CN204440922U - A kind of Aero-Space high-strength light cable - Google Patents

Abstract

The utility model discloses a high-strength light cable for aerospace, which comprises a cable core composed of multiple wire cores, an isolation layer, a shielding layer and a sheath layer. The wire cores are sequentially coated with insulating materials and plating The nickel-copper conductor is wrapped around, and a strengthening core is arranged in the gap between the cable core and the isolation layer; the shielding layer is extruded outside the isolation layer, and the sheath layer is extruded outside the shielding layer. The utility model is simple in structure and has excellent performances such as ultra-high strength, high modulus, high temperature resistance, acid resistance, alkali resistance and light weight. It can fully meet the requirements of large bearing capacity, light weight and small volume.

Description

A high-strength light cable for aerospace

technical field

The utility model relates to cables, in particular to a high-strength light cable for aerospace.

Background technique

With the rapid development of the aerospace field, higher requirements are placed on the use of wires and cables. In addition to meeting the requirements of electrical properties, it also needs to meet the requirements of light weight, small diameter, large bearing capacity, high temperature resistance and good wear resistance. The existing conventional products can no longer meet the above requirements.

Utility model content

In order to make up for the existing technical problems, the purpose of this utility model is to provide a high-strength light cable for aerospace with reasonable structure, light weight, large bearing capacity, wear resistance, and radiation resistance.

In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

A high-strength light cable for aerospace, including a cable core composed of multiple wire cores, an isolation layer, a shielding layer and a sheath layer, and the wire cores are wrapped with insulating materials and nickel-plated copper conductors in turn from outside to inside As a result, a strengthening core is arranged in the gap between the cable core and the isolation layer; the shielding layer is arranged outside the isolation layer, and the sheath layer is extruded outside the shielding layer.

The nickel-plated copper conductor is a concentrically stranded nickel-plated copper conductor, and the twisting pitch ratio is not more than 16 times. The insulating material is made by compounding meta-aramid paper and polyester film. The reinforcing core is aramid fiber filament. The isolation layer is polyester film. The shielding layer is braided with nickel-plated flat copper wires. The sheath layer is made of radiation cross-linked ETFE.

The beneficial effects of the utility model are:

The utility model has a simple structure, and the conductor adopts a concentrically stranded nickel-plated copper conductor, which can be used in occasions where the long-term working temperature does not exceed 260°C and the mechanical strength is high. The insulating material is a composite material made of meta-aramid paper and polyester film, which has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid resistance, alkali resistance, and light weight. Its strength is 5-6 times that of steel wire , the modulus is 2-3 times that of steel wire or glass fiber wire, its toughness is 2 times that of steel wire, but its weight is only 1/5 of steel wire, and it does not decompose or melt at a temperature of 560°C. The use of aramid fiber filaments as the reinforcing core can fully meet the requirements of large bearing capacity, light weight and small volume. The nickel-plated flat copper wire braided shielding layer used has improved shielding effect compared with round wire braided, and more importantly, on the basis of ensuring product performance, it further reduces the weight of the product and reduces the size of the product. volume of. The sheath layer is made of radiation cross-linked ETFE material. Through irradiation, the original linear molecular structure is transformed into a three-dimensional network structure, which improves the temperature resistance level of the product. At the same time, the specific gravity of the material is only 1.73, which has excellent mechanical properties. Wear-resistant, bending-resistant, stress-crack-resistant, no pollution, good chemical stability, and resistant to various aerospace oils and liquids.

Description of drawings

Fig. 1: Schematic diagram of the structure of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1: a high-strength light cable for aerospace, including a cable core composed of three wire cores, an isolation layer 4, a shielding layer 5 and a sheath layer 6, and the wire cores are insulated from the outside to the inside. The material 2 and the nickel-plated copper conductor 1 are wrapped, and three reinforcing cores 3 are arranged in the gap between the cable core and the isolation layer 4, and the reinforcing cores 3 are arranged at intervals from the wire core; the shielding The layer 5 is arranged outside the isolation layer 4 , and the sheath layer 6 is extruded outside the shielding layer 5 .

Preferably, the nickel-plated copper conductor 1 is concentrically stranded nickel-plated copper conductor 1, and the twisting pitch ratio is not more than 16 times. The concentrically stranded nickel-plated copper conductor 1 can be used in occasions where the long-term working temperature does not exceed 260°C and the mechanical strength is high.

Preferably, the insulating material 2 is made of meta-aramid paper and polyester film. Insulation material 2 is a composite material made of meta-aramid paper and polyester film, which has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid resistance, alkali resistance, and light weight. Its strength is 5-6 times that of steel wire times, the modulus is 2-3 times that of steel wire or glass fiber wire, its toughness is twice that of steel wire, but its weight is only 1/5 of that of steel wire, and it does not decompose or melt at a temperature of 560°C.

Preferably, the reinforcing core 3 is aramid fiber filament. The use of aramid fiber filaments as the reinforcing core 3 can fully meet the requirements of large bearing capacity, light weight and small volume.

Preferably, the isolation layer 4 is a polyester film.

Preferably, the shielding layer 5 is braided by nickel-plated flat copper wires. The nickel-plated flat copper wire braided shielding layer 5, compared with the round wire braid, has improved the shielding effect, and more importantly, on the basis of ensuring product performance, it further reduces the weight of the product and reduces the The volume of the product.

Preferably, the sheath layer 6 is made of radiation cross-linked ETFE. The sheath layer 6 is made of radiation cross-linked ETFE material. Through irradiation, the original linear molecular structure is transformed into a three-dimensional network structure, which improves the temperature resistance level of the product. At the same time, the specific gravity of the material is only 1.73, which has excellent mechanical properties. Performance, wear resistance, bending resistance, stress cracking resistance, no pollution, good chemical stability, and resistance to various aerospace oils and liquids.

The utility model has been described as an example in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as the method concept and technical solution of the utility model are used for this insubstantial improvement, or without Improvements that directly apply the ideas and technical solutions of the utility model to other occasions are all within the protection scope of the utility model.

Claims (7)

1. A high-strength light cable for aerospace, including a cable core composed of multiple wire cores, an isolation layer (4), a shielding layer (5) and a sheath layer (6), characterized in that: the wire The core is sequentially wrapped with insulating material (2) and nickel-plated copper conductor (1) from outside to inside, and a strengthening core (3) is set in the gap between the cable core and the isolation layer (4); The shielding layer (5) is arranged outside the isolation layer (4), and the sheath layer (6) is extruded and wrapped outside the shielding layer (5). 2. A high-strength light-duty cable for aerospace according to claim 1, characterized in that: the nickel-plated copper conductor (1) is a concentrically stranded nickel-plated copper conductor (1), and the stranding pitch is The ratio is not more than 16 times. 3. A high-strength light cable for aerospace according to claim 1, characterized in that: the insulating material (2) is made of meta-aramid paper and polyester film. 4. A high-strength light cable for aerospace use according to claim 1, characterized in that: the reinforcing core (3) is aramid fiber. 5. A high-strength light cable for aerospace according to claim 1, characterized in that: the isolation layer (4) is a polyester film. 6. A high-strength light cable for aerospace use according to claim 1, characterized in that: the shielding layer (5) is braided by nickel-plated flat copper wire. 7. A high-strength lightweight cable for aerospace use according to claim 1, characterized in that: the sheath layer (6) is made of radiation cross-linked ETFE.