CN102969071A - Submarine cable with increased current-carrying capacity - Google Patents

Submarine cable with increased current-carrying capacity Download PDF

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Publication number
CN102969071A
CN102969071A CN2012105371032A CN201210537103A CN102969071A CN 102969071 A CN102969071 A CN 102969071A CN 2012105371032 A CN2012105371032 A CN 2012105371032A CN 201210537103 A CN201210537103 A CN 201210537103A CN 102969071 A CN102969071 A CN 102969071A
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periphery
layer
copper
coated
submarine cable
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CN2012105371032A
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CN102969071B (en
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李永江
陆云春
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Jiangsu Yuanyang Dongze Cable Co Ltd
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Jiangsu Yuanyang Dongze Cable Co Ltd
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Abstract

The invention relates to a submarine cable with an increased current-carrying capacity. Conductor layers comprising a plurality of annealed copper wires with high conductivity are tightly distributed at the periphery of a tin-plated copper spiral pipe; a carbon black paper conductor shielding layer, an oil-filled high-voltage cable paper insulating layer, a carbon black paper insulation shielding layer, a copper strip insulation shielding layer and a seamless lead-alloy sheath are wrapped at the periphery of the conductor layers sequentially; asphalt is evenly coated at the periphery of the seamless lead-alloy sheath; and a self-adhesive polyethylene strip inner cushion layer, double stainless steel strip strengthening layers, a self-adhesive polyethylene strip outer cushion layer, a non-woven fabric liner layer, a high-density polyethylene corrosion resisting layer, an armoured inner cushion layer formed by evenly soaking hemp ropes at intervals through polypropylene ropes in a concentric stranding manner, an armoured layer formed by uniform spacing of aluminum-magnesium-plated alloy steel wires and a copper wire in the concentric stranding manner and an outer protecting layer are wrapped at the periphery of the seamless lead-alloy sheath sequentially. The submarine cable has a larger current-carrying capacity and is excellent in water seepage resistance, seawater corrosion resistance, external water pressure resistance, voltage thermal shock resistance and tension bending resistance. In addition, the submarine cable also has the advantages of long service life and high reliability.

Description

A kind of submarine cable that increases ampacity
Technical field
The present invention relates to a kind of power cable, particularly a kind of submarine cable that increases ampacity.
Background technology
Development and use along with marine energy, submarine cable as seabed delivery of electrical energy current-carrying device uses more and more, specification requirement is also more and more higher, especially require cable machinery physical property and electric property excellent, water-impervious, seawater corrosion resistance, anti-external water pressure, proof voltage thermal shock and tension bending property with larger ampacity, excellence, long service life, reliability is high.Submarine cable of the prior art has more been paid close attention to seawater corrosion resistance, tension is dragged mechanical performance and water-impervious performance, and has ignored the requirement that cable is had larger ampacity.
Publication number is that the Chinese utility model patent of CN 201130552Y discloses a kind of submarine cable, it is provided with conductor, insulating barrier, resilient coating, plumbous cover, inner covering, armour and serving from inside to outside, between lead cover and inner covering, be provided with the semiconductive polyethylene anticorrosive coating, the induced potential that makes lead put generation is directly eliminated by semiconductive polyethylene anticorrosive coating ground connection, and does not need to destroy inner covering.The construction of cable of its announcement is simple, convenient processing and manufacture, but this structural cable ampacity is lower, and tension is crooked and tension to drag mechanical performance general, especially the anti-seawater corrosion performance of aluminum-alloy wire is very poor in the armour, thereby causes to decline to a great extent the useful life of cable.
Publication number is that the Chinese invention patent of CN 101807453A discloses a kind of power cable for the seabed; comprise the core, screen, insulating barrier, semiconductive water-blocking buffer layer, plumbous cover and semiconductive polyethylene inner cushion layer, insulator screen and sheath, armouring inner cushion layer, armour and the armouring external protection that arrange from inside to outside; core is comprised of steel wire and wire and aluminum conductor; armour is comprised of galvanized steel wire rope, is being provided with between galvanized steel wire rope every the magnetic aluminum-alloy wire.This invention provides a kind of low cost of manufacture, tensile strength to reach greatly the qualified sea electric power cable of electric conductivity.But it adopts the steel combined with aluminum twisted wire as conductor, adopt zinc-coated wire and aluminum-alloy wire as armour, because of the Seawater durability of aluminium relatively poor, permanent use can cause aluminum steel weakened useful life by corrosion, bring the use potential safety hazard, especially will no longer have separated magnetic effect behind the aluminum-alloy wire corrosion and ageing in the armouring, this moment, wire armoring produced eddy current loss at single-core cable, cause the cable current capacity to descend, do not reach the ampacity of desired design.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, a kind of submarine cable that increases ampacity is provided, have water-impervious, seawater corrosion resistance, anti-external water pressure, proof voltage thermal shock and the tension bending property of larger ampacity, excellence, long service life, reliability is high.
For realizing above purpose, a kind of submarine cable that increases ampacity provided by the present invention, the inner chamber of tin-coated copper helix tube is provided with the hollow oil duct, the periphery close-packed arrays of described tin-coated copper helix tube has many high conduction annealed copper lines to consist of conductor layer, the periphery of described conductor layer evenly is surrounded with the carbon black paper conductor shield, the periphery of described carbon black paper conductor shield evenly is surrounded with oil-filled high-tension cable paper insulation layer, the periphery of described oil-filled high-tension cable paper insulation layer is surrounded with the carbon black paper insulation screen, the periphery of described carbon black paper insulation screen is surrounded with the copper strips insulation screen, the periphery of described copper strips insulation screen is coated with without the seam lead alloy sheath, described periphery without the seam lead alloy sheath evenly is coated with pitch and is surrounded with tack polyethylene band inner cushion layer, the periphery of described tack polyethylene band inner cushion layer is coated with double-layer stainless steel band reinforced layer, the periphery of described double-layer stainless steel band reinforced layer is surrounded with the outer bed course of tack polyethylene band, the periphery of the outer bed course of described tack polyethylene band is surrounded with the nonwoven interlining bed course, the periphery of described nonwoven interlining bed course is extruded with the high density polyethylene (HDPE) anticorrosive coat, the periphery of described high density polyethylene (HDPE) anticorrosive coat is coated with the armouring inner cushion layer that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding, the periphery of described armouring inner cushion layer evenly is coated with pitch and is coated with the armour that is formed by aluminize magnesium alloy steel wire and the even interval of copper alloy silk and concentric stranding, the periphery of described armour is coated with the outer jacket that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding, and the periphery of outer jacket evenly is coated with pitch.
With respect to prior art, the present invention has obtained following beneficial effect: the tin-coated copper helix tube has higher elasticity and conformality, can guarantee to satisfy the fuel feeding of big-length cable, when cable temperature raises, light viscosity oil impregnating agent expanded by heating, the impregnating agent that expands out flows in the dipping ancillary equipment, when cable temperature descends through the hollow oil duct, impregnating agent shrinks, and the impregnating agent in the dipping ancillary equipment floods additional through the hollow oil duct to oil-filled high-tension cable paper insulation layer; Avoid the air gap in the insulating barrier to produce by the oil duct dipping, and prevent from forming too high pressure in the cable, thereby can greatly improve cable operating temperature, increase current-carrying capacity of cable.Conductor layer is arranged in the periphery of tin-coated copper helix tube, and surface area is large, because the kelvin effect of electric current, ampacity is large, and power consumption penalty is little, and the conductive surface electric current distribution is even, and circuit is reliable.The carbon black paper conductor shield has the semiconductive performance, can eliminate the air gap that forms between cable conductor monofilament surface and the oil-filled high-tension cable paper insulation layer, with the conductor equipotential and with the insulating barrier good contact, thereby avoid between conductor and insulating barrier, partial discharge occuring.Oil-filled high-tension cable paper insulation layer can be so that cable operating temperature improves by the impregnating agent that replenishes in the impregnating equipment, and ampacity increases.The carbon black paper insulation screen has the semiconductive performance, can eliminate the air gap that forms between cable insulation surface and the sheath, with the sheath equipotential and with the insulating barrier good contact, thereby avoid the insulation and sheath between partial discharge occurs.The copper strips insulation screen passes through capacitance current when cable normally moves; When system is short-circuited, as the passage of short circuit current, also play the effect of electric field shielding simultaneously.Both can be used as earthing conductor hop short circuit current without the seam lead alloy sheath, and also can be used as waterproof sheath assurance cable core conductor simultaneously and avoid the wet invasion and attack of moisture water, the pitch of coating can improve sea water corrosion resistant.Tack polyethylene band inner cushion layer can buffer double stainless steel band reinforced layer to the compressing of lead alloy sheath, form the flexible contact between sheath and the reinforced layer.Double-layer stainless steel band reinforced layer can bear the oil pressure from cable inside on the one hand, and another side can bear the hydraulic pressure from the cable outside, simultaneously lead alloy sheath is played protective action, protects plumbous gold to close the water-tight performance of sheath.The outer bed course of tack polyethylene band and nonwoven interlining bed course can well be combined as a whole interior external member, and prevent that the inside double-layer stainless steel band reinforced layer from existing the edge projection to stab anticorrosive coat, and even reduce the intensity of outside anticorrosive coat.The magnesium alloy steel wire of aluminizing can well strengthen mechanical tensile strength, and the protection cable is not mechanically damaged, and has excellent anti-seawater corrosion performance; The copper alloy silk both can be every magnetic, and the loss of avoiding the eddy current magnetic hysteresis to cause increases ampacity, and mechanical strength is larger than copper again, and cost is then cheap than copper, and have excellent anti-seawater corrosion performance, benefits for the long-term security operation of cable.The polypropylene rope interval dipping rope made of hemp applies pitch and can greatly improve sea water corrosion resistant as outer jacket.
As preferred version of the present invention, the aperture of described hollow oil duct is 18mm; The thickness of oil-filled high-tension cable paper insulation layer is 10 ± 0.1mm.
As preferred version of the present invention, the filament diameter of described high conduction annealed copper line is 2.57 ± 0.03mm, circular array successively the spiral close-packed arrays in the periphery of tin-coated copper helix tube.
As preferred version of the present invention, the thickness of described carbon black paper conductor shield and carbon black paper insulation screen is respectively 0.5 ± 0.02mm, all adopts the eclipsed form mode to twine, and the winding direction of carbon black paper conductor shield and carbon black paper insulation screen is opposite.
As preferred version of the present invention, the copper strips thickness of described copper strips insulation screen is 0.1 ± 0.01 mm, adopts the eclipsed form mode to twine.
As preferred version of the present invention, described thickness without the seam lead alloy sheath is 4.0 ~ 4.3mm, is plumbous without the weight content in the seam lead alloy sheath: tin: antimony=100:(0.35 ~ 0.45): (0.15 ~ 0.25).This is intact without the sealing of seam lead alloy sheath, both can be used as earthing conductor hop short circuit current, also can be used as waterproof sheath assurance cable core conductor simultaneously and avoids the wet invasion and attack of moisture water.
As preferred version of the present invention, the thickness of the outer bed course of described tack polyethylene band inner cushion layer and tack polyethylene band is 0.75 ~ 0.80mm; The thickness of described nonwoven interlining bed course is 0.15 ~ 0.20mm.
As preferred version of the present invention, the nominal thickness of described high density polyethylene (HDPE) anticorrosive coat is 3.5mm, and minimum thickness is not less than 90% of nominal thickness, and maximum ga(u)ge is not more than 110% of nominal thickness, and the diameter deviation that arbitrary vertical cross-section records is no more than 15%.
As preferred version of the present invention, the nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm in described armouring inner cushion layer and the outer jacket, and the direction of lay of armouring inner cushion layer and outer jacket is opposite.
As preferred version of the present invention, the filament diameter of aluminize magnesium alloy steel wire and the copper alloy silk of described armour is 6.0 ± 0.03 mm; Raw material components and the weight content of copper alloy silk are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.The copper alloy silk both can be every magnetic, and the loss of avoiding the eddy current magnetic hysteresis to cause increases ampacity, and mechanical strength is larger than copper again, and cost is then cheap than copper, and have excellent anti-seawater corrosion performance, benefits for the long-term security operation of cable.
Description of drawings
Fig. 1 is a kind of structural representation that increases the submarine cable of ampacity of the present invention.
Among the figure: 1. tin-coated copper helix tube; 2. conductor layer; 3. carbon black paper conductor shield; 4. oil-filled high-tension cable paper insulation layer; 5. carbon black paper insulation screen; 6. copper strips insulation screen; 7. without the seam lead alloy sheath; 8. tack polyethylene band inner cushion layer; 9. double-layer stainless steel band reinforced layer; 10. the outer bed course of tack polyethylene band; 11. nonwoven interlining bed course; 12. high density polyethylene (HDPE) anticorrosive coat; 13. armouring inner cushion layer; 14. armour; The magnesium alloy steel wire 14a. aluminize; 14b. copper alloy silk; 15. outer jacket.
Embodiment
As shown in Figure 1, a kind of submarine cable that increases ampacity of the present invention, the inner chamber of tin-coated copper helix tube 1 is provided with the hollow oil duct, and the aperture of hollow oil duct is 18mm; It is that the high conduction annealed copper line of 2.57 ± 0.03mm consists of conductor layer 2 that the periphery of tin-coated copper helix tube 1 is arranged with the multifilament diameter, each high conduction annealed copper line circular array successively the spiral close-packed arrays in the periphery of tin-coated copper helix tube 1.
The periphery of conductor layer 2 evenly is surrounded with carbon black paper conductor shield 3, and the periphery of carbon black paper conductor shield 3 evenly is surrounded with oil-filled high-tension cable paper insulation layer 4, and the thickness of oil-filled high-tension cable paper insulation layer 4 is 10 ± 0.1mm.The periphery of oil-filled high-tension cable paper insulation layer 4 is surrounded with carbon black paper insulation screen 5, the thickness of carbon black paper conductor shield 3 and carbon black paper insulation screen 5 is respectively 0.5 ± 0.02mm, all adopt the eclipsed form mode to twine, and the winding direction of carbon black paper conductor shield 3 and carbon black paper insulation screen 5 is opposite.
The periphery of carbon black paper insulation screen 5 is surrounded with copper strips insulation screen 6, and the copper strips thickness of copper strips insulation screen 6 is 0.1 ± 0.01 mm, adopts the eclipsed form mode to twine.
The periphery of copper strips insulation screen 6 is coated with without seam lead alloy sheath 7, adopt lead press to extrude continuously without seam lead alloy sheath 7, seal intact, thickness is 4.0 ~ 4.3mm, is plumbous without the weight content in the seam lead alloy sheath 7: tin: antimony=100:(0.35 ~ 0.45): (0.15 ~ 0.25).
Evenly be coated with low temperature-20 without the outer surface of seam lead alloy sheath 7 and ℃ do not chap, 90 ℃ of pitches that do not drip of high temperature, and periphery is surrounded with tack polyethylene band inner cushion layer 8.
The thickness of tack polyethylene band inner cushion layer 8 is that 0.75 ~ 0.80mm and periphery are coated with double-layer stainless steel band reinforced layer 9, the periphery of double-layer stainless steel band reinforced layer 9 is surrounded with the outer bed course 10 of tack polyethylene band, and the thickness of the outer bed course 10 of tack polyethylene band is that 0.75 ~ 0.80mm and periphery are surrounded with nonwoven interlining bed course 11.
The thickness of nonwoven interlining bed course 11 is that 0.15 ~ 0.20mm and periphery are extruded with high density polyethylene (HDPE) anticorrosive coat 12, the nominal thickness of high density polyethylene (HDPE) anticorrosive coat 12 is 3.5mm, minimum thickness is not less than 90% of nominal thickness, maximum ga(u)ge is not more than 110% of nominal thickness, and the diameter deviation that arbitrary vertical cross-section records is no more than 15%.
The periphery of high density polyethylene (HDPE) anticorrosive coat 12 is coated with the armouring inner cushion layer 13 that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding.
The periphery of armouring inner cushion layer 13 evenly is coated with pitch and is coated with the armour 14 that is formed by aluminize magnesium alloy steel wire 14a and the even interval of copper alloy silk 14b and concentric stranding, and the filament diameter of aluminize magnesium alloy steel wire 14a and the copper alloy silk 14b of armour 14 is 6.0 ± 0.03 mm; Raw material components and the weight content of copper alloy silk are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10, and tensile strength is 260 ~ 345MPa, elongation at break is not less than 25%.
The periphery of armour 14 is coated with the outer jacket 15 that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding, and the periphery of outer jacket 15 evenly is coated with low temperature-20 and ℃ does not chap 90 ℃ of pitches that do not drip of high temperature.The nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm in armouring inner cushion layer 13 and the outer jacket 15, and the direction of lay of armouring inner cushion layer 13 and outer jacket 15 is opposite.
The above-mentioned cable of making is carried out tension stress bending, proof voltage thermal shock, anti-external water pressure and internal oil pressure performance test such as table 1:
Table 1
Below only be the present invention's better possible embodiments, non-so limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of requirement of the present invention.

Claims (10)

1. submarine cable that increases ampacity, it is characterized in that: the inner chamber of tin-coated copper helix tube is provided with the hollow oil duct, the periphery close-packed arrays of described tin-coated copper helix tube has many high conduction annealed copper lines to consist of conductor layer, the periphery of described conductor layer evenly is surrounded with the carbon black paper conductor shield, the periphery of described carbon black paper conductor shield evenly is surrounded with oil-filled high-tension cable paper insulation layer, the periphery of described oil-filled high-tension cable paper insulation layer is surrounded with the carbon black paper insulation screen, the periphery of described carbon black paper insulation screen is surrounded with the copper strips insulation screen, the periphery of described copper strips insulation screen is coated with without the seam lead alloy sheath, described periphery without the seam lead alloy sheath evenly is coated with pitch and is surrounded with tack polyethylene band inner cushion layer, the periphery of described tack polyethylene band inner cushion layer is coated with double-layer stainless steel band reinforced layer, the periphery of described double-layer stainless steel band reinforced layer is surrounded with the outer bed course of tack polyethylene band, the periphery of the outer bed course of described tack polyethylene band is surrounded with the nonwoven interlining bed course, the periphery of described nonwoven interlining bed course is extruded with the high density polyethylene (HDPE) anticorrosive coat, the periphery of described high density polyethylene (HDPE) anticorrosive coat is coated with the armouring inner cushion layer that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding, the periphery of described armouring inner cushion layer evenly is coated with pitch and is coated with the armour that is formed by aluminize magnesium alloy steel wire and the even interval of copper alloy silk and concentric stranding, the periphery of described armour is coated with the outer jacket that is formed by the even interval of polypropylene rope dipping rope made of hemp concentric stranding, and the periphery of outer jacket evenly is coated with pitch.
2. according to claim 1 the submarine cable of increase ampacity is characterized in that the aperture of described hollow oil duct is 18mm; The thickness of oil-filled high-tension cable paper insulation layer is 10 ± 0.1mm.
3. according to claim 1 the submarine cable of increase ampacity is characterized in that the filament diameter of described high conduction annealed copper line is 2.57 ± 0.03mm, circular array successively the spiral close-packed arrays in the periphery of tin-coated copper helix tube.
4. according to claim 1 the submarine cable of increase ampacity, it is characterized in that, the thickness of described carbon black paper conductor shield and carbon black paper insulation screen is respectively 0.5 ± 0.02mm, all adopt the eclipsed form mode to twine, and the winding direction of carbon black paper conductor shield and carbon black paper insulation screen is opposite.
5. according to claim 1 the submarine cable of increase ampacity is characterized in that the copper strips thickness of described copper strips insulation screen is 0.1 ± 0.01 mm, adopts the eclipsed form mode to twine.
6. according to claim 1 the submarine cable of increase ampacity, it is characterized in that, described thickness without the seam lead alloy sheath is 4.0 ~ 4.3mm, is plumbous without the weight content in the seam lead alloy sheath: tin: antimony=100:(0.35 ~ 0.45): (0.15 ~ 0.25).
7. according to claim 1 the submarine cable of increase ampacity is characterized in that the thickness of the outer bed course of described tack polyethylene band inner cushion layer and tack polyethylene band is 0.75 ~ 0.80mm; The thickness of described nonwoven interlining bed course is 0.15 ~ 0.20mm.
8. according to claim 1 the submarine cable of increase ampacity, it is characterized in that, the nominal thickness of described high density polyethylene (HDPE) anticorrosive coat is 3.5mm, minimum thickness is not less than 90% of nominal thickness, maximum ga(u)ge is not more than 110% of nominal thickness, and the diameter deviation that arbitrary vertical cross-section records is no more than 15%.
9. according to claim 1 the submarine cable of increase ampacity is characterized in that the nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm in described armouring inner cushion layer and the outer jacket, and the direction of lay of armouring inner cushion layer and outer jacket is opposite.
10. according to claim 1 the submarine cable of increase ampacity is characterized in that the filament diameter of aluminize magnesium alloy steel wire and the copper alloy silk of described armour is 6.0 ± 0.03 mm; Raw material components and the weight content of copper alloy silk are as follows, copper: iron: lead: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.
CN201210537103.2A 2012-12-13 2012-12-13 Submarine cable with increased current-carrying capacity Expired - Fee Related CN102969071B (en)

