CN202871396U - Ultra-shielding signal cable resisting electromagnetic pulse - Google Patents

Abstract

An anti-electromagnetic pulse super-shielded signal cable relates to the technical field of cables. The utility model comprises a cable core, on the outer side of the cable core, a first wrapping layer, an inner tinned copper wire braided mesh shielding layer, a nickel-iron alloy tape magnetic conduction layer, an outer tinned copper wire braided mesh shielding layer and an outer sheath layer are sequentially arranged. The cable core includes three wire cores, each wire core includes four mutually twisted insulated conductor groups, and a second wrapping layer is respectively arranged outside each of the four mutually twisted insulated conductor groups; each insulated conductor group Copper conductors are respectively included, and an insulating layer is respectively wrapped on the outside of each strand of copper conductors. The utility model has the advantages of simple and reasonable structure, easy manufacture, low cost, excellent thermal aging performance, high strength, good wear resistance, good flame retardancy, cold resistance, wide applicable environmental conditions, and can meet the requirements of strong electromagnetic fields against electromagnetic pulses. Requirements for the use of electronic and electrical systems with special requirements.

Description

Anti-electromagnetic pulse super-shielded signal cable

technical field

The utility model relates to the technical field of cables, in particular to the technical field of communication cables under extreme weather conditions such as severe electromagnetic interference in the field or frequent thunder and lightning on plateaus.

Background technique

With the continuous enhancement of the space electromagnetic field and the wide application of various high-tech precision control instruments, electromagnetic compatibility is very important. In many cases, it is because of the poor electromagnetic compatibility of the cable that the system malfunctions. Therefore, the electromagnetic compatibility of the cable is proposed. Very demanding. At present, the shielding layers of various cables such as control cables, computer cables, and power cables produced in my country generally use copper wire braided shielding, copper tape wrapping shielding, steel tape wrapping shielding, aluminum tape wrapping shielding, copper wire braiding and copper tape Wrapped shielding, etc., the shielding performance of this type of shielded cable can only resist general electromagnetic field interference, and aluminum tube or copper tube is used for shielding, although the shielding performance is slightly improved, but the flexibility is poor, and it can only be used in specified laying occasions. Due to the high manufacturing technology of this type of cable, high requirements for shielding performance and good cable flexibility, the design of shielding structure is difficult. At present, there is no super-shielded cable that can resist strong electromagnetic field interference or strong electromagnetic pulse and can meet the requirements of softness and easy laying.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an anti-electromagnetic pulse super-shielded signal cable with good performance in electromagnetic pulse resistance, good flexibility, good signal transmission performance, high strength and good temperature resistance.

The utility model comprises a cable core, on the outside of the cable core, a first wrapping layer, an inner tinned copper wire braided mesh shielding layer, a nickel-iron alloy tape magnetic conduction layer, an outer tinned copper wire braided mesh shielding layer and an outer shielding layer are sequentially arranged. Jacket layer; the cable core includes three wire cores, each wire core includes four mutually twisted insulated conductor groups, and a second wrapping layer is respectively arranged outside each of the four mutually twisted insulated conductor groups ; Each of the insulated conductor groups includes a copper conductor, and an insulating layer is wrapped on the outside of each strand of the copper conductor.

The insulation of the utility model adopts the cross-linked polyolefin material with excellent electrical insulation performance, excellent mechanical performance and low loss; the cabling adopts star twisted four wires to form a cable unit, concentric cabling, and uses high-strength polyester tape to wrap tightly; The sheath is made of matt polyurethane elastomer with cold resistance, softness, high strength, high wear resistance, low friction coefficient and high flame retardancy.

The utility model has the advantages of simple and reasonable structure, easy production and low cost, and the cable has small dielectric loss and good shielding performance, and its shielding transmission impedance is not greater than 1Ω/m in the range of 1000MHz and has excellent thermal aging performance, strength High, good wear resistance, good flame retardancy, cold resistance, wide application environment conditions, can meet the requirements of electronic and electrical systems with special requirements for resisting electromagnetic pulse and strong electromagnetic field.

Description of drawings

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

Detailed ways

As shown in Figure 1, the utility model includes a cable core, and the first wrapping layer 1, the inner tinned copper wire braided mesh shielding layer 2, the nickel-iron alloy strip magnetic layer 3, and the outer tinned copper wire are sequentially arranged outside the cable core. The braided mesh shielding layer 4 and the outer sheath layer 5; the cable core includes three wire cores 6, and each wire core 6 includes four mutually twisted insulated conductor groups 7, and each of the four mutually twisted insulated conductor groups 7 are respectively provided with a second wrapping layer 8; each insulated conductor group 7 includes a copper conductor 9, and an insulating layer 10 is respectively wrapped on the outside of each copper conductor 9.

Claims (1)

1. Anti-electromagnetic pulse super-shielded signal cable, characterized in that: it includes a cable core, and a first wrapping layer, an inner tinned copper wire braided mesh shielding layer, a nickel-iron alloy tape magnetically conductive layer, and an outer Tinned copper wire braid shielding layer and outer sheath layer; the cable core includes three wire cores, each wire core includes four mutually twisted insulated conductor groups, and each of the four mutually twisted A second wrapping layer is provided outside the insulated conductor groups; each of the insulated conductor groups includes a copper conductor, and an insulating layer is wrapped on the outside of each copper conductor.

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