Terrestrial heat storage enhanced heat exchange device

Abstract

The invention provides a geothermal heat storage enhanced heat exchange device, and mainly relates to the technical field of geothermal energy collection equipment. A geothermal heat storage enhanced heat exchange device comprises an upper water tank and a lower water tank symmetrical to the upper water tank. A plurality of evenly-distributed heat exchange pipes are fixedly installed between the upper water tank and the lower water tank, the upper water tank and the lower water tank are communicated through the heat exchange pipes, the top face of the upper water tank is fixedly communicated with a liquid inlet pipe, the bottom of the lower water tank is fixedly communicated with a liquid outlet pipe, and a scraping plate is arranged between the upper water tank and the lower water tank. The scraping plate is driven by a lifting assembly to move, and the heat exchange pipes vertically penetrate through the scraping plate and are in sliding fit with the scraping plate. The heat exchange device has the beneficial effects that the heat exchange area is obviously increased by arranging the multiple heat exchange pipes which are evenly distributed, so that the heat exchange efficiency is improved, the scraping plate can be driven by the stepping motor to accurately ascend and descend, impurities attached to the surfaces of the heat exchange pipes are effectively removed, and the adverse effect of the impurities on the heat exchange efficiency is avoided.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of geothermal energy collection equipment, and specifically to a geothermal heat storage and enhanced heat exchange device. Background Art

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, the development of clean and renewable energy has become the focus of governments and enterprises around the world. Geothermal energy, as a clean, stable and renewable energy form, has received widespread attention and attention due to its large reserves, wide distribution, long utilization time, low operating costs and easy maintenance.

[0003] However, in the process of geothermal energy development and utilization, how to improve the heat exchange efficiency of geothermal heat storage systems has become an urgent problem to be solved. Traditional geothermal heat storage systems often have problems such as limited heat exchange area, low heat exchange efficiency, and poor system stability, which limit the efficient utilization and widespread promotion of geothermal energy.

[0004] The existing Chinese patent with publication number CN 116928899A discloses a geothermal downhole heat exchanger. This geothermal downhole heat exchanger has less heat loss and higher heat exchange efficiency. The above-mentioned geothermal downhole heat exchanger includes: a plurality of liquid inlet pipes and at least one liquid outlet pipe; the liquid inlet pipe is arranged in the geothermal well, and a low-temperature medium flows in the liquid inlet pipe, and the lower part of the liquid inlet pipe is located at the heat reservoir; the liquid outlet pipe is arranged in the geothermal well, and the liquid outlet pipe is arranged at intervals from the liquid inlet pipe, and the bottom end of the liquid inlet pipe is connected to the bottom end of the liquid outlet pipe, and a high-temperature medium flows in the liquid outlet pipe. The present invention solves the problem that the hot and cold fluids in the inner and outer tubes of the geothermal downhole heat exchanger in the prior art exchange heat through the inner tube wall, resulting in large heat loss and low heat exchange efficiency.

[0005] However, the geothermal downhole heat exchanger has the following defects when used: The geothermal downhole heat exchanger in the prior art, when in use, mainly isolates the liquid inlet pipe from the liquid outlet pipe to reduce the heat exchange between the liquid inlet pipe and the liquid outlet pipe, thereby reducing the loss of heat energy. However, the contact area between the heat exchanger and the heat source in the geothermal well has not changed substantially, resulting in its heat exchange efficiency not being effectively improved. After the heat exchanger has been in contact with the hot fluid in the geothermal well for a long time, a layer of dirt will adhere to the surface of the heat exchanger, affecting the heat exchange, resulting in the geothermal energy collection efficiency is still relatively low. Summary of the invention

[0006] In order to solve the deficiencies of the prior art, the present invention provides a geothermal heat storage enhanced heat exchange device, which is implemented through the following technical solutions: A geothermal heat storage enhanced heat exchange device, comprising an upper water tank and a lower water tank symmetrically arranged therewith; a plurality of evenly distributed heat exchange tubes are fixedly installed between the upper water tank and the lower water tank, the upper water tank and the lower water tank are connected through the heat exchange tubes, the top surface of the upper water tank is fixedly connected with a liquid inlet pipe, the bottom of the lower water tank is fixedly connected with a liquid outlet pipe, a scraper is arranged between the upper water tank and the lower water tank, the scraper is driven to move by a lifting assembly, and the heat exchange tubes vertically penetrate the scraper and slide with it; A spoiler assembly is arranged on the top of the upper water tank, and a plurality of rotatable spoiler plates are arranged on the periphery of the spoiler assembly. Furthermore, the lifting assembly includes: A base is provided below the lower water tank, and the base is fixedly connected to the lower water tank via a support column; Screw rods, a plurality of screw rods surrounding the outer circumference of the lower water tank are rotatably mounted on the top surface of the base; Connecting plates, a plurality of connecting plates corresponding to the screw rods are fixedly installed around the scraper, and the screw rods vertically penetrate the connecting plates and cooperate with the screw rods; All the screw rods are connected through a transmission assembly, wherein a first gear is fixedly mounted on the outside of one of the screw rods, a stepper motor is fixedly mounted on the top surface of the base, and a second gear meshing with the first gear is fixedly mounted on the output end of the stepper motor.

[0007] Furthermore, a connecting sleeve is fixedly mounted on the top and bottom surfaces of the connecting plate, and a spiral scraper matched with the screw thread is fixedly mounted on the connecting sleeve.

[0008] Furthermore, the transmission assembly includes: Synchronous wheels, the lower part of the screw rods are respectively fixedly mounted with synchronous wheels; Synchronous belt, all the synchronous wheels are connected through synchronous belt transmission.

[0009] Furthermore, a shell is fixedly mounted on the top surface of the base, the stepper motor, the first gear, the second gear and the transmission assembly are all located in the shell, and the screw rods vertically penetrate the shell and are rotatably connected to the shell via a sealed bearing.

[0010] Furthermore, the spoiler assembly includes: An axial-flow propeller-type water turbine, wherein the axial-flow propeller-type water turbine is fixedly installed at the center of the top surface of the upper water tank, the water outlet of the axial-flow propeller-type water turbine is fixedly connected to the top of the upper water tank and communicated with each other, and the water inlet of the axial-flow propeller-type water turbine is fixedly connected to the liquid inlet pipe; A sealing cover, wherein the sealing cover is fixedly installed on the top of the axial-flow propeller-type water turbine, and the rotating shaft of the axial-flow propeller-type water turbine extends upward into the sealing cover; Mounting seats, a plurality of evenly distributed mounting seats are fixedly mounted around the top surface of the upper water tank; A transmission shaft is provided through the upper part of the mounting seat, and the transmission shaft is rotatably connected to the mounting seat through a bearing, and the transmission shaft passes through the sealing cover and is rotatably connected to the sealing cover through a sealing bearing; A first helical gear, the first helical gear being fixedly mounted on the upper end of the rotating shaft of the axial-flow propeller-type water turbine; A second bevel gear is fixedly installed on one end of the transmission shaft located in the sealing cover, and the second bevel gear is meshed with the first bevel gear. A spoiler is fixedly installed on one end of the transmission shaft located outside the sealing cover.

[0011] Furthermore, the inner wall of the heat exchange tube is provided with spiral fins, the spiral fins are distributed in a spiral along the axial direction of the heat exchange tube, and the spiral fins are fixedly connected to the inner wall of the heat exchange tube.

[0012] Furthermore, the outer walls of the lower water tank and the liquid outlet pipe are both provided with an insulation layer, and the insulation layer is made of insulation materials such as rock wool or polyurethane to reduce heat loss and improve the heat storage efficiency of the device.

[0013] Furthermore, the shell side is provided with an inspection port, and a sealable inspection door is rotatably connected to the inspection port via a hinge.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This device significantly increases the heat exchange area by setting up multiple evenly distributed heat exchange tubes, thereby improving the heat exchange efficiency. At the same time, the innovative design of the scraper and lifting assembly enables the scraper to be accurately lifted and lowered under the drive of the stepper motor, effectively removing impurities attached to the surface of the heat exchange tube, and avoiding the adverse effects of impurities on the heat exchange efficiency. This design not only ensures the efficient operation of the system, but also reduces the manual operation cost through automatic control, and improves the stability and maintenance convenience of the system. In addition, the setting of the spiral fins further enhances the turbulence of the fluid in the heat exchange tube, improves the heat exchange efficiency, and significantly improves the heat exchange performance of the entire device.

