CN105931745A - Submarine high-voltage cable with relatively good shielding performance - Google Patents

Submarine high-voltage cable with relatively good shielding performance Download PDF

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Publication number
CN105931745A
CN105931745A CN201610397375.5A CN201610397375A CN105931745A CN 105931745 A CN105931745 A CN 105931745A CN 201610397375 A CN201610397375 A CN 201610397375A CN 105931745 A CN105931745 A CN 105931745A
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parts
layer
outside
conductor
coated
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不公告发明人
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/14—Submarine cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021—Features relating to screening tape per se
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Abstract

The invention belongs to the technical field of wire cables and particularly relates to a submarine high-voltage cable. The submarine high-voltage cable is composed of a conductive unit, a metal shielding layer, a waterproof layer, an internal sheath, an armor layer, an external sheath and an external sheath protective layer which are arranged in sequence from inside to outside, wherein the conductive unit is composed of a conductor, an insulated layer, an insulated shielding layer and a conductor protective layer; on any cross section, the circle center of the conductor coincides with that of the insulated layer; the diameter of the insulated layer is 1.5-5 times that of the conductor, and a minimum value of the thickness of the insulated layer is 1.5mm; filling rope sets and reinforcing part sets are alternately distributed outside the internal sheath and all cling to the internal sheath; the external sheath protective layer is made from polyamide; and the insulated layer is made from silane crosslinked polyethylene or a special material. The invention furthermore discloses a manufacturing method for the cable. The cable has the following main beneficial effects: the mechanical property redundancy is more proper, more resources are saved, the wear resistance, the water seepage resistance, the seawater resistance and the shielding performance are better, and high voltage can be better transmitted.

Description

A kind of shielding properties preferable seabed high-tension cable
Technical field
The invention belongs to seabed cable technical field, especially relate to seabed high-tension cable and manufacture method thereof.
Background technology
Earth surface is divided into, by each big land, the vast waters communicated with each other and is referred to as ocean, and its gross area of the earth is about 3.6 hundred million square kilometres, account for that earth surface is long-pending 71%, approximately equal to 2.5 times of land surface, world ocean be one huge Treasure-house.It has a large amount of things necessary to the mankind and abundant industrial resources.Five main ocean of the earth be the Pacific Ocean, The Atlantic Ocean and the Indian Ocean, the Arctic Ocean, Antarctic Ocean, major part is with land and sea-floor relief line as boundary.
Along with industry develop rapidly, the exploration scale of Yu Haiyang is increased by people day by day, the value of ocean also by People more pay attention to, for this reason, it may be necessary to lay various submarine cable to be used as infrastructure, the most frequently used in submarine cable It is seabed high-tension cable, submarine optical fiber cable, sea floor optoelectronic composite cable.
In prior art, people had carried out research for seabed high-tension cable, such as: publication No. be CN102290135A, Entitled: rated voltage 220kV tri-core photoelectric composite submarine cable, outer drape over one's shoulders layer, armor including be sequentially distributed from outside to inside And inner liner, it is provided with three circumscribed electric units of two two-phases, described electric unit and described liner in described inner liner Layer surrounded three to be all filled with multiple filling unit, three described electric units and all of filling unit whole in gap The stranded formation one stock market main core segment of cable, is surrounded with gluing strap, all of filling list outside the main core segment of extra large cable after stranded In unit, at least one of which is light unit, and remaining fills unit is gasket for packing, and the rated voltage of this kind of cable reaches 220KV。
For another example: publication No. is CN101807450A, entitled: a kind of sea electric power cable, including arrange from the inside to the outside Outside conductor (1), semi-conductive layer (2), insulating barrier (3), cushion (4), lead set (5), inner restrictive coating (6), armor (7) and armouring Protective layer (8): described inner restrictive coating (6) is in series by two kinds of form head and the tail of semiconductive inner restrictive coating and insulation inner restrictive coating Mixed layer, the problem solving induced potential, and reduce loss, improve the purpose of current-carrying capacity.
