Copper-silver alloy high-strength continuous transposed conductor

Abstract

The invention discloses a copper-silver alloy high-strength continuous transposed conductor, and relates to the technical field of transposed conductors, the copper-silver alloy high-strength continuous transposed conductor comprises a copper-silver alloy wire core, the copper-silver alloy wire core is fixedly sleeved with a composite insulating layer, the composite insulating layer is fixedly sleeved with a flame-retardant layer, and the surface of the flame-retardant layer is provided with a groove. A reinforcing piece is fixedly connected to the corner of the inner wall of each groove, a reinforcing layer is fixedly connected to the outer portion of the flame-retardant layer in a sleeving mode, heat dissipation holes are formed in the two sides of the reinforcing layer, heat is fully conducted to the two sides through the grooves for heat dissipation, the structural strength is enhanced through the reinforcing pieces, collapse is avoided, and the heat dissipation effect is improved; the hot air circulation effect is further improved on the two sides of the flame-retardant layer, and the problems that due to the arrangement of supporting strips, the supporting area is small, the outer layer structure is likely to collapse, heat dissipation is hindered, due to the supporting strips, heat dissipation spaces are not communicated, heat of the top and the bottom is difficult to transmit to the two sides to be discharged, and local heat accumulation is likely to happen are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transposed conductor, in particular to a copper-silver alloy high-strength continuous transposed conductor. BACKGROUND

[0002] The transposed conductor refers to a certain number of enameled copper flat wires combined into two columns of wide surfaces in contact with each other, and transposed in the same direction on the upper and lower surfaces of the two columns of enameled wires along the narrow surfaces, and composed of multiple layers of continuous and tight wrapping with electrical insulation tape. The winding of large power transformers adopts the transposed conductor, which can greatly reduce the load loss, reduce the winding hot spot temperature rise, improve the winding mechanical strength, make the structure more compact, and make the coil processing more simple.

[0003] Chinese patent publication No. CN118919143A discloses a high-strength continuous transposed conductor. The reinforcing lining with built-in reinforcing ribs increases the compression and tensile resistance of the transposed conductor, improves the overall strength of the transposed conductor, and the support strips support between the reinforcing sleeve and the flame-retardant sleeve and form a heat dissipation space, so that the internal heat is more easily dissipated to the outside through the heat dissipation holes, ensuring the power transmission performance of the conductor. However, the small support area of the support strips can easily cause the outer structure to collapse, hinder heat dissipation, and the support strips make the heat dissipation spaces not interconnected, making it difficult for the heat at the top and bottom to be transmitted to the two sides for discharge, which can easily cause local heat accumulation. SUMMARY

[0004] The present application aims to provide a copper-silver alloy high-strength continuous transposed conductor to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a copper-silver alloy high-strength continuous transposed conductor, comprising a copper-silver alloy wire core, a composite insulation layer is fixedly connected to the outside of the copper-silver alloy wire core, a flame-retardant layer is fixedly connected to the outside of the composite insulation layer, grooves are formed on the surface of the flame-retardant layer, reinforcing sheets are fixedly connected to the inner wall corners of the grooves, a reinforcing layer is fixedly connected to the outside of the flame-retardant layer, and heat dissipation holes are formed on both sides of the reinforcing layer.

[0006] Preferably, air vents are formed on the inner walls of the grooves on the left and right sides of the flame-retardant layer.

[0007] Preferably, a protective layer is fixedly connected to the outside of the heat dissipation holes, and anti-slip grooves are formed on the top and bottom of the protective layer.

[0008] Preferably, binding grooves are formed on the surface of the protective layer.

[0009] Preferably, the copper-silver alloy wire core is composed of multiple copper-silver alloy wires, and the copper-silver alloy contains 0.05-0.5% silver and the balance of copper in terms of mass percentage.

[0010] Preferably, the copper-silver alloy wire core is further added with 0.01% to 0.05% of trace elements, and the trace elements are one or more of tin, zirconium or chromium.

[0011] Preferably, the surface corners of the copper-silver alloy wire core, the flame-retardant layer, the reinforcing layer, the protective layer and the composite insulation layer are all provided with arc surfaces.