[0015] 2. This device cleverly uses an axial-flow propeller turbine as the power source of the spoiler assembly, and drives the spoiler to rotate through the kinetic energy of the heat exchange medium, without the need for an additional power source, thereby reducing the energy consumption of the equipment. The synchronous rotation of the spoiler enhances the disturbance effect on the fluid in the geothermal well, prompting the fluid to more fully contact the heat exchange tube, further improving the heat exchange efficiency. This design not only embodies the environmental protection concept of energy conservation and emission reduction, but also improves the overall performance of the device by optimizing the fluid flow state, making it have a wider application prospect in the field of geothermal heat storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 yes Figure 2 Partial enlarged view of Ⅰ; Figure 4 It is a structural schematic diagram of the lifting assembly of the present invention; Figure 5 is a schematic cross-sectional structural diagram of a transverse cross section of a housing of the present invention; Figure 6 is a schematic structural diagram of a spoiler assembly of the present invention; Figure 7 It is a structural schematic diagram of the spiral scraper of the present invention.

[0017] Numbers shown in the accompanying drawings: 10, upper water tank; 101, heat exchange tube; 102, liquid inlet pipe; 103, liquid outlet pipe; 104, spiral rib; 20, lower water tank; 30, scraper; 40, lifting assembly; 401, base; 402, screw; 403, connecting plate; 404, first gear; 405, stepping motor; 406, second gear; 50, spoiler assembly; 501, spoiler; 502, axial-flow propeller turbine; 503, sealing cover; 504, mounting seat; 505, transmission shaft; 506, first bevel gear; 507, second bevel gear; 60, transmission assembly; 601, synchronous wheel; 602, synchronous belt; 70, housing; 80, connecting sleeve; 801, spiral scraper. DETAILED DESCRIPTION

[0018] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] Embodiment: A geothermal heat storage and enhanced heat exchange device like Figure 1-7 As shown, a geothermal heat storage enhanced heat exchange device, the specific structure of which includes: An upper water tank 10 and a lower water tank 20 symmetrically arranged therewith; a plurality of evenly distributed heat exchange tubes 101 are fixedly installed between the upper water tank 10 and the lower water tank 20, the upper water tank 10 and the lower water tank 20 are communicated with each other through the heat exchange tubes 101, and the opposite sides of the upper water tank 10 and the lower water tank 20 are respectively fixedly connected to the two ends of the heat exchange tubes 101, the top surface of the upper water tank 10 is fixedly connected with a liquid inlet pipe 102, and the bottom of the lower water tank 20 is fixedly connected with a liquid outlet pipe 103, a scraper 30 is arranged between the upper water tank 10 and the lower water tank 20, and the scraper 30 is driven to move by a lifting assembly 40, and the heat exchange tubes 101 all vertically penetrate the scraper 30 and slide with it; A spoiler assembly 50 is disposed on the top of the upper water tank 10 , and a plurality of rotatable spoiler plates 501 are disposed on the outer periphery of the spoiler assembly 50 . The above works like this: When the device is in use, the heat exchange liquid is pumped into the upper water tank 10 from the liquid inlet pipe 102, and then flows into the lower water tank 20 through the heat exchange tube 101. Under the action of gravity and water pressure, the fluid circulates in the device. The scraper 30 can move up and down driven by the lifting component 40, so as to scrape off impurities attached to the surface of the heat exchange tube 101 to avoid affecting the heat exchange efficiency. At the same time, the spoiler of the spoiler component rotates to disturb the fluid in the geothermal well, so as to promote the fluid to contact with the heat exchange tube 101 more fully, thereby improving the heat exchange efficiency. The heat exchange area of ​​the device is increased by providing a plurality of heat exchange tubes 101, and the combination of the scraper 30 and the lifting assembly 40 can effectively remove impurities on the surface of the heat exchange tube and maintain a good heat exchange effect. The use of the spoiler assembly 50 enhances the disturbance of the fluid in the geothermal well and greatly improves the heat exchange efficiency.

[0022] Specific reference Figure 4 , the lifting assembly 40 includes: Base 401, a base 401 is provided below the lower water tank 20, the base 401 is fixedly connected to the lower water tank 20 via a support column 201, the upper end of the support column 201 is fixedly connected to the bottom surface of the lower water tank 20, and the lower end of the support column 201 is fixedly connected to the top surface of the base 401; Screw rods 402, a plurality of screw rods 402 surrounding the outer circumference of the lower water tank 20 are rotatably mounted on the top surface of the base 401, and the lower ends of the screw rods 402 are connected to the bearings of the base 401; Connecting plates 403, a plurality of connecting plates 403 corresponding to the screw rods 402 are fixedly installed around the scraper 30, and the screw rods 402 vertically penetrate the connecting plates 403 and cooperate with the screw rods 402; All of the screw rods 402 are connected through a transmission assembly 60, wherein a first gear 404 is fixedly installed on the outside of one of the screw rods 402, a stepper motor 405 is fixedly installed on the top surface of the base 401, the stepper motor 405 is electrically connected to a power supply, and a second gear 406 meshing with the first gear 404 is fixedly installed on the output end of the stepper motor 405.

