Reversible dismountable underground high pressure energy storage pipeline seal joint

Abstract

The present application relates to the technical field of pipe joint, and discloses a reversible detachable underground high-pressure energy storage pipeline sealing joint, which comprises a pipe sleeve, a first spring, a limiting head, a positioning cylinder, a lifting column, a clamping head, a sliding frame, a second spring, a Z-shaped guide rail, a guide block, a left rack, a right rack, a front gear and a spring pressing switch. The pipeline joint is not only convenient and fast to connect with the pipeline, but also can be quickly detached, so that the pipeline can be adjusted, replaced or overhauled. When in use, only one end of the pipeline is inserted into the pipeline joint, the limiting head is extruded by the annular limiting block on the outer sidewall of the pipeline and moves upward until the limiting head slides off the upper surface of the annular limiting block and instantaneously moves downward to reset, so that the limiting head is clamped in the bidirectional self-locking limiting mechanism formed between the limiting head and the clamping head, and the quick connection between the pipelines is realized. When the pipelines need to be separated, only the spring pressing switch needs to be pressed to realize the quick separation of the pipelines.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting technology, and in particular to a reversible detachable underground high-pressure energy storage pipeline sealing joint. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] In high-pressure gas energy storage systems, the energy storage medium typically needs to be transported, stored, and circulated under high pressure conditions. As a crucial component of the medium transmission and pressure bearing capacity in high-pressure energy storage systems, the sealing performance, pressure-bearing capacity, and long-term stability of the pipeline's connection structure directly affect the safe operation of the entire energy storage system. Especially in engineering scenarios such as underground energy storage, pipeline energy storage, modular energy storage, and high-pressure gas transmission energy storage, pipeline connections are often weak points in terms of structural stress and sealing failure.

[0004] Currently, commonly used pipeline connection methods in the engineering field include flange connections, welded connections, clamp connections, and socket connections. While welded connections offer high structural integrity, the weld area often becomes a weak point in terms of mechanical strength. Under high pressure, high temperature differences, and cyclic loading, the weld metal is prone to fatigue cracks, creep damage, or the propagation of internal defects, leading to leakage or even failure at the connection. For pipelines transporting gases, weld fatigue is even more pronounced, making it difficult to meet the sealing stability requirements under long-term, high-frequency operating conditions. Furthermore, large-area welding generates a large amount of smoke and slag, which does not comply with green construction and environmental protection requirements. Flange and clamp connections rely on gaskets or rubber rings for sealing. As operating time increases, gasket materials are affected by media corrosion, temperature changes, and compression set, inevitably leading to a decline in their sealing performance. Simultaneously, the relaxation of bolt preload further reduces connection reliability. In large-diameter, high-pressure, or frequently disassembled operating conditions, the disadvantages of flange and clamp connections—large size, heavy weight, complex assembly, and difficult maintenance—become more pronounced. Socket connections are widely used due to their simple structure and quick installation. However, existing socket connections generally use one-time crimping or permanent fixing methods. If adjustments, replacements, or repairs are needed after installation, they can usually only be done through destructive removal, resulting in material waste, high maintenance costs, and extended construction periods.

[0005] With the strong promotion of prefabricated buildings, modular construction, and rapid deployment technologies for pipeline systems, various projects have placed higher demands on pipeline connection methods. Especially in pipeline energy storage or underground high-pressure energy storage systems, energy storage pipelines may be buried in surrounding rock, concrete lining, or other constrained media, limiting space at connection points. Conventional flange structures are relatively large, hindering compact layouts; while relying solely on welding or threaded seals makes it difficult to meet the needs of later maintenance and reassembly. Therefore, designing a pipeline connection structure suitable for high-pressure energy storage conditions, ensuring good safety and reliability under high pressure, circulation, sealing, and long-term service conditions, has become an urgent technical problem to be solved. Traditional connection methods struggle to meet the requirements of reusability and rapid assembly. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a reversible, detachable sealing joint for underground high-pressure energy storage pipelines. This joint not only allows for convenient and quick connection to the pipeline but also enables rapid disassembly, facilitating pipeline adjustment, replacement, or maintenance. Furthermore, the disassembled pipeline joint remains undamaged and can be reused. Specifically, the technical solution of this invention is as follows.

