Kevlar fiber double-shielding cable

Abstract

The utility model provides a Kevlar fiber double-shielding cable, and belongs to the technical field of wires and cables. The cable solves the problem that the cable in the prior art is not good enough in tensile property. The cable comprises an outer sheath layer and two shielding cables, the outer sheath layer is sleeved on the peripheries of the shielding cables, a filling cavity is formed between the outer sheath layer and the shielding cables, a plurality of strip-shaped corrugated pipes are arranged in the filling cavity, each shielding cable comprises an inner sheath layer, a cable core, a Kevlar fiber strip and a metal foil layer, and the inner sheath layer is sleeved on the outer sheath layer. The inner sheath layer is sleeved and fixed on the outer side of the metal foil layer, the number of the cable cores is multiple, the cable cores are arranged in the metal foil layer, the number of the Kevlar fiber rods is multiple, and the Kevlar fiber rods are arranged in the inner sheath layer. The cable provided by the utility model has the advantages of good tensile property and good fire resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric wires and cables and relates to a Kevlar fiber double-shielded cable. Background Art

[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. With the rapid development of underground power cable laying projects, higher requirements are placed on cable protection.

[0003] A Chinese patent with publication number CN216980217U discloses a cable, comprising: a conductor and a conductor shielding layer, the conductor shielding layer is wrapped on the outside of the conductor; an insulating component is wrapped on the outside of the conductor shielding layer; a semi-conductive buffer water-blocking layer is wrapped on the outside of the insulating component; an optical fiber component is arranged in the semi-conductive buffer water-blocking layer, the semi-conductive buffer water-blocking layer comprises a first semi-conductive buffer water-blocking tape and a second semi-conductive buffer water-blocking tape, the first semi-conductive buffer water-blocking tape and the second semi-conductive buffer water-blocking tape are arranged at intervals, the optical fiber component is arranged in the gap between the first semi-conductive buffer water-blocking tape and the second semi-conductive buffer water-blocking tape, the cable is provided with a metal sheath wrapped on the outside of the semi-conductive buffer water-blocking layer and a fire-resistant layer wrapped on the outside of the metal sheath, a hot-melt adhesive coating layer is arranged on the outside of the metal sheath, and the fire-resistant layer is fixed to the metal sheath through the hot-melt adhesive coating layer.

[0004] The patent provides a cable that is fire-resistant and water-resistant, but lacks tensile strength and is easily affected by external forces during use. Utility Model Content

[0005] The utility model aims to provide a Kevlar fiber double-shielded cable in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a Kevlar fiber double-shielded cable, comprising an outer sheath layer and a shielded cable, the number of the shielded cables is two, the outer sheath layer is sleeved on the outer circumference of the shielded cable, a filling cavity is formed between the outer sheath layer and the shielded cable, a plurality of strip-shaped corrugated tubes are arranged in the filling cavity, the shielded cable comprises an inner sheath layer, a cable core, a Kevlar fiber strip and a metal foil layer, the inner sheath layer is sleeved and fixed on the outer side of the metal foil layer, the number of the cable cores is several and the cable cores are arranged inside the metal foil layer, the number of the Kevlar fiber strips is several and the Kevlar fiber strips are arranged inside the inner sheath layer.

[0007] In the above-mentioned Kevlar fiber double-shielded cable, the corrugated tube fills the filling cavity.

[0008] In the above-mentioned Kevlar fiber double-shielded cable, the material of the cable core is tinned copper wire.

[0009] In the above-mentioned Kevlar fiber double-shielded cable, the Kevlar fiber strip is installed at the center of the cable core.

[0010] Compared with the prior art, the Kevlar fiber double-shielded cable provided by the utility model has the following beneficial effects: 1. By arranging a Kevlar fiber strip at the center of the cable core, the Kevlar fiber strip has the advantages of high strength, good heat resistance stability, and good electrical insulation performance. The addition of the Kevlar fiber strip makes the utility model have better tensile resistance, heat resistance and insulation; 2. By filling the filling cavity with a corrugated tube, when in use, the corrugated tube plays a role of supporting the outer sheath layer, so that the shielded cable inside the utility model is protected from external forces, and the corrugated tube can increase the strength and toughness of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.

[0012] In the figure: 1, outer sheath layer; 2, shielded cable; 21, inner sheath layer; 22, cable core; 23, Kevlar fiber strip; 24, metal foil layer; 3, corrugated tube; 4, filling cavity. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figure 1 As shown, this embodiment includes an outer sheath layer 1 and a shielded cable 2, both of which are in the shape of round tubes. There are two shielded cables 2, which are placed inside the outer sheath layer 1. A filling cavity 4 is formed between the inner wall of the outer sheath layer 1 and the outer wall of the shielded cable 2. A plurality of strip-shaped corrugated tubes 3 are arranged in the filling cavity 4. The corrugated tubes 3 fill the filling cavity. The corrugated tubes 3 support the inner wall of the outer sheath layer 1, and the corrugated tubes 3 are hollow. The corrugated tubes 3 increase the strength and toughness of this embodiment.

[0015] like Figure 1 As shown, the shielded cable 2 includes an inner sheath layer 21, a metal foil layer 24, a cable core 22 and a Kevlar fiber strip 23. The inner sheath layer 21, the metal foil layer 24, the cable core 22 and the Kevlar fiber strip 23 are fixed in sequence from the outside to the outside. The inner sheath layer 21 is sleeved and fixed on the outside of the metal foil layer 24. The metal foil layer 24 reduces electromagnetic interference and enhances the shielding capability of the present embodiment. The number of cable cores 22 is several and the cable cores 22 are arranged inside the metal foil layer 24. The number of Kevlar fiber strips is several and the Kevlar fiber strips 23 are arranged inside the inner sheath layer 21. The Kevlar fiber strips 23 improve the fire resistance of the present embodiment.

[0016] Specifically, the cable core 22 is made of tinned copper wire. The cable core 22 made of this material has good corrosion resistance and electrical conductivity.

[0017] To elaborate further, Figure 1 As shown, the Kevlar fiber strips 23 are installed at the center of the cable core 22. The Kevlar fiber strips 23 are arranged in a concentrated manner and distributed in a circular shape. This structure improves the tensile resistance of this embodiment.

[0018] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0019] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A Kevlar fiber double-shielded cable, comprising an outer sheath layer (1) and a shielded cable (2), characterized in that: The number of the shielded cables (2) is two, the outer sheath layer (1) is sleeved on the outer circumference of the shielded cable (2), a filling cavity (4) is formed between the outer sheath layer (1) and the shielded cable (2), a plurality of strip-shaped corrugated tubes (3) are arranged in the filling cavity (4), the shielded cable (2) comprises an inner sheath layer (21), a cable core (22), a Kevlar fiber strip (23) and a metal foil layer (24), the inner sheath layer (21) is sleeved and fixed on the outer side of the metal foil layer (24), the number of the cable core (22) is a plurality and the cable core (22) is arranged inside the metal foil layer (24), the number of the Kevlar fiber strips (23) is a plurality and the Kevlar fiber strips (23) are arranged inside the inner sheath layer (21), and the corrugated tube (3) fills the filling cavity (4).

2. A Kevlar fiber double-shielded cable according to claim 1, characterized in that: The cable core (22) is made of tinned copper wire.

3. The Kevlar fiber double-shielded cable according to claim 1, characterized in that: The Kevlar fiber strip (23) is installed at the center of the cable core (22).

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