Anti-corrosion armored cable for seabed environment

Abstract

The utility model relates to the technical field of submarine cables, in particular to an anti-corrosion armored cable for a submarine environment, which comprises a filling layer, a plurality of insulating layers arranged in the filling layer, shielding layers arranged in the insulating layers, and conductors arranged in the shielding layers. A composite anticorrosive coating is arranged outside the composite armor layer, and the composite anticorrosive coating comprises a first coating, a second coating and a third coating which are sequentially arranged from inside to outside; under the action of the first coating, the second coating and the third coating, a multi-layer anti-corrosion structure can be formed in cooperation with the sheath layer made of an anti-corrosion material, protection performance and mechanical flexibility are both considered, the anti-corrosion performance of the submarine cable is improved, and the service life of the submarine cable is prolonged; and through the arrangement of the composite armor layer, under the action of the spirally wound steel strip and the tinned copper strip, the structural strength of the armor layer and the protection effect on the cable body are ensured, the electromagnetic shielding effect can also be achieved, and the performance of the cable is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to submarine cable technical field, concretely is a kind of anticorrosive armored cable for submarine environment. BACKGROUND

[0002] Submarine cable is the wire wrapped with insulating material, laid in seabed, mainly used for telecommunication transmission, and it is mainly divided into two categories: submarine communication cable and submarine power cable.

[0003] The utility model discloses a kind of submarine cables, the submarine cable includes outer skin, armored layer and cable core, the armored layer is sequentially provided with outer insulation sleeve and inner insulation sleeve from outside to inside between cable core, the gap is left between the outer insulation sleeve and inner insulation sleeve, multiple embrace rings are fixed on the outside of inner insulation sleeve along the length direction of cable at intervals, two adjacent embrace rings are connected by connecting band, the outer insulation sleeve is pressed and covers connection embrace ring.This cable is built-in connecting band and steel wire rope, when cable is subjected to great force pulling during laying or in the process of use, cable can have slight elongation, when connecting band and steel wire rope are straightened, connecting band and steel wire rope immediately begin to bear and resist pulling force, only when connecting band, steel wire rope are lengthened or even broken, cable core can begin to bear pulling force.Compared with general submarine cable, when the same size pulling force is applied, the pulling force borne by the cable core of this kind of submarine cable is greatly reduced, and the cable core is difficult to be broken.The cable core of this kind of submarine cable is effectively protected, and its anti-pulling performance is very excellent.Although the submarine cable effectively protects cable core, the device still has the following problems in actual use: the cable is provided with outer skin, armored layer, outer insulation sleeve and inner insulation sleeve from outside to inside, wherein the outer skin is made of material only resistant to seawater corrosion, and the single-layer anticorrosion design leads to poor anticorrosion effect of the cable, which is difficult to meet the anticorrosion requirements of submarine cable, and therefore, the utility model provides a kind of anticorrosive armored cable for submarine environment. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, one purpose of the utility model is to provide an anticorrosive armored cable for submarine environment, which can form a multi-layer anticorrosion structure under the action of the first coating, the second coating and the third coating in cooperation with the sheath layer made of anticorrosive material, and has both protection performance and mechanical flexibility, thereby improving the anticorrosion performance and service life of the submarine cable.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] An anticorrosion armored cable for seabed environment comprises a filling layer, a plurality of insulation layers arranged inside the filling layer, a shielding layer arranged inside the insulation layers, and a conductor arranged inside the shielding layer;

[0007] A first steel wire is fixed at the inside center of the filling layer, and a plurality of second steel wires are arranged on the circumferential side of the first steel wire;

[0008] A buffer layer is arranged outside the filling layer, a composite armored layer is arranged outside the buffer layer, the composite armored layer is composed of steel belts and tin-plated copper belts, the steel belts and the tin-plated copper belts are spirally wound outside the buffer layer, and the steel belts and the tin-plated copper belts are staggered;

[0009] A composite anticorrosion coating layer is arranged outside the composite armored layer, and the composite anticorrosion coating layer comprises a first coating layer, a second coating layer and a third coating layer arranged in sequence from inside to outside;

[0010] A sheath layer is arranged outside the composite anticorrosion coating layer, and a plurality of fixing rings are fixed to the outer wall of the sheath layer;

[0011] A plurality of wear-resistant layers are arranged on the circumferential side of the sheath layer, the wear-resistant layers are fixedly connected to the outer wall of the fixing rings, and a plurality of convex ribs are fixed to the outer wall of the wear-resistant layers.

[0012] In addition, the anticorrosion armored cable for seabed environment according to the application can have the following additional technical features:

[0013] Specifically, the cross-sectional shape of the first steel wire is circular, and the cross-sectional shape of the second steel wire is trapezoidal.