[0023] After the stepper motor 405 is started, its output end drives the second gear 406 to rotate, and the second gear 406 and the first gear 404 mesh with each other, driving the screw 402 to rotate. Since the screw 402 and the connecting plate 403 are threadedly matched, the scraper 30 is driven to move up and down. Multiple screws 402 are rotated synchronously through the transmission assembly 60 to ensure smooth lifting and lowering of the scraper. The lifting assembly 40 can accurately control the lifting of the scraper 30, and the synchronous rotation of the multiple screws 402 ensures the stability of the lifting of the scraper 30, providing a reliable guarantee for removing impurities on the surface of the heat exchange tube 101. In addition, the stepper motor 405 and the transmission assembly 60 can realize the automatic control of the lifting of the scraper 30, which can reduce the cost of manual operation.

[0024] Specific reference Figure 3 , Figure 7 The top and bottom surfaces of the connecting plate 403 are fixedly mounted with connecting sleeves 80 , and the connecting sleeves 80 are fixedly mounted with spiral scrapers 801 that threadably cooperate with the screw rod 402 .

[0025] When the screw 402 rotates to drive the connecting plate 403 to rise and fall, the spiral scraper 801 on the connecting sleeve 80 and the screw 402 rotate relative to each other, and the thread of the screw 402 moves along the spiral scraper 801. During the rotation of the screw 402, the spiral scraper 801 can clean the impurities inside the thread of the screw 401 to prevent the accumulation of impurities from affecting the thread cooperation between the screw 402 and the connecting plate 403, effectively extending the service life of the screw 402 and ensuring the stable operation of the lifting assembly 40.

[0026] Specific reference Figure 5 , the transmission assembly 60 includes: Synchronous wheels 601, the lower parts of the screw rods 402 are respectively fixedly mounted with synchronous wheels 601, and all the synchronous wheels 601 are located in the same horizontal plane; Synchronous belt 602 , all the synchronous wheels 601 are connected through the synchronous belt 602 .

[0027] When one of the screw rods 402 rotates, the synchronous wheels 601 at the bottom of the other screw rods 402 are driven to rotate synchronously through the synchronous wheel 601 and the synchronous belt 602 at the bottom, thereby realizing the synchronous rotation of multiple screw rods 402. The structure is simple and the transmission is stable, which can ensure the synchronous rotation of multiple screw rods 402 and improve the smoothness of the lifting and lowering of the scraper 30. The synchronous belt transmission has buffering and overload protection functions, which can reduce the impact and vibration during the operation of the equipment.

[0028] The top surface of the base 1 is fixedly mounted with a housing 70, the stepper motor 405, the first gear 404, the second gear 406 and the transmission assembly 60 are all located in the housing 70, and the screw rod 402 vertically penetrates the housing 70 and is rotatably connected to the housing 70 through a sealed bearing. The setting of the housing 70 can protect the transmission components inside it and effectively extend the service life of the equipment. The use of the sealed bearing ensures the sealing of the housing 70 and reduces the impact of the external environment on the equipment inside the housing 70.

[0029] Specific reference Figure 6 , the spoiler component 50 includes: An axial-flow propeller-type water turbine 502 is fixedly installed at the center of the top surface of the upper water tank 10, a water outlet of the axial-flow propeller-type water turbine 502 is fixedly connected to the top of the upper water tank 10 and communicated with each other, and a water inlet of the axial-flow propeller-type water turbine 502 is fixedly connected to the liquid inlet pipe 102; A sealing cover 503 is fixedly installed on the top of the axial-flow propeller-type water turbine 502, and the rotating shaft of the axial-flow propeller-type water turbine 502 extends upward into the sealing cover 503; Mounting seats 504, a plurality of evenly distributed mounting seats 504 are fixedly mounted around the top surface of the upper water tank 10; The transmission shaft 505 is provided through the upper part of the mounting seat 504, and the transmission shaft 505 is rotatably connected to the mounting seat 504 through a bearing, and the transmission shaft 505 passes through the sealing cover 503 and is rotatably connected to the sealing cover 503 through a sealing bearing; A first bevel gear 506, the first bevel gear 506 is fixedly mounted on the upper end of the rotating shaft of the axial-flow propeller turbine 502; The second bevel gear 507 is fixedly installed on one end of the transmission shaft 505 located inside the sealing cover 503 , and the second bevel gear 507 is meshed with the first bevel gear 506 . The spoiler 501 is fixedly installed on one end of the transmission shaft 505 located outside the sealing cover 503 .

