A high-efficiency medium-deep geothermal heat pump unit

Abstract

The present invention belongs to the technical field of heat pump units, and in particular relates to a high-efficiency medium-deep geothermal heat pump unit, comprising a unit body and a heat exchange tube fixedly connected to the unit body, wherein a water temperature sensor is also installed at the corresponding return water port of the heat exchange tube, and further comprising: a water softening mechanism, a bactericide replenishing mechanism, a water pressure real-time monitoring and feedback mechanism, a water pressure drop rate monitoring and feedback mechanism, an alarm level classification mechanism, an automatic water replenishment and voltage stabilization mechanism, and an operating frequency self-regulating mechanism. The present invention can automatically soften the water exchange water, reduce the content of calcium and magnesium ions, prevent scaling, maintain heat exchange efficiency, extend equipment life, and reduce costs; can automatically adjust the regeneration frequency of the softening mechanism and the frequency of bactericide addition according to the water temperature to ensure softening and bactericidal effects; can also effectively monitor heat exchange tube leaks, and issue graded warnings based on the size of the leak point, facilitating timely response and handling by staff, and reducing the risk of failure.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat pump units, and in particular relates to a high-efficiency mid-deep geothermal heat pump unit. Background Art

[0002] The medium-deep geothermal heat pump unit extracts heat energy from medium-deep geothermal resources underground through specific technology, and then uses heat pump technology to upgrade low-temperature heat energy into usable high-temperature heat energy to meet the heating and cooling needs of buildings.

[0003] In medium and deep geothermal heat pump units, the calcium and magnesium ions present in the circulating water used for circulating heat exchange will form insoluble salts such as calcium carbonate, magnesium carbonate, calcium sulfate, etc. under certain conditions. As the circulating water continues to evaporate and concentrate, the concentration of these salts gradually increases. When it exceeds its solubility in water, it will precipitate from the water and adhere to the inner wall of the circulating heat exchange tube to form scale. In addition, changes in water temperature will also affect the solubility of salts. When hot water flows through the heat exchange tube, the water temperature decreases, the solubility of salts decreases, and precipitation and scaling are more likely to occur. The occurrence of scaling will cause the heat exchange tube to become blocked, which in turn leads to a decrease in heat exchange efficiency. Therefore, it is necessary to shut down the heat exchange tube regularly to clean it, but this method will undoubtedly reduce the working continuity of the heat pump unit and affect the heat exchange efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency mid-deep geothermal heat pump unit in response to the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: a high-efficiency medium-deep geothermal heat pump unit, comprising a unit body and a heat exchange pipe fixedly connected to the unit body, wherein a water temperature sensor is installed at the corresponding return water port of the heat exchange pipe, and further comprising:

[0006] A water softening mechanism is installed at the return water end of the heat exchange tube;

[0007] a bactericide replenishing mechanism, fixedly connected to the water outlet end of the heat exchange tube;

[0008] A water pressure real-time monitoring and feedback mechanism is fixedly connected to the heat exchange tube;

[0009] A water pressure drop rate monitoring and feedback mechanism is installed on the water pressure real-time monitoring and feedback mechanism;

[0010] an alarm level classification mechanism, fixedly mounted on the water pressure real-time monitoring and feedback mechanism, and electrically connected to the water pressure drop rate monitoring and feedback mechanism;

[0011] An automatic water-replenishing and pressure-stabilizing mechanism, fixedly connected to the heat exchange tube;

[0012] The working frequency self-regulating mechanism is fixedly installed at the lower end of the water softening mechanism and is electrically connected to the water softening mechanism and the bactericide replenishing mechanism respectively.

[0013] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the water softening mechanism includes a fixed shell fixedly connected to the return water end of the heat exchange tube, the upper and lower ends of the fixed shell are symmetrically fixedly connected with two electric push rods, the movable ends of the two electric push rods on the same side are fixedly connected with the same sealing end cover, the sealing end cover and the heat exchange tube are connected through an elastic bellows, the inner wall of the fixed shell is rotatably connected with a vertically arranged rotating shaft, the outer wall of the fixed shell is fixedly provided with a driving motor for driving the rotating shaft to rotate, the shaft wall of the rotating shaft is symmetrically fixedly connected with two sealing frames, An ion exchange resin is fixedly installed in the sealing frame, and the sealing frame is sealed and clamped between the two sealing end covers. The heat exchange tube is provided with a first solenoid valve on the upper and lower end walls of the fixed shell. The tube wall of the heat exchange tube is also fixedly connected with a diversion pipe, and a second solenoid valve is provided on both ends of the diversion pipe. A spray plate is fixedly installed on one side of the upper end of the inner wall of the fixed shell, and the upper end of the spray plate is fixedly connected with a liquid supply pipe. A liquid supply pump is installed on the liquid supply pipe, and the liquid supply pump is fixedly installed on the upper end of the fixed shell. A reflux groove is fixedly installed on the bottom of the inner wall of the fixed shell.

