High-efficiency middle-deep layer geothermal heat pump unit

Abstract

The invention belongs to the technical field of heat pump units, and particularly relates to a high-efficiency middle-deep layer geothermal heat pump unit which comprises a unit body and a heat exchange pipe fixedly communicated to the unit body, and a water temperature sensor is further arranged at the position, corresponding to a water return opening, of the heat exchange pipe. The system further comprises a water softening mechanism, a bactericide supplementing mechanism, a water pressure real-time monitoring feedback mechanism, a water pressure descending speed monitoring feedback mechanism, an alarm grade dividing mechanism, an automatic water supplementing and pressure stabilizing mechanism and a working frequency self-regulating mechanism. Heat exchange water can be automatically softened, the content of ions such as calcium and magnesium is reduced, scaling is prevented, the heat exchange efficiency is maintained, the service life of equipment is prolonged, and cost is reduced; the regeneration frequency of the water softening mechanism and the bactericide adding frequency can be automatically regulated and controlled according to the water temperature, and the softening and sterilizing effects are guaranteed; and leakage of the heat exchange tube can be effectively monitored, graded warning is performed according to the size of leakage points, workers can respond and process in time conveniently, and the fault risk is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat pump units, and particularly relates to a high-efficiency medium-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 technologies, and then uses heat pump technology to elevate low-temperature heat energy into utilizable high-temperature heat energy to meet the heating and cooling requirements of buildings.

[0003] In the medium-deep geothermal heat pump unit, calcium and magnesium ions existing in the circulating water for circulating heat exchange will form poorly soluble salts under certain conditions, such as calcium carbonate, magnesium carbonate, calcium sulfate, etc. As the circulating water continuously evaporates and concentrates, the concentrations of these salts gradually increase. When they exceed their solubility in water, they will precipitate out of the water and adhere to the inner wall of the circulating heat exchange pipe, forming scale. In addition, the change in water temperature will also affect the solubility of salts. When hot water flows through the heat exchange pipe, the water temperature decreases, the solubility of salts decreases, and the precipitation and scaling phenomenon is more likely to occur. The occurrence of scaling will cause the heat exchange pipe to be blocked, and further lead to the problem of decreased heat exchange efficiency. Therefore, it is necessary to regularly stop the machine to clean the heat exchange pipe, but such a 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 medium-deep geothermal heat pump unit for the above problems.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A high-efficiency medium-deep geothermal heat pump unit includes a unit main body and a heat exchange pipe fixedly connected to the unit main body. A water temperature sensor is also installed at the corresponding water return port of the heat exchange pipe. The unit further includes: A softened water mechanism installed at the water return end of the heat exchange pipe; A bactericide replenishing mechanism fixedly connected to the water outlet end of the heat exchange pipe; A water pressure real-time monitoring and feedback mechanism fixedly connected to the heat exchange pipe; A water pressure drop speed monitoring and feedback mechanism installed on the water pressure real-time monitoring and feedback mechanism; An alarm level classification mechanism fixedly installed on the water pressure real-time monitoring and feedback mechanism and electrically connected to the water pressure drop speed monitoring and feedback mechanism; An automatic water replenishing and pressure stabilizing mechanism fixedly connected to the heat exchange pipe; A working frequency self-regulation mechanism fixedly installed at the lower end of the softened water mechanism and electrically connected to the softened water mechanism and the bactericide replenishing mechanism respectively.

[0006] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the softened water mechanism includes a fixed shell fixedly connected to the return water end of the heat exchange pipe. Two electric push rods are symmetrically and fixedly connected to both the upper and lower ends of the fixed shell. The moving ends of the two electric push rods on the same side are fixedly connected to the same sealing end cover. The sealing end cover and the heat exchange pipe are connected through an elastic corrugated pipe. The inner wall of the fixed shell is rotatably connected to a vertically arranged rotating shaft. A driving motor for driving the rotating shaft to rotate is fixedly installed on the outer wall of the fixed shell. Two sealing frames are symmetrically and fixedly connected to the shaft wall of the rotating shaft. Ion exchange resins are fixedly installed in the sealing frames. The sealing frames are hermetically clamped between the two sealing end covers. First solenoid valves are installed on the pipe walls of the upper and lower ends of the heat exchange pipe corresponding to the fixed shell. A shunt pipe is also fixedly connected to the pipe wall of the heat exchange pipe. Second solenoid valves are installed at both ends of the shunt pipe. A spray tray is fixedly installed on one side of the upper end of the inner wall of the fixed shell. A liquid supply pipe is fixedly connected to the upper end of the spray tray. A liquid supply pump is installed on the liquid supply pipe. The liquid supply pump is fixedly installed on the upper end of the fixed shell. A return flow tank is fixedly installed at the bottom of the inner wall of the fixed shell.

[0007] 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 pipe through a plurality of medicine adding pipes. A replenishing pipe is fixedly connected to the bottom side wall of the quantitative shell. Check valves are installed on both the medicine adding pipes and the replenishing pipe. A plurality of electric telescopic rods are fixedly inserted into the top of the quantitative shell. The lower moving ends of the plurality of electric telescopic rods are fixedly connected to the same pressurizing piston plate that is hermetically sleeved with the quantitative shell.

[0008] In the above-mentioned high-efficiency medium-deep geothermal heat pump unit, the water pressure real-time monitoring and feedback mechanism includes a pressure cylinder fixedly connected to the heat exchange pipe. A pressure piston is hermetically sleeved inside the pressure cylinder. Two synchronous rods are symmetrically and fixedly connected to the upper end of the pressure piston. The upper ends of the two synchronous rods penetrate through the upper end of the pressure cylinder and are fixedly connected to the same pressure plate. Two pressure springs sleeved on the synchronous rods are fixedly installed between the upper end of the pressure piston and the inner wall top of the pressure cylinder. A feedback shell covering the synchronous rods and the pressure plate is also fixedly installed at the upper end of the pressure cylinder. A position switch is fixedly installed on the inner wall top of the feedback shell. A warning switch is fixedly installed on the lower side of the inner wall of the feedback shell. An alarm is fixedly installed on the outer wall of the feedback shell.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: 1. By providing a unit main body, a softened water mechanism, heat exchange tubes, and a working frequency self-regulation mechanism, it is possible to automatically soften the heat exchange water, effectively reduce the content of calcium, magnesium and other ions in the water, prevent scale formation, maintain the heat transfer efficiency of the heat exchange tubes and the smoothness of the water flow channels, extend the service life of the pipelines and equipment, reduce the operating costs, and can automatically regulate the replacement and regeneration frequency of the softened water mechanism according to the water temperature after heat exchange. The higher the water temperature, the higher the set replacement and regeneration frequency to ensure the softening effect.

[0014] 2. By providing a bactericide supplement mechanism, heat exchange tubes, and a working frequency self-regulation mechanism, it is possible to automatically add bactericides to the heat exchange water body, avoid the problem that the biofilm formed by bacterial growth will adhere to the inner wall of the heat exchange tubes, increase the thermal resistance, and hinder the heat transfer, thereby reducing the heat exchange efficiency. And it can automatically regulate the addition frequency of the bactericide based on the water temperature after heat exchange. The higher the water temperature, the higher the addition frequency of the bactericide to ensure the timeliness of disinfection.

[0015] 3. By providing a real-time water pressure monitoring and feedback mechanism, a water pressure drop rate monitoring and feedback mechanism, and an alarm level classification mechanism, it is possible to effectively monitor whether there is a leakage problem in the heat exchange tubes, and can give different levels of warning feedback based on the size of the leakage point to remind the staff to make better responses and treatments to avoid bigger problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a front structural schematic diagram of the present invention; Figure 3 is a sectional structural schematic diagram of the softened water mechanism of the present invention; Figure 4 is a sectional structural schematic diagram of the bactericide supplement mechanism of the present invention; Figure 5 is a sectional structural schematic diagram of the real-time water pressure monitoring and feedback mechanism of the present invention; Figure 6 is a structural schematic diagram of the water pressure drop rate monitoring and feedback mechanism of the present invention; Figure 7 is a sectional structural schematic diagram of the alarm level classification mechanism of the present invention; Figure 8 is a structural schematic diagram of the automatic water replenishment and pressure stabilization mechanism of the present invention; Figure 9 is a sectional structural schematic diagram of the working frequency self-regulation mechanism of the present invention.

[0017] In the figure: 1 unit main body, 2 softened water mechanism, 21 fixed shell, 22 electric push rod, 23 sealing end cover, 24 elastic corrugated pipe, 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 tray, 213 liquid supply pipe, 214 liquid supply pump, 215 return tank, 3 bactericide replenishing mechanism, 31 quantitative shell, 32 chemical addition pipe, 33 replenishing pipe, 34 one-way valve, 35 electric telescopic rod, 36 pressurizing piston plate, 4 water pressure real-time monitoring and feedback mechanism, 41 pressure cylinder, 42 pressure piston, 43 synchronizing 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 and feedback mechanism, 51 speed increasing gear box, 52 micro generator, 53 one-way ratchet assembly, 54 transmission gear, 55 extension rod, 56 transmission rack, 6 alarm level classification mechanism, 61 classification shell, 62 guiding slide bar, 63 feedback plate, 64 compensation spring, 65 force-bearing permanent magnet plate, 66 force-applying electromagnetic plate, 67 level switch, 68 pressing round head, 7 automatic water replenishing and pressure stabilizing mechanism, 71 water replenishing pipe, 72 water replenishing pump, 8 working frequency self-regulating mechanism, 81 regeneration frequency regulating circular shell, 82 chemical addition frequency regulating circular shell, 83 first transmission shaft, 84 reduction motor, 85 regeneration trigger switch, 86 first arc-shaped pressing block, 87 second transmission shaft, 88 chemical addition trigger switch, 89 second arc-shaped pressing block, 810 reduction pulley assembly, 9 heat exchange tube, 10 water temperature sensor. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] As Figures 1-9 shown, a high-efficiency medium-deep geothermal heat pump unit includes a unit main body 1 and a heat exchange tube 9 fixedly connected to the unit main body 1. A water temperature sensor 10 is also installed at the corresponding return water port of the heat exchange tube 9. It further includes: The softened water mechanism 2 is installed at the return water end of the heat exchange tube 9. The softened 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 and fixedly connected to both the upper and lower ends of the fixed shell 21. The moving 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 corrugated pipe 24. A vertically arranged rotating shaft 25 is rotatably connected to the inner wall of the fixed shell 21. A driving motor 26 for driving the rotating shaft 25 to rotate is fixedly installed on the outer wall of the fixed shell 21. Two sealing frames 27 are symmetrically and fixedly connected to the shaft wall of the rotating shaft 25. Ion exchange resins 28 are fixedly installed in the sealing frames 27. The sealing frames 27 are hermetically clamped between the two sealing end covers 23. First solenoid valves 29 are installed on the tube walls of the upper and lower ends of the heat exchange tube 9 corresponding to the fixed shell 21. A shunt pipe 210 is fixedly connected to the tube wall of the heat exchange tube 9. Second solenoid valves 211 are installed at both ends of the shunt pipe 210. A spray tray 212 is fixedly installed on one side of the upper end of the inner wall of the fixed shell 21. A liquid supply pipe 213 is fixedly connected to the upper end of the spray tray 212. 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 return flow tank 215 is fixedly installed at the bottom of the inner wall of the fixed shell 21. The spray tray 212 and the return flow tank 215 are made of corrosion-resistant materials.

[0020] 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 a plurality of medicine adding pipes 32. A replenishing pipe 33 is fixedly connected to the bottom side wall of the quantitative shell 31. Check valves 34 are installed on both the medicine adding pipes 32 and the replenishing pipe 33. A plurality of electric telescopic rods 35 are fixedly inserted into the top of the quantitative shell 31. The lower moving ends of the plurality of electric telescopic rods 35 are fixedly connected to the same pressurizing piston plate 36 that is hermetically sleeved with the quantitative shell 31.

