Special direct current cable for rail transit

Abstract

The utility model discloses a rail transit dedicated DC cable comprising a tensile core, the periphery of the tensile core is provided with a conductor wire core, the periphery of the tensile core is sleeved with a tensile core sleeve, and the cross section of the tensile core sleeve is a regular hexagon; the cable comprises six groups of conductor wire cores, the periphery of each group of conductor wire cores is respectively sleeved with a wire core insulator, an elastic strip is arranged between two adjacent wire core insulators, the periphery of the elastic strip is sleeved with an insulating sheath, the periphery of the insulating sheath is provided with a corrugated sleeve, and the periphery of the corrugated sleeve is coated with an asphalt anticorrosive layer. According to the utility model, the core pulling sleeve and the wire core insulation assemblies are arranged to be regular hexagons, the structure is compact after assembly, and the elastic strips are arranged between the adjacent wire core insulation assemblies, so that the anti-pressure capability can be improved; and the galvanized aluminum foil layer and the asphalt anti-corrosion layer are arranged, so that the cable is waterproof and anti-corrosion, and the service life of the cable is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a direct current cable technical field especially relates to a track traffic special direct current cable. BACKGROUND

[0002] In modern urban track traffic, the track traffic cable is used everywhere. From providing power to traction transmission, from communication transmission to data transmission and detection, the track traffic cable is used everywhere.

[0003] The existing track traffic cable has relatively poor rainproof and anticorrosion performance, and cannot resist natural wind, sunlight and rain. Meanwhile, the compression resistance is relatively weak. UTILITY MODEL CONTENT

[0004] The utility model discloses a track traffic special direct current cable, which aims to solve the technical problem of poor rainproof, anticorrosion and compression resistance of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a track traffic special direct current cable, which comprises a tensile core, a conductor wire core is arranged on the periphery of the tensile core, a tensile core sleeve is sleeved on the periphery of the tensile core,

[0006] The tensile core sleeve section is a regular hexagon;

[0007] The conductor wire core is provided with six groups, and each group of the conductor wire core is respectively sleeved with a wire core insulation, an elastic strip is arranged between the adjacent two wire core insulations, an insulation sheath is sleeved on the periphery of the elastic strip, a corrugated sleeve is arranged on the periphery of the insulation sheath, and an asphalt anticorrosion layer is coated on the periphery of the corrugated sleeve.

[0008] Further, the tensile core sleeve section side length is equal to the wire core insulation section side length;

[0009] The insulation sheath is wrapped with an aluminum foil layer, and the aluminum foil layer is a galvanized aluminum foil.

[0010] Further, the conductor wire core and the wire core insulation are filled with a wire core filler;

[0011] The wire core insulation and the insulation sheath are filled with an external filler.

[0012] Further, the elastic strip section is an ellipse, and the material is silicone rubber.

[0013] Further, a shielding braid is arranged between the aluminum foil layer and the corrugated sleeve, and the braiding density of the shielding braid is greater than 75%.

[0014] Further, an outer sheath is sleeved on the periphery of the asphalt anticorrosion layer, and the outer sheath is made of polyvinyl chloride.

[0015] Further, the core filler and the outer filler material are both polypropylene or polyethylene.

[0016] The beneficial effects of the utility model are shown in:

[0017] In the utility model, the pull core sleeve and the core insulation assembly are both set as regular hexagons, the compact structure is obtained after assembly, the elastic strips are arranged between the adjacent core insulation assemblies, the compression resistance can be improved; meanwhile, the galvanized aluminum foil layer and the asphalt anticorrosive layer are arranged, the waterproof and anticorrosion are realized, and the service life of the cable is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0019] Fig. 2 It is a sectional view of the utility model.

[0020] EXPLANATION OF REFERENCE NUMERALS:

[0021] 1, tensile core, 2, pull core sleeve, 3, conductor core, 4, core filler, 5, core insulation, 6, elastic strip, 7, insulation sheath, 8, aluminum foil layer, 9, shielding braid, 10, corrugated sleeve, 11, asphalt anticorrosive layer, 12, outer sheath, 13, outer filler. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.

[0024] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, "multiple" refers to more than two. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist.

