Anti-icing cable

Abstract

The present application relates to the technical field of cables, and provides an anti-icing cable. The anti-icing cable comprises at least one internal load-bearing core, an internal conductive layer, and at least one external conductive layer, wherein the internal conductive layer wraps the internal load-bearing core, the at least one external conductive layer wraps the internal conductive layer, an inner side edge of the cross section of the external conductive layer defines a circular shape, and an outer side edge of the cross section of the external conductive layer defines an elliptical shape. In the anti-icing cable provided in the present application, the outer side edge of the external conductive layer is elliptical, so that during icing, ice and snow are more likely to shed from the cable, thereby improving the anti-icing performance of conductors.

Description

Anti-icing cables Technical Field

[0001] This application relates to cable technology, and more particularly to an anti-icing cable. Background Technology

[0002] As a crucial component of power transmission lines, the performance of cables directly impacts the transmission efficiency and safety of these lines. In cold, rainy, or snowy weather, cables are prone to icing, which not only increases cable weight, causing sagging and structural damage, but can also lead to power outages and safety accidents.

[0003] In related technologies, to avoid ice accumulation on cables affecting their performance, a smooth material is usually coated on the cables or an additional conductor heating device is installed. However, these methods all increase the additional manufacturing cost of the cables, making the construction and subsequent maintenance of transmission lines more difficult and limiting.

[0004] Utility Model Content

[0005] This application provides an anti-icing cable to solve the technical problem in the related art that cables are easily affected by icing and thus cannot function normally.

[0006] This application provides an anti-icing cable, comprising:

[0007] At least one internal load-bearing core;

[0008] An internal conductive layer encapsulates the internal load-bearing core;

[0009] At least one outer conductive layer surrounds the inner conductive layer, wherein the inner edge of the cross-section of the outer conductive layer is circular and the outer edge of the cross-section of the outer conductive layer is elliptical.

[0010] In one possible implementation, the anti-icing cable in this application embodiment has an internal conductive layer comprising a plurality of conductive cores twisted together, wherein the cross-sections of the plurality of conductive cores are all circular with the same size.

[0011] In one possible implementation, the anti-icing cable in this application embodiment has an outer conductive layer comprising a plurality of twisted irregular wire cores, the thickness of which gradually increases along the direction from the center of the outer conductive layer toward its long axis.

[0012] In one possible implementation, the anti-icing cable in this application embodiment has a corrugated cross-section for the irregularly shaped wire core; the inner arc length of the irregularly shaped wire core is smaller than the outer arc length of the irregularly shaped wire core, and two adjacent irregularly shaped wire cores form a surface contact.

[0013] In one possible implementation, the anti-icing cable in this application embodiment has an aluminum core, an aluminum-magnesium-silicon alloy core, or an aluminum-zirconium alloy core; and / or, the shaped core is an aluminum core, an aluminum-magnesium-silicon alloy core, or an aluminum-zirconium alloy core.

[0014] In one possible implementation, the anti-icing cable in this application embodiment has an even number of at least one of the shaped wire core and the conductive wire core.

[0015] In one possible implementation, the anti-icing cable in this application embodiment further includes an outer sheath that wraps around the outer conductive layer, the shape of which is adapted to the outer conductive layer.

[0016] In one possible implementation, the outer sheath of the anti-icing cable in this application embodiment is an electroplated layer or a polished layer.

[0017] In one possible implementation, the anti-icing cable in this application embodiment has multiple internal load-bearing cores that are twisted together, and the cross-section of the internal load-bearing cores is circular.

[0018] In one possible implementation, the anti-icing cable in this application embodiment has an internal load-bearing core that is a galvanized steel core, an aluminum-clad steel core, or an aluminum-clad Invar core.

[0019] The anti-icing cable provided in this application utilizes an internal load-bearing core to provide good mechanical strength for the cable, withstand the pressure and tension of the external environment, and reduce the risk of tearing. The outer edge of the cross-section of the outer conductive layer is elliptical, which helps to reduce the accumulation of ice and snow on the cable and makes it easier for ice, snow and rainwater to slide off the cable, thereby reducing the risk of cable icing. In addition, the inner edge of the cross-section of the outer conductive layer is circular, which gives the internal conductive layer and the internal load-bearing core located within the outer conductive layer good stability, and can reduce material costs and reduce manufacturing difficulty. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 is a schematic diagram of the hierarchical structure of the anti-icing cable in an embodiment of this application;

[0022] Figure 2 is a schematic diagram of the internal structure of the anti-icing cable in an embodiment of this application.

[0023] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0024] Explanation of reference numerals in the attached diagram: 100, internal load-bearing core; 200, internal conductive layer; 201, conductive wire core; 300, external conductive layer; 301, irregularly shaped wire core. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0029] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0030] As mentioned in the background section, the reliability and performance of cables are crucial factors in ensuring a stable power supply in modern power transmission systems. With the increasing frequency of global climate change and extreme weather events, icing of power cables in harsh environments, especially in cold regions, poses a significant challenge to their safety and functionality. Icing not only increases the weight of cables but can also cause mechanical damage and even breakage, severely impacting the continuity of power supply.

[0031] Traditional anti-icing measures, such as heating systems and mechanical de-icing equipment, can alleviate icing problems to some extent, but these methods are often costly, energy-intensive, and have limited effectiveness in extreme weather conditions. Furthermore, the aerodynamic characteristics and structural design of cables directly affect their stability and durability in snowy weather. Therefore, optimizing cable structure in design to naturally reduce ice accumulation while improving their mechanical strength and conductivity has become a pressing issue in the current technological field.

[0032] Based on the above description of the relevant technology, one or more embodiments of this application provide an anti-icing cable. The internal load-bearing core provides good mechanical strength to the cable, allowing it to withstand the pressure and tension of the external environment and reducing the risk of tearing. The outer edge of the cross-section of the outer conductive layer is elliptical, which helps to reduce the accumulation of ice and snow on the cable and makes it easier for ice and rainwater to slide off the cable, thereby reducing the risk of cable icing. In addition, the inner edge of the cross-section of the outer conductive layer is circular, which gives the internal conductive layer and the internal load-bearing core located within the outer conductive layer good stability and can reduce material costs and manufacturing difficulty.

[0033] The anti-icing cable of this application embodiment is described below with reference to the accompanying drawings.

[0034] As shown in Figure 1, the anti-icing cable in this embodiment includes at least one inner supporting core 100, an inner conductive layer 200, and at least one outer conductive layer 300. The inner conductive layer 200 wraps around the inner supporting core 100, and at least one outer conductive layer 300 wraps around the inner conductive layer 200. The inner edge of the cross-section of the outer conductive layer 300 is circular, and the outer edge of the cross-section of the outer conductive layer 300 is elliptical.

[0035] As can be seen from the above description, the anti-icing cable of this application embodiment has an internal load-bearing core 100 that provides good mechanical strength to the cable and can withstand external environmental pressure and stress. The outer edge of the cross-section of the outer conductive layer 300 is elliptical, which helps to reduce the accumulation of ice and snow on the cable and makes it easier for ice and snow to slide off the cable, thereby reducing the risk of cable icing. In addition, the inner edge of the cross-section of the outer conductive layer 300 is circular. The circular cross-section can form the largest wrapping area within the same perimeter. Therefore, with the same amount of material and size, a larger wrapping space can be achieved in the outer conductive layer 300. This setting can further reduce material costs.

[0036] It should be noted that in this embodiment, "inner side" and "outer side" are used with reference to the cross-sectional direction of the cable. The cable consists of an inner load-bearing core 100, an inner conductive layer 200, and an outer conductive layer 300 from the inside out. In addition, Figure 1 illustrates the relationship between the various layers. For the multiple conductive cores 201 and the irregular cores 301 in this embodiment, the actual cross-sectional edge structure formed by stranding can be approximated as a circle, corresponding to the dotted line portion in Figure 1.

[0037] As shown in Figure 2, in some embodiments, there are multiple internal load-bearing cores 100, which are sequentially twisted together. Preferably, the cross-section of the internal load-bearing cores 100 is circular. During the twisting process, the multiple circular internal load-bearing cores 100 can achieve closer contact and more uniform stress distribution, further improving the overall mechanical properties of the cable. In addition, the circular cross-section load-bearing core is relatively simple to manufacture and process, reducing production complexity and cost.

[0038] For example, the internal load-bearing core 100 is a galvanized steel core, an aluminum-clad steel core, or an aluminum-clad Invar core. When a galvanized steel core is selected, the zinc coating provides additional corrosion protection, enabling the steel core to maintain good performance in humid and corrosive environments. Galvanized steel cores are typically used in applications requiring high mechanical strength to ensure the stability of the cable under harsh conditions. When an aluminum-clad steel core is selected, it provides good mechanical properties while reducing the overall weight of the cable, improving the ease of installation and maintenance. In addition, the corrosion resistance of aluminum enhances the durability of the cable in outdoor environments. When an aluminum-clad Invar core is selected, Invar has an extremely low coefficient of thermal expansion, which makes this material perform well in environments with large temperature variations, reducing the impact of thermal expansion and contraction on the cable structure. Aluminum-clad Invar cores are suitable for power transmission applications requiring high stability and durability.

[0039] As shown in Figure 2, in some embodiments, there are seven internal support cores 100, with one internal support core 100 located at the center and the other six internal support cores 100 twisted around the central internal support core 100. This arrangement can further enhance the twisting strength of the internal support cores 100 and ensure the cable's tensile and deformation resistance.

[0040] As shown in Figure 2, in some embodiments, the inner conductive layer 200 includes a plurality of conductive cores 201 twisted together, and the cross-sections of the plurality of conductive cores 201 are all circular with the same size.

[0041] Preferably, the conductive core 201 is an aluminum core, an aluminum-magnesium-silicon alloy core, or an aluminum-zirconium alloy core. Aluminum alloy cores have good conductivity and low density, and aluminum is lightweight, reducing the overall weight of the cable. In aluminum-magnesium-silicon alloy cores, the addition of silicon and magnesium elements to aluminum improves the material strength and corrosion resistance of the conductive core 201, and provides good creep resistance. In aluminum-zirconium alloy cores, the addition of zirconium significantly improves the material's high-temperature performance and creep resistance. This alloy maintains high strength and stability under high-temperature conditions.

[0042] It should be noted that, since both the irregular wire core 301 and the conductive wire core 201 serve to conduct electricity, in this embodiment, the irregular wire core 301 can be set in the same form as the conductive wire core 201 described above. That is, the irregular wire core 301 can also be made of aluminum, aluminum-magnesium-silicon alloy or aluminum-zirconium alloy.

[0043] As shown in Figure 2, in some embodiments, the outer conductive layer 300 includes a plurality of twisted irregular wire cores 301, and the thickness of the irregular wire cores 301 gradually increases along the direction from the center of the outer conductive layer 300 toward its long axis.

[0044] Specifically, the cross-section of the irregular wire core 301 is tile-shaped. The inner and outer sides of the irregular wire core 301 are both arc-shaped, and the overall shape of the irregular wire core 301 is approximately trapezoidal or fan-shaped. Multiple irregular wire cores 301 are twisted together to form a complete outer conductive layer 300.

[0045] In some embodiments, the inner arc length of the shaped wire core 301 is smaller than the outer arc length of the shaped wire core 301, and adjacent shaped wire cores 301 form a surface contact. When the cross-section of the shaped wire core 301 is conical, the sides of the shaped wire core 301 adjacent to the inner or outer edge are all planar, and the side ends of two adjacent shaped wire cores 301 are pressed together by surface contact. This design can ensure that the shaped wire cores 301 are arranged more closely together, increasing the conductive cross-sectional area of ​​the cable. On the other hand, the multiple stranded shaped wire cores 301 also help to improve the bending and torsional resistance of the cable, better distribute mechanical stress, and reduce the problem of single-point stress concentration.

[0046] Along the direction from the center of the outer conductive layer 300 towards its long axis, the thickness of the irregular wire core 301 gradually increases. The long axis of the outer conductive layer 300, that is, the left and right ends in Figure 1 or Figure 2, generally, the side with a smaller arc and a relatively flat surface in the ellipse of the outer conductive layer 300 is the top or bottom surface in actual use. In actual use, the cable is placed in the position shown in the example in Figure 1 or Figure 2. When rain or snow falls on the cable, after bearing a certain amount of weight, the cable will rotate unevenly and eccentrically, making it easier for the covered rain or snow to fall off, thus improving the anti-icing performance of the cable.

[0047] It should be noted that in the embodiments of this application, the cross-section of the irregular wire core 301 is tile-shaped. The specific preparation method of the irregular wire core 301 can be referred to the relevant technology. For example, after selecting a suitable metal alloy material, a special drawing die or extrusion die is designed and used to draw or extrude the metal alloy material into a tile shape.

[0048] As shown in Figure 2, the curvature of the inner and outer sides of the irregularly shaped wire core 301 is not consistent. When multiple irregularly shaped wire cores 301 are twisted together, it is sufficient to ensure that the inner conductive layer 200 is pressed and fixed, and that the outer side is formed into an ellipse. Since the formed elliptical cable itself has a centrally symmetrical structure, when rain and snow cover the cable, the cable will deflect due to uneven force, thereby shaking off the rain and snow and reducing the risk of rain and snow covering it. In addition, the elliptical cable structure can also adaptively adjust its posture under severe weather conditions such as strong winds and heavy rain. Compared with a circular cross-section, it can more effectively guide airflow through the surface, reduce wind resistance, and reduce the swaying and vibration amplitude of the cable under severe weather conditions.

[0049] As can be seen from Figures 1 and 2, in the anti-icing cable of this application embodiment, the outer conductive layer 300 is symmetrically distributed along the center line, and the number of irregular wire cores 301 is even. An even number of irregular wire cores 301 can more easily achieve symmetrical arrangement, which helps to maintain the mechanical balance of the cable. In addition, the symmetrical structure can evenly distribute stress, reduce the impact of uneven forces on the cable during installation and operation, thereby improving the stability and durability of the cable.

[0050] As an alternative implementation, the number of conductive cores 201 is also an even number, which will not be elaborated further in this embodiment.

[0051] In some embodiments, the anti-icing cable further includes an outer sheath that wraps around the outer conductive layer 300, and the shape of the outer sheath is adapted to the configuration of the outer conductive layer 300.

[0052] For example, the outer sheath is an electroplated layer or a polished layer. Generally, the electroplated layer can be zinc-plated, zinc-nickel-plated, or tin-plated. The electroplated layer is relatively thin, but it needs to uniformly cover the entire cable surface to ensure consistent protective performance. The polished layer is formed by smoothing the outer sheath through mechanical friction. The addition of an electroplated or polished layer can further reduce the friction on the outer surface of the cable, making its surface smoother and preventing ice and snow from accumulating on the outer conductive layer 300.

[0053] It should be noted that in some embodiments, the outer protective layer can be omitted, and polishing can be performed directly on the outer surface of the outer conductive layer 300 to make the outer surface of the outer conductive layer 300 smoother.

[0054] In this embodiment of the application, an exemplary manufacturing process for the anti-icing cable is as follows:

[0055] Prepare raw materials such as internal load-bearing core 100, conductive wire core 201 and special-shaped wire core 301; among them, the internal load-bearing core 100 and conductive wire core 201 are both round strand wire structures, and the special-shaped wire core 301 is a special-shaped wire structure with a tile-shaped cross section;

[0056] The internal load-bearing core 100, conductive wire core 201 and special-shaped wire core 301 are twisted together from the inside to the outside to form an overall elliptical structure.

[0057] The stranded cable undergoes surface treatment, such as polishing or electroplating, to make the outermost surface of the cable smooth and improve the tightness between adjacent irregular cores 301.

[0058] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0059] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An anti-icing cable, characterized in that, include: At least one internal load-bearing core (100); An inner conductive layer (200) encloses the inner load-bearing core (100); At least one external conductive layer (300) surrounds the internal conductive layer (200), the inner edge of the cross section of the external conductive layer (300) is circular, and the outer edge of the cross section of the external conductive layer (300) is elliptical.

2. The anti-icing cable according to claim 1, characterized in that, The internal conductive layer (200) includes a plurality of conductive cores (201) twisted together, and the cross-sections of the plurality of conductive cores (201) are all circular with the same size.

3. The anti-icing cable according to claim 2, characterized in that, The outer conductive layer (300) includes a plurality of twisted irregular wire cores (301), and the thickness of the irregular wire cores (301) gradually increases along the direction from the center of the outer conductive layer (300) toward its long axis end.

4. The anti-icing cable according to claim 3, characterized in that, The cross-section of the irregular wire core (301) is tile-shaped; the inner arc length of the irregular wire core (301) is smaller than the outer arc length of the irregular wire core (301), and two adjacent irregular wire cores (301) form a surface contact.

5. The anti-icing cable according to claim 3, characterized in that, The conductive core (201) is an aluminum core, an aluminum-magnesium-silicon alloy core, or an aluminum-zirconium alloy core; and / or, the shaped core (301) is an aluminum core, an aluminum-magnesium-silicon alloy core, or an aluminum-zirconium alloy core.

6. The anti-icing cable according to claim 3, characterized in that, The number of at least one of the irregular wire core (301) and the conductive wire core (201) is an even number.

7. The anti-icing cable according to claim 1, characterized in that, It also includes an outer sheath that wraps around the outer conductive layer (300), the shape of which is adapted to the outer conductive layer (300).

8. The anti-icing cable according to claim 7, characterized in that, The outer protective layer is an electroplated layer or a polished layer.

9. The anti-icing cable according to any one of claims 1 to 8, characterized in that, The internal load-bearing core (100) has multiple parts that are twisted together, and the cross-section of the internal load-bearing core (100) is circular.

10. The anti-icing cable according to any one of claims 1 to 8, characterized in that, The internal load-bearing core (100) is a galvanized steel core, an aluminum-clad steel core, or an aluminum-clad Invar steel core.

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