Mid-deep geothermal energy coupled with solar heating control system

Abstract

The present invention belongs to the technical field of comprehensive utilization of geothermal energy and solar energy, and specifically discloses a medium-deep geothermal energy coupled with solar energy heating control system, including: a heat output component: including geothermal well heat exchange equipment and solar energy heat collection equipment; a coupled heat storage component: used to couple geothermal energy and solar energy, and a user end: connected to the coupled heat storage component, and the heat flowing into the client end meets the needs of the user end through the control of the coupled heat storage component by a control device. The present invention uses a coupled heat storage component to couple the heat sources of the geothermal well heat exchange equipment and the solar energy heat collection equipment, simulates the heat load of the user end through a control device, and controls the heat production, coupling strategy and pipeline selection strategy based on the total heat load, heat temperature and the control strategy of the user end heat equipment, so as to avoid overcapacity to the greatest extent while ensuring the supply of the user end.

Description

Technical Field

[0001] The present invention belongs to the technical field of comprehensive utilization of geothermal energy and solar energy, and in particular relates to a medium-deep geothermal energy coupled with solar energy heating control system. Background Art

[0002] Medium-deep geothermal energy refers to geothermal energy resources stored at a depth of 2,000 to 3,000 meters underground. This type of geothermal energy has the characteristics of high temperature, good stability, and renewability. It is a very promising clean energy. Solar energy refers to solar radiation energy. Solar energy can be converted into thermal energy through equipment such as solar water heaters for production of domestic hot water, heating and other fields. In order to maximize the use of clean renewable energy, there are more and more examples of the comprehensive utilization of geothermal energy and solar energy.

[0003] For example, a Chinese patent with announcement number CN113819510B discloses a zero-emission heating system that couples medium-deep geothermal energy with solar energy. By connecting the solar thermal collector and the medium-deep underground pipe heat exchange device to the energy-consuming unit respectively, the multi-energy complementarity of solar energy and medium-deep geothermal energy is achieved, and the gradient utilization form is used to maximize the use of heat sources of different temperatures, thereby improving the utilization efficiency. However, in this scheme, the heat production planning of the thermal energy generating equipment is lacking, resulting in the problem of excess heat production. Even if the heat can be stored through heat storage technology, it will still cause heat loss. In addition, in this scheme, the temperature of the output heat source cannot be adjusted, and all temperature requirements cannot be met. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a mid-deep geothermal energy coupled with solar energy heating control system.

[0005] The present invention provides a mid-deep geothermal energy coupled solar energy heating control system, comprising:

[0006] Thermal energy production components: including geothermal well heat exchange equipment and solar thermal equipment;

[0007] A coupled heat storage component: comprising a water storage tank and a regulating mechanism, wherein the water storage tank comprises a first heat source inlet and a second heat source inlet, wherein the geothermal well heat exchange equipment is connected to the first heat source inlet via a geothermal heat exchange pipe, and the solar thermal equipment is connected to the second heat source inlet via a solar energy transmission pipe, and is used to couple the heat source of the geothermal well heat exchange equipment and the heat source of the solar thermal equipment in the water storage tank; the regulating mechanism is arranged between the first heat source inlet and the second heat source inlet, and is used to synchronously adjust the flow opening of the first heat source inlet and the second heat source inlet;

[0008] User end: including heat consumption equipment and heat source consumption equipment, the heat consumption equipment is connected with the water storage tank through a heat exchange pipeline, and the heat source consumption equipment is connected with the water storage tank through a transmission pipeline;

[0009] Controls:

[0010] It includes a heat load simulation module, which is used to simulate the heat load of the user end in a unit time, obtain the heat load parameters of the user end in the unit time, and predict the total heat load, heating temperature and control strategy of the user end heating equipment in the next unit time based on the heat load parameters;

[0011] A control instruction loading module, which loads a first control instruction based on the total heat load, loads a second control instruction based on the heat consumption temperature, and loads a third control instruction based on the regulation strategy of the heat consumption equipment;

[0012] A heat collection control module, connected to the geothermal well heat exchange equipment and the solar energy heat collection equipment, and controlling the heat generation of the heat energy output component based on the first control instruction;

[0013] A flow opening control module, based on the second control instruction, synchronously adjusts the flow openings of different heat source inlets of the water storage tank;

[0014] A heat pipeline control module controls the opening and closing of different heat pipelines based on the third control instruction.

[0015] A further solution is that the heat collection control module includes a first execution unit, a heat loss model and a heat compensation unit;

[0016] The first execution unit is used to control the start and stop of the geothermal well heat exchange equipment and the solar thermal equipment;

[0017] The heat loss model is used to calculate the heat loss of the water tank and the heat loss of the pipeline. The heat loss of the water tank is calculated based on the heat loss of the water tank per unit time, and the heat loss of the pipeline is calculated based on the heat loss of the pipeline per unit length;

[0018] The thermal compensation unit determines the thermal compensation amount through the loss model, and optimizes the heat production of the thermal energy production component in real time based on the thermal compensation amount, wherein the real-time optimization process is: the water storage tank is reversely connected to the geothermal well heat exchange equipment and the solar thermal equipment respectively to form a first compensation pipeline and a second compensation pipeline, and the first compensation pipeline or the second compensation pipeline is selected for heat compensation based on the thermal compensation amount.

