A new arrangement of fan-shaped stranded conductors

Abstract

The utility model relates to cable conductor manufacturing technical field, concretely to a new type of arrangement structure of fan -shaped stranded conductor, including cable body, the inside of cable body is provided with arrangement subassembly, the both sides bottom end inner wall of cable body all are installed with reinforcing component, the outer surface of cable body is installed with fastening assembly. The utility model discloses through adopting special threading position, the fan angle of fan -shaped conductor can use single or multiple stranded, thereby make the cable body bending when using can not appear the phenomenon of jumper back muscle.

Description

Technical Field

[0001] This utility model relates to the field of conductor manufacturing technology in cables, specifically a novel arrangement structure of fan-shaped stranded conductors. Background Technology

[0002] Cables are conductors covered with insulation, protective layers, and shielding layers used to transmit electrical or signal current and voltage. They can be classified into high-voltage cables and low-voltage cables based on voltage.

[0003] In response, the existing technology patent number CN219497406U discloses a DC oil-impregnated paper high-voltage aluminum alloy cable with suppressed thermal expansion, including an aluminum alloy conductor, an oil-impregnated paper insulation layer, an aluminum alloy sheath layer, an XLPE insulation layer, a high-temperature fiberglass tape reinforced wrapping layer, a stainless steel tape armor layer, a nylon anti-corrosion layer, and a PVC outer sheath. The aluminum alloy conductor includes an annular conductor structure with a central hole formed by twisting several fan-shaped conductors. Stainless steel wire strands are arranged in the gaps inside the central hole. The fan-shaped conductor is composed of several strands of wire twisted together and tightly pressed into a fan-shaped structure. The strands are composed of several aluminum alloy wires twisted together, and the twisting direction of the aluminum alloy wires is opposite to that of the strands.

[0004] Traditional low-voltage cable conductors often employ a fan-shaped, tightly stranded structure, which has the following drawbacks: 1. Waste of space: When circular cross-section cables are laid in cable trays, the fill rate is only 40-50%; 2. Uneven heat dissipation: The temperature rise of the center core is 15-20℃ higher than that of the outer layer, which accelerates insulation aging; 3. Process defects: The edges of conventional sector conductors are loose and the compaction is insufficient, making them prone to "flipping" when bent. Therefore, improving and perfecting the above-mentioned problems is an urgent issue to be addressed. Utility Model Content

[0005] The purpose of this utility model is to provide a novel arrangement structure of fan-shaped stranded conductors to solve the problems mentioned in the background art, such as the circular cross-section cable having a filling rate of only 40-50% when laid in cable trays, the temperature rise of the center core being 15-20°C higher than that of the outer layer, which accelerates insulation aging, and the loose edges and insufficient compaction of conventional fan-shaped conductors, which easily cause "flipping" when bent.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel arrangement structure of a fan-shaped stranded conductor, comprising a cable body, wherein an arrangement assembly is provided inside the cable body, a reinforcing assembly is installed on the inner walls of both bottom ends of the cable body, and a fastening assembly is installed on the outer surface of the cable body. The arrangement assembly includes an outer layer wire, a center wire, and a transition wire. The outer layer wire, center wire, and transition wire are installed sequentially from top to bottom. The center wire consists of seven round annealed copper wires twisted in a right-to-right circular pattern. The transition wire consists of two annealed copper single-wire guide wires that do not participate in the twisting. The outer layer wire consists of fifteen annealed single wires twisted in a left-to-right pattern through a fan-shaped drawing die.

[0007] Preferably, two of the transition lines do not participate in the twisting and satisfy the dynamic balance of the equipment.

[0008] Preferably, the outer layer of the outer layer has a compression coefficient greater than 93%, and bending will not result in skipped threads, back strands, or other phenomena.

[0009] Preferably, the reinforcement component includes a stabilizing wedge, which is installed on the inner wall of the edge of the cable body, and an abutment block is installed inside the stabilizing wedge, and an abutment block is installed on the upper surface of the stabilizing wedge.

[0010] Preferably, the fastening assembly includes a top block and side blocks. The top block is mounted on the top surface of the cable body, and two sets of side blocks are provided, with the two sets of side blocks respectively mounted on the front and rear surfaces of the cable body.

[0011] Preferably, the top surface of the top block is fitted with a mounting frame, and the interior of the mounting frame is provided with an elastic strip.

[0012] Preferably, the two ends of the elastic strip are respectively connected to two sets of side blocks, and an abutment plate is installed at the lower end of the elastic strip, and a stabilizing pad is installed on the lower surface of the abutment plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The novel arrangement structure of this fan-shaped stranded conductor features a composite layered design. The center wire consists of seven annealed copper wires with a diameter of d, regularly stranded. The transition wires use 2*1*d or 2*3*d wires and do not participate in the stranding, serving as horizontal guide wires. The outer layer wires are regularly stranded with a strand count of -3 and are used as guide wires without participating in the stranding. The stranding direction of the interlayer is opposite, and a special threading position is used. The fan-shaped corner of the conductor can be stranded with one or more wires, thus preventing jumpers and back strands when the cable body is bent during use.

