High-voltage jumper cable for motor train unit

Abstract

The utility model provides a high-voltage jumper cable for a motor train unit, which belongs to the technical field of cables and comprises a cable body, the cable body comprises an elastic framework, a plurality of openings are arranged on the elastic framework at equal intervals in a surrounding manner, a wire core is arranged in each opening, a modified polyvinyl chloride insulating layer is arranged outside each wire core, and the modified polyvinyl chloride insulating layer is arranged outside the modified polyvinyl chloride insulating layer. A modified polyvinyl chloride insulating layer is arranged on the base, a shielding tape is arranged on the modified polyvinyl chloride insulating layer, the shielding tape is spirally wound on the modified polyvinyl chloride insulating layer, the modified polyvinyl chloride insulating layer comprises a plurality of aluminum wires which are woven with one another, and each aluminum wire is provided with an anti-oxidation coating. According to the utility model, the overall toughness and bending performance of the cable are improved, wiring and winding in a bridging area of the motor train unit are facilitated, the influence of a sleeve structure formed by existing metal wires is avoided very conveniently and effectively, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of cables, in particular to a high-voltage jumper cable for a motor vehicle group. Background Art

[0002] Cables are generally composed of three parts: conductor, insulation layer and protective layer. They are laid underground, in the air, etc. There are usually two types of cables: power cables and control cables. Power cables are mainly used for the transmission and distribution of electric energy, while control cables are mainly used for measurement, protection, control and other lines. Cables have the characteristics of internal power supply and external insulation.

[0003] Among them, high-voltage cable is a type of power cable, which refers to power cables used to transmit power between 1kv-1000kv, and is mostly used in power transmission and distribution. The components of high-voltage cable from the inside to the outside include: conductor, insulation, inner sheath, filler (armor), and outer insulation. Due to the particularity of the working environment, the cables used for EMUs have strong electromagnetic interference, and a shielding layer needs to be added inside the cable. The shielding layer is mainly woven into a sleeve structure with metal wires and is sleeved on the core of the cable. However, this sleeve structure composed of metal wires will reduce the overall toughness of the cable and will also greatly reduce the bending performance of the cable. In the area where the EMU is bridged, the high-voltage cable needs to be passed through the clamps on the thin plate and wrapped around the bracket to form a double helix winding. The cable has a large degree of bending. Due to the influence of the sleeve structure composed of metal wires, the difficulty of winding is increased, and it is inconvenient to install. Utility Model Content

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too simple, and provides a solution that is significantly different from the existing technologies. Specifically, the present invention mainly provides a high-voltage jumper cable for EMUs, which is used to solve the problem raised in the above background technology that the shielding layer in the current high-voltage cable generally adopts a structure of a sleeve woven with metal wires, but this structure will reduce the bending performance of the cable, making it difficult to bend. When wiring in the area where the EMU is jumped, there is a technical problem that it is difficult to wind the wire on the bracket.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A high-voltage jumper cable for a train set comprises a cable body, wherein the cable body comprises an elastic skeleton, a plurality of openings are arranged around the elastic skeleton at equal intervals, a wire core is arranged in each of the openings, a modified polyvinyl chloride insulation layer is arranged outside the wire core, a shielding tape is arranged on the modified polyvinyl chloride insulation layer, the shielding tape is spirally wound on the modified polyvinyl chloride insulation layer, the modified polyvinyl chloride insulation layer comprises a plurality of aluminum wires woven with each other, and an anti-oxidation coating is arranged on each of the aluminum wires.

[0007] Furthermore, a high temperature resistant protective layer is provided on the structural layer formed by the shielding tape.

[0008] Furthermore, a halogen-free and low-smoke outer sheath is provided on the high-temperature resistant protective layer.

[0009] Furthermore, the thickness of the high temperature resistant protective layer and the modified polyvinyl chloride insulation layer are the same, and the thickness of the modified polyvinyl chloride insulation layer is less than the thickness of the halogen-free low-smoke outer sheath.

[0010] Furthermore, each of the wire cores comprises a copper conductor and an insulating sleeve, and a compressive elastic filling block is arranged in the gap between the wire core and the modified polyvinyl chloride insulating layer.

[0011] Furthermore, a reinforcing rib is arranged in the through hole in the middle of the elastic skeleton.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model improves the overall toughness and bending performance of the cable while ensuring shielding of electromagnetic interference through the provision of an elastic skeleton, a wire core, a modified polyvinyl chloride insulation layer, a shielding tape, an aluminum wire, an antioxidant coating, a high-temperature resistant protective layer, a halogen-free and low-smoke outer sheath, a compressive elastic filling block and reinforcing ribs, which is convenient for wiring and winding in the jumper area of ​​the EMU, effectively avoids the influence of the existing metal wire sleeve structure, reduces the labor intensity of the staff, and at the same time improves the strength and service life of the shielding layer, and has certain practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross section of the aluminum wire of the present utility model.

