CN221884687U - Modified polypropylene insulation photoelectric composite cable - Google Patents

Abstract

The present application relates to a modified polypropylene insulated optoelectronic composite cable, which includes an optoelectronic composite cable body, wherein the optoelectronic composite cable body includes a plurality of conductive bodies, a plurality of optical cables and a sheath body, wherein the sheath body is installed outside the conductive bodies and the optical cables to cover and connect the conductive bodies and the optical cables. The present application has the characteristics of being soft, easy to bend, tensile-resistant, wear-resistant, water-resistant, solvent-resistant and aging-resistant, and especially enhances the physical and mechanical properties of the optoelectronic composite cable body, reduces the occurrence of wire core breakage and deformation defects of the optoelectronic composite cable body during use, and prolongs the service life of the cable.

Description

A modified polypropylene insulated photoelectric composite cable

Technical Field

The utility model relates to the technical field of cables, in particular to a modified polypropylene insulated photoelectric composite cable.

Background Art

Aluminum alloy cables are lighter than copper cables. When the current carrying capacity is the same, the weight of aluminum alloy cables is about half of that of copper cables. The use of aluminum alloy cables can reduce cable weight, reduce installation costs, reduce wear on equipment and cables, and make installation work easier.

At present, most commonly used armored cables are made of steel belt armor, which is heavy and has a very high installation cost, and also has poor corrosion resistance. If aluminum alloy belt armor is used, the cable weight can be reduced, laying is more convenient, and bridge installation can be avoided, which can reduce installation costs.

Communication optical cable is composed of a cable core and an outer sheath made of several optical fibers. Optical fiber has the characteristics of much larger transmission capacity, less attenuation, long transmission distance, small size, light weight, no electromagnetic interference, low cost, etc. It is currently the most important communication transmission medium. Communication optical cable is widely used in signal transmission in various departments such as telecommunications, electricity, and broadcasting.

With respect to the above-mentioned related technologies, the inventors believe that there are defects in that the physical and mechanical properties are not sufficient, which affects the service life.

Utility Model Content

In order to improve the defect of communication optical cables that affects their service life due to insufficient physical and mechanical properties, the present application provides a modified polypropylene insulated optoelectronic composite cable.

The modified polypropylene insulated optical fiber composite cable provided in this application adopts the following technical solution:

A modified polypropylene insulated optoelectronic composite cable comprises an optoelectronic composite cable body, wherein the optoelectronic composite cable body comprises a plurality of conductive bodies, a plurality of optical cables and a sheath body, wherein the sheath body is installed outside the conductive bodies and the optical cables to cover and connect the conductive bodies and the optical cables.

By adopting the above technical scheme, the sheath body effectively protects the conductive body and the optical cable to prevent physical damage during installation and use, thereby improving the reliability and stability of the optoelectronic composite cable. The conductive body and the optical cable are coated in the same sheath body, making the overall structure of the optoelectronic composite cable more compact and reducing space occupancy, making it suitable for installation in a small space. The optoelectronic composite cable body includes two main functions of telecommunication signal transmission and power transmission, and is suitable for a variety of application scenarios such as communication networks and power systems.

The sheath body 8 includes an oxygen-isolating layer, an armor layer and an outer sheath which are radially stacked. The innermost circle of the sheath body is provided with an oxygen-isolating layer for covering a number of conductive bodies and optical cables. A sheath inner cavity is provided in the oxygen-isolating layer. The armor layer is sleeved on the outer circumference of the oxygen-isolating layer for the armor layer to cover the oxygen-isolating layer. The outer sheath is sleeved on the outer circumference of the armor layer for the outer sheath to cover the armor layer.

By adopting the above technical scheme, the provision of the oxygen barrier layer helps to prevent oxygen from entering the interior of the cable, thereby reducing the oxidation reaction in the cable, reducing the degree of oxidation of the conductive body and the optical cable, and improving the insulation performance and stability of the cable. The armor layer effectively provides mechanical protection to prevent the cable from being physically damaged on the outside. The outer sheath increases the durability of the cable, prevents the cable from being corroded by external media, liquids, dust and chemicals, and improves the service life of the cable in harsh environments. The sheath body with a multi-layer structure cooperates with each layer to jointly protect the conductive body and the optical cable, making the cable more stable and reliable, able to adapt to various complex and harsh environmental conditions, and providing a wider range of applications.

A plurality of conductive bodies and optical cables are arranged in the inner cavity of the sheath. The conductive bodies are evenly distributed along the circumference of the inner cavity of the sheath. The optical cables are evenly distributed along the circumference of the inner cavity of the sheath. The optical cables are located between two adjacent conductive bodies.