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Cited By (11)

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CN103871616A (en) * 2014-02-25 2014-06-18 安徽华成电缆有限公司 Multi-conductor armor cable
CN103956216A (en) * 2014-04-16 2014-07-30 宁海县雁苍山电力设备厂 Photoelectric composite power cable and machining process
CN104240817A (en) * 2014-09-30 2014-12-24 国家电网公司 Submarine power cable with insulating composite layer
CN105225740A (en) * 2013-12-04 2016-01-06 江苏亨通线缆科技有限公司 Multifunction railway traffic digital signal cable
CN105719756A (en) * 2013-12-04 2016-06-29 江苏亨通线缆科技有限公司 Anti-interference flame-retardant data transmission cable for railway traffic
CN105741948A (en) * 2013-12-04 2016-07-06 江苏亨通线缆科技有限公司 Flame-retardant railway signal cable
CN105741927A (en) * 2013-12-04 2016-07-06 江苏亨通线缆科技有限公司 Corrosion-resistant type flame-retardant orbital digital signal cable
WO2019061176A1 (en) * 2017-09-27 2019-04-04 中天科技海缆有限公司 Single-core submarine cable
CN110400659A (en) * 2019-07-31 2019-11-01 福建礼恩科技有限公司 A kind of preparation method of oil-filled submarine cable
WO2020094042A1 (en) * 2018-11-07 2020-05-14 杨峰 Contact wire, contact net, unmanned aerial vehicle, and charging rod
CN112789776A (en) * 2018-09-21 2021-05-11 贝卡尔特公司 Power transmission cable

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CN105741948A (en) * 2013-12-04 2016-07-06 江苏亨通线缆科技有限公司 Flame-retardant railway signal cable
CN105913921A (en) * 2013-12-04 2016-08-31 江苏亨通线缆科技有限公司 High flame retardation track traffic applied data transmission cable
CN105741927A (en) * 2013-12-04 2016-07-06 江苏亨通线缆科技有限公司 Corrosion-resistant type flame-retardant orbital digital signal cable
CN105913922A (en) * 2013-12-04 2016-08-31 江苏亨通线缆科技有限公司 Flame retardation cable for track traffic signal systems
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CN105913929A (en) * 2013-12-04 2016-08-31 江苏亨通线缆科技有限公司 High flame retardation railway signal cable
CN105225740A (en) * 2013-12-04 2016-01-06 江苏亨通线缆科技有限公司 Multifunction railway traffic digital signal cable
CN103871616A (en) * 2014-02-25 2014-06-18 安徽华成电缆有限公司 Multi-conductor armor cable
CN103956216B (en) * 2014-04-16 2016-08-24 象山一山工业设计有限公司 Photoelectricity composite power cable and processing technique
CN103956216A (en) * 2014-04-16 2014-07-30 宁海县雁苍山电力设备厂 Photoelectric composite power cable and machining process
CN104240817A (en) * 2014-09-30 2014-12-24 国家电网公司 Submarine power cable with insulating composite layer
WO2019061176A1 (en) * 2017-09-27 2019-04-04 中天科技海缆有限公司 Single-core submarine cable
CN112789776A (en) * 2018-09-21 2021-05-11 贝卡尔特公司 Power transmission cable
WO2020094042A1 (en) * 2018-11-07 2020-05-14 杨峰 Contact wire, contact net, unmanned aerial vehicle, and charging rod
CN110400659A (en) * 2019-07-31 2019-11-01 福建礼恩科技有限公司 A kind of preparation method of oil-filled submarine cable

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