CN202307273U - Cross-linked polyethylene insulating single core submarine power cable used for ultra-high voltage AC power transmission - Google Patents
Cross-linked polyethylene insulating single core submarine power cable used for ultra-high voltage AC power transmission Download PDFInfo
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- CN202307273U CN202307273U CN2011203687120U CN201120368712U CN202307273U CN 202307273 U CN202307273 U CN 202307273U CN 2011203687120 U CN2011203687120 U CN 2011203687120U CN 201120368712 U CN201120368712 U CN 201120368712U CN 202307273 U CN202307273 U CN 202307273U
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Abstract
The utility model relates to a cross-linked polyethylene insulating single core submarine power cable used for ultra-high voltage AC power transmission, comprising, from inner layer to outer layer, a water-proof conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semiconductive water-proof buffer layer, a metal shielding layer, a plastic reinforced protective layer, a metal wire backflow layer, a binding layer, a metal armored layer and an outer cladding layer. The cross-linked polyethylene insulating single core submarine power cable is reliable in water-proof performance, and excellent in mechanical performance, and the armored metal wire is excellent in corrosion resistance and small in electromagnetic loss, and is sufficient in transient short circuit current capacity. The cross-linked polyethylene insulating single core submarine power cable is used for replacing the prior single core AC submarine power cable with a copper wire sparsely-wound return line and an alloy lead shielding sheath, thereby increasing the water-proof performance of the submarine power cable, and the cross-linked polyethylene insulating single core submarine power cable is especially used for replacing the common low carbon steel wire armoured single core submarine power cable used for ultra-high voltage AC power transmission, which is large in electromagnetic loss, thereby having a remarkable energy saving effect.
Description
Technical field
The utility model relates to a kind of single core sea electric power cable that is used for 220~500kV AC electric power systems.Be used for the long distance of continent and island, island and island, wind energy on the sea generating, big capacity AC energy conveying circuit; Substitute single core that early stage copper wire dredges around+alloy lead screen sheath and exchange sea electric power cable, and single core of replacing common zinc plated mild carbon steel silk armouring exchanges sea electric power cable.Belong to the cable technology field.
Background technology
State's inner high voltage, superhigh pressure exchange the crosslinked polyetylene insulated single core sea electric power cable of the employed 220kV higher level of submarine cable power transmission engineering system at present, the normal structure that adopts Japanese copper wire to dredge wraparound streamline+alloy lead screen sheath+common zinc plated mild carbon steel silk armouring.As shown in Figure 1.
The single core sea electric power cable of the superhigh pressure ac transmission of this structure is to make to have increased difficulty owing to there is copper wire to dredge wraparound streamline a in the inside of alloy lead screen sheath b to blocking water in the plumbous cover of the alloy of sea electric power cable.More not rightly be, it is to stress higher skin protection mechanical performance that the EHV transmission list core of this structure exchanges sea electric power cable, and the outer armouring protective layer c of its cable has adopted common zinc plated mild carbon steel silk sheathed structure.Its reason is that the induced current that the cable shield copper wire is dredged on the wraparound streamline a can be offset the ac transmission electric current deal that single core exchanges the sea electric power cable conductor wire core, makes single core exchange wire armoring magnetic hysteresis loss and the eddy current loss reduction or the disappearance of sea electric power cable.A large amount of sea electric power cable power transmission engineering practices through in recent years prove that this theory is wrong.
