A ground source heat pump unit utilizing geothermal energy

Abstract

The present invention relates to a ground source heat pump unit utilizing geothermal energy in the technical field related to heat pump units. Through the setting of a joint protection unit, on the one hand, it can protect the joints of the heat exchange coil, preventing them from directly contacting the soil and reducing the possibility of leakage at the interfaces. On the other hand, in cooperation with the water seepage monitoring unit and the fixed-point monitoring unit arranged in the joint protection unit, it can clearly distinguish whether the water seepage of the heat exchange coil is from above or below. And in the case of water seepage at the connection of the lower pipe, the seepage water will first fall on the monitoring ring, triggering the pressure sensor therein, thereby realizing the positioning of the leakage point, so that targeted excavation and repair can be carried out. Compared with the large-area excavation and repair in the prior art, the repair difficulty is greatly reduced, while the repair efficiency is improved and the investment in maintenance costs is reduced.

Description

Technical Field

[0001] A soil source heat pump unit involved in the present invention, in particular, a soil source heat pump unit using geothermal energy in the technical field related to heat pump units. Background Art

[0002] The ground source heat pump system is a heat pump technology that has gradually emerged with the emergence of global energy crises and environmental problems. It is a heat pump air-conditioning system that realizes the transfer of shallow geothermal energy to high-level energy by inputting a small amount of high-level energy. From the perspective of energy, it utilizes the heat in normal temperature soil (groundwater), which is an inexhaustible renewable energy source, providing a free and efficient energy storage source for the air-conditioning system.

[0003] In the pure water circulation geothermal and auxiliary heat pump air-conditioning system disclosed in Chinese Patent CN102213469B and the combined deep geothermal heat pump system disclosed in Chinese Patent CN105716328A, the disk-shaped heat exchanger used for underground heat exchange is generally buried underground. Due to the humid underground environment, leakage is likely to occur at the interfaces after long-term use, affecting the heat exchange efficiency. Moreover, the burial depth of the disk-shaped heat exchanger even reaches 30 to 100 meters, making it difficult to identify the leakage point. Often, large-area excavation is required for maintenance. In particular, the interface under the heat exchange coil is deeper underground, and the difficulty of excavation and maintenance is significantly greater than that of the upper part, resulting in high maintenance difficulty, low efficiency, and high maintenance cost. Summary of the Invention

[0004] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that when a leakage point appears, it is difficult to locate the point, resulting in the need for large-area excavation for maintenance, leading to greater maintenance difficulty, low efficiency, and high maintenance cost.

[0005] To solve the above problems, the present invention provides a soil source heat pump unit using geothermal energy, including a heat pump machine with a monitoring center and heat exchange coils buried underground. The heat pump machine includes an evaporator, a compressor connected to the evaporator, a condenser, and a four-way valve. The liquid inlets of the evaporator and the compressor are both connected to the four-way valve through main pipelines. The four-way valve and the heat exchange coils, the drain outlet of the evaporator and the heat exchange coils, and the drain outlet of the condenser and the heat exchange coils are all connected through secondary pipelines. Solenoid valves are installed on the secondary pipelines connected to the drain outlets of the evaporator and the condenser. The exhaust port of the evaporator and the compressor are connected through a branch pipeline.

[0006] The heat exchange coil includes a plurality of vertical pipes, a plurality of upper bending sections respectively and fixedly connected between the upper ends of adjacent two vertical pipes, and a plurality of lower bending sections respectively and fixedly connected between the lower ends of adjacent two vertical pipes. The plurality of lower bending sections and upper bending sections are mutually offset. A joint protection unit is provided outside the heat exchange coil. The joint protection unit includes an upper liquid guide cover fixedly sleeved outside the plurality of upper bending sections, a lower liquid receiving cover fixedly sleeved outside the plurality of lower bending sections, and a liquid guide pipe fixedly connected between the upper liquid guide cover and the lower liquid receiving cover. A water seepage monitoring unit is installed inside the lower liquid receiving cover, and a fixed-point monitoring unit is also provided at the lower bending section. Both the fixed-point monitoring unit and the water seepage monitoring unit are in signal connection with the monitoring center.

[0007] In the above-mentioned ground source heat pump unit using geothermal energy, through the settings of the fixed-point monitoring unit and the water seepage monitoring unit, it can be clearly distinguished whether the water seepage of the heat exchange coil is from the upper part or the lower part. And for the case of leakage in the lower part, the leakage point can also be located, so that fixed-point excavation and repair can be carried out. Compared with the large-area excavation and repair of the prior art, the repair difficulty is greatly reduced, the repair efficiency is improved at the same time, and the investment in maintenance cost is reduced.

[0008] As a further improvement of the present application, the lower end of the upper liquid guide cover is a conical structure, and the lowest part of the upper liquid guide cover is mutually offset with the lower bending section. The outer layer of the liquid guide pipe is wrapped with an outer protective layer, and the upper and lower ends of the outer protective layer are respectively fixedly connected with the upper liquid guide cover and the lower liquid receiving cover.

[0009] As a supplementary further improvement of the present application, the water seepage monitoring unit includes a laser emitter and a laser receiver respectively installed on the left and right inner walls of the lower liquid receiving cover, and a sensing block installed at the bottom of the lower liquid receiving cover. The sensing block is located directly below the liquid guide pipe.

[0010] As a supplementary further improvement of the present application, the sensing block includes a lining plate fixedly connected to the bottom of the lower liquid receiving cover and a liquid absorption layer fixedly connected to the upper end of the lining plate. The laser beam emitted by the laser emitter intersects with the liquid absorption layer.

[0011] As a supplementary further improvement of the present application, a plurality of sealing doors respectively corresponding to the bending parts of the heat exchange coil are provided on the sides of the upper liquid guide cover and the lower liquid receiving cover. Both the upper liquid guide cover and the lower liquid receiving cover are of hard transparent structures.

[0012] As a supplementary further improvement of the present application, the fixed-point monitoring unit includes a horizontal support rod fixedly connected to adjacent two vertical pipes, a vertical support rod fixedly connected to the lower end of the horizontal support rod, and a monitoring ring sleeved on the middle part of the lower bending section. The monitoring ring is fixedly connected to the vertical support rod.

[0013] As a supplement to the further improvement of the present application, the monitoring ring includes an outer ring cover, an inner magnetic ring located inside the outer ring cover, and a pressure sensor installed at the inner bottom end of the outer ring cover. The left and right outer edges of the inner magnetic ring are in contact with the inner wall of the outer ring cover. The pressure sensor is signal-connected to the monitoring center. The outer ring cover includes a fixed magnetic half-ring fixedly connected to the vertical support rod and a liquid-gathering half-ring fixedly connected to the lower end of the fixed magnetic half-ring. A liquid discharge hole is drilled at the outer end of the liquid-gathering half-ring, and the lower edge of the liquid discharge hole is flush with the bottom edge of the outer ring cover.

[0014] As a supplement to the further improvement of the present application, the inner magnetic ring and the outer ring cover are arranged non-coaxially. Magnetic strips are fixedly inlaid on the left and right inner walls at the top of the fixed magnetic half-ring, and the left and right outer ends of the inner magnetic ring are respectively adsorbed to the two magnetic strips.

[0015] As a supplement to the further improvement of the present application, the thickness of the outer ring of the liquid-gathering half-ring is greater than the thickness of the fixed magnetic half-ring. The inner edge of the outer ring of the liquid-gathering half-ring is an outward-expanded U-shaped structure, and the middle part of the U-shaped is straight. When the inner magnetic ring is adsorbed to the magnetic strip, the lower end of the inner magnetic ring is located inside the liquid-gathering half-ring, and a receiving groove is formed between the upper surface of the inner magnetic ring and the left and right inner walls of the liquid-gathering half-ring.

[0016] As another improvement of the present application, the liquid absorption layer includes a transparent protective cover and a water-sensitive interlayer fixedly inlaid in the transparent protective cover. A double U-shaped hole is drilled at the upper end of the transparent protective cover. Absorbent cotton is filled inside the positive U-shaped part of the double U-shaped hole. The upper port of the double U-shaped hole is coaxial with the liquid guide pipe. The lower port edge of the double U-shaped hole is in contact with the water-sensitive interlayer. The water-sensitive interlayer is water-absorbing and color-changing ink, and the laser beam of the laser emitter intersects with the water-sensitive interlayer.

[0017] In summary, through the setting of the joint protection unit, on the one hand, it can protect the joint of the heat exchange coil, so that it does not directly contact the soil, reducing the possibility of leakage at the interface. On the other hand, in cooperation with the water seepage monitoring unit and the fixed-point monitoring unit arranged in the joint protection unit, it can clearly distinguish whether the water seepage is from above or below the heat exchange coil. And for the case of water seepage at the lower pipe connection, the seepage water will be concentrated and first fall on the monitoring ring, triggering the pressure sensor inside it, thereby realizing the positioning of the leakage point, so that targeted excavation and repair can be carried out. Compared with the large-area excavation and repair of the prior art, the repair difficulty is greatly reduced, the repair efficiency is improved at the same time, and the investment in maintenance costs is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a distribution schematic diagram of the heat pump unit according to the first embodiment of the present application;

[0019] Figure 2 It is a principle schematic diagram of the first embodiment of the present application;

[0020] Figure 3 It is a front view of the heat exchange coil with a joint protection unit according to the first embodiment of the present application;

[0021] Figure 4 Front schematic view of the joint protection unit according to the first embodiment of the present application;

[0022] Figure 5 Stereo schematic view of the fixed-point monitoring unit according to the first embodiment of the present application;

[0023] Figure 6 Stereo view of the monitoring ring according to the first embodiment of the present application;

[0024] Figure 7 Front view of the monitoring ring when there is no leakage in the heat exchange coil according to the first embodiment of the present application;

[0025] Figure 8 Front view of the monitoring ring after leakage occurs in the heat exchange coil according to the first embodiment of the present application;

[0026] Figure 9 Side view cross-section of the monitoring ring according to the first embodiment of the present application;

[0027] Figure 10 Side view cross-section of the monitoring ring after leakage occurs in the heat exchange coil according to the first embodiment of the present application;

[0028] Figure 11 Cross-section view of the sensing block according to the second embodiment of the present application.

[0029] Description of the reference numerals in the figure:

[0030] 1 Heat exchange coil, 101 Lower bent section, 102 Upper bent section, 2 Heat pump unit, 21 Evaporator, 22 Compressor, 23 Condenser, 24 Four-way valve, 31 Upper liquid guide cover, 32 Liquid guide pipe, 33 Lower liquid receiving cover, 301 Outer protective layer, 41 Horizontal support rod, 42 Vertical support rod, 5 Monitoring ring, 51 Outer ring cover, 52 Inner magnetic ring, 53 Pressure sensor, 511 Liquid collecting semi-ring, 512 Fixed magnetic semi-ring, 501 Drain hole, 502 Magnetic strip, 601 Laser emitter, 602 Laser receiver, 71 Liner plate, 72 Liquid absorbing layer, 721 Transparent protective cover, 722 Water sensing interlayer, 701 Double U-shaped hole, 702 Liquid absorbing cotton. Specific embodiments

[0031] The following describes the two embodiments of the present application in detail with reference to the accompanying drawings.

[0032] The first embodiment:

[0033] Figure 1-2Disclosed is a ground source heat pump unit utilizing geothermal energy, including a heat pump 2 with a monitoring center and heat exchange coils 1 buried underground. The heat pump 2 is connected to terminal equipment. The heat pump 2 includes an evaporator 21, a compressor 22 connected to the evaporator 21, a condenser 23, and a four-way valve 24. The inlets of the evaporator 21 and the compressor 22 are both connected to the four-way valve 24 through main pipes. The four-way valve 24 and the heat exchange coils 1, the drain port of the evaporator 21 and the heat exchange coils 1, and the drain port of the condenser 23 and the heat exchange coils 1 are all connected through auxiliary pipes, and solenoid valves are installed on the auxiliary pipes connected to the drain ports of the evaporator 21 and the condenser 23. The exhaust port of the evaporator 21 is connected to the compressor 22 through a branch pipe;

[0034] In this embodiment, taking this heat pump unit as an example when used as an air conditioner, at this time, the terminal equipment is an air pump that can exchange air with the indoor according to actual needs. It can suck indoor air into the heat pump 2 and exchange heat with the water in the heat exchange coils 1, and then discharge cold air or hot air to achieve refrigeration or heating.

[0035] This heat pump unit can also be used as a water heater. At this time, the terminal equipment can be a water pump and a water tank for storing water. The water pump sucks water into the heat pump 2 and exchanges heat with the water in the heat exchange coils 1, and then discharges cold water or hot water to achieve refrigeration or heating.

[0036] It should be noted that in specific implementation, for the specific selection of the terminal equipment, those skilled in the art can set it according to actual needs.

[0037] Such as Figure 2 , in the refrigeration mode of this embodiment: the heat exchange coils 1 are made to communicate with the condenser 23 through the four-way valve 24. At this time, the water in the pipes of the heat exchange coils 1 absorbs the cold energy underground to form geothermal cold water, and then enters the condenser 23 along the four-way valve 24. At this time, the condenser 23 can absorb the hot air in the room through the air pump, and the hot air exchanges heat with the geothermal cold water, so that the temperature of the hot air decreases and becomes cold air and is discharged into the room, realizing refrigeration using geothermal resources;

[0038] In the heating mode of this embodiment: the heat exchange coils 1 are made to communicate with the evaporator 21 through the four-way valve 24. At this time, the water in the pipes of the heat exchange coils 1 absorbs the heat underground to form geothermal hot water, and then flows into the evaporator 21. At this time, the evaporator 21 can absorb the cold air in the room through the air pump, and exchange heat with the geothermal hot water to increase the air temperature, and then continue to discharge it into the compressor 22, where it is compressed into high-temperature gas and discharged into the room to achieve heating.

[0039] It should be noted that the compressor 22 in the heating mode is used as an auxiliary, which can further increase the temperature of the air that has absorbed the heat in the geothermal hot water, thereby making the heating speed faster and the effect better. Specifically, in implementation, the compressor 22 can be selectively set according to actual needs.

[0040] For example Figure 3 , the heat exchange coil 1 includes a plurality of vertical pipes, a plurality of upper bent sections 102 respectively fixedly connected between the upper ends of adjacent two vertical pipes, and a plurality of lower bent sections 101 respectively fixedly connected between the lower ends of adjacent two vertical pipes. The plurality of lower bent sections 101 and the upper bent sections 102 are mutually offset. A joint protection unit is provided outside the heat exchange coil 1. The joint protection unit includes an upper liquid guide cover 31 fixedly sleeved outside the plurality of upper bent sections 102, a lower liquid receiving cover 33 fixedly sleeved outside the plurality of lower bent sections 101, and a liquid guide pipe 32 fixedly connected between the upper liquid guide cover 31 and the lower liquid receiving cover 33. A water seepage monitoring unit is installed inside the lower liquid receiving cover 33, and a fixed-point monitoring unit is also provided at the lower bent section 101. Both the fixed-point monitoring unit and the water seepage monitoring unit are signal-connected to the monitoring center.

[0041] For example Figure 4 , the lower end of the upper liquid guide cover 31 is a conical structure, and the lowest point of the upper liquid guide cover 31 is offset from the lower bent section 101. The outer layer 301 is wrapped outside the liquid guide pipe 32, and the upper and lower ends of the outer layer 301 are respectively fixedly connected to the upper liquid guide cover 31 and the lower liquid receiving cover 33. The water seepage monitoring unit includes a laser emitter 601 and a laser receiver 602 respectively installed on the left and right inner walls of the lower liquid receiving cover 33, and a sensing block installed at the bottom of the lower liquid receiving cover 33. The sensing block is located directly below the liquid guide pipe 32. The sensing block includes a lining plate 71 fixedly connected to the bottom of the lower liquid receiving cover 33 and a liquid absorption layer 72 fixedly connected to the upper end of the lining plate 71. The surface of the liquid absorption layer 72 is coated with water-discoloring ink, and the laser beam emitted by the laser emitter 601 intersects with the liquid absorption layer 72.

[0042] When water seeps from above, along the conical surface and the liquid guide pipe 32, the water will fall concentratedly and directly onto the liquid absorption layer 72, thereby gradually making it transparent. At this time, the laser beam emitted by the laser emitter 601 can pass through the liquid absorption layer 72, and then the laser receiver 602 receives the laser signal.

