CN219246421U - Low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable - Google Patents
Low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable Download PDFInfo
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- CN219246421U CN219246421U CN202222570348.7U CN202222570348U CN219246421U CN 219246421 U CN219246421 U CN 219246421U CN 202222570348 U CN202222570348 U CN 202222570348U CN 219246421 U CN219246421 U CN 219246421U
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Abstract
A low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable comprises a cable core and an outer sheath outside the cable core, wherein the cable core is formed by twisting a plurality of cable cores. Filling is carried out between adjacent cable cores; the cable core and the outer sheath are sequentially and closely provided with a first wrapping layer, a metal total shielding layer, an inner sheath and a second wrapping layer from inside to outside; the wire core is formed by wrapping an insulating layer on a conductor; the conductor is formed by twisting metal monofilaments; the insulating layer is made of crosslinked polyethylene insulating material; the filler is a non-hygroscopic filler material; the first wrapping layer is formed by overlapping and wrapping an environment-friendly double-sided insulating water-blocking tape; the metal total shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt; the inner sheath is made of low-toxicity environment-friendly halogen-free low-smoke polyolefin sheath material; the second wrapping layer is formed by overlapping and wrapping an environment-friendly halogen-free low-smoke flame-retardant belt; the outer sheath is made of low-toxicity environment-friendly high-flame-retardant halogen-free low-smoke polyolefin sheath material. The cable has the advantages of meeting the requirements of anti-interference and waterproof performances, and simultaneously having low toxicity and environmental protection.
Description
Technical Field
The utility model relates to a low-toxicity environment-friendly anti-interference low-voltage waterproof cable with rated voltage of 0.6/1kV, and belongs to the technical field of cables.
Background
In the prior art, a 0.6/1kV rated voltage cable is used for conveying electric energy or signals (carrier communication), and the cable is mainly applied to buildings. The characteristics of the building itself require that the cable has better waterproof performance in addition to basic functions, and meanwhile, because the cable can be used for carrier communication, the cable has higher requirements on interference resistance. In the building scene, personnel are more intensive, and the toxicity and environmental friendliness of the cable are also required. Meeting these requirements requires the design of the cable to be compatible with a number of factors, with high difficulty.
The technical problems to be solved are as follows:
aiming at the functional and performance requirements of the low-toxicity environment-friendly anti-interference low-voltage waterproof cable, the cable disclosed by the utility model mainly solves the problems that: the requirements of the low-toxicity environment-friendly anti-interference low-voltage waterproof cable are defined by combining the existing GB/T12706, GB/T19666 and industry requirements, and the cable is designed on the basis of meeting the electrical performance and mechanical performance of the cable and simultaneously with the performances of interference resistance, water resistance, low toxicity, environment friendliness and the like.
Disclosure of Invention
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable, includes cable core and cable core outer sheath, the cable core is stranded into the cable by many sinle silk.
The cable-forming twisting pitch diameter ratio of the cable core is 30-40 times; filling is carried out between adjacent cable cores;
the cable core and the outer sheath are sequentially and closely provided with a first wrapping layer, a metal total shielding layer, an inner sheath and a second wrapping layer from inside to outside;
the wire core is formed by wrapping an insulating layer outside a conductor; the cross-sectional area of the conductor was 1.5mm 2 ～400mm 2 The conductor is formed by twisting metal monofilaments, and the twisting pitch diameter ratio range is 10-25 times; the insulating layer is made of crosslinked polyethylene insulating material, and the thickness of the insulating layer is 0.7-2.0 mm;
the filling is a non-hygroscopic filling material;
the first wrapping layer is formed by overlapping and wrapping an environment-friendly double-sided insulating water-blocking tape, and the wrapping lap rate is not less than 15%;
the metal total shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt;
the inner sheath is composed of low-toxicity environment-friendly halogen-free low-smoke polyolefin sheath material, the nominal thickness of the inner sheath is 1.0-1.8 mm, and the thinnest thickness of the inner sheath is not less than 80-0.2 mm of the nominal thickness;
the second wrapping layer is formed by overlapping and wrapping an environment-friendly halogen-free low-smoke flame-retardant belt, and the wrapping coverage rate is not less than 15%;
the outer sheath is composed of low-toxicity environment-friendly high-flame-retardant halogen-free low-smoke polyolefin sheath material, the nominal thickness of the outer sheath is 1.4 mm-3.1 mm, and the thinnest thickness of the outer sheath is not less than 80% -0.2mm of the nominal thickness.
Further: the conductor is formed by twisting a single metal monofilament or a plurality of metal monofilaments; the metal monofilament is a bare copper monofilament; the diameter of the metal monofilament is 0.52 mm-2.92 mm; the diameter of the conductor is 1.36 mm-23.3 mm; the twisting direction of the metal monofilaments is left.
Preferably: the non-hygroscopic filling material is an environment-friendly glass fiber filling rope.
