Fluoroplastic insulation rubber sheath metal shielding field feed cable

Abstract

The utility model discloses a fluoroplastic insulating rubber sheath metal shielding field feed cable, which relates to the technical field of cables, and comprises a plurality of groups of conductors, insulating layers are arranged outside the conductors, the conductors and the insulating layers form insulating wire cores, two groups of insulating wire cores are twisted in pairs to form a twisted wire core, and the twisted wire core is arranged between the conductors and the insulating layers. A shielding layer is arranged outside the twisted-pair wire cores; according to the utility model, the conductors, the insulating layers, the shielding layer, the filling layer, the wrapping layer, the outer protective layer, the tensile member and the tensile layer are combined, and the shielding layer is braided and covered by tinned copper wires to form a continuous metal shielding layer, so that electromagnetic interference can be effectively inhibited, and the requirement of precision equipment such as a magnetic suspension system on signal purity is met; meanwhile, the braided structure keeps the flexibility of the cable and adapts to laying in complex terrains, and when the cable bears longitudinal tension, the tensile member shares large stress to prevent the conductor or the insulating layer from being fractured due to excessive tensile, thereby forming full-dimensional performance adaptation to complex outdoor environments.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically a fluoroplastic insulated rubber sheath metal shielded field power feeder cable. Background Technology

[0002] Feeder cables are cables specifically designed for transmitting electrical energy. Their core function is to stably deliver electrical energy from the power source to the electrical equipment. They are a key component in power systems that connects the power source and the load. Currently, the rapid development of rail transit in major Chinese cities and the shipbuilding industry in coastal areas has led to a rapid increase in the demand for various special feeder cables. For example, in maglev systems, the length of the cable used is approximately 30 times the length of the maglev line, and the usage accounts for about 3% of the total investment in maglev trains. Due to the special operating environment of special feeder cables, there are special requirements for their flame retardancy, high temperature resistance, tensile strength, and other properties. Currently, only a few large foreign companies can produce them. Therefore, after most maglev projects are put into operation, all the cables required for them are imported, which greatly increases the operating cost of maglev trains.

[0003] In existing technologies, traditional cables need to withstand tensile and bending stresses during outdoor laying due to complex geographical factors. Ordinary insulation and sheath materials are prone to cracking and deformation, leading to insulation failure or signal transmission interruption, thus reducing the performance of the cable. To address this, we propose a fluoroplastic insulated rubber sheath metal shielded outdoor power supply cable. Utility Model Content

[0004] The purpose of this utility model is to provide a fluoroplastic insulated rubber sheath metal shielded field power feeder cable to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fluoroplastic insulated rubber sheath metal shielded field power feeder cable, comprising multiple sets of conductors, an insulation layer provided on the outside of the conductors, the conductors and the insulation layer forming an insulated core, two sets of insulated cores being twisted together to form a twisted core, a shielding layer provided on the outside of the twisted core, the twisted core and the shielding layer forming a cable core, a filling layer provided on the outside of the cable core, and multiple sets of insulated cores provided on the outside of the filling layer.

[0006] Preferably, the insulated wire core is provided with a wrapping layer on the outside, the wrapping layer is provided with an outer sheath on the outside, and the outer sheath is provided with multiple sets of tensile-resistant layers inside.

[0007] Preferably, the conductor is made of multiple strands of fine tin-plated soft copper wire twisted together, and the insulating layer is fluoroplastic.

[0008] Preferably, the shielding layer is woven from ultra-fine soft tin-plated copper wire, the filling layer is flame-retardant polypropylene, and the outer sheath is insulating rubber.

[0009] Preferably, the interior of the filling layer is provided with a tensile member.

[0010] Preferably, a fireproof layer is provided inside the outer protective layer, and a flame-retardant layer is provided outside the outer protective layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) This utility model combines a conductor, insulation layer, shielding layer, filling layer, wrapping layer, outer sheath, tensile component and tensile layer. The conductor has both high conductivity and flexibility. At the same time, the tin plating on the outside forms electrochemical protection to resist the corrosion of the conductor by outdoor salt spray, acid rain and other corrosive media, and extend the service life. The tin-plated copper wire braiding of the shielding layer forms a continuous metal shielding layer, which can effectively suppress electromagnetic interference and meet the signal purity requirements of precision equipment such as magnetic levitation systems. At the same time, the braided structure maintains the flexibility of the cable and adapts to complex terrain. The filling layer is embedded with iron wire or aramid fiber bundles. When the cable is subjected to longitudinal tension, the tensile component shares a large amount of stress to prevent the conductor or insulation layer from breaking due to excessive stretching. The galvanized steel wire rope or Kevlar fiber tape in the outer sheath resists torsional deformation when the cable is laid (such as dragging or pulling) to avoid core misalignment or shielding layer damage. The synergistic design of these components forms a full-dimensional performance adaptation to complex outdoor environments.

