Light submarine cable suitable for deep sea wind power generation

Abstract

The utility model relates to the technical field of cables, and particularly discloses a light submarine cable suitable for deep sea wind power generation, which comprises a water-blocking conductor layer, the cross section of the water-blocking conductor layer is circular, the water-blocking conductor layer is formed by twisting a plurality of single-wire conductors, and water-blocking agents are filled among single wires. And a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal sheath, an inner sheath, an armor layer and an outer coating layer are sequentially arranged on the outer side of the water-blocking conductor layer. According to the submarine cable, the water-blocking conductor layer is arranged, and the conductor shielding layer, the insulating layer, the insulating shielding layer, the metal sheath, the inner sheath, the armor layer and the outer coating layer are sequentially arranged on the outer side of the water-blocking conductor layer, so that the stability of the overall structure of the submarine cable is improved, the weight is light, the structure is more compact, the outer diameter of the submarine cable is effectively reduced, and the production cost is saved; and the electrical performance of the cable is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially suitable for light sea cable of deep sea wind power generation. BACKGROUND

[0002] The submarine cable is the cable that is wrapped with insulating material, is laid in the seabed and is used for telecommunication transmission, and the submarine cable is divided into submarine communication cable and submarine power cable, and modern submarine cable all uses optical fiber as material, transmits telephone and internet signal, so it can be seen that the laying of the cable is very important for people's life.

[0003] With the vigorous development of domestic and foreign offshore wind power industry, offshore wind power gradually develops to the deep sea where the wind power resource is more abundant, the deep sea wind power generation tends to adopt high-power wind turbine, and the capacity demand of high-power wind turbine is larger and larger, and the traditional wind turbine interconnection array submarine cable has gradually been unable to meet the transmission capacity requirement. And the working tension during the installation and salvage of the submarine cable is related to the working water depth, water flow speed and gravity suffered by the submarine cable in water, and the deep sea wind power generation project needs to reduce the gravity suffered by the submarine cable to meet the working tension requirement in deep water. Therefore, it is urgent to develop a large-capacity light submarine cable to meet the requirements of large-capacity power transmission, light structure and low cost of the deep sea submarine cable. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the problems in the prior art and provides a light submarine cable suitable for deep sea wind power generation, which solves the problems of large-capacity power transmission, light structure and cost of the submarine cable.

[0005] The technical scheme of the utility model is:

[0006] A light submarine cable suitable for deep sea wind power generation, which comprises a water-blocking conductor layer, the cross section of the water-blocking conductor layer is circular, the water-blocking conductor layer is twisted by a plurality of single-wire conductors, the single wires are filled with a water-blocking agent, and the outer side of the water-blocking conductor layer is sequentially provided with a conductor shielding layer, an insulation layer, an insulation shielding layer, a metal sheath and an inner sheath, an armor layer and an outer sheath.

[0007] As a preferred technical scheme, the water-blocking conductor layer is twisted by a plurality of copper single-wire conductors, and the copper wires are filled with a water-blocking agent.

[0008] As a preferred technical scheme, the conductor shielding layer and the insulation shielding layer are both semiconductive shielding materials.

[0009] As a preferred technical scheme, the metal sheath is provided with a plurality of circular copper wires, the plurality of copper wires are sequentially arranged into a circle around the insulation shielding layer, and the copper wires are filled with a water-blocking glue.

[0010] As a preferred technical scheme, the inner sheath is made of linear low-density polyethylene material.

[0011] As a preferred technical scheme, the armor layer is provided with a plurality of round steel wires, the plurality of steel wires are arranged in a circle along the inner sheath in sequence, the steel wire is made of low-carbon galvanized steel wire material, and a cross-linked polyethylene layer is arranged on the outer side of the steel wire.

[0012] As a preferred technical scheme, the outer sheath layer is a single-layer polypropylene rope wrapped on the armor layer.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The utility model discloses a light submarine cable suitable for deep sea wind power generation, through setting up water -resistant conductor layer, the outer side of water -resistant conductor layer is provided with conductor shield layer, insulating layer, insulating shield layer, metal sheath and inner sheath, armor layer and outer sheath layer in proper order, improve the stability of submarine cable overall structure, light in weight, structure is more compact, effectively reduce the submarine cable outer diameter, save the production cost, improve cable electrical property. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a light submarine cable suitable for deep sea wind power generation structure schematic drawing.

[0016] In the drawing: 1, water -resistant conductor layer, 2, conductor shield layer, 3, insulating layer, 4, insulating shield layer, 5, metal sheath, 6, inner sheath, 7, armor layer, 8, outer sheath layer. DETAILED DESCRIPTION

[0017] In order to make the technical means, technical features, utility model purpose and technical effect of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0018] As Figure 1 The utility model discloses a light submarine cable suitable for deep sea wind power generation structure schematic drawing.