[0025] Referring to Figs. 1-2 The utility model discloses a rail transit special DC cable, including the tensile core 1, the tensile core 1 periphery is provided with the conductor wire core 3, the tensile core 1 periphery is sleeved with the tensile core cover 2,

[0026] The tensile core cover 2 section is regular hexagon;

[0027] The conductor wire core 3 is provided with six groups, and each group is provided with wire core insulation 5, and the elastic strip 6 is arranged between the adjacent two wire core insulations 5, the insulating sheath 7 is sleeved with the elastic strip 6 periphery, the corrugated sleeve 10 is provided with the asphalt anticorrosive layer 11 periphery.

[0028] In the utility model, the tensile core cover and the wire core cover are all set to regular hexagon, and the side length is equal, the wire core cover is attached to the tensile core cover periphery, and the structure is compact after assembling, the elastic strip is arranged between the adjacent wire core cover, and the compression resistance of the cable can be improved;Meanwhile, the zinc-plated aluminum foil layer and the asphalt anticorrosive layer are also provided, which can prevent water and corrosion, and prolong the service life of the cable.

[0029] In some embodiments, referring to Fig. 2 The section side length of the tensile core cover 2 is equal to the section side length of the wire core insulation 5;

[0030] The insulating sheath 7 is wrapped with the aluminum foil layer 8 periphery, and the aluminum foil layer 8 is zinc-plated aluminum foil.

[0031] In some embodiments, referring to Fig. 1 The conductor wire core 3 and the wire core insulation 5 are filled with the wire core filler 4;

[0032] The wire core insulation 5 and the insulating sheath 7 are filled with the outer filler 13.

[0033] In some embodiments, referring toFig. 2 As shown in the drawings, the elastic strip 6 is in the shape of an ellipse in cross section and is made of silicone rubber.

[0034] In some embodiments, referring to Fig. 1 As shown in the drawings, a shielding braid 9 is arranged between the aluminum foil layer 8 and the corrugated sleeve 10, and the shielding braid 9 has a braid density greater than 75%.

[0035] In some embodiments, referring to Fig. 1 As shown in the drawings, an outer sheath 12 is arranged around the periphery of the asphalt anticorrosive layer 11, and the outer sheath 12 is made of polyvinyl chloride.

[0036] In some embodiments, referring to Fig. 2 As shown in the drawings, the core filler 4 and the outer filler 13 are both made of polypropylene or polyethylene.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A railway transportation dedicated DC cable comprising a tensile core (1) which is peripherally provided with a conductor core (3), characterized in that The anti-pulling core (1) is peripherally sleeved with a pulling core sleeve (2), The pulling core sleeve (2) has a hexagonal cross section; The conductor core (3) is provided with six groups, each group of the conductor core (3) is peripherally sleeved with a core insulation (5), and an elastic strip (6) is arranged between two adjacent core insulations (5), the elastic strip (6) is peripherally sleeved with an insulation sheath (7), the insulation sheath (7) is peripherally provided with a corrugated sleeve (10), and the corrugated sleeve (10) is coated with an asphalt anticorrosive layer (11).

2. The DC cable for rail transit according to claim 1, wherein, The pulling core sleeve (2) has a hexagonal cross section; The insulation sheath (7) is peripherally wrapped with an aluminum foil layer (8), and the aluminum foil layer (8) is a galvanized aluminum foil.

3. The DC cable for rail transit according to claim 1, wherein, The conductor core (3) and the core insulation (5) are filled with a core filler (4); The core insulation (5) and the insulation sheath (7) are filled with an outer filler (13).

4. The DC cable for rail transit according to claim 1, wherein, The elastic strip (6) has an elliptical cross section and is made of silicone rubber.

5. The DC cable for rail transit according to claim 2, wherein, The aluminum foil layer (8) and the corrugated sleeve (10) are provided with a shielding woven mesh (9), and the shielding woven mesh (9) has a weaving density greater than 75%.

6. The DC power cable for rail transit of claim 1, wherein, The asphalt anticorrosive layer (11) is peripherally sleeved with an outer sheath (12), and the outer sheath (12) is made of polyvinyl chloride.

7. The DC cable for rail transit as claimed in claim 3, wherein, The core filler (4) and the outer filler (13) are both made of polypropylene or polyethylene.

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