A pre-embedded pipeline connecting structure with protective support

By using a connection component that combines a threaded ring with a connecting groove in the pre-embedded pipe connection, a fixing rod and an adjusting rod in the inner support component, and an arc plate and an extension plate in the edge protection component to engage, the stress concentration problem at the connection point of the pre-embedded pipe is solved, achieving a stable connection and efficient sealing, and improving the stability and impact resistance of the pre-embedded pipe.

CN224397342UActive Publication Date: 2026-06-23CHINA CONSTR EIGHTH ENG DIV CORP LTD ZHEJIANG CONSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG DIV CORP LTD ZHEJIANG CONSTR CO LTD
Filing Date
2025-07-09
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing pre-buried pipe connection methods are prone to stress concentration and weakened stability due to the height difference between the connection point and the surface of the pipe body, which increases the risk of leakage and damage.

Method used

The connection is achieved by using a threaded ring in the connecting assembly to engage with the connecting groove, combined with the fixing rod and adjusting rod of the inner support assembly, and the arc plate of the edge protection assembly to engage with the extension plate. The buffer cavity is filled with material to achieve a stable connection and efficient sealing.

Benefits of technology

It improves the stability and impact resistance of pre-buried pipe connections, reduces the risk of connection loosening and leakage caused by vibration and external impact, and enhances the tightness and reliability of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a pipeline connecting structure belongs to preburied pipeline connecting technical field, concretely is a kind of preburied pipeline connecting structure with protective support, including a pair of preburied pipeline body and protective structure, a pair of preburied pipeline body between being provided with connecting pipe, the protective structure is fixedly installed on connecting pipe, still include connecting assembly, inner support subassembly and edge protection subassembly;The utility model reached the effect that stable connection, high -efficient sealing anti -permeation, flexible adaptation and long -term protection, solved the pipeline installation mode of the current adoption of sleeve joint, although simple operation, but because connecting part and pipeline main body surface easily form height difference, lead to stress concentration, stability weaken, reduce pipeline system reliability, increase leakage and damage risk problem.
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Description

Technical Field

[0001] This utility model relates to the field of pre-embedded pipe connection technology, and in particular to a pre-embedded pipe connection structure with protective support. Background Technology

[0002] Pre-buried pipelines are important infrastructure that are pre-buried underground or inside building structures to transport fluids (water, gas, communication cables, etc.).

[0003] A search revealed Chinese patent CN207500668U, which discloses a connection structure for embedded pipes. This structure solves the technical problem in existing technologies where threaded connections for embedded pipes easily lead to water leakage due to loose threads, thus affecting the lifespan of cables and signal transmission performance within the pipes. The key technical points are: it includes a first pipe and a second pipe; the first pipe has internal threads, and the second pipe has external threads. The first and second pipes are detachably connected by a threaded connection. A locking groove is provided on the inner wall of the first pipe, and a locking element is installed within the groove. An annular groove is provided on the outer wall of the second pipe to engage with the locking element. The threaded connection of this embedded pipe connection structure is less prone to loosening, making water leakage less likely when the embedded pipe is buried underground, thus improving the lifespan of cables and signal transmission performance within the embedded pipe.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The aforementioned patent uses a socketed pipe installation method, which is simple to operate, but it has certain limitations because the connection part and the surface of the pipe body are prone to form a height difference, which leads to stress concentration, weakened stability, reduced reliability of the pipeline system, and increased risk of leakage and damage. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a pre-embedded pipe connection structure with protective support, achieving stable connection, efficient sealing and leak prevention, flexible adaptation and long-term protection.

[0007] The technical solution to achieve the purpose of this utility model is: a pre-embedded pipe connection structure with protective support, including a pair of pre-embedded pipe bodies and a protective structure, a connecting pipe is provided between the pair of pre-embedded pipe bodies, the protective structure is fixedly installed on the connecting pipe, and also includes a connecting component, an inner support component and a protective edge component;

[0008] The connecting assembly includes a threaded ring that is fixedly installed on the connecting end surface of the pre-embedded pipe body;

[0009] The inner support assembly includes multiple fixed rods fixedly installed on the outside of the connecting pipe, and each fixed rod has an adjusting rod slidably installed inside it;

[0010] The edge protection assembly includes multiple arc plates sleeved on the outside of the connecting pipe, and a buffer cavity is provided between the connecting pipe and the arc plates.

[0011] Preferably, the inner walls on both sides of the connecting pipe are provided with connecting grooves, the threaded ring cooperates with the connecting grooves, and a pair of spacers are fixedly installed inside the connecting pipe.

