CN221899782U - Torsion-resistant cable - Google Patents
Torsion-resistant cable Download PDFInfo
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- CN221899782U CN221899782U CN202420454901.7U CN202420454901U CN221899782U CN 221899782 U CN221899782 U CN 221899782U CN 202420454901 U CN202420454901 U CN 202420454901U CN 221899782 U CN221899782 U CN 221899782U
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- layer
- torsion
- cable
- resistant cable
- armor
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- 239000010410 layer Substances 0.000 claims abstract description 125
- 239000002346 layers by function Substances 0.000 claims abstract description 29
- 239000011241 protective layer Substances 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims description 21
- -1 polypropylene Polymers 0.000 claims description 19
- 229920001155 polypropylene Polymers 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 206010066054 Dysmorphism Diseases 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 3
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000003063 flame retardant Substances 0.000 description 7
- 239000000779 smoke Substances 0.000 description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses an anti-torsion cable, which comprises a cable core, a functional layer and a protective layer, wherein the functional layer wraps the cable core, the protective layer wraps the functional layer, the functional layer comprises a special-shaped supporting layer, an elastic supporting tube, an armor layer and a wrapping layer, the special-shaped supporting layer is provided with a plurality of arc structures contacted with the wrapping layer, the elastic supporting tube is arranged between adjacent arc structures and contacted with the wrapping layer, the wrapping layer wraps the outer side of the armor layer, and the armor layer is paved on the outer side of the cable core; according to the utility model, by adding the functional layer, the torsion resistance, compression resistance and tensile resistance of the cable are improved, and the service life of the cable is prolonged.
Description
Technical Field
The utility model belongs to the field of cables, and particularly relates to a torsion-resistant cable.
Background
A power cable is a device for transmitting power, generally composed of an internal wire and an external insulating sheath, and is widely used in various fields such as aerospace, transportation and construction.
Most of cables used in the existing building field are crosslinked polyethylene and polyvinyl chloride cables, and the cables have the problems of quick reduction of electrical insulation performance, poor anti-interference capability, poor mechanical performance and the like; in the prior art, various solutions have been developed to address these problems, such as the cable structure (as shown in fig. 1) as provided in prior art CN110690008 a: the tin-plated copper metal monofilament 10, the high-strength aramid fiber 20, the inner semiconductive shielding layer 30, the (prior art) insulating layer 40, the outer semiconductive shielding layer 50, the tin-plated copper metal monofilament 60, the polyimide film layer 70 and the sheath 80 are sequentially arranged from inside to outside, and after the improvement of the prior art, the electrical insulation performance, the anti-interference performance and the mechanical performance are obviously improved;
However, in practical application of the cable, especially as application of a hidden line, the actual laying scene has a large number of right angles, the folding and pressing of the cable cannot be avoided, and the cable is subjected to tension, compression and torsion in the cable laying process, and after the cable is installed, the stresses are reserved, and the stability and the life cycle of the cable are affected under the long-term various stress effects.
Disclosure of utility model
In order to solve the defects in the prior art, the application discloses an anti-torsion cable which comprises a cable core, a functional layer and a protective layer, wherein the cable core is wrapped by the functional layer, the functional layer is wrapped by the protective layer, the functional layer comprises a special-shaped supporting layer, an elastic supporting tube, an armor layer and a wrapping layer, the special-shaped supporting layer is provided with a plurality of arc structures which are contacted with the wrapping layer, the elastic supporting tube is arranged between the adjacent arc structures and is contacted with the wrapping layer, the wrapping layer is wrapped on the outer side of the armor layer, and the armor layer is laid on the outer side of the cable core.
The cable core comprises a stranded multi-core conductor, an inner shielding layer, a polypropylene insulating layer and an outer shielding layer, wherein the inner shielding layer is wrapped on the outer side of the stranded multi-core conductor, the polypropylene insulating layer is wrapped on the outer side of the inner shielding layer, and the outer shielding layer is wrapped on the outer side of the polypropylene insulating layer.
The stranded multi-core conductor is formed by stranding a plurality of copper wires with the same diameter in the same direction.
The armor layer comprises steel wires.
The elastic support tube is a hollow tube.
The arc structures of the special-shaped supporting layer are symmetrically arranged.
A plurality of the arcuate structures each contact an outer surface of the wrap.
The elastic support tubes are arranged among the arc-shaped structures.
