CN214476536U - Low-temperature-resistant rat-proof and termite-proof pre-branch cable - Google Patents
Low-temperature-resistant rat-proof and termite-proof pre-branch cable Download PDFInfo
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- CN214476536U CN214476536U CN202120225348.6U CN202120225348U CN214476536U CN 214476536 U CN214476536 U CN 214476536U CN 202120225348 U CN202120225348 U CN 202120225348U CN 214476536 U CN214476536 U CN 214476536U
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Abstract
The utility model discloses a low temperature resistant rat-proof ant pre-branch cable, a main cable comprises two first insulation wire cores and is filled with core materials to form a first cable core, the outside of the first cable core is coated with a main cable PET semiconductor wrapping band layer, a copper-plastic composite band wrapping shielding layer, an insulation anticorrosive layer, a steel wire armor layer and a silane grafting crosslinking high-density polyethylene sheath, a branch cable comprises two second insulation wire cores and is filled with core materials to form a second cable core, the outside of the branch cable is coated with a branch cable PET semiconductor wrapping band layer, a shielding mesh conductor layer and a PTFE wrapping band layer, silane grafting crosslinked high density polyethylene inner sheath layer, nylon anticorrosive coating and silane grafting crosslinked high density polyethylene oversheath layer, first insulating sinle silk and second insulating sinle silk all include inner conductor, insulating layer and rubber thermal expansion layer, and the connecting piece includes that fluororesin winds band layer, stainless steel wire armor, PTFE outward winds cladding and TPE oversheath. The cable is suitable for low-temperature working conditions, prevents damage of rats and ants, and improves safety and reliability.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a low temperature resistant type protection against rodents ant is branch cable in advance.
Background
The pre-branch cable is a substitute product for supplying power to a bus duct in a high-rise building. The power supply is reliable, the installation is convenient, the occupied building area is small, the failure rate is low, and the maintenance is not needed. The vertical power supply system is widely applied to vertical power supply in high and medium-rise buildings, residential buildings, commercial buildings, hotels and hospital electrical shafts, and is also applicable to power supply systems of tunnels, airports, bridges, highways and the like. However, the phenomena that the cable is bitten by mice and damaged by insects and ants are common, and the outer skin of the cable is damaged, so that not only can important power supply faults and information confusion be caused, but also serious accidents of fire disasters caused by electric leakage short circuit can be even caused. The chemical prevention method of using toxic chemical substances to prepare medicaments to smear and form a medicinal cable to strongly kill rats and ants can not effectively solve the problem of cable protection, but can not treat symptoms and root causes.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a low temperature resistant type protection against rodents ant branch cable in advance, and adaptation low temperature operating mode environment ability is strong, can effectually prevent that the insect ant from moth and corroding and mouse bite harm, improves the fail safe nature that the cable used.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The low-temperature-resistant rat-proof and termite-proof pre-branch cable comprises a main cable, branch cables and a connecting piece, wherein exposed conductors are respectively peeled at the compression joint parts of the main cable and the branch cables and are coated and fixed with polypropylene resin filled core materials together through the connecting piece into a whole, the main cable comprises two first insulating cores which are twisted in pairs and are filled with the first resin filled core materials to form a first cable core, a main cable PET semiconductor winding tape layer, a copper-plastic composite tape winding shielding layer, an insulating anti-corrosion layer, a steel wire armor layer and a silane-grafted crosslinked high-density polyethylene sheath are sequentially coated outside the first cable core, the first insulating cores comprise first inner conductors, a first silane-grafted crosslinked low-density polyethylene insulating layer and a first chlorinated polyethylene rubber thermal expansion layer are sequentially coated outside the first inner conductors, the branch cable comprises two second insulating cores which are twisted in pairs and are filled with second resin to form a second cable core, the connecting piece comprises a fluorine resin winding belting layer, a stainless steel wire armor layer, a PTFE outer winding covering layer and a TPE outer sheath in sequence from inside to outside.
Preferably, the first inner conductor and the second inner conductor are both a compound stranded wire formed by concentrically twisting a plurality of stranded wires, each stranded wire is formed by twisting a plurality of tinned copper monofilament bundles with the diameter of 0.02mm to 0.1mm, and the twisting direction of the tinned copper monofilament is opposite to that of the stranded wire.
