CN223321024U

CN223321024U - A submarine watertight cable

Info

Publication number: CN223321024U
Application number: CN202422053587.4U
Authority: CN
Inventors: 王成彬; 李明
Original assignee: SHANGHAI SHENYUAN HI-TEMP WIRE CO LTD
Current assignee: SHANGHAI SHENYUAN HI-TEMP WIRE CO LTD
Priority date: 2024-08-22
Filing date: 2024-08-22
Publication date: 2025-09-09
Anticipated expiration: 2034-08-22

Abstract

The utility model provides a submarine watertight cable, which relates to the technical field of wires and cables, and comprises a conductor, an insulating layer, a filling layer and an outer sheath, and also comprises a sealing resin; the conductor is made of a plurality of metal monofilaments twisted together, the sealing resin is filled between the metal monofilaments, and the insulating layer is wrapped around the outside of the metal monofilaments and the sealing resin; the gap between the conductor and the insulating layer is sealed by the sealing resin, so that the conductor can withstand greater water pressure and has better sealing performance, thereby alleviating the technical problem in the prior art that when the submarine watertight cable is used in a humid environment, water will invade the cable from the end of the wire and cable into the cable, causing the electrical performance of the cable to decline, thereby improving the water pressure resistance of the submarine watertight cable and extending the service life of the product.

Description

Submarine watertight cable

Technical Field

The utility model relates to the technical field of wires and cables, in particular to a submarine watertight cable.

Background

The electric wire and cable industry is an important matching industry for economic construction and is widely applied to various fields of national economy. In recent years, with the continuous and rapid development of economy in China, the urban progress is advanced, the electric wire and cable industry keeps a higher growth speed, and correspondingly, the electric wire and cable has higher requirements on the performances of the electric wire and cable, and special characteristics of the electric cable are required. The submarine watertight cable needs to be resistant to pressure, seawater corrosion, high voltage and high insulation electrical properties.

At present, the existing submarine watertight cable is provided with a stranded conductor for longitudinally blocking water and a hydrophilic water blocking rope which are stranded into a longitudinal water blocking cable core, and a plurality of layers of water blocking strips are arranged outside the cable core layer by layer, so that the waterproof performance of the submarine watertight cable is improved.

However, when the existing submarine watertight cable is used in a humid environment, water can invade from the end of the electric wire and cable into the cable, and the electric performance of the cable is reduced. In addition, when the electric wire is used on the seabed, the seabed has higher water pressure and certain seawater corrosiveness, and materials such as PVC, cross-linked polyolefin, silica gel and the like can generate the phenomena of insulation and sheath performance reduction due to poor seawater resistance of the materials.

Disclosure of utility model

The utility model aims to provide a submarine watertight cable, which solves the technical problem that in the prior art, when the submarine watertight cable is used in a humid environment, water can invade from the end head of an electric wire cable into the cable, so that the electrical performance of the cable is reduced.

In a first aspect, the utility model provides a submarine watertight cable, which comprises a conductor, an insulating layer, a filling layer, an outer sheath and sealing resin;

the conductor is made of a plurality of metal monofilaments in a stranding mode, the sealing resin is filled between the metal monofilaments, and the insulating layer wraps the metal monofilaments and the outer side of the sealing resin.

Further, the metal monofilament is made of silver-plated copper wires.

Further, the material of the insulating layer is ethylene-tetrafluoroethylene copolymer.

Further, the conductor, the sealing resin and the insulating layer are matched to form an insulating wire core, and a plurality of insulating wire cores are uniformly arranged in the outer sheath.

Further, the filling layer is arranged to be a water-blocking rope, and a plurality of water-blocking ropes are uniformly arranged between the insulating wire cores.

Further, the outer sheath is made of high-temperature-resistant polyether elastomer polyurethane, and the outer sheath is wrapped on the outer sides of all the insulated wire cores.

Compared with the prior art, the submarine watertight cable comprises the conductor, the insulating layer, the filling layer, the outer sheath and sealing resin, wherein the conductor is formed by twisting a plurality of metal monofilaments, the sealing resin is filled between the metal monofilaments, the insulating layer is wrapped outside the metal monofilaments and the sealing resin, gaps between the conductor and the insulating layer are sealed through the sealing resin, so that the conductor can bear larger water pressure and is better in sealing performance, the technical problem that water invades from the end of an electric wire cable to the inside of the cable when the submarine watertight cable is used in a humid environment in the prior art, the electrical performance of the cable is reduced is solved, the water pressure resistance of the submarine watertight cable is improved, and the service life of the submarine watertight cable is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram provided in an embodiment of the present utility model.

Reference numerals:

100. 200 parts of conductors, 200 parts of sealing resin, 300 parts of insulating layers, 400 parts of filling layers and 500 parts of outer jackets.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1, the embodiment of the utility model provides a submarine watertight cable, which comprises a conductor 100, an insulating layer 300, a filling layer 400, an outer sheath 500 and sealing resin 200, wherein the conductor 100 is formed by twisting a plurality of metal monofilaments, the sealing resin 200 is filled between the metal monofilaments, and the insulating layer 300 is wrapped outside the metal monofilaments and the sealing resin 200.