By adopting the above technical scheme, the conductive bodies are evenly distributed along the circumference of the inner cavity of the sheath, and the conductive parts are evenly distributed, which improves the uniformity of current transmission, reduces resistance loss, and increases the performance and efficiency of the cable. The optical cable is located between two adjacent conductive bodies, which effectively isolates the optical cable and the conductive wire to prevent mutual interference, thereby improving the stability and reliability of the cable. The optical cable and the conductive bodies are evenly distributed in the inner cavity of the sheath to achieve a compact structure of the cable, save space, and are easier to install and maintain. Electric power and optical signals can be transmitted simultaneously, and the optical cable and the conductive wire are arranged separately, which has a high anti-interference ability and reduces the influence of external electromagnetic interference on signal transmission.

The conductive body includes a conductor and an insulating layer, wherein the insulating layer is located outside the conductor so that the insulating layer covers the conductor.

By adopting the above technical solution, it is helpful to extend the life of the conductor and improve the reliability of the wire or cable, improve safety and reduce the risk of electric shock.

The insulating layer is made of modified polypropylene insulating material.

By adopting the above technical scheme, the insulating layer has good electrical insulation performance, heat resistance and chemical stability, prevents current leakage or leakage, improves the safety and reliability of wires or cables, maintains stable insulation performance in high temperature environment, has good resistance to many chemicals and corrosive environments, and extends the life of wires or cables.

The oxygen barrier layer is a low-smoke, halogen-free, flame-retardant polyolefin oxygen barrier material.

By adopting the above technical scheme, the oxygen barrier layer has excellent flame retardant properties, which can slow down the spread of fire in a fire or high temperature environment, improve the safety of wires or cables in fire conditions, reduce the risk of smoke generation and harmful gas release, effectively prevent oxygen from entering the insulation layer of the wire or cable, reduce oxygen oxidation and aging of the insulating material, and extend the service life of the wire or cable.

The armor layer is aluminum alloy belt interlocking armor.

By adopting the above technical scheme, the armor layer has good forming and processing performance, high strength, especially high fatigue resistance, corrosion resistance and good weldability, which reduces the weight of the cable, makes laying more convenient, eliminates the need for bridge installation, and reduces installation costs.

The outer sheath is made of polyolefin environmentally friendly material having a temperature resistance grade equivalent to that of the insulation layer material through extrusion.

By adopting the above technical solution, the outer sheath has an excellent flame retardant effect, stable performance, good self-extinguishing property, low smoke release and low toxicity.

The optical cable is a communication optical cable, comprising an optical fiber, a fiber paste and a sleeve, wherein the fiber paste is filled between the optical fiber and the sleeve.

By adopting the above technical solution, the optical cable uses optical fiber as the transmission medium. The optical cable has excellent optical transmission performance, can achieve high-speed, high-bandwidth data transmission, is suitable for long-distance data transmission in the fields of communication and data transmission, and has small signal attenuation and resistance to electromagnetic interference. The outer sheath of the optical cable 3 provides physical protection to prevent the optical fiber from being affected by external factors such as mechanical damage and moisture intrusion. The fiber paste is filled between the optical fiber and the sheath, which helps to maintain the stable position of the optical fiber, reduce mechanical stress, improve the reliability and life of the optical cable, and is waterproof and moisture-proof.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The sheath body effectively protects the conductive body and the optical cable to prevent physical damage during installation and use, thereby improving the reliability and stability of the optoelectronic composite cable. The conductive body and the optical cable are wrapped in the same sheath body, making the overall structure of the optoelectronic composite cable more compact and reducing space occupancy, making it suitable for installation in small spaces. The optoelectronic composite cable body includes two main functions: telecommunication signal transmission and power transmission, and is suitable for a variety of application scenarios such as communication networks and power systems.

2. The setting of oxygen barrier helps to prevent oxygen from entering the interior of the cable, thereby reducing the oxidation reaction in the cable, reducing the degree of oxidation of the conductive body and the optical cable, and improving the insulation performance and stability of the cable. The armor layer effectively provides mechanical protection to prevent the cable from being physically damaged on the outside. The outer sheath increases the durability of the cable, prevents the erosion of the cable by external media, liquids, dust and chemicals, and improves the service life of the cable in harsh environments. The multi-layer structure of the sheath body and the cooperation between the layers jointly protect the conductive body and the optical cable, making the cable more stable and reliable, able to adapt to various complex and harsh environmental conditions, and providing a wider range of applications.