[0014] 2. The novel arrangement structure of this sector-shaped stranded conductor enhances the stability of the cable body during use through the fixing posts and contact blocks. At the same time, the elastic strips are installed on the outer surfaces of the two sets of side blocks at both ends, and the elastic strips are installed through the interior of the mounting frame. The elasticity of the elastic strips ensures that they are always in contact with the outer surface of the cable body. The elastic strips can also stably press the contact plates and stabilizing pads against the outer surface of the cable body, thereby enhancing the stability of the cable body after the arrangement is completed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the stable inclined block structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the side block and elastic strip structure of this utility model; Figure 4 This is a three-dimensional schematic diagram of the elastic strip and mounting frame structure of this utility model; Figure 5 This is a three-dimensional schematic diagram of the contact plate and stabilizing pad structure of this utility model.

[0016] In the diagram: 1. Cable body; 2. Outer cable body; 3. Center cable body; 4. Transition cable body; 5. Stabilizing wedge; 6. Fixing post; 7. Contact block; 8. Top block; 9. Side block; 10. Mounting frame; 11. Elastic strip; 12. Contact plate; 13. Stabilizing pad. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 One embodiment provided by this utility model: A novel arrangement structure of a sector-shaped stranded conductor. The outer layer 2, center layer 3 and transition layer 4 used in this application are all products that can be directly purchased on the market. Their principles and connection methods are existing technologies known to those skilled in the art, so they will not be described in detail here. It includes a cable body 1. The cable body 1 is provided with an arrangement assembly inside. The inner walls of the bottom ends on both sides of the cable body 1 are equipped with reinforcement assemblies. The outer surface of the cable body 1 is equipped with fastening assemblies. The arrangement assembly includes an outer layer wire 2, a center wire 3, and a transition wire 4. These three wires are installed sequentially from top to bottom. The center wire 3 consists of seven round annealed copper wires twisted in a regular, right-to-right circular pattern. The transition wire 4 consists of two annealed copper single-wire guide wires that do not participate in the twisting. The outer layer wire 2 consists of fifteen annealed single wires twisted in a left-to-right pattern using a fan-shaped drawing die. This arrangement assembly features a composite layered design. The center wire 3 consists of seven annealed copper wires with a diameter of d, regularly twisted. The transition wire 4 uses 2*1*d or 2*3*d wires and does not participate in the twisting, serving as a horizontal guide wire structure. The outer layer wire 2 is produced by twisting a wire with a regular twist count minus three. The outer layer wire 2 uses guide wires and does not participate in the twisting. The twisting direction of each layer is opposite, and a special threading position is used. The fan-shaped conductor's fan corner can be twisted with single or multiple wires, thus preventing jumpers and back strands when the cable body 1 is bent during use.

[0019] Two strands of the transition wire 4 do not participate in the twisting and meet the dynamic balance requirements of the equipment. The outer layer wire 2 has a compression coefficient greater than 93%, preventing skipped wires and back strands when bent. A three-stage stepped compression mold is used: the first stage has a compression coefficient of 85%, forming a regular twisted circle; the second stage has a compression rate of 0%, embedding the transition layer wire core; the third stage has a compression coefficient of 93%, completing the outer fan-shaped wire. The core of the center wire 3 is compressed to the right using a circular mold; the core of the transition wire 4 consists of two annealed copper monofilaments that do not participate in the twisting; the fan-shaped core of the outer layer wire 2 is simultaneously twisted to the left. The transition wire 4 uses a bakelite pressing mold to keep the two monofilaments horizontal, so that when the outer layer is twisted, these two wires are exactly at the fan foot position.

[0020] Based on the equipment's construction, a composite arrangement structure is used (when the frame stranding machine produces 120mm² / sector-shaped conductors, a 2+8+14 structure is used; each section of the frame stranding machine has three rows, meaning that only single-filament coils that are multiples of three do not require counterweights; the outermost layer of the conductor rotates left-right; when producing 120mm² conductors, each section rotates right-left-right; 6B, 12B, and 18B are used for producing 120mm² conductors; the new arrangement structure is 1+6+2+15). The first two sections use regular stranding; the third section has two single-filament coils, one at each of the two sector corners; the fourth section has three rows, five coils per row, participating in the stranding process. The outermost layer has a compression coefficient as high as 95%, a resistance margin of less than 1%, and will not experience skipped strands or back strands when bent.

[0021] The reinforcement component includes a stabilizing wedge 5, which is installed on the inner wall of the edge of the cable body 1. An abutment block 7 is installed inside the stabilizing wedge 5, and an abutment block 7 is installed on the upper surface of the stabilizing wedge 5.