[0007] A reversible, detachable underground high-pressure energy storage pipeline sealing joint includes: a pipe sleeve, a first spring, a limiting head, a positioning cylinder, a lifting column, a clamp, a sliding frame, a second spring, a Z-shaped guide rail, a guide block, a left rack, a right rack, a front gear, and a spring-loaded switch. The first spring is located in an outer groove on the inner wall of the pipe sleeve, with its upper end fixedly connected to the top surface of the outer groove. The trapezoidal limiting head is fixed to the lower end of the first spring and extends out of the outer groove. The positioning cylinder is vertically fixed to the bottom plate of an inner groove adjacent to the outer groove and with their side walls connected. The lifting column is slidably disposed in the positioning cylinder, with its lower end connected to the clamp located below the bottom plate. The sliding frame is disposed in the inner groove, with its side walls slidably fitted together. The upper end of the lifting column is connected to the upper frame of the sliding frame via the second spring. The Z-shaped guide rail is horizontally disposed in the inner groove and passes through the positioning cylinder and the lifting column. The positioning cylinder has an opening, and the Z-shaped guide rail is slidably connected to the lifting column. The sliding frame has guide blocks on its left and right inner walls. The right side wall of the left guide block is an upward-sloping surface that matches the left end of the Z-shaped guide rail, and the left side wall of the right guide block is an upward-sloping surface that matches the right end of the Z-shaped guide rail. The left and right racks are fixed to the right side wall of the limiting head and the left side of the sliding frame, respectively. The front gear is rotatably positioned between the left and right racks and meshes with them. One end of the spring switch slides through the sleeve and connects to the sliding frame.

[0008] Furthermore, the lifting column has an oblique hole that is arranged diagonally downward from left to right, and the Z-shaped guide rail passes through the oblique hole and is slidably connected to it.

[0009] Furthermore, there is a communication port between the outer groove and the inner groove, and the front gear is rotatably disposed in the communication port.

[0010] Furthermore, the outer wall of the pipe used for connection with the pipe joint has an annular limiting block, and the clamp is a horizontally arranged "L"-shaped structure consisting of a horizontal block and a longitudinal block connected to its right end. The annular limiting block can be precisely locked in the space between the limiting head and the longitudinal block.

[0011] Furthermore, the lower end face of the limiting head has an inclined surface that slopes downward from left to right, so that the limiting head can be retracted into the outer groove by the squeezing of the annular limiting block during connection.

[0012] Furthermore, it also includes a sealing ring located in an annular mounting groove on the inner sidewall of the sleeve, and the sealing ring is disposed adjacent to the inner groove.

[0013] Furthermore, the outer wall of the pipe used for connection with the pipe joint has a beveled deformation limiting member so that the sealing ring will deform to a certain extent after the pipe is connected, thereby increasing the sealing performance.

[0014] Furthermore, the aforementioned pipe sealing joint also includes a rear gear, a timing belt, and a transmission rack. Specifically: the rear gear is rotatably mounted in the inner groove and located on the right side of the Z-shaped guide rail; the rear gear is connected to the front gear via the timing belt. The transmission rack is vertically fixed to the side wall of the sliding frame and located above the guide block; the rear gear and the transmission rack mesh.

[0015] Furthermore, the upper end of the spring switch is located in a through hole in the side wall of the sleeve, and a bolt or screw is threaded into the through hole. Its lower end is rotatably connected to the upper end of the spring switch, thereby forming an anti-accidental-touch switch with the spring switch.

[0016] Furthermore, the lower ends of the left and right side frames of the sliding frame are respectively located in two sliding holes on both sides of the base plate, and the lower ends of the left and right side frames are slidably connected to the sliding holes so that the sliding frame is more stable when it moves.