[0014] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the bactericide replenishing mechanism includes a quantitative shell, the lower end of the quantitative shell is connected to the heat exchange tube through a plurality of dosing pipes, the bottom side wall of the quantitative shell is fixedly connected with a replenishing pipe, and the dosing pipe and the replenishing pipe are both equipped with a one-way valve, and the top of the quantitative shell is fixedly sleeved with multiple electric telescopic rods, and the lower movable ends of the multiple electric telescopic rods are fixedly connected to the same pressurizing piston plate that is sealed with the quantitative shell.

[0015] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the water pressure real-time monitoring feedback mechanism includes a pressure cylinder fixedly connected to the heat exchange pipe, the internal sealing sleeve of the pressure cylinder is provided with a pressure piston, the upper end of the pressure piston is symmetrically fixedly connected with two synchronization rods, the upper ends of the two synchronization rods pass through the upper end of the pressure cylinder, and are fixedly connected to the same pressure plate, the upper end of the pressure piston and the top of the inner wall of the pressure cylinder are fixedly provided with two pressure springs sleeved outside the synchronization rod, the upper end of the pressure piston and the top of the inner wall of the pressure cylinder are also fixedly provided with a feedback shell covering the outside of the synchronization rod and the pressure plate, the top of the inner wall of the feedback shell is fixedly provided with an in-place switch, the lower side of the inner wall of the feedback shell is fixedly provided with a warning switch, and the outer wall of the feedback shell is fixedly provided with an alarm.

[0016] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the water pressure drop rate monitoring feedback mechanism includes a speed-increasing gearbox fixedly mounted on the outer wall of the feedback shell, a micro-generator fixedly mounted on the outer wall of the speed-increasing gearbox, the input end of the micro-generator is fixedly connected to the output end of the speed-increasing gearbox, the input end of the speed-increasing gearbox is fixedly connected to a transmission gear through a one-way ratchet assembly, an extension rod is fixedly connected to one side of the pressure plate, the end of the extension rod away from the pressure plate passes through a strip-shaped opening opened on the side wall of the feedback shell and extends out of the feedback shell, and is fixedly connected to a transmission rack meshing with the transmission gear.

[0017] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the alarm level division mechanism includes a division shell, the inner wall of the division shell is fixedly installed with a plurality of guide slides arranged side by side, and the plurality of guide slides are externally slidably sleeved with the same feedback plate, the upper end of the feedback plate and the top of the inner wall of the division shell are fixedly installed with a plurality of compensation springs sleeved outside the guide slides, the lower end of the feedback plate is fixedly installed with a force-bearing permanent magnet plate, the bottom of the inner wall of the division shell is fixedly installed with a force-adding electromagnetic plate arranged opposite to the force-bearing permanent magnet plate, and one side of the inner wall of the division shell is also fixedly installed with a plurality of level switches distributed up and down, and one side of the feedback plate is fixedly installed with a pressing round head arranged corresponding to the level switch.

[0018] In the above-mentioned high-efficiency mid-deep geothermal heat pump unit, the automatic water supply and pressure stabilization mechanism includes a water supply pipe fixedly connected to the heat exchange pipe, and a water supply pump is installed on the water supply pipe.

[0019] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the working frequency self-regulating mechanism includes a regeneration frequency regulating circular shell and a dosing frequency regulating circular shell fixedly installed at the lower end of the fixed shell, the first transmission shaft is rotatably connected at the inner center of the regeneration frequency regulating circular shell, the lower end of the regeneration frequency regulating circular shell is fixedly installed with a reduction motor for driving the first transmission shaft to rotate, a regeneration trigger switch is also fixedly installed on one side of the inner wall of the regeneration frequency regulating circular shell, the shaft wall of the first transmission shaft is fixedly installed with a first arc-shaped pressing block corresponding to the position of the regeneration trigger switch, the inner wall center of the dosing frequency regulating circular shell is rotatably connected with a second transmission shaft, the inner wall side of the dosing frequency regulating circular shell is fixedly installed with a dosing trigger switch, the shaft wall of the second transmission shaft is fixedly connected with a second arc-shaped pressing block corresponding to the position of the dosing trigger switch, and the first transmission shaft and the second transmission shaft are connected through a reduction pulley assembly.

[0020] Compared with the existing technology, the beneficial effects of the present invention are:

[0021] 1. Through the set unit body, softening water mechanism, heat exchange tube, and working frequency self-regulating mechanism, the hot water can be automatically softened, effectively reducing the content of calcium, magnesium and other ions in the water, preventing scaling, maintaining the heat transfer efficiency of the heat exchange tube and the smooth flow of the water channel, extending the service life of the pipeline and equipment, and reducing operating costs. It can also automatically adjust the replacement and regeneration frequency of the softening water mechanism according to the water temperature after heat exchange. The higher the water temperature, the higher the replacement and regeneration frequency is set to ensure the softening effect.

