Submarine cable capable of preventing benthos from being damaged

Abstract

The invention provides a submarine cable capable of preventing submarine organisms from being damaged. The submarine cable comprises a cable main body and a repelling device, the repelling device comprises an outer armor layer and an outer sheath layer; the outer armor layer comprises a plurality of first armor wires and second armor wires which wrap the cable main body, and the first armor wires and the second armor wires are alternately arranged; a plurality of repelling mechanisms and a plurality of supporting sleeves are sleeved outside the second armored wire, and the repelling mechanisms and the supporting sleeves are alternately arranged; each repelling mechanism comprises an inner sleeve, a water absorbing material, an outer sleeve and a plugging plate; the inner sleeve is sleeved outside the second armored wire; the outer sleeve is sleeved outside the inner sleeve; the water absorbing material is filled between the inner sleeve and the outer sleeve and adsorbs repellent liquid; and the plugging plate is used for plugging two sides between the inner sleeve and the outer sleeve. When the outer sleeve of the repelling device is bitten by benthos, the water absorbing material in the outer sleeve is extruded to release the repelling liquid, so that the benthos are repelled, the cable main body is protected from being damaged, and normal use of the submarine cable is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a submarine cable that can prevent submarine organisms from damaging it. Background Art

[0002] At present, when laying submarine cables, they are laid according to the pre-explored route. For shallow sea areas, trenches are usually dug while submarine cables are placed in the trenches, and finally buried with soil to cover them. For deep sea areas with a certain depth, buoys are used to hang submarine cables in the seawater. Cables exposed in the seawater face attacks from marine life, especially sharks and other marine life, which may bite through the outer layer of the cable, causing damage to the inside of the cable and affecting the normal transmission of the cable. At the same time, it is difficult to repair it in the deep sea. Therefore, it is necessary to carry out certain anti-submarine biological protection on the submarine cable. At present, in response to shark attacks, some technicians have adopted the method of applying orange paint on the outside of the submarine cable to repel sharks, but it is only applicable to seawater areas with a little brightness. For seawater areas with low brightness, the protection effect is not ideal. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a submarine cable that can effectively repel submarine creatures, especially sharks, and prevent them from biting the cable body.

[0004] The purpose of the present invention is achieved through the following technical solutions: A submarine cable for preventing submarine organisms from destroying comprises a cable body, and a repelling device is further arranged outside the cable body; the repelling device comprises an outer armor layer and an outer sheath layer; the outer armor layer comprises a plurality of first armor wires and a plurality of second armor wires wrapped around the cable body along the length direction of the cable body, and the first armor wires and the second armor wires are arranged alternately, and the diameter of the first armor wire is greater than the diameter of the second armor wire; a plurality of repelling mechanisms and a plurality of supporting sleeves are arranged outside the second armor wire, and the repelling mechanisms and the supporting sleeves are arranged alternately; each repelling mechanism comprises an inner sleeve, a water-absorbing material, an outer sleeve and a blocking plate; the inner sleeve is sleeved outside the second armor wire; the outer sleeve is sleeved outside the inner sleeve; the water-absorbing material is filled between the inner sleeve and the outer sleeve, and a repelling liquid for repelling submarine organisms is adsorbed in the water-absorbing material; the blocking plate blocks both sides of the cavity formed between the inner sleeve and the outer sleeve, and blocks the water-absorbing material in the cavity between the inner sleeve and the outer sleeve.

[0005] The beneficial effects of the present invention are as follows: The present invention arranges a repellent device outside the cable body of the existing submarine cable. When the submarine organisms bite through the outer sleeve of the repellent device, the water-absorbing material in the outer sleeve will be squeezed to release the repellent liquid to repel the submarine organisms, thereby protecting the cable body. The whole structure is scientific and reasonable. The arrangement of the repellent device can effectively protect the cable body from being damaged by the submarine organisms, thereby ensuring the normal use of the submarine cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The structure of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0007] Figure 1 This is a cross-sectional view of the submarine cable that is resistant to damage by submarine organisms according to the present invention.