Publication No. is CN101807453A, entitled: for the power cable in seabed, including the line arranged from the inside to the outside Core (1), screen layer (2), insulation (3), insulator screen layer and sheath (4), armouring inner cushion layer (5), armor (6) and armouring External protection (7): described core (1) is made up of steel wire wire and aluminum conductor, and described steel wire wire is positioned in core (1) Heart position, and steel wire wire and aluminum conductor be twisted into the core (1) that steel-cored aluminium strand structure is formed jointly.The core that it uses Being made up of steel wire wire and aluminum conductor, described steel wire wire is positioned at the center of core, and steel wire wire is with aluminum conductor altogether With being twisted into the core that steel-cored aluminium strand structure is formed.Be substituted for copper by aluminium, not only save cost, and electric conductivity is the completeest Entirely meet standard, and steel wire therein twists the blend of aluminium, solve again the problem that aluminum conductor tensile strength is not enough.
But, applicant is after repetition test, it is believed that seabed of the prior art high-tension cable there is also structure The space improved, is mainly manifested in (1) armor amount of redundancy excessive, and mainly tensile strength aspect, mainly examines in prior art Consider is the rounding of cable, and therefore, the reinforcement that armor uses, far beyond the tensile strength of demand, causes resource Waste；(2) anti-wear performance of external protection, water-impervious, anti-seawater performance are to be improved；(3) screen layer and the setting of insulating barrier Mode can be improved further, preferably to improve cable performance；(4) material of insulating barrier needs to be researched and developed further so that it is energy Reach higher pressure grade or performance.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose seabed high-tension cable and manufacture method thereof, they be use with Lower technical scheme realizes.
In first embodiment of the present invention, seabed high-tension cable, it is by the conductive unit set gradually from inside to outside 1, metal screen layer 2, water blocking layer 3, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted；Described conductive unit 1 Be be coated on outside conductor by conductor 11, extrusion molding insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on Conductor sheath 14 outside insulation screen is constituted, and on arbitrary cross section, the center of circle of conductor is mutually overlapping with the center of circle of insulating barrier Close, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by filling out Fill rope 6, reinforcement 7 is constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill Rope is one group with three and is constituted gasket for packing group, and reinforcement is one group with three and is constituted reinforcement group, gasket for packing group and reinforcement group Being alternately distributed outside inner sheath, gasket for packing group and reinforcement group are all close to inner sheath；The material of described oversheath protective layer Material is polyamide；The material of described insulating barrier is organosilane crosslinked polyethylene or by weight, is made up of following raw material : high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8 ～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, metatitanic acid Bismuth: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts.
In second embodiment of the present invention, seabed high-tension cable, it is by the metallic shield set gradually from inside to outside Layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted, the internal tool of metal screen layer There are the conductive unit 1 of three two circumscribed settings of two-phase, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 Be be coated on outside conductor by conductor 11, extrusion molding insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on Conductor sheath 14 outside insulation screen is constituted, and on arbitrary cross section, the center of circle of conductor is mutually overlapping with the center of circle of insulating barrier Close, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by filling out Fill rope 6, reinforcement 7 is constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill Restricting and be one group with two and constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group with add Strong part is all close to inner sheath；The material of described oversheath protective layer is polyamide；The material of described insulating barrier is crosslinkable silane Connection polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethyl vinyl acetate second Enoate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 Part, zirconium dioxide: 3～5 parts.
In 3rd embodiment of the present invention, seabed high-tension cable, it is by the metallic shield set gradually from inside to outside Layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, and have outside three two two-phases inside metal screen layer Cut the conductive unit 1 of setting, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is by conductor 11, extrusion molding The insulating barrier 12 that is coated on outside conductor, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on outside insulation screen Conductor sheath 14 constitute, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier is straight Footpath is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 structure Become, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing replaces with reinforcement Being distributed in outside inner sheath, gasket for packing and reinforcement are all close to inner sheath；The material of described insulating barrier is that crosslinked with silicane gathers Ethene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate Copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 Part, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, two Zirconium oxide: 3～5 parts.
In 4th embodiment of the present invention, seabed high-tension cable, it is by the metallic shield set gradually from inside to outside Layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, and have outside three two two-phases inside metal screen layer Cut the conductive unit 1 of setting, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is by conductor 11, extrusion molding The insulating barrier 12 that is coated on outside conductor, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on outside insulation screen Conductor sheath 14 constitute, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier is straight Footpath is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 structure Become, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing is one group with two Constituting gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement be all be close in Sheath；The material of described insulating barrier is organosilane crosslinked polyethylene or by weight, is made up of following raw material: high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts.
Seabed high-tension cable in the present invention the first embodiment, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；
Second step: manufacture the step of metal screen layer: in the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips Mode be coated with outside the conductive unit formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, lap width be 2～ 5mm, lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm； When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form the step of water blocking layer: taking water blocking layer is waterstop or non-woven fabrics or polyester band or aluminum plastic composite belt longitudinal To being coated on outside the metal screen layer manufactured in second step, form water blocking layer；
4th step: manufacture inner sheath step: take polyethylene or polyvinyl chloride extrusion molding cladding manufactured in the third step block water Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with three and constituted gasket for packing group, reinforcement is one group with three and is constituted reinforcement group, and gasket for packing group is handed over reinforcement group For being distributed in outside inner sheath, gasket for packing group and reinforcement group are all close to inner sheath；The material of stiffener be steel wire or Fiberglass reinforced plastics or aramid yarn；The material of plastic layer is polypropylene or LLDPE or low density polyethylene Alkene or high density polyethylene (HDPE)；The diameter of gasket for packing is equal with the diameter of reinforcement；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；
7th step: manufacture the step of oversheath protective layer: take outside polyamide being coated on by its extrusion molding manufactured in the 6th step Outside sheath, forming seabed high-tension cable finished product, the thickness of described oversheath protective layer is 1.0～2.0mm.
Seabed high-tension cable in the present invention the second embodiment, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with two and constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement Part is all close to inner sheath；The material of stiffener is steel wire or fiberglass reinforced plastics or aramid yarn；Plastic layer Material is polypropylene or LLDPE or low density polyethylene (LDPE) or high density polyethylene (HDPE)；The diameter of gasket for packing and reinforcement The diameter of part is equal；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；
7th step: manufacture the step of oversheath protective layer: take outside polyamide being coated on by its extrusion molding manufactured in the 6th step Outside sheath, forming seabed high-tension cable finished product, the thickness of described oversheath protective layer is 1.0～2.0mm.
Seabed high-tension cable in the present invention the 3rd embodiment, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being alternately distributed outside inner sheath with reinforcement, gasket for packing and reinforcement are all close to inner sheath；The material of stiffener is Steel wire or fiberglass reinforced plastics or aramid yarn；The material of plastic layer is polypropylene or LLDPE or low close Degree polyethylene or high density polyethylene (HDPE)；The diameter of gasket for packing is equal with the diameter of reinforcement；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；Complete the manufacture of seabed high-tension cable finished product.
Seabed high-tension cable in the present invention the 4th embodiment, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with two and constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement Part is all close to inner sheath；The material of stiffener is steel wire or fiberglass reinforced plastics or aramid yarn；Plastic layer Material is polypropylene or LLDPE or low density polyethylene (LDPE) or high density polyethylene (HDPE)；The diameter of gasket for packing and reinforcement The diameter of part is equal；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；Complete the manufacture of seabed high-tension cable finished product.
In the present invention, due to reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, therefore, The size of stiffener can carry out appropriate design according to mechanical property requirements, and its outside plastic layer achieve tangent, The technology of rounding, i.e. armor amount of redundancy can be transferred to properly, coordinate gasket for packing to order and make resource more save.
In the present invention, oversheath and presumable oversheath protective layer, make product be provided with more excellent than prior art Anti-wear performance, water-impervious, anti-seawater performance.
In the present invention, screen layer is different with of the prior art from the set-up mode of insulating barrier, screen layer in prior art It is close to conductor, is actually difficulty with the effect of shielding；Therefore, the present invention make the shielding properties of cable be substantially improved, not only Achieve the eliminating of external disturbance, considerably reduce the impact that conductor self radiation is external simultaneously.
In the present invention, owing to have employed special insulating layer material, and suitably thickness proportion and concentricity so that electricity The insulating properties of cable are greatly increased, through test, the present invention for transmission 500～1000KV electric power, 1000 meters, 30,000 hours, not Any punch-through is had to occur.
Simply, easily grasp, the production equipment using cable production firm conventional is the most permissible for the cable making method of the present invention Producing, therefore, equipment investment is few, more economically practical, makes utilization rate of equipment and installations higher.
Therefore, the present invention has a following main beneficial effect: cable machinery performance redundancy amount is more suitable, resource is more saved, More anti-wear performance, more can water-impervious, more anti-seawater, shielding properties more preferably, more can transmit high voltage.
Accompanying drawing explanation
Fig. 1 is the perspective view after one section of stripping of embodiment 1 of the present invention.
Fig. 2 is the cross-sectional structure schematic diagram after Fig. 1 amplifies.
Fig. 3 is the perspective view after one section of stripping of embodiment 2 of the present invention.
Fig. 4 is the cross-sectional structure schematic diagram after Fig. 3 amplifies.
Fig. 5 is the perspective view after one section of stripping of embodiment 3 of the present invention.
Fig. 6 is the cross-sectional structure schematic diagram after Fig. 5 amplifies.
Fig. 7 is the perspective view after one section of stripping of embodiment 4 of the present invention.
Fig. 8 is the cross-sectional structure schematic diagram after Fig. 7 amplifies.
Detailed description of the invention
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, seabed high-tension cable, it be by the conductive unit 1 set gradually from inside to outside, metal screen layer 2, Water blocking layer 3, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted；Described conductive unit 1 is by conductor 11, extrusion molding The insulating barrier 12 that is coated on outside conductor, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on outside insulation screen Conductor sheath 14 constitute, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier is straight Footpath is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 structure Become, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing is one group with three Constituting gasket for packing group, reinforcement is one group with three and is constituted reinforcement group, and gasket for packing group is alternately distributed with reinforcement group and protects interior Set is outside, and gasket for packing group and reinforcement group are all close to inner sheath；The material of described oversheath protective layer is polyamide；Described The material of insulating barrier is organosilane crosslinked polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2 ～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts.
The material of described metal screen layer is steel band or aluminium strip or copper strips, is in the way of longitudinally cladding or spiral is wrapped Mode is coated on outside conductive unit；Longitudinally during cladding, having overlapping overlap joint, lap width is 2～5mm, lap-joint's heat Melten gel bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front Having overlapping overlap joint between rear screw, lap width is 1～3mm.
Embodiment 2
Asking for an interview Fig. 3 and Fig. 4, seabed high-tension cable, it is by the metal screen layer 2 set gradually from inside to outside, water blocking layer 3, glues Knot layer 4, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted, and have outside three two two-phases inside metal screen layer Cut the conductive unit 1 of setting, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is by conductor 11, extrusion molding The insulating barrier 12 that is coated on outside conductor, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on outside insulation screen Conductor sheath 14 constitute, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier is straight Footpath is 1.5～5 times of conductor diameter and thickness of insulating layer minimum of a value is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 structure Become, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing is one group with two Constituting gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement be all be close in Sheath；The material of described oversheath protective layer is polyamide；The material of described insulating barrier be organosilane crosslinked polyethylene or By weight, it is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10 ～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, metatitanic acid Strontium: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts.
Embodiment 3
Asking for an interview Fig. 5 and Fig. 6, seabed high-tension cable, it is by the metal screen layer 2 set gradually from inside to outside, water blocking layer 3, glues Knot layer 4, inner sheath 5, armor, oversheath 8 are constituted, and have the conduction list of three two circumscribed settings of two-phase inside metal screen layer Unit 1, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is coated on outside conductor by conductor 11, extrusion molding Insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on conductor sheath 14 structure outside insulation screen Becoming, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and the diameter of insulating barrier is conductor diameter 1.5～5 times and thickness of insulating layer minimum of a value are 1.5mm；Described armor is made up of gasket for packing 6, reinforcement 7, and reinforcement 7 is by adding Strong component 71, being coated on the plastic layer 72 outside stiffener and constitute, gasket for packing and reinforcement are alternately distributed outside inner sheath Portion, gasket for packing and reinforcement are all close to inner sheath；The material of described insulating barrier be organosilane crosslinked polyethylene or by weight Amount part meter, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 Part, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～ 4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 Part.
Embodiment 4
Asking for an interview Fig. 7 and Fig. 8, seabed high-tension cable, it is by the metal screen layer 2 set gradually from inside to outside, water blocking layer 3, glues Knot layer 4, inner sheath 5, armor, oversheath 8 are constituted, and have the conduction list of three two circumscribed settings of two-phase inside metal screen layer Unit 1, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is coated on outside conductor by conductor 11, extrusion molding Insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding is coated on conductor sheath 14 structure outside insulation screen Becoming, on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and the diameter of insulating barrier is conductor diameter 1.5～5 times and thickness of insulating layer minimum of a value are 1.5mm；Described armor is made up of gasket for packing 6, reinforcement 7, and reinforcement 7 is by adding Strong component 71, being coated on the plastic layer 72 outside stiffener and constitute, gasket for packing is one group with two and is constituted gasket for packing group, fills out Filling rope group and be alternately distributed outside inner sheath with reinforcement, gasket for packing group and reinforcement are all close to inner sheath；Described insulation The material of layer is organosilane crosslinked polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～ 85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～ 15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 Part, silica: 3～5 parts, zirconium dioxide: 3～5 parts.
Seabed high-tension cable described in arbitrary embodiment, the material of described metal screen layer in above-mentioned embodiment 2-4 Material is steel band or aluminium strip or copper strips, is in the way of longitudinally cladding or the wrapped mode of spiral is coated on three conductive unit entirety Outside；Longitudinally during cladding, having overlapping overlap joint, lap width is 2～5mm, and lap-joint's PUR bonds, lap-joint's steel band Between or aluminium strip between or copper strips between peel strength minimum of a value be 1.6N/mm；When spiral is wrapped, front and back there is between spiral overlap and take Connecing, lap width is 1～3mm.
Seabed high-tension cable described in arbitrary embodiment in above-mentioned embodiment 2-4, the material of described tack coat is Polypropylene.
Seabed high-tension cable described in any of the above-described embodiment, described water blocking layer is waterstop or non-woven fabrics or polyester Band or aluminium-plastic tape.
Seabed high-tension cable described in any of the above-described embodiment, described insulation screen is conductive plastics.
Seabed high-tension cable described in any of the above-described embodiment, the material of described protective cover of conductor is high-density polyethylene Alkene or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE).
Seabed high-tension cable described in any of the above-described embodiment, the material of main part of described inner sheath is polyethylene or poly- Vinyl chloride.
Seabed high-tension cable described in any of the above-described embodiment, the material of described oversheath be high density polyethylene (HDPE) or Medium density polyethylene.
Seabed high-tension cable described in any of the above-described embodiment, the material of described gasket for packing is polypropylene or the lowest Density polyethylene or low density polyethylene (LDPE).
Seabed high-tension cable described in any of the above-described embodiment, the material of described stiffener is steel wire or glass fibers Dimension reinforced plastics or aramid yarn.
Seabed high-tension cable described in any of the above-described embodiment, the material of described plastic layer is polypropylene or linear Low density polyethylene (LDPE) or low density polyethylene (LDPE) or high density polyethylene (HDPE).
Seabed high-tension cable in embodiment 1 of the present invention, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；
Second step: manufacture the step of metal screen layer: in the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips Mode be coated with outside the conductive unit formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, lap width be 2～ 5mm, lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm； When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form the step of water blocking layer: taking water blocking layer is waterstop or non-woven fabrics or polyester band or aluminum plastic composite belt longitudinal To being coated on outside the metal screen layer manufactured in second step, form water blocking layer；
4th step: manufacture inner sheath step: take polyethylene or polyvinyl chloride extrusion molding cladding manufactured in the third step block water Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with three and constituted gasket for packing group, reinforcement is one group with three and is constituted reinforcement group, and gasket for packing group is handed over reinforcement group For being distributed in outside inner sheath, gasket for packing group and reinforcement group are all close to inner sheath；The material of stiffener be steel wire or Fiberglass reinforced plastics or aramid yarn；The material of plastic layer is polypropylene or LLDPE or low density polyethylene Alkene or high density polyethylene (HDPE)；The diameter of gasket for packing is equal with the diameter of reinforcement；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；
7th step: manufacture the step of oversheath protective layer: take outside polyamide being coated on by its extrusion molding manufactured in the 6th step Outside sheath, forming seabed high-tension cable finished product, the thickness of described oversheath protective layer is 1.0～2.0mm.
Seabed high-tension cable in embodiment 2 of the present invention, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with two and constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement Part is all close to inner sheath；The material of stiffener is steel wire or fiberglass reinforced plastics or aramid yarn；Plastic layer Material is polypropylene or LLDPE or low density polyethylene (LDPE) or high density polyethylene (HDPE)；The diameter of gasket for packing and reinforcement The diameter of part is equal；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；
7th step: manufacture the step of oversheath protective layer: take outside polyamide being coated on by its extrusion molding manufactured in the 6th step Outside sheath, forming seabed high-tension cable finished product, the thickness of described oversheath protective layer is 1.0～2.0mm.