3. The conductive bodies are evenly distributed along the circumference of the inner cavity of the sheath, and the conductive parts are evenly distributed, which improves the uniformity of current transmission, reduces resistance loss, and increases the performance and efficiency of the cable. The optical cable is located between two adjacent conductive bodies, effectively isolating the optical cable and the conductive wire to prevent mutual interference, thereby improving the stability and reliability of the cable. The optical cable and the conductive bodies are evenly distributed in the inner cavity of the sheath to achieve a compact cable structure, save space, and are easier to install and maintain. It can transmit power and optical signals at the same time, and the optical cable and the conductive wire are arranged separately, which has a high anti-interference ability and reduces the impact of external electromagnetic interference on signal transmission.

4. The insulating layer of the conductive body has good electrical insulation performance, heat resistance and chemical stability, prevents current leakage or leakage, improves the safety and reliability of wires or cables, maintains stable insulation performance in high temperature environment, and has good resistance to many chemical substances and corrosive environment; the oxygen barrier layer has excellent flame retardant properties, improves the safety of wires or cables in fire conditions, reduces the risk of smoke generation and harmful gas release, effectively prevents oxygen from entering the insulating layer of wires or cables, reduces oxygen oxidation and aging of insulating materials, and extends the service life of wires or cables; the armor layer has good forming and processing performance, high strength, especially high fatigue strength, good corrosion resistance and weldability, reduces cable weight, makes laying more convenient, eliminates bridge installation, and reduces installation costs; the outer sheath has excellent flame retardant effect, stable performance, good self-extinguishing property, low smoke release, and low toxicity.

5. The optical cable uses optical fiber as the transmission medium. The optical cable has excellent optical transmission performance and can achieve high-speed, high-bandwidth data transmission. It is suitable for long-distance data transmission in the fields of communication and data transmission. It has small signal attenuation and is resistant to electromagnetic interference. The outer sheath of the optical cable provides physical protection to prevent the optical fiber from being affected by external factors such as mechanical damage and moisture intrusion. The fiber paste is filled between the optical fiber and the sheath, which helps to maintain the stable position of the optical fiber, reduce mechanical stress, improve the reliability and life of the optical cable, and is waterproof and moisture-proof.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a specific implementation mode of the present utility model.

Explanation of the reference numerals: 1. conductor; 2. insulation; 3. optical cable; 4. oxygen barrier layer; 5. armor layer; 6. outer sheath; 7. conductive body; 8. sheath body; 9. sheath inner cavity; 10. optoelectronic composite cable body.

DETAILED DESCRIPTION

The present application is described in detail below in conjunction with FIG1 .

This embodiment discloses a modified polypropylene insulated optoelectronic composite cable. Referring to Figure 1, the optoelectronic composite cable body 10 includes a plurality of conductive bodies 7, a plurality of optical cables 3 and a sheath body 8. The sheath body 8 is installed outside the conductive bodies 7 and the optical cables 3 to cover and connect the conductive bodies 7 and the optical cables 3, so that the optoelectronic composite cable body 10 constitutes an optoelectronic composite cable for power and communication transmission. The sheath body 8 effectively protects the conductive bodies 7 and the optical cables 3 inside, and prevents the conductive bodies 7 and the optical cables 3 from being physically damaged during installation and use, thereby improving the reliability and stability of the optoelectronic composite cable body 10. The conductive bodies 7 and the optical cables 3 are covered in the same sheath body 8, so that the overall structure of the optoelectronic composite cable body 7 is more compact, and the space occupancy is reduced. The transmission function of the optoelectronic composite cable body 10 includes two main functions: telecommunication signal transmission and power transmission, and is suitable for a variety of application scenarios of communication networks and power systems.

1, the sheath body 8 includes an oxygen-isolating layer 4, an armor layer 5 and an outer sheath 6 which are radially stacked from the inside to the outside, the oxygen-isolating layer 4 is a low-smoke halogen-free flame-retardant polyolefin oxygen-isolating material, the armor layer 5 is an aluminum alloy belt interlocking armor, and the outer sheath 6 is formed by extrusion of a polyolefin environmentally friendly material having a temperature resistance grade equivalent to that of the insulating layer material, the innermost circle of the sheath body 8 is provided with an oxygen-isolating layer 4 for covering a plurality of conductive bodies 7 and optical cables 3, a sheath inner cavity 9 is provided in the oxygen-isolating layer 4, a plurality of conductive bodies 7 and optical cables 3 are provided in the sheath inner cavity 9, the conductive bodies 7 are uniformly distributed along the sheath inner cavity 9 in the circumferential direction, the optical cables 3 are uniformly distributed along the sheath inner cavity 9 in the circumferential direction, and the optical cables 3 are located between two adjacent conductive bodies 7, the armor layer 5 is sleeved on the outer circumference of the oxygen-isolating layer 4 for the armor layer 5 to cover the oxygen-isolating layer 4, and the outer sheath 6 is sleeved on the outer circumference of the armor layer 5 for the outer sheath 6 to cover the armor layer 5;

