WO2021164230A1

WO2021164230A1 - Non-metallic armored submarine cable

Info

Publication number: WO2021164230A1
Application number: PCT/CN2020/112268
Authority: WO
Inventors: 王文超; 胡明; 赵囿林; 王丽媛; 叶成; 李雷; 聂影; 谢书鸿
Original assignee: 中天科技海缆股份有限公司
Priority date: 2020-02-17
Filing date: 2020-08-28
Publication date: 2021-08-26
Also published as: CN111292883A; CN111292883B

Abstract

A non-metallic armored submarine cable. The submarine cable comprises a central cable consisting of one or more electric units, armor layers, and an outer coating layer; the armor layers are twisted on the outside of the central cable; the outer coating layer is sleeved on the outside of the armor layers; each armor layer is formed by stranding a plurality of circular or flat non-metallic armored elements and/or a plurality of armored metal wires; when the non-metallic armored element is circular, the non-metallic armored element consists of a non-metallic rod and an outer sheath extruded and coated on the outside of the non-metallic rod, or is composed of a central rod body composed of a plurality of stacked non-metallic rods, and an outer sheath extruded and coated on the outside of the central rod body; and when the non-metallic armored element is flat, the non-metallic armored element is composed of a plurality of non-metallic rods and an outer sheath extruded and coated on the outside. According to the present invention, the problems of large submarine cable weight and large force of vertical laying and mounting under the condition of large water depth are solved, a lighter submarine cable weight is achieved while the mechanical performance of deep submarine cables is ensured, and the safety of laying construction and operation of submarine cables is facilitated to be ensured.

Description

Non-metal armored submarine cable

Technical field

The invention relates to the technical field of submarine cables, in particular to a light non-metal armored submarine cable.

Background technique

In recent years, with the rapid development of offshore wind power and ocean power transmission, the demand for submarine cables has increased. Due to the increasing saturation of wind fields in offshore areas and the increasing demand for trans-ocean and trans-water power communication transmission projects, submarine cables have gradually developed to large cross-sections, high voltages, and large water depths. The existing AC/DC submarine cable structure generally adopts metal wire armored type, such as steel wire, copper wire, etc., which has a large tensile strength and elastic modulus. However, for high-voltage submarine cable structures, the weight of the metal armor layer can generally account for 30-50% of the total weight of the submarine cable. Under the condition that the water depth exceeds 500m, the submarine cable will be affected by the submarine cable laying vessel to several hundred meters underwater. The greater the tension in the water, the obvious influence of its own weight. At the same time, the submarine cable will be clamped by the pay-off system during the pay-off process. The larger weight of the submarine cable will increase the squeezing force of the pay-off system. Conducive to the construction and installation of submarine cables. Therefore, there are very few applications of high-voltage submarine cables with water depths above 1000m at home and abroad, and the deep-sea environment poses a higher challenge to the armoring materials and structural types of submarine cables.

For large-water deep submarine cables, in order to ensure the mechanical properties of the submarine cable, the existing armor type usually adopts a multi-layer reverse metal wire twist type. If the metal armor structure continues to be used, this will cause the weight of the submarine cable to increase. At the same time, the laying and operation of the submarine cable will be affected by large ocean currents and tides, which will cause large bending under the action of large water depths. The multi-layer armored metal wire is easy to cause large elastic stress and produce "lantern" bulging. Phenomenon: If a non-metal armor type with a lower density is used, the strength of the non-metal material is difficult to be guaranteed.

Therefore, it is an urgent problem to provide suitable armor materials and structural styles for the current submarine cables used in large water depths.

Summary of the invention

In view of this, the purpose of the present invention is to provide a non-metal armored submarine cable, which can reduce the weight of the submarine cable by 25%-50% compared with the submarine cable adopting the metal armor type, and solves the problem of the weight and the weight of the submarine cable under the condition of large water depth. The difficulty of vertical laying and installation is relatively large. While ensuring the tensile and compressive mechanical properties of the deep submarine cable, it also achieves a lighter submarine cable weight, which is beneficial to ensure the safety of the installation and operation of the submarine cable. The non-metallic armor is used The installed components can withstand the tensile requirements of more than 1300MPa, and can meet the mechanical protection requirements of cables in large water depths of 3000m and below.

