CN213277505U

CN213277505U - Double-layer armored three-core ocean cable

Info

Publication number: CN213277505U
Application number: CN202022100584.3U
Authority: CN
Inventors: 殷大为; 李夫光; 昝玉燕
Original assignee: Yangzhou Yongcheng Appliance Cable Co ltd
Current assignee: Yangzhou Yongcheng Appliance Cable Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-05-25
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a three-core ocean cable of double-deck armor, from inside to outside include many cable cores in proper order, the band layer, the inner liner, armor and outer tegument, insulating heart yearn includes the conductor that blocks water from inside to outside in proper order, the conductor shielding layer, the XLPE insulating layer, the insulation shielding layer, the semiconduction water-blocking layer, alloy lead sheathing and plastics reinforcing protective layer, the armor includes first armor and second armor, first armor adopts double-deck steel band winding to form, the second armor adopts the individual layer steel band winding to form, be equipped with the wearing layer between first armor and the second armor, be provided with the filler strip between cable core and the band layer. The utility model discloses can not only improve anti side pressure ability, anti bending property is also good simultaneously, guarantees the permanent life-span of cable and stable performance.

Description

Double-layer armored three-core ocean cable

Technical Field

The utility model relates to a marine cable, in particular to three core marine cables of double-deck armor.

Background

With the rapid development of ocean development, offshore island industry and tourism industry in China, the demand for electric power is more and more, the original medium-voltage submarine cable line cannot meet the rapidly-increased electric power demand, and the development of coastal wind power also needs more and more high-voltage submarine cables to transmit electric energy generated by wind energy to a nearby power grid. But the development of marine economy has also strained the required access or routing for offshore marine cables and other installations, and the routing has become more and more expensive.

Submarine cables are subject to high corrosion rates due to prolonged immersion in high concentrations of seawater. If the steel wire is directly contacted with seawater, the service life of the general 6mm rough galvanized steel wire in the south sea is not more than 8 years, and the service life of the general 6mm rough galvanized steel wire in the north sea is not more than 12 years. The submarine cable in China is mainly applied to places such as coastal continental shelves, inland river and lake crossing and the like, the cable is frequently damaged by man-made machinery, and the transmission performance of optical fibers in the cable cannot be guaranteed after the cable is dragged by large tension.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the prior art defect, providing a double-deck armor three-core ocean cable, can not only improve anti side pressure ability, anti bending property is also good simultaneously, guarantees the permanent life-span of cable and stable performance.

The purpose of the utility model is realized like this: the utility model provides a three-core marine cable of double-deck armor, includes many insulating heart yearns, band layer, inner liner, armor and tegument from inside to outside in proper order, insulating heart yearn includes the conductor that blocks water, conductor shielding layer, XLPE insulating layer, insulating shielding layer, semiconduction water-blocking layer, alloy lead jacket layer and plastics reinforcing protective layer from inside to outside in proper order, the armor includes first armor and second armor, first armor adopts double-deck steel band winding to form, the second armor adopts the individual layer steel band winding to form, be equipped with the abrasionproof layer between first armor and the second armor, be provided with the packing strip between insulating heart yearn and the band layer.

The utility model adopts the above technical scheme, compare with prior art, beneficial effect lies in: this cable structure has double-deck armor, and the double-deck steel band winding of first armor forms, and the second armor adopts the winding of individual layer steel band to form for cable tensile compressive property is good, is equipped with the packing in the cable and makes the water-proof effects of cable better, and corrosion resistance is stronger, and the abrasionproof layer has reduced the friction between the double armor, has increased the pliability of cable.

Furthermore, the insulation core wires are distributed in a star shape.

In order to resist the action of stretching and bending outside and ensure that the tensile property of the cable is better, the first armor layer is formed by winding double-layer medium carbon galvanized steel strips, and the winding angle is less than 60 degrees.

In order to resist external pressure and enable the compression resistance of the cable to be better, the second armor layer is formed by winding a single-layer spiral medium-carbon galvanized steel strip, and the winding angle is 90 degrees.

In order to reduce friction and abrasion of the first armor layer and the second armor layer in a bending process and enhance flexibility of the cable, the abrasion-proof layer is formed by spirally winding a polymer strip.

In order to increase the corrosion resistance and mechanical strength of the cable, the filling strip is made of polypropylene material mixed with glass fibers.

In order to prolong the corrosion resistance life of the steel wires of the armor layer in seawater, the outer layer is directly wrapped on the first armor layer by adopting a polypropylene fiber rope and is uniformly coated by asphalt.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

The cable comprises a water-blocking conductor 1, a conductor shielding layer 2, a XLPE insulating layer 3, an insulating shielding layer 4, a semi-conductive water-blocking layer 5, an alloy lead sheath layer 6, a plastic reinforcing protective layer 7, a filling strip 8, a belting layer 9, an inner lining layer 10, a first armor layer 11, a second armor layer 12, an anti-abrasion layer 13 and a tegument layer 14

Detailed Description

The double-armored three-core ocean cable shown in fig. 1-2 comprises a plurality of insulating core wires, a belting layer 9, an inner liner layer 10, an armor layer and an outer tegument layer 14 from inside to outside in sequence, wherein the three insulating core wires are distributed in a star shape, the insulating core wires comprise a water-blocking conductor 1, a conductor shielding layer 2, an XLPE insulating layer 3, an insulating shielding layer 4, a semi-conductive water-blocking layer 5, an alloy lead sheath layer 6 and a plastic reinforcing protective layer 7 from inside to outside in sequence, the armor layer comprises a first armor layer 11 and a second armor layer 12, the first armor layer 11 is formed by winding a double-layer steel belt, the first armor layer 11 is formed by winding a double-layer medium carbon galvanized steel belt, and the winding angle is; the second armor layer 12 is formed by winding a single-layer steel belt, the second armor layer 12 is formed by winding a single-layer spiral medium carbon galvanized steel belt, and the winding angle is 90 degrees; an anti-abrasion layer 13 is arranged between the first armor layer 11 and the second armor layer 12, and the anti-abrasion layer 13 is formed by spirally winding a polymer belt; a filling strip 8 is arranged between the insulating core wire and the belting layer 9, and the filling strip 8 is made of polypropylene material mixed with glass fiber; the outer layer 14 is directly wrapped on the first armor layer 11 by using a polypropylene fiber rope and is uniformly coated by using asphalt.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. The utility model provides a three-core marine cable of double-deck armor, its characterized in that includes many insulating heart yearns, band layer, inner liner, armor and tegument from inside to outside in proper order, insulating heart yearn includes the conductor that blocks water, conductor shielding layer from inside to outside in proper order, the XLPE insulating layer, the insulation shielding layer, semiconduction water-blocking layer, alloy lead sheathing layer and plastics reinforcing protective layer, the armor includes first armor and second armor, first armor adopts double-deck steel band winding to form, the second armor adopts single-deck steel band winding to form, be equipped with the abrasionproof layer between first armor and the second armor, be provided with the filler strip between insulating heart yearn and the band layer.

2. The double-armored three-core marine cable according to claim 1, wherein the insulated core wires are distributed in a star shape.

3. The double-layer armored three-core marine cable according to claim 1, wherein the first armor layer is formed by winding a double-layer medium carbon galvanized steel strip, and the winding angle is less than 60 degrees.

4. The double-armored three-core marine cable according to claim 1, wherein the second armor layer is formed by winding a single spiral medium carbon galvanized steel strip, and the winding angle is 90 °.

5. The double-armored three-core marine cable of claim 1, wherein the wear layer is helically wound from a polymeric tape.

6. The double-armored three-core marine cable according to claim 1, wherein the filler strips are made of polypropylene material mixed with glass fibers.

7. The double-armored three-core marine cable according to claim 1, wherein the sheath layer is wrapped directly around the first armor layer with polypropylene fiber ropes and is uniformly coated with asphalt.