Pressure pipeline and ground fracture crossing method based on special well and multi-stage compensation

Abstract

The invention relates to the technical field of pipeline engineering construction, and particularly discloses a pressure pipeline and ground fissure crossing method based on a special well and multi-stage compensation, which comprises the following steps: arranging a reinforced concrete well body in a ground fissure area, and integrating a maintenance channel, a sump and a remote liquid level monitoring device in the well body, a well body is connected with a pipeline through a flexible wall bushing, sealing rings are arranged at the two ends of the flexible wall bushing, the relative displacement compatibility of the well body and the pipeline is ensured, a core section in the well is provided with a large-deflection loose compensation connector, and vertical displacement of ground fissures and axial displacement of the pipeline are compensated. According to the technical scheme, disengaging deformation of the pipeline is effectively avoided, long-term operation stability of the pipeline is guaranteed, and maintenance convenience is further improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline engineering construction technology, and in particular to a method for pressure pipelines and ground fissure crossings based on special wells and multi-stage compensation. Background Technology

[0002] Ground fissures can be classified into tectonic fissures, non-tectonic fissures, and fissures of mixed origin based on their formation. Tectonic fissures are mainly caused by crustal tectonic activity, while non-tectonic fissures are caused by the action of water and human activities. When ground fissures shift, they continuously generate vertical displacement, causing vertical displacement of underground structures and ultimately leading to damage. Therefore, buildings should employ special structures to cross ground fissures, and pipelines should also adopt reliable protection methods to cross them.

[0003] Currently, the common practice is to use flexible pipes with strong deformation capacity at the ground fissures and fix them with clamps. Large-diameter pipes can be equipped with flexible expansion joints, etc. However, the long-term effect is difficult to guarantee, and problems such as pipe detachment and deformation occur from time to time. There is a lack of integrated inspection and monitoring facilities, making later maintenance difficult.

[0004] Therefore, it is necessary to propose a method for pressure pipelines and ground fissure crossings based on special wells and multi-stage compensation to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of difficulty in maintaining the effect, pipeline delamination and deformation, and maintenance difficulties in existing pipeline crossing ground fissure technologies. This invention provides a method for pressure pipelines and ground fissure crossing based on special wells and multi-level compensation.

[0006] The technical solution of this invention is:

[0007] A method for traversing ground fissures in pressure pipelines based on special wells and multi-stage compensation includes the following steps:

[0008] A reinforced concrete well is installed in the ground fissure area. The well integrates an inspection channel, a sump, and a remote liquid level monitoring device. The connection between the well and the pipeline is made of a flexible through-wall sleeve. Sealing rings are installed at both ends of the flexible through-wall sleeve to ensure the relative displacement compatibility between the well and the pipeline.

[0009] The core section inside the well is equipped with a large-deflection loose-sleeve compensation joint to compensate for the vertical displacement of ground fissures and the axial displacement of the pipeline;

[0010] Single-ball compensation joints and settlement joints are installed at both ends of the well body to absorb deformation and displacement;

[0011] Concrete supports are installed below the pipeline at intervals of 3±0.5m. A steel plate with a rubber pad is installed on the top of the support to prevent the pipeline from slipping out of the air and to reduce frictional resistance.

[0012] Furthermore, the axial compensation of the large deflection loose-sleeve compensating joint is ≥60mm, and the radial deflection angle is ≥6°.

[0013] Furthermore, the radial deflection angle of the single-ball compensating joint is ≥10°.

[0014] Furthermore, the geometric dimensions of the concrete support pier meet the requirement of a length of at least 800mm above the nominal pipe diameter, a width of 600mm, and a height of 1000mm; the support pier is internally anchored with 3 rows of Ф12 steel bars with a transverse spacing of 250mm, the top steel plate thickness is ≥10mm, and the rubber pad thickness is ≥6mm.

[0015] A pressure pipeline based on special wells and multi-stage compensation includes the aforementioned method for traversing ground fissures using pressure pipelines based on special wells and multi-stage compensation. It also includes a reinforced concrete well body installed in the ground fissure area. The well body integrates a maintenance passage, a sump, and a remote liquid level monitoring device. A pipeline is installed inside the well body. A flexible through-wall sleeve is used to connect the well body and the pipeline. Sealing rings are installed at both ends of the flexible through-wall sleeve. A large-deflection loose-sleeve compensation joint is installed on the pipeline near the ground fissure. Single-ball compensation joints and settlement joints are installed at both ends of the well body. A concrete support is installed at the bottom of the pipeline, and a steel plate with a rubber pad is installed on the top of the support.