In order to achieve the above objective, the technical solution adopted by the present invention is:

A non-metal armored submarine cable, the submarine cable comprising a center cable composed of one or more electric units, an armor layer and an outer coating layer, the outer portion of the center cable is twisted with the armor layer, so The outer sheath of the armor layer is provided with the outer layer, the outer layer is formed by a multi-layer polypropylene winding rope material reversely and tightly wound, and the armor layer is composed of a plurality of round or flat non-metallic materials. The armor element and/or multiple armor wires are twisted to form,

When the non-metal armored element is circular, the non-metal armored element is composed of a non-metallic rod and an outer sheath extruded outside the non-metallic rod, or is composed of a plurality of stacked non-metallic rods The center rod body and the outer sheath squeezed out of the center rod body are formed,

When the non-metal armor element is flat, the non-metal armor element is composed of a central rod body composed of a plurality of horizontally arranged non-metal rods and an outer sheath extruded outside the central rod body.

Optionally, the non-metal rod has a round rod structure formed by using aramid fiber material, fiber reinforced composite material or polyethylene material impregnated with polyurethane resin and then heated and solidified, and the diameter of the round rod structure is 2-5 mm, so The outer sheath has a protective layer structure formed by polymer extrusion, and the protective layer structure has a thickness of 1 to 3 mm and a density of 0.96 to 1.15 g/cm ³ .

Optionally, the density of the non-metal armored element is 1.0 to 1.3 g/cm ³ , and when the non-metal armored element is round, the diameter of the non-metal armored element is 4 to 8 mm. When the armor element is flat, the thickness of the non-metal armor element is 3 to 5 mm, and the width is 6 to 8 mm. The sides of the non-metal armor element are all provided with arcs with a radius of 0.2 to 0.8 mm. Chamfer.

Optionally, the central cable is composed of an electrical unit, the armor layer includes a first armor layer and a second armor layer, and the first armor layer is composed of a plurality of round or flat The non-metallic armoring element and/or a plurality of the armoring metal wires are twisted to form, and the second armoring layer is formed by twisting a plurality of the non-metallic armoring elements in a circular or flat shape or is formed by twisting a plurality of non-metallic armoring elements. The non-metal armored element with a circular or flat shape and a plurality of the armored metal wires with the same shape as the non-metallic armored element are arranged at intervals and then twisted to form, the first armored layer and The stranding direction of the second armor layer is opposite.

Optionally, when the first armor layer is formed by twisting a plurality of circular non-metal armor elements, a plurality of light units are arranged in the first armor layer, and the light units are connected to the light units. The non-metal armor elements are arranged at symmetrical intervals.

Optionally, a tape layer or an inner lining layer is provided between the first armor layer and the second armor layer.

Optionally, the electrical unit is sequentially provided with a water-blocking conductor, a conductor shielding layer, a conductor insulating layer, an insulating shielding layer, a water-blocking buffer layer, a metal shielding layer, and an inner sheath from the inside to the outside. The inner lining layer is arranged between the inner sheath.

Optionally, the central cable is composed of a plurality of electrical units, the armor layer includes a first armor layer and a second armor layer, and the first armor layer is composed of a plurality of round or flat The non-metal armored element and/or a plurality of the armored metal wires are twisted to form, and the second armor layer is formed by twisting a plurality of the non-metallic armored elements in a circular or flat shape or is formed by A plurality of round or flat non-metal armor elements and a plurality of the armor metal wires with the same shape as the non-metal armor elements are arranged at intervals and then twisted to form, the first armor layer It is opposite to the twisting direction of the second armor layer.

Optionally, the electrical unit is sequentially provided with a water blocking conductor, a conductor shielding layer, a conductor insulating layer, an insulating shielding layer, a first water blocking buffer layer, a metal shielding layer, a second water blocking buffer, and an inner protective layer from the inside to the outside. A plurality of the electric units are twisted into a cable and a banding layer is bound on the outside thereof, and a filling material is arranged in the gap between the banding layer and the plurality of the electric units to form a filling layer, and the banding An inner lining layer is arranged between the layer and the first armor layer, and the wrapping layer or the inner lining layer is arranged between the first armor layer and the second armor layer.

