A type of pressure-resistant wire and cable

Abstract

This utility model relates to the field of wire and cable technology, and discloses a pressure-resistant wire and cable, including an outer armor. Multiple external scratch-resistant and abrasion-resistant strips are provided at equal angles on the outer surface of the outer armor. These strips are semi-circular and integrally formed with the outer armor. An outer sheath is disposed inside the outer armor, and a steel-plastic composite tape is wrapped inside the outer sheath. This utility model, by integrating the external scratch-resistant and abrasion-resistant strips with the outer armor, combined with the double-layer reverse wrapping structure of the steel-plastic composite tape, and the multiple sets of phosphated steel wires interlaced inside the inner sheath, improves the cable's pressure resistance and scratch-resistant and abrasion-resistant performance from the outside in multiple dimensions. This allows the cable to effectively resist deformation and damage when subjected to external forces such as compression and scratching, ensuring the safety of the internal conductor core and extending the cable's service life.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, specifically to a pressure-resistant wire and cable. Background Technology

[0002] Electric wires and cables are crucial carriers for power transmission and signal transmission, widely used in power, communications, construction, and other fields. However, existing electric wires and cables still have some shortcomings in use: on the one hand, their compressive strength is insufficient. When subjected to external forces such as squeezing or trampling, the cables are prone to deformation, which can even damage the internal conductor cores, affecting the stable transmission of power or signals and shortening the cable's service life. On the other hand, their outer surface lacks scratch and abrasion resistance. In complex laying environments (such as underground, tunnels, and industrial sites), the outer armor is easily scratched and worn by sharp objects, damaging the cable's outer protective structure, reducing the protection effect on internal components, and thus affecting the overall performance of the cable. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a pressure-resistant wire and cable. By incorporating external anti-scratch and wear-resistant strips, steel-plastic composite tape, phosphated steel wire, and other structures, it solves the problems of poor pressure resistance, insufficient scratch and wear resistance on the outer surface, and easy damage to the internal core or failure of the outer protective layer caused by external forces in existing wires and cables.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure-resistant wire and cable, comprising an outer armor, wherein multiple external scratch-resistant and wear-resistant strips are provided at equal angles on the outer surface of the outer armor, the external scratch-resistant and wear-resistant strips are semi-circular in structure and integrally formed with the outer armor, which can effectively enhance the scratch-resistant and wear-resistant performance of the outer armor and reduce the scratch damage to the outer layer of the cable by external sharp objects; an outer sheath is provided on the inner side of the outer armor, and a steel-plastic composite tape is wrapped on the inner side of the outer sheath, the steel-plastic composite tape is a two-layer structure, and the two layers of steel-plastic composite tape are stacked in opposite directions, which can improve the structural strength and tensile and compressive strength of the cable.

[0007] The steel-plastic composite tape has an inner sheath on its inner side. Both the outer and inner sheaths are made of polyvinyl chloride (PVC), and the thickness of the outer sheath is 1.2-1.5 times that of the inner sheath. PVC has good insulation and certain mechanical strength. The inner and outer sheaths of different thicknesses can provide appropriate protection for the outer and inner layers, respectively. The inner sheath has four sets of conductor cores and four sets of phosphated steel wires arranged at equal angles inside. The four sets of conductor cores and four sets of phosphated steel wires are arranged in an alternating pattern with the same included angle.

[0008] Each set of conductor cores is wrapped with a conductor shield. The conductor cores are made of multiple stranded copper wires, and the conductor cores and conductor shields are connected by a wrapping and bonding method. The multiple strands of copper wires improve the flexibility and conductivity stability of the conductor cores, and the conductor shields can optimize the electric field distribution and reduce corona phenomena. Each set of phosphated steel wires is wrapped with polyethylene. There are at least four phosphated steel wires in each set, and the multiple phosphated steel wires are distributed in a ring array within the polyethylene. The phosphated steel wires have excellent compressive and deformation resistance, and can provide reliable compressive support for the inside of the cable. The conductor shields are filled with an insulating medium outside the polyethylene and inside the inner sheath. The insulating medium is cross-linked polyethylene insulating material, and the insulating medium is tightly bonded to the conductor shields, inner sheath, and polyethylene. Cross-linked polyethylene insulating material has excellent insulation performance, heat resistance, and mechanical strength, and can effectively isolate different conductor cores and phosphated steel wires, ensuring the safety of power or signal transmission.

