CN213025460U

CN213025460U - Pressure-resistant anti-corrosion submarine cable

Info

Publication number: CN213025460U
Application number: CN202022120280.3U
Authority: CN
Inventors: 李建锋; 郜慧转; 刘应军; 姚正宽; 王佳琪; 张小冬
Original assignee: Henan Hongxin Aluminum Co ltd
Current assignee: Henan Hongxin Aluminum Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-04-20
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a withstand voltage anticorrosion submarine cable relates to cable technical field, including cable core, insulating layer, cable sheath, the cable core uses the copper core to make, the surface of cable core from inside to outside in proper order by insulating layer, cable sheath parcel, still be equipped with buffer layer, interior anticorrosive coating, withstand voltage between insulating layer, the cable sheath, buffer layer, interior anticorrosive coating, withstand voltage layer set gradually from inside to outside, the cable sheath is made by chloroprene rubber, the buffer layer is made by foamed plastic, interior anticorrosive coating is made by polytetrafluoroethylene, the withstand voltage layer material is polyvinyl chloride, the buffer layer is polyurethane foamed plastic or polyvinyl chloride foamed plastic, the utility model is used for sea-island transmission line's seabed is laid, has anticorrosion effectual, high pressure resistant advantage, has solved current submarine cable anticorrosive coating and has easily come off, The water pressure is not resisted.

Description

Pressure-resistant anti-corrosion submarine cable

Technical Field

The utility model relates to the technical field of cables, specifically be a withstand voltage anticorrosion submarine cable.

Background

A large number of islands are arranged in the territory of China, most of the islands are in an undeveloped state, various policies of China encourage enterprises to develop unmanned islands, the unmanned islands lack infrastructure, especially power supply, so that the development and construction of the unmanned islands are influenced, most of unmanned islands to be developed lack power generation conditions, power transmission from inland is needed, the conventional cables are mostly used for erecting telegraph poles or burying under the poles, the cables need to be buried under the sea for power transmission to the islands, the outer surfaces of the cables need to be subjected to anticorrosion treatment due to a large amount of corrosive substances contained in seawater and seabed sediments, so that the service lives of the cables are prevented from being influenced, the submarine cables are mostly subjected to anticorrosion coating spraying on the surfaces, but the coatings are easy to thin and fall off due to seawater scouring, and when the cables are exposed from seabed sediment, the anticorrosion coatings fall off in a short period, the cable sheath at the exposed part is corroded and aged, and the service life of the cable is influenced.

In addition, because seabed pressure is far greater than atmospheric pressure, cable sheath and inside insulating layer contract under the water pressure effect, hug closely on the cable core surface, because the metal material hardness that the cable core used is big, make cable elasticity descend, easily produce the crack at the cable sheath after long-time the washing, lose insulating effect gradually.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the submarine cable is good in anti-corrosion effect and high-pressure resistant, and solves the problems that an anti-corrosion coating in the prior art is easy to fall off and is not resistant to water pressure in the background art.

The utility model adopts the technical scheme as follows:

the utility model provides a withstand voltage anticorrosion submarine cable, includes cable core, insulating layer, cable sheath, the cable core uses the copper core to make, the surface of cable core is by from inside to outside in proper order insulating layer, cable sheath parcel, still be equipped with buffer layer, interior anticorrosive coating, withstand voltage layer between insulating layer, the cable sheath, buffer layer, interior anticorrosive coating, withstand voltage layer set gradually from inside to outside, the cable sheath is made by chloroprene rubber, the thickness of cable sheath is not less than 10 mm.

Further, the buffer layer is made of foam plastics, the thickness of the buffer layer is 5-10mm, and the porosity of the buffer layer is 60% -80%.

Further, the inner anti-corrosion layer is made of polytetrafluoroethylene.

Furthermore, the pressure-resistant layer is made of polyvinyl chloride, and the thickness of the pressure-resistant layer is 5-10 mm.

Further, the buffer layer is polyurethane foam or polyvinyl chloride foam.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) the utility model discloses use chloroprene rubber as the cable skin, compare in ordinary rubber, chloroprene rubber has good salt-tolerant, corrosion-resistant effect, can replace anticorrosive paint's effect, and has avoided the problem that anticorrosive paint easily drops, through set up the inner anticorrosive coating in cable skin inboard, when the cable skin breaks in long-term use, still can play anticorrosive effect, the life of extension cable.

(2) The utility model discloses set up the resistance to pressure between cable sheath and interior anticorrosive coating, the resistance to pressure uses polyvinyl chloride to make, it is big to have intensity, the advantage that elasticity is good, be difficult to produce under submarine pressure and warp, and be equipped with the buffer layer in the resistance to pressure inboard, the buffer layer uses the foam material of easy compression, wherein contain a large amount of air, can produce shrink by a relatively large margin when receiving the extrusion, and still have good elasticity after receiving the extrusion, form one deck buffer structure between resistance to pressure and insulating layer, prevent pressure from transmitting to the insulating layer from the resistance to pressure, prevent that cable sheath and insulating layer from hugging closely in the cable core outside under the pressure effect, influence cable elasticity.

Drawings

Fig. 1 is a three-dimensional structure diagram of the present invention.

The labels in the figure are: 1-cable core, 2-insulating layer, 3-buffer layer, 4-inner anti-corrosion layer, 5-voltage-resistant layer and 6-cable sheath.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

A pressure-resistant anti-corrosion submarine cable comprises a cable core 1, an insulating layer 2 and a cable sheath 6, wherein the cable core 1 is 150 square (mm)²) The copper core make, the surface of cable core 1 is by insulating layer 2 from inside to outside in proper order, 6 parcels of cable skin, the insulating layer is the cross-linking PVC material that 5mm is thick, the thermostability is good, high mechanical strength, and good insulating effect has, cable skin 6 is made by chloroprene rubber, the thickness of cable skin 6 is 10mm, chloroprene rubber has good corrosion protection effect, especially, salt class to in sea water and the seabed silt has good endurance capacity, insulating layer 2, still be equipped with buffer layer 3 between the cable skin 6, interior anticorrosive coating 4, withstand voltage 5, buffer layer 3, interior anticorrosive coating 4, withstand voltage 5 sets gradually from inside to outside.

Buffer layer 3 is made by the polyurethane foam that the porosity is 80%, and the thickness of buffer layer 3 is between being 8mm for cushion the pressure between resistance to pressure 5 and insulating layer 2, and interior anticorrosive coating 4 is made by polytetrafluoroethylene, all has excellent tolerance ability to corrosive substance such as acid, alkali, and heat-resisting, cold-resistant, antifriction, and the resistance to pressure 5 material is polyvinyl chloride, and the hardness is high, non-deformable, and the compressive capacity is strong, and the thickness of resistance to pressure 5 is 8 mm.

The working principle is as follows: during the use, use special ship to lay according to laying the route, bury this submarine cable about 1 meter in the seabed, and use silt to cover, corrosive substance receives the blockking of cable skin 6 at first, can't cause destruction to the cable is inside, when cable skin 6 inwards contracts under the pressure effect, can receive the supporting role of resistance to

pressure

5, 5 small amplitude shrinkages of resistance to pressure simultaneously, extrude interior anticorrosive coating 4 and buffer layer 3, buffer layer 3 contractility is far away than anticorrosive coating 4 and resistance to pressure 5, most extrusion force has been absorbed, the extrusion force that makes cable skin 6 receive passes through resistance to pressure 5, buffer layer 3's twice weakening reduces by a wide margin, avoid cable skin 6 and insulating layer 2, cable core 1 extrudees together, thereby make the cable still have good elasticity after the contraction under the pressure effect.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a withstand voltage anticorrosion submarine cable, includes cable core (1), insulating layer (2), cable sheath (6), cable core (1) uses the copper core to make, the surface of cable core (1) is by from inside to outside in proper order insulating layer (2), cable sheath (6) parcel, a serial communication port, still be equipped with buffer layer (3), interior anticorrosive coating (4), resistance to pressure layer (5) between insulating layer (2), cable sheath (6), buffer layer (3), interior anticorrosive coating (4), resistance to pressure layer (5) set gradually from inside to outside, cable sheath (6) are made by chloroprene rubber, the thickness of cable sheath (6) is not less than 10 mm.

2. A pressure resistant anti-corrosion submarine cable according to claim 1, wherein said buffer layer (3) is made of foamed plastic, said buffer layer (3) has a thickness of between 5 and 10mm, and said buffer layer (3) has a porosity of between 60% and 80%.

3. A pressure resistant anti-corrosion submarine cable according to claim 1, wherein the inner corrosion protection layer (4) is made of polytetrafluoroethylene.

4. The pressure-resistant anti-corrosion submarine cable according to claim 1, wherein the pressure-resistant layer (5) is made of polyvinyl chloride, and the thickness of the pressure-resistant layer (5) is 5-10 mm.

5. A pressure tight anti-corrosion submarine cable according to claim 2, wherein said buffer layer (3) is a polyurethane foam or a polyvinyl chloride foam.