Heat pipe sealing assembly, connecting method and superconducting hollow rod reinforced heat exchange system

Abstract

This invention discloses a heat pipe sealing assembly and connection method, as well as a superconducting hollow rod enhanced heat exchange system. The sealing assembly includes an inner core ring, with a heat transfer sealing unit disposed on the inner wall of the inner core ring. The heat transfer sealing unit includes a heat transfer element and an expansion sealing element. A heat transfer channel is disposed within the inner core ring, connecting the heat transfer element and the expansion sealing element. A pressure-transferring mechanism is disposed inside the heat transfer channel. The invention also includes a connector, with a heat-conducting element penetrating through the connector's wall. After the inner core ring is connected to the outer wall of the connector, the heat transfer element and the heat-conducting element come into contact. This invention uses the heat-conducting element to ensure that the heat transfer element receives more heat than the expansion sealing element, and by setting up the pressure-transferring mechanism, reduces the heat dissipation area of ​​the thermally expanding medium, thereby improving the stability of the seal.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, specifically to a heat pipe sealing assembly and connection method, and a superconducting hollow rod enhanced heat exchange system. Background Technology

[0002] The superconducting hollow rod consists of an outer metal layer and an inner hollow space. The outer metal layer has good mechanical properties and can withstand certain pressure and tension. The inner hollow space is filled with superconducting fluid, which can exhibit superconducting properties under specific conditions, thereby achieving efficient heat transfer.

[0003] During the flow of produced fluid from heavy oil wells or high-wax oil wells to the surface wellhead, the viscosity and upflow resistance increase sharply due to heat dissipation and cooling. This leads to wax precipitation, stagnation, and even blockage of the produced fluid near the wellhead. Current solutions to wax deposition involve heating the fluid in the well, commonly using electric heating and hot fluid circulation. However, these methods suffer from drawbacks such as high energy consumption, high production and operating costs, and complex downhole operations, placing significant pressure on oil production operations and cost control. To address this, superconducting hollow rods utilizing geothermal energy have emerged. These rods can transport heat from deep within the geothermal environment to the wellhead area, raising the temperature there and fundamentally preventing wax deposition in the wellbore. This reduces the operating costs of oil wells and aligns with current policies aimed at energy conservation, emission reduction, and carbon reduction.

[0004] Announcement No. CN211230414U discloses an environmentally friendly double-hollow rod ground circulation heating device. The device uses a second heater and a heating copper plate to preheat the heat exchange fluid in the heat exchange box. A circulating water pump then guides the heat exchange fluid from the inlet pipe into the inner tube body for further heating. Since the liquid has already been preheated, the heating speed within the inner tube body is increased. The first heater powers the heating copper tube, and the spiral copper tube design increases the heating area of ​​the liquid, improving thermal conductivity. Finally, the heat exchange fluid conducts heat to the inner tube body, raising its temperature. The inner tube body, inserted into the crude oil, then transfers heat to the crude oil, causing it to rise. Simultaneously, the heat exchange fluid returns from the outlet pipe to the heat exchange box, is preheated, and is discharged again.

[0005] This existing technology requires energy consumption and does not utilize the deep thermal energy of oil wells.

[0006] Announcement No. CN217003601U discloses a high-strength electrofusion fitting for deep oil wells, comprising a fitting body, a resistance wire disposed on the inner wall of the fitting body, and an electrode disposed on the outer wall of the fitting body and connected to the resistance wire. Expansion sealing rings are provided at both ends of the inner wall of the fitting body. An inflation part is provided inside the fitting body, which inflates the expansion sealing rings as the temperature rises. A limiting mechanism is provided within the inflation part to prevent the expansion sealing rings from resetting after cooling. When the resistance wire is heated, the high temperature drives the inflation part to inflate the expansion sealing rings, causing them to expand and tightly grip the oil pipe for sealing. When the temperature drops, the limiting mechanism prevents the expansion sealing rings from returning to their initial state. This electrofusion fitting can improve the sealing performance between itself and the mating pipe material.

[0007] The existing technology used for heat pipe connection sealing has the problem that the expansion chamber and compression chamber are heated to similar temperatures, making it impossible to effectively expand and seal.

[0008] Announcement No. CN208687211U discloses a connection structure for hot fluid pipelines. By combining a protrusion with a limiting groove on the hot fluid pipe and then fixing it with a flexible fixing plate, the connection strength between the connecting pipe and the hot fluid pipe is improved. A heat-conducting plate and an elastic airbag are provided in the second groove. The nitrogen gas in the elastic airbag expands when heated, which tightly fits the elastic sealing strip with the second sealing layer, thereby improving the sealing effect of the connecting pipe and the hot fluid pipe.

[0009] The existing technology allows heat to be dissipated directly through the connecting pipe of the elastic airbag, resulting in a large heat dissipation area. However, when heat flow fluctuates, it cannot provide a long-term stable seal.

[0010] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of the present invention. Regarding the more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the Invention

[0011] In view of the above-mentioned defects in the existing technology, the purpose of this invention is to provide a heat pipe sealing assembly and connection method, as well as a superconducting hollow rod enhanced heat exchange system.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] On one hand, the present invention provides a heat pipe sealing assembly, the sealing assembly including an inner core ring, a heat transfer sealing unit disposed on the inner wall of the inner core ring, the heat transfer sealing unit including a heat transfer element and an expansion sealing element, a heat transfer channel disposed inside the inner core ring, the heat transfer channel connecting the heat transfer element and the expansion sealing element; a pressure-transferring mechanism disposed inside the heat transfer channel; and a connector, a heat-conducting element disposed through the pipe wall of the connector, after the inner core ring is connected to the outer wall of the connector, the heat transfer element and the heat-conducting element come into contact.

