CN107665751A - A kind of high intensity power communication cable - Google Patents

Abstract

The invention relates to a high-strength power communication cable, comprising one or more cable cores, fillers, flame-retardant and heat-insulating layers, and an outer protective layer; the flame-retardant and heat-insulating layer is wrapped on the periphery of one or more cable cores , the filler is located between the flame retardant heat insulation layer and one or more cable cores, the outer protective layer is wrapped around the outer periphery of the flame retardant heat insulation layer, and the cable core includes two conductors, tensile steel wire ropes and cable Core cladding layer; the two conductors are twisted with each other, the tensile steel wire rope is located on both sides of the conductor and parallel to the communication cable, and the cable core cladding layer is wrapped around the outer circumference of the two conductors and the tensile steel wire rope; the The conductor includes a soft copper wire, a shielding layer and an insulating layer; the shielding layer is wrapped on the outer periphery of the soft copper wire, and the insulating layer is wrapped on the outer periphery of the shielding layer; the present invention has excellent performance, complete functions, and good Excellent corrosion resistance, high temperature resistance, flame retardant, tensile, torsion resistance, and has good anti-signal interference ability.

Description

A high-strength power communication cable

technical field

The invention relates to the field of communication cables, in particular to a high-strength electric communication cable.

Background technique

Communication cables are cables for transmitting telephones, telegraphs, fax documents, TV and radio programs, data and other electrical signals. Compared with overhead open wires, communication cables have large communication capacity, high transmission stability, good confidentiality, and are less affected by natural conditions. and external interference effects.

Communication cables are usually composed of multiple insulated wires or conductors twisted into a cable core and an outer sheath that protects the cable core from moisture and mechanical damage. This simple structure consists of mutually insulated wires and an outer sheath Communication cables have many disadvantages, such as being unable to withstand severe external environment erosion; short service life and easy to break under frequent laying, pulling, bending and twisting; poor anti-signal interference ability, unable to meet the needs of high-end automation equipment demand and so on.

Contents of the invention

In view of the above problems, the present invention provides a high-strength power communication cable, which is corrosion-resistant, has good tensile and torsion resistance, high mechanical strength, and has good anti-signal interference ability.

A high-strength power communication cable provided by the present invention includes one or more cable cores, fillers, flame-retardant and heat-insulating layers, and an outer protective layer; the flame-retardant and heat-insulating layer is coated on the periphery of one or more cable cores , the filler is located between the flame retardant heat insulation layer and one or more cable cores, the outer protective layer is wrapped around the outer periphery of the flame retardant heat insulation layer, and the cable core includes two conductors, tensile steel wire ropes and cable Core cladding layer; the two conductors are twisted with each other, the tensile steel wire rope is located on both sides of the conductor and parallel to the communication cable, and the cable core cladding layer is wrapped around the outer circumference of the two conductors and the tensile steel wire rope; the The conductor includes a soft copper wire, a shielding layer and an insulating layer; the shielding layer is wrapped around the outer periphery of the soft copper wire, and the insulating layer is wrapped around the outer periphery of the shielding layer.

As a further optimization of the present invention, the filler is polytetrafluoroethylene.

As a further optimization of the present invention, the flame-retardant and heat-insulating layer is a fire-resistant mica tape.

As a further optimization of the present invention, the outer protective layer is high-density polyethylene.

As a further optimization of the present invention, the diameter of the soft copper wire is 1.2mm.

As a further optimization of the present invention, the shielding layer is a braided structure, and the coverage of the braided structure covering the soft wire copper wire is not less than 85%.

As a further optimization of the present invention, the insulating layer is silane cross-linked polyethylene.

As a further optimization of the present invention, the cable core covering layer is made of polyester material, and the cable core covering layer is double-layered.

The beneficial effects of the present invention are:

The invention has excellent performance, complete functions, good corrosion resistance, high temperature resistance, flame retardancy, tensile resistance, torsion resistance, and good signal interference resistance.

Description of drawings

Fig. 1 is a schematic structural view of a high-strength power communication cable of the present invention;

Among them, the outer protective layer 1, the flame retardant heat insulation layer 2, the filler 3, the cable core 4, the tensile steel wire rope 41, the cable core coating layer 42, the conductor 43, the insulating layer 431, the shielding layer 432, and the soft copper wire 433 .

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments.

As shown in Figure 1, a high-strength power communication cable provided by this embodiment includes one or more cable cores 4, fillers 3, flame-retardant and heat-insulating layers 2 and outer protective layers 1; The thermal layer 2 is wrapped on the outer periphery of one or more cable cores 4, and the filler 3 is located between the flame retardant heat insulation layer 2 and one or more cable cores 4; the outer protective layer 1 is wrapped on the flame retardant the outer periphery of the heat insulation layer 2; the cable core 4 includes two conductors 43, a tensile steel wire rope 41 and a cable core cladding layer 42; the two conductors 43 are twisted to each other, and the tensile steel wire rope 41 is located Side and parallel to the communication cable, the core cladding layer 42 is wrapped around the outer circumference of the two conductors 43 and the tensile steel wire rope 41; the conductor 43 includes a soft copper wire 433, a shielding layer 432 and an insulating layer 431; The shielding layer 432 is wrapped around the outer periphery of the soft copper wire 433 , and the insulating layer 431 is wrapped around the outer periphery of the shielding layer 432 .

Preferably, the filler 3 is polytetrafluoroethylene; since there is a gap between the cable core 4 and the flame-retardant heat insulation layer 2, filling the filler 3 in the gap can make the shape of the communication cable more regular and can also The internal structure is more compact and firm, and PTFE has the characteristics of not adhering to any substance and having a low friction coefficient, which makes it unnecessary to overcome the stress of too much PTFE when the communication cable is bent and twisted, making the cable The overall performance of is increased with no negative side effects.

Preferably, the flame-retardant and heat-insulating layer 2 is a fire-resistant mica tape, which has excellent high temperature resistance and combustion resistance, and usually also has good flexibility, and there will be no harmful smoke even if it encounters an open flame. Volatile; if necessary, phlogopite refractory mica tape can also be used, which can also resist electric shock.

Preferably, the outer protective layer 1 is high-density polyethylene, which has good corrosion resistance and insulation properties.

Preferably, the wire diameter of the soft copper wire 433 is 1.2 mm.

Preferably, the shielding layer 432 is a braided structure, and the coverage of the braided structure covering the soft copper wire 433 is not less than 85%, so as to ensure that the shielding effect meets the signal interference prevention requirements of high-end automation equipment. It should be noted that the coating in the present invention refers to a coverage rate of 100% unless otherwise specified.

Preferably, the insulating layer 431 is silane cross-linked polyethylene, which not only has good insulation performance, but also has good heat resistance and mechanical strength. The use of silane cross-linked polyethylene in conjunction with the tensile steel wire rope 41, Make this cable have high-strength performance.

Preferably, the cable core coating layer 42 is a polyester material, and the cable core coating layer 42 is double-layered. Since the tensile strength of the steel wire rope is relatively high, the double-layer polyester material coating effect is better and more firm. In this embodiment, setting the tensile steel wire rope in the cable core is equivalent to increasing the strength of each single conductor, so that the strength of the entire cable can be maximized.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (8)

1. A high-strength power communication cable, characterized in that it includes one or more cable cores, fillers, flame-retardant and heat-insulating layers, and outer protective layers; the flame-retardant and heat-insulating layers are coated on one or more The outer periphery of the cable core, the filler is located between the flame-retardant and heat-insulating layer and one or more cable cores, the outer protective layer is covered on the outer periphery of the flame-retardant and heat-insulating layer, and the cable core includes two conductors, tensile Steel wire rope and cable core coating; the two conductors are twisted with each other, the tensile steel wire rope is located on both sides of the conductor and parallel to the communication cable, and the cable core coating covers the outer circumference of the two conductors and the tensile steel wire rope ; The conductor includes a soft copper wire, a shielding layer and an insulating layer; the shielding layer is wrapped on the outer periphery of the soft copper wire, and the insulating layer is wrapped on the outer periphery of the shielding layer. 2. A high-strength power communication cable according to claim 1, wherein the filler is polytetrafluoroethylene. 3. A high-strength power communication cable according to claim 1, characterized in that, the flame-retardant and heat-insulating layer is a fire-resistant mica tape. 4. A high-strength power communication cable according to claim 1, wherein the outer protective layer is high-density polyethylene. 5 . A high-strength power communication cable according to claim 1 , wherein the diameter of the soft copper wire is 1.2 mm. 6 . The high-strength power communication cable according to claim 1 , wherein the shielding layer is a braided structure, and the coverage of the braided structure covering soft wires and copper wires is not less than 85%. 7. A high-strength power communication cable according to claim 1, wherein the insulating layer is silane cross-linked polyethylene. 8 . The high-strength power communication cable according to claim 1 , wherein the cable core covering layer is made of polyester material, and the cable core covering layer is double-layered.