[0022] 2. Through the provided bactericide replenishing mechanism, heat exchange tube, and working frequency self-regulating mechanism, bactericide can be automatically added to the heat exchange water body to prevent the biofilm formed by bacterial growth from adhering to the inner wall of the heat exchange tube, increasing thermal resistance, hindering heat transfer, and thus leading to reduced heat exchange efficiency. The frequency of bactericide addition can be automatically adjusted based on the water temperature after heat exchange. The higher the water temperature, the higher the frequency of bactericide addition, ensuring timely sterilization.

[0023] 3. Through the set water pressure real-time monitoring feedback mechanism, water pressure drop rate monitoring feedback mechanism, and alarm level division mechanism, it is possible to effectively monitor whether the heat exchange tube is leaking, and to provide different levels of warning feedback based on the size of the leakage point, reminding staff to make better responses and handling to avoid bigger problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a front view structural schematic diagram of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the water softening mechanism of the present invention;

[0027] Figure 4 It is a schematic cross-sectional view of the fungicide replenishing mechanism of the present invention;

[0028] Figure 5 It is a schematic cross-sectional view of the water pressure real-time monitoring and feedback mechanism of the present invention;

[0029] Figure 6 It is a structural diagram of the water pressure drop rate monitoring and feedback mechanism of the present invention;

[0030] Figure 7 It is a schematic cross-sectional view of the alarm level classification mechanism of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the automatic water replenishment and pressure stabilization mechanism of the present invention;

[0032] Figure 9It is a schematic cross-sectional view of the operating frequency self-regulating mechanism of the present invention.

[0033] In the figure: 1 unit body, 2 softening water mechanism, 21 fixed shell, 22 electric push rod, 23 sealing end cover, 24 elastic bellows, 25 rotating shaft, 26 driving motor, 27 sealing frame, 28 ion exchange resin, 29 first solenoid valve, 210 shunt pipe, 211 second solenoid valve, 212 spray plate, 213 liquid supply pipe, 214 liquid supply pump, 215 reflux tank, 3 bactericide replenishing mechanism, 31 quantitative shell, 32 dosing pipe, 33 replenishing pipe, 34 one-way valve, 35 electric telescopic rod, 36 pressurizing piston plate, 4 water pressure real-time monitoring feedback mechanism, 41 pressure cylinder, 42 pressure piston, 43 synchronization rod, 44 pressure plate, 45 pressure spring, 46 feedback shell, 47 in-place switch, 48 warning switch, 49 alarm, 5 water pressure drop speed monitoring feedback Mechanism, 51 speed increasing gearbox, 52 micro generator, 53 one-way ratchet assembly, 54 transmission gear, 55 extension rod, 56 transmission rack, 6 alarm level division mechanism, 61 division shell, 62 guide slide, 63 feedback plate, 64 compensation spring, 65 force permanent magnet plate, 66 afterburner electromagnetic plate, 67 level switch, 68 pressing round head, 7 automatic water replenishment and pressure stabilizing mechanism, 71 water replenishment pipe, 72 water replenishment pump, 8 working frequency self-regulating mechanism, 81 regeneration frequency control round shell, 82 dosing frequency control round shell, 83 first transmission shaft, 84 reduction motor, 85 regeneration trigger switch, 86 first arc-shaped pressing block, 87 second transmission shaft, 88 dosing trigger switch, 89 second arc-shaped pressing block, 810 reduction pulley assembly, 9 heat exchange tube, 10 water temperature sensor. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] like Figures 1-9 As shown, a high-efficiency medium-deep geothermal heat pump unit includes a unit body 1 and a heat exchange pipe 9 fixedly connected to the unit body 1. A water temperature sensor 10 is also installed at the return water port of the heat exchange pipe 9. The unit also includes:

