CN219738558U - Long-life irradiation double-sheath cable - Google Patents
Long-life irradiation double-sheath cable Download PDFInfo
- Publication number
- CN219738558U CN219738558U CN202320973856.1U CN202320973856U CN219738558U CN 219738558 U CN219738558 U CN 219738558U CN 202320973856 U CN202320973856 U CN 202320973856U CN 219738558 U CN219738558 U CN 219738558U
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- Prior art keywords
- sheath
- cable
- insulating layer
- utility
- model
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- 239000004020 conductor Substances 0.000 claims abstract description 9
- 239000003063 flame retardant Substances 0.000 claims abstract description 8
- 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 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 4
- 239000011147 inorganic material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 22
- 229920000098 polyolefin Polymers 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 7
- 238000004132 cross linking Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a long-life irradiation double-sheath cable in the field of cables, which comprises a plurality of core wires, wherein two adjacent core wires are tangent and are coated by a sheath to form a cable core with an annular section, a filling part is arranged corresponding to an inner gap of the cable core, the filling part is made of inorganic materials, the core wires comprise conductors and insulating layers, the insulating layers comprise inner insulating layers and outer insulating layers, and the sheath comprises an inner sheath and an outer sheath. The utility model can meet the insulation resistance requirement and has good ageing and flame retardant properties, and the service life of the utility model is more than 70 years under the corresponding normal environment.
Description
Technical Field
The utility model belongs to the technical field of cables, and particularly relates to a long-service-life irradiation double-sheath cable.
Background
The service life of the common civil buildings, tunnels, bridges and other buildings is 70 years or longer, the cables laid in the buildings should have basically equivalent service life, and the cables can not age in the whole service life period, so that the cost of replacing the cables in the middle period is avoided, and the safety of power supply of the buildings in the whole service life period is ensured.
In the prior art, the common PVC insulated and sheathed cable has the service life of about 20 years, and has the defects that: the cable cannot be satisfied with the service life of at least 70 years, and the maintenance cost is increased; if overload or extreme climatic conditions exist in the use, the service life is shorter, potential safety hazards can appear after the service life reaches a certain period, toxic and harmful gases and smoke can be generated during combustion, and the safety and property of human bodies are greatly threatened.
Disclosure of Invention
The utility model aims to provide a long-life irradiation double-sheath cable, which can prolong the service life of the cable.
The purpose of the utility model is realized in the following way: the utility model provides a two sheath cables of long-life irradiation, includes a plurality of heart yearns, adjacent two the heart yearn is tangent and by the sheath cladding form the cable core that the cross-section is annular, correspond the inside space of cable core is provided with the filling part, the filling part adopts inorganic material, the heart yearn includes conductor and insulating layer, the insulating layer includes interior insulating layer and outer insulating layer, the sheath includes inner sheath and oversheath.
After adopting the structure, compared with the prior art, the utility model has the beneficial effects that: the insulating layer adopts a double-layer structure, meets the requirement of insulation resistance, and has good ageing and flame retardant properties; the cable adopts a double-sheath structure, so that the ageing resistance and the wear resistance are improved, and the cable has the characteristics of fire resistance and water resistance; the whole cable can meet 5000H ageing test requirements, and the service life of the cable in a normal environment is more than 70 years.
As a further improvement of the utility model, the conductor is made of a plurality of oxygen-free copper wires which are twisted in a compounding way.
As a further improvement of the utility model, the inner insulating layer is made of polyethylene material, and the outer insulating layer is made of irradiation cross-linked flame retardant polyolefin material.
As a further improvement of the utility model, the inner sheath and the outer sheath are made of irradiation crosslinking low-smoke halogen-free polyolefin materials.
As a further improvement of the utility model, the PH value of the material of the insulating layer and the sheath is more than 6, and the conductivity is less than 5 mu S/mm.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The cable comprises a 1 core wire, a 2 filling part, a 3 conductor, a 4 inner insulating layer, a 5 outer insulating layer, a 6 inner sheath and a 7 outer sheath.
