Vertically buried geothermal heat exchange device

Abstract

The invention provides a vertically-buried geothermal heat exchange device, and mainly relates to the field of geothermal heat exchange equipment. A vertically-buried geothermal heat exchange device comprises a vertically-buried barrel, a heat exchange mechanism, a lifting mechanism and a hoisting mechanism. The device has the beneficial effects that the hoisting mechanism drives the lifting mechanism and the vertical burying barrel driving device to enter a well to be installed, and the hoisting mechanism is further matched with the lifting mechanism to press down the vertical burying barrel so that the vertical burying barrel can be installed in place; the lifting mechanism is driven by the hoisting mechanism to rotate so that limiting can be relieved, the lifting mechanism can ascend and descend relative to the vertical burying barrel, and the heat exchange pipeline can be driven by the lifting mechanism to ascend and descend so that the telescopic mechanism can be driven to extend. And then the telescopic mechanism drives the water flow in each water distribution pipe in the heat exchange pipeline to extend to the periphery of the vertical buried barrel for heat exchange, and the water flow subjected to heat exchange flows back into the heat exchange pipeline and is conveyed to the outside for heat supply.

Description

Technical Field

[0001] The present invention mainly relates to the field of geothermal heat exchange equipment, and in particular to a vertically buried geothermal heat exchange device. Background Art

[0002] The method of utilizing medium-deep geothermal energy is mainly to place the heat exchanger below the static water level or in dry hot rock without underground aquifers, and use heat conduction to extract heat from medium-deep geothermal water. The underground high-efficiency heat exchanger buried in the medium-deep geothermal well is a heat exchange device that can only exchange medium-deep underground thermal energy without extracting medium-deep underground hot water resources. It is a heat exchange device that rationally develops medium-deep geothermal energy for building heating.

[0003] The existing Chinese patent application with authorization announcement number CN109186112B discloses a deep hot dry rock and medium-deep geothermal source energy-gathering heat exchange device, the device includes a heat extraction device and a sleeve, the sleeve is installed below the heat extraction device, the heat extraction device includes an outer heat extraction sleeve, a central sleeve and an insulation pipe, the insulation pipe is arranged above the central sleeve, and the side wall of the insulation pipe is provided with a hollow interlayer; the sleeve includes an energy-gathering sleeve, a sleeve shell and a sleeve connecting seat for connecting the energy-gathering sleeve and the sleeve shell, the core of the sleeve shell is provided with a sleeve central pipe, and the pressure relief plug is fixedly installed on the inner side wall of the sleeve central pipe through a fixed connecting column. The present invention increases the heat exchange medium input into the heat exchange device, avoids the high-temperature heat exchange medium after heat exchange from dissipating heat again during transportation in the well, and improves the heat exchange efficiency, and the sleeve arranged avoids the pressure buildup in the well during the downhole process.

[0004] However, the deep hot dry rock and medium-deep geothermal source energy-concentrating heat exchange device has the following defects when used: 1. The heat exchange device in geothermal energy development and utilization is a key equipment, and its heat exchange efficiency directly affects the energy utilization efficiency. The current mainstream underground heat exchange device generally adopts vertical buried pipe technology, and the heat exchanger is buried deep in the underground aquifer in a fixed vertical state. The working principle of this device mainly relies on the heat conduction between the pipe wall and the surrounding geothermal water body. The heat exchange area is strictly limited to the narrow range where the surface of the heat exchange tube is in direct contact with the groundwater. Although this design has a stable structure and convenient construction, it exposes a significant efficiency bottleneck in actual operation: when the flow rate of the circulating fluid inside the device is When the reasonable threshold is exceeded, the high-speed flow of the fluid in the pipe will cause two thermodynamic problems. The turbulent effect of the fluid inside the pipe will intensify the heat exchange between the near-wall fluid and the pipe wall, resulting in a significant increase in the temperature gradient near the surface of the heat exchange tube. Although the convective heat transfer coefficient near the pipe wall will be improved, the core area of ​​the fluid far away from the pipe wall will be difficult to effectively participate in the heat exchange process due to the thinning of the laminar bottom layer. This phenomenon is particularly obvious in the vertical pipe structure. Since the fluid flows axially under the action of gravity, the radial temperature distribution shows obvious non-uniformity, which in turn affects the heat exchange efficiency. 2. In the development and utilization of geothermal energy, the soil and groundwater around geothermal wells contain rich thermal energy resources, but the structural design of existing heat exchange devices has failed to effectively develop this potential. The heat exchange area of ​​traditional vertical buried heat exchangers is strictly limited to the narrow range where the surface of the heat exchange tube is in direct contact with the fluid, which has significant limitations on the heat utilization of the soil and groundwater around the well. Summary of the invention

