Middle-deep layer geothermal gradient coupling efficient heat exchanger

Abstract

The invention relates to the technical field of medium-deep layer geothermal resource development, and discloses a medium-deep layer geothermal gradient coupling efficient heat exchanger which comprises a heat exchanger body, a mounting ring is fixedly mounted on the outer side of the heat exchanger body, and a movable ring attached to the bottom of the mounting ring is movably mounted on the outer side of the heat exchanger body. A limiting frame is fixedly mounted on the outer side of the mounting ring, a fixing mechanism penetrating through the limiting frame is arranged on the inner side of the movable ring, a limiting mechanism which extends to the outer side of the mounting ring and is attached to the fixing mechanism is arranged on the inner side of the mounting ring, and a stabilizing mechanism attached to the heat exchanger body is arranged on the outer side of the movable ring. According to the medium-deep layer geothermal gradient coupling efficient heat exchanger, by arranging the movable ring, the limiting frame, the fixing mechanism and the limiting mechanism, the purpose that a stable structure is convenient to install is achieved, and by arranging the stable structure and the gear mechanism, the purpose that the stability of the heat exchanger is guaranteed is achieved.

Description

Technical Field

[0001] This invention relates to the field of medium-deep geothermal resource development technology, specifically to a medium-deep geothermal gradient coupling high-efficiency heat exchanger. Background Technology

[0002] A search revealed Chinese Patent Publication No. CN219913523U, which discloses a medium-deep geothermal well heat exchanger, including an outer heat exchange tube, an inner heat exchange tube, a connecting tube, and a heat insulation sleeve. This utility model has the advantages of low heat loss and high heat exchange efficiency. The existing technical solutions mentioned above have the following defects: When the geothermal heat exchanger is buried underground for a long time during use, the soil at the installation location may be affected by rainwater and other substances. Without a corresponding stabilizing structure, the soil becomes loose and soft, causing the heat exchanger to tilt and shift, which affects the stability of the heat exchanger during normal use. Furthermore, it is not convenient to install the stabilizing structure on the outside of the heat exchanger. During installation, fixing with bolts requires the use of other tools, which can easily lead to the loss of bolts, thus affecting the installation of the stabilizing structure. Therefore, a medium-deep geothermal gradient coupling high-efficiency heat exchanger is proposed to solve the above-mentioned problems. Summary of the Invention

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a high-efficiency heat exchanger with medium-deep geothermal gradient coupling, which has the advantages of having a stable structure to ensure the stability of the heat exchanger and the stable structure being easy to install, thus solving the problems mentioned in the background art.

[0004] (II) Technical Solution To achieve the aforementioned goal of ensuring heat exchanger stability through a stable structure and facilitating installation, this invention provides the following technical solution: a medium-deep geothermal gradient coupling high-efficiency heat exchanger, comprising a heat exchanger body, an installation ring fixedly installed on the outer side of the heat exchanger body, a movable ring movably installed on the outer side of the heat exchanger body and fitting against the bottom of the installation ring, a limiting frame fixedly installed on the outer side of the installation ring, a fixing mechanism penetrating the limiting frame provided on the inner side of the movable ring, a limiting mechanism extending to its outer side and fitting against the fixing mechanism provided on the inner side of the installation ring, a stabilizing mechanism fitting against the heat exchanger body provided on the outer side of the movable ring, a frame mechanism provided on the inner side of the stabilizing mechanism, and a stop mechanism fitting against the frame mechanism on the stabilizing mechanism; The fixing mechanism includes a mounting cavity. The movable ring has a mounting cavity inside. There are four mounting cavities, which are distributed in a ring at equal intervals. A rectangular frame is fixedly installed inside the mounting cavity. A wedge plate that is in contact with the inner wall of the mounting cavity is slidably installed on the outer side of the rectangular frame. One end of the wedge plate passes through and extends to the top of the limiting frame. A telescopic spring that is fixedly connected to the inner wall of the rectangular frame is fixedly installed on one side of the wedge plate.

[0005] Preferably, the limiting mechanism includes a mounting groove, the top of the mounting ring is provided with a mounting groove, a right-angled block extending to the top of the mounting ring is movably mounted on the inner side of the mounting groove, and a limiting plate extending to the inner side of the limiting frame and fitting with the wedge plate is fixedly mounted on one side of the right-angled block.

[0006] Preferably, the stabilizing mechanism includes a support base, and a support base is fixedly installed on the outer side of the movable ring. There are four support bases, which are distributed in a ring at equal intervals. A swing plate extending to the outer side of the inner side of the support base is rotatably connected. A fixed ring that fits against the outer side of the heat exchanger body is rotatably connected to one bottom end of the swing plate. A barb is fixedly installed on one side of the swing plate. A horizontal plate is fixedly installed on one top end of the swing plate. An anti-slip strip is fixedly installed on the top of the horizontal plate.

[0007] Preferably, the frame mechanism includes support blocks, and the support blocks are fixedly installed on the side of the swing plate near the heat exchanger body, and a support frame is movably installed between the inner sides of the four support blocks.

[0008] Preferably, the stop mechanism includes a support rod, a support rod fixedly installed on one side of the swing plate above the support block, a wedge block slidably installed on the outer side of the support rod and fitting against the support block and the top of the support frame, and a return spring fixedly connected to the support rod is fixedly installed on the inner wall of the wedge block.

[0009] Preferably, the top of the support block is provided with a rectangular groove, the size of which is adapted to the support frame, and one side of the wedge block is provided with a sliding groove adapted to the support rod. The side of the wedge block near the heat exchanger body is designed to be inclined.

[0010] Preferably, a rotating seat is fixedly installed on the outer side of the fixed ring, and the swing plate is rotatably connected to the fixed ring through the rotating seat. The number of barbs on a single swing plate is seven.

[0011] Preferably, the limiting frame is U-shaped, the side of the wedge plate away from the heat exchanger body is inclined, the protruding side of the wedge plate fits against the top of the limiting frame, and the top of the movable ring is provided with a rectangular hole that communicates with the top wall of the mounting cavity. The size of the rectangular hole is adapted to the moving trajectory of the wedge plate.

[0012] Preferably, the wedge plate has a limiting hole inside that matches the rectangular frame, and the number of extension springs inside a single rectangular frame is two.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a high-efficiency heat exchanger with medium-deep geothermal gradient coupling, which has the following advantages: 1. This medium-deep geothermal gradient coupling high-efficiency heat exchanger, through the setting of a movable ring, a limiting frame, a fixing mechanism, and a limiting mechanism, allows for the following steps during the installation of the stabilizing mechanism: First, the movable ring slides upward from the bottom of the heat exchanger body. When the wedge plate contacts the limiting frame, it is compressed. The wedge plate moves under the support of the rectangular frame and stretches the telescopic spring until the wedge plate extends above the limiting frame. Then, the elastic force of the telescopic spring resets the wedge plate and holds it in a certain position. Subsequently, the right-angle block can be installed in the mounting groove. When the right-angle block moves in the mounting groove, it drives the limiting plate to move. The limiting plate can limit the wedge plate, further restricting its position, thereby achieving relative fixation between the movable ring and the mounting ring, completing the installation of the stabilizing mechanism, and realizing the purpose of facilitating the installation of the stable structure.

[0014] 2. This medium-deep geothermal gradient coupling high-efficiency heat exchanger, through a stabilizing mechanism, a frame mechanism, and a stop mechanism, allows the swing plate to rotate after the movable ring moves to the appropriate position relative to the mounting ring, making the fixed ring fit against the outer side of the heat exchanger body. Simultaneously, the barbs on one side of the swing plate increase friction with the soil, further enhancing stability. The anti-slip strips on the horizontal plate provide a better grip during operation, facilitating the rotation of the swing plate. The rectangular groove at the top of the support block is sized to match the support frame, allowing for initial positioning of the support frame. After adjusting the position of the stabilizing mechanism, the support frame is placed into the rectangular groove of the support block. During placement, the wedge block is squeezed and moves under the support of the support rod, compressing the return spring. After the support frame is placed, the wedge block returns to its original position under the action of the return spring and fits against the top of the support frame, acting as a barrier to prevent the support frame from sliding out of the support block, thus ensuring the stability of the stabilizing mechanism. After the stabilizing mechanism is installed, the soil at the burial location is backfilled, ensuring the stability of the heat exchanger body during use and achieving the goal of ensuring the stability of the heat exchanger through a stabilizing structure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the structure of the present invention; Figure 2 This is a partial three-dimensional view of the structure of the present invention; Figure 3 This is an exploded view of a partial structure of the present invention; Figure 4 This is an exploded cross-sectional view of a portion of the structure of the present invention; Figure 5 This is a perspective cross-sectional view of a portion of the structure of the present invention; Figure 6 This is a perspective cross-sectional view of a portion of the structure of the present invention; Figure 7 This is a perspective cross-sectional view of a portion of the structure of the present invention; Figure 8 This is a three-dimensional cross-sectional view of a portion of the structure of the present invention.

[0016] In the diagram: 1 Heat exchanger body, 2 Mounting ring, 3 Movable ring, 4 Limiting frame, 5 Fixing mechanism, 51 Mounting cavity, 52 Rectangular frame, 53 Wedge plate, 54 Telescopic spring, 6 Limiting mechanism, 61 Mounting groove, 62 Right angle block, 63 Limiting plate, 7 Stabilizing mechanism, 71 Support base, 72 Swing plate, 73 Fixing ring, 74 Barb, 75 Horizontal plate, 76 Anti-slip strip, 8 Frame mechanism, 81 Support block, 82 Support frame, 9 Gear mechanism, 91 Support rod, 92 Wedge block, 93 Return spring. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-8 This invention provides a technical solution: a high-efficiency heat exchanger with medium-deep geothermal gradient coupling, comprising a heat exchanger body 1, which, as the core component, is the main site for geothermal heat energy collection and conversion, realizing heat transfer and exchange, and completing the function of high-efficiency heat exchange with geothermal gradient coupling. An mounting ring 2 is fixedly installed on the outer side of the heat exchanger body 1, and a movable ring 3, which fits against the bottom of the mounting ring 2, is movably installed on the outer side of the heat exchanger body 1. The mounting ring 2 provides the mounting foundation and positioning reference for the movable ring 3, and its fit with the movable ring 3 assists in the installation and positioning of the movable ring 3. The movable ring 3 can move along the heat exchanger body 1, facilitating the installation and functional implementation of other mechanisms. A carrier is provided, with a limiting frame 4 fixedly installed on the outer side of the mounting ring 2. A fixing mechanism 5 penetrating the limiting frame 4 is provided on the inner side of the movable ring 3. The limiting frame 4 provides a moving channel and limiting space for the wedge plate 53 in the fixing mechanism 5. It cooperates with the wedge plate 53 to limit the movement range of the movable ring 3 and ensure that the movable ring 3 is fixed in a suitable position. A limiting mechanism 6 extending to its outer side and fitting with the fixing mechanism 5 is provided on the inner side of the mounting ring 2. A stabilizing mechanism 7 fitting with the heat exchanger body 1 is provided on the outer side of the movable ring 3. A frame mechanism 8 is provided on the inner side of the stabilizing mechanism 7. A stop mechanism 9 fitting with the frame mechanism 8 is provided on the stabilizing mechanism 7.

[0019] The fixing mechanism 5 includes a mounting cavity 51. The movable ring 3 has four mounting cavities 51 arranged in a ring at equal intervals. A rectangular frame 52 is fixedly installed inside the mounting cavity 51. The rectangular frame 52 provides mounting support for the wedge plate 53 and the telescopic spring 54, ensuring the stable operation of the wedge plate 53 and the telescopic spring 54. The wedge plate 53 is slidably installed on the outer side of the rectangular frame 52 and fits against the inner wall of the mounting cavity 51. One end of the wedge plate 53 passes through and extends to the top of the limiting frame 4. A telescopic spring 54 is fixedly installed on one side of the wedge plate 53 and is fixedly connected to the inner wall of the rectangular frame 52. The elastic coefficient of the telescopic spring 54 can be set according to requirements.

[0020] The limiting frame 4 has a U-shaped design. The wedge plate 53 is inclined on the side away from the heat exchanger body 1. The protruding side of the wedge plate 53 fits against the top of the limiting frame 4. The top of the movable ring 3 has a rectangular hole that communicates with the inner top wall of the mounting cavity 51. The size of the rectangular hole is adapted to the moving trajectory of the wedge plate 53. The inside of the wedge plate 53 has a limiting hole that matches the rectangular frame 52. There are two telescopic springs 54 inside a single rectangular frame 52.

[0021] The limiting mechanism 6 includes a mounting groove 61. The mounting groove 61 is provided on the top of the mounting ring 2. A right-angle block 62 extending to the top of the mounting ring 2 is movably installed on the inner side of the mounting groove 61. A limiting plate 63 extending to the inner side of the limiting frame 4 and fitting with the wedge plate 53 is fixedly installed on one side of the right-angle block 62. The limiting plate 63 directly limits the wedge plate 53 to prevent the movable ring 3 from moving arbitrarily.

[0022] The stabilizing mechanism 7 includes a support base 71. The support base 71 is fixedly installed on the outer side of the movable ring 3, providing rotational support for the swing plate 72, allowing the swing plate 72 to rotate around it, thus realizing the installation and positioning of the swing plate 72. There are four support bases 71, which are distributed in a ring at equal intervals. The swing plate 72 is rotatably connected to the inner side of the support base 71 and extends to its outer side. The bottom end of the swing plate 72 is rotatably connected to a fixing ring 73 that fits against the outer side of the heat exchanger body 1. By rotating, the fixing ring 73 fits tightly against the outer side of the heat exchanger body 1, enhancing the stability of the heat exchanger body 1. A barb 74 is fixedly installed on one side of the swing plate 72 to increase the friction between the swing plate 72 and the surrounding environment, preventing the swing plate 72 from loosening after rotation and ensuring the stability of the swing plate 72. A horizontal plate 75 is fixedly installed on the top end of the swing plate 72, and an anti-slip strip 76 is fixedly installed on the top of the horizontal plate 75 to increase the friction between the operator's hand and the horizontal plate 75, allowing the operator to better exert force to rotate the swing plate 72.

[0023] A rotating seat is fixedly installed on the outside of the fixed ring 73, and the swing plate 72 is rotatably connected to the fixed ring 73 through the rotating seat. The number of barbs 74 on a single swing plate 72 is seven.

[0024] The frame mechanism 8 includes support blocks 81. The support blocks 81 are fixedly installed on the side of the swing plate 72 near the heat exchanger body 1. A support frame 82 is movably installed between the inner sides of the four support blocks 81. The support frame 82 is used to ensure the stability of the swing plate 72 and prevent it from rotating.

[0025] The stop mechanism 9 includes a support rod 91. The support rod 91 is fixedly installed on one side of the swing plate 72, located above the support block 81. A wedge block 92 is slidably installed on the outer side of the support rod 91, which fits against the top of the support block 81 and the support frame 82. A return spring 93 is fixedly installed on the inner wall of the wedge block 92 and is fixedly connected to the support rod 91. The elastic coefficient of the return spring 93 can be set according to the requirements. Under the action of the return spring 93, the support frame 82 is automatically blocked to prevent the support frame 82 from sliding out of the rectangular groove of the support block 81. The side near the heat exchanger body 1 is designed with an inclination to facilitate the placement of the support frame 82 into the rectangular groove.

[0026] The top of the support block 81 is provided with a rectangular groove, the size of which is adapted to the support frame 82. One side of the wedge block 92 is provided with a sliding groove adapted to the support rod 91. The side of the wedge block 92 closest to the heat exchanger body 1 is designed to be inclined.