Single core sea electric power cable for superhigh pressure ac transmission; Because conductor wire core d and cable shield copper wire are dredged the electric capacity between the wraparound streamline a; The discreteness of capacitance profile between cable shield and the outer steel core armour c (being seawater and the earth); The induced current that single core is exchanged on the thin wraparound streamline a of sea electric power cable screen copper wire can not be offset the ac transmission electric current deal on the conductor wire core; If single core exchanges the outer armouring protection of sea electric power cable and still adopts common low carbon steel wire sheathed structure; Must make single core high power AC transmission of electricity sea electric power cable increase by a heavy magnetic hysteresis loss and an eddy current loss that forms by ferromagnetic material, and then increase the circulation loss of single core interchange sea electric power cable of EHV transmission.A large amount of engineering practices prove; The super high-pressure single core that adopts Japanese heavy in section copper wire to dredge wraparound streamline+common low carbon steel wire sheathed structure design exchanges sea electric power cable; Exchanging sea electric power cable with the single core that adopts nonmagnetic metal silk armouring compares; Because the increase of a series of magnetic loss factors has increased the caloric value of cable inner wire armour, thereby reduced the rated current-carrying capacity that single core wire armouring exchanges the sea electric power cable conductor significantly.Long-term practice proves; The sectional area of cable conduction core is identical; The same laying in the environment, single core interchange sea electric power cable of ordinary steel wire armouring exchanges submarine cable with single core of nonmagnetic metal silk armouring and compares, and the rated current-carrying capacity of cable will hang down 30%--50%.And single core of the three ordinary steel wire armourings in every loop exchanges the every km consume of sea electric power cable and reaches 120~180kW.By 0.5 yuan of every degree electricity, 10 km submarine cable lay lengths are adjusted, and the consume electricity price in 1 year reaches 525.6~788.4 ten thousand yuan.At emphasical low-carbon economy, today of green energy resource,, should avoid adopting the common low carbon steel wire to do the design of single core sea electric power cable metal armouring layer for single core sea electric power cable of high pressure, superhigh pressure ac transmission.
Summary of the invention
The present invention mainly provides a kind of reliable block-water performance that has; Mechanical performance is better; Armouring wire corrosion resistance and good; Electromagnetic consumable is little, is fit to be applied to the plumbous cover+copper strap wire return wire of alloy+nonmagnetic metal silk armouring list core sea electric power cable of superhigh pressure ac transmission, is used for substituting early stage copper wire and dredges the single core interchange sea electric power cable around+alloy lead screen sheath; It is very big particularly to replace electromagnetic consumable, is used for the common low carbon steel wire armouring list core sea electric power cable of superhigh pressure ac transmission.
The purpose of the utility model is achieved in that a kind of ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable, and cable comprises water-blocking conductor, conductor shield, insulating barrier, insulation screen, semiconductive water-blocking buffer layer, metal screen layer, plastics enhance protection layer, metal wire reflux layer, binding layer, metal armouring layer and the serving of cable successively respectively from internal layer to skin.
Be provided with wrapped semiconductive waterstop between water-blocking conductor and the conductor shield, wrapped semiconductive waterstop and semiconductive shielding layer are united the formation conductor shield.
The semiconductive water-blocking buffer layer is blocked water by wrapped semiconductive, and zone of swelling constitutes.
Metal screen layer is made up of the alloy lead sleeve.
Described insulating barrier adopts the ultrapurification cross-linked polyethylene insulating material to process.
Described conductor shield, insulation screen adopt ultra-smooth semiconductive polyolefin shielding material to make.
Described plastics enhance protection layer adopts the manufacturing of semiconductive polyolefin plastics.
The metal armouring layer adopts many nonmagnetic metal alloy silks by circumferential arrangement to constitute or adopts double-deck nonmagnetic metal silk armouring protection structure.
Described double-deck nonmagnetic metal silk armouring protection structure is made up of the first nonmagnetic metal silk armour, binding layer, the second nonmagnetic metal silk armour.
In the first nonmagnetic metal silk armour, can be provided with the compound loose casing fiber optic of stainless steel unit, power cable at the bottom of the formation ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea.
Its internal layer of the compound loose casing fiber optic of described stainless steel unit to skin respectively is the data communication monomode fiber; Fill optical fiber cream, plastics pine sleeve pipe, stainless loose sleeve pipe; Between plastics pine sleeve pipe and stainless loose sleeve pipe, factice for filling is arranged, plastics enhance protection layer is arranged outside the stainless loose sleeve pipe.
The ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable that the utility model provides has reliable block-water performance, mechanical performance preferably, and armouring wire corrosion resistance and good, electromagnetic consumable is little, and enough transient state short-circuit current capacity are arranged.Be used for substituting single core that early stage copper wire dredges around+alloy lead screen sheath and exchange sea electric power cable, can improve the block-water performance of submarine cable; Electromagnetic consumable is very big especially for replacing, and is used for the common low carbon steel wire armouring list core sea electric power cable of superhigh pressure ac transmission, has remarkable energy saving effect.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the crosslinked polyetylene insulated single core sea electric power cable structure chart of 220kV higher level in the prior art.