The elastic support tubes are in a plurality, and the elastic support tubes are in contact with the outer surface of the wrapping layer.
The arc-shaped structure is located on the inner side of the special-shaped supporting layer, and the outer surfaces of the special-shaped supporting layer are wrapped by the protective layer.
The application has the following advantages:
Specifically, the special-shaped supporting layer 8 in the functional layer 11 has high-strength and high-toughness performance, and has tensile, compressive and supporting functions on the wire core 10;
Specifically, the elastic supporting tube 7 in the functional layer 11 is a hollow tube with high elastic energy, and provides a certain buffering function for the wire core 10 when being pressed by external force;
Specifically, the wrapping layer 6 in the functional layer 11 has high-strength low-friction performance, so that the elastic supporting tube 7 and the special-shaped supporting layer 8 of the outer layer can rotate when being twisted under a large force, and the wire core 10 is protected from being twisted;
in particular, the armour layer 5 in the functional layer 11 has a high tensile strength for resisting the tensile forces to which the cable is subjected.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described.
Fig. 1 is a schematic diagram of a prior art cable.
Fig. 2 is a schematic cross-sectional view of the torsion cable of the present application.
Detailed Description
The following will describe the technical scheme of the embodiment of the utility model clearly and completely; the utility model will be further described with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making any creative effort belong to the protection scope of the present utility model and are clearly and completely described below in connection with the technical solutions of the embodiments of the present utility model; the azimuth expressions, such as upper, lower and the like, related in the utility model are all positioned in the view arrangement mode of the utility model;
In order to solve the defects in the prior art, the application discloses an anti-torsion cable which comprises a cable core, a functional layer and a protective layer 9, wherein the cable core is wrapped by the functional layer, the protective layer 9 is wrapped by the functional layer, the functional layer comprises a special-shaped supporting layer 8, an elastic supporting tube 7, an armor layer 5 and a wrapping layer 6, the special-shaped supporting layer 8 is provided with a plurality of arc structures which are contacted with the wrapping layer 6, the elastic supporting tube 7 is arranged between the adjacent arc structures and is contacted with the wrapping layer 6, the wrapping layer 6 is wrapped on the outer side of the armor layer 5, and the armor layer 5 is paved on the outer side of the cable core.
The cable core comprises a stranded multi-core conductor 1, an inner shielding layer 2, a polypropylene insulating layer 3 and an outer shielding layer 4, wherein the inner shielding layer 2 is wrapped on the outer side of the stranded multi-core conductor 1, the polypropylene insulating layer 3 is wrapped on the outer side of the inner shielding layer 2, and the outer shielding layer 4 is wrapped on the outer side of the polypropylene insulating layer 3.
The stranded multi-core conductor 1 is formed by stranding a plurality of copper wires with the same diameter in the same direction.
The armour layer 5 comprises steel wires.
The elastic support tube 7 is a hollow tube.
A plurality of arc structures of the special-shaped supporting layer 8 are symmetrically arranged.
A plurality of the arcuate structures each contact the outer surface of the wrap 6.
The elastic support tubes 7 are arranged among the arc structures.
The elastic support tubes 7 are plural, and the plural elastic support tubes 7 contact the outer surface of the wrapping layer 6.
The arc-shaped structure is positioned on the inner side of the special-shaped supporting layer, and the outer surfaces of the special-shaped supporting layer are wrapped by the protective layer 9.
The utility model has the following beneficial effects:
According to the utility model, the special-shaped supporting layer and the protective layer are distributed on the outer side of the wire core, the protruding arc-shaped structure with the special-shaped supporting layer is in tangential contact with the wire core but not connected, the contact area is small, the section of the elastic supporting tube is circular, and the cable can be self-adaptively rotated when being twisted under high force in the construction and laying process, so that the internal wire core is not twisted, and the wire core structure is not damaged.
The utility model adopts the stranded multi-core conductor to conduct electricity, and the spirally arranged conductive wires can enhance the tensile and torsion resistance of the cable.
The special-shaped support layer and the wrapping layer are provided with a certain gap to provide a space for bending or pressing the cable, and the elastic support tube is of an elastic hollow structure, so that buffering and deformation required during bending and pressing can be provided, damage to the cable caused by extrusion is greatly reduced, and reliability of the cable in the actual operation period is improved.
According to the utility model, polypropylene is used as an insulating layer material of the cable, so that the electrical insulation performance and long-term operation temperature of the cable are further improved, and the cable can be recycled, so that the cable meets the conventional performance and is more environment-friendly.
