CN201435245Y - Environment-friendly compound shielded control cable - Google Patents

Abstract

An environment-friendly composite screened control cable is characterized in that a conductor is formed by twisting one or a plurality of tin plated coppers; a silane crosslinked polyethylene insulating layer is extruded on the conductor so as to form insulated conductor cores; a plurality of insulated conductor cores are twisted to form a cable and an antiflaming glass fiber filling layer is arranged so as to form a cable conductor; and the cable conductor is externally provided with a lapping band layer, a composite shielding layer, a lining layer, a double-layer steel tape armour layer andan outer sheath layer in sequence, wherein the inner layer of the composite shielding layer is a tin plated copper weaving layer, and the outer layer thereof is a longitudinal lapping or lapping aluminum or copper-plastic cladding strip layer. The environment-friendly composite screened control cable has excellent electrical property and mechanical property, and antiflaming property, is heat resisting, environment-friendly, soft and anti-interference.

Description

Environment-friendly compound shielded control cable

technical field

The utility model relates to a control cable for electrical equipment, in particular to an environment-friendly composite shielding control cable, which belongs to the technical field of electric wires and cables.

Background technique

Control cables are mainly used in the control loop between electrical equipment, as the connection line between various electrical instruments and automation devices, and play the role of transmitting various electric energy or control signals, so that the entire electrical system can be operated safely and reliably. With the increasing degree of automation of electrical equipment and the emphasis on environmental protection, it is required that the control cables of the connecting lines between electrical instruments and automation devices have properties such as flame retardancy, high temperature resistance, environmental protection, softness, and anti-interference. Ensure electrical performance and mechanical excellence and other requirements.

At present, the anti-electromagnetic interference shielding layer adopted by the control cable adopts the structure of aluminum/plastic composite tape longitudinal lap joint, copper wire or tinned copper wire braided mesh, and copper tape wrapping.

The aluminum/plastic composite tape has a good shielding effect and low manufacturing cost. However, due to the thin thickness of the aluminum layer, the two sides of the longitudinal wrap are not tight after the overlap, and the electromagnetic wave will pass through the gap and leak. The suppression coefficient is not high, and the application field is limited; the copper wire or tinned copper wire braid has poor sealing performance, the shielding effect is not ideal, and the manufacturing efficiency is low and the cost is high; the copper tape shielding flexibility is poor.

Utility model content

The utility model is to avoid the disadvantages of the above-mentioned prior art and provide an environment-friendly composite shielding control cable with excellent electrical and mechanical properties, flame retardant, high temperature resistance, environmental protection, softness and anti-interference.

The utility model adopts the following technical solutions:

The structural feature of the utility model environment-friendly compound shielding control cable is that the conductor is single or twisted with multiple tinned copper wires, and the conductor is extruded with a silane cross-linked polyethylene insulating layer to form an insulating core; The cores are twisted into cables and the flame-retardant glass fiber filling layer is set to form the cable core; the wrapping tape layer, composite shielding layer, inner lining layer, double-layer steel tape armor layer and outer sheathing layer are arranged in sequence outside the cable core. Jacket layer; the inner layer of the composite shielding layer is a braided layer of tinned copper wire, and the outer layer is an aluminum or copper-plastic composite tape layer wrapped longitudinally or wrapped around.

The structural features of the utility model also lie in that: the tape layer is made of strip-shaped polyester; Polyolefins are extruded materials.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The insulation layer of the utility model adopts silane cross-linked polyethylene insulation material, which has high insulation resistance and small dielectric loss. The maximum long-term allowable temperature of the conductor can reach 90°C. The material is easy to obtain, convenient to process, and the most cost-effective;

2. The shielding layer of this utility model adopts tinned copper wire braided shielding and aluminum (copper) plastic longitudinal wrapping or wrapping to form a composite shielding layer, the shielding effect is good, and the cable is softer; at the same time, the tinned copper wire is more resistant than the bare copper wire. The corrosion resistance is better, which ensures the electrical stability of the contact between the electrical appliance and the cable;

3. In the utility model, the tape layer adopts polyester tape material. On the one hand, it has high strength performance, which plays a role in wrapping the insulated wire core. Electrical performance;

4. The double-steel tape armor layer in the utility model plays a role of mechanical protection and anti-magnetic interference;

5. The inner lining layer and the outer sheath layer of the utility model adopt low-smoke, halogen-free flame-retardant polyolefin sheath material or TPU elastomer material, which is environmentally friendly, safe, recyclable and reusable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of another embodiment of the present invention.

Symbols in the figure: 1 conductor, 2 insulation layer, 3 filling layer, 4 tape layer, 5 composite shielding layer, 6 inner lining layer, 7 double-layer steel tape armor layer, 8 outer sheath.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Detailed ways

Example 1:

This embodiment is a four-core cable, the conductor 1 is a single wire or multiple tinned copper wires twisted together, and a silane cross-linked polyethylene insulating layer is extruded on the conductor 1 to form the insulated core 2; it consists of four insulated cores 2 Twisting into a cable and setting an appropriate amount of flame-retardant glass fiber filling layer 3 to form a cable core; wrapping tape layer 4, composite shielding layer 5, inner lining layer 6, and double-layer steel tape armoring in sequence outside the cable core Layer 7 and outer jacket layer 8.

In specific implementation, the inner layer of the composite shielding layer 5 is a braided layer of tinned copper wire, and the outer layer is an aluminum or copper-plastic composite tape layer wrapped vertically or wrapped around; the tape layer 4 is a polyester strip material; the inner lining Layer 6 and outer sheath layer 8 can be made of TPU elastomer material or low-smoke, halogen-free, flame-retardant polyolefin extrusion process.

Example 2:

The difference from the first embodiment above is that the present embodiment is composed of seven insulated wire cores 2 twisted to form a cable core, and the other structural forms are the same as those of the first embodiment.

Claims (3)

1. Environment-friendly compound shielded control cable, characterized in that the conductor (1) is made of single or twisted tinned copper wires, and the conductor (1) is extruded with a silane cross-linked polyethylene insulating layer to form an insulated core (2); A cable core is formed by twisting a plurality of insulated wire cores (2) and a flame-retardant glass fiber filling layer (3); outside the cable core, a wrapping tape layer (4) is sequentially arranged , composite shielding layer (5), inner liner (6), double-layer steel tape armor layer (7) and outer sheath layer (8); the inner layer of the composite shielding layer (5) is tinned copper wire Braiding layer, the outer layer is aluminum or copper-plastic composite tape layer wrapped longitudinally or wrapped around. 2. The environment-friendly composite shielded control cable according to claim 1, characterized in that the tape layer (4) is made of strip-shaped polyester material. 3. The environment-friendly composite shielded control cable according to claim 1, characterized in that the inner lining layer (6) and the outer sheath layer (8) are extruded with TPU elastomer, or made of low-smoke Halogen-free flame-retardant polyolefin is extruded material.

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