Cable and cable manufacturing method

Abstract

The present application relates to the technical field of cables. Provided are a cable and a cable manufacturing method, the cable comprising a cable core, an insulation layer, a water-blocking shielding layer, and a sheath layer; the cable core is a solid aluminium conductor; the insulation layer is disposed outside the cable core; the water-blocking shielding layer is disposed outside the insulation layer, and the sheath layer is disposed outside the water-blocking shielding layer. By virtue of such a structural configuration, the cable has good waterproofing performance, while the overall mass of the cable can be reduced and the application range of the cable can be expanded.

Description

Cable and cable manufacturing method

[0001] The present application claims priority to the Chinese patent application No. 202410660977.X, filed on May 24, 2024, and entitled "Cable and cable manufacturing method", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of cables, in particular to a cable and a cable manufacturing method. BACKGROUND

[0003] Under the background of double carbon, with the rapid development of offshore wind power industry, more and more wind farms are built, and various demands for the cable of the landing section are coming one after another.

[0004] In the related art, the cable core is often formed by twisting a plurality of single-wire conductors. Such a cable core is prone to form gaps between the conductors. Liquid will flow along the gaps in the cable core. After the cable is powered on, it is easy to form a breakdown inside the cable core. Therefore, there is an urgent need to design a cable with good waterproof performance to adapt to complex cable installation environments. SUMMARY

[0005] The cable and the cable manufacturing method provided by the present application have good waterproof performance and are suitable for various installation environments.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a cable, comprising:

[0008] a cable core, the cable core being a solid aluminum conductor;

[0009] an insulation layer, the insulation layer being arranged outside the cable core;

[0010] a water-blocking shielding layer, the water-blocking shielding layer being arranged outside the insulation layer;

[0011] a sheath layer, the sheath layer being arranged outside the water-blocking shielding layer.

[0012] As a possible implementation, the water-blocking shielding layer is a plurality of water-blocking shielding layers, and the plurality of water-blocking shielding layers are sequentially sleeved along the radial direction of the cable core from inside to outside.

[0013] As a possible implementation, the water-blocking shielding layer comprises a first water-blocking medium layer, a metal shielding layer and a second water-blocking medium layer, which are sequentially sleeved along the radial direction of the cable core from inside to outside.

[0014] As a possible implementation, the metal shielding layer is formed by winding a plurality of aluminum wires.

[0015] As a possible implementation, the insulating layer comprises: a first semi-conductive insulating layer, an insulating shielding layer and a second semi-conductive insulating layer, which are sequentially sleeved along the radial direction of the cable core; and / or,

[0016] The thickness of the insulating shielding layer is greater than or equal to 7mm.

[0017] As a possible implementation, the insulating shielding layer is a polypropylene insulating shielding layer.

[0018] As a possible implementation, the sheath layer comprises: a metal composite sheath layer and an outer sheath layer, which are sequentially sleeved along the radial direction of the cable core.

[0019] As a possible implementation, the metal composite sheath layer is formed by winding an aluminum-plastic composite tape.

[0020] As a possible implementation, the diameter of the aluminum wire is 0.8mm-3.15mm; and / or,

[0021] The adjacent aluminum wires have a spacing of 4mm-8mm.

[0022] In a second aspect, the present application provides a cable manufacturing method for manufacturing the cable in any of the preceding embodiments, the method comprising:

[0023] Co-extruding the cable core and the insulating layer to obtain a first common body;

[0024] Coating a water-blocking shielding layer outside the first common body to obtain a second common body;

[0025] Coating a metal composite sheath layer outside the second common body to obtain a third common body;

[0026] Co-extruding the third common body and the outer sheath layer to obtain the cable.

[0027] The cable and cable manufacturing method provided in this application include a cable core, an insulation layer, a water-blocking shielding layer, and a sheath layer. The cable core is a solid aluminum conductor. The insulation layer is disposed on the outside of the cable core. The water-blocking shielding layer is disposed on the outside of the insulation layer. The sheath layer is disposed on the outside of the water-blocking shielding layer. The cable provided in this application uses a single solid aluminum conductor, and the gap between the cable cores is relatively reduced to almost zero, preventing liquid from flowing along the cable core and further preventing the cable from being broken down by current or high voltage after being energized. Furthermore, the solid aluminum conductor is relatively lightweight, reducing the overall weight of the cable, making it suitable for long-distance power transmission. The insulation layer wraps around the outside of the cable core, improving the cable's insulation performance. The water-blocking shielding layer is disposed on the outside of the insulation layer, further improving the cable's water-blocking and waterproof performance and its safety. The sheath layer is disposed on the outside of the water-blocking shielding layer, protecting the cable core and preventing damage from animals or other organisms in outdoor environments. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 is a schematic diagram of the cable structure provided in an embodiment of this application;

[0030] Figure 2 is a flowchart of a cable manufacturing method provided in an embodiment of this application;

[0031] Figure 3 is a schematic diagram of the correction device provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 100-Cable; 110-Cable core; 120-Insulation layer; 121-First semi-conductive insulation layer; 122-Insulation shielding layer; 123-Second semi-conductive insulation layer; 130-Water-blocking shielding layer; 131-First water-blocking dielectric layer; 132-Metallic shielding layer; 133-Second water-blocking dielectric layer; 140-Sheath layer; 141-Metallic composite sheath layer; 142-Outer sheath layer; 300-Correcting device; 310-First correcting component; 320-Second correcting component; 330-Shaping component; 331-Guide roller; 332-Chuck. Detailed Implementation

[0033] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. All other embodiments obtained fall within the protection scope of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0034] Under the background of double carbon, with the rapid development of China's offshore wind power industry, more and more wind farms are emerging, and various demands for the cable on the landing section are coming one after another.

[0035] In the related art, the cable core is often formed by twisting a plurality of single-wire conductors. Such a cable core is prone to form gaps between the conductors. Liquid will flow along the gaps in the cable core. After the cable is powered on, it is easy to form a breakdown inside the cable core.

[0036] Therefore, there is an urgent need to design a cable with good waterproof performance to adapt to complex cable installation environments.

[0037] In order to overcome the defects in the prior art, the present application provides a cable and a cable manufacturing method. The cable comprises: a cable core, an insulation layer, a water-blocking shielding layer and a sheath layer arranged in sequence from inside to outside along the radial direction of the cable core. The cable core is a solid aluminum conductor. The surface of the solid aluminum conductor is smooth. Compared with the cable core made by twisting a plurality of conductors, the surface of the conductor, i.e. the cable core, has no gap or gap, and the water-blocking performance and waterproof performance of the cable are improved. In addition, the solid aluminum conductor is lighter than the solid copper conductor. When long-distance power transmission is required, the weight of the cable can be reduced, further reducing the production cost of the cable. Such a cable is light and easy to construct, and can be applied to various different working environments.

[0038] The content of the present application will be described in detail below with reference to the drawings, so that those skilled in the art can more clearly and specifically understand the content of the present application.

[0039] As shown in FIG. 1, the present application provides a cable 100, comprising: a cable core 110, an insulation layer 120, a water-blocking shielding layer 130 and a sheath layer 140.

[0040] The cable core 110 is a solid aluminum conductor. The insulation layer 120 is arranged outside the cable core 110. The water-blocking shielding layer 130 is arranged outside the insulation layer 120. The sheath layer 140 is arranged outside the water-blocking shielding layer 130.

[0041] Thus, according to the cable 100 provided by the embodiment of the present application, the gap of the cable core 110 is relatively reduced to no gap, and the liquid cannot flow along the cable core 110, which further prevents the cable 100 from being broken down by the current or high voltage after the cable 100 is powered on. In addition, the solid aluminum conductor is relatively light in weight, which reduces the overall weight of the cable 100, and such a cable 100 is suitable for long-distance power transmission requirements. The insulating layer 120 is wrapped outside the cable core 110 to improve the insulation performance of the cable 100. The water-blocking shielding layer 130 is arranged outside the insulating layer 120 to further improve the water-blocking and waterproof performance of the cable 100 and the safety of the cable 100. The sheath layer 140 is arranged outside the water-blocking shielding layer 130 to protect the cable core 110 and prevent the cable 100 from being damaged by animals or other organisms in an outdoor environment. Such a cable 100 can be suitable for different working environments.

