CN212411607U

CN212411607U - Tensile shielding type stranded wire

Info

Publication number: CN212411607U
Application number: CN202021644839.6U
Authority: CN
Inventors: 全伟
Original assignee: SHANGHAI SHUNCHAO INDUSTRY CO LTD
Current assignee: SHANGHAI SHUNCHAO INDUSTRY CO LTD
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-01-26
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a tensile shielding type stranded conductor, it includes: an inner conductor portion composed of a round copper wire; and an insulating layer disposed outside the inner conductor portion; the insulating layer includes: a first insulating layer disposed outside the inner conductor portion and made of a soluble polytetrafluoroethylene material; a second insulating layer disposed outside the first insulating layer, the second insulating layer being composed of EPR rubber; a shielding layer disposed outside the second insulating layer; set up in the outside PVC restrictive coating of shielding layer, its annular array has arranged a plurality of semi-circular archs, and semi-circular arch is the flexible body, and this semi-circular protruding inside is provided with the steel wire. The product has good tensile effect and shielding effect.

Description

Tensile shielding type stranded wire

Technical Field

The utility model relates to a tensile shielding type stranded conductor.

Background

The stranded wire usually has the problem that load intensity is less in the use, and holistic shielding effect is not fully satisfactory yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tensile shielding type stranded conductor, it has better load strength and shielding effect.

In order to solve the above technical problem, an embodiment of the utility model provides a tensile shielding type stranded conductor, it includes: an inner conductor portion composed of a round copper wire; and an insulating layer disposed outside the inner conductor portion; the insulating layer includes:

a first insulating layer disposed outside the inner conductor portion and made of a soluble polytetrafluoroethylene material;

a second insulating layer disposed outside the first insulating layer, the second insulating layer being composed of EPR rubber;

a shielding layer disposed outside the second insulating layer;

set up in the outside PVC restrictive coating of shielding layer, its annular array has arranged a plurality of semi-circular archs, and semi-circular arch is the flexible body, and this semi-circular protruding inside is provided with the steel wire.

Furthermore, the shielding layer is formed by weaving copper wires or an aluminum-plastic composite belt.

Further, the section of the steel wire is T-shaped.

Further, the PVC sheath layer is provided with a staggered sandwich structure, and the sandwich layer is provided with a first liquid medium containing fluorescent powder.

Further, PVC restrictive coating outside is provided with the silica gel layer that discolours, and this silica gel layer that discolours is provided with a plurality of hole structures, and silica gel layer outside that discolours is provided with the transparent material layer.

The utility model discloses following beneficial effect has: the product has good tensile effect and shielding effect.

Drawings

Fig. 1 is a cross-sectional view of a tensile shielding type stranded wire in a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of a tensile shielding type stranded wire in a second embodiment of the present invention.

Fig. 3 is an enlarged view of fig. 2 at I.

Fig. 4 is a cross-sectional view of a tensile shielding type stranded wire in a third embodiment of the present invention.

Fig. 5 is a cross-sectional view of a tensile shielding type stranded wire in a fourth embodiment of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

The first embodiment of the utility model provides a tensile shielding type stranded conductor, see fig. 1, it includes: an inner conductor portion constituted by a round copper wire 1 and an insulating layer 2 provided outside the inner conductor portion; the insulating layer includes: a first insulating layer 2a disposed outside the inner conductor portion and composed of a soluble polytetrafluoroethylene material; a second insulating layer 2b, which is formed of EPR rubber, provided outside the first insulating layer; a shield layer 2c disposed outside the second insulating layer; the PVC sheath layer 2d is arranged outside the shielding layer, a plurality of semicircular bulges 2d-1 are arranged in an annular array mode, the semicircular bulges are flexible bodies, and steel wires 2d-2 are arranged inside the semicircular bulges.

Alternatively, the shielding layer is woven by copper wires or an aluminum-plastic composite belt.

The second embodiment of the present invention provides a tensile shielding stranded wire, which is different from the first embodiment in that, referring to fig. 2, the cross section of the steel wire is T-shaped.

As can be seen in figure 3, the cross section of the steel wire is T-shaped, so that the stability of the steel wire in the semicircular bulge is improved, the strength of the semicircular bulge can be improved by utilizing the unfolded cross section of the T-shaped steel wire, and the semicircular bulge is prevented from being greatly deformed due to local extrusion.

The third embodiment of the utility model provides a tensile shielding stranded wire, which is different from the first embodiment in that, referring to fig. 4, a PVC sheath layer is provided with a staggered sandwich structure 2d-3, the sandwich layer is provided with a first liquid medium containing fluorescent powder, the staggered sandwich structure here comprises a first non-continuous sandwich 2d-30 and a second non-continuous sandwich 2d-31 arranged outside the first non-continuous sandwich, here the first non-continuous interlayer 2d-30 comprises 11 inner arcuate interlayer segments, the second non-continuous interlayer 2d-31 comprises 11 outer arcuate interlayer segments, liquid water containing fluorescent powder is filled in the inner arc interlayer section and the outer respiration interlayer section, when the sheath layer is pulled or punctured by a sharp instrument, fluorescent traces can be emitted by using flashlight irradiation in a dark environment, so that the twisted wire outer protection layer structure can be prevented from being damaged and can continuously work.

The utility model discloses a fourth embodiment provides a tensile shielding type stranded conductor, its difference with the third embodiment lies in, see fig. 5, PVC restrictive coating outside is provided with color changing silica gel layer 3, this color changing silica gel layer is provided with a plurality of hole structures, because the intermediate layer liquid water that leads to PVC restrictive coating inside is oozed outward and is contacted color changing silica gel layer because tractive or sharp ware destroy, then because color changing silica gel layer rainwater then can appear changing this moment, so then can indicate operating personnel stranded conductor inner structure appearance heterology, need in time change, color changing silica gel layer outside is provided with transparent material layer 4, can utilize transparent material layer protection color changing silica gel not touched and discolour by outside liquid water like this, and can also utilize transparent material layer to make things convenient for operating personnel to observe the operation.

The semicircular bulges 2d-1 can be arranged on the transparent material layer, and the semicircular bulges 2d-1 can also be connected with the PVC sheath layer into a whole after penetrating through the allochroic silica gel layer and the transparent material layer, wherein the transparent material layer is made of materials including but not limited to low-density high-pressure polyethylene, and the transparent polyethylene structure layer can be coated outside the allochroic silica gel.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. Tensile shielded stranded wire, it includes:

an inner conductor portion composed of a round copper wire; and the number of the first and second groups,

an insulating layer disposed outside the inner conductor portion;

characterized in that the insulating layer comprises:

a shielding layer disposed outside the second insulating layer;

set up in the outside PVC restrictive coating of shielding layer, its annular array has arranged a plurality of semi-circular archs, semi-circular arch is the flexible body, and this semi-circular protruding inside is provided with the steel wire.

2. The tensile shielding stranded wire of claim 1, wherein the shielding layer is formed by weaving copper wires or an aluminum-plastic composite tape.

3. The tensile shielded strand of claim 1, wherein the cross-section of the steel wire is T-shaped.

4. The tensile shielding stranded wire of claim 1, wherein the PVC sheath layer is provided with a staggered sandwich structure, and the sandwich structure is provided with a first liquid medium containing fluorescent powder.

5. The tensile shielding type stranded wire according to claim 4, wherein a allochroic silica gel layer is arranged outside the PVC sheath layer, the allochroic silica gel layer is provided with a plurality of hole structures, and a transparent material layer is arranged outside the allochroic silica gel layer.