[0022] The fastening assembly includes a top block 8 and side blocks 9. The top block 8 is mounted on the top surface of the cable body 1, and two sets of side blocks 9 are provided, with the two sets of side blocks 9 respectively mounted on the front and rear surfaces of the cable body 1. By installing the stabilizing inclined blocks 5 as a whole at the bottom edges of both sides of the outer cable body 2, the front and rear edges of the outer cable body 2 can be kept stable. The fixing posts 6 and the abutment blocks 7 can enhance the stability of the cable body 1 during use. A mounting frame 10 is installed on the top surface of the top block 8, and an elastic strip 11 is provided inside the mounting frame 10. The two ends of the elastic strip 11 are connected to two sets of side blocks 9 respectively. A contact plate 12 is installed at the lower end of the elastic strip 11, and a stabilizing pad 13 is installed on the lower surface of the contact plate 12. The elastic strip 11 is installed on the outer surface of the two sets of side blocks 9 through both ends, and extends through the interior of the mounting frame 10. The elasticity of the elastic strip 11 ensures it remains in contact with the outer surface of the cable body 1. The elastic strip 11 also ensures that the contact plate 12 and the stabilizing pad 13 are stably pressed against the outer surface of the cable body 1, thereby enhancing the stability of the cable body 1 after it is arranged.

[0023] Working principle: The arrangement components of this device are designed as a composite layered structure. The center wire 3 consists of seven annealed copper wires with a diameter of d, which are regularly twisted together. The transition wire 4 uses 2*1*d or 2*3*d wires and does not participate in the twisting. It serves as a horizontal guide wire. The outer wire 2 is produced by twisting with a regular twisting number of strands minus 3. The outer wire 2 is used as a guide wire and does not participate in the twisting. The twisting direction of the interlayer is opposite. A special wire threading position is used. The fan corner of the fan-shaped conductor can be twisted with one or more strands, so that the cable body 1 will not have jumper or back strand phenomenon when it is bent during use. By installing the stabilizing inclined block 5 as a whole at the bottom edges of both sides of the outer layer cable body 2, the front and rear edges of the outer layer cable body 2 can be kept stable. The fixing column 6 and the abutment block 7 can enhance the stability of the cable body 1 during use. At the same time, the two ends of the elastic strip 11 are installed on the outer surface of the two sets of side blocks 9, and the elastic strip 11 is installed through the inside of the mounting frame 10. The elasticity of the elastic strip 11 can always fit against the outer surface of the cable body 1. The elastic strip 11 can stably abut the abutment plate 12 and the stabilizing pad 13 against the outer surface of the cable body 1. The above is the working principle of this utility model.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel arrangement structure of sector-shaped stranded conductors, comprising a cable body (1), characterized in that: The cable body (1) is provided with an arrangement assembly inside, and the inner walls of the bottom ends of both sides of the cable body (1) are equipped with reinforcement assemblies, and the outer surface of the cable body (1) is equipped with fastening assemblies. The arrangement assembly includes an outer wire body (2), a center wire body (3), and a transition wire body (4). The outer wire body (2), the center wire body (3), and the transition wire body (4) are installed sequentially from top to bottom. The center wire body (3) is formed by seven round annealed copper wires twisted in a regular circular shape from right to left. The transition wire body (4) is formed by two annealed copper single wires that do not participate in the twisting. The outer wire body (2) is formed by fifteen annealed single wires twisted in a fan-shaped drawing die from left to right.

2. The novel arrangement structure of a sector-shaped stranded conductor according to claim 1, characterized in that: The outer layer of the outer layer (2) has a compression coefficient of more than 93%, and there will be no skipping or back strands when bending.

3. The novel arrangement structure of a sector-shaped stranded conductor according to claim 1, characterized in that: The reinforcement component includes a stabilizing ramp (5), which is installed on the inner edge of the cable body (1). An abutment block (7) is installed inside the stabilizing ramp (5), and an abutment block (7) is installed on the upper surface of the stabilizing ramp (5).

4. The novel arrangement structure of a sector-shaped stranded conductor according to claim 1, characterized in that: The fastening assembly includes a top block (8) and a side block (9). The top block (8) is installed on the top surface of the cable body (1), and the side blocks (9) are provided in two sets, which are respectively installed on the front and rear surfaces of the cable body (1).

5. A novel arrangement structure of a sector-shaped stranded conductor according to claim 4, characterized in that: The top surface of the top block (8) is equipped with an installation frame (10), and an elastic strip (11) is provided inside the installation frame (10).

6. A novel arrangement structure of a sector-shaped stranded conductor according to claim 5, characterized in that: The two ends of the elastic strip (11) are respectively connected to two sets of side blocks (9), and the lower end of the elastic strip (11) is equipped with an abutment plate (12), and the lower surface of the abutment plate (12) is equipped with a stabilizing pad (13).

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