Solar energy and mid-deep geothermal energy coupled heating operation control system and operation method

Abstract

The present invention belongs to the technical field of comprehensive utilization of geothermal energy and solar energy, and specifically discloses a solar energy and medium-deep geothermal energy coupled heating operation control system, including a heat energy direct supply module for coupling the heat sources of geothermal energy equipment and solar energy equipment; a heat load simulation module for obtaining heat load parameters and predicting the heat load parameters for the next unit time; a control module for controlling the heat energy direct supply module based on the heat load parameters; a heat loss calculation module for calculating the total amount of heat loss; a heat compensation module for determining the heat compensation amount through the total amount of heat loss, and performing heat compensation on the coupled heat storage component based on solar photovoltaic power generation. On this basis, the present invention also discloses a solar energy and medium-deep geothermal energy coupled heating operation method, which uses a coupled heat storage component to couple the heat sources of geothermal energy equipment and solar energy equipment, and regulates the heat energy direct supply module based on the heat load parameters, thereby ensuring the supply at the user end while avoiding overcapacity to the greatest extent possible.

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 control system and an operation method for coupled heating of solar energy and mid-deep geothermal energy. 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 publication 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 solar energy and mid-deep geothermal energy coupled heating operation control system and operation method.

[0005] The first aspect of the present invention provides a solar energy and mid-deep geothermal energy coupled heating operation control system, comprising:

[0006] A heat energy direct supply module is used to couple a geothermal heat source and a solar heat source in a coupled heat storage component to form a heat energy direct supply module at the user end, wherein the geothermal heat source is provided by a geothermal energy device, and the solar heat source is provided by a solar energy device;

[0007] The heat load simulation module is used to simulate the heat load of the user end in a unit time, obtain the total heat load, heating temperature and control strategy of heat-using equipment in units of residential areas, communities or industrial parks based on big data push, and predict the total heat load, heating temperature and control strategy of heat-using equipment at the user end in the next unit time;

[0008] A control module controls the direct heat energy supply module based on the total amount of heat load in the next unit time, the heat temperature and the regulation strategy of the user-side heat equipment;

[0009] A heat loss calculation module, used to calculate coupling heat loss and pipeline heat loss, wherein the coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline;

[0010] The heat compensation module determines the heat compensation amount by coupling heat loss and pipeline heat loss, and performs heat compensation on the coupled heat storage component based on solar photovoltaic power generation;

[0011] The coupled heat storage component includes an electric heating furnace and a regulating mechanism. The electric heating furnace includes a geothermal energy heat source inlet and a solar energy heat source inlet. The geothermal energy equipment is connected to the geothermal energy heat source inlet through a geothermal energy heat exchange pipe, and the solar energy equipment is connected to the solar energy heat source inlet through a solar energy transmission pipe, which is used to couple the geothermal energy equipment heat source and the solar energy equipment heat source in the electric heating furnace; the regulating mechanism is arranged between the geothermal energy heat source inlet and the solar energy heat source inlet, and is used to synchronously adjust the flow opening of the geothermal energy heat source inlet and the solar energy heat source inlet.

[0012] A further solution is that the solar energy device includes a frame, in which a glass panel, a photovoltaic panel, a back plate, a heat pipe, a heat conducting sheet and a heat insulation board are arranged in sequence from top to bottom, the photovoltaic panel is electrically connected to a power storage unit, the power storage unit is connected to the electric heating furnace, and is used to perform heat compensation on the electric heating furnace, the electric heating furnace is provided with a temperature sensor, and the temperature sensor is connected to the heat compensation module;

[0013] The heat compensation process is:

[0014] Add the coupling heat loss and pipeline heat loss to get the total heat loss M kJ. When the total heat loss M kJ is obtained, the temperature drop of the heat source in the electric heating furnace is N°C. Then the heat source temperature after heat compensation is T+N.

[0015] The thermal compensation module turns on the power storage unit to heat the electric heating furnace;

[0016] The thermal compensation module obtains the parameters of the temperature sensor in real time and stops heating when the heat source temperature reaches T+N℃.

[0017] A further solution is that the control module controls the heat output value of the geothermal heat source and the solar heat source based on the total heat load in the next unit time; and controls the flow opening of the geothermal heat source and the solar heat source entering the coupled heat storage component based on the heat temperature in the next unit time; and controls the control strategy of different heat extraction pipelines based on the control strategy of the user-end heat-using equipment in the next unit time.

[0018] A further solution is that the control process of the heat output value is: real-time monitoring of the heat output of geothermal energy equipment and solar energy equipment, and stopping heat source extraction when the total heat load of the next unit time is reached.

