring unit, the terminal control unit can promptly detect changes in the system operation status, and adopt a different layer irrigation mode when the recharge efficiency is lower than the preset efficiency, so as to avoid imbalance in groundwater irrigation and further improve the system efficiency and stability. In addition, through the operation mode of combining the same layer irrigation and different layer irrigation, and combined with a flexible irrigation strategy adjustment mechanism, the groundwater layered energy storage system can better adapt to the energy needs under different seasons and environmental conditions, and provide an efficient and environmentally friendly solution for energy storage and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application 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.

[0038] Figure 1 A first schematic diagram of a framework of a groundwater stratified energy storage system provided in an embodiment of the present application;

[0039] Figure 2 A second schematic diagram of a groundwater stratified energy storage system provided in an embodiment of the present application;

[0040] Figure 3 A third schematic diagram of a framework of a groundwater stratified energy storage system provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of same-layer irrigation and extraction provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the first stage of heterogeneous layer extraction and irrigation provided in an embodiment of the present application;

[0043] Figure 6 A schematic diagram of the second stage of heterogeneous layer extraction and irrigation provided in an embodiment of the present application;

[0044] Figure 7 A fourth schematic diagram of a groundwater stratified energy storage system provided in an embodiment of the present application;

[0045] Figure 8 An overview flow chart of the groundwater stratification energy storage method provided in an embodiment of the present application.

[0046] Icons: 1-production and irrigation unit; 2-terminal control unit; 3-monitoring unit; 4-energy supply unit; 5-first pipeline; 6-second pipeline; 7-far surface aquifer; 8-near surface aquifer; 9-first production and irrigation well; 10-first production and irrigation mechanism; 11-first inflatable packer device; 12-second production and irrigation well; 13-second production and irrigation mechanism; 14-second inflatable packer device; 15-aquifer monitoring subunit; 16-pipeline monitoring subunit; 17-photovoltaic energy storage unit. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and beneficial effects of this application clearer, the technical solution in the embodiment of this application will be clearly and completely described below in conjunction with the drawings in the embodiment of this application. Obviously, the described embodiment is only a part of the embodiment of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In order to facilitate those skilled in the art to better understand the present application, the technical terms involved in the present application are briefly introduced below.

[0049] Remote aquifers are located deep underground, far from the surface, and are also called deep aquifers. Remote aquifers are deep, the water level is not easily affected by climatic conditions, and the water temperature is relatively high.

[0050] A near-surface aquifer is an aquifer located shallowly underground, close to the surface, also known as a shallow aquifer. The water level of a near-surface aquifer is shallow and the water temperature is relatively low.

[0051] Same-layer extraction and recharging refers to the extraction and recharging of groundwater from the same aquifer.

[0052] Heterogeneous extraction and recharging refers to the extraction and recharging of groundwater from different aquifers.

[0053] It should be noted that the terms "first", "second", etc. mentioned in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0054] After introducing the technical terms involved in the present application, the technical solutions provided by the embodiments of the present application are described in detail.

[0055] First, the groundwater stratified energy storage system provided in the embodiment of the present application is described in detail. Figure 1As shown, the groundwater stratified energy storage system provided in the embodiment of the present application at least includes: an irrigation unit 1, a terminal control unit 2, a monitoring unit 3 and an energy supply unit 4; the terminal control unit 2 is respectively connected to the control end of the irrigation unit 1 and the monitoring unit 3 for communication; the first end of the irrigation unit 1 is connected to the first end of the energy supply unit 4 via a first pipeline 5, and the second end of the irrigation unit 1 is connected to the second end of the energy supply unit 4 via a second pipeline 6;

[0056] The terminal control unit 2 is used to obtain the geographical location and time of irrigation; determine the working mode of the irrigation unit 1 according to the geographical location and time of irrigation; wherein the working mode includes a heating mode and a cooling mode; control the irrigation unit 1 to perform same-layer irrigation through the aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is the far-surface aquifer 7, and the aquifer corresponding to the cooling mode is the near-surface aquifer 8; receive the operating data of the groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine the aquifer in an idle state as the target aquifer, and control the irrigation unit 1 to perform different-layer irrigation through the aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency;

[0057] The monitoring unit 3 is used to collect system monitoring data of the groundwater stratified energy storage system and send the operating data to the terminal control unit 2; wherein the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data;

[0058] The irrigation unit 1 is used to perform same-layer irrigation or different-layer irrigation under the control of the terminal control unit 2, so that groundwater flows through the first pipeline 5, the energy supply unit 4 and the second pipeline 6;

[0059] The energy supply unit 4 is used to provide heating or cooling for the user end through the groundwater flowing through it.