[0016] Furthermore, the pipeline is composed of several sub-pipes connected to each other. Each sub-pipe has a male connector and a female connector at both ends. The male connector has two opposing first sealing sleeves on its outer side, and the female connector has two opposing second sealing sleeves on its outer side. When the male connector and the female connector are connected, the first sealing sleeves are located between the two second sealing sleeves and form a sealing cavity. A deformable capsule is provided in the sealing cavity. When the male connector rotates relative to the female connector, the deformable capsule deforms and fills the sealing cavity.

[0017] By splicing multiple sub-pipes into a pipeline, the length of each individual sub-pipe can be shortened, thereby increasing the pipeline's strength and making the overall pipeline less prone to deformation. Furthermore, it allows for targeted replacement of specific sub-pipes at deformed locations, facilitating maintenance. Additionally, the male and female connectors facilitate connection between two sub-pipes. The first and second sealing sleeves work together to create a seal, preventing leakage at the sub-pipe connection. The deformation capsule further fills the sealing cavity, further sealing the gap between the first and second sealing sleeves and ensuring a secure seal.

[0018] Furthermore, the surface of the first sealing sleeve that contacts the second sealing sleeve is a convex arc surface, while the surface of the second sealing sleeve that contacts the first sealing sleeve is a concave arc surface. The combination of the convex and concave arc surfaces of the first and second sealing sleeves can eliminate gaps at their contact surfaces, improving sealing performance. Preferably, the first and second sealing sleeves are made of silicone, rubber, or nylon. In addition, the combination of the convex and concave arc surfaces of the first and second sealing sleeves allows the two first sealing sleeves to rotate relative to the second sealing sleeve when the pipeline is subjected to axial or vertical displacement. This, in turn, causes the male and female connectors to rotate relative to each other, thereby achieving the pipeline's compensation function and better coping with the vertical and axial displacement of ground fissures.

[0019] Furthermore, the deformable capsule is filled with liquid or gas. Liquid and gas have excellent flow characteristics. When the male and female connectors rotate relative to each other to compensate, the volume and shape of the sealing cavity change. The deformable capsule is compressed and can change its shape according to the change of the sealing cavity to ensure the filling of the sealing cavity and improve the sealing performance. The liquid or gas inside can support the deformable capsule.

[0020] Furthermore, a pressure plate is provided between the two second sealing sleeves inside the female connector, and bolts are provided on the side wall of the female connector. The bolts drive the pressure plate to move radially along the female connector, thereby squeezing the deformable capsule. When the water pressure in the pipeline is too high or the male and female connectors rotate relative to each other, the sealing effect between the first and second sealing sleeves is reduced. The sealing effect of the sealing cavity cannot be guaranteed by the sealing action between the first and second sealing sleeves and the deformation of the deformable capsule itself, and liquid leakage may occur. Therefore, the pressure plate can further squeeze the deformable capsule, thereby further sealing the gap between the first and second sealing sleeves and improving the sealing effect.

[0021] Furthermore, the side wall of the female connector is provided with a maintenance groove, the opening of which is sealed by a cover plate. The cover plate is detachably connected to the side wall of the female connector, and bolts are placed on the cover plate and threadedly connected to it, which facilitates the replacement and maintenance of the deformable capsule.

[0022] Furthermore, a fixed base and a retaining ring are fitted on the outer side of the male connector end, with the retaining ring located between the fixed base and the male connector. A fixed base is fitted on the outer side of the female connector end, with fixing holes provided in both the fixed base and the fixed base. The end of the female connector is provided with a beveled boss, and a special-shaped bolt with a pointed end is provided in the fixing hole. The pointed end of the special-shaped bolt presses against the beveled boss, thereby locking the fixed base and the fixed base.

[0023] On the one hand, this invention provides a method for traversing ground fissures in pressure pipelines based on special wells and multi-stage compensation. Through a multi-stage compensation structure, it can simultaneously address the vertical and axial displacements of ground fissures, ensuring stable pipeline operation in complex fissure environments and effectively preventing pipeline delamination deformation. On the other hand, this invention also provides a pressure pipeline based on special wells and multi-stage compensation. The special well integrates maintenance channels, sump pits, and remote liquid level monitoring devices, greatly facilitating daily pipeline maintenance and monitoring and reducing operation and maintenance costs. The combined design of concrete supports and shock-absorbing steel plates precisely disperses pipeline stress and prevents delamination. Simultaneously, the sub-pipe splicing design improves pipeline mobility and maintainability, comprehensively enhancing the long-term operational stability and maintenance efficiency of the pipeline. Compared with traditional technologies, this technical solution effectively avoids pipeline delamination deformation, ensures long-term operational stability, and further improves maintenance convenience. Attached Figure Description

[0024] Figure 1 This is a plan view of the present invention;

[0025] Figure 2 For the present invention Figure 1 Cross-sectional view at point AA;

[0026] Figure 3 For the present invention Figure 1 Plan view of the central support pier;

