Signal cable and power supply system

Abstract

The utility model relates to a signal cable and a power supply system. The signal cable comprises a cable core, a metal braid layer and an outer sheath layer. The cable core comprises a plurality of wire cores and a filling piece, and the plurality of wire cores are twisted outside the filling piece; each wire core comprises a conductor, an insulating layer is coated outside the conductor, a metal wrapping tape is coated outside the insulating layer, a metal winding layer is coated outside the metal wrapping tape, and an inner protection layer is extruded outside the metal winding layer; the metal braid layer wraps the cable core. And the outer protective layer is coated outside the metal braid layer. According to the signal cable, the internal shielding layer and the external shielding layer are arranged to form a double shielding effect, so that the capability of resisting external electromagnetic interference of the signal cable is greatly improved; and the internal shielding layers shield the cable cores respectively, so that the cable cores in the cable do not interfere with each other, and the internal shielding layers are wrapped by the internal protection layers to realize mutual non-conduction between the internal shielding layers, so that the shielding efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a signal cable and power supply system. Background Technology

[0002] Signal cables are tools used for signal transmission. They are mainly used for signal transmission in various sensors, instruments, etc. They can effectively prevent signals from being interfered with by external factors and ensure stable signal transmission. They are widely used in many fields such as aerospace, artificial intelligence, new energy, wind power, and medical care.

[0003] Signal cables in power supply systems are typically used together with power supply cables, control cables, and other types of cables in complex environments. These cables are susceptible to interference from various external electromagnetic fields. Existing signal cables have weak anti-interference capabilities and cannot guarantee stable signal transmission. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that in the prior art, signal cables in power supply systems are generally used together with power supply cables, control cables and other cables, the use environment is relatively complex, and signal cables are subject to interference from various external electromagnetic fields; the existing signal cables have weak anti-interference ability and cannot guarantee stable signal transmission.

[0005] To solve the above-mentioned technical problems, this utility model provides a signal cable, comprising,

[0006] The cable core includes wire cores and filler. Multiple wire cores are provided and twisted together outside the filler. Each wire core includes a conductor. The conductor is covered with an insulation layer. The insulation layer is covered with a metal tape. The metal tape is covered with a metal winding layer, and the metal winding layer is extruded with an inner sheath.

[0007] A metal braided layer, which covers the outside of the cable core;

[0008] An outer protective layer, which covers the metal braided layer.

[0009] In one embodiment of this utility model, the conductor is made of multiple oxygen-free annealed tin-plated copper wires twisted together.

[0010] In one embodiment of this utility model, the insulating layer is made of two-step silane cross-linked polyethylene material.

[0011] In one embodiment of this utility model, the metal strap is an aluminum-plastic composite strap.

[0012] In one embodiment of this utility model, the metal winding layer is composed of tin-plated copper wire obliquely wrapped around the metal wrapping strip.

[0013] In one embodiment of this utility model, the metal braided layer is woven from multiple tin-plated copper wires.

[0014] In one embodiment of this utility model, the inner protective layer is a modified easily tearable polyvinyl chloride inner protective layer.

[0015] In one embodiment of this utility model, the outer protective layer is made of polyethylene, polyvinyl chloride or low-smoke halogen-free material.

[0016] In one embodiment of this utility model, the filler is made of polyester fiber or cotton yarn.

[0017] A power supply system comprising a signal cable as described in any of the preceding claims.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a signal cable and power supply system, comprising a cable core, a metal braided layer, and an outer sheath. The cable core includes conductors and fillers, with multiple conductors twisted together around the fillers. Each conductor includes a conductor covered by an insulation layer, which is then covered by a metal tape. The metal tape is further covered by a metal winding layer, and an inner sheath is extruded over the metal winding layer. The metal braided layer covers the cable core, and the outer sheath covers the metal braided layer. This signal cable achieves a double shielding effect through two sets of shielding layers, significantly improving its resistance to external electromagnetic interference. Furthermore, the internal shielding layers individually shield each conductor, preventing interference between them. The inner sheath covering each internal shielding layer further de-conducts between the internal shielding layers, enhancing shielding efficiency. The entire signal cable exhibits excellent anti-interference capabilities against both internal structure and external environment, ensuring stable signal transmission. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the signal cable according to a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the cable core of the signal cable according to a preferred embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the core structure of the signal cable according to a preferred embodiment of the present invention.

[0024] Explanation of reference numerals in the accompanying drawings: 1. Cable core; 11. Wire core; 111. Conductor; 112. Insulation layer; 113. Metal wrapping tape; 114. Metal winding layer; 115. Inner sheath; 12. Filler; 2. Metal braided layer; 3. Outer sheath. 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. Example 1

[0026] Reference Figure 1 , Figure 2 and Figure 3 As shown, a signal cable of this utility model includes,

[0027] Cable core 1 includes wire core 11 and filler 12. Multiple wire cores 11 are provided and twisted together outside the filler 12. Each wire core 11 includes a conductor 111. The conductor 111 is covered with an insulation layer 112. The insulation layer 112 is covered with a metal wrapping tape 113. The metal wrapping tape 113 is covered with a metal winding layer 114. The metal winding layer 114 is covered with an inner sheath 115.