[0019] A further solution is that the heat collection control module also includes a channel selection unit, which is used to select the first compensation pipeline or the second compensation pipeline during heat compensation; wherein the selection process is: obtaining the real-time temperatures of the geothermal well heat exchange equipment and the solar energy heat collection equipment, if the real-time temperature of the geothermal well heat exchange equipment is greater than that of the solar energy heat collection equipment, then selecting the first compensation pipeline, if the real-time temperature of the geothermal well heat collection equipment is less than that of the solar energy heat collection equipment, then selecting the second compensation pipeline.

[0020] A further solution is that the flow opening control module includes an opening control model and a second execution unit;

[0021] The establishment process of the opening control model is:

[0022] The required temperature T is set, and the maximum value T1 of the temperature of the geothermal well heat exchange equipment within a unit time and the minimum value T2 of the temperature of the solar thermal equipment within a unit time are obtained, so that when the maximum value T1 of the geothermal well heat exchange equipment temperature is at a fixed opening coefficient K1 at the first heat source inlet and the minimum value T2 of the solar thermal equipment temperature is at a fixed opening coefficient K2 at the second heat source inlet, the output temperature of the water storage tank is equal to the required temperature T;

[0023] Obtain the difference dT1 between the real-time temperature of the geothermal well heat exchange equipment and T1 and the difference dT2 between the real-time temperature of the solar thermal equipment and T2, and obtain a large amount of dT1 and the real-time opening coefficient K of the first heat source inlet A The mapping relationship between dT2 and the real-time opening coefficient K of the second heat source inlet B The mapping relationship is marked by artificial experts, and after marking, dT1 and real-time opening coefficient K A As well as dT2 and real-time opening coefficient K B The neural network units are sequentially input for iterative training; the neural network units are combined to obtain an opening control model so that when dT1 and dT2 are input, the real-time opening coefficient K is output. A and real-time opening coefficient K B , and make the output temperature of the water storage tank equal to the required temperature T;

[0024] Among them, K A +K B =1;

[0025] The second execution unit synchronously adjusts the flow openings of different heat source inlets of the water storage tank based on the opening control model.

[0026] A further solution is that the first heat source inlet and the second heat source inlet are located on both sides of the water storage tank, and the regulating mechanism includes a mounting body, and the mounting body is fixedly arranged between the first heat source inlet and the second heat source inlet;

[0027] A motor is arranged on the top of the mounting body, and a driving gear is connected to the output end of the motor. A screw rod is also arranged on the mounting body, and the top and bottom of the screw rod are respectively fixed by fixing seats, and a driven gear is arranged on the top of the screw rod, and the driven gear is meshed with the driving gear.

[0028] The screw rod has a first thread segment and a second thread segment, the first thread segment and the second thread segment have opposite thread rotation directions, a first slider is arranged on the first thread segment, the first slider is threadedly connected to the first thread segment, and a second slider is arranged on the second thread segment, the second slider is threadedly connected to the second thread segment;

[0029] A rotating rod is provided at the bottom of the mounting body, and the middle part of the rotating rod is rotatably connected to the mounting body through a rotating support, a first push rod is provided at one end of the rotating rod, and a first sealing block is provided on the top of the first push rod for adjusting the opening of the first heat source inlet, and a second push rod is provided at the other end of the rotating rod, and a second sealing block is provided on the top of the second push rod for adjusting the opening of the second heat source inlet;

[0030] A first linkage rod is provided on the first slider, the top of the first linkage rod is connected to the first slider, and the bottom of the first linkage rod is connected to the rotating rod. A second linkage rod is provided on the second slider, the top of the second linkage rod is connected to the second slider, and the bottom of the second linkage rod is connected to the rotating rod. The contact points of the first linkage rod and the second linkage rod with the rotating rod are symmetrical along the rotating support.

[0031] A further solution is that the first heat source inlet and the second heat source inlet have the same structure, both of which are T-shaped tube structures, the T-shaped tube structure includes a horizontal tube and a vertical tube connected to the horizontal tube, the horizontal tube is connected to the water storage tank, the top of the vertical tube is used to connect the geothermal heat exchange tube or the solar energy transmission tube, the first sealing block or the second sealing block is arranged inside the vertical tube and is slidably connected to the vertical tube;

[0032] The second execution unit is connected to the motor and based on the K output by the opening control model A and K B Control the motor to rotate, drive the first slider and the second slider to move toward or away from each other, and then drive the first sealing block or the second sealing block to slide in the vertical tube, so that the K A Adjust the first heat source inlet opening, based on K B Adjust the opening of the second heat source inlet.