[0014] Furthermore, two heat transfer sealing units are provided on the inner wall of the inner core ring;

[0015] Specifically, the heat transfer channel includes a guide channel and branch pipes;

[0016] Specifically, one end of the guide channel is located on the inner wall of the inner core ring, and the other two ends of the guide channel are embedded inside the inner core ring. The heat transfer element is connected to one end of the guide channel.

[0017] Specifically, one end of the branch pipe is located on the inner wall of the inner core ring, the other two ends of the branch pipe are connected to the guide channel, and the expansion seal is provided at one end of the branch pipe;

[0018] Specifically, the expansion seal is a bladder ring, which is connected to the branch pipe. When there is no pressure, the bladder ring is in an inwardly flat state.

[0019] Specifically, the heat-conducting element is a heat-conducting probe.

[0020] Furthermore, the inner core ring has a central groove on its inner wall, and one end of the guide channel in the two heat transfer sealing units is connected to the bottom of the central groove.

[0021] Specifically, one end of the guide channel is connected to the guide tube, and the heat transfer element is a movable sleeve, which is nested and slidably connected to the guide tube;

[0022] Specifically, the inner core ring is provided with an elastic pressurizing mechanism in the central groove. The elastic pressurizing mechanism is connected to the movable sleeve, and the elastic pressurizing mechanism enables the movable sleeve to fully contact the heat-conducting component.

[0023] Furthermore, a pressure-transmitting mechanism is provided inside the guide channel between the branch pipe and the movable sleeve;

[0024] Specifically, the pressure transmission mechanism includes a front limiting inner ring, a squeezing block, and a rear limiting inner ring arranged in sequence, with the front limiting inner ring close to the branch pipe;

[0025] Specifically, the space between the extrusion block and the movable sleeve is filled with a thermal expansion medium, and the space between the extrusion block and the bladder ring is filled with a pressure transmission medium.

[0026] Furthermore, the outer wall of the connector is provided with a sealing groove ring and a recessed ring;

[0027] Specifically, the sealing groove ring corresponds to the bladder ring, the groove ring is located on the side of the sealing groove ring near the end face of the connector, the bottom of the groove ring is provided with a heat-conducting probe, the heat-conducting probe extends into the interior of the connector, and the movable sleeve can be inserted into the groove ring.

[0028] Furthermore, in a connector and a heat transfer sealing unit, the number of heat transfer elements, guide channels and heat conduction probes are the same, each with at least two, and they are evenly distributed along the circumference of the inner core ring;

[0029] Specifically, the number of the bladder rings and the sealing groove rings are the same and correspond one-to-one. At least two bladder rings are arranged at equal intervals, and a guide channel connects to a branch pipe with the same number of bladder rings.

[0030] Furthermore, a sealing arc ring is installed inside the sealing groove ring;

[0031] Specifically, the outer wall of the connector is provided with an external thread section on the side of the sealing groove ring away from the connector, and the inner core ring is provided with internal thread sections at both ends, and the external thread section and internal thread section of the connector are connected.

[0032] Furthermore, the elastic pressure mechanism includes a first magnetic plate and a second magnetic plate;

[0033] Specifically, the first magnetic plate is fixedly connected to the corresponding movable sleeves in the two heat transfer sealing units. The first magnetic plate is located in the central groove, and the second magnetic plate is embedded in the bottom of the central groove. The second magnetic plate is arranged corresponding to the first magnetic plate, and there is a repulsive force between the second magnetic plate and the first magnetic plate.

[0034] Furthermore, the inner core ring is provided with an unlocking mechanism, which includes a spring-loaded pressure post and a magnetic plate.

[0035] Specifically, a guide hole is provided in the middle of the magnetic plate two, and a through groove is provided on the outer wall of the inner core ring. The through groove is connected to the central groove and corresponds to the guide hole. The spring pressure column is slidably disposed in the through groove.

[0036] Specifically, the magnetic plate three is connected to the bottom end of the spring-pressing column, the magnetic plate three and the magnetic plate one are attracted to each other, and the bottom end of the spring-pressing column can pass through the through groove and the guide hole so that the magnetic plate three and the magnetic plate one can contact each other.

[0037] Furthermore, the outer surface of the inner core ring is provided with two mating outer shell inner threaded sleeves;

[0038] Specifically, sealing rings are provided between the two inner threaded sleeves of the outer shell and the inner core ring, and between the two inner threaded sleeves of the outer shell;

[0039] Specifically, a temperature detector is fixedly connected to both the top and bottom ends of the inner core ring. The detection end of the temperature detector is equipped with a detection probe that penetrates the inner threaded sleeve of the outer shell. A signal transmitter is electrically connected inside the temperature detector.

[0040] Furthermore, of the two connected connectors, one connector has a convex ring structure on its end face, and the other connector has a concave ring structure on its end face.

[0041] Secondly, the present invention provides a method for connecting a heat pipe sealing assembly, using a heat pipe sealing assembly as described in one aspect, comprising the following steps:

[0042] S1. Open a connector on the pipe section that needs to be connected, and screw the two connectors into the inner core ring through the upper and lower parts respectively. During the screwing process, the end of the connector will slide inward and retract into the center groove.