[0027] Figure 4 For the present invention Figure 3 Cross-sectional view at point BB;

[0028] Figure 5 This is a structural diagram of Embodiment 2 of the present invention;

[0029] Figure 6 This is a perspective view of the pipeline of the present invention;

[0030] Figure 7 This is a cross-sectional view of the male and female connector assembly of the present invention;

[0031] Figure 8 This is a cross-sectional view of the male connector, female connector, and deformable capsule assembly of the present invention;

[0032] Figure 9 This is a structural diagram of the combination of the deformable capsule and the male connector of the present invention;

[0033] Figure 10 This is a structural diagram of the male and female connector assembly in Embodiment 4 of the present invention;

[0034] Figure 11 This is a structural diagram of the male and female connector assembly according to Embodiment 5 of the present invention;

[0035] Figure 12This is a structural diagram of the male and female connectors combined according to Embodiment Six of the present invention.

[0036] Attached reference numerals: 1. Ground fissure; 2. Settlement joint; 3. Large deflection loose-sleeve expansion joint; 4. Single-ball expansion joint; 5. Support; 6. Flexible through-wall sleeve; 7. Pipeline; 8. Maintenance access; 9. Sump; 10. Steel plate; 11. Rubber pad; 12. Reinforcing bar; 13. Sub-pipe; 14. First sealing sleeve; 15. Second sealing sleeve; 16. Deformable capsule; 17. Sealing cavity; 18. Male connector; 19. Female connector; 20. Pressure plate; 21. Bolt; 22. Maintenance slot; 23. Cover plate; 24. Fixed base; 25. Fixed base; 26. Retaining ring; 27. Angled boss; 28. Special bolt; 29. ​​Fixing hole. Detailed Implementation

[0037] To make the technical means, technical features, inventive purpose and technical effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0038] Example 1:

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a method for traversing a pressure pipeline through a ground fissure based on a special well and multi-stage compensation, including the following steps: A reinforced concrete well body is installed in the ground fissure zone 1. The well body integrates a maintenance channel 8, a sump 9, and a remote liquid level monitoring device. A flexible through-wall sleeve 6 is used to connect the well body and the pipeline 7. Sealing rings are installed at both ends of the flexible through-wall sleeve 6 to ensure relative displacement compatibility between the well body and the pipeline 7. A large-deflection loose-sleeve compensation joint 3 is configured in the core section of the well to compensate for the vertical displacement of the ground fissure 1 and the axial displacement of the pipeline 7. Single-ball compensation joints 4 and settlement joints 2 are installed at both ends of the well body to absorb deformation and displacement. Figure 3 and Figure 4 As shown, concrete supports 5 are arranged below the pipe 7 at intervals of 3±0.5m. A steel plate 10 with a rubber pad 11 is installed on the top of the supports 5 to prevent the pipe 7 from coming loose and to reduce frictional resistance.

[0040] Furthermore, such as Figure 1 and Figure 2 As shown, the axial compensation of the large deflection loose-sleeve compensating joint 3 is ≥60mm, and the radial deflection angle is ≥6°. Furthermore, the radial deflection angle of the single-ball compensating joint 4 is ≥10°. Furthermore, the geometric dimensions of the concrete support 5 meet the length requirement of the nominal pipe diameter + 800mm, the width is 600mm, and the height is 1000mm. The support 5 is internally anchored with 3 rows of Ф12 steel bars 12 with a transverse spacing of 250mm. The thickness of the top steel plate 10 is ≥10mm, and the thickness of the rubber pad 11 is ≥6mm.

[0041] like Figure 1 and Figure 2 As shown, a pressure pipeline based on special wells and multi-stage compensation includes the above-mentioned method for crossing ground fissures using a pressure pipeline based on special wells and multi-stage compensation. It also includes a reinforced concrete well body set in the ground fissure zone 1. The well body integrates a maintenance channel 8, a sump 9, and a remote liquid level monitoring device. A pipeline 7 is installed inside the well body. A flexible through-wall sleeve 6 connects the well body and the pipeline 7. Sealing rings are installed at both ends of the flexible through-wall sleeve 6. A large-deflection loose-sleeve compensation joint 3 is installed on the pipeline 7 near the ground fissure zone 1. Single-ball compensation joints 4 and settlement joints 2 are installed at both ends of the well body. A concrete support 5 is installed at the bottom of the pipeline 7. A steel plate 10 with a rubber pad 11 is installed on the top of the support 5. The deformable capsule 16 is made of rubber, nylon, or silicone. This method has been experimentally applied in the DN1800 water pipeline 7 project in the ground fissure zone 1 of Xi'an City, successfully crossing the f8 ground fissure zone 1. It has been operating for more than three years and has maintained a relatively stable state.

