Environment-friendly copper-aluminum composite cable and production method thereof

Abstract

The invention relates to an environment-friendly copper-aluminum composite cable. The environment-friendly copper-aluminum composite cable is characterized in that a conductor consists of a copper conductor and an aluminum conductor, a wrapping tape is arranged outside an insulating layer, a main line of the conductor is made of a copper neutral line, an earthing line of the conductor is made of the aluminum conductor, and a waterproof layer is arranged between the conductor and the insulating layer. When the cable is used, the conductor consists of the copper conductor and the aluminum conductor, a sheath layer is made of low-smoke zero-halogen polyolefin materials, and in the use process, not only can the requirement of electric power operation be met, but also the material cost can be lowered, copper materials are saved, the recycling of waste cables are facilitated, the transportation cost is lowered at the same time, and the construction is also more convenient.

Description

technical field

[0001] The invention relates to the technical field of cables, in particular to a copper-aluminum composite environmental protection cable and a manufacturing method thereof. Background technique

[0002] The cables currently on the market are generally common copper cables. The inner core of this cable is made of pure copper. Since the price of copper tends to rise, the production cost of this cable is relatively high. In the prior art, in order to improve the environmental protection performance of cables, some flame retardant materials are generally added to the polymer materials used in the manufacture of cable insulation and sheathing, such as adding antimony trioxide, chlorinated paraffin and other flame retardants to improve the performance of the materials. Flame retardant properties, but the addition of these fillers is limited, adding too much will affect the electrical and mechanical properties of the cable. In actual use, although these filling m...

Examples

Embodiment 1

[0015] The conductor adopts four cores (that is, three cores are the main wire and one core is the ground wire, see figure 1 ), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking yarn, and the sheath layer is made of low-smoke halogen-free polyolefin material. It has the characteristics of low smoke, halogen-free, low corrosion and low toxicity.

[0016] The specific steps of making the cable are as follows: a. Put 8 copper single wires or 8 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, burrs, etc. th...

Embodiment 2

[0018] The conductor adopts five cores (that is, three cores are the main wire, one core is the ground wire, and one core is the neutral wire), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking powder, and the sheath layer is made of low-smoke halogen-free polyolefin material. Low smoke, halogen-free, low corrosion and low toxicity and other characteristics.

[0019] The specific steps of making the cable are as follows: a. Put 4 copper single wires or 4 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, b...

Embodiment 3

[0021] The conductor adopts five cores (that is, three cores are the main wire, one core is the ground wire, and one core is the neutral wire), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking yarn, and the sheath layer is made of low-smoke halogen-free polyolefin material. It has the characteristics of low smoke, halogen-free, low corrosion and low toxicity.

[0022]The specific steps of making the cable are as follows: a. Put 6 copper single wires or 6 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, ...

technical field

[0001] The invention relates to the technical field of cables, in particular to a copper-aluminum composite environmental protection cable and a manufacturing method thereof. Background technique

[0002] The cables currently on the market are generally common copper cables. The inner core of this cable is made of pure copper. Since the price of copper tends to rise, the production cost of this cable is relatively high. In the prior art, in order to improve the environmental protection performance of cables, some flame retardant materials are generally added to the polymer materials used in the manufacture of cable insulation and sheathing, such as adding antimony trioxide, chlorinated paraffin and other flame retardants to improve the performance of the materials. Flame retardant properties, but the addition of these fillers is limited, adding too much will affect the electrical and mechanical properties of the cable. In actual use, although these filling m...

Examples

Embodiment 1

[0015] The conductor adopts four cores (that is, three cores are the main wire and one core is the ground wire, see figure 1 ), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking yarn, and the sheath layer is made of low-smoke halogen-free polyolefin material. It has the characteristics of low smoke, halogen-free, low corrosion and low toxicity.

[0016] The specific steps of making the cable are as follows: a. Put 8 copper single wires or 8 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, burrs, etc. th...

Embodiment 2

[0018] The conductor adopts five cores (that is, three cores are the main wire, one core is the ground wire, and one core is the neutral wire), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking powder, and the sheath layer is made of low-smoke halogen-free polyolefin material. Low smoke, halogen-free, low corrosion and low toxicity and other characteristics.

[0019] The specific steps of making the cable are as follows: a. Put 4 copper single wires or 4 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, b...

Embodiment 3

[0021] The conductor adopts five cores (that is, three cores are the main wire, one core is the ground wire, and one core is the neutral wire), the main wire is made of copper, and the ground wire of the conductor is made of aluminum conductor. The conductor is provided with an insulating layer, a wrapping tape and a sheath layer in sequence, and a water-blocking layer is arranged between the conductor and the insulating layer. The water-blocking layer is made of water-blocking yarn, and the sheath layer is made of low-smoke halogen-free polyolefin material. It has the characteristics of low smoke, halogen-free, low corrosion and low toxicity.

[0022]The specific steps of making the cable are as follows: a. Put 6 copper single wires or 6 aluminum single wires into the tube stranding machine for conductor stranding to make a conductor. The surface of the copper and aluminum single wires should be smooth and round without oil stains or scratches. Any defects such as scratches, ...

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