CN209103846U - A kind of bottom compression-resistant durable type power cable - Google Patents

Abstract

The utility model discloses a kind of water-bed compression-resistant durable type power cables, and ecto-entad successively includes restrictive coating, two polyethylene backing plates, several plastic lock catch and four main cores；The internal cavities section of the restrictive coating package is in oval shape, and four main core side-by-side horizontals are mounted in the internal cavities that restrictive coating surrounds.Its main feature is that itself having good antitorque strength effect, it is not easy that rotation occurs in process of deployment, it is most suitable for for water-bed laying, flat structure has smaller pressure, it is opposite to be not easy to fall into water-bed sposh, and the cable of flat structure is placed on the bottom, it is not easy to be influenced by water-bed undercurrent.

Description

A kind of bottom compression-resistant durable type power cable

Technical field

The utility model relates to power cable technical field more particularly to a kind of water-bed compression-resistant durable type power cables

Background technique

Power cable is the cable for being used for transmission and distributing electric energy, is usually used in the lead-out wire of Urban Underground power grid, power station The submarine transmission line on road, the in-line power of industrial and mining enterprises and crossing river and sea.In power circuit, specific gravity shared by cable just by It is cumulative to add.Cable has the following characteristics that the structure of cable is more complicated than overhead line, it is removed compared with overhead line There is cable core (conductor) outside, there are also the insulating layer that can bear network voltage and claddings on the insulating layer, exempts from insulating materials By moisture attack and mechanical failure, the protective layer to keep insulation performance for a long time.The slightly higher cable of voltage class, outside conductor Outside insulating layer, cable laying does not take up an area space of planes in underground, and same underpass can accommodate multi circuit transmission lines.

Lake and river are inevitably encountered in the paving track of cable, cable is forced to pass through from the bottom, water-bed undercurrent, hydraulic pressure And underwater mud creates great difficulties the laying of cable and cable, the water-bed continuous removal cable of undercurrent cause on cable exist compared with Big torsion strength can not discharge, and hydraulic pressure and underwater mud greatly limit cable and be placed in the bottom.

The utility model master is to solve submarine cable and is laid with difficult and permanent seal cooling deficiency problem.

Utility model content

It is main to solve in view of the shortcomings of the prior art, the utility model provides a kind of water-bed compression-resistant durable type power cable Certainly be that submarine cable is laid with difficult and permanent seal cooling deficiency problem.

The utility model is realized by following technological means solves above-mentioned technical problem:

A kind of bottom compression-resistant durable type power cable, ecto-entad successively includes restrictive coating, two polyethylene backing plates, several A plastic lock catch and four main cores；The internal cavities section of the restrictive coating package is in oval shape, and four main cores simultaneously drain In the internal cavities that safety is surrounded mounted in restrictive coating, the plastic lock catch is socketed in the outside of four main cores and by four main core set It is connected together, several described plastic lock catch are evenly distributed along the axial direction of cable, the upper side and lower side of the plastic lock catch and shield The polyethylene backing plate is respectively arranged between jacket layer inner wall, the polyethylene backing plate successively extends along the axial direction of cable, and two The polyethylene backing plate is symmetrical arranged above and below.

Preferably, it is uniformly arranged in the polyethylene backing plate there are four hole slot, is respectively mounted flexible steel in the hole slot Silk is opposite between the steel wire and corresponding hole slot to be slidably matched.

Preferably, the main core ecto-entad includes insulating layer I, shielded layer and four conducting wires, the surface of the conducting wire It is enclosed with insulating layer II.

Utility model has the advantages that its main feature is that itself having good antitorque strength effect, it is not easy to be laid with Rotation occurs in journey, is most suitable for for water-bed laying, flat structure has smaller pressure, opposite to be not easy to fall into the bottom Sposh in, and the cable of flat structure is placed on the bottom, it is not easy to influenced by water-bed undercurrent, arbitrarily moved, The polyethylene backing plate being arranged in cable makes cable when horizontal curvature, needs bigger resistance, and in polyethylene backing plate The setting of steel wire then guarantees there is better toughness when cable is bent in the vertical direction.

Detailed description of the invention

Fig. 1: the radial cross section of the utility model.

Fig. 2: the axial section partial schematic diagram of the utility model.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Up, down, left, right, before and after herein, show standard with Fig. 1.

Embodiment:

As shown in Figure 1 and Figure 2: a kind of bottom compression-resistant durable type power cable, ecto-entad successively includes restrictive coating 1, two Polyethylene backing plate 2, several plastic lock catch 3 and four main cores 4；The internal cavities section that the restrictive coating 1 wraps up is in oval shape, Four 4 side-by-side horizontals of main core are mounted in the internal cavities that restrictive coating 1 surrounds, and the plastic lock catch 3 is socketed in four masters The outside of core 4 simultaneously connects together four main cores 4, several described plastic lock catch 3 are evenly distributed along the axial direction of cable, described The polyethylene backing plate 2, the polyethylene pads are respectively arranged between 1 inner wall of the upper side and lower side and restrictive coating of plastic lock catch 3 Plate 2 successively extends along the axial direction of cable, and two polyethylene backing plates 2 are symmetrical arranged above and below.

It is uniformly arranged in the polyethylene backing plate 2 there are four hole slot 21, is respectively mounted flexible steel wire in the hole slot 21 22, it is opposite between the steel wire 22 and corresponding hole slot 21 to be slidably matched.

4 ecto-entad of main core includes insulating layer I 41, shielded layer 42 and four conducting wires 43, the table of the conducting wire 43 Face is enclosed with insulating layer II 44.

The cable of the utility model is mainly in flat, its main feature is that itself having good antitorque strength effect, it is not easy to Rotation occurs in process of deployment, is most suitable for for water-bed laying, flat structure has smaller pressure, opposite to be not easy It falls into water-bed sposh, and the cable of flat structure is placed on the bottom, it is not easy to be influenced by water-bed undercurrent, arbitrarily occur Mobile, the polyethylene backing plate 2 being arranged in the cable makes cable when horizontal curvature, needs bigger resistance, and poly- second The setting of steel wire 22 then guarantees there is better toughness when cable is bent in the vertical direction in alkene backing plate 2.

It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.

Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (3)

1. a kind of bottom compression-resistant durable type power cable, it is characterised in that: ecto-entad successively includes restrictive coating, two polyethylene Backing plate, several plastic lock catch and four main cores；The internal cavities section of the restrictive coating package is in oval shape, four masters Core side-by-side horizontal is mounted in the internal cavities that restrictive coating surrounds, and the plastic lock catch is socketed in the outside of four main cores and by four A main core connects together, several described plastic lock catch are evenly distributed along the axial direction of cable, the upside of the plastic lock catch and The polyethylene backing plate is respectively arranged between downside and restrictive coating inner wall, the polyethylene backing plate successively prolongs along the axial direction of cable It stretches, two polyethylene backing plates are symmetrical arranged above and below.

2. a kind of water-bed compression-resistant durable type power cable according to claim 1, it is characterised in that: in the polyethylene backing plate It is uniformly arranged there are four hole slot, is respectively mounted flexible steel wire in the hole slot, it is opposite between the steel wire and corresponding hole slot It is slidably matched.

3. a kind of water-bed compression-resistant durable type power cable according to claim 1, it is characterised in that: the main core ecto-entad It include that insulating layer I, shielded layer and four conducting wires, the surface of the conducting wire are enclosed with insulating layer II.