CN213844870U

CN213844870U - Special high-energy electromagnetic pulse resistant composite cable

Info

Publication number: CN213844870U
Application number: CN202022634325.9U
Authority: CN
Inventors: 贾鹏翔; 赵忠祥; 席铭铭; 管雨娟
Original assignee: Jiangsu Hengtong Electronic Cable Technology Co Ltd
Current assignee: Jiangsu Hengtong Electronic Cable Technology Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-30
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses an anti high energy electromagnetic pulse special type composite cable, include cable core, shielding layer and the restrictive coating that forms by two piece at least sinle silk transposition, the shielding layer includes first copper foil layer, first alloy-layer, second copper foil layer, second alloy-layer and third copper foil layer by inside to outside in proper order. The insulating layer and the sheath layer adopt high-performance thermoplastic elastomer TPV. The utility model discloses to traditional anti high energy electromagnetic pulse cable carry out optimization, the improvement of material and structure, it is not good to solve traditional cable electromagnetic shield effect, and the cable is harder, bending force is big to and cable weight is heavy and easily receive the exogenic action damage scheduling problem. The shielding effectiveness of the cable of the utility model can reach more than 70 db; the flexibility is good, and the bending performance is high; the cable is light in weight, and the weight is reduced by 10-15%; the cable has excellent mechanical property, can bear the action of external force without being damaged, and improves the use safety and the service life of the cable. Fully meeting the increasing requirements of modern weaponry systems against electromagnetic pulse cables.

Description

Special high-energy electromagnetic pulse resistant composite cable

Technical Field

The utility model relates to a cable field, in particular to anti high energy electromagnetic pulse special type composite cable.

Background

With the rapid development of the current science and technology and the urgent need of the development and construction of national defense modernization in China, the communication industry is developing towards high technology and high speed. The technical level of the communication industry represents and symbolizes the national defense strength, in order to meet the requirement of the high-speed development of the national defense modernization, the matched products are continuously updated, the electrification, automation and systematization degree of the equipment is continuously improved, the use amount of the cable used as the blood vessel and nerve is increasingly large, and the higher requirements on the quality level and the safety and the reliability of the product are provided. Nowadays, the communication industry is developed vigorously, and the development of high-performance cables has important functions and significance for meeting the requirement of the modernization of national defense and meeting the high-speed development.

The rapid development of electronic technologies such as aerospace, ground vehicles and the like and the continuous improvement of integrated informatization technologies, electronic information safety is increasingly emphasized in modern technologies. Under the condition of fully utilizing a microelectronic program control technology, the modern equipment system achieves high informatization and intelligence. However, the micro-electronic program control system is very vulnerable to the interference impact of the external electromagnetic field, so the electromagnetic protection is very important.

The research on how to resist the high-energy electromagnetic pulse becomes the key point of the research of scholars at home and abroad. In recent years, the research on the anti-electromagnetic pulse cable is developing towards the direction of light weight, miniaturization, flexibility, high strength and higher anti-high-energy electromagnetic interference. The common high-energy electromagnetic pulse resistant cable generally adopts fluoroplastic as an insulating layer material, a tinned copper wire woven structure, a silvered copper wire woven structure or an aluminum-plastic composite tape wrapped structure is used as a shielding layer, and polyurethane is used as a sheath structure.

From this, it is the research topic of the utility model to obtain a special type composite cable that anti high energy electromagnetic interference nature is stronger.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti high energy electromagnetic pulse special type composite cable, the unable problem that satisfies the demand of performance that its purpose will solve current special type composite cable.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides an anti high energy electromagnetic pulse special type composite cable which characterized in that: the cable comprises a cable core formed by stranding at least two wire cores, a shielding layer and a sheath layer;

each wire core comprises a conductor and an insulating layer tightly coated on the periphery of the conductor; the shielding layer is tightly coated on the periphery of the cable core, the shielding layer sequentially comprises a first copper foil layer, a first alloy layer, a second copper foil layer, a second alloy layer and a third copper foil layer from inside to outside, the first copper foil layer, the second copper foil layer and the third copper foil layer are all copolymer type double-sided copper-plastic composite belts, the first alloy layer is copper-iron alloy wires which are uniformly woven in a crossed mode, the second alloy layer is iron-nickel alloy wires which are uniformly woven in a crossed mode, the first copper foil layer is wrapped on the insulating layer through a longitudinal wrapping embossing process, the first alloy layer is tightly wrapped on the first copper foil layer, the second copper foil layer is wrapped on the first alloy layer through a longitudinal wrapping embossing process, the second alloy layer is tightly wrapped on the second copper foil layer, the third copper foil layer is wrapped on the second alloy layer through a longitudinal wrapping embossing process, and the sheath layer is tightly wrapped on the shielding layer;

the insulating layer and the sheath layer are made of thermoplastic elastomer materials.

1. In the scheme, the copper-iron alloy is CuFe 5.

2. In the scheme, the weaving density of the copper-iron alloy wires is 90-95%.

3. In the scheme, the weaving density of the iron-nickel alloy wires is 90-95%.

The related explanation of the utility model is as follows:

1. the copper foil of shielding layer is the compound area of copolymerization type two-sided copper plastics (this is commercial material, and here is not repeated), and the two-sided copper layer has improved the holistic anti high energy electromagnetic pulse performance of cable, through indulging package embossing technology promote the cable receive external force when tensile compression strength and bending property, solved the cable receive external force effect fragile and around package technology make the cable harden, the not easy problem of bending.

2. The copper-iron alloy wire is a CuFe5 soft-state high-conductivity copper-iron alloy wire, and the iron-nickel alloy wire is a high-permeability iron-nickel alloy wire.

3. The conductor is made of silver-plated silver-copper alloy wires through small-pitch stranding; the insulating layer wraps the outside of the conductor and is extruded into an insulating wire core. Two sinle silks adopt back twist stranding equipment transposition, and the stranding pitch is 80 + -5 mm, and the packing adopts the netted filling rope of non-hygroscopicity, adopts non-hygroscopicity band around the covering, has guaranteed the circularity and the homogeneity of stranding sinle silk. This is the prior art and will not be described herein.

4. The sheath layer and the insulation layer are extruded from a thermoplastic elastomer material (e.g., TPV).

The utility model has the advantages that:

(1) the utility model discloses a shielding layer adopts the compound shielding layer that comprises copper foil, copper-iron alloy, copper foil, iron-nickel alloy and copper foil. The shielding function of the shielding layer to the electromagnetic field has two functions, the first function is that the energy of the electromagnetic field generates eddy current when passing through the shielding layer and becomes heat to be consumed; the second mode is that the energy of the electromagnetic field is consumed by the reflection action of the shielding layer and the interface formed by the shielding layer with the metal material with different impedance characteristics. According to the principle, a plurality of metal materials and non-metals made of different materials are used as medium materials during the design of the shielding layer, and a comprehensive shielding body is combined according to specific requirements. The materials and the arrangement sequence (from inside to outside) of the five-layer shield are determined through repeated experimental verification: the copper foil wrapping, the copper-iron alloy weaving, the copper foil wrapping, the iron-nickel alloy weaving and the copper foil wrapping form five reflecting surfaces and two absorbing layers, and the optimal shielding effect can be achieved. The shielding effectiveness of the cable reaches the requirement of more than or equal to 70 db.

(2) The copper foil of the shielding layer is optimized to be a grain-binding longitudinal wrapping process through a common wrapping process, so that the problem that the whole cable is hardened due to wrapping is avoided, the flexibility of the cable is greatly improved, and the bending performance is good; and the insulating and sheathing material adopts thermoplastic TPV elastomer, which has high elasticity and flexibility (Shore A75 +/-2) of rubber, thereby further improving the bending property of the cable.

(3) The optimal combination and sequencing of the shielding layers ensure that the weight of the shielding layer material is the lightest when the cable achieves the same shielding effect; the insulating and sheath material is a thermoplastic elastomer, and has lower density compared with fluoroplastic and polyurethane; the whole weight of the cable is reduced by 10-15%.

