CN205751680U - A kind of crosslinked polyetylene insulated multicore flame retardant cable - Google Patents
A kind of crosslinked polyetylene insulated multicore flame retardant cable Download PDFInfo
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- CN205751680U CN205751680U CN201620470451.6U CN201620470451U CN205751680U CN 205751680 U CN205751680 U CN 205751680U CN 201620470451 U CN201620470451 U CN 201620470451U CN 205751680 U CN205751680 U CN 205751680U
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Abstract
The one crosslinked polyetylene insulated multicore flame retardant cable that the utility model discloses, including cable core, is provided with inorganic mineral oxygen barrier layer in the gap of cable core；At outer wrapped first polyester belt of cable core, extruding semiconductive shielding layer, be externally provided with steel-tape armouring layer at inner semiconductor layer, extrude rock wool thermal insulation layer outside steel-tape armouring layer outside polyester belt, the outermost layer at cable is provided with silica gel fireproof covering；By a ground wire and with ground wire for axle center, symmetrically arranged two insulated wire cores form described cable core in " one " font is stranded；It is symmetrical arranged one group of through hole with ground wire for axle center in cable core.This utility model has the advantage such as good flame resistance, high temperature resistant, thermal diffusivity good, fire-resistant, good insulation preformance.
Description
Technical field
This utility model relates to power cable field, refers in particular to a kind of crosslinked polyetylene insulated multicore flame retardant cable.
Background technology
Cross-linked polyethylene insulated cable significantly improves the performance of polyvinyl chloride cable.The long-term of cross-linked polyethylene insulated cable allows operating temperature up to 90 DEG C.?
To keep elastic stage at a temperature of 130 DEG C.Cross-linked polyethylene insulated cable weight/power ratio is light, and diameter is little, and mounting and installation is convenient, and attachment tab is simple, and is used widely.But power cable with cross-linked polyethylene insulation is the most easily etched or mechanically damaged, is baited by mouse or by the moth erosion of worm ant, thus affect the transmission of its electric power；And major part electric wire can produce substantial amounts of severe toxicity dense smoke when burning, cause great Loss of Life and property, and bring the biggest difficulty to rescue work, particularly at the environment of space relative closure, during as the environment such as indoor, tunnel use, hidden danger can be brought to Environmental security.It is thus desirable to its structure is improved, to increase its tensile strength, comprcssive strength, increase the service life, low smoke and zero halogen during burning, expand its range further.
Further, existing cable is in laying, and in the case of being easily extruded and oppressing, easily break core so that the electric property of cable is substantially reduced.
Utility model content
Technical problem to be solved in the utility model there is provided a kind of there is good flame resistance, high temperature resistant, thermal diffusivity good, fire-resistant, the crosslinked polyetylene insulated multicore flame retardant cable of good insulation preformance.
One described in the utility model crosslinked polyetylene insulated multicore flame retardant cable, including cable core, is provided with inorganic mineral oxygen barrier layer in the gap of cable core；At the first polyester belt that the outer wrapped thickness of cable core is 1-2cm, the inner semiconductor layer that thickness is 2-4mm is extruded outside polyester belt, it is externally provided with the steel-tape armouring layer that thickness is 3-6mm at inner semiconductor layer, extruding the out semiconductor layer that thickness is 2-4mm outside steel-tape armouring layer, the outermost layer at cable is provided with silica gel fireproof covering；By a ground wire and with ground wire for axle center, symmetrically arranged two insulated wire cores form described cable core in " one " font is stranded；It is symmetrical arranged one group of through hole with ground wire for axle center in cable core.
Improving further, described ground wire is made up of gnd conductor and the thickness is 2-4mm first crosslinked polyetylene insulated layer of being extruded in outside gnd conductor.
Improve further, the thickness is 2-4mm second crosslinked polyetylene insulated layer that described insulated wire cores by aluminium alloy conductor, is extruded in outside aluminium alloy conductor and constituting around the second polyester belt that thickness is 2-3cm wrapping in outside the second crosslinked polyetylene insulated layer.
Improving further, the diameter of described gnd conductor is 2.5 times of aluminium alloy conductor diameter.