[0021] The water pressure real-time monitoring and feedback mechanism 4 is fixedly connected to the heat exchange tube 9. The water pressure real-time monitoring and feedback mechanism 4 includes a pressure cylinder 41 fixedly connected to the heat exchange tube 9. A pressure piston 42 is hermetically sleeved inside the pressure cylinder 41. Two synchronous rods 43 are symmetrically and fixedly connected to the upper end of the pressure piston 42. The upper ends of the two synchronous rods 43 penetrate through the upper end of the pressure cylinder 41 and are fixedly connected to the same pressure plate 44. Two pressure springs 45 sleeved on the synchronous rods 43 are fixedly installed between the upper end of the pressure piston 42 and the inner wall top of the pressure cylinder 41. A feedback shell 46 covering the synchronous rods 43 and the pressure plate 44 is also fixedly installed at the upper end of the pressure cylinder 41. A position switch 47 is fixedly installed on the inner wall top of the feedback shell 46. A warning switch 48 is fixedly installed on the lower side of the inner wall of the feedback shell 46. An alarm 49 is fixedly installed on the outer wall of the feedback shell 46.

[0022] The water pressure drop rate monitoring and feedback mechanism 5 is installed on the real-time water pressure monitoring and feedback mechanism 4. The water pressure drop rate monitoring and feedback mechanism 5 includes a speed increasing gearbox 51 fixedly installed on the outer wall of the feedback housing 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 with a transmission gear 54 through a one-way ratchet assembly 53. One side of the pressure plate 44 is fixedly connected with an extension rod 55. The end of the extension rod 55 far from the pressure plate 44 passes through a strip-shaped opening formed in the side wall of the feedback housing 46 and extends out of the feedback housing 46, and is fixedly connected with a transmission rack 56 meshing with the transmission gear 54.

[0023] The alarm level classification mechanism 6 is fixedly installed on the real-time water pressure monitoring and feedback mechanism 4 and is electrically connected to the water pressure drop rate monitoring and feedback mechanism 5. The alarm level classification mechanism 6 includes a classification housing 61. A plurality of guide slide rods 62 arranged side by side are fixedly installed on the inner wall of the classification housing 61. The same feedback plate 63 is slidably sleeved outside the plurality of guide slide rods 62. A plurality of compensation springs 64 sleeved outside the guide slide rods 62 are fixedly installed between the upper end of the feedback plate 63 and the top of the inner wall of the classification housing 61. A force-receiving permanent magnet plate 65 is fixedly installed at the lower end of the feedback plate 63. An exciting electromagnetic plate 66 arranged opposite to the force-receiving permanent magnet plate 65 is fixedly installed at the bottom of the inner wall of the classification housing 61. A plurality of level switches 67 arranged vertically are also fixedly installed on one side of the inner wall of the classification housing 61. A pressing round head 68 arranged corresponding to the level switches 67 is fixedly installed on one side of the feedback plate 63.

[0024] The automatic water replenishment and pressure stabilization mechanism 7 is fixedly communicated with the heat exchange tube 9. The automatic water replenishment and pressure stabilization mechanism 7 includes a water replenishment pipe 71 fixedly communicated with the heat exchange tube 9. A water replenishment pump 72 is installed on the water replenishment pipe 71.

[0025] 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.

[0026] 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. 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 will 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, and further avoiding the problem that the water scale formed by calcium and magnesium ions will block 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 it back to the PLC controller. Specifically, when the heat transfer medium has a higher heat exchange temperature, the PLC controller controls the reduction motor 84 to work at a 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 regulation circular 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 disengaged from the sealing connection with the sealing frame 27. The driving motor 26 drives the rotating shaft 25 to rotate 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 rods 22 again to push the two sealing end covers 23 to move closer to each other and be hermetically clamped with the sealing frame 27 again, so that the ion exchange resin 28 after regeneration treatment is put into work. At this time, control the second solenoid valve 211 to close and open the first solenoid valve 29, so that the heat transfer medium resumes the softening treatment work. Because when the calcium and magnesium ions adsorbed by the ion exchange resin 28 reach a certain degree, it will lose the exchange ability. At this time, the ion exchange resin 28 needs to be regenerated with brine to restore the exchange ability of the ion exchange resin 28 and continue the work of softening water. And the increase in water temperature will accelerate the exchange speed of the ion exchange resin 28. At the same time, the activity of calcium and magnesium ions in the water may also increase, resulting in the ion exchange resin 28 being more likely to be saturated. Therefore, the softening water 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 one side of the fixed shell 21, at this time, 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 and transport the brine stored externally to the spray disc 212 and spray it on the ion exchange resin 28 that needs to be regenerated. The sodium ions in the brine exchange with the calcium, magnesium and other cations adsorbed on the ion exchange resin 28, so that the ion exchange resin 28 restores the exchange ability for calcium and magnesium ions; When the reduction motor 84 drives the first transmission shaft 83 to rotate self - sufficiently, the first transmission shaft 83 cooperates with the reduction pulley assembly 810 to drive the second transmission shaft 87 to rotate synchronously. The second transmission shaft 87 drives the second arc - shaped pressing block 89 to move within the chemical - adding frequency control circular shell 82. When the second arc - shaped pressing block 89 presses on the chemical - adding trigger switch 88, the bactericide replenishing mechanism 3 is started at this time. The electric telescopic rod 35 pushes the pressurizing piston plate 36 downward, and the bactericide in the quantitative shell 31 is pressed into the heat - exchange tube 9 through the chemical - adding 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 bactericide stored externally is drawn into the quantitative shell 31 again through the replenishing tube 33, waiting for the next bactericide addition. And when the water - temperature sensor 10 monitors that the water temperature after the heat - transfer medium exchanges heat increases, the working power of the reduction motor 84 is increased at this time. Consequently, the interval time when the chemical - adding trigger switch 88 is pressed and triggered is shortened synchronously, increasing the bactericide addition frequency. First of all, the water temperature in the heat - exchange tube 9 of the heat - pump unit usually ranges from 20 to 60 °C. 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 divide and proliferate rapidly. Moreover, the inside of the heat - exchange tube 9 is relatively enclosed and has a certain water flow velocity. 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 continuously multiplying. The biofilm formed by the growth of bacteria will attach to the inner wall of the heat - exchange tube 9, increasing the thermal resistance and hindering the heat transfer. For example, when the biofilm thickness reaches a certain level, the heat - exchange efficiency will be reduced by 10% - 20%, causing the heat - pump unit 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 kill bacteria. When the water temperature rises, the reproduction rate of microorganisms will accelerate, and at the same time, the chemical reaction rate will also increase, which will lead to the accelerated consumption of the medicament. Therefore, when the water temperature is relatively high, it is necessary to increase the addition frequency of the bactericidal medicament to ensure the timeliness of the sterilization work; The water pressure inside the heat exchange tube 9 acts on the pressure piston 42. The pressure piston 42 is driven by the water pressure to overcome the action of the pressure spring 45, driving the synchronous rod 43 and the pressure plate 44 to move upward. Initially, the heat transfer medium is supplemented by starting the makeup water pump 72. The makeup water pump 72 cooperates with the makeup water pipe 71 to press the heat transfer medium into the heat exchange tube 9. When the pressure in the heat exchange tube 9 reaches the standard, at this time, the pressure plate 44 presses on the in-place switch 47. At this time, the PLC controller controls the makeup water pump 72 to stop working. When the softening water mechanism 2 is in the regeneration operation, it will cause a certain waste of the heat transfer medium in the heat exchange tube 9, thereby affecting the water pressure in the heat exchange tube 9, causing the pressure plate 44 to disengage from the pressing trigger of the in-place switch 47. At this time, each time the softening water mechanism 2 performs a regeneration action, the PLC controller monitors whether the in-place switch 47 is still pressed and triggered, and automatically supplements the heat transfer medium through the automatic makeup water and pressure stabilizing mechanism 7 to ensure the stability of the water pressure in the heat exchange tube 9; When a leakage problem occurs in the heat exchange tube 9, the water pressure inside the heat exchange tube 9 continuously drops. Then, under the action of the pressure spring 45, the pressure piston 42 drives the synchronous rod 43 and the pressure plate 44 to continuously move downward. When the pressure plate 44 presses on the warning switch 48, it indicates that there is a leakage in the heat exchange tube 9 resulting in a drop in water pressure. At this time, the alarm 49 sounds and emits a wireless signal to remind the staff to take corresponding measures. Moreover, according to the size of the leakage point, the pressure drop rate inside the heat exchange tube 9 is also different. When the leakage point is large and the pressure drop rate inside 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. Through the meshing action of the transmission rack 56 and the transmission gear 54, the input end of the speed increasing gearbox 51 is driven to rotate. Then, the speed increasing gearbox 51 drives the micro generator 52 to act. The current generated by the micro generator 52 is transmitted to the boosting electromagnetic plate 66. Here, the micro generator 52 is a DC generator, so it can supply DC current to the boosting electromagnetic plate 66. Specifically, when the leakage point of the heat exchange tube 9 is large, causing the downward movement speed of the pressure plate 44 to be fast, the micro generator 52 can generate a larger current in a short time. Then, the boosting electromagnetic plate 66 is energized to generate a larger magnetic field identical to that of the force receiving permanent magnet plate 65. As a result, the feedback plate 63 can finally move upward a greater distance, causing the upper-level switch 67 to be pressed and triggered by the pressing head 68. The PLC controller controls the alarm 49 to respond with different levels of alarm actions based on the signal feedback from the finally pressed upper-level switch 67, thereby reminding the staff to make timely emergency responses and providing better information feedback.

[0027] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency medium-deep geothermal heat pump unit, comprising a unit main body (1) and a heat exchange pipe (9) fixedly connected to the unit main body (1). A water temperature sensor (10) is also installed at the corresponding water return port of the heat exchange pipe (9). It is characterized in that, It also includes: A softened water mechanism (2), installed at the return water end of the heat exchange tube (9); A bactericide replenishing mechanism (3), fixedly connected to the water outlet end of the heat exchange tube (9); A water pressure real-time monitoring and feedback mechanism (4), fixedly connected to the heat exchange tube (9); A water pressure drop rate monitoring and feedback mechanism (5), installed on the water pressure real-time monitoring and feedback mechanism (4); An alarm level classification mechanism (6), fixedly installed on the water pressure real-time monitoring and feedback mechanism (4) and electrically connected to the water pressure drop rate monitoring and feedback mechanism (5); An automatic water replenishing and pressure stabilizing mechanism (7), fixedly connected to the heat exchange tube (9); A working frequency self-regulating mechanism (8), fixedly installed at the lower end of the softened water mechanism (2) and electrically connected to the softened water mechanism (2) and the bactericide replenishing mechanism (3) respectively.

2. The high-efficiency medium-deep geothermal heat pump unit according to claim 1, wherein The softened 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 and fixedly connected to both the upper and lower ends of the fixed shell (21). The moving 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 corrugated pipe (24). A vertically arranged rotating shaft (25) is rotatably connected to the inner wall of the fixed shell (21). A driving motor (26) for driving the rotation of the rotating shaft (25) is fixedly installed on the outer wall of the fixed shell (21). Two sealing frames (27) are symmetrically and fixedly connected to the shaft wall of the rotating shaft (25). Ion exchange resins (28) are fixedly installed in the sealing frames (27). The sealing frames (27) are hermetically clamped between the two sealing end covers (23). First solenoid valves (29) are installed on the tube walls of the heat exchange tube (9) corresponding to the upper and lower ends of the fixed shell (21). A shunt tube (210) is also fixedly connected to the tube wall of the heat exchange tube (9). Second solenoid valves (211) are installed at both ends of the shunt tube (210). A spray disc (212) is fixedly installed on one side of the upper end of the inner wall of the fixed shell (21). A liquid supply pipe (213) is fixedly connected to the upper end of the spray disc (212). A liquid supply pump (214) is installed on the liquid supply pipe (213). The liquid supply pump (214) is fixedly installed at the upper end of the fixed shell (21). A return flow tank (215) is fixedly installed at the bottom of the inner wall of the fixed shell (21).

3. The high-efficiency medium and deep geothermal heat pump unit according to claim 1, wherein, 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 a plurality of medicine adding tubes (32). A replenishing tube (33) is fixedly connected to the bottom side wall of the quantitative shell (31). Check valves (34) are installed on both the medicine adding tubes (32) and the replenishing tube (33). A plurality of electric telescopic rods (35) are fixedly inserted into the top of the quantitative shell (31). The lower moving ends of the plurality of electric telescopic rods (35) are fixedly connected to the same pressurizing piston plate (36) that is hermetically sleeved with the quantitative shell (31).

4. The high-efficiency medium-deep geothermal heat pump unit according to claim 1, characterized in that The real-time water pressure monitoring and feedback mechanism (4) includes a pressure cylinder (41) fixedly connected to the heat exchange tube (9). A pressure piston (42) is hermetically sleeved inside the pressure cylinder (41). Two synchronizing rods (43) are symmetrically and fixedly connected to the upper end of the pressure piston (42). The upper ends of the two synchronizing rods (43) penetrate through the upper end of the pressure cylinder (41) and are fixedly connected to the same pressure plate (44). Two pressure springs (45) sleeved on the synchronizing rods (43) are fixedly arranged between the upper end of the pressure piston (42) and the top inner wall of the pressure cylinder (41). A feedback housing (46) covering the synchronizing rods (43) and the pressure plate (44) is also fixedly arranged at the upper end of the pressure cylinder (41). A position switch (47) is fixedly arranged at the top inner wall of the feedback housing (46). A warning switch (48) is fixedly arranged at the lower side of the inner wall of the feedback housing (46). An alarm (49) is fixedly arranged on the outer wall of the feedback housing (46).

5. A high-efficiency medium-deep geothermal heat pump unit according to claim 4, characterized in that, The water pressure drop speed monitoring and feedback mechanism (5) includes an acceleration gearbox (51) fixedly arranged on the outer wall of the feedback housing (46). A micro generator (52) is fixedly arranged on the outer wall of the acceleration gearbox (51). The input end of the micro generator (52) is fixedly connected to the output end of the acceleration gearbox (51). The input end of the acceleration 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) penetrates through the side wall of the feedback housing (46) through a strip-shaped opening and extends out of the feedback housing (46), and is fixedly connected to a transmission rack (56) meshing with the transmission gear (54).

6. The high-efficiency medium and deep geothermal heat pump unit according to claim 5, characterized in that, The alarm level classification mechanism (6) includes a classification housing (61). A plurality of guide sliding rods (62) arranged side by side are fixedly arranged on the inner wall of the classification housing (61). The same feedback plate (63) is slidably sleeved on the plurality of guide sliding rods (62). A plurality of compensation springs (64) sleeved on the guide sliding rods (62) are fixedly arranged between the upper end of the feedback plate (63) and the top inner wall of the classification housing (61). A force-receiving permanent magnet plate (65) is fixedly arranged at the lower end of the feedback plate (63). A force-applying electromagnetic plate (66) opposite to the force-receiving permanent magnet plate (65) is fixedly arranged at the bottom inner wall of the classification housing (61). A plurality of level switches (67) arranged vertically are also fixedly arranged on one side of the inner wall of the classification housing (61). A pressing round head (68) corresponding to the level switches (67) is fixedly arranged on one side of the feedback plate (63).

7. An efficient medium and deep geothermal heat pump unit according to claim 1, characterized in that The automatic water replenishing and pressure stabilizing mechanism (7) includes a water replenishing pipe (71) fixedly connected to the heat exchange tube (9). A water replenishing pump (72) is arranged on the water replenishing pipe (71).

8. The high-efficiency medium-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).

Images