[0060] exist Figure 1 In the groundwater stratified energy storage system shown, the stratified structure of groundwater includes at least one far surface aquifer 7 and at least one near surface aquifer 8. The vertical position relationship of each far surface aquifer 7 is generally that each far surface aquifer 7 exists in a superimposed manner, that is, one far surface aquifer 7 is located above or below another far surface aquifer 7. In a geological profile, there may be multiple aquifers composed of different lithologies, which are separated by aquicludes. The horizontal position relationship of each far surface aquifer 7 is generally that each far surface aquifer 7 exists in a parallel manner, that is, extends in the horizontal direction, and the distance between them is relatively stable. The setting method of each far surface aquifer 7 and each near surface aquifer 8 is roughly the same, and only the distance from the surface is different.

[0061] The monitoring units 3 are arranged at the detection positions of each remote surface aquifer 7 and each near surface aquifer 8, and the monitoring units 3 are also arranged on the first pipeline 5 and the second pipeline 6. The monitoring unit 3 can collect system monitoring data of the groundwater stratified energy storage system, including aquifer monitoring data and / or pipeline monitoring data, etc. The system monitoring data will be sent to the terminal control unit 2 to provide a basis for system operation monitoring and decision-making. As the core control part of the system, the terminal control unit 2 can adopt a mobile phone terminal or a computer terminal, etc., to obtain information such as the geographical location and time of irrigation and collection. According to this information, the terminal control unit 2 can determine the working mode of the irrigation and collection unit 1 and control the irrigation and collection unit 1 to perform corresponding operations. At the same time, the terminal control unit 2 can also receive the operation data of the groundwater stratified energy storage system. The terminal control unit 2 is pre-set with the threshold value of each system monitoring data corresponding to the system recharge efficiency being lower than the preset efficiency. When the system is determined to be in the preset system operation state according to the threshold value of each system monitoring data and each system monitoring data, the aquifer in the idle state is determined as the target aquifer, and the irrigation and collection unit 1 is controlled to perform heterogeneous irrigation. The collection and irrigation unit 1 is used for groundwater extraction and recharging operations. Specifically, the collection and irrigation unit 1 can realize the circulation of groundwater by collecting and irrigating in the same layer or in a different layer with a specific aquifer according to the instructions of the terminal control unit 2. The energy supply unit 4 uses the flowing groundwater to provide heating or cooling services to the user end, that is, through the circulation of groundwater, the energy supply unit 4 realizes energy conversion and transmission.

[0062] In practical applications, due to different factors such as climate conditions, geographical conditions and seasonal changes in different geographical locations, the heating time period and cooling time period in different geographical locations are different. In order to adapt to the changes in climate conditions corresponding to different geographical locations, a machine learning model or table is pre-set in the terminal control unit 2. The machine learning model or related table can provide the corresponding relationship between the irrigation geographical location and the irrigation time and the working mode, so that the terminal control unit 2 inputs the irrigation geographical location and the irrigation time into the machine learning model to obtain the working mode output by the machine learning model, or searches in the table according to the irrigation geographical location and the irrigation time to obtain the working mode. This working mode determination method can adapt to the changes in different geographical locations and climate conditions, ensuring that the system can always accurately reflect the local heating and cooling needs. This adaptability and flexibility enables the system to maintain efficient operation in various complex environments. In the heating mode, the terminal control unit 2 will control the irrigation unit 1 to irrigate the same layer as the far surface aquifer 7. Due to the relatively high temperature of the far surface aquifer 7, it can provide sufficient heat energy for heating. In the cooling mode, the terminal control unit 2 will control the irrigation unit 1 to irrigate the same layer as the near surface aquifer 8. The near-surface aquifer 8 can achieve an effective cooling effect due to its relatively low temperature. After determining the working mode, the irrigation unit 1 performs the same-layer irrigation operation with the corresponding aquifer according to the instructions of the terminal control unit 2, that is, the groundwater is extracted from the aquifer, and after energy conversion by the energy supply unit 4, it is returned to the same aquifer through the recharge well. The monitoring unit 3 can continuously collect system monitoring data of the groundwater stratified energy storage system and send these data to the terminal control unit 2. The terminal control unit 2 determines whether the system is in a preset system operation state (such as the recharge efficiency is lower than the preset efficiency) based on the received operation data. If the system is in this state, the terminal control unit 2 will determine the aquifer in the idle state as the target aquifer, and control the irrigation unit 1 to perform different-layer irrigation operation. Through different-layer irrigation, the recharge efficiency of the system can be effectively improved to ensure the stable operation of the system. In the whole process, the energy supply unit 4 continuously uses the groundwater flowing through to provide heating or cooling services to the user end. Through the circulation and energy conversion of groundwater, the energy supply unit 4 can meet the energy needs of the user end.