[0017] Compared with the prior art, the present invention has at least the following beneficial technical effects: The pipe joint of this invention not only facilitates quick and easy connection with pipes but also allows for rapid disassembly, making it convenient for pipeline adjustment, replacement, or maintenance. In use, simply insert one end of the pipe into the pipe joint. The limiting head moves upward under the pressure of the annular limiting block on the outer wall of the pipe until it slides past the upper surface of the annular limiting block and then instantly moves downward to reset. This creates a bidirectional self-locking limiting mechanism between the limiting head and the locking head, enabling rapid connection between pipes. When pipe separation is required, simply press the spring switch to drive the sliding frame towards the pipe, which simultaneously drives the limiting head and the locking head to retract, unlocking the bidirectional self-locking limiting mechanism. This allows for rapid separation of the pipe connection, and the disassembled pipe joint is not damaged and can be reused. This effectively overcomes the shortcomings of traditional connection methods such as welding, which struggle to simultaneously meet the requirements of high-reliability sealing, reusability, and rapid assembly. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 The following is a schematic diagram of the reversible detachable pipe joint in the embodiments below.

[0020] Figure 2 The following is a cross-sectional view of a reversible detachable pipe fitting in the embodiments below.

[0021] Figure 3 The following is a schematic diagram of the snap-fit ​​unit structure of the reversible detachable pipe joint in the embodiments below.

[0022] Figure 4 This is a partial sectional view of the snap-fit ​​unit of the reversible detachable pipe fitting in the following embodiments.

[0023] Figure 5 The following is a structural schematic diagram of the reversible detachable pipe joint in use in the following embodiments.

[0024] Figure 6 This is a cross-sectional view of another reversible detachable pipe fitting in the following embodiments.

[0025] The numbers in the above figures represent: 1-pipe sleeve, 2-first spring, 3-limit head, 4-positioning cylinder, 5-lifting column, 6-clamp head, 7-sliding frame, 8-second spring, 9-Z-shaped guide rail, 10-guide block, 11-left rack, 12-right rack, 13-front gear, 14-press spring switch, 15-pipe, 16-annular limit block, 17-sealing ring, 18-deformable limit component, 19-rear gear, 20-synchronous belt, 21-bolt or screw, 101-outer groove, 102-inner groove, 103-connecting port, 104-base plate, 401-opening. Detailed Implementation

[0026] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] For ease of description, the terms "up," "down," "left," and "right" appearing in this invention only indicate that they correspond to the up, down, left, and right directions in the accompanying drawings. They do not limit the structure and are merely for the purpose of describing the invention and simplifying the description. They do not indicate or imply that the device or component referred to needs to have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The technical solution of the invention will now be further described in conjunction with the accompanying drawings.

[0029] refer to Figure 1 An example of a reversible, detachable sealing joint for underground high-pressure energy storage pipelines includes: a pipe sleeve 1 and a snap-fit ​​unit installed in a groove on its inner wall. Specifically, refer to... Figure 2 , Figure 3 and Figure 4The snap-fit ​​unit includes: a first spring 2, a limiting head 3, a positioning cylinder 4, a lifting column 5, a snap-fit ​​head 6, a sliding frame 7, a second spring 8, a Z-shaped guide rail 9, a guide block 10, a left rack 11, a right rack 12, a front gear 13, and a spring-loaded switch 14. In this embodiment, the sleeve 1 is a circular cylinder with an outer groove 101 on the left side of its inner wall. The first spring 2 is vertically positioned in this outer groove 101, and its upper end is inserted into the positioning column on the top surface of the outer groove 101, with the two fixedly connected together. The limiting head 3 is an inverted trapezoidal block with its inclined surface located at the lower left corner; that is, the lower left corner of the lower end face of the limiting head 3 is an inclined surface sloping downwards from left to right. The limiting head 3 is positioned in the lower port of the outer groove 101, and the two side walls of the limiting head 3 are in sliding contact with the outer groove 101. The upper surface of the limiting head 3 is fixedly connected to the lower end of the first spring 2, and the lower end of the limiting head 3 extends out of the outer groove 101.

[0030] An inner groove 102 is adjacent to the right side of the outer groove 101, and the two are connected by a connecting port 103. The positioning cylinder 4 is vertically fixed on the bottom plate 104 of the inner groove 102, and the bottom plate 104 has a through hole corresponding to the lower port of the positioning cylinder 4. The lifting column 5 is disposed in the positioning cylinder 4, and the lower end of the lifting column 5 passes through the bottom plate 104 and connects to the clamp 6 below it. The clamp 6 is a horizontally arranged "L"-shaped structure composed of a horizontal block and a vertical block connected to its right end. The sliding frame 7 is a frame structure with an open lower end, composed of left, right and upper frames connected together. It is vertically disposed in the inner groove 102 and the side walls of the two frames slide against each other. The upper end of the lifting column 5 is connected to the upper frame of the sliding frame 7 via the second spring 8, thereby suspending the lifting column 5 in the positioning cylinder 4. At this time, there is a gap between the clamp head 6 and the lower surface of the base plate 104, and the clamp head 6 extends out of the inner groove 102 so that when it is necessary to remove the pipe joint of this embodiment from the pipe 15, the clamp head 6 can be driven to rise / retract to release the lock on the pipe 15.

[0031] The Z-shaped guide rail 9 is horizontally arranged in the inner groove 102, and the Z-shaped guide rail 9 has an inclined structure with the left end facing upward and the right end facing downward. The positioning cylinder 4 has an opening 401, and the lifting column 5 has an inclined hole that is inclined downward from left to right. The Z-shaped guide rail 9 passes through the opening 401 and the inclined hole, and the Z-shaped guide rail 9 is slidably connected to the inclined hole. The height of the opening 401 is greater than the distance required for the chuck 6 to rise / retract. There are two guide blocks 10, both of which are right-angled triangular blocks. They are fixed on the inner sidewalls of the left and right sides of the sliding frame 7, respectively. The right side wall of the left guide block 10 is an inclined surface from left to right that matches the left end of the Z-shaped guide rail 9, and the left side wall of the right guide block 10 is an inclined surface from left to right that matches the right end of the Z-shaped guide rail 9. This allows the inclined surfaces of the guide blocks 10 to drive the Z-shaped guide rail 9 to slide left and right, thereby causing the lifting column 5 to rise and fall with the clamp 6.

[0032] The left rack 11 and right rack 12 are both vertically arranged and fixed to the right side wall of the limiting head 3 and the outer side wall of the left frame of the sliding frame 7, respectively, and are arranged opposite to each other. The front gear 13 is located in the connecting port 103, and its two ends are rotatably connected to the two side walls of the connecting port 103. The front gear 13 is located between the left rack 11 and the right rack 12, and its two sides mesh with the left rack 11 and the right rack 12, thereby synchronously driving the left rack 11 and the right rack 12 to move up and down in opposite directions. The sleeve 1 has a sliding hole, and the spring switch 14 is a rod. One end of the rod slides through the sliding hole and is fixedly connected to the upper surface of the sliding frame 7, while the other end protrudes outside the sleeve 1, so that the spring switch 14 can be used to release the locking of the pipe joint to the pipe in this embodiment, allowing the pipe in the connected state to separate.

[0033] refer to Figure 5The outer wall of the pipe 15, used for connection with the pipe joint, has an annular limiting block 16. In the pipe joint used to connect two pipes 15, the sleeve 1 is provided with two sets of symmetrical locking mechanisms, each set including at least two locking units evenly distributed around the circumference of the sleeve 1, to connect the two pipes 15 together. During connection, the right end of the left pipe 15 can be inserted into the left end of the sleeve 1. At this time, the annular limiting block 16 presses against the inclined surface of the limiting head 3, causing it to rise / retract into the outer groove 101, and the first spring 2 is compressed. Simultaneously, the left rack 11 rises with the limiting head 3, driving the right rack 12 to descend, causing the sliding frame 7 to move upward. At this time, the guide block 10 on the right side of the sliding frame 7 presses upward against the right inclined surface of the Z-shaped guide rail 9, causing it to move to the left, thereby causing the lifting column 5 and the locking head 6 to descend and extend from the inner groove 102, facilitating the pre-positioning of the locking head 6. As the limiting head 3 slides through the upper surface of the annular limiting block 16, the moment the limiting head 3 slides out of the left end of the annular limiting block 16, the limiting head 3, under the restoring force of the first spring 2, is locked at the left end face of the annular limiting block 16. At this time, the annular limiting block 16 is precisely locked in the space between the limiting head 3 and the longitudinal block of the locking head 6, forming a bidirectional self-locking limiting mechanism, thereby realizing the connection between the pipe joint and one of the pipes 15 on the left. Similarly, the left end of the pipe 15 on the right is inserted into the right end of the pipe joint to complete the above process, thus completing the connection between the two pipes 15, making the two pipes 15 reversibly detachable and connected together.

