Corrosion-resistant transposed conductor

Abstract

A corrosion-resistant transposed conductor, comprising copper flat wires (1), wrapping housings (2), a corrosion-resistant layer (3) and an insulating layer (4), wherein the wrapping housings (2) are arranged outside the copper flat wires (1), and the insulating layer (4) is arranged outside the corrosion-resistant layer (3); and a limiting structure (5) is provided between the corrosion-resistant layer (3) and the wrapping housings (2), the limiting structure (5) comprises a limiting frame and placement cavities (56), and a joining assembly (55) is provided at the joining position of the limiting frame (5).

Description

Corrosion-resistant transposed wire Technical Field

[0001] This application relates to the field of transposed conductor technology, for example to a corrosion-resistant transposed conductor. Background Technology

[0002] Transposed conductors, also known as transposed wires or transposition wires, are widely used in high-voltage direct current (HVDC) transmission systems and some high-voltage AC transmissions. They can significantly reduce load losses, decrease winding hot spot temperature rise, and improve winding mechanical strength. Transposed conductors typically consist of multiple parallel flat copper wires that need to be periodically repositioned during transmission to balance magnetic field effects, thereby reducing losses and improving transmission efficiency.

[0003] Chinese patent application CN202120959079.6 discloses a double-sided self-adhesive corrosion-resistant transposed conductor for transformers, comprising: a first corrosion-resistant layer bonded to the inside of an insulation layer; a self-adhesive layer uniformly installed inside the first corrosion-resistant layer; an insulating varnish layer bonded to the inside of the self-adhesive layer; and copper flat wires installed inside the insulating varnish layer. The corrosion-resistant layer outside the self-adhesive layer on the copper flat wire provides corrosion resistance. However, during use, when the conductor is bent or subjected to external force, the position of one or more copper flat wires is prone to displacement, leading to unstable conductor performance, resistance changes, and signal attenuation. Furthermore, when the copper flat wires are displaced, friction occurs between the internal and external layers. Over time, this can damage the surface of the copper flat wire, reducing its conductivity, or even cause it to break, resulting in an open circuit. This not only affects the normal operation of the circuit but also poses a safety hazard.

[0004] Summary of the Invention

[0005] This application provides a corrosion-resistant transposed conductor to address the aforementioned shortcomings in related technologies.

[0006] This application provides a corrosion-resistant transposed conductor, comprising a copper flat wire, a sheath, a corrosion-resistant layer, and an insulation layer. The sheath is disposed outside the copper flat wire, and the insulation layer is disposed outside the corrosion-resistant layer. A limiting structure is provided between the corrosion-resistant layer and the sheath. The limiting structure includes a limiting frame and a placement cavity. The limiting frame is composed of a first limiting shell, a second limiting shell, a third limiting shell, and a fourth limiting shell sequentially spliced ​​from left to right. The limiting frame, composed of the first limiting shell, the second limiting shell, the third limiting shell, and the fourth limiting shell, has a placement cavity for placing the copper flat wire wrapped with the sheath. A splicing assembly is provided at the splicing point of the limiting frame.

[0007] In some embodiments, the splicing assembly includes a slot formed on the inner wall of the second limiting shell of the limiting frame at the connection point with the third limiting shell, and an insert block connected to the outer wall of the third limiting shell at a position corresponding to the slot, wherein the insert block can slide into the slot when the second limiting shell and the third limiting shell are connected.

[0008] In some embodiments, the top of the vertical section of the slot is rotatably connected to an insert via a connecting rod, and the vertical section of the slot is connected to a stop block near the side wall of the third limiting shell. The insert block has a groove, and the interior of the groove is configured to receive the insert so that the insert block abuts against the stop block.

[0009] In some embodiments, the slot is an L-shaped or inverted T-shaped slot.

[0010] In some embodiments, the outer casing includes a tin plating layer, an insulating varnish layer, and a self-adhesive layer. The tin plating layer is disposed on the outer wall of the copper flat wire, the insulating varnish layer is disposed on the outside of the tin plating layer, and the self-adhesive layer is disposed on the outside of the insulating varnish layer.

[0011] In some embodiments, the limiting structure further includes an isolation cavity located near the placement cavity, the interior of which is provided with insulating cable paper.

[0012] In some embodiments, the limiting frame is provided with a cooling structure, the cooling structure including a flexible channel disposed on the inner wall of the limiting frame, and the inner surface of the flexible channel is provided with a waterproof layer.

