CN216287646U

CN216287646U - Novel S-DH railway through ground wire for plateau climate

Info

Publication number: CN216287646U
Application number: CN202122506560.2U
Authority: CN
Inventors: 郑晓彬; 郑晓城; 赵明祥; 孟琨; 许翔; 蒋陆肄; 郑文彬; 许磊; 冯年瑞
Original assignee: Yunnan Duobao Cable Group Co ltd
Current assignee: Yunnan Duobao Cable Group Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-12
Anticipated expiration: 2031-10-18

Abstract

The utility model provides a novel plateau climate S-DH railway through ground wire which comprises a wire core, a sheath layer and an anticorrosive coating, wherein the sheath layer comprises an inner sheath layer, a middle sheath layer and an outer sheath layer; the sinle silk includes that alarm line and conductor combination form, be equipped with the inner sheath layer on the every conductor, be equipped with the filling layer between inner sheath layer and the alarm line, the outer sheath layer that sets up of filling layer, well sheath layer is anticorrosive coating outward, anticorrosive coating is equipped with anti ultraviolet's oversheath layer outward. The sheath has the characteristics of difficult dissolution and difficult melting, not only keeps the conductive performance and the environmental protection performance of the original thermoplastic conductive polymer sheath through ground wire, but also improves the heat resistance, the chemical resistance, the radiation resistance and the mechanical and physical properties of the through ground wire; the ultraviolet screening agent of the outer sheath layer can reflect and refract ultraviolet rays, so that the aim of resisting ultraviolet radiation is fulfilled, and the aging speed of the cable is slowed down.

Description

Novel S-DH railway through ground wire for plateau climate

Technical Field

The utility model relates to the field of cables, in particular to a novel S-DH railway through ground wire for plateau climate.

Background

A DH/S-DH railway through ground wire cable (hereinafter referred to as through ground wire) is suitable for the comprehensive grounding system of the railway, the product is a grounding conductor which connects the traction power supply reflux, the electric power supply, the signal, the communication and other electronic information systems and various devices along the railway together to form equipotential connection, and the functions of electromagnetic induction interference resistance, electrostatic interference resistance, lightning invasion resistance and the like of the devices along the railway are realized. The alloy outer sheath of the product has excellent corrosion resistance and environmental protection performance, and is suitable for being laid in complex soil environments in China. The through ground wire is a form of railway comprehensive grounding, and is buried in power cable grooves at two sides of a railway line (one through ground wire is buried in each power cable groove at each side), and professional equipment and other metal objects such as signals, communication, electrification, power and the like at two sides of the railway line are connected with the comprehensive through ground wire, so that equipotential connection between each system and each equipment of the railway is guaranteed. The mode of uniformly grounding the whole line is adopted, so that potential differences among different equipment and different systems and potential safety hazards of people and equipment which are possibly caused are reduced, and the damage of the single ground wire of each professional equipment to the stability of the roadbed is reduced. Comprehensive through grounding brief description railway grounding engineering is a complex and comprehensive system engineering. The main purpose of grounding is to ensure personal safety and equipment safety. The comprehensive performance is that the system provides lightning protection grounding of buildings and structures along the railway, working grounding of strong and weak current equipment, protection grounding, overvoltage-proof grounding, static-proof grounding, shielding grounding and the like, and almost covers a certain range along the railway.

The through ground wire used at present is a lead-clad copper wire, but lead can cause serious pollution to the environment. Moreover, the alarm wire in the conventional through ground wire is arranged inside or in the middle of the stranded conductor, so that the maintenance and construction are inconvenient to continue. In addition, the S-DH railway through ground wire arranged in the plateau climate construction needs to deal with various severe plateau environments, and the ordinary railway through ground wire cannot be competent.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel plateau climate S-DH railway through ground wire which can cope with severe environments of plateaus and guarantee normal work of the railway through ground wire.

The technical scheme of the utility model is realized as follows: a novel plateau climate S-DH railway through ground wire comprises a wire core, a sheath layer and an anti-corrosion coating, wherein the sheath layer comprises an inner sheath layer, a middle sheath layer and an outer sheath layer; the sinle silk includes that alarm line and conductor combination form, be equipped with the inner sheath layer on the every conductor, be equipped with the filling layer between inner sheath layer and the alarm line, the outer sheath layer that sets up of filling layer, well sheath layer is anticorrosive coating outward, anticorrosive coating is equipped with anti ultraviolet's oversheath layer outward.

Preferably, the conductors in the wire core are a plurality of copper rods, the inner sheath layer is a tin-plated layer covering each copper rod, the alarm wire and the conductors are relatively independent and are covered by the filling layer and the middle sheath layer in a wrapping mode.

Preferably, the middle sheath layer adopts a thermosetting conductive polymer material as a sheath material; the outer sheath layer is a polyolefin sheath layer added with an ultraviolet shielding agent.

Preferably, the conductors in the wire core are three copper rods with the same size, a delta-shaped structure is formed, and each copper rod is wrapped by an inner sheath layer, namely a tin-plated layer.

Preferably, the number of the alarm lines is three, and one alarm line is arranged in a gap between every two conductors.

As preferred, a bar copper of conductor in the sinle silk, the bar copper surface sets up the tin coating and is the inner sheath layer, is equipped with several alarm lines outside the inner sheath layer, and it has the filling layer to fill around the alarm line, and the filling layer is middle sheath layer outward.

Compared with the prior art, the utility model has the advantages that: the thermosetting conductive polymer material is converted into a three-dimensional mesh structure from a linear or branched structure in the processing process, so that the sheath has the characteristic of difficult dissolution and difficult melting, the conductive performance and the environmental protection performance of the original thermoplastic conductive polymer sheath through ground wire are maintained, and the heat resistance, the chemical resistance, the radiation resistance and the mechanical and physical properties of the through ground wire are improved; the ultraviolet screening agent on the outer sheath layer can reflect and refract ultraviolet rays, the purpose of resisting ultraviolet radiation is achieved, the aging speed of the cable is reduced, and the photovoltaic cable can be used for a long time in a plateau environment and is not easy to be exposed to the sun.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the present invention.

In the figure: 1. a conductor; 2. an alarm line; 3. an inner jacket layer; 4. a filling layer; 5. an anti-corrosion coating; 6. a middle sheath layer; 7. an outer jacket layer.

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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 and 2, the novel plateau climate S-DH railway through ground wire comprises a wire core, a sheath layer and an anti-corrosion coating 5, wherein the sheath layer comprises an inner sheath layer 3, a middle sheath layer 6 and an outer sheath layer 7; the sinle silk includes that alarm line 2 and conductor 1 make up and form, be equipped with inner sheath layer 3 on every conductor 1, be equipped with filling layer 4 between inner sheath layer 3 and the alarm line 2, filling layer 4 is equipped with well restrictive coating 6 outward, and well restrictive coating 6 is anticorrosive coating 5 outward, anticorrosive coating 5 is equipped with anti ultraviolet's oversheath layer 7 outward.

Preferably, the conductor 1 in the wire core is a plurality of copper rods, the inner sheath layer 3 is a tin-plated layer covering each copper rod, the alarm wire 2 and the conductor 1 are relatively independent and are wrapped and covered by the filling layer 4 and the middle sheath layer 6.

Preferably, the middle sheath layer 6 adopts a thermosetting conductive polymer material as a sheath material; the outer sheath layer 7 is a polyolefin sheath layer added with an ultraviolet shielding agent.

Preferably, the conductors 1 in the wire core are three copper rods with the same size, a delta-shaped structure is formed, and each copper rod is wrapped by an inner sheath layer 3, namely a tin coating.

Preferably, the number of the alarm wires 2 is three, and one alarm wire 2 is arranged in each gap between two conductors 1.

As shown in fig. 1, the wire core is composed of a conductor 1, an alarm wire 2 and a filling layer 4, the conductor 1 is composed of three copper pipes, the copper pipes are covered with tin-plated layers, namely inner sheath layers 3, the tin-plated layers can effectively protect the copper pipes, and the copper pipes are prevented from rusting and corroding to generate verdigris to further damage cables; the three copper pipes form a structure shaped like a Chinese character 'pin', and an alarm line 2 is respectively arranged in the space of an included angle between every two copper pipes. Fill up the gap through filling layer 4 between alarm line 2 and the inner sheath layer 3, guarantee that the sinle silk is not hard up.

Preferably, 1 bar copper of conductor in the sinle silk, the bar copper surface sets up the tin coating and is inner sheath layer 3, and inner sheath layer 3 is equipped with several alarm lines 2 outward, and it has filling layer 4 to fill around alarm line 2, and filling layer 4 is middle sheath layer 6 outward.

As shown in fig. 2, the wire core is formed by taking an independent copper pipe as a conductor 1, the inner sheath layer 3 outside the conductor 1 is a tin-plated layer, and the tin-plated layer can effectively protect the copper pipe and prevent the copper pipe from rusting and corroding to generate verdigris so as to damage a cable; a plurality of alarm lines 2 are arranged outside the inner sheath layer 3, the alarm lines 2 are evenly distributed around the inner sheath layer 3, gaps are filled between the alarm lines 2 and the inner sheath layer 3 through the filling layer 4, and the fact that the wire cores are not loose is guaranteed.

Alarm line 2 sets up at the outermost circle of sinle silk, and when the sinle silk suffered to destroy, for example outside construction in violation of rules and regulations was wholly dug the ground wire and is broken, perhaps the road bed subsides and lets the ground wire pull tear, perhaps the animal gnaws and gnaws brokenly again, alarm line 2 will be first when it dashes at the outer lane, can in time report to the police when being destroyed.

The middle sheath layer 6 adopts a thermosetting conductive polymer material as a sheath material, and the thermosetting conductive polymer material is converted into a three-dimensional mesh structure from a linear or branched structure in the processing process, so that the sheath has the characteristic of difficult dissolution and difficult melting, the conductive performance and the environmental protection performance of the original thermoplastic conductive polymer sheath through ground wire are maintained, the heat resistance, the chemical resistance, the radiation resistance and the mechanical physical performance of the through ground wire are also improved, the through ground wire is not self-ignited under the condition that the internal conductor 1 bears large current for a long time to generate high temperature, and the thermal deformation temperature of the product is improved. The grounding device has the characteristics of good grounding effect, environmental protection, corrosion resistance, high temperature resistance, no spontaneous combustion, large short-circuit current capacity and the like.

The ultraviolet screening agent of the outer sheath layer 7 can reflect and refract ultraviolet rays, so that the purpose of resisting ultraviolet radiation is achieved, the aging speed of the cable is reduced, and the photovoltaic cable can be used for a long time in a plateau environment and is not easy to be exposed to the sun.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a novel S-DH railway link up ground wire of plateau climate, includes sinle silk, restrictive coating and anticorrosive coating, its characterized in that: the sheath layer comprises an inner sheath layer, a middle sheath layer and an outer sheath layer; the sinle silk includes that alarm line and conductor combination form, be equipped with the inner sheath layer on the every conductor, be equipped with the filling layer between inner sheath layer and the alarm line, the outer sheath layer that sets up of filling layer, well sheath layer is anticorrosive coating outward, anticorrosive coating is equipped with anti ultraviolet's oversheath layer outward.

2. The plateau climate novel S-DH railway through ground wire of claim 1, wherein: the conductor in the sinle silk is the several bar copper, the tin coating of inner sheath layer for covering on every bar copper, alarm line and conductor are relatively independent, and cover by filling layer and well restrictive coating parcel.

3. The plateau climate novel S-DH railway through ground wire of claim 2, wherein: the middle sheath layer adopts a thermosetting conductive high polymer material as a sheath material; the outer sheath layer is a polyolefin sheath layer added with an ultraviolet shielding agent.

4. The plateau climate novel S-DH railway through ground wire of claim 3, wherein: the conductor in the sinle silk is three copper bars that the size is the same, constitutes article font structure, and every copper bar all wraps up there is the inner sheath layer, i.e. tin coating.

5. The plateau climate novel S-DH railway through ground wire of claim 4, wherein: the alarm lines are three, and one alarm line is arranged in a gap between every two conductors.

6. The plateau climate novel S-DH railway through ground wire of claim 2, wherein: the copper bar of conductor in the sinle silk, the copper bar surface sets up the tin coating and is the inner sheath layer, and the inner sheath layer is equipped with several alarm lines outward, and it has the filling layer to fill around the alarm line, and the filling layer is middle sheath layer outward.