CN218768791U - Light environment-friendly submarine cable - Google Patents

Abstract

The utility model discloses a light-duty environmental protection submarine cable belongs to the submarine cable field. The cable comprises a conductor core, a conductor shield, an insulating layer, an insulating shield layer, a semi-conductive water-blocking tape, a copper wire sparse winding shield layer, an aluminum-plastic composite tape, a sheath, a filling layer, a cabling wrapping tape, an inner liner, a metal armor layer and a tegument layer from inside to outside in sequence. The utility model discloses a copper wire shielding plastic-aluminum composite belt indulges the submarine cable of package as radial water blocking layer structure, and the plastic-aluminum composite sheath has metal sheath's imperviousness concurrently, and the water proofness of cable is good, also has the corrosion resistance of polymer. The cable is light in weight and good in bending property. The problems that the conventional submarine cable is heavy due to the fact that a lead sleeve is large in specific gravity, and transportation and laying are inconvenient are solved, and meanwhile, the hidden danger that the environment is polluted due to poor processing is avoided.

Description

Light environment-friendly submarine cable

Technical Field

The utility model belongs to submarine cable field, especially a light-duty environmental protection submarine cable.

Background

Submarine cables are cables wrapped with insulating materials and laid on the sea bottom for telecommunication transmission. Submarine cables are divided into submarine communication cables and submarine power cables.

With the development of marine industry, the construction of marine engineering is more and more, the usage amount of submarine cables is necessarily larger and larger, but at present, the submarine cables basically use metal lead sleeves as radial waterproof layers of the cables, and the lead sleeves are characterized by being basically waterproof and good in cable sealing performance. The lead has stable chemical property and good seawater corrosion resistance. The lead is soft, and the cable has good bending property. But the defects are that the lead has large specific gravity, the cable is heavy, and the transportation and the laying are inconvenient. Lead may contaminate the surrounding environment if not properly processed and used. It is not suitable for the environment of offshore shoal and the like to use the lead sleeve as the radial waterproof layer.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model provides a light-duty environmental protection submarine cable to solve the problem that the background art relates to.

The utility model provides a light-duty environmental protection submarine cable, include:

a plurality of conductive line groups twisted with each other to form a wire core; the conductive wire group comprises a conductor core, a conductor shielding layer, an insulating shielding layer, a semiconductive water-blocking tape, a copper wire sparsely-wound shielding layer, an aluminum-plastic composite tape and a sheath, wherein the conductor shielding layer, the insulating layer and the insulating shielding layer are sequentially coated outside the conductor core from inside to outside;

the filling layer comprises filling strips arranged among the gaps of the conductive wire group and cabling wrapping belts wrapping the surfaces of the filling strips;

the protective layer comprises an inner liner layer and an outer coating layer which are used for coating the cabling belting, and an asphalt coating layer and a metal armor layer which are arranged between the inner liner layer and the outer coating layer in sequence.

Preferably or optionally, the conductor core is composed of a plurality of mutually compacted round water-blocking copper conductors formed by longitudinally wrapping water-blocking tapes in the copper conductors.

Preferably or optionally, the conductor shielding layer, the insulating layer and the insulation shielding layer are in a one-step extrusion molding structure.

Preferably or alternatively, the insulation layer is made of peroxide cross-linked polyethylene insulation.

Preferably or optionally, the conductor shielding layer and the insulation shielding layer are made of peroxide crosslinking type semi-conductive shielding materials.

Preferably or optionally, the inner liner layer and the outer coating layer are both made of polypropylene (PP) ropes for sea cables.

Preferably or optionally, the sheath is a semi-conductive PE sheath.

Preferably or optionally, the metal armor layer is a low carbon galvanized steel wire armor.

Preferably or optionally, an optical fiber unit is disposed within the filler layer.