Optionally, a plurality of optical units are further provided in the gap between the tape layer and the plurality of electrical units.

Compared with the prior art, the non-metal armored submarine cable provided by the present invention has the following advantages:

1) Adopt the conductor structure type of conductor, water-blocking filling material, and outsourcing semi-conducting resistance hose. The compression coefficient of the conductor can reach 0.94~0.97, which is beneficial to improve the water blocking effect of the submarine cable. In addition, the outer diameter of the conductor of the same specification is 0.4～1.5mm smaller than that of the compact circular conductor structure, and the overall outer diameter of the submarine cable is reduced, which can significantly reduce the material cost.

2) The surface hardness of non-metal armored components is lower than that of metal materials such as steel wire and copper wire. The armor is easy to form when stranded, and the internal stress is small. Therefore, it is easy to twist the multi-layer armor structure, the number of armor layers can be 1 to 6, and the adjacent layers are twisted in opposite directions, which is beneficial to the overall torque balance of the deep submarine cable and prevents one side of the submarine cable when the armor is twisted in the same direction Excessive bending and bulging of armor occurred.

3) The non-metallic rod in the non-metal armored element is formed by aramid fiber material impregnated with polyurethane resin and heated and cured. It has high modulus, high strength, high temperature resistance, corrosion resistance and aging resistance, and also has good radial side resistance. Compression and axial tensile strength can significantly improve the overall strength of non-metal armored components. The outer sheath outside the non-metal rod is an extruded polymer sheath. The material has high hardness, low density, and is easy to form. Different extrusion dies can be used to extrude different shapes of outer sheath structures (round, flat), and it has Good wear resistance and corrosion resistance, suitable for complex submarine cable environmental conditions.

4) The overall density of non-metal armored components is 1.0～1.3g/cm ³ , which is only 13%～17% of steel wire material and 11%～15% of copper wire. The weight advantage of the armor layer under the same specification is obvious. Avoid the vertical force on the submarine cable and the tension in the submarine water caused by the excessive weight of the metal armored submarine cable, and ensure that the submarine cable is not mechanically damaged during construction and operation. At the same time, it reduces the amount of expensive metal materials and reduces the cost of submarine cable manufacturing. The overall tensile strength of non-metal armored components is not less than 1300MPa, which is close to the tensile strength of 1250 grade medium carbon steel wire, which can fully meet the stress conditions of submarine cable construction, installation and operation under the conditions of 3000m and below large water depth.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

1 is a schematic diagram of the structure of a non-metal armored submarine cable provided by the present invention when the non-metal armored element is circular;

2 is a schematic structural diagram of a non-metal armored submarine cable provided by the present invention when the non-metal armored element is in a flat shape;

3 is a schematic diagram of the structure of a non-metal armored submarine cable provided by the present invention when it is a single-core non-metal armored cable HA;

4 is a schematic diagram of the structure when a non-metal armored submarine cable provided by the present invention is a single-core photoelectric composite non-metal armored cable HB;

5 is a schematic diagram of the structure of a non-metal armored submarine cable provided by the present invention when it is a hybrid armored cable HC;

6 is a schematic diagram of the structure when a non-metal armored submarine cable provided by the present invention is a hybrid armored cable HD;

Fig. 7 is a schematic structural diagram of a non-metal armored submarine cable provided by the present invention when it is a three-core non-metal armored cable HE.

