A waterproof device for underwater tunnel through-wall pipe

Abstract

The utility model discloses a waterproof device for underwater tunnel wall -penetrating pipe, related wall -penetrating pipe technical field, the device includes wall -penetrating pipe, sleeve pipe and set between the positioning assembly of both, and positioning assembly includes fixed paste, support seat, internal thread pipe, positioning rod and be equipped with the microcapsule of positioning rod end portion and the magnetic body of embedding, through the length of positioning rod adjustment and carry out coarse positioning, and then the inflation of microcapsule makes it swell, and pushes magnetic body close to sleeve pipe inner wall and forms the double locking of " face contact + magnetic adsorption", realizes the accurate, stable centering of wall -penetrating pipe, support seat adopts the double wave -shaped structure of hard and soft, can buffer vibration and adapt to the uneven pipe wall, the device has solved the problem that the traditional scheme is big, easy to micro - motion wear, and the poor problem of anti - vibration, has improved waterproof reliability.

Description

Technical Field

[0001] This utility model relates to the field of wall-penetrating pipe technology, and in particular to a waterproof device for underwater tunnel wall-penetrating pipes. Background Technology

[0002] As vital transportation or municipal infrastructure spanning rivers, lakes, and seas, underwater tunnels must withstand high water pressure environments over extended periods. Through-wall pipes (such as drainage pipes, cable pipes, and ventilation pipes), serving as the "lifeline" connecting the tunnel's interior and exterior, must penetrate the main tunnel structure (such as immersed tunnel sections and mining tunnel linings). However, the presence of these through-holes disrupts structural continuity, becoming a primary channel for groundwater seepage. Waterproofing devices are the core technology for ensuring the sealing performance around these through-wall pipes, and their design and application directly impact the tunnel's safety and durability.

[0003] Chinese utility model patent CN216692471U discloses a waterproofing device for underwater tunnel through-wall pipes, comprising: a through-wall pipe, a sleeve, a positioning rod, a shackle groove, an internally threaded pipe, a support base, a connecting hole, a fixing sticker, and a groove; the through-wall pipe is sleeved inside the sleeve; multiple positioning rods are provided on the outer wall of the through-wall pipe, and the multiple positioning rods are arranged in a circular array; one end of the positioning rod is movably connected to the inner wall of the sleeve, and a shackle groove is opened on the side of this end of the positioning rod; the other end of the positioning rod is sleeved with an internally threaded pipe, and the internally threaded pipe is threadedly connected to the positioning rod; a support base is welded to one end of the internally threaded pipe; this patent, through an improvement on an underwater tunnel through-wall pipe waterproofing device, has the advantages of reasonable structure, suitability for adjusting the position of thinner through-wall pipes, convenient operation, small error, and good uniform filling.

[0004] While the aforementioned solutions improve operational efficiency to some extent when waterproofing underwater tunnel through-wall pipes, in practical use, the existing support bases have several drawbacks. The V-groove design at the contact end with the through-wall pipe can lead to localized stress concentration when the pipe wall has slight bends or unevenness. This can cause the support bases to loosen under long-term underwater pressure or vibration, resulting in alignment errors and increasing the risk of leakage. Furthermore, the point contact between the positioning rod and the inner wall of the casing makes it susceptible to fretting wear under high-pressure water flow, leading to positional drift after adjustment and affecting long-term sealing. Additionally, the circular array of positioning rods concentrates the load, making them prone to overall displacement due to thermal expansion and contraction of the pipe or external forces in long tunnel applications, resulting in uneven filling and reduced waterproofing reliability in underwater tunnel projects. Therefore, there is an urgent need for a waterproofing device for through-wall pipes that can achieve precise alignment, stable contact, and resistance to vibration and torsion. Utility Model Content

[0005] This application provides a waterproof device for underwater tunnel wall-penetrating pipes, which solves the technical problems in the prior art such as uneven filling of filler due to large alignment errors, unstable contact mode that easily leads to fretting wear and position drift, poor resistance to vibration and pressure changes, insufficient torsional resistance and reduced waterproof reliability. It achieves the technical effects of precise alignment to make the filler filler uniform, stable contact mode to reduce fretting wear and position drift, enhanced resistance to vibration and pressure changes, improved torsional resistance and improved waterproof reliability.

