CN204537755U - The crosslinked polyetylene insulated optical fiber composite submarine power cable of three core 220kV - Google Patents

Abstract

The utility model discloses a three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable, which comprises a water-blocking conductor, a conductor shielding layer, a cross-linked polyethylene insulating layer, an insulating shielding layer, a semiconductive resistance water tape wrapping layer, Metal sheath, anti-corrosion layer, phase-separated inner sheath, filling layer, tape layer, inner cushion layer, armor layer, etc.; there is a tape layer outside the cable core, and an inner pad outside the tape layer layer, an armor layer is arranged outside the inner cushion layer, and an outer sheath layer is arranged outside the armor layer. This cable solves the demand for long-distance and high-power transmission, makes power and communication transmission "two cables into one", saves channel resources for submarine cable laying, and has the advantages of low cost and convenient operation and maintenance; it meets the needs of national energy construction and information security. It provides functions such as logistics information, marine data link, intelligent remote monitoring of resource development and protection of national marine rights and interests for national security and social security, and has a profound impact on the development of my country's marine economy.

Description

Three-core 220kV XLPE insulated optical fiber composite submarine power cable

technical field

The utility model belongs to the technical field of cable manufacturing, in particular to a three-core large-length 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable.

Background technique

With the rapid development of my country's ocean development and offshore island industry and tourism, the demand for power is increasing. The original medium-voltage submarine cable line can no longer meet the rapidly growing demand for power. The development of coastal wind power also requires more and more The high-voltage submarine cable transmits the electrical energy generated by the wind energy to the adjacent power grid. However, the development of marine economy also makes the channels or routes required for cables and other facilities in the offshore ocean more and more tense, and the route occupation fee is also higher and higher.

Optical fiber composite submarine power cables have technical difficulties recognized by the world's cable industry, such as complex system design, harsh and changeable use environments, and high product manufacturing equipment and process requirements. It is one of the key technologies in the field of marine development. The urgent need for information transmission.

At present, land cables with a rated voltage of 110kV and above adopt single-core structure, mainly due to the large cross-section and heavy weight of cables with a voltage level of 110kV and above. If a three-core structure is used, it will be restricted by factors such as equipment, process control, and materials. , and the cost of single-core cables is high, and the laying takes up a lot of resources.

With the implementation of the national ocean development strategy, the development and utilization of marine resources is rapidly increasing, especially the development of offshore wind power, which is the highlight of new energy development in my country and coastal countries around the world. Offshore wind power requires a large number of submarine cables to transmit clean energy from the sea to the onshore power grid. Ocean routing will become more and more tense. The State Oceanic Administration has realized the seriousness of this problem. In the long run, it requires all wind power companies to adopt a plan to save the area of ocean utilization in line with the idea of saving ocean routing. Emerging emerging marine industries. The three-core long-length 220kV submarine photoelectric composite cable not only saves production costs and investment, but also greatly saves submarine routing resources, and has broad development and application prospects. The three-core high-voltage submarine cable not only has a large capacity to transmit electric energy, but also occupies less routes and has low cost. Therefore, the three-core long-length 220kV submarine photoelectric composite cable is more and more favored by users.

Utility model content

Purpose of the utility model: The purpose of this utility model is to solve the deficiencies in the prior art and provide a three-core 220kV XLPE insulated optical fiber composite submarine power cable with long distance, high power transmission, less route occupation and low production cost .

Technical solution: A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable described in the utility model includes a plurality of water-blocking conductors, a conductor shielding layer, a cross-linked polyethylene insulating layer, an insulating shielding layer, a semiconducting Resistance water belt wrapping layer, metal sheath, anti-corrosion layer, phase-separated inner sheath, filling layer, wrapping layer, inner cushion layer, armored layer, outer sheath;

A conductor shielding layer is arranged outside the water-blocking conductor, a cross-linked polyethylene insulating layer is arranged outside the conductor shielding layer, an insulating shielding layer is arranged outside the cross-linked polyethylene insulating layer, and a semiconducting resistance water is arranged outside the insulating shielding layer. Tape-wound cladding, a metal sheath is set outside the semi-conductive resistance water belt wrapping, an anti-corrosion layer is set outside the metal sheath, a phase-separated inner sheath is set outside the anti-corrosion layer, and a The optical fiber unit and the filler are provided with a tape layer outside the cable core, an inner cushion layer outside the tape layer, an armor layer outside the inner cushion layer, and an outer sheath outside the armor layer ;

The optical fiber unit includes an optical fiber, a stainless steel tube, a PE inner sheath, a steel wire armor layer, and a PE outer sheath arranged sequentially from inside to outside.