[0036] The softening water mechanism 2 is installed at the return water end of the heat exchange tube 9. The softening water mechanism 2 includes a fixed shell 21 fixedly connected to the return water end of the heat exchange tube 9. Two electric push rods 22 are symmetrically fixedly connected to the upper and lower ends of the fixed shell 21. The movable ends of the two electric push rods 22 on the same side are fixedly connected to the same sealing end cover 23. The sealing end cover 23 and the heat exchange tube 9 are connected through an elastic bellows 24. The inner wall of the fixed shell 21 is rotatably connected to a vertically arranged rotating shaft 25. The outer wall of the fixed shell 21 is fixedly provided with a driving motor 26 for driving the rotating shaft 25 to rotate. The shaft wall of the rotating shaft 25 is symmetrically fixedly connected to two sealing frames 27. The sealing frame 27 is fixedly provided with an ion exchange resin 2 8. The sealing frame 27 is sealed and clamped between the two sealing end covers 23. The first solenoid valves 29 are installed on the upper and lower end walls of the heat exchange tube 9 corresponding to the fixed shell 21. The tube wall of the heat exchange tube 9 is also fixedly connected with a diverter pipe 210. Both ends of the diverter pipe 210 are equipped with a second solenoid valve 211. A spray plate 212 is fixedly installed on one side of the upper end of the inner wall of the fixed shell 21. The upper end of the spray plate 212 is fixedly connected with a liquid supply pipe 213. A liquid supply pump 214 is installed on the liquid supply pipe 213. The liquid supply pump 214 is fixedly installed on the upper end of the fixed shell 21. A reflux groove 215 is fixedly installed on the bottom of the inner wall of the fixed shell 21. The spray plate 212 and the reflux groove 215 are made of corrosion-resistant material.

[0037] The bactericide replenishing mechanism 3 is fixedly connected to the water outlet end of the heat exchange tube 9. The bactericide replenishing mechanism 3 includes a quantitative shell 31. The lower end of the quantitative shell 31 is connected to the heat exchange tube 9 through multiple dosing tubes 32. The bottom side wall of the quantitative shell 31 is fixedly connected with a replenishing pipe 33. Both the dosing pipe 32 and the replenishing pipe 33 are equipped with a one-way valve 34. The top of the quantitative shell 31 is fixedly sleeved with multiple electric telescopic rods 35. The lower movable ends of the multiple electric telescopic rods 35 are fixedly connected to the same pressurizing piston plate 36 that is sealed with the quantitative shell 31.

[0038] The real-time water pressure monitoring feedback mechanism 4 is fixedly connected to the heat exchange tube 9. The real-time water pressure monitoring feedback mechanism 4 includes a pressure cylinder 41 fixedly connected to the heat exchange tube 9. The internal sealing sleeve of the pressure cylinder 41 is provided with a pressure piston 42. The upper end of the pressure piston 42 is symmetrically fixedly connected with two synchronization rods 43. The upper ends of the two synchronization rods 43 pass through the upper end of the pressure cylinder 41 and are fixedly connected to the same pressure plate 44. The upper end of the pressure piston 42 and the top of the inner wall of the pressure cylinder 41 are fixedly provided with two pressure springs 45 sleeved on the outside of the synchronization rod 43. The upper end of the pressure cylinder 41 is also fixedly provided with a feedback shell 46 covering the outside of the synchronization rod 43 and the pressure plate 44. The top of the inner wall of the feedback shell 46 is fixedly provided with an in-place switch 47, the lower side of the inner wall of the feedback shell 46 is fixedly provided with a warning switch 48, and the outer wall of the feedback shell 46 is fixedly provided with an alarm 49.

[0039] The water pressure drop speed monitoring feedback mechanism 5 is installed on the water pressure real-time monitoring feedback mechanism 4. The water pressure drop speed monitoring feedback mechanism 5 includes a speed-increasing gearbox 51 fixedly installed on the outer wall of the feedback shell 46. A micro-generator 52 is fixedly installed on the outer wall of the speed-increasing gearbox 51. The input end of the micro-generator 52 is fixedly connected to the output end of the speed-increasing gearbox 51. The input end of the speed-increasing gearbox 51 is fixedly connected to a transmission gear 54 through a one-way ratchet assembly 53. An extension rod 55 is fixedly connected to one side of the pressure plate 44. The end of the extension rod 55 away from the pressure plate 44 passes through a strip opening opened on the side wall of the feedback shell 46 and extends out of the feedback shell 46, and is fixedly connected to a transmission rack 56 that engages with the transmission gear 54.

[0040] The alarm level division mechanism 6 is fixedly mounted on the real-time water pressure monitoring feedback mechanism 4 and is electrically connected to the water pressure drop rate monitoring feedback mechanism 5. The alarm level division mechanism 6 includes a division shell 61. A plurality of guide slide bars 62 arranged side by side are fixedly mounted on the inner wall of the division shell 61. The plurality of guide slide bars 62 are slidably sleeved on the outside with the same feedback plate 63. A plurality of compensation springs 64 sleeved on the outside of the guide slide bars 62 are fixedly mounted on the upper end of the feedback plate 63 and the top of the inner wall of the division shell 61. A force-bearing permanent magnet plate 65 is fixedly mounted on the lower end of the feedback plate 63. A force-applying electromagnetic plate 66 arranged opposite to the force-bearing permanent magnet plate 65 is fixedly mounted on the bottom of the inner wall of the division shell 61. A plurality of level switches 67 distributed up and down are also fixedly mounted on one side of the inner wall of the division shell 61. A pressing round head 68 corresponding to the level switch 67 is fixedly mounted on one side of the feedback plate 63.