[0012] Preferably, the material of the composite insulation layer comprises a polyimide film and a modified epoxy resin coating, and the polyimide film is located in the inner layer of the modified epoxy resin coating.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application is provided with a flame-retardant layer, grooves, reinforcing pieces and air passages, the grooves are distributed on the outer wall of the flame-retardant layer, the reinforcing pieces at the corner of the inner wall of the groove strengthen the support, avoiding the collapse of the reinforcing layer under pressure to hinder heat conduction, the heat dissipation holes are distributed on the two sides which are less subject to pressure, after the heat of the copper-silver alloy wire core is conducted to the flame-retardant layer, it is transmitted to the two sides through the grooves and dissipated through the heat dissipation holes, the air passages further improve the heat dissipation effect, the protective layer has a certain air permeability, avoiding heat accumulation, solving the problem that the setting of the supporting strips makes the supporting area small, easily causing the collapse of the outer structure, hindering heat dissipation, and the supporting strips make the heat dissipation spaces not interconnected, the heat at the top and bottom is difficult to be transmitted to the two sides for discharge, easily causing local heat accumulation.

[0015] The anti-skid grooves at the top and bottom of the protective layer can be clamped together when continuously transposed, improving the connection stability, after a plurality of protective layers are connected and transposed and stacked together, the binding grooves are coincident in position, the assembly plate is bound at the opening of the binding groove, which can further improve the stability of the plurality of protective layers stacked together, avoiding the risk of separation between the protective layers in harsh working environments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 3 It is a schematic diagram of the flame-retardant layer structure of the present application;

[0019] Figure 4 It is a schematic diagram of the flame-retardant layer structure of the present application; Figure 2 It is a schematic diagram of the flame-retardant layer structure of the present application;

[0020] In the diagram: 1. Copper-silver alloy wire core; 2. Flame retardant layer; 3. Groove; 4. Reinforcing sheet; 5. Ventilation groove; 6. Reinforcing layer; 7. Heat dissipation hole; 8. Protective layer; 9. Anti-slip groove; 10. Binding groove; 11. Composite insulation layer. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-4 This invention provides a technical solution: a high-strength continuous transposed copper-silver alloy conductor, comprising a copper-silver alloy core 1, a composite insulation layer 11 fixedly sleeved on the outside of the copper-silver alloy core 1, a flame-retardant layer 2 fixedly sleeved on the outside of the composite insulation layer 11, a groove 3 formed on the surface of the flame-retardant layer 2, a reinforcing piece 4 fixedly connected at the corner of the inner wall of the groove 3, a reinforcing layer 6 fixedly sleeved on the outside of the flame-retardant layer 2, and heat dissipation holes 7 formed on both sides of the reinforcing layer 6. Heat is fully conducted to both sides for heat dissipation through the groove 3, and the reinforcing piece 4 strengthens the structural strength, prevents collapse and improves the heat dissipation effect.

[0023] Furthermore, ventilation grooves 5 are provided on the inner walls of the grooves 3 on both sides of the flame-retardant layer 2 to further improve the heat circulation effect on both sides of the flame-retardant layer 2.

[0024] Furthermore, a protective layer 8 is fixedly attached to the outside of the heat dissipation hole 7. Anti-slip grooves 9 are provided on the top and bottom of the protective layer 8. When the protective layers 8 are connected, swapped and stacked together, the anti-slip grooves 9 can be locked together to improve the fixing effect.

[0025] Furthermore, the surface of the protective layer 8 is provided with binding grooves 10 to facilitate binding the assembly plate and fixing multiple sets of protective layers 8 together.

[0026] Furthermore, the copper-silver alloy core 1 is composed of multiple copper-silver alloy wires, with the copper-silver alloy comprising 0.05% to 0.5% silver by mass percentage and the balance being copper, thereby improving conductivity.

[0027] Furthermore, 0.01% to 0.05% of trace elements are added to the copper-silver alloy wire core 1, and the trace elements are one or more of tin, zirconium or chromium.

[0028] Furthermore, the corners of the copper-silver alloy wire core 1, flame-retardant layer 2, reinforcing layer 6, protective layer 8, and composite insulation layer 11 are all designed with arc surfaces to facilitate continuous repositioning and stacking, and to prevent jamming at the repositioning points.