[0019] A further solution is that the control process of the flow opening of the geothermal heat source and the solar heat source entering the coupled heat storage component is:

[0020] The required temperature T is set, and the maximum value T1 of the geothermal energy equipment temperature within a unit time and the minimum value T2 of the solar energy equipment temperature within a unit time are obtained, so that when the maximum value T1 of the geothermal energy equipment temperature is at a fixed opening coefficient K1 at the geothermal energy heat source inlet and the minimum value T2 of the solar energy equipment temperature is at a fixed opening coefficient K2 at the solar energy heat source inlet, the output temperature of the electric heating furnace is equal to the required temperature T;

[0021] Obtain the difference dT1 between the real-time temperature of geothermal equipment and T1 and the difference dT2 between the real-time temperature of solar equipment and T2, and obtain a large amount of dT1 and the real-time opening coefficient K of the geothermal heat source inlet A The mapping relationship between dT2 and the real-time opening coefficient K of the solar 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 electric heating furnace equal to the required temperature T;

[0022] Among them, K A +K B =1;

[0023] Based on the opening control model, the flow openings of different heat source inlets of the electric heating furnace are synchronously adjusted.

[0024] A further solution is that the control strategy of the user-side heat-using equipment includes starting the heat source consumption equipment or starting the heat consumption equipment or starting the heat source consumption equipment and the heat consumption equipment at the same time;

[0025] The control strategies of the different heat extraction pipelines include:

[0026] When the heat source consumption equipment is started, the solenoid valve of the transmission pipeline between the electric heating furnace and the user end is controlled to open;

[0027] When the heat consumption equipment is started, the solenoid valve of the heat exchange pipeline between the electric heating furnace and the user end is controlled to open;

[0028] When the heat source consumer and the heat consumer are started at the same time, the solenoid valves of the conveying pipeline and the heat exchange pipeline are controlled to open at the same time.

[0029] A further solution is that the geothermal heat source inlet and the solar heat source inlet are located on both sides of the electric heating furnace, and the regulating mechanism includes a mounting body, and the mounting body is fixedly arranged between the geothermal heat source inlet and the solar heat source inlet;

[0030] 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.

[0031] 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;

[0032] 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 top rod is provided at one end of the rotating rod, and a first sealing block is provided on the top of the first top rod for adjusting the opening of the geothermal heat source inlet. A second top rod is provided at the other end of the rotating rod, and a second sealing block is provided on the top of the second top rod for adjusting the opening of the solar heat source inlet.

[0033] 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.

[0034] A further solution is that both ends of the electric heating furnace are provided with a T-shaped tube structure, 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 electric heating furnace, 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;

[0035] The control module is connected to the motor and based on the K output of the opening control modelA 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 opening of the geothermal heat source inlet, based on K B Adjust the opening of the solar heat source inlet.

[0036] A further solution is that partition plates are provided on both sides of the electric heating furnace to divide the geothermal heat source inlet or the solar heat source inlet into two channels, one of which is connected to a Tesla valve through a mixing pipe; the outlet ends of the two Tesla valves are inclined toward the bottom of the electric heating furnace.

[0037] The second aspect of the present invention provides a method for operating a solar energy and medium-deep geothermal energy coupled heating system, which uses the above-mentioned solar energy and medium-deep geothermal energy coupled heating system, and includes the following steps:

[0038] The heat sources of geothermal energy equipment and solar energy equipment are coupled in a coupled heat storage component to directly supply heat energy to the user end;

[0039] The heat load of the user end in a unit time is simulated, and the total heat load, heating temperature and control strategy of heat-using equipment in the unit of the community, neighborhood or industrial park are obtained based on big data push, and the total heat load, heating temperature and control strategy of heat-using equipment of the user end in the next unit time are predicted;

[0040] Controlling the heat output value of the geothermal heat source and the solar heat source based on the total heat load of the next unit time; and controlling the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component based on the heat temperature of the next unit time; and controlling the control strategy of different heat extraction pipelines based on the control strategy of the user-side heat-using equipment of the next unit time;

[0041] Calculating coupling heat loss and pipeline heat loss, wherein the coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline;

[0042] The heat compensation amount is determined by coupling heat loss and pipeline heat loss, and heat compensation is performed on the coupled heat storage component based on solar photovoltaic power generation.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] (1) The present invention couples the heat sources of geothermal energy equipment and solar energy equipment in a coupled heat storage component through a direct heat energy supply module, simulates the heat load at the user end through a heat load simulation module, and controls the heat generation, coupling strategy, and pipeline selection strategy based on the total heat load, heat temperature, and the regulation strategy of the heat-using equipment at the user end through a control module, thereby ensuring the supply at the user end while avoiding overcapacity to the greatest extent possible.

