Novel MPP electric power tube

Abstract

The utility model discloses a novel MPP electric power tube which comprises an outer tube, an inner tube is fixedly sleeved in the outer tube, and the outer tube is made of rubber with certain hardness. The inner pipe is made of modified polypropylene, a cable placement assembly is fixedly sleeved with the inner pipe, and the cable placement assembly comprises a first assembly plate, a second assembly plate and a third assembly plate; the first assembly plate and the second assembly plate are vertically arranged, the third assembly plate is fixedly connected between the first assembly plate and the second assembly plate, and the first assembly plate, the second assembly plate and the third assembly plate form a triangle; the first assembly plate, the second assembly plate and the third assembly plate are all made of modified polypropylene; the cables are respectively placed in the cavities among the first assembly plate, the second assembly plate and the third assembly plate, the cables are prevented from being mutually crossed and stacked, smooth installation of the cables is guaranteed, the cables are not mutually stacked together, heat dissipation is facilitated, and workers can conveniently recognize the cables during maintenance in the later period.

Description

Technical Field

[0001] This utility model relates to the field of power pipe technology, and in particular to a novel MPP power pipe. Background Technology

[0002] MPP power pipes, also known as MPP power cable protection pipes or MPP cable protection pipes, are divided into open-cut and trenchless types. Trenchless MPP power pipes are also called MPP jacking pipes or drag pipes, and are mainly used in municipal, telecommunications and other pipeline projects.

[0003] MPP power conduits have a large diameter, allowing multiple cables to be run through them simultaneously during installation. This effectively utilizes conduit space and facilitates future inspection and maintenance. However, the interior of a typical MPP power conduit is a smooth, round hole. When multiple cables cross and overlap inside, locating the target cable becomes quite challenging during later maintenance and repair work, adding extra difficulty. Furthermore, during multi-cable installation, cables easily become tangled and intertwined, hindering successful installation and increasing the overall complexity of the work. Utility Model Content

[0004] This application provides a novel MPP power conduit in which each cable is placed in the cavity between assembly plate one, assembly plate two, and assembly plate three, avoiding the cables from crossing and overlapping each other, ensuring smooth installation of the cables, and the cables are not stacked together, which is beneficial for heat dissipation and makes it easier for staff to identify them during later maintenance.

[0005] This application provides a novel MPP power conduit, including an outer tube and an inner tube fixedly fitted inside the outer tube. The outer tube is made of rubber with a certain hardness, such as neoprene rubber, with a hardness range of 40-90. The inner tube is made of modified polypropylene as the main raw material, and a cable placement assembly is fixedly fitted inside the inner tube, with at least four of them. The cable placement assembly includes assembly plate one, assembly plate two, and assembly plate three.

[0006] Assembly plate one and assembly plate two are set vertically between each other, and assembly plate three is fixedly connected between assembly plate one and assembly plate two. It is set in an arc shape, and the outer wall of the assembly plate is fixedly connected to the inner wall of the inner tube.

[0007] Assembly plate one, assembly plate two, and assembly plate three form a triangle; all three assembly plates are made of modified polypropylene as the main raw material.

[0008] The inner walls of assembly plate one, assembly plate two, and assembly plate three are further coated with a friction-reducing coating made of polytetrafluoroethylene with a thickness of 5-7mm.

[0009] Furthermore, a buffer pad is provided between the inner tube and the outer tube. The buffer pad is set in an arc shape, and there are four of them, which are evenly distributed around the outer wall of the inner tube with the center of the inner tube as the center point.

[0010] Further cushioning includes cushioning layer one, cushioning layer two, and a support layer;

[0011] The first buffer layer is made of polyurethane foam padding and is attached to the outer wall of the inner tube; the second buffer layer is made of polyethylene padding and is attached to the outer wall of the first buffer layer; the support layer is made of rubber with a certain hardness, the same material as the outer tube, and is attached to the outer wall of the second buffer layer.

[0012] The thickness of the first buffer layer is between 3-5 mm, the thickness of the second buffer layer is the same as that of the first buffer layer, and the thickness of the support layer is twice that of the first buffer layer.

[0013] A spring is fixedly connected between the upper side of the further support layer and the inner wall of the outer tube.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: each cable is placed in the cavity between assembly plate one, assembly plate two and assembly plate three, avoiding the cables from crossing and overlapping each other, ensuring the smooth installation of the cables, and the cables are not stacked together, which is conducive to heat dissipation and makes it easier for staff to identify them during maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the MPP power pipe structure for this application. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the MPP power pipe structure for this application. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the MPP power pipe structure for this application. Figure 3 ;

[0018] Figure 4 This is a schematic diagram of the cable placement assembly structure of this application;

[0019] Figure 5 This is a schematic diagram of the assembly structure of the buffer pad in this application;

[0020] Figure 6 This is a front view of the layered structure of the buffer pad in this application;

[0021] Figure 7 This is an enlarged structural diagram of Part A of this application.

[0022] In the diagram: 10 Outer tube, 20 Buffer pad, 21 Spring, 22 Support layer, 23 Buffer layer two, 24 Buffer layer one, 30 Inner tube, 40 Cable placement assembly, 41 Assembly plate one, 42 Assembly plate two, 43 Assembly plate three. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example 1

[0027] Please see Figures 1-7 A new type of MPP power pipe, including an outer tube 10,

[0028] The outer tube 10 is fitted with an inner tube 30. The outer tube 10 is made of rubber with a certain hardness, such as neoprene rubber, with a Shore A hardness range of 40-90 degrees. It is resistant to aging, ozone, water, and oil, making it suitable for underground cable protection. The inner tube 30 is made of modified polypropylene as the main raw material (the same material as existing MPP power pipes). The inner tube 30 is fitted with a cable placement assembly 40, of which at least four are provided for placing a single cable. The cable placement assembly 40 includes assembly plate one 41, assembly plate two 42, and assembly plate three 43.

