CN210925578U

CN210925578U - Compact armored cable

Info

Publication number: CN210925578U
Application number: CN201922429990.1U
Authority: CN
Inventors: 杨南彦
Original assignee: Guangzhou Aotong Wire And Cable Co ltd
Current assignee: Guangzhou Aotong Wire And Cable Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-03
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a pair of compact armoured cable includes: the four power wire core units are mutually and tightly attached together in a surrounding way, the cable also comprises a fixed-type buffer framework, a silica gel insulating layer, an outer shielding layer, a flame-retardant layer, an armor layer and a first outer sheath which are sequentially arranged from inside to outside, the fixed-type buffer framework is in a chain wheel shape, one inner ring part of the fixed-type buffer framework is tangent to the four power wire core units, wherein the special-shaped stranded conductor in the four power wire core units comprises a round section single core arranged in the center and stranded layers which are stranded in the preset number of layers in the circumferential direction of the round section single core, the directions of stranded wires of the adjacent stranded layers are opposite, the stranded layers are formed by stranding special-shaped conductors with the preset number of cross sections in a tile shape, the large gap existing between the round conductors in the prior art is eliminated, the outer diameter of the special-shaped stranded conductor under the same cross section is smaller, and the outer diameter of the, the cable inside is rationally distributed, and is compacter.

Description

Compact armored cable

Technical Field

The utility model relates to a cable field especially relates to a compact armoured cable.

Background

The cable is used as a bridge for transmitting electric energy or information, the importance of the cable is self-evident, at present, the cable is indispensable to be used in ocean construction, railways, urban construction and subway construction, different environments have different requirements on the cable, but the internal design of the current cable is not tight enough, after the cable is cut off, the cable cores arranged in the cable are loose, the gap between the cable and the outer sheath is large, the arrangement is disordered, meanwhile, conductors in each cable core are formed by twisting a preset number of round single conductors, the excircle of each twisted cable core is not round and smooth, and the large gap formed between the round single conductors cannot be filled, so that the outer diameter of the whole cable core is relatively large, the size of the whole cable is large, and the occupied space during laying is large.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the utility model provides a compact armoured cable eliminates the clearance between the sinle silk, and the external diameter of sinle silk is littleer under the same cross-section, and rationally distributed between each sinle silk, and the design of stereotyping makes whole root cable compacter.

To achieve the object, the utility model provides a compact armoured cable includes: four electric power sinle silk units, four electric power sinle silk unit all includes from inside to outside: the special-shaped stranded conductor comprises a round-section single core arranged at the center and stranded layers which are stranded in the circumferential direction of the round-section single core and have a preset number of layers, the stranded directions of the stranded layers adjacent to each other are opposite, and the stranded layers are formed by stranding a preset number of special-shaped conductors with tile-shaped cross sections; four electric power sinle silk unit is each other around hugging closely together, four electric power sinle silk unit still includes by interior and outer certain type buffering skeleton, a silica gel insulating layer, an outer shielding layer, a fire-retardant layer, an armor and a first oversheath that sets gradually, design buffering skeleton is sprocket form, and it has an interior annular portion and a relative outer ring portion, interior annular portion and four electric power sinle silk unit is tangent, outer ring portion follows the circumference arch of design buffering skeleton has predetermined quantity's dogtooth, these some dogteeth with silica gel insulating layer adaptation.

Preferably, the ply is provided with 2-5 plies.

Preferably, the power core unit further includes: the special-shaped stranded conductor comprises a wrapping belt layer and an anticorrosive layer, wherein the wrapping belt layer is arranged between the special-shaped stranded conductor and the first inner shielding layer, and the anticorrosive layer is arranged outside the insulating layer.

Preferably, the silica gel insulating layer with the interior anchor ring face of dogtooth adaptation is a wave form face, the wave form face includes a crest and a trough, the trough with the dogtooth adaptation, the crest with adjacent two form a buffering clearance between the dogtooth, improve resistance to compression and impact property.

Preferably, a buffer chamber is arranged on the convex tooth, and the buffer chamber is a circular chamber or an elliptical chamber, so that the compression resistance and the impact resistance are improved.

Preferably, the shaping buffer framework is a framework supported by chloroprene rubber.

Preferably, a filling layer is filled in a gap formed between the inner ring and the four power line core units, and a tensile rope is arranged between every two adjacent power line core units and the inner ring, so that the tensile property is improved.

Preferably, four the center that power core unit centers on still is equipped with a signal control sinle silk, the signal control sinle silk includes a pair of communication sinle silk, and this has a second internal shield layer and a second overcoat to the outer cladding in proper order of communication sinle silk, it has the PP rope to fill between second internal shield layer and this pair of communication sinle silk.