[0030] The heat exchange medium enters the axial flow propeller turbine 502 from the liquid inlet pipe 102, driving the shaft of the axial flow propeller turbine 502 to rotate, and the shaft drives the first bevel gear 506 to rotate. The first bevel gear 506 is meshed with the second bevel gear 507, driving the transmission shaft 505 to rotate, and then driving the spoiler 501 to rotate, thereby disturbing the high-temperature fluid in the geothermal well. The spoiler assembly 50 utilizes the kinetic energy of the heat exchange medium to drive the spoiler 501 to rotate, without the need for an additional power source, thereby reducing the energy consumption of the device. At the same time, through the transmission of the first bevel gear 506, the second bevel gear 507 and the transmission shaft 505, the synchronous rotation of multiple spoilers 501 is achieved, thereby enhancing the disturbance effect on the fluid in the geothermal well and improving the heat exchange efficiency.

[0031] The inner wall of the heat exchange tube 101 is provided with spiral fins 104, which are spirally distributed along the axial direction of the heat exchange tube 101 and are fixedly connected to the inner wall of the heat exchange tube 101, so as to increase the turbulence of the fluid in the heat exchange tube 101 and improve the heat exchange efficiency. When the fluid flows in the heat exchange tube 101, the spiral fins 104 cause the fluid to produce a spiral motion, increase the turbulence of the fluid, strengthen the heat exchange between the fluid and the inner wall of the heat exchange tube 101, increase the contact area between the fluid and the inner wall of the heat exchange tube 101, effectively improve the heat exchange efficiency of the heat exchange tube 101, and thus improve the heat exchange performance of the entire device.

[0032] The outer walls of the lower water tank 20 and the liquid outlet pipe 103 are both provided with an insulation layer, which is made of insulation materials such as rock wool or polyurethane to reduce heat loss and improve the heat storage efficiency of the device. The provision of the insulation layer 80 reduces heat loss, improves the heat storage efficiency of the device, reduces energy consumption, and enables the device to store geothermal energy more effectively.

[0033] The housing 70 is provided with an inspection port on the side thereof, and a sealable inspection door is connected to the inspection port by a hinge rotation, so as to facilitate the inspection and maintenance of the inside of the device. The inspection port and the inspection door are both prior art and are not shown in the figure. The specific structure and use of the inspection port and the inspection door are not described in detail again. Those skilled in the art can select and install the inspection port according to the actual application requirements by reading this document. By opening the inspection door, the stepping motor 405, the transmission assembly 60 and other equipment in the housing 70 can be inspected and maintained.

[0034] The present solution also includes a controller, the position of which is set by the staff according to actual conditions during operation. The controller is used to control the electrical devices used in the present solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication equipment, lights, speakers and microphones; the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single-chip microcomputer, and the supporting motherboard, memory stick, storage medium and power supply are also included therewith, and the power supply is AC or a lithium battery; when a display screen is provided, a display card is also provided; for the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles of Microcontrollers and Application Simulation Cases" and "Principles and Applications of Sensors" published by Tsinghua University Press, and other books in the field can be used for reference; other automatic controls and electrical devices not mentioned are all knowledge well known to those skilled in the art and will not be repeated here.

[0035] In the explanation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other achievable installation methods.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A geothermal heat storage and enhanced heat exchange device, comprising an upper water tank (10) and a lower water tank (20) symmetrically arranged therewith; Features: A plurality of evenly distributed heat exchange tubes (101) are fixedly installed between the upper water tank (10) and the lower water tank (20); the upper water tank (10) and the lower water tank (20) are connected via the heat exchange tubes (101); a liquid inlet tube (102) is fixedly connected to the top surface of the upper water tank (10); a liquid outlet tube (103) is fixedly connected to the bottom of the lower water tank (20); a scraper (30) is provided between the upper water tank (10) and the lower water tank (20); the scraper (30) is driven to move by a lifting assembly (40); and the heat exchange tubes (101) vertically penetrate the scraper (30) and slide in cooperation with the scraper; A spoiler assembly (50) is provided on the top of the upper water tank (10), and a plurality of rotatable spoiler plates (501) are provided on the periphery of the spoiler assembly (50).