Seabed high-tension cable in embodiment 3 of the present invention, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being alternately distributed outside inner sheath with reinforcement, gasket for packing and reinforcement are all close to inner sheath；The material of stiffener is Steel wire or fiberglass reinforced plastics or aramid yarn；The material of plastic layer is polypropylene or LLDPE or low close Degree polyethylene or high density polyethylene (HDPE)；The diameter of gasket for packing is equal with the diameter of reinforcement；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；Complete the manufacture of seabed high-tension cable finished product.
Seabed high-tension cable in embodiment 4 of the present invention, it by the following method step be fabricated by:
The first step: manufacture the step of conductive unit: first take many copper wires or aluminium wire or many copper wires carry out stranded with multiple aluminium wire, Form the conductor of required sectional area；Take organosilane crosslinked polyethylene or by weight again, be made up of following raw material: be high Density polyethylene: 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 Part, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, bismuth titanates: 2～ 4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, outside conductor Plastic extruding insulated layer, makes the center of circle of conductor coincide with the center of circle of insulating barrier, and the diameter of insulating barrier is the 1.5～5 of conductor diameter Times and thickness of insulating layer minimum of a value be 1.5mm；Then insulation screen is formed outside conductive plastics extrusion molding is coated on insulating barrier； Then high density polyethylene (HDPE) or medium density polyethylene or polyvinyl chloride or low density polyethylene (LDPE) extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；
Second step: manufacture the step of metal screen layer: take three conductive unit two two-phases manufactured in the first step and twist circumscribedly Close or be placed in parallel, conductive unit intertwist body；In the way of longitudinally cladding or spiral is wrapped to take steel band or aluminium strip or copper strips again Mode is close to be coated with outside the conductive unit intertwist body formed in the first step；Longitudinally during cladding, there is overlapping overlap joint, overlap joint width Degree is 2～5mm, and lap-joint's PUR bonds, and the peel strength minimum of a value between lap-joint's steel band or between aluminium strip or between copper strips is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm；
3rd step: form water blocking layer and the step of tack coat: taking water blocking layer is waterstop or non-woven fabrics or polyester band or plastic-aluminum Composite belt longitudinal, to being coated on outside the metal screen layer manufactured in second step, forms water blocking layer；Take polypropylene extrusion molding to be coated on Tack coat is formed outside water blocking layer；
4th step: manufacture the step of inner sheath: take polyethylene or polyvinyl chloride extrusion molding is coated with the bonding manufactured in the third step Layer is outside forms inner sheath；
5th step: manufacture the step of armor: take pre-manufactured gasket for packing and make in the 4th step with reinforcement helical coated Outside the inner sheath made, wherein reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, gasket for packing Being one group with two and constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and reinforcement Part is all close to inner sheath；The material of stiffener is steel wire or fiberglass reinforced plastics or aramid yarn；Plastic layer Material is polypropylene or LLDPE or low density polyethylene (LDPE) or high density polyethylene (HDPE)；The diameter of gasket for packing and reinforcement The diameter of part is equal；
6th step: manufacture the step of oversheath: by oversheath extruding machine by high density polyethylene (HDPE) or medium density polyethylene extrusion molding It is coated on outside the armor that the 5th step is formed, forms oversheath；Complete the manufacture of seabed high-tension cable finished product.
In the present invention, due to reinforcement by stiffener, be coated on the plastic layer outside stiffener and constitute, therefore, The size of stiffener can carry out appropriate design according to mechanical property requirements, and its outside plastic layer achieve tangent, The technology of rounding, i.e. armor amount of redundancy can be transferred to properly, coordinate gasket for packing to order and make resource more save.
In the present invention, oversheath and presumable oversheath protective layer, make product be provided with more excellent than prior art Anti-wear performance, water-impervious, anti-seawater performance.
In the present invention, screen layer is different with of the prior art from the set-up mode of insulating barrier, screen layer in prior art It is close to conductor, is actually difficulty with the effect of shielding；Therefore, the present invention make the shielding properties of cable be substantially improved, not only Achieve the eliminating of external disturbance, considerably reduce the impact that conductor self radiation is external simultaneously.
In the present invention, owing to have employed special insulating layer material, and suitably thickness proportion and concentricity so that electricity The insulating properties of cable are greatly increased, through test, the present invention for transmission 500～1000KV electric power, 1000 meters, 30,000 hours, not Any punch-through is had to occur.
Through applicant's repeated tests, find that the optimization formula of insulating barrier is: insulating layer material by weight, by with Lower raw material are constituted: high density polyethylene (HDPE): 80 parts, ethylene-vinyl acetate copolymer: 15 parts, ethylene-tetrafluoroethylene copolymerization Thing: 12 parts, magnesium hydroxide: 13 parts, antioxidant 1010: 4 parts, strontium titanates: 3 parts, calcium titanate: 3 parts, bismuth titanates: 3 parts, magnesium titanate: 3 parts, silica: 4 parts, zirconium dioxide: 4 parts.
In the application, insulating barrier is through test, and its major parameter is as follows: melt flows mass rate :≤1.8g/10min； Density≤1.06g/cm3；Hot strength >=21MPa；Break-draw strain >=550%；Resisting environmental stress and cracking F0/h≥130h；It is situated between Electric strength >=75kV/mm；Specific insulation >=5 × 1015ρv/Ω·m；Dielectric strength εr≤2.8。
Optimization formula is through test, and its major parameter is as follows: melt flows mass rate: 1.5g/10min；Density≤ 1.01g/cm3；Hot strength: 25MPa；Break-draw strains: 580%；Resisting environmental stress and cracking F0/ h:160h；Dielectric strength: 82kV/mm；Specific insulation: 5.9 × 1015ρv/Ω·m；Dielectric strength εr: 2.6.
Above-mentioned parameter ensure that it has excellent insulating properties and extrusion processing performance, enables the cable of the present invention to pass Defeated 500～the electric power of 1000KV.
Simply, easily grasp, the production equipment using cable production firm conventional is the most permissible for the cable making method of the present invention Producing, therefore, equipment investment is few, more economically practical, makes utilization rate of equipment and installations higher.
Therefore, the present invention has a following main beneficial effect: cable machinery performance redundancy amount is more suitable, resource is more saved, More anti-wear performance, more can water-impervious, more anti-seawater, shielding properties more preferably, more can transmit high voltage.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be by other all shapes Formula is implemented to use, and they also fall within protection scope of the present invention.

Claims (1)

1. seabed high-tension cable, it is characterised in that it is by the conductive unit set gradually from inside to outside, metal screen layer, blocks water Layer, inner sheath, armor, oversheath, oversheath protective layer are constituted；Described conductive unit is to be coated on conductor by conductor, extrusion molding Outer insulating barrier, be positioned at the insulation screen outside insulating barrier, extrusion molding is coated on the conductor sheath outside insulation screen and constitutes , on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and the diameter of insulating barrier is conductor diameter 1.5～5 times and thickness of insulating layer minimum of a value are 1.5mm；Described armor is made up of gasket for packing, reinforcement, and reinforcement is by strengthening Component, being coated on the plastic layer outside stiffener and constitute, gasket for packing is one group with three and is constituted gasket for packing group, reinforcement with Three are one group and constitute reinforcement group, and gasket for packing group and reinforcement group are alternately distributed outside inner sheath, gasket for packing group and reinforcement Part group is all close to inner sheath；The material of described oversheath protective layer is polyamide；The material of described insulating barrier is by weight Part meter, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, Ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 Part, calcium titanate: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silica: 3～5 parts, zirconium dioxide: 3～5 parts；
The material of described metal screen layer is copper strips, is to be coated on outside conductive unit in the way of longitudinally cladding；
Described water blocking layer is non-woven fabrics.
