Conductor structure, conductor production mold and power system

Abstract

The utility model relates to a kind of wire structure, wire production mould and electric power system, including bearing core and conducting layer;Bearing core includes multiple stranded core wires;Conducting layer is provided with multiple layers and is sequentially coated in bearing core outside, gap is filled with ceramic particles between adjacent conducting layer, each conducting layer includes multiple stranded wire strand, respectively set in any two wire strands One group of light units, respectively set in the remaining each wire strand One reinforcing part.This wire structure is embedded by setting multiple layers of carbon fiber reinforcing part in conducting layer, improve the tensile strength of wire while reducing the weight of wire, and fill ceramic particles between conducting layer to improve the damping performance of wire, reduce the fatigue loss of wire in breeze vibration process, reduce the possibility of wire breakage, improve the service life of wire;While by setting light unit in single wire Realize real-time monitoring and signal transmission to wire operating state, provide the basis for the construction of smart grid.

Description

Technical Field

[0001] This utility model relates to the field of conductor technology, and in particular to a conductor structure, conductor production mold and power system. Background Technology

[0002] With the large-scale construction of ultra-high-voltage power transmission projects in my country, long-span transmission lines (such as those crossing mountain valleys, rivers, and other complex terrains) have become a key component in solving the energy allocation problems of "west-to-east power transmission" and "north-to-south power transmission" and achieving "dual carbon targets." These lines are characterized by large spans, harsh environments, and high maintenance difficulty.

[0003] With the further increase in conductor span and the frequent occurrence of extreme weather, conductors need to withstand higher comprehensive tension, such as wind vibration and icing load. The tensile strength margin of existing conductors is insufficient, and they are prone to breakage when used in large spans and harsh environments, which cannot guarantee the safe operation of the line. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the tensile strength margin of the conductor in the prior art is insufficient, which makes it easy to break when used in large spans and harsh environments, and thus cannot guarantee the safe operation of the line.

[0005] To solve the above-mentioned technical problems, this utility model provides a wire structure, including,

[0006] The load-bearing core comprises multiple strands of core wire twisted together.

[0007] The conductive layer comprises multiple layers that sequentially cover the load-bearing core. Each adjacent conductive layer has a gap filled with ceramic particles. Each conductive layer includes multiple strands of wire twisted together. In each of any two strands of wire, a set of optical units is provided, and in each of the remaining strands of wire, a reinforcing member is provided.

[0008] In one embodiment of this utility model, the strands of the conductors in adjacent conductive layers are twisted in opposite directions, and the strands of the conductors in the outermost conductive layer are twisted to the right.

[0009] In one embodiment of the present invention, the optical unit includes a stainless steel tube and optical fibers, wherein multiple optical fibers are disposed in the stainless steel tube, and fiber grease is filled between the stainless steel tube and the optical fibers.

[0010] In one embodiment of this utility model, the two sets of optical units are a communication optical unit for signal transmission and a monitoring optical unit for signal monitoring, respectively.

[0011] In one embodiment of this utility model, the two sets of optical units are respectively disposed in the two strands of the conductive layer located in the innermost layer.

[0012] In one embodiment of this utility model, the reinforcing member is made of carbon fiber rope.

[0013] In one embodiment of this utility model, the conductor strand is a high-strength heat-resistant aluminum alloy wire with a trapezoidal cross-section.

[0014] In one embodiment of this utility model, the core wire is made of ultra-high strength galvanized steel wire.

[0015] A wire production mold for preparing wire structures as described in any one of the above, comprising two symmetrically arranged forming molds, each of the two forming molds having a semi-circular groove on a side close to each other, forming a first feeding channel between the two grooves, and each of the two forming molds having a second feeding channel.

[0016] An electric power system comprising a conductor structure as described in any of the preceding claims.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] This utility model discloses a conductor structure, conductor production mold, and power system. By setting multiple conductive layers with embedded carbon fiber reinforcements, the tensile strength of the conductor is improved while reducing its weight, thereby reducing tower load and economic costs. Furthermore, gaps are set between the conductive layers and filled with ceramic particles to improve the conductor's damping performance. The frictional energy dissipation of the internal ceramic particles during the conductor's aerodynamic vibration reduces fatigue loss during aerodynamic vibration, lowers the possibility of conductor breakage, and increases the conductor's service life. At the same time, by setting optical units in a single line, real-time monitoring and signal transmission of the conductor's operating status are achieved, providing a foundation for the construction of smart grids. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the conductor structure according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the conductor strands in a preferred embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the optical unit of the wire structure according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the wire production mold in Example 2.

