CN212624894U

CN212624894U - Environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance

Info

Publication number: CN212624894U
Application number: CN202021178880.9U
Authority: CN
Inventors: 王浩; 王旭鸣; 周建琴
Original assignee: JIANGSU YUANTONG CABLE CO Ltd
Current assignee: JIANGSU YUANTONG CABLE CO Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-02-26
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses an environment-friendly polyvinyl chloride is water-fast corrosion-resistant control cable of resisting wetting, including sinle silk conductor, insulating layer and protective layer, sinle silk conductor, insulating layer and protective layer set gradually from inside to outside, sinle silk conductor includes a plurality of compact type round stranded wires, compact type round stranded wires include copper conductor, flame retardant coating and the conductor shielding layer that sets gradually from inside to outside, the insulating layer includes interior semi-conducting layer, conductor shielding layer, crosslinked polyethylene insulating layer, insulation shielding layer and the outer semi-conducting layer that sets gradually from inside to outside, the protective layer includes inner sheath layer, steel band armor and oversheath layer, be equipped with the copper shielding layer between outer semi-conducting layer and the inner sheath layer. The utility model discloses can effectually avoid impurity to invade cable inner structure, avoid because of the most advanced strong electric field of impurity formation, can block moisture from inside and outside invasion insulating layer effectively, prevent moisture core diffusion along the line, improve the dielectric strength of cable greatly.

Description

Environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance

Technical Field

The utility model belongs to the technical field of control cable, concretely relates to environment-friendly polyvinyl chloride is wet-resistant, water-fast and corrosion-resistant control cable.

Background

The control cable is a polyvinyl chloride insulated and polyvinyl chloride sheathed cable which is suitable for industrial and mining enterprises, energy traffic departments, and occasions of controlling and protecting circuits with the AC rated voltage of below 450/750 volts, and the like.

The control cable in the prior art often leads to uneven electric field on the surface of a wire core and local high electric field caused by introduction of external impurities due to the fact that the wire core conductor is not compact enough and cannot be completely round, and leads to general waterproof performance, ageing resistance, corrosion resistance and pressure resistance of the cable due to the fact that the insulating layer of the cable is designed to be too simple.

Therefore, the environment-friendly polyvinyl chloride moisture-resistant, water-resistant and corrosion-resistant control cable capable of effectively avoiding impurities from invading into the cable inner structure, avoiding a sharp-end strong electric field formed by the impurities, effectively blocking moisture from invading into the insulating layer from the inside and the outside, preventing the moisture from diffusing along the line core and greatly improving the insulating strength is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an environmental protection type polyvinyl chloride is wet resistant water and corrosion resistant control cable to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an environment-friendly polyvinyl chloride is dampproofing water-fast corrosion-resistant control cable, includes sinle silk conductor, insulating layer and protective layer, sinle silk conductor, insulating layer and protective layer set gradually from inside to outside, the sinle silk conductor includes a plurality of compact type round strand wires, compact type round strand wires include copper conductor, flame retardant coating and the conductor shielding layer that sets gradually from inside to outside, the insulating layer includes interior semi-conducting layer, conductor shielding layer, crosslinked polyethylene insulating layer, insulation shielding layer and the outer semi-conducting layer that sets gradually from inside to outside, the protective layer includes inner sheath layer, steel band armor and oversheath layer, be equipped with the copper shielding layer between outer semi-conducting layer and the inner sheath layer.

Preferably, a plurality of the compact round stranded wires are co-extruded to form a round wire core structure.

Preferably, a filling layer is arranged between the core conductor and the insulating layer.

Preferably, the inner semi-conductive layer, the conductor shield layer, the crosslinked polyethylene insulation layer, the insulation shield layer and the outer semi-conductive layer are tightly extruded on the outer surface of the filling layer from inside to outside in sequence.

Preferably, the copper shielding layer is a two-layer annealed copper tape layer spirally lapped and wrapped on the outer surface of the outer semi-conducting layer.