[0014] Specifically, the first coating layer, the second coating layer and the third coating layer are a nano zirconium oxide ceramic particle layer, a graphene layer and a hydrophobic polyurethane layer in sequence, and the coating thickness of the third coating layer is 0.8-1.2 mm.

[0015] Specifically, the buffer layer is made of basalt fiber and hydrogenated nitrile rubber composite material, and the thickness of the buffer layer is 2-4 mm.

[0016] Specifically, the filling layer has a honeycomb porous structure, and the filling layer is formed by using a three-layer co-extrusion process of water-blocking type polypropylene, acrylamide copolymer and basalt chopped fiber.

[0017] Specifically, the wear-resistant layer is made of tungsten carbide particle reinforced composite material, and the cross-sectional shape of the convex rib is semicircular.

[0018] Compared with the prior art, the anticorrosion armored cable for seabed environment has the following beneficial effects:

[0019] 1. The composite anticorrosive coating is provided, the anticorrosive material sheath layer can form a multilayer anticorrosive structure under the action of the first coating, the second coating and the third coating, mechanical flexibility is considered, and the anticorrosive performance and service life of the submarine cable are improved;

[0020] 2. The composite armor layer is provided, the structural strength of the armor layer and the protection effect on the cable body are ensured under the action of the spiral steel belt and the tin-plated copper belt, the electromagnetic shielding effect can be achieved, and the performance of the cable is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an overall structure schematic view of the utility model;

[0022] Figure 2 It is an overall structure schematic view of the utility model Figure 1 It is an enlarged structure schematic view of A part in the utility model;

[0023] Figure 3 It is a structure schematic view of the composite armor layer in the utility model;

[0024] Figure 4 It is a structure schematic view of the composite anticorrosive coating in the utility model;

[0025] Figure 5 It is a structure schematic view of the sheath layer in the utility model;

[0026] In the drawing:

[0027] 1, conductor;

[0028] 2, shielding layer;

[0029] 3, insulation layer;

[0030] 4, filling layer;

[0031] 5, first steel wire;

[0032] 6, buffer layer;

[0033] 7, composite armor layer; 70, steel belt; 71, tin-plated copper belt;

[0034] 8, composite anticorrosive coating; 80, first coating; 81, second coating; 82, third coating;

[0035] 9, sheath layer;

[0036] 10, fixing ring;

[0037] 11, wear-resistant layer; 110, rib;

[0038] 12. The second steel wire. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0040] The embodiment provides a technical scheme:

[0041] Please refer to Figures 1-5 As shown in the figure, an anti-corrosion armored cable for seabed environment comprises a filler layer 4, a plurality of insulation layers 3 are arranged inside the filler layer 4, a shielding layer 2 is arranged inside the insulation layer 3, and a conductor 1 is arranged inside the shielding layer 2; a first steel wire 5 is fixed at the center of the inside of the filler layer 4, and a plurality of second steel wires 12 are arranged on the periphery of the first steel wire 5; a buffer layer 6 is arranged outside the filler layer 4, a composite armored layer 7 is arranged outside the buffer layer 6, the composite armored layer 7 is composed of a steel band 70 and a tinned copper band 71, the steel band 70 and the tinned copper band 71 are spirally wound outside the buffer layer 6, and the steel band 70 and the tinned copper band 71 are arranged in an interlaced manner; a composite anti-corrosion coating 8 is arranged outside the composite armored layer 7, the composite anti-corrosion coating 8 comprises a first coating 80, a second coating 81 and a third coating 82 arranged in sequence from inside to outside; a sheath layer 9 is arranged outside the composite anti-corrosion coating 8, and a plurality of fixing rings 10 are fixed to the outer wall of the sheath layer 9; a plurality of wear-resistant layers 11 are arranged on the periphery of the sheath layer 9, the wear-resistant layers 11 are fixedly connected to the outer wall of the fixing rings 10, and a plurality of ribs 110 are fixed to the outer wall of the wear-resistant layers 11.

[0042] In the embodiment, the cross-sectional shape of the first steel wire 5 is circular, and the cross-sectional shape of the second steel wire 12 is trapezoidal. The circular design provides axial tensile strength, and the trapezoidal design forms a three-dimensional stress dispersion network through lateral bending stiffness, so that the impact resistance of the cable is improved by using the design.

[0043] In the embodiment, the first coating 80, the second coating 81 and the third coating 82 are a nano zirconium oxide ceramic particle layer, a graphene layer and a hydrophobic polyurethane layer in sequence, and the coating thickness of the third coating 82 is 0.8-1.2 mm. The coating thickness of the third coating 82 is preferably 1 mm, the multi-level coating design combines the advantages of different materials, and the overall wear resistance, corrosion resistance and hydrophobicity are improved.

