CN218826267U

CN218826267U - Withstand voltage prevents power cable under water that soaks

Info

Publication number: CN218826267U
Application number: CN202223304184.XU
Authority: CN
Inventors: 周寿清; 韦佳; 王容; 李程; 孙圣杰
Original assignee: JIANGSU RUNHUA CABLE SHAREHOLDING CO Ltd
Current assignee: JIANGSU RUNHUA CABLE SHAREHOLDING CO Ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-04-07
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to a power cable technical field especially relates to a withstand voltage prevents power cable under water that soaks, including oversheath, inner sheath, conductor, outside compressive structures and inside compressive structures, be equipped with inside compressive structures and silica gel between oversheath and the inner sheath and fill, the inner wall of inner sheath is equipped with armor and band layer in proper order, establishes a plurality of conductors in the band layer, is equipped with the second between band layer and the conductor and fills, and the conductor outside is equipped with conductor shield, first packing and insulation shield in proper order, and the outer wall of oversheath is equipped with outside compressive structures. The utility model discloses in, the foaming of EVA material is filled within lamella form cavity, combines silica gel between oversheath and the inner sheath to fill and inside withstand voltage structure, wherein one-to-one between the first arc resistance to pressure layer and the second arc resistance to pressure layer of inside withstand voltage structure and supports the pressure contact, outside resistance to pressure structure and inside resistance to pressure structure mutually support and use the improvement that can step forward this underwater cable withstand voltage and prevent the effect that soaks.

Description

Withstand voltage prevents power cable under water that soaks

Technical Field

The utility model relates to a power cable technical field especially relates to a withstand voltage prevents power cable under water that soaks.

Background

The underwater power cable is a wire wrapped by an insulating material, is laid under the sea and rivers and is used for telecommunication transmission, and the existing underwater power cable has the problem of poor pressure resistance, so that the power cable is bent or even damaged under the influence of water flow or water pressure, and the service life of the cable is shortened;

the above information disclosed in this background section is only for background understanding of the inventive concept and, therefore, it may contain information that does not constitute prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a withstand voltage prevents power cable under water that soaks to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pressure-resistant and water-immersion-resistant underwater power cable comprises an outer sheath, an inner sheath, a conductor, an external pressure-resistant structure and an internal pressure-resistant structure, wherein the internal pressure-resistant structure is arranged between the outer sheath and the inner sheath, and silica gel is filled between the outer sheath and the inner sheath;

the inner wall of the inner sheath is provided with an armor layer, and the inner wall of the armor layer is coated with a belting layer;

a plurality of conductors are equidistantly arranged in the belting layer by taking the center of the armor layer as a circle center, and second filling is arranged between the belting layer and the conductors;

the outer part of the conductor is coated with a conductor shield, the outer side of the conductor shield is provided with first filling, and the outer part of the first filling is coated with an insulation shield;

an external pressure-resistant structure is arranged on the outer wall of the outer sheath and comprises a plurality of petal-shaped cavities, and foaming filling is arranged in the petal-shaped cavities;

in addition, the preferred structure is that the petal-shaped cavities are arranged with the center of the sheath as the center of a circle at equal intervals, and the foaming filling is EVA material.

In addition, the preferred structure is that, inside withstand voltage structure includes first arc withstand voltage layer and second arc withstand voltage layer, and wherein the center of sheath outside first arc withstand voltage layer sets up in the inner wall of oversheath as centre of a circle equidistance, and the center of sheath is set up in the outer wall of inner sheath as centre of a circle equidistance inside second arc withstand voltage layer to one-to-one relatively supports the pressure contact between first arc withstand voltage layer and the second arc withstand voltage layer.

In addition, the first arc-shaped pressure-resistant layer and the second arc-shaped pressure-resistant layer are preferably made of polyhexamethylene adipamide.

The utility model has the advantages that:

the utility model discloses in, through this outside compressive structure that outer wall of outer sheath of power cable sets up including lamella form cavity and foaming packing under water, wherein the foaming of EVA material is filled and is set up within lamella form cavity, and combine silica gel packing that sets up between oversheath and the inner sheath and the inside withstand voltage structure including first arc resistance to pressure layer and second arc resistance to pressure layer, wherein relative and support the pressure contact between first arc resistance to pressure layer and the second arc resistance to pressure layer one by one, outside compressive structure and inside withstand voltage structure mutually support use can be further this the withstand voltage of improvement cable under water and prevent the effect of soaking.

Drawings

Fig. 1 is a schematic structural view of a pressure-resistant and immersion-resistant underwater power cable provided by the present invention;

fig. 2 is the enlarged view of a in fig. 1 of the pressure-resistant and water immersion-resistant underwater power cable provided by the utility model.

