Impact-resistant three-layer composite structure pipe of MPP electric power pipe

Abstract

The utility model relates to the technical field of MPP electric power pipes, in particular to an impact-resistant three-layer composite structure pipe of an MPP electric power pipe. According to the technical scheme, the MPP electric power pipe comprises an MPP electric power outer pipe and an MPP electric power inner pipe, the MPP electric power inner pipe is arranged in the MPP electric power outer pipe, a containing cavity is formed between the MPP electric power inner pipe and the MPP electric power outer pipe, and three connecting plates are fixedly connected to the outer surface of the MPP electric power inner pipe in an annular array at equal intervals; the sides, away from the MPP electric power inner pipe, of the outer surfaces of the three connecting plates are fixedly connected with the inner wall of the MPP electric power outer pipe. According to the utility model, cables can pass through the interior of the MPP power tube in a classified manner and do not interfere with one another, so that the cables are prevented from being wound in the MPP power tube, subsequent maintenance and searching of the passing cables are facilitated, and the impact resistance of the MPP power tube is improved at the same time.

Description

A type of impact-resistant three-layer composite structure MPP power pipe Technical Field

[0001] This utility model relates to the field of MPP power pipe technology, specifically to an impact-resistant three-layer composite structure MPP power pipe. Background Technology

[0002] MPP power conduit is a type of power cable protection pipe made primarily of modified polypropylene (MPP). It features high strength, high pressure resistance, corrosion resistance, and impact resistance, and can be used for extended periods in environments ranging from -5℃ to 70℃. It employs hot-melt welding or socket connection, making construction convenient. It is particularly suitable for underground laying scenarios such as trenchless directional drilling (pull-out pipe), effectively protecting cables from external damage, chemical corrosion, and soil stress. It is widely used in power projects such as municipal power grids, building electrical systems, and industrial parks, and is a highly efficient and energy-saving pipe material that can replace traditional concrete pipes and steel pipes.

[0003] Currently, in the use of MPP power conduits, the internal cables are mixed together, resulting in a messy cable situation that is prone to tangling, making it difficult to pass the cables through and also making subsequent cable maintenance and retrieval difficult. To address this, we propose an impact-resistant three-layer composite structure MPP power conduit. Summary of the Invention

[0004] The purpose of this utility model is to provide an impact-resistant three-layer composite structure MPP power pipe that allows cables to pass through the MPP power pipe separately without interference, avoiding cable entanglement inside the MPP power pipe. This facilitates cable passage and subsequent maintenance and retrieval, while also improving the impact resistance of the MPP power pipe. This solves the problem that in current MPP power pipes, cables pass through together, resulting in a messy cable situation, easy entanglement, and difficulty in cable passage and subsequent maintenance and retrieval.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impact-resistant three-layer composite structure MPP power pipe, comprising an MPP power outer pipe and an MPP power inner pipe, wherein the MPP power inner pipe is disposed inside the MPP power outer pipe, and a receiving cavity is disposed between the MPP power inner pipe and the MPP power outer pipe, and three connecting plates are fixedly connected in a ring array at equal intervals on the outer surface of the MPP power inner pipe, and the side of the outer surface of the three connecting plates facing away from the MPP power inner pipe is fixedly connected to the inner wall of the MPP power outer pipe.

[0006] Preferably, the MPP inner power tube and the MPP outer power tube are coaxial.

[0007] Preferably, the receiving cavity is provided with a partition plate, the inner wall of the MPP power outer tube is provided with a plurality of first dovetail slots in a circular array, and the outer surface of the MPP power inner tube is provided with a plurality of second dovetail slots in a circular array, with the first dovetail slots and the second dovetail slots corresponding one to one. Dovetail inserts are provided on both sides of the outer surface of the partition plate, and two dovetail inserts are respectively located inside the first dovetail slots and the second dovetail slots. The two dovetail inserts on the partition plate are respectively inserted into the first dovetail slots and the second dovetail slots, which can divide the receiving cavity into multiple small chambers, so that more types of cables can pass through the inside of the MPP power tube without interfering with each other, thus improving applicability.

[0008] Preferably, the outer surfaces of the partition plate, connecting plate, and MPP power inner tube, as well as the inner wall of the MPP power outer tube, are all provided with a shielding coating. The shielding coating can shield electromagnetic signals to avoid electromagnetic interference between cables and also effectively prevent electromagnetic interference to external lines.

[0009] Preferably, a buffer rubber sleeve is fixedly fitted onto the outer surface of the MPP power outer tube, which plays a buffering and protective role against impacts, effectively preventing damage to the MPP power outer tube and extending its service life.

[0010] Preferably, the outer surface of the buffer rubber sleeve is provided with a wear-resistant coating. The wear-resistant coating improves the wear resistance of the buffer rubber sleeve surface, thereby avoiding wear on the buffer rubber sleeve surface and extending the service life of the buffer rubber sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up an MPP power outer tube, an MPP power inner tube, a receiving cavity, and connecting plates, achieves the goal of allowing various cables to pass through the inside of the MPP power tube in a classified manner without interfering with each other, avoiding cable entanglement inside the MPP power tube, thus facilitating cable passage and subsequent maintenance and locating. At the same time, it improves the impact resistance of the MPP power tube. The MPP power inner tube, MPP power outer tube, and three connecting plates form a stable triangular structure, which improves impact resistance. The receiving cavity between two adjacent connecting plates allows cables to pass through, and the inside of the MPP power inner tube can also be used for cable passage, so that each cable does not interfere with each other when passing through the MPP power outer tube, thus preventing entanglement.

[0013] 2. This utility model, by setting a first dovetail slot, a second dovetail slot, a partition plate, and dovetail inserts, achieves the effect of further dividing the receiving cavity according to the needs of use, so that more types of cables can pass through the inside of the MPP power pipe without interfering with each other, thus improving the applicability. The two dovetail inserts on the partition plate are respectively inserted into the first dovetail slot and the second dovetail slot, which can divide the receiving cavity into multiple small chambers, so that more types of cables can pass through the inside of the MPP power pipe without interfering with each other.

[0014] 3. By setting a buffer rubber sleeve, this utility model plays a buffering and protective role for the MPP power outer tube under impact, effectively avoiding damage to the MPP power outer tube and extending its service life. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 is a partial three-dimensional structural diagram of the MPP power outer tube and MPP power inner tube of this utility model.

[0017] Figure 3 is a partial three-dimensional structural diagram of the partition plate of this utility model;

[0018] Figure 4 is a schematic diagram of the main structure of this utility model.

[0019] Reference numerals: 1. Buffer rubber sleeve; 2. Wear-resistant coating; 3. MPP power outer tube; 4. Receiving cavity; 5. Connecting plate; 6. MPP power inner tube; 7. Separator plate; 8. Shielding coating; 9. First dovetail slot; 10. Second dovetail slot; 11. Dovetail insert. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] As shown in Figures 1, 2, and 4, this utility model proposes an impact-resistant three-layer composite structure MPP power pipe, comprising an MPP outer power pipe 3 and an MPP inner power pipe 6. The MPP inner power pipe 6 and the MPP outer power pipe 3 are coaxial. The MPP inner power pipe 6 is disposed inside the MPP outer power pipe 3, and a receiving cavity 4 is provided between the MPP inner power pipe 6 and the MPP outer power pipe 3. Three connecting plates 5 are fixedly connected in a ring array at equal intervals on the outer surface of the MPP inner power pipe 6, and the side of the outer surface of the three connecting plates 5 facing away from the MPP inner power pipe 6 is fixed to the inner wall of the MPP outer power pipe 3. The main structure of the MPP power conduit consists of the MPP outer conduit 3, the MPP inner conduit 6, and the connecting plate 7, and is integrally formed by extrusion. The outer surface of the MPP outer conduit 3 is fixedly fitted with a buffer rubber sleeve 1, which plays a buffering and protective role against impacts, effectively preventing damage to the MPP outer conduit 3 and extending its service life. The outer surface of the buffer rubber sleeve 1 is provided with a wear-resistant coating 2, which improves the wear resistance of the surface of the buffer rubber sleeve 1, thereby preventing wear on the surface of the buffer rubber sleeve 1 and extending its service life.

[0023] In this embodiment, a stable triangular structure is formed between the MPP inner power tube 6, the MPP outer power tube 3, and the three connecting plates 5, which improves the impact resistance. A cavity 4 is formed between two adjacent connecting plates 5, which can accommodate cables to pass through. At the same time, cables can also pass through the inside of the MPP inner power tube 6, so that each cable does not interfere with the others when passing through the MPP outer power tube 3, and there will be no entanglement, which facilitates subsequent maintenance and locating.

[0024] Example 2

[0025] As shown in Figures 1-4, this utility model proposes an impact-resistant three-layer composite structure MPP power pipe. Compared with Embodiment 1, this embodiment further includes a partition plate 7 inside the receiving cavity 4, a plurality of first dovetail slots 9 arranged in a ring array on the inner wall of the MPP power outer tube 3, and a plurality of second dovetail slots 10 arranged in a ring array on the outer surface of the MPP power inner tube 6, with the first dovetail slots 9 and the second dovetail slots 10 corresponding one-to-one. Dovetail inserts 11 are respectively provided on both sides of the outer surface of the partition plate 7. The dovetail inserts 11 and the partition plate 7 are integrally formed, and the two dovetail inserts 11 are respectively located inside the first dovetail slots 9 and the second dovetail slots 10. The partition plate 7, the connecting plate 5, the outer surface of the MPP power inner tube 6, and the inner wall of the MPP power outer tube 3 are all provided with a shielding coating 8. The shielding coating 8 can shield electromagnetic signals to avoid electromagnetic interference between cables and also effectively avoid electromagnetic interference to external lines.

[0026] In this embodiment, the two dovetail inserts 11 on the partition plate 7 are inserted into the first dovetail slot 9 and the second dovetail slot 10 respectively, which can divide the receiving cavity 4 into multiple small chambers, so that more types of cables can pass through the MPP power outer tube 3 without interfering with each other, thus improving applicability.

[0027] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An impact-resistant three-layer composite structure MPP power pipe, comprising an MPP power outer pipe (3) and an MPP power inner pipe (6), characterized in that: The MPP power outer tube (3) is provided with an MPP power inner tube (6), and a receiving cavity (4) is provided between the MPP power inner tube (6) and the MPP power outer tube (3). The outer surface of the MPP power inner tube (6) is fixedly connected with three connecting plates (5) in a ring array at equal intervals, and the side of the outer surface of the three connecting plates (5) facing away from the MPP power inner tube (6) is fixedly connected to the inner wall of the MPP power outer tube (3).

2. The impact-resistant three-layer composite structure pipe for MPP electric power pipe according to claim 1, characterized in that: The MPP power inner tube (6) and the MPP power outer tube (3) are coaxial.

3. The MPP power pipe with impact-resistant three-layer composite structure according to claim 1, characterized in that: The cavity (4) is provided with a partition plate (7). The inner wall of the MPP power outer tube (3) is provided with a number of first dovetail slots (9) in a ring array. The outer surface of the MPP power inner tube (6) is provided with a number of second dovetail slots (10) in a ring array. The first dovetail slots (9) and the second dovetail slots (10) correspond one-to-one. The two sides of the outer surface of the partition plate (7) are provided with dovetail inserts (11), and the two dovetail inserts (11) are located inside the first dovetail slots (9) and the second dovetail slots (10) respectively.

4. The impact-resistant three-layer composite structure pipe for MPP electric power pipe according to claim 3, characterized in that: The outer surfaces of the partition plate (7), the connecting plate (5), and the MPP power inner tube (6), as well as the inner wall of the MPP power outer tube (3), are all provided with a shielding coating (8).

5. The MPP power pipe with impact-resistant three-layer composite structure according to claim 1, characterized in that: The outer surface of the MPP power outer tube (3) is fixedly fitted with a buffer rubber sleeve (1).

6. The MPP power pipe with impact-resistant three-layer composite structure according to claim 5, characterized in that: The outer surface of the buffer rubber sleeve (1) is provided with a wear-resistant coating (2).

Images