[0033] A further solution is that a first partition plate and a second partition plate are respectively provided on both sides of the water tank, the first partition plate is used to divide the first heat source inlet into two channels, one of which is connected to a first Tesla valve through a first mixing tube; the second partition plate is used to divide the second heat source inlet into two channels, one of which is provided with a second Tesla valve through a second mixing tube, and the outlet ends of the first Tesla valve and the second Tesla valve are both inclined toward the bottom of the water tank.

[0034] A further solution is that an evaporator and a condenser are sequentially arranged on the heat exchange pipeline along the liquid flow direction, and the condenser supplies heat to the heat consuming equipment through a circulating heat pump circulation; the evaporator is connected to the condenser to transfer the absorbed heat to the condenser as a heat source.

[0035] A further solution is that the heat pipeline control module is connected to the heat exchange pipeline and the delivery pipeline respectively, and controls the on and off of the heat exchange pipeline and the delivery pipeline based on the regulation strategy of the user-side heat-using equipment.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] (1) The present invention uses a coupled heat storage component to couple the heat sources of the geothermal well heat exchange equipment and the solar thermal equipment, simulates the heat load at the user end through a control device, and controls the heat production, coupling strategy and pipeline selection strategy based on the total heat load, heating temperature and the control strategy of the user end heating equipment, so as to avoid overcapacity to the greatest extent while ensuring the supply at the user end.

[0038] (2) Since heat energy will cause heat loss in the water tank and pipeline transportation process, in order to accurately calculate the heat generation, this application determines the heat compensation amount through the heat loss model to ensure the heat demand at the user end.

[0039] (3) The present invention accurately controls the opening of the first heat source inlet and the second heat source inlet through the opening control model. In the process of establishing the opening control model, the fixed opening of the first heat source inlet and the second heat source inlet is first determined based on the required temperature, the temperature of the geothermal well heat exchanger and the temperature of the solar thermal equipment. Since the temperature of the geothermal well heat exchanger and the temperature of the solar thermal equipment are both variables within a period of time, they may increase or decrease. In order to further reduce the error, the present invention selects the maximum value of the geothermal well heat exchanger temperature within a period of time and the minimum value of the solar thermal equipment temperature within a period of time to constrain the fixed opening of the first heat source inlet and the second heat source inlet. When the temperature changes, the temperature of the geothermal well heat exchanger can only decrease, and the temperature of the solar thermal equipment can only increase. The range of variation of the variables is reduced, which facilitates better control of the heat source opening.

[0040] (4) Since the temperature of the geothermal well heat exchange equipment can only be reduced, and the temperature of the solar thermal equipment can only be increased, when adjusting the openings of the two heat source inlets, the opening sizes are adjusted in a trade-off manner. Based on this, the present invention uses a motor to simultaneously adjust the positions of the first sealing block and the second sealing block. For example, when the temperature of the geothermal well heat exchange equipment decreases, in order to ensure the temperature requirements of the user end, it is necessary to reduce the opening of the first heat source inlet, that is, K A Reduce, K B Increase, at this time, the motor drives the first slider to move upward and drives the second slider to move downward, so that the rotating rod rotates clockwise, and then drives the first sealing block to move upward to reduce the opening of the first heat source inlet.

[0041] (5) Since there is a temperature difference between the heat sources entering the water tank from the first heat source inlet and the second heat source inlet, in order to improve the parameter accuracy of the temperature sensor in the water tank, the two heat sources need to be quickly merged. Therefore, the present invention sets a first Tesla valve and a second Tesla valve inside the water tank, and the outlet ends of the first Tesla valve and the second Tesla valve are both inclined toward the bottom of the water tank. The heat source accelerated by the Tesla valve has a greater flow rate, which improves the fusion speed of heat sources with different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following drawings are only used to illustrate and explain the present invention, and are not used to limit the scope of the present invention, wherein:

[0043] Figure 1 : Schematic diagram of the connection structure of the present invention;

[0044] Figure 2 : Schematic diagram of compensation pipeline setting position;

[0045] Figure 3 :Schematic diagram of the regulatory agency structure;

[0046] Figure 4 : Schematic diagram of the regulatory structure regulation process;

[0047] Figure 5 :Control device principle block diagram;

[0048] Figure 6 : Schematic diagram of control principle of heat collection control module;

[0049] Figure 7 : Schematic diagram of control principle of flow opening control module;

[0050] Figure 8 : Schematic diagram of control principle using heat pipeline control module;