In conclusion, the utility model reduces the maintenance cost and the potential safety hazard of the cable by mutually matching the arrangement sequence, the structural design and the material optimization of the protective layer, the functional layer and the wire core, and meets the requirement of the compressive, tensile, torsional and long-life thermoplastic insulated cable for building;
preferably, the inner shielding layer and the outer shielding layer are both composed of polypropylene as a main material and conductive filler.
Preferably, the polypropylene insulating layer is made of a polypropylene material.
Preferably, the armor layer is a fine wire armor.
Preferably, the wrapping layer is polytetrafluoroethylene.
Preferably, the elastic supporting tube is made of TPU material.
Preferably, the special-shaped supporting layer is isotactic polypropylene, and net-shaped anti-lacing wires are distributed in the special-shaped supporting layer.
Preferably, the protective layer is a low-smoke halogen-free flame-retardant sheath.
Preferably, when the compression-resistant, tensile-resistant and torsion-resistant long-life thermoplastic insulated cable for the building comprises two or more wire cores, a PP flame-retardant strip is filled between the wire cores, the two or more wire cores are wrapped together by a PP flame-retardant wrapping tape, and the PP flame-retardant wrapping tape is wrapped by an armor layer.
Example 1
Referring to fig. 2, fig. 2 is a schematic cross-sectional structure diagram of a long-life thermoplastic insulated cable for building according to an embodiment of the present utility model. The utility model provides a long-life thermoplastic insulated cable of resistance to compression, tensile antitorque commentaries on classics for building, includes sinle silk, functional layer and inoxidizing coating 9, inoxidizing coating 9 parcel is in the functional layer outside, the functional layer includes dysmorphism supporting layer 8, elasticity stay tube 7, around covering 6 and armor 5, dysmorphism supporting layer 8 be provided with a plurality of arc structures that contact around covering 6, elasticity stay tube 7 sets up between adjacent arc structures to contact around covering 6, around covering 6 parcel is in the armor 5 outside, armor 5 lays in the sinle silk outside,
The cable core comprises a stranded multi-core conductor 1, an inner shielding layer 2, a polypropylene insulating layer 3 and an outer shielding layer 4, wherein the inner shielding layer 2 is wrapped on the outer side of the stranded multi-core conductor 1, the polypropylene insulating layer 3 is wrapped on the outer side of the inner shielding layer 2, and the outer shielding layer 4 is wrapped on the outer side of the polypropylene insulating layer 3.
Specifically, the special-shaped supporting layer 8 in the functional layer has high strength and toughness, and has tensile, compressive and supporting functions on the wire core;
specifically, the elastic supporting tube 7 in the functional layer is a hollow tube with high elastic energy, and provides a certain buffer function for the wire core when the wire core is pressed by external force;
Specifically, the wrapping layer 6 in the functional layer has high-strength low-friction performance, so that the elastic supporting tube 7 and the special-shaped supporting layer 8 of the outer layer can rotate when being twisted under high force, and the wire core is protected from being twisted;
In particular, the armour layers 5 in the functional layer have a high tensile strength for resisting the tensile forces to which the cable is subjected.
Specifically, the inner shielding layer 2 in the wire core eliminates the increase of the local electric field intensity on the surface of the conductor caused by the unsmooth surface of the conductor, the outer shielding layer 4 further shields the electric field, and the two improve the anti-interference capability during the operation of the cable.
Specifically, the polypropylene insulating layer 3 in the wire core has higher electrical insulating property, and the running stability of the cable is enhanced.
Specifically, the stranded multi-core conductor 1 in the wire core is formed by regularly stranding a plurality of copper wires with the same diameter in the same direction, and has higher tensile capacity and torsion resistance compared with the copper conductors with the same square number.
Specifically, the protective layer 9 is a low-smoke halogen-free flame retardant sheath, and provides flame retardant performance for the cable. LSZH is an acronym of "Low Smoke Zero Halogen" (low smoke, halogen-free) in english to denote a non-halogenated flame retardant cable jacket material. The cable sheath material has excellent fireproof safety characteristics of low smoke, low toxicity and low corrosion, and is suitable for application environments such as concentrated office areas, public transportation railway systems, nuclear power plants, oil refineries and the like, thereby protecting personnel and equipment from toxic and corrosive gases. The relevant application of the low smoke zero halogen network wire will be focused on herein; the low-smoke halogen-free flame retardant material is preferably polyurethane material;
working principle:
The utility model relates to a long-life thermoplastic insulated cable for building compression resistance, tensile resistance and torsion resistance, wherein a netlike anti-lacing wire is distributed in a special-shaped supporting layer 8, an armor layer 5 is armored by steel wires, a stranded multi-core conductor 1 is formed by regularly stranding a plurality of strands of copper wires with the same diameter in the same direction, an inner, middle and outer tensile structure of the cable is formed, and the tensile capacity of the cable can be effectively improved.