[0063] In this way, through the layered energy storage design, the aquifer is divided into a far-surface aquifer and a near-surface aquifer, and the working mode of the irrigation unit is intelligently determined according to the geographical location and time of irrigation. In the winter heating mode, the groundwater with a relatively high temperature in the far-surface aquifer is used for heating, which can significantly improve the heat supply and exchange capacity. Moreover, through the real-time collection of system monitoring data by the monitoring unit, the terminal control unit can promptly detect changes in the system operation status, and adopt a different-layer irrigation mode when the recharge efficiency is lower than the preset efficiency, so as to avoid imbalance in groundwater irrigation and further improve the system efficiency and stability. In addition, through the combination of the same-layer irrigation and different-layer irrigation and extraction operation mode, combined with a flexible irrigation and extraction strategy adjustment mechanism, the groundwater layered energy storage system can better adapt to the energy needs under different seasons and environmental conditions, and provide an efficient and environmentally friendly solution for energy storage and utilization.

[0064] In one possible implementation, see Figure 2 As shown, the extraction and irrigation unit comprises: a first extraction and irrigation well 9, a first extraction and irrigation mechanism 10, a first inflatable packer device 11, a second extraction and irrigation well 12, a second extraction and irrigation mechanism 13 and a second inflatable packer device 14; the working states of the first extraction and irrigation mechanism 10 and the second extraction and irrigation mechanism 13 are opposite;

[0065] The first inflatable packer device 11 is arranged at both ends of the first extraction and irrigation mechanism 10. The first extraction and irrigation mechanism 10 and the first inflatable packer device 11 are arranged in a first extraction and irrigation well 9 in a manner that they can be lifted and lowered. The first extraction and irrigation mechanism 10 is connected to the energy supply unit 4 via the first pipeline 5.

[0066] The second inflatable packer device 14 is arranged at both ends of the second production and irrigation mechanism 13 , and the second production and irrigation mechanism 13 and the second inflatable packer device 14 are arranged in the second production and irrigation well 12 in a liftable manner; the second production and irrigation mechanism 13 is connected to the energy supply unit 4 via the second pipeline 6 .

[0067] exist Figure 2In the groundwater stratified energy storage system shown, the first extraction and irrigation well 9 and the second extraction and irrigation well 12 are the main channels for groundwater extraction and irrigation operations. They are respectively connected to different aquifers, so that the extraction and irrigation unit 1 can switch the aquifers for groundwater extraction and irrigation as needed, so as to achieve the purpose of cross-seasonal stratified energy storage. The first extraction and irrigation mechanism 10 and the second extraction and irrigation mechanism 13 are the core components for performing groundwater extraction and irrigation operations. They are responsible for extracting and recharging groundwater from the first extraction and irrigation well 9 and the second extraction and irrigation well 12, respectively. The working states of these two mechanisms are opposite, that is, when one mechanism is in the pumping state, the other mechanism is in the recharging state, thereby realizing the circulation of groundwater. The output end of the first extraction and irrigation mechanism 10 is connected to the energy supply unit 4 via the first pipeline 5, and the output end of the second extraction and irrigation mechanism 13 is connected to the energy supply unit 4 via the second pipeline 6, so that the groundwater can flow smoothly through the energy supply unit 4 for energy conversion, thereby providing heating or cooling services for the user end. The first pneumatic packer device 11 is arranged at both ends of the first irrigation and extraction mechanism 10, and the second pneumatic packer device 14 is arranged at both ends of the second irrigation and extraction mechanism 13, and its function is to isolate the hydraulic connection between different aquifers and prevent the occurrence of interlayer phenomenon of groundwater during the irrigation and extraction process. The first irrigation and extraction mechanism 10 and the first pneumatic packer device 11, the second irrigation and extraction mechanism 13 and the second pneumatic packer device 14 can all be lifted and lowered in the corresponding irrigation and extraction wells, and the irrigation and extraction unit 1 can adapt to aquifers of different depths, thereby improving the flexibility and adaptability of the system. At the same time, during the irrigation and extraction process, the positions of these components can be adjusted as needed to ensure the accuracy and efficiency of the irrigation and extraction operation.

[0068] In the specific implementation, the first irrigation and extraction mechanism and the second irrigation and extraction mechanism are both provided with: a wellbore, an adjusting mechanism and a fixing device; wherein the wellbore is the main structure of the irrigation and extraction well, and is used to connect the surface and the underground water source. The first inflatable packer device is arranged at both ends of the wellbore in the first irrigation and extraction mechanism, and the second inflatable packer device is arranged at both ends of the wellbore in the second irrigation and extraction mechanism. The adjusting mechanism is used to adjust the height of the wellbore. The adjusting mechanism may include mechanical devices such as electric telescopic rods, hydraulic cylinders, screw nut pairs, and power sources such as motors and hydraulic pumps that drive these mechanical devices. By controlling the output of the power source, the mechanical devices in the adjusting mechanism are driven to move, thereby changing the height of the wellbore. The fixing device is used to ensure the stability of the wellbore after the height is adjusted. The fixing device may include anchors, support frames, fasteners, etc. Anchors are usually used to firmly fix the wellbore in the underground rock formation; the support frame is used to provide additional support for the wellbore on the surface; and the fasteners are used to connect and fix the various components between the wellbore and the adjusting mechanism.