[0009] As a further improvement of this utility model, the number of the outer anti-scratch and wear-resistant strips is reasonably set according to the circumference of the outer armor, and the spacing between adjacent outer anti-scratch and wear-resistant strips is uniform, so as to comprehensively improve the circumferential anti-scratch and wear-resistant effect of the outer armor.

[0010] As a further improvement of this utility model: in the two-layer structure of the steel-plastic composite belt, each layer of the steel-plastic composite belt is composed of a steel strip and a plastic layer. The steel strip provides strength support, and the plastic layer enhances insulation and corrosion resistance.

[0011] As a further improvement of this utility model: the polyethylene is low-density polyethylene material, which has good flexibility and insulation properties, and can effectively wrap and insulate the phosphated steel wire.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, by setting an outer anti-scratch and wear-resistant strip and an outer armor integrally formed, combined with a double-layer reverse wrapping structure of steel-plastic composite tape, and multiple sets of phosphated steel wires interlaced inside the inner sheath, the compressive strength and anti-scratch and wear-resistant performance of the cable are improved from the outside to the inside in multiple dimensions. This enables the cable to effectively resist deformation and damage when subjected to external forces such as external compression and scratching, ensuring the safety of the internal conductor core and extending the service life of the cable.

[0014] 2. In this utility model, by using cross-linked polyethylene as the insulating medium and polyvinyl chloride as the inner and outer sheath material, combined with conductor shielding and conductor cores twisted together with multiple copper wires, the insulation performance and electric field distribution of the cable are guaranteed, and the conductivity stability and flexibility of the conductor cores are improved, so that the cable can transmit power or signals stably and efficiently. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Outer armor; 2. Outer scratch-resistant and wear-resistant strip; 3. Outer sheath; 4. Steel-plastic composite tape; 5. Inner sheath; 6. Insulating medium; 7. Polyethylene; 8. Phosphated steel wire; 9. Conductor shield; 10. Conductor core. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1 In this embodiment of the utility model, a pressure-resistant wire and cable includes an outer armor 1. The outer surface of the outer armor 1 is provided with multiple external scratch-resistant and wear-resistant strips 2 at equal angles. The external scratch-resistant and wear-resistant strips 2 are semi-circular in structure and integrally formed with the outer armor 1, which can effectively enhance the scratch-resistant and wear-resistant performance of the outer armor 1 and reduce the scratch damage to the outer layer of the cable by external sharp objects. An outer sheath 3 is provided on the inner side of the outer armor 1. A steel-plastic composite tape 4 is wrapped on the inner side of the outer sheath 3. The steel-plastic composite tape 4 is a two-layer structure, and the two layers of steel-plastic composite tape 4 are stacked in opposite directions, which can improve the structural strength and tensile and compressive strength of the cable.

[0021] The inner side of the steel-plastic composite tape 4 is provided with an inner sheath 5. Both the outer sheath 3 and the inner sheath 5 are made of polyvinyl chloride. The thickness of the outer sheath 3 is 1.2-1.5 times that of the inner sheath 5. Polyvinyl chloride has good insulation and certain mechanical strength. The inner and outer sheaths of different thicknesses can provide suitable protection for the outer and inner layers respectively. Inside the inner sheath 5, four sets of conductor cores 10 and four sets of phosphated steel wires 8 are arranged at equal angles. The four sets of conductor cores 10 and four sets of phosphated steel wires 8 are arranged in an alternating pattern with the same included angle.

[0022] Each conductor core 10 is wrapped with a conductor shield 9. The conductor core 10 is made of multiple strands of copper wire, and the conductor core 10 and the conductor shield 9 are connected by a wrapping and fitting method. The multiple strands of copper wire improve the flexibility and conductivity stability of the conductor core 10. The conductor shield 9 can optimize the electric field distribution and reduce corona phenomena. Each group of phosphated steel wires 8 is wrapped with polyethylene 7. There are at least four phosphated steel wires 8 in each group, and the multiple phosphated steel wires 8 are distributed in a ring array within the polyethylene 7. The phosphated steel wires 8 have excellent compressive and deformation resistance, and can provide reliable compressive support for the inside of the cable. The conductor shield 9 and the polyethylene 7 are filled with an insulating medium 6, which is cross-linked polyethylene insulating material. The insulating medium 6 is tightly fitted with the conductor shield 9, the inner sheath 5 and the polyethylene 7. The cross-linked polyethylene insulating material has excellent insulation performance, heat resistance and mechanical strength, and can effectively isolate different conductor cores 10 and phosphated steel wires 8, ensuring the safety of power or signal transmission.

