CN218729957U

CN218729957U - Low-voltage multi-core photoelectric composite submarine cable

Info

Publication number: CN218729957U
Application number: CN202222873445.3U
Authority: CN
Inventors: 邓雪娇; 戴哲东; 周吉瑞; 雷黎辉; 张少白
Original assignee: Ningbo Orient Wires & Cables Co ltd
Current assignee: Ningbo Orient Wires & Cables Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-24
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a compound submarine cable of low pressure multicore photoelectricity, including a plurality of cable cores and lead cover, each the cable core includes the conductor and sets up in the insulating layer of conductor periphery, and is a plurality of the cable core sets up in same lead cover to form the metal shielding layer to a plurality of cable cores through the lead cover, be equipped with the filling unit between cable core and the lead cover. The utility model discloses a submarine cable, every cable core only include the conductor and set up in the insulating layer of conductor periphery to set up a plurality of cable cores in same plumbous cover, form the metallic shield layer simultaneously to a plurality of cable cores through same plumbous cover, the plumbous cover is easy shaping, and it is convenient to make, and thickness is even moreover, and set up the packing element between plumbous cover and cable core, can the cable more round, can play the cushioning effect moreover.

Description

Low-voltage multi-core photoelectric composite submarine cable

Technical Field

The utility model relates to the technical field of cables, in particular to compound submarine cable of low pressure multicore photoelectricity.

Background

With the development of marine oil and gas resources and new marine energy gradually moving to deep and far sea, the submarine cable which bears the transmission task of electric energy and communication signals gradually becomes a key and high-cost component of the whole set of system.

The multi-core submarine cable in the prior art usually adopts a split-phase lead sleeve as a metal shield, namely, a layer of lead sleeve is extruded on the periphery of each cable core to carry out metal shield, so that electric fields among phases are not related to each other, but for low-voltage cables (cables of 3kv and below), the outer diameter of the cable core is smaller, the production difficulty of extruding and coating the lead sleeve alone is higher, the core is easy to deviate or the thickness is uneven, and the production working hour is longer.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the low-voltage multi-core photoelectric composite submarine cable is provided, a plurality of cable cores are arranged in the same lead sleeve, the manufacture is convenient, and the thickness is uniform.

In order to achieve the above object, the present invention provides the following technical solutions.

The low-voltage multi-core photoelectric composite submarine cable comprises a plurality of cable cores and lead sleeves, wherein each cable core comprises a conductor and an insulating layer arranged on the periphery of the conductor, the plurality of cable cores are arranged in the same lead sleeve, the lead sleeves form metal shielding layers for the plurality of cable cores, and a filling unit is arranged between each cable core and the corresponding lead sleeve.

The utility model has the advantages that: the utility model discloses a submarine cable, every cable core only include the conductor and set up in the insulating layer of conductor periphery to set up a plurality of cable cores in same plumbous cover, form the metallic shield layer simultaneously to a plurality of cable cores through same plumbous cover, the plumbous cover is easy shaping, and it is convenient to make, and thickness is even moreover, and set up the packing element between plumbous cover and cable core, can the cable more round, can play the cushioning effect moreover.

As an improvement of the utility model, the gap department is filled with the glue that blocks water between packing unit and the cable core. Through the improvement, the filling unit is more compact and round.

As an improvement of the present invention, the outer periphery of the lead sheath is coated with asphalt to form a first anticorrosive coating. Through the improvement, the anticorrosion effect can be achieved.

As an improvement of the utility model, the inner sheath of first anticorrosive coating periphery, set up in the inner liner of inner sheath periphery and set up in the armor of inner liner periphery.

As an improvement of the utility model, the periphery of the inner sheath is wrapped with the copper strips to form the mothproof layer. Through the improvement, the mothproof effect can be achieved.

As an improvement of the utility model, the inner liner has two-layerly, and the lining passes through aramid fiber rope around the package formation in every layer, and aramid fiber rope in the two-layer inner liner winds package opposite direction moreover. Through the improvement, the strength of the cable is improved while the buffering effect is achieved, the compression resistance and the shearing resistance of the cable are improved, and the torsion resistance of the cable is improved by adopting the opposite winding direction.

