A kind of photoelectric composite submarine cable
Technical field
The utility model relates to cable, particularly, relates to a kind of photoelectric composite submarine cable.
Background technology
Along with carrying forward vigorously and the needs of national defense construction of the continuous enhancing of china's overall national strength and ocean development; The coastal people are in order to improve environment simultaneously; Improve production, quality of life; Demand to electric power, communication constantly strengthens, and is developmental research production length high pressure and superhigh pressure subsea power optical communication composite rope, the wide market prospects of the amount of providing.Particularly new oil gas field is constantly found in China shallow sea; Constantly increase as Bohai Sea Gulf, Eastern South China Sea and western last year verifying minable petroleum and natural gas storage capacity; Therefore, in recent years in extra large petroleum system will need a large amount of sea electric power cables, sea floor optoelectronic composite submarine cable, platform with power cable, control cable and signal cable.Still need import submarine cable and sea floor optoelectronic composite cable at present.
At present, in telecommunication cable, submarine cable comprises submarine communication cable and sea electric power cable.Wherein, submarine communication cable is mainly used in long distance communication net, as between the remote island and military installations over strait etc. than the communication traffic of important events, expensive, but privacy degrees is high; Laying of sea electric power cable apart from laying than telecommunication cable apart from much shorter; Be mainly used between the island, land, cross rivers or bay, from mutual connection between land connection drilling platforms or drilling platforms etc.; Can also be used for transmitting high-power electric energy under water; Be equal to the effect of underground power cable, just the application scenario is different with system of laying.
Seabed composite rope and extra large cable main application are that electric power is carried between continent and island, electric power transfer and offshore oil production platform practical applications between the island.The petroleum recovering platform is used extra large cable, particularly one of seabed composite rope most important applications field.Compare with extra large cable with electric power transfer, the petroleum recovering platform is lighter with the transferring electric power load of extra large cable, but exigent operational reliability.The petroleum recovering platform is mainly used in extra large cable:
(1) production platform is connected with the electric power transfer in continent, to avoid that very heavy generating equipment is installed on the production platform, reduces operation maintenance and fuel consumption.
(2) several production platforms are linked together, to share the energy output of enough and to spare.When forming the production platform looped network, in the time of guaranteeing contingency cable or power generating equipment fault, very high power supply reliability is arranged;
(3) straighforward operation seabed oil production equipment or unmanned production platform are with cost saving greatly.Recover the oil and to be called umbilical cable with cable in this remote control seabed, its characteristics are double wire armor with torsion balance, the less cable in multicore cross section is arranged, and the high-intensity flexible pipe that contains control cable, telecommunication cable or optical cable and carry gas liquid.
Usually, use the sea electric power cable electric energy transmitting, the aerial cable than same length is expensive undoubtedly, but more more economical than do the provincialism generating with little and isolated power station, use benefit in the offshore area more; The more country on island and river, this kind cable application is more extensive.
In practical application; Because the submarine cable engineering is known as the heavy construction of difficult and complicated by countries in the world, investigate from environment detection and marine physics, and the design of submarine cable, manufacturing and installation; All need use comparatively complicated technology; Thereby the manufacturing firm of submarine cable is few in number in the world, mainly contains countries such as Norway, Denmark, Japan, Canada, the U.S., Britain, France and Italy, and these countries also provide laying technology except that making.
In addition, because the use occasion of submarine cable is more special, environment is more abominable, and is all higher to performance demands such as water resistance, decay resistance and stretching resistance levels.So, when China uses heavy in section sea electric power cable, still need import.
But in realizing the process of the utility model, the inventor finds to exist at least in the prior art that water resistance is poor, poor corrosion resistance, stretching resistance poor performance, cost is high lays defectives such as difficulty is big with installation.
Summary of the invention
The purpose of the utility model is, to the problems referred to above, proposes a kind of photoelectric composite submarine cable, with realize that water resistance is good, corrosion resistance and good, the stretching resistance performance is good, cost is low lays the little advantage of difficulty with installing.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: a kind of photoelectric composite submarine cable; The photoelectric composite module that comprises axial setting, axially double-layer overlapping is wrapped at the peripheral water blocking layer of said photoelectric composite module, axially is socketed in the peripheral inner covering of said water blocking layer; Axially be socketed in the peripheral armour of said inner covering, and axially be socketed in the peripheral serving of said armour.
Further, said photoelectric composite module comprises three-core cable, in the stranded process of said three-core cable stranding, adds optical cable, and said optical cable is positioned at the angle position behind the three-core cable stranding, between three-core cable and water blocking layer, is filled with packed layer; Wherein: said three-core cable comprises first cable unit, second cable unit and the 3rd cable unit of the circumscribed setting of axial symmetry, and said optical cable comprises the first optical cable unit and the second optical cable unit; The said first optical cable unit, away from said second cable unit and with first cable unit and the circumscribed setting of the 3rd cable unit; The said second optical cable unit, away from said first cable unit and with second cable unit and the circumscribed setting of the 3rd cable unit.
Further; Said first cable unit is identical with the structure of the 3rd cable unit; Wherein: said first cable unit comprises the conductor of axial setting, axially is socketed in the peripheral conductor shield of said conductor, axially is socketed in the peripheral insulating barrier of said conductor shield; Axially be socketed in the peripheral insulator screen of said insulating barrier; Axially be socketed in the peripheral metal screen layer of said insulator screen, axially be socketed in the peripheral semiconductor waterstop of said metal screen layer, and axially be socketed in the peripheral comprehensive waterproof layer of said semiconductor waterstop.
Further; Said second cable unit comprises the conductor of axial setting, axially is socketed in the peripheral conductor shield of said conductor, axially is socketed in the peripheral insulating barrier of said conductor shield; Axially be socketed in the peripheral insulator screen of said insulating barrier; Axial overlap is wrapped at the peripheral semiconductor waterstop of said insulator screen, axially is socketed in the peripheral comprehensive waterproof layer of said semiconductor waterstop, axially is socketed in the peripheral inner sheath of said comprehensive waterproof layer.
Further, said armour is a zinc-coated wire, and the stranding of the armouring direction of said zinc-coated wire and first cable unit to the, three cable unit is in the opposite direction; Be coated with cable at the outer surface of said zinc-coated wire and use pitch.
Further, said serving comprises wrapped at the peripheral PP rope of armour, and the bituminous water-proof coating that is coated in said PP rope outer surface.
Further, the outer surface in said first cable unit to the, three cable unit is coated with multilayer pitch anticorrosive coat; Said packed layer comprises the non-hygroscopic material water-proof material.
Further, said conductor is the multiple layer of copper core conductor, when every layer of copper core conductor is stranded, vertically coats waterstop, twists into water blocking yarn at every layer of conductor core; Said waterstop is tightened through waterproofing rope, and said water blocking yarn is evenly distributed on around the center line of every layer of conductor.
Further, said comprehensive waterproof layer comprises the overlapping vertical aluminium-plastic tape that wraps in semiconductor waterstop periphery, and is extruded in said aluminium-plastic tape peripheral high density polyethylene, said aluminium-plastic tape and HDPE close adhesion.
Further, said insulating barrier is a waterproof tree type cross-linked polyethylene insulating material, and said metal screen layer is an annealed copper.
The photoelectric composite submarine cable of each embodiment of the utility model; Owing to comprise the photoelectric composite module of axial setting; Axially double-layer overlapping is wrapped at the peripheral water blocking layer of photoelectric composite module; Axially be socketed in the peripheral inner covering of water blocking layer, axially be socketed in the peripheral armour of inner covering, and axially be socketed in the peripheral serving of armour; Photoelectric composite module can carry out good combination with power cable and optical fiber cable, helps practicing thrift mass energy and raw material, reduces project cost, and reduces very complex installation and lay time and expense; Water blocking layer can improve the water resistance of photoelectric composite submarine cable, through the stretching resistance performance of armour raising photoelectric composite submarine cable, improves the decay resistance of photoelectric composite module through inner covering and serving; Thereby can overcome in the prior art that water resistance is poor, poor corrosion resistance, stretching resistance poor performance, cost is high lays the big defective of difficulty with installing, with realize that water resistance is good, corrosion resistance and good, the stretching resistance performance is good, cost is low lays the little advantage of difficulty with installing.
Further feature of the utility model and advantage will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through implementing the utility model.The purpose of the utility model can realize through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtain with other advantages.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the cross section of the utility model photoelectric composite submarine cable.
In conjunction with accompanying drawing, Reference numeral is following among the utility model embodiment:
The 1-conductor; The 2-conductor shield; The 3-insulating barrier; 4-insulator screen; The 5-metal screen layer; 6-semiconductor waterstop; 7-comprehensive waterproof layer; The 8-inner sheath; The 9-packed layer; The 10-water blocking layer; The 11-inner covering; The 12-armour; The 13-serving; 14-optical cable unit.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
According to the utility model embodiment, a kind of photoelectric composite submarine cable is provided.As shown in Figure 1; Present embodiment comprises the photoelectric composite module of axial setting; Axially double-layer overlapping is wrapped at the peripheral water blocking layer 10 of photoelectric composite module; Axially be socketed in the inner covering 11 of water blocking layer 10 peripheries, axially be socketed in the armour 12 of inner covering 11 peripheries, and the serving 13 that axially is socketed in armour 12 peripheries.
Wherein, above-mentioned armour 12 can be zinc-coated wire, is coated with cable at the outer surface of zinc-coated wire and uses pitch; Serving 13 comprises wrapped at peripheral polypropylene fibre (PP) rope of armour, and the bituminous water-proof coating that is coated in PP rope outer surface.
Here, adopt the good zinc-coated wire of tensile property, as the tension medium of photoelectric composite submarine cable, help guaranteeing photoelectric composite submarine cable in the time spent of doing that receives external force, the photoelectric composite submarine cable insulation itself does not stress.In addition, also can use general magnet wire as armour.
Further; In the above-described embodiments, above-mentioned photoelectric composite module comprises three-core cable, in the stranded process of three-core cable stranding, adds optical cable; Optical cable is positioned at the angle position behind the three-core cable stranding, between three-core cable and water blocking layer 10, is filled with packed layer 9; Wherein: three-core cable comprises first cable unit, second cable unit and the 3rd cable unit of the circumscribed setting of axial symmetry, and optical cable comprises the first optical cable unit (like optical cable unit 14) and the second optical cable unit; The first optical cable unit, away from second cable unit and with first cable unit and the circumscribed setting of the 3rd cable unit; The second optical cable unit, away from first cable unit and with second cable unit and the circumscribed setting of the 3rd cable unit.
Wherein, above-mentioned packed layer 9 can comprise the non-hygroscopic material water-proof material, to guarantee the block-water effect of photoelectric composite submarine cable; The stranding of the armouring direction of zinc-coated wire and first cable unit to the, three cable unit is in the opposite direction.
Here, in the three-core cable stranding process, should note protecting the cable sheath not to be damaged, stranding uses hard wood with mould, prevents to scratch cable; After the three-core cable stranding is intact, for reaching better block-water effect, can be outside three-core cable wrapped waterstop, waterstop can adopt double-layer overlapping wrapped.Three-core cable is because installation is laid conveniently, and when serving 13 (can be metallic sheath) and armour 12 (can be zinc-coated wire) two-terminal-grounding, the circulation of generation is little, and the loss of serving 13 and armour 12 is low.
In addition; Because seawater and have more intense corrosive nature with the material in seabed; In order to guarantee the decay resistance of photoelectric composite submarine cable, can be coated with multilayer (as three layers) pitch anticorrosive coat at the outer surface of above-mentioned first cable unit to the, three cable unit.
Particularly; In the above-described embodiments, above-mentioned first cable unit is identical with the structure of the 3rd cable unit, and wherein: first cable unit comprises the conductor 1 of axial setting; Axially be socketed in the conductor shield 2 of conductor 1 periphery; Axially be socketed in the insulating barrier 3 of conductor shield 2 peripheries, axially be socketed in the insulator screen 4 of insulating barrier 3 peripheries, axially be socketed in the metal screen layer 5 of insulator screen 4 peripheries; Axially be socketed in the semiconductor waterstop 6 of metal screen layer 5 peripheries, and the comprehensive waterproof layer 7 that axially is socketed in semiconductor waterstop 6 peripheries.
Here, metal screen layer 5 can be annealed copper, and the copper strips of annealed copper is wrapped evenly, the thermal expansion the when tension force after wrapped can satisfy later cable and moves.In order to guarantee the block-water effect of cable, can adopt overlapping wrapped mode in the periphery of metal screen layer 5, wrapped one deck waterstop.
In the above-described embodiments, insulating barrier 3, insulator screen 4 and metal screen layer 5 are extruded with the three-layer co-extruded mode of interior screen, insulation and outer screen simultaneously, form three-layer co-extruded insulation.Wherein, insulating material can adopt waterproof tree Insulation Material, and interior screen material can adopt not peelable shielding material with outer screen material, reaches good contact the between outer screen material and the insulating material with screen material in guaranteeing.
Above-mentioned second cable unit comprises the conductor 1 of axial setting; Axially be socketed in the conductor shield 2 of conductor 1 periphery; Axially be socketed in the insulating barrier 3 of conductor shield 2 peripheries, axially be socketed in the insulator screen 4 of insulating barrier 3 peripheries, the wrapped semiconductor waterstop 6 of axial overlap in insulator screen 4 peripheries; Axially be socketed in the comprehensive waterproof layer 7 of semiconductor waterstop 6 peripheries, axially be socketed in the inner sheath 8 of comprehensive waterproof layer 7 periphery.
Wherein, above-mentioned conductor 1 is the multiple layer of copper core conductor, when every layer of copper core conductor is stranded, vertically coats waterstop, twists into water blocking yarn at every layer of conductor core, to realize vertical water resistance of conductor; Waterstop is tightened through waterproofing rope, and water blocking yarn is evenly distributed on around the center line of every layer of conductor.
Here, conductor can adopt and press the round conductor structure, to press mode layer by layer, when drawing, adopts anti-dandruff device in time to remove the copper scale that produces in the drawing process, makes conductor 1 smooth surface not have greasy dirt, no burr.Conductor 1 internal layer vertically coats waterstop, and waterstop can adopt overlapping vertical coating, and waterstop external application waterproofing rope is tightened, and guarantees that waterstop does not deform when pressing; The heart yearn of conductor 1 adopts and vertically gets into water blocking yarn synchronously with conductor, and water blocking yarn is evenly distributed on around the center line.
Comprehensive waterproof layer 7 comprises the overlapping vertical aluminium-plastic tape that wraps in semiconductor waterstop periphery, and is extruded in the peripheral high density polyethylene (HDPE) (being HDPE) of aluminium-plastic tape, aluminium-plastic tape and HDPE close adhesion; Radially reliable waterproof when helping guaranteeing the photoelectric composite submarine cable long-time running is to overcome defective such as plumbous cover watertight composition creep-resistant property difference.
Particularly, aluminium-plastic tape can adopt vertical packet mode, the overlapping 10mm that is not less than, embossing degree of depth 1-2mm; Can use the blowing welding gun to continue to blow hot gas, the plastic layer of plastic-aluminum combined belt surface melted, and press, the overlapping part of aluminium-plastic tape is bonded together through mould to the lap of aluminium-plastic tape; Simultaneously, can extrude a hdpe layer,, can make aluminium-plastic tape and HDPE close adhesion, thereby play waterproof action through the plastics of plastic-aluminum combined belt surface at the outer surface of aluminium-plastic tape.
Insulating barrier 3 is a waterproof tree type cross-linked polyethylene insulating material, helps reducing the possibility that photoelectric composite submarine cable takes place in long-term running by the water tree.
The photoelectric composite submarine cable of the foregoing description is mainly used in powerful electric energy and the transmission communicate optical signal usefulness of transmission between continent and island, island and island, continent and ocean stone platform, oil platform and the oil platform; This photoelectric composite submarine cable can be realized the good combination of power cable and optical fiber cable, can practice thrift mass energy and raw material, helps significantly reducing project cost and reduces very complex installation and lay time and expense.
To the photoelectric composite submarine cable of above-mentioned each embodiment, carry out cable full performance test and detection (comprising cable water permeabillity test, stretching resistance flexing test and corrosion resistance test etc.), all satisfy the design objective requirement.Simultaneously, send national electric wire quality supervision and test test center to carry out type approval test this photoelectric composite submarine cable, test index meets design requirement.
The photoelectric composite submarine cable of above-mentioned each embodiment compared with prior art, has the following advantages:
(1) comprehensive waterproof layer (also being radially watertight composition) the lead cover that do not adopt production technology to have relatively high expectations relatively, but adopt the aluminum plastic composite belt longitudinal bag to extrude the way of high density PE outward simultaneously; Help solving the bad characteristics of aluminium cover creep-resistant property; The water resistance of photoelectric composite submarine cable also is improved simultaneously, and production technology is simpler, and is not high to equipment requirements, and environment is safe from harm;
(2) compare existing extra large cable, photoelectric composite submarine cable has increased the inner sheath that one deck extrudes, and making has a layer insulating between single-core cable and the armour, make between armour and the aluminium-plastic tape and isolate, and helps strengthening the water resistance of photoelectric composite submarine cable.
In sum; The photoelectric composite submarine cable of each embodiment of the utility model; Owing to comprise the photoelectric composite module of axial setting, axially double-layer overlapping is wrapped at the peripheral water blocking layer of photoelectric composite module, axially is socketed in the peripheral inner covering of water blocking layer; Axially be socketed in the peripheral armour of inner covering, and axially be socketed in the peripheral serving of armour; Photoelectric composite module can carry out good combination with power cable and optical fiber cable, helps practicing thrift mass energy and raw material, reduces project cost, and reduces very complex installation and lay time and expense; Water blocking layer can improve the water resistance of photoelectric composite submarine cable, through the stretching resistance performance of armour raising photoelectric composite submarine cable, improves the decay resistance of photoelectric composite module through inner covering and serving; Thereby can overcome in the prior art that water resistance is poor, poor corrosion resistance, stretching resistance poor performance, cost is high lays the big defective of difficulty with installing, with realize that water resistance is good, corrosion resistance and good, the stretching resistance performance is good, cost is low lays the little advantage of difficulty with installing.
What should explain at last is: the above is merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.