CN209912595U - Nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable - Google Patents
Nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable Download PDFInfo
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- CN209912595U CN209912595U CN201920714876.0U CN201920714876U CN209912595U CN 209912595 U CN209912595 U CN 209912595U CN 201920714876 U CN201920714876 U CN 201920714876U CN 209912595 U CN209912595 U CN 209912595U
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Abstract
The utility model provides an outdoor ultraviolet protection fire-retardant armor special cable of nylon sheath intermediate layer, its structure is: the copper conductor is externally extruded with an XLPE insulating layer to form a wire core; a plurality of wire cores are twisted to form a cable core, and non-hygroscopic filling materials are filled among the wire cores and are densely and roundly filled; a layer of polyester tape is wound outside the cable core, and a PVC inner sheath is extruded outside the polyester tape; the PVC inner sheath is a first PVC inner sheath, a nylon sheath and a second PVC inner sheath which are sequentially extruded from inside to outside; a galvanized steel wire armor layer is wrapped outside the second PVC inner sheath; wrapping a layer of non-woven fabric outside the galvanized steel wire armor layer; and a layer of ultraviolet-proof flame-retardant PVC outer sheath is extruded outside the non-woven fabric. The cable structure can achieve radial waterproof performance and excellent tensile performance of the cable, and can be applied to selective use in the environment with higher waterproof requirements such as railways, bridges, submarine tunnels and the like.
Description
Technical Field
The utility model relates to an outdoor ultraviolet protection fire-retardant armor special cable of nylon sheath intermediate layer is applicable to rated voltage 0.6/1 kV's power cable, belongs to cable technical field.
Background
With the continuous development of science and technology and society, the trend of the complicated cable use environment is continuously strengthened, and the diversification of the cable function needs to be continuously increased. In the fields of railways, bridges, locomotives and the like, special requirements such as water resistance, tensile strength and the like are required for cables. At present, the waterproof and tensile cable has no national standard or industrial standard and can not guide the design and production of the cable.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Satisfy ultraviolet protection, tensile, fire-retardant requirement to needs under outdoor environment, the utility model discloses the problem that the cable need be solved mainly has: the cable is mainly applied to traffic hubs, large-scale capital construction projects and the like to find a solution which simultaneously meets ultraviolet resistance, tensile resistance and flame retardance by combining the requirements of the existing industry and the harsh operation environment of practical cables.
Technical scheme adopted for solving the technical problems
The utility model provides an outdoor ultraviolet protection fire-retardant armor special cable of nylon sheath intermediate layer, its structure is:
a copper conductor is externally extruded with a crosslinked polyethylene XLPE insulating layer to form a wire core;
a plurality of wire cores are twisted to form a cable core, and non-hygroscopic filling materials are filled among the wire cores;
a layer of polyester tape is wound outside the cable core, and a PVC inner sheath is extruded outside the polyester tape;
the PVC inner sheath is a first PVC inner sheath, a nylon sheath and a second PVC inner sheath which are sequentially extruded from inside to outside;
a galvanized steel wire armor layer is wrapped outside the second PVC inner sheath; wrapping a layer of non-woven fabric outside the galvanized steel wire armor layer; and a layer of ultraviolet-proof flame-retardant PVC outer sheath is extruded outside the non-woven fabric.
The nominal diameter range of the galvanized steel wire is 1.25 mm-2.5 mm.
The wire core is 2-41 cores; the cross-sectional area of the copper conductor is 0.5mm2～6mm2。
The copper conductor is formed by twisting bare copper monofilaments, and the diameter range of the bare copper monofilaments is 0.32-1.04 mm; the twisting direction of the bare copper monofilament is the left direction.
The thinnest point thickness of the XLPE insulating layer is more than or equal to 90-0.1 mm of the nominal value; (assuming nominal value as d0Minimum thickness of not less than d0×90％-0.1mm)。
The polyester tape is provided with a nominal thickness of 0.04mm, and the lapping overlapping width is not less than 5 mm;
the nominal thickness of the non-woven fabric is 0.2mm, and the lapping and overlapping width is not less than 5 mm;
the thickness of the thinnest point of the outer sheath is more than or equal to 85-0.1 mm of the nominal value; (assuming nominal value as d0Minimum thickness of not less than d0×85％-0.1mm)。
The non-hygroscopic filling material is formed by a polypropylene reticular tearing film. Tightly filling in the middle of the cable core in the cabling process, and playing a role in improving the roundness of the cable and enhancing the waterproof performance.