[0044] In the embodiment, the buffer layer 6 is made of basalt fiber and hydrogenated nitrile rubber composite material, and the thickness of the buffer layer 6 is 2-4 mm. The preferred thickness of the buffer layer 6 is 3 mm, and the composite material combines the high strength of basalt fiber and the excellent elasticity of hydrogenated nitrile rubber, thereby providing good buffering effect and wear resistance.

[0045] In the embodiment, the filling layer 4 has a honeycomb porous structure, and the filling layer 4 is formed by using a three-layer co-extrusion process of water-blocking type polypropylene, acrylamide copolymer and basalt chopped fiber. The honeycomb porous structure helps to improve the strength and stability of the filling layer 4 while reducing the weight, and the combination of multiple materials and the three-layer co-extrusion process improves the water resistance and mechanical strength of the filling layer 4.

[0046] In the embodiment, the wear-resistant layer 11 is made of tungsten carbide particle reinforced composite material, and the cross-sectional shape of the ribs 110 is semicircular. The design of the tungsten carbide particle reinforced composite material significantly improves the hardness and wear resistance of the wear-resistant layer 11, and the semicircular design helps to increase the contact area of the wear-resistant layer 11 and the contact surface, thereby improving the wear resistance. Meanwhile, the semicircular cross-section also reduces stress concentration during wear, thereby prolonging the service life.

[0047] It should be noted that the sheath layer 9 in the embodiment is made of a material resistant to seawater corrosion, which improves the corrosion resistance of the sheath layer 9, thereby forming a better corrosion protection effect on the outside of the cable body in cooperation with the composite corrosion protection coating 8.

[0048] In addition, the wear-resistant layer 11 in the embodiment is fixedly connected with the plurality of fixing rings 10 through bolts, and the bolt fixing mode not only has the advantage of firm connection, but also has the advantage of easy installation, thereby ensuring the firmness and convenience of installation of the wear-resistant layer 11.

[0049] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the utility model and do not limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion protected armored cable for use in a subsea environment, characterized by: The filling layer (4) is internally provided with a plurality of insulation layers (3), the insulation layer (3) is internally provided with a shielding layer (2), and the shielding layer (2) is internally provided with a conductor (1); The first steel wire (5) is fixed at the center of the inside of the filling layer (4), and the periphery of the first steel wire (5) is provided with a plurality of second steel wires (12); The filling layer (4) is externally provided with a buffer layer (6), and the buffer layer (6) is externally provided with a composite armored layer (7), the composite armored layer (7) is composed of a steel belt (70) and a tinned copper belt (71), the steel belt (70) and the tinned copper belt (71) are spirally wound outside the buffer layer (6), and the steel belt (70) and the tinned copper belt (71) are staggered; The composite armored layer (7) is externally provided with a composite corrosion-resistant coating (8), and the composite corrosion-resistant coating (8) comprises a first coating (80), a second coating (81) and a third coating (82) arranged in sequence from inside to outside; The composite corrosion-resistant coating (8) is externally provided with a sheath layer (9), and the outer wall of the sheath layer (9) is fixed with a plurality of fixing rings (10); The periphery of the sheath layer (9) is provided with a plurality of wear-resistant layers (11), the wear-resistant layers (11) are fixedly connected with the outer wall of the fixing rings (10), and the outer wall of the wear-resistant layers (11) is fixed with a plurality of convex ribs (110).

2. The anti-corrosion armored cable for a subsea environment according to claim 1, characterized in that: The cross-sectional shape of the first steel wire (5) is circular, and the cross-sectional shape of the second steel wire (12) is trapezoidal.

3. The anti-corrosion armored cable for a subsea environment of claim 1, characterized in that: The first coating (80), the second coating (81) and the third coating (82) are in turn a nano zirconium oxide ceramic particle layer, a graphene layer and a hydrophobic polyurethane layer, and the coating thickness of the third coating (82) is 0.8-1.2mm.

4. The anti-corrosion armored cable for a subsea environment of claim 1, characterized in that: The thickness of the buffer layer (6) is 2-4mm.

5. The anti-corrosion armored cable for a subsea environment of claim 1, wherein: The filling layer (4) is in a honeycomb porous structure.

6. The anti-corrosion armored cable for subsea environment of claim 1, characterized by: The wear-resistant layer (11) is composed of tungsten carbide particle reinforced composite material, and the cross-sectional shape of the convex rib (110) is semicircular.

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