[0008] Figure 2 It is a schematic diagram of the partial structure of the inner and outer armor layers of the submarine cable for preventing submarine organisms from damaging the submarine cable according to the present invention.

[0009] Figure 3 For along Figure 2 Cross-sectional view along the AA direction.

[0010] Figure 4 For along Figure 2 Cross-sectional view along the BB direction.

[0011] Figure 5 It is a schematic structural diagram of the second armored wire and its external repelling mechanism in the submarine cable for preventing submarine organisms from damaging it according to the present invention.

[0012] As shown in the figure: 1-conductor, 2-wrapping layer, 3-insulating layer, 4-insulating shielding layer, 5-oil guide pipe, 6-filling layer, 7-metal shielding layer, 8-metal protective sleeve, 9-inner lining layer, 10-inner armor layer, 11-inner sheath layer, 12-outer armor layer, 121-first armor wire, 122-second armor wire, 123-repellent mechanism, 1231-inner sleeve, 1232-water-absorbing material, 1233-outer sleeve, 1234-sealing plate, 124-support sleeve, 13-outer sheath layer. DETAILED DESCRIPTION

[0013] The following is an explanation of the implementation of the present invention by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. Example

[0016] like Figures 1 to 5 As shown, this embodiment provides a submarine cable for preventing submarine creatures from damaging it, comprising a cable body and a repelling device. The submarine cable belongs to a submarine power cable, and the submarine creature is a shark.

[0017] The cable body comprises a cable core, an oil guide tube 5 , a filling layer 6 , a metal shielding layer 7 , a metal protective sleeve 8 , an inner lining layer 9 , an inner armor layer 10 and an inner sheath layer 11 .

[0018] The number of the cable cores is three and they are evenly distributed inside the metal shielding layer 7. Each cable core includes a conductor 1, a wrapping layer 2, an insulating layer 3 and an insulating shielding layer 4 from the inside to the outside. The conductor 1 is made of a plurality of copper wires twisted together and has a circular cross-section. The wrapping layer 2 is a semi-conductive material wrapped around the conductor 1, such as a semi-conductive cloth tape. The insulating layer 3 is formed by extruding a cross-linked polyethylene insulating material outside the wrapping layer 2. The insulating shielding layer 4 is formed by extruding a semi-conductive polyethylene material outside the insulating layer 3 to evenly distribute the electric field and provide additional protection.

[0019] There are three oil guide pipes 5 evenly distributed inside the metal shielding layer 7 , one oil guide pipe 5 is arranged between every two adjacent cable cores, and insulating oil circulates in each oil guide pipe 5 .

[0020] The filling layer 6 is filled between the cable core and the metal shielding layer 7 and between the oil guide pipe 5 and the metal shielding layer 7. The material used for the filling layer 6 is polypropylene rope, glass fiber rope, asbestos rope, rubber and the like.

[0021] The metal shielding layer 7, metal protective sleeve 8, inner lining layer 9, inner armor layer 10 and inner sheath layer 11 are arranged concentrically from the inside to the outside, and all the cable cores, oil guide tubes 5 and filling layers 6 are wrapped therein. The metal shielding layer 7 is a copper wire mesh woven from copper wires, which is used to shield the electromagnetic field generated by the power supply of the cable core, and at the same time, it homogenizes the electric field to prevent axial discharge; the metal protective sleeve 8 is a lead sleeve with good mechanical properties and shielding effect, which is used to provide mechanical protection and shielding; the inner lining layer 9 is formed by wrapping the metal protective sleeve 8 with oil hemp impregnation; the inner armor layer 10 is formed by spirally winding a flat copper belt around the inner lining layer 9 to protect the cable; the inner sheath layer 11 is made of polyethylene (PE) or other environmentally resistant materials to prevent mechanical damage and corrosion.

[0022] In addition to the above cable body structure of the existing conventional submarine power cable, this embodiment also provides a repelling device outside the conventional cable body.

[0023] The repelling device includes an outer armor layer 12 and an outer sheath layer 13 .

[0024] like Figure 2-5 As shown, the outer armor layer 12 includes a plurality of first armor wires 121 and a plurality of second armor wires 122 which are spirally wrapped around the outside of the cable body along the length direction of the cable body, and the first armor wires 121 and the second armor wires 122 are alternately arranged, the diameter of the first armor wire 121 is greater than the diameter of the second armor wire 122, and the first armor wires 121 and the second armor wires 122 are made of galvanized steel wire or other high-strength materials to enhance the tensile and compressive properties of the cable.

[0025] A plurality of repelling mechanisms 123 and a plurality of supporting sleeves 124 are provided on the outer jacket of the second armored wire 122, and the repelling mechanisms 123 and the supporting sleeves 124 are alternately provided on the second armored wire 122. During installation, the repelling mechanisms 123 and the supporting sleeves 124 are continuously and alternately provided on the second armored wire 122, and the supporting sleeves 124 are provided at both ends of the second armored wire 122. In the middle of the second armored wire 122, a supporting sleeve 124 is provided adjacent to both sides of each repelling mechanism 123. Each repelling mechanism 123 is surrounded by two first armored wires 121 and two supporting sleeves 124, respectively. While repelling sharks, the mechanical strength, tensile strength and compressive strength of the cable are effectively ensured, and the repelling mechanism 123 is provided with pressure resistance protection at the same time.

[0026] like Figure 3 and Figure 5 As shown, each repelling mechanism 123 includes an inner sleeve 1231, a water-absorbing material 1232, an outer sleeve 1233 and a blocking plate 1234. The inner sleeve 1231 is sleeved outside the second armor wire 122. The outer sleeve 1233 is concentrically sleeved outside the inner sleeve 1231, and an annular accommodating cavity is formed between the outer sleeve 1233 and the inner sleeve 1231. The outer diameter of the outer sleeve 1233 is equal to the diameter of the first armor wire 121 and the outer diameter of the support sleeve 124. The water-absorbing material 1232 is filled between the inner sleeve 1231 and the outer sleeve 1233, and the water-absorbing material 1232 is a tubular body made of a water-absorbing sponge and sleeved outside the inner sleeve 1231. The water-absorbing material 1232 contains a repellent liquid for repelling seabed creatures. The repellent liquid is made of any one or more of the juices selected from lemon, vanilla and mint. After the water-absorbing material 1232 is sleeved between the outer sleeve 1233 and the inner sleeve 1231, the repellent liquid is injected into the water-absorbing material 1232 until it is saturated. Finally, the sealing plate 1234 is used to seal the accommodating cavity between the inner sleeve 1231 and the outer sleeve 1233.

[0027] The blocking plates 1234 are two pieces and are respectively blocked at both sides of the cavity formed between the inner sleeve 1231 and the outer sleeve 1233, so as to block the water-absorbing material 1232 in the cavity between the inner sleeve 1231 and the outer sleeve 1233. The inner sleeve 1231, the outer sleeve 1233 and the blocking plates 1234 are all made of ethylene propylene rubber (EPR), which has good water resistance, weathering resistance and light resistance stability, and flame retardant properties.

[0028] The support sleeve 124 is a tubular body made of galvanized steel, and the length of the support sleeve 124 is smaller than the length of the outer sleeve.

[0029] The outer sheath layer 13 is sleeved outside the outer armor layer 12 and is also made of polyethylene (PE) or other environmentally resistant materials as a final protective layer to prevent mechanical damage and corrosion.

[0030] The submarine cable for preventing submarine organisms from damaging the cable in the present embodiment is laid and buried in the seabed mud. However, after being exposed for various reasons, if a shark bites it, it will first bite through the outer sheath layer 13, and then bite through the outer sleeve 1233 of the repellent mechanism 123 on the outer armor layer 12. When the outer sleeve 1233 is bitten, the water-absorbing material 1232 inside it will be squeezed, so that the repellent liquid in the water-absorbing material 1232 is squeezed out from the breach and sprayed into the shark's mouth or near the mouth. Since there is an odor in the repellent liquid that makes the shark feel uncomfortable, the shark will instinctively stay away from the submarine cable to prevent the shark from further biting through the cable body, effectively protecting the cable and ensuring the normal operation of the submarine cable. At the part bitten by the shark, the water-absorbing material will continuously release the odor, prompting the shark not to approach easily. Even if it approaches many times and feels uncomfortable, after forming a conditioned reflex, the shark in the area will instinctively stay away from the area, indirectly avoiding secondary damage.

[0031] Similarly, if you want to repel sea creatures other than sharks that like to gnaw on cables, you only need to add the corresponding substances that the sea creatures repel into the repellent liquid.

[0032] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0033] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A submarine cable that can prevent submarine organisms from damaging it, comprising a cable body, characterized in that: A repelling device is also arranged outside the cable body; the repelling device includes an outer armor layer and an outer sheath layer; the outer armor layer includes a plurality of first armor wires and a plurality of second armor wires wrapped around the outside of the cable body along the length direction of the cable body, and the first armor wires and the second armor wires are arranged alternately, and the diameter of the first armor wire is greater than the diameter of the second armor wire; a plurality of repelling mechanisms and a plurality of supporting sleeves are arranged outside the second armor wire, and the repelling mechanisms and the supporting sleeves are arranged alternately; each repelling mechanism includes an inner sleeve, a water-absorbing material, an outer sleeve and a sealing plate; the inner sleeve is sleeved outside the second armor wire; the outer sleeve is sleeved outside the inner sleeve; the water-absorbing material is filled between the inner sleeve and the outer sleeve, and a repelling liquid for repelling seabed organisms is adsorbed in the water-absorbing material; the sealing plate seals both sides of the cavity formed between the inner sleeve and the outer sleeve.

2. The submarine cable against damage by submarine organisms according to claim 1, characterized in that: The first armor wire and the second armor wire are wires made of high-strength material.

3. The submarine cable against damage by submarine organisms according to claim 2, characterized in that: The first armor wire and the second armor wire are both galvanized steel wires.

4. The submarine cable against submarine organism damage according to claim 1, characterized in that: The length of the support sleeve is smaller than the length of the outer sleeve.

5. The submarine cable against submarine organism damage according to claim 1, characterized in that: The support sleeve is a tubular body made of galvanized steel; the inner sleeve, outer sleeve and sealing plate are made of ethylene propylene rubber (EPR); the water-absorbing material is a tubular body made of water-absorbing sponge and sleeved outside the inner sleeve.

6. The submarine cable against damage by submarine organisms according to claim 1, characterized in that: The outer diameter of the outer sleeve is equal to the diameter of the first armored wire and the outer diameter of the supporting sleeve.

7. The submarine cable against damage by submarine organisms according to claim 1, characterized in that: The seabed creature is a shark; the repellent liquid is made of any one or more of lemon, vanilla and mint.

8. The submarine cable resistant to submarine organism damage according to any one of claims 1 to 8, characterized in that: The cable body comprises a cable core and a metal shielding layer, a metal protective sleeve, an inner lining layer, an inner armor layer and an inner sheath layer which are sequentially sleeved on the cable core from the inside to the outside, and a filling layer is arranged between the cable core and the shielding layer.

9. The submarine cable against damage by submarine organisms according to claim 9, characterized in that: An oil guide pipe is also provided between the cable core and the metal shielding layer, and insulating oil circulates through the oil guide pipe.

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