[0051] In the figure: 1, geothermal well heat exchange equipment; 2, coupled heat storage component; 3, user end; 4, solar thermal equipment; 5, control device; 6, water storage tank; 7, geothermal heat exchange pipe; 8, solar energy delivery pipe; 9, motor; 10, driving gear; 11, driven gear; 12, screw rod; 13, first threaded section; 14, second threaded section; 15, fixed seat; 16, first slider; 17, second slider; 18, first linkage rod; 19, second linkage rod; 20, rotating rod; 21, rotating support; 22, first push rod; 23, first sealing block; 24, second push rod; 25, second sealing block; 26, first heat source inlet; 27, second heat source inlet; 28, first partition plate; 29, second partition plate; 30, first mixing tube; 31, second mixing tube; 32, first Tesla valve; 33, second Tesla valve; 34, heat exchanger; 35, heat exchange pipeline; 36 , transmission pipeline; 37, heat source consumption equipment; 38, heat consumption equipment; 39, first compensation pipeline; 40, second compensation pipeline; 41, first flow meter; 42, first solenoid valve; 43, second flow meter; 44, second solenoid valve; 45, temperature sensor; 46, third flow meter; 47, third solenoid valve; 48, fourth flow meter; 49, fourth solenoid valve; 50, fifth flow meter; 51, fifth solenoid valve; 52, sixth flow meter; 53, sixth solenoid valve; 54, evaporator; 55, condenser; 56, limit block; 57, circulating heat pump; 58, heat load simulation module; 59, control instruction loading module; 60, heat collection control module; 61, flow opening control module; 62, heat pipeline control module; 63, heat loss model; 64, thermal compensation unit; 65, first execution unit; 66, opening control model; 67, second execution unit. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention is further described in detail by specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] like Figure 1 and Figure 5 As shown, the present invention provides a mid-deep geothermal energy coupled solar energy heating control system, comprising:

[0054] Thermal energy production components: including geothermal well heat exchange equipment 1 and solar thermal equipment 4;

[0055] The coupled heat storage component 2 includes a water tank 6 and a regulating mechanism. The water tank 6 includes a first heat source inlet 26 and a second heat source inlet 27. The geothermal well heat exchange device 1 is connected to the first heat source inlet 26 through a geothermal heat exchange pipe 7, and the solar thermal equipment 4 is connected to the second heat source inlet 27 through a solar energy delivery pipe 8, which is used to couple the heat source of the geothermal well heat exchange device 1 and the heat source of the solar thermal equipment 4 in the water tank 6; the regulating mechanism is arranged between the first heat source inlet 26 and the second heat source inlet 27, and is used to synchronously adjust the flow opening of the first heat source inlet 26 and the second heat source inlet 27;

[0056] User end 3: includes a heat consumption device 38 and a heat source consumption device 37, wherein the heat consumption device 38 is connected to the water storage tank 6 via a heat exchange pipeline 35, and the heat source consumption device 37 is connected to the water storage tank 6 via a delivery pipeline 36;

[0057] The control device 5 includes a heat load simulation module 58, which is used to simulate the heat load of the user end 3 in a unit time, obtain the heat load parameters of the user end 3 in the unit time, and predict the total heat load, heating temperature and the control strategy of the heat-using equipment of the user end 3 in the next unit time based on the heat load parameters; the heat load simulation module 58 here is a prediction module based on big data, which obtains the total heat load, heating temperature and the control strategy of the heat-using equipment in a unit of a community or a community or an industrial park through big data push, wherein the control strategy of the heat-using equipment is a selection strategy of the heat consumption equipment 38 or the heat source consumption equipment 37, that is, selecting the heat consumption equipment 38 in a certain time period, selecting the heat source consumption equipment 37 in another time period, etc. In the present application, the heat consumption equipment 38 is a device that exchanges heat with the heat exchanger 34 arranged inside the water storage tank 6 through the heat exchange pipeline 35, such as floor heating equipment, etc., and the heat source consumption equipment 37 is a device that directly obtains hot water from the inside of the water storage tank 6 through the transmission pipeline 36, such as bathing equipment, pipeline heating in industrial parks, etc.

[0058] A control instruction loading module 59 is configured to load a first control instruction based on the total heat load, load a second control instruction based on the heat consumption temperature, and load a third control instruction based on the regulation strategy of the heat consumption device;

[0059] The heat collection control module 60 is connected to the geothermal well heat exchange device 1 and the solar heat collection device 4, and controls the heat production of the heat energy production component based on the first control instruction;

[0060] The flow opening control module 61 synchronously adjusts the flow openings of different heat source inlets of the water storage tank 6 based on the second control instruction;

[0061] The heat pipeline control module 62 controls the opening and closing of different heat pipelines based on the third control instruction.

[0062] like Figure 2 As shown, in order to enable the control device 5 to better control the heat generation and each control pipeline, in this embodiment, multiple flow meters and solenoid valves are set. The flow meter can be used to monitor the heat source flow on each pipeline. By connecting the solenoid valve with the control device 5, the on-off of the pipeline can be intelligently controlled. Specifically, a first flow meter 41 and a first solenoid valve 42 are set on the geothermal heat exchange pipe 7; a second flow meter 43 and a second solenoid valve 44 are set on the solar energy delivery pipe 8; a temperature sensor 45 is also set inside the water storage tank 6 for monitoring the temperature of the coupled heat source; a fifth flow meter 50 and a fifth solenoid valve 51 are set on the heat exchange pipeline 35; and a sixth flow meter 52 and a sixth solenoid valve 53 are set on the delivery pipeline 36.