In the figure: 101 outer sheath, 102 inner sheath, 2 external pressure-resistant structure, 21 petal-shaped cavity, 22 foaming filling, 3 silica gel filling, 4 internal pressure-resistant structure, 41 first arc pressure-resistant layer, 42 second arc pressure-resistant layer, 5 armor layer, 6 belting layer, 7 conductor, 81 conductor shield, 82 insulation shield, 91 first filling and 92 second filling.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-2, a pressure-resistant and immersion-resistant underwater power cable comprises an outer sheath 101, an inner sheath 102, a conductor 7, an external pressure-resistant structure 2 and an internal pressure-resistant structure 4, wherein the internal pressure-resistant structure 4 is arranged between the outer sheath 101 and the inner sheath 102, and silica gel filling 3 is arranged between the outer sheath 101 and the inner sheath 102;

through the design, the silica gel filling 3 is arranged between the outer sheath 101 and the inner sheath 102 to achieve the good purpose of preventing water immersion, wherein the silica gel filling 3 has good flexibility, is not easy to deform, has good electrical insulation and is long in service life;

the inner wall of the inner sheath 102 is provided with an armor layer 5, the inner wall of the armor layer 5 is wrapped with a belting layer 6, a plurality of conductors 7 are equidistantly arranged in the belting layer 6 by taking the center of the armor layer 5 as a circle center, a second filler 92 is arranged between the belting layer 6 and the conductors 7, the outer part of each conductor 7 is wrapped with a conductor shield 81, the outer side of each conductor shield 81 is provided with a first filler 91, and the outer part of each first filler 91 is wrapped with an insulation shield 82;

the outer wall of oversheath 101 is provided with outside resistance to compression structure 2, and outside resistance to compression structure 2 includes a plurality of lamella form cavity 21 to be provided with the foaming in the lamella form cavity 21 and fill 22.

In other embodiments, the petal-shaped cavities 21 are arranged at equal intervals around the center of the sheath 101, wherein the foam filling 22 is an EVA material;

through the design, the petal-shaped cavities 21 with the foaming fillers 22 arranged inside are equidistantly arranged outside the outer sheath 101, wherein the foaming fillers 22 made of the EVA material have good water resistance and corrosion resistance, and the EVA material also has good elasticity and toughness, so that the underwater power cable can be effectively subjected to the purposes of external water resistance and external pressure resistance;

further, the internal pressure-resistant structure 4 includes a first arc-shaped pressure-resistant layer 41 and a second arc-shaped pressure-resistant layer 42, wherein the first arc-shaped pressure-resistant layer 41 is equidistantly arranged on the inner wall of the outer sheath 101 with the center of the outer sheath 101 as a circle center, the second arc-shaped pressure-resistant layer 42 is equidistantly arranged on the outer wall of the inner sheath 102 with the center of the inner sheath 102 as a circle center, the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 are in one-to-one relative abutting contact, and the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 are made of polyhexamethylene adipamide;

through the design, firstly, the internal pressure-resistant structure 4 comprising the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 is arranged between the outer sheath 101 and the inner sheath 102, wherein the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 are in one-to-one opposite abutting contact, and when the power cable is subjected to external pressure, the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 which are in abutting contact can buffer the power cable and reduce deformation;

furthermore, the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 are made of polyhexamethylene adipamide;

through the design, the first arc-shaped pressure-resistant layer 41 and the second arc-shaped pressure-resistant layer 42 made of the polyhexamethylene adipamide material have good tensile strength and wear resistance, and also have good electrical insulation, so that the safety performance of the underwater power cable can be further improved;

in this embodiment, set up the outside compressive structure including lamella form cavity and foaming packing through the oversheath outer wall at this power cable under water, wherein the foaming packing of EVA material sets up within lamella form cavity, and combine silica gel packing that sets up between oversheath and the inner sheath and the inside compressive structure including first arc withstand voltage layer and second arc withstand voltage layer, wherein relative and the support pressure contact of one-to-one between first arc withstand voltage layer and the second arc withstand voltage layer, outside compressive structure and inside compressive structure mutually support use can further improvement this cable under water withstand voltage and prevent the effect of soaking.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a withstand voltage prevents underwater power cable that soaks, includes oversheath (101), inner sheath (102), conductor (7), outside compressive structures (2) and inside compressive structures (4), its characterized in that, be provided with inside compressive structures (4) between oversheath (101) and inner sheath (102) to be provided with silica gel packing (3) between oversheath (101) and inner sheath (102), the inner wall of inner sheath (102) is provided with armor (5), and the inner wall cladding of armor (5) has belting layer (6), use the center of armor (5) to be provided with a plurality of conductor (7) as centre of a circle equidistance in belting layer (6) to be provided with second packing (92) between belting layer (6) and conductor (7), the outside cladding of conductor (7) has conductor shield (81), and the outside of conductor shield (81) is provided with first packing (91), and the outside cladding of first packing (91) has insulation shield (82), the outer wall of outside compressive structures (101) is provided with outside compressive structures (2), and outside compressive structures (2) include a plurality of compressive structures (21) and be provided with outer sheath lamella form cavity (21) in the foaming cavity (21).

2. The pressure-resistant and water immersion-resistant underwater power cable as claimed in claim 1, wherein said lobed cavities (21) are arranged equidistantly around the center of the outer sheath (101), and wherein the foamed filler (22) is EVA material.

3. The pressure-resistant and water-immersion-resistant underwater power cable as claimed in claim 1, wherein the internal pressure-resistant structure (4) comprises a first arc-shaped pressure-resistant layer (41) and a second arc-shaped pressure-resistant layer (42), wherein the first arc-shaped pressure-resistant layer (41) is equidistantly arranged on the inner wall of the outer sheath (101) with the center of the outer sheath (101) as a circle center, the second arc-shaped pressure-resistant layer (42) is equidistantly arranged on the outer wall of the inner sheath (102) with the center of the inner sheath (102) as a circle center, and the first arc-shaped pressure-resistant layer (41) and the second arc-shaped pressure-resistant layer (42) are in one-to-one relative abutting contact.

4. A pressure and immersion resistant underwater power cable as claimed in claim 3, characterized in that said first and second arc-shaped pressure resistant layers (41, 42) are of polyhexamethylene adipamide material.