CN102969071B - Submarine cable with increased current-carrying capacity - Google Patents
Submarine cable with increased current-carrying capacity Download PDFInfo
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- CN102969071B CN102969071B CN201210537103.2A CN201210537103A CN102969071B CN 102969071 B CN102969071 B CN 102969071B CN 201210537103 A CN201210537103 A CN 201210537103A CN 102969071 B CN102969071 B CN 102969071B
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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
Technical field
The present invention relates to a kind of power cable, particularly a kind of submarine cable increasing ampacity.
Background technology
Along with the exploitation of marine energy, submarine cable as seabed delivery of electrical energy current-carrying device uses more and more, technical requirement is also more and more higher, especially cable machinery physical property and excellent electric properties is required, there is larger ampacity, excellent water-impervious, seawater corrosion resistance, resistance to external water pressure, proof voltage thermal shock and tension bending property, long service life, reliability is high.Seawater corrosion resistance more paid close attention to by submarine cable of the prior art, tension drags mechanical performance and water-impervious performance, and have ignored requirement cable to 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, semiconductive polyethylene anticorrosive coating is provided with between lead cover and inner covering, the induced potential making lead put generation is directly eliminated by semiconductive polyethylene anticorrosive coating ground connection, and does not need to destroy inner covering.Its construction of cable announced is simple, convenient processing and manufacture, but this structural cable ampacity is lower, and tension is bending and tension drags mechanical performance generally, especially in armour, the anti-seawater corrosion performance of aluminum-alloy wire is very poor, thus 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 seabed; comprise arrange from inside to outside 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 armouring external protection; core is made up of steel wire and wire and aluminum conductor; armour is made up of galvanized steel wire rope, is being provided with every magnetic aluminum-alloy wire between galvanized steel wire rope.The invention provides a kind of low cost of manufacture, tensile strength is large and electric conductivity is qualified sea electric power cable.But it adopts steel combined with aluminum twisted wire as conductor, adopt zinc-coated wire and aluminum-alloy wire as armour, because the Seawater durability of aluminium is poor, permanent use can cause aluminum steel to weaken useful life by corrosion, bring use safety hidden danger, no longer will have separated magnetic effect after the aluminum-alloy wire corrosion and ageing especially in armouring, now wire armoring produces eddy current loss on single-core cable, cause cable current capacity to decline, 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 increasing ampacity is provided, there is larger ampacity, excellent water-impervious, seawater corrosion resistance, resistance to external water pressure, proof voltage thermal shock and tension bending property, long service life, reliability is high.
For realizing above object, a kind of submarine cable increasing ampacity provided by the present invention, the inner chamber of tin-coated copper helix tube is provided with hollow oil duct, the periphery close-packed arrays of described tin-coated copper helix tube has many high connductivity annealed copper lines to form conductor layer, the periphery of described conductor layer is evenly surrounded with carbon black paper conductor shield, the periphery of described carbon black paper conductor shield is evenly surrounded with oil-filled high-tension cable paper insulating layer, the periphery of described oil-filled high-tension cable paper insulating layer is surrounded with carbon black paper insulation screen, the periphery of described carbon black paper insulation screen is surrounded with copper strips insulation screen, the periphery of described copper strips insulation screen is coated with without seam lead alloy sheath, the described periphery without seam lead alloy sheath is evenly coated with pitch and is surrounded with tack polyethylene inner cushion layer, the periphery of described tack polyethylene 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, the periphery of the outer bed course of described tack polyethylene is surrounded with nonwoven interlining bed course, the periphery of described nonwoven interlining bed course is extruded with high density polyethylene (HDPE) anticorrosive coat, the periphery of described high density polyethylene (HDPE) anticorrosive coat is coated with the armouring inner cushion layer being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals, the periphery of described armouring inner cushion layer is evenly coated with pitch and is coated with by aluminizing magnesium alloy steel wire and copper alloy silk uniform intervals and the armour of concentric stranding, the periphery of described armour is coated with the outer jacket being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals, the periphery of outer jacket is evenly coated with pitch.
Relative to prior art, the present invention achieves following beneficial effect: tin-coated copper helix tube has higher elasticity and conformality, the fuel feeding of satisfied large length cables can be guaranteed, when cable temperature raises, light viscosity oil impregnating agent expanded by heating, the impregnating agent expanded out flows in dipping ancillary equipment, when cable temperature declines through hollow oil duct, impregnating agent shrinks, and the impregnating agent in dipping ancillary equipment carries out dipping through hollow oil duct to oil-filled high-tension cable paper insulating layer and supplements; Avoid the air gap in insulating barrier to produce by oil duct dipping, and prevent from cable, forming too high pressure, thus greatly can 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, and due to the kelvin effect of electric current, ampacity is large, and power consumption penalty is little, and conductive surface electric current distribution is even, and circuit is reliable.Carbon black paper conductor shield has semiconductive performance, the air gap formed between cable conductor monofilament surface and oil-filled high-tension cable paper insulating layer can be eliminated, with conductor equipotential and with insulating barrier good contact, thus avoid, between conductor and insulating barrier, partial discharge occurs.Oil-filled high-tension cable paper insulating layer can make cable operating temperature improve by the impregnating agent supplemented in impregnating equipment, and ampacity increases.Carbon black paper insulation screen has semiconductive performance, can eliminate the air gap that formed between cable insulation surface and sheath, with sheath equipotential and with insulating barrier good contact, thus avoid, between insulation and sheath, partial discharge occurs.Copper strips insulation screen passes through capacitance current when cable normally runs; When system is short-circuited, as the passage of short circuit current, also play the effect of electric field shielding simultaneously.Both can as earthing conductor hop short circuit current without seam lead alloy sheath, also can be used as waterproof sheath simultaneously and ensure that cable core conductor is from the wet invasion and attack of moisture water, the pitch of coating can improve sea water corrosion resistant.Tack polyethylene 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 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 Exterior cable, plays protective action to lead alloy sheath simultaneously, and the plumbous gold of protection closes the water-tight performance of sheath.Interior external member can well be combined as a whole with nonwoven interlining bed course by the outer bed course of tack polyethylene, and prevents from the inside double-layer stainless steel band reinforced layer from there is edge projection stabbing anticorrosive coat, and even the intensity of anticorrosive coat outside reducing.Magnesium alloy steel wire of aluminizing can well strengthen mechanical tensile strength, and protection cable is not mechanically damaged, and has excellent anti-seawater corrosion performance; Copper alloy silk both every magnetic, can avoid the loss that eddy current magnetic hysteresis causes, and increased ampacity, and mechanical strength is larger than copper again, and cost is then cheap than copper, and has excellent anti-seawater corrosion performance, and the long-term security for cable runs and benefits.Polypropylene rope interval dipping rope made of hemp coating pitch can improve sea water corrosion resistant greatly 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 insulating layer is 10 ± 0.1mm.
As preferred version of the present invention, the filament diameter of described high connductivity annealed copper line is 2.57 ± 0.03mm, and circular array successively spiral is arranged closely 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 adopt eclipsed form mode to be wound around, and the winding direction of carbon black paper conductor shield and carbon black paper insulation screen is contrary.
As preferred version of the present invention, the copper strips thickness of described copper strips insulation screen is 0.1 ± 0.01 mm, adopts eclipsed form mode to be wound around.
As preferred version of the present invention, the described thickness without seam lead alloy sheath is 4.0 ~ 4.3mm, is plumbous: tin: antimony=100:(0.35 ~ 0.45 without the weight content in seam lead alloy sheath): (0.15 ~ 0.25).This is intact without the sealing of seam lead alloy sheath, both as earthing conductor hop short circuit current, also can be used as waterproof sheath simultaneously and ensure that cable core conductor is from the wet invasion and attack of moisture water.
As preferred version of the present invention, the thickness of described tack polyethylene inner cushion layer and the outer bed course of tack polyethylene 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, in described armouring inner cushion layer and outer jacket, the nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm, and the direction of lay of armouring inner cushion layer and outer jacket is contrary.
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: plumbous: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.Copper alloy silk both every magnetic, can avoid the loss that eddy current magnetic hysteresis causes, and increased ampacity, and mechanical strength is larger than copper again, and cost is then cheap than copper, and has excellent anti-seawater corrosion performance, and the long-term security for cable runs and benefits.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation increasing the submarine cable of ampacity of the present invention.