Preferably, the flame-retardant layer is a low-smoke halogen-free flame-retardant layer, so that the generation of toxic gas during combustion is reduced, and the environment is protected.

Preferably, the armor layer is formed by twisting a predetermined number of steel strips on the outer circumferential surface of the flame retardant layer, so that the cable is protected, and the bending resistance is improved.

The utility model has the advantages that:

the utility model provides a compact armoured cable, including four electric power core units hug closely together around each other, design buffering skeleton is sprocket form, and it has an inner loop portion and a relative outer ring portion, the inner loop portion is tangent with four electric power core units, has the effect of buffering design, makes four electric power core units arrange compacter simultaneously; wherein, four power core unit all includes from inside to outside: the utility model provides a heterotypic stranded conductor, heterotypic stranded conductor is in including setting up at a central round section single core and transposition the round section single core circumference the stranded layer of the predetermined number of piles of layers, and adjacent stranded layer stranded conductor opposite direction, the stranded layer is formed for the heterotypic conductor transposition of tile shape by predetermined quantity's cross section, has eliminated the big clearance that exists between the round conductor among the prior art, and this heterotypic stranded conductor's external diameter is littleer under the same cross-section, and then makes the external diameter of whole cable reduce, and inside cable is rationally distributed, and is compacter.

Drawings

Fig. 1 is a schematic structural diagram of a compact armored cable according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a signal control line core according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a power line core unit according to an embodiment of the present invention.

In the figure: 1-a first outer sheath, 2-an armor layer, 3-a flame retardant layer, 4-an outer shielding layer, 5-a silica gel insulating layer, 5 a-a wave crest, 5 b-a wave trough, 6-a sizing buffer framework, 6 a-a buffer chamber, 6 b-a convex tooth, 7-a buffer gap, 8-a power wire core unit, 9-a signal control wire core, 10-a filling layer, 11-a tensile rope, 80-an anticorrosive layer, 81-a first inner sheath, 82-a first inner shielding layer, 83-a belting layer, 84-a special-shaped stranded conductor, 84 a-a round section single core, 84 b-a special-shaped conductor, 90-a second outer sheath, 91-a second inner shielding layer, 92-a pp rope, 93-a communication wire core, 930-a second inner sheath, 931-a third inner shielding layer, 932-a communication conductor.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "middle", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

The terms "first," "second," and the like, as used herein, do not denote any order or order, nor do they limit the scope of the present application, but rather are used to distinguish one element from another element or operation described by the same technical terms.

Examples

Referring to fig. 1, the present embodiment provides a compact armored cable including four power core units 8, including: the four power wire core units 8 are mutually and tightly attached together in a surrounding manner, a signal control wire core 9 is further arranged in the center surrounded by the four power wire core units 8, the four power wire core units 8 further comprise a sizing buffer framework 6, a silica gel insulating layer 5, an outer shielding layer 4, a flame-retardant layer 3, an armor layer 2 and a first outer sheath 1 which are sequentially arranged from inside to outside, the sizing buffer framework 6 is in a chain wheel shape, it has an inner ring part and an opposite outer ring part, the inner ring part is tangent with the four power line core units 8, the outer ring part is provided with a preset number of convex teeth 6b along the circumferential direction of the shaping buffer framework 6, the convex teeth 6b are matched with the silica gel insulating layer 5, gaps formed between the inner ring and the four power wire core units 8 are filled with a filling layer 10, and a tensile rope 11 is arranged between every two adjacent power wire core units 8 and the inner ring.

The shaping buffer framework 6 is a framework supported by chloroprene rubber, a buffer chamber 6a is arranged on the convex teeth 6b, and the buffer chamber 6a is a circular chamber or an oval chamber; the silica gel insulating layer 5 with the interior annular surface of dogtooth 6b adaptation is a wave form face, the wave form face includes a crest 5a and a trough 5b, trough 5b with dogtooth 6b adaptation, crest 5a and adjacent two form a buffering clearance 7 between the dogtooth 6 b.

