CN205789265U

CN205789265U - Wisdom energy lake, crosslinked polyetylene insulated shallow sea power cable

Info

Publication number: CN205789265U
Application number: CN201620692657.3U
Authority: CN
Inventors: 陈东; 周锋; 兰阳灿
Original assignee: Far East Cable Co Ltd
Current assignee: Far East Cable Co Ltd
Priority date: 2016-07-01
Filing date: 2016-07-01
Publication date: 2016-12-07
Anticipated expiration: 2026-07-01

Abstract

The utility model discloses a kind of wisdom energy lake, crosslinked polyetylene insulated shallow sea power cable, be followed successively by cable core, semi-conductive buffer water-blocking band, metal sheath, sealing coat, tinsel armor and outer jacket from the inside to the outside；Described cable core includes at least insulated wire cores；Every insulated wire cores is followed successively by water-blocking conductor, semiconductive conductor shield, crosslinked polyetylene insulated layer and semi-conductive insulation shield layer from the inside to the outside；Outside described insulated wire cores, metal screen layer is set；Described water-blocking conductor is longitudinally to be coated with outside stranded metal monofilament at water blocking yarn, and hole to fill water-proofing powder.This utility model achieves the ability of closely water-bed continuation mode electric power transmission, can meet waterproof anti-corrosion and the requirement of seawater scouring hightension, it is possible to replace baroque conventional subsea cable.

Description

Wisdom energy lake, crosslinked polyetylene insulated shallow sea power cable

Technical field

This utility model relates to a kind of wisdom energy lake, crosslinked polyetylene insulated shallow sea power cable.

Background technology

China is an ocean big country, has marine site and 18000 kilometers of long coastlines, the edge of more than 300 ten thousand square kilometres Sea is distributed more than 6000 island, and be richly stored with offshore oil field and natural gas on continental shelf, shallow sea, and coastal is again China's warp Ji ecumene, domestic coastal island development is badly in need of electricity consumption, owing to construction power station cost is high, the cycle is long, is added fuel supply and be stranded The factors such as difficulty, so, power supply, communication (the most military secret communication) to middle-size and small-size island are required for being come by submarine cable Solve.

Along with the exploitation of shallow sea offshore wind-powered electricity generation, offshore island rises with the tourism of inland lake, connects continent and shallow sea wind The cabling requirements that field, limit, lake bank cross lake with island, the middle of a lake and mistake river is on the increase.These specific occasions, between each facility away from From as far as 3～5km, near distance is namely tens, between hundreds of rice, use traditional long length submarine cable connected mode to pass Transmission of electricity power and communication, just seem and cannot not waste one's talent on a petty job suitablely, and simultaneously in seashore tide Coastal Area, common cable is difficult to again meet prevent Water anticorrosion and the requirement of seawater scouring hightension, therefore lake, market urgent needs one Novel light shallow sea private cable.

At present, 35kV and following submarine cable mainly extrude lead alloy sheath based on split-phase, it is characterised in that dividing Phase cable core conductor longitudinal water-blocking combines with extruding metal set radially group water, but lead set is a heavily contaminated source, and environmental issue is tight Weight.Therefore for shallow sea and this specific occasion, lake, it is not suitable for using the lead sheath structure of original submarine cable.

Utility model content

The purpose of this utility model is to provide a kind of waterproof resistance to long period of soaking, corrosion-resistant environmental protection heavy metal free pollutes, electrically Good insulation preformance, tension, tensile energy are strong, be fixedly connected wisdom energy lake, the crosslinked polyetylene insulated shallow sea electric power laid Cable.

The technical scheme realizing this utility model purpose is wisdom energy lake, crosslinked polyetylene insulated shallow sea electric power electricity Cable, is followed successively by cable core, semi-conductive buffer water-blocking band, metal sheath, sealing coat, tinsel armor and outer jacket from the inside to the outside； Described cable core includes at least insulated wire cores；Every insulated wire cores is followed successively by water-blocking conductor, semiconductive conductor screen from the inside to the outside Cover layer, crosslinked polyetylene insulated layer and semi-conductive insulation shield layer；Outside described insulated wire cores, metal screen layer is set；Described block water Conductor is longitudinally to be coated with outside stranded metal monofilament at water blocking yarn, and hole to fill water-proofing powder.

Described insulated wire cores is many, and many arrange the filling that blocks water between insulated wire cores and semi-conductive buffer water-blocking band.

The first structure of described metal sheath is the aluminium-plastic tape being longitudinally coated on outside cable core and extrudes in plastic-aluminum multiple The composite construction of the layer of polyethylene sheath outside crossed belt；The second structure is that the corrugated aluminium metal being longitudinally coated on outside cable core protects Set, the layer of polyethylene sheath extruded outside the Colophonium of coating or PUR anticorrosive coat and anticorrosive coat outside metallic aluminium sheath compound Structure.

The first structure of described tinsel armor is the stainless of nonmagnetic a diameter of 3.15mm or 4.0mm of multiply The lay configuration of steel wire；The second structure is the structure that the zinc-coated wire of a diameter of 3.15mm or 4.0mm of multiply is stranded.

The structure of described outer jacket is the radial direction water resistant polyurea ethylene composite bed with the anticorrosion polypropylene fibre of outer layer of internal layer.

After have employed technique scheme, this utility model has following positive effect: (1) this utility model realizes Closely the ability of water-bed continuation mode electric power transmission, can meet waterproof anti-corrosion and the requirement of seawater scouring hightension, energy Enough replace baroque conventional subsea cable, simplify the manufacture process of cable, improve production efficiency, it is to avoid unnecessary one-tenth This waste.

(2) metal sheath of the present utility model uses aluminium-plastic tape integrated sheath or corrugated metal aluminium sheath, has excellent Good radial direction is waterproof, antiseptic property, the heavy metal lead sheath in alternative conventional subsea cable, it is to avoid use metal in producing The thermal processing method of extrusion, reduces the technology difficulty of cables manufacturing, metal sheath mechanical strength the most of the present utility model is high, Lightweight, during mounting and installation the most convenient favorably, and aluminum is not belonging to source of heavy metal pollution, to environment ring protection requirement High occasion is the most suitable.

(3) this utility model adds in cable conductor and cable core water blocking yarn and waterstop, at cable by outward Power is destroyed when there is infiltration fault, can be effectively blocked moisture and spread along cable axial direction, reduces moisture and immerses the length of cable Degree, can be continuing with after cable segmentation, minimizing cost allowance of increasing operation rate.

Accompanying drawing explanation

In order to make content of the present utility model be easier to be clearly understood, below according to specific embodiment and combine attached Figure, is described in further detail this utility model, wherein

Fig. 1 is the structural representation of this utility model embodiment 1, is single structure in figure.

Fig. 2 is the structural representation of this utility model embodiment 2, is three-core structure in figure.

Accompanying drawing is numbered:

Cable core 1, insulated wire cores 11, water-blocking conductor 11-1, semiconductive conductor shield 11-2, crosslinked polyetylene insulated layer 11-3, semi-conductive insulation shield layer 11-4, metal screen layer 12, the filling 13 that blocks water, semi-conductive buffer water-blocking band 2, metal sheath 3, sealing coat 4, tinsel armor 5, outer jacket 6.

Detailed description of the invention

See Fig. 1, the wisdom energy of the present embodiment lake, crosslinked polyetylene insulated shallow sea power cable, use single knot Structure, is followed successively by cable core 1, semi-conductive buffer water-blocking band 2, metal sheath 3, sealing coat 4, tinsel armor 5 and outer from the inside to the outside Sheath 6；Cable core 1 includes an insulated wire cores 11；Insulated wire cores 11 is followed successively by water-blocking conductor 11-1, semiconductive conductor from the inside to the outside Screen layer 11-2, crosslinked polyetylene insulated layer 11-3 and semi-conductive insulation shield layer 11-4；Outside insulated wire cores 11, metal screen is set Cover layer 12；Water-blocking conductor 11-1 is longitudinally to be coated with outside stranded metal monofilament at water blocking yarn, and hole to fill water-proofing powder.Metal protects The structure of layer 3 is longitudinally to be coated on the aluminium-plastic tape outside cable core 1 and the layer of polyethylene sheath extruding outside aluminium-plastic tape Composite construction；Or for the Colophonium coated outside the corrugated aluminium protective metal shell being longitudinally coated on outside cable core 1, metallic aluminium sheath or heat The composite construction of the layer of polyethylene sheath extruded outside melten gel anticorrosive coat and anticorrosive coat.The structure of tinsel armor 5 is many The lay configuration of the stainless steel silk of nonmagnetic a diameter of 3.15mm or 4.0mm of stock；Or be a diameter of 3.15mm of multiply or The structure that the zinc-coated wire of person 4.0mm is stranded.The structure of outer jacket 6 is that the radial direction water resistant polyurea ethylene of internal layer gathers with the anticorrosion of outer layer The composite bed of tacryl.

The cable of the present embodiment, carries out radially waterproof anti-corrosion test and winding and tension force bending examination according to national standard Testing, test result is satisfied by standard-required.Taking the length finished cable sample no less than 3 meters, bending will be except two ends after looping It is immersed in Nacl:Mgcl=7:1, concentration 30g/L, PH scope 7.0～8.0, temperature 40 DEG C ± 1 DEG C simulation sea with outer cable entirety Water 14 days, soaks and removes all coverings beyond insulation screen after terminating, detect by an unaided eye, the insulation shielding of sample of cable Layer outer surface is dried, without any visual steam and water stain vestige.(rated voltage 10kV is extremely to press JB/T 11167.1-2011 respectively 110kV crosslinked polyetylene insulated long length exchange submarine cable and adnexa Part I: test method and requirement) in the 8.8.2.1 the regulation with 8.8.2.2 is carried out, sample of cable does not produce insulation, metallic sheath and oversheath destroy and conductor or The phenomenon of armouring permanent deformation.

Seeing Fig. 2, the cable of the present embodiment and the difference of embodiment 1 are to use three-core structure.Three root insulated wire cores 11 And the filling 13 that blocks water is set between semi-conductive buffer water-blocking band 2.At every insulated wire cores 11 outer cladding metal screen layer 12, then It is stranded that employing dish winch carries out many cores, adds waterproofing rope as the filling 13 that blocks water in stranded intermediate space.

Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect Step describes in detail, be it should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this Utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. done, all should wrap Within being contained in protection domain of the present utility model.

Claims

1. wisdom energy lake, crosslinked polyetylene insulated shallow sea power cable, it is characterised in that: it is followed successively by cable core from the inside to the outside (1), semi-conductive buffer water-blocking band (2), metal sheath (3), sealing coat (4), tinsel armor (5) and outer jacket (6)；Described Cable core (1) includes at least insulated wire cores (11)；Every insulated wire cores (11) be followed successively by from the inside to the outside water-blocking conductor (11-1), Semiconductive conductor shield (11-2), crosslinked polyetylene insulated layer (11-3) and semi-conductive insulation shield layer (11-4)；Described absolutely Metal screen layer (12) is set outside edge core (11)；Described water-blocking conductor (11-1) is longitudinally cladding resistance outside stranded metal monofilament Water yarn, and at hole, fill water-proofing powder.

The wisdom energy the most according to claim 1 lake, crosslinked polyetylene insulated shallow sea power cable, it is characterised in that: Described insulated wire cores (11) is many, arranges the filling that blocks water between many insulated wire cores (11) and semi-conductive buffer water-blocking band (2) (13)。

The wisdom energy the most according to claim 2 lake, crosslinked polyetylene insulated shallow sea power cable, it is characterised in that: The structure of described metal sheath (3) is longitudinally to be coated on the outer aluminium-plastic tape of cable core (1) and extrude outside aluminium-plastic tape The composite construction of layer of polyethylene sheath；Or for being longitudinally coated on the outer corrugated aluminium protective metal shell of cable core (1), metallic aluminium sheath The composite construction of the layer of polyethylene sheath extruded outside the Colophonium of outer coating or PUR anticorrosive coat and anticorrosive coat.

The wisdom energy the most according to claim 3 lake, crosslinked polyetylene insulated shallow sea power cable, it is characterised in that: The structure of described tinsel armor (5) is the stranded of the stainless steel silk of nonmagnetic a diameter of 3.15mm or 4.0mm of multiply Structure；Or it is the stranded structure of the zinc-coated wire of a diameter of 3.15mm or 4.0mm of multiply.

The wisdom energy the most according to claim 4 lake, crosslinked polyetylene insulated shallow sea power cable, it is characterised in that: The radial direction water resistant polyurea ethylene that structure is internal layer of described outer jacket (6) and the composite bed of the anticorrosion polypropylene fibre of outer layer.