In figure: 1. tin-coated copper helix tube; 2. conductor layer; 3. carbon black paper conductor shield; 4. oil-filled high-tension cable paper insulating layer; 5. carbon black paper insulation screen; 6. copper strips insulation screen; 7. without seam lead alloy sheath; 8. tack polyethylene inner cushion layer; 9. double-layer stainless steel band reinforced layer; 10. the outer bed course of tack polyethylene; 11. nonwoven interlining bed courses; 12. high density polyethylene (HDPE) anticorrosive coats; 13. armouring inner cushion layers; 14. armours; 14a. aluminizes magnesium alloy steel wire; 14b. copper alloy silk; 15. outer jackets.
Embodiment
As shown in Figure 1, a kind of submarine cable increasing ampacity of the present invention, the inner chamber of tin-coated copper helix tube 1 is provided with hollow oil duct, and the aperture of hollow oil duct is 18mm; The periphery of tin-coated copper helix tube 1 is arranged with the high connductivity annealed copper line formation conductor layer 2 that multifilament diameter is 2.57 ± 0.03mm, and each high connductivity annealed copper line circular array successively spiral is arranged closely in the periphery of tin-coated copper helix tube 1.
The periphery of conductor layer 2 is evenly surrounded with carbon black paper conductor shield 3, and the periphery of carbon black paper conductor shield 3 is evenly surrounded with oil-filled high-tension cable paper insulating layer 4, and the thickness of oil-filled high-tension cable paper insulating layer 4 is 10 ± 0.1mm.The periphery of oil-filled high-tension cable paper insulating 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 eclipsed form mode to be wound around, and the winding direction of carbon black paper conductor shield 3 and carbon black paper insulation screen 5 is contrary.
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 eclipsed form mode to be wound around.
The periphery of copper strips insulation screen 6 is coated with without seam lead alloy sheath 7, lead press is adopted to extrude continuously without seam lead alloy sheath 7, seal intact, thickness is 4.0 ~ 4.3mm, is plumbous: tin: antimony=100:(0.35 ~ 0.45 without the weight content in seam lead alloy sheath 7): (0.15 ~ 0.25).
Outer surface without seam lead alloy sheath 7 is evenly coated with low temperature-20 DEG C and does not chap, and the pitch dripped does not occur high temperature 90 DEG C, and periphery is surrounded with tack polyethylene inner cushion layer 8.
The thickness of tack polyethylene inner cushion layer 8 is 0.75 ~ 0.80mm and periphery is 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, and the thickness of the outer bed course 10 of tack polyethylene is 0.75 ~ 0.80mm and periphery is surrounded with nonwoven interlining bed course 11.
The thickness of nonwoven interlining bed course 11 is 0.15 ~ 0.20mm and periphery is 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 being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals.
The periphery of armouring inner cushion layer 13 is evenly coated with pitch and is coated with by aluminizing magnesium alloy steel wire 14a and copper alloy silk 14b uniform intervals and the armour 14 of 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: plumbous: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10, tensile strength is 260 ~ 345MPa, and elongation at break is not less than 25%.
The periphery of armour 14 is coated with the outer jacket 15 being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals, and the periphery of outer jacket 15 is evenly coated with low temperature-20 DEG C and does not chap, and the pitch dripped does not occur high temperature 90 DEG C.In armouring inner cushion layer 13 and outer jacket 15, the nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm, and the direction of lay of armouring inner cushion layer 13 and outer jacket 15 is contrary.
The above-mentioned cable made is carried out that tension stress is bending, proof voltage thermal shock, resistance to external water pressure and internal oil pressure performance test is as table 1:
Table 1
These are only the better possible embodiments of the present invention, non-ly therefore 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 application claims.