[0034] When it is necessary to separate the two pipes 15, first press the spring switch 14 to move the sliding frame 7 towards the outer wall of the pipe 15. At this time, the right rack 12 moves synchronously with the sliding frame 7, thereby driving the front gear 13 to rotate. The front gear 13 drives the left rack 11 to move away from the outer wall of the pipe 15, thereby causing the limiting head 3 to retract into the outer groove 101, thus limiting one end of the annular limiting block 16 of the pipe 15. The second spring 8 is compressed, which facilitates the reset of the sliding frame 7 later. Simultaneously, during this process, the guide block 10 on the left side of the sliding frame 7 presses against the left end of the Z-shaped guide rail 9, causing it to move to the right. This drives the lifting column 5 and the clamp 6 to move along the positioning cylinder 4 away from the outer wall of the pipe 15 / retract into the inner groove 102, thereby releasing the clamp 6 from restricting the other end of the annular limiting block 16 and unlocking the bidirectional self-locking limiting mechanism. This allows for the rapid separation of the two connected pipes 15, and the disassembled pipe joint is not damaged and can be reused. This effectively overcomes the problem that traditional connection methods such as welding cannot simultaneously meet the requirements of high-reliability sealing, reusability, and rapid assembly. The pipe joint in this embodiment not only provides convenient and quick connection with the pipe 15 but also allows for rapid disassembly, facilitating pipeline adjustment, replacement, or maintenance.

[0035] In another implementation, refer to Figure 3 The bottom plate 104 of the reversible detachable underground high-pressure energy storage pipeline sealing joint of the above embodiment has two sliding holes, which correspond to the lower ends of the left and right side frames of the sliding frame 7, respectively. The lower ends of the left and right side frames are located in the corresponding sliding holes and are in sliding contact, so that the sliding frame 7 is more stable when sliding, and the clamp 6 can more accurately release the restriction on the annular limiting block 16.

[0036] In another implementation, refer to Figure 2 and Figure 3 The reversible detachable underground high-pressure energy storage pipeline sealing joint of the above embodiment also includes a sealing ring 17, which is located in the annular mounting groove on the inner side wall of the pipe sleeve 1, and the sealing ring 17 is arranged adjacent to the inner groove 102, so that the pipeline 15 maintains good sealing performance after connection. The sealing ring 17 can be made of flexible materials such as rubber. In a further embodiment, the outer side wall of the pipeline 15 has a beveled deformation limiting member 18, so that pressure is applied to the sealing ring 17 after connection, thereby causing the sealing ring 17 to deform to a certain extent, increasing the compressive force between the sealing ring 17 and the pipeline 15, and improving the sealing performance between the pipeline joint and the pipeline 15.

[0037] In another implementation, refer to Figure 3 The reversible detachable underground high-pressure energy storage pipeline sealing joint of the above embodiment further includes: a rear gear 19, a synchronous belt 20, and a transmission rack. The rear gear 19 is disposed in the inner groove 102 and located on the right side of the Z-shaped guide rail 9, and is rotatably connected to the side wall of the inner groove 102. The rear gear 19 is connected to the front gear 13 via the synchronous belt 20. The transmission rack is vertically fixed to the right side wall of the sliding frame 7 and located above the guide block 10. The rear gear 19 and the transmission rack mesh, thereby assisting the movement of the sliding frame 7.

[0038] In another implementation, refer to Figure 6The reversible detachable underground high-pressure energy storage pipeline sealing joint of the above embodiment also includes an anti-accidental activation switch, which includes the spring-loaded switch 14 and a bolt or screw 21. Specifically, the upper end of the spring-loaded switch 14 is located in a through hole in the side wall of the pipe sleeve 1, and the bolt or screw 21 is threaded into this through hole. Its lower end is rotatably connected to the upper end of the spring-loaded switch 14. The cooperation of the spring-loaded switch 14 and the bolt or screw 21 effectively prevents accidental activation of the spring-loaded switch 14, which could lead to the unlocking of the bidirectional self-locking limiting mechanism and cause the pipeline 15 connection failure. This is because, in this embodiment, the spring-loaded switch 14 cannot be directly triggered by pressure from outside the pipeline due to the protection of the bolt or screw 21. It is necessary to first rotate the bolt or screw 21 to press the spring-loaded switch 14, thereby unlocking the bidirectional self-locking limiting mechanism. Meanwhile, since the bolt or screw 21 also serves a positioning function, it avoids the problem that once the pressure on the spring switch 14 is removed, the sliding frame 7 will reset under the action of the second spring 8, causing the bidirectional self-locking limit mechanism to relock, thus further improving the convenience of disassembling the pipe joint.

