CN218631448U

CN218631448U - Seabed composite power cable

Info

Publication number: CN218631448U
Application number: CN202222650784.5U
Authority: CN
Inventors: 陈江峰; 邵振宇; 栗之炜; 季志峻; 赵岳
Original assignee: China Submarine Cable Construction Co
Current assignee: China Submarine Cable Construction Co
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-03-14
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a submarine composite power cable, which comprises a first battery cell (1), a second battery cell (2), a third battery cell (3), a protective cover (6) and a filling strip (4); the first battery cell (1), the second battery cell (2) and the third battery cell (3) are arranged side by side; the filling strip (4) is arranged among the first battery cell (1), the second battery cell (2) and the third battery cell (3), and the protective sleeve (6) is wrapped on the outer sides of the first battery cell (1), the second battery cell (2), the third battery cell (3) and the filling strip (4); the protective sleeve (6) comprises a first armor layer (501) and a second armor layer (502); the first armor layer (501) and the second armor layer (502) are coaxially arranged from inside to outside, and the second armor layer (502) wraps the outer side of the first armor layer (501). The utility model discloses a submarine composite power cable has double-deck armor structure, and crushing resistance, wearability and corrosion resistance are stronger.

Description

Seabed composite power cable

Technical Field

The utility model relates to a submarine cable field especially relates to a submarine composite power cable.

Background

A submarine power cable is a cable wrapped by insulating materials, is laid on the seabed and is used for power transmission. Because of the requirements of the special environment of the sea floor, the sea floor power cable needs to have stronger wear resistance, pressure resistance and corrosion resistance compared with the common power cable. In the submarine power cable in the prior art, a layer of steel wire armor is wrapped outside the cable so as to enhance the wear resistance and the pressure resistance of the submarine power cable. However, with the change of marine environment and the increase of laying depth, the single-layer steel wire armored submarine cable in the prior art cannot meet the engineering requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compound power cable in seabed.

The utility model provides a seabed composite power cable, which comprises a first electric core 1, a second electric core 2, a third electric core 3, a protective cover 6 and a filling strip 4; the first battery cell 1, the second battery cell 2 and the third battery cell 3 are arranged side by side; the filler strip 4 is arranged between the first cell 1, the second cell 2 and the third cell 3, and the protective sleeve 6 is wrapped on the outer sides of the first cell 1, the second cell 2, the third cell 3 and the filler strip 4; the protective sleeve 6 comprises a first armor layer 501 and a second armor layer 502; the first armor layer 501 and the second armor layer 502 are coaxially arranged from inside to outside, and the second armor layer 502 wraps the outer side of the first armor layer 501.

An anti-wear layer is further arranged between the first armor layer 501 and the second armor layer 502. The first armor layer 501 and the second armor layer 502 are steel wire mesh armor layers. The second armor layer 502 is also provided with a corrugated steel sleeve 503. The outer side of the corrugated steel sleeve 503 is also provided with an outer quilt cover, and the thickness of the outer quilt cover is 6 mm to 10 mm. The first battery core 1 includes a water blocking conductor 101, a conductor shielding layer 102, a crosslinked polyethylene insulating layer 103, an insulating shielding layer 104, a semi-conductive water blocking layer 105, and a cable protection layer 106. The cable protection layer 106 includes an alloy lead sheath 1061 and a reinforcing sheath 1062; the alloy lead sleeve 1061 is sleeved on the outer side of the semi-conductive water-resistant layer 105; the reinforcing protective sleeve 1062 is sleeved outside the alloy lead sleeve 1061. The cross section of the filler strip 4 is fan-shaped, and two filler strips 4 are respectively arranged between each two first battery cells 1, each second battery cell 2, and each third battery cell 3. The protective sleeve 6 further comprises a binding layer 601 and an inner lining layer 602; the binding layer 601 is arranged on the innermost layer of the protective sleeve 6 and is bound outside the first electric core 1, the second electric core 2, the third electric core 3 and the filling strip 4; the inner liner 602 is disposed between the tie layer 601 and the first armor layer 501.