As an optimization, the number of the water-blocking conductors is 3, and it is composed of metal-plated or non-metal-plated annealed copper conductors, and the inside of the conductors is wrapped with layered or longitudinally wrapped water-blocking tapes and wrapped with water-blocking yarns.

As an optimization, the conductor shielding layer is composed of a semi-conductive bundled water-blocking tape and an extruded semi-conductive material.

As an optimization, the insulating shielding layer adopts a semi-conductive layer that is directly extruded and closely combined with the insulating core.

As an optimization, the wrapping layer of the semi-conductive resistance water tape is directly covered on the insulation shielding layer with a 0.5mm thick water resistance tape.

As an optimization, the metal sheath is directly extruded on the wrapping layer of the semiconductive resistance hose by alloy lead.

As an optimization, the anti-corrosion layer is directly and uniformly coated on the lead sleeve with asphalt.

As an optimization, the phase-splitting inner sheath is directly extruded on the anti-corrosion layer or the metal sheath with polyethylene material or semi-conductive PE sheath material.

As an optimization, the filler is composed of filler strips or polypropylene filler ropes that are compatible with the cable insulation material and suitable for cable operation.

As an optimization, the tape layer is composed of tape with a thickness of 0.3 mm.

As an optimization, the inner cushion layer is directly wrapped on the tape layer with polypropylene fiber rope.

As an optimization, the armor layer is formed by winding galvanized round metal steel wires, and the outer sheath is formed by directly wrapping polypropylene fiber ropes on the armor layer, and evenly coated with asphalt.

Beneficial effects: the utility model has the following beneficial effects:

(1) The three-core large-length 220kV XLPE insulated optical fiber composite submarine power cable solves the demand for long-distance and high-power transmission, makes power and communication transmission "two cables in one", saves submarine cable laying channel resources, and With the advantages of low cost and convenient operation and maintenance, it has led the technological innovation of my country's offshore cable industry.

(2) The three-core large-length 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable fills the gap in China and breaks through the situation that my country's high-end cables are subject to the monopoly of foreign companies.

(3) The three-core large-length 220kV XLPE insulated optical fiber composite submarine power cable project conforms to the national resource development strategy, meets the needs of national energy construction and information security, and provides logistics information and marine data links for national security and social security , Intelligent remote monitoring of resource development and protection of national marine rights and interests have a profound impact on the development of my country's marine economy.

Description of drawings

Figure 1 is a schematic diagram of the cable structure of the present invention.

Fig. 2 is a structural schematic diagram of the optical fiber unit of the present invention.

Detailed ways

A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable as shown in Figure 1, including a plurality of water-blocking conductors 1, and a conductor shielding layer 2, a cross-linked polyethylene insulating layer 3, an insulating shielding layer 4, a half Conductive resistance water tape wrapping layer 5, metal sheathing layer 6, anti-corrosion layer 7, phase-separated inner sheathing layer 8, filling layer 9, cladding layer 10, inner cushioning layer 11, armoring layer 12, outer sheathing layer 13;

A conductor shielding layer 2 is arranged outside the water-blocking conductor 1, a cross-linked polyethylene insulating layer 3 is arranged outside the conductor shielding layer 2, an insulating shielding layer 4 is arranged outside the cross-linked polyethylene insulating layer 3, and an insulating shielding layer 4 is arranged outside the cross-linked polyethylene insulating layer 3. A semi-conductive resistance hose wrapping layer 5 is arranged outside, a metal sheath 6 is arranged outside the semi-conductive resistance hose wrapping layer 5, an anti-corrosion layer 7 is arranged outside the metal sheath 6, and an anti-corrosion layer 7 is arranged outside the anti-corrosion layer 7 The phase-splitting inner sheath 8 is provided with an optical fiber unit 14 and a filler 9 in the cable gap, a tape layer 10 is provided outside the cable core, and an inner cushion layer 11 is provided outside the tape layer 10. An armor layer 12 is arranged outside the cushion layer 11, and an outer sheath 13 is arranged outside the armor layer 12;

The optical fiber unit 14 includes an optical fiber 15 , a stainless steel tube 16 , a PE inner sheath 17 , a steel wire armor 18 , and a PE outer sheath 19 arranged sequentially from inside to outside.

As a further optimization of the above technical solution, the number of the water-blocking conductors 1 is three, and it is composed of annealed copper conductors with metallization or no metallization, and the inside of the conductors is layered or longitudinally wrapped with water-blocking tapes, and Wrap water-blocking yarn. The conductor shielding layer 2 is composed of a semi-conductive bundled water-blocking tape and an extruded semi-conductive material. The insulating shielding layer adopts a semi-conductive layer that is directly extruded and closely combined with the insulating core. The wrapping layer 5 of the semi-conductive resistance water tape is directly covered on the insulating shielding layer 4 with a water blocking tape with a thickness of 0.5 mm. The metal sheath 6 is directly extruded on the wrapping layer 5 of the semiconductive resistance hose by alloy lead. The anti-corrosion layer 7 is directly and evenly coated on the lead sleeve with asphalt. The phase-splitting inner sheath 8 is directly extruded on the anti-corrosion layer 7 or the metal sheath 6 using polyethylene material or semi-conductive PE sheath material. The filler 9 is composed of filler strips or polypropylene filler ropes that are compatible with the cable insulation material and suitable for cable operation. The tape layer 10 is composed of tape with a thickness of 0.3 mm. The inner cushion layer 11 is directly wrapped on the wrapping layer 10 with polypropylene fiber rope. The armor layer 12 is formed by winding galvanized round metal steel wires, and the outer sheath 13 is formed by directly wrapping polypropylene fiber ropes on the armor layer 12, and evenly coated with asphalt.

This three-core large-length 220kV XLPE insulated optical fiber composite submarine power cable solves the demand for long-distance and high-power transmission, makes power and communication transmission "two cables in one", saves submarine cable laying channel resources, and has a cost The advantages of low cost and convenient operation and maintenance have led the technological innovation of my country's offshore cable industry. The three-core large-length 220kV XLPE insulated optical fiber composite submarine power cable fills the gap in China and breaks through the situation that my country's high-end cables are subject to the monopoly of foreign companies. The three-core large-length 220kV XLPE insulated optical fiber composite submarine power cable project conforms to the national resource development strategy, meets the needs of national energy construction and information security, and provides logistics information, ocean data links, and resource development for national security and social security. Functions such as intelligent remote monitoring and protection of national marine rights and interests have had a profound impact on the development of my country's marine economy.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable, characterized in that it includes a plurality of water-blocking conductors (1), a conductor shielding layer (2), a cross-linked polyethylene insulating layer (3), Insulation shielding layer (4), semi-conductive resistance hose wrapping layer (5), metal sheathing layer (6), anti-corrosion layer (7), phase-separated inner sheathing layer (8), filling layer (9), wrapping layer (10), inner cushion layer (11), armor layer (12), outer sheath layer (13); A conductor shielding layer (2) is arranged outside the water-blocking conductor (1), a cross-linked polyethylene insulating layer (3) is arranged outside the conductor shielding layer (2), and a cross-linked polyethylene insulating layer (3) is arranged outside the cross-linked polyethylene insulating layer (3). Insulating shielding layer (4), a semiconducting resistance hose wrapping layer (5) is arranged outside the insulating shielding layer (4), and a metal sheath (6) is arranged outside the semiconducting resistance hose wrapping layer (5) , an anti-corrosion layer (7) is arranged outside the metal sheath (6), a phase-separated inner sheath (8) is arranged outside the anti-corrosion layer (7), and an optical fiber unit (14) and fillers are arranged in the cable-forming gap (9), a tape layer (10) is arranged outside the cable core, an inner cushion layer (11) is arranged outside the tape layer (10), and an armor layer (11) is arranged outside the inner cushion layer (11) 12), an outer sheath (13) is arranged outside the armor layer (12); The optical fiber unit (14) includes an optical fiber (15), a stainless steel tube (16), a PE inner sheath (17), a steel wire armor layer (18), and a PE outer sheath (19) sequentially arranged from inside to outside. 2. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the number of the water-blocking conductors (1) is 3, and the metal-plated or non-plated The metal layer is composed of annealed copper conductor, and the inside of the conductor is wrapped with layered or longitudinal water-blocking tape, and wrapped with water-blocking yarn. 3. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the conductor shielding layer (2) is made of semi-conductive bundled water-blocking tape and extruded semi-conductive Composition of conductive materials. 4. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the semi-conductive resistance water tape is wrapped around the cladding (5) with a 0.5mm thick water blocking tape directly Wrapped on the insulating shielding layer (4). 5. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the metal sheath (6) is directly extruded on the semiconducting resistance water by using alloy lead Tape around the cladding (5). 6. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the phase-separated inner sheath (8) is made of polyethylene material or semi-conductive PE sheath material Directly extruded on the anti-corrosion layer (7) or the metal sheath (6). 7. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the filler (9) is filled with materials compatible with the cable insulation material and suitable for cable operation Bar or polypropylene filled rope. 8. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the tape layer (10) is composed of tape with a thickness of 0.3 mm. 9. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the inner cushion layer (11) is directly wrapped around the tape layer ( 10) on. 10. A three-core 220kV cross-linked polyethylene insulated optical fiber composite submarine power cable according to claim 1, characterized in that: the armor layer (12) is wound with galvanized round metal steel wire, and the The outer sheath (13) is formed by directly wrapping polypropylene fiber ropes on the armor layer (12), and evenly coated with asphalt.