[0018] In the figure: 1. cable body; 11. elastic skeleton; 111. opening; 12. core; 121. copper conductor; 122. insulating sleeve; 13. modified polyvinyl chloride insulation layer; 14. shielding tape; 141. aluminum wire; 142. antioxidant coating; 15. high temperature resistant protective layer; 16. halogen-free low-smoke outer sheath; 17. compressive elastic filling block; 2. reinforcing ribs. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] Please refer to the attached Figure 1-3 A high-voltage jumper cable for a train set includes a cable body 1, the cable body 1 includes an elastic skeleton 11, a plurality of openings 111 are arranged around the elastic skeleton 11 at equal intervals, a wire core 12 is arranged in each of the openings 111, a modified polyvinyl chloride insulation layer 13 is arranged outside the wire core 12, a shielding tape 14 is arranged on the modified polyvinyl chloride insulation layer 13, the shielding tape 14 is spirally wound on the modified polyvinyl chloride insulation layer 13, the modified polyvinyl chloride insulation layer 13 includes a plurality of mutually woven aluminum wires 141, and an anti-oxidation coating 142 is arranged on each of the aluminum wires 141.

[0023] Through the above structure, it is achieved that the overall toughness and bending performance of the cable are improved while ensuring shielding of electromagnetic interference, which facilitates wiring and winding in the jumper area of ​​the EMU, is very convenient, effectively avoids the influence of the existing metal wire sleeve structure, reduces the labor intensity of the staff, and at the same time improves the strength and service life of the shielding layer, and has certain practical value.

[0024] Please refer to the attached Figure 2 and attached Figure 3A high temperature resistant protective layer 15 is arranged on the structural layer formed by the shielding tape 14. The high temperature resistant protective layer 15 improves the high temperature resistance of the cable as a whole. A halogen-free low-smoke outer sheath 16 is arranged on the high temperature resistant protective layer 15. The halogen-free low-smoke outer sheath 16 ensures that the cable will not release halogen-containing gas when it is burning, and the smoke concentration is low. The high temperature resistant protective layer 15 and the modified polyvinyl chloride insulation layer 13 have the same thickness, and the thickness of the modified polyvinyl chloride insulation layer 13 is less than the thickness of the halogen-free low-smoke outer sheath 16. Each of the cores 12 includes a copper conductor 121 and an insulating sleeve 122, and a compressive elastic filling block 17 is arranged in the gap between the core 12 and the modified polyvinyl chloride insulation layer 13. The compressive elastic filling block 17 is used to fill the gap, improve the compressive resistance of the cable, weaken the external force, and protect the core 12. A reinforcing rib 2 is arranged in the through hole in the middle of the elastic skeleton 11. The reinforcing rib 2 improves the overall toughness of the cable.

[0025] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A high-voltage jumper cable for a train set, comprising a cable body (1), the cable body (1) comprising an elastic skeleton (11), a plurality of openings (111) being arranged on the elastic skeleton (11) at equal intervals, a wire core (12) being arranged in each of the openings (111), and a modified polyvinyl chloride insulation layer (13) being arranged outside the wire core (12), characterized in that: A shielding tape (14) is provided on the modified polyvinyl chloride insulation layer (13), and the shielding tape (14) is spirally wound on the modified polyvinyl chloride insulation layer (13). The modified polyvinyl chloride insulation layer (13) comprises a plurality of aluminum wires (141) braided with each other, and each of the aluminum wires (141) is provided with an anti-oxidation coating (142).

2. A high voltage jumper cable for a train set according to claim 1, characterized in that: A high temperature resistant protective layer (15) is provided on the structural layer formed by the shielding tape (14).

3. A high voltage jumper cable for EMU according to claim 2, characterized in that: A halogen-free and low-smoke outer sheath (16) is provided on the high-temperature resistant protective layer (15).

4. A high voltage jumper cable for EMU according to claim 3, characterized in that: The high temperature resistant protective layer (15) and the modified polyvinyl chloride insulation layer (13) have the same thickness, and the thickness of the modified polyvinyl chloride insulation layer (13) is smaller than the thickness of the halogen-free low-smoke outer sheath (16).

5. A high voltage jumper cable for EMU according to claim 1, characterized in that: Each of the wire cores (12) comprises a copper conductor (121) and an insulating sleeve (122), and a compression-resistant elastic filling block (17) is provided in the gap between the wire core (12) and the modified polyvinyl chloride insulating layer (13).

6. A high voltage jumper cable for EMU according to claim 1, characterized in that: A reinforcing rib (2) is provided in the through hole in the middle of the elastic skeleton (11).

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