CN212230103U

CN212230103U - Composite insulated long-life wire

Info

Publication number: CN212230103U
Application number: CN202021334805.7U
Authority: CN
Inventors: 张翼翔; 贾煜辉; 李锦�
Original assignee: Shaanxi Kunlan Cable Manufacturing Co ltd
Current assignee: Shaanxi Kunlan Cable Manufacturing Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-12-25
Anticipated expiration: 2030-07-09

Abstract

The utility model provides a compound insulating long-life electric wire, it includes: the composite conductor comprises a composite conductor wire core, an inner insulating layer, a middle protective layer and an outer protective layer; the composite conductor sinle silk has a plurality of wires transposition to form, the internal insulation layer cladding in on the composite conductor sinle silk, the internal insulation layer includes: first internal insulation layer and second internal insulation layer, first internal insulation layer and second internal insulation layer's material is different, and the two co-extrusion shaping, middle inoxidizing coating centers on the outside setting of internal insulation layer, just middle inoxidizing coating has a plurality of protruding stupefied, the outer protective layer cladding in on the middle inoxidizing coating. The utility model discloses an insulating part of compound insulation long-life electric wire is two-layer composite construction, by the inlayer that insulating properties is excellent and with play the outer insulating complex of strengthening the insulating effect to the inlayer insulation of the inside and form. The structure improves the mechanical strength, the wear resistance and the insulation performance through the composite structure while not increasing the overall dimension of the product.

Description

Composite insulated long-life wire

Technical Field

The utility model relates to an insulated wire technical field especially relates to a compound insulation long-life electric wire.

Background

The periphery of the lead is uniformly and hermetically wrapped with a layer of non-conductive material, such as: resin, plastic, silicon rubber, PVC and the like to form an insulating layer, thereby preventing the electric conductor from contacting with the outside to cause accidents such as electric leakage, short circuit, electric shock and the like. Currently, such products employ a single layer of insulation to encase the inner conductor portion. However, the single-layer insulated wire has a limited insulation effect and cannot meet the long-term use requirement. Therefore, it is necessary to provide a further solution to the above-mentioned difficult problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound insulation long-life electric wire to overcome the not enough that exists among the prior art.

In order to realize the above utility model purpose, the utility model provides a compound insulation long-life electric wire, it includes: the composite conductor comprises a composite conductor wire core, an inner insulating layer, a middle protective layer and an outer protective layer;

the composite conductor sinle silk has a plurality of wires transposition to form, the internal insulation layer cladding in on the composite conductor sinle silk, the internal insulation layer includes: first internal insulation layer and second internal insulation layer, first internal insulation layer and second internal insulation layer's material is different, and the two co-extrusion shaping, middle inoxidizing coating centers on the outside setting of internal insulation layer, just middle inoxidizing coating has a plurality of protruding stupefied, the outer protective layer cladding in on the middle inoxidizing coating.

As an improvement of the composite insulated long-life electric wire of the present invention, the plurality of wires are twisted around a flexible core rod.

As the utility model discloses an improvement of compound insulating long-life electric wire, two in a plurality of wires are a set of, and each group's wire centers on the plug transposition sets up.

As an improvement of the composite insulated long-life electric wire of the utility model, the first inner insulating layer is made of flexible low-smoke halogen-free polyolefin; the second inner insulating layer is made of flame-retardant cross-linked low-smoke halogen-free polyolefin.

As the utility model discloses an improvement of compound insulating long-life electric wire, the surface that contacts fuses each other between first inner insulating layer and the second inner insulating layer.

As the utility model discloses an improvement of compound insulating long-life electric wire, middle inoxidizing coating is a hollow prism, middle inoxidizing coating with the position that the internal insulation layer contacted keeps tangent.

As the utility model discloses an improvement of compound insulation long-life electric wire, arbitrary protruding stupefied of middle inoxidizing coating with still be provided with the rib between the internal insulation layer.

As the improvement of the composite insulated long-life electric wire of the utility model, the outer protective layer is a glass fiber layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an insulating part of compound insulation long-life electric wire is two-layer composite construction, by the inlayer that insulating properties is excellent and with play the outer insulating complex of strengthening the insulating effect to the inlayer insulation of the inside and form. The structure improves the mechanical strength, the wear resistance and the insulation performance through the composite structure while not increasing the overall dimension of the product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic radial cross-sectional view of an embodiment of the composite insulated long-life electric wire of the present invention.