[0043] S2. After the two connectors are screwed in, the retractable movable sleeve falls and gets into the upper groove ring of the connector, so that the bottom of the movable sleeve abuts against the heat-conducting probe installed on the groove ring, thus completing the installation of the connector and the inner core ring.

[0044] S3. The heat-conducting probe will extend the heat flow to the contacting movable sleeve. The movable sleeve is heated, causing the thermal expansion medium filled between the extrusion block and the movable sleeve in the guide channel to expand. The expansion pressure pushes the extrusion block in the inner ring of the front limit. The extrusion block squeezes the pressure transmission medium in the guide channel and the branch pipe on the other side, causing the bladder ring connected to the branch pipe to bulge. The bulging bladder ring fills the sealing groove ring opened on the outer wall of the connector to strengthen the seal.

[0045] S4. When it is necessary to disassemble the sealing assembly, press the spring lower column to make magnetic plate three contact magnetic plate one, lift the spring lower column to make the movable sleeve disengage from the groove ring, unscrew the connector, and remove the inner core ring.

[0046] Secondly, the present invention provides a superconducting hollow rod enhanced heat exchange system, comprising a hollow rod body, wherein the hollow rod body comprises a heat absorption tube body, an insulation tube body, and a heat dissipation tube body arranged sequentially from bottom to top; the heat absorption tube body, the insulation tube body, and the heat dissipation tube body are connected by the sealing assembly described in claim 1; and connectors are provided at both ends of the heat absorption tube body, the insulation tube body, and the heat dissipation tube body.

[0047] Furthermore, the insulation pipe body includes at least two modular pipe bodies, which are connected to each other by a sealing assembly, and each of the modular pipe bodies has a connector at both ends;

[0048] Specifically, the inner wall of the module tube is equipped with a thermal insulation medium layer, and the thermal insulation medium layer is thinned with a slope at the location of the heat conduction probe.

[0049] Furthermore, the heat equalization assembly includes a spiral heat-absorbing plate, the upper and lower ends of which are fixedly connected to the outer wall of the heat-absorbing tube body through a mounting ring. A heat-conducting pin is provided on the inner wall of the spiral heat-absorbing plate, and the heat-conducting pin penetrates the outer wall of the heat-absorbing tube body and extends into the interior of the heat-absorbing tube body.

[0050] Compared with the prior art, the present invention has the following advantages:

[0051] 1. This invention solves the problem that existing multi-segment connected assembled superconducting hollow rods rely on internal and external thread seals, which may have tiny gaps that expand due to complex environmental factors deep underground, thus affecting heat exchange efficiency. In use, this invention uses a heat equalization component to increase the outer wall surface area of ​​the heat absorption tube, thereby improving heat exchange capacity. It also utilizes the gas thermal expansion principle and magnetic repulsion effect of the sealing component to seal the connection gaps of the assembled superconducting hollow rods, thereby strengthening the tightness of the assembly.

[0052] 2. This invention adopts a modular design for the insulation tube body, which is flexibly combined from multiple modular tube sections. The number of modular tube sections can be easily adjusted to match diverse application scenarios and heat requirements. Each modular tube section undertakes a portion of the heat transfer task, thereby distributing pressure and improving thermal stability and efficiency.

[0053] 3. This invention increases the outer surface area of ​​the heat-absorbing tube by setting an installation ring, a spiral heat-absorbing plate, and a heat-conducting pin, thereby improving the heat exchange capacity with the geothermal energy of the stratum. At the same time, the spiral shape is conducive to the spiral transfer of heat, so that the heat can be more evenly distributed on the heat-absorbing tube. The heat-conducting pin can directly transfer the heat absorbed by the spiral heat-absorbing plate to the working medium, thereby accelerating the heating and vaporization process of the working medium.

[0054] 4. This invention enhances the sealing effect of the sealing component and the connector by utilizing the heat inside the pipe. When the mechanical connection part faces complex environmental factors such as pressure fluctuations, temperature changes and media corrosion deep in the formation, and a connection gap is generated, the bladder ring can block and protect it, avoiding the occurrence of heat leakage problems.

[0055] 5. This invention uses a heat-conducting probe to ensure that the movable sleeve receives more heat than the bladder ring, and by setting a compression block, the heat dissipation area of ​​the heated and expanding gas is reduced, thereby improving the stability of the seal.

[0056] 6. By setting up a second magnetic plate, the corresponding movable sleeves in the two heat transfer sealing units can act as limiting elements to lock the two connectors. The setting of magnetic plates one and two magnetic plates can enhance the tight contact between the movable sleeves and the heat conduction probes. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the hollow rod assembly structure of the present invention.

[0058] Figure 2 This is a front view of the hollow rod body of the present invention.

[0059] Figure 3 This is a schematic diagram of the module tube port structure of the present invention.

[0060] Figure 4 This is a side sectional view of the module tube body of the present invention.

[0061] Figure 5 For the present invention Figure 4 Enlarged view of point A.

[0062] Figure 6 This is a schematic diagram of the heat absorption tube structure of the present invention.

[0063] Figure 7 This is a partial structural diagram of the spiral heat absorber of the present invention.

[0064] Figure 8 This is a schematic diagram of the internal structure of the inner core ring of the present invention.

[0065] Figure 9 For the present invention Figure 8 Enlarged view of point B.

[0066] Figure 10 This is a schematic diagram of the location and structure of the thermal insulation medium layer of the present invention.

[0067] Figure 11 This is a schematic diagram of the sealing assembly structure of the present invention.

[0068] Figure 12 This is a schematic diagram of the internal structure of the L-shaped guide channel of the present invention.

[0069] Figure 13 This is a schematic diagram of the position and structure of the capsule ring of the present invention.

[0070] Figure 14 This is a schematic diagram of the temperature detector location structure according to the present invention.

[0071] In the diagram: 1. Hollow rod; 2. Heat absorber tube; 3. Insulating tube; 4. Heat dissipation tube; 5. Heat spreader assembly; 51. Mounting ring; 52. Spiral heat absorber fin; 53. Thermal conductive pin; 6. Module tube; 7. Sealing groove ring; 8. Groove ring; 9. Thermal conductive probe; 10. Sealing assembly; 101. Inner core ring; 102. Central groove; 103. Guide L-shaped channel; 104. Branch pipe; 105. Enclosure ring; 106. Inner... 107. Threaded section; 108. Movable sleeve; 109. Front limit inner ring; 1010. Extrusion block; 1011. Magnetic plate one; 1012. Return spring; 11. Sealing arc ring; 12. External threaded section; 13. Magnetic plate two; 14. Guide hole; 15. Through groove; 16. Spring pressing column; 17. Magnetic plate three; 18. Inner threaded sleeve of outer shell; 19. Sealing ring; 20. Temperature detector; 21. Detection probe; 22. Thermal insulation medium layer. Detailed Implementation

[0072] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] Example 1:

[0074] Please see Figures 1 to 14 The present invention provides a superconducting hollow rod enhanced heat exchange system, comprising a hollow rod body 1, wherein the hollow rod body 1 comprises a heat absorption tube body 2, a heat insulation tube body 3, and a heat dissipation tube body 4, wherein the heat absorption tube body 2, the heat insulation tube body 3, and the heat dissipation tube body 4 are connected by a sealing assembly 10.

[0075] The heat-absorbing tube body 2 is located at the lower part of the hollow rod body 1 and is filled with a working medium. The outer wall of the heat-absorbing tube body 2 is provided with a heat-spreading component 5, which is used to expand the thermal conductivity contact area of ​​the heat-absorbing tube body 2 and uniformly heat the working medium.

[0076] The heat insulation tube 3 is located in the middle of the hollow rod 1. The heat insulation tube 3 is composed of multiple modular tubes 6. One end of each modular tube 6 is concave and the other end is convex. The modular tubes 6 are connected to each other by a sealing assembly.

[0077] The heat dissipation pipe 4 is located on the upper part of the hollow rod 1.

[0078] Further, please refer to Figure 4 , Figure 5 , Figures 8-14The sealing assembly 10 includes an inner core ring 101. Two heat transfer sealing units are disposed on the inner wall of the inner core ring 101. Each heat transfer sealing unit includes a heat transfer element and an expansion sealing element. A heat transfer channel is disposed within the inner core ring 101, connecting the heat transfer element and the expansion sealing element. The heat transfer channel is filled with a thermally expanding medium. A heat-conducting element is disposed through the connecting wall of the heat-absorbing tube 2, the module tube 6, and the heat-dissipating tube 4. After the inner core ring 101 is connected to the outer wall of the connecting head, the heat transfer element contacts the heat-conducting element. Heat is discharged from the tube body through the heat-conducting element, which then transfers the heat to the heat transfer element. The heat transfer element heats the gas in the heat transfer channel, and the thermally expanding medium expands and supports the expansion sealing element, thus achieving a seal between the sealing assembly 10 and the outer wall of the tube body.

[0079] Specifically, the heat transfer channel includes a guide L-shaped channel 103 and a branch pipe 104. One end of the guide L-shaped channel 103 is located on the inner wall of the inner core ring 101, and the other two ends of the guide L-shaped channel 103 are embedded inside the inner core ring 101. The heat transfer element is connected to one end of the guide L-shaped channel 103. One end of the branch pipe 104 is located on the inner wall of the inner core ring 101, and the other two ends of the branch pipe 104 are connected to the guide L-shaped channel 103. An expansion seal is provided at one end of the branch pipe 104, and at least one branch pipe 104 is provided.

[0080] Specifically, the expansion seal is a bladder ring 105, which is connected to the branch pipe 104. When there is no pressure, the bladder ring 105 is in an inwardly flat state.

[0081] Specifically, the heat-conducting component is a heat-conducting probe 9.

[0082] Furthermore, the inner core ring 101 has a central groove 102 on its inner wall. One end of the guide L-shaped channel 103 in the two heat transfer sealing units is connected to the bottom of the central groove 102. One end of the guide L-shaped channel 103 is connected to the guide tube. The heat transfer component is a movable sleeve 107. The movable sleeve 107 is nested and slidably connected to the guide tube. The inner core ring 101 has an elastic pressurizing mechanism in the central groove 102. The elastic pressurizing mechanism is connected to the movable sleeve 107. The elastic pressurizing mechanism allows the movable sleeve 107 to fully contact the heat transfer component.

[0083] Among them, the 107 active sleeve is made of materials with heat-conducting properties, such as silver and copper.