[0069] In one possible implementation, see Figure 3 As shown, the monitoring unit 3 includes: an aquifer monitoring subunit 15; the aquifer monitoring subunit 15 is in communication connection with the terminal control unit 2;

[0070] The aquifer monitoring subunit 15 is used to collect aquifer monitoring data at the connection between each aquifer in the near-surface aquifer 8 and the far-surface aquifer 7 and the first production and irrigation well 9 and the second production and irrigation well 12, and send the aquifer monitoring data to the terminal control unit 2; wherein the aquifer monitoring data includes at least one of settlement data, geothermal data and water level data.

[0071] exist Figure 3 In the groundwater stratified energy storage system shown, the settlement data refers to the settlement amount of each aquifer measured by the settlement sensor due to water level changes or other geological activities. A settlement sensor is buried above the connection between each aquifer and the first extraction and irrigation well 9 and the second extraction and irrigation well 12. The settlement data includes the settlement amount at the connection between each aquifer and the first extraction and irrigation well 9 and the settlement amount at the connection between the second extraction and irrigation well 12. The geothermal data is the temperature of each aquifer measured by the geothermal sensor. The geothermal sensor can be a thermocouple sensor or a thermistor sensor. A geothermal sensor is provided at the connection between each aquifer and the first extraction and irrigation well 9 and the second extraction and irrigation well 12. The geothermal data includes the temperature at the connection between each aquifer and the first extraction and irrigation well 9 and the temperature at the connection between the second extraction and irrigation well 12. The water level data is the water level height of each aquifer measured by the water level sensor. The water level sensor can be a pressure sensor or an ultrasonic sensor. The pressure sensor indirectly calculates the water level by measuring the pressure of the water column, and the ultrasonic sensor measures the water level using the principle of sound wave reflection. A water level sensor is provided at the connection between each aquifer and the first extraction and irrigation well 9 and the second extraction and irrigation well 12 , and the water level data includes the water level at the connection between each aquifer and the first extraction and irrigation well 9 and the water level at the connection between the second extraction and irrigation well 12 .

[0072] In one possible implementation, see Figure 3 As shown, the monitoring unit 3 further includes: a pipeline monitoring subunit 16; the pipeline monitoring subunit 16 is communicatively connected with the terminal control unit 2;

[0073] The pipeline monitoring subunit 16 is used to collect pipeline monitoring data of the first pipeline 5 and the second pipeline 6 respectively, and send the pipeline monitoring data to the terminal control unit 2; wherein the pipeline monitoring data includes at least one of flow data, water temperature data and pressure data.

[0074] exist Figure 3In the shown groundwater stratified energy storage system, the flow data is the flow of the first pipeline 5 and the flow of the second pipeline 6 detected by the flow sensor. The flow sensor can be an electromagnetic flowmeter, a turbine flowmeter or an ultrasonic flowmeter. The straight pipe section of the first pipeline 5 and the straight pipe section of the second pipeline 6 are respectively provided with flow sensors. The temperature data is the temperature of the first pipeline 5 and the temperature of the second pipeline 6 detected by the temperature sensor. The temperature sensor can be a thermal resistor sensor or a thermocouple sensor. The straight pipe section of the first pipeline 5 and the position close to the first irrigation and extraction mechanism 10 are provided with a temperature sensor. Symmetrically, the straight pipe section of the second pipeline 6 and the position close to the second irrigation and extraction mechanism 13 are provided with a temperature sensor. The pressure data is the pressure of the first pipeline 5 and the pressure of the second pipeline 6 detected by the pressure sensor. The pressure sensor can be a piezoresistive pressure sensor or a piezoelectric pressure sensor. The straight pipe section of the first pipeline 5 and the position close to the first irrigation and extraction mechanism 10 are provided with a pressure sensor. Symmetrically, the straight pipe section of the second pipeline 6 and the position close to the second irrigation and extraction mechanism 13 are provided with a pressure sensor.

[0075] In a possible implementation manner, when controlling the irrigation unit to perform irrigation in the same layer through the aquifer corresponding to the working mode, the terminal control unit is specifically used to:

[0076] When the working mode of the irrigation unit is the heating mode, the temperature of each remote surface aquifer is obtained, and the irrigation unit is controlled to irrigate the same layer through the remote surface aquifer with the highest temperature;

[0077] When the working mode of the irrigation and sampling unit is the cooling mode, the temperature of each near-surface aquifer is obtained, and the irrigation and sampling unit is controlled to perform irrigation and sampling in the same layer through the near-surface aquifer with the lowest temperature.