[0005] The object of the present invention is to provide a vertically buried geothermal heat exchange device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A vertical buried geothermal heat exchange device comprises a vertical buried barrel, a heat exchange mechanism, a lifting mechanism, and a hoisting mechanism. The heat exchange mechanism is arranged inside the vertical buried barrel, the lifting mechanism is arranged on the upper part of the heat exchange mechanism, the hoisting mechanism is arranged on the upper part of the lifting mechanism, and the heat exchange mechanism comprises: The heat exchange mechanism includes a heat exchange pipeline, and the heat exchange pipeline is installed inside the lifting mechanism; A telescopic mechanism, the telescopic mechanism is arranged around the heat exchange pipe and is in communication with the heat exchange pipe and passes through the vertical buried barrel and is in sliding connection with the vertical buried barrel; As a preferred embodiment of the present invention, a plurality of telescopic holes are arranged at equal intervals around the vertical buried barrel, a plurality of telescopic tubes are arranged inside the vertical buried barrel and connected to the telescopic holes, and a heat-resistant sealant layer is provided on the inner surface of the telescopic tubes.

[0007] As a preferred embodiment of the present invention, the heat exchange pipeline comprises: A lifting pipe, the lifting pipe is arranged inside the vertical buried barrel, a water inlet pipe is arranged on one side of the upper part of the lifting pipe, and a water outlet pipe is arranged on one side, the water inlet pipe and the lower part of the water outlet pipe are provided with a connecting block to be connected thereto, a plurality of water inlet splitting pipes are arranged on one side of the lower part of the connecting block to be connected with the water inlet pipe, a water outlet splitting pipe is arranged on the other side of the lower part of the connecting block to be connected with the water outlet pipe, the water inlet splitting pipe and the water outlet splitting pipe are arranged together in the lifting pipe, a limiting ring is fixedly provided on the outer periphery of the upper part of the lifting pipe, and the limiting rings are in two groups and are arranged in parallel; A lifting tube rotating shaft seat, wherein the lifting tube rotating shaft seats are arranged around the lifting tube at equal distances on the circumference, and through holes are opened at corresponding positions of the lifting tube and the lifting tube rotating shaft seat, and each of the through holes is provided with a water inlet water distribution pipe and a water outlet water distribution pipe passing through the inside; Thermally conductive gel, wherein the thermally conductive gel is filled into the gap between the water inlet water diversion pipe and the water outlet water diversion pipe inside the lifting pipe.

[0008] As a preferred embodiment of the present invention, the telescopic mechanism comprises: A sliding telescopic column, wherein the sliding telescopic column is arranged in the telescopic tube and is slidably connected thereto, a rotating shaft seat support seat is fixedly provided on the upper portion of the sliding telescopic column, and a sliding telescopic column rotating shaft seat is fixedly provided on the upper portion of the rotating shaft seat support seat; A spiral heat exchange tube, wherein the spiral heat exchange tube is arranged inside the sliding telescopic column, and the upper end of the spiral heat exchange tube passes through the rotating shaft support seat and is fixedly connected thereto; A heat exchange return pipe, the heat exchange return pipe is arranged inside the sliding telescopic column, and the bottom end of the heat exchange return pipe is connected to the bottom end of the spiral heat exchange pipe; A rotating shaft rod, the upper part of which is arranged inside the lifting tube rotating shaft seat and is rotatably connected thereto, the lower part of which is installed inside the sliding telescopic column rotating shaft seat and is rotatably connected thereto, a water outlet connecting pipe hole is opened through the rotating shaft rod, and a plurality of water inlet connecting pipe clamps are fixedly arranged at equal intervals on one side of the rotating shaft rod; A water outlet connecting pipe, the water outlet connecting pipe is arranged in the water outlet connecting pipe hole and is slidably connected thereto, the upper end of the water outlet connecting pipe is communicated with the corresponding water outlet water distribution pipe, and the lower end of the water outlet connecting pipe is communicated with the heat exchange return pipe; A water inlet connecting pipe is arranged inside each of the water inlet connecting pipe clamps and is slidably connected thereto, the upper end of the water inlet connecting pipe is communicated with the corresponding water inlet water distribution pipe, and the lower end of the water inlet connecting pipe is communicated with the spiral heat exchange tube.