[0012] Preferably, each of the arc plates has an extension block fixedly installed on both sides, the fixing rod and the adjusting rod are connected by bolts, each adjusting rod has an extension plate fixedly installed at one end, the arc plates are arranged between the extension plates, and each extension plate has a slot at both ends.

[0013] Preferably, the extension block is adapted to the slot, the inner wall of the slot is provided with a limiting groove, and a limiting protrusion is fixedly installed on the surface of the extension block, the limiting protrusion being adapted to the limiting groove.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] Firstly, in the pre-embedded pipe connection structure with protective support, this utility model ensures a stable connection by cooperating with the threaded ring and connecting groove in the connecting component. The elastic material septum not only buffers external vibrations and effectively reduces the risk of connection loosening caused by vibration, but also fills gaps with its own elastic deformation to prevent fluid leakage. At the same time, the septum can limit the spiral installation position of the threaded ring and the connecting pipe, ensuring accurate installation of the connecting component and reducing misalignment.

[0016] Secondly, the hollow fixing rod and adjusting rod of the internal support component of this utility model can be used to flexibly adjust the length to adapt to different pre-embedded pipes. The evenly distributed extension plates enhance the support strength of the connection parts. The arc plate of the edge protection component and the extension plate are engaged to not only make the surface of the connecting pipe flush with the surface of the pre-embedded pipe and eliminate stress concentration caused by height difference, but also the structure of the slot and the limiting slot, the extension block and the limiting protrusion further improves the tightness of the connection. The buffer cavity formed by the arc plate, the extension plate and the connecting pipe can effectively absorb external impact. The synergistic effect of multiple structures comprehensively improves the stability and impact resistance of the pre-embedded pipe connection and reduces the risk of damage.

[0017] This solves the problem that the existing pipe installation method using socket joints, although simple to operate, easily leads to stress concentration and weakened stability due to the height difference between the connection part and the surface of the pipe body, which reduces the reliability of the pipeline system and increases the risk of leakage and damage. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the disassembled structure provided by this utility model;

[0020] Figure 2 This utility model provides Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe provided by this utility model;

[0022] Figure 4 This is a schematic diagram of the arc plate installation structure provided by this utility model;

[0023] Figure 5 This utility model provides Figure 4 A magnified structural diagram at point B;

[0024] Figure 6 This is a schematic diagram of the internal support component structure provided by this utility model;

[0025] Figure 7 This is a side view diagram of the connecting pipe installation structure provided by this utility model;

[0026] Figure 8 This is a schematic diagram of the buffer cavity filling structure provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Embedded pipe body; 11. Connecting pipe; 2. Connecting assembly; 21. Connecting groove; 22. Threaded ring; 23. Spacing pad; 3. Protective structure; 31. Internal support assembly; 32. Edge protection assembly; 311. Fixing rod; 312. Adjusting rod; 313. Extension plate; 321. Arc plate; 322. Slot; 323. Extension block; 4. Limiting protrusion; 41. Limiting groove; 5. Buffer cavity. Detailed Implementation

[0029] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0030] This utility model provides an improved embedded pipe connection structure with protective support. The technical solution of this utility model is as follows:

[0031] like Figures 1-8As shown, a pre-embedded pipe connection structure with protective support includes a pair of pre-embedded pipe bodies 1 and a protective structure 3. A connecting pipe 11 is provided between the pair of pre-embedded pipe bodies 1. The protective structure 3 is fixedly installed on the connecting pipe 11 to achieve a stable connection and precise limit of the edge protection. It also includes a connecting component 2, an inner support component 31 and an edge protection component 32.

[0032] The connecting component 2 includes a threaded ring 22 fixedly installed on the connecting end surface of the pre-embedded pipe body 1. The two pre-embedded pipe bodies 1 are securely connected to the connecting pipe 11 by thread engagement. This connection method is not only convenient to install and disassemble, but also ensures the tightness of the connection.

[0033] The inner support assembly 31 includes multiple fixed rods 311 fixedly installed on the outside of the connecting pipe 11. Each fixed rod 311 has an adjusting rod 312 slidably installed inside, which can flexibly adjust the overall length of the inner support assembly 31 to adapt to pre-embedded pipes of different specifications and spacings, thereby enhancing the versatility and applicability of the connection structure.

[0034] The edge protection assembly 32 includes multiple arc plates 321 sleeved on the outside of the connecting pipe 11. A buffer cavity 5 is provided between the connecting pipe 11 and the arc plate 321. The buffer cavity 5 is filled with materials such as sand and gravel. The filled sand and gravel can further enhance the pressure resistance of the buffer cavity 5 and evenly distribute the pressure from all directions.

