Flattening enhanced lining pipe for trenchless pipeline repair
Through its rapid connection structure and sealing design, the system solves the problem of complex construction of traditional inner-lined pipes in narrow spaces, achieving rapid connection and efficient sealing, thus improving the efficiency and quality of trenchless pipeline repair.
Patent Information
- Application Number
- CN202520803782.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-25
AI Technical Summary
Traditional adhesive bonding and welding methods for compressible reinforced inner liner pipes are time-consuming and difficult to operate in underground pipeline repairs where construction space is limited, resulting in complex construction and high costs.
The quick-connection structure includes docking grooves at both ends of the inner liner tube and movable blocks in the arc groove. It utilizes the elastic potential energy of the torsion spring shaft to achieve quick connection and ensures sealing through a sealing ring.
It significantly reduces construction time, improves construction efficiency, is suitable for working in confined spaces, ensures pipeline sealing, enhances repair quality and reliability, and extends pipeline service life.
Smart Images
Figure CN223868776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inner lining pipe technology, and in particular to a flattenable reinforced inner lining pipe for trenchless pipeline repair. Background Technology
[0002] In urban infrastructure and industrial systems, underground pipeline systems are like the "blood vessels" and "nerves" of a city, undertaking the important mission of transporting water, gas, oil, and discharging sewage. However, over time, affected by factors such as geological changes, external loads, and erosion, many pipelines gradually develop problems such as aging, cracking, corrosion, and leakage. Traditional pipeline repair methods mostly rely on large-scale excavation operations. This method not only has a long construction period but also seriously disrupts traffic and causes significant damage to surrounding buildings and the ecological environment. At the same time, the repair cost is high, and the repair effect is not satisfactory. Especially in densely populated areas with complex underground pipelines, the construction difficulty is extremely high, and it may even be impossible to carry out the work. Against this background, the compressible reinforced inner liner for trenchless pipeline repair plays a key role. This inner liner only requires the excavation of a small working pit, can be folded or flattened, and then inserted into the pipeline to be repaired. It is then restored to its original shape and fixed, achieving efficient repair of damaged pipelines.
[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: Traditional compressible reinforced inner lining tubes are mostly glued or welded. Glue bonding requires strict control of the glue ratio, application and curing environment, which is time-consuming. Welding requires professional equipment and technology, precise parameter control, and cooling time. Moreover, both methods have strict requirements on the construction space. In narrow underground spaces or hard-to-access areas, it is difficult to deploy equipment and ensure the operating environment, making construction difficult.
[0004] Therefore, the aforementioned technical problems need to be solved. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the basic technical solution proposed by this utility model is: a flattenable reinforced inner liner for trenchless pipeline repair, comprising two inner liners that are butted together, with quick-connection structures provided at both ends of the two inner liners, and a sealing structure provided on the inner wall of the two inner liners.
[0006] The quick docking structure includes two docking slots opened at the right end of the inner liner tube, two symmetrically distributed arc-shaped slots opened on the inner wall of the docking slots, and two movable blocks rotatably connected inside the docking slots.
[0007] Preferably, the movable block is provided with an extension block that is slidably connected to the arc-shaped groove on its exterior.
[0008] Preferably, the left end of the inner liner tube is fixedly connected to a plug block, and the two movable blocks are rotatably connected to the inside of the arc-shaped groove through a torsion spring shaft.
[0009] Preferably, when the two inner liner tubes are docked, the insertion block on one inner liner tube comes into contact with the movable block on the other inner liner tube. At the moment of contact, the force applied by the insertion block causes the movable block to rotate around the torsion spring shaft it is connected to. As the insertion block continues to move downward, the movable block, under the action of the elastic potential energy stored in the torsion spring connected to the torsion spring shaft, quickly rebounds to near its initial position and is firmly locked in the docking groove by the elastic force of the torsion spring.
[0010] Preferably, the sealing structure includes a first sealing ring installed at the right end of the inner wall of the inner liner tube and a second sealing ring installed at the left end of the inner wall of the inner liner tube.
[0011] Preferably, when the two inner liner tubes are joined, the first sealing ring and the second sealing ring fit tightly together.
