Composite tear-resistant polyvinyl chloride cable

Abstract

The utility model discloses a composite tear-resistant polyvinyl chloride cable, which comprises a cable core, the cable core comprises three wire cores and a resin filling material, a wrapping layer is arranged outside the cable core, the wrapping layer and the cable core are formed through extrusion, a polyvinyl chloride inner sheath is arranged outside the wrapping layer, and the resin filling material is arranged outside the polyvinyl chloride inner sheath. The armor layer is arranged outside the polyvinyl chloride inner sheath, the composite anti-tearing layer is arranged outside the armor layer, the polyvinyl chloride outer sheath is arranged outside the composite anti-tearing layer, and the polyvinyl chloride inner sheath, the armor layer, the composite anti-tearing layer and the polyvinyl chloride outer sheath are arranged into a whole. The composite anti-tear layer is arranged in the polyvinyl chloride cable, the composite anti-tear layer is of a multi-layer structure composed of the first macromolecule polyester layer, the second macromolecule polyester layer and the fiber mesh cloth, the macromolecule polyester and the fiber mesh cloth have good tensile toughness, the anti-tear performance of the polyvinyl chloride cable is improved, and the use effect of the polyvinyl chloride cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl chloride cables, in particular to a composite tear-resistant polyvinyl chloride cable. Background Art

[0002] Cable is a wire made of one or more mutually insulated conductors and an outer insulating protective layer. It is laid underground, in the air, etc. The cable is generally composed of three parts: conductor, insulating layer, and protective layer. There are usually two types of cables: power cables and control cables. Power cables are mainly used for the transmission and distribution of electric energy; control cables are mainly used for measurement, protection, control and other lines. Cables have the characteristics of internal power supply and external insulation. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. PVC cable refers to a cable with an outer sheath made of PVC material.

[0003] The Chinese patent publication number is CN215450967U, and the authorization announcement date is January 7, 2022. A new type of tear-resistant polyvinyl chloride cable includes a primary wrapping layer, which is filled with a filler of uniform density, a polymer polyester layer wrapped around the outer wall of the nylon mixed braided layer, and the polymer polyester layer is penetrated by equidistantly distributed fine-diameter tensile steel wires. The outer wall of the waterproof layer is wrapped with a polyvinyl chloride outer sheath, and the inner and outer walls of the waterproof layer are coated with a tensile adhesive layer at the joints between the polymer polyester layer and the polyvinyl chloride outer sheath. The polymer polyester layer has good performance in hardness, rigidity, puncture resistance and friction resistance, and it also has extremely strong tensile toughness. The thick-diameter tensile steel wire is penetrated inside the polymer polyester layer to further enhance the tensile strength of the polymer polyester layer, and the tensile adhesive layer can further enhance the tear stress resistance of the entire external protection mechanism. At the same time, the polyvinyl chloride outer sheath itself also has high strength performance and excellent geometric stability.

[0004] The outer sheath of the existing PVC cable is made of PVC, which has poor tensile and tear resistance. There is no tear resistance mechanism inside the cable core. The cable is prone to tearing when in use, which reduces the service life of the PVC cable and cannot meet the use requirements. Utility Model Content

[0005] The utility model aims to provide a composite tear-resistant polyvinyl chloride cable to solve the problem proposed in the above background technology that the outer sheath of the existing polyvinyl chloride cable adopts polyvinyl chloride, the tensile strength and tear resistance of polyvinyl chloride are poor, there is no tear-resistant mechanism inside the cable core, the cable is prone to tearing inside when in use, the service life of the polyvinyl chloride cable is reduced, and the use requirements cannot be met.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite tear-resistant polyvinyl chloride cable, comprising a cable core, the cable core comprising a wire core and a resin filler, three wire cores are provided, a sheath is provided on the outside of the cable core, and the sheath and the cable core are formed by extrusion, a polyvinyl chloride inner sheath is provided on the outside of the sheath, an armor layer is provided on the outside of the polyvinyl chloride inner sheath, a composite tear-resistant layer is provided on the outside of the armor layer, and a polyvinyl chloride outer sheath is provided on the outside of the composite tear-resistant layer, and the polyvinyl chloride inner sheath, the armor layer, the composite tear-resistant layer and the polyvinyl chloride outer sheath are provided as a whole.

[0007] Preferably, the wire core includes a conductor, a shielding layer, an insulating layer and a high-strength semi-conductive nylon sleeve, and the conductor is formed by twisting multiple copper wires, the shielding layer is arranged on the outside of the conductor, the insulating layer is arranged on the outside of the shielding layer, and the conductor, the shielding layer and the insulating layer are formed by extrusion, the high-strength semi-conductive nylon sleeve is arranged on the outside of the insulating layer, and the high-strength semi-conductive nylon sleeve and the insulating layer are arranged as a whole.