[0041] The automatic water supply and pressure stabilizing mechanism 7 is fixedly connected to the heat exchange tube 9 . The automatic water supply and pressure stabilizing mechanism 7 comprises a water supply pipe 71 fixedly connected to the heat exchange tube 9 . A water supply pump 72 is installed on the water supply pipe 71 .

[0042] The working frequency self-regulating mechanism 8 is fixedly installed at the lower end of the softening water mechanism 2 and is electrically connected to the softening water mechanism 2 and the bactericide replenishing mechanism 3 respectively. The working frequency self-regulating mechanism 8 includes a regeneration frequency regulating circular shell 81 and a dosing frequency regulating circular shell 82 fixedly installed at the lower end of the fixed shell 21. The inner center of the regeneration frequency regulating circular shell 81 is rotatably connected to the first transmission shaft 83. The lower end of the regeneration frequency regulating circular shell 81 is fixedly installed with a reduction motor 84 for driving the first transmission shaft 83 to rotate. One side of the inner wall of the regeneration frequency regulating circular shell 81 is also fixedly installed. There is a regeneration trigger switch 85, and the shaft wall of the first transmission shaft 83 is fixedly provided with a first arc-shaped pressing block 86 corresponding to the position of the regeneration trigger switch 85. The second transmission shaft 87 is rotatably connected to the center of the inner wall of the dosing frequency control shell 82, and a dosing trigger switch 88 is fixedly provided on one side of the inner wall of the dosing frequency control shell 82. The shaft wall of the second transmission shaft 87 is fixedly connected with a second arc-shaped pressing block 89 corresponding to the position of the dosing trigger switch 88. The first transmission shaft 83 and the second transmission shaft 87 are connected for transmission via a reduction pulley assembly 810.

[0043] The operating principle of the present invention is described as follows: the unit body 1 exchanges heat between the water in the heat exchange tubes 9 and the geothermal heat. The heat transfer medium flowing in the heat exchange tubes 9 exchanges heat with the surrounding geothermal rock and soil. After absorbing the geothermal heat, the heat transfer medium increases in temperature and is then transported to the unit body 1 on the ground.

[0044] The heat transfer medium in the heat exchange tube 9 will pass through the ion exchange resin 28 in the softening water mechanism 2. When the heat transfer medium containing calcium, magnesium and other ions passes through the ion exchange resin 28, the sodium ions on the ion exchange resin 28 exchange with the calcium and magnesium ions in the water. The calcium and magnesium ions are adsorbed on the ion exchange resin 28, while the sodium ions on the ion exchange resin 28 enter the water, thereby reducing the content of calcium, magnesium and other ions in the water, thereby avoiding the problem of scale formed by calcium and magnesium ions clogging the heat exchange tube 9, ensuring the heat exchange efficiency, and the water temperature sensor 10 monitors the problem of the heat transfer medium in the heat exchange tube 9 after heat exchange in real time, and feeds back to the PLC controller. Specifically, when the heat exchange temperature of the heat transfer medium is higher, the PLC controller controls the reduction motor 84 to To work with greater power, the reduction motor 84 drives the first transmission shaft 83 to drive the first arc-shaped pressing block 86 to move in the regeneration frequency control shell 81 at a relatively faster speed, shortening the interval time of the first arc-shaped pressing block 86 pressing on the regeneration trigger switch 85. When the regeneration trigger switch 85 is pressed and triggered, the PLC controller controls the first solenoid valve 29 on the heat exchange tube 9 to close and opens the second solenoid valve 211 on the shunt pipe 210, so that the heat transfer medium does not pass through the softening water mechanism 2 first, but circulates through the shunt pipe 210. At this time, the PLC controller controls the four electric push rods 22 to drive the two sealing end covers 23 to move away from each other, so that the sealing end covers 23 are separated from the sealing connection with the sealing frame 27, and the drive motor 26 drives The rotating shaft 25 rotates 180 degrees, so that another clean ion exchange resin 28 moves between the two sealing end covers 23. The PLC controller controls the electric push rod 22 again to push the two sealing end covers 23 to move closer to each other, and seal and engage with the sealing frame 27 again, so that the regenerated ion exchange resin 28 is put into operation. At this time, the second solenoid valve 211 is controlled to close and the first solenoid valve 29 is opened, so that the heat transfer medium is softened again. Because when the calcium and magnesium ions adsorbed by the ion exchange resin 28 reach a certain level, the exchange capacity will be lost. At this time, the ion exchange resin 28 needs to be regenerated with brine to restore the exchange capacity of the ion exchange resin 28 and continue to soften the water. A high pH value will accelerate the exchange rate of the ion exchange resin 28. At the same time, the activity of calcium and magnesium ions in the water may also be enhanced, making the ion exchange resin 28 more easily saturated. Therefore, the water softening mechanism 2 needs to appropriately increase the regeneration frequency to ensure the softening effect of the ion exchange resin 28. When the ion exchange resin 28 that needs to be regenerated moves to the side of the fixed shell 21, the PLC controller controls the liquid supply pump 214 to work. The liquid supply pump 214 cooperates with the liquid supply pipe 213 to draw brine stored externally and transport it to the spray plate 212 to spray it on the ion exchange resin 28 that needs to be regenerated. The sodium ions in the brine are exchanged with cations such as calcium and magnesium adsorbed on the ion exchange resin 28, so that the ion exchange resin 28 can restore its exchange capacity for calcium and magnesium ions.