[0042] Example 2:

[0043] This embodiment also provides a method for traversing a pressure pipeline and ground fissure 1 based on a special well and multi-stage compensation, including the following steps: a reinforced concrete well body is set up in the ground fissure 1 area, and the well body integrates an inspection channel 8, a sump 9 and a remote liquid level monitoring device. The connection between the well body and the pipeline 7 is made of a flexible through-wall sleeve 6, and sealing rings are set at both ends of the flexible through-wall sleeve 6 to ensure the relative displacement compatibility between the well body and the pipeline 7; a large-deflection loose-sleeve compensation joint 3 is configured in the core section of the well to compensate for the vertical displacement of the ground fissure 1 and the axial displacement of the pipeline 7; single-ball compensation joints 4 and settlement joints 2 are set at both ends of the well body to absorb deformation and displacement; concrete supports 5 are arranged below the pipeline 7 at intervals of 3±0.5m, and a steel plate 10 with a rubber pad 11 is set on the top of the supports 5 to prevent the pipeline 7 from being detached and to reduce frictional resistance.

[0044] Furthermore, such as Figure 5 As shown, the axial compensation of the large deflection loose-sleeve compensating joint 3 is ≥60mm, and the radial deflection angle is ≥6°. Furthermore, the radial deflection angle of the single-ball compensating joint 4 is ≥10°. Furthermore, the geometric dimensions of the concrete support 5 meet the length requirement of the nominal pipe diameter + 800mm, the width is 600mm, and the height is 1000mm. The support 5 is internally anchored with 3 rows of Ф12 steel bars 12 with a transverse spacing of 250mm. The thickness of the top steel plate 10 is ≥10mm, and the thickness of the rubber pad 11 is ≥6mm.

[0045] like Figure 6 As shown, the pipe 7 is composed of several sub-pipes 13 interconnected, with male connectors 18 and female connectors 19 welded to both ends of each sub-pipe 13, as shown. Figure 7As shown, the male connector 18 is fitted with two opposing first sealing sleeves 14, and the female connector 19 is fitted with two opposing second sealing sleeves 15. The first sealing sleeves 14 are screwed to the male connector 18, and the second sealing sleeves 15 are screwed to the female connector 19. When the male connector 18 and the female connector 19 are mated, the first sealing sleeves 14 are located between the two second sealing sleeves 15 and form a sealing cavity 17. Figure 8 As shown, a deformable capsule 16 is provided inside the sealing cavity 17. When the male connector 18 rotates relative to the female connector 19, the deformable capsule 16 deforms and fills the sealing cavity 17. Preferably, the deformable capsule 16 is fixedly sleeved on the outside of the male connector 18 by screws.

[0046] like Figure 6 As shown, the pipeline 7 is composed of multiple sub-pipes 13 spliced ​​together. On the one hand, this shortens the length of each individual sub-pipe 13, thereby increasing the strength of the pipeline 7 and making the overall pipeline 7 less prone to deformation. On the other hand, it allows for the replacement of specific sub-pipes 13 at deformed locations, facilitating maintenance. In addition, the male connector 18 and female connector 19 facilitate the connection between two sub-pipes 13. The first sealing sleeve 14 and the second sealing sleeve 15 work together to provide a seal, preventing leakage at the connection of the sub-pipes 13. Since the shape and volume of the sealing cavity 17 change when the first sealing sleeve 14 and the second sealing sleeve 15 rotate relative to each other, liquid in the sub-pipe 13 may leak into the sealing cavity 17 and then leak to the outside. Therefore, a deformable capsule 16 is provided to further fill the sealing cavity 17, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15, ensuring the sealing effect, and solving the leakage problem. The deformable capsule 16 plays the same role in subsequent embodiments.

[0047] Furthermore, such as Figure 7 As shown, the surface of the first sealing sleeve 14 that contacts the second sealing sleeve 15 is a convex arc surface, and the surface of the second sealing sleeve 15 that contacts the first sealing sleeve 14 is a concave arc surface. The combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can eliminate the gaps between their contact surfaces and improve the sealing performance. In addition, the combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can realize the relative rotation of the male connector 18 and the female connector 19, further enhancing the compensation function of the pipeline 7, thereby better coping with the vertical and axial displacement of the ground fissure 1.

[0048] Example 3:

[0049] like Figure 6 and Figure 7As shown, the pipe 7 is formed by interconnecting several sub-pipes 13. Male connectors 18 and female connectors 19 are welded to both ends of each sub-pipe 13. Two opposing first sealing sleeves 14 are fitted onto the outside of the male connector 18, and two opposing second sealing sleeves 15 are fitted onto the outside of the female connector 19. The first sealing sleeves 14 are screwed to the male connector 18, and the second sealing sleeves 15 are screwed to the female connector 19. When the male connector 18 and female connector 19 are mated, the first sealing sleeves 14 are located between the two second sealing sleeves 15, forming a sealing cavity 17. Figure 8 As shown, a deformable capsule 16 is provided inside the sealing cavity 17. When the male connector 18 rotates relative to the female connector 19, the deformable capsule 16 deforms and fills the sealing cavity 17. Preferably, the deformable capsule 16 is sleeved on the outside of the male connector 18.

[0050] The pipeline 7 is composed of multiple sub-pipes 13. On the one hand, it can shorten the length of each individual sub-pipe 13, thereby increasing the stress strength of the pipeline 7 and making the overall pipeline 7 less prone to deformation. On the other hand, it can also replace a specific sub-pipe 13 at the deformed part of the pipeline 7, thus facilitating maintenance. In addition, the male connector 18 and female connector 19 make it easier to connect the two sub-pipes 13. The first sealing sleeve 14 and the second sealing sleeve 15 work together to achieve a sealing effect, preventing leakage at the connection of the sub-pipes 13. The deformable capsule 16 can further fill the sealing cavity 17, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15, ensuring the sealing effect. Preferably, the deformable capsule 16 is fixed to the outside of the male connector 18 by screws.

[0051] like Figure 7 As shown, further, the side of the first sealing sleeve 14 that contacts the second sealing sleeve 15 is an outwardly convex arc-shaped surface, and the side of the second sealing sleeve 15 that contacts the first sealing sleeve 14 is an inwardly concave arc-shaped surface. The combination of the concave and convex arc-shaped surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can eliminate the gaps between their contact surfaces and improve the sealing performance. In addition, the combination of the concave and convex arc-shaped surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can realize the relative rotation of the male connector 18 and the female connector 19, further strengthening the compensation function of the pipeline 7, thereby better coping with the vertical and axial displacement of the ground fissure 1.

[0052] Furthermore, such as Figure 9 As shown, the deformable capsule 16 is filled with liquid or gas. Liquid and gas have good flow characteristics. When the male connector 18 and female connector 19 rotate relative to each other to generate compensation, the volume and shape of the sealing cavity 17 change. The deformable capsule 16 is squeezed and can change its own shape according to the change of the sealing cavity 17 to ensure the filling of the sealing cavity 17 and improve the sealing performance. The liquid or gas inside can support the deformable capsule 16.

[0053] Example 4:

[0054] like Figure 6 and Figure 7 As shown, the pipe 7 is formed by interconnecting several sub-pipes 13. Male connectors 18 and female connectors 19 are welded to both ends of each sub-pipe 13. Two opposing first sealing sleeves 14 are fitted onto the outside of the male connector 18, and two opposing second sealing sleeves 15 are fitted onto the outside of the female connector 19. The first sealing sleeves 14 are screwed to the male connector 18, and the second sealing sleeves 15 are screwed to the female connector 19. When the male connector 18 and female connector 19 are mated, the first sealing sleeves 14 are located between the two second sealing sleeves 15, forming a sealing cavity 17. Figure 8 As shown, a deformable capsule 16 is provided inside the sealing cavity 17. When the male connector 18 rotates relative to the female connector 19, the deformable capsule 16 deforms and fills the sealing cavity 17. Preferably, the deformable capsule 16 is sleeved on the outside of the male connector 18.

[0055] The pipeline 7 is composed of multiple sub-pipes 13. On the one hand, it can shorten the length of each individual sub-pipe 13, thereby increasing the stress strength of the pipeline 7 and making the overall pipeline 7 less prone to deformation. On the other hand, it can also replace a specific sub-pipe 13 at the deformed part of the pipeline 7, thus facilitating maintenance. In addition, the male connector 18 and female connector 19 make it easier to connect the two sub-pipes 13. The first sealing sleeve 14 and the second sealing sleeve 15 work together to achieve a sealing effect, preventing leakage at the connection of the sub-pipes 13. The deformable capsule 16 can further fill the sealing cavity 17, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15, ensuring the sealing effect. Preferably, the deformable capsule 16 is fixed to the outside of the male connector 18 by screws.

[0056] Furthermore, such as Figure 8 As shown, the surface of the first sealing sleeve 14 that contacts the second sealing sleeve 15 is a convex arc surface, and the surface of the second sealing sleeve 15 that contacts the first sealing sleeve 14 is a concave arc surface. The combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can eliminate the gaps between their contact surfaces and improve the sealing performance. In addition, the combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can realize the relative rotation of the male connector 18 and the female connector 19, further enhancing the compensation function of the pipeline 7, thereby better coping with the vertical and axial displacement of the ground fissure 1.

[0057] Furthermore, such as Figure 9As shown, the deformable capsule 16 is filled with liquid or gas. Liquid and gas have good flow characteristics. When the male connector 18 and female connector 19 rotate relative to each other to generate compensation, the volume and shape of the sealing cavity 17 change. The deformable capsule 16 is squeezed and can change its own shape according to the change of the sealing cavity 17 to ensure the filling of the sealing cavity 17 and improve the sealing performance. The liquid or gas inside can support the deformable capsule 16.

[0058] like Figure 10 As shown, a pressure plate 20 is provided between the two second sealing sleeves 15 inside the female connector 19. A bolt 21 is provided on the side wall of the female connector 19. The bolt 21 drives the pressure plate 20 to move radially along the female connector 19, thereby squeezing the deformable capsule 16. When the water pressure in the pipeline 7 is too high or the male connector 18 and the female connector 19 rotate relative to each other, the sealing effect between the first sealing sleeve 14 and the second sealing sleeve 15 is reduced. The sealing effect of the sealing cavity 17 cannot be guaranteed by the sealing effect between the first sealing sleeve 14 and the second sealing sleeve 15 and the deformation of the deformable capsule 16 itself. There may be liquid leakage. Therefore, the pressure plate 20 can further squeeze the deformable capsule 16, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15 and improving the sealing effect.

[0059] Example 5:

[0060] like Figure 6 and Figure 7 As shown, the pipe 7 is formed by interconnecting several sub-pipes 13. Male connectors 18 and female connectors 19 are welded to both ends of each sub-pipe 13. Two opposing first sealing sleeves 14 are fitted onto the outside of the male connector 18, and two opposing second sealing sleeves 15 are fitted onto the outside of the female connector 19. The first sealing sleeves 14 are screwed to the male connector 18, and the second sealing sleeves 15 are screwed to the female connector 19. When the male connector 18 and female connector 19 are mated, the first sealing sleeves 14 are located between the two second sealing sleeves 15, forming a sealing cavity 17. Figure 8 As shown, a deformable capsule 16 is provided inside the sealing cavity 17. When the male connector 18 rotates relative to the female connector 19, the deformable capsule 16 deforms and fills the sealing cavity 17. Preferably, the deformable capsule 16 is sleeved on the outside of the male connector 18.

[0061] The pipeline 7 is composed of multiple sub-pipes 13. On the one hand, it can shorten the length of each individual sub-pipe 13, thereby increasing the stress strength of the pipeline 7 and making the overall pipeline 7 less prone to deformation. On the other hand, it can also replace a specific sub-pipe 13 at the deformed part of the pipeline 7, thus facilitating maintenance. In addition, the male connector 18 and female connector 19 make it easier to connect the two sub-pipes 13. The first sealing sleeve 14 and the second sealing sleeve 15 work together to achieve a sealing effect, preventing leakage at the connection of the sub-pipes 13. The deformable capsule 16 can further fill the sealing cavity 17, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15, ensuring the sealing effect. Preferably, the deformable capsule 16 is fixed to the outside of the male connector 18 by screws.

[0062] Furthermore, such as Figure 8 As shown, the surface of the first sealing sleeve 14 that contacts the second sealing sleeve 15 is a convex arc surface, and the surface of the second sealing sleeve 15 that contacts the first sealing sleeve 14 is a concave arc surface. The combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can eliminate the gaps between their contact surfaces and improve the sealing performance. In addition, the combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can realize the relative rotation of the male connector 18 and the female connector 19, further enhancing the compensation function of the pipeline 7, thereby better coping with the vertical and axial displacement of the ground fissure 1.

[0063] Furthermore, such as Figure 9 As shown, the deformable capsule 16 is filled with liquid or gas. Liquid and gas have good flow characteristics. When the male connector 18 and female connector 19 rotate relative to each other to generate compensation, the volume and shape of the sealing cavity 17 change. The deformable capsule 16 is squeezed and can change its own shape according to the change of the sealing cavity 17 to ensure the filling of the sealing cavity 17 and improve the sealing performance. The liquid or gas inside can support the deformable capsule 16.

[0064] like Figure 10 As shown, a pressure plate 20 is provided between the two second sealing sleeves 15 inside the female connector 19. A bolt 21 is provided on the side wall of the female connector 19. The bolt 21 drives the pressure plate 20 to move radially along the female connector 19, thereby squeezing the deformable capsule 16. When the water pressure in the pipeline 7 is too high or the male connector 18 and the female connector 19 rotate relative to each other, the sealing effect between the first sealing sleeve 14 and the second sealing sleeve 15 is reduced. The sealing effect of the sealing cavity 17 cannot be guaranteed by the sealing effect between the first sealing sleeve 14 and the second sealing sleeve 15 and the deformation of the deformable capsule 16 itself. There may be liquid leakage. Therefore, the pressure plate 20 can further squeeze the deformable capsule 16, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15 and improving the sealing effect.