[0027] In use, first, place the movable ring 3 on the outside of the heat exchanger body 1, making it fit against the bottom of the mounting ring 2. At this time, one end of the wedge plate 53 in the fixing mechanism 5 extends to the top of the limiting frame 4. Then, adjust the position of the movable ring 3 as needed. By moving the right-angle block 62 in the limiting mechanism 6, the limiting plate 63 moves inside the limiting frame 4, releasing the limitation on the wedge plate 53, thus allowing the movable ring 3 to move. When the movable ring 3 moves to the appropriate position, move the right-angle block 62 again, so that the limiting plate 63 again limits the wedge plate 53, fixing the position of the movable ring 3. Rotate the swing plate 72 in the stabilizing mechanism 7, so that the fixing ring 73 at the bottom end of the swing plate 72 is aligned with the outside of the heat exchanger body 1. The barbs 74 fit tightly together, increasing friction with the surrounding environment during rotation and ensuring the stability of the swing plate 72. Simultaneously, the operator can grip the horizontal plate 75 and use the anti-slip strips 76 to better rotate the swing plate 72, placing the support frame 82 into the rectangular groove of the support block 81 in the frame mechanism 8. The wedge block 92 in the stop mechanism 9 automatically blocks the support frame 82 under the action of the return spring 93, preventing it from slipping out. If the support frame 82 needs to be removed, simply overcome the elasticity of the return spring 93 and move the wedge block 92 away from the support frame 82 to remove it. The entire structure can then be buried in the soil for heat energy collection and conversion.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] In summary, this medium-deep geothermal gradient coupling high-efficiency heat exchanger, through the arrangement of a movable ring 3, a limiting frame 4, a fixing mechanism 5, and a limiting mechanism 6, allows for efficient installation of the stabilizing mechanism 7. First, the movable ring 3 slides upwards from the bottom of the heat exchanger body. When the wedge plate 53 contacts the limiting frame 4, it is compressed. Supported by the rectangular frame 52, the wedge plate 53 moves and stretches the telescopic spring 54 until it extends above the limiting frame 4. The elastic force of the telescopic spring 54 then resets the wedge plate 53 and holds it in a certain position. Subsequently, the right-angle block 62 can be installed in the mounting groove 61. As the right-angle block 62 moves within the mounting groove 61, it drives the limiting plate 6... 3. The limiting plate 63 can limit the wedge plate 53, further restricting its position, thereby achieving relative fixation between the movable ring 3 and the mounting ring 2, completing the installation of the stabilizing mechanism 7, and realizing the purpose of stabilizing the structure for easy installation. Through the stabilizing mechanism 7, the frame mechanism 8, and the stop mechanism 9, when the movable ring 3 moves to the appropriate position relative to the mounting ring 2, the swing plate 72 is rotated to make the fixed ring 73 fit against the outer side of the heat exchanger body 1. At the same time, the barbs 74 on one side of the swing plate 72 can increase the friction between the swing plate and the soil, further enhancing stability. The anti-slip strips 76 on the horizontal plate 75 can provide a better grip during operation and facilitate the rotation of the swing plate. 72. The rectangular groove at the top of the support block 81 is sized to match the support frame 82, allowing for initial positioning of the support frame 82. After adjusting the position of the stabilizing mechanism 7, the support frame 82 is placed into the rectangular groove of the support block 81. During placement, the wedge block 92 is compressed and moves under the support of the support rod 91, compressing the return spring 93. After the support frame 82 is placed, the wedge block 92 returns to its original position under the action of the return spring 93 and fits against the top of the support frame 82, acting as a barrier to prevent the support frame 82 from sliding out of the support block 81, thus ensuring the stability of the stabilizing mechanism 7. After the installation of the stabilizing mechanism 7 is completed... Backfilling the soil at the burial site ensures the stability of the heat exchanger body 1 during use. This achieves the goal of providing a stable structure to guarantee the stability of the heat exchanger. It also solves the problem that when geothermal heat exchangers are buried underground for a long time, the soil at the installation site may be affected by rainwater and other substances. Without a corresponding stabilizing structure, the soil may become loose and soft, causing the heat exchanger to tilt and shift, which would affect the stability of the heat exchanger during normal use. Furthermore, it is not convenient to install the stabilizing structure on the outside of the heat exchanger. During installation, fixing with bolts requires the use of other tools, which can easily lead to the loss of bolts, thus affecting the installation of the stabilizing structure.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling, comprising a heat exchanger body (1), wherein an mounting ring (2) is fixedly installed on the outer side of the heat exchanger body (1), characterized in that: The heat exchanger body (1) is movably mounted with a movable ring (3) that fits against the bottom of the mounting ring (2) on the outside. A limiting frame (4) is fixedly mounted on the outside of the mounting ring (2). A fixing mechanism (5) that penetrates the limiting frame (4) is provided on the inside of the movable ring (3). A limiting mechanism (6) that extends to the outside of the mounting ring (2) and fits against the fixing mechanism (5) is provided on the inside of the mounting ring (2). A stabilizing mechanism (7) that fits against the heat exchanger body (1) is provided on the outside of the movable ring (3). A frame mechanism (8) is provided on the inside of the stabilizing mechanism (7). A stop mechanism (9) that fits against the frame mechanism (8) is provided on the stabilizing mechanism (7). The fixing mechanism (5) includes a mounting cavity (51). The movable ring (3) has a mounting cavity (51) inside. There are four mounting cavities (51) and they are distributed in a ring at equal distances. A rectangular frame (52) is fixedly installed inside the mounting cavity (51). A wedge plate (53) that fits against the inner wall of the mounting cavity (51) is slidably installed on the outer side of the rectangular frame (52). One end of the wedge plate (53) passes through and extends to the top of the limiting frame (4). A telescopic spring (54) that is fixedly connected to the inner wall of the rectangular frame (52) is fixedly installed on one side of the wedge plate (53).

