CN211265006U - Bending-resistant middle-low voltage single-core cable - Google Patents
Bending-resistant middle-low voltage single-core cable Download PDFInfo
- Publication number
- CN211265006U CN211265006U CN202020190363.7U CN202020190363U CN211265006U CN 211265006 U CN211265006 U CN 211265006U CN 202020190363 U CN202020190363 U CN 202020190363U CN 211265006 U CN211265006 U CN 211265006U
- Authority
- CN
- China
- Prior art keywords
- layer
- core cable
- low voltage
- inner conductor
- single core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005452 bending Methods 0.000 title claims abstract description 5
- 239000004020 conductor Substances 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 229920000098 polyolefin Polymers 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims abstract description 6
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 5
- 150000002367 halogens Chemical class 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 6
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a single core cable of low pressure in resistant bending type, include the inner conductor and in proper order the cladding is in the outside EVA insulating layer of inner conductor, water blocking layer, high temperature glass fiber tape around the covering, separate oxygen layer, reflecting layer, metallic shield and low smoke and zero halogen polyolefin sheath, the inner conductor comprises a plurality of strand concentric compound twists, the strand comprises a plurality of tinned copper monofilament bundles twists, tinned copper monofilament diameter is no more than 0.45mm, the inner conductor external diameter is 24mm to 30 mm. The cable has good flexibility, excellent flexibility resistance and excellent electrical characteristics on the basis of ensuring the mechanical strength.
Description
Technical Field
The utility model relates to a wire and cable technical field especially relates to a low pressure single core cable in resistant flexible type.
Background
The electric wire and cable is an electrical product for transmitting electric energy, transmitting signals and realizing electromagnetic energy conversion. With the rapid development of society and the continuous progress of science and technology, the varieties of wires and cables are more and more. Power cables are wire products used in the trunk lines of power systems to transmit and distribute high power electrical energy. Including 1-500KV and above various voltage grades and various insulated power cables. Such as polyvinyl chloride insulated power cables, cross-linked polyethylene power cables, and the like. However, if the cable outer diameter is made too large, the problem of poor flexure resistance is likely to occur, and the difficulty of wiring installation work is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a low pressure single core cable in resistant flexible type, on the basis of guaranteeing mechanical strength, the pliability is good, has excellent resistant flexible nature and electrical characteristic concurrently.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The deflection-resistant medium-low voltage single-core cable comprises an inner conductor, and an EVA (ethylene vinyl acetate) insulating layer, a water-blocking layer, a high-temperature glass fiber tape wrapping layer, an oxygen-isolating layer, a reflecting layer, a metal shielding layer and a low-smoke halogen-free polyolefin sheath which are sequentially wrapped outside the inner conductor, wherein the inner conductor is formed by concentrically twisting a plurality of strands, the strands are formed by twisting a plurality of tinned copper monofilament bundles, the diameter of each tinned copper monofilament is not more than 0.45mm, and the outer diameter of the inner conductor is 24mm to 30 mm.
Preferably, the thickness of the EVA insulating layer is 1mm to 3 mm.
Preferably, the water-blocking layer is a layer of LDPE, HDPE or LLDPE resin.
Preferably, the saturated water absorption of the water-blocking layer is less than 0.5%.
Preferably, the high-temperature glass fiber tape wrapping layer is of a double-layer wrapping structure.
Preferably, the oxygen isolation layer is formed by extruding ceramic silicon rubber oxygen isolation materials.
Preferably, the reflecting layer is an aluminum foil adhesive tape wrapping structure.
Preferably, the metal shielding layer is formed by spirally winding and weaving double-layer tin-plated copper monofilaments.
Preferably, the diameter of the double-layer tin-plated copper monofilament is not more than 0.05 mm.
The utility model has the advantages that:
1. the diameter of the tin-plated copper monofilament stranded to form the inner conductor is not more than 0.45mm, so that the flexibility and the flexing resistance of the inner conductor are improved, the stranded wires are formed by bundle stranding and have excellent flexing resistance, and the looseness easily generated when the stranded wires are stranded can be reduced by concentrically stranding a plurality of the stranded wires, so that the inner conductor has excellent flexing resistance and electrical characteristics.