[0045] (2) Since heat energy will cause heat loss in the electric heating furnace and during pipeline transportation, in order to ensure the heat demand at the user end, the present application determines the heat compensation amount through a heat loss calculation module, and stores the power generated by the photovoltaic panel in a storage unit for the power supply of the electric heating furnace. The heat compensation module controls whether the electric heating furnace is heated based on the heat compensation amount, thereby ensuring the heat demand at the user end.

[0046] (3) The present invention accurately controls the opening of the geothermal heat source inlet and the solar heat source inlet through the opening control model. In the process of establishing the opening control model, the fixed opening of the geothermal heat source inlet and the solar heat source inlet is first determined based on the required temperature, the geothermal energy equipment temperature and the solar energy equipment temperature. Since the geothermal energy equipment temperature and the solar energy equipment temperature are variables within a period of time, they may increase or decrease. In order to further reduce the error, the present invention uses the maximum value of the geothermal energy equipment temperature within a period of time and the minimum value of the solar energy equipment temperature within a period of time to constrain the fixed opening of the geothermal heat source inlet and the solar energy heat source inlet. When the temperature changes, the geothermal energy equipment temperature can only decrease, and the solar energy equipment temperature can only increase. The range of variation of the variables is reduced, which facilitates better control of the heat source opening.

[0047] (4) Since the temperature of the geothermal energy equipment can only be reduced, and the temperature of the solar energy 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 energy equipment decreases, in order to ensure the temperature requirements of the user end, it is necessary to reduce the opening of the geothermal energy 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 geothermal heat source inlet.

[0048] (5) Since there is a temperature difference between the heat sources entering the electric heating furnace from the geothermal heat source inlet and the solar heat source inlet, in order to improve the parameter accuracy of the temperature sensor in the electric heating furnace, it is necessary to quickly fuse the two heat sources. Therefore, the present invention arranges two Tesla valves inside the electric heating furnace, and the outlet ends of the Tesla valves are inclined toward the bottom of the electric heating furnace. The heat source accelerated by the Tesla valve has a greater flow rate, which improves the fusion speed of heat sources of different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] 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:

[0050] Figure 1 : Schematic diagram of control principle of solar energy and mid-deep geothermal energy coupled heating operation control system;

[0051] Figure 2 : Schematic diagram of the connection structure of the solar energy and mid-deep geothermal energy coupled heating operation control system;

[0052] Figure 3 :Schematic diagram of the regulatory agency structure;

[0053] Figure 4 : Schematic diagram of the regulatory structure regulation process;

[0054] Figure 5 : Schematic diagram of solar energy equipment structure;

[0055] Figure 6 : Flow chart of the control method for the heating operation of solar energy and mid-deep geothermal energy coupling;

[0056] In the figure: 1. geothermal energy equipment; 2. solar energy equipment; 3. direct heat supply module; 4. coupled heat storage component; 5. heat load simulation module; 6. control module; 7. power storage unit; 8. thermal compensation module; 9. heat loss calculation module; 10. user end; 11. geothermal heat exchange tube; 12. first flow meter; 13. first solenoid valve; 14. first vertical tube; 15. first horizontal tube; 16. electric heating furnace; 17. partition plate; 18. mixing tube; 19. Tesla valve; 20. temperature sensor; 21. motor; 22. driving gear; 23. driven gear; 24. screw rod; 25. mounting body; 26. fixing seat; 27. first thread segment; 28. second thread segment; 29. ​​limit block; 30. first slider; 31. Second slider; 32. First linkage rod; 33. Second linkage rod; 34. Rotating rod; 35. Rotating support; 36. First push rod; 37. First sealing block; 38. Second push rod; 39. Second sealing block; 40. Second vertical pipe; 41. Second horizontal pipe; 42. Solar energy delivery pipe; 43. Second flow meter; 44. Second solenoid valve; 45. Delivery pipeline; 46. Heat exchange pipeline; 47. Third flow meter; 48. Third solenoid valve; 49. Heat source consumption equipment; 50. Heat consumption equipment; 51. Fourth flow meter; 52. Fourth solenoid valve; 53. Circulating heat pump; 54. Frame; 55. Insulation board; 56. Heat conducting sheet; 57. Heat conducting pipe; 58. Back board; 59. Photovoltaic panel; 60. Glass panel. DETAILED DESCRIPTION

[0057] 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.