The special-shaped supporting layer 8 and the wrapping layer 6 and the elastic supporting tube 7 are in a certain gap, the elastic supporting tube 7 is of a hollow structure, the special-shaped supporting layer 8 is deformed by conducting external extrusion to the special-shaped supporting layer 8 through the protective layer 9, the elastic supporting tube 7 is deformed and flattened by the pressure of the special-shaped supporting layer 8, impact force is absorbed, a buffering effect is achieved, a wire core is protected, and the compression resistance of a cable is improved.
The elastic support tube 7 is distributed between the special-shaped support layer 8 and the arc-shaped bulge of the special-shaped support layer 8 in the middle of the wrapping layer 6, the special-shaped support layer 8 is connected with the wrapping layer 6 and is not connected with the wrapping layer 6, the elastic support tube 7, the special-shaped support layer 8 and the wrapping layer 6 are integrated when the special-shaped support layer is twisted by external force, when the external force is twisted to reach a set threshold value, the elastic support tube 7 and the special-shaped support layer 8 can rotate to a certain extent along with twisting due to lower friction force of the wrapping layer 6, so that the twisted state of a wire core is eliminated and slowed down, the long-term stress state of the wire core is eliminated and slowed down, the torsion resistance of the cable is improved, and the stability of long-term operation of the cable is kept.
The present utility model is not described in detail in the prior art, which is well known to those skilled in the art, and will not be described in detail.
Claims (10)
1. The utility model provides a torsion-resistant cable, includes sinle silk, functional layer, inoxidizing coating, the functional layer parcel the sinle silk, the inoxidizing coating parcel the functional layer, its characterized in that, the functional layer includes dysmorphism supporting layer, elasticity stay tube, armor and around the covering, dysmorphism supporting layer be provided with a plurality of with around the arc structure of covering contact, elasticity stay tube set up in adjacent between the arc structure, and with around the covering contacts, around the covering parcel in the armor outside, the armor shop in the sinle silk outside.
2. The torsion-resistant cable of claim 1, wherein the core comprises a stranded multi-core conductor, an inner shielding layer, a polypropylene insulation layer, and an outer shielding layer, the inner shielding layer being wrapped outside the stranded multi-core conductor, the polypropylene insulation layer being wrapped outside the inner shielding layer, and the outer shielding layer being wrapped outside the polypropylene insulation layer.
3. The torsion-resistant cable of claim 2 wherein the stranded multi-core conductor is a stranded plurality of copper wires of the same diameter stranded in the same direction.
4. A torsion cable according to claim 3, wherein the armour layer comprises steel wires.
5. The torsion-resistant cable of claim 4, wherein the flexible support tube is a hollow tube.
6. The torsion resistant cable of claim 5, wherein a plurality of the arcuate structures of the shaped support layer are symmetrically disposed.
7. The torsion-resistant cable of claim 6, wherein a plurality of the arcuate structures each contact an outer surface of the wrap.
8. The torsion resistant cable of claim 7 wherein said resilient support tube is disposed between a plurality of said arcuate structures.
9. The torsion-resistant cable of claim 8, wherein there are a plurality of said flexible support tubes, each of said plurality of flexible support tubes contacting an outer surface of said wrap.
10. The torsion resistant cable according to claim 9, wherein the arcuate structure is located inside the profiled support layer, the outer surfaces of the profiled support layer being surrounded by the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420454901.7U CN221899782U (en) | 2024-03-11 | 2024-03-11 | Torsion-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420454901.7U CN221899782U (en) | 2024-03-11 | 2024-03-11 | Torsion-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221899782U true CN221899782U (en) | 2024-10-25 |
Family
ID=93132344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420454901.7U Active CN221899782U (en) | 2024-03-11 | 2024-03-11 | Torsion-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221899782U (en) |
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- 2024-03-11 CN CN202420454901.7U patent/CN221899782U/en active Active
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