CN211957144U

CN211957144U - High-temperature cable

Info

Publication number: CN211957144U
Application number: CN202021029041.0U
Authority: CN
Inventors: 康晓风; 哲琴
Original assignee: Haiyan Edson Special Cable Co ltd
Current assignee: Haiyan Edson Special Cable Co ltd
Priority date: 2020-06-06
Filing date: 2020-06-06
Publication date: 2020-11-17
Anticipated expiration: 2030-06-06

Abstract

The utility model discloses a high-temperature cable, which comprises a conducting wire, a transparent FEP insulating layer and a color FEP insulating layer from inside to outside in sequence; the thickness of the transparent FEP insulating layer is not less than 0.5 mm; the lead is formed by twisting a plurality of copper wires. The utility model relates to a high temperature cable adopts the setting of transparent FEP insulating layer and colour FEP insulating layer, and transparent FEP insulating layer can provide good resistance to puncture performance, and colour FEP insulating layer can provide the colour so that connect for the cable. The high-temperature cable has good breakdown resistance and good identifiability on the premise of small thickness.

Description

High-temperature cable

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a high temperature cable.

Background

The applications of the electric wire and the electric cable are mainly divided into three main categories, namely an electric power system, an information transmission system, mechanical equipment and an instrument system. The electric wire and cable products adopted by the electric power system mainly comprise overhead bare wires, bus bars (buses), electric power cables, rubber sleeve cables, overhead insulated cables, branch cables (replacing part of buses), electromagnetic wires, electric equipment wires and cables for electric power equipment and the like. The electric wire and cable used for the information transmission system mainly include a local telephone cable, a television cable, an electronic cable, a radio frequency cable, an optical fiber cable, a data cable, an electromagnetic wire, an electric power communication or other composite cables and the like. Almost all other products except an overhead bare wire in mechanical equipment and instrument and meter systems are applied, but mainly comprise a power cable, an electromagnetic wire, a data cable, an instrument and meter cable and the like.

The electric wire and cable products are mainly divided into five major categories, namely bare wires and bare conductor products, electric power cables, electric wire and cables for electrical equipment, communication cables, optical fibers and electromagnetic wires. The power cable is mainly characterized in that the conductor is externally extruded (wound) with an insulating layer, such as an overhead insulated cable, or several-core twisted (corresponding to a phase line, a zero line and a ground wire of a power system), such as an overhead insulated cable with more than two cores, or a sheath layer is added, such as a plastic/rubber-sheathed wire cable.

However, in some industries, the requirement for the high temperature resistance of the electric wire and cable is higher and higher, especially for the high-voltage resistant service environment, such as 15KV, the cable is required to have the high temperature resistance and also to be unable to break down in the high-voltage service environment, and the diameter of the cable is also required. When the insulation layer of the cable is required to have color, the insulation layer with a thicker thickness is required not to be broken down. Since color concentrates are required to be added to the insulating layer to have different colors when producing the insulating layer having colors, the addition of the color concentrates causes the breakdown resistance of the insulating layer to be lowered. How to solve the problem that the outer layer of the cable has color and can also use smaller thickness to prevent the cable from being punctured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high temperature cable is making the insulating layer have less thickness, can satisfy simultaneously have the colour and can not be punctured the performance requirement.

In order to solve the technical problem, the purpose of the utility model is to realize like this:

the utility model relates to a high-temperature cable, which comprises a conducting wire, a transparent FEP insulating layer and a color FEP insulating layer from inside to outside in sequence; the thickness of the transparent FEP insulating layer is not less than 0.5 mm; the lead is formed by twisting a plurality of copper wires.

On the basis of the above scheme and as a preferable scheme of the scheme: the lead consists of 7 copper wires, and the diameter of each copper wire is 0.25 mm.

On the basis of the above scheme and as a preferable scheme of the scheme: the wire consists of 19 copper wires.

On the basis of the above scheme and as a preferable scheme of the scheme: the thickness of the color FEP insulating layer 3 is 0.05 mm.

On the basis of the above scheme and as a preferable scheme of the scheme: the Kevlar composite wire is characterized in that a Kevlar filament is arranged at the central position of the wire 1, and the fineness of the Kevlar filament is 200D, 400D or 600D.