[0045] When the reduction motor 84 drives the first transmission shaft 83 to rotate, the first transmission shaft 83 cooperates with the reduction pulley assembly 810 to drive the second transmission shaft 87 to rotate synchronously, and the second transmission shaft 87 drives the second arc-shaped pressing block 89 to move in the dosing frequency control circular shell 82. When the second arc-shaped pressing block 89 presses on the dosing trigger switch 88, the fungicide replenishing mechanism 3 is started, and the electric telescopic rod 35 pushes the pressurizing piston plate 36 downward, and the fungicide in the quantitative shell 31 is pressed and delivered to the dosing tube 32. When the electric telescopic rod 35 drives the pressurizing piston to move upward, a negative pressure suction force is formed in the quantitative shell 31, and then the external stored fungicide is drawn into the quantitative shell 31 again through the replenishing pipe 33, waiting for the next addition of fungicide. When the water temperature sensor 10 detects that the water temperature rises after the heat transfer medium is exchanged, the working power of the reduction motor 84 is increased, and the interval time of pressing the dosing trigger switch 88 is shortened synchronously, thereby increasing the frequency of adding fungicide. First, the heat pump unit circulates The water temperature in the heat exchange tube 9 is usually 20-60°C, and this temperature range is suitable for the growth and reproduction of various bacteria. For example, mesophilic bacteria have vigorous metabolic activities in such a temperature environment and can rapidly divide and proliferate. The heat exchange tube 9 is relatively closed and has a certain water flow rate. This environment provides a place for bacteria to attach and grow. Bacteria can attach to the inner wall of the heat exchange tube 9, etc., forming a biofilm, and then continue to multiply. The biofilm formed by bacterial growth will adhere to the inner wall of the heat exchange tube 9, increase thermal resistance, and hinder heat transfer. For example, when the thickness of the biofilm reaches a certain level, it will cause the heat exchange efficiency to decrease by 10%-20%, so that the heat pump unit needs to consume more energy to achieve the same heating or cooling effect, increasing the operating cost. Therefore, it is necessary to regularly add bactericides to disinfect bacteria. When the water temperature rises, the reproduction rate of microorganisms will accelerate, and the chemical reaction rate will also increase, which will lead to faster consumption of the agent. Therefore, when the water temperature is high, it is necessary to increase the frequency of adding bactericidal agents to ensure the timeliness of the sterilization work.

[0046] The water pressure in the heat exchange tube 9 acts on the pressure piston 42. The pressure piston 42 is subjected to the water pressure to overcome the action of the pressure spring 45 to drive the synchronization rod 43 and the pressure plate 44 to move upward. Initially, the heat transfer medium is replenished by starting the water supply pump 72. The water supply pump 72 cooperates with the water supply pipe 71 to press the heat transfer medium into the heat exchange tube 9 until the pressure in the heat exchange tube 9 reaches the standard. At this time, the pressure plate 44 will press and act on the in-place switch 47. At this time, the PLC controller controls the water supply pump 72 to stop working. When the softening water mechanism 2 is regenerating, the heat transfer medium in the heat exchange tube 9 will be wasted to a certain extent, thereby affecting the water pressure in the heat exchange tube 9, so that the pressure plate 44 will stop pressing the in-place switch 47. At this time, every time the softening water mechanism 2 is regenerated, the PLC controller monitors whether the in-place switch 47 is still pressed and triggered, and automatically replenishes the heat transfer medium through the automatic water supply and pressure stabilizing mechanism 7 to ensure that the water pressure in the heat exchange tube 9 is stable.