Symbol description of main components

Non-metal rod 1

Outer sheath 2

Non-metal armored components FA1, FA2

Single core non-metal armored cable HA

Water blocking conductor HA1, HB1, HC1, HD1, HE1

Conductor shielding layer HA2, HB2, HC2, HD2, HE2

Conductor insulation layer HA3, HB3, HC3, HD3, HE3

Insulation shielding layer HA4, HB4, HC4, HD4, HE4

Water blocking buffer layer HA5, HB5, HC5, HD5

Metal shielding layer HA6, HB6, HC6, HD6, HE6

Inner sheath HA7, HB7, HC7, HD7, HE8

Inner layer HA8, HC8, HD8

The first armor layer HA9, HB9, HC9, HD9, HE12

Banding layer HA10, HB10, HC10, HD10, HE10

The second armor layer HA11, HB11, HC11, HD11, HE14

Outer cover HA12, HB12, HC12, HD12, HE15

Single-core photoelectric composite non-metal armored power HB

cable

Optoelectronic unit HB8

Hybrid armored cable HC, HD

Armored metal wire TA

Three-core non-metal armored cable HE

The first water blocking buffer layer HE5

The second water blocking buffer layer HE7

Filler layer HE9

Second inner lining layer HE11

The first inner lining layer HE13

Detailed ways

The technical solutions of the present invention will be clearly and completely described below through specific implementations. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

A non-metal armored submarine cable, the submarine cable includes a center cable composed of one or more electric units, an armor layer and an outer coating layer. The outer part of the central cable is twisted with an armor layer, and the outer sheath of the armor layer is provided with an outer cover layer, which is formed by two layers of polypropylene winding rope material reversely and tightly wound.

In order to reduce the weight of the submarine cable, the armor layer may at least be formed by twisting a plurality of round or flat non-metal armoring elements and/or a plurality of armoring metal wires. The overall tensile strength of non-metal armored components can reach more than 1300MPa, and the density range is 1.0～1.3g/cm ^3. It has a series of advantages such as high strength, high hardness, low density, and abrasion resistance. It is suitable for the armor of marine cables. Packing materials. The non-metal armored element includes a non-metal rod 1 and an outer sheath 2, and the outer sheath 2 is sleeved on the periphery of the non-metal rod 1. The material of the non-metal rod 1 is aramid fiber or other fiber-reinforced composite materials, such as carbon fiber, glass fiber, or one of the coupled modified ultra-high molecular weight polyethylene materials, which is impregnated with polyurethane resin and then cured by heating. Rod structure, the diameter of the round rod structure is 2-5 mm, the outer sheath 2 has a protective layer structure formed by polymer extrusion, the thickness of the protective layer structure is 1 to 3 mm, and the density is 0.96 to 1.15 g/cm ³ .

As shown in Figure 1, when the non-metal armored element is round, the non-metallic armored element is composed of a non-metallic rod 1 and an outer sheath 2 extruded outside the non-metallic rod 1, denoted by FA1. The diameter of the metal armor element FA1 is 4 to 8 mm. Of course, the non-metal armor element FA1 can also be composed of a central rod body composed of a plurality of stacked non-metal rods 1 and an outer sheath 2 extruded outside the central rod body, and this structure is not shown in the figure. In the central rod body, two adjacent non-metal rods 1 are arranged tangentially.

As shown in Figure 2, when the non-metallic armor element is flat, the non-metallic armor element is composed of a central rod body composed of a plurality of horizontally arranged non-metallic rods 1 and an outer sheath 2 extruded outside the central rod body. constitute. According to the different width specifications of the flat-shaped non-metal armored element, there can be 1 to 3 non-metallic rods 1 arranged in a horizontal arrangement to increase the mechanical strength of the flat non-metal armored element. In FIG. 2, two non-metal rods 1 arranged horizontally are taken as an example, which is represented by FA2. The thickness of the non-metal armored element FA2 is 3 to 5 mm, and the width is 6 to 8 mm. The sides of the non-metal armored element FA2 are provided with arc chamfers with a radian radius of 0.2 to 0.8 mm.

Example one

As shown in Figure 3, this embodiment provides a single-core non-metal armored cable HA. From the inside to the outside, there are a water blocking conductor HA1, a conductor shielding layer HA2, a conductor insulating layer HA3, an insulating shielding layer HA4, and a water blocking buffer layer. HA5, metal shielding layer HA6, inner sheath HA7, inner lining layer HA8, first armoring layer HA9, wrapping layer HA10, second armoring layer HA11 and outer coating layer HA12.