[0042] For example, the solid aluminum conductor in the embodiment of the present application can be a pure aluminum conductor. The pure aluminum conductor has good electrical conductivity and thermal conductivity, and the price of pure aluminum is relatively low, which can reduce the production cost of the cable 100. For some long-distance power transmission requirements, such a cable 100 can be used. In addition, the strength and hardness of the pure aluminum conductor are moderate, which facilitates the construction and laying of the cable 100.

[0043] Of course, the solid aluminum conductor in the embodiment of the present application can also be an aluminum alloy conductor. The aluminum alloy conductor is formed by adding an appropriate amount of elements to pure aluminum, which can improve the mechanical structural performance of the cable core 110, for example, the bending resistance of the aluminum alloy conductor is enhanced, and the tensile resistance is good. In addition, the strength and hardness of the cable core 110 also correspondingly change with different elements contained in the aluminum alloy conductor and different contents of each element. It can be understood that after the cable 100 is formed, the strength, hardness and other mechanical properties of the cable 100 are improved, thereby expanding the applicable environment of the cable 100.

[0044] It should be noted that the embodiment of the present application does not make specific limitations on the pure aluminum solid conductor or the aluminum alloy solid conductor of the cable core 110, and the material of the cable core 110 can be reasonably designed and selected in combination with the use environment and power demand of the cable 100 in actual production.

[0045] In some embodiments, the diameter of the cable core 110 is greater than or equal to 3.4 mm. That is, the diameter of the single solid aluminum conductor is greater than or equal to 3.4 mm. For example, the diameter of the single solid aluminum conductor is 3.4 mm, 5.7 mm, 37.1 mm, 39.0 mm, etc., which is not limited in the embodiment of the present application. In actual production, the diameter of the cable core 110 can be reasonably selected according to the power design requirements.

[0046] Further, the plurality of water-blocking shielding layers 130 are sequentially sleeved along the radial direction of the cable core 110 from inside to outside. In this way, by arranging the plurality of water-blocking shielding layers 130, the water-blocking and waterproof performance of the cable 100 is improved, so that the current or voltage breakdown in the cable 100 is avoided after the liquid in the cable 100, and the safety of the cable 100 is further improved.

[0047] For example, the water-blocking shielding layer 130 can be two, one of the two water-blocking shielding layers 130 is arranged on the outside of the cable core 110 and wraps the cable core 110. The other water-blocking shielding layer 130 is arranged on the outside of the water-blocking shielding layer 130 adjacent to the cable core 110. In this way, the two water-blocking shielding layers 130 can improve the water-blocking effect of the cable 100.

[0048] It should be noted that the number of water-blocking shielding layers 130 in the embodiment of the present application can also be greater than two, and the water-blocking effect and safety of the cable 100 are improved by the plurality of water-blocking shielding layers 130. In addition, the number of water-blocking shielding layers 130 is not specifically limited in this part, and the number of water-blocking shielding layers 130 can be reasonably selected according to the actual use of the cable 100.

[0049] Further, the water-blocking shielding layer 130 comprises: a first water-blocking medium layer 131, a metal shielding layer 132 and a second water-blocking medium layer 133 which are sequentially sleeved along the radial direction of the cable core 110 from inside to outside.

[0050] Referring to FIG. 1, the water-blocking shielding layer 130 in the embodiment of the present application is arranged on the outside of the insulating layer 120 and wraps the insulating layer 120 to block the water from entering the inside of the cable 100.

[0051] Specifically, the water-blocking shielding layer 130 comprises a first water-blocking medium layer 131, which is arranged outside the insulating layer 120 and wraps the insulating layer 120. The first water-blocking medium layer 131 can be a semi-conductive water-blocking tape, which has strong water-blocking performance, heat resistance, chemical stability, strong moisture absorption and large expansion rate.