The oxygen barrier layer 4 is a low-smoke halogen-free flame-retardant polyolefin oxygen barrier material, which has flame retardancy, a high oxygen index, and has heat insulation and oxygen isolation properties. When burned, no halogen acid gas is released, and the amount of toxic and corrosive gas released is extremely small, the smoke concentration is extremely low, and the flame retardant effect is excellent;

The armor layer 5 is an aluminum alloy belt interlocking armor. After the aluminum alloy belt is pre-pressed into an "S"-shaped surface, it is rotated around the cable core and wrapped around the cable core. The "S"-shaped surfaces of each section are interlocked with each other to form a self-locking armor sheath. The armor belt is made of 5000 series aluminum alloy belt, which has the physical characteristics of high forming and processing performance, high strength, fatigue resistance, corrosion resistance and excellent weldability.

The outer sheath 6 adopts environmentally friendly polyolefin sheath material. The highly flame-retardant polyolefin low-smoke halogen-free cable sheath material is a thermoplastic material with excellent flame-retardant effect, good self-extinguishing property, low smoke release and low toxicity.

1 , the conductive body 7 includes a conductor 1 and an insulating layer 2, wherein the insulating layer 2 is located outside the conductor 1 so that the insulating layer 2 covers the conductor 1;

Conductor 1 is made of aluminum alloy conductors that are twisted and pressed. The density of aluminum alloy conductors is better than that of copper conductors. When the current carrying capacity is the same, the weight of aluminum alloy cables is about half of that of copper cables.

The insulating layer 2 is a modified polypropylene insulating material with excellent heat resistance. The long-term use temperature can be as high as 100-120°C. The melting point of isotactic polypropylene can reach up to 170°C. Polypropylene is a non-polar plastic with excellent chemical stability and high chemical corrosion resistance. At room temperature, only strong oxidizing acids can corrode it. The insulating layer 2 made of modified polypropylene insulating material has very low water absorption, and the water absorption rate is less than 0.01%. The mechanical strength, rigidity and stress cracking resistance of the insulating layer 2 made of modified polypropylene insulating material all exceed those of high-density polyethylene, and it has outstanding elongation and bending fatigue resistance. The insulating layer 2 made of modified polypropylene insulating material has excellent electrical insulation performance and high breakdown voltage strength. Its electrical properties are basically not affected by changes in environmental humidity and electric field frequency. It is an excellent dielectric material and electrical insulating material and is used as a high-frequency insulating material.

1, the optical cable 3 is a communication optical cable, and the optical cable 3 includes an optical fiber, a fiber paste and a casing. The fiber paste is filled between the optical fiber and the casing. The fiber paste is stable, highly hydrophobic, has good compatibility, is chemically non-corrosive, does not affect the optical and mechanical properties, is soft within the use temperature range, has a small linear expansion coefficient, and has a small thermal shrinkage. The fiber paste is easy to fill, easy to control, non-toxic, safe to use, has a long storage time, and is relatively low in price;

The optical fiber is preferably made of quartz glass and polyurethane acrylic coating. Quartz glass has good optical, thermal, mechanical, chemical and electrical properties. At the same time, polyurethane acrylic coating has strong wear resistance, water resistance, chemical corrosion resistance, good insulation and better curing speed.

The casing is preferably a polypropylene semi-loose and semi-tight casing, because if the optical fiber is in a tight casing, there is no free movement space, and the diameter is very small, the weight is light, and it is easy to strip, lay and connect. However, the large tensile stress directly affects the attenuation performance of the optical fiber. Polypropylene has the advantages of good processing performance, low moisture absorption, low density, abundant raw material source, resistance to bending, kink resistance, moisture and heat resistance, easy to strip, and low cost.

The outside of the optical cable core is wrapped with a protective layer, which is arranged outside the casing. The protective layer is preferably a high-strength non-woven fabric. The high-strength non-woven fabric is double-wrapped around the outside of the optical cable core to increase the tensile strength and friction resistance of the optical cable core.