Referring to fig. 3 again, the following description is made of one of the four power line core units 8, where the power line core unit 8 sequentially includes, from inside to outside: a special-shaped twisted conductor 84, a belting layer 83, a first inner shielding layer 82, a first inner sheath 81 and an anti-corrosion layer 80, wherein the special-shaped twisted conductor 84 comprises a round section single core 84a arranged at the center and twisted layers twisted at 2-5 layers around the round section single core 84a, the directions of the twisted layers adjacent to each other are opposite, the twisted layers are formed by twisting a predetermined number of special-shaped conductors 84b with tile-shaped cross sections, the special-shaped conductors 84b are all provided with round corners, the outer circular surface of the special-shaped twisted conductor 84 is round and smooth, the belting layer 83 is covered on the outer circular surface of the special-shaped twisted conductor 84, the first inner shielding layer 82 is a shielding sleeve woven by copper wires and is covered outside the belting layer 83, the first inner sheath 81 is extruded outside the first inner shielding layer 82, the anti-corrosion layer 80 is arranged outside the first inner sheath, in the present embodiment, the ply is 3 plies.

In fig. 2, the signal control wire core 9 includes a pair of communication wire cores 93, the pair of communication wire cores 93 are sequentially wrapped with a second inner shielding layer 91 and a second outer sheath 90, a PP rope 92 is filled between the second inner shielding layer 91 and the pair of communication wire cores 93, and the pair of communication wire cores 93 are sequentially wrapped with a communication conductor 932, a third inner shielding layer 931 and a second inner sheath 930 twisted by copper wires from inside to outside.

Furthermore, the flame-retardant layer 3 is a low-smoke halogen-free flame-retardant layer 3, so that the generation of toxic gas during combustion is reduced, and the environment is protected.

Furthermore, the armor layer 2 is formed by twisting a predetermined number of steel belts on the outer circumferential surface of the flame retardant layer 3, so that the cable is protected, and meanwhile, the bending resistance is improved.

Further, the first outer sheath 1 is a polyvinyl chloride sheath.

Further, the filling layer 10 is a fire clay filling layer 10.

The above description is only for the specific embodiments of the present invention, but it should be understood by those skilled in the art that the present invention is only by way of example, and the scope of the present invention is defined by the appended claims. Therefore, the equivalent changes made in the claims of the present invention still belong to the scope covered by the present invention.

Claims

1. A compact armored cable, comprising: four electric power sinle silk units, four electric power sinle silk unit all includes from inside to outside: the special-shaped stranded conductor comprises a round-section single core arranged at the center and stranded layers which are stranded in the circumferential direction of the round-section single core and have a preset number of layers, the stranded directions of the stranded layers adjacent to each other are opposite, and the stranded layers are formed by stranding a preset number of special-shaped conductors with tile-shaped cross sections; four electric power sinle silk unit is each other around hugging closely together, four electric power sinle silk unit still includes by interior and outer certain type buffering skeleton, a silica gel insulating layer, an outer shielding layer, a fire-retardant layer, an armor and a first oversheath that sets gradually, design buffering skeleton is sprocket form, and it has an interior annular portion and a relative outer ring portion, interior annular portion and four electric power sinle silk unit is tangent, outer ring portion follows the circumference arch of design buffering skeleton has predetermined quantity's dogtooth, these some dogteeth with silica gel insulating layer adaptation.

2. The compact armored cable of claim 1, wherein the stranding layers are provided in 2-5 layers.

3. The compact armored cable of any one of claims 1-2, wherein the power core unit further comprises: the special-shaped stranded conductor comprises a wrapping belt layer and an anticorrosive layer, wherein the wrapping belt layer is arranged between the special-shaped stranded conductor and the first inner shielding layer, and the anticorrosive layer is arranged outside the insulating layer.

4. The compact armored cable of claim 3, wherein the inner annular surface of the silicone insulation layer fitted with the teeth is a corrugated surface, the corrugated surface comprises a wave crest and a wave trough, the wave trough is fitted with the teeth, and a buffer gap is formed between the wave crest and two adjacent teeth.

5. The compact armored cable of claim 4, wherein the teeth define a buffer chamber, the buffer chamber being a circular chamber or an elliptical chamber.

6. The compact armored cable of claim 5, wherein the shaped buffer skeletal frame is a neoprene supported skeletal frame.

7. The compact armored cable of claim 1, wherein the gaps formed between the inner ring and the four power core units are filled with a filling layer, and a tensile cord is disposed between two adjacent power core units and the inner ring.

8. The compact armored cable of claim 1, wherein a signal control core is further disposed in the center surrounded by the four power core units, the signal control core comprises a pair of communication cores, the pair of communication cores is sequentially covered with a second inner shielding layer and a second outer sheath, and a PP rope is filled between the second inner shielding layer and the pair of communication cores.

9. The compact armored cable of claim 1, wherein the flame-retardant layer is a low-smoke, halogen-free flame-retardant layer.

10. The compact armored cable of claim 1, wherein the armor layer is formed by twisting a predetermined number of steel tapes on an outer circumferential surface of the flame retardant layer.