Fig. 2 is the structural representation of the utility model.
Fig. 3 is that the utility model adopts double-deck non magnetic circular metal silk sheathed structure sketch map.
Fig. 4 is that the utility model adopts double-deck non magnetic circular metal silk armouring and increased the compound loose casing fiber optic of stainless steel unit, power cable structural representation at the bottom of the ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea of formation.
Fig. 5 is the structural representation of the compound loose casing fiber optic of stainless steel unit in the utility model.
Embodiment
Shown in Fig. 1-5, power cable at the bottom of a kind of crosslinked polyetylene insulated single core sea electric power cable that is used for superhigh pressure ac transmission and the single core photoelectric composite sea.Cable comprises water-blocking conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water-blocking buffer layer 5, metal screen layer 6, plastics enhance protection layer 7, metal wire reflux layer 8, binding layer 9, metal armouring layer 10 and the serving 11 of cable successively respectively from internal layer to skin.
Be provided with wrapped semiconductive waterstop between water-blocking conductor 1 and the conductor shield 2, wrapped semiconductive waterstop and semiconductive shielding layer are united formation conductor shield 2.
Semiconductive water-blocking buffer layer 5 is blocked water by wrapped semiconductive, and zone of swelling constitutes.
Described insulating barrier 3 adopts the ultrapurification cross-linked polyethylene insulating material to process.
Described conductor shield 2, insulation screen 4 adopt ultra-smooth semiconductive polyolefin shielding material to make.
Described plastics enhance protection layer 7 adopts the manufacturing of semiconductive polyolefin plastics.
Described double-deck nonmagnetic metal silk armouring protection structure is made up of the first nonmagnetic metal silk armour 12, binding layer 13, second a nonmagnetic metal silk armour 14.
In the first nonmagnetic metal silk armour 12, can also be provided with the compound loose casing fiber optic of stainless steel unit 15, power cable at the bottom of the formation ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea.
The compound loose casing fiber optic of described stainless steel unit 15 its internal layer to skins respectively are data communication monomode fiber 16; Fill optical fiber cream 17; Plastics pine sleeve pipe 18; Stainless loose sleeve pipe 19 has factice for filling 20 between plastics pine sleeve pipe 18 and stainless loose sleeve pipe 19, plastics enhance protection layer 21 is arranged outside stainless loose sleeve pipe 19.
Specific as follows:
Embodiment 1: as shown in Figure 2; A kind of plumbous cover+copper strap wire return wire of alloy+nonmagnetic metal silk armouring list core sea electric power cable that is used for superhigh pressure ac transmission; Water-blocking conductor 1 by many copper conductor layer-strandings, press and constitute, all be embedded with the semiconductive waterstop between every layer conductor.Be provided with wrapped semiconductive waterstop between water-blocking conductor 1 and the conductor shield 2, wrapped semiconductive waterstop and semiconductive shielding layer are united formation conductor shield 2.Between the insulation screen 4 and lead sleeve metal screen layer 6 of cable core, be provided with the wrapped semiconductive semiconductive water-blocking buffer layer 5 that zone of swelling constitutes that blocks water.The alloy lead sleeve that metal screen layer 6 is good by airtight performance, antiseptic property is good constitutes, and the alloy lead sleeve is outside equipped with plastics enhance protection layer 7.Above-mentioned each layer setting is united the water blocking structure that has formed sea electric power cable.In case the metal screen layer 6 unexpected damage and water inflows that sea electric power cable alloy lead sleeve is processed; Each layer semiconductive zone of swelling water-swellable that blocks water plays a role; Delay and stop the further immersion of seawater; Reduce the length that seawater soaks harmful sea electric power cable, make things convenient for the repairing work after the submarine cable accident and reduce the loss.
Described insulating barrier 3 adopts the manufacturing of ultrapurification cross-linked polyethylene insulating material; Described conductor shield 2, insulation screen 4 adopt ultra-smooth semiconductive polyolefin shielding material to make.Conductor shield 2, insulating barrier 3, insulation screen 4 adopt the three-layer co-extruded cross-linking cable production line once to extrude and make completion.
In the outside of semiconductive water-blocking buffer layer 5 is metal screen layer 6, and the metal screen layer 6 of sea electric power cable generally all adopts alloy lead sleeve metal screen layer structure because the anticorrosion requirement is arranged.Described plastics enhance protection layer 7 can be used the manufacturing of semiconductive polyolefin plastics.Described alloy lead sleeve screen and plastics enhance protection layer 7 are united and are constituted that submarine cable radially blocks water, anti-corrosion structure.Simultaneously, this one deck plastics strengthen 2~3 times of the fatigue durabilitys that sheath 7 can improve cable lead pipe sheath, and this point is very important to being in the strong ocean power cable laying of surge impact.
Described metal wire reflux layer 8 can adopt the non-ferrous metal lenticular wire to constitute.Described submarine cable metal armouring layer 10 is made up of many nonmagnetic metal alloy silks of circumferential arrangement.Non-ferrous metal lenticular wire layer and nonmagnetic metal alloy silk armour are united the outer protection metal armouring layer that has constituted sea electric power cable again.
Described binding layer 9 can use the plastics adhesive tape to constitute.With the outside of non-ferrous metal lenticular wire formation metal wire reflux layer 8, can adopt the plastics adhesive tape that metal lenticular wire layer is bundled, be used for preventing submarine cable in manufacturing, coiling transportation, laid processes, metal lenticular wire layer structure takes place loose and the displacement of jumping nation.The external packets of submarine cable metal armouring layer 10 is wrapped with serving 11.It is anticorrosion outer by structure that described serving 11 can adopt polypropylene (PP) rope+bituminizing to mix.
For single core of the superhigh pressure ac transmission in the rivers that are laid in the land fresh water environment, lake power cable under water, non-ferrous metal lenticular wire and non magnetic armouring wire can adopt higher mechanical strength, the aldray material manufacture of low resistivity.Can satisfy each item electrical property and the mechanical performance requirement of cable design like this, the power cable manufacturing cost is also lower under water for aluminum-magnesium-silicon alloy wire armoured single core simultaneously.
For the metal sheath design of the single core sea electric power cable of 220~500kV level of superhigh pressure ac transmission, its non-ferrous metal lenticular wire can adopt higher mechanical strength, antiseptic property is good, resistivity is less copper alloy lenticular wire.Outer armouring can adopt the special-purpose materials such as anticorrosion non-magnetic alloy steel wire of single core sea electric power cable armouring.
The metallic shield of cable is united by described alloy lead sleeve, semiconductive plastics enhance protection layer, non-ferrous metal lenticular wire and is constituted.Because the non-ferrous metal lenticular wire has less resistance, has reduced the intrusion wave reflection auxiliary voltage of submarine cable, has improved the anti-thunderbolt transient state short-circuit current capacity of superhigh pressure submarine cable.And can suitably reduce the supplementary load loss that superhigh pressure exchanges the metallic sheath circulation generation of single core submarine cable.
Embodiment 2: that shown in Figure 3 is the another one embodiment of the utility model, with the main distinction of Fig. 2 scheme be that the armouring protective layer of sea electric power cable has adopted double-deck non magnetic circular metal silk sheathed structure.
At a kind of single-core crosslinked polyethylene insulation of high pressure, superhigh pressure ac transmission, double-deck nonmagnetic metal silk armouring sea electric power cable of being used for shown in Figure 3; Plastics enhance protection layer 7 can adopt the manufacturing of semiconductive polyolefin plastics, as preferably adopting the special-purpose modification semiconductive medium density polyethylene manufacturing of sea electric power cable.The plastics enhance protection layer of processing with the semiconductive polyolefin plastics 7; Except satisfying the mechanical protection effect of the metal screen layer 6 that sea electric power cable alloy lead sleeve is processed; And the alloy lead sleeve screen of cable had good corrosion-resisting function, and can satisfy the continuous requirement of particular electrical of high pressure, super high-pressure single core sea electric power cable simultaneously.
The described first nonmagnetic metal silk armour 12.In order to satisfy the electrical property designing requirement that the super high-pressure single core exchanges sea electric power cable; The first nonmagnetic metal silk armour 12 of bonding core sea electric power cable has lower resistance, and first non magnetic armour 12 wires can adopt circular copper wire, copper alloy circle line.To the rivers that are laid in the land fresh water environment, single core power cable under water in the lake, can adopt the aldray circle line of higher mechanical strength, low resistivity to do armoring material.
The second nonmagnetic metal silk armour 14 of single core sea electric power cable can adopt and the 12 commaterial manufacturings of the first nonmagnetic metal silk armour, also can adopt than high-tensile, and other nonmagnetic alloy silk wear-resistant, corrosion resistance and good is made.Internal layer armouring wire adopts the nonferrous materials that conducts electricity very well, and outer armouring adopts the non-preferably magnetic alloy silk of mechanical strength, can make the armour structure of single core sea electric power cable have comprehensive mechanical performance and electric property preferably.Can adopt the special-purpose anticorrosion non-magnetic alloy steel wire manufacturing of single core sea electric power cable armouring as preferred outer armouring.
Single core sea electric power cable has adopted double-deck nonmagnetic metal silk sheathed structure that better electrical connection effect and electric screening action are arranged.The manufacturing process of the double layer of metal silk armour of single core sea electric power cable, it is wrapped generally to be designed to incorgruous armouring, if the first non magnetic armour 12 adopts the left-hand armourings wrapped, 14 of the second nonmagnetic metal silk armours select the dextrad armouring wrapped.The double layer of metal silk armour of sea electric power cable is designed to incorgruous wrapped pattern has tensile property preferably, and higher antisurge, anti-twist destructive characteristics.This point is very important for being in the strong ocean power cable laying of surge impact.
Embodiment 3: Fig. 4 adds power cable at the bottom of the ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea of the compound loose casing fiber optic of stainless steel unit.As long as any 1~2 circular armouring wire in the first nonmagnetic metal silk armour 12 among the embodiment 2 is removed; Be replaced as the compound loose casing fiber optic of the less stainless steel of special diameter unit 15, can constitute a kind of power cable at the bottom of the single-core crosslinked polyethylene insulation of superhigh pressure ac transmission, double-deck nonmagnetic metal silk armouring, the photoelectric composite sea that is used for.
Wherein internal layer to the skin of the compound loose casing fiber optic of stainless steel unit 15 comprises data communication monomode fiber 16 successively respectively; Fill optical fiber cream 17; Highstrenghtpiston pine sleeve pipe 18; Stainless loose sleeve pipe 19 has factice for filling 20 between highstrenghtpiston's pine sleeve pipe 18 and the stainless loose sleeve pipe 19, and highstrenghtpiston's enhance protection layer 21 is arranged outside the stainless loose sleeve pipe.The compound loose casing fiber optic whole unit diameter of stainless steel is slightly smaller than 6mm, is about about 5.5mm.
Claims (9)
1. crosslinked polyetylene insulated single core sea electric power cable that is used for superhigh pressure ac transmission is characterized in that: cable from internal layer to outer water-blocking conductor (1), conductor shield (2), insulating barrier (3), insulation screen (4), semiconductive water-blocking buffer layer (5), metal screen layer (6), plastics enhance protection layer (7), metal wire reflux layer (8), binding layer (9), metal armouring layer (10) and the serving (11) that comprises cable successively respectively.
2. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 1; It is characterized in that: be provided with wrapped semiconductive waterstop between water-blocking conductor (1) and the conductor shield (2), wrapped semiconductive waterstop and semiconductive shielding layer are united formation conductor shield (2).
3. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 1, it is characterized in that: metal screen layer (6) is made up of the alloy lead sleeve.
4. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 1 is characterized in that: described insulating barrier (3) adopts the ultrapurification cross-linked polyethylene insulating material to process.
5. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 1 is characterized in that: described plastics enhance protection layer (7) adopts the manufacturing of semiconductive polyolefin plastics.
6. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 1 is characterized in that: metal armouring layer (10) adopts many nonmagnetic metal alloy silks by circumferential arrangement to constitute or adopts double-deck nonmagnetic metal silk armouring protection structure.
7. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 6 is characterized in that: described double-deck nonmagnetic metal silk armouring protection structure is made up of the first nonmagnetic metal silk armour (12), binding layer (13), the second nonmagnetic metal silk armour (14).
8. ultra-high voltage cross-linking polyethylene insulation list core sea electric power cable according to claim 6; It is characterized in that: in the first nonmagnetic metal silk armour (12), can be provided with the compound loose casing fiber optic of stainless steel unit (15), power cable at the bottom of the formation ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea.