[0084] Furthermore, the outer wall of the connector is provided with a sealing groove ring 7 and a recessed ring 8. The sealing groove ring 7 corresponds to the bladder ring 105, and the recessed ring 8 is located on the side of the sealing groove ring 7 near the end face of the connector. A heat-conducting probe 9 is provided at the bottom of the groove of the recessed ring 8, and the heat-conducting probe 9 extends into the interior of the connector. The movable sleeve 107 can be inserted into the recessed ring 8. The sealing groove ring 7 increases the sealing area of ​​the bladder ring 105 after expansion, thus enhancing the sealing effect.

[0085] Specifically, the sealing groove ring 7 is a hemispherical concave arc ring.

[0086] Specifically, in a connector and a heat transfer sealing unit, the number of heat transfer elements, guide L-shaped channels 103 and heat conduction probes 9 are the same, with at least two of each, and they are evenly distributed along the circumference of the inner core ring 101.

[0087] Specifically, the number of the bladder rings 105 and the sealing groove rings 7 are the same and correspond one-to-one. At least two bladder rings 105 are equidistantly arranged, and a guide L-shaped channel 103 connects to the branch pipes 104 with the same number of bladder rings 105. Preferably, three sealing groove rings 7 are provided.

[0088] Furthermore, a sealing arc ring 11 is installed inside the sealing groove ring 7, and external thread sections 12 are provided on the outer wall of the connector on the side of the sealing groove ring 7 away from the connector. Internal thread sections 106 are provided at both ends of the inner core ring 101, and the external thread section 12 and internal thread section 106 of the connector are connected. The sealing arc ring 11, as an additional sealing layer, fits tightly against the bottom wall of the sealing groove ring 7, forming a reliable barrier. In conjunction with the subsequent sealing assembly 10, it can effectively prevent heat leakage and interference from the external environment.

[0089] Furthermore, the elastic pressurization mechanism includes a first magnetic plate 1010 and a second magnetic plate 13. The first magnetic plate 1010 is fixedly connected to the corresponding movable sleeves 107 in the two heat transfer sealing units. The first magnetic plate 1010 is located in the central groove 102, and the second magnetic plate 13 is embedded in the bottom of the central groove 102. The second magnetic plate 13 is correspondingly arranged with the first magnetic plate 1010. There is a repulsive force between the second magnetic plate 13 and the first magnetic plate 1010, thereby using the magnetic repulsion effect to press the movable sleeves 107 at all times, strengthening the tight contact between the movable sleeves 107 and the heat conduction probe 9. At the same time, by setting the second magnetic plate 13 as a bridge connecting the two movable sleeves 107, the two movable sleeves 107 can be moved synchronously.

[0090] Specifically, the groove wall of the groove ring 8 is set as a conical surface, so that the connector can squeeze the movable sleeve 107 during the process of unscrewing the inner core ring.

[0091] Furthermore, a pressure-transmitting mechanism is provided inside the guide L-shaped channel 103 between the branch pipe 104 and the movable sleeve 107. The pressure-transmitting mechanism includes a front limiting inner ring 108, a squeezing block 109, and a rear limiting inner ring arranged in sequence. The front limiting inner ring 108 is close to the branch pipe 104. The space between the squeezing block 109 and the movable sleeve 107 is filled with a thermal expansion medium, and the space between the squeezing block 109 and the bladder ring 105 is filled with a pressure-transmitting medium. This arrangement can reduce the heat dissipation area, improve the stability of the seal, and allow the thermal expansion medium to fully absorb heat and expand, pushing the squeezing block 109. The squeezing block 109 squeezes the pressure-transmitting medium, causing the bladder ring 105 to expand. The movement space of all squeezing blocks 109 is the expansion size of all bladder rings 105.

[0092] Preferably, the thermal expansion medium is carbon dioxide gas, and the pressure transmission medium is air or hydraulic oil.

[0093] Specifically, in a method for quick reset of the compression block 109, a reset spring 1011 is provided between the compression block 109 and the rear limiting inner ring. The reset spring 1011 is fixedly connected to the compression block 109 and the rear limiting inner ring, and the compression block 109 is quickly reset by the stretching action of the reset spring 1011.

[0094] Specifically, another method for quick reset of the compression block 109 is to provide a reset spring 1011 between the compression block 109 and the front limiting inner ring 108, so that the compression block 109 can be quickly reset by the elastic force of the reset spring 1011 after being compressed.

[0095] Furthermore, in the two connected connectors, one connector has a convex ring structure on its end face, and the other connector has a concave ring structure on its end face, so as to ensure the coaxiality of the two connectors.

[0096] In this embodiment, a superconducting hollow rod is placed in the wellbore to extract geothermal energy. This energy is absorbed by the heat-absorbing tube 2 (evaporation section), then transferred upwards by the insulated tube 3 (transmission section), and finally heated by the heat-dissipating tube 4 (heat dissipation section) to prevent wax deposition at the wellhead, effectively preventing wax buildup in the wellbore. During the heat absorption phase, the working medium filled in the heat-absorbing tube 2 exhibits ultra-low resistance under specific conditions, greatly improving heat transfer efficiency. Furthermore, the deployment of the heat-equalizing component 5 further expands the thermal contact surface of the heat-absorbing tube 2, ensuring uniform heating of the working medium and effectively avoiding the risks of localized overheating or uneven cooling, thus achieving overall... The surface enhances the system's heat transfer efficiency and stability; the insulating tube 3 adopts a modular design, which is flexibly combined from multiple modular tubes 6, and the number of modular tubes 6 can be easily adjusted to match diverse application scenarios and heat requirements; and the sealing component 10 can use the principle of gas thermal expansion to seal the outer wall of the connection between the modular tube 6, the heat absorption tube 2, and the heat dissipation tube 4. The movable sleeve 107 driven by magnetic repulsion strengthens the tightness between the connection. When facing complex environmental factors such as pressure fluctuations, temperature changes, and media corrosion deep in the formation, it can effectively ensure the normal operation of thermal energy, indirectly enhance the heat exchange effect, and better and more stably deal with the problem of wax deposition at the wellhead.