[0009] As a preferred embodiment of the present invention, the lifting mechanism comprises: A rotating ring, which is sleeved on the outer circumference of the lifting tube and rotatably connected thereto and installed between the limiting rings, a supporting rod is fixedly arranged around the rotating ring, a vertical buried bucket cover is fixedly arranged at the outer end of each supporting rod, a plurality of limiting rods are fixedly arranged at equal distances in a circle at the lower part of the vertical buried bucket cover, a limiting plate is fixedly arranged at the lower end of the limiting rod, and a water pipe hole is opened at the center of the upper part of the vertical buried bucket cover; A limiting rod sleeve, a plurality of the limiting rod sleeves are fixedly arranged at equal intervals around the interior of the vertical buried barrel and correspond to the position of the limiting rod, the limiting rod is installed inside the limiting rod sleeve and is slidably connected thereto, an upper limiting disk groove is opened on one side of the lower portion of the limiting rod sleeve, a connecting plate is fixedly arranged on one side of the lower portion of the limiting rod sleeve, a lower limiting disk groove plate is fixedly arranged on the lower portion of the connecting plate, and a lower limiting disk groove is fixedly arranged on the upper portion of the lower limiting disk groove plate.

[0010] As a preferred embodiment of the present invention, the hoisting mechanism comprises: A lifting rod groove, wherein a plurality of the lifting rod grooves are fixedly arranged at equal distances on the upper part of the vertical buried barrel cover in a circumferential manner, a lifting rod limiting plate is fixedly arranged on one side of the upper part of the lifting rod groove, and a lifting rod limiting groove is opened at the lower part of the lifting rod limiting plate; A hoisting rod, a hoisting rod limiting column is provided at the bottom of the hoisting rod, the hoisting rod limiting column is installed in the hoisting rod groove and is slidably connected thereto, an oblique connecting rod is fixedly provided on the upper part of the hoisting rod, and a hoisting column is connected to the upper end of each oblique connecting rod.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. The water flow at the water inlet of the device is distributed through diversion into multiple groups of spiral heat exchange pipes for efficient heat exchange. This design ensures that each group of water flow can be evenly and fully distributed in the entire heat exchange system. Each group of spiral pipes provides a wide heat exchange area, so that each part of the water flow can have an optimized heat exchange process with the heat source. After passing through the complex but orderly flow path inside the spiral pipe, these water flows that have fully absorbed heat are reunited in the return pipe and further transported to the heating pipe system. In this process, the water flow not only undergoes the initial heat exchange treatment, but will also be further adjusted and processed in the subsequent stages to ensure that the heating service provided to the residents is both stable and efficient. This method effectively solves the problem of incomplete heat exchange caused by insufficient contact between the water flow and the heat exchange surface in traditional designs, thereby significantly improving the heat exchange efficiency and performance of the entire system; 2. By designing each spiral heat exchange pipe as a retractable structure, these spiral heat exchange pipes can be retracted into the interior of the device when the device is installed, thereby avoiding inconvenience or impact on the operation caused by space limitations during the installation process. This flexible design not only simplifies the installation process, but also reduces the physical obstacles that may be encountered during installation. Once the device is successfully placed in the well, further pressure can be applied to the top of the device. This action can trigger the internal mechanism to drive each spiral heat exchange tube to extend outward into the surrounding environment in the well. This design enables the spiral heat exchange tube to effectively expand its coverage, greatly increasing the contact area with the soil and groundwater at different locations in the well and around the well wall. By expanding the contact surface, the system can more efficiently absorb and release heat from the well environment, thereby significantly improving the heat exchange efficiency of the well heat source. This method not only improves the overall performance of the system, but also ensures efficient energy conversion even in a limited space, providing users with a more stable and reliable heating solution; 3. By setting up a special lifting structure, the device can not only achieve convenient lifting operation with the help of the mechanism, but also use this structure to accurately install the device at the bottom of the well. This design greatly simplifies the installation and positioning process of the device, ensuring that the device can be firmly and accurately placed in the predetermined position. Furthermore, the lifting structure also has rotation and lifting control functions, and can control the telescopic structure to perform corresponding telescopic movements through precise operations, thereby driving each spiral heat exchange pipe to extend. When the device needs to be maintained and lifted out of the well, the lifting structure can automatically drive the telescopic mechanism to contract, and safely and orderly retract each spiral heat exchange pipe into the device. This not only reduces the potential risk of damage to the external environment or the device itself during movement, but also greatly facilitates the handling and maintenance of the device. In this way, whether it is installation or subsequent maintenance operations, the entire system can operate in an efficient and flexible manner, ensuring the long-term stability and maintainability of the equipment, while also providing great convenience and safety for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the vertical buried barrel of the present invention; Figure 5 It is a schematic diagram of the local structure of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the heat exchange pipeline of the present invention; Figure 7 It is a schematic diagram of the local structure of the present invention; Figure 8 It is a schematic diagram of the local structure of the present invention; Fig. 9 It is a schematic diagram of the telescopic mechanism structure of the present invention; Fig.10 It is a schematic diagram of the local structure of the present invention; Fig.11 It is a schematic diagram of the cross-sectional structure of the spiral heat exchange tube of the present invention; Fig.12 It is a schematic diagram of the rotating shaft rod structure of the present invention; Fig.13 It is a schematic diagram of the rotating shaft rod structure of the present invention; Fig.14 It is a schematic diagram of the lifting mechanism structure of the present invention; Fig.15 It is a schematic diagram of the lifting mechanism structure of the present invention; Fig.16This is a schematic diagram of the structure of the vertical buried barrel cover of the present invention; Fig.17 It is a schematic diagram of the local structure of the present invention; Fig.18 It is a schematic diagram of the cross-sectional structure of the lifting tube of the present invention; Fig.19 It is a schematic diagram of the local structure of the present invention; Fig. 20 It is a schematic diagram of the local structure of the present invention; Fig.21 It is a structural schematic diagram of the hanging column of the present invention.