Namely, according to the submarine watertight cable provided by the embodiment of the utility model, the gaps between the conductors 100 and the insulating layer 300 are sealed by the sealing resin 200, so that the conductors 100 can bear larger water pressure and have better sealing property, the technical problem that water can invade from the ends of the electric wires and the cables to the inside of the cables to cause the electrical performance of the cables to be reduced when the submarine watertight cable is used in a humid environment in the prior art is solved, the water pressure resistance of the submarine watertight cable is improved, and the service life of the submarine watertight cable is prolonged.

Specifically, the cable has a circular cross-section, and the conductor 100 is twisted using metal monofilaments. Copper is excellent in electrical conductivity and mechanical properties, and in this embodiment, the conductor 100 is formed by twisting a plurality of copper monofilaments. The sealing resin 200 fills in between the metal monofilaments and encapsulates the conductor 100. Thereby, the conductor 100 can be sufficiently protected from water by the sealing resin 200. Meanwhile, the sealing resin 200 has the function of preventing the oxidation of the conductor 100 and excellent deformation resistance of the conductor 100, and can further prolong the service life of the submarine watertight cable. And the insulating layer 300 and the outer sheath are sequentially sleeved on the outer side of the sealing resin 200, thereby constituting the watertight submarine cable.

Further, the material of the metal monofilament is silver-plated copper wire.

Specifically, in the present embodiment, the conductor 100 is twisted with silver-plated copper wires of 0.1mm, and the corrosion resistance of the copper conductor 100 can be improved by plating silver on the outside of the copper wires.

Further, the material of the insulating layer 300 is provided as an ethylene-tetrafluoroethylene copolymer.

Specifically, the material of the insulating layer 300 is ethylene-tetrafluoroethylene copolymer, and the thickness may be set to 0.1 to 0.5mm, in this embodiment 0.25mm, by extrusion on the surface of the conductor 100. The ethylene-tetrafluoroethylene copolymer has high thermal stability, aging resistance, acid and alkali resistance and flame retardance, and has good dielectric strength and insulation resistance, thus being very suitable for being used as an insulating material.

Further, the conductor 100, the sealing resin 200 and the insulating layer 300 cooperate to form an insulating core, and a plurality of insulating cores are uniformly disposed in the outer sheath 500.

Specifically, in this embodiment, the insulating wire core is provided with five strands, and is disposed in the outer sheath 500 along the circumferential array, so as to ensure the communication quality of the submarine watertight cable and improve the overall tensile property of the submarine communication cable.

Preferably, the filling layer 400 is provided as a water blocking string, and a plurality of water blocking strings are uniformly provided between the insulation cores.

Specifically, the water blocking rope is arranged at the center of the insulating wire core to fill gaps in the insulating wire core, when moisture invades into the cable, the water blocking rope can expand, so that the wires are tightly filled, further invasion of the moisture into the cable is prevented, and the waterproof effect of the submarine watertight cable is improved.

Further, the material of the outer sheath 500 is high temperature resistant polyether elastomer polyurethane, and the outer sheath 500 is wrapped on the outer sides of all the insulated wire cores.

Specifically, the outer sheath 500 is made of a high temperature resistant polyether elastomer polyurethane material by extrusion, and fills up the gaps generated at the periphery of the cable after the cable is formed. And the elastomer polyurethane has stronger pressure resistance, scratch resistance, water pressure resistance, aging resistance, acid and alkali resistance, oil resistance and the like than other materials. The product life is longer.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. A submarine watertight cable, comprising a conductor (100), an insulating layer (300), a filling layer (400) and an outer sheath (500), characterized in that it also comprises a sealing resin (200);

The conductor (100) is made of a plurality of twisted metal monofilaments, the sealing resin (200) is filled between the metal monofilaments, and the insulating layer (300) is wrapped around the metal monofilaments and the outside of the sealing resin (200).

2. The submarine watertight cable according to claim 1, characterized in that the material of the metal monofilament is set to be silver-plated copper wire.

3. The submarine watertight cable according to claim 1, characterized in that the material of the insulating layer (300) is set to ethylene-tetrafluoroethylene copolymer.

4. The submarine watertight cable according to claim 3 is characterized in that the conductor (100), the sealing resin (200) and the insulating layer (300) cooperate to form an insulating core, and multiple strands of the insulating core are evenly arranged in the outer sheath (500).

5. The submarine watertight cable according to claim 4, characterized in that the filling layer (400) is configured as a water-blocking rope, and a plurality of the water-blocking ropes are evenly arranged between the insulating cores.

6. The submarine watertight cable according to claim 4 is characterized in that the material of the outer sheath (500) is set to high-temperature resistant polyether elastomer polyurethane, and the outer sheath (500) is wrapped around the outside of all the insulating cores.