As an improvement of the present invention, the outer periphery of the armor is coated with asphalt to form a second anticorrosive coating.

As an improvement of the utility model, the periphery of armor is equipped with the oversheath.

As an improvement of the utility model, still be equipped with the optical cable in the plumbous cover, gap department packs has the glue that blocks water between optical cable and the cable core.

Drawings

Fig. 1 is a schematic diagram of the cross-sectional structure of the cable of the present invention.

In the figure, 1, a conductor; 2. an insulating layer; 3. an optical cable; 4. a filling unit; 5. water-blocking glue; 6. a lead sleeve; 7. an inner sheath; 8. an inner liner layer; 9. an armor layer; 10. an outer sheath.

Detailed Description

The invention is further explained by combining the attached drawings.

Referring to fig. 1, the low-voltage multi-core photoelectric composite submarine cable includes a plurality of cable cores, a lead sheath 6, an inner sheath 7 disposed at the periphery of the lead sheath 6, an inner liner 8 disposed at the periphery of the inner sheath 7, an armor layer 9 disposed at the periphery of the inner liner 8, and an outer sheath 10 disposed at the periphery of the armor layer 9. The low voltage in this application means a voltage of 3kv or less.

Each cable core comprises a conductor 1 and an insulating layer 2 arranged on the periphery of the conductor 1, in the embodiment, the conductor 1 adopts a circular compact wire core structure formed by twisting annealed oxygen-free copper single wires with the purity of not less than 99.95%, and the compact coefficient is not less than 0.9. The conductor 1 is provided with a longitudinal waterproof sealing structure, and the longitudinal waterproof sealing structure adopts a mode of pouring water blocking glue 5 between each layer of the conductor 1. Conductor 1 with a cross section of 50mm ² The insulating layer 2 is made of ultraviolet light cross-linked polyethylene insulating material, and the cross-linking process is ultraviolet light irradiation cross-linking. In the preferred embodiment, the insulating layer 2 is extruded to a nominal thickness of 1.0mm.

The number of the cable cores is three, the three cable cores are arranged in the same lead sleeve 6 and are circumferentially arranged in the lead sleeve 6, a metal shielding layer is formed on the plurality of cable cores through the lead sleeve 6, and a filling unit 4 is arranged between the cable cores and the lead sleeve 6. The section of the filling unit 4 is circular, and a gap between the filling unit 4 and the cable core is filled with water-blocking glue 5. Making the filling unit 4 more compact and round. An optical cable 3 is further arranged in the lead sleeve 6, and a gap between the optical cable 3 and the cable core is also filled with water-blocking glue 5. The cable core, the optical cable 3 and the filling units 4 are combined together by adopting a planetary machine, the number and the diameter of the filling units 4 are determined according to the number of the cable cores and the number of the optical cable 3, the cable is required to be ensured to be round, and the water blocking glue 5 is filled in gaps, so that the filling is more compact, the round appearance is ensured, the optical cable 3 is protected from being damaged, and the water blocking performance and the electricity resistance performance of the cable are further improved. And tightly binding the formed cables together by adopting non-woven fabrics. After cabling, a lead sleeve 6 is formed by adopting continuous extrusion coating and is used as a metal shielding layer, and the material purity of the lead sleeve is not less than 99.3 percent. In the preferred embodiment, the lead sheath 6 is nominally 2.0mm thick.

The outer circumference of the lead sheath 6 is coated with bitumen to form a first corrosion protection layer to provide corrosion protection and adhesion to the subsequent inner sheath 7.

In addition, the periphery of the inner sheath 7 is wrapped with copper strips, so that a mothproof layer is formed. Can play the mothproof effect to copper strips electrical connection is continuous, and ground connection after the access grounding box at both ends plays the effect of ground connection simultaneously.

