Underground pipe structure for shallow geothermal heating

Abstract

The utility model discloses a buried pipe structure for shallow geothermal heating, which relates to the technical field of heat exchange, and comprises an outer pipe body, an inner pipe body is arranged in the outer pipe body in a penetrating manner, a lower water flow channel is formed between the outer pipe body and the inner pipe body, and the lower water flow channel is communicated with the inner part of the inner pipe body through a liquid guide opening formed in the pipe wall of the inner pipe body; the heat collection anti-impact assembly is arranged on the periphery of the outer pipe body, the heat collection anti-impact assembly comprises a spiral piece, the spiral piece is spirally arranged on the periphery of the outer pipe body, and a spiral pressure-resistant plate is arranged on the periphery of the spiral piece; the structure can be implanted into the shallow layer of the earth surface, the outer pipe body and the shallow layer of the earth surface can be firmly fixed through the heat collection anti-impact assembly, the heat collection anti-impact assembly can further transfer geothermal energy of the shallow layer into the lower water flow channel, and when a heat exchange medium flows in the lower water flow channel, heat can be transferred out from the inner pipe body; therefore, the utilization efficiency and the heat exchange efficiency of terrestrial heat can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange technology, and more specifically, relates to a buried pipe structure for shallow geothermal heating. Background Technology

[0002] Shallow geothermal energy refers to the Earth's internal thermal energy resources stored in rocks, soil, groundwater, and surface water at a certain depth below the surface (generally within 200 meters), possessing development and utilization value. This resource is clean, environmentally friendly, and rapidly regenerating, offering significant energy-saving and emission-reduction effects. Shallow geothermal heating utilizes the thermal energy stored in the shallow underground geothermal layer, using a ground source heat pump system to raise the low-temperature underground heat energy to the temperature required by the building, and then supplying heat to the building's interior through heating equipment. The ground source heat pump system is the core component of shallow geothermal heating, consisting of a ground source heat pump, a water circulation system, and heat exchangers, among other components. Ground source heat pumps utilize the working principles of compressors and heat exchangers to extract low-temperature heat energy from underground into buildings. The compressor compresses and heats the heat energy, and then the heat energy is transferred to heating equipment through a heat exchanger to achieve heating. However, the contact time between the heat exchange fluid and the geothermal energy in the buried pipes used for shallow geothermal heating is short, resulting in reduced heat exchange efficiency and affecting the utilization of geothermal energy. Furthermore, vertical buried pipes are prone to displacement when subjected to geological vibrations, which not only affects the connection strength of the pipes but also has certain drawbacks on the heat exchange of the buried pipes.

[0003] Therefore, it is necessary to provide a new buried pipe structure for shallow geothermal heating to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a buried pipe structure for shallow geothermal heating. This structure can be implanted into the shallow ground surface. The outer pipe can be firmly fixed to the shallow ground surface through the heat collection and impact-resistant components. The heat collection and impact-resistant components can also transfer shallow geothermal heat to the water channel. When there is heat exchange medium flowing in the water channel, heat can be transferred out from the inner pipe, thus improving the utilization efficiency and heat exchange efficiency of geothermal energy.

[0005] To achieve the above objectives, this utility model provides a buried pipe structure for shallow geothermal heating, comprising:

[0006] An outer pipe body has an inner pipe body that runs through it. A drainage channel is formed between the outer pipe body and the inner pipe body. The drainage channel is connected to the interior of the inner pipe body through a liquid guide port opened in the pipe wall of the inner pipe body.

[0007] A heat collection and impact-resistant assembly is disposed on the outer periphery of the outer tube body. The heat collection and impact-resistant assembly includes a spiral blade, which is spirally disposed on the outer periphery of the outer tube body. A spiral pressure-resistant plate is disposed on the outer periphery of the spiral blade.

[0008] Optionally, the outer tube and the inner tube are coaxially arranged, the bottom of the inner tube is connected to the bottom of the outer tube, and the tops of both the inner tube and the outer tube are open.

[0009] Optionally, a spiral plate is provided between the outer pipe and the inner pipe, and the sewer channel is spiral-shaped.

