Ultra-high voltage direct current combined transposition conductor

Abstract

The utility model discloses an ultrahigh voltage direct current combined transposed conductor, including copper flat wire, the four surface of copper flat wire is coated with insulating paint layer, copper flat wire and insulating paint layer combination into enameled wire, the enameled wire includes end line and centre line, the end line is the two root of the uppermost or the lowermost, the rest is centre line, the uppermost and the lowermost two end lines are staggered and set, the uppermost and the lowermost two end lines between centre line are coated with self -adhesive, a plurality of enameled wire's outside is covered with thermoplastic elastomer layer, and the self -adhesive is coated in a plurality of centre line's top and below, and the uppermost and the lowermost two end lines are fixed with centre line through self -adhesive and bond, can improve the stability of transposed conductor, simultaneously, through extrusion forming process and wrap thermoplastic elastomer layer in a plurality of enameled wire's outside, through thermoplastic elastomer layer to the uppermost and the lowermost two staggered end line outside buffer protection, improve the security of transposed conductor.

Description

Technical Field

[0001] This utility model relates to the field of transposition conductor technology, specifically to an ultra-high voltage DC combined transposition conductor. Background Technology

[0002] In ultra-high voltage equipment, transposed conductors are used as winding conductors, which can significantly reduce the load loss of ultra-high voltage equipment, reduce the temperature rise of winding hot spots, improve the mechanical strength of windings, and make the structure more compact.

[0003] Existing transposition conductors used in ultra-high voltage equipment are mostly composed of a certain number of enameled copper flat wires arranged in two rows with their wide surfaces in contact with each other. The top and bottom two enameled copper flat wires are transposed in the same direction along the narrow surface. However, because the top and bottom two enameled copper flat wires will have overlapping areas, the conductors at these locations will be subjected to greater external pressure and are prone to crushing damage, resulting in lower safety. Furthermore, because the top and bottom two enameled copper flat wires are overlapping during transposition, there are gaps between them and the adjacent layer of enameled copper flat wires, affecting the overall stability of the transposition conductor. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-high voltage DC combined transposition conductor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultra-high voltage DC combined transposition conductor, comprising copper flat wire, wherein the four surfaces of the copper flat wire are coated with an insulating varnish layer, the copper flat wire and the insulating varnish layer are combined to form an enameled wire, the enameled wire includes end wires and center wires, the end wires are the top two or the bottom two, the rest are center wires, the top two and the bottom two end wires are staggered, the top two and the bottom two end wires are coated with self-adhesive between them and the center wires, and the outer sides of several enameled wires are covered with a thermoplastic elastic layer.

[0006] As a further preferred embodiment of this technical solution, the upper and lower ends of the thermoplastic elastic layer are wider than the two sides of the thermoplastic elastic layer.

[0007] As a further preferred embodiment of this technical solution, the thickness of the upper and lower ends of the thermoplastic elastic layer is half the thickness of the two sides of the thermoplastic elastic layer.

[0008] As a further preferred embodiment of this technical solution, the outer side of the thermoplastic elastic layer is covered with insulating paper tape.

[0009] This utility model provides an ultra-high voltage DC combined transposition conductor, which has the following beneficial effects:

[0010] (1) This utility model improves the stability of transposed wires by coating self-adhesive above and below several center lines and bonding the top and bottom two end lines to the center lines with self-adhesive.

[0011] (2) This utility model uses an extrusion molding process to wrap a thermoplastic elastic layer around the outside of several enameled wires. The thermoplastic elastic layer provides buffer protection for the outside of the two intersecting end wires at the top and bottom, thereby improving the safety of the transposed wires. Attached Figure Description

[0012] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0013] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0014] In the diagram: 1. Copper flat wire; 2. Insulating varnish layer; 3. Enamelled wire; 4. Self-adhesive; 5. Thermoplastic elastic layer; 6. Insulating paper tape; 31. Terminal wire; 32. Neutral wire. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] This utility model provides a technical solution: such as Figure 1 and Figure 2 As shown in this embodiment, an ultra-high voltage direct current combined transposition conductor includes a copper flat wire 1. The four surfaces of the copper flat wire 1 are coated with an insulating varnish layer 2. The copper flat wire 1 and the insulating varnish layer 2 are combined to form an enameled wire 3. The enameled wire 3 includes end wires 31 and center wires 32. The end wires 31 are the top two or bottom two, and the rest are center wires 32. The top and bottom two end wires 31 are staggered. A self-adhesive 4 is coated between the top and bottom two end wires 31 and the center wires 32. The self-adhesive 4 is a natural rubber-based adhesive. The outer side of each enameled wire 3 is covered with a thermoplastic elastic layer 5, which is made of silicone rubber. Self-adhesive 4 is applied above and below several center wires 32, and the top and bottom two end wires 31 are bonded and fixed to the center wires 32 by self-adhesive 4, which can improve the stability of the transposed wire. At the same time, the thermoplastic elastic layer 5 is wrapped around the outer side of several enameled wires 3 by extrusion molding process. The thermoplastic elastic layer 5 provides buffer protection for the outer side of the top and bottom two intersecting end wires 31, thereby improving the safety of the transposed wire.

[0017] like Figure 1 and Figure 2As shown, the upper and lower ends of the thermoplastic elastic layer 5 are wider than the sides of the thermoplastic elastic layer 5, and the thickness of the upper and lower ends of the thermoplastic elastic layer 5 is half the thickness of the sides of the thermoplastic elastic layer 5.

[0018] When the thermoplastic elastic layer 5 is wrapped around the outside of several enameled wires 3 by extrusion molding, the thicker thermoplastic elastic layer 5 mainly provides buffer protection for the outside of the two intersecting end wires 31 at the top and bottom, reducing the amount of thermoplastic elastic layer 5 used and reducing production costs.

[0019] like Figure 1 and Figure 2 As shown, the thermoplastic elastic layer 5 is covered with insulating paper tape 6 on its outer side.

[0020] The insulating paper tape 6 is wrapped around the outside of the thermoplastic elastic layer 5 through a wrapping process to provide insulation protection for the transposed conductor.

[0021] This utility model provides an ultra-high voltage DC combined transposition conductor, the specific working principle of which is as follows:

[0022] When the device is in use, during the production of transposed conductors, self-adhesive 4 is applied above and below several center wires 32, and the top and bottom two end wires 31 are bonded and fixed to the center wires 32 using self-adhesive 4, which can improve the stability of the transposed conductors. At the same time, a thermoplastic elastic layer 5 is wrapped around the outside of several enameled wires 3 through an extrusion molding process. The thermoplastic elastic layer 5 provides buffer protection for the outside of the top and bottom two interlaced end wires 31, improving the safety of the transposed conductors. Finally, insulating paper tape 6 is wrapped around the outside of the thermoplastic elastic layer 5 through a wrapping process for insulation protection of the transposed conductors.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage direct current combined transposition conductor, comprising a copper flat wire (1), wherein the four surfaces of the copper flat wire (1) are coated with an insulating varnish layer (2), and the copper flat wire (1) and the insulating varnish layer (2) are combined to form an enameled wire (3), characterized in that: The enameled wire (3) includes end wires (31) and center wires (32). The end wires (31) are the top two or the bottom two, and the rest are center wires (32). The top two and bottom two end wires (31) are staggered. The top two and bottom two end wires (31) and the center wires (32) are coated with self-adhesive (4). The outer side of several enameled wires (3) is covered with a thermoplastic elastic layer (5).

2. The ultra-high voltage DC combined transposition conductor according to claim 1, characterized in that: The upper and lower ends of the thermoplastic elastic layer (5) are wider than the two sides of the thermoplastic elastic layer (5).

3. The ultra-high voltage DC combined transposition conductor according to claim 2, characterized in that: The thickness of the thermoplastic elastic layer (5) at both ends is half the thickness of the thermoplastic elastic layer (5) on both sides.

4. The ultra-high voltage DC combined transposition conductor according to claim 3, characterized in that: The thermoplastic elastic layer (5) is covered with insulating paper tape (6) on the outside.

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