[0063] like Figure 6 As shown, the heat collection control module 60 includes a first execution unit 65, a heat loss model 63 and a heat compensation unit 64; the first execution unit 65 is used to control the start and stop of the geothermal well heat exchange equipment 1 and the solar energy heat collection equipment 4; the heat loss model 63 is used to calculate the heat loss of the water tank 6 and the heat loss of the pipeline, the heat loss of the water tank 6 is calculated based on the heat loss of the water tank 6 per unit time, and the heat loss of the pipeline is calculated based on the heat loss per unit length of the pipeline; the heat loss of the water tank 6 can be calculated by the storage time of the heat source in the water tank 6, and the heat loss of the pipeline can be calculated by the length of the pipeline, and the sum of the two is the total heat loss. The thermal compensation unit 64 determines the thermal compensation amount through the loss model, and optimizes the heat production of the thermal energy production component in real time based on the thermal compensation amount, wherein the real-time optimization process is: the water storage tank 6 is reversely connected to the geothermal well heat exchange equipment 1 and the solar thermal equipment 4 respectively to form a first compensation pipeline 39 and a second compensation pipeline 40, and the first compensation pipeline 39 or the second compensation pipeline 40 is selected for heat compensation based on the thermal compensation amount, and a third flow meter 46 and a third solenoid valve 47 are arranged on the first compensation pipeline 39, and a fourth flow meter 48 and a fourth solenoid valve are arranged on the second compensation pipeline 40.

[0064] In the above, the heat collection control module 60 also includes a channel selection unit, which is used to select the first compensation pipeline 39 or the second compensation pipeline 40 during heat compensation; wherein the selection process is: obtaining the real-time temperatures of the geothermal well heat exchange equipment 1 and the solar thermal equipment 4, if the real-time temperature of the geothermal well heat exchange equipment 1 is greater than that of the solar thermal equipment 4, then the first compensation pipeline 39 is selected, if the real-time temperature of the geothermal well heat exchange equipment is less than that of the solar thermal equipment 4, then the second compensation pipeline 40 is selected.

[0065] like Figure 7As shown, the flow opening control module 61 includes an opening control model 66 and a second execution unit 67; the establishment process of the opening control model 66 is: setting the required temperature T, and obtaining the maximum value T1 of the temperature of the geothermal well heat exchange device 1 within a unit time and the minimum value T2 of the temperature of the solar thermal equipment 4 within a unit time, so that when the maximum value T1 of the temperature of the geothermal well heat exchange device 1 is at the fixed opening coefficient K1 of the first heat source inlet 26 and the minimum value T2 of the temperature of the solar thermal equipment 4 is at the fixed opening coefficient K2 of the second heat source inlet 27, the output temperature of the water storage tank 6 is equal to the required temperature T; obtaining the difference dT1 of the real-time temperature of the geothermal well heat exchange device 1 and T1 and the difference dT2 of the real-time temperature of the solar thermal equipment 4 and T2, obtaining a large number of dT1 and the real-time opening coefficient K of the first heat source inlet 26. A The mapping relationship between dT2 and the real-time opening coefficient K of the second heat source inlet 27 B The mapping relationship is marked by artificial experts, and after marking, dT1 and real-time opening coefficient K A As well as dT2 and real-time opening coefficient K B The neural network units are sequentially input to different neural network units for iterative training; the neural network units are combined to obtain the opening control model 66, so that when dT1 and dT2 are input, the real-time opening coefficient K is output. A and real-time opening coefficient K B , and make the output temperature of the water storage tank 6 equal to the required temperature T; where K A +K B =1; the second execution unit 67 synchronously adjusts the flow opening of different heat source inlets of the water tank 6 based on the opening control model. In this embodiment, the neural network unit uses Dual Input Neural Networks (DI-NNs), which is capable of processing two different types of input data. These two types of input data can be data with different feature dimensions or different properties. The model will jointly process and analyze these two inputs to obtain the final output. Corresponding to this application, dT1 and the real-time opening coefficient K are respectively input into the neural network unit. A As well as dT2 and real-time opening coefficient K B Perform iterative training to obtain K corresponding to input dT1 A and K corresponding to dT2 B By combining these two inputs, K based on dT1 and dT2 can be determined. A and K B , which can satisfy the requirement that the output temperature of the water storage tank 6 can reach the required temperature under different dT1 and dT2.

[0066] In this process, by setting the required temperature T, the maximum value T1 of the temperature of the geothermal well heat exchanger 1 within a unit time, and the minimum value T2 of the temperature of the solar thermal equipment 4 within a unit time, the fixed opening coefficient K1 of the first heat source inlet 26 and the fixed opening coefficient K2 of the second heat source inlet 27 can be selected according to T1 and T2, and K1 and K2 are used as the initial opening coefficients to adjust the opening of the first heat source inlet 26 and the second heat source inlet 27. In actual use, the heat generation temperature of both the geothermal well heat exchanger 1 and the solar thermal equipment 4 cannot be constant. Therefore, in order to reduce the number of variables, in this embodiment, when setting K1 and K2, the maximum or minimum temperature of the geothermal well heat exchanger 1 and the solar thermal equipment 4 in a period of time is selected. In this embodiment, the maximum value T1 of the temperature of the geothermal well heat exchanger 1 is selected. In theory, in a unit time, the change in the temperature of the geothermal well heat exchanger 1 will only be less than T1, thereby reducing the number of variables.