[0058] Embodiment 1:

[0059] like Figure 1 and Figure 2 As shown, this embodiment provides a solar energy and mid-deep geothermal energy coupled heating operation control system, including: a heat energy direct supply module 3, which is used to couple the heat sources of the geothermal energy device 1 and the solar energy device 2 in the coupling heat storage component 4 to form a heat energy direct supply module 3 of the user end 10;

[0060] The heat load simulation module 5 is used to simulate the heat load of the user end 10 in a unit time, obtain the total heat load, heating temperature and control strategy of heat-using equipment in a unit of a community or a community or an industrial park based on big data push, and predict the total heat load, heating temperature and control strategy of heat-using equipment of the user end 10 in the next unit time;

[0061] The control module 6 controls the heat energy direct supply module 3 based on the total amount of heat load in the next unit time, the heat temperature and the regulation strategy of the heat equipment at the user end 10. Specifically, the control module 6 controls the heat output value of the geothermal heat source and the solar heat source based on the total amount of heat load in the next unit time; and controls the flow opening of the geothermal heat source and the solar heat source entering the coupled heat storage component 4 based on the heat temperature in the next unit time; and controls the regulation strategy of different heat extraction pipelines based on the regulation strategy of the heat equipment at the user end 10 in the next unit time;

[0062] The heat loss calculation module 9 is used to calculate the coupling heat loss and the pipeline heat loss, and the sum of the two is the total heat loss. The coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component 4, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline;

[0063] The heat compensation module 8 determines the heat compensation amount by the coupling heat loss and the pipeline heat loss, and performs heat compensation on the coupling heat storage component 4 based on the solar photovoltaic power generation.

[0064] In the above, the control process of the heat output value is: real-time monitoring of the heat output of the geothermal energy equipment 1 and the solar energy equipment 2, and stopping the heat source extraction when the total heat load of the next unit time is reached.

[0065] In order to control the flow opening of the geothermal energy source and the solar energy source into the coupled heat storage component 4 based on the heat temperature of the next unit time, in this embodiment, the coupled heat storage component 4 includes an electric heating furnace 16 and a regulating mechanism, the electric heating furnace 16 includes a geothermal energy source inlet and a solar energy source inlet, the geothermal energy device 1 is connected to the geothermal energy source inlet through a geothermal energy heat exchange pipe 11, and the solar energy device 2 is connected to the solar energy source inlet through a solar energy delivery pipe 42, which is used to couple the heat source of the geothermal energy device 1 and the heat source of the solar energy device 2 in the electric heating furnace 16; a first flow meter 12 and a first solenoid valve 13 are provided on the geothermal energy heat exchange pipe 11, and a second flow meter 43 and a second solenoid valve 44 are also provided on the solar energy delivery pipe 42; The control mechanism is arranged between the geothermal energy heat source inlet and the solar energy heat source inlet, and is used to synchronously adjust the flow opening of the geothermal energy heat source inlet and the solar energy heat source inlet; in order to adapt to the control strategy of controlling different heat extraction pipelines based on the control strategy of the user end 10 using the heat equipment in the next unit time, in this embodiment, the user end 10 includes a heat consumption device 50 and a heat source consumption device 49, the heat consumption device 50 is connected to the electric heating furnace 16 through the heat exchange pipeline 46, and the heat source consumption device 49 is connected to the electric heating furnace 16 through the transmission pipeline 45, and a third flow meter 47 and a third solenoid valve 48 are arranged on the transmission pipeline 45, and a fourth flow meter 51, a fourth solenoid valve 52 and a circulating heat pump 53 are also arranged on the heat exchange pipeline 46. Among them, the heat consumption equipment 50 is a device that exchanges heat with a heat exchanger arranged inside the electric heating furnace 16 through a heat exchange pipeline 46, such as floor heating equipment, etc. The heat source consumption equipment 49 is a device that directly obtains hot water from the inside of the electric heating furnace 16 through a delivery pipeline 45, such as bathing equipment, pipeline heating in an industrial park, etc. The control strategy of the heat-using equipment is a selection strategy of the heat consumption equipment 50 or the heat source consumption equipment 49, that is, the heat consumption equipment 50 is selected in a certain time period, and the heat source consumption equipment 49 is selected in another time period, etc.