[0039] Finally, it should be noted that any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention. Although specific embodiments of this invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this invention are still within the scope of protection of this invention.

Claims

1. A reversible, detachable sealing joint for underground high-pressure energy storage pipelines, characterized in that, include: The components include: sleeve, first spring, limit head, positioning cylinder, lifting column, locking head, sliding frame, second spring, Z-shaped guide rail, guide block, left rack, right rack, front gear, and spring-loaded switch; among which: The first spring is located in the outer groove on the inner wall of the sleeve and its upper end is fixedly connected to the top surface of the outer groove; the trapezoidal limiting head is fixed to the lower end of the first spring and extends out of the outer groove; the positioning cylinder is vertically fixed on the bottom plate of the inner groove adjacent to the outer groove and the two side walls are connected; the lifting column is slidably arranged in the positioning cylinder and its lower end is connected to the clamp located below the bottom plate. The sliding frame is set in the inner groove and the two side walls slide against each other. The upper end of the lifting column is connected to the upper frame of the sliding frame through a second spring. The Z-shaped guide rail is set horizontally in the inner groove and passes through the positioning cylinder and the lifting column. The positioning cylinder has an opening. The Z-shaped guide rail and the lifting column are slidably connected. The guide block is provided on the inner sidewalls of the left and right sides of the sliding frame. The right side wall of the left guide block is an upward inclined surface that matches the left end of the Z-shaped guide rail, and the left side wall of the right guide block is an upward inclined surface that matches the right end of the Z-shaped guide rail. The left and right racks are fixed to the right side wall of the limiting head and the left side frame of the sliding frame, respectively. The front gear is rotatably positioned between the left and right racks and meshes with them. One end of the spring switch slides through the sleeve and connects to the sliding frame.

2. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 1, characterized in that, The lifting column has an oblique hole that is set diagonally downward from left to right, and the Z-shaped guide rail passes through the oblique hole and is slidably connected to it.

3. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 1, characterized in that, The outer groove and the inner groove have a connecting port, and the front gear is rotatably disposed in the connecting port.

4. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 1, characterized in that, It also includes a rear gear, a timing belt, and a transmission rack; wherein: the rear gear is rotatably disposed in the inner groove and located on the right side of the Z-shaped guide rail, and the rear gear is connected to the front gear through the aforementioned timing belt; the transmission rack is vertically fixed on the side wall of the sliding frame and located above the guide block, and the rear gear and the transmission rack mesh.

5. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 1, characterized in that, The upper end of the spring switch is located in a through hole in the side wall of the sleeve, and a bolt or screw is threaded into the through hole. Its lower end is rotatably connected to the upper end of the spring switch.

6. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 1, characterized in that, The lower ends of the left and right sides of the sliding frame are respectively located in two sliding holes on both sides of the base plate, and the lower ends of the left and right sides are slidably connected to the sliding holes.

7. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to any one of claims 1-6, characterized in that, The outer wall of the pipe used for connection with the pipe joint has an annular limiting block, and the clamp is a horizontally arranged "L"-shaped structure consisting of a horizontal block and a longitudinal block connected to its right end; the annular limiting block can be locked in the space between the limiting head and the longitudinal block.

8. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 7, characterized in that, The lower end face of the limiting head has an inclined surface that slopes downwards from left to right.

9. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to any one of claims 1-6, characterized in that, It also includes a sealing ring, which is located in an annular mounting groove on the inner side wall of the sleeve, and the sealing ring is disposed adjacent to the inner groove.

10. The reversible detachable underground high-pressure energy storage pipeline sealing joint according to claim 9, characterized in that, The outer wall of the pipe used for connection with the pipe joint has a beveled deformation limiting member, which causes the sealing ring to deform after the pipe is connected.

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