Preferably, the inner sheath layer is a semiconductive buffering water-blocking tape layer, and the outer sheath layer is a polyvinyl chloride outer sheath.

The utility model discloses a technological effect and advantage: the environment-friendly polyvinyl chloride moisture-resistant, water-resistant and corrosion-resistant control cable is characterized in that a core conductor is designed into a multi-core compacting type round stranded wire, the core conductor is compacted into a round shape, impurities can be effectively prevented from invading an inner structure of the cable, a sharp-end strong electric field formed by the impurities is avoided, an inner semi-conducting layer, a conductor shielding layer, a cross-linked polyethylene insulating layer, an insulating shielding layer and an outer semi-conducting layer are adopted for co-extrusion, the arrangement of the inner semi-conducting layer and the outer semi-conducting layer can compensate the phenomenon that the stranded core conductor, namely the core conductor, can not be completely round, an electric field on the surface of the uniform core is uniform, the local high electric field caused by accidental spurs of the core and the introduction of external impurities in the manufacturing process can be prevented, the conductor shielding layer, the cross-linked, the insulation strength is greatly improved, the breakdown strength of the cable is high due to the crosslinked polyethylene insulation layer, the insulation resistance is large, the dielectric loss tangent value is low, the aging resistance, the heat resistance, the mechanical property and the corrosion resistance of the cable are greatly improved, the copper shielding layer is in good contact with the shielded semi-conducting layer, the polyvinyl chloride outer sheath is adopted to protect the cable, the cable has a good protection effect, the longitudinal mechanical stress of the cable is increased due to the steel tape armoring layer, the influence of mechanical force on the cable is reduced, and meanwhile, the cable also has a uniform electric field and has a protection effect of passing fault current and the like.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the core conductor and the filling layer of the present invention;

fig. 3 is a schematic structural view of the core conductor of the present invention;

fig. 4 is a schematic structural view of the insulating layer of the present invention;

fig. 5 is a schematic structural diagram of the protective layer of the present invention.

In the figure: 1. a core conductor; 2. an insulating layer; 3. a protective layer; 4. compacting the round stranded wire; 5. a copper conductor; 6. a refractory layer; 7. a conductor shield layer; 8. a filling layer; 9. an inner semiconductive layer; 10. a conductor shield layer; 11. a crosslinked polyethylene insulating layer; 12. an insulating shield layer; 13. an outer semiconducting layer; 14. an inner jacket layer; 15. a steel tape armor layer; 16. an outer jacket layer; 17. a copper shield layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an environment-friendly polyvinyl chloride moisture-resistant, water-resistant and corrosion-resistant control cable as shown in figures 1-5, which comprises a core conductor 1, an insulating layer 2 and a protective layer 3, wherein the core conductor 1, the insulating layer 2 and the protective layer 3 are sequentially arranged from inside to outside, and a filling layer 8 is arranged between the core conductor 1 and the insulating layer 2;

the cable core conductor 1 comprises a plurality of compact round stranded wires 4, the compact round stranded wires 4 are co-extruded to form a round cable core structure, the compact round stranded wires 4 comprise copper conductors 5, fire-resistant layers 6 and conductor shielding layers 7 which are sequentially arranged from inside to outside, the cable core conductor 1 is designed to be a multi-core compact round stranded wire 4, the cable core conductor 1 is compacted to be round, impurities can be effectively prevented from invading into the inner structure of the cable, and a sharp-end strong electric field formed by the impurities is avoided;