[0065] like Figure 11 As shown, the side wall of the female connector 19 is provided with a maintenance groove 22. The opening of the maintenance groove 22 is blocked by a cover plate 23. The cover plate 23 is detachably connected to the side wall of the female connector 19. The bolt 21 is placed on the cover plate 23 and threadedly connected to the cover plate 23, which facilitates the replacement and maintenance of the deformable capsule 16.

[0066] The pipe structure in this embodiment is suitable for exposed installation or concealed installation where it is easy to open and disassemble.

[0067] Example 6:

[0068] like Figure 6 and Figure 7 As shown, the pipe 7 is formed by interconnecting several sub-pipes 13. Male connectors 18 and female connectors 19 are welded to both ends of each sub-pipe 13. Two opposing first sealing sleeves 14 are fitted onto the outside of the male connector 18, and two opposing second sealing sleeves 15 are fitted onto the outside of the female connector 19. The first sealing sleeves 14 are screwed to the male connector 18, and the second sealing sleeves 15 are screwed to the female connector 19. When the male connector 18 and female connector 19 are mated, the first sealing sleeves 14 are located between the two second sealing sleeves 15, forming a sealing cavity 17. Figure 8 As shown, a deformable capsule 16 is provided inside the sealing cavity 17. When the male connector 18 rotates relative to the female connector 19, the deformable capsule 16 deforms and fills the sealing cavity 17. Preferably, the deformable capsule 16 is sleeved on the outside of the male connector 18.

[0069] The pipeline 7 is composed of multiple sub-pipes 13. On the one hand, it can shorten the length of each individual sub-pipe 13, thereby increasing the stress strength of the pipeline 7 and making the overall pipeline 7 less prone to deformation. On the other hand, it can also replace a specific sub-pipe 13 at the deformed part of the pipeline 7, thus facilitating maintenance. In addition, the male connector 18 and female connector 19 make it easier to connect the two sub-pipes 13. The first sealing sleeve 14 and the second sealing sleeve 15 work together to achieve a sealing effect, preventing leakage at the connection of the sub-pipes 13. The deformable capsule 16 can further fill the sealing cavity 17, thereby further sealing the gap between the first sealing sleeve 14 and the second sealing sleeve 15, ensuring the sealing effect. Preferably, the deformable capsule 16 is fixed to the outside of the male connector 18 by screws.

[0070] Furthermore, such as Figure 8As shown, the surface of the first sealing sleeve 14 that contacts the second sealing sleeve 15 is a convex arc surface, and the surface of the second sealing sleeve 15 that contacts the first sealing sleeve 14 is a concave arc surface. The combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can eliminate the gaps between their contact surfaces and improve the sealing performance. In addition, the combination of the concave and convex arc surfaces of the first sealing sleeve 14 and the second sealing sleeve 15 can realize the relative rotation of the male connector 18 and the female connector 19, further enhancing the compensation function of the pipeline 7, thereby better coping with the vertical and axial displacement of the ground fissure 1.

[0071] Furthermore, such as Figure 9 As shown, the deformable capsule 16 is filled with liquid or gas. Liquid and gas have good flow characteristics. When the male connector 18 and female connector 19 rotate relative to each other to generate compensation, the volume and shape of the sealing cavity 17 change. The deformable capsule 16 is squeezed and can change its own shape according to the change of the sealing cavity 17 to ensure the filling of the sealing cavity 17 and improve the sealing performance. The liquid or gas inside can support the deformable capsule 16.

[0072] like Figure 12 As shown, a fixing base 24 and a retaining ring 26 are fitted onto the outer side of the male connector end. The retaining ring 26 is located between the fixing base 24 and the male connector. A fixing base 25 is fitted onto the outer side of the female connector end. Both the fixing base 24 and the fixing base 25 have fixing holes 29. The end of the female connector has a beveled boss 27. A special-shaped bolt 28 with a pointed end is installed in the fixing hole 29. The pointed end of the special-shaped bolt 28 presses against the beveled boss 27, thereby locking the fixing base 24 and the fixing base 25. This reinforcement method can effectively prevent the male and female connectors of the pressure pipeline from breaking apart due to excessive force. The retaining ring 26 can provide support for the fixing base 24 and also play a sealing role.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes and modifications made in accordance with the scope of the claims of this invention should fall within the technical scope of this invention.