The utility model has the advantages that: the utility model relates to a high temperature cable adopts the setting of transparent FEP insulating layer and colour FEP insulating layer, and transparent FEP insulating layer can provide good resistance to puncture performance, and colour FEP insulating layer can provide the colour so that connect for the cable. The high-temperature cable has good breakdown resistance and good identifiability on the premise of small thickness.

Drawings

FIG. 1 is a schematic cross-sectional view of a high temperature cable according to an embodiment;

fig. 2 is a schematic cross-sectional view of a high-temperature cable according to a second embodiment.

The designations in the figures illustrate the following: 1-a wire; 2-transparent FEP insulation layer; 3-color FEP insulation layer; 4-kevlar filaments.

Detailed Description

The present embodiment will now be described in detail with reference to the drawings attached to the specification hereinafter. In the drawings, embodiments of the invention are shown, however, the invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein.

Unless otherwise defined, terms (including technical and scientific terms) used herein should be understood to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Moreover, it will be understood that terms used herein are to be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being 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. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example one

This embodiment is described in detail with reference to fig. 1. The high-temperature cable according to the present embodiment includes, in order from inside to outside, a conductive wire 1, a transparent FEP insulating layer 2, and a color FEP insulating layer 3. The thickness of the transparent FEP insulating layer 2 is not less than 0.5 mm; the lead 1 is formed by twisting a plurality of copper wires, and the twisting pitch ratio is 16-18. According to the test, the thickness of the transparent FEP insulating layer 2 is 0.5mm, so that it is not broken down under 15 KV. The use of the transparent FEP insulating layer 2 of 0.5mm thickness can improve sufficient puncture resistance. And a color FEP insulating layer 3 is arranged on the outer side of the transparent FEP insulating layer 2, so that identifiability can be provided for the cable. The wiring is convenient. The color FEP insulating layer 3 is made by adding color masterbatch to FEP resin so that the color FEP insulating layer 3 can have different colors. FEP is known as fluorinated ethylene propylene and translates into fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer) with english trade name: teflon FEP, is a class of chemicals. FEP is a copolymer of tetrafluoroethylene and hexafluoropropylene. The FEP has a crystalline melting point of 304 ℃ and a density of 2.15g/CC (grams per cubic centimeter). FEP is applied to soft plastics and has lower tensile strength, abrasion resistance, and creep resistance than many engineering plastics. It is chemically inert and has a low dielectric constant (2.1) over a wide range of temperatures and frequencies.

Further, in the present embodiment, the lead 1 is composed of 7 or 19 copper wires having a diameter of 0.25 mm. The number of the copper wires is set, so that the high-temperature cable can meet different requirements.

Further, the thickness of the color FEP insulating layer 3 is 0.05 mm. The diameter of the high-temperature cable can be made smaller.

Example two

This embodiment will be described in detail with reference to fig. 2. The high-temperature cable according to the present embodiment differs from the first embodiment in that: the central position of the lead 1 is provided with a kevlar filament 4, the fineness of the kevlar filament 4 is 200D, 400D or 600D, and 400D is selected in the embodiment. The selection of the kevlar filaments 4 can provide higher tension and load bearing for the high temperature cable.

Further, a layer of aramid insulating paper is arranged between the conducting wire 1 and the transparent FEP insulating layer 2.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A high-temperature cable is characterized in that a conducting wire (1), a transparent FEP insulating layer (2) and a color FEP insulating layer (3) are sequentially arranged from inside to outside; the thickness of the transparent FEP insulating layer (2) is not less than 0.5 mm; the lead (1) is formed by stranding a plurality of copper wires.

2. A high temperature cable according to claim 1, characterized in that the conductor (1) consists of 7 copper wires, the diameter of which is 0.25 mm.

3. A high temperature cable according to claim 1, characterized in that the conductor (1) consists of 19 copper wires.

4. A high temperature cable according to claim 1, characterized in that the thickness of the colour FEP insulation layer (3) is 0.05 mm.

5. A high temperature cable according to claim 2 or 3, wherein a kevlar filament (4) is arranged in the center of the conductor (1), and the fineness of the kevlar filament (4) is 200D, 400D or 600D.