The PVC material in the first PVC inner sheath and the second PVC inner sheath is an anti-ultraviolet PVC material which can resist the low temperature of minus 40 ℃ and the high temperature of 90 ℃.
Advantageous effects
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
(1) the cable structure has simple and reasonable design: a plurality of cables are circularly arranged and twisted to form the cable, which accords with the national standard and increases the roundness of the cable. And the procedure of multi-layer cabling of the cable is reduced, the processing procedure is simplified and easy to operate, and the production efficiency can be improved.
(2) The crosslinked polyethylene insulating layer crosslinked by warm water effectively improves the temperature resistance level and the physical and mechanical properties of the cable, so that the cable has higher mechanical safety in the use process.
(4) The inner sheath made of the three layers of PVC materials has good impact resistance, fatigue resistance and stability and does not crack while playing a waterproof role. And good wear resistance and self-lubricity. The flame retardant has good flame resistance, and only burns and decomposes at high temperature without firing.
(5) The galvanized steel wire armor is a mechanical protection layer of the cable, so that the mechanical strength of the cable can be increased, the anti-corrosion capability is improved, and the cable has excellent tensile property.
(6) The PVC outer sheath material is resistant to chemical corrosion and aging, and has good ultraviolet resistance, low temperature resistance of-40 ℃ and flame retardant property.
(7) The electrical performance of the cable meets the requirements under the condition that the functional structures meet the requirements of mechanical performance.
The utility model discloses the cable has used the water blocking material of novel environmental protection and specific structural parameter in order to reach the effect that improves waterproof, tensile strength simultaneously on the basis of new design cable shape structure to can be suitable for railway, bridge, locomotive field etc..
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: copper conductor 1, XLPE insulating layer 2, non-hygroscopicity filler material 3, polyester area 4, first PVC inner sheath 5, nylon sheath 6, second PVC inner sheath 7, zinc-plated steel wire armor 8, non-woven fabrics 9, fire-retardant PVC oversheath 10 of ultraviolet protection.
Detailed Description
As shown in fig. 1, the nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable of the embodiment has the following structure: the copper conductor is externally extruded with an XLPE insulating layer to form a wire core; a plurality of wire cores are twisted to form a cable core, and non-hygroscopic filling materials are filled among the wire cores and are densely and roundly filled; a layer of polyester tape is wound outside the cable core, and a PVC inner sheath is extruded outside the polyester tape; the PVC inner sheath is a first PVC inner sheath, a nylon sheath and a second PVC inner sheath which are sequentially extruded from inside to outside; a galvanized steel wire armor layer is wrapped outside the second PVC inner sheath; wrapping a layer of non-woven fabric outside the galvanized steel wire armor layer; and a layer of ultraviolet-proof flame-retardant PVC outer sheath is extruded outside the non-woven fabric.
The wire core of this example is 7 cores; the cross-sectional area of the copper conductor is 0.5mm2～6mm2. The nominal diameter range of the galvanized steel wire is 1.25 mm-2.5 mm.
The copper conductor is formed by twisting bare copper monofilaments, and the diameter range of the bare copper monofilaments is 0.32-1.04 mm; the twisting direction of the bare copper monofilament is the left direction.
The thinnest point thickness of the XLPE insulating layer is more than or equal to 90-0.1 mm of the nominal value;
the polyester tape is provided with a nominal thickness of 0.04mm, and the lapping overlapping width is not less than 5 mm;
the nominal thickness of the non-woven fabric is 0.2mm, and the lapping and overlapping width is not less than 5 mm;
the thickness of the thinnest point of the outer sheath is more than or equal to 85-0.1 mm of the nominal value.
The non-hygroscopic filling material is formed by a polypropylene reticular tearing film.
The PVC material in the first PVC inner sheath and the second PVC inner sheath is an anti-ultraviolet PVC material which can resist the low temperature of minus 40 ℃ and the high temperature of 90 ℃.
