MPP electric power tube

Abstract

The utility model relates to the technical field of electrical engineering, and discloses an MPP electric power pipe, which is characterized in that a pipe body is made of a high-temperature-resistant material so as to reduce cracks and leakage caused by thermal expansion in a high-temperature environment; the flexible connecting sleeves are arranged at the two ends of the pipe bodies, used for connecting the adjacent pipe bodies, made of elastic materials and capable of effectively absorbing thermal expansion differences between the pipe bodies and preventing cracks and leakage; the inner lining layer is arranged on the inner surface of the pipe body and is made of an anti-microbial corrosion material so as to reduce generation of biological membranes, maintain the conductivity and prolong the service life, and the reinforcing layer is arranged on the outer surface of the pipe body and is made of composite fiber reinforced resin so as to improve the overall strength and corrosion resistance of the pipeline. The MPP electric power pipe can solve the problem that the thermal expansion coefficient of the material of the MPP electric power pipe in a high-temperature environment is not consistent with that of the surrounding environment material, so that cracks and leakage are likely to occur at the connecting part.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical engineering technical field, concretely is a kind of MPP electric power pipe. BACKGROUND

[0002] MPP electric power pipe is a kind of polypropylene material pipeline specially designed for power transmission, because its good electrical performance, chemical corrosion resistance and higher strength are widely used in underground cable laying. However, MPP electric power pipe faces some problems in practical application: first, because the thermal expansion coefficient of MPP electric power pipe material is inconsistent with the surrounding environment material under high temperature environment, leading to the crack and leakage of connecting part;Second, MPP electric power pipe in long distance laying in deep underground can be subjected to microbial corrosion in soil, thereby forming uneven biofilm layer on its inner and outer wall, affecting the electrical conductivity performance and service life;Finally, when MPP electric power pipe is laid in many bends, the cable inside the pipeline may be twisted or extruded due to inertia effect at sharp turn, leading to damage of cable insulation layer and local resistance increase. These problems limit the application and development of MPP electric power pipe to some extent. SUMMARY

[0003] The utility model aims at providing a kind of MPP electric power pipe to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of MPP electric power pipe, comprising:

[0005] Pipe body, made of high-temperature-resistant material, to reduce the crack and leakage caused by thermal expansion under high temperature environment;

[0006] Flexible connecting sleeve, arranged at both ends of the pipe body, for connecting adjacent pipe body, made of elastic material, can effectively absorb the thermal expansion difference between pipe body, prevent crack and leakage;

[0007] Inner lining, arranged on the inner surface of the pipe body, made of anti-microbial corrosion material, to reduce the generation of biofilm, maintain electrical conductivity performance and prolong service life;

[0008] Reinforcing layer, arranged on the outer surface of the pipe body, made of composite fiber reinforced resin, to improve the overall strength and corrosion resistance of the pipeline;

[0009] Anti-twist support, arranged inside the pipe body, multiple support points are arranged along the axial direction, for preventing cable from being twisted or extruded when laid in many bends, to ensure that the insulation layer of cable is not damaged and the resistance is uniform;

[0010] The flexible connecting sleeve is fixed with the pipe body by sealing glue joint to ensure the sealing of the connecting part; the inner lining layer is closely attached to the inner surface of the pipe body with uniform thickness; the reinforcing layer is fixed on the outer surface of the pipe body by hot pressing to form an integrated structure; the anti-twist support is composed of multiple elastic supports and is fixed inside the pipe body by a fixing ring, and the distance between each support is not more than one meter.

[0011] Preferably, the flexible connecting sleeve is a multi-layer structure, the inner layer is a rubber material with high elasticity, and the outer layer is an ultraviolet-resistant and oxidation-resistant high polymer material, which ensures that the flexible connecting sleeve maintains good flexibility and sealing performance at high temperatures, thereby avoiding cracks and leakage at the connecting part due to thermal expansion.

[0012] Preferably, the pipe body is provided with a protruding sealing groove at both ends, and the inner side of the flexible connecting sleeve is provided with a sealing flange matching the sealing groove, which ensures that the sealing glue is more uniformly distributed during connection, improves the sealing effect, and reduces leakage caused by thermal expansion.

[0013] Preferably, the inner lining layer is a multi-layer structure, the innermost layer is a silver ion antibacterial coating with excellent antimicrobial properties, and the outer layer is a corrosion-resistant polyurethane material, forming a double protective layer to reduce biofilm formation, improve electrical conductivity, and prolong the service life of the pipeline.

[0014] Preferably, the reinforcing layer is a three-layer structure, the inner layer is epoxy resin, the middle layer is carbon fiber woven cloth, and the outer layer is corrosion-resistant polyester fiber material, which improves the overall strength and corrosion resistance of the pipeline through multiple layers of composite materials, adapting to underground environments.

[0015] Preferably, the fixing ring on the anti-twist support is connected by a buckle, which can be quickly disassembled and installed for convenient maintenance, and a non-slip pad is provided between the fixing ring and the inner wall of the pipe body to ensure that displacement does not occur during cable laying.