2. A geothermal heat storage and enhanced heat exchange device according to claim 1, characterized in that: The lifting assembly (40) comprises: A base (401), wherein a base (401) is provided below the lower water tank (20), and the base (401) is fixedly connected to the lower water tank (20) via a support column (201); Screw rods (402), a plurality of screw rods (402) surrounding the outer circumference of the lower water tank (20) are rotatably mounted on the top surface of the base (401); Connecting plates (403), wherein a plurality of connecting plates (403) corresponding to the screw rods (402) are fixedly mounted around the scraper (30), and the screw rods (402) vertically penetrate the connecting plates (403) and cooperate with the screw threads thereof; All of the screw rods (402) are connected in transmission via a transmission assembly (60), wherein a first gear (404) is fixedly mounted on the outside of one of the screw rods (402), a stepper motor (405) is fixedly mounted on the top surface of the base (401), and a second gear (406) meshing with the first gear (404) is fixedly mounted on the output end of the stepper motor (405).

3. A geothermal heat storage enhanced heat exchange device according to claim 2, characterized in that: A connecting sleeve (80) is fixedly mounted on the top and bottom surfaces of the connecting plate (403), and a spiral scraper (801) that is threadably matched with the screw rod (402) is fixedly mounted on the connecting sleeve (80).

4. A geothermal heat storage and enhanced heat exchange device according to claim 3, characterized in that: The transmission assembly (60) comprises: Synchronous wheels (601), the lower parts of the screw rods (402) are respectively fixedly mounted with synchronous wheels (601); A synchronous belt (602), wherein all the synchronous wheels (601) are connected through the synchronous belt (602).

5. A geothermal heat storage and enhanced heat exchange device according to claim 4, characterized in that: A housing (70) is fixedly mounted on the top surface of the base (1); the stepper motor (405), the first gear (404), the second gear (406) and the transmission assembly (60) are all located in the housing (70); and the screw rod (402) vertically penetrates the housing (70) and is rotatably connected thereto via a sealed bearing.

6. The geothermal heat storage and enhanced heat exchange device according to claim 1, characterized in that: The spoiler component (50) comprises: An axial-flow propeller-type water turbine (502), wherein the axial-flow propeller-type water turbine (502) is fixedly installed at the center of the top surface of the upper water tank (10), a water outlet of the axial-flow propeller-type water turbine (502) is fixedly connected to the top of the upper water tank (10) and communicates with each other, and a water inlet of the axial-flow propeller-type water turbine (502) is fixedly connected to the liquid inlet pipe (102); A sealing cover (503), wherein the sealing cover (503) is fixedly mounted on the top of the axial-flow propeller-type water turbine (502), and the rotating shaft of the axial-flow propeller-type water turbine (502) extends upward into the sealing cover (503); A mounting seat (504), wherein a plurality of evenly distributed mounting seats (504) are fixedly mounted around the top surface of the upper water tank (10); A transmission shaft (505), wherein the upper part of each mounting seat (504) is provided with a transmission shaft (505) penetrating therethrough, and the transmission shaft (505) is rotatably connected to the mounting seat (504) via a bearing, and the transmission shaft (505) penetrates the sealing cover (503) and is rotatably connected thereto via a sealing bearing; a first bevel gear (506), the first bevel gear (506) being fixedly mounted on the upper end of the rotating shaft of the axial-flow propeller-type water turbine (502); A second bevel gear (507), one end of the transmission shaft (505) located inside the sealing cover (503) is fixedly mounted with the second bevel gear (507), the second bevel gear (507) is meshed with the first bevel gear (506), and one end of the transmission shaft (505) located outside the sealing cover (503) is fixedly mounted with a spoiler (501).

7. The geothermal heat storage and enhanced heat exchange device according to claim 1, characterized in that: The inner wall of the heat exchange tube (101) is provided with spiral fins (104), the spiral fins (104) are distributed in a spiral along the axial direction of the heat exchange tube (101), and the spiral fins (104) are fixedly connected to the inner wall of the heat exchange tube (101).

8. The geothermal heat storage and enhanced heat exchange device according to claim 1, characterized in that: The outer walls of the lower water tank (20) and the liquid outlet pipe (103) are both provided with a thermal insulation layer, and the thermal insulation layer is made of thermal insulation materials such as rock wool or polyurethane, and is used to reduce heat loss and improve the heat storage efficiency of the device.

9. The geothermal heat storage and enhanced heat exchange device according to claim 5, characterized in that: The housing (70) is provided with an inspection opening on each side thereof, and a sealable inspection door is rotatably connected to the inspection opening via a hinge.

Images