[0010] Optionally, multiple liquid guide ports are provided at the bottom of the inner tube.

[0011] Optionally, a spiral rib is provided between the spiral blade and the outer wall of the outer tube, and the spiral rib is fitted into both the outer tube and the spiral blade.

[0012] Optionally, the spiral blades are in a pleated shape.

[0013] Optionally, the spiral pressure-resistant plate is V-shaped, and the corner of the spiral pressure-resistant plate is welded to the outer ring of the spiral blade.

[0014] Optionally, the included angle of the spiral anti-compression plate is 120° to 130°.

[0015] Optionally, the top of the inner tube extends to the outside of the outer tube.

[0016] Optionally, the inner wall of the inner tube is fitted with a polyurethane foam insulation sleeve.

[0017] This utility model provides a buried pipe structure for shallow geothermal heating, the advantages of which are as follows: In this buried pipe structure, since the heat collection and impact-resistant components are installed on the outer pipe body, when the heat exchange pipe perpendicular to the shallow ground is vibrated by the ground surface, the transverse impact force of the V-shaped spiral pressure plate can be transmitted to the spiral pleated plate. Since the spiral pleated plate itself is an elastic structure, the pleated section in the spiral plate can expand and contract after being impacted, thereby effectively reducing the vibration of the outer pipe body. In addition, the pleated part of the spiral plate also greatly increases the contact area with the geothermal heat, making the heat exchange efficiency of the outer pipe body higher.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1A schematic diagram of a buried pipe structure for shallow geothermal heating according to an embodiment of the present invention is shown.

[0021] Figure 2 It shows Figure 1 A sectional view.

[0022] Figure 3 It shows Figure 2 Enlarged view of point A.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Outer tube; 2. Inner tube; 3. Spiral plate; 4. Heat collection and impact-resistant assembly; 41. Spiral rib; 42. Spiral blade; 43. V-shaped spiral pressure-resistant plate; 5. Polyurethane foam insulation sleeve; 6. Liquid guide port. Detailed Implementation

[0025] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0026] This utility model provides a buried pipe structure for shallow geothermal heating, including:

[0027] An outer pipe body with an inner pipe body running through it. A drainage channel is formed between the outer and inner pipe bodies. The drainage channel is connected to the interior of the inner pipe body through a liquid guide port opened in the pipe wall of the inner pipe body.

[0028] A heat collection and impact-resistant component is disposed on the outer periphery of the outer tube body. The heat collection and impact-resistant component includes a spiral blade, which is spirally arranged on the outer periphery of the outer tube body. A spiral pressure-resistant plate is disposed on the outer periphery of the spiral blade.

[0029] Specifically, the buried pipe structure features an interlocking outer and inner pipe body. A liquid guide port is installed on the inner pipe body, which connects the drainage channel between the outer and inner pipe bodies with the internal space of the inner pipe body. When the hot water circulates between the drainage channel and the inner pipe body, it transfers shallow heat from the outside of the outer pipe body to the hot water. In addition, the outer pipe body is equipped with a heat collection and impact-resistant component, which includes spiral blades and spiral pressure-resistant plates. These two structures work together to resist lateral impact forces, thereby effectively reducing the vibration of the outer pipe body.

[0030] Optionally, the outer tube and the inner tube are coaxially arranged, the bottom of the inner tube is connected to the bottom of the outer tube, and the tops of both the inner tube and the outer tube are open.

[0031] Optionally, a spiral plate is provided between the outer pipe and the inner pipe, and the sewer channel is spiral-shaped.

[0032] Specifically, the outer and inner tubes are coaxially arranged, forming a drainage channel of equal width along the circumference between them. A spiral plate is placed between the two tubes, making the drainage channel spiral. The heat exchange medium flows in the spiral channel, which greatly increases the heat exchange time between the heat exchange medium and the geothermal energy, thereby improving heat exchange efficiency and thermal stability. The tops of the outer and inner tubes are designed as open structures, allowing the heat exchange medium to be sent into the drainage channel. After making full contact with the geothermal energy, it enters the inner tube through the liquid guide port and finally flows out from the top of the inner tube, making reasonable use of the heat-carrying heat exchange medium.