[0047] When the heat exchange tube 9 leaks, the water pressure in the heat exchange tube 9 keeps decreasing. Then, under the action of the pressure spring 45, the pressure piston 42 drives the synchronization rod 43 and the pressure plate 44 to move downward continuously until the pressure plate 44 presses on the warning switch 48, indicating that there is a leak in the heat exchange tube 9, causing the water pressure to drop. At this time, the alarm 49 sounds and transmits a wireless signal to remind the staff to take corresponding measures. The pressure drop speed in the heat exchange tube 9 is different according to the size of the leak point. When the leak point is large and the pressure drop speed in the heat exchange tube 9 is fast, the downward movement speed of the pressure plate 44 is faster. The pressure plate 44 drives the transmission rack 56 to move downward synchronously. The meshing action of the transmission rack 56 and the transmission gear 54 drives the input end of the speed-increasing gearbox 51 to rotate, and then drives the micro generator 5 through the speed-increasing gearbox 51. 2 action, the current generated by the micro-generator 52 is transmitted to the forcing electromagnetic plate 66. Here, the micro-generator 52 is a DC generator, so it can supply DC current to the forcing electromagnetic plate 66. Specifically, when the leakage point of the heat exchange tube 9 is large, the downward movement speed of the pressure plate 44 is fast, thereby enabling the micro-generator 52 to generate a larger current in a short time, thereby enabling the forcing electromagnetic plate 66 to generate a larger magnetic force that is the same as the forced permanent magnet plate 65 when energized, thereby enabling the feedback plate 63 to eventually move up a larger distance, so that the level switch 67 on the upper side is pressed and triggered by the pressing round head 68. The PLC controller controls the alarm 49 to respond with different levels of alarm actions based on the feedback signal of the upper level switch 67 that is finally pressed, thereby reminding the staff to respond to the emergency in time and provide better information feedback.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency medium-deep geothermal heat pump unit, comprising a unit body (1) and a heat exchange pipe (9) fixedly connected to the unit body (1), wherein a water temperature sensor (10) is further installed at a corresponding water return port of the heat exchange pipe (9), characterized in that: Also includes: A water softening mechanism (2) is installed at the return water end of the heat exchange tube (9); A bactericide replenishing mechanism (3) is fixedly connected to the water outlet end of the heat exchange tube (9); A water pressure real-time monitoring feedback mechanism (4) is fixedly connected to the heat exchange tube (9); A water pressure drop rate monitoring and feedback mechanism (5) is mounted on the water pressure real-time monitoring and feedback mechanism (4); An alarm level classification mechanism (6) is fixedly mounted on the water pressure real-time monitoring feedback mechanism (4) and is electrically connected to the water pressure drop speed monitoring feedback mechanism (5); An automatic water replenishment and pressure stabilization mechanism (7) is fixedly connected to the heat exchange tube (9); A working frequency self-regulating mechanism (8) is fixedly mounted at the lower end of the water softening mechanism (2) and is electrically connected to the water softening mechanism (2) and the bactericide replenishing mechanism (3) respectively; The water pressure real-time monitoring feedback mechanism (4) includes a pressure cylinder (41) fixedly connected to the heat exchange tube (9), the inner sealing sleeve of the pressure cylinder (41) is provided with a pressure piston (42), the upper end of the pressure piston (42) is symmetrically fixedly connected with two synchronization rods (43), the upper ends of the two synchronization rods (43) pass through the upper end of the pressure cylinder (41) and are fixedly connected with the same pressure plate (44), the upper end of the pressure piston (42) and the top of the inner wall of the pressure cylinder (41) are fixedly provided with two pressure springs (45) sleeved on the outside of the synchronization rods (43), the upper end of the pressure cylinder (41) is also fixedly provided with a feedback shell (46) sleeved on the outside of the synchronization rods (43) and the pressure plate (44), the top of the inner wall of the feedback shell (46) is fixedly provided with an in-position switch (47), the lower side of the inner wall of the feedback shell (46) is fixedly provided with a warning switch (48), and the outer wall of the feedback shell (46) is fixedly provided with an alarm (49); The water pressure drop speed monitoring feedback mechanism (5) comprises a speed-increasing gearbox (51) fixedly mounted on the outer wall of the feedback housing (46); a micro-generator (52) is fixedly mounted on the outer wall of the speed-increasing gearbox (51); an input end of the micro-generator (52) is fixedly connected to an output end of the speed-increasing gearbox (51); an input end of the speed-increasing gearbox (51) is fixedly connected to a transmission gear (54) via a one-way ratchet assembly (53); an extension rod (55) is fixedly connected to one side of the pressure plate (44); an end of the extension rod (55) away from the pressure plate (44) passes through a strip-shaped opening provided in the side wall of the feedback housing (46) and extends out of the feedback housing (46), and is fixedly connected to a transmission rack (56) meshing with the transmission gear (54); The alarm level division mechanism (6) includes a division shell (61), the inner wall of the division shell (61) is fixedly provided with a plurality of guide slide bars (62) arranged side by side, the plurality of guide slide bars (62) are slidably sleeved on the outside of the same feedback plate (63), the upper end of the feedback plate (63) and the top of the inner wall of the division shell (61) are fixedly provided with a plurality of compensation springs (64) sleeved on the outside of the guide slide bars (62), the lower end of the feedback plate (63) is fixedly provided with a force-bearing permanent magnet plate (65), the bottom of the inner wall of the division shell (61) is fixedly provided with a force-applying electromagnetic plate (66) arranged opposite to the force-bearing permanent magnet plate (65), a plurality of level switches (67) distributed up and down are also fixedly provided on one side of the inner wall of the division shell (61), and a pressing round head (68) corresponding to the level switch (67) is fixedly provided on one side of the feedback plate (63); The current generated by the micro-generator (52) is transmitted to the force-adding electromagnetic plate (66).