[0013] (2) This utility model combines a fireproof layer and a flame-retardant layer. The composite structure of the fireproof layer and the flame-retardant layer is designed in a coordinated manner with material properties and functional division of labor, forming a multi-level fire protection system of "flame retardant-fireproof-safety protection", which improves the safety during use and solves the problem of insufficient fire protection performance of traditional cables. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the outer protective layer and wrapping layer structure of this utility model;

[0016] In the diagram: 1. Conductor; 2. Insulation layer; 3. Shielding layer; 4. Filler layer; 5. Wrapping layer; 6. Outer sheath; 7. Tensile component; 8. Flame retardant layer; 9. Fireproof layer; 10. Tensile layer. Detailed Implementation

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

[0018] Example 1

[0019] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a fluoroplastic insulated rubber sheath metal shielded field power feeder cable, including multiple sets of conductors 1, both conductors 1 and shielding layer 3 are made of tin-plated copper wire, which can not only meet the transmission performance of electrical performance, but also prevent corrosion and oxidation in harsh field environments. The conductors 1 are provided with an insulation layer 2, conductors 1 and insulation layer 2 form an insulated wire core, two sets of insulated wire cores are twisted together to form a twisted wire core, the twisted wire core is provided with a shielding layer 3, the twisted wire core and shielding layer 3 form a cable core, the cable core is provided with a filling layer 4, the gaps outside the cable core are filled with environmentally friendly, non-toxic, highly flame-retardant flame-retardant polypropylene as filling layer 4, multiple sets of insulated wire cores are provided outside the filling layer 4, the insulated wire cores are wound around the outside of the cable core, and the wound insulated wire cores are wrapped with non-woven fabric as wrapping layer 5.

[0020] The insulated core is surrounded by a wrapping layer 5, and the wrapping layer 5 is surrounded by an outer sheath 6. The outer sheath 6 is a special rubber material that is resistant to high and low temperatures, highly flame-retardant, UV resistant, high-strength, and has high tear resistance. The outer sheath 6 is surrounded by multiple tensile-resistant layers 10. The tensile-resistant layers 10 are made of galvanized steel wire rope, aramid fiber, or Kevlar fiber, etc., which have bending resistance and enhance tensile strength and performance. These materials can significantly enhance the tensile and torsional performance of the cable, so that the internal structure of the cable is stable when subjected to large tensile and torsional forces, preventing the core wire from shifting or deforming.

[0021] Conductor 1 is made of multiple strands of fine tin-plated soft copper wire, and insulation layer 2 is made of fluoroplastic. Fluoroplastics have the advantages of thin thickness, small outer diameter, excellent insulation performance, excellent mechanical properties, corrosion resistance, high and low temperature resistance, and excellent flame retardant properties.

[0022] The shielding layer 3 is woven from ultra-fine soft tin-plated copper wire. The high-density ultra-fine soft tin-plated copper wire braiding can ensure the flexibility of the cable and effectively prevent electromagnetic interference, thus achieving a metal shielding effect. The filling layer 4 is made of flame-retardant polypropylene, with multiple sets of insulated cores evenly arranged around the outer periphery of the filling layer 4. The wrapping layer 5 is made of non-woven fabric, and the outer sheath 6 is made of special insulating rubber. The insulating rubber is made of special rubber material that is resistant to high and low temperatures, highly flame-retardant, UV resistant, high-strength, and has high tear resistance. It has the advantages of being soft, resistant to high and low temperatures, flame-retardant, sunlight resistant, high-strength, and tear-resistant.

[0023] The interior of the filling layer 4 is provided with a tensile member 7, which is an iron wire.

[0024] Example 2

[0025] Please refer to Example 1. Figure 1 and Figure 2 The outer sheath 6 is also equipped with a fireproof layer 9 inside. The fireproof layer 9 is made of flame-retardant adhesive, asbestos, aluminum silicate and other materials. This fireproof layer 9 can resist the erosion of high temperature and flame and slow down the spread of fire. The outer sheath 6 is equipped with a flame-retardant layer 8 outside. The flame-retardant layer 8 is made of flame-retardant materials such as polyvinyl chloride, polyethylene, cross-linked polyethylene and other materials. These materials can delay or prevent the spread of flame when a fire occurs, thereby protecting the conductors inside the cable from damage.

[0026] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A fluoroplastic insulated, rubber-sheathed, metal-shielded field power feeder cable, characterized in that: It includes multiple sets of conductors (1), the conductors (1) are provided with an insulation layer (2) on the outside, the conductors (1) and the insulation layer (2) form an insulated wire core, the two sets of insulated wire cores are twisted together to form a twisted wire core, the twisted wire cores are provided with a shielding layer (3) on the outside, the twisted wire cores and the shielding layer (3) form a cable core, the cable cores are provided with a filling layer (4) on the outside, and the filling layer (4) is provided with multiple sets of insulated wire cores on the outside.

2. The fluoroplastic insulated rubber-sheathed metal-shielded field power feeder cable according to claim 1, characterized in that: The insulated wire core is provided with a wrapping layer (5) on the outside, and an outer sheath (6) is provided on the outside of the wrapping layer (5). Multiple sets of tensile-resistant layers (10) are provided inside the outer sheath (6).

3. The fluoroplastic insulated rubber-sheathed metal-shielded field power feeder cable according to claim 1, characterized in that: The conductor (1) is made of multiple strands of fine tin-plated soft copper wire, and the insulating layer (2) is fluoroplastic.

4. The fluoroplastic insulated rubber-sheathed metal-shielded field power feeder cable according to claim 2, characterized in that: The shielding layer (3) is woven from ultra-fine soft tin-plated copper wire, the filling layer (4) is flame-retardant polypropylene, and the outer protective layer (6) is insulating rubber.

5. The fluoroplastic insulated rubber-sheathed metal-shielded field power feeder cable according to claim 1, characterized in that: The filling layer (4) is provided with a tensile member (7).

6. The fluoroplastic insulated rubber-sheathed metal-shielded field power feeder cable according to claim 2, characterized in that: The outer protective layer (6) is further provided with a fireproof layer (9) inside, and a flame-retardant layer (8) is provided on the outside of the outer protective layer (6).

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