[0035] Furthermore, connecting grooves 21 are provided on both inner walls of the connecting pipe 11, and threaded rings 22 cooperate with connecting grooves 21. A pair of spacers 23 are fixedly installed inside the connecting pipe 11. The elastic spacers 23 can fully utilize their buffering performance to absorb and disperse these vibration energies, effectively reducing the risk of connection loosening caused by vibration.

[0036] As a further embodiment of this utility model, an extension block 323 is fixedly installed on both sides of each arc plate 321. The fixing rod 311 and the adjusting rod 312 are connected by bolts. An extension plate 313 is fixedly installed at one end of each adjusting rod 312. The arc plate 321 is arranged between the extension plates 313. A slot 322 is opened at both ends of each extension plate 313. This improves the aesthetics and sealing of the pre-embedded pipeline system, reduces the possibility of external impurities entering the pipeline connection part, and extends the service life of the pipeline.

[0037] Furthermore, the extension block 323 is adapted to the slot 322. The inner wall of the slot 322 is provided with a limiting groove 41. The surface of the extension block 323 is fixedly installed with a limiting protrusion 4. The limiting protrusion 4 is adapted to the limiting groove 41, which can distribute stress more evenly and prevent the connection point from loosening or being damaged due to excessive local stress. This further improves the overall structural strength and stability of the edge protection assembly 32 and ensures the long-term stable operation of the pre-embedded pipe connection structure under complex working conditions.

[0038] The specific working method is as follows: For port pre-processing, a threaded ring 22 is fixedly installed on the connecting end surface of the pre-embedded pipe body 1. For core connection installation, the connecting grooves 21 on both sides of the inner wall of the connecting pipe 11 are aligned with the threaded ring 22. The pipe and connecting pipe are tightly connected by threaded engagement. During installation, the elastic septum 23 inside the connecting pipe 11 is used for buffering, sealing, and installation limitation to ensure tight thread engagement. For inner support component adjustment, the fixing rod 311 of the inner support component 31 is vertically fixed to the outer wall of the connecting pipe 11. The sliding adjustment rod 312 is moved to a position suitable for the pipe spacing and locked with bolts. The fixed rod 311 and the adjusting rod 312 are connected, and the extension plate 313 is installed at the end of the adjusting rod 312 to expand the support area. The extension blocks 323 on both sides of the arc plate 321 are aligned with the slots 322 at both ends of the extension plate 313 and slidably engaged. Ensure that the limiting protrusions 4 on the extension blocks 323 are embedded in the limiting grooves 41 on the inner wall of the slots 322 to achieve mechanical locking. Check whether the surface of the arc plate 321 and the pre-embedded pipe body 1 is flush to eliminate the height difference. Fill the buffer cavity 5 formed by the arc plate 321, the extension plate 313 and the connecting pipe 11 with sand and gravel to enhance the pressure resistance and impact resistance.

[0039] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A pre-embedded pipe connection structure with protective support, comprising a pair of pre-embedded pipe bodies (1) and a protective structure (3), characterized in that: A connecting pipe (11) is provided between a pair of the pre-embedded pipe bodies (1), and the protective structure (3) is fixedly installed on the connecting pipe (11), and also includes; The connecting component (2) includes a threaded ring (22) fixedly installed on the connecting end surface of the pre-embedded pipe body (1); The inner support assembly (31) includes a plurality of fixed rods (311) fixedly installed outside the connecting pipe (11), and each fixed rod (311) is slidably provided with an adjusting rod (312) inside; The edge protection assembly (32) includes a plurality of arc plates (321) sleeved on the outside of the connecting pipe (11), and a buffer cavity (5) is provided between the connecting pipe (11) and the arc plates (321).

2. The embedded pipe connection structure with protective support according to claim 1, characterized in that: The inner walls on both sides of the connecting pipe (11) are provided with connecting grooves (21), the threaded ring (22) cooperates with the connecting grooves (21), and a pair of spacers (23) are fixedly installed inside the connecting pipe (11).

3. The embedded pipe connection structure with protective support according to claim 1, characterized in that: Each of the arc plates (321) has an extension block (323) fixedly installed on both sides. The fixing rod (311) and the adjusting rod (312) are connected by bolts. Each adjusting rod (312) has an extension plate (313) fixedly installed at one end. The arc plates (321) are arranged between the extension plates (313). Each extension plate (313) has a slot (322) at both ends.

4. The embedded pipe connection structure with protective support according to claim 3, characterized in that: The extension block (323) is adapted to the slot (322), the inner wall of the slot (322) is provided with a limiting groove (41), and a limiting protrusion (4) is fixedly installed on the surface of the extension block (323), the limiting protrusion (4) is adapted to the limiting groove (41).