CN215417660U - Seven-bundle wet-type static bundling submarine cable - Google Patents

Abstract

The utility model discloses a seven-bundle wet-type static cluster submarine cable which comprises a single-core conductor unit, wherein three bundles of the single-core conductor unit are arranged in an outer protective layer in a triangular manner to form a three-core conductor unit, and a filling unit for rounding the section of the three-core conductor unit is arranged between the single-core conductor unit and the outer protective layer; the three-core conductor unit is arranged in the armor layer in a hexagon shape to form the submarine cable, and an optical fiber unit and a filling unit for rounding the cross section of the submarine cable are arranged between the three-core conductor unit and the armor layer; the armor layer sequentially comprises a belting layer, a cable inner sheath, a steel wire armor layer and an outer tegument layer from inside to outside. The utility model aims to provide a cluster submarine cable which can reduce the occupation of the effective area of a newly-built platform for power supply.

Description

Seven-bundle wet-type static bundling submarine cable

Technical Field

The utility model relates to the technical field of ocean engineering, in particular to a seven-bundle wet-type static bundling submarine cable.

Background

Along with continuous development of Bohai sea oil, the specific gravity of a marginal oil field development project is gradually increased, more and more marginal oil fields with low capacity and poor benefit need to be used, the conventional 'three-one' development mode of the marginal oil field cannot be economically and efficiently developed, and a new idea, a new technology, deep cost reduction and efficiency improvement are urgently needed to be adopted in engineering development; meanwhile, many Bohai sea oil fields are originally designed as unattended platforms, people are required to stay on the oil fields after the oil fields are put into operation, the conventional needs to be broken urgently, and the unmanned oil fields are really realized. The isolation transformer is required to be additionally arranged on a supporting platform for supplying power to a newly built platform through a conventional submarine cable, a main transformer, corresponding equipment such as medium-voltage distribution, low-voltage distribution, an electric submersible pump frequency converter and an electric submersible pump transformer are required to be arranged on a wellhead platform, and matched rooms such as a main switch room, an electric submersible pump control room, a main transformer room, an electric submersible pump transformer room, a middle control room, a carbon dioxide room and a battery room are arranged. This directly leads to the increase of well head platform area, platform weight increase, offshore construction resources increase, finally leads to the engineering cost increase. Therefore, a cluster submarine cable capable of reducing the occupation of the effective area of a newly built platform for power supply is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a cluster submarine cable capable of reducing the occupied effective area of a newly-built platform for power supply.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a seven-bundle wet-type static cluster submarine cable comprises a single-core conductor unit, wherein three bundles of the single-core conductor unit are arranged in an outer protective layer in a triangular mode to form a three-core conductor unit, and a filling unit for enabling the cross section of the three-core conductor unit to be round is arranged between the single-core conductor unit and the outer protective layer; the three-core conductor unit is arranged in the armor layer in a hexagon shape to form the submarine cable, and an optical fiber unit and a filling unit for rounding the cross section of the submarine cable are arranged between the three-core conductor unit and the armor layer; the armor layer sequentially comprises a belting layer, a cable inner sheath, a steel wire armor layer and an outer tegument layer from inside to outside.

Furthermore, the single-core conductor unit sequentially comprises a water-blocking copper conductor, a conductor shielding layer, an insulating shielding layer, a semi-conductive water-blocking tape, a copper strip, the semi-conductive water-blocking tape and a split-phase sheath from inside to outside, and the sectional area of the water-blocking copper conductor is 35mm²The conductor shielding layer is made of semi-conductive XLPE with a thickness of 0.8mm, and the insulating layer is made of water-resistant materialXLPE is insulating, and thickness is 2.5mm, and the insulation screen layer comprises semiconduction XLPE, and thickness is 2.5mm, and semiconduction water-blocking tape thickness is 0.3mm, and copper strips thickness is 0.13mm, and the split phase sheath comprises the HDPE sheath, and thickness is 2.5 mm.