(4) The shielding layer copper foil adopts a grain-binding longitudinal wrapping process, so that the problem that the cable is damaged due to tensile and compression deformation caused by external force is greatly improved; the high-performance thermoplastic elastomer sheath has excellent mechanical properties, the tensile strength is more than or equal to 25MPa, and the elongation at break is 500-600%; the cable has excellent overall mechanical property, the safety in the use process of the cable is improved, and the service life of the cable is prolonged.

Drawings

FIG. 1 is a schematic cross-sectional view of the high-energy electromagnetic pulse resistant special composite cable of the present invention;

in the above drawings: 1. a wire core; 11. a conductor; 12. an insulating layer; 2. a shielding layer; 21. a first copper foil layer; 22. a first alloy layer; 23. a second copper foil layer; 24. a second alloy layer; 25. a third copper foil layer; 3. a sheath layer.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): special high-energy electromagnetic pulse resistant composite cable

As shown in the figure, the special high-energy electromagnetic pulse resistant comprehensive cable is characterized in that: the cable comprises a cable core formed by twisting at least two wire cores 1, a shielding layer 2 and a sheath layer 3;

each wire core 1 comprises a conductor 11 and an insulating layer 12 tightly wrapped on the periphery of the conductor 11; the shielding layer 2 is tightly wrapped on the periphery of the cable core 1, the shielding layer 2 sequentially comprises a first copper foil layer 21, a first alloy layer 22, a second copper foil layer 23, a second alloy layer 24 and a third copper foil layer 25 from inside to outside, the first copper foil layer 21, the second copper foil layer 23 and the third copper foil layer 25 are copolymer type double-sided copper-plastic composite tapes, the first alloy layer 22 is a copper-iron alloy wire which is uniformly woven in a crossed mode, the second alloy layer 24 is an iron-nickel alloy wire which is uniformly woven in a crossed mode, the first copper foil layer 21 is wrapped on the insulating layer 12 through a longitudinal wrapping embossing process, the first alloy layer 22 is tightly wrapped on the first copper foil layer 21, the second copper foil layer 23 is wrapped on the first alloy layer 22 through a longitudinal wrapping embossing process, the second alloy layer 24 is tightly wrapped on the second copper foil layer 23, and the third copper foil layer 25 is wrapped on the second alloy layer 24 through a longitudinal embossing process, the sheath layer 3 is tightly coated on the shielding layer 2;

the insulating layer 12 and the sheath layer 3 are made of thermoplastic elastomer TPV.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an anti high energy electromagnetic pulse special type composite cable which characterized in that: comprises a cable core formed by twisting at least two wire cores (1), a shielding layer (2) and a sheath layer (3);

each wire core (1) comprises a conductor (11) and an insulating layer (12) tightly coated on the periphery of the conductor (11); the shielding layer (2) is tightly wrapped on the periphery of the cable core, the shielding layer (2) sequentially comprises a first copper foil layer (21), a first alloy layer (22), a second copper foil layer (23), a second alloy layer (24) and a third copper foil layer (25) from inside to outside, the first copper foil layer (21), the second copper foil layer (23) and the third copper foil layer (25) are copolymer type double-sided copper-plastic composite belts, the first alloy layer (22) is a copper-iron alloy wire which is uniformly woven in a crossed mode, the second alloy layer (24) is an iron-nickel alloy wire which is uniformly woven in a crossed mode, the first copper foil layer (21) is wrapped on the insulating layer (12) through a longitudinal wrapping embossing process, the first alloy layer (22) is tightly wrapped on the first copper foil layer (21), the second copper foil layer (23) is wrapped on the first alloy layer (22) through a longitudinal wrapping embossing process, and the second alloy layer (24) is tightly wrapped on the second copper foil layer (23), the third copper foil layer (25) is wrapped on the second alloy layer (24) through a longitudinal wrapping embossing process, and the sheath layer (3) is tightly wrapped on the shielding layer (2);

the insulating layer (12) and the sheath layer (3) are made of thermoplastic elastomer materials.

2. The special high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the copper-iron alloy is CuFe 5.

3. The special high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the weaving density of the copper-iron alloy wires is 90% -95%.

4. The special high-energy electromagnetic pulse resistant composite cable according to claim 1, characterized in that: the weaving density of the iron-nickel alloy wires is 90-95%.