[0043] In addition, the outer surface of the end of the vertical pipe connected to the upper bent section 102 is coated with water-sensitive color-changing ink, so that after water seeps from above, the corresponding position can change color, which is convenient for reminding the staff. A plurality of sealing doors corresponding to the bent parts of the heat exchange coil 1 are arranged on the sides of the upper liquid guide cover 31 and the lower liquid receiving cover 33 respectively. Both the upper liquid guide cover 31 and the lower liquid receiving cover 33 are made of hard transparent structures. When it is determined that there is a leakage above, excavation can be carried out at the corresponding position of the sealing door in the middle of the upper liquid guide cover 31, then the sealing door is opened, and a micro camera is sent into the upper liquid guide cover 31 through the sealing door to obtain internal image information. According to the pipe color-changing position in the obtained image information, the leakage position is determined, and then excavation continues towards the leakage position, and then the corresponding sealing door is opened for maintenance.

[0044] As Figure 5-6 , the fixed-point monitoring unit includes a flat support rod 41 fixedly connected to two adjacent vertical pipes, a vertical support rod 42 fixedly connected to the lower end of the flat support rod 41, and a monitoring ring 5 sleeved on the middle part of the lower bent section 101. The monitoring ring 5 is fixedly connected to the vertical support rod 42. The monitoring ring 5 includes an outer ring cover 51, an inner magnetic ring 52 located inside the outer ring cover 51, and a pressure sensor 53 installed at the inner bottom end of the outer ring cover 51. The left and right outer edges of the inner magnetic ring 52 are in contact with the inner wall of the outer ring cover 51. The pressure sensor 53 is signal-connected to the monitoring center. The outer ring cover 51 includes a fixed magnetic semi-ring 512 fixedly connected to the vertical support rod 42 and a liquid-gathering semi-ring 511 fixedly connected to the lower end of the fixed magnetic semi-ring 512. A liquid discharge hole 501 is drilled at the outer end of the liquid-gathering semi-ring 511. The lower edge of the opening of the liquid discharge hole 501 is flush with the bottom edge of the outer ring cover 51. As Figure 7 and Figure 9 , the inner magnetic ring 52 and the outer ring cover 51 are not coaxially arranged. Magnetic strips 502 are fixedly inlaid on the left and right inner walls of the top of the fixed magnetic semi-ring 512. The left and right outer ends of the inner magnetic ring 52 are respectively adsorbed to the two magnetic strips 502.

[0045] As Figure 8 , when there is a leakage phenomenon at the lower pipe interface, the seeping water moves along the lower bent section 101 to the middle of its lower end and then drips down and falls into the receiving groove. As the amount of seepage increases, the downward force on the inner magnetic ring 52 increases. When it is greater than the adsorption force between the magnetic strips 502, it will fall, and then squeeze the pressure sensor 53, causing the pressure sensor 53 to generate force data first. As Figure 10, and then, part of the seeping water can overflow outward along the edge of the receiving groove opening, and part of it overflows along the liquid discharge hole 501 and falls on the lower liquid receiving cover 33. As the seeping water increases, the liquid level will gradually rise to the liquid absorption layer 72, thereby causing a change in transparency at this point, so that the optical signal data can be received at the laser receiver 602. Based on the sequential data changes of the above-mentioned pressure sensor 53 and the laser receiver 602, the monitoring center can determine that there is a leakage at the pipe interface below, and can locate the leakage point according to the data change of the pressure sensor 53, and directly excavate, thereby effectively reducing the excavation area and range, reducing the maintenance difficulty and cost, and improving the maintenance efficiency.

[0046] The thickness of the outer ring of the liquid collecting semi-ring 511 is greater than that of the fixed magnetic semi-ring 512. The inner ring edge of the liquid collecting semi-ring 511 is an outward-expanded U-shaped structure, and the middle part of the U-shaped is straight, so that the volume of the subsequent receiving groove is relatively large and can hold more water, and then the inner magnetic ring 52 can be sufficiently separated from the magnetic strip 502. When the inner magnetic ring 52 adsorbs to the magnetic strip 502, the lower end of the inner magnetic ring 52 is located inside the liquid collecting semi-ring 511, and the upper surface of the inner magnetic ring 52 and the left and right inner walls of the liquid collecting semi-ring 511 enclose a receiving groove for receiving the water seeping out from the connection between the corresponding downward-bending section 101 and the vertical pipe, thereby increasing the force on the inner magnetic ring 52 and enabling it to break away from the adsorption of the magnetic strip 502 and trigger the pressure sensor 53.