2. The high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 1, characterized in that: The limiting mechanism (6) includes a mounting groove (61). The mounting ring (2) has a mounting groove (61) on its top. A right-angle block (62) extending to the top of the mounting ring (2) is movably mounted on the inner side of the mounting groove (61). A limiting plate (63) extending to the inner side of the limiting frame (4) and fitting with the wedge plate (53) is fixedly mounted on one side of the right-angle block (62).

3. The high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 1, characterized in that: The stabilizing mechanism (7) includes a support base (71). The support base (71) is fixedly installed on the outer side of the movable ring (3). There are four support bases (71) and they are distributed in a ring at equal distances. The inner side of the support base (71) is rotatably connected to a swing plate (72) extending to its outer side. The bottom end of the swing plate (72) is rotatably connected to a fixing ring (73) that fits against the outer side of the heat exchanger body (1). A barb (74) is fixedly installed on one side of the swing plate (72). A horizontal plate (75) is fixedly installed on the top end of the swing plate (72). An anti-slip strip (76) is fixedly installed on the top of the horizontal plate (75).

4. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 3, characterized in that: The frame mechanism (8) includes support blocks (81), and the swing plate (72) is fixedly installed with support blocks (81) on one side near the heat exchanger body (1). A support frame (82) is movably installed between the inner sides of the four support blocks (81).

5. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 4, characterized in that: The gear mechanism (9) includes a support rod (91). The support rod (91) is fixedly installed on one side of the swing plate (72) above the support block (81). A wedge block (92) that fits against the top of the support block (81) and the support frame (82) is slidably installed on the outside of the support rod (91). A return spring (93) that is fixedly connected to the support rod (91) is fixedly installed on the inner wall of the wedge block (92).

6. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 5, characterized in that: The top of the support block (81) is provided with a rectangular groove, the size of which is adapted to the support frame (82). The side of the wedge block (92) is provided with a sliding groove adapted to the support rod (91). The side of the wedge block (92) near the heat exchanger body (1) is designed to be inclined.

7. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 3, characterized in that: A rotating seat is fixedly installed on the outside of the fixed ring (73), and the swing plate (72) is rotatably connected to the fixed ring (73) through the rotating seat. The number of barbs (74) on a single swing plate (72) is seven.

8. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 1, characterized in that: The limiting frame (4) is U-shaped, and the wedge plate (53) is inclined on the side away from the heat exchanger body (1). The protruding side of the wedge plate (53) fits against the top of the limiting frame (4). The top of the movable ring (3) is provided with a rectangular hole that communicates with the top wall of the mounting cavity (51). The size of the rectangular hole is adapted to the moving trajectory of the wedge plate (53).

9. A high-efficiency heat exchanger with medium-deep geothermal gradient coupling according to claim 1, characterized in that: The wedge plate (53) has a limiting hole inside that matches the rectangular frame (52), and the number of extension springs (54) inside a single rectangular frame (52) is two.

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