[0097] Example 2:

[0098] Based on Embodiment 1, in this embodiment, the magnetic plate 1010 enables the two sliding sleeves 107 to lock the two connectors connected to the inner core ring 101. The inner core ring 101 is provided with an unlocking mechanism, which includes a spring-pressing column 16 and a magnetic plate 17. The magnetic plate 13 has a guide hole 14 in the middle. The outer wall of the inner core ring 101 has a through groove 15, which communicates with the central groove 102. The through groove 15 corresponds to the guide hole 14. The spring-pressing column 16 is slidably disposed in the through groove 15. The magnetic plate 17 is connected to the bottom end of the spring-pressing column 16. There is an attraction between the magnetic plate 17 and the magnetic plate 1010. The bottom end of the spring-pressing column 16 can pass through the through groove 15 and the guide hole 14, so that the magnetic plate 17 contacts the magnetic plate 1010.

[0099] By setting up the through groove 15, the spring-pressing column 16, and the magnetic plate 17, when it is necessary to remove the two module tubes 6, the spring-pressing column 16 on the inner core ring 101 is pressed, so that the spring-pressing column 16 passes through the guide hole 14 in the middle of the magnetic plate 13, and magnetic plate 1010 and the movable sleeve 107 connected to the magnetic plate 1010 are magnetically attracted by the magnetic plate 17 connected to the bottom. Then, the force of pressing the spring-pressing column 16 is released, so that the spring-pressing column 16 drives the magnetic plate 1010 to rise. After the connector is removed, the spring-pressing column 16 is manually pulled up, so that the spring-pressing column 16 enters the through groove 15, and the magnetic plate 17 is magnetically disengaged from the magnetic plate 1010, so that the magnetic plate 1010 and the movable sleeve 107 fall back to their original positions.

[0100] Specifically, the spring-pressing column 16 includes a guide column, a guide rod, and a spring. The through groove 15 includes a countersunk head and a through hole. The guide column is slidably disposed in the countersunk head. The spring is disposed between the guide column and the bottom surface of the countersunk head. The guide rod is slidably disposed in the through hole. One end of the guide rod is fixedly connected to the guide column, and the other end of the guide rod is fixedly connected to the magnetic plate 17.

[0101] Further, please refer to Figure 11 and Figure 14 The inner core ring 101 is provided with two mating outer shell inner threaded sleeves 18. A sealing ring 19 is provided between the two outer shell inner threaded sleeves 18 and the inner core ring 101, and between the two outer shell inner threaded sleeves 18. This prevents well fluid from entering the central groove 102 through the unlocking mechanism, which would affect the service life of the sealing assembly 10, and at the same time enhances the sealing effect of the sealing assembly 10.

[0102] Furthermore, temperature detectors 20 are fixedly connected to both the top and bottom ends of the inner core ring 101. The detection end of the temperature detector 20 is equipped with a detection probe 21 that penetrates the inner threaded sleeve 18 of the outer shell. The temperature detector 20 is electrically connected to a signal transmitter. By setting the temperature detector 20 and the detection probe 21, the formation temperature at the junction of the heat absorption tube 2, the heat insulation tube 3 and the heat dissipation tube 4 can be detected, indirectly reflecting the temperature at the wellbore depth. The descent depth of the superconducting hollow rod can be determined according to the formation temperature at different depths of the wellbore, which is beneficial for the superconducting hollow rod to utilize geothermal energy more accurately.

[0103] Example 3:

[0104] Based on Embodiment 1, this embodiment provides a method for using the sealing assembly 10, including the following steps:

[0105] S1. The installation process is to first screw the two connectors into the inner core ring 101 through the upper and lower parts respectively. During the screwing process, the end of the connector will slide the movable sleeve 107 inward and retract it into the center groove 102.

[0106] S2. After the two connectors are screwed in, the convex ring structure and concave ring structure on the end face of the two connectors come into contact and close. The retracted movable sleeve 107 falls and gets into the upper groove ring 8 of the connector, so that the bottom of the movable sleeve 107 abuts against the heat-conducting probe 9 installed on the groove ring 8, thereby completing the installation of the connector and the inner core ring 101. The inner threaded sleeve 18 of the outer shell is screwed in to complete the installation of the sealing assembly.

[0107] S3. When heat is transferred from the lower part to the connection between the two module tubes 6, the heat-conducting probe 9 will extend the heat flow to the contacting movable sleeve 107 during the process. The central core column in the middle of the movable sleeve 107 is heated, causing the carbon dioxide gas filled between the extrusion block 109 and the movable sleeve 107 in the guide L-shaped channel 103 to expand when heated. The expansion pressure pushes the extrusion block 109 in the front limit inner ring 108, forcing it to slide. Then, the extrusion block 109 squeezes the gas in the space between the guide L-shaped channel 103 and the branch pipe 104 on the other side, causing the bladder ring 105 connected to the branch pipe 104 to bulge. The bulging bladder ring 105 fills the sealing groove ring 7 opened on the outer wall of the connector and matches with the sealing arc ring 11 on the sealing groove ring 7. This not only tightens the assembly of the inner core ring 101 and the connector, but also ensures that when the two connectors are connected, they can block and protect against the complex pressure fluctuations, temperature changes and media corrosion in the deep formation, so as to avoid leakage problems.