[0052] The thickness of the first water-blocking medium layer 131 in the embodiment of the present application is 0.4mm-0.47mm, the expansion is more than 14mm, the expansion speed is more than 12mm / min, the tensile strength is 40N / cm, the longitudinal elongation is more than 17%, the surface resistance is less than 1100Ω, the volume resistivity is less than 500Ω, the instantaneous heat resistance temperature is 230℃, the long-term heat resistance is 110℃, and the water content is less than 9%. Not only can the current breakdown phenomenon caused by too large temperature difference during the operation of the cable 100 be avoided, but also the effective water-blocking effect can be achieved.

[0053] Further, the water-blocking shielding layer 130 further comprises a metal shielding layer 132, which is arranged outside the first water-blocking medium layer 131. The metal shielding layer 132 forms a metal sleeve or a metal mesh structure to reduce the electromagnetic interference outside the cable 100 and improve the stability and reliability of the cable 100. In addition, the metal shielding layer 132 can enhance the structural strength of the cable 100 and improve the mechanical properties of the cable 100, thereby prolonging the service life of the cable 100.

[0054] On the basis of the foregoing embodiments, the water-blocking shielding layer 130 further comprises a second water-blocking medium layer 133 arranged outside the metal shielding layer 132 to form a water-blocking effect on the metal shielding layer 132, thereby further improving the water-blocking property and safety of the cable 100. The second water-blocking medium layer 133 in the embodiments of the present application has the same material and parameters as the first water-blocking medium layer 131, and thus will not be described here.

[0055] In some embodiments, the metal shielding layer 132 is formed by winding a plurality of aluminum wires. In this way, the metal mesh or tubular structure formed by winding a plurality of aluminum wires can shield the electromagnetic interference outside the cable 100 and improve the stability of the cable 100. At the same time, the aluminum wires can reduce the weight of the cable 100 after forming, facilitating the transportation and construction laying of the cable 100. That is to say, such a cable 100 can reduce the production cost, transportation cost and construction cost, and reduce the installation and construction difficulty of the cable 100, thereby improving the installation and construction efficiency of the cable 100.

[0056] Further, the diameter of the aluminum wire is 0.8mm-3.15mm; and / or, the adjacent aluminum wires have a spacing of 4mm-8mm.

[0057] It is not difficult to understand that the diameter of the aluminum wire in the embodiments of the present application can be 0.8mm, 1.2mm, 1.46mm, 3.15mm, etc. Of course, the diameter of the aluminum wire in the embodiments of the present application is not limited to the above-mentioned values, and in the specific implementation process, the diameter of the aluminum wire falls within the above-mentioned range.

[0058] It should be noted that during the winding process of the plurality of aluminum wires, aluminum wires with the same diameter are preferably selected to make the structure and performance of the cable 100 more uniform. After winding, the spacing between adjacent aluminum wires is 4mm-8mm, for example: 4mm, 4.8mm, 6.2mm, 8mm, etc., which will not be limited in the embodiments of the present application.

[0059] In the implementation, the researchers use 57 aluminum wires with a diameter of 1.46 mm to form the metal shielding layer 132. Compared with the metal shielding layer 132 formed by 57 copper wires with a diameter of 1.2 mm, the weight of the cable 100 formed by the metal shielding layer 132 formed by the aluminum wires is lighter than the weight of the cable 100 formed by the metal shielding layer 132 formed by the copper wires, and the weight of the cable 100 is reduced by 322 kg / km, while meeting the short-circuit current requirement 10 kA / 1S of the cable 100 system.

[0060] Further, in order to keep the metal shielding layer 132 stable, a metal band, such as an aluminum band, can be wound around the outside of the metal shielding layer 132. The winding direction of the metal band and the metal shielding layer 132 is opposite, so that the metal shielding layer 132 can be prevented from loosening during use.