[0016] Preferably, a reinforcing rib is provided between the flexible connecting sleeve and the pipe body, which is uniformly distributed in the radial direction at the connecting part to enhance the tensile strength of the connecting part and ensure that it does not separate at high temperatures, further improving the sealing performance.

[0017] Preferably, the elastic support of the anti-twist support is in an arc shape, and the included angle between every two arc supports is 60 degrees, allowing the cable to be evenly stressed in all directions when laid in multiple bends, reducing twisting or extrusion, and ensuring the integrity of the cable insulation layer and the consistency of electrical resistance.

[0018] Preferably, the inner lining layer and the pipe body form an integrated structure through electrostatic spraying technology, ensuring uniform thickness and forming a flawless antibacterial layer on the inner wall of the pipe body, improving antibacterial performance and preventing biofilm formation.

[0019] Preferably, the reinforcing layer is made by a winding forming process, and special adhesive is used between the fiber layers to tightly combine the layers and improve the overall mechanical properties of the pipe, especially the fatigue resistance of the bending part.

[0020] Compared with the prior art, the utility model provides a kind of MPP electric power pipe, with following beneficial effects:

[0021] 1、The MPP electric power pipe can solve the problem of cracks and leakage in the connecting part due to the thermal expansion coefficient of the MPP electric power pipe materials not consistent with the surrounding environment materials in high temperature environment.

[0022] 2、The MPP electric power pipe can solve the problem of uneven biofilm layer on the inner and outer walls due to microbial corrosion in the soil during long-distance laying of MPP electric power pipe in deep underground, affecting the electrical conductivity and service life.

[0023] 3、The MPP electric power pipe can solve the problem of damage to the insulation layer of the cable and local resistance increase due to the twisting or extrusion of the cable in the pipe caused by inertia in sharp turns during multi-bend laying of MPP electric power pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor:

[0025] Figure 1 It is a whole front view of the structure of the utility model;

[0026] Figure 2 It is a structure diagram of the pipe body;

[0027] Figure 3 It is a structure diagram of the pipe body;

[0028] Figure 4 It is a structure diagram of the fixed ring;

[0029] Figure 5 It is a structure diagram of the flexible connecting sleeve.

[0030] In the figure: 1, pipe body; 2, flexible connecting sleeve; 3, inner lining layer; 4, reinforcing layer; 5, anti-twist support; 6, fixed ring; 7, sealing groove; 8, sealing flange; 9, non-slip pad; 10, reinforcing rib. DETAILED DESCRIPTION

[0031] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The present application provides the following technical solutions:

[0034] In combination Figures 1 to 5 A kind of MPP electric power pipe, comprising:

[0035] Pipe body 1 is made of high-temperature-resistant material to reduce cracks and leakage caused by thermal expansion in high-temperature environment;

[0036] Flexible connecting sleeve 2 is arranged at both ends of the pipe body 1 for connecting adjacent pipe bodies, made of elastic material, which can effectively absorb the thermal expansion difference between the pipe bodies and prevent cracks and leakage;

[0037] Inner lining layer 3 is arranged on the inner surface of the pipe body 1 and made of anti-microbial corrosion material to reduce the formation of biofilm, maintain electrical conductivity and prolong service life;

[0038] Reinforcing layer 4 is arranged on the outer surface of the pipe body 1 and made of composite fiber reinforced resin to improve the overall strength and corrosion resistance of the pipeline;

[0039] Anti-twist support 5 is arranged inside the pipe body 1 and has multiple support points arranged along the axial direction to prevent cable twisting or extrusion during multi-bend laying and ensure that the insulation layer of the cable is not damaged and the resistance is uniform;

[0040] The flexible connecting sleeve 2 is fixed with the pipe body 1 by sealing glue to ensure the sealing of the connection; the inner lining layer 3 is tightly attached to the inner surface of the pipe body 1 with uniform thickness; the reinforcing layer 4 is fixed on the outer surface of the pipe body 1 by hot pressing to form an integrated structure; the anti-twist support 5 is composed of multiple elastic supports and is fixed inside the pipe body 1 by a fixing ring 6, and the distance between each support is not greater than one meter.

[0041] Further, the flexible connecting sleeve 2 is a multi-layer structure, the inner layer is a rubber material with high elasticity, and the outer layer is a high molecular material resistant to ultraviolet and oxidation, which ensures that the flexible connecting sleeve 2 maintains good flexibility and sealing at high temperatures, thereby avoiding cracks and leakage at the connection site due to thermal expansion.

[0042] Further, the pipe body 1 is provided with a raised sealing groove 7 at both ends, and the inner side of the flexible connecting sleeve 2 is provided with a sealing flange 8 matched with the sealing groove 7, which ensures that the sealing glue is more evenly distributed during connection, improves the sealing effect, and reduces leakage caused by thermal expansion.

[0043] Further, the inner lining layer 3 is a multi-layer structure, the innermost layer is a silver ion antibacterial coating with excellent antimicrobial properties, and the outer layer is a corrosion-resistant polyurethane material, forming a double protective layer, reducing biofilm formation, improving electrical conductivity, and prolonging the service life of the pipeline.