Inner liner 8 has two-layerly, and each in situ inner liner 8 is formed around the package through aramid fiber rope, and aramid fiber rope in two-layer inner liner 8 winds package opposite direction moreover. The buffer effect is achieved, meanwhile, the strength of the cable is improved, the compression resistance and the shearing resistance of the cable are improved, and the opposite winding direction is adopted, so that the torsion resistance of the cable is improved. In the preferred embodiment, the aramid fiber rope material is twisted aramid fiber rope, each layer having a diameter of about 1mm.

A layer of specially treated anti-corrosion steel wire is coated on the lining layer 8 to be used as a metal armor layer 9 to further improve the strength of the cable. A second layer of insulation is formed over the armour layer 9 using bitumen to provide further protection against corrosion and adhesion to the outer sheath 10. The metal wire armor is compact, the gap between adjacent metal wires does not exceed the diameter of one metal wire, and the armor is wrapped with a layer of synthetic belt. In the preferred embodiment, the steel wire is a hot-dip galvanized steel wire with a diameter of 3.15mm and the asphalt coating is approximately 0.3mm thick, and nylon tape is used as the armored tape layer.

The material of oversheath 10 is polyurethane to the oversheath 10 of polyurethane material replaces fibre tegument as the protective layer, when playing the abrasionproof and decreases the effect, is favorable to reducing the erosion of sea water to armor steel wire and inner liner 8, reduces the anticorrosive demand to the steel wire.

The utility model discloses a submarine cable, every cable core only includes conductor 1 and sets up in the insulating layer 2 of 1 periphery of conductor, and set up a plurality of cable cores in same lead cover 6, form the metallic shield layer simultaneously to a plurality of cable cores through same lead cover 6, lead cover 6 shaping easily, it is convenient to make, and thickness is even, and set up filling unit 4 between lead cover 6 and cable core, can the cable more round, and can play the cushioning effect, extrude the packing that blocks water glue 5 as the side gap in filling unit 4's clearance department, make filling unit 4 more closely knit round, the resistant electrical property and the block water performance of cable have also been strengthened to a certain extent.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a compound submarine cable of low pressure multicore photoelectricity which characterized in that: the cable comprises a plurality of cable cores and lead sleeves, wherein each cable core comprises a conductor and an insulating layer arranged on the periphery of the conductor, the cable cores are arranged in the same lead sleeve, a metal shielding layer is formed on the cable cores through the lead sleeves, and a filling unit is arranged between each cable core and the corresponding lead sleeve.

2. The low-voltage multi-core photoelectric composite submarine cable according to claim 1, wherein: and a gap between the filling unit and the cable core is filled with water-blocking glue.

3. The low-voltage multi-core photoelectric composite submarine cable according to claim 1, wherein: the outer periphery of the lead sheath is coated with asphalt to form a first corrosion resistant layer.

4. The low-voltage multi-core photoelectric composite submarine cable according to claim 3, wherein: the inner sheath of first anticorrosive coating periphery, set up in the inner liner of inner sheath periphery and set up in the armor of inner liner periphery.

5. The low-voltage multi-core photoelectric composite submarine cable according to claim 4, wherein: and the copper strip is also wound on the periphery of the inner sheath, so that a mothproof layer is formed.

6. The low-voltage multi-core photoelectric composite submarine cable according to claim 4, wherein: the inner liner has two-layerly, and the lining passes through aramid fiber rope around the package formation in every layer, and aramid fiber rope in the two-layer inner liner winds package opposite direction moreover.

7. The low-voltage multi-core photoelectric composite submarine cable according to claim 4, wherein: the armor is coated on its outer circumference with asphalt to form a second corrosion protection layer.

8. The low-voltage multi-core photoelectric composite submarine cable according to claim 4, wherein: the periphery of armor is equipped with the oversheath.

9. The low-voltage multi-core photoelectric composite submarine cable according to claim 1, wherein: and an optical cable is further arranged in the lead sleeve, and a gap between the optical cable and the cable core is filled with water-blocking glue.