The sea electric power cable that photoelectricity is compound
Technical field
The present invention relates to a kind of submarine cable technical field that is used for, especially refer to the sea electric power cable that a kind of sea floor optoelectronic is compound.
Background technology
Existing a kind of patent No. discloses a kind of structure for the Chinese utility model patent that the CN200820034047.X name is called " seabed fiber compound power cable "; Its structure comprises conductor, insulating barrier, water blocking layer, metal sheath layer, inner restrictive coating, inner cushion layer, external sheath layer, armour, serving; Be outside equipped with insulating barrier at conductor; Be outside equipped with water blocking layer at insulating barrier, be outside equipped with metal sheath layer, be outside equipped with inner restrictive coating at metal sheath layer at water blocking layer; The sea electric power cable most external is a serving, and armour is housed in the serving, and armour adopts steel wire, and inner cushion layer is housed in the armour; Device has the seabed fiber unit in the power cable core gap, seabed in inner cushion layer.But its shortcoming is conductor not to be improved, and the conductor of this cable mostly adopts copper, because of copper had both satisfied good electrical conductivity; Can satisfy cable again and have enough tensile strength; But,, and adopt other material not enough because of tensile strength so cost of manufacture is higher because of the copper price is high; Therefore develop and a kind ofly can satisfy good electrical conductivity, the submarine cable that has enough tensile strength again is ready-made to be the interesting gesture of a kind of development.
Summary of the invention
Technical problem to be solved by this invention is to provide to above-mentioned prior art present situation that a kind of cost of manufacture is low, cable tensile strength reaches the compound sea electric power cable of the qualified photoelectricity of conductivity greatly.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the sea electric power cable that this photoelectricity is compound; Include core, screen, insulating barrier, insulator screen and sheath, armouring inner cushion layer, armour and armouring external protection; Said core, screen, insulating barrier, insulator screen and sheath set gradually the fiber unit that forms from the inside to the outside; Said fiber unit has three groups also to stack together each other; Said armouring inner cushion layer, armour and armouring external protection are wrapped in the inside with three groups of fiber units from the inside to the outside successively; The space is provided with filler between three groups of fiber units and armouring inner cushion layer; It is characterized in that: said core is made up of steel wire lead and aluminum conductor, and said steel wire lead is positioned at the center of core, and steel wire lead and aluminum conductor are the formed core of steel reinforced aluminium conductor structure.
As improvement, said steel reinforced aluminium conductor structure is meant: some strands of steel wire leads are positioned at the center, and some strands of aluminum conductors are outside the steel wire lead and be twisted into the steel reinforced aluminium conductor conductor each other.
As improvement, said screen comprises semi-conductor electricity band and conductor shield, and core is wrapped in the semi-conductor electricity band, and the semi-conductor electricity band is wrapped in the conductor shield.
Improve again; Said insulator screen comprises insulation screen, semiconductive water-blocking buffer layer, copper strips lapping layer, semiconductive water-blocking buffer layer; And said sheath comprises plumbous cover and insulation inner cushion layer, arranges routine position for being followed successively by insulation screen, semiconductive water-blocking buffer layer, copper strips lapping layer, semiconductive water-blocking buffer layer, plumbous cover and insulation inner cushion layer from the inside to the outside.
Improve, said armouring inner cushion layer is preferably the pitch inner cushion layer of polypropylene rope as inner reinforcement again.
Improve, said armouring external protection can be the pitch outerwrap layer of polypropylene rope as inner reinforcement again.
Improve, said armour is made up of many galvanized steel wire ropes again, and said galvanized steel wire rope is positioned at the structure of same periphery distribution with cross section and the protective layer that forms.
Improve, said filler can be and gathers third ethene rope again.
Compared with prior art, the present invention adopts core to be made up of steel wire lead and aluminum conductor, and said steel wire lead is positioned at the center of core, and steel wire lead and aluminum conductor are twisted into the formed core of steel reinforced aluminium conductor structure jointly.The advantage of this structure is; Replaced copper by aluminium, not only provided cost savings, and the also complete conformance with standard of conductivity; And the twisted wire of the strand of steel wire lead wherein aluminum conductor; Can exempt to mend the not enough problem of aluminum conductor tensile strength again, so the cable that the present invention processes had both reduced production cost, and conductivity and tensile strength standard all up to specification.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structure for amplifying sketch map of fiber unit A among Fig. 1;
Fig. 3 is the enlarged drawing of I portion among Fig. 2;
Fig. 4 is the enlarged drawing of II portion among Fig. 2;
Fig. 5 is the cutaway view of the recombination line cross section of steel wire alclad among Fig. 1.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Like Fig. 1, Fig. 3, Fig. 4 and shown in Figure 5; The sea electric power cable that the photoelectricity of present embodiment is compound; Include core 1, screen 2, insulating barrier 3, insulator screen and sheath 4, armouring inner cushion layer 5, armour 6 and armouring external protection 7; Said core 1, screen 2, insulating barrier 3, insulator screen and sheath 4 set gradually the fiber unit A that forms from the inside to the outside; Said fiber unit A has three groups also to stack together each other; Said armouring inner cushion layer 5, armour 6 and armouring external protection 7 are wrapped in the inside with three groups of fiber unit A from the inside to the outside successively, and the space is provided with filler 8 between three groups of fiber unit A and armouring inner cushion layer 5, and filler 8 is restricted for gathering third ethene.Core 1 is that wherein steel wire lead 11 is positioned at the center of core 1 by the mutual stranded conductor that forms of blend of many aluminum conductors and the steel wire lead that can increase cable tensile strength 11 strand aluminum conductors 12.Above-mentioned screen 2 comprises semi-conductor electricity band 22 and conductor shield 21, sees shown in Figure 4ly, and core 1 is wrapped in the semi-conductor electricity band 22, and semi-conductor electricity band 22 is wrapped in the conductor shield 21.And
Above-mentioned insulator screen comprises insulation screen 41, semiconductive water-blocking buffer layer 42, copper strips lapping layer 43, semiconductive water-blocking buffer layer 42; And said sheath 4 comprises plumbous cover 44 and insulation inner cushion layer 45, arranges routine position for being followed successively by insulation screen 41, semiconductive water-blocking buffer layer 42, copper strips lapping layer 43, semiconductive water-blocking buffer layer 42, plumbous cover 44 and insulation inner cushion layer 45 from the inside to the outside.
See 2 with shown in Figure 3.And armouring inner cushion layer 5 is the pitch inner cushion layer of polypropylene rope as inner reinforcement; And the armouring external protection is the pitch outerwrap layer of polypropylene rope as inner reinforcement; Said armour 6 is made up of many galvanized steel wire ropes 61, and said galvanized steel wire rope 61 is positioned at the structure that same periphery distributes and the protective layer that forms with cross section.