Claims

1. A method for traversing ground fissures in pressure pipelines based on special wells and multi-stage compensation, characterized in that, Includes the following steps: A reinforced concrete well body is set in the ground fissure (1) area. The well body integrates an inspection channel (8), a water collection pit (9) and a remote liquid level monitoring device. The well body and the pipeline (7) are connected by a flexible through-wall sleeve (6). Sealing rings are set at both ends of the flexible through-wall sleeve (6) to ensure the relative displacement compatibility between the well body and the pipeline (7). The core section inside the well is equipped with a large-deflection loose-sleeve compensation joint (3) to compensate for the vertical displacement of the ground fissure (1) and the axial displacement of the pipeline (7); Single-ball compensation joints (4) and settlement joints (2) are installed at both ends of the well body to absorb deformation and displacement; Concrete supports (5) are installed below the pipe (7) at intervals of 3±0.5m. A steel plate (10) with a rubber pad (11) is installed on the top of the support (5) to prevent the pipe (7) from coming loose and to reduce frictional resistance. The axial compensation of the large deflection loose sleeve compensating joint (3) is ≥60mm, and the radial deflection angle is ≥6°.

2. The method for traversing ground fissures in pressure pipelines based on special wells and multi-stage compensation as described in claim 1, characterized in that: The radial deflection angle of the single ball compensating joint (4) is ≥10°.

3. The method for traversing ground fissures in pressure pipelines based on special wells and multi-stage compensation as described in claim 1, characterized in that: The geometric dimensions of the concrete support (5) meet the length requirement of the nominal pipe diameter + 800mm, the width is 600mm, and the height is 1000mm; the support (5) is anchored with 3 rows of Ф12 steel bars (12) with a horizontal spacing of 250mm, the top steel plate (10) is ≥10mm thick, and the rubber pad (11) is ≥6mm thick.

4. A pressure pipeline based on special wells and multi-stage compensation, comprising the method for crossing ground fissures in a pressure pipeline based on special wells and multi-stage compensation as described in any one of claims 1-3, characterized in that: It also includes a reinforced concrete well body set in the ground fissure (1) area. The well body integrates an inspection channel (8), a sump (9) and a remote liquid level monitoring device. The well body is equipped with a pipe (7). The connection between the well body and the pipe (7) is made by a flexible through-wall sleeve (6). The flexible through-wall sleeve (6) is equipped with sealing rings at both ends. A large deflection loose sleeve compensation joint (3) is installed on the pipe (7) near the ground fissure (1). The two ends of the well body are equipped with a single ball compensation joint (4) and a settlement joint (2). A concrete support (5) is installed at the bottom of the pipe (7). A steel plate (10) with a rubber pad (11) is installed on the top of the support (5).

5. The pressure pipeline based on special wells and multi-stage compensation according to claim 4, characterized in that: The pipe (7) is formed by connecting several sub-pipes (13) together. The two ends of the sub-pipes (13) are respectively provided with male connectors (18) and female connectors (19); The male connector (18) is fitted with two opposing first sealing sleeves (14) on its outer side, and the female connector (19) is fitted with two opposing second sealing sleeves (15) on its outer side. When the male connector (18) and the female connector (19) are connected, the first sealing sleeves (14) are located between the two second sealing sleeves (15) and form a sealing cavity (17). A deformable capsule (16) is provided in the sealing cavity (17). When the male connector (18) rotates relative to the female connector (19), the deformable capsule (16) deforms and fills the sealing cavity (17).

6. The pressure pipeline based on special wells and multi-stage compensation according to claim 5, characterized in that: The side of the first sealing sleeve (14) that contacts the second sealing sleeve (15) is a convex arc surface, and the side of the second sealing sleeve (15) that contacts the first sealing sleeve (14) is a concave arc surface.

7. The pressure pipeline based on special wells and multi-stage compensation according to claim 5, characterized in that: The deformable capsule (16) is filled with liquid or gas.

8. The pressure pipeline based on special wells and multi-stage compensation according to claim 5, characterized in that: A pressure plate (20) is provided between the two second sealing sleeves (15) inside the female connector (19). A bolt (21) is provided on the side wall of the female connector (19). The bolt (21) drives the pressure plate (20) to move radially along the female connector (19) and thus squeeze and deform the capsule (16).

9. The pressure pipeline based on special wells and multi-stage compensation according to claim 8, characterized in that: The side wall of the female connector (19) is provided with a maintenance groove (22). The opening of the maintenance groove (22) is blocked by a cover plate (23). The cover plate (23) is detachably connected to the side wall of the female connector (19). The bolt (21) is placed on the cover plate (23) and threadedly connected to the cover plate (23).

10. The pressure pipeline based on special wells and multi-stage compensation according to claim 5, characterized in that: The male connector is fitted with a fixed base (24) and a retaining ring (26) on the outer side of its end. The retaining ring (26) is located between the fixed base (24) and the male connector. The female connector is fitted with a fixed base (25) on the outer side of its end. Both the fixed base (24) and the fixed base (25) are provided with fixing holes (29). The end of the female connector is provided with a beveled boss (27). A special bolt (28) with a pointed end is provided in the fixing hole (29). The pointed end of the special bolt (28) presses against the beveled boss (27) to lock the fixed base (24) and the fixed base (25).

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