[0029] Assembly plate 1 41 and assembly plate 2 42 are vertically arranged between each other. Assembly plate 3 43 is fixedly connected between assembly plate 1 41 and assembly plate 2 42. It is set in an arc shape. The outer wall of assembly plate 43 is fixedly connected to the inner wall of inner tube 30.

[0030] Assembly plate 1 41, assembly plate 2 42 and assembly plate 3 43 form a triangle. The triangular structure can distribute the external force evenly to each side. When the MPP power pipe is under pressure, the whole structure can better bear the load, reduce local pressure concentration, and make the MPP power pipe have a high resistance to external pressure.

[0031] Assembly plate 1 (41), assembly plate 2 (42), and assembly plate 3 (43) are all made of modified polypropylene as the main raw material (the same material as existing MPP power pipes), which provides support for the inner tube 30 and improves the compressive strength of the inner tube 30.

[0032] The inner walls of assembly plate 1 (41), assembly plate 2 (42), and assembly plate 3 (43) are all coated with a friction-reducing coating made of polytetrafluoroethylene (PTFE, also known as Teflon) with a thickness of 5-7mm. This coating reduces friction between the cable and the plate wall, ensuring smooth cable sliding and reducing wear on the plate wall.

[0033] A buffer pad 20 is provided between the inner tube 30 and the outer tube 10 to prevent the inner tube 30 from breaking and to improve its pressure resistance.

[0034] The buffer pad 20 is arc-shaped and has four layers, which are evenly distributed around the outer wall of the inner tube 30 with the center of the inner tube 30 as the center point; the buffer pad 20 includes a first buffer layer 24, a second buffer layer 23 and a support layer 22.

[0035] Buffer layer 1 24 is made of polyurethane foam padding, which is lightweight and highly elastic. It is attached to the outer wall of the inner tube 30 to provide good cushioning performance and increase the compressive strength of the inner tube 30. Buffer layer 23 is made of polyethylene padding, which has good flexibility and compressive strength. It is attached to the outer wall of buffer layer 1 24 to provide cushioning and enhance the compressive strength of the inner tube 30. Support layer 22 is made of rubber with a certain hardness (the same material as the outer tube). It is attached to the outer wall of buffer layer 23 to provide a certain support for the outer tube 10 and also has a certain degree of elasticity and impact resistance.

[0036] The thickness of buffer layer 24 is between 3-5mm, the thickness of buffer layer 23 is the same as that of buffer layer 24, and the thickness of support layer 22 is twice that of buffer layer 24.

[0037] A spring 21 is fixedly connected between the upper side of the support layer 22 and the inner wall of the outer tube 10. The elasticity of the spring 21 can provide a certain support for the outer tube 10. When the outer tube 10 is deformed by external force, the spring 21 is compressed and stretched. The buffer pad 20 can buffer the external force transmitted by the spring 21, thereby reducing the direct external force borne by the inner tube 30 and preventing the inner tube 30 from breaking.

[0038] In actual operation of this embodiment, each cable is placed in the cavity between assembly plate one, assembly plate two, and assembly plate three to avoid the cables from crossing and overlapping each other, ensuring smooth installation of the cables. Moreover, the cables are not stacked together, which is beneficial for heat dissipation and makes it easier for staff to identify them during later maintenance.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, various modifications and variations are possible with this utility model. 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 new type of MPP electrical power tube comprising an outer tube, characterized in that: The outer tube is made of neoprene, and the inner tube is made of polypropylene; the inner tube is fixedly sleeved with cable placing assemblies, and at least four cable placing assemblies are arranged; the cable placing assemblies comprise assembly plate one, assembly plate two and assembly plate three; The assembly plate one and the assembly plate two are arranged perpendicularly, and the assembly plate three is fixedly connected between the assembly plate one and the assembly plate two and is arranged in an arc shape, and the outer wall of the assembly plate is fixedly connected with the inner wall of the inner tube; The assembly plate one, the assembly plate two and the assembly plate three form a triangle, and the assembly plate one, the assembly plate two and the assembly plate three are made of polypropylene.

2. A new type of MPP electrical power tube according to claim 1, characterized in that: The inner wall of the assembly plate one, the inner wall of the assembly plate two and the inner wall of the assembly plate three are coated with a layer of antifriction coating, which is made of polytetrafluoroethylene and has a thickness of 5-7 mm.

3. A new type of MPP electrical power tube according to claim 1, characterized in that: The inner tube and the outer tube are provided with a buffer pad, the buffer pad is arranged in an arc shape, and four buffer pads are evenly distributed on the outer wall of the inner tube with the center of the inner tube as a center point.

4. A new type of MPP electrical tube according to claim 3, characterized in that: The buffer pad comprises a buffer layer one, a buffer layer two and a support layer; The buffer layer one is made of polyurethane foam pad and is attached to the outer wall of the inner tube; the buffer layer two is made of polyethylene pad and is attached to the outer wall of the buffer layer one; and the support layer is made of neoprene and is attached to the outer wall of the buffer layer two.

5. A new type of MPP electrical tube according to claim 4, characterized in that: The thickness of the buffer layer one is 3-5 mm, the thickness of the buffer layer two is equal to the thickness of the buffer layer one, and the thickness of the support layer is twice the thickness of the buffer layer one.

6. A new type of MPP electrical tube according to claim 5, characterized in that: The spring is fixedly connected between the upper side of the support layer and the inner wall of the outer tube.

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