[0078] In practical applications, in the heating mode, the terminal control unit first obtains the temperature data of each remote surface aquifer through the monitoring unit. These temperature data are collected in real time by the geothermal sensors arranged in the remote surface aquifer and transmitted to the terminal control unit by wired or wireless means. The terminal control unit analyzes the received temperature data to determine the remote surface aquifer with the highest temperature. Since the temperature of groundwater is relatively stable and warm in winter and cool in summer, the remote surface aquifer with the highest temperature can provide more heat energy in the heating mode. According to the analysis results of the temperature data, the terminal control unit controls the irrigation unit to irrigate the same layer through the remote surface aquifer with the highest temperature. Specifically, the first irrigation mechanism (or the second irrigation mechanism) is controlled to extract groundwater from the aquifer and transport it to the energy supply unit through the pipeline for heat extraction and heating. At the same time, the second irrigation mechanism (or the first irrigation mechanism) is controlled to recharge the groundwater into the aquifer to ensure the recycling of groundwater and the stable operation of the system.

[0079] Similarly, in the cooling mode, the terminal control unit obtains the temperature data of each near-surface aquifer through the monitoring unit. These temperature data are also collected in real time by the geothermal sensors arranged in the near-surface aquifer and transmitted to the terminal control unit. The terminal control unit analyzes the received temperature data to determine the near-surface aquifer with the lowest temperature. The near-surface aquifer with the lowest temperature can provide more cold energy in the cooling mode. According to the analysis results of the temperature data, the terminal control unit controls the irrigation unit to irrigate the same layer through the near-surface aquifer with the lowest temperature. Similar to the heating mode, the first irrigation mechanism (or the second irrigation mechanism) is controlled to extract groundwater from the aquifer and transport it to the energy supply unit through the pipeline for heat extraction and heating. At the same time, the second irrigation mechanism (or the first irrigation mechanism) is controlled to recharge the groundwater into the aquifer to ensure the recycling of groundwater and the stable operation of the system.

[0080] In this way, the groundwater stratified energy storage system can achieve efficient and stable operation in heating mode and cooling mode, making full use of the temperature characteristics of the aquifer, and selecting the optimal aquifer for extraction and irrigation through precise temperature monitoring and analysis, thereby improving the energy efficiency and reliability of the system. At the same time, by introducing a temperature control mechanism, the groundwater stratified energy storage system can more flexibly adapt to energy needs in different seasons and climate conditions, and improve the system's heat supply and exchange capacity, heating energy efficiency and adaptability.

[0081] In a possible implementation manner, when determining an idle aquifer as a target aquifer and controlling the irrigation unit to perform heterogeneous irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is specifically used to:

[0082] From the aquifers in the idle state, determine an aquifer that meets a first condition as a target aquifer; wherein the first condition is that the temperature difference between the aquifers corresponding to the working mode is the smallest;

[0083] The irrigation unit is controlled to perform different-layer irrigation in the opposite direction to the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0084] In actual applications, when confirming that the groundwater stratified energy storage system is in the preset system operation state, the terminal control unit first identifies the aquifers in an idle state. These aquifers are not currently used by the irrigation unit and have sufficient storage and recharge capacity. Next, the terminal control unit calculates the temperature difference between the idle aquifer and the aquifer corresponding to the current working mode, and determines the idle aquifer with the smallest temperature difference with the aquifer in the current working mode to ensure that the energy loss is minimized during the heterogeneous irrigation process, and fully considers the temperature distribution characteristics of the groundwater layer and the energy efficiency requirements of the system. Based on the analysis results of the temperature difference data, the terminal control unit determines the aquifer that meets the first condition as the target aquifer, and the terminal control unit controls the irrigation unit to perform heterogeneous irrigation operations in the opposite direction of the same-layer irrigation. Specifically, if the current working mode is the heating mode, the first irrigation mechanism extracts groundwater from the remote surface aquifer and controls the second irrigation mechanism to recharge the groundwater into the remote surface aquifer. When the different layers are irrigated, the terminal controls the second irrigation mechanism to extract groundwater from the target aquifer and controls the first irrigation mechanism to recharge the groundwater into the remote surface aquifer. If the current working mode is the heating mode, the second irrigation mechanism extracts groundwater from the remote surface aquifer and controls the first irrigation mechanism to recharge the groundwater into the remote surface aquifer. When the different layers are irrigated, the terminal controls the first irrigation mechanism to extract groundwater from the target aquifer and controls the second irrigation mechanism to recharge the groundwater into the remote surface aquifer. The operating principle in the corresponding cooling mode is the same.

[0085] In addition, during the process of different-layer extraction and irrigation, the terminal control unit is also responsible for monitoring and managing the energy flow of the entire system. By real-time monitoring of parameters such as temperature, pressure, flow rate and reinjection efficiency of each aquifer, the extraction and reinjection rates of the extraction and irrigation units are adjusted to ensure that the energy efficiency of the system is maximized in different working modes.

[0086] In a possible implementation manner, after controlling the irrigation unit to perform different-layer irrigation in the opposite direction of the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is further used to:

[0087] After a preset time, the irrigation unit is controlled to perform different-layer irrigation in the same irrigation direction as the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0088] In actual application, after the preset time, the terminal control unit adjusts the operation of the irrigation unit again, so that it performs different-layer irrigation between the aquifer corresponding to the working mode and the target aquifer, but the irrigation direction this time is opposite to the original different-layer irrigation direction and the same as the same-layer irrigation direction. That is, the original different-layer irrigation is to control the second irrigation mechanism to extract groundwater from the target aquifer and control the first irrigation mechanism to recharge the groundwater to the remote surface aquifer. After the preset time, the first irrigation mechanism is controlled to extract groundwater from the remote surface aquifer and the second irrigation mechanism is controlled to recharge the groundwater to the target aquifer. In this way, it can be ensured that the water level difference between the aquifers is kept within a safe range, thereby avoiding problems such as layer collapse caused by excessive pumping. The determination of the preset time needs to be determined by combining multiple factors such as the characteristics of the groundwater system, monitoring data, management objectives, and historical experience. Through scientific and reasonable preset time settings, it can be ensured that the operation of the irrigation unit can both effectively manage groundwater resources and avoid potential risks.

[0089] like Figure 4-Figure 6 As shown, taking the case where the current working mode is the heating mode as an example, in the same-layer irrigation stage: the first irrigation mechanism 10 extracts groundwater from the remote surface aquifer A, and controls the second irrigation mechanism 13 to recharge the groundwater into the remote surface aquifer A; in this stage, the irrigation direction is that the first irrigation mechanism 10 extracts groundwater and flows to the second irrigation mechanism 13. In the first different-layer irrigation stage: the second irrigation mechanism 13 extracts groundwater from the target aquifer B, and controls the first irrigation mechanism 10 to recharge the groundwater into the remote surface aquifer A; in this stage, the irrigation direction is that the second irrigation mechanism 13 extracts groundwater and flows to the first irrigation mechanism 10. In the second different-layer irrigation stage: the first irrigation mechanism 10 extracts groundwater from the remote surface aquifer A, and controls the second irrigation mechanism 13 to recharge the groundwater into the target aquifer B. In this stage, the irrigation direction is that the first irrigation mechanism 10 extracts groundwater and flows to the second irrigation mechanism 13.

[0090] In one possible implementation, see Figure 7 As shown, the groundwater stratified energy storage system further includes: a light energy storage unit 17; the light energy storage unit 17 is arranged on the first pipeline 5; the working mode also includes a compensation energy storage mode;

[0091] The terminal control unit 2 is used to control the irrigation unit 1 to perform same-layer irrigation and extraction in turn through the corresponding far-surface aquifer 7 or near-surface aquifer 8 according to the aquifer compensation sequence when the working mode is the compensation energy storage mode, so that groundwater flows through the first pipeline 5, the light energy storage unit 17, the energy supply unit 4 and the second pipeline 6;

[0092] The light energy storage unit 17 is used to convert light energy into heat energy to heat the groundwater flowing through the first pipeline 5 .

[0093] In practical applications, the light energy storage unit 17 of the groundwater stratified energy storage system is arranged on the first pipeline 5, which is responsible for converting light energy into heat energy, heating the groundwater flowing through the pipeline, providing additional energy input for the system, and enhancing the flexibility and efficiency of the system. In addition to heating in winter and cooling in summer, the system can also set a compensation energy storage mode to efficiently convert light energy into heat energy under sufficient light conditions in the remaining time and store it in groundwater. This not only improves the energy efficiency of the system, but also reduces dependence on traditional energy. Specifically, when the system selects the compensation energy storage mode, the terminal control unit 2 controls the irrigation unit 1 to perform the same-layer irrigation in the corresponding far-surface aquifer 7 or near-surface aquifer 8 in accordance with the aquifer compensation order, and the groundwater will flow through the first pipeline 5, the light energy storage unit 17, the energy supply unit 4 and the second pipeline 6 to form a complete circulation loop. In this process, the light energy storage unit 17 heats the groundwater flowing through, thereby increasing the thermal energy content of the groundwater.

[0094] In a possible implementation manner, the working mode further includes a groundwater balance mode, and the terminal control unit is further configured to:

[0095] Count the total extraction and total recharge of each aquifer within a preset time period;

[0096] When the difference between the total extraction volume and the total recharge volume is greater than a preset threshold, the extraction and recharge mechanism is controlled to replenish water to the aquifer.

[0097] In specific implementation, the preset duration can be set according to actual needs and can be set to one month. The difference between the total extraction and the total recharge is greater than the preset threshold, which corresponds to the situation where the total extraction is much greater than the total recharge. At this time, the terminal control unit can control the collection and irrigation mechanism to strengthen recharge and replenishment, such as using rainwater, water obtained from wastewater treatment and reuse, or using other unused or high-water-content aquifers for replenishment, so as to increase the recharge of groundwater, balance the extraction and recharge, and reduce the risk of groundwater level decline.

[0098] Based on the same inventive concept, the present application also provides a groundwater stratified energy storage method, which is applied to the terminal control unit in the above-mentioned groundwater stratified energy storage system. Figure 8 As shown, the general process of the groundwater stratified energy storage method provided in the embodiment of the present application is as follows:

[0099] Step 801: Obtain the geographical location and time of irrigation.

[0100] Step 802: Determine the working mode of the irrigation unit according to the geographical location and time of irrigation; wherein the working mode includes a heating mode and a cooling mode.

[0101] Step 803: Control the irrigation unit to perform same-layer irrigation through the aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is a far-surface aquifer, and the aquifer corresponding to the cooling mode is a near-surface aquifer.

[0102] Step 804: Receive operating data of the groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine an idle aquifer as a target aquifer, and control the irrigation and extraction unit to perform heterogeneous irrigation and extraction through the aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency; and the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data.

[0103] In a possible implementation, the irrigation unit is controlled to perform irrigation in the same layer through the aquifer corresponding to the working mode, which may be implemented in the following manners, but not limited to:

[0104] When the working mode of the irrigation unit is the heating mode, the temperature of each remote surface aquifer is obtained, and the irrigation unit is controlled to irrigate the same layer through the remote surface aquifer with the highest temperature;

[0105] When the working mode of the irrigation and sampling unit is the cooling mode, the temperature of each near-surface aquifer is obtained, and the irrigation and sampling unit is controlled to perform irrigation and sampling in the same layer through the near-surface aquifer with the lowest temperature.

[0106] In a possible implementation, an idle aquifer is determined as a target aquifer, and the irrigation unit is controlled to perform heterogeneous irrigation through the aquifer corresponding to the working mode and the target aquifer, which may be implemented in the following manners but not limited to:

[0107] First, from the aquifers in an idle state, an aquifer that meets a first condition is determined as a target aquifer; wherein the first condition is that the temperature difference between the aquifers corresponding to the working mode is the smallest.

[0108] Then, the irrigation unit is controlled to perform different-layer irrigation in the opposite direction to the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0109] In a possible implementation manner, after controlling the irrigation unit to perform different-layer irrigation in the opposite direction of the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer, the method further includes:

[0110] After a preset time, the irrigation unit is controlled to perform different-layer irrigation in the same irrigation direction as the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

[0111] In a possible implementation manner, the working mode further includes a compensation energy storage mode, and the method further includes:

[0112] When the working mode is the compensation energy storage mode, the irrigation and extraction unit is controlled to irrigate the same layer of the corresponding far-surface aquifer or near-surface aquifer in turn according to the aquifer compensation order, so that the groundwater flows through the first pipeline, the solar energy storage unit, the energy supply unit and the second pipeline, so that the solar energy storage unit heats the groundwater flowing through the first pipeline.

[0113] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0114] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0115] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0116] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0117] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A groundwater stratified energy storage system, characterized in that: include: Collection and irrigation unit, terminal control unit, monitoring unit and energy supply unit; The terminal control unit is respectively connected to the control end of the irrigation unit and the monitoring unit for communication; The first end of the irrigation unit is connected to the first end of the energy supply unit via a first pipeline, and the second end of the irrigation unit is connected to the second end of the energy supply unit via a second pipeline; The terminal control unit is used to obtain the geographical location and time of irrigation and extraction; determine the working mode of the irrigation unit according to the geographical location and time of irrigation and extraction; wherein the working mode includes a heating mode and a cooling mode; control the irrigation unit to perform same-layer irrigation through the aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is a far-surface aquifer, and the aquifer corresponding to the cooling mode is a near-surface aquifer; receive the operating data of the groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine the aquifer in an idle state as the target aquifer, and control the irrigation unit to perform different-layer irrigation through the aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency; The monitoring unit is used to collect system monitoring data of the groundwater stratified energy storage system and send the operating data to the terminal control unit; wherein the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data; The irrigation unit is used to perform same-layer irrigation or different-layer irrigation under the control of the terminal control unit, so that groundwater flows through the first pipeline, the energy supply unit and the second pipeline; The energy supply unit is used to provide heating or cooling for the user end through the groundwater flowing through it; When determining an idle aquifer as a target aquifer and controlling the irrigation unit to perform heterogeneous irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is specifically used to: From the aquifers in the idle state, determine an aquifer that meets a first condition as a target aquifer; wherein the first condition is that the temperature difference between the aquifers corresponding to the working mode is the smallest; Controlling the irrigation unit to perform different-layer irrigation in the opposite direction of the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer; After controlling the irrigation unit to perform different-layer irrigation in the opposite direction of the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer, the terminal control unit is further used to: After a preset time, the irrigation unit is controlled to perform different-layer irrigation in the same irrigation direction as the same-layer irrigation through the aquifer corresponding to the working mode and the target aquifer.