[0006] This application provides a waterproof device for underwater tunnel wall-penetrating pipes, including a wall-penetrating pipe, a sleeve, and a positioning component, wherein the wall-penetrating pipe is sleeved inside the sleeve. The positioning component is disposed between the through-wall pipe and the sleeve, and is used to adjust and fix the center position of the through-wall pipe; the positioning component includes a fixing sticker, a support base, an internally threaded pipe and a positioning rod; the fixing sticker is pasted on the outer side wall of the through-wall pipe, the support base is connected to the positioning rod through the internally threaded pipe, and one end of the positioning rod is movably connected to the inner side wall of the sleeve.

[0007] Furthermore, the positioning component also includes microcapsules and magnetic accumulators; The microcapsule is fixed to the end of the positioning rod, and the magnetic suction body is embedded inside the microcapsule; the microcapsule is made of elastic polymer and is connected to an external air pump through a micro-air channel inside the positioning rod. After being inflated, it expands to form a surface contact with the inner wall of the sleeve. The magnetic attractor is a permanent magnet, cylindrical in shape, located at the three-dimensional center of the microcapsule, and is used to attract the metal wall of the sleeve.

[0008] Furthermore, the support base is provided with two layers, including a rigid layer and a soft layer; The rigid layer is made of rigid plastic with a hardness of Shore D 70-80, and the soft layer is made of soft rubber with a hardness of Shore A 50-60. The soft layer is a wave-shaped structure composed of multiple arc-shaped surfaces, which is used to deform first to absorb vibration, and the rigid layer provides rigid support.

[0009] Furthermore, the fixing adhesive is a plate-shaped structure made of rubber material and is pasted on the outer wall of the through-wall pipe; a connecting hole is opened in the middle of the fixing adhesive, and the internally threaded pipe passes through the connecting hole and is clearance-fitted with it; The fixing patch is also provided with a groove, and the support is embedded in the groove. The thickness of the support is 1-5mm greater than the groove depth to enhance the fixing effect.

[0010] Furthermore, one end of the positioning rod is provided with a shackle groove for disassembling tools; the other end of the positioning rod is provided with an external thread that is connected to the internal thread pipe thread. The extension length can be adjusted by rotating the positioning rod to accommodate sleeves of different pipe diameters.

[0011] Furthermore, the internally threaded tube is a round tube made of metal material, with one end welded and fixed to the support base, and the other end threadedly engaged with the positioning rod; the inner diameter of the internally threaded tube matches the external thread of the positioning rod, forming an adjustable telescopic structure.

[0012] Furthermore, the positioning components are provided in multiple sets, which are attached to the outer surface of the through-wall pipe in an alternating spiral manner to form a distributed fixing network; the spiral spacing of the multiple sets of positioning components is 200-500mm, which is used to distribute the load and enhance the torsional stability.

[0013] Furthermore, the magnetic attraction body is 1-2 mm away from the inner wall of the sleeve. After inflation, the microcapsule expands and pushes the magnetic attraction body closer to the sleeve wall, generating an attraction force of several Newtons to more than ten Newtons. The bumps on the surface of the microcapsule enhance the friction force and form a double lock with the magnetic force.

[0014] One or more technical solutions provided in this application have at least the following technical effects or advantages: By improving the alignment accuracy of the through-wall pipe and sleeve center, the filler is filled evenly, eliminating leakage points; the dual locking of microcapsules and magnetic accumulators ensures long-term stability; the layered design of the support base buffers vibration; and the distributed fixing network of positioning components resists torsion. This effectively solves the technical problems in existing technologies, such as uneven filler filling due to large alignment errors, unstable contact methods that easily lead to fretting wear and position drift, poor resistance to vibration and pressure changes, insufficient torsion resistance, and reduced waterproof reliability. It achieves the technical effects of precise alignment resulting in uniform filler filling, stable contact methods that reduce fretting wear and position drift, enhanced resistance to vibration and pressure changes, improved torsion resistance, and improved waterproof reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a waterproof device for underwater tunnel wall-penetrating pipes according to the present invention.

[0016] Figure 2 This is a side structural cross-sectional view of a waterproof device for underwater tunnel wall-penetrating pipes according to the present invention.

[0017] Figure 3 This is an exploded view of the positioning component of a waterproof device for underwater tunnel wall-penetrating pipes according to this utility model.

[0018] Figure 4This is a schematic diagram of the positioning component of a waterproof device for underwater tunnel wall-penetrating pipes according to the present invention.

[0019] Figure 5 This is a longitudinal full sectional view of the positioning component of a waterproof device for underwater tunnel wall-penetrating pipes according to this utility model.

[0020] In the diagram: 100, through-wall pipe; 101, sleeve; 200, positioning component; 210, fixing sticker; 220, support base; 221, rigid layer; 222, soft layer; 230, internally threaded pipe; 240, positioning rod; 241, shackle groove; 250, microcapsule; 260, magnetic accumulator. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of this application will be given below with reference to the accompanying drawings, which show preferred embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this utility model.

[0022] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figure 1 This is a schematic diagram of the overall structure of a waterproof device for underwater tunnel through-wall pipes according to this utility model. The waterproof device for underwater tunnel through-wall pipes improves the centering accuracy of the through-wall pipe 100 and the sleeve 101, ensures uniform filling of the filler, and eliminates leakage points. The dual locking of the microcapsule 250 and the magnetic 260 ensures long-term stability. The layered design of the support base 220 buffers vibration. The distributed fixing network of the positioning component 200 resists torque. This achieves the technical effects of precise centering leading to uniform filler filling, stable contact reducing fretting wear and position drift, enhanced resistance to vibration and pressure changes, improved torsional resistance, and increased waterproof reliability.

[0025] Example 1: As Figures 1 to 5As shown, this application discloses a waterproof device for a wall-penetrating pipe in an underwater tunnel, comprising a wall-penetrating pipe 100, a sleeve 101, and a positioning component 200, wherein the wall-penetrating pipe 100 is sleeved inside the sleeve 101. The positioning component 200 is disposed between the through-wall pipe 100 and the sleeve 101, and is used to adjust and fix the center position of the through-wall pipe 100; The positioning component 200 includes a fixing sticker 210, a support base 220, an internally threaded tube 230, and a positioning rod 240; The fixing sticker 210 is pasted on the outer wall of the through-wall pipe 100, the support base 220 is connected to the positioning rod 240 through the internal threaded pipe 230, and one end of the positioning rod 240 is movably connected to the inner wall of the sleeve 101.

[0026] like Figures 1 to 5 As shown, the positioning component 200 also includes a microcapsule 250 and a magnetic accumulator 260; The microcapsule 250 is fixed to the end of the positioning rod 240, and the magnetic accumulator 260 is embedded inside the microcapsule 250. The microcapsule 250 is made of elastic polymer and is connected to an external air pump through a micro-air channel inside the positioning rod 240. After being inflated, it expands to form a surface contact with the inner wall of the sleeve 101. The magnetic accumulator 260 is a permanent magnet, cylindrical in shape, located at the three-dimensional center of the microcapsule 250, and is used to adsorb the metal wall of the sleeve 101.

[0027] like Figure 5 As shown, the support base 220 is provided with two layers, including a rigid layer 221 and a soft layer 222; The rigid layer 221 is made of rigid plastic with a Shore D hardness of 70-80, and the soft layer 222 is made of soft rubber with a Shore A hardness of 50-60. The soft layer 222 has a wave-shaped structure composed of multiple arc-shaped surfaces, which is used to absorb vibration through deformation. The rigid layer 221 provides rigid support. This design enables adaptive adaptation to the irregularity of the wall of the through-wall pipe 100, reducing stress concentration and buffering underwater vibration and pressure changes.

[0028] like Figures 3 to 5 As shown, the fixing sticker 210 is a plate-shaped structure made of rubber material and is pasted on the outer wall of the through-wall pipe 100; a connecting hole is opened in the middle of the fixing sticker 210, and the internally threaded pipe 230 passes through the connecting hole and is clearance-fitted with it; The fixing sticker 210 is also provided with a groove, and the support base 220 is embedded in the groove. The thickness of the support base 220 is 1-5mm greater than the groove depth to enhance the fixing effect.

[0029] One end of the positioning rod 240 is provided with a shackle groove 241 for disassembling tools; the other end of the positioning rod 240 is provided with an external thread, which is threaded to the internally threaded tube 230. The extension length of the positioning rod 240 can be adjusted by rotating it to accommodate the sleeve 101 with different pipe diameters.

[0030] The internally threaded tube 230 is a round tube made of metal. One end is welded and fixed to the support base 220, and the other end is threaded to the positioning rod 240. The inner diameter of the internally threaded tube 230 matches the external thread of the positioning rod 240, forming an adjustable telescopic structure.

[0031] Preferred, such as Figure 2 As shown, the positioning components 200 are provided in multiple sets, which are attached to the outer surface of the through-wall pipe 100 in an interlaced spiral manner to form a distributed fixing network; the spiral spacing of the multiple sets of positioning components 200 is 200-500mm, which is used to distribute the load and enhance the torsional stability.

[0032] This application uses multiple sets of positioning components 200 to surround the outer surface of the through-wall pipe 100 in an interlaced spiral manner to form a distributed fixing network. The components can achieve load distribution, and the spiral arrangement enhances torsional resistance and improves overall torsional stability. It avoids overall displacement caused by thermal expansion and contraction of the pipe or external forces, and can solve the technical problems of insufficient torsional resistance and reduced waterproof reliability.

[0033] Furthermore, the magnetic 260 has an adsorption distance of 1-2 mm from the inner wall of the sleeve 101. After inflation, the microcapsule 250 expands and pushes the magnetic 260 closer to the wall of the sleeve 101, generating an adsorption force of several Newtons to more than ten Newtons. The unevenness on the surface of the microcapsule 250 enhances the friction force and forms a double lock with the magnetic force.

[0034] This application uses a microcapsule 250 fixed to the end of the positioning rod 240, with a magnetic 260 embedded inside. After the microcapsule 250 is inflated, it expands and pushes the embedded magnetic 260 to move towards the metal wall of the sleeve 101, shortening the adsorption distance from the initial state to 1-2 mm. Simultaneously, the bumps on the surface of the microcapsule 250 contact the inner wall of the sleeve 101, enhancing mechanical friction, while the magnetic accumulator 260 generates an adsorption force of several to tens of Newtons, forming a dual locking mechanism of "mechanical friction + magnetic force". After inflation, the microcapsule 250 expands to form a surface contact with the inner wall of the sleeve 101 (not the traditional point contact), and the magnetic accumulator 260 simultaneously approaches and adsorbs the wall of the sleeve 101, achieving a fast and stable locking action. The operator can control the inflation volume through the air pump to precisely adjust the contact pressure. The surface contact significantly increases the contact area, disperses local stress, and reduces fretting wear. The dual locking effect (coordination of friction and magnetic force) effectively prevents the through-wall pipe 100 from drifting in high-pressure or vibration environments, ensuring that the center of the through-wall pipe 100 and the sleeve 101 remain aligned for a long time. This can solve the problem of position drift caused by unstable contact methods in traditional devices (such as point contact which easily causes fretting wear).

[0035] In actual operation, the steps of this embodiment are as follows: Step 1: Attach the fixing sticker 210 of the positioning component 200 to the outer wall of the through-wall pipe 100, and embed the support base 220 into the groove of the fixing sticker 210, ensuring that the thickness of the support base 220 is 1-5mm greater than the depth of the groove to enhance the fixing effect; the wavy structure of the soft layer 222 first adheres to the wall surface of the through-wall pipe 100 to absorb the initial vibration; Step 2: Adjust the length of the positioning rod 240 extending out of the internal threaded tube 230 by rotating the positioning rod 240. One end of the positioning rod 240 is provided with an external thread that engages with the internal threaded tube 230; the other end is provided with a shackle groove 241. During adjustment, adjust the length of the positioning rod 240 according to the inner diameter of the sleeve 101 so that the microcapsule 250 at its end can contact the inner wall of the sleeve 101. The internal threaded tube 230 is a metal round tube that is welded and fixed to the support base 220 to form a telescopic structure. Step 3: Slowly insert the through-wall tube 100 with the positioning component 200 installed into the sleeve 101. When inserted, the microcapsule 250 at the end of the positioning rod 240 lightly touches the inner wall of the sleeve 101 to form an initial point contact. At this time, the magnetic 260 is in a dormant state because it is not inflated, but because the permanent magnet can still generate a weak attraction force, it can help the through-wall tube 100 and the center of the sleeve 101 to be aligned. Step 4: Inflate the micro-air channel inside the positioning rod 240 with an external air pump to expand the microcapsule 250. After inflation, the increased volume of the microcapsule 250 pushes the embedded magnetic accumulator 260 toward the wall of the sleeve 101, shortening the adsorption distance from the initial 5-10mm to 1-2mm. The magnetic accumulator 260 generates a strong adsorption force of several to tens of Newtons, forming a magnetic lock with the metal wall of the sleeve 101. At the same time, the uneven points on the surface of the microcapsule 250 enhance the friction, forming a dual fixation of "mechanical + magnetic". Step 5: After inflation and fixation, the center of the through-wall pipe 100 is aligned with the sleeve 101. The soft layer 222 of the support 220 continuously absorbs vibration, while the hard layer 221 provides rigid support. The operator checks the alignment accuracy. After confirming that there are no errors, waterproof filler is filled. The filler is evenly filled into the gap between the through-wall pipe 100 and the sleeve 101. Thanks to the precise alignment, there are no blind spots in the filling. After the construction is completed, the air is released through the air valve to shrink the microcapsule 250. The positioning rod 240 is then removed using the shackle groove 241.

[0036] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: It effectively solves the technical problems in the existing technology, such as uneven filling of filler due to large alignment error, unstable contact mode that easily leads to fretting wear and position drift, poor resistance to vibration and pressure change, insufficient torsional resistance and reduced waterproof reliability. It achieves the technical effects of precise alignment that makes the filler filler uniform, stable contact mode that reduces fretting wear and position drift, enhanced resistance to vibration and pressure change, improved torsional resistance and improved waterproof reliability.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waterproof device for a wall-penetrating pipe in an underwater tunnel, comprising a wall-penetrating pipe (100), a sleeve (101), and a positioning component (200), wherein the wall-penetrating pipe (100) is sleeved inside the sleeve (101), characterized in that: The positioning component (200) is disposed between the through-wall pipe (100) and the sleeve (101) for adjusting and fixing the center position of the through-wall pipe (100); The positioning assembly (200) includes a fixing sticker (210), a support base (220), an internally threaded tube (230), and a positioning rod (240). The fixing sticker (210) is pasted on the outer wall of the through-wall pipe (100), the support base (220) is connected to the positioning rod (240) through the internal threaded pipe (230), and one end of the positioning rod (240) is movably connected to the inner wall of the sleeve (101).

2. The waterproof device for underwater tunnel wall-penetrating pipes as described in claim 1, characterized in that, The positioning component (200) also includes a microcapsule (250) and a magnetic accumulator (260). The microcapsule (250) is fixed to the end of the positioning rod (240), and the magnetic accumulator (260) is embedded inside the microcapsule (250). The microcapsule (250) is made of elastic polymer and is connected to an external air pump through a micro-air channel inside the positioning rod (240). After being inflated, it expands to form a surface contact with the inner wall of the sleeve (101). The magnetic attractor (260) is a permanent magnet, cylindrical in shape, located at the three-dimensional center of the microcapsule (250), and is used to attract the metal wall of the sleeve (101).

3. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 2, characterized in that, The support base (220) has two layers, including a rigid layer (221) and a soft layer (222). The hard layer (221) is made of hard plastic with a hardness of Shore D 70-80, and the soft layer (222) is made of soft rubber with a hardness of Shore A 50-60. The soft layer (222) is a wave-shaped structure composed of multiple arc-shaped surfaces, which is used to first deform and absorb vibration. The hard layer (221) provides rigid support.

4. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 3, characterized in that, The fixing sticker (210) is a plate-shaped structure made of rubber material and is pasted on the outer side wall of the through-wall pipe (100); a connecting hole is opened in the middle of the fixing sticker (210), and the internally threaded pipe (230) passes through the connecting hole and is clearance-fitted with it; The fixing sticker (210) is also provided with a groove, and the support base (220) is embedded in the groove. The thickness of the support base (220) is 1-5mm greater than the groove depth to enhance the fixing effect.

5. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 4, characterized in that, One end of the positioning rod (240) is provided with a shackle groove (241) for disassembling the tool; the other end of the positioning rod (240) is provided with an external thread, which is threaded to the internal threaded pipe (230). The extension length of the positioning rod (240) can be adjusted by rotating it to adapt to the sleeve (101) of different pipe diameters.

6. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 5, characterized in that, The internally threaded tube (230) is a round tube made of metal material. One end is welded and fixed to the support base (220), and the other end is threaded to the positioning rod (240). The inner diameter of the internally threaded tube (230) matches the external thread of the positioning rod (240) to form an adjustable telescopic structure.

7. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 2, characterized in that, The positioning components (200) are provided in multiple sets, which are attached to the outer surface of the through-wall pipe (100) in an interlaced spiral manner to form a distributed fixing network; the spiral spacing of the multiple sets of positioning components (200) is 200-500mm, which is used to distribute the load and enhance the torsional stability.

8. A waterproof device for underwater tunnel wall-penetrating pipes as described in claim 2, characterized in that, The magnetic suction body (260) has an adsorption distance of 1-2 mm from the inner wall of the sleeve (101). After inflation, the microcapsule (250) expands and pushes the magnetic suction body (260) close to the wall of the sleeve (101), generating an adsorption force of several Newtons to more than ten Newtons. The unevenness of the surface of the microcapsule (250) enhances the friction force and forms a double lock with the magnetic force.

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