CN106098168A

CN106098168A - One seabed high voltage power cable armouring cable core and manufacture method thereof

Info

Publication number: CN106098168A
Application number: CN201610361003.7A
Authority: CN
Inventors: 沈群华
Original assignee: Suzhou Gaojing Tezhuan Information Technology Co Ltd
Current assignee: Suzhou Gaojing Tezhuan Information Technology Co Ltd
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2016-11-09
Also published as: CN106098170A; CN105913907A; CN105957607A; CN105957589A; CN104376904B; CN105976912A; CN105931745A; CN106024104A; CN104376904A

Abstract

The invention belongs to technical field of cables, especially relate to seabed high voltage power cable armouring cable core and manufacture method thereof, manufacture method contains and manufactures the step of conductive unit, the step of manufacture metal screen layer, form the step of water blocking layer, the step of manufacture inner sheath, the step of manufacture armor.The present invention has a following main beneficial effect: mechanical performance amount of redundancy is more suitable, resource is more saved, more anti-wear performance, more can water-impervious, more anti-sea water, shielding properties more preferably, more can transmit high voltage.

Description

One seabed high voltage power cable armouring cable core and manufacture method thereof

The application is entitled: seabed high tension cable and manufacture method, filing date: on 09 15th, 2014, application Number it is: the divisional application of the patent of invention of 201510049118.8；Application No.: the Shen of the patent of invention of 201510049118.8 Please require that entitled: seabed high tension cable and manufacture method, filing date: on 09 15th, 2014, Application No.: 201410467691.6 the divisional application of patent of invention.

Technical field

The invention belongs to seabed cable technical field, especially relate to seabed high voltage power cable and manufacture method thereof, And the seabed high voltage power cable manufacture method of armouring cable core.

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 voltage power cable, submarine optical fiber cable, sea floor optoelectronic composite cable.

In prior art, people had carried out research for seabed high voltage power cable, such as: publication No. is CN102290135A, entitled: rated voltage 220kV tri-core photoelectric composite submarine cable, including be sequentially distributed from outside to inside Drape over one's shoulders outward layer, armor and inner liner, in described inner liner, be provided with three two biphase circumscribed electric units, described electric unit With described inner liner surrounded three at gap be all filled with multiple filling unit, three described electric units and all of Fill unit whole stranded formation one stock market main core segment of cable, outside the main core segment of extra large cable after stranded, be surrounded with gluing strap, In all of filling unit, at least one of which is light unit, and remaining fills unit is gasket for packing, the specified electricity of this kind of cable Pressure has reached 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), it is characterised in that: described inner restrictive coating (6) is by semiconductive inner restrictive coating and insulation two kinds of forms head of inner restrictive coating The mixed layer that tail is in series, 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 core arranged from the inside to the outside (1), outside screen layer (2), insulation (3), insulator screen layer and sheath (4), armouring inner cushion layer (5), armor (6) and armouring Protective layer (7), it is characterised in that: described core (1) is made up of steel wire wire and aluminum conductor, and described steel wire wire is positioned at core (1) center, and steel wire wire and aluminum conductor be twisted into the core (1) that steel-cored aluminium strand structure is formed jointly.It is adopted Core be made up of steel wire wire and aluminum conductor, described steel wire wire is positioned at the center of core, and steel wire wire with Aluminum conductor is twisted into the core that steel-cored aluminium strand structure is formed jointly.Be substituted for copper by aluminum, not only save cost, and lead Electrically it is also fully consistent with standard, and steel wire therein twists the blend of aluminum, 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-sea water 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 voltage power cable and manufacture method thereof, it Realize by the following technical solutions.

A kind of seabed high voltage power cable armouring cable core, it is characterised in that it is by the metal set gradually from inside to outside Screen layer, water blocking layer, tack coat, inner sheath, armor are constituted, and have three two biphase circumscribed settings inside metal screen layer Conductive unit, three conductive units and metal screen layer phase inscribe；Described conductive unit is to be coated on outside conductor by conductor, extrusion molding Insulating barrier, be positioned at the insulation screen outside insulating barrier, extrusion molding is coated on what the conductor sheath outside insulation screen was constituted, 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 be conductor diameter 1.5～ 5 times and thickness of insulating layer minima are 1.5mm；Described armor is made up of gasket for packing, reinforcement, reinforcement by stiffener, Being coated on plastic layer outside stiffener to constitute, gasket for packing is one group with two and is constituted gasket for packing group, gasket for packing group with add Strong part is alternately distributed outside inner sheath, and gasket for packing group and reinforcement are all close to inner sheath；Described insulating barrier is by weight Meter, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, second Alkene-TFE 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts；Institute The material stating gasket for packing is linear low density polyethylene.

The manufacture method of a kind of seabed high voltage power cable armouring cable core, it is characterised in that it is to comprise the steps of

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 insulating layer material again, described insulating layer material by weight, by following raw material structure Become: 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, The outer plastic extruding insulated layer of conductor, makes the center of circle of conductor coincide 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 minima are 1.5mm；Then insulation is formed outside conductive plastics extrusion molding is coated on insulating barrier Screen layer；Then high density polyethylene (HDPE) or medium density polyethylene or polrvinyl chloride or Low Density Polyethylene extrusion molding are coated on insulation Conductor sheath is formed outside screen layer；

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 minima 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 polrvinyl 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 low density polyethylene or high density polyethylene (HDPE)；Fill out The diameter of the diameter and reinforcement that fill rope is equal；Form seabed high voltage power cable armouring cable core.

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 insulating layer material again, described insulating layer material by weight, by following raw material structure Become: 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts；Put in insulating barrier extruding machine, The outer plastic extruding insulated layer of conductor, makes the center of circle of conductor coincide 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 minima are 1.5mm；Then insulation is formed outside conductive plastics extrusion molding is coated on insulating barrier Screen layer；Then high density polyethylene (HDPE) or medium density polyethylene or polrvinyl chloride or Low Density Polyethylene extrusion molding are coated on insulation Conductor sheath is formed outside screen layer；Above-mentioned steps repeatedly, until forming three conductive units；

Second step: manufacture the step of metal screen layer: take that three conductive units two manufactured in the first step are biphase to 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 minima 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 polrvinyl 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 Low Density Polyethylene or high density polyethylene (HDPE)；The diameter of gasket for packing is equal with the diameter of reinforcement； Form seabed high voltage power cable armouring cable core.

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 Low Density Polyethylene or high density is gathered Ethylene；The diameter of gasket for packing is equal with the diameter of reinforcement；Form seabed high voltage power cable armouring cable core.

In first embodiment of the present invention, seabed high voltage power cable, it is characterised in that it is by depending on from inside to outside The conductive unit 1 of secondary setting, metal screen layer 2, water blocking layer 3, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 structure Become；Described conductive unit 1 be coated on outside conductor by conductor 11, extrusion molding insulating barrier 12, be positioned at the insulation screen outside insulating barrier Cover layer 13, extrusion molding is coated on what conductor sheath 14 outside insulation screen was constituted, on arbitrary cross section, the center of circle of conductor with The center of circle of insulating barrier coincides, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor is made up of gasket for packing 6, reinforcement 7, reinforcement 7 by stiffener 71, be coated on stiffener outside Plastic layer 72 constitute, gasket for packing 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 are alternately distributed outside inner sheath, and gasket for packing group and reinforcement group are all close to inner sheath； The material of described oversheath protective layer is polyamide；The material of described insulating barrier is organosilane crosslinked polyethylene or by weight Meter, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, second Alkene-TFE 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

In second embodiment of the present invention, seabed high voltage power cable, it is characterised in that it is by depending on from inside to outside The metal screen layer 2 of secondary setting, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted, Having the conductive unit 1 of three two biphase circumscribed settings inside metal screen layer, three conductive units are interior mutually with metal screen layer Cut；Described conductive unit 1 be coated on outside conductor by conductor 11, extrusion molding insulating barrier 12, be positioned at the insulation screen outside insulating barrier Cover layer 13, extrusion molding is coated on what conductor sheath 14 outside insulation screen was constituted, on arbitrary cross section, the center of circle of conductor with The center of circle of insulating barrier coincides, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor is made up of gasket for packing 6, reinforcement 7, reinforcement 7 by stiffener 71, be coated on stiffener outside Plastic layer 72 constitute, gasket for packing is one group with two and is constituted gasket for packing group, including gasket for packing group and reinforcement are alternately distributed Outside sheath, gasket for packing group and reinforcement 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

In 3rd embodiment of the present invention, seabed high voltage power cable, it is characterised in that it is by depending on from inside to outside The metal screen layer 2 of secondary setting, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, inside metal screen layer There is the conductive unit 1 of three two biphase circumscribed settings, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 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 cladding Conductor sheath 14 outside insulation screen is constituted, on arbitrary cross section, and the center of circle phase of the center of circle of conductor and insulating barrier Overlap, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor by Gasket for packing 6, reinforcement 7 are constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill out Filling rope and be alternately distributed outside inner sheath with reinforcement, gasket for packing and reinforcement are all close to inner sheath；Described insulating barrier Material is organosilane crosslinked polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 Part, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymer: 8～16 parts, magnesium hydroxide: 10～15 Part, 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, Silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

In 4th embodiment of the present invention, seabed high voltage power cable, it is characterised in that it is by depending on from inside to outside The metal screen layer 2 of secondary setting, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, inside metal screen layer There is the conductive unit 1 of three two biphase circumscribed settings, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 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 cladding Conductor sheath 14 outside insulation screen is constituted, on arbitrary cross section, and the center of circle phase of the center of circle of conductor and insulating barrier Overlap, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor by Gasket for packing 6, reinforcement 7 are constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill out Filling rope to be one group with two and is constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and Reinforcement is all close to inner sheath；The material of described insulating barrier is organosilane crosslinked polyethylene or by weight, by with Lower raw material is constituted: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoro Ethylene 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

Seabed high voltage power cable in the present invention the first embodiment, it is that step is fabricated by by the following method :

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, silicon dioxide: 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 minima 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 polrvinyl chloride or Low Density Polyethylene extrusion molding are coated on insulation screen Outside formed conductor 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 linear low density polyethylene 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 voltage power cable finished product, the thickness of described oversheath protective layer is 1.0～2.0mm.

Seabed high voltage power cable in the present invention the second embodiment, it is that step is fabricated by by the following method :

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, silicon dioxide: 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 minima 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 polrvinyl chloride or Low Density Polyethylene extrusion molding are coated on insulation screen Outside formed conductor sheath；Above-mentioned steps repeatedly, until forming three conductive units；

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 linear low density polyethylene or Low Density Polyethylene or high density polyethylene (HDPE)；The diameter of gasket for packing and reinforcement The diameter of part is equal；

Seabed high voltage power cable in the present invention the 3rd embodiment, it is that step is fabricated by by the following method :

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 linear low density polyethylene 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 voltage power cable finished product.

Seabed high voltage power cable in the present invention the 4th embodiment, it is that step is fabricated by by the following method :

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-sea water 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-sea water, 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 voltage power cable, it is characterised in that it is by the conduction list set gradually from inside to outside Unit 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 coated on outside conductor by conductor 11, extrusion molding insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding cladding Conductor sheath 14 outside insulation screen is constituted, on arbitrary cross section, and the center of circle phase of the center of circle of conductor and insulating barrier Overlap, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor by Gasket for packing 6, reinforcement 7 are constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill out Filling rope to be one group with three and constituted gasket for packing group, reinforcement is one group with three and is constituted reinforcement group, gasket for packing group and reinforcement Group is alternately distributed outside inner sheath, and gasket for packing group and reinforcement group are all close to inner sheath；Described oversheath protective layer Material is polyamide；The material of described insulating barrier is organosilane crosslinked polyethylene or by weight, by following raw material structure Become: high density polyethylene (HDPE): 70～85 parts, ethylene-vinyl acetate copolymer: 10～20 parts, ethylene-tetrafluoroethylene copolymerization Thing: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, calcium titanate: 2～4 parts, titanium Acid bismuth: 2～4 parts, magnesium titanate: 2～4 parts, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

Seabed high voltage power cable described above, it is characterised in that the material of described metal screen layer is steel band or aluminum The mode that band or copper strips are in the way of longitudinally cladding or spiral is wrapped is coated on outside conductive unit；Longitudinally during cladding, tool Having overlapping overlap joint, lap width is 2～5mm, and lap-joint's PUR bonds, between lap-joint's steel band or between aluminium strip or between copper strips Peel strength minima is 1.6N/mm；When spiral is wrapped, front and back having overlapping overlap joint between spiral, lap width is 1～3mm.

Embodiment 2

Ask for an interview Fig. 3 and Fig. 4, seabed high voltage power cable, it is characterised in that it is by the metal screen set gradually from inside to outside Cover layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8, oversheath protective layer 9 are constituted, inside metal screen layer There is the conductive unit 1 of three two biphase circumscribed settings, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 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 cladding Conductor sheath 14 outside insulation screen is constituted, on arbitrary cross section, and the center of circle phase of the center of circle of conductor and insulating barrier Overlap, and the diameter of insulating barrier is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor by Gasket for packing 6, reinforcement 7 are constituted, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, fill out Filling rope to be one group with two and is constituted gasket for packing group, gasket for packing group and reinforcement are alternately distributed outside inner sheath, gasket for packing group and Reinforcement is all close to inner sheath；The material of described oversheath protective layer is polyamide；The material of described insulating barrier is silane Crosslinked polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethyl vinyl acetate Vinyl ester copolymers: 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, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

Embodiment 3

Ask for an interview Fig. 5 and Fig. 6, seabed high voltage power cable, it is characterised in that it is by the metal screen set gradually from inside to outside Cover layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, have inside metal screen layer three two biphase The conductive unit 1 of circumscribed setting, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is by conductor 11, squeezes Mould be coated on outside conductor insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding be coated on insulation screen it Outer conductor sheath 14 is constituted, and on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier Diameter is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 Constitute, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing is handed over reinforcement For being distributed in outside inner sheath, gasket for packing and reinforcement are all close to inner sheath；The material of described insulating barrier is crosslinked with silicane Polyethylene or by weight, is made up of following raw material: high density polyethylene (HDPE): 70～85 parts, ethene-vinyl acetate Ester 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, silicon dioxide: 3～5 Part, zirconium dioxide: 3～5 parts.

Embodiment 4

Ask for an interview Fig. 7 and Fig. 8, seabed high voltage power cable, it is characterised in that it is by the metal screen set gradually from inside to outside Cover layer 2, water blocking layer 3, tack coat 4, inner sheath 5, armor, oversheath 8 are constituted, have inside metal screen layer three two biphase The conductive unit 1 of circumscribed setting, three conductive units and metal screen layer phase inscribe；Described conductive unit 1 is by conductor 11, squeezes Mould be coated on outside conductor insulating barrier 12, be positioned at the insulation screen 13 outside insulating barrier, extrusion molding be coated on insulation screen it Outer conductor sheath 14 is constituted, and on arbitrary cross section, the center of circle of conductor coincides with the center of circle of insulating barrier, and insulating barrier Diameter is 1.5～5 times of conductor diameter and thickness of insulating layer minima is 1.5mm；Described armor is by gasket for packing 6, reinforcement 7 Constitute, reinforcement 7 by stiffener 71, be coated on the plastic layer 72 outside stiffener and constitute, gasket for packing with two for one Group constitutes gasket for packing group, and gasket for packing group and reinforcement are alternately distributed outside inner sheath, and gasket for packing group is all close to reinforcement Inner sheath；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, bismuth titanates: 2 ～4 parts, magnesium titanate: 2～4 parts, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts.

Seabed high voltage power cable described in arbitrary embodiment in above-mentioned embodiment 2-4, it is characterised in that institute Stating the material of metal screen layer 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 The outside that three conductive units are overall；Longitudinally during cladding, having overlapping overlap joint, lap width is 2～5mm, lap-joint's hot melt Glue bond, the peel strength minima 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.

Seabed high voltage power cable described in arbitrary embodiment in above-mentioned embodiment 2-4, it is characterised in that institute The material stating tack coat is polypropylene.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that described water blocking layer is for blocking water Band or non-woven fabrics or polyester band or aluminium-plastic tape.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that described insulation screen is Conductive plastics.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that described protective cover of conductor Material is high density polyethylene (HDPE) or medium density polyethylene or polrvinyl chloride or Low Density Polyethylene.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that the main body of described inner sheath Material is polyethylene or polrvinyl chloride.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that the material of described oversheath It is high density polyethylene (HDPE) or medium density polyethylene.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that the material of described gasket for packing For polypropylene or linear low density polyethylene or Low Density Polyethylene.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that the material of described stiffener Material is steel wire or fiberglass reinforced plastics or aramid yarn.

Seabed high voltage power cable described in any of the above-described embodiment, it is characterised in that the material of described plastic layer Material is polypropylene or linear low density polyethylene or Low Density Polyethylene or high density polyethylene (HDPE).

Seabed high voltage power cable in embodiment 1 of the present invention, it by the following method step be fabricated by:

Seabed high voltage power cable in embodiment 2 of the present invention, it by the following method step be fabricated by:

Seabed high voltage power cable in embodiment 3 of the present invention, it by the following method step be fabricated by:

Seabed high voltage power cable in embodiment 4 of the present invention, it by the following method step be fabricated by:

Through applicant's repeated tests, find that the optimization formula of insulating barrier is: insulating layer material by weight, by with Lower raw material is 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, silicon dioxide: 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 intensity >=75kV/mm；Specific insulation >=5 × 10¹⁵ρ_v/Ω·m；Dielectric strength ε_r≤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 × 10¹⁵ρ_v/Ω·m；Dielectric strength ε_r: 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 The electric power of defeated 500～1000 kV.

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. a seabed high voltage power cable armouring cable core, it is characterised in that it is by the metal screen set gradually from inside to outside Cover layer, water blocking layer, tack coat, inner sheath, armor composition, there is inside metal screen layer leading of three two biphase circumscribed settings Electric unit, three conductive units and metal screen layer phase inscribe；Described conductive unit is coated on outside conductor by conductor, extrusion molding Insulating barrier, be positioned at the insulation screen outside insulating barrier, extrusion molding is coated on what the conductor sheath outside insulation screen was constituted, 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 the 1.5～5 of conductor diameter Times and thickness of insulating layer minima be 1.5mm；Described armor is made up of gasket for packing, reinforcement, and reinforcement is by stiffener, bag Overlaying on the plastic layer outside stiffener to constitute, gasket for packing is one group with two and is constituted gasket for packing group, gasket for packing group and reinforcement Part is alternately distributed outside inner sheath, and gasket for packing group and reinforcement are all close to inner sheath；Described insulating barrier 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- TFE copolymer: 8～16 parts, magnesium hydroxide: 10～15 parts, antioxidant 1010: 3～5 parts, strontium titanates: 2～4 parts, metatitanic acid Calcium: 2～4 parts, bismuth titanates: 2～4 parts, magnesium titanate: 2～4 parts, silicon dioxide: 3～5 parts, zirconium dioxide: 3～5 parts；Described fill out The material filling rope is linear low density polyethylene.

A kind of seabed the most according to claim 1 high voltage power cable armouring cable core, it is characterised in that described water blocking layer For waterstop or non-woven fabrics or polyester band or aluminium-plastic tape.

3. according to a kind of seabed high voltage power cable armouring cable core described in claim 1 or claim 2, it is characterised in that Described insulation screen is conductive plastics.

A kind of seabed the most according to claim 3 high voltage power cable armouring cable core, it is characterised in that described conductor protects The material of layer is high density polyethylene (HDPE) or medium density polyethylene or polrvinyl chloride or Low Density Polyethylene.

A kind of seabed the most according to claim 4 high voltage power cable armouring cable core, it is characterised in that described inner sheath Material of main part be polyethylene or polrvinyl chloride.

A kind of seabed the most according to claim 5 high voltage power cable armouring cable core, it is characterised in that described reinforcement structure The material of part is steel wire or fiberglass reinforced plastics or aramid yarn；The material of described plastic layer is that polypropylene or low-density are gathered Ethylene or high density polyethylene (HDPE).

7. the seabed high voltage power cable manufacture method of armouring cable core, it is characterised in that it is to comprise the steps of

8. the seabed high voltage power cable manufacture method of armouring cable core, it is characterised in that it is to comprise the steps of

9. the seabed high voltage power cable manufacture method of armouring cable core, it is characterised in that it is to comprise the steps of

10. the seabed high voltage power cable manufacture method of armouring cable core, it is characterised in that it is to comprise the steps of