[0067] Continue to refer to Figure 1 , the first heat source inlet 26 and the second heat source inlet 27 are located on both sides of the water storage tank 6, and the regulating mechanism includes a mounting body, which is fixedly arranged between the first heat source inlet 26 and the second heat source inlet 27; Figure 3As shown, a motor 9 is arranged on the top of the mounting body, and a driving gear 10 is connected to the output end of the motor 9. A screw rod 12 is also arranged on the mounting body, and the top and bottom of the screw rod 12 are respectively fixed by a fixing seat 15. In this embodiment, a bearing is arranged inside the fixing seat 15, and the inner ring of the bearing is interference fit with the screw rod 12, and the outer ring of the bearing is interference fit with the fixing seat 15. A driven gear 11 is arranged on the top of the screw rod 12, and the driven gear 11 is meshed with the driving gear; a first thread segment 13 and a second thread segment 14 are threaded on the screw rod 12, and the thread rotation directions of the first thread segment 13 and the second thread segment 14 are opposite, and a limiting block 56 is also arranged at the bottom of the first thread segment 13 and the top of the second thread segment 14, and a first slider 16 is arranged on the first thread segment 13, and the first slider 16 is threadedly connected to the first thread segment 13, and a second slider 17 is arranged on the second thread segment 14, and the second slider 17 is threadedly connected to the second thread segment 14 A rotating rod 20 is provided at the bottom of the mounting body, and the middle part of the rotating rod 20 is rotatably connected to the mounting body through a rotating support 21; a first push rod 22 is provided at one end of the rotating rod 20, and a first sealing block 23 is provided at the top of the first push rod 22 for adjusting the opening of the first heat source inlet 26; a second push rod 24 is provided at the other end of the rotating rod 20, and a second sealing block 25 is provided at the top of the second push rod 24 for adjusting the opening of the second heat source inlet 27; a first linkage rod 18 is provided on the first slider 16, the top of the first linkage rod 18 is connected to the first slider 16, and the bottom of the first linkage rod 18 is connected to the rotating rod 20; a second linkage rod 19 is provided on the second slider 17, the top of the second linkage rod 19 is connected to the second slider 17, and the bottom of the second linkage rod 19 is connected to the rotating rod 20, and the contact points of the first linkage rod 18 and the second linkage rod 19 with the rotating rod 20 are symmetrical along the rotating support 21. In this embodiment, the first heat source inlet 26 and the second heat source inlet 27 have the same structure, both of which are T-shaped tube structures. The T-shaped tube structure includes a horizontal tube and a vertical tube connected to the horizontal tube. The horizontal tube is connected to the water storage tank 6. The top of the vertical tube is used to connect the geothermal heat exchange tube 7 or the solar energy transmission tube 8. The first sealing block 23 or the second sealing block 25 is arranged inside the vertical tube and is slidably connected to the vertical tube. The second execution unit 67 is connected to the motor 9, and the K output based on the opening control model is A and K B The motor 9 is controlled to rotate, driving the first slider 16 and the second slider 17 to move toward or away from each other, thereby driving the first sealing block 23 or the second sealing block 25 to slide in the vertical tube, so that the K A Adjust the opening of the first heat source inlet 26 based on K B Adjust the opening of the second heat source inlet 27. Figure 4 As shown, when adjusting the opening of the two heat source inlets, the opening sizes are adjusted in a trade-off manner. Based on this, the present invention uses the motor 9 to simultaneously adjust the positions of the first sealing block 23 and the second sealing block 25. For example, when the temperature of the geothermal well heat exchange device 1 decreases, in order to ensure the temperature requirement of the user end 3, it is necessary to reduce the opening of the first heat source inlet 26, that is, K A Reduce, K B Increase, at this time, the motor 9 drives the first slider 16 to move upward and drives the second slider 17 to move downward. Due to the provision of the first linkage rod 18 and the second linkage rod 19, the rotating rod 20 rotates clockwise; then the first push rod 22 drives the first sealing block 23 to move upward to reduce the opening of the first heat source inlet 26, and the second push rod 24 drives the second sealing block 25 to move downward to increase the opening of the second heat source inlet 27. It should be noted that in the process of the movement of the first sealing block 23 and the second sealing block 25, the vertical tube of the T-tube structure plays a limiting role equivalent to the cylinder barrel. Therefore, the bottoms of the first push rod 22 and the second push rod 24 are respectively hinged to the rotating rod 20 through the hinge seat.

[0068] Since there is a temperature difference between the heat sources entering the water tank 6 from the first heat source inlet 26 and the second heat source inlet 27, in order to improve the parameter accuracy of the temperature sensor 45 in the water tank 6, it is necessary to quickly fuse the two heat sources. In this embodiment, a first partition plate 28 and a second partition plate 29 are respectively provided on both sides of the inside of the water tank 6. The first partition plate 28 is used to divide the first heat source inlet 26 into two channels, and a first Tesla valve 32 is connected to one of the channels through a first mixing tube 30; the second partition plate 29 is used to divide the second heat source inlet 27 into two channels, and a second Tesla valve 33 is provided in one of the channels through a second mixing tube 31. The outlet ends of the first Tesla valve 32 and the second Tesla valve 33 are both inclined toward the bottom of the water tank 6, and the liquid accelerated by the Tesla valve is inclinedly injected into the bottom of the water tank 6, thereby improving the fusion speed of heat sources of different temperatures.

[0069] In order to further improve the utilization efficiency of the heat source, an evaporator 54 and a condenser 55 are sequentially arranged on the heat exchange pipeline 35 along the liquid flow direction. The condenser 55 supplies heat to the heat consuming device 38 through a circulating heat pump 57; the evaporator 54 is connected to the condenser 55 to transfer the absorbed heat to the condenser 55 as a heat source.

[0070] In the above, the heat pipe control module 62 is connected to the heat exchange pipe 35 and the delivery pipe 36 respectively, and controls the on-off of the heat exchange pipe 35 and the delivery pipe 36 based on the control strategy of the heat equipment at the user end 3. Specifically, Figure 8As shown, the heat pipeline control module 62 is connected to the fifth solenoid valve 51 and the sixth solenoid valve 53, and the heat exchange pipeline 35 and the delivery pipeline 36 are controlled by controlling the switch of the solenoid valve.

[0071] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A medium-deep geothermal energy coupled with solar heating control system, characterized in that: include: Thermal energy production components: including geothermal well heat exchange equipment and solar thermal equipment; A coupled heat storage component: comprising a water storage tank and a regulating mechanism, wherein the water storage tank comprises a first heat source inlet and a second heat source inlet, wherein the geothermal well heat exchange equipment is connected to the first heat source inlet via a geothermal heat exchange pipe, and the solar thermal equipment is connected to the second heat source inlet via a solar energy transmission pipe, and is used to couple the heat source of the geothermal well heat exchange equipment and the heat source of the solar thermal equipment in the water storage tank; the regulating mechanism is arranged between the first heat source inlet and the second heat source inlet, and is used to synchronously adjust the flow opening of the first heat source inlet and the second heat source inlet; User end: including heat consumption equipment and heat source consumption equipment, the heat consumption equipment is connected with the water storage tank through a heat exchange pipeline, and the heat source consumption equipment is connected with the water storage tank through a transmission pipeline; Controls: It includes a heat load simulation module, which is used to simulate the heat load of the user end in a unit time, obtain the heat load parameters of the user end in the unit time, and predict the total heat load, heating temperature and control strategy of the user end heating equipment in the next unit time based on the heat load parameters; A control instruction loading module, which loads a first control instruction based on the total heat load, loads a second control instruction based on the heat consumption temperature, and loads a third control instruction based on the regulation strategy of the heat consumption equipment; A heat collection control module, connected to the geothermal well heat exchange equipment and the solar energy heat collection equipment, and controlling the heat generation of the heat energy output component based on the first control instruction; A flow opening control module, based on the second control instruction, synchronously adjusts the flow openings of different heat source inlets of the water storage tank; Control module with heat pipe; Based on the third control instruction, control the opening and closing of different heat pipelines; The flow opening control module includes an opening control model and a second execution unit; The establishment process of the opening control model is: The required temperature T is set, and the maximum value T1 of the temperature of the geothermal well heat exchange equipment within a unit time and the minimum value T2 of the temperature of the solar thermal equipment within a unit time are obtained, so that when the maximum value T1 of the geothermal well heat exchange equipment temperature is at a fixed opening coefficient K1 at the first heat source inlet and the minimum value T2 of the solar thermal equipment temperature is at a fixed opening coefficient K2 at the second heat source inlet, the output temperature of the water storage tank is equal to the required temperature T; Obtain the difference dT1 between the real-time temperature of the geothermal well heat exchange equipment and T1 and the difference dT2 between the real-time temperature of the solar thermal equipment and T2, and obtain a large amount of dT1 and the real-time opening coefficient K of the first heat source inlet A The mapping relationship between dT2 and the real-time opening coefficient K of the second heat source inlet B The mapping relationship is marked by artificial experts, and after marking, dT1 and real-time opening coefficient K A As well as dT2 and real-time opening coefficient K B The neural network units are sequentially input for iterative training; the neural network units are combined to obtain an opening control model so that when dT1 and dT2 are input, the real-time opening coefficient K is output. A and real-time opening coefficient K B , and make the output temperature of the water storage tank equal to the required temperature T; Among them, K A +K B =1; The second execution unit synchronously adjusts the flow openings of different heat source inlets of the water storage tank based on the opening control model.

2. The mid-deep geothermal energy coupled with solar heating control system according to claim 1 is characterized in that: The heat collection control module includes a first execution unit, a heat loss model and a heat compensation unit; The first execution unit is used to control the start and stop of the geothermal well heat exchange equipment and the solar thermal equipment; The heat loss model is used to calculate the heat loss of the water tank and the heat loss of the pipeline. The heat loss of the water tank is calculated based on the heat loss of the water tank per unit time, and the heat loss of the pipeline is calculated based on the heat loss of the pipeline per unit length; The thermal compensation unit determines the thermal compensation amount through the loss model, and optimizes the heat production of the thermal energy production component in real time based on the thermal compensation amount, wherein the real-time optimization process is: the water storage tank is reversely connected to the geothermal well heat exchange equipment and the solar thermal equipment respectively to form a first compensation pipeline and a second compensation pipeline, and the first compensation pipeline or the second compensation pipeline is selected for heat compensation based on the thermal compensation amount.

3. The mid-deep geothermal energy coupled with solar energy heating control system according to claim 2 is characterized in that: The heat collection control module also includes a channel selection unit, which is used to select the first compensation pipeline or the second compensation pipeline during heat compensation; wherein the selection process is: obtaining the real-time temperatures of the geothermal well heat exchange equipment and the solar energy heat collection equipment, if the real-time temperature of the geothermal well heat exchange equipment is greater than that of the solar energy heat collection equipment, then selecting the first compensation pipeline, if the real-time temperature of the geothermal well heat collection equipment is less than that of the solar energy heat collection equipment, then selecting the second compensation pipeline.

4. The mid-deep geothermal energy coupled solar heating control system according to claim 3 is characterized in that: The first heat source inlet and the second heat source inlet are located on both sides of the water storage tank, and the regulating mechanism includes a mounting body, and the mounting body is fixedly arranged between the first heat source inlet and the second heat source inlet; A motor is arranged on the top of the mounting body, and a driving gear is connected to the output end of the motor. A screw rod is also arranged on the mounting body, and the top and bottom of the screw rod are respectively fixed by fixing seats, and a driven gear is arranged on the top of the screw rod, and the driven gear is meshed with the driving gear. The screw rod has a first thread segment and a second thread segment, the first thread segment and the second thread segment have opposite thread rotation directions, a first slider is arranged on the first thread segment, the first slider is threadedly connected to the first thread segment, and a second slider is arranged on the second thread segment, the second slider is threadedly connected to the second thread segment; A rotating rod is provided at the bottom of the mounting body, and the middle part of the rotating rod is rotatably connected to the mounting body through a rotating support. A first push rod is provided at one end of the rotating rod, and a first sealing block is provided on the top of the first push rod for adjusting the opening of the first heat source inlet. A second push rod is provided at the other end of the rotating rod, and a second sealing block is provided on the top of the second push rod for adjusting the opening of the second heat source inlet. A first linkage rod is provided on the first slider, the top of the first linkage rod is connected to the first slider, and the bottom of the first linkage rod is connected to the rotating rod. A second linkage rod is provided on the second slider, the top of the second linkage rod is connected to the second slider, and the bottom of the second linkage rod is connected to the rotating rod. The contact points of the first linkage rod and the second linkage rod with the rotating rod are symmetrical along the rotating support.

5. The mid-deep geothermal energy coupled with solar energy heating control system according to claim 4 is characterized in that: The first heat source inlet and the second heat source inlet have the same structure, both of which are T-shaped tube structures, the T-shaped tube structure includes a horizontal tube and a vertical tube connected to the horizontal tube, the horizontal tube is connected to the water storage tank, the top of the vertical tube is used to connect the geothermal heat exchange tube or the solar energy transmission tube, the first sealing block or the second sealing block is arranged inside the vertical tube and is slidably connected to the vertical tube; The second execution unit is connected to the motor and based on the K output by the opening control model A and K B Control the motor to rotate, drive the first slider and the second slider to move toward or away from each other, and then drive the first sealing block or the second sealing block to slide in the vertical tube, so that the K A Adjust the first heat source inlet opening, based on K B Adjust the opening of the second heat source inlet.

6. The mid-deep geothermal energy coupled solar heating control system according to claim 5 is characterized in that: A first partition plate and a second partition plate are respectively provided on both sides of the water storage tank, wherein the first partition plate is used to divide the first heat source inlet into two channels, and a first Tesla valve is connected to one of the channels through a first mixing pipe; The second partition plate is used to divide the second heat source inlet into two channels, and a second Tesla valve is arranged in one of the channels through a second mixing tube, and the outlet ends of the first Tesla valve and the second Tesla valve are both inclined toward the bottom of the water tank.

7. The mid-deep geothermal energy coupled with solar energy heating control system according to claim 6 is characterized in that: An evaporator and a condenser are sequentially arranged on the heat exchange pipeline along the liquid flow direction. The condenser supplies heat to the heat consuming equipment through a circulating heat pump circulation. The evaporator is connected to the condenser to transfer the absorbed heat to the condenser as a heat source.

8. The mid-deep geothermal energy coupled with solar energy heating control system according to claim 7 is characterized in that: The heat-using pipeline control module is connected to the heat exchange pipeline and the delivery pipeline respectively, and controls the on-off of the heat exchange pipeline and the delivery pipeline based on the regulation strategy of the user-side heat-using equipment.

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