The utility model relates to a light-duty environmental protection submarine cable compares in prior art, has following beneficial effect: the utility model discloses a copper wire shielding plastic-aluminum composite belt indulges the submarine cable of package as radial water blocking layer structure, and plastic-aluminum composite sheath has metal sheath's imperviousness concurrently, and the water proofness of cable is good, also has the corrosion resistance of polymer. The cable is light in weight and good in bending property. The problems of heavy cable and inconvenient transportation and laying of the conventional submarine cable caused by the large specific gravity of the lead sleeve are solved, and the hidden trouble of environmental pollution caused by poor processing is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

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

The reference signs are: 1. a conductor core; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a semiconductive water-blocking tape; 6. the copper wire is sparsely wound on the shielding layer; 7. an aluminum-plastic composite tape; 8. a sheath; 9. a filling layer; 10. cabling belt; 11. An inner liner layer; 12. a metal armor layer; 13. a tegument layer; 14. an optical fiber unit.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

Referring to fig. 1 to 2, a lightweight and environmentally friendly submarine cable comprises: the cable comprises a conductor core 1, a conductor shield 2, an insulating layer 3, an insulating shield layer 4, a semiconductive water-blocking tape 5, a copper wire sparse-wound shield layer 6, an aluminum-plastic composite tape 7, a sheath 8, a filling layer 9, a cabling tape 10, an inner liner 11, a metal armor layer 12, an outer tegument layer 13 and an optical fiber unit 14.

Referring to fig. 1, a plurality of groups of conductive lines are twisted with each other to form a wire core, 3 groups in this example. The conductive wire group comprises a conductor core 1, a conductor shielding layer 2, an insulating layer 3 and an insulating shielding layer 4 which are sequentially coated outside the conductor core 1 from inside to outside, a semiconductive water-blocking tape 5 wrapped outside the insulating shielding layer 4, a copper wire sparsely-wound shielding layer 6 arranged outside the semiconductive water-blocking tape, an aluminum-plastic composite tape 7 longitudinally wrapped outside the copper wire sparsely-wound shielding layer 6 and a sheath 8 extruded outside the aluminum-plastic composite tape 7; the semi-conductive water-blocking tape 5 is made of wrapped water-blocking materials, and the materials absorb water and expand to prevent seawater from further diffusing and play a role in longitudinal water blocking; the external copper wire shielding and the copper strip are reversely pricked to form a copper wire sparse winding shielding layer 6, the conductivity of copper is good, the short-circuit current can be well transmitted, the outer layer longitudinally-wrapped aluminum-plastic composite belt 7 and the semi-conductive PE sheath 8 have the characteristics of water impermeability, corrosion resistance and light weight, and the radial water blocking effect is realized.

In a further embodiment, the conductor core 1 is composed of a plurality of mutually compacted round water-blocking copper conductors formed by longitudinally wrapping water-blocking tapes in the copper conductors. The cylindrical conductor is of a compact circular structure, so that water blocking of the cable is facilitated, the water blocking tape is longitudinally wrapped in the conductor and contains a water absorbing material, the water blocking tape has water absorbing and expanding performance, seawater is prevented from further diffusing, and longitudinal water blocking of the cable can be effectively guaranteed.

In a further embodiment, the conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are formed by one-step extrusion molding. In the actual production process, three-layer co-extrusion catenary production is adopted, and the conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4 are extruded at one time, so that the insulating property is ensured; the insulating layer 3 is made of crosslinked polyethylene (YJ-35) resistant to 35kV voltage and has good insulating performance. The conductor shielding layer 2 and the insulation shielding layer 4 are made of peroxide cross-linking type semi-conductive shielding material (PYJD-35) meeting the 35kV power transmission requirement. The device can play a good role in homogenizing the electric field and prevent the cable from breaking down.

In a further embodiment, the sheath 8 is a semiconductive PE sheath 8, in particular an aluminium-plastic composite sheath 8. The cable has the water impermeability of the metal sheath 8, the water tightness of the cable is good, and the corrosion resistance of the polymer is also good.

The filling layer 9 comprises filling strips arranged among the gaps of the conductive wire group and cabling tape 10 coated on the surface of the filling strips.

The protective layer comprises an inner liner layer 11 and a tegument layer 13 which are used for wrapping the cabling wrapping belt 10, and an asphalt coating layer and a metal armor layer 12 which are sequentially arranged between the inner liner layer 11 and the tegument layer 13. Wherein, the metal armor layer 12 is low-carbon galvanized steel wire armor. The armor adopts low-carbon galvanized steel wires, has high strength, and can play a role in corrosion prevention to a certain extent when galvanized and asphalt is coated; inner liner 11 and tegument 13 all adopt polypropylene PP rope, play certain cushioning effect, can effectively prevent that the cable from colliding with and damaging that probably meets in transportation, laying and operation process.

In a further embodiment, referring to fig. 2, an optical fiber unit 14 is disposed within the filler layer 9. The optical fiber unit 14 is added during cabling, so that communication signals can be transmitted, remote control and signal transmission can be performed, and monitoring, overhauling and maintenance can be performed on the cable.

The utility model discloses a 7 indulge packages of copper wire shielding plastic-aluminum composite belt are as the submarine cable of radial water blocking layer structure, and plastic-aluminum composite sheath 8 has metal sheath 8's imperviousness concurrently, and the water proofness of cable is good, also has the corrosion resistance of polymer. The cable is light in weight and good in bending property. The problems that the conventional submarine cable is heavy due to the fact that a lead sleeve is large in specific gravity, and transportation and laying are inconvenient are solved, and meanwhile, the hidden danger that the environment is polluted due to poor processing is avoided.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims (8)

1. A lightweight environmentally friendly submarine cable, comprising:

a plurality of conductive line groups twisted with each other to form a wire core; the conductive wire group comprises a conductor core (1), a conductor shielding layer (2), an insulating layer (3) and an insulating shielding layer (4) which are sequentially coated outside the conductor core (1) from inside to outside, a semiconductive water blocking tape (5) wrapped outside the insulating shielding layer (4), a copper wire sparse winding shielding layer (6) arranged outside the semiconductive water blocking tape, an aluminum-plastic composite tape (7) longitudinally wrapped outside the copper wire sparse winding shielding layer (6) and a sheath (8) extruded on the outer layer of the aluminum-plastic composite tape (7);

the filling layer (9) comprises filling strips arranged among the gaps of the conductive wire group and cabling wrapping bands (10) wrapping the surfaces of the filling strips;

the protective layer comprises an inner liner layer (11) and a outer coating layer (13) which are used for coating the cabling wrapping tape (10), and an asphalt coating layer and a metal armor layer (12) which are arranged between the inner liner layer (11) and the outer coating layer (13) in sequence.

2. A lightweight environmentally friendly submarine cable according to claim 1, wherein the conductor core (1) consists of a plurality of mutually compacted circular water-blocking copper conductors formed by longitudinal wrapping of water-blocking tape within the copper conductors.

3. A lightweight and environmentally friendly submarine cable according to claim 1, wherein the conductor shield (2), insulating layer (3) and insulating shield (4) are of one-step extrusion structure.

4. A lightweight environmentally friendly submarine cable according to claim 1, wherein the insulating layer (3) is made of peroxide crosslinked polyethylene insulation;

the conductor shielding layer (2) and the insulation shielding layer (4) are made of peroxide cross-linking type semi-conductive shielding materials.

5. The lightweight environmentally friendly submarine cable according to claim 1, wherein the inner liner (11) and the outer layer (13) are made of polypropylene (PP) rope for submarine cables.

6. A lightweight environmentally friendly submarine cable according to claim 1, wherein the sheath (8) is a semi-conductive PE sheath (8).

7. A lightweight environmentally friendly submarine cable according to claim 1, wherein the metallic armor layer (12) is low carbon galvanized steel wire armor.

8. A lightweight environmentally friendly submarine cable according to any of claims 1 to 7, wherein optical fiber units (14) are provided within the filler layer (9).

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