Advantageous effects
After the technical scheme is adopted, the utility model has the following beneficial effects:
(1) The cable structural design is simple and reasonable: the longitudinal wrapping aluminum-plastic composite belt has the anti-interference effect while meeting the requirement of longitudinal waterproof.
(2) The environment-friendly double-sided insulating water blocking tape is wrapped outside the cable core, and meanwhile, the low-toxicity environment-friendly halogen-free low-smoke polyolefin sheath material is extruded, so that the radial waterproof performance of the cable is effectively improved.
(3) The cable disclosed by the utility model is designed into a novel shape structure on the basis of using high-quality low-toxicity environment-friendly materials, so that the cable has low-toxicity environment-friendly performance while meeting the requirements of anti-interference and waterproof performances.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
In the figure: conductor 1, insulating layer 2, filling 3, first around covering 4, metal total shielding 5, inner sheath 6, second around covering 7, outer sheath 8.
Description of the embodiments
The present utility model will be further described with reference to the accompanying drawings and detailed description below:
referring to fig. 1, a low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable comprises a cable core and an outer sheath outside the cable core, wherein the cable core is formed by twisting a plurality of cable cores.
The cable-forming twisting pitch diameter ratio of the cable core is 30-40 times; filling is carried out between adjacent cable cores;
the cable core and the outer sheath are sequentially and closely provided with a first wrapping layer, a metal total shielding layer, an inner sheath and a second wrapping layer from inside to outside;
the wire core is formed by wrapping an insulating layer outside a conductor; the cross-sectional area of the conductor was 1.5mm 2 ～400mm 2 The conductor is formed by twisting metal monofilaments, and the twisting pitch diameter ratio range is 10-25 times; the insulating layer is made of crosslinked polyethylene insulating material, and the thickness of the insulating layer is 0.7-2.0 mm;
the filling is a non-hygroscopic filling material;
the first wrapping layer is formed by overlapping and wrapping an environment-friendly double-sided insulating water-blocking tape, and the wrapping lap rate is not less than 15%;
the metal total shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt;
the inner sheath is composed of low-toxicity environment-friendly halogen-free low-smoke polyolefin sheath material, the nominal thickness of the inner sheath is 1.0-1.8 mm, and the thinnest thickness of the inner sheath is not less than 80-0.2 mm of the nominal thickness;
the second wrapping layer is formed by overlapping and wrapping an environment-friendly halogen-free low-smoke flame-retardant belt, and the wrapping coverage rate is not less than 15%;
the outer sheath is composed of low-toxicity environment-friendly high-flame-retardant halogen-free low-smoke polyolefin sheath material, the nominal thickness of the outer sheath is 1.4 mm-3.1 mm, and the thinnest thickness of the outer sheath is not less than 80% -0.2mm of the nominal thickness.
In order to improve the mechanical performance of the cable, the conductor is formed by single metal monofilament or stranded by a plurality of metal monofilaments; the metal monofilament is a bare copper monofilament; the diameter range of the metal monofilament is 0.52 mm-2.92 mm; the diameter range of the conductor is 1.36 mm-23.3 mm; the twisting direction of the metal monofilaments is left.
The non-hygroscopic filling material is an environment-friendly glass fiber filling rope.
In this example, a three-core cable is taken as an example. In the cable of this example, the cross-sectional area of the conductor in the single core is 70mm 2 The conductor was formed by twisting bare copper filaments having a diameter of 2.21mm, and the ratio of the twisting pitch was 12 times. The cable-forming pitch diameter ratio of the cable is 30 times;
the nominal thickness of the first wrapping layer environment-friendly double-sided insulating water-blocking tape is 0.35mm, and the cable core is guaranteed to be round and compact.
The nominal thickness of the aluminum-plastic composite belt of the metal total shielding layer is 0.25mm, and the aluminum-plastic composite belt has a shielding effect and also has longitudinal waterproof performance.
The thickness of the inner sheath was 1.2mm. The model/brand of the sheath material of the inner sheath is HW495-2.
The nominal thickness of the environment-friendly halogen-free low-smoke flame-retardant belt of the second wrapping layer is 0.2mm, and the low-smoke halogen-free flame-retardant performance of the cable is provided.
The thickness of the outer sheath was 1.9mm. The model/brand of the sheath material of the outer sheath is WH-4.
The performance requirements of the cable are as follows, and all the test results of the cable are qualified and include:
1. low toxicity energy
The low toxicity energy of the cable is in accordance with the toxicity index of less than or equal to 5 specified in GB/T19666.
2. Environmental protection performance
The raw materials used for the cable should meet the RoHS 2.0 environmental requirements specified in table 1.