[0013] Numbers shown in the accompanying drawings: 10. Vertical buried barrel; 20. Heat exchange mechanism; 30. Lifting mechanism; 40. Hoisting mechanism; 50. Heat exchange pipeline; 60. Telescopic mechanism; 101. telescopic hole; 102. telescopic tube; 103. heat-resistant sealing rubber layer; 301, rotating ring; 302, supporting rod; 303, vertical buried barrel cover; 304, limiting rod; 305, limiting plate; 306, water pipe hole; 307, limiting rod sleeve; 308, upper limiting plate slot; 309, connecting plate; 3010, lower limiting plate slot plate; 3011, lower limiting plate slot; 401, hoisting rod slot; 402, hoisting rod limit plate; 403, hoisting rod limit slot; 404, hoisting rod; 405, hoisting rod limit column; 406, oblique connecting rod; 407, hoisting column; 501, lifting pipe; 502, water inlet pipe; 503, water outlet pipe; 504, connecting block; 505, water inlet water diversion pipe; 506, water outlet water diversion pipe; 507, limiting ring; 508, lifting pipe shaft seat; 509, through hole; 5010, thermal conductive gel; 601, sliding telescopic column; 602, shaft support seat; 603, sliding telescopic column shaft seat; 604, spiral heat exchange tube; 605, heat exchange return pipe; 606, shaft rod; 607, water outlet connecting pipe hole; 608, water inlet connecting pipe clamp; 609, water outlet connecting pipe; 6010, water inlet connecting pipe. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0015] See also Figure 1-Figure 21A vertical buried geothermal heat exchange device comprises a vertical buried barrel 10, a heat exchange mechanism 20, a lifting mechanism 30, and a hoisting mechanism 40, wherein the vertical buried barrel 10 is provided with a heat exchange mechanism 20 inside, the heat exchange mechanism 20 is provided with the lifting mechanism 30 on the upper part, the lifting mechanism 30 is provided with the hoisting mechanism 40 on the upper part, the heat exchange mechanism 20 comprises a heat exchange pipe 50 and a telescopic mechanism 60, the heat exchange pipe 50 is installed inside the lifting mechanism 30, the telescopic mechanism 60 is arranged around the heat exchange pipe 50 and is connected with the heat exchange pipe 50 and passes through the vertical buried barrel 10 to be slidably connected with the heat exchange pipe 50.

[0016] The above working principle is: the lifting mechanism 40 drives the lifting mechanism 30 and the vertical buried barrel 10 to drive the device into the well for installation, and the lifting mechanism 30 is further coordinated with the lifting mechanism 40 to press down the vertical buried barrel 10 to install it in place, and the lifting mechanism 40 drives the lifting mechanism 30 to rotate and release the limit so that it can be lifted and lowered relative to the vertical buried barrel 10, and the lifting mechanism 30 can further drive the heat exchange pipe 50 to be lifted and lowered and drive the telescopic mechanism 60 to extend around the vertical buried barrel 10, so that the telescopic mechanism 60 drives the water flow inside each water distribution pipe inside the heat exchange pipe 50 to extend to the surrounding of the vertical buried barrel 10 for heat exchange, and further returns the water flow after heat exchange to the inside of the heat exchange pipe 50 and transports it to the outside for heating.

[0017] Specific reference Figure 4-5 The vertical buried barrel 10 has a plurality of telescopic holes 101 arranged at equal intervals around the circumference. The vertical buried barrel 10 has a plurality of telescopic tubes 102 arranged inside the vertical buried barrel 10 and connected to the telescopic holes 101 . The inner surface of the telescopic tubes 102 is provided with a heat-resistant sealant layer 103 .

[0018] In this embodiment, the telescopic mechanism 60 can be installed inside the telescopic tube 102 to extend it to the outside of the telescopic hole 101. The heat-resistant sealant layer 103 provided on the inner surface of the telescopic tube 102 cooperates with the parts of the telescopic mechanism 60 to prevent external heat source liquid from entering the interior of the device and affecting the interior of the device.

[0019] Specific reference Figure 6-8, 18-20, the heat exchange pipe 50 includes a lifting pipe 501, a lifting pipe rotating shaft seat 508, and a thermal conductive gel 5010. The lifting pipe 501 is arranged inside the vertical buried barrel 10. A water inlet pipe 502 is arranged on one side of the upper part of the lifting pipe 501, and a water outlet pipe 503 is arranged on one side. The water inlet pipe 502 and the water outlet pipe 503 are connected to each other at the lower part by a connecting block 504. A plurality of water inlet water splitting pipes 505 are arranged on one side of the lower part of the connecting block 504 to connect with the water inlet pipe 502. A water outlet water splitting pipe 506 is arranged on the other side of the lower part of the connecting block 504 to connect with the water outlet pipe 503. The water inlet water splitting pipe 505 is connected to the water outlet pipe 503. The water distribution pipeline 506 is jointly arranged in the lifting tube 501. A limiting ring 507 is fixedly provided on the outer periphery of the upper part of the lifting tube 501. The limiting ring 507 is in two groups and is arranged in parallel. The lifting tube rotating shaft seat 508 is equidistantly arranged around the lifting tube 501. Through holes 509 are opened at corresponding positions of the lifting tube 501 and the lifting tube rotating shaft seat 508. Each of the through holes 509 is respectively penetrated by an inlet water distribution pipeline 505 and an outlet water distribution pipeline 506. The thermal conductive gel 5010 is filled in the gap between the inlet water distribution pipeline 505 and the outlet water distribution pipeline 506 in the lifting tube 501.

[0020] In this embodiment, water is introduced into the device through the water inlet pipe 502, and the water after heat exchange is transported out of the device through the water outlet pipe 503 for heating. The water in the water inlet pipe 502 is further diverted into each of the water inlet pipes 505, and each of the water inlet pipes 505 and the telescopic mechanism 60 allow the water to dissipate heat, and the water is further flowed into each of the water outlet pipes 506, and the water after heat exchange in each of the water outlet pipes 506 is merged into the water outlet pipe 503 for output, thereby completing the heat exchange cycle. The water inlet water diversion pipe 505 and the water outlet water diversion pipe 506 are mixed and installed in the lifting pipe 501 at the same time, so that a certain degree of heat exchange is formed in the process of water circulation, thereby making the water temperature in the circulation increase faster, and further filling the gap between the water inlet water diversion pipe 505 and the water outlet water diversion pipe 506 in the lifting pipe 501 with the thermal conductive gel 5010 to improve the heat exchange efficiency inside the lifting pipe 501, and further make the lifting pipe 501 movable and movable, thereby driving the telescopic mechanism 60 to be telescopic.

[0021] Specific reference Figure 9-13The telescopic mechanism 60 includes a sliding telescopic column 601, a spiral heat exchange tube 604, a heat exchange return pipe 605, a rotating shaft rod 606, a water outlet connecting pipe 609, and a water inlet connecting pipe 6010. The sliding telescopic column 601 is arranged in the telescopic tube 102 and is slidably connected thereto. A rotating shaft seat support 602 is fixedly provided on the upper part of the sliding telescopic column 601, and a sliding telescopic column rotating shaft seat 603 is fixedly provided on the upper part of the rotating shaft seat support 602. The spiral heat exchange tube 604 is penetrated inside the sliding telescopic column 601, and the upper end of the spiral heat exchange tube 604 penetrates the rotating shaft seat support 602 and is fixedly connected thereto. The heat exchange return pipe 605 is penetrated inside the sliding telescopic column 601, and the bottom end of the heat exchange return pipe 605 is connected to the bottom end of the spiral heat exchange tube 604. The upper part of the rotating shaft rod 606 is arranged on the lifting tube The interior of the rotating shaft seat 508 is rotatably connected to it, the lower part of the rotating shaft rod 606 is installed in the interior of the sliding telescopic column rotating shaft seat 603 and is rotatably connected to it, a water outlet connecting pipe hole 607 is opened through the interior of the rotating shaft rod 606, and a plurality of water inlet connecting pipe clamps 608 are fixedly provided at equal intervals on one side of the rotating shaft rod 606, the water outlet connecting pipe 609 is arranged in the water outlet connecting pipe hole 607 and is slidably connected to it, the upper end of the water outlet connecting pipe 609 is communicated with the corresponding water outlet water distribution pipe 506, and the lower end of the water outlet connecting pipe 609 is communicated with the heat exchange return pipe 605, the water inlet connecting pipe 6010 is arranged in each of the water inlet connecting pipe clamps 608 and is slidably connected to it, the upper end of the water inlet connecting pipe 6010 is communicated with the corresponding water inlet water distribution pipe 505, and the lower end of the water inlet connecting pipe 6010 is communicated with the spiral heat exchange tube 604.

[0022] In this embodiment, the lifting tube 501 is lifted and lowered to drive the lifting tube rotating shaft seat 508 provided around it to lift and lower, and further drive the rotating shaft rod 606 rotatably connected to the lifting tube rotating shaft seat 508 and the sliding telescopic column rotating shaft seat 603 provided at the lower part of the rotating shaft rod 606 to move, thereby driving the sliding telescopic column 601 to slide and telescope in the telescopic tube 102, thereby driving the spiral heat exchange tube 604 and the heat exchange return water pipe 605 to telescope along with the sliding telescopic column 601, and further connecting the water inlet water distribution pipe 505 with the spiral heat exchange tube 604 through the water inlet connecting pipe 6010 provided inside the rotating shaft rod 606, so that the water flow of the water inlet water distribution pipe 505 flows into the spiral heat exchange tube 604 and then flows with the spiral heat exchange tube 604. The underground heat source is used for heat exchange, and the water after heat exchange is further introduced into the heat exchange return pipe 605 connected with the spiral heat exchange tube 604, and the heat exchange return pipe 605 is connected with the outlet water separation pipe 506 through the outlet water connection pipe 609 provided on the side of the rotating shaft rod 606, and the water after heat exchange is introduced into the outlet water separation pipe 506 and further introduced into the outlet water pipe 503 for water flow transportation, and the outlet water connection pipe 609 and the inlet water connection pipe 6010 are further slidably connected with the rotating shaft rod 606, and each pipe is kept with a certain length margin, so that the outlet water connection pipe 609 and the inlet water connection pipe 6010 will not be affected during the rotation of the rotating shaft rod 606, thereby ensuring that the pipes will not be pulled during the extension and retraction of the telescopic mechanism 60.

[0023] Specific reference Figure 14-17 The lifting mechanism 30 includes a rotating ring 301 and a limiting rod sleeve 307. The rotating ring 301 is sleeved on the outer periphery of the lifting tube 501 and is rotatably connected thereto and installed between the limiting rings 507. Support rods 302 are fixedly arranged around the rotating ring 301. A vertical buried bucket cover 303 is fixedly arranged at the outer end of each support rod 302. A plurality of limiting rods 304 are fixedly arranged at equal distances in a circle at the lower part of the vertical buried bucket cover 303. A limiting plate 305 is fixedly arranged at the lower end of the limiting rod 304. A water pipe hole is opened at the center of the upper part of the vertical buried bucket cover 303. 306, a plurality of the limit rod sleeves 307 are fixedly arranged at equal intervals around the interior of the vertical buried barrel 10 and correspond to the position of the limit rod 304, the limit rod 304 is installed inside the limit rod sleeve 307 and is slidably connected thereto, an upper limit disc groove 308 is opened on one side of the lower portion of the limit rod sleeve 307, a connecting plate 309 is fixedly arranged on one side of the lower portion of the limit rod sleeve 307, a lower limit disc groove plate 3010 is fixedly arranged on the lower portion of the connecting plate 309, and a lower limit disc groove 3011 is fixedly opened on the upper portion of the lower limit disc groove plate 3010.

[0024] In this embodiment, the limiting rod 304 provided at the bottom of the vertical buried barrel cover 303 is installed inside the limiting rod sleeve 307, and the limiting plate 305 cooperates with the upper limiting plate groove 308 to limit the limiting rod 304 to prevent it from sliding in the limiting rod sleeve 307, thereby ensuring that the device remains stable during the hoisting process. When the device is hoisted into the bottom of the well, the limiting rod 304 is controlled to cooperate with the lower limiting plate groove 3011, and the limiting rod 304 can be further pushed by the hoisting mechanism 40 to further push the vertical buried barrel 10 connected to the limiting rod sleeve 307 to be further pushed to the bottom of the well for fixation, and further The lifting mechanism 40 drives the vertical buried barrel cover 303 to rise to a certain extent, thereby driving each of the limit rods 304 and the limit plate 305 to break away from the limit of the lower limit plate groove 3011, and further drives the vertical buried barrel cover 303 to rotate, drives the limit rod 304 to rotate in the limit rod sleeve 307 to break away from the restriction of the lower limit plate groove plate 3010, and then can be lowered, and further drives the vertical buried barrel cover 303 to descend through the lifting mechanism 40, drives the support rod 302 to drive the rotating ring 301 to descend, and then drives the lifting tube 501 to descend, further pushing the telescopic mechanism 60 to extend the heat exchange operation.

[0025] Specific reference Figure 4-7 , 14-17, 21, the lifting mechanism 40 includes a lifting rod groove 401 and a lifting rod 404, a plurality of the lifting rod grooves 401 are fixedly arranged at equal distances on the upper part of the vertical buried barrel cover 303, a lifting rod limiting plate 402 is fixedly arranged on one side of the upper part of the lifting rod groove 401, a lifting rod limiting groove 403 is opened at the lower part of the lifting rod limiting plate 402, a lifting rod limiting column 405 is arranged at the bottom of the lifting rod 404, the lifting rod limiting column 405 is installed in the lifting rod groove 401 and is slidably connected thereto, an oblique connecting rod 406 is fixedly arranged on the upper part of the lifting rod 404, and a lifting column 407 is connected to the upper end of each of the oblique connecting rods 406.

[0026] In this embodiment, the lifting rod 404 can enter due to the shape of the lifting rod limit plate 402, and the lifting rod limit groove 403 is opened at the bottom of the lifting rod limit plate 402 to cooperate with the lifting rod limit column 405 to limit the lifting rod 404 in the lifting rod groove 401, and further through the lifting equipment and the lifting column 407, it drives each of the oblique connecting rods 406 and the lifting rod 404 to lift the vertical buried bucket cover 303 and thus drive the entire device into the well, and further through the lifting equipment, the lifting column 407 can be driven to rotate to control the vertical buried bucket cover 303 and other structures to rotate and push, thereby driving the telescopic mechanism 60 to extend and heat exchange operations, and further through the reverse rotation, the lifting rod 404 and the lifting rod limit column 405 can be rotated out of the lifting rod groove 401 to separate the lifting rod 404 from the vertical buried bucket cover 303 and complete the lifting work.

[0027] In the explanation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other possible installation methods.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical buried geothermal heat exchange device, comprising a vertical buried barrel (10), a heat exchange mechanism (20), a lifting mechanism (30), and a hoisting mechanism (40), characterized in that: The vertical buried barrel (10) is provided with a heat exchange mechanism (20) inside, the heat exchange mechanism (20) is provided with the lifting mechanism (30) on the top, and the lifting mechanism (40) is provided on the top of the lifting mechanism (30), wherein the heat exchange mechanism (20) comprises: The heat exchange mechanism (20) comprises a heat exchange pipe (50), and the heat exchange pipe (50) is installed inside the lifting mechanism (30); A telescopic mechanism (60) is arranged around the heat exchange pipe (50) to be in communication with the heat exchange pipe (50) and penetrates the vertical buried barrel (10) to be slidably connected with the vertical buried barrel (10).

2. A vertical buried geothermal heat exchange device according to claim 1, characterized in that: A plurality of telescopic holes (101) are arranged at equal intervals in a circle around the vertical buried barrel (10), a plurality of telescopic tubes (102) are arranged inside the vertical buried barrel (10) and communicate with the telescopic holes (101), and a heat-resistant sealing rubber layer (103) is provided on the inner surface of the telescopic tubes (102).

3. A vertically buried geothermal heat exchange device according to claim 2, characterized in that: The heat exchange pipe (50) comprises: A lifting pipe (501), the lifting pipe (501) being arranged inside the vertically buried barrel (10), a water inlet pipe (502) being arranged on one side of the upper part of the lifting pipe (501), and a water outlet pipe (503) being arranged on one side, the water inlet pipe (502) and the water outlet pipe (503) being arranged at the lower part thereof with a connecting block (504) being connected thereto, a plurality of water inlet water diverting pipes (505) being arranged on one side of the lower part of the connecting block (504) being connected thereto with the water inlet pipe (502), a water outlet water diverting pipe (506) being arranged on the other side of the lower part of the connecting block (504) being connected thereto with the water outlet pipe (503), the water inlet water diverting pipe (505) and the water outlet water diverting pipe (506) being arranged together in the lifting pipe (501), a limiting ring (507) being fixedly arranged on the outer periphery of the upper part of the lifting pipe (501), the limiting rings (507) being arranged in two sets in parallel; A lifting tube rotating shaft seat (508), the lifting tube rotating shaft seats (508) are arranged around the lifting tube (501) at equal distances in a circle, through holes (509) are opened at corresponding positions of the lifting tube (501) and the lifting tube rotating shaft seat (508), and each of the through holes (509) is provided with one of the water inlet and outlet water distribution pipes (505) and one of the water outlet and distribution pipes (506) passing through the inside; A heat-conducting gel (5010) is filled into a gap between the water inlet water distribution pipe (505) and the water outlet water distribution pipe (506) inside the lifting pipe (501).