[0029] Furthermore, the composite insulation layer 11 is made of a polyimide film and a modified epoxy resin coating. The polyimide film is located in the inner layer of the modified epoxy resin coating, which is resistant to high temperature and chemical corrosion, and improves the breakdown voltage and mechanical wear resistance.

[0030] Working principle: The copper-silver alloy and added trace elements in the copper-silver alloy core 1 give it good conductivity and stability. The flame-retardant layer 2 has good high temperature resistance and flame retardant effect, preventing the copper-silver alloy core 1 from short-circuiting and causing fire. The grooves 3 are distributed on the outer wall of the flame-retardant layer 2. The reinforcing piece 4 at the corner of the inner wall of the groove 3 strengthens the support and prevents the reinforcing layer 6 from being squeezed and collapsed, thus hindering heat conduction. The heat dissipation holes 7 are distributed on the two sides with less pressure. After the heat from the copper-silver alloy core 1 is conducted to the flame-retardant layer 2, it is transferred to the two sides through the grooves 3 and dissipated through the heat dissipation holes 7. The ventilation groove 5 further improves the heat dissipation effect. The protective layer 8 has a certain degree of breathability to avoid heat accumulation. This solves the problem that the support bar setting makes the support area small, which is easy to cause the outer structure to collapse and hinder heat dissipation. In addition, the support bar makes the heat dissipation space not interconnected, and the heat from the top and bottom is difficult to be transferred to the two sides for dissipation, which easily leads to local heat accumulation.

[0031] The anti-slip grooves 9 on the top and bottom of the protective layer 8 can interlock with each other during continuous repositioning, improving the connection stability. After multiple sets of protective layers 8 are connected, repositioned and stacked together, the binding grooves 10 overlap. Binding the assembly plate at the opening of the binding grooves 10 can further improve the stability of multiple sets of protective layers 8 stacked together and avoid the risk of the protective layers 8 detaching in harsh working environments.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper-silver alloy high-strength continuously transposed conductor, comprising a copper-silver alloy core (1), characterized in that: The copper-silver alloy wire core (1) is fixedly sleeved with a composite insulation layer (11), and a flame-retardant layer (2) is fixedly sleeved on the outside of the composite insulation layer (11). A groove (3) is opened on the surface of the flame-retardant layer (2), and a reinforcing plate (4) is fixedly connected at the corner of the inner wall of the groove (3). A reinforcing layer (6) is fixedly sleeved on the outside of the flame-retardant layer (2), and heat dissipation holes (7) are opened on both sides of the reinforcing layer (6).

2. The copper-silver alloy high-strength continuous transposed conductor according to claim 1, characterized in that: Ventilation grooves (5) are provided on the inner walls of the grooves (3) on both sides of the flame-retardant layer (2).

3. The copper-silver alloy high-strength continuous transposed conductor according to claim 1, characterized in that: The heat dissipation hole (7) is fixedly fitted with a protective layer (8), and anti-slip grooves (9) are provided on the top and bottom of the protective layer (8).

4. The copper-silver alloy high-strength continuous transposed conductor according to claim 3, characterized in that: The protective layer (8) has binding grooves (10) on its surface.

5. The copper-silver alloy high-strength continuous transposed conductor according to claim 1, characterized in that: The copper-silver alloy core (1) is composed of multiple copper-silver alloy wires, and the copper-silver alloy is composed of 0.05% to 0.5% silver by mass percentage, with the balance being copper.

6. The copper-silver alloy high-strength continuous transposed conductor according to claim 1, characterized in that: The copper-silver alloy wire core (1) also contains 0.01% to 0.05% trace elements, which are one or more of tin, zirconium or chromium.

7. The copper-silver alloy high-strength continuous transposed conductor according to claim 4, characterized in that: The copper-silver alloy wire core (1), flame-retardant layer (2), reinforcing layer (6), protective layer (8) and composite insulation layer (11) are all provided with arc-shaped corners.

8. The copper-silver alloy high-strength continuous transposed conductor according to claim 1, characterized in that: The composite insulating layer (11) is made of a polyimide film and a modified epoxy resin coating, wherein the polyimide film is located in the inner layer of the modified epoxy resin coating.

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