The water blocking conductor HA1 is formed by layering and twisting a plurality of aluminum wire materials, and each layer is filled with seawater-proof water blocking glue. The shape of the monofilament is trapezoidal, and the resistivity is not more than 0.028264Ω·mm ² /m at 20°C. The conductor structure type is a molded wire conductor, and the conductor cross-section is 1600mm ² . Water-blocking conductor HA1 is extruded with conductor shield HA2, conductor shield HA2 is extruded with XLPE insulation HA3, insulated with extruded insulation shield HA4, conductor shield HA2, conductor insulation layer HA3 and insulation shield HA4 adopt three-layer co-extrusion type, One-time extrusion, the conductive shielding layer HA2 and the insulating shielding layer HA4 use a semi-conductive shielding material based on ethylene-vinyl acetate copolymer (EVA) or ethylene-ethyl acrylate (EEA), and the conductor insulation layer HA3 is formed by heating and vulcanizing and cross-linking a mixture of polyethylene resin with cross-linking agent and antioxidant.

The insulating shielding layer HA4 is coated with a water-blocking buffer layer HA5, and the material is a seawater-proof semiconducting resistance hose with high water absorption rate and expansion rate. The water-blocking buffer layer HA5 is extruded with a metal shielding layer HA6, and the metal shielding layer HA6 is made of seamless alloy lead sleeve, and the material purity is not less than 99.3%. The metal shielding layer HA6 is extruded outside the inner sheath HA7. The material of the inner sheath HA7 is semi-conductive polyethylene, and the material density is 1.15 g/cm ³ . The inner sheath HA7 is wrapped around the inner lining layer HA8, and the inner lining layer HA8 is a layer of polypropylene winding rope material.

The inner lining layer HA8 is twisted with a plurality of circular non-metal armored elements FA1 to form the first armored layer HA9 and the second armored layer HA11. The diameter of the non-metallic armored element FA1 is 6.0mm, and the two-layer armored The layers are twisted in opposite directions. A layer of tape layer HA10 is wrapped between the two armor layers. The tape is made of high-strength tape material, such as PBT, polyester fiber tape, rubberized cloth tape, etc., which is mainly used to bind and fix the first non-metal armor The role of layer HA9. The second armor layer HA11 is wrapped with two layers of reverse twisted polypropylene winding rope as the outer layer HA12.

Example two

As shown in Figure 4, this embodiment provides a single-core photoelectric composite non-metal armored cable HB, which is a water blocking conductor HB1, a conductor shielding layer HB2, a conductor insulating layer HB3, an insulating shielding layer HB4, and a water blocking layer from the inside to the outside. The buffer layer HB5, the metal shielding layer HB6, the inner sheath HB7, the optical unit HB8, the first armor layer HB9, the cladding layer HB10, the second armor layer HB11 and the outer coating layer HB12 are composed.

Among them, compared with Example 1, this structure removes the inner lining layer, and at the same time, the diameter of the non-metal armor element FA1 in the first armor layer HB9 is 6.0mm, and two light beams with a diameter of 5mm are placed symmetrically in the armor layer. Unit HB8, using non-metal armored element FA1 armor layer can play a role in protecting the optical cable.

Example three

As shown in Figure 5, this embodiment provides a hybrid armored cable HC. From the inside to the outside, the water blocking conductor HC1, the conductor shielding layer HC2, the conductor insulating layer HC3, the insulating shielding layer HC4, the water blocking buffer layer HC5, and the metal The shielding layer HC6, the inner sheath HC7, the inner lining layer HC8, the first armor layer HC9, the cladding layer HC10, the second armor layer HC11 and the outer coating layer HC12 are composed. Among them, except for the first armor layer HC9, which is formed by twisting multiple armored copper wires TA, the diameter is 6.0mm, and the resistivity at 20°C is not more than 0.01777Ω·mm ² /m. The rest of the structure and the materials used and the embodiments Same in one. The first armor layer HC9 is formed by twisting multiple armored copper wires TA, and the main function is to increase the current carrying capacity and short-circuit current of the submarine cable.