Description of the embodiments
As shown in fig. 1, the irradiation double-sheath cable with long service life comprises a plurality of core wires 1, wherein two adjacent core wires 1 are tangent and are coated by a sheath to form a cable core with an annular section, a filling part 2 is arranged in a gap corresponding to the cable core, and the filling part 2 is made of inorganic materials; the core wire 1 includes a conductor 3 and an insulating layer; preferably, the conductor 3 is made of a plurality of strands of oxygen-free copper wires in a composite twisting way, so that the softness of the conductor 3 can be improved, and the bending radius of the manufactured flexible cable is smaller; the insulating layer comprises an inner insulating layer 4 and an outer insulating layer 5, wherein the inner insulating layer 4 is made of polyethylene materials, and the outer insulating layer 5 is made of irradiation crosslinking flame-retardant polyolefin materials; the sheath comprises an inner sheath 6 and an outer sheath 7, wherein the inner sheath 6 and the outer sheath 7 are produced by adopting irradiation crosslinking low-smoke halogen-free polyolefin materials through an extrusion process, and preferably, the PH value of the materials of the insulating layer and the sheath is more than 6, and the conductivity is less than 5 mu S/mm.
When the cable is used, the double-layer composite insulating layer is adopted, the inner layer material is a polyethylene material, the material has good insulating property and corrosion resistance, does not contain harmful components to human bodies, and the outer layer material is an irradiation crosslinking flame-retardant polyolefin material, so that the material has high temperature resistance level and high aging temperature, the service life of the cable in the use process of cyclic heating can be prolonged, and the two materials are co-extruded at one time, so that the insulation has good insulating electrical property, and the insulating flame-retardant fire resistance is greatly improved; the sheath adopts irradiation crosslinking low-smoke halogen-free high-flame-retardant polyolefin material, so that the environmental pollution is reduced, the fire resistance of the cable is improved, and the service life of the cable is prolonged. The utility model has the advantages that: the cable ensures that the service life of the cable reaches more than 70 years on the premise of not reducing the insulation resistance by improving the waterproof and ageing-resistant performances of the insulation and sheath structure; the cable can be applied to the laying occasions such as cable wells, bridge frames, penetrating pipes, direct burial and the like, and the minimum bending radius is 6D (D=cable diameter); the halogen-free insulating and sheath material is adopted, the ageing resistance and hydrolysis resistance of the material are improved in an irradiation crosslinking mode, and the whole cable has the characteristics of low smoke, no halogen, flame retardance and low toxicity.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (5)
1. The utility model provides a two sheath cables of long-life irradiation, includes a plurality of heart yearns, its characterized in that, adjacent two the heart yearn is tangent and by the sheath cladding form the cable core that the cross-section is annular, correspond the inside space of cable core is provided with the filling part, the filling part adopts inorganic material, the heart yearn includes conductor and insulating layer, the insulating layer includes inner insulating layer and outer insulating layer, the sheath includes inner sheath and oversheath.
2. The long life irradiated double-jacketed cable of claim 1, wherein said conductor is made from a composite lay of a plurality of oxygen-free copper wires.
3. The long life irradiated double-jacketed cable of claim 1, wherein said inner insulation layer is of polyethylene material and said outer insulation layer is of irradiation crosslinked flame retardant polyolefin material.
4. The long life irradiated double-jacketed cable of claim 1 wherein the inner and outer jackets are both made of irradiation crosslinked low smoke halogen free polyolefin material.
5. The long life irradiated double-jacketed cable of claim 1 wherein the insulating layer and jacket materials have a PH greater than 6 and a conductivity less than 5 μs/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320973856.1U CN219738558U (en) | 2023-04-26 | 2023-04-26 | Long-life irradiation double-sheath cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320973856.1U CN219738558U (en) | 2023-04-26 | 2023-04-26 | Long-life irradiation double-sheath cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738558U true CN219738558U (en) | 2023-09-22 |
Family
ID=88061488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320973856.1U Active CN219738558U (en) | 2023-04-26 | 2023-04-26 | Long-life irradiation double-sheath cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738558U (en) |
-
2023
- 2023-04-26 CN CN202320973856.1U patent/CN219738558U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |