阅读说明：本技术 一种抗压、防水、耐腐蚀海底电缆 (Pressure-resistant, waterproof and corrosion-resistant submarine cable ) 是由 李万松 朱峰林 闵泽宇 于 2021-06-04 设计创作，主要内容包括：本发明涉及抗压、防水、耐腐蚀海底电缆技术领域,且公开了一种抗压、防水、耐腐蚀海底电缆,包括外护套和位于外护套内的内护套,外护套和内护套之间设置有用于提高电缆抗压性的钢丝架,钢丝架和内护套之间设置有用于防止位于内护套内的电缆导体受潮的隔水膜,能够在一定程度上减少对电缆的压力,通过设置于外护套和内护套之间的钢丝架提高电缆对海底压强的抗性,同时通过polylevel剂,避免电缆局部受力过大,能够减缓电缆的老化速度,通过聚氯乙烯软层在一定程度上延长电缆的使用寿命,通过隔水膜能够防止水分子渗透入内护套内,腐蚀电缆导体,维持电信号的稳定,或者避免发生局部漏电,导致电能损耗过大,降低了维修成本。(The invention relates to the technical field of compression-resistant, waterproof and corrosion-resistant submarine cables, and discloses a compression-resistant, waterproof and corrosion-resistant submarine cable which comprises an outer sheath and an inner sheath positioned in the outer sheath, wherein a steel wire frame for improving the compression resistance of the cable is arranged between the outer sheath and the inner sheath, a water-proof film for preventing a cable conductor positioned in the inner sheath from being affected with damp is arranged between the steel wire frame and the inner sheath, the pressure on the cable can be reduced to a certain degree, the resistance of the cable to the submarine pressure is improved through the steel wire frame arranged between the outer sheath and the inner sheath, meanwhile, the local stress of the cable is prevented from being too large through a polylevel agent, the aging speed of the cable can be slowed down, the service life of the cable is prolonged to a certain degree through a polyvinyl chloride soft layer, water molecules can be prevented from permeating into the inner sheath through the water-proof film to corrode the cable conductor to maintain the stability of an electric signal, or local electric leakage is avoided, so that the electric energy loss is overlarge, and the maintenance cost is reduced.)

1. The utility model provides a resistance to compression, waterproof, corrosion-resistant submarine cable, includes oversheath (1) and is located inner sheath (9) in oversheath (1), its characterized in that: a steel wire frame (2) used for improving the pressure resistance of the cable is arranged between the outer sheath (1) and the inner sheath (9), and a water-stop film (6) used for preventing a cable conductor (10) located in the inner sheath (9) from being damped is arranged between the steel wire frame (2) and the inner sheath (9).

2. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 1, wherein: the steel wire frame (2) comprises a first steel wire mesh (21), a second steel wire mesh (22) and a supporting rod (23), the second steel wire mesh (22) is sleeved in the first steel wire mesh (21), and the supporting rod (23) is fixedly installed between the second steel wire mesh (22) and the first steel wire mesh (21).

3. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 2, wherein: the quantity of bracing piece (23) has a plurality of, and be the slant distribute in second wire net (22) with between first wire net (21).

4. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 1, wherein: oversheath (1) includes soft layer (12) of polyethylene layer (11) and polyvinyl chloride, soft layer (12) of polyvinyl chloride cup joint on the outer wall of first wire net (21), polyethylene layer (11) cup joint in on the outer wall of soft layer (12) of polyvinyl chloride.

5. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 1, wherein: the outer wall of the inner sheath (9) is coated with a semi-conducting layer (8), and the outer wall of the semi-conducting layer (8) is sleeved with a first protective sheath (7).

6. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 1, wherein: the waterproof film (6) is sleeved on the outer wall of the first protective sleeve (7), and the outer wall of the waterproof film (6) is sleeved with the second protective sleeve (5).

7. The pressure resistant, water resistant, corrosion resistant submarine cable according to claim 6, wherein: the outer wall of the second protective sleeve (5) is sleeved with a wear-resistant layer (3), a second steel wire mesh (22) is located on the outer wall of the wear-resistant layer (3), and a polylevel agent (4) is filled between the second protective sleeve (5) and the wear-resistant layer (3).

Technical Field

The invention relates to the technical field of pressure-resistant, waterproof and corrosion-resistant submarine cables, in particular to a pressure-resistant, waterproof and corrosion-resistant submarine cable.

Background

Submarine cables are cables wrapped with insulating materials and laid on the sea bottom for telecommunication transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for long-distance communication networks, are generally used between long-distance islands, and are used in cross-sea military facilities and other important occasions. The submarine power cable is laid at a much shorter distance than communication cables and is mainly used for interconnection between land islands, across rivers or estuaries, from land-based connection to or between drilling platforms, and the like.

According to patent No. 202010367130.4, a submarine cable is disclosed, comprising a plurality of power units, a filling unit and a protection unit, wherein the power units are arranged from inside to outside, each power unit comprises a water-blocking conductor and an insulating layer coated on the periphery of the water-blocking conductor, the power units further comprise a first metal shielding layer and a second metal shielding layer coated on the periphery of the insulating layer, the inner sides of the first metal shielding layer and the second metal shielding layer are respectively provided with a semi-conductive waterproof layer, the first metal shielding layer or the second metal shielding layer is of an extruded alloy lead sleeve structure, the first metal shielding layer or the second metal shielding layer is of an extruded alloy lead sleeve structure, so that the thickness of the lead sleeve is directly increased, and the mixed metal shielding type is adopted, so that the short-circuit current leakage capacity and the electric field balancing capacity are more advantageous, and the problem of insufficient short-circuit current capacity of the high-capacity submarine cable can be effectively solved.

The defects of the prior art are that when the cable is positioned on the seabed, the cable is easily pressed to be locally collapsed by huge pressure or deformed, the transmission of electric signals is not facilitated, meanwhile, water molecules easily penetrate into the inner sheath, the cable conductor is corroded, the electric signals are unstable, or local electric leakage occurs, and the electric energy loss is overlarge.

Disclosure of Invention

The invention aims to provide a pressure-resistant, waterproof and corrosion-resistant submarine cable, which can reduce the pressure on the cable to a certain extent, slow down the aging speed of the cable, prevent water molecules from entering an inner sheath and prolong the service life of the cable.

Technical scheme

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme: the pressure-resistant, waterproof and corrosion-resistant submarine cable comprises an outer sheath and an inner sheath positioned in the outer sheath, wherein a steel wire frame used for improving the pressure resistance of the cable is arranged between the outer sheath and the inner sheath, and a water-proof film used for preventing a cable conductor positioned in the inner sheath from being affected with damp is arranged between the steel wire frame and the inner sheath

Preferably, the steel wire frame comprises a first steel wire mesh, a second steel wire mesh and a support rod, the second steel wire mesh is sleeved in the first steel wire mesh, and the support rod is fixedly installed between the second steel wire mesh and the first steel wire mesh.

Preferably, the number of the supporting rods is a plurality, and the supporting rods are obliquely distributed between the second steel wire mesh and the first steel wire mesh.

Preferably, the outer sheath comprises a polyethylene layer and a polyvinyl chloride soft layer, the polyvinyl chloride soft layer is sleeved on the outer wall of the first steel wire mesh, and the polyethylene layer is sleeved on the outer wall of the polyvinyl chloride soft layer.

Preferably, the outer wall of the inner sheath is coated with a semi-conductive layer, and the outer wall of the semi-conductive layer is sleeved with a first protective sheath.

Preferably, the waterproof film is sleeved on the outer wall of the first protective sleeve, and the outer wall of the waterproof film is sleeved with the second protective sleeve.

Preferably, the outer wall of the second protective sleeve is sleeved with a wear-resistant layer, the second steel wire mesh is located on the outer wall of the wear-resistant layer, and a polylevel agent is filled between the second protective sleeve and the wear-resistant layer.

Compared with the prior art, the pressure-resistant, waterproof and corrosion-resistant submarine cable provided by the embodiment of the invention has the following beneficial effects:

the pressure on the cable can be reduced to a certain degree, when the cable is positioned on the seabed, the outer sheath is tightly attached to the outer side of the first steel wire mesh under the pressure of seawater, the first steel wire mesh and the second steel wire mesh are both net-shaped steel wire sleeves, the first steel wire mesh is supported by the supporting rod, the pressure is supported outside the inner sheath, the pressure on the outer surface of the outer sheath is inconsistent, the polylevel agent is filled between the wear-resistant layer and the second protective sheath, the polylevel agent plays a role of buffering, the force is prevented from being directly transmitted to the inner sheath, and the phenomenon that the conductor of the cable is damaged due to overlarge local pressure can be avoided.

The aging speed of the cable can be slowed down, the polyvinyl chloride soft layer is sleeved on the inner wall of the polyethylene layer, the polyvinyl chloride soft layer is good in chemical stability, has the characteristics of acid resistance, alkali resistance, humidity resistance, aging resistance and the like, and the service life of the cable can be prolonged to a certain extent.

The invention can prevent water molecules from entering the inner sheath, prevent the water molecules from permeating the inner sheath through the water-proof film, corrode a cable conductor, maintain the stability of an electric signal, or avoid local electric leakage to cause overlarge electric energy loss, and reduce the maintenance cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the inner structure of the outer sheath of the present invention;

FIG. 4 is a schematic view of the structure of the steel wire frame of the present invention;

FIG. 5 is a partial structural schematic diagram of the present invention.

In the figure: 1. an outer sheath; 2. a steel wire frame; 3. a wear layer; 4. a polylevel agent; 5. a second protective cover; 6. a water-barrier film; 7. a first protective sheath; 8. a semiconducting layer; 9. an inner sheath; 10. a cable conductor; 11. a polyethylene layer; 12. a polyvinyl chloride soft layer; 21. a first steel wire mesh; 22. a second steel wire mesh; 23. a support rod.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure will be more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The invention provides a pressure-resistant, waterproof and corrosion-resistant submarine cable which comprises an outer sheath 1 and an inner sheath 9 positioned in the outer sheath 1, wherein the resistance of the cable to submarine pressure is improved through a steel wire frame 2 arranged between the outer sheath 1 and the inner sheath 9.

The first embodiment is as follows:

as shown in fig. 1 to 5, a steel wire frame 2 for improving the pressure resistance of the cable is arranged between an outer sheath 1 and an inner sheath 9, the pressure on the cable can be reduced to a certain extent, when the cable is positioned on the seabed, the outer sheath 1 is tightly attached to the outer side of a first steel wire mesh 21 under the pressure of seawater, the first steel wire mesh 21 and a second steel wire mesh 22 are both mesh steel wire sleeves, the first steel wire mesh 21 is supported by a support rod 23, the pressure is supported outside the inner sheath 9, meanwhile, the pressure on the outer surface of the outer sheath 1 is inconsistent, a polylevel agent 4 is filled between a wear-resistant layer 3 and the second protective sheath 5, the polylevel agent has a buffering effect, the force is prevented from being directly transmitted to the inner sheath, the local pressure can be prevented from being too large, the cable conductor 10 is prevented from being damaged, and meanwhile, and the second steel wire mesh 22 can be prevented from being directly worn and damaged by the wear-resistant layer 3.

Wherein, as shown in fig. 2 and 5, be provided with between first protective sheath 7 and the second protective sheath 5 and be used for preventing the water-stop film 6 that is located the cable conductor 10 of inner sheath 9 and wets, can avoid in the hydrone gets into inner sheath 9, can prevent through water-stop film 6 that the hydrone from permeating into inner sheath 9, corrode cable conductor 10, the stability of the maintenance signal of telecommunication, or avoid taking place local electric leakage, lead to electric energy loss too big, maintenance cost is reduced, can protect water-stop film 6 through first protective sheath 7 and second protective sheath 5 simultaneously, avoid water-stop film 6 impaired.

Example two:

further, as shown in fig. 2 and 5, a polyvinyl chloride soft layer 12 is sleeved on the inner wall of the polyethylene layer 11, the polyvinyl chloride soft layer 12 has good chemical stability, has the characteristics of acid resistance, alkali resistance, moisture resistance, aging resistance and the like, can prolong the service life of the cable to a certain extent, and the polyethylene layer 11 has corrosion resistance and certain waterproofness, and can further protect the cable conductor 10.

Example three:

further, as shown in fig. 1, 2 and 5, the outer wall of the inner sheath 9 is coated with a semiconductive layer 8, the inner electric field is homogenized by the semiconductive layer 8 and the loss is reduced, and the semiconductive layer 8 is prevented from being scraped by the first protective sheath 7.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.