2. The outside cladding of inner conductor has high temperature glass fiber tape around the covering, separates oxygen layer, reflection stratum, low smoke and zero halogen polyolefin sheath, forms the multilayer fire prevention and thermal-insulated effect, and the time of extension heat-conduction to inner conductor reduces the inside temperature of cable, improves the fail safe nature of cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
Reference numerals: 1-inner conductor, 2-EVA insulating layer, 3-water-resistant layer, 4-high temperature glass fiber tape wrapping layer, 5-oxygen isolation layer, 6-reflecting layer, 7-metal shielding layer and 8-low smoke zero halogen polyolefin sheath.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a low voltage single core cable in resistant bending type, including inner conductor 1 and cladding in proper order the EVA insulating layer 2 of inner conductor 1 outside, water blocking layer 3, high temperature glass fiber tape around covering 4, separate oxygen layer 5, reflection stratum 6, metallic shield 7 and low smoke and zero halogen polyolefin sheath 8. The inner conductor 1 is formed by concentrically twisting a plurality of folded yarns, the folded yarns are formed by bundling and twisting a plurality of tinned copper monofilaments, the diameter of each tinned copper monofilament is not more than 0.45mm, and the outer diameter of the inner conductor 1 is 24mm to 30 mm.
Specifically, the thickness of the EVA insulating layer 2 is 1mm to 3 mm. The water-resistant layer 3 is an LDPE, HDPE or LLDPE resin layer, and further, the saturated water absorption of the water-resistant layer 3 is less than 0.5%. The high-temperature glass fiber tape wrapping layer 4 is of a double-layer wrapping structure. The oxygen isolation layer 5 is formed by extruding ceramic silicon rubber oxygen isolation materials. The reflecting layer 6 is of an aluminum foil adhesive tape wrapping structure. The metal shielding layer 7 is formed by spirally winding and weaving double-layer tin-plated copper monofilaments, and further the diameter of each double-layer tin-plated copper monofilament is not more than 0.05 mm.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. Resistant low voltage single core cable in bending type, characterized by: including inner conductor (1) and cladding in proper order the outside EVA insulating layer (2), water-blocking layer (3), high temperature glass fiber tape of inner conductor (1) are around covering (4), separate oxygen layer (5), reflection stratum (6), metallic shield (7) and low smoke and zero halogen polyolefin sheath (8), inner conductor (1) is twisted repeatedly by a plurality of strand concentricity and is constituted, the strand comprises a plurality of tin-plated copper monofilament bundles, tin-plated copper monofilament diameter is no more than 0.45mm, inner conductor (1) external diameter is 24mm to 30 mm.
2. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the thickness of the EVA insulating layer (2) is 1mm to 3 mm.
3. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the water-resistant layer (3) is an LDPE, HDPE or LLDPE resin layer.
4. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the saturated water absorption of the water resisting layer (3) is less than 0.5 percent.
5. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the high-temperature glass fiber tape wrapping layer (4) is of a double-layer wrapping structure.
6. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the oxygen isolation layer (5) is formed by extruding ceramic silicon rubber oxygen isolation materials.
7. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the reflecting layer (6) is of an aluminum foil adhesive tape wrapping structure.
8. The flex-resistant medium and low voltage single core cable according to claim 1, wherein: the metal shielding layer (7) is formed by spirally winding and weaving double-layer tin-plated copper monofilaments.
9. The flex-resistant medium and low voltage single core cable according to claim 8, wherein: the diameter of the double-layer tin-plated copper monofilament is not more than 0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020190363.7U CN211265006U (en) | 2020-02-20 | 2020-02-20 | Bending-resistant middle-low voltage single-core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020190363.7U CN211265006U (en) | 2020-02-20 | 2020-02-20 | Bending-resistant middle-low voltage single-core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265006U true CN211265006U (en) | 2020-08-14 |
Family
ID=71959124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020190363.7U Expired - Fee Related CN211265006U (en) | 2020-02-20 | 2020-02-20 | Bending-resistant middle-low voltage single-core cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211265006U (en) |
-
2020
- 2020-02-20 CN CN202020190363.7U patent/CN211265006U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 |