2. A high-efficiency mid-deep geothermal heat pump unit according to claim 1, characterized in that: The softening water mechanism (2) comprises a fixed shell (21) fixedly connected to the return water end of the heat exchange tube (9), two electric push rods (22) are symmetrically fixedly connected to the upper and lower ends of the fixed shell (21), the movable ends of the two electric push rods (22) on the same side are fixedly connected to the same sealing end cover (23), the sealing end cover (23) and the heat exchange tube (9) are connected through an elastic bellows (24), the inner wall of the fixed shell (21) is rotatably connected to a vertically arranged rotating shaft (25), the outer wall of the fixed shell (21) is fixedly provided with a driving motor (26) for driving the rotating shaft (25) to rotate, the shaft wall of the rotating shaft (25) is symmetrically fixedly provided with two sealing frames (27), and the sealing frame (27) is fixedly provided with an ion exchange resin (28) ), the sealing frame (27) is sealed and clamped between the two sealing end covers (23), the heat exchange tube (9) is provided with a first solenoid valve (29) on the upper and lower ends of the tube wall corresponding to the fixed shell (21), the tube wall of the heat exchange tube (9) is also fixedly connected with a diversion tube (210), and the two ends of the diversion tube (210) are provided with a second solenoid valve (211), a spray plate (212) is fixedly provided on one side of the upper end of the inner wall of the fixed shell (21), the upper end of the spray plate (212) is fixedly connected with a liquid supply tube (213), a liquid supply pump (214) is provided on the liquid supply tube (213), and the liquid supply pump (214) is fixedly provided on the upper end of the fixed shell (21), and a reflux groove (215) is fixedly provided on the bottom of the inner wall of the fixed shell (21).

3. A high-efficiency mid-deep geothermal heat pump unit according to claim 1, characterized in that: The bactericide replenishing mechanism (3) comprises a quantitative shell (31), the lower end of the quantitative shell (31) is connected to the heat exchange tube (9) via a plurality of dosing tubes (32), the bottom side wall of the quantitative shell (31) is fixedly connected to a replenishing tube (33), and both the dosing tube (32) and the replenishing tube (33) are provided with a one-way valve (34), and the top of the quantitative shell (31) is fixedly sleeved with a plurality of electric telescopic rods (35), and the lower movable ends of the plurality of electric telescopic rods (35) are fixedly connected to a same pressurizing piston plate (36) which is sealed with the quantitative shell (31).

4. A high-efficiency mid-deep geothermal heat pump unit according to claim 1, characterized in that: The automatic water replenishment and pressure stabilization mechanism (7) comprises a water replenishment pipe (71) fixedly connected to the heat exchange pipe (9), and a water replenishment pump (72) is installed on the water replenishment pipe (71).

5. A high-efficiency mid-deep geothermal heat pump unit according to claim 2, characterized in that: The working frequency self-regulating mechanism (8) comprises a regeneration frequency regulating circular shell (81) and a dosing frequency regulating circular shell (82) fixedly mounted at the lower end of the fixed shell (21); a first transmission shaft (83) is rotatably connected to the inner center of the regeneration frequency regulating circular shell (81); a reduction motor (84) for driving the first transmission shaft (83) to rotate is fixedly mounted at the lower end of the regeneration frequency regulating circular shell (81); a regeneration trigger switch (85) is also fixedly mounted on one side of the inner wall of the regeneration frequency regulating circular shell (81); and the shaft wall of the first transmission shaft (83) is fixedly mounted. A first arc-shaped pressing block (86) is provided corresponding to the position of the regeneration trigger switch (85); a second transmission shaft (87) is rotatably connected to the center of the inner wall of the dosing frequency control shell (82); a dosing trigger switch (88) is fixedly provided on one side of the inner wall of the dosing frequency control shell (82); a second arc-shaped pressing block (89) is fixedly connected to the shaft wall of the second transmission shaft (87) corresponding to the position of the dosing trigger switch (88); and the first transmission shaft (83) and the second transmission shaft (87) are connected in transmission via a reduction pulley assembly (810).

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