[0033] Optionally, multiple liquid inlets are provided at the bottom of the inner tube.

[0034] Specifically, the liquid inlet is located at the bottom of the inner tube, which allows the heat exchange medium to flow through the drainage channel to cover the entire length of the outer tube, maximizing the heat exchange time and improving heat exchange efficiency. The liquid then flows quickly into the inner tube through multiple inlets and is finally discharged from the bottom of the inner tube for geothermal utilization. This ensures thermal stability and prevents the heat exchange medium from being stored and transferred for a long time after acquiring heat, thus avoiding the slow loss of heat in the heat exchange medium.

[0035] Optionally, a spiral rib is provided between the spiral blade and the outer wall of the outer tube, and the spiral rib is fitted into both the outer tube and the spiral blade.

[0036] Specifically, in the heat collection and impact-resistant assembly, a spiral rib is fixedly embedded in the outer wall of the outer pipe body, and a spiral blade is fixedly embedded in the spiral rib. A spiral pressure-resistant plate is fixedly welded to the outer ring wall of the spiral blade. In this way, the overall structure of the heat collection and impact-resistant assembly is stable, which greatly enhances the strength of the pipe body. When the buried pipe structure is inserted into the shallow ground, it can effectively prevent the outer pipe body from being compressed, which could lead to deformation and blockage of the sewer channel.

[0037] Alternatively, the spiral blades may be corrugated.

[0038] Optionally, the spiral compression plate is V-shaped, and the corners of the spiral compression plate are welded to the outer ring of the spiral blade.

[0039] Specifically, the spiral blades are designed in a pleated shape. Since the spiral blades themselves are elastic structures, when the spiral blades are impacted, the pleated spiral blades can expand and contract, thereby effectively reducing the vibration of the outer tube. In addition, setting the spiral blades in a pleated shape can increase the contact area between the spiral blades and the geothermal energy, allowing the heat exchange medium to receive more heat.

[0040] Optionally, the included angle of the spiral compression plate is 120° to 130°.

[0041] Optionally, the top of the inner tube extends to the outside of the outer tube.

[0042] Specifically, by setting the height of the inner tube to be higher than that of the outer tube, the heat exchange medium after heat exchange can enter the inner tube from the liquid guide port and finally be discharged from the top port of the inner tube.

[0043] Optionally, the inner wall of the inner tube is fitted with a polyurethane foam insulation sleeve.

[0044] Specifically, a polyurethane foam insulation sleeve is fixedly embedded in the inner wall of the inner tube, which is used to reduce heat loss during the liquid reflux process inside the inner tube.

[0045] Example

[0046] like Figures 1 to 3 As shown, this utility model provides a buried pipe structure for shallow geothermal heating, comprising:

[0047] An outer pipe 1 has an inner pipe 2 running through it. A drainage channel is formed between the outer pipe 1 and the inner pipe 2. The drainage channel is connected to the interior of the inner pipe 2 through a liquid guide port 6 opened in the pipe wall of the inner pipe 2.

[0048] The heat collection and impact resistance component 4 is disposed on the outer periphery of the outer tube body 1. The heat collection and impact resistance component 4 includes a spiral blade 42, which is spirally disposed on the outer periphery of the outer tube body 1. A spiral pressure-resistant plate 43 is disposed on the outer periphery of the spiral blade 42.

[0049] In this embodiment, the outer tube 1 and the inner tube 2 are coaxially arranged, the bottom of the inner tube 2 is connected to the bottom of the outer tube 1, and the tops of both the inner tube 2 and the outer tube 1 are open.

[0050] In this embodiment, a spiral plate 3 is provided between the outer pipe 1 and the inner pipe 2, and the sewer channel is spiral in shape.

[0051] In this embodiment, multiple liquid guide ports 6 are provided at the bottom of the inner tube 2.