[0044] Further, the reinforcing layer 4 is a three-layer structure, the inner layer is epoxy resin, the middle layer is carbon fiber woven cloth, and the outer layer is corrosion-resistant polyester fiber material. Through multi-layer composite materials, the overall strength and corrosion resistance of the pipeline are improved to adapt to underground environments.

[0045] Further, the fixing ring 6 on the anti-twist support 5 is connected by buckling, which can be quickly disassembled and installed, facilitating maintenance, and a non-slip pad 9 is provided between the fixing ring 6 and the inner wall of the pipe body 1 to ensure that displacement does not occur during cable laying.

[0046] Further, a reinforcing rib 10 is provided between the flexible connecting sleeve 2 and the pipe body 1, which is uniformly distributed in the radial direction at the connection, enhancing the tensile strength of the connection site and ensuring that it does not separate at high temperatures, further improving the sealing performance.

[0047] Further, the elastic support of the anti-twist support 5 is in an arc structure, and the included angle between every two arc supports is 120 degrees, so that the cable can be balanced in stress in all directions when laid in multiple bends, reducing the phenomenon of twisting or extrusion, and ensuring the integrity of the cable insulation layer and the consistency of the resistance.

[0048] Further, the inner lining layer 3 and the pipe body 1 form an integrated structure through electrostatic spraying technology, ensuring uniform thickness and forming a flawless antibacterial layer on the inner wall of the pipe body, improving antibacterial performance and preventing biofilm formation.

[0049] Further, the reinforcing layer 4 is made by winding forming process, and special adhesives are used between the fiber layers to tightly bond the layers, improving the overall mechanical properties of the pipeline, especially the fatigue resistance of the curved part.

[0050] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are used herein merely as labels, and are not intended to impose ordinal import.

Claims

1. An MPP power supply tube, comprising: The pipe body (1) is made of high-temperature resistant material to reduce cracks and leakage caused by thermal expansion under high temperature conditions; Flexible connecting sleeves (2) are provided at both ends of the tube body (1) for connecting adjacent tube bodies. They are made of elastic material and can effectively absorb the thermal expansion difference between tube bodies to prevent cracks and leakage. The inner lining (3) is provided on the inner surface of the tube body (1) and is made of antimicrobial corrosion material to reduce the formation of biofilm, maintain electrical conductivity and extend service life; The reinforcing layer (4) is disposed on the outer surface of the pipe body (1) and is made of composite fiber reinforced resin to improve the overall strength and corrosion resistance of the pipe. Anti-twist bracket (5) is set inside the tube body (1) and multiple support points are arranged along the axial direction to prevent the cable from twisting or being squeezed when laying multiple bends, and to ensure that the cable insulation layer is not damaged and the resistance is uniform. The flexible connecting sleeve (2) is fixed to the tube body (1) by sealing adhesive to ensure the sealing of the connection; the inner lining layer (3) is tightly attached to the inner surface of the tube body (1) and has a uniform thickness; the reinforcing layer (4) is fixed to the outer surface of the tube body (1) by hot pressing to form an integral structure; the anti-torsion bracket (5) is composed of multiple elastic brackets and is fixed inside the tube body (1) by fixing rings (6), and the distance between each bracket is no more than one meter.

2. The MPP power pipe according to claim 1, characterized in that: The flexible connecting sleeve (2) has a multi-layer structure, with the inner layer being a highly elastic rubber material and the outer layer being a high-molecular material that is resistant to ultraviolet radiation and oxidation.

3. The MPP power pipe according to claim 1, characterized in that: The tube body (1) has raised sealing grooves (7) at both ends, and the flexible connecting sleeve (2) has a sealing flange (8) that matches the sealing grooves (7) on its inner side.

4. An MPP power pipe according to claim 1, characterized in that: The inner lining layer (3) has a multi-layer structure, with the innermost layer being a silver ion antibacterial coating with excellent antimicrobial properties and the outer layer being a corrosion-resistant polyurethane material.

5. An MPP power pipe according to claim 1, characterized in that: The reinforcing layer (4) has a three-layer structure: the inner layer is epoxy resin, the middle layer is carbon fiber woven fabric, and the outer layer is corrosion-resistant polyester fiber material. The reinforcing layer (4) is made by winding molding process.

6. An MPP power pipe according to claim 1, characterized in that: The fixing ring (6) on the anti-torsion bracket (5) is connected by a buckle, which can be quickly disassembled and installed, making maintenance convenient. At the same time, an anti-slip pad (9) is provided between the fixing ring (6) and the inner wall of the tube body (1).

7. An MPP power pipe according to claim 1, characterized in that: The flexible connecting sleeve (2) is provided with reinforcing ribs (10) between it and the tube body (1). The reinforcing ribs (10) are evenly distributed radially at the connection. The elastic support of the anti-torsion bracket (5) is an arc-shaped structure. The inner lining layer (3) and the tube body (1) are formed into an integrated structure by electrostatic spraying technology.

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