The submarine composite power cable provided by the utility model has a double-layer armor structure, and is stronger in pressure resistance, wear resistance and corrosion resistance; the corrugated steel sleeve is arranged, so that the submarine cable is more convenient to bend and avoid bending damage when being washed by seawater, and the influence of vortex street vibration generated by seawater on the submarine cable can be avoided; meanwhile, the capability of the submarine composite power cable for bearing short-circuit current and the capability of the shielding layer are improved.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the submarine composite power cable according to the present invention.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a submarine composite power cable, which includes a first electrical core 1, a second electrical core 2, a third electrical core 3, a protective sheath 66, and a filler strip 4; the first battery cell 1, the second battery cell 2 and the third battery cell 3 are arranged side by side; the filler strip 4 is arranged between the first cell 1, the second cell 2 and the third cell 3, and the protective sleeve 6 is wrapped on the outer sides of the first cell 1, the second cell 2, the third cell 3 and the filler strip 4; the protective sleeve 6 comprises a first armor layer 501 and a second armor layer 502; the first armor layer 501 and the second armor layer 502 are coaxially arranged from inside to outside, and the second armor layer 502 wraps the outer side of the first armor layer 501. As can be understood by those skilled in the art, the arrangement of the two armor layers can effectively improve the pressure resistance and the wear resistance of the submarine composite power cable and effectively prevent the damage to a fishing vessel trawl, a ship anchor and sharks.

Further, an anti-wear layer is further arranged between the first armor layer 501 and the second armor layer 502.

Further, the first armor layer 501 and the second armor layer 502 are steel wire mesh armor layers.

Further, a corrugated steel sleeve 503 is further disposed outside the second armor layer 502. The skilled person can understand that the arrangement of the corrugated steel sleeve 503 can further improve the compression resistance and bending performance of the submarine composite power cable, so that the submarine cable can be bent more conveniently when being washed by seawater to avoid bending damage, and the influence of vortex street vibration generated by seawater on the submarine cable can also be avoided; meanwhile, the capability of bearing short-circuit current of the submarine composite power cable and the capability of improving the shielding layer are improved.

Further, an outer quilt cover is further arranged on the outer side of the corrugated steel sleeve 503, and the thickness of the outer quilt cover is 6 mm to 10 mm. As can be understood by those skilled in the art, the outer cover is formed by winding and wrapping an elastic strip material and is made of a high-density polyethylene material, so that the outer cover has better corrosion resistance and heat preservation performance.

Further, the first battery core 1 includes a water blocking conductor 101, a conductor shielding layer 102, a crosslinked polyethylene insulating layer 103, an insulating shielding layer 104, a semi-conductive water blocking layer 105, and a cable protection layer 106. As will be understood by those skilled in the art, the water-blocking conductor 101 is formed by tightly pressing and twisting a water-blocking copper conductor wire; the conductor shielding layer 102 may form an equipotential with the shielded water blocking conductor 101 and form a good contact with the crosslinked polyethylene insulating layer 103 outside the conductor shielding layer, so as to avoid partial discharge between the water blocking conductor 101 and the crosslinked polyethylene insulating layer 103; the insulation shielding layer 104 can prevent a gap from being formed between the crosslinked polyethylene insulation layer 103 and the semi-conductive waterproof layer 105, so that partial discharge can be generated between the crosslinked polyethylene insulation layer 103 and the semi-conductive waterproof layer 105, and the reduction of the power transmission efficiency can be avoided; the semi-conductive water-resistant layer 105 is arranged, so that an air gap can be further eliminated, the fire discharge resistance of the first battery cell 1 is improved, and the surface electric field of the first battery cell 1 is better and uniform.

Further, the cable protection layer 106 includes an alloy lead sheath 1061 and a reinforcing sheath 1062; the alloy lead sleeve 1061 is sleeved on the outer side of the semi-conductive water-resistant layer 105; the reinforcing protective sleeve 1062 is sleeved outside the alloy lead sleeve 1061. As can be understood by those skilled in the art, the alloy lead sheath 1061 is made of a lead alloy material with high rigidity, which is commonly used in the prior art, and can effectively protect the first battery cell 1 from mechanical damage caused by an external force. The reinforcing protective sleeve 1062 is made of a polyurethane material and has the characteristics of high wear resistance, high tear strength, good weather resistance, high elasticity, good thermal aging performance, excellent water resistance, excellent weather resistance, microbial attack resistance and the like.

Further, the cross section of the filler strip 4 is fan-shaped, and two filler strips 4 are respectively arranged between the first battery cell 1, the second battery cell 2, and the third battery cell 3. As can be understood by those skilled in the art, the arrangement of the filler strips 4 can ensure that the seabed composite power cable keeps round and round, and the tensile strength and the swing resistance of the seabed composite power cable are improved.

Further, the protective sleeve 6 further comprises a binding layer 601 and an inner lining layer 602; the binding layer 601 is arranged on the innermost layer of the protective sleeve 6 and is bound outside the first electric core 1, the second electric core 2, the third electric core 3 and the filling strip 4; the inner liner 602 is disposed between the tie layer 601 and the first armor layer 501. As will be understood by those skilled in the art, the strapping layer 601 is formed by wrapping a strapping tape around the first cell 1, the second cell 2, the third cell 3, and the filler strip 4. As will be appreciated by those skilled in the art, the inner liner 602 is used to prevent the first armor 501 from abrading the tie layer 601.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A submarine composite power cable is characterized by comprising a first battery cell (1), a second battery cell (2), a third battery cell (3), a protective sleeve (6) and a filling strip (4); the first battery cell (1), the second battery cell (2) and the third battery cell (3) are arranged side by side; the filling strip (4) is arranged among the first battery cell (1), the second battery cell (2) and the third battery cell (3), and the protective sleeve (6) wraps the first battery cell (1), the second battery cell (2), the third battery cell (3) and the filling strip (4); the protective sleeve (6) comprises a first armor layer (501) and a second armor layer (502); the first armor layer (501) and the second armor layer (502) are coaxially arranged from inside to outside, and the second armor layer (502) wraps the outer side of the first armor layer (501).

2. A submarine composite power cable according to claim 1, wherein there is further provided a wear protection layer between the first (501) and second (502) armouring layers.

3. A subsea composite power cable according to claim 2, characterized in that the first (501) and second (502) armouring layers are steel mesh armouring layers.

4. A submarine composite power cable according to claim 3, wherein the second armouring layer (502) is provided with a corrugated steel jacket (503) in addition.

5. A submarine composite power cable according to claim 4, where the corrugated steel jacket (503) is further provided on its outside with an outer jacket having a thickness of 6 mm to 10 mm.

6. A subsea composite power cable according to claim 4, characterized in that the first cell (1) comprises a water-blocking conductor (101), a conductor shield (102), a crosslinked polyethylene insulation layer (103), an insulation shield (104), a semi-conductive water-blocking layer (105) and a cable protection layer (106).

7. A submarine composite power cable according to claim 6, where the cable protection layer (106) comprises an alloyed lead sheath (1061) and a reinforcing sheath (1062); the alloy lead sleeve (1061) is sleeved on the outer side of the semi-conductive water-resistant layer (105); the reinforcing protective sleeve (1062) is sleeved on the outer side of the alloy lead sleeve (1061).

8. The submarine composite power cable according to claim 7, wherein the cross-section of the filler strip (4) is fan-shaped, and a filler strip (4) is disposed between each of the first electrical core (1), the second electrical core (2), and the third electrical core (3).

9. Subsea composite power cable according to claim 8, characterized in that the protective jacket (6) further comprises a strapping (601) and an inner liner (602); the strapping layer (601) is arranged on the innermost layer of the protective sleeve (6) and is wrapped and strapped outside the first battery cell (1), the second battery cell (2), the third battery cell (3) and the filling strip (4); the inner liner (602) is disposed between the strapping (601) and the first armor layer (501).