[0012] The beneficial effects of this utility model are:
[0013] By designing a quick-connect structure, when two inner liner tubes are connected, the plug-in block contacts the movable block, causing the movable block to rotate around the torsion spring shaft. When it rotates to a certain angle, the movable block rebounds with the help of the torsion spring's elasticity, tightly locking the plug-in block and thus fixing the position of the two inner liner tubes. This can significantly reduce construction time and improve construction efficiency, making it particularly suitable for working in narrow underground spaces. It effectively overcomes the shortcomings of traditional connection methods, such as complex operation and long time consumption.
[0014] Meanwhile, when the two inner liner pipes are joined, the first sealing ring and the second sealing ring fit tightly together, forming a tight sealing barrier that can effectively prevent the leakage of the medium inside the pipeline. This ensures the sealing performance of the pipeline regardless of complex geological environments or high medium pressure, significantly improving the quality and reliability of trenchless pipeline repair and extending the service life of the pipeline. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the right-side structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the quick docking structure of this utility model;
[0019] Figure 5This is a schematic diagram of the docking groove and arc groove structure of this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Inner liner tube; 2. Quick-connect structure; 21. Connecting groove; 22. Arc groove; 23. Movable block; 24. Insertion block; 3. Sealing structure; 31. First sealing ring; 32. Second sealing ring. Detailed Implementation
[0022] The following will be combined with the appendix Figure 1 To be continued Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0023] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.
[0024] Example 1
[0025] Please see Figure 1 - Figure 5 As shown, this embodiment provides a flattenable reinforced inner liner for trenchless pipeline repair, including two inner liners 1 that are joined together. The inner liner 1 is an existing flattenable reinforced inner liner with bendable characteristics. The two ends of the two inner liners 1 are provided with quick-connect structure 2, and the inner walls of the two inner liners 1 are provided with sealing structure 3.
[0026] The quick docking structure 2 includes two docking grooves 21 opened at the right end of the inner liner tube 1, two symmetrically distributed arc-shaped grooves 22 opened on the inner wall of the docking grooves 21, and two movable blocks 23 rotatably connected inside the docking grooves 21.
[0027] This invention takes into account that traditional compressible reinforced inner liner tubes are mostly bonded or welded. Bonding is time-consuming due to the need for strict control of glue ratio, application, and curing environment, while welding relies on professional equipment and technology to precisely control parameters and requires a long cooling time. At the same time, both methods have strict requirements for construction space. In narrow underground spaces or hard-to-access areas, it is difficult to ensure the equipment can be deployed and the operating environment is guaranteed, resulting in high construction difficulty. Therefore, through the design of the quick docking structure 2, when two inner liner tubes 1 are docked, the insertion block 24 contacts the movable block 23, causing the movable block 23 to rotate around the torsion spring axis. When it rotates to a certain angle, the movable block 23 rebounds with the help of the torsion spring force, tightly locking the insertion block 24, thereby fixing the position of the two inner liner tubes 1. This can significantly reduce construction time and improve construction efficiency, and is especially suitable for operation in narrow underground spaces, effectively overcoming the disadvantages of traditional connection methods that are complicated to operate and time-consuming.
[0028] Meanwhile, when the two inner liner pipes 1 are joined, the first sealing ring 31 and the second sealing ring 32 fit tightly together, forming a tight sealing barrier that can effectively prevent the leakage of the medium inside the pipeline. This ensures the sealing performance of the pipeline regardless of complex geological environments or high medium pressure, significantly improving the quality and reliability of trenchless pipeline repair and extending the service life of the pipeline.
[0029] Example 2
[0030] like Figure 4 - Figure 5 As shown, the movable block 23 is externally provided with an extension block that is slidably connected to the arc-shaped groove 22. The extension block is slidably connected inside the arc-shaped groove 22. The left end of the inner liner tube 1 is fixedly connected to a plug-in block 24. The docking method between the plug-in block 24 and the movable block 23 can be seen in the attached figure. Due to the shape of the plug-in block 24, when the movable block 23 rotates a certain distance and then springs back, it will fix the plug-in block 24. The two movable blocks 23 are rotatably connected inside the arc-shaped groove 22 through a torsion spring shaft. When the two inner liner tubes 1 are docked, the plug-in block 24 on one inner liner tube docks with the movable block 23 on the other inner liner tube. Upon contact, the force applied by the plug block 24 causes the movable block 23 to rotate around the torsion spring shaft it is connected to. As the plug block 24 continues to move downward, the movable block 23, under the action of the elastic potential energy stored in the torsion spring connected to the torsion spring shaft, quickly rebounds to near its initial position. The elastic force of the torsion spring then firmly locks the plug block 24 into the mating groove 21. The sealing structure 3 has a first sealing ring 31 installed on the right end of the inner wall of the inner liner tube 1 and a second sealing ring 32 installed on the left end of the inner wall of the inner liner tube 1. When the two inner liner tubes 1 are mated, the first sealing ring 31 and the second sealing ring 32 fit tightly together.
[0031] It is worth noting that the extension block outside the movable block 23 is slidably connected to the arc groove 22. When the movable block 23 rebounds through the torsion spring shaft, the arc groove 22 can effectively limit the movement and prevent the movable block 23 from disengaging from the docking groove 21. During docking, the insertion block 24 pushes the movable block 23 to rotate around the torsion spring shaft. After insertion, the movable block 23 rebounds with the help of the torsion spring force and firmly locks the insertion block 24 in the docking groove 21. This connection method is reliable and can resist the displacement or vibration caused by factors such as medium pressure and geological changes during pipeline use, ensuring that the inner liner 1 is firmly connected and reducing the risk of disengagement.
[0032] Work steps:
[0033] First, align the left end of one inner liner tube 1 with the insertion block 24 with the right end of another inner liner tube 1 with the mating groove 21 and the movable block 23, and slowly push it in. At this time, the insertion block 24 contacts the movable block 23, and the applied force causes the movable block 23 to rotate around the torsion spring shaft. At the same time, the extension block outside the movable block 23 slides in the arc groove 22. As the insertion block 24 continues to move down, after the movable block 23 rotates to a certain angle, it quickly rebounds to the vicinity of the initial position under the action of the elastic potential energy of the torsion spring connected to the torsion spring shaft. The elastic force of the torsion spring firmly locks the insertion block 24 in the mating groove 21, completing the rapid connection of the two inner liner tubes 1.
[0034] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A compressible reinforced inner liner for trenchless pipeline repair, comprising two butt-jointed inner liner tubes (1), characterized in that: The two inner liner tubes (1) are provided with quick docking structures (2) at both ends, and the inner walls of the two inner liner tubes (1) are provided with sealing structures (3); The quick docking structure (2) includes two docking grooves (21) opened at the right end of the inner liner tube (1), two symmetrically distributed arc-shaped grooves (22) opened on the inner wall of the docking groove (21), and two movable blocks (23) rotatably connected inside the docking groove (21).
2. The compressible reinforced inner liner for trenchless pipeline repair according to claim 1, characterized in that: The movable block (23) is provided with an extension block that is slidably connected to the arc groove (22) on its outside.
3. The compressible reinforced inner liner for trenchless pipeline repair according to claim 2, characterized in that: The left end of the inner liner tube (1) is fixedly connected to a plug block (24), and the two movable blocks (23) are rotatably connected to the inside of the arc groove (22) through a torsion spring shaft.
4. The compressible reinforced inner liner for trenchless pipeline repair according to claim 3, characterized in that: When the two inner liner tubes (1) are docked, the plug block (24) on one inner liner tube comes into contact with the movable block (23) on the other inner liner tube. At the moment of contact, the force applied by the plug block (24) causes the movable block (23) to rotate around the torsion spring shaft connected to it. As the plug block (24) continues to move downward, the movable block (23) quickly rebounds to the vicinity of the initial position under the action of the elastic potential energy stored in the torsion spring connected to the torsion spring shaft, and the plug block (24) is firmly locked in the docking groove (21) by the elastic force of the torsion spring.
5. The compressible reinforced inner liner for trenchless pipeline repair according to claim 1, characterized in that: The sealing structure (3) consists of a first sealing ring (31) installed on the right end of the inner wall of the inner liner tube (1) and a second sealing ring (32) installed on the left end of the inner wall of the inner liner tube (1).
6. The compressible reinforced inner liner for trenchless pipeline repair according to claim 5, characterized in that: When the two inner liner tubes (1) are joined together, the first sealing ring (31) and the second sealing ring (32) fit tightly together.