Detailed Description

The present invention is described in detail below with reference to various embodiments, but it should be noted that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make equivalent changes or substitutions in functions, methods, or structures according to the embodiments without departing from the scope of the present invention.

The utility model provides a compound insulating long-life electric wire, it includes: the composite conductor comprises a composite conductor wire core, an inner insulating layer, a middle protective layer and an outer protective layer;

The following describes in detail the solution of the flushing device in connection with an embodiment of the flushing device according to the invention in connection with the application to a visual air flow indicator.

As shown in fig. 1, an embodiment of the present invention provides a composite insulated long-life electric wire, which includes: the composite conductor comprises a composite conductor wire core 1, an inner insulating layer 2, a middle protective layer 3 and an outer protective layer 4.

The composite conductor core 1 is formed by twisting a plurality of conducting wires 11, and in order to facilitate twisting of the conducting wires 11, the conducting wires 11 are twisted around a flexible core rod 12. In one embodiment, two of the plurality of wires 11 are grouped, and each group of wires 11 is stranded around the mandrel 12.

In order to improve the insulating property of the wire and prolong the service life of the wire. The insulating part of this embodiment is two-layer composite construction, by the inlayer that insulating properties is excellent and with the outer insulating complex that plays the insulating effect of enhancement to the inlayer insulation of inside.

Specifically, the inner insulating layer 2 is coated on the composite conductor core 1, and the inner insulating layer 2 includes: the insulation structure comprises a first inner insulation layer 21 and a second inner insulation layer 22, wherein the first inner insulation layer 21 and the second inner insulation layer 22 are made of different materials and are formed by co-extrusion. Compared with twice extrusion, the two materials have obvious interfaces, and the insulating property is greatly reduced. During co-extrusion molding, the surfaces of the first inner insulating layer 21 and the second inner insulating layer 22 which are in contact are fused with each other. In one embodiment, the first inner insulating layer 21 is made of flexible low-smoke halogen-free polyolefin; the second inner insulating layer 22 is made of flame-retardant cross-linked low-smoke halogen-free polyolefin.

Middle inoxidizing coating 3 is used for playing the effect of protection and enhancement, middle inoxidizing coating 3 centers on the outside setting of internal insulation 2, just middle inoxidizing coating 3 has a plurality of protruding stupefied. In one embodiment, the intermediate protective layer 3 is a hollow prism, and the position where the intermediate protective layer 3 contacts the inner insulating layer 2 is tangential. At this time, a rib 5 is further arranged between any protruding edge of the middle protective layer 3 and the inner insulating layer 2.

The outer protection layer 4 is coated on the middle protection layer 3 to integrally protect the composite conductor wire core 1, the inner insulation layer 2 and the middle protection layer 3. In one embodiment, the outer protective layer 4 is a fiberglass layer.

To sum up, the utility model discloses an insulating part of compound insulation long-life electric wire is two-layer composite construction, by the inlayer that insulating properties is excellent and with play the outer insulating complex of strengthening the insulating effect to the inlayer insulation of the inside and form. The structure improves the mechanical strength, the wear resistance and the insulation performance through the composite structure while not increasing the overall dimension of the product.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A composite insulated long life electrical wire, comprising: the composite conductor comprises a composite conductor wire core, an inner insulating layer, a middle protective layer and an outer protective layer;

2. The composite insulated long life electrical wire of claim 1 wherein said plurality of conductors are stranded around a flexible core rod.

3. The composite insulated long life electrical wire of claim 2 wherein two of said plurality of conductors are in a group, each group being stranded about said mandrel.

4. The composite insulated long-life wire of claim 1, wherein the material of the first inner insulating layer is flexible low smoke zero halogen polyolefin; the second inner insulating layer is made of flame-retardant cross-linked low-smoke halogen-free polyolefin.

5. The composite insulated long life electrical wire of claim 1 or 4, wherein the surfaces of contact between said first and second inner insulating layers are fused to each other.

6. The composite insulated long life electrical wire of claim 1 wherein said intermediate protective layer is a hollow prism, said intermediate protective layer being tangential to the location where said inner insulating layer contacts.

7. The composite insulated long-life electric wire of claim 6, wherein a rib is further arranged between any protruding edge of the middle protective layer and the inner insulating layer.

8. The composite insulated long life electrical wire of claim 1 wherein said outer protective layer is a fiberglass layer.