[0019] The light submarine cable suitable for deep sea wind power generation of this embodiment includes water -resistant conductor layer 1, conductor shield layer 2, insulating layer 3, insulating shield layer 4, metal sheath 5, inner sheath 6, armor layer 7 and outer sheath layer 8 arranged in sequence from inside to outside, the cross section of water -resistant conductor layer 1 is circular and is twisted by a plurality of copper single wire conductors, and the copper wire is filled with water -resistant agent, is used for longitudinal water -tight seal, and the copper single wire conductor is made through extrusion process.

[0020] The material of insulating layer 3 is water treeing cross -linked polyethylene, and is covered on the outer side of conductor shield layer 2.

[0021] The conductor shielding layer 2 and the insulating shielding layer 4 are both semi-conductive shielding materials, and the conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are all processed by a full-closed dry full-closed chemical cross-linking three-layer co-extrusion process.

[0022] The metal sheath 5 is composed of a round, tinned, annealed copper wire neutral line instead of a traditional alloy lead sheath and is appropriately filled with water-blocking glue to prevent water from moving longitudinally along the copper wire neutral line, and the copper wire has better ductility and flexibility, facilitating the laying and installation of the cable and reducing the construction difficulty, and performs well in application scenarios that require bending or twisting. Using the copper wire neutral line can effectively shield electromagnetic interference inside and outside the cable, improve the stability of power and signal transmission, and especially in high-frequency signal transmission, can ensure the integrity and reliability of the signal. The corrosion resistance and mechanical protection of the copper wire can relatively prolong the service life of the cable, reduce the frequency of replacement and maintenance, and reduce the overall maintenance cost.

[0023] The inner sheath 6 uses LLDPE (linear low-density polyethylene) instead of the conventional PE (polyethylene) material in the past, and the molecular chain state and linear structure can produce high-quality cable sheath in the extrusion process, adapt to the requirements of new processes, have good environmental stress cracking resistance, low-temperature resistance, impact strength and tear strength, and can well protect the cable core and have excellent radial water-blocking effect.

[0024] The armor layer 7 uses low-carbon galvanized steel wire material, and accordingly, each armor steel wire is individually covered with a layer of semi-conductive XLPE (cross-linked polyethylene) compatible with the LLDPE compound containing the upper sheath and is coated with bitumen for corrosion protection, can prevent the generation of gaps, provide mechanical protection and stability of tension, and protect the cable core from damage by radial forces in all directions.

[0025] The outer sheath layer 8 is a single-layer polypropylene rope and is wrapped around the armor layer 7 by a wrapping machine.

[0026] The above is only the preferred embodiment of the present application, and is not intended to limit the scope of the application. Any equivalent changes and modifications made within the scope of the application shall be within the technical scope of the application.

Claims

1. A lightweight submarine cable suitable for deep-sea wind power generation, characterized in that, It includes a water-blocking conductor layer (1), the cross-section of which is circular. The water-blocking conductor layer (1) is made of multiple single-wire conductors twisted together, with water-blocking agent filling between the single wires. The outer side of the water-blocking conductor layer (1) is provided with a conductor shielding layer (2), an insulation layer (3), an insulation shielding layer (4), a metal sheath (5), an inner sheath (6), an armor layer (7), and an outer sheath (8). The inner sheath (6) is made of linear low-density polyethylene material; The armor layer (7) is provided with multiple circular steel wires, which are arranged in a circle along the inner sheath (6). The steel wires are made of low-carbon galvanized steel wire material, and the outer side of the steel wires is provided with a cross-linked polyethylene layer. The armor layer (7) is compatible with the inner sheath (6).

2. The lightweight submarine cable for deep-sea wind power generation according to claim 1, characterized in that, The water-blocking conductor layer (1) is made of multiple copper single-wire conductors twisted together, with water-blocking agent filling the spaces between the copper wires.

3. The lightweight submarine cable suitable for deep-sea wind power generation according to claim 1, characterized in that, Both the conductor shielding layer (2) and the insulating shielding layer (4) are semi-conductive shielding materials.

4. The lightweight submarine cable suitable for deep-sea wind power generation according to claim 1, characterized in that, The metal sheath (5) contains multiple circular copper wires, which are arranged in a circular pattern around the insulating shielding layer (4), and the spaces between the copper wires are filled with water-blocking adhesive.

5. The lightweight submarine cable for deep-sea wind power generation according to claim 1, characterized in that, The outer sheath (8) is a single layer of polypropylene rope wrapped around the armor layer (7).

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