[0028] Metal braided layer 2, which covers the outside of cable core 1;

[0029] Outer protective layer 3, which covers the metal braided layer 2.

[0030] Specifically, the metal tape 113 and the metal winding layer 114 form the inner shielding layer, while the metal braided layer 2 serves as the outer shielding layer. These two shielding layers create a double shielding effect, significantly improving the signal cable's resistance to external electromagnetic interference. Furthermore, the inner shielding layer individually shields each wire core 11, preventing interference between them. Additionally, the inner sheath 115 covering each inner shielding layer ensures that the inner shielding layers are not interconnected, further enhancing shielding efficiency. The entire signal cable exhibits excellent anti-interference capabilities, both internally and externally, ensuring stable signal transmission.

[0031] Furthermore, conductor 111 is made of multiple oxygen-free annealed tin-plated copper wires stranded together. Oxygen-free annealed tin-plated copper wires have low resistance and high conductivity, as well as good corrosion resistance, and also have good flexibility and mechanical strength. They can maintain good conductivity during bending and stretching, thus enabling the cable to adapt to installation and use in various complex environments.

[0032] Furthermore, the insulation layer 112 is made of two-step silane cross-linked polyethylene. Specifically, two-step silane cross-linked polyethylene is a cross-linked polyethylene material with unique properties. It uses a two-step cross-linking technology, which introduces a silane cross-linking agent to cross-link polyethylene under high temperature and pressure to form a polymer material with excellent properties. It can withstand soldering at 380℃ without shrinking, thereby improving the cable's anti-shrinkage ability and preventing short circuits or even fires caused by the insulation layer 112 shrinking due to heat and exposing the conductor.

[0033] Furthermore, the metal sheath 113 is an aluminum-plastic composite tape. This tape not only isolates electromagnetic interference but also effectively protects the cable from external physical damage and chemical corrosion, providing extra protection, especially during cable laying. Additionally, the aluminum-plastic composite tape effectively isolates oxygen and moisture, improving the cable's corrosion resistance and service life.

[0034] Furthermore, the metal winding layer 114 is composed of tin-plated copper wires obliquely wrapped around the metal wrapping tape 113, which not only serves to shield external electromagnetic interference, but also enhances the tensile strength of the entire cable.

[0035] Furthermore, the metal braid layer 2 is woven from multiple tin-plated annealed soft copper wires. Specifically, the metal braid layer 2 not only serves to shield interference signals, but also provides mechanical protection and enhances the tensile strength and abrasion resistance of the cable.

[0036] Furthermore, the inner sheath 115 is made of modified easily tearable polyvinyl chloride. The inner sheath 115 serves to isolate the internal shielding layers and protect the internal structure of each core 11.

[0037] Furthermore, the outer sheath 3 is made of polyethylene, polyvinyl chloride or low-smoke halogen-free materials with a certain temperature resistance level, which not only protects the internal structure of the cable, but also improves the flame retardancy of the cable.

[0038] Furthermore, the filler 12 is made of polyester fiber or cotton yarn. The filler 12 helps to improve the tensile strength and bending resistance of the cable, and can keep the relative position between each core 11 stable, which helps to improve the overall strength of the cable. Example 2

[0039] This utility model also discloses a power supply system, including a signal cable as described in Embodiment 1.

[0040] 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 signal cable, characterized in that, include: The cable core includes wire cores and filler. Multiple wire cores are provided and twisted together outside the filler. Each wire core includes a conductor. The conductor is covered with an insulation layer. The insulation layer is covered with a metal tape. The metal tape is covered with a metal winding layer, and the metal winding layer is extruded with an inner sheath. A metal braided layer, which covers the outside of the cable core; An outer protective layer, which covers the metal braided layer.

2. The signal cable according to claim 1, characterized in that: The conductor is made of multiple oxygen-free annealed tin-plated copper wires twisted together.

3. The signal cable according to claim 1, characterized in that: The insulating layer is made of two-step silane cross-linked polyethylene.

4. The signal cable according to claim 1, characterized in that: The metal strapping is an aluminum-plastic composite strapping.

5. The signal cable according to claim 1, characterized in that: The metal winding layer is composed of tin-plated copper wires obliquely wrapped around the metal wrapping strip.

6. The signal cable according to claim 1, characterized in that: The metal braided layer is woven from multiple tin-plated copper wires.

7. The signal cable according to claim 1, characterized in that: The inner protective layer is made of modified easily tearable polyvinyl chloride.

8. The signal cable according to claim 1, characterized in that: The outer protective layer is made of polyethylene, polyvinyl chloride, or low-smoke halogen-free materials.

9. The signal cable according to claim 1, characterized in that: The filler is made of polyester fiber or cotton yarn.

10. A power supply system, characterized in that: Includes the signal cable as described in any one of claims 1-9.

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