The beneficial effects of the utility model are:
1, cable core of the present utility model is provided with one group of through hole, is possible not only to heat radiation, it is also possible to anti-extrusion, cable core is squeezed when, through hole can alleviate the space of extruding；
2, inorganic mineral oxygen barrier layer is filled in this utility model cable core, can be with blocking oxygen, good flame retardation effect, preferably protect core；
3, cable is additionally provided with rock wool thermal insulation layer so that the adiabatic heat-proof quality of cable is good, and under normal temperature condition, the thermal conductivity of (about 25 DEG C) is generally between 0.03～0.047W/ (moK)；
4, insulated wire cores outermost layer of the present utility model is cased with silica gel fireproof casing so that cable has resistance to elevated temperatures, thermal and insulating performance, fire resistance, electrical insulation capability, chemical stability, weather-resistant performance, cold-resistant, fire-resistant, oil resistant, resistance to ozone, proof voltage, resistance to electric arc, corona-resistance property etc., particularly safety and environmental protection performance, is the optimal substitute products of the hazardness goods such as asbestos；After sulfuration can in-260 ° of C temperature ranges of-65 ° of C life-time service keep its resilient flexible performance；
5, each layer of this utility model setting further to thickness, matches in " one " font structure with each core so that the rounding property of cable is more preferable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As it is shown in figure 1, one described in the utility model crosslinked polyetylene insulated multicore flame retardant cable, including cable core, by a ground wire and with ground wire for axle center, symmetrically arranged two insulated wire cores form described cable core in " one " font is stranded；Wherein, described ground wire is made up of gnd conductor 1 and the thickness is 2-4mm first crosslinked polyetylene insulated layer 2 of being extruded in outside gnd conductor；The thickness is 2-4mm second crosslinked polyetylene insulated layer 4 that described insulated wire cores by aluminium alloy conductor 3, is extruded in outside aluminium alloy conductor and constituting around the second polyester belt 5 that thickness is 2-3cm wrapping in outside the second crosslinked polyetylene insulated layer；And the diameter of gnd conductor is 2.5 times of aluminium alloy conductor diameter.
It is provided with inorganic mineral oxygen barrier layer 6 in the gap of cable core；At the first polyester belt 7 that the outer wrapped thickness of cable core is 1-2cm, the semiconductive shielding layer 8 that thickness is 2-4mm is extruded outside polyester belt, it is externally provided with the steel-tape armouring layer 9 that thickness is 3-6mm at inner semiconductor layer, extruding the rock wool thermal insulation layer 10 that thickness is 2-4mm outside steel-tape armouring layer, the outermost layer at cable is provided with silica gel fireproof covering 11.
Thermal diffusivity and anti-extrusion in order to make cable are more preferable so that the core in cable is difficult to be destroyed, and are symmetrical arranged one group of through hole 12 in cable core with ground wire for axle center.
This utility model provides a kind of thinking and the method for crosslinked polyetylene insulated multicore flame retardant cable; the method and the approach that implement this technical scheme are a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.Each component part the clearest and the most definite in the present embodiment all can use prior art to be realized.
Claims (4)
1. a crosslinked polyetylene insulated multicore flame retardant cable, it is characterised in that: include cable core, be provided with inorganic mineral oxygen barrier layer in the gap of cable core；At the first polyester belt that the outer wrapped thickness of cable core is 1-2cm, the semiconductive shielding layer that thickness is 2-4mm is extruded outside polyester belt, it is externally provided with the steel-tape armouring layer that thickness is 3-6mm at inner semiconductor layer, extruding the rock wool thermal insulation layer that thickness is 2-4mm outside steel-tape armouring layer, the outermost layer at cable is provided with silica gel fireproof covering；By a ground wire and with ground wire for axle center, symmetrically arranged two insulated wire cores form described cable core in " one " font is stranded；It is symmetrical arranged one group of through hole with ground wire for axle center in cable core.
Crosslinked polyetylene insulated multicore flame retardant cable the most according to claim 1, it is characterised in that: described ground wire is made up of gnd conductor and the thickness is 2-4mm first crosslinked polyetylene insulated layer of being extruded in outside gnd conductor.
Crosslinked polyetylene insulated multicore flame retardant cable the most according to claim 1, it is characterised in that: the thickness is 2-4mm second crosslinked polyetylene insulated layer that described insulated wire cores by aluminium alloy conductor, is extruded in outside aluminium alloy conductor and constituting around the second polyester belt that thickness is 2-3cm wrapping in outside the second crosslinked polyetylene insulated layer.
Crosslinked polyetylene insulated multicore flame retardant cable the most according to claim 2, it is characterised in that: the diameter of described gnd conductor is 2.5 times of aluminium alloy conductor diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620470451.6U CN205751680U (en) | 2016-05-23 | 2016-05-23 | A kind of crosslinked polyetylene insulated multicore flame retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620470451.6U CN205751680U (en) | 2016-05-23 | 2016-05-23 | A kind of crosslinked polyetylene insulated multicore flame retardant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205751680U true CN205751680U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620470451.6U Active CN205751680U (en) | 2016-05-23 | 2016-05-23 | A kind of crosslinked polyetylene insulated multicore flame retardant cable |
Country Status (1)
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| CN (1) | CN205751680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913959A (en) * | 2016-05-23 | 2016-08-31 | 无锡市新阳光电缆有限公司 | Crosslinked polyethylene insulated multi-core flame retardant cable |
| RU2763426C1 (en) * | 2021-03-03 | 2021-12-29 | Общество С Ограниченной Ответственностью "Атоминпром" | Fire-resistant casing for metal threaded stud |
-
2016
- 2016-05-23 CN CN201620470451.6U patent/CN205751680U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913959A (en) * | 2016-05-23 | 2016-08-31 | 无锡市新阳光电缆有限公司 | Crosslinked polyethylene insulated multi-core flame retardant cable |
| RU2763426C1 (en) * | 2021-03-03 | 2021-12-29 | Общество С Ограниченной Ответственностью "Атоминпром" | Fire-resistant casing for metal threaded stud |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |