CN201853524U - Submarine cable for offshore oil platform electric power network - Google Patents

Abstract

The utility model provides a submarine cable for an offshore oil platform electric power network. The submarine cable is characterized in that the submarine cable is a composite type submarine cable which has the voltage stage of 35KV, has the cross section of 3*(150-250)mm<2>, is provide with a marine optical cable unit, and is provided with an optical fiber. The submarine cable leads a plurality of offshore platform power stations which are distributed on a plurality of offshore oil drilling platforms within a marine area to be connected with one another to form a mini type electric power system for grid-connected electricity generation. The submarine cable is excellent in the electrical performance, the physical performance and the chemical performance, so that the communication capability among a plurality of oil fields of the organized network is preferably reinforced, the effectiveness for the communication of the optical fiber can be effectively guaranteed, the anti-torque capability of the optical fiber is greatly reinforced, and the smooth communication of the electric power network is guaranteed.

Description

The submarine cable that power grid interlink of offshore oil platform is used

[technical field]

The utility model relates to submarine cable, particularly relates to the submarine cable that a kind of a plurality of offshore platforms power station that is connected at a plurality of offshore oil platforms is used.

[background technology]

At present, the development and utilization to marine resources is all constantly strengthened in countries in the world, particularly to the oil in coastal waters, the development and utilization of natural gas resource.Supply of electric power then is the important step during oil, air to open are sent out.Because marine each oil gas field is wide aparts all mostly, on the mining type, adopt a central platform to build a power station at present both at home and abroad mostly, are the mode of central platform and the power supply of each wellhead platform.This supply power mode exists power supply reliability deficiency, resource distribution repetition, underutilization of resources, operating cost and maintenance cost height, problem such as energy resource consumption is big.On the other hand, the existing long application history of using as electric power transfer and communication of submarine cable is comprising compound submarine cable.Traditional compound submarine cable is generally the mode of band optical fiber in the stainless steel sleeve pipe, the stainless steel sleeve pipe is fixed on delta-shaped region between cable and outer wire armoring by soft packing, in submarine cable stranding process, transportation, easily soft packing and optical fiber stainless loose sleeve pipe are got in the work progress between cable and damaged optical fiber, cause certain influence for follow-up electric power system construction.

[summary of the invention]

The utility model is intended to address the above problem, and provide a kind of electrical property and physics, chemical property excellence, help strengthening the ability to communicate between each oil field of networking, effectively guarantee the validity of optical-fibre communications, greatly strengthen the anti-twisting property of optical fiber, the submarine cable that the unimpeded power grid interlink of offshore oil platform of communication of guarantee electric power networking is used.

For achieving the above object, the submarine cable that the utility model provides a kind of power grid interlink of offshore oil platform to use is characterized in that, submarine cable is that electric pressure is 35KV, and the cross section is 3 * (150～250) mm ², and being provided with sea, the compound seabed cable of the band optical fiber of sea light cable unit, this submarine cable will be distributed in a plurality of offshore platforms power station that a plurality of offshore oil in the marine site creep on the platform and be connected to form a small-sized electric power system of generating electricity by way of merging two or more grid systems.

Submarine cable comprise three copper conductors of three-phase phase-splitting, respectively be compounded in three copper conductor outsides insulation and fish tail and waterproof layer, be coated on the insulation and the external protection of fish tail and waterproof layer outside, be filled in packed layer between external protection and insulation and the fish tail and waterproof layer, be arranged on the interior sea light cable unit of described packed layer, be installed at the armouring wire of external protection outside and be located at the serving of armouring wire outside.

Insulation and fish tail and waterproof layer comprise the semiconductive polyethylene screen that is compounded in three copper conductor outsides from inside to outside, crosslinked polyetylene insulated layer, semiconductive polyethylene water blocking layer, lead alloy cover and pe sheath.

External protection comprises the gluing layer of cloth and is compounded in the composite bed of gluing layer of cloth outside.

Packed layer is the modular hard packing that polypropylene material is made.

Sea light cable unit comprises two optical cables, and every optical cable is 12 cores, and optical cable is with the stainless steel sleeve pipe outward, and the stainless steel sleeve pipe is armoured steel wire.

Steel wire is the phosphatization steel wire of about two circle armourings, and the armouring direction of two circle phosphatization steel wires is opposite.

Submarine cable is embedded under the sea bed 0.5～2.5 meter, and wherein, marine part is imbedded under the sea bed 1.5～2.5 meters, imbeds under the sea bed 0.5～1.5 meter after the shoal part is with the protection of submarine cable protection of pipe.

The two ends of submarine cable respectively with two offshore platform power stations that will be connected on the 35KV switch cubicle connect.

Contribution of the present utility model is, it provides a kind of compound submarine cable with excellent electric performance and physics, chemical property and good communication function, this submarine cable can connect into a plurality of offshore platforms power station a grid-connected system, and can effectively guarantee the reliable and stable operation of this system.Simultaneously, submarine cable of the present utility model is owing to be compounded with the complete sea light cable unit of structure, makes it effectively to strengthen the ability to communicate between each oil field of networking, ensures the unimpeded and communication security of communication of electric power networking.

[description of drawings]

Fig. 1 is the small-sized electric power system schematic in sea of the present utility model.

Fig. 2 is a submarine cable radial structure cutaway view of the present utility model.

Fig. 3 is a sea light cable unit radial structure cutaway view of the present utility model.

[embodiment]

The following example is to further explanation of the present utility model and explanation, and the utility model is not constituted any limitation.

Consult Fig. 1, power grid interlink system of offshore oil platform of the present utility model comprises that a plurality of offshore oil creep into platform 10, a plurality of offshore platforms power station 20 and many submarine cables 30.Wherein, described a plurality of offshore oil creeps into platform 10 and creeps into platform for the oil that is distributed in a different location in the offshore sea waters.A plurality of offshore platforms power station 20 mutual distances are 10Km～60Km.Described a plurality of offshore platforms power station 20 is independent separately offshore platform power stations of creeping into platform power for the place offshore oil of having built up, they can be any known offshore platform power stations, therefore because of the utility model only relates to submarine cable, the concrete structure that offshore oil is crept into platform 10 and offshore platform power station 20 repeats no more.

Main points of the present utility model are that a plurality of offshore platforms power station 20 that a plurality of offshore oil that are distributed in the marine site are crept on the platform 10 is connected by submarine cable 30, forms a small-sized electric power system 100 of generating electricity by way of merging two or more grid systems.

In the present embodiment, the electric pressure of this submarine cable 30 is 35KV, and the cross section is 3 * 185mm ², be provided with sea light cable unit 35 in the cable, form sea, the compound seabed cable of band optical fiber.The structure of this submarine cable as shown in Figure 2; it comprises three copper conductors 31, insulation and fish tail and waterproof layer 32, external protection 33, packed layer 34, sea light cable unit 35, armouring wire 36 and serving 37; wherein; three copper conductors 31 are three copper conductors of three-phase phase-splitting, and it has bigger send electric energy power and less voltage drop.Be compounded with insulation and fish tail and waterproof layer 32 three copper conductor 31 outsides, this insulation and fish tail and waterproof layer comprise that insulation and fish tail and waterproof layer 32 comprise the semiconductive polyethylene screen 321 that is compounded in three copper conductor 31 outsides from inside to outside, crosslinked polyetylene insulated layer 322, semiconductive polyethylene water blocking layer 323, lead alloy cover 324 and pe sheath 325.Described semiconductive polyethylene screen 321, crosslinked polyetylene insulated layer 322, semiconductive polyethylene water blocking layer 323, lead alloy cover 324 and pe sheath 325 are compounded in the outside of three copper conductors 31 from inside to outside, form the multiple protective to copper conductor 31.Among Fig. 2; insulation and fish tail and waterproof layer 32 external packets at three copper conductors are covered with external protection 33; this external protection 33 comprises gluing layer of cloth 331 and composite bed 332; its three copper conductors that will be compounded with insulation and fish tail and waterproof layer 32 are coated and fixed; composite bed 332 is compounded in gluing layer of cloth 331 outsides, with the etch of anti-seawater.Among Fig. 2, between external protection 33 and insulation and fish tail and waterproof layer 32, be filled with packed layer 34, the modular hard packing that this packed layer 34 is made for polypropylene material, it can effectively protect sea light cable unit 35.In described packed layer 34, be provided with sea light cable unit 35; its structure as shown in Figure 3; this sea light cable unit comprises two optical cables 351; every optical cable is 12 cores; two optical cables are symmetricly set on the both sides of the copper conductor that is compounded with insulation and fish tail and waterproof layer 32; and fixing by packed layer 34, make submarine cable under the situation of gryposis, still can protect wherein that root optical fiber of a side.Outside optical cable, be with stainless steel sleeve pipe 352, with the etch of anti-seawater and play fixation.Steel wire 353 arranged in that the stainless steel sleeve pipe is armoured, this steel wire is the phosphatization steel wire of about two circle armourings, and wherein the diameter of steel wire of internal layer is bigger, and the armouring direction is a left-hand, the armouring direction of cover wire is a dextrad, and they can strengthen the hardness and the anti-button ability of optical fiber stainless steel sleeve pipe greatly.Be covered with oversheath 354 in steel wire 353 external packets, it is made by high-density polyethylene material, is used for exterior protection.

It is 360A that the maximum of above-mentioned submarine cable 30 allows to carry electric current.

As shown in Figure 1, the marine part of described submarine cable 30 is imbedded under the sea bed about 2 meters, adds the cable protection protection of pipe in suspicious reef district.The shoal part is imbedded following 1 meter of sea bed after with the protection of submarine cable protection of pipe.The two ends of this submarine cable 30 respectively with two offshore platform power stations 20 that will be connected on the 35KV switch cubicle connect.

Confirm through destructive tests such as sampling hot strength, bendings, the permission of this submarine cable uses maximum tension to reach 110kN, allow maximum lateral pressure 3000N/m, cable bending stiffness 0.15kg/mm2, allow minimum bending radius: in laying 2720 millimeters, 2040 millimeters in service, optical fiber residual attenuation≤0.02dB after the tension force bending.Its performance is much better than existing compound submarine cable.

Claims (9)

1. the submarine cable that power grid interlink of offshore oil platform is used is characterized in that, described submarine cable (30) is that electric pressure is 35KV, and the cross section is 3 * (150～250) mm ²And be provided with sea, the compound seabed cable of the band optical fiber of sea light cable unit (35), this submarine cable (30) will be distributed in a plurality of offshore platforms power station (20) that a plurality of offshore oil in the marine site creep on the platform (10) and be connected to form a small-sized electric power system (100) of generating electricity by way of merging two or more grid systems.

2. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 1 is used; it is characterized in that described submarine cable (30) comprises three copper conductors (31) of three-phase phase-splitting; be compounded in the insulation and the fish tail and waterproof layer (32) of three copper conductor outsides respectively; be coated on the outside external protection (33) of insulation and fish tail and waterproof layer (32); be filled in the packed layer (34) between external protection (33) and insulation and the fish tail and waterproof layer (32); be arranged on the sea light cable unit (35) in the described packed layer; be installed at the outside armouring wire (36) of external protection (33) and be located at the outside serving (37) of armouring wire (36).

3. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 2 is used; it is characterized in that described insulation and fish tail and waterproof layer (32) comprise the semiconductive polyethylene screen (321) that is compounded in three copper conductors (31) outside from inside to outside, crosslinked polyetylene insulated layer (322), semiconductive polyethylene water blocking layer (323), lead alloy cover (324) and pe sheath (325).

4. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 2 is used is characterized in that, described external protection (33) comprises gluing layer of cloth (331) and is compounded in the outside composite bed (332) of gluing layer of cloth (331).

5. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 2 is used is characterized in that, the modular hard packing that described packed layer (34) is made for polypropylene material.

6. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 2 is used, it is characterized in that described sea light cable unit (35) comprises two optical cables (351), every optical cable is 12 cores, optical cable is with stainless steel sleeve pipe (352) outward, and the stainless steel sleeve pipe is armoured steel wire (353).

7. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 6 is used is characterized in that, described steel wire (353) is the phosphatization steel wire of about two circle armourings, and the armouring direction of two circle phosphatization steel wires is opposite.

8. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 1 is used; it is characterized in that; described submarine cable (30) is embedded under the sea bed 0.5～2.5 meter; wherein; marine part is imbedded under the sea bed 1.5～2.5 meters, imbeds under the sea bed 0.5～1.5 meter after the shoal part is with the protection of submarine cable protection of pipe.

9. the submarine cable that power grid interlink of offshore oil platform as claimed in claim 6 is used is characterized in that, the two ends of described submarine cable (30) respectively with two offshore platform power stations (20) that will be connected on the 35KV switch cubicle connect.

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