Claims (2)
1. one kind increases the submarine cable of ampacity, it is characterized in that: the inner chamber of tin-coated copper helix tube is provided with hollow oil duct, the periphery close-packed arrays of described tin-coated copper helix tube has many high connductivity annealed copper lines to form conductor layer, the periphery of described conductor layer is evenly surrounded with carbon black paper conductor shield, the periphery of described carbon black paper conductor shield is evenly surrounded with oil-filled high-tension cable paper insulating layer, the periphery of described oil-filled high-tension cable paper insulating layer is surrounded with carbon black paper insulation screen, the periphery of described carbon black paper insulation screen is surrounded with copper strips insulation screen, the periphery of described copper strips insulation screen is coated with without seam lead alloy sheath, the described periphery without seam lead alloy sheath is evenly coated with pitch and is surrounded with tack polyethylene inner cushion layer, the periphery of described tack polyethylene 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, the periphery of the outer bed course of described tack polyethylene is surrounded with nonwoven interlining bed course, the periphery of described nonwoven interlining bed course is extruded with high density polyethylene (HDPE) anticorrosive coat, the periphery of described high density polyethylene (HDPE) anticorrosive coat is coated with the armouring inner cushion layer being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals, the periphery of described armouring inner cushion layer is evenly coated with pitch and is coated with by aluminizing magnesium alloy steel wire and copper alloy silk uniform intervals and the armour of concentric stranding, the periphery of described armour is coated with the outer jacket being flooded rope made of hemp concentric stranding by polypropylene rope uniform intervals, the periphery of outer jacket is evenly coated with pitch, 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: plumbous: zinc=(89.0 ~ 91.0): (0.03 ~ 0.05): (0.01 ~ 0.05): 10.
2. the submarine cable of increase ampacity according to claim 1, is characterized in that, the aperture of described hollow oil duct is 18mm; The thickness of oil-filled high-tension cable paper insulating layer is 10 ± 0.1mm.
3. the submarine cable of increase ampacity according to claim 1, is characterized in that, the filament diameter of described high connductivity annealed copper line is 2.57 ± 0.03mm, and circular array successively spiral is arranged closely in the periphery of tin-coated copper helix tube.
4. the submarine cable of increase ampacity according to claim 1, 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 eclipsed form mode to be wound around, and the winding direction of carbon black paper conductor shield and carbon black paper insulation screen is contrary.
5. the submarine cable of increase ampacity according to claim 1, is characterized in that, the copper strips thickness of described copper strips insulation screen is 0.1 ± 0.01 mm, adopts eclipsed form mode to be wound around.
6. the submarine cable of increase ampacity according to claim 1, it is characterized in that, the described thickness without seam lead alloy sheath is 4.0 ~ 4.3mm, is plumbous: tin: antimony=100:(0.35 ~ 0.45 without the weight content in seam lead alloy sheath): (0.15 ~ 0.25).
7. the submarine cable of increase ampacity according to claim 1, is characterized in that, the thickness of described tack polyethylene inner cushion layer and the outer bed course of tack polyethylene is 0.75 ~ 0.80mm; The thickness of described nonwoven interlining bed course is 0.15 ~ 0.20mm.
8. the submarine cable of increase ampacity according to claim 1, 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. the submarine cable of increase ampacity according to claim 1, is characterized in that, in described armouring inner cushion layer and outer jacket, the nominal diameter of polypropylene rope and the dipping rope made of hemp is respectively 2.5mm, and the direction of lay of armouring inner cushion layer and outer jacket is contrary.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210537103.2A CN102969071B (en) | 2012-12-13 | 2012-12-13 | Submarine cable with increased current-carrying capacity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210537103.2A CN102969071B (en) | 2012-12-13 | 2012-12-13 | Submarine cable with increased current-carrying capacity |
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| CN102969071A CN102969071A (en) | 2013-03-13 |
| CN102969071B true CN102969071B (en) | 2015-03-25 |
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| 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 |
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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 |
| 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 |
| CN104240817A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Submarine power cable with insulating composite layer |
| CN107301896B (en) * | 2017-08-07 | 2023-09-26 | 安徽徽宁电器仪表集团有限公司 | Multicore antitorque control cable |
| CN109559846B (en) * | 2017-09-27 | 2024-04-19 | 中天科技海缆股份有限公司 | Single-core submarine cable |
| EP3853954A1 (en) * | 2018-09-21 | 2021-07-28 | NV Bekaert SA | Electric power transmission cable |
| CN111161916A (en) * | 2018-11-07 | 2020-05-15 | 杨峰 | Contact wire, contact net, unmanned aerial vehicle and pole that charges |
| CN110400659B (en) * | 2019-07-31 | 2021-01-22 | 福建礼恩科技有限公司 | Preparation method of oil-filled submarine cable |
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