High-density tensile conductor for cable

Abstract

The utility model relates to a high-density tensile conductor for a cable, which comprises a central tensile steel column, a plurality of conductor inner cores are twisted outside the central tensile steel column, each conductor inner core comprises a central aramid yarn and a plurality of copper wires twisted outside the central aramid yarn, a first spiral copper strip choking coil and a second spiral copper strip choking coil are sequentially wound outside the conductor inner cores, and the first spiral copper strip choking coil and the second spiral copper strip choking coil are wound outside the central aramid yarn. A wire mesh weaving layer is arranged outside the second spiral copper strip choking coil, an insulating layer is arranged outside the wire mesh weaving layer, a plurality of protruding rings are evenly distributed on the outer wall of the center tensile steel column in the length direction, and a plurality of tensile ropes are evenly embedded in the wire mesh weaving layer. The cable is stable in conductor structure, higher in tensile property and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of cable conductors, in particular to a high-density tensile conductor for cables. Background Art

[0002] Cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. 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. They are mainly used to connect circuits and electrical appliances.

[0003] Conductors are an important part of cables. Sometimes, it is easy for the entire conductor to break due to repeated pulling of the cable, leading to safety accidents. Therefore, how to improve the tensile properties of the conductor becomes the key to solving this problem. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the prior art and provides a high-density tensile conductor for cables.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A high-density tensile conductor for cables comprises a central tensile steel column, a plurality of conductor inner cores are twisted outside the central tensile steel column, the conductor inner core comprises a central aramid wire and a plurality of copper wires twisted outside the central aramid wire, a first spiral copper strip choke and a second spiral copper strip choke are sequentially wound outside the conductor inner core, a wire mesh braided layer is arranged outside the second spiral copper strip choke, an insulating layer is arranged outside the wire mesh braided layer, a plurality of protruding rings are evenly distributed on the outer wall of the central tensile steel column along the length direction, and a plurality of tensile ropes are evenly embedded inside the wire mesh braided layer.

[0007] The cross section of the protruding ring is an arc-shaped structure.

[0008] The first spiral copper strip choke and the second spiral copper strip choke are wound in opposite directions and their intersection points are at degrees.

[0009] A plurality of protrusions are evenly distributed on the outer walls of the first spiral copper strip choke and the second spiral copper strip choke.

[0010] A water-blocking yarn layer is arranged between the wire mesh braiding layer and the insulating layer.

[0011] The beneficial effects of the utility model are: the conductor structure of the utility model is stable, the tensile performance is higher, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 Schematic diagram of the protruding ring outside the central tensile steel column;

[0014] Figure 3 Schematic diagram of a first spiral copper strip choke and a second spiral copper strip choke;

[0015] In the figure: 1-central tensile steel column; 2-conductor inner core; 3-first spiral copper strip choke; 4-second spiral copper strip choke; 5-wire mesh braided layer; 6-insulating layer; 7-protruding ring; 8-tensile rope;

[0016] 21-center aramid wire; 22-copper wire;

[0017] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0019] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] A high-density tensile conductor for cables, such as Figure 1-Figure 3As shown, it includes a central tensile steel column 1, a conductor inner core 2, a first spiral copper strip choke 3, a second spiral copper strip choke 4, a wire mesh braided layer 5, an insulating layer 6, a protruding ring 7 and a tensile rope 8.

[0023] The central tensile steel column 1 plays a role in supporting and providing central tensile force. A number of protruding rings 7 are evenly distributed on the outer wall of the central tensile steel column 1 along the length direction. The protruding rings 7 can provide a certain deformation capacity when the central tensile steel column 1 is deformed by tension.

[0024] The cross section of the protruding ring 7 is an arc-shaped structure.

[0025] A plurality of conductor cores 2 are twisted outside the central tensile steel column 1, and the number of the conductor cores 2 is 9 groups.

[0026] The conductor inner core 2 includes a central aramid wire 21 and a plurality of copper wires 22 twisted outside the central aramid wire 21 . The number of the copper wires 22 in the conductor inner core 2 is 7.

[0027] The central aramid yarn 21 includes four aramid yarns with a diameter of 0.3 mm; the central aramid yarn 21 can improve the tensile strength of the conductor.

[0028] A first spiral copper strip choke 3 and a second spiral copper strip choke 4 are sequentially wound around the conductor inner core 2 .

[0029] The first spiral copper strip choke 3 and the second spiral copper strip choke 4 are wound in opposite directions and their intersections form a 45-degree angle.

[0030] The first spiral copper strip choke 3 and the second spiral copper strip choke 4 will have high resistance to the current caused by lightning, and through grounding treatment, the current caused by lightning will be conducted into the earth; the setting of the first spiral copper strip choke 3 and the second spiral copper strip choke 4 can also enhance the offsetting effect of the electric field, and at the same time greatly weaken the related magnetic field effect.

[0031] A number of protrusions are evenly distributed on the outer walls of the first spiral copper strip choke 3 and the second spiral copper strip choke 4, which increases the friction force when they are wound.

[0032] A wire mesh braided layer 5 is disposed outside the second spiral copper strip choke 4 , an insulating layer 6 is disposed outside the wire mesh braided layer 5 , a water-blocking yarn layer is disposed between the wire mesh braided layer 5 and the insulating layer 6 , and a plurality of tensile ropes 8 are uniformly embedded inside the wire mesh braided layer 5 .

[0033] The wire mesh braided layer 5 can not only improve the tensile strength, but also has a certain deformation effect, thereby improving the compressive strength.

[0034] The water-blocking yarn layer can provide waterproof protection for the internal conductor.

[0035] The tensile rope 8 further strengthens the tensile strength of the conductor.

[0036] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A high-density tensile conductor for a cable, characterized in that: The invention comprises a central tensile steel column (1), a plurality of conductor cores (2) are twisted outside the central tensile steel column (1), the conductor cores (2) comprise central aramid wires (21) and a plurality of copper wires (22) twisted outside the central aramid wires (21), a first spiral copper strip choke (3) and a second spiral copper strip choke (4) are sequentially wound outside the conductor core (2), a wire mesh braided layer (5) is arranged outside the second spiral copper strip choke (4), an insulating layer (6) is arranged outside the wire mesh braided layer (5), a plurality of protruding rings (7) are evenly distributed on the outer wall of the central tensile steel column (1) along the length direction, and a plurality of tensile ropes (8) are evenly embedded inside the wire mesh braided layer (5).

2. A high-density tensile conductor for cables according to claim 1, characterized in that: The cross section of the protruding ring (7) is an arc-shaped structure.

3. A high-density tensile conductor for cables according to claim 2, characterized in that: The first spiral copper strip choke (3) and the second spiral copper strip choke (4) are wound in opposite directions and their intersections are at 45 degrees.

4. A high-density tensile conductor for a cable according to claim 3, characterized in that: A plurality of protrusions are evenly distributed on the outer walls of the first spiral copper strip choke (3) and the second spiral copper strip choke (4).

5. A high-density tensile conductor for a cable according to claim 4, characterized in that: A water-blocking yarn layer is provided between the wire mesh braided layer (5) and the insulating layer (6).

6. A high-density tensile conductor for a cable according to claim 5, characterized in that: The number of copper wires (22) in the conductor inner core (2) is 7.

7. A high-density tensile conductor for a cable according to claim 6, characterized in that: The number of conductor inner cores (2) is 9 groups.

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