2. The groundwater stratified energy storage system according to claim 1, characterized in that: The irrigation and extraction unit comprises: a first irrigation and extraction well, a first irrigation and extraction mechanism, a first inflatable packer device, a second irrigation and extraction well, a second irrigation and extraction mechanism, and a second inflatable packer device; the working states of the first irrigation and extraction mechanism and the second irrigation and extraction mechanism are opposite; The first inflatable packer device is arranged at both ends of the first extraction and irrigation mechanism, and the first extraction and irrigation mechanism and the first inflatable packer device are arranged in the first extraction and irrigation well in a manner that they can be lifted and lowered; the first extraction and irrigation mechanism is connected to the energy supply unit via the first pipeline; The second inflatable packer device is arranged at both ends of the second production and irrigation mechanism, and the second production and irrigation mechanism and the second inflatable packer device are arranged in the second production and irrigation well in a liftable manner; the second production and irrigation mechanism is connected to the energy supply unit via the second pipeline.

3. The groundwater stratified energy storage system according to claim 2, characterized in that: The monitoring unit comprises: an aquifer monitoring subunit; the aquifer monitoring subunit is communicatively connected with the terminal control unit; The aquifer monitoring subunit is used to respectively collect aquifer monitoring data at the connection between each aquifer in the near-surface aquifer and the far-surface aquifer and the first production and irrigation well and the second production and irrigation well, and send the aquifer monitoring data to the terminal control unit; wherein the aquifer monitoring data includes at least one of settlement data, geothermal data and water level data.

4. The groundwater stratified energy storage system according to claim 1, characterized in that: The monitoring unit further comprises: a pipeline monitoring subunit; the pipeline monitoring subunit is communicatively connected with the terminal control unit; The pipeline monitoring subunit is used to collect pipeline monitoring data of the first pipeline and the second pipeline respectively, and send the pipeline monitoring data to the terminal control unit; wherein the pipeline monitoring data includes at least one of flow data, water temperature data and pressure data.

5. The groundwater stratified energy storage system according to any one of claims 1 to 4, characterized in that: When controlling the irrigation unit to perform same-layer irrigation through the aquifer corresponding to the working mode, the terminal control unit is specifically used to: When the working mode of the irrigation and extraction unit is the heating mode, the temperature of each of the remote surface aquifers is obtained, and the irrigation and extraction unit is controlled to irrigate the same layer through the remote surface aquifer with the highest temperature; When the working mode of the irrigation and extraction unit is the cooling mode, the temperature of each of the near-surface aquifers is obtained, and the irrigation and extraction unit is controlled to perform irrigation and extraction in the same layer through the near-surface aquifer with the lowest temperature.

6. The groundwater stratified energy storage system according to claim 5, characterized in that: Also includes: A light energy storage unit; the light energy storage unit is arranged on the first pipeline; The light energy storage unit is in communication connection with the terminal control unit; the working mode also includes a compensation energy storage mode; The terminal control unit is used to control the irrigation unit to perform same-layer irrigation and extraction in sequence through the corresponding far-surface aquifer or near-surface aquifer in accordance with the aquifer compensation sequence when the working mode is the compensation energy storage mode, so that groundwater flows through the first pipeline, the solar energy storage unit, the energy supply unit and the second pipeline; The light energy storage unit is used to convert light energy into heat energy to heat the groundwater flowing through the first pipeline.

7. A groundwater stratification energy storage method, characterized in that: A terminal control unit applied to a groundwater stratified energy storage system as claimed in any one of claims 1 to 6 of the present application, wherein the groundwater stratified energy storage method comprises: Get the geographical location and time of irrigation; Determine the working mode of the irrigation unit according to the irrigation geographical location and irrigation time; wherein the working mode includes a heating mode and a cooling mode; Controlling the irrigation unit to perform same-layer irrigation through the aquifer corresponding to the working mode; wherein the aquifer corresponding to the heating mode is a far-surface aquifer, and the aquifer corresponding to the cooling mode is a near-surface aquifer; Receive operating data of the groundwater stratified energy storage system, and when it is determined according to the operating data that the groundwater stratified energy storage system is in a preset system operating state, determine an aquifer in an idle state as a target aquifer, and control the irrigation and extraction unit to perform heterogeneous irrigation and extraction through the aquifer corresponding to the working mode and the target aquifer; wherein the preset system operating state is a system operating state in which the recharge efficiency is lower than the preset efficiency; and the system monitoring data includes aquifer monitoring data and / or pipeline monitoring data.

8. The groundwater stratification energy storage method according to claim 7, characterized in that: The working mode also includes a compensation energy storage mode, and the method further includes: When the working mode is the compensation energy storage mode, the irrigation unit is controlled to irrigate the corresponding far-surface aquifer or near-surface aquifer in the same layer in accordance with the aquifer compensation order, so that the groundwater flows through the first pipeline, the solar energy storage unit, the energy supply unit and the second pipeline, so that the solar energy storage unit heats the groundwater flowing through the first pipeline.

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