9. power cable at the bottom of the ultra-high voltage cross-linking polyethylene insulation list core photoelectric composite sea according to claim 8; It is characterized in that: its internal layer of the compound loose casing fiber optic of described stainless steel unit (15) to skin respectively is data communication monomode fiber (16); Fill optical fiber cream (17); Plastics pine sleeve pipe (18); Stainless loose sleeve pipe (19) has factice for filling (20) between plastics pine sleeve pipe (18) and stainless loose sleeve pipe (19), plastics enhance protection layer (21) is arranged outside stainless loose sleeve pipe (19).
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CN2011203687120U CN202307273U (en) | 2011-09-29 | 2011-09-29 | Cross-linked polyethylene insulating single core submarine power cable used for ultra-high voltage AC power transmission |
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CN2011203687120U CN202307273U (en) | 2011-09-29 | 2011-09-29 | Cross-linked polyethylene insulating single core submarine power cable used for ultra-high voltage AC power transmission |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105556619A (en) * | 2013-07-10 | 2016-05-04 | 普睿司曼股份公司 | Method and armoured power cable for transporting alternate current |
CN105609177A (en) * | 2016-03-03 | 2016-05-25 | 无锡市光环电缆有限公司 | Improved underwater power cable |
CN106098238A (en) * | 2016-08-08 | 2016-11-09 | 中天科技海缆有限公司 | 500kV cross-linked polyethylene insulating submarine power cable |
CN106128583A (en) * | 2016-08-08 | 2016-11-16 | 中天科技海缆有限公司 | The crosslinked polyetylene insulated optical fiber composite submarine power cable of 500kV |
CN106298016A (en) * | 2016-09-29 | 2017-01-04 | 山东华东线缆集团有限公司 | Press down Shui Shu to block water Intertidal zone cable |
CN109243680A (en) * | 2018-09-10 | 2019-01-18 | 山东希尔电缆有限公司 | Low armouring resistance charge bearing detecting cable |
CN110828052A (en) * | 2019-11-15 | 2020-02-21 | 中天科技海缆有限公司 | Direct current submarine cable |
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2011
- 2011-09-29 CN CN2011203687120U patent/CN202307273U/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105556619A (en) * | 2013-07-10 | 2016-05-04 | 普睿司曼股份公司 | Method and armoured power cable for transporting alternate current |
CN105556619B (en) * | 2013-07-10 | 2017-07-21 | 普睿司曼股份公司 | Method and armoured power cable for transporting alternating current |
US10438722B2 (en) | 2013-07-10 | 2019-10-08 | Prysmian S.P.A. | Method and armoured power cable for transporting alternate current |
CN105609177A (en) * | 2016-03-03 | 2016-05-25 | 无锡市光环电缆有限公司 | Improved underwater power cable |
CN106098238A (en) * | 2016-08-08 | 2016-11-09 | 中天科技海缆有限公司 | 500kV cross-linked polyethylene insulating submarine power cable |
CN106128583A (en) * | 2016-08-08 | 2016-11-16 | 中天科技海缆有限公司 | The crosslinked polyetylene insulated optical fiber composite submarine power cable of 500kV |
CN106298016A (en) * | 2016-09-29 | 2017-01-04 | 山东华东线缆集团有限公司 | Press down Shui Shu to block water Intertidal zone cable |
CN109243680A (en) * | 2018-09-10 | 2019-01-18 | 山东希尔电缆有限公司 | Low armouring resistance charge bearing detecting cable |
CN110828052A (en) * | 2019-11-15 | 2020-02-21 | 中天科技海缆有限公司 | Direct current submarine cable |
WO2021093085A1 (en) * | 2019-11-15 | 2021-05-20 | 中天科技海缆股份有限公司 | Dc submarine cable |
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Effective date of registration: 20161009 Address after: 443000 Hubei city of Yichang Province in Xiaoting District Democratic Road No. 1 Patentee after: Yichang communication cable Co. Ltd. Address before: 443000 Hubei city of Yichang Province in Xiaoting District Democratic Road No. 1 Patentee before: Yichang Lianbang Cable Co., Ltd. Patentee before: Zheng Yunyan |
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Granted publication date: 20120704 |
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CX01 | Expiry of patent term |