The implementation principle of a modified polypropylene insulated optoelectronic composite cable in the embodiment of the present application is as follows: the conductive body 7 includes a conductor 1 and an insulating layer 2. The conductor 1 is made of aluminum alloy, has excellent conductivity, and is relatively light, suitable for power transmission; the insulating layer 2 uses modified polypropylene insulating material, which has high heat resistance, mechanical strength, electrical insulation performance and chemical stability, which helps to ensure the stable transmission of electricity while preventing the influence of external humidity, chemicals or mechanical damage on the cable; the optical cable 3 is used for communication signal transmission, including optical fiber, fiber paste and casing. The optical fiber uses quartz glass or polyurethane acrylic coating and has excellent optical transmission performance. The fiber paste is filled between the optical fiber and the casing, which helps to maintain the stable position of the optical fiber and reduce mechanical stress. At the same time, it acts as an insulating material. The casing provides additional physical protection to prevent The optical fiber is protected from mechanical damage or moisture intrusion, thereby ensuring the stable transmission of communication signals; the sheath body 8 includes an oxygen insulation layer 4, an armor layer 5 and an outer sheath 6, providing multiple protective layers. The oxygen insulation layer 4 adopts low-smoke halogen-free flame-retardant polyolefin oxygen insulation material, which has flame retardant, heat-insulating and oxygen-isolating properties, and protects the internal conductive body 7 and optical cable 3. The armor layer 5 adopts an aluminum alloy strip to provide mechanical protection and bending resistance. The outer sheath 6 adopts an environmentally friendly polyolefin material equivalent to the insulating layer material, which is used to overall cover and protect the cable. The modified polypropylene insulated optoelectronic composite cable realizes the compatible transmission of power and communication signals through reasonable design and material selection, and provides power, optical and mechanical protection at all levels to ensure the reliability and performance of the cable, which is suitable for a variety of application scenarios such as communication networks and power systems.

The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A modified polypropylene insulated photoelectric composite cable, comprising a photoelectric composite cable body (10), characterized in that: the photoelectric composite cable body (10) comprises a plurality of conductive bodies (7), a plurality of optical cables (3) and a sheath body (8), the sheath body (8) being installed outside the conductive bodies (7) and the optical cables (3) to cover and connect the conductive bodies (7) and the optical cables (3); The sheath body (8) comprises an oxygen-isolating layer (4), an armor layer (5) and an outer sheath (6) which are radially stacked. The innermost circle of the sheath body (8) is provided with an oxygen-isolating layer (4) for covering a plurality of conductive bodies (7) and an optical cable (3). A sheath inner cavity (9) is provided inside the oxygen-isolating layer (4). The armor layer (5) is sleeved on the outer circumference of the oxygen-isolating layer (4) so that the armor layer (5) covers the oxygen-isolating layer (4). The outer sheath (6) is sleeved on the outer circumference of the armor layer (5) so that the outer sheath (6) covers the armor layer (5). The optical cable (3) is a communication optical cable, and the optical cable (3) comprises an optical fiber, a fiber paste and a sleeve, wherein the fiber paste is filled between the optical fiber and the sleeve. 2. A modified polypropylene insulated optoelectronic composite cable according to claim 1, characterized in that: a plurality of conductive bodies (7) and optical cables (3) are arranged in the inner cavity (9) of the sheath, the conductive bodies (7) are evenly distributed along the circumference of the inner cavity (9) of the sheath, the optical cables (3) are evenly distributed along the circumference of the inner cavity (9) of the sheath, and the optical cables (3) are located between two adjacent conductive bodies (7). 3. A modified polypropylene insulated optoelectronic composite cable according to claim 1, characterized in that: the conductive body (7) comprises a conductor (1) and an insulating layer (2), and the insulating layer (2) is located outside the conductor (1) so that the insulating layer (2) covers the conductor (1). 4. A modified polypropylene insulated photovoltaic composite cable according to claim 3, characterized in that the conductor (1) is made of aluminum alloy conductors twisted and pressed. 5. A modified polypropylene insulated photovoltaic composite cable according to claim 3, characterized in that: the insulating layer (2) is a modified polypropylene insulating material. 6. A modified polypropylene insulated photovoltaic composite cable according to claim 1, characterized in that the oxygen barrier layer (4) is a low-smoke, halogen-free, flame-retardant polyolefin oxygen barrier material. 7. A modified polypropylene insulated photovoltaic composite cable according to claim 1, characterized in that the armor layer (5) is an aluminum alloy belt interlocking armor. 8. A modified polypropylene insulated photovoltaic composite cable according to claim 1, characterized in that the outer sheath (6) is made of an environmentally friendly polyolefin material having a temperature resistance grade equivalent to that of the insulation layer material through extrusion.