Example four

As shown in Figure 6, this embodiment provides a hybrid armored cable HD. From the inside to the outside, the water blocking conductor HD1, the conductor shielding layer HD2, the conductor insulating layer HD3, the insulating shielding layer HD4, the water blocking buffer layer HD5, and the metal The shielding layer HD6, the inner sheath HD7, the inner lining layer HD8, the first armor layer HD9, the wrapping layer HD10, the second armor layer HD11 and the outer covering layer HD12 are composed. Among them, the first armor layer HD9 and the second armor layer HD11 are both composed of a plurality of circular non-metal armored elements FA1 and armored metal wires TA arranged at intervals. The specifications of the armored metal wires TA are the same as The non-metal armored component FA1 is the same, and the main purpose is to increase the current carrying capacity and short-circuit current transmission capacity of the submarine cable. The rest of the structure and materials in this embodiment are the same as in the first embodiment.

Example five

As shown in FIG. 7, this embodiment provides a three-core non-metal armored cable HE. The electric units are water blocking conductor HE1, conductor shielding layer HE2, conductor insulating layer HE3, insulating shielding layer HE4, first from the inside to the outside. The water-blocking buffer layer HE5, the metal shielding layer HE6, the second water-blocking buffer layer HE7, and the inner sheath HE8. A filling material is arranged between each electric unit to constitute a filling layer HE9. A second inner lining layer HE11, a first armoring layer HE12, a first inner lining layer HE13, a second armoring layer HE14, and an outer covering layer HE15 are sequentially arranged on the outside of the cladding layer HE10.

The water-blocking conductor HE1 is a copper-core compacted circular conductor structure with a conductor cross-section of 500mm ² . The conductor round monofilament material is TR type annealed copper wire, and the resistivity at 20°C is not more than 0.017241Ω·mm ² /m. The conductor shielding layer HE2, the conductor insulating layer HE3, and the insulating shielding layer HE4 adopt three-layer co-extrusion. The conductor insulating layer HE3 is made of water-resistant tree-type insulating material, and the metal shielding layer HE6 outside the insulating shielding layer HE4 is a copper tape wrapping structure , Using 0.1mm thick copper strip material. The metal shielding layer HE6 wraps the first water-blocking buffer layer HE5 and the first water-blocking buffer layer HE7 inside and outside respectively, and the material of the water-blocking layer is a seawater-blocking semiconducting resistance hose. The second water-blocking buffer layer HE7 is extruded outside the inner sheath HE8, and the material is semi-conductive polyethylene. After the three inner sheaths HB8 are stranded into a cable, the inside is a filling layer HE9, and the filling material is a polyethylene or rubber mixed molding filling strip structure, which plays a role in supporting and ensuring the roundness of the submarine cable. After the inner sheath HE8 is cabled, the outer layer wraps around the cladding layer HE10, the second inner liner layer HE11, the first armor layer HE12, the first inner liner layer HE13, the second armor layer HE14 and the outer cover layer HE15. Among them, the second inner lining layer HE11, the first inner lining layer HE13, and the outer covering layer HE15 are all made of polypropylene twisted ropes. The first armoring layer HE12 and the second armoring layer HE14 are composed of multiple flat The non-metallic armored element FA2 is twisted into a flat shape, and the specification of the flat non-metallic armored element is 3.0mm×7.0mm, and the two layers are twisted in opposite directions.

The present invention provides a non-metal armored submarine cable, the weight of the submarine cable can be reduced by 25% to 50% compared with the metal armored form, which solves the problem of the weight of the submarine cable and the greater force of vertical laying and installation under the condition of large water depth. While ensuring the tensile and compressive mechanical properties of the deep submarine cable, it also achieves a lighter submarine cable weight, which is conducive to ensuring the safety of the installation and operation of the submarine cable. The non-metal armored components used in it can withstand a tensile force of more than 1300 MPa, which can meet the requirements for mechanical protection of cables in large water depths. The formed armor layer structure can be applied to various submarine cable structures with a water depth of 3000m and below. The application range includes submarine optical cables, submarine cables, photoelectric composite cables, dynamic cables, umbilical cables and other underwater cables.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A non-metal armored submarine cable, characterized in that: the submarine cable comprises a central cable composed of one or more electric units, an armor layer and an outer coating, and the outer portion of the central cable is twisted with the armor The outer cover of the armor layer is sheathed with the outer cover layer, the outer cover layer is formed by a multi-layer polypropylene winding rope material reversely and tightly wound, and the armor layer is formed by a plurality of round or Flat non-metal armored elements and/or multiple armored metal wires are twisted to form,

