CN210040590U

CN210040590U - Composite graphite grounding wire

Info

Publication number: CN210040590U
Application number: CN201920478325.9U
Authority: CN
Inventors: 许煜; 高燚; 肖先华
Original assignee: Guizhou Taiming Electric Power Industry Co Ltd; Hainan Huawei Voice & Electric Technology Co Ltd
Current assignee: Hainan Huawei Acoustic Electric Technology Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-02-07
Anticipated expiration: 2029-04-10

Abstract

The embodiment of the application discloses compound graphite earth connection, including outside graphite worm layer, middle modified graphite layer and inside graphite worm layer, outside graphite worm layer middle modified graphite layer with inside graphite worm layer is the adhesion in proper order. The embodiment of the application provides a compound graphite earth connection adopts inside and outside graphite worm layer, can strengthen the corrosion resistance of compound graphite earth connection, and middle modified graphite layer has good electric conductivity to obtain the compound graphite earth connection that has strong electric conductivity and strong corrosion resistance.

Description

Composite graphite grounding wire

Technical Field

The application relates to the technical field of grounding wires of high-voltage iron towers, in particular to a composite graphite grounding wire.

Background

The grounding wire needs to receive lightning stroke and impact of short-circuit current of the power system for a long time, long-term reliability of work of the grounding wire is critical to normal operation of the power system, and the grounding wire is an important channel for abnormal large current of a power grid to flow to the ground. The existing metal grounding wire has relatively high cost, is easily corroded due to the influence of a complex soil environment, has high contact resistance with soil, has high grounding impedance of high-frequency current, and has the risk of theft; the graphite is an inorganic non-metallic material, has good conductivity close to metal and very physical and chemical properties, such as resistance to corrosion of most strong acid, strong base and other organic solvents, high temperature resistance and low acquisition cost; however, the common graphite has large brittleness, more impurities, low mechanical strength, difficult molding and difficult application to the grounding wire.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a compound graphite earth connection adopts inside and outside graphite worm layer, can strengthen the corrosion resistance of compound graphite earth connection, and middle modified graphite layer has good electric conductivity to obtain the compound graphite earth connection that has strong electric conductivity and strong corrosion resistance.

The embodiment of the application provides a compound graphite earth connection, including outside graphite worm layer, middle modified graphite layer and inside graphite worm layer, outside graphite worm layer middle modified graphite layer with inside graphite worm layer is the adhesion in proper order.

Preferably, the intermediate modified graphite layer is specifically carbon fibers laid in parallel.

Preferably, the carbon fibers are wrapped by the silicone rubber-based carbon nanotube conductive adhesive, and the outer graphite worm layer, the middle modified graphite layer and the inner graphite worm layer are sequentially adhered through the silicone rubber-based carbon nanotube conductive adhesive.

Preferably, the silicone rubber-based carbon nanotube electric glue is doped with silver-plated copper powder.

According to the technical scheme, the embodiment of the application has the following advantages:

in the embodiment of the application, a compound graphite earth connection is provided, including outside graphite worm layer, middle modified graphite layer and inside graphite worm layer, outside graphite worm layer middle modified graphite layer with inside graphite worm layer is in proper order the close combination.

Drawings

Fig. 1 is a first schematic structural diagram of a composite graphite grounding wire according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural view of a composite graphite grounding wire according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a composite graphite grounding wire according to an embodiment of the present disclosure;

fig. 4 is a schematic cross-sectional structure view of silver-plated copper powder particles of a composite graphite grounding wire according to an embodiment of the present disclosure;

description of the drawings:

1. an outer layer of graphite worms; 2. an inner graphite worm layer; 3. a middle modified graphite layer; 4. silver-plated copper powder; 5. carbon fibers; 6. silicone rubber-based carbon nanotube electrical cement; 7. a silver coating layer; 8. the cross section of copper powder particles; 9. a composite graphite grounding wire.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a composite graphite grounding wire according to an embodiment of the present disclosure; fig. 2 is a second schematic structural view of a composite graphite grounding wire according to an embodiment of the present disclosure; fig. 3 is a schematic structural diagram of a composite graphite grounding wire according to an embodiment of the present disclosure; fig. 4 is a schematic cross-sectional structure view of silver-plated copper powder of a composite graphite grounding wire according to an embodiment of the present application.

The embodiment of the application provides a compound graphite earth connection, including outside graphite worm layer 1, middle modified graphite layer 3 and inside graphite worm layer 2, outside graphite worm layer 1, middle modified graphite layer 3 and inside graphite worm layer 2 combine closely in proper order.

It should be noted that the composite graphite grounding wire provided in the embodiment of the present application is composed of three layers of materials, namely, an outermost external graphite worm layer, an intermediate modified graphite layer in an intermediate layer, and an internal graphite worm layer, and is bonded by mechanical pressing according to the vertical arrangement sequence shown in fig. 1 to form an integral modified composite graphite cloth, and then the composite graphite cloth is cut and twisted to form a single-stranded composite graphite grounding wire, and finally, a plurality of graphite wires are tightly wound (for example, in a litz wire winding manner) and woven for a plurality of times, so as to form an enhanced composite graphite grounding wire with high conductivity and high corrosion resistance;

the outer graphite worm layer and the inner graphite worm layer are sequentially subjected to acidification, high temperature and expansion treatment to obtain flexible graphite worms which are easy to process and form, so that the flexible graphite worms can be used as a manufacturing matrix of the grounding wire, and the structures of the outer graphite worm layer and the inner graphite worm layer can also play an effective role in wrapping and protecting the middle modified graphite layer with middle conductivity and mechanical reinforcement; the outer graphite worm layer and the inner graphite worm layer are mechanically pressed into a cloth shape, and the thickness can be adjusted according to actual needs to be used as the skin of the grounding wire.

The middle modified graphite layer 3 is specifically carbon fibers 5 laid in parallel.

The silicon rubber-based carbon nanotube conductive adhesive wraps carbon fibers, and the outer graphite worm layer, the middle modified graphite layer and the inner graphite worm layer are sequentially adhered through the silicon rubber-based carbon nanotube conductive adhesive.

The silicone rubber-based carbon nanotube electric glue 6 is doped with silver-plated copper powder 4.

Referring to fig. 3 and 4, silver-plated copper powder 4, carbon fiber 5, silicone rubber-based carbon nanotube electric glue 6 and silver-plated layer 7 are respectively provided;

the middle modified graphite layer is a modified enhancement layer, and carbon fibers which are parallel to each other, have high conductivity and tear resistance and tensile strength are mainly paved to be used as a framework of the composite grounding wire; through the immersion and adhesion of the silicon rubber-based carbon nanotube conductive adhesive and mechanical rolling pressing, the outer graphite worm layer, the middle modified graphite layer and the inner graphite worm layer can form a whole, namely a piece of modified and enhanced composite graphite cloth; the silicone rubber-based carbon nanotube conductive adhesive is doped with silver-plated copper powder, and the through-current capacity of the composite graphite grounding wire provided by the embodiment of the application can be further enhanced after the silver-plated copper powder is doped, so that the grounding resistance is reduced; the parallel laying of the carbon fibers is mainly used for enhancing the mechanical property, the silver-plated copper powder is doped with the conductive adhesive, the current capacity of the current can be further enhanced, and the doping proportion can be adjusted according