The PVC sheath is made of PVC material with temperature resistance level of H90 (temperature resistance of 90 ℃). The outer sheath is made of a material sold by shanghai sry science and technology limited under the trade name: HBZRH-90LT40FZW, model: PVC-H environment-friendly anti-cold (-40 ℃) ultraviolet-proof flame-retardant polyvinyl chloride sheath material with the temperature of 90 ℃.
Through the detection, the ultraviolet-proof, tensile, flame-retardant and waterproof performances of the cable product can meet the use requirements, and the electrical performance of the cable can reach the standard under the ultraviolet-proof, tensile, flame-retardant and waterproof integrated structure. The novel structure of the cable can achieve the radial waterproof performance and the excellent tensile performance of the cable, and can be applied to the selective use in the environments with higher waterproof requirements, such as railways, bridges, submarine tunnels and the like.
Claims (6)
1. The utility model provides an outdoor ultraviolet protection fire-retardant armor special cable of nylon sheath intermediate layer, characterized by structure is:
the copper conductor is externally extruded with an XLPE insulating layer to form a wire core;
a plurality of wire cores are twisted to form a cable core, and non-hygroscopic filling materials are filled among the wire cores;
a layer of polyester tape is wound outside the cable core, and a PVC inner sheath is extruded outside the polyester tape;
the PVC inner sheath is a first PVC inner sheath, a nylon sheath and a second PVC inner sheath which are sequentially extruded from inside to outside;
a galvanized steel wire armor layer is wrapped outside the second PVC inner sheath; wrapping a layer of non-woven fabric outside the galvanized steel wire armor layer; a layer of ultraviolet-proof flame-retardant PVC outer sheath is extruded outside the non-woven fabric;
the nominal diameter range of the galvanized steel wire is 1.25 mm-2.5 mm.
2. The nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable as claimed in claim 1, wherein the core is 2-41 cores; the cross-sectional area of the copper conductor is 0.5mm2～6mm2。
3. The special cable with the nylon sheath interlayer and the outdoor ultraviolet-proof flame-retardant armor as claimed in claim 1, wherein the copper conductor is formed by stranding bare copper monofilaments, and the diameter range of the bare copper monofilaments is 0.32 mm-1.04 mm; the twisting direction of the bare copper monofilament is the left direction.
4. The nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable as claimed in claim 3, wherein the thinnest point thickness of the XLPE insulating layer is greater than or equal to 90-0.1 mm of the nominal value;
the polyester tape is provided with a nominal thickness of 0.04mm, and the lapping overlapping width is not less than 5 mm;
the nominal thickness of the non-woven fabric is 0.2mm, and the lapping and overlapping width is not less than 5 mm;
the thickness of the thinnest point of the outer sheath is more than or equal to 85-0.1 mm of the nominal value.
5. The nylon sheathed interlayer outdoor ultraviolet-proof flame-retardant armored special cable as claimed in claim 1, wherein the non-hygroscopic filling material is formed by polypropylene mesh tearing film.
6. The special cable with the nylon sheath interlayer and the outdoor ultraviolet-proof flame-retardant armored material as claimed in claim 1, wherein the PVC material in the first PVC inner sheath and the second PVC inner sheath is ultraviolet-proof PVC material resistant to low temperature of-40 ℃ and high temperature of 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920714876.0U CN209912595U (en) | 2019-05-19 | 2019-05-19 | Nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920714876.0U CN209912595U (en) | 2019-05-19 | 2019-05-19 | Nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable |
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| Publication Number | Publication Date |
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| CN209912595U true CN209912595U (en) | 2020-01-07 |
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| CN201920714876.0U Active CN209912595U (en) | 2019-05-19 | 2019-05-19 | Nylon sheath interlayer outdoor ultraviolet-proof flame-retardant armored special cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864142A (en) * | 2022-06-21 | 2022-08-05 | 远东电缆有限公司 | Self-bearing cable and production process thereof |
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2019
- 2019-05-19 CN CN201920714876.0U patent/CN209912595U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864142A (en) * | 2022-06-21 | 2022-08-05 | 远东电缆有限公司 | Self-bearing cable and production process thereof |
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