[0061] As a possible implementation, the insulating layer 120 includes: a first semi-conductive insulating layer 121, an insulating shielding layer 122, and a second semi-conductive insulating layer 123, which are sequentially arranged along the radial direction of the cable core 110; and / or, the thickness of the insulating shielding layer 122 is greater than or equal to 7 mm. In this way, the cable core 110 is insulated by the insulating layer 120, and the stability of the cable 100 is improved.

[0062] As shown in FIG. 1, the insulating layer 120 in the embodiment of the present application includes the first semi-conductive insulating layer 121, which is arranged on the outside of the cable core 110 along the radial direction of the cable core 110, that is, the first semi-conductive insulating layer 121 wraps the cable core 110, so as to uniformly distribute the electric field of the cable core 110, reduce the electric field concentration inside the cable 100, and further reduce the probability of occurrence of the surface partial discharge phenomenon of the cable core 110.

[0063] Further, the insulating layer 120 further includes the insulating shielding layer 122, which is arranged on the outside of the first semi-conductive insulating layer 121, that is, the insulating shielding layer 122 wraps the first semi-conductive insulating layer 121. It can be understood that the insulating shielding layer 122 insulates the cable core 110 from the external electric field or magnetic field, so as to prevent the loss of current in the cable 100, and further ensure the working stability and safety of the cable 100. At the same time, the insulating shielding layer 122 has a certain water resistance, so as to protect the cable core 110 in the cable 100 and prolong the service life of the cable 100.

[0064] The insulating layer 120 in the embodiment of the present application further comprises a second semi-conductive insulating layer 123, which is arranged outside the insulating shielding layer 122, that is, the second semi-conductive insulating layer 123 wraps the insulating shielding layer 122. After the current breaks through the first semi-conductive insulating layer 121 and the insulating shielding layer 122, the second semi-conductive insulating layer 123 forms an insulating isolation and releases the part of the electric charge, preventing the accumulation of the electric charge and reducing the stress of the cable 100 in the electric field, so as to prolong the service life of the cable 100.

[0065] In some specific embodiments, the thickness of the first semi-conductive insulating layer 121 and the second semi-conductive insulating layer 123 can be 0.8 mm.

[0066] Optionally, the insulating shielding layer 122 is a polypropylene insulating shielding layer. It is not difficult to understand that the base material of the polypropylene insulating shielding layer is polypropylene, and the density of the polypropylene insulating shielding layer in the embodiment of the present application is 0.83 g / cm 3 , which is relatively small, and can reduce the weight of the cable 100 while meeting the insulating shielding requirements of the cable 100.

[0067] Through experiments, the researchers found that for a 30 kV cable 100, when the insulating shielding layer 122 is a cross-linked polyethylene insulating shielding layer, the thickness of the cross-linked polyethylene insulating shielding layer needs to reach 8 mm to meet the insulating shielding requirements of the cable 100; when the insulating shielding layer 122 is the polypropylene insulating shielding layer in the embodiment of the present application, the thickness of the polypropylene insulating shielding layer is 7 mm, which can meet the insulating shielding requirements of the cable 100. In this way, the polypropylene insulating shielding layer can not only reduce the diameter of the cable 100, but also reduce the weight of the cable 100. In addition, the polypropylene base material can be recycled and reused, which is more friendly to the natural environment and more environmentally friendly.

[0068] Further, the thickness of the insulating shielding layer 122 in the embodiment of the present application is greater than or equal to 7 mm. For example, the thickness of the insulating shielding layer 122 can be 7 mm, 8 mm, 10 mm, etc., which is not limited in the embodiment of the present application.

[0069] Optionally, the sheath layer 140 comprises a metal composite sheath layer 141 and an outer sheath layer 142 which are sequentially arranged from inside to outside along the radial direction of the cable core 110. In this way, the metal composite sheath layer 141 improves the mechanical properties of the cable 100, and the outer sheath layer 142 insulates and isolates the metal composite sheath layer 141.

[0070] For example, the metal composite sheath layer 141 is wrapped around the outside of the water-blocking shielding layer 130. Such a metal composite sheath layer 141 can provide mechanical protection for the cable 100, preventing the cable 100 from being physically damaged during installation and use. In addition, the metal in the metal composite sheath layer 141 has electrical conductivity and shielding effect, which can not only transmit current, but also reduce the electromagnetic interference from the outside of the cable 100 to the signal of the cable 100, thereby protecting the transmission quality of the signal inside the cable 100.

[0071] The outer sheath layer 142 is arranged outside the metal composite sheath layer 141, that is, the outer sheath layer 142 wraps the metal composite sheath layer 141. The material of the outer sheath layer 142 can be polyethylene, polyvinyl chloride, cross-linked polyethylene, etc. Such an outer sheath layer 142 can prevent water and moisture, thereby improving the safety and stability of the cable 100.

[0072] Optionally, the metal composite sheath layer 141 in the embodiment of the present application is formed by winding an aluminum-plastic composite tape.

[0073] The cable provided by the embodiment of the present application comprises a cable core, an insulation layer, a water-blocking shielding layer and a sheath layer. The cable core is a solid aluminum conductor. The insulation layer is arranged outside the cable core. The water-blocking shielding layer is arranged outside the insulation layer. The sheath layer is arranged outside the water-blocking shielding layer. Through such a structural arrangement, the cable has good water-proof performance, and at the same time, the overall weight of the cable is reduced, thereby expanding the application range of the cable.

[0074] FIG. 2 is a flowchart of a cable manufacturing method provided by the embodiment of the present application.

[0075] In addition, the embodiment of the present application can also provide a cable manufacturing method for manufacturing the cable 100 in any of the preceding embodiments. The method comprises:

[0076] S201, co-extruding the cable core 110 and the insulation layer 120 to obtain a first common body.

[0077] The insulation layer 120 in the embodiment of the present application comprises a first semi-conductive insulation layer 121, an insulation shielding layer 122 and a second semi-conductive insulation layer 123, which are sequentially arranged from inside to outside along the radial direction of the cable core 110. The cable core 110 and the first semi-conductive insulation layer 121, the insulation shielding layer 122 and the second semi-conductive insulation layer 123 are co-extruded to obtain a first common body.

[0078] S202, wrapping the water-blocking shielding layer 130 outside the first common body to obtain a second common body.

[0079] The water-blocking shield layer 130 in the embodiment of the present application comprises: a first water-blocking medium layer 131, a metal shielding layer 132 and a second water-blocking medium layer 133 which are sequentially sleeved along the radial direction of the cable core 110 from inside to outside. First, the first water-blocking medium layer 131 is wrapped outside the first common body obtained from S201, then the metal shielding layer 132 is wound outside the first water-blocking medium layer 131, and finally the second water-blocking medium layer 133 is wrapped outside the metal shielding layer 132, thereby obtaining a second common body.

[0080] S203, wrapping a metal composite sheath layer 141 outside the second common body to obtain a third common body.

[0081] The metal composite sheath layer 141 in the embodiment of the present application is formed by winding an aluminum plastic composite tape. It can be understood that the metal composite sheath layer 141 is wound and wrapped outside the second common body obtained from S202, thereby obtaining the third common body.

[0082] S204, co-extruding the third common body and an outer sheath layer 142 to obtain the cable 100.

[0083] The outer sheath layer 142 is a polyethylene layer, a polyvinyl chloride layer or a cross-linked polyethylene layer, etc. Co-extruding the third common body obtained from S203 and the outer sheath layer 142 can obtain the cable 100 provided in the embodiment of the present application.

[0084] Fig. 3 is a schematic diagram of a correction device provided in the embodiment of the present application.

[0085] Further, as shown in Fig. 3, the present application can also provide a correction device 300 for the co-extrusion process of the cable 100. The correction device 300 is used for correcting the first common body and the cable in the foregoing method. The correction device 300 is arranged at the co-extrusion outlet of the first common body or the cable. The correction device 300 comprises a first correction assembly 310, a second correction assembly 320 and a shaping assembly 330 which are sequentially arranged along the length direction of the cable 100. The first correction assembly 310 and the second correction assembly 320 are arranged at 90° in the radial direction of the cable 100. The cable 100 sequentially passes through the first correction assembly 310, the second correction assembly 320 and the shaping assembly 330. The first correction assembly 310, the second correction assembly 320 and the shaping assembly 330 can rotate around the axis of the cable 100.

[0086] In the process of specific use, the first community or cable 100 first passes through the first straightening assembly 310 and the second straightening assembly 320, which can straighten the first community or cable 100 in the axial and radial directions. During the movement of the first community or cable 100, the first straightening assembly 310 and the second straightening assembly 320 rotate around the axis of the cable 100, which can prevent the first straightening assembly 310 and the second straightening assembly 320 from twisting the first community or cable 100.

[0087] After passing through the second straightening assembly 320, the first community or cable 100 moves to the shaping assembly 330. The shaping assembly 330 is composed of three groups of guide wheels 331 that are adjustable in the radial direction of the cable core 110, and the three groups of guide wheels 331 are installed on a chuck 332. By adjusting the chuck 332, the clamping and loosening actions can be completed, thereby improving the roundness during the movement of the first community or cable 100. Similarly, the shaping assembly 330 rotates around the axis of the cable 100, which can effectively prevent the first community or cable 100 from being twisted by the torsional force.

[0088] It should be noted that the terms "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", etc. in the specification mean that the described embodiment can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in connection with other embodiments whether explicitly described or not.

[0089] In general, the terms should be understood, at least in part, to mean a usage of the term is dependent on context. For example, the term "one or more" as used herein, depending at least in part upon the context, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures, or characteristics, in a plural sense. Similarly, terms such as "a" or "an" can be understood to convey a singular usage or a plural usage, depending at least in part upon the context in which such terms are used.

[0090] It should be readily understood that the terms "on", "above", and "on top of", in the application, should be interpreted in the broadest manner such that "on" means not only "directly on" but also "on" with intervening features or layers, and "above" or "on top of" means not only "above" or "on top of" but also "above" or "on top of" without intervening features or layers (i.e., directly on).

[0091] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0092] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, but not limiting the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features thereof; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cable, characterized by The cable comprises: a cable core which is a solid aluminum conductor; an insulation layer disposed outside the cable core; a water-blocking shielding layer disposed outside the insulation layer; a sheath layer disposed outside the water-blocking shielding layer.

2. The cable of claim 1, wherein, The water-blocking shielding layer is multiple, and the multiple water-blocking shielding layers are sequentially sleeved along the radial direction of the cable core from inside to outside.

3. The cable of claim 1, wherein, The water-blocking shielding layer comprises: a first water-blocking medium layer, a metal shielding layer and a second water-blocking medium layer which are sequentially sleeved along the radial direction of the cable core from inside to outside.

4. The cable of claim 3, wherein, The metal shielding layer is formed by winding a plurality of aluminum wires.

5. The cable according to any of claims 1-4, characterized in that, The insulation layer comprises: a first semi-conductive insulation layer, an insulation shielding layer and a second semi-conductive insulation layer which are sequentially sleeved along the radial direction of the cable core from inside to outside; and / or, The thickness of the insulation shielding layer is greater than or equal to 7 mm.

6. The cable of claim 4, wherein, The insulation shielding layer is a polypropylene insulation shielding layer.

7. The cable according to any of claims 1-4, characterized in that The sheath layer comprises: a metal composite sheath layer and an outer sheath layer which are sequentially sleeved along the radial direction of the cable core from inside to outside.

8. The cable of claim 7, wherein, The metal composite sheath layer is formed by winding an aluminum plastic composite tape.

9. The cable of claim 4, wherein, The diameter of the aluminum wire is 0.8 mm-3.15 mm; and / or, The adjacent aluminum wires have a spacing of 4 mm-8 mm.

10. A method of manufacturing a cable, characterized by The method for manufacturing the cable of any one of claims 1-9 comprises: co-extruding the cable core and the insulation layer to obtain a first common body; coating a water-blocking shielding layer outside the first common body to obtain a second common body; coating a metal composite sheath layer outside the second common body to obtain a third common body; co-extruding the third common body and the outer sheath layer to obtain the cable.

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