[0066] In this embodiment, the control process of the flow opening of the geothermal energy source and the solar energy source entering the coupled heat storage component 4 is as follows: set the required temperature T, and obtain the maximum value T1 of the temperature of the geothermal energy device 1 within a unit time and the minimum value T2 of the temperature of the solar energy device 2 within a unit time, so that when the maximum value T1 of the temperature of the geothermal energy device 1 is at the fixed opening coefficient K1 of the geothermal energy heat source inlet and the minimum value T2 of the temperature of the solar energy device 2 is at the fixed opening coefficient K2 of the solar energy heat source inlet, the output temperature of the electric heating furnace 16 is equal to the required temperature T; obtain the difference dT1 of the real-time temperature of the geothermal energy device 1 and T1 and the difference dT2 of the real-time temperature of the solar energy device 2 and T2, and obtain a large number of dT1 and the real-time opening coefficient K of the geothermal energy heat source inlet. A The mapping relationship between dT2 and the real-time opening coefficient K of the solar heat source inletB 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 electric heating furnace 16 equal to the required temperature T; wherein, K A +K B =1; the control module 6 synchronously adjusts the flow opening of different heat source inlets of the electric heating furnace 16 based on the opening control model. In this embodiment, the neural network unit uses Dual Input Neural Networks (DI-NNs). The neural network unit 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 ensure that the output temperature of the electric heating furnace 16 can reach the required temperature under different dT1 and dT2.

[0067] In this process, by setting the required temperature T, the maximum value T1 of the temperature of the geothermal energy device 1 within a unit time, and the minimum value T2 of the temperature of the solar energy device 2 within a unit time, the fixed opening coefficient K1 of the geothermal energy heat source inlet and the fixed opening coefficient K2 of the solar energy heat source inlet 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 geothermal energy heat source inlet and the solar energy heat source inlet. In actual use, the heat generation temperature of both the geothermal energy device 1 and the solar energy device 2 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 energy device 1 and the solar energy device 2 in a period of time is selected. In this embodiment, the maximum value T1 of the temperature of the geothermal energy device 1 is selected. In theory, in a unit time, the change in the temperature of the geothermal energy device 1 will only be less than T1, thereby reducing the number of variables.

[0068] like Figure 2 and Figure 3As shown, when the control module 6 is used to regulate the opening of the geothermal heat source inlet and the solar heat source inlet, the regulating mechanism is implemented by the following structure: the regulating mechanism includes a mounting body 25, a motor 21 is arranged on the top of the mounting body 25, the output end of the motor 21 is connected to the driving gear 22, and a screw rod 24 is also arranged on the mounting body 25, and the top and bottom of the screw rod 24 are respectively fixed by a fixing seat 26. In this embodiment, a bearing is arranged inside the fixing seat 26, and the inner ring of the bearing is interference fit with the screw rod 24, and the outer ring of the bearing is connected to the fixing seat 2 6 interference fit, a driven gear 23 is arranged on the top of the screw rod 24, and the driven gear 23 is meshed with the driving gear 22; a first thread segment 27 and a second thread segment 28 are threaded on the screw rod 24, and the thread rotation directions of the first thread segment 27 and the second thread segment 28 are opposite, and a limit block 29 is also arranged at the bottom of the first thread segment 27 and the top of the second thread segment 28, and a first slider 30 is arranged on the first thread segment 27, and the first slider 30 is threadedly connected with the first thread segment 27, and the second thread segment 28 is threadedly connected with the first thread segment 27. A second slider 31 is provided, and the second slider 31 is threadedly connected to the second threaded section 28; a rotating rod 34 is provided at the bottom of the mounting body 25, and the middle part of the rotating rod 34 is rotatably connected to the mounting body 25 through a rotating support 35, and a first push rod 36 is provided at one end of the rotating rod 34, and a first sealing block 37 is provided on the top of the first push rod 36 for adjusting the opening of the geothermal heat source inlet, and a second push rod 38 is provided at the other end of the rotating rod 34, and a second sealing block 39 is provided on the top of the second push rod 38 for adjusting the opening of the geothermal heat source inlet. To adjust the opening of the solar heat source inlet; a first linkage rod 32 is arranged on the first slider 30, the top of the first linkage rod 32 is connected to the first slider 30, and the bottom of the first linkage rod 32 is connected to the rotating rod 34; a second linkage rod 33 is arranged on the second slider 31, the top of the second linkage rod 33 is connected to the second slider 31, and the bottom of the second linkage rod 33 is connected to the rotating rod 34; the contact points of the first linkage rod 32 and the second linkage rod 33 with the rotating rod 34 are symmetrical along the rotating support 35.In this embodiment, both ends of the electric heating furnace 16 are provided with a T-shaped tube structure, 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 electric heating furnace 16, in order to facilitate the understanding of the structure of the electric heating furnace 16, the horizontal tube and the vertical tube located on the left side of the electric heating furnace 16 are respectively recorded as the first horizontal tube 15 and the first vertical tube 14, and the horizontal tube and the vertical tube located on the right side of the electric heating furnace 16 are respectively recorded as the second horizontal tube 41 and the second vertical tube 40, then the top of the first vertical tube 14 is used to connect the geothermal heat exchange tube 11, and the top of the second vertical tube 40 is used to connect the solar energy transmission tube 42, the first sealing block 37 is arranged inside the first vertical tube 14, and is slidably connected to the first vertical tube 14, and the second sealing block 39 is arranged inside the second vertical tube 40, and is slidably connected to the second vertical tube 40. The first horizontal tube 15 is connected to the electric heating furnace 16 to form the above-mentioned geothermal heat source inlet, and the second horizontal tube 41 is connected to the electric heating furnace 16 to form the above-mentioned solar heat source inlet. The control module 6 is connected to the motor 21 and controls K output by the opening control model. A and K B The motor 21 is controlled to rotate, driving the first slider 30 and the second slider 31 to move toward or away from each other, thereby driving the first sealing block 37 to slide in the first vertical tube 14 and the second sealing block 39 to slide in the second vertical tube 40, so that the K A Adjust the opening of the geothermal heat source inlet, based on K B Adjust the opening of the solar heat source inlet. 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 embodiment uses the motor 21 to simultaneously adjust the positions of the first sealing block 37 and the second sealing block 39. For example, when the temperature of the geothermal energy device 1 decreases, in order to ensure the temperature requirement of the user end 10, it is necessary to reduce the opening of the geothermal heat source inlet, that is, K A Reduce, K B Increase, at this time, the motor 21 drives the first slider 30 to move upward and drives the second slider 31 to move downward. Due to the provision of the first linkage rod 32 and the second linkage rod 33, the rotating rod 34 rotates clockwise; and then the first push rod 36 drives the first sealing block 37 to move upward to reduce the opening of the geothermal heat source entrance, and the second push rod 38 drives the second sealing block 39 to move downward to increase the opening of the solar heat source entrance. It should be noted that in the process of the movement of the first sealing block 37 and the second sealing block 39, 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 36 and the second push rod 38 are respectively hinged to the transmission rod through the hinge seat.

[0069] like Figure 5As shown, in this embodiment, the electric heating furnace 16 is heated by the photovoltaic power generation of the solar device 2 to achieve heat compensation. Therefore, the solar device 2 is improved as follows: the solar device 2 includes a frame 54, and the frame 54 is provided with a glass panel 60, a photovoltaic panel 59, a back plate 58, a heat pipe 57, a heat conducting sheet 56 and a heat preservation plate 55 from top to bottom. The photovoltaic panel 59 is electrically connected to a power storage unit 7, and the power storage unit 7 is connected to the electric heating furnace 16 for heat compensation of the electric heating furnace 16. A temperature sensor 20 is provided in the heat furnace 16, and the temperature sensor 20 is connected to the thermal compensation module 8; the heat compensation process is: the coupling heat loss and the pipeline heat loss are added to obtain the total heat loss M kJ, and when the total heat loss M kJ is obtained, the temperature drop value of the heat source in the electric heating furnace 16 is N°C, and the heat source temperature after thermal compensation is T+N; the thermal compensation module 8 turns on the power storage unit 7 to heat the electric heating furnace 16; the thermal compensation module 8 obtains the parameters of the temperature sensor 20 in real time, and stops heating when the heat source temperature reaches T+N°C.

[0070] Since there is a temperature difference between the heat sources entering the electric heating furnace 16 from the geothermal heat source inlet and the solar heat source inlet, in order to improve the parameter accuracy of the temperature sensor 20 in the electric heating furnace 16, the two heat sources need to be quickly fused. In this embodiment, partition plates 17 are provided on both sides of the electric heating furnace 16 to divide the geothermal heat source inlet or the solar heat source inlet into two channels, one of which is connected to a Tesla valve 19 through a mixing pipe 18; the outlet ends of the two Tesla valves 19 are both inclined toward the bottom of the electric heating furnace 16. The liquid accelerated by the Tesla valve 19 is tilted and injected into the bottom of the electric heating furnace 16, which improves the fusion speed of heat sources with different temperatures.

