Copper wire and aluminum wire mixed cable

Abstract

The invention belongs to the technical field of cable manufacturing, and particularly relates to a copper wire and aluminum wire mixed cable, which comprises copper wires, aluminum wires and an insulating layer, a plurality of copper wires are axially stranded on the outer circumferential surfaces of the aluminum wires, and the insulating layer wraps the outer circumferential surface of a whole formed by the aluminum wires and the copper wires; according to the invention, the copper wire and aluminum wire mixed cable is designed by adopting a mode of wrapping the copper wire outside the aluminum wire and stranding the copper wire instead of a pure copper wire in a wire cable, so that the cable has good transmission performance, the cost can be reduced, and the problem of high manufacturing cost of the existing pure copper wire is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of cable manufacturing, and specifically relates to a cable comprising a mixture of copper wires and aluminum wires. Background Art

[0002] Pure copper wire is widely used in the manufacture of wires and cables. Although pure copper wire has good conductivity and ductility, the price of copper is relatively expensive. Most traditional wire and cable products use pure copper wire as a conductor. However, pure copper wire is relatively expensive. In some current-load applications with low current requirements, it is not economical to use pure copper wire. Therefore, it is necessary to design a cable that is more economical than pure copper wire but has relatively good conductivity. Summary of the Invention

[0003] This application addresses the shortcomings of the existing technology and adopts the method of wrapping copper wires around aluminum wires and twisting them into bundles to replace pure copper wires in wires and cables. A cable with mixed copper and aluminum wires is designed, which has good transmission performance and reduces costs in situations where the current load requirements are not high, thereby solving the problem of high cost of existing pure copper wires.

[0004] The technical solution of this application is as follows:

[0005] A cable mixed with copper wires and aluminum wires comprises copper wires, aluminum wires and an insulating layer. A plurality of the copper wires are axially bundled and twisted on the outer circumference of a plurality of the aluminum wires, and the insulating layer is wrapped around the outer circumference of the whole composed of the aluminum wires and the copper wires.

[0006] Preferably, in any cross section of the cable, the copper wire is wrapped around to form a ring, and the aluminum wire is located inside the ring.

[0007] Preferably, the number of the copper wires is less than the number of the aluminum wires.

[0008] Preferably, the cross section of the copper wire is rectangular.

[0009] Preferably, there are at least 6 copper wires.

[0010] Preferably, there are at least two aluminum wires, and all the aluminum wire bundles are twisted together.

[0011] Preferably, the insulating layer is made of fluoropolymer material.

[0012] The working principle and beneficial effects of this application are:

[0013] 1. This application adopts the method of wrapping copper wires around aluminum wires and twisting them into bundles to replace pure copper wires in wires and cables. The designed mixed copper and aluminum wire cables have good transmission performance and reduce costs in situations where the current load requirements are not high, solving the problem of high cost of existing pure copper wires.

[0014] 2. Copper wire wrapped aluminum wire conductors are cheaper than pure copper wires because of the lower cost of aluminum.

[0015] 3. The copper-wrapped aluminum conductor is light and soft, which can reduce the weight of the cable and facilitate transportation and installation, thereby reducing the transportation and installation costs of the cable.

[0016] 4. It has better conductivity. Aluminum has a low density and a large resistance, so there will be loss when current passes through it. The copper wire wrapped aluminum wire conductor has a circle of copper layer, and its conductivity will be better than that of pure aluminum wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure in which the cross sections of the copper wire and the aluminum wire in this application are both circular;

[0018] Figure 2 This is a schematic structural diagram of a rectangular cross section of the copper wire in this application.

[0019] Among them: 1. Copper wire; 2. Aluminum wire; 3. Insulation layer. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-2 As shown, a cable containing a mixture of copper wires and aluminum wires includes copper wires 1, aluminum wires 2, and an insulating layer 3. Several of the copper wires 1 are axially bundled and twisted on the outer circumferential surface of several of the aluminum wires 2, and the insulating layer 3 is wrapped around the outer circumferential surface of the whole composed of the aluminum wires 2 and the copper wires 1.

[0022] In this embodiment, a cable formed by copper wire wrapped with aluminum wire is used instead of pure copper wire in the conductor application of wires and cables, which has good transmission performance and reduces costs.

[0023] As a preferred manner, in order to ensure the conductive performance, on any cross section of the cable, the copper wire 1 is wrapped around to form a ring, and the aluminum wire 2 is located inside the ring.

[0024] As a preferred embodiment, the number of the copper wires 1 is less than the number of the aluminum wires 2 .

[0025] As a preferred embodiment, the cross section of the copper wire 1 is rectangular. The rectangular structure allows the copper wire 1 to have a sufficient contact surface with the aluminum wire 2 .

[0026] As a preferred embodiment, the number of the copper wires 1 is at least 6, and 6 copper wires can completely cover the aluminum wire 2 .

[0027] As a preferred embodiment, there are at least two aluminum wires 2, and all the aluminum wires 2 are twisted together.

[0028] As a preferred embodiment, the insulating layer 3 is made of fluoropolymer material, which can ensure the insulation of the cable. At the same time, fluoropolymer material has good corrosion resistance, high temperature resistance, and anti-spontaneous combustion properties.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cable with mixed copper wire and aluminum wire, characterized in that: The invention comprises a copper wire (1), an aluminum wire (2), and an insulating layer (3), wherein a plurality of the copper wires (1) are axially bundled and twisted on the outer circumferential surface of a plurality of the aluminum wires (2), and the insulating layer (3) is wrapped on the outer circumferential surface of the whole composed of the aluminum wires (2) and the copper wires (1).

2. A cable mixed with copper wires and aluminum wires according to claim 1, characterized in that: In any cross section of the cable, the copper wire (1) is wrapped around to form a ring, and the aluminum wire (2) is located inside the ring.

3. A cable comprising a mixture of copper wires and aluminum wires according to claim 1, characterized in that: The number of the copper wires (1) is less than the number of the aluminum wires (2).

4. A cable mixed with copper wires and aluminum wires according to claim 1, characterized in that: The cross section of the copper wire (1) is rectangular.

5. The cable comprising a mixture of copper wires and aluminum wires according to claim 1, characterized in that: The number of the copper wires (1) is at least 6.

6. A cable comprising a mixture of copper wires and aluminum wires according to claim 1, characterized in that: There are at least two aluminum wires (2), and all of the aluminum wires (2) are twisted together.

7. A cable comprising a mixture of copper wires and aluminum wires according to claim 1, characterized in that: The insulating layer (3) is made of fluoropolymer material.

Images