[0108] S4. When it is necessary to disassemble the sealing assembly, remove the inner threaded sleeve 18 of the outer shell, press the spring lower pressure column 16 to make the magnetic plate three 17 contact the magnetic plate one 1010, lift the spring lower pressure column 16 to make the movable sleeve 107 disengage from the groove ring 8. At this time, the connector can be unscrewed and the inner core ring 101 can be removed.

[0109] Example 4:

[0110] Based on Example 1, please refer to Figures 6-7 .

[0111] In this embodiment, the heat equalization assembly includes a spiral heat absorber 52. The upper and lower ends of the spiral heat absorber 52 are fixedly connected to the outer wall of the heat absorber tube 2 through a mounting ring 51. A heat-conducting pin 53 is provided on the inner wall of the spiral heat absorber 52. The heat-conducting pin 53 penetrates the outer wall of the heat absorber tube 2 and extends into the interior of the heat absorber tube 2 to contact the working medium.

[0112] Specifically, the mounting ring 51, the spiral heat-absorbing sheet 52, and the heat-conducting pin 53 are made of materials with good thermal conductivity, such as copper, to improve the heat transfer efficiency.

[0113] By setting up the mounting ring 51, the spiral heat absorber 52, and the heat-conducting pin 53, the heat transfer efficiency is improved. The spiral heat absorber 52 increases the outer wall surface area of ​​the heat absorber tube 2, thereby improving the heat exchange capacity with the surrounding environment. At the same time, the spiral shape is conducive to the spiral transfer of heat, so that the heat can be more evenly distributed on the heat absorber tube 2. The heat-conducting pin 53 penetrates the outer wall of the heat absorber tube 2 and extends into the interior to contact the working medium, enhancing the heat transfer. The heat-conducting pin 53 can directly transfer the heat absorbed on the spiral heat absorber 52 to the working medium, thereby accelerating the heating and vaporization process of the working medium.

[0114] Please see Figure 10 As shown, in this embodiment, the inner wall of the module tube 6 is equipped with a thermal insulation medium layer 22. The thermal insulation medium layer 22 is thinned at the location of the heat conduction probe 9 to fully expose the heat conduction probe 9. The slope angle is 40 to 45 degrees.

[0115] By thinning the insulation medium layer 22 with a slope, the heat flow from bottom to top can expand and accumulate as it passes through this section, which is beneficial to the operation of the heat conduction probe 9 and thus provides favorable conditions for the start-up of the sealing assembly 10.

[0116] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0117] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0118] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0119] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat pipe sealing assembly, the sealing assembly comprising an inner core ring, the inner core ring inner wall is provided with a heat transfer sealing unit, characterized in that, The heat transfer sealing unit includes a heat transfer element and an expansion sealing element. A heat transfer channel is provided inside the inner core ring, and the heat transfer channel connects the heat transfer element and the expansion sealing element. The heat transfer channel is equipped with a pressure transmission and separation mechanism. It also includes a connector, wherein a heat-conducting element is disposed through the tube wall of the connector, and after the inner core ring is connected to the outer wall of the connector, the heat transfer element comes into contact with the heat-conducting element.

2. A heat pipe seal assembly according to claim 1, wherein Two heat transfer sealing units are provided on the inner wall of the inner core ring; The heat transfer channel includes a guide channel and branch pipes; One end of the guide channel is located on the inner wall of the inner core ring, and the other two ends of the guide channel are embedded inside the inner core ring. The heat transfer element is connected to one end of the guide channel. One end of the branch pipe is located on the inner wall of the inner core ring, and the other two ends of the branch pipe are connected to the guide channel. The expansion seal is provided at one end of the branch pipe. The expansion seal is a bladder ring, which is connected to the branch pipe. When there is no pressure, the bladder ring is in an inwardly flat state. The heat-conducting component is a heat-conducting probe.

3. A heat pipe seal assembly according to claim 2, wherein The inner core ring has a central groove on its inner wall, and one end of the guide channel in the two heat transfer sealing units is connected to the bottom of the central groove. One end of the guide channel is connected to the guide tube, and the heat transfer element is a movable sleeve, which is nested and slidably connected to the guide tube; The inner core ring is provided with an elastic pressure mechanism in the central groove. The elastic pressure mechanism is connected to the movable sleeve, and the elastic pressure mechanism enables the movable sleeve to fully contact the heat-conducting component.

4. A heat pipe seal assembly according to claim 3, wherein The guide channel is equipped with a pressure-transmitting mechanism between the branch pipe and the movable sleeve; The pressure transmission mechanism includes a front limiting inner ring, a squeezing block, and a rear limiting inner ring arranged in sequence, with the front limiting inner ring close to the branch pipe; The space between the extrusion block and the movable sleeve is filled with a thermal expansion medium, and the space between the extrusion block and the bladder ring is filled with a pressure transmission medium.

5. A heat pipe seal assembly according to claim 4, wherein The outer wall of the connector is provided with a sealing groove ring and a recessed ring; The sealing groove ring corresponds to the bladder ring. The groove ring is located on the side of the sealing groove ring near the end face of the connector. A heat-conducting probe is provided at the bottom of the groove ring. The heat-conducting probe extends into the interior of the connector. The movable sleeve can be inserted into the groove ring.

6. A heat pipe sealing assembly according to claim 5, characterized in that, In a connector and a heat transfer sealing unit, the number of heat transfer elements, guide channels and heat conduction probes are the same, and at least two of each are provided, and they are evenly distributed along the circumference of the inner core ring; The number of the bladder rings and the sealing groove rings are the same and correspond one-to-one. At least two bladder rings are equidistantly arranged, and a guide channel connects to a branch pipe with the same number of bladder rings.

7. A heat pipe sealing assembly according to claim 5, characterized in that, A sealing arc ring is installed inside the sealing groove ring; The outer wall of the connector is provided with an external thread section on the side of the sealing groove ring away from the connector, and the inner core ring is provided with internal thread sections at both ends. The external thread section and the internal thread section of the connector are connected.

8. A heat pipe sealing assembly according to claim 5, characterized in that, The elastic pressure mechanism includes magnetic plate one and magnetic plate two; The first magnetic plate is fixedly connected to the corresponding movable sleeves in the two heat transfer sealing units. The first magnetic plate is located in the central groove, and the second magnetic plate is embedded in the bottom of the central groove. The second magnetic plate is arranged corresponding to the first magnetic plate, and there is a repulsive force between the second magnetic plate and the first magnetic plate.

9. A heat pipe sealing assembly according to claim 8, characterized in that, The inner core ring is provided with an unlocking mechanism, which includes a spring-loaded pressure column and a magnetic plate. A guide hole is provided in the middle of the magnetic plate 2, and a through groove is provided on the outer wall of the inner core ring. The through groove is connected to the central groove and corresponds to the guide hole. The spring pressure column is slidably disposed in the through groove. The magnetic plate three is connected to the bottom end of the spring-pressing column, and there is an attractive force between the magnetic plate three and the magnetic plate one. The bottom end of the spring-pressing column can pass through the through groove and the guide hole, so that the magnetic plate three and the magnetic plate one can come into contact.

10. A heat pipe sealing assembly according to claim 9, characterized in that, The inner core ring is provided with two mating outer shell inner threaded sleeves; A sealing ring is provided between the two inner threaded sleeves of the outer shell and the inner core ring, and between the two inner threaded sleeves of the outer shell; Temperature detectors are fixedly connected to both the top and bottom ends of the inner core ring. A detection probe that penetrates the inner threaded sleeve of the outer shell is installed at the detection end of the temperature detector. A signal transmitter is electrically connected inside the temperature detector.

11. A heat pipe sealing assembly according to claim 1, characterized in that, Of the two connected connectors, one connector has a convex ring structure on its end face, and the other connector has a concave ring structure on its end face.

12. A method for connecting a heat pipe sealing assembly, characterized in that, Using a heat pipe sealing assembly as described in claim 9 includes the following steps: S1. Open a connector on the pipe section that needs to be connected, and screw the two connectors into the inner core ring through the upper and lower parts respectively. During the screwing process, the end of the connector will slide inward and retract into the center groove. S2. After the two connectors are screwed in, the retractable movable sleeve falls and gets into the upper groove ring of the connector, so that the bottom of the movable sleeve abuts against the heat-conducting probe installed on the groove ring, thus completing the installation of the connector and the inner core ring. S3. The heat-conducting probe will extend the heat flow to the contacting movable sleeve. The movable sleeve is heated, causing the thermal expansion medium filled between the extrusion block and the movable sleeve in the guide channel to expand. The expansion pressure pushes the extrusion block in the inner ring of the front limit. The extrusion block squeezes the pressure transmission medium in the guide channel and the branch pipe on the other side, causing the bladder ring connected to the branch pipe to bulge. The bulging bladder ring fills the sealing groove ring opened on the outer wall of the connector to strengthen the seal. S4. When it is necessary to disassemble the sealing assembly, press the spring lower column to make magnetic plate three contact magnetic plate one, lift the spring lower column to make the movable sleeve disengage from the groove ring, unscrew the connector, and remove the inner core ring.

13. A superconducting hollow rod enhanced heat exchange system, comprising a hollow rod body, wherein the hollow rod body comprises a heat absorption tube body, a heat insulation tube body, and a heat dissipation tube body arranged sequentially from bottom to top; Its features are, The heat absorption tube, the heat insulation tube, and the heat dissipation tube are connected by the sealing assembly described in claim 1. Connectors are provided at both ends of the heat absorption tube, the heat insulation tube, and the heat dissipation tube.

14. A superconducting hollow rod enhanced heat transfer system according to claim 13, characterized in that, The insulation tube body includes at least two modular tube bodies, which are connected to each other by a sealing assembly, and each of the modular tube bodies is provided with a connector at both ends. The inner wall of the module tube is equipped with a thermal insulation medium layer, and the thermal insulation medium layer is thinned with a slope at the location of the heat conduction probe.

15. A superconducting hollow rod enhanced heat transfer system according to claim 13, characterized in that, The heat equalization assembly includes a spiral heat absorber plate. The upper and lower ends of the spiral heat absorber plate are fixedly connected to the outer wall of the heat absorber tube body through a mounting ring. A heat-conducting pin is provided on the inner wall of the spiral heat absorber plate. The heat-conducting pin penetrates the outer wall of the heat absorber tube body and extends into the interior of the heat absorber tube body.

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