the insulating layer 2 includes interior semi-conductive layer 9, conductor shielding layer 10, crosslinked polyethylene insulating layer 11, insulating shielding layer 12 and outer semi-conductive layer 13 that set gradually from inside to outside, interior semi-conductive layer 9, conductor shielding layer 10, crosslinked polyethylene insulating layer 11, insulating shielding layer 12 and outer semi-conductive layer 13 are closely extruded in the surface of filling layer 8 from inside to outside in proper order, adopt interior semi-conductive layer 9, conductor shielding layer 10, crosslinked polyethylene insulating layer 11, insulating shielding layer 12 and outer semi-conductive layer 13 coextrusion process, wherein the setting of interior semi-conductive layer 9 and outer semi-conductive layer 13 can compensate the transposition sinle silk promptly sinle silk conductor 1 can't become the circle completely, even sinle silk surface inhomogeneous sinle silk electric field, can also prevent the unexpected spurt in the manufacturing process and the local high electric field that leads to the introduction of external impurity caused, conductor shielding layer 10, crosslinked polyethylene insulating layer 11, The crosslinked polyethylene insulating layer 11 and the insulating shielding layer 12 can effectively prevent moisture from invading the insulating layer from the inside and the outside, prevent the moisture from diffusing along the line core, and greatly improve the insulating strength, and the crosslinked polyethylene insulating layer 11 ensures that the cable has high breakdown strength, large insulation resistance and low dielectric loss tangent value, so that the aging resistance, the heat resistance, the mechanical property and the corrosion resistance of the cable are greatly improved;

the protective layer 3 comprises an inner sheath layer 14, a steel tape armor layer 15 and an outer sheath layer 16, a copper shielding layer 17 is arranged between the outer semi-conductive layer 13 and the inner sheath layer 14, the copper shielding layer 17 is a two-layer annealing copper tape layer which is spirally overlapped and wrapped on the outer surface of the outer semi-conductive layer 13, the inner sheath layer 14 is a semi-conductive buffering water-blocking tape layer, the outer sheath layer 16 is a polyvinyl chloride outer sheath, the copper shielding layer 17 is in good contact with the semi-conductive layer which is shielded, the protective effect is good, the steel tape armor layer 15 increases the longitudinal mechanical stress of the cable, the influence of mechanical force on the cable is reduced, meanwhile, the electric field is uniform, and the protective effect such as fault current is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an environment-friendly polyvinyl chloride is wet resistant to water corrosion-resistant control cable, includes sinle silk conductor (1), insulating layer (2) and protective layer (3), its characterized in that: sinle conductor (1), insulating layer (2) and protective layer (3) set gradually from inside to outside, sinle conductor (1) includes a plurality of compact type round strand wires (4), compact type round strand wires (4) include copper conductor (5), flame retardant coating (6) and conductor shielding layer (7) that set gradually from inside to outside, insulating layer (2) include interior semi-conductive layer (9), conductor shielding layer (10), crosslinked polyethylene insulating layer (11), insulating shield (12) and outer semi-conductive layer (13) that set gradually from inside to outside, protective layer (3) include inner sheath layer (14), steel band armor (15) and oversheath layer (16), be equipped with shielding copper layer (17) between outer semi-conductive layer (13) and inner sheath layer (14).

2. The environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance as claimed in claim 1, wherein: and a plurality of the compact round stranded wires (4) are co-extruded to form a round wire core structure.

3. The environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance as claimed in claim 1, wherein: and a filling layer (8) is arranged between the core conductor (1) and the insulating layer (2).

4. The environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance as claimed in claim 3, wherein: the inner semi-conducting layer (9), the conductor shielding layer (10), the cross-linked polyethylene insulating layer (11), the insulating shielding layer (12) and the outer semi-conducting layer (13) are sequentially and tightly extruded on the outer surface of the filling layer (8) from inside to outside.

5. The environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance as claimed in claim 1, wherein: the copper shielding layer (17) is a two-layer annealing copper belt layer which is spirally lapped and wound on the outer surface of the outer semi-conducting layer (13).

6. The environment-friendly polyvinyl chloride control cable with moisture resistance, water resistance and corrosion resistance as claimed in claim 1, wherein: the inner sheath layer (14) is a semiconductive buffering water-blocking tape layer, and the outer sheath layer (16) is a polyvinyl chloride outer sheath.