[0052] In this embodiment, a spiral rib 41 is provided between the spiral blade 42 and the outer wall of the outer tube 1, and the spiral rib 41 is fitted into both the outer tube 1 and the spiral blade 42.

[0053] In this embodiment, the spiral blade 42 is in a pleated shape.

[0054] In this embodiment, the spiral pressure-resistant plate 43 is V-shaped, and the corner of the spiral pressure-resistant plate 43 is welded to the outer ring of the spiral blade 42.

[0055] In this embodiment, the included angle of the spiral anti-compression plate 43 is 120° to 130°.

[0056] In this embodiment, the top of the inner tube 2 extends to the outside of the outer tube 1.

[0057] In this embodiment, the inner wall of the inner tube 2 is fitted with a polyurethane foam insulation sleeve 5.

[0058] In summary, the working principle of this buried pipe structure is as follows: the heat exchange fluid is injected through the cavity between the top opening of the outer pipe 1 and the inner pipe 2. The heat exchange fluid is then introduced through a spiral drainage channel structure composed of the outer pipe 1, the inner pipe 2, and the spiral plate 3. This spiral drainage channel structure significantly increases the heat exchange time between the heat exchange fluid and the geothermal energy, thus improving heat exchange efficiency and thermal stability. After heat exchange, the fluid enters the inner pipe 2 through the liquid guide port 6 and is discharged from the top opening of the inner pipe 2. Because the outer pipe 1 is equipped with a heat collection and impact-resistant component 4, when the heat exchange pipe perpendicular to the shallow ground vibrates due to ground vibration, the lateral impact force on the V-shaped spiral pressure plate 43 can be transmitted to the spiral blades 42. Since the pleated spiral blades 42 are elastic, the pleated sections can expand and contract after impact, effectively reducing the vibration of the outer pipe 1. Furthermore, the spiral blades 42 greatly increase the contact area with the geothermal energy, resulting in higher heat exchange efficiency for the outer pipe 1.

[0059] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A buried pipe structure for shallow geothermal heating, characterized in that, include: An outer pipe body has an inner pipe body that runs through it. A drainage channel is formed between the outer pipe body and the inner pipe body. The drainage channel is connected to the interior of the inner pipe body through a liquid guide port opened in the pipe wall of the inner pipe body. A heat collection and impact-resistant assembly is disposed on the outer periphery of the outer tube body. The heat collection and impact-resistant assembly includes a spiral blade, which is spirally disposed on the outer periphery of the outer tube body. A spiral pressure-resistant plate is disposed on the outer periphery of the spiral blade.

2. The buried pipe structure for shallow geothermal heating according to claim 1, characterized in that, The outer tube and the inner tube are coaxially arranged, the bottom of the inner tube is connected to the bottom of the outer tube, and the tops of both the inner tube and the outer tube are open.

3. The buried pipe structure for shallow geothermal heating according to claim 2, characterized in that, A spiral plate is provided between the outer pipe and the inner pipe, and the sewer channel is spiral in shape.

4. The buried pipe structure for shallow geothermal heating according to claim 2, characterized in that, Multiple liquid guide ports are provided at the bottom of the inner tube.

5. The buried pipe structure for shallow geothermal heating according to claim 1, characterized in that, A spiral rib is provided between the spiral blade and the outer wall of the outer tube, and the spiral rib is fitted into both the outer tube and the spiral blade.

6. The buried pipe structure for shallow geothermal heating according to claim 1, characterized in that, The spiral blades are pleated.

7. The buried pipe structure for shallow geothermal heating according to claim 6, characterized in that, The spiral pressure-resistant plate is V-shaped, and the corner of the spiral pressure-resistant plate is welded to the outer ring of the spiral blade.

8. The buried pipe structure for shallow geothermal heating according to claim 7, characterized in that, The included angle of the spiral anti-compression plate is 120° to 130°.

9. The buried pipe structure for shallow geothermal heating according to claim 1, characterized in that, The top of the inner tube extends to the outside of the outer tube.

10. The buried pipe structure for shallow geothermal heating according to claim 1, characterized in that, The inner wall of the inner tube is fitted with a polyurethane foam insulation sleeve.

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