CN201610397375.5A 2014-09-15 2014-09-15 Submarine high-voltage cable with relatively good shielding performance Withdrawn CN105931745A (en)

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CN201410467691.6A CN104376904B (en) 2014-09-15 2014-09-15 Submarine high voltage cable and manufacturing method thereof

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CN201610398242.XA Withdrawn CN105957589A (en) 2014-09-15 2014-09-15 Watertight submarine high-voltage cable with good shielding performance
CN201610361003.7A Pending CN106098168A (en) 2014-09-15 2014-09-15 One seabed high voltage power cable armouring cable core and manufacture method thereof
CN201610254161.2A Pending CN105976912A (en) 2014-09-15 2014-09-15 Undersea high-voltage cable, undersea high-voltage cable manufacturing method and insulation layer material for high-voltage cables
CN201410467691.6A Active CN104376904B (en) 2014-09-15 2014-09-15 Submarine high voltage cable and manufacturing method thereof
CN201610397407.1A Withdrawn CN106098170A (en) 2014-09-15 2014-09-15 A kind of seabed high tension cable of water-impervious
CN201610398243.4A Withdrawn CN105957607A (en) 2014-09-15 2014-09-15 Submarine high-voltage cable
CN201610398241.5A Withdrawn CN105913907A (en) 2014-09-15 2014-09-15 Submarine high-voltage cable
CN201610361002.2A Pending CN106024104A (en) 2014-09-15 2014-09-15 Inner sheath for seafloor high-voltage power cable and manufacturing method for inner sheath
CN201610397375.5A Withdrawn CN105931745A (en) 2014-09-15 2014-09-15 Submarine high-voltage cable with relatively good shielding performance

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CN201610361003.7A Pending CN106098168A (en) 2014-09-15 2014-09-15 One seabed high voltage power cable armouring cable core and manufacture method thereof
CN201610254161.2A Pending CN105976912A (en) 2014-09-15 2014-09-15 Undersea high-voltage cable, undersea high-voltage cable manufacturing method and insulation layer material for high-voltage cables
CN201410467691.6A Active CN104376904B (en) 2014-09-15 2014-09-15 Submarine high voltage cable and manufacturing method thereof
CN201610397407.1A Withdrawn CN106098170A (en) 2014-09-15 2014-09-15 A kind of seabed high tension cable of water-impervious
CN201610398243.4A Withdrawn CN105957607A (en) 2014-09-15 2014-09-15 Submarine high-voltage cable
CN201610398241.5A Withdrawn CN105913907A (en) 2014-09-15 2014-09-15 Submarine high-voltage cable
CN201610361002.2A Pending CN106024104A (en) 2014-09-15 2014-09-15 Inner sheath for seafloor high-voltage power cable and manufacturing method for inner sheath

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CN105885465A (en) * 2016-05-18 2016-08-24 无为县金华电缆材料有限公司 Formula of ultraviolet-resistant waterproof cable armored layer
CN106531300B (en) * 2016-10-27 2018-06-29 国网江苏省电力有限公司宿迁供电分公司 A kind of power equipment
CN107099092A (en) * 2017-04-07 2017-08-29 安徽省无为县经纬电缆附件有限公司 A kind of power-frequency electromagnetic fields
CN115985569B (en) * 2017-06-13 2023-12-05 中天科技海缆股份有限公司 Umbilical cable

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IT1109991B (en) * 1978-03-21 1985-12-23 Pirelli IMPROVEMENT OF SUBMARINE ELECTRIC LINES
CN1257513C (en) * 2002-03-18 2006-05-24 上海至正企业发展有限公司 Flame retardant polyolefin cable material with low smoke halogen and its preparing method
CN2755741Y (en) * 2004-11-28 2006-02-01 无锡市东峰电缆厂 High-voltage single-core power supply cable for digging ship
CN201045709Y (en) * 2007-05-22 2008-04-09 宁波东方电缆有限公司 High-voltage undersea cable
CN201984870U (en) * 2011-03-08 2011-09-21 远东电缆有限公司 Suspension submarine cable
CN102280195B (en) * 2011-05-23 2012-09-05 江苏亨通高压电缆有限公司 High voltage and supervoltage cross-linked polyethylene insulating submarine power cable with single core
CN203038703U (en) * 2012-12-27 2013-07-03 上海南大集团有限公司 Reinforced waterproof cable
CN103325489B (en) * 2013-07-01 2015-05-13 中利科技集团股份有限公司 Lightning protected cable for communication base station
CN103435897A (en) * 2013-09-16 2013-12-11 黑龙江省润特科技有限公司 Microwave induced intumescent flame-retardant silane crosslinked polyolefin sheath material for cables and preparation method thereof

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CN106098170A (en) 2016-11-09
CN104376904A (en) 2015-02-25
CN104376904B (en) 2017-02-22
CN105957589A (en) 2016-09-21
CN106098168A (en) 2016-11-09
CN105976912A (en) 2016-09-28
CN105913907A (en) 2016-08-31
CN106024104A (en) 2016-10-12

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Application publication date: 20160907