CN216287653U

CN216287653U - Weather resistance wire and cable with expend with heat and contract with cold protective structure

Info

Publication number: CN216287653U
Application number: CN202122935987.4U
Authority: CN
Inventors: 蔡彦敏; 马俊杰; 金航; 金世强; 李高强
Original assignee: Henan Jinshui Cable Group Co ltd
Current assignee: Henan Jinshui Cable Group Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-12
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a weather-resistant wire cable with a thermal expansion and cold contraction protection structure, which belongs to the technical field of wire cables and comprises a wire core, wherein an isolation layer is arranged outside the wire core, an outer insulation layer is arranged outside the isolation layer, a shielding layer is arranged outside the outer insulation layer, and an outer sleeve is arranged outside the shielding layer. Thereby coping with a large temperature difference.

Description

Weather resistance wire and cable with expend with heat and contract with cold protective structure

Technical Field

The utility model relates to the technical field of wires and cables, in particular to a weather-resistant wire and cable with a thermal expansion and cold contraction protection structure.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life.

With the development of industrial production, a large number of assembled cables required by survey equipment, instruments and mechanical equipment are used in low-temperature environments, and the damage resistance and the temperature resistance of the cables are tested on how to ensure that the equipment can normally work under severe low-temperature conditions.

The common cable is generally rigid in a freezing environment or low-temperature weather, and is likely to be damaged in dragging, rolling, bending and moving, and particularly, when the common cable is used in an environment below-20 ℃, the common cable is often embrittled, torn and broken, so that the normal use of the common cable is seriously influenced.

Based on the technical scheme, the utility model designs the weather-resistant electric wire with the thermal expansion and cold contraction protection structure to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a weather-resistant electric wire with a thermal expansion and cold contraction protection structure, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a weather-resistant wire cable with a thermal expansion and cold contraction protection structure comprises a wire core, wherein an isolation layer is arranged outside the wire core, an outer insulation layer is arranged outside the isolation layer, a shielding layer is arranged outside the outer insulation layer, and an outer sleeve is arranged outside the shielding layer;

the cable core comprises tinned copper wires, an inner insulating layer is arranged on the surfaces of the tinned copper wires, and reinforcing ropes are arranged among the tinned copper wires;

the shielding layer is provided with two layers, and the two layers are arranged in a wavy manner.

Preferably, the main body of the inner insulating layer is PTFE fluoroplastic, the main body of the reinforcing cord is aramid fiber, and the specification of the reinforcing cord is 3000D.

Preferably, the tinned copper wire is provided with a plurality of strands, a gap is formed between each strand of tinned copper wire, and the reinforcing rope is located inside the gap.

Preferably, the inner insulating layer wraps the surface of the tinned copper wire, the inner insulating layer and the reinforcing rope are both fixedly connected inside the isolating layer, and the main body of the isolating layer is made of linear low-density polyethylene.

Preferably, the isolation layer is fixedly connected inside the outer insulation layer, and the main body of the outer insulation layer is ethylene propylene diene monomer.

Preferably, the outer insulating layer is fixedly connected to the inside of the shielding layer, and the main body of the shielding layer is an aluminum-plastic composite belt.

Preferably, the shielding layer is fixedly connected to the inside of the outer sleeve, and the main body of the outer sleeve is polyether polyurethane.

Compared with the prior art, the utility model has the beneficial effects that: the cable is provided with the shielding layer consisting of the aluminum-plastic composite belt, the shielding layer consists of the single-sided or double-sided composite ethylene-acrylic acid copolymer of the aluminum belt, and can provide reliable moisture-proof, shielding and chemical protection performance for the wire core, and the aluminum-plastic composite belt is arranged in a wavy manner, so that the aluminum-plastic composite belt has certain extensibility and elasticity, and can be pulled according to the temperature change when the temperature difference change is generated on the whole cableThe wire harness is stretched or contracted, so that the whole cable has better deformation capacity to cope with larger temperature difference, and meanwhile, the polyether polyurethane outer sleeve is also arranged to be matched with the cable, so that the cable not only has excellent flexibility and environmental resistance (humidity, ozone and microorganisms), but also has excellent low-temperature flexibility, high strength, high elasticity, wear resistance and tear resistance, and the tensile strength of the cable can reach 40N/mm²And the elongation at break can reach 600 percent, so that the whole cable has excellent elasticity while the weather resistance is ensured, and the occurrence of a fracture phenomenon is avoided.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the structure of the present invention;

FIG. 3 is a partial cross-sectional view of the shield of the present invention;

FIG. 4 is an enlarged view of the utility model at A in FIG. 1.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a wire core; 11. tinning copper wires; 12. an inner insulating layer; 13. a reinforcing cord; 2. an isolation layer; 3. an outer insulating layer; 4. a shielding layer; 5. an outer sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

Example one

Referring to the drawings, the present invention provides a technical solution: a weather-resistant wire cable with a thermal expansion and cold contraction protection structure comprises a wire core 1, wherein an isolation layer 2 is arranged outside the wire core 1, an outer insulation layer 3 is arranged outside the isolation layer 2, a shielding layer 4 is arranged outside the outer insulation layer 3, and an outer sleeve 5 is arranged outside the shielding layer 4;

the wire core 1 comprises tinned copper wires 11, an inner insulating layer 12 is arranged on the surfaces of the tinned copper wires 11, and reinforcing ropes 13 are arranged between the tinned copper wires 11;

the shielding layer 4 is provided with two layers, and the two layers of shielding layers 4 are arranged in a wavy manner.

Specifically, tinned copper wire 11 is provided with the stranded, and all is provided with the clearance between every tinned copper wire 11, strengthens rope 13 and is located inside the clearance, and tinned copper wire 11 is the copper line of a thin layer metallic tin on the copper line surface, and tinned copper wire 11 material is softer, and electric conductive property is good, compares with bare copper line, and its corrosion resistance, oxidation resistance are stronger, can prolong the life of light current cable greatly.

Specifically, the surface at tinned copper wire 11 is wrapped up in to internal insulation 12, internal insulation 12 and the equal fixed connection of reinforcing rope 13 are in the inside of isolation layer 2, the main part of isolation layer 2 is linear low density polyethylene, isolation layer 2 chooses for use the low temperature nature, the even better linear low density polyethylene of impact property and fatigue nature, linear low density polyethylene can not only improve shock resistance as isolation layer 2, but also has better lubricity, can improve the resistant alternation bending property of cable to a certain extent.

It is specific, 3 fixed connection of outer insulating layer are in the inside of shielding layer 4, the main part of shielding layer 4 is compound aluminium-plastic tape, shielding layer 4 comprises aluminium strip single face or two-sided compound ethylene acrylic acid copolymer, can provide reliable dampproofing to sinle silk 1, shielding and chemical protection performance, and this compound aluminium-plastic tape is wavy setting, the purpose makes it possess certain extension elasticity, when the cable wholly produces the variation in temperature, compound aluminium-plastic tape can stretch or shrink pencil according to the change of temperature, thereby make the cable wholly have better deformability, thereby deal with great difference in temperature.

Specifically, the shielding layer 4 is fixedly connected inside the outer sleeve 5, the main body of the outer sleeve 5 is polyether polyurethane, the polyether polyurethane has excellent flexibility, environmental humidity resistance, ozone and microorganism resistance, excellent low-temperature flexibility, high strength, high elasticity, wear resistance and tear resistance, and the tensile strength of the polyether polyurethane can reach 40N/mm²And the elongation at break can reach 600 percent.

Example two

The structure of this embodiment is substantially the same as that of the first embodiment, except that the main body of the inner insulating layer 12 is PTFE fluoroplastic, the PTFE fluoroplastic insulation can ensure good electrical and mechanical properties of the cable as a whole, the main body of the reinforcing cord 13 is aramid fiber, the specification of the reinforcing cord 13 is 3000D, the aramid fiber has the greatest characteristics of high strength of 22 g/denier or more, about 5-6 times that of the steel wire, high modulus of 450 g/denier, about 2-3 times that of the steel wire and glass fiber, low specific gravity, about 1/5 of the steel wire, and the fiber also has excellent characteristics of high temperature resistance, chemical corrosion resistance, self-extinguishing, and the like.

EXAMPLE III

The structure of this embodiment is basically the same as that of the first embodiment, except that the isolation layer 2 is fixedly connected inside the outer insulation layer 3, the main body of the outer insulation layer 3 is ethylene propylene diene monomer, and the ethylene propylene diene monomer has excellent aging resistance, weather resistance, ozone resistance, sunlight resistance, heat resistance, water resistance, steam resistance, ultraviolet ray resistance, radiation resistance and other performances, and can ensure the overall aging resistance and weather resistance of the cable.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a weatherability wire and cable with expend with heat and contract with cold protective structure, includes sinle silk (1), its characterized in that: an isolation layer (2) is arranged outside the wire core (1), an outer insulation layer (3) is arranged outside the isolation layer (2), a shielding layer (4) is arranged outside the outer insulation layer (3), and an outer sleeve (5) is arranged outside the shielding layer (4);

the cable core (1) comprises tinned copper wires (11), an inner insulating layer (12) is arranged on the surface of each tinned copper wire (11), and reinforcing ropes (13) are arranged between the tinned copper wires (11);

the shielding layer (4) is provided with two layers, and the shielding layer (4) is arranged in a wavy manner.

2. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: the main body of the inner insulating layer (12) is PTFE fluoroplastic, the main body of the reinforcing rope (13) is aromatic polyamide fiber, and the specification of the reinforcing rope (13) is 3000D.

3. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: the tin-plated copper wires (11) are provided with multiple strands, gaps are formed among the tin-plated copper wires (11), and the reinforcing ropes (13) are located in the gaps.

4. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: the inner insulating layer (12) wraps the surface of the tinned copper wire (11), the inner insulating layer (12) and the reinforcing rope (13) are fixedly connected inside the isolating layer (2), and the main body of the isolating layer (2) is made of linear low-density polyethylene.

5. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: the isolation layer (2) is fixedly connected inside the outer insulation layer (3), and the main body of the outer insulation layer (3) is ethylene propylene diene monomer.

6. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: the outer insulating layer (3) is fixedly connected inside the shielding layer (4), and the main body of the shielding layer (4) is an aluminum-plastic composite belt.

7. The weatherable electrical wire and cable with thermal expansion and contraction protection structure according to claim 1, wherein: shielding layer (4) fixed connection is in the inside of outer tube (5), the main part of outer tube (5) is polyether polyurethane.