[0024] Explanation of reference numerals in the accompanying drawings: 1. Supporting core; 11. Core wire; 2. Conductive layer; 21. Conductor strand; 3. Ceramic particles; 4. Optical unit; 41. Stainless steel tube; 42. Optical fiber; 5. Reinforcing member; 6. Anti-corrosion grease; 7. Molding mold; 71. First feeding channel; 72. Second feeding channel. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0026] Example 1: Refer to Figure 1 , Figure 2 and Figure 3 As shown, a wire structure of this utility model includes,

[0027] The load-bearing core 1 includes multiple intertwined core wires 11;

[0028] The conductive layer 2 has multiple layers and is sequentially wrapped around the load-bearing core 1. There are gaps between adjacent conductive layers 2 and they are filled with ceramic particles 3. Each conductive layer 2 includes multiple strands of wire 21 twisted together. In any two strands of wire 21, a set of optical units 4 is provided. In each of the remaining strands of wire 21, a reinforcing member 5 is provided.

[0029] Specifically, in this embodiment, the conductive layer 2 has three layers, namely, a first conductive layer, a second conductive layer, and a third conductive layer from the inside out. Each conductive layer 2 is made of multiple high-strength heat-resistant aluminum alloy wires (i.e., conductor strands) twisted together. In the first conductive layer, a set of optical units 4 is coaxially arranged in any two conductor strands 21, and a carbon fiber reinforcing member 5 is coaxially arranged in each of the remaining conductor strands 21. Furthermore, ceramic particles 3 are filled between the second conductive layer and the first and third conductive layers. By embedding the carbon fiber reinforcing member 5 in the conductor strands 21, the tensile strength of a single wire is effectively improved and the weight of the entire conductor is reduced, thereby reducing the tower load and lowering economic costs. At the same time, the conductive layers 2 adopt a gap-type structure, and the gaps are filled with ceramic particles 3 to improve the damping performance of the conductor. Through the frictional energy dissipation of the internal ceramic particles during the conductor's micro-wind vibration process, the fatigue loss of the conductor during micro-wind vibration is reduced, and the service life of the conductor is improved.

[0030] Furthermore, the strands 21 of the conductors in adjacent conductive layers 2 are twisted in opposite directions, and the strands 21 of the conductors in the outermost conductive layer 2 are twisted to the right. The diameter ratio of the outer layer is not greater than that of the adjacent inner layer and a certain gradient difference is guaranteed.

[0031] Furthermore, the optical unit 4 includes a stainless steel tube 41 and an optical fiber 42. Multiple optical fibers 42 are disposed in the stainless steel tube 41, and fiber grease is filled between the stainless steel tube 41 and the optical fiber 42.

[0032] Furthermore, the two sets of optical units 4 are respectively a communication optical unit for signal transmission and a monitoring optical unit for signal monitoring. Specifically, in order to realize online monitoring of the conductor's operating status and signal transmission, optical units 4 need to be added to the conductor. To ensure the conductor's load-bearing capacity and service life, this conductor structure adds optical units 4 to each individual conductor strand 21, one of which is responsible for online monitoring of the conductor's operating status, and the other is used for signal transmission.

[0033] Furthermore, the two sets of optical units 4 are respectively disposed in the two wire strands 21 of the innermost conductive layer 2. It is conceivable that the innermost conductive layer 2 is less affected by the external environment, which can reduce the interference of mechanical factors such as wind, rain, and vibration on the optical units 4. At the same time, it can reduce the electromagnetic interference generated by the outer current, ensure stable optical signal transmission, improve signal transmission quality and monitoring accuracy, and effectively avoid physical damage caused by direct collision and friction with external objects, extend the service life of the optical units 4, and reduce maintenance costs and frequency. At the same time, this arrangement allows the optical units 4 to be closer to the core area of ​​the wire, and the monitoring optical units can more accurately sense key parameters such as temperature and stress inside the wire, and timely grasp the operating status of the wire.

[0034] Furthermore, reinforcement component 5 uses carbon fiber rope.

[0035] Furthermore, conductor strand 21 is made of high-strength heat-resistant aluminum alloy wire with a trapezoidal cross-section. Specifically, when the cross-sectional area of ​​the conductive layer 2 of the conductor remains unchanged, the allowable operating temperature of the conductor becomes the main factor affecting the current carrying capacity of the conductor. To increase the allowable operating temperature of the conductor, this conductor structure uses high-strength heat-resistant aluminum alloy material (single wire strength 225Mpa-248Mpa, conductivity 55.0%IACS) instead of traditional 6-series high-strength aluminum alloy wire (single wire strength 315Mpa-325Mpa, conductivity 52.5%IACS), increasing the allowable operating temperature of the conductor from 70℃ to 150℃. At the same time, the high-strength heat-resistant aluminum alloy material can also effectively reduce the overall DC resistance of the conductor and increase the current carrying capacity of the conductor line. Meanwhile, to ensure the overall load-bearing performance of the conductor, carbon fiber (single wire tensile strength ≥2000MPa) is embedded in the aluminum alloy single wire, effectively improving the tensile strength of the conductor. Moreover, since carbon fiber has a lower density than aluminum, it can reduce the overall weight of the conductor. Under the premise of ensuring the safe operation of the conductor, the load on the tower can be reduced, thus reducing economic costs. Specifically, the trapezoidal wires can form supports during the stranding process, ensuring that the interlayer gap structure of the conductors does not collapse.