Furthermore, the outer protective layer and the wrapping layer are both formed by cable wrapping tapes, and the thickness of the cable wrapping tapes is 0.3 mm.

Further, the cable inner sheath is made of HDPE and is 4mm thick.

Furthermore, the steel wire armor layer is formed by galvanized low-carbon steel wires and has the thickness of 5 mm.

Furthermore, the outer tegument layer is provided with two layers, and the two outer tegument layers are respectively made of asphalt and PP materials.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model has seven bunches of three-core conductor units, 6 bunches of conductor units directly supply power to the electric submersible pump at the well head of a newly-built platform respectively, and 1 bunch of conductor units independently supply power to equipment except the electric submersible pump. The utility model solves the problems of large platform scale and high development investment caused by newly built platform power supply. The submarine cable supplies power to the newly-built platform, meanwhile, the electric submersible pump ground equipment on the newly-built platform can be arranged on the existing platform, the underground electric pumps of the newly-built platform are directly supplied with power one by one from the existing platform, the electric power system on the newly-built platform is simplified to the maximum extent, most of electric equipment and rooms on the newly-built platform are eliminated, and therefore the area and the weight of the upper module of the newly-built platform are reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of a three-core conductor unit according to the present invention;

FIG. 4 is a schematic view showing the structure of a single core conductor unit according to the present invention;

FIG. 5 is a schematic view of the construction of the armor of the present invention;

reference numerals:

1-three-core conductor unit, 2-optical fiber unit, 3-filling unit, 4-armor layer, 5-single-core conductor unit, 6-outer protective layer, 7-belting layer, 8-cable inner sheath, 9-steel wire armor layer, 10-outer coating layer, 51-water-blocking copper conductor, 52-conductor shielding layer, 53-insulating layer, 54-insulating shielding layer, 55-semi-conductive water-blocking tape, 56-copper strip and 57-split-phase sheath.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, the seven-bundle wet static cluster submarine cable comprises three single-core conductor units 5, wherein the three single-core conductor units 5 are arranged in an outer sheath 6 in a triangular manner to form a three-core conductor unit 1, and a filling unit 3 for rounding the cross section of the three-core conductor unit 1 is arranged between the single-core conductor unit 5 and the outer sheath 6; the three-core conductor unit 1 is provided with seven bundles of hexagons arranged in the armor layer 4 to form the submarine cable, and an optical fiber unit 2 and a filling unit 3 for rounding the cross section of the submarine cable are arranged between the three-core conductor unit 1 and the armor layer 4; the armor layer 4 sequentially comprises a belting layer 7, a cable inner sheath 8, a steel wire armor layer 9 and an outer tegument layer 10 from inside to outside. The single-core conductor unit 5 sequentially comprises a water-blocking copper conductor 51, a conductor shielding layer 52, an insulating layer 53, an insulating shielding layer 54, a semi-conductive water-blocking tape 55, a copper strip 56, the semi-conductive water-blocking tape 55 and a split-phase sheath 57 from inside to outside, and the sectional area of the water-blocking copper conductor 51 is 35mm²The conductor shielding layer 52 is composed of semi-conductive XLPE, the thickness is 0.8mm, the insulating layer 53 is composed of water-resistant XLPE insulation, the thickness is 2.5mm, the insulating shielding layer 54 is composed of semi-conductive XLPE, the thickness is 2.5mm, the thickness of the semi-conductive water-blocking tape 55 is 0.3mm, the thickness of the copper strip 56 is 0.13mm, the split-phase sheath 57 is composed of an HDPE sheath, and the thickness is 2.5 mm; the outer protective layer 6 and the belting layer 7 are both formed by cable belting, and the thickness is 0.3 mm; the cable inner sheath 8 is made of HDPE and is 4mm thick; the steel wire armor layer 9 is made of galvanized low-carbon steel wires and is 5mm thick; the outer tegument layer 10 is provided with two layers, and the two outer teguments are respectively made of asphalt and PP materials.

The utility model has seven bunches of three-core conductor units, 6 bunches of conductor units directly supply power to the electric submersible pump at the well head of a newly-built platform respectively, and 1 bunch of conductor units independently supply power to equipment except the electric submersible pump. In order to prevent the optical fiber units 2 in the submarine cable from being damaged, the optical fiber units 2 may be disposed in more than two submarine cables, and the optical fiber units 2 are separately disposed between seven bundles of three-core conductor units. The insulating layer 53 is made of water-resistant XLPE insulation, and is more economical and environment-friendly compared with a lead sheath commonly used in a submarine cable.

The utility model solves the problems of large platform scale and high development investment caused by newly built platform power supply. The submarine cable supplies power to the newly-built platform, meanwhile, the electric submersible pump ground equipment on the newly-built platform can be arranged on the existing platform, the underground electric pumps of the newly-built platform are directly supplied with power one by one from the existing platform, the electric power system on the newly-built platform is simplified to the maximum extent, most of electric equipment and rooms on the newly-built platform are eliminated, and therefore the area and the weight of the upper module of the newly-built platform are reduced. With the great reduction of the weight of the upper module, the jacket can be optimized to be a wellhead protection frame, and even, the mode that the upper module is supported by the riser sleeve is directly adopted. The simplification and the unmanned of a newly built platform are really realized, the investment cost of engineering facilities is greatly reduced, and the development of marginal oil fields is promoted.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. The utility model provides a seven static sea cables tied in a bundle of wet-type, includes single core conductor unit (5), its characterized in that: the single-core conductor unit (5) is arranged in the outer protective layer (6) in a triangular shape to form a three-core conductor unit (1), and a filling unit (3) which enables the section of the three-core conductor unit (1) to be round is arranged between the single-core conductor unit (5) and the outer protective layer (6); the three-core conductor unit (1) is provided with seven hexagonal bundles and arranged in the armor layer (4) to form the submarine cable, and an optical fiber unit (2) and a filling unit (3) for rounding the cross section of the submarine cable are arranged between the three-core conductor unit (1) and the armor layer (4); the armor layer (4) sequentially comprises a belting layer (7), a cable inner sheath (8), a steel wire armor layer (9) and an outer tegument layer (10) from inside to outside.

2. The seven-strand wet static bunched sea cable of claim 1, wherein: the single-core conductor unit (5) sequentially comprises a water-blocking copper conductor (51), a conductor shielding layer (52), an insulating layer (53), an insulating shielding layer (54), a semi-conductive water-blocking tape (55), a copper strip (56), the semi-conductive water-blocking tape (55) and a split-phase sheath (57) from inside to outside, and the sectional area of the water-blocking copper conductor (51) is 35mm²The conductor shielding layer (52) is composed of semi-conductive XLPE, the thickness of the conductor shielding layer is 0.8mm, the insulating layer (53) is composed of waterproof XLPE, the thickness of the insulating layer is 2.5mm, the insulating shielding layer (54) is composed of semi-conductive XLPE, the thickness of the insulating layer is 2.5mm, the thickness of the semi-conductive water blocking tape (55) is 0.3mm, the thickness of the copper strip (56) is 0.13mm, the split-phase sheath (57) is composed of an HDPE sheath, and the thickness of the split-phase sheath is 2.5 mm.

3. The seven-strand wet static bunched sea cable of claim 1, wherein: the outer protective layer (6) and the belting layer (7) are both formed by cable lapping belts, and the thickness of the cable lapping belts is 0.3 mm.

4. The seven-strand wet static bunched sea cable of claim 1, wherein: the cable inner sheath (8) is made of HDPE and is 4mm thick.

5. The seven-strand wet static bunched sea cable of claim 1, wherein: the steel wire armor layer (9) is composed of galvanized low-carbon steel wires and is 5mm thick.

6. The seven-strand wet static bunched sea cable of claim 1, wherein: the outer tegument layer (10) is provided with two layers, and the two outer teguments are respectively made of asphalt and PP materials.

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