Preferably, the copper-plastic composite tape lapping shielding layer is a copper-plastic composite tape lapping and lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer.
Preferably, the insulating anticorrosive layer is a PE resin base layer on which an anticorrosive functional coating is sprayed.
Preferably, the PET semiconductor wrapping tape layer of the branch cable is of a gap wrapping structure, and the winding distance is 2-4 times of the bandwidth.
Preferably, the shielding mesh conductor layer is formed by spirally winding and weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in opposite directions.
Preferably, the first inner conductor and the second inner conductor are coated with a nickel copper-proof coating and a zinc oxide barrier layer in sequence.
Preferably, the first resin-filled core material and the second resin-filled core material are both polypropylene resin core materials or nylon resin core materials.
Preferably, the PTFE outer wrapping layer is a PTFE resin tape lapping and wrapping structure.
Preferably, the fluororesin wrapping tape layer is an FEP, PFA or ETFE resin layer.
The utility model has the advantages that:
1. polypropylene resin filling core materials are added to the exposed conductor parts of the main cable and the branch cable in the crimping positions respectively, the main cable and the branch cable are wrapped and fixed through the connecting piece, the inner side of the TPE outer sheath of the connecting piece is provided with the stainless steel wire armor layer, damage of mice and insects to the weak crimping positions such as moth eating and biting can be effectively prevented, and the safety and reliability of the weak parts of the pre-branch cable are improved. The silane grafted cross-linked high-density polyethylene sheath of the main cable has a small static friction coefficient, is beneficial to improving the flexibility and the deflection resistance of the cable, has strong adaptability to low-temperature working conditions and is not easy to crack. The silane grafted crosslinked high-density polyethylene inner sheath layer, the nylon anticorrosive layer and the silane grafted crosslinked high-density polyethylene outer sheath layer of the branch cable can be laminated together through an adhesive to form a three-layer sandwich sheath structure, the interlayer peeling phenomenon is not easy to occur, the nylon anticorrosive layer is high in hardness and can effectively prevent mice from being damaged by insects and ants and biting, the silane grafted crosslinked high-density polyethylene inner sheath layer and the silane grafted crosslinked high-density polyethylene outer sheath layer have better flexibility, electrical insulation and water resistance, the capability of adapting to low-temperature working condition environment is strong, cracking is not prone to occurring, and the flexibility is excellent.
2. The chlorinated polyethylene rubber thermal expansion layer is arranged on the insulating wire cores of the main cable and the branch cable, and contains thermal expansion agent components such as expanded graphite, so that the thermal expansion coefficient is large, when short circuit heating occurs between the two twisted insulating wire cores, the chlorinated polyethylene rubber thermal expansion layer can rapidly expand in volume by multiple times to isolate the two insulating wire cores, and therefore the short circuit can be timely and effectively cut off at the early stage of the short circuit, and powerful guarantee is provided for the safe operation of a power supply system.
3. The outside spraying of inner conductor has nickel matter to prevent harmful coating of copper and zinc oxide barrier layer, can block that inner conductor and insulating layer take place direct contact, prevents that copper ion diffusion from causing the harmful phenomenon of copper to take place to the insulating layer, and the zinc oxide barrier layer can protect nickel matter to prevent that the harmful coating of copper from taking place oxidation reaction to, improve cable insulation's ageing resistance, increase of service life.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;
FIG. 3 is a cross-sectional structural schematic view of the main cable of FIG. 2;
fig. 4 is a schematic cross-sectional structure view of the branch cable of fig. 2.