[0036] Furthermore, core wire 11 is made of ultra-high strength galvanized steel wire. Specifically, to ensure the overall load-bearing capacity of the conductor, higher strength galvanized steel cores such as G6A and G7A are selected to replace G4A and G5A as the load-bearing core, ensuring that the overall load-bearing capacity of the conductor meets the requirements. Simultaneously, due to the harsh environment of the long-span areas, which are often canyons and rivers, to improve the conductor's service life and corrosion resistance, anti-corrosion grease 6 is filled between the load-bearing core 1 and the conductive layer 2 to reduce electrochemical corrosion and extend the conductor's service life. Specifically, core wire 11 is oiled during the stranding process to reduce electrochemical corrosion caused by contact between core wire 11 and the conductive layer, thereby improving the conductor's service life.

[0037] Example 2: Refer to Figure 4 As shown, this utility model also discloses a wire production mold for preparing the wire structure as in Example 1. It includes two symmetrically arranged forming molds 7. A semi-circular groove is provided on the side of the two forming molds 7 that is close to each other. A first feeding channel 71 for light unit or reinforcing member to pass through is formed between the two grooves. A second feeding channel 72 for aluminum alloy material to pass through is provided on both forming molds 7.

[0038] Specifically, since the optical unit 4 or the reinforcing member 5 needs to be embedded in the conductor strand 21 of the conductor, the manufacturing method of the single wire is different from the traditional wire drawing process and is produced by aluminum extrusion process; the first feeding channel 71 formed between the two forming dies 7 is used for positioning and feeding of the optical unit or the reinforcing member, and the two second feeding channels 72 located on both sides of the first feeding channel 71 are aluminum alloy feeding areas.

[0039] The production process is as follows: First, the forming mold 7 is preheated to a predetermined temperature. Then, high-strength heat-resistant aluminum alloy is extruded, and simultaneously, the optical unit 4 or reinforcing member 5 is fed in. After passing through the shaping zone for shaping and cooling, the wire is then wound into a coil. The stranding process of the conductor is similar to that of traditional stranding methods. During the stranding process, ceramic particles 3 are filled into the gap layer.

[0040] Example 3: This utility model also discloses a power system, including the conductor structure as in Example 1.

[0041] Specifically, the conductor operates as follows: The conductor is erected between two towers. Temperature monitoring equipment is installed on the towers to monitor the real-time temperature of the conductor, measured by optical unit 4 inside the conductor, preventing overheating risks caused by conductor overload or poor contact. The towers are also equipped with ambient temperature, humidity, and wind speed monitoring devices. Based on the conductor's real-time operating temperature, the maximum allowable current-carrying capacity is dynamically calculated to optimize transmission capacity (dynamic capacity expansion). Mechanical sensors and image analysis and recognition equipment are also installed to measure conductor sag in real time, preventing faults caused by excessive sag. Electronic transformers are also installed to collect real-time current and voltage data. The signal transmission and control feedback process all rely on optical fiber transmission within the conductor to transmit monitoring data to the data monitoring center in real time.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A conductor structure, characterized in that: include, The load-bearing core comprises multiple strands of core wire twisted together. The conductive layer comprises multiple layers that sequentially cover the load-bearing core. Each adjacent conductive layer has a gap filled with ceramic particles. Each conductive layer includes multiple strands of wire twisted together. In each of any two strands of wire, a set of optical units is provided, and in each of the remaining strands of wire, a reinforcing member is provided.

2. The conductor structure according to claim 1, characterized in that: The strands of the conductors in adjacent conductive layers are twisted in opposite directions, and the strands of the conductors in the outermost conductive layer are twisted to the right.

3. The conductor structure according to claim 1, characterized in that: The optical unit includes a stainless steel tube and optical fibers. Multiple optical fibers are disposed in the stainless steel tube, and fiber grease is filled between the stainless steel tube and the optical fibers.

4. The conductor structure according to claim 1, characterized in that: The two sets of optical units are a communication optical unit for signal transmission and a monitoring optical unit for signal monitoring, respectively.

5. The conductor structure according to claim 1, characterized in that: The two sets of optical units are respectively disposed in the two strands of the conductive layer located in the innermost layer.

6. The conductor structure according to claim 1, characterized in that: The reinforcing component is made of carbon fiber rope.

7. The conductor structure according to claim 1, characterized in that: The conductor strands are made of high-strength, heat-resistant aluminum alloy wire with a trapezoidal cross-section.

8. The conductor structure according to claim 1, characterized in that: The core wire is made of ultra-high strength galvanized steel wire.

9. A conductor manufacturing mold for preparing the conductor structure as described in any one of claims 1-8, characterized in that: It includes two symmetrically arranged molding dies, each with a semi-circular groove on its side that is close to each other, forming a first feeding channel between the two grooves, and each molding die has a second feeding channel.

10. An electric power system, characterized in that: Includes the wire structure as described in any one of claims 1-8.

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