[0013] In some embodiments, the waterproof layer is made of epoxy resin waterproof coating, and the flexible channel is made of thermoplastic elastomer material.

[0014] In some embodiments, the inner walls of the first limiting shell, the second limiting shell, the third limiting shell, and the fourth limiting shell are each provided with a flexible channel, and a communication component is provided between two adjacent flexible channels. The communication component includes a connecting pipe fixedly connected to the outer wall of one of the flexible channels, one end of the connecting pipe is inserted into a insertion tube, and the end of the insertion tube away from the connecting pipe is connected to the other flexible channel.

[0015] In some embodiments, a sealing ring is fixedly connected to the outer wall of the insertion tube, and the sealing ring is snapped into the connecting end of the connecting tube. Attached Figure Description

[0016] The accompanying drawings used in the embodiments will be described below. The drawings described below are some of the embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of a corrosion-resistant transposed conductor according to this application;

[0018] Figure 2 is a schematic diagram of the limiting structure of this application;

[0019] Figure 3 is an enlarged schematic diagram of the splicing components of this application;

[0020] Figure 4 is a schematic diagram of the assembly process of some of the limiting structures in this application;

[0021] Figure 5 is an enlarged schematic diagram of the insertion of the plug into the slot in this application;

[0022] Figure 6 is a schematic diagram of the connection between the cooling structure and the limiting structure of this application;

[0023] Figure 7 is a cross-sectional schematic diagram of the flexible pipe of this application;

[0024] Figure 8 is a schematic diagram of the connected components of this application;

[0025] Figure 9 is a schematic diagram of the outer shell structure of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Copper flat wire; 2. Outer casing; 21. Self-adhesive layer; 22. Insulating varnish layer; 23. Tin plating layer; 3. Corrosion resistant layer; 4. Insulating layer; 5. Limiting structure; 51. First limiting shell; 52. Second limiting shell; 53. Third limiting shell; 54. Fourth limiting shell; 55. Splicing assembly; 551. Slot; 552. Insert block; 553. Connecting rod; 554. Insert block; 555. Abutment block; 556. Groove; 56. Placement cavity; 57. Isolation cavity; 6. Insulating cable paper; 7. Cooling structure; 71. Flexible channel; 72. Waterproof layer; 73. Connecting assembly; 731. Connecting pipe; 732. Insert pipe; 733. Sealing ring. Detailed Implementation

[0027] This application will now be described in conjunction with the accompanying drawings.

[0028] This application provides a corrosion-resistant transposition conductor as shown in Figures 1 and 9, comprising:

[0029] The system comprises a copper flat wire 1, a sheath 2, a corrosion-resistant layer 3, and an insulation layer 4. The sheath 2 is located outside the copper flat wire 1 and includes a tin-plated layer 23, an insulating varnish layer 22, and a self-adhesive layer 21. The tin-plated layer 23 is located on the outer wall of the copper flat wire 1, and the insulating varnish layer 22 is located on the outside of the tin-plated layer 23. The tin-plated layer 23 prevents the copper flat wire 1 from oxidizing and also slows down the aging of the insulating varnish layer 22. The self-adhesive layer 21, for example, is double-sided self-adhesive, located outside the insulating varnish layer 22. The insulation layer 4 is located outside the corrosion-resistant layer 3, which provides corrosion resistance to the conductor, effectively protecting it and extending its service life. Insulating cable paper 6 is located on one side of the sheath 2, inside the cavity of the limiting frame.

[0030] This application provides a corrosion-resistant transposed conductor as shown in Figures 1 and 2. A limiting structure 5 is provided between the corrosion-resistant layer 3 and the outer casing 2. The limiting structure 5 includes a limiting frame and a placement cavity 56. The limiting frame is composed of a first limiting shell 51, a second limiting shell 52, a third limiting shell 53, and a fourth limiting shell 54, which are sequentially spliced ​​from left to right. The limiting frame formed by splicing the first limiting shell 51, the second limiting shell 52, the third limiting shell 53, and the fourth limiting shell 54 has a placement cavity 56 that wraps the copper flat wire 1 wrapped in the outer casing 2. A splicing assembly 55 is provided at the splicing point of the limiting frame.

[0031] For example, in use, a limiting frame composed of a first limiting shell 51, a second limiting shell 52, a third limiting shell 53 and a fourth limiting shell 54 is disposed outside the plurality of copper flat wires 1. The limiting frame can restrict the position of the plurality of copper flat wires 1 placed in the placement cavity 56, prevent one or more copper flat wires 1 from moving inside the conductor, enhance the overall structural stability of the conductor, and avoid resistance changes and signal attenuation during use.

[0032] In some embodiments, considering that the external of the copper flat wire in the related art does not have a limiting function, it is impossible to effectively control the position of the copper flat wire. This application sets a limiting structure 5 so that the transposition wire has the function of limiting multiple copper flat wires 1. This avoids the defect that the protective shell 2 will fail due to friction between the copper flat wire 1 and other outer layers inside the wire, which would damage the surface of the copper flat wire 1. This ensures the conductivity of the copper flat wire 1 and also prevents the copper flat wire 1 from breaking and causing an open circuit. It does not affect the normal operation of the circuit and improves the safety of the wire during use.

[0033] In some embodiments, the limiting structure 5 further includes an isolation cavity 57 located near the placement cavity 56, and the isolation cavity 57 is provided with insulating cable paper 6 inside. For example, referring to FIG2, the second limiting shell 52 and the third limiting shell 53 are spliced ​​together to form an isolation cavity 57, which is located near all the placement cavities 56 (FIG. 2 shows nine placement cavities 56). It is understood that by providing insulating cable paper 6 in the isolation cavity 57, insulation can be achieved, preventing short circuits between adjacent copper flat wires 1 and ensuring normal current transmission. Furthermore, separating different copper flat wires 1 can avoid mutual interference and friction.

[0034] In some embodiments, referring to Figures 3-5, the splicing assembly 55 includes a slot 551 formed on the inner wall of the second limiting shell 52 of the limiting frame and connected to the third limiting shell 53, and an insert 552 connected to the outer wall of the third limiting shell 53 at a position corresponding to the slot 551. When the second limiting shell 52 and the third limiting shell 53 are connected, the insert 552 can slide into the slot 551. The slot 551 is an L-shaped or inverted T-shaped slot. The top of the vertical section of the slot 551 is rotatably connected to an insert 554 through a connecting rod 553. The vertical section of the slot 551 is connected to a stop block 555 near the side wall of the third limiting shell 53. The insert 552 has a groove 556. The interior of the groove 556 is configured to receive the insert 554 so that the insert 554 abuts against the stop block 555.

[0035] For example, during assembly, the insert 552 is inserted into the slot 551. During insertion, one end of the insert 552 contacts the insert 554. As it is inserted, the insert 554 changes from a vertical position to an inclined position. After it is inserted into place, the inclined insert 554 slides from the first end of the slot 556 to the second end of the slot 556. The side wall of the insert 554 contacts the abutment 555, thus completing the assembly of the limiting frame. The assembled limiting frame makes it easy to place the copper flat wire 1 flat in the placement cavity 56, ensuring the overall structural stability of the conductor.

[0036] This application provides a corrosion-resistant transposition conductor as shown in Figures 6-8. A cooling structure 7 is provided on the limiting frame. The cooling structure 7 includes a flexible channel 71 disposed on the inner wall of the limiting frame, and a waterproof layer 72 is provided on the inner surface of the flexible channel 71. The waterproof layer 72 is made of epoxy resin waterproof coating, which serves to prevent coolant from flowing out of the flexible channel 71 and also has good corrosion resistance and wear resistance. The flexible channel 71 is made of thermoplastic elastomer material, which has good elasticity and flexibility, allowing the limiting frame to bend according to the conductor's curvature, ensuring smooth flow of coolant inside the conductor.

[0037] In some embodiments, the inner walls of the first limiting shell 51, the second limiting shell 52, the third limiting shell 53 and the fourth limiting shell 54 are each provided with a flexible channel 71, and a communication component 73 is provided between two adjacent flexible channels 71. The communication component 73 includes a connecting pipe 731 fixedly connected to the outer wall of one of the flexible channels 71, one end of the connecting pipe 731 is inserted into a insertion tube 732, and the end of the insertion tube 732 away from the connecting pipe 731 is connected to the other flexible channel 71.

[0038] In some embodiments, a sealing ring 733 is fixedly connected to the outer wall of the insertion tube 732, and the sealing ring 733 is snapped into the connection end of the connecting tube 731.

[0039] For example, during use, coolant is introduced into the interior of the flexible channel 71 in the inner wall of the limiting frame. The flexible channel 71 in the limiting shell (including the first limiting shell 51, the second limiting shell 52, the third limiting shell 53, and the fourth limiting shell 54) is connected through the connection of the connecting pipe 731 and the insertion pipe 732, so that the coolant can be evenly distributed around the copper flat wire 1. This can remove the heat generated by the current passing through the copper flat wire 1, so that the copper flat wire 1 can be effectively cooled and dissipated. This ensures that the copper flat wire 1 is always kept at a low temperature level during operation, avoids local overheating, prevents the copper flat wire 1 from aging and being damaged due to overheating, and extends the service life of the wire.

[0040] In some embodiments, by providing a cooling structure 7, the limiting structure 5 is equipped with a cooling function, which also allows the wire to maintain a low temperature, effectively reducing resistance changes and thus reducing signal attenuation during transmission.

Claims

1. A corrosion-resistant transposed conductor, comprising: The copper flat wire (1), the outer shell (2), the corrosion resistant layer (3) and the insulation layer (4) are provided. The outer shell (2) is located outside the copper flat wire (1), the insulation layer (4) is located outside the corrosion resistant layer (3), and a limiting structure (5) is provided between the corrosion resistant layer (3) and the outer shell (2). The limiting structure (5) includes a limiting frame and a placement cavity (56). The limiting frame is composed of a first limiting shell (51), a second limiting shell (52), a third limiting shell (53), and a fourth limiting shell (54) assembled from left to right. The limiting frame, composed of the first limiting shell (51), the second limiting shell (52), the third limiting shell (53), and the fourth limiting shell (54), has a placement cavity (56) for placing the copper flat wire (1) wrapped with the outer shell (2). A splicing component (55) is provided at the splicing point of the limiting frame.

2. The corrosion-resistant transposition conductor according to claim 1, wherein, The splicing assembly (55) includes a slot (551) formed on the inner wall of the second limiting shell (52) of the limiting frame and connected to the third limiting shell (53), and an insert (552) connected to the outer wall of the third limiting shell (53) at a position corresponding to the slot (551). When the second limiting shell (52) and the third limiting shell (53) are connected, the insert (552) can slide into the slot (551).

3. The corrosion-resistant transposition conductor according to claim 2, wherein, The top of the vertical section of the slot (551) is rotatably connected to an insert (554) via a connecting rod (553). The vertical section of the slot (551) is connected to a stop block (555) near the side wall of the third limiting shell (53). The insert (552) has a groove (556) and the interior of the groove (556) is configured to receive the insert (554) so ​​that the insert (554) abuts against the stop block (555).

4. A corrosion-resistant transposition conductor according to claim 2 or 3, wherein, The slot (551) is an L-shaped or inverted T-shaped slot.

5. The corrosion-resistant transposition conductor according to claim 1, wherein, The outer casing (2) includes a tin plating layer (23), an insulating varnish layer (22), and a self-adhesive layer (21). The tin plating layer (23) is disposed on the outer wall of the copper flat wire (1), the insulating varnish layer (22) is disposed on the outside of the tin plating layer (23), and the self-adhesive layer (21) is disposed on the outside of the insulating varnish layer (22).

6. The corrosion-resistant transposition conductor according to claim 1, wherein, The limiting structure (5) also includes an isolation cavity (55) located near the placement cavity (56), and the interior of the isolation cavity (55) is provided with isolation cable paper (6).

7. The corrosion-resistant transposition conductor according to claim 1, wherein, The limiting frame is provided with a cooling structure (7), the cooling structure (7) includes a flexible channel (71) provided on the inner wall of the limiting frame, and the inner surface of the flexible channel (71) is provided with a waterproof layer (72).

8. The corrosion-resistant transposition conductor according to claim 7, wherein, The waterproof layer (72) is made of epoxy resin waterproof coating, and the flexible channel (71) is made of thermoplastic elastomer material.

9. A corrosion-resistant transposition conductor according to claim 7 or 8, wherein, Each of the inner walls of the first limiting shell (51), the second limiting shell (52), the third limiting shell (53), and the fourth limiting shell (54) is provided with a flexible channel (71). A connecting component (73) is provided between two adjacent flexible channels (71). The connecting component (73) includes a connecting pipe (731) fixedly connected to the outer wall of one of the flexible channels (71). One end of the connecting pipe (731) is inserted into a insertion tube (732), and the end of the insertion tube (732) away from the connecting pipe (731) is connected to the other flexible channel (71).

10. A corrosion-resistant transposition conductor according to claim 9, wherein, A sealing ring (733) is fixedly connected to the outer wall of the insertion tube (732), and the sealing ring (733) is embedded in the connecting end of the connecting tube (731).

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