4. A vertically buried geothermal heat exchange device according to claim 3, characterized in that: The telescopic mechanism (60) comprises: A sliding telescopic column (601), the sliding telescopic column (601) being arranged in the telescopic tube (102) and being slidably connected thereto, a rotating shaft seat support (602) being fixedly provided on the upper portion of the sliding telescopic column (601), and a sliding telescopic column rotating shaft seat (603) being fixedly provided on the upper portion of the rotating shaft seat support (602); A spiral heat exchange tube (604), the spiral heat exchange tube (604) being arranged to penetrate the interior of the sliding telescopic column (601), and the upper end of the spiral heat exchange tube (604) being passed through the rotating shaft support seat (602) and fixedly connected thereto; A heat exchange return pipe (605), the heat exchange return pipe (605) is arranged to penetrate the interior of the sliding telescopic column (601), and the bottom end of the heat exchange return pipe (605) is connected to the bottom end of the spiral heat exchange pipe (604); A rotating shaft rod (606), the upper portion of the rotating shaft rod (606) is arranged inside the lifting tube rotating shaft seat (508) and is rotatably connected thereto, the lower portion of the rotating shaft rod (606) is installed inside the sliding telescopic column rotating shaft seat (603) and is rotatably connected thereto, a water outlet connecting pipe hole (607) is provided through the rotating shaft rod (606), and a plurality of water inlet connecting pipe clamps (608) are fixedly provided at equal intervals on one side of the rotating shaft rod (606); a water outlet connecting pipe (609), the water outlet connecting pipe (609) being arranged in the water outlet connecting pipe hole (607) and being slidably connected thereto, the upper end of the water outlet connecting pipe (609) being connected to the corresponding water outlet water distribution pipe (506), and the lower end of the water outlet connecting pipe (609) being connected to the heat exchange return pipe (606); A water inlet connecting pipe (6010), wherein the water inlet connecting pipe (6010) is arranged inside each of the water inlet connecting pipe clamps (608) and is slidably connected thereto, wherein the upper end of the water inlet connecting pipe (6010) is connected to the corresponding water inlet water distribution pipe (505), and the lower end of the water inlet connecting pipe (6010) is connected to the spiral heat exchange tube (604).

5. A vertically buried geothermal heat exchange device according to claim 4, characterized in that: The lifting mechanism (30) comprises: A rotating ring (301), the rotating ring (301) being sleeved on the outer circumference of the lifting tube (501) and being rotatably connected thereto and installed between the limiting rings (507), supporting rods (302) being fixedly provided around the rotating ring (301), the outer ends of the supporting rods (302) being fixedly provided with vertical buried barrel covers (303), a plurality of limiting rods (304) being fixedly provided at equal intervals on the circumference of the lower part of the vertical buried barrel covers (303), limiting plates (305) being fixedly provided at the lower ends of the limiting rods (304), and a water pipe hole (306) being provided at the center of the upper part of the vertical buried barrel covers (303); A limiting rod sleeve (307), wherein a plurality of the limiting rod sleeves (307) are fixedly arranged at equal intervals around the interior of the vertical buried barrel (10) in a circumferential manner and correspond to the positions of the limiting rods (304); the limiting rods (304) are installed inside the limiting rod sleeves (307) and are slidably connected thereto; an upper limiting disc groove (308) is provided on one side of the lower portion of the limiting rod sleeve (307); a connecting plate (309) is fixedly provided on one side of the lower portion of the limiting rod sleeve (307); a lower limiting disc groove plate (3010) is fixedly provided on the lower portion of the connecting plate (309); and a lower limiting disc groove (3011) is fixedly provided on the upper portion of the lower limiting disc groove plate (3010).

6. A vertically buried geothermal heat exchange device according to claim 5, characterized in that: The hoisting mechanism (40) comprises: A lifting rod groove (401), wherein a plurality of the lifting rod grooves (401) are fixedly arranged at equal distances in a circle on the upper part of the vertical buried barrel cover (303), a lifting rod limiting plate (402) is fixedly arranged on one side of the upper part of the lifting rod groove (401), and a lifting rod limiting groove (403) is formed at the lower part of the lifting rod limiting plate (402); A hoisting rod (404), wherein a hoisting rod limiting column (405) is provided at the bottom of the hoisting rod (404), wherein the hoisting rod limiting column (405) is installed in the hoisting rod slot (401) and is slidably connected thereto, and an oblique connecting rod (406) is fixedly provided on the upper part of the hoisting rod (404), and a hoisting column (407) is connected to the upper end of each oblique connecting rod (406).

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