In the figure: 1-main cable, 2-branch cable, 3-connecting piece, 4-polypropylene resin filling core material, 11-first insulating core material, 12-first resin filling core material, 13-main cable PET semiconductor wrapping tape layer, 14-copper plastic composite tape wrapping shielding layer, 15-insulating anti-corrosion layer, 16-steel wire armor layer, 17-silane grafted crosslinked high-density polyethylene sheath, 18-first inner conductor, 19-first silane grafted crosslinked low-density polyethylene insulating layer, 20-first chlorinated polyethylene rubber thermal expansion layer, 21-second insulating core material, 22-second resin filling core material, 23-branch cable PET semiconductor wrapping tape layer, 24-shielding mesh conductor layer, 25-PTFE wrapping tape layer, 26-silane grafted crosslinked high-density polyethylene inner sheath layer, 27-nylon anticorrosive layer, 28-silane graft cross-linked high-density polyethylene outer sheath layer, 29-second inner conductor, 291-second silane graft cross-linked low-density polyethylene insulating layer, 292-second chlorinated polyethylene rubber thermal expansion layer, 31-fluororesin wrapping tape layer, 32-stainless steel wire armor layer, 33-PTFE outer wrapping layer and 34-TPE outer sheath.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 4, the utility model discloses low temperature resistant type protection against rodents ant branch cable in advance of preventing includes main cable 1, branch cable 2 and connecting piece 3 main cable 1 with branch cable 2's crimping position is peeled respectively and is exposed the conductor and pass through jointly with polypropylene resin filling core 4 connecting piece 3 cladding is fixed as an organic whole, connecting piece 3 includes fluororesin in proper order from interior to exterior around band layer 31, stainless steel wire armor 32, PTFE outward around covering 33 and TPE oversheath 34. Preferably, the PTFE outer wrapping layer 33 is a PTFE resin tape lapping and wrapping structure. The fluororesin wrapping tape layer 31 is formed of, for example, a FEP, PFA or ETFE resin layer.
As shown in fig. 3, the main cable 1 includes two first insulating cores 11 twisted in pairs and filled with a first resin-filled core 12 to form a first cable core, the outside of the first cable core is sequentially wrapped with a main cable PET semiconductor wrapping tape layer 13, a copper-plastic composite tape wrapping shielding layer 14, an insulating anticorrosive layer 15, a steel wire armor layer 16 and a silane-grafted crosslinked high-density polyethylene sheath 17, in one embodiment, the copper-plastic composite tape wrapping shielding layer 14 is a copper-plastic composite tape covering wrapping structure, and the copper-plastic composite tape includes a copper foil tape outer layer and a PTFE resin inner layer. In one embodiment, the insulating and corrosion-preventing layer 15 is a PE resin base layer coated with a corrosion-preventing functional coating. The first resin-filled core material 12 is a polypropylene resin core material or a nylon resin core material. The first insulating wire core 11 comprises a first inner conductor 18, and a first silane grafted crosslinked low-density polyethylene insulating layer 19 and a first chlorinated polyethylene rubber thermal expansion layer 20 are sequentially coated outside the first inner conductor 18. Specifically, the first inner conductor 18 is a compound stranded wire formed by concentrically twisting a plurality of stranded wires, the stranded wires are formed by twisting a plurality of tinned copper monofilament bundles with the diameter of 0.02mm to 0.1mm, and the twisting direction of the tinned copper monofilament is opposite to that of the stranded wires. Further, the exterior of the first inner conductor 18 is sequentially sprayed with a nickel copper-proof coating and a zinc oxide barrier layer.
As shown in fig. 4, the branch cable 2 includes two second insulated wire cores 21 twisted in pairs and filled with a second resin-filled core 22 to form a second cable core, and the outside of the second cable core is sequentially wrapped with a branch cable PET semiconductor tape winding layer 23, a shielding mesh conductor layer 24, a PTFE tape winding layer 25, a silane-grafted cross-linked high-density polyethylene inner sheath layer 26, a nylon corrosion protection layer 27, and a silane-grafted cross-linked high-density polyethylene outer sheath layer 28. Specifically, the PET semiconductor tape layer 23 of the branch cable is a gap-lapping structure and the winding pitch is 2 to 4 times of the bandwidth. In one embodiment, the shielding mesh conductor layer 24 is formed by weaving polyester fiber copper foil filaments and tin-plated copper filaments in a reverse spiral winding manner. The second resin-filled core 22 is a polypropylene resin core or a nylon resin core, and in this embodiment, is a polypropylene resin core tube. The second insulated wire core 21 comprises a second inner conductor 29, and a second silane grafted cross-linked low-density polyethylene insulated layer 291 and a second chlorinated polyethylene rubber thermal expansion layer 292 are sequentially coated outside the second inner conductor 29. Specifically, the second inner conductor 29 is a twisted wire formed by concentrically twisting a plurality of strands, the strands are formed by twisting a plurality of tinned copper monofilament bundles with a diameter of 0.02mm to 0.1mm, and the twisting direction of the tinned copper monofilament is opposite to that of the strands. Further, the exterior of the second inner conductor 29 is sequentially sprayed with a nickel copper-proof coating and a zinc oxide barrier layer.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.
Claims (10)
1. Low temperature resistant type protection against rodents ant is branch cable in advance, characterized by: the cable comprises a main cable (1), branch cables (2) and a connecting piece (3), wherein exposed conductors are respectively peeled at the compression joint parts of the main cable (1) and the branch cables (2) and are coated and fixed together with polypropylene resin filling core materials (4) through the connecting piece (3), the main cable (1) comprises two first insulating wire cores (11) which are twisted in pairs and filled with first resin filling core materials (12) to form a first cable core, a main cable PET semiconductor wrapping tape layer (13), a copper-plastic composite tape wrapping shielding layer (14), an insulating anti-corrosion layer (15), a steel wire armor layer (16) and a silane grafted crosslinked high-density polyethylene sheath (17) are sequentially coated outside the first cable core (11) comprising a first inner conductor (18) and a first silane grafted crosslinked low-density polyethylene insulating layer (19) and a first chlorinated polyethylene rubber thermal expansion layer (20) are sequentially coated outside the first inner conductor (18), the branch cable (2) comprises two second insulating wire cores (21) which are twisted in pairs and filled with a second resin filling core material (22) to form a second cable core, the outside of the second cable core is sequentially wrapped with a branch cable PET semiconductor winding wrapping tape layer (23), a shielding mesh conductor layer (24), a PTFE winding wrapping tape layer (25), a silane grafted crosslinked high-density polyethylene inner sheath layer (26), a nylon anticorrosive layer (27) and a silane grafted crosslinked high-density polyethylene outer sheath layer (28), each second insulating wire core (21) comprises a second inner conductor (29) and a second silane grafted crosslinked low-density polyethylene insulating layer (291) and a second chlorinated polyethylene rubber thermal expansion layer (292) are sequentially wrapped on the outside of the second inner conductor (29), and the connecting piece (3) sequentially comprises a fluororesin winding wrapping tape layer (31), a stainless steel wire armor layer (32) and a second chlorinated polyethylene rubber thermal expansion layer (292) from inside to outside, A PTFE outer wrap (33) and a TPE outer wrap (34).
2. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the first inner conductor (18) and the second inner conductor (29) are both a compound stranded wire formed by concentrically twisting a plurality of stranded wires, the stranded wires are formed by twisting a plurality of tinned copper monofilament bundles with the diameter of 0.02mm to 0.1mm, and the twisting direction of the tinned copper monofilament is opposite to that of the stranded wires.
3. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the copper-plastic composite tape lapping shielding layer (14) is of a copper-plastic composite tape lapping and lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer.
4. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the insulating anticorrosive layer (15) is a PE resin base layer coated with an anticorrosive functional coating.
5. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the PET semiconductor winding and wrapping tape layer (23) of the branch cable is of a gap winding and wrapping structure, and the winding distance is 2-4 times of the bandwidth.
6. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the shielding mesh-shaped conductor layer (24) is formed by spirally winding and weaving polyester fiber copper foil filaments and tin-plated copper monofilaments in opposite directions.
7. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the first inner conductor (18) and the second inner conductor (29) are coated with a nickel copper-proof coating and a zinc oxide barrier layer in sequence.
8. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the first resin-filled core material (12) and the second resin-filled core material (22) are both polypropylene resin core materials or nylon resin core materials.
9. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the PTFE outer wrapping layer (33) is a PTFE resin tape lapping and wrapping structure.
10. The low temperature resistant rat and ant prevention pre-branch cable according to claim 1, which is characterized in that: the fluororesin wrapping tape layer (31) is an FEP, PFA or ETFE resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120225348.6U CN214476536U (en) | 2021-01-27 | 2021-01-27 | Low-temperature-resistant rat-proof and termite-proof pre-branch cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120225348.6U CN214476536U (en) | 2021-01-27 | 2021-01-27 | Low-temperature-resistant rat-proof and termite-proof pre-branch cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214476536U true CN214476536U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120225348.6U Active CN214476536U (en) | 2021-01-27 | 2021-01-27 | Low-temperature-resistant rat-proof and termite-proof pre-branch cable |
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| Country | Link |
|---|---|
| CN (1) | CN214476536U (en) |
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2021
- 2021-01-27 CN CN202120225348.6U patent/CN214476536U/en active Active
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