[0047] In summary, through the setting of the joint protection unit, on the one hand, it can protect the joint of the heat exchange coil 1 so that it does not directly contact the soil, reducing the possibility of leakage at the interface. On the other hand, in cooperation with the water seepage monitoring unit and the fixed-point monitoring unit arranged in the joint protection unit, it can clearly distinguish whether the water seepage of the heat exchange coil 1 is from above or below. And for the case of water seepage at the lower pipe connection, the seeping water will be concentrated and first fall on the monitoring ring 5, triggering the pressure sensor 53 inside it, and then realizing the positioning of the leakage point, so that fixed-point excavation and maintenance can be carried out. Compared with the large-area excavation and maintenance of the prior art, the maintenance difficulty is greatly reduced, the maintenance efficiency is improved at the same time, and the investment in maintenance costs is reduced.

[0048] The second implementation manner:

[0049] In this implementation manner, on the basis of the first implementation manner, the liquid absorption layer 72 is further improved, and the rest is the same as the first implementation manner.

[0050] Figure 11It is shown that the liquid absorption layer 72 includes a transparent shield 721 and a water-sensitive interlayer 722 fixedly embedded in the transparent shield 721. A double U-shaped hole 701 is drilled at the upper end of the transparent shield 721. Absorbent cotton 702 is filled inside the positive U-shaped part of the double U-shaped hole 701. The upper port of the double U-shaped hole 701 is coaxial with the liquid guide pipe 32, and the edge of the lower port of the double U-shaped hole 701 is in contact with the water-sensitive interlayer 722. The water-sensitive interlayer 722 is water-absorbent color-changing ink, and the laser beam of the laser emitter 601 intersects with the water-sensitive interlayer 722. Through the cooperative setting of the double U-shaped hole 701 and the absorbent cotton 702, the water-sensitive interlayer 722 can be prevented from directly contacting the air inside the lower liquid receiving cover 33, so that its color is not easily changed due to air humidity. Furthermore, without affecting the passage of water through the double U-shaped hole 701, the protection of the water-sensitive interlayer 722 is achieved, and the result of water seepage monitoring in this embodiment is more accurate.

[0051] Combined with the current actual requirements, the above-mentioned implementation manner adopted in this application, the scope of protection is not limited to this. Within the knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A ground source heat pump unit utilizing geothermal energy, characterized in that: It includes a heat pump unit (2) with a monitoring center and heat exchange coils (1) buried underground. The heat pump unit (2) includes an evaporator (21), a compressor (22) connected to the evaporator (21), a condenser (23), and a four-way valve (24). The inlets of the evaporator (21) and the compressor (22) are both connected to the four-way valve (24) through main pipelines. The four-way valve (24) is connected to the heat exchange coils (1) through a secondary pipeline, the drain outlet of the evaporator (21) is connected to the heat exchange coils (1) through a secondary pipeline, and the drain outlet of the condenser (23) is connected to the heat exchange coils (1) through a secondary pipeline. Solenoid valves are installed on the secondary pipelines connected to the drain outlets of the evaporator (21) and the condenser (23). The exhaust port of the evaporator (21) is connected to the compressor (22) through a branch pipeline; The heat exchange coils (1) include a plurality of vertical pipelines, a plurality of upper bending sections (102) respectively fixedly connected between the upper ends of adjacent two vertical pipelines, and a plurality of lower bending sections (101) respectively fixedly connected between the lower ends of adjacent two vertical pipelines. The plurality of lower bending sections (101) and upper bending sections (102) are mutually offset. A joint protection unit is provided outside the heat exchange coils (1). The joint protection unit includes an upper liquid guide cover (31) fixedly covering outside the plurality of upper bending sections (102), a lower liquid receiving cover (33) fixedly covering outside the plurality of lower bending sections (101), and a liquid guide pipe (32) fixedly connected between the upper liquid guide cover (31) and the lower liquid receiving cover (33). A water seepage monitoring unit is installed inside the lower liquid receiving cover (33). A fixed-point monitoring unit is also provided at the lower bending section (101). The fixed-point monitoring unit and the water seepage monitoring unit are both in signal connection with the monitoring center; The fixed-point monitoring unit includes a horizontal support rod (41) fixedly connected to adjacent two vertical pipelines, a vertical support rod (42) fixedly connected to the lower end of the horizontal support rod (41), and a monitoring ring (5) sleeved on the middle part of the lower bending section (101). The monitoring ring (5) is fixedly connected to the vertical support rod (42). The monitoring ring (5) includes an outer ring cover (51), an inner magnetic ring (52) located inside the outer ring cover (51), and a pressure sensor (53) installed at the inner bottom end of the outer ring cover (51). The left and right outer edges of the inner magnetic ring (52) are in contact with the inner wall of the outer ring cover (51). The pressure sensor (53) is in signal connection with the monitoring center. The outer ring cover (51) includes a fixed magnetic semi-ring (512) fixedly connected to the vertical support rod (42) and a liquid collecting semi-ring (511) fixedly connected to the lower end of the fixed magnetic semi-ring (512). A drain hole (501) is drilled at the outer end of the liquid collecting semi-ring (511). The lower edge of the drain hole (501) mouth is flush with the bottom edge of the outer ring cover (51). The inner magnetic ring (52) and the outer ring cover (51) are not coaxially arranged. Magnetic strips (502) are fixedly inlaid on the left and right inner walls of the top of the fixed magnetic semi-ring (512). The left and right outer ends of the inner magnetic ring (52) are respectively adsorbed to the two magnetic strips (502).