[0008] Preferably, the composite tear-resistant layer includes a first polymer polyester layer, a second polymer polyester layer, a fiber mesh and an anti-tensile adhesive layer, the fiber mesh is arranged between the first polymer polyester layer and the second polymer polyester layer, the anti-tensile adhesive layer is arranged at one end of the first polymer polyester layer and the second polymer polyester layer, and the first polymer polyester layer, the second polymer polyester layer, the fiber mesh and the anti-tensile adhesive layer are arranged as a whole.

[0009] Preferably, a tensile rope core is arranged inside the resin filler, at least four tensile rope cores are arranged, and the tensile rope core and the resin filler are arranged as a whole, and the tensile rope core is formed by twisting a plurality of basalt fiber filaments.

[0010] Preferably, a conductive metal wire shielding mesh tube is provided between the wrapping layer and the polyvinyl chloride inner sheath, and the conductive metal wire shielding mesh tube is integrally connected to the wrapping layer and the polyvinyl chloride inner sheath.

[0011] Preferably, the resin filler is arranged at the gaps between the three cores, and the three cores are arranged equidistantly in a triangle inside the cable core.

[0012] Preferably, the wrapping layer is made of Teflon tape.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model device is provided with a composite tear-resistant layer, wherein the composite tear-resistant layer is composed of a first polymer polyester layer, a second polymer polyester layer and a fiber mesh cloth to form a multilayer structure. The polymer polyester has excellent mechanical properties and extremely strong tensile toughness. The fiber mesh cloth can enhance the tear resistance laterally and improve the overall tear resistance effect of the polyvinyl chloride cable.

[0015] The utility model device is provided with a tensile rope core and a high-strength semi-conductive nylon sleeve. The tensile rope core is formed by twisting multiple basalt fiber filaments. The continuous fiber not only has high strength, but also has multiple excellent properties such as electrical insulation, corrosion resistance, and high temperature resistance. The tensile rope core made of twisted basalt fiber filaments is doped inside the resin filler to increase the tear resistance of the cable core. Wrapping the high-strength semi-conductive nylon sleeve on the outside of the core can increase the tensile and tear resistance of the core and improve the overall tear resistance of the polyvinyl chloride cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 A partial enlarged view of area A;

[0018] Figure 3 It is a cross-sectional view of the wire core of the utility model;

[0019] Figure 4 This is a structural diagram of the composite tear-resistant layer of the utility model.

[0020] In the figure: 1. Cable core; 2. Wire core; 3. Resin filler; 4. Tensile rope core; 5. Wrapping layer; 6. PVC inner sheath; 7. Armor layer; 8. Composite tear-resistant layer; 9. PVC outer sheath; 10. Conductive metal wire shielding mesh tube; 11. Conductor; 12. Shielding layer; 13. Insulation layer; 14. High-strength semi-conductive nylon sleeve; 15. First polymer polyester layer; 16. Second polymer polyester layer; 17. Fiber mesh; 18. Tensile adhesive layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4The utility model provides an embodiment: a composite tear-resistant polyvinyl chloride cable, comprising a cable core 1, the cable core 1 comprising a wire core 2 and a resin filler 3, three wire cores 2 are provided, a sheath 5 is provided on the outside of the cable core 1, and the sheath 5 and the cable core 1 are formed by extrusion, a polyvinyl chloride inner sheath 6 is provided on the outside of the sheath 5, an armor layer 7 is provided on the outside of the polyvinyl chloride inner sheath 6, a composite tear-resistant layer 8 is provided on the outside of the armor layer 7, and a polyvinyl chloride outer sheath 9 is provided on the outside of the composite tear-resistant layer 8, and the polyvinyl chloride inner sheath 6, the armor layer 7, the composite tear-resistant layer 8 and the polyvinyl chloride outer sheath 9 are provided as a whole.

[0023] See also Figure 1 and Figure 3 The core 2 includes a conductor 11, a shielding layer 12, an insulating layer 13 and a high-strength semi-conductive nylon sleeve 14, and the conductor 11 is formed by twisting a plurality of copper wires, the shielding layer 12 is arranged on the outside of the conductor 11, the insulating layer 13 is arranged on the outside of the shielding layer 12, and the conductor 11, the shielding layer 12 and the insulating layer 13 are formed by extrusion, the high-strength semi-conductive nylon sleeve 14 is arranged on the outside of the insulating layer 13, and the high-strength semi-conductive nylon sleeve 14 and the insulating layer 13 are integrated, the shielding layer 12 increases the shielding performance of the core 2, the insulating layer 13 increases the insulation performance of the core 2, and the high-strength semi-conductive nylon sleeve 14 increases the tensile and tearing resistance of the core 2.

[0024] See also Figure 1 , Figure 2 and Figure 4 The composite tear-resistant layer 8 includes a first polymer polyester layer 15, a second polymer polyester layer 16, a fiber mesh 17 and a tensile adhesive layer 18. The fiber mesh 17 is arranged between the first polymer polyester layer 15 and the second polymer polyester layer 16. The tensile adhesive layer 18 is arranged at one end of the first polymer polyester layer 15 and the second polymer polyester layer 16. The first polymer polyester layer 15, the second polymer polyester layer 16, the fiber mesh 17 and the tensile adhesive layer 18 are arranged as a whole. The first polymer polyester layer 15, the second polymer polyester layer 16 and the fiber mesh 17 form a multi-layer structure. The polymer polyester has excellent mechanical properties and extremely strong tensile toughness. The fiber mesh 17 can laterally enhance the tear resistance.