[0023] The number of outer anti-scratch and wear-resistant strips 2 is reasonably set according to the perimeter of the outer armor 1, and the spacing between adjacent outer anti-scratch and wear-resistant strips 2 is uniform, so as to comprehensively improve the circumferential anti-scratch and wear-resistant effect of the outer armor 1.

[0024] In the two-layer structure of the steel-plastic composite strip 4, each layer of the steel-plastic composite strip 4 is composed of a steel strip and a plastic layer. The steel strip provides strength support, while the plastic layer enhances insulation and corrosion resistance.

[0025] Polyethylene 7 is made of low-density polyethylene, which has good flexibility and insulation, and can effectively wrap and insulate the phosphated steel wire 8.

[0026] The working principle of this utility model is as follows: During use, the outer anti-scratch and wear-resistant strip 2 on the outer surface of the outer armor 1 first resists external scratches and wear, reducing damage to the outer armor 1; when the cable is compressed, the outer armor 1, outer sheath 3 and steel-plastic composite tape 4 jointly bear the pressure, and the double-layer reverse wrapping structure of the steel-plastic composite tape 4 enhances the resistance to compression deformation; at the same time, the phosphated steel wire 8 inside the inner sheath 5 provides compressive support for the inside of the cable with its own high strength, preventing the conductor core 10 from being deformed or damaged due to compression; the conductor shield 9 on the outside of the conductor core 10 optimizes the electric field distribution, and the insulating medium 6 ensures the insulation between each conductor core 10 and the phosphated steel wire 8, so that the cable can still stably transmit power or signals in complex environments.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure-resistant wire and cable, comprising an outer armor (1), wherein an outer sheath (3) is disposed on the inner side of the outer armor (1), characterized in that: The outer armor (1) has multiple outer anti-scratch and wear-resistant strips (2) at equal angles on its outer surface. The outer sheath (3) is wrapped with a steel-plastic composite strip (4). The steel-plastic composite strip (4) has an inner sheath (5) inside. The inner sheath (5) has four sets of conductor cores (10) and four sets of phosphated steel wires (8) at equal angles inside. The four sets of conductor cores (10) and four sets of phosphated steel wires (8) are arranged in an alternating pattern with the same included angle. Each group of conductor cores (10) is wrapped with a conductor shield (9) on the outside, and each group of phosphated steel wires (8) is wrapped with polyethylene (7) on the outside. The conductor shield (9) and polyethylene (7) are filled with an insulating medium (6) on the outside and inside the inner sheath (5).

2. The pressure-resistant wire and cable according to claim 1, characterized in that: The outer anti-scratch and wear-resistant strip (2) has a semi-circular structure, and the outer anti-scratch and wear-resistant strip (2) is connected to the outer armor (1) in an integral molding manner.

3. The pressure-resistant wire and cable according to claim 1, characterized in that: The steel-plastic composite strip (4) has a two-layer structure, and the two layers of the steel-plastic composite strip (4) are stacked in opposite directions.

4. The pressure-resistant wire and cable according to claim 1, characterized in that: The insulating medium (6) is a cross-linked polyethylene insulating material, and the insulating medium (6) is connected to the conductor shield (9), the inner sheath (5) and the polyethylene (7) in a close fit.

5. The pressure-resistant wire and cable according to claim 1, characterized in that: The number of phosphated steel wires (8) in each group is at least four, and the multiple phosphated steel wires (8) are distributed in a ring array within the polyethylene (7).

6. The pressure-resistant wire and cable according to claim 1, characterized in that: The conductor core (10) is made of multiple copper wires twisted together, and the conductor core (10) is connected to the conductor shield (9) by wrapping and bonding.

7. The pressure-resistant wire and cable according to claim 1, characterized in that: Both the outer sheath (3) and the inner sheath (5) are made of polyvinyl chloride, and the thickness of the outer sheath (3) is 1.2-1.5 times that of the inner sheath (5).

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