When the non-metal armored element is circular, the non-metal armored element is composed of a non-metallic rod and an outer sheath extruded outside the non-metallic rod, or is composed of a plurality of stacked non-metallic rods The center rod body and the outer sheath squeezed out of the center rod body are formed,

When the non-metal armor element is flat, the non-metal armor element is composed of a central rod body composed of a plurality of horizontally arranged non-metal rods and an outer sheath extruded outside the central rod body.
The non-metal armored submarine cable according to claim 1, wherein the non-metal rod has a round rod formed by impregnating aramid fiber material, fiber-reinforced composite material or polyethylene material with polyurethane resin and then heating and curing. Structure, the diameter of the round rod structure is 2 to 5 mm, the outer sheath has a protective layer structure formed by polymer extrusion, the thickness of the protective layer structure is 1 to 3 mm, and the density is 0.96 to 1.15 g/ cm 3 .
The non-metal armored submarine cable according to claim 1, wherein the density of the non-metal armored element is 1.0 ~ 1.3 g/cm 3 , and when the non-metal armored element is round, the The diameter of the non-metal armored element is 4 to 8 mm. When the non-metal armored element is flat, the thickness of the non-metal armored element is 3 to 5 mm and the width is 6 to 8 mm. The sides are all provided with arc chamfers with a radian radius of 0.2 to 0.8 mm.
The non-metal armored submarine cable according to any one of claims 1 to 3, wherein the center cable is composed of an electrical unit, and the armor layer includes a first armor layer and a second armor layer. The first armoring layer is formed by twisting a plurality of round or flat non-metal armoring elements and/or a plurality of the armoring metal wires, and the second armoring layer is formed by twisting The non-metallic armor elements that are round or flat are twisted to form or are formed by multiple round or flat non-metallic armor elements and a plurality of the non-metallic armor elements that have the same shape as the non-metallic armor elements. The armored metal wires are arranged at intervals and then twisted to form, and the twisting directions of the first armoring layer and the second armoring layer are opposite.
The non-metal armored submarine cable according to claim 4, wherein when the first armor layer is formed by twisting a plurality of circular non-metal armor elements, the first armor A plurality of light units are arranged in the layer, and the light units and the non-metal armor element are arranged at a symmetrical interval.
The non-metal armored submarine cable according to claim 4, wherein a cladding layer or an inner lining layer is arranged between the first armor layer and the second armor layer.
The non-metal armored submarine cable according to claim 4, wherein the electric unit is sequentially provided with a water blocking conductor, a conductor shielding layer, a conductor insulating layer, an insulating shielding layer, and a water blocking buffer layer from the inside to the outside. , A metal shielding layer and an inner sheath, an inner lining layer is arranged between the armor layer and the inner sheath.
The non-metal armored submarine cable according to any one of claims 1 to 3, wherein the center cable is composed of a plurality of electrical units, and the armor layer includes a first armor layer and a second armor layer. An armor layer, the first armor layer is formed by twisting a plurality of round or flat non-metal armor elements and/or a plurality of the armor wires, and the second armor layer is formed by Multiple round or flat non-metal armored elements are twisted to form or are formed by multiple round or flat non-metal armored elements and multiple non-metal armored elements with the same shape as the non-metal armored elements The armored metal wires are arranged at intervals and then twisted to form, and the twisting directions of the first armored layer and the second armored layer are opposite.
The non-metallic armored submarine cable according to claim 8, wherein the electric unit is sequentially provided with a water blocking conductor, a conductor shielding layer, a conductor insulating layer, an insulating shielding layer, and a first water blocking layer from the inside to the outside. A buffer layer, a metal shielding layer, a second water-blocking buffer and an inner sheath, a plurality of the electric units are twisted into a cable and a banding layer is bound on the outside thereof, between the banding layer and the plurality of electric units A filling material is arranged in the gap to constitute a filling layer, an inner lining layer is arranged between the cladding layer and the first armor layer, and an inner lining layer is arranged between the first armor layer and the second armor layer There is the wrapping layer or the inner lining layer.
The non-metal armored submarine cable according to claim 9, wherein a plurality of optical units are further provided in the gap between the tape layer and the plurality of electrical units.