[0025] See also Figure 1 A tensile rope core 4 is arranged inside the resin filler 3. There are at least four tensile rope cores 4, and the tensile rope core 4 and the resin filler 3 are integrated. The tensile rope core 4 is formed by twisting a plurality of basalt fiber filaments. The tensile rope core 4 formed by twisting the basalt fiber filaments increases the tear resistance of the resin filler 3.

[0026] See also Figure 1 and Figure 2A conductive metal wire shielding mesh tube 10 is arranged between the sheath 5 and the polyvinyl chloride inner sheath 6, and the conductive metal wire shielding mesh tube 10 is connected to the sheath 5 and the polyvinyl chloride inner sheath 6 as a whole. The conductive metal wire shielding mesh tube 10 plays an electromagnetic shielding role, preventing the cable from being interfered by external signals and improving the use effect of the cable.

[0027] See also Figure 1 The resin filler 3 is arranged at the gap between the three cores 2, and the three cores 2 are arranged equidistantly in a triangle inside the cable core 1.

[0028] See also Figure 1 The wrapping layer 5 is made of Teflon tape, which is wrapped around the outside of the cable core 1 to provide flame retardancy, high temperature resistance and corrosion resistance.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite tear-resistant polyvinyl chloride cable, comprising a cable core (1), characterized in that: The cable core (1) comprises a wire core (2) and a resin filler (3), wherein three wire cores (2) are provided, a sheath (5) is provided on the outside of the cable core (1), and the sheath (5) and the cable core (1) are formed by extrusion, a polyvinyl chloride inner sheath (6) is provided on the outside of the sheath (5), an armor layer (7) is provided on the outside of the polyvinyl chloride inner sheath (6), a composite tear-resistant layer (8) is provided on the outside of the armor layer (7), a polyvinyl chloride outer sheath (9) is provided on the outside of the composite tear-resistant layer (8), and the polyvinyl chloride inner sheath (6), the armor layer (7), the composite tear-resistant layer (8) and the polyvinyl chloride outer sheath (9) are provided on the outside of the polyvinyl chloride inner sheath (6). The vinyl chloride outer sheath (9) is arranged as an integral body; the composite tear-resistant layer (8) comprises a first polymer polyester layer (15), a second polymer polyester layer (16), a fiber mesh (17) and a tensile adhesive layer (18); the fiber mesh (17) is arranged between the first polymer polyester layer (15) and the second polymer polyester layer (16); the tensile adhesive layer (18) is arranged at one end of the first polymer polyester layer (15) and the second polymer polyester layer (16); and the first polymer polyester layer (15), the second polymer polyester layer (16), the fiber mesh (17) and the tensile adhesive layer (18) are arranged as an integral body.

2. A composite tear-resistant polyvinyl chloride cable according to claim 1, characterized in that: The wire core (2) comprises a conductor (11), a shielding layer (12), an insulating layer (13) and a high-strength semi-conductive nylon sleeve (14), wherein the conductor (11) is formed by twisting a plurality of copper wires, the shielding layer (12) is arranged outside the conductor (11), the insulating layer (13) is arranged outside the shielding layer (12), and the conductor (11), the shielding layer (12) and the insulating layer (13) are formed by extrusion, the high-strength semi-conductive nylon sleeve (14) is arranged outside the insulating layer (13), and the high-strength semi-conductive nylon sleeve (14) and the insulating layer (13) are arranged as one body.

3. The composite tear-resistant polyvinyl chloride cable according to claim 1, characterized in that: A tensile-resistant rope core (4) is arranged inside the resin filler (3), at least four tensile-resistant rope cores (4) are arranged, and the tensile-resistant rope core (4) and the resin filler (3) are arranged as a whole, and the tensile-resistant rope core (4) is formed by twisting a plurality of basalt fiber filaments.

4. A composite tear-resistant polyvinyl chloride cable according to claim 1, characterized in that: A conductive metal wire shielding mesh tube (10) is provided between the wrapping layer (5) and the polyvinyl chloride inner sheath (6), and the conductive metal wire shielding mesh tube (10) is integrally connected to the wrapping layer (5) and the polyvinyl chloride inner sheath (6).

5. The composite tear-resistant polyvinyl chloride cable according to claim 1, characterized in that: The resin filler (3) is arranged at the gaps between the three wire cores (2), and the three wire cores (2) are arranged equidistantly in a triangular shape inside the cable core (1).

6. The composite tear-resistant polyvinyl chloride cable according to claim 1, characterized in that: The wrapping layer (5) is made of Teflon tape.

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