TABLE 1
| Sequence number | Project name | RoHS |
| 1 | Lead (pb) | ≤1000 |
| 2 | Mercury (Hg) | ≤1000 |
| 3 | Partition (Cd) | ≤100 |
| 4 | Hexavalent chromium (Cr6+) | ≤1000 |
| 5 | Polybrominated biphenyls (PBB) | ≤1000 |
| 6 | Polybrominated diphenyl ethers (PBDE excluding decabromodiphenyl ether) | ≤1000 |
| 7 | Diisobutyl phthalate (DIBP) | ≤1000 |
| 8 | Di (2-ethylhexyl) phthalate (DEHP) | ≤1000 |
| 9 | Dibutyl phthalate (DBP) | ≤1000 |
| 10 | Butyl Benzyl Phthalate (BBP) | ≤1000 |
3. Waterproof property
The waterproof performance test method is that a cable sample is taken and immersed in water (15-30 ℃) for 72 hours, the structure outside the insulating layer is removed, and the surface layer outside the insulating layer has no visible moisture.
4. Low smoke characteristics
The low smoke performance of the cable in burning meets the test condition specified by IEC61034-2, and the minimum light transmittance of the smoke concentration generated in burning is more than or equal to 60%.
5. Halogen-free character
The halogen-free flame retardant material of the cable has the advantage that the escape amount of halogen acid gas generated during combustion is not more than 5mg/g under the test condition specified by the GB/T17650.1 standard. The pH value and the conductivity of the gas emitted by the low-smoke halogen-free flame-retardant material of the cable during combustion are tested under the test condition specified in GB/T17550.2, the pH value is not less than 4.3, and the conductivity is not more than 10 mu s/mm.
6. Anti-interference performance
The cable shielding inhibition coefficient is not more than 0.05.
Claims (6)
1. A low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable comprises a cable core and an outer sheath outside the cable core, wherein the cable core is formed by twisting a plurality of cable cores, and is characterized in that
The cable-forming twisting pitch diameter ratio of the cable core is 30-40 times; filling is carried out between adjacent cable cores;
the cable core and the outer sheath are sequentially and closely provided with a first wrapping layer, a metal total shielding layer, an inner sheath and a second wrapping layer from inside to outside;
the wire core is formed by wrapping an insulating layer outside a conductor; the cross-sectional area of the conductor was 1.5mm 2 ～400mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The conductor is composed of a single metal monofilament; or the conductor is formed by twisting a plurality of metal monofilaments, and the twisting pitch diameter ratio is 10-25 times; the insulating layer is made of crosslinked polyethylene insulating material, and the thickness of the insulating layer is 0.7-2.0 mm;
the filling is a non-hygroscopic filling material;
the first wrapping layer is formed by overlapping and wrapping an environment-friendly double-sided insulating water-blocking tape, and the wrapping lap rate is not less than 15%;
the metal total shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt;
the inner sheath is composed of low-toxicity environment-friendly halogen-free low-smoke polyolefin sheath material, the nominal thickness of the inner sheath is 1.0-1.8 mm, and the thinnest thickness of the inner sheath is not less than 80-0.2 mm of the nominal thickness;
the second wrapping layer is formed by overlapping and wrapping an environment-friendly halogen-free low-smoke flame-retardant belt, and the wrapping coverage rate is not less than 15%;
the outer sheath is composed of low-toxicity environment-friendly high-flame-retardant halogen-free low-smoke polyolefin sheath material, the nominal thickness of the outer sheath is 1.4 mm-3.1 mm, and the thinnest thickness of the outer sheath is not less than 80% -0.2mm of the nominal thickness.
2. The low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable according to claim 1, wherein the metal monofilament is a bare copper monofilament; the diameter range of the metal monofilament is 0.52 mm-2.92 mm; the diameter range of the conductor is 1.36 mm-23.3 mm; the twisting direction of the metal monofilaments is left.
3. The low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable as claimed in claim 1, wherein the non-hygroscopic filling material is an environment-friendly glass fiber filling rope.
4. The low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable is characterized in that 3 cable cores are arranged; the cabling twisting pitch diameter ratio of the cable is 30 times; the cross-sectional area of the conductor in the single wire core is 70mm 2 。
5. The low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable as claimed in claim 4, wherein the conductor is formed by twisting bare copper monofilaments with the diameter of 2.21mm, and the twisting pitch diameter ratio is 12 times.
6. The low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable as claimed in claim 4, wherein the nominal thickness of the environment-friendly double-sided insulating water-blocking tape of the first wrapping layer is 0.35mm;
the nominal thickness of the aluminum-plastic composite belt of the metal total shielding layer is 0.25mm;
the thickness of the inner sheath is 1.2mm;
the nominal thickness of the environment-friendly halogen-free low-smoke flame-retardant belt of the second wrapping layer is 0.2mm;
the thickness of the outer sheath was 1.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570348.7U CN219246421U (en) | 2022-09-28 | 2022-09-28 | Low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570348.7U CN219246421U (en) | 2022-09-28 | 2022-09-28 | Low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable |
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| Publication Number | Publication Date |
|---|---|
| CN219246421U true CN219246421U (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222570348.7U Active CN219246421U (en) | 2022-09-28 | 2022-09-28 | Low-toxicity environment-friendly anti-interference 0.6/1kV low-voltage waterproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219246421U (en) |
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