[0071] Embodiment 2:

[0072] On the basis of Example 1, Figure 6 As shown, this embodiment discloses a method for operating a solar energy and medium-deep geothermal energy coupled heating system, comprising the following steps:

[0073] The heat sources of the geothermal energy device 1 and the solar energy device 2 are coupled in the coupling heat storage component 4 to directly supply heat energy to the user end 10;

[0074] The heat load of the user end 10 in a unit time is simulated, and the total heat load, heating temperature and control strategy of heat-using equipment in a unit of a community, a neighborhood or an industrial park are obtained based on big data push, and the total heat load, heating temperature and control strategy of heat-using equipment of the user end 10 in the next unit time are predicted;

[0075] Control the heat output value of the geothermal heat source and the solar heat source based on the total heat load of the next unit time; and control the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component 4 based on the heat temperature of the next unit time; and control the control strategy of different heat extraction pipelines based on the control strategy of the heat-using equipment of the user end 10 of the next unit time; specifically, the control module 6 is connected to the motor 21, the first solenoid valve 13, the second solenoid valve 44, the third solenoid valve 48 and the fourth solenoid valve 52; when controlling the heat output value, it is achieved by controlling the first solenoid valve 13 and the second solenoid valve 44 through the control module 6, and when controlling the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component 4, it is achieved by controlling the motor 21, and when controlling the control strategy of different heat extraction pipelines, it is achieved by controlling the third solenoid valve 48 and the fourth solenoid valve 52;

[0076] Calculate the coupling heat loss and pipeline heat loss, wherein the coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component 4, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline;

[0077] The amount of heat compensation is determined by coupling heat loss and pipeline heat loss, and heat compensation is performed on the coupled heat storage component 4 based on solar photovoltaic power generation. Specifically, in the present embodiment, this is achieved by providing a relay between the power storage unit 7 and the electric heating furnace 16, connecting the relay to the thermal compensation module 8, and controlling the opening / closing of the relay by the thermal compensation module 8 to achieve heat compensation.

[0078] 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. Solar energy and mid-deep geothermal energy coupled heating operation control system, characterized in that: include: A heat energy direct supply module is used to couple a geothermal heat source and a solar heat source in a coupled heat storage component to form a heat energy direct supply module at the user end, wherein the geothermal heat source is provided by a geothermal energy device, and the solar heat source is provided by a solar energy device; The heat load simulation module is used to simulate the heat load of the user end in a unit time, obtain the total heat load, heating temperature and control strategy of heat-using equipment in units of residential areas, communities or industrial parks based on big data push, and predict the total heat load, heating temperature and control strategy of heat-using equipment at the user end in the next unit time; A control module controls the direct heat energy supply module based on the total amount of heat load in the next unit time, the heat temperature and the regulation strategy of the user-side heat equipment; The control module controls the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component based on the heat temperature used in the next unit time; the control process of the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component includes: The required temperature T is set, and the maximum value T1 of the geothermal energy equipment temperature within a unit time and the minimum value T2 of the solar energy equipment temperature within a unit time are obtained, so that when the maximum value T1 of the geothermal energy equipment temperature is at a fixed opening coefficient K1 at the geothermal energy heat source inlet and the minimum value T2 of the solar energy equipment temperature is at a fixed opening coefficient K2 at the solar energy heat source inlet, the output temperature of the electric heating furnace is equal to the required temperature T; A heat loss calculation module, used to calculate coupling heat loss and pipeline heat loss, wherein the coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline; The heat compensation module determines the heat compensation amount by coupling heat loss and pipeline heat loss, and performs heat compensation on the coupled heat storage component based on solar photovoltaic power generation; The coupled heat storage component includes an electric heating furnace and a regulating mechanism. The electric heating furnace includes a geothermal energy heat source inlet and a solar energy heat source inlet. The geothermal energy equipment is connected to the geothermal energy heat source inlet through a geothermal energy heat exchange pipe, and the solar energy equipment is connected to the solar energy heat source inlet through a solar energy transmission pipe, which is used to couple the geothermal energy equipment heat source and the solar energy equipment heat source in the electric heating furnace; the regulating mechanism is arranged between the geothermal energy heat source inlet and the solar energy heat source inlet, and is used to synchronously adjust the flow opening of the geothermal energy heat source inlet and the solar energy heat source inlet.

2. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 1 is characterized in that: The solar energy device comprises a frame, in which a glass panel, a photovoltaic panel, a back plate, a heat pipe, a heat conducting sheet and a heat insulation board are arranged in sequence from top to bottom, the photovoltaic panel is electrically connected to a power storage unit, the power storage unit is connected to the electric heating furnace, and is used to perform heat compensation on the electric heating furnace, the electric heating furnace is provided with a temperature sensor, and the temperature sensor is connected to the heat compensation module; The heat compensation process is: Add the coupling heat loss and pipeline heat loss to get the total heat loss M kJ. When the total heat loss M kJ is obtained, the temperature drop of the heat source in the electric heating furnace is N°C. Then the heat source temperature after heat compensation is T+N. The thermal compensation module turns on the power storage unit to heat the electric heating furnace; The thermal compensation module obtains the parameters of the temperature sensor in real time and stops heating when the temperature of the heat source reaches T+N℃.

3. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 2 is characterized in that: The control module controls the heat output value of the geothermal heat source and the solar heat source based on the total heat load of the next unit time; And the control strategy of controlling different heat extraction pipelines is based on the control strategy of the user-side heat-using equipment in the next unit time.

4. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 3 is characterized in that: The control process of the heat output value is: real-time monitoring of the heat output of geothermal energy equipment and solar energy equipment, and stopping heat source extraction when the total heat load of the next unit time is reached.

5. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 4 is characterized in that: The control process of the flow opening of the geothermal energy source and the solar energy source entering the coupled heat storage component also includes: obtaining the difference dT1 between the real-time temperature of the geothermal energy device and T1 and the difference dT2 between the real-time temperature of the solar energy device and T2, obtaining a large amount of dT1 and the real-time opening coefficient K of the geothermal energy source entrance A The mapping relationship between dT2 and the real-time opening coefficient K of the solar 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 electric heating furnace equal to the required temperature T; Among them, K A +K B =1; Based on the opening control model, the flow openings of different heat source inlets of the electric heating furnace are synchronously adjusted.

6. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 5 is characterized in that: The control strategy of the user-side heat-using equipment includes starting the heat source consumption equipment or starting the heat consumption equipment or starting the heat source consumption equipment and the heat consumption equipment at the same time; The control strategies of the different heat extraction pipelines include: When the heat source consumption equipment is started, the solenoid valve of the transmission pipeline between the electric heating furnace and the user end is controlled to open; When the heat consumption equipment is started, the solenoid valve of the heat exchange pipeline between the electric heating furnace and the user end is controlled to open; When the heat source consumer and the heat consumer are started at the same time, the solenoid valves of the conveying pipeline and the heat exchange pipeline are controlled to open at the same time.

7. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 6 is characterized in that: The geothermal energy heat source inlet and the solar energy heat source inlet are located on both sides of the electric heating furnace, and the regulating mechanism includes a mounting body, which is fixedly arranged between the geothermal energy heat source inlet and the solar energy 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 top rod is provided at one end of the rotating rod, and a first sealing block is provided on the top of the first top rod for adjusting the opening of the geothermal heat source inlet. A second top rod is provided at the other end of the rotating rod, and a second sealing block is provided on the top of the second top rod for adjusting the opening of the solar 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.

8. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 7 is characterized in that: Both ends of the electric heating furnace are provided with a T-shaped tube structure, 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 electric heating furnace, 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 control module is connected to the motor and based on the K output of 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 opening of the geothermal heat source inlet, based on K B Adjust the opening of the solar heat source inlet.

9. The solar energy and mid-deep geothermal energy coupled heating operation control system according to claim 8 is characterized in that: Partition plates are provided on both sides of the electric heating furnace to divide the geothermal heat source inlet or the solar heat source inlet into two channels, one of which is connected to a Tesla valve through a mixing pipe; the outlet ends of the two Tesla valves are inclined toward the bottom of the electric heating furnace.

10. A method for heating by coupling solar energy with mid-deep geothermal energy, characterized in that: The solar energy and medium-deep geothermal energy coupled heating operation control system according to any one of claims 1 to 9 comprises the following steps: The heat sources of geothermal energy equipment and solar energy equipment are coupled in a coupled heat storage component to directly supply heat energy to the user end; The heat load of the user end in a unit time is simulated, and the total heat load, heating temperature and control strategy of heat-using equipment in the unit of the community, neighborhood or industrial park are obtained based on big data push, and the total heat load, heating temperature and control strategy of heat-using equipment of the user end in the next unit time are predicted; Controlling the heat output value of the geothermal heat source and the solar heat source based on the total heat load of the next unit time; and controlling the flow opening of the geothermal heat source and the solar heat source into the coupled heat storage component based on the heat temperature of the next unit time; and controlling the control strategy of different heat extraction pipelines based on the control strategy of the user-side heat-using equipment of the next unit time; Calculating coupling heat loss and pipeline heat loss, wherein the coupling heat loss is calculated based on the heat loss per unit time of the coupling heat storage component, and the pipeline heat loss is calculated based on the heat loss per unit length of the pipeline; The heat compensation amount is determined by coupling heat loss and pipeline heat loss, and heat compensation is performed on the coupled heat storage component based on solar photovoltaic power generation.

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