2. The ground source heat pump unit using geothermal energy according to claim 1, characterized in that: The lower end of the upper liquid guide cover (31) is a conical structure, and the lowest point of the upper liquid guide cover (31) is offset from the lower bending section (101). An outer protective layer (301) is wrapped around the liquid guide pipe (32), and the upper and lower ends of the outer protective layer (301) are fixedly connected to the upper liquid guide cover (31) and the lower liquid receiving cover (33) respectively.

3. A ground source heat pump unit utilizing geothermal energy according to claim 1, characterized in that: The water seepage monitoring unit includes a laser emitter (601) and a laser receiver (602) respectively installed on the left and right inner walls of the lower liquid receiving cover (33) and a sensing block installed at the bottom of the lower liquid receiving cover (33). The sensing block is located directly below the liquid guide pipe (32).

4. The ground source heat pump unit using geothermal energy according to claim 3, characterized in that: The sensing block includes a lining plate (71) fixedly connected to the bottom of the lower liquid receiving cover (33) and a liquid absorption layer (72) fixedly connected to the upper end of the lining plate (71). The laser beam emitted by the laser emitter (601) intersects the liquid absorption layer (72).

5. A ground source heat pump unit utilizing geothermal energy according to claim 1, characterized in that: A plurality of sealing doors corresponding to the bending parts of the heat exchange coil (1) are arranged on the sides of the upper liquid guide cover (31) and the lower liquid receiving cover (33). The upper liquid guide cover (31) and the lower liquid receiving cover (33) are both made of hard transparent structures.

6. The ground source heat pump unit using geothermal energy according to claim 1, characterized in that: The thickness of the outer ring of the liquid collecting semi-ring (511) is greater than the thickness of the fixed magnetic semi-ring (512). The inner ring edge of the liquid collecting semi-ring (511) is an outward-expanded U-shaped structure, and the middle part of the U-shape is straight. When the inner magnetic ring (52) is adsorbed to the magnetic strip (502), the lower end of the inner magnetic ring (52) is located inside the liquid collecting semi-ring (511), and a receiving groove is formed by the upper surface of the inner magnetic ring (52) and the left and right inner walls of the liquid collecting semi-ring (511).

7. A ground source heat pump unit utilizing geothermal energy according to claim 4, characterized in that: The liquid absorption layer (72) includes a transparent protective cover (721) and a water-sensing interlayer (722) fixedly embedded in the transparent protective cover (721). A double U-shaped hole (701) is drilled at the upper end of the transparent protective cover (721). Absorbent cotton (702) is filled in the positive U-shaped part of the double U-shaped hole (701). The upper port part of the double U-shaped hole (701) is coaxial with the liquid guide pipe (32), and the edge of the lower port part of the double U-shaped hole (701) contacts the water-sensing interlayer (722). The water-sensing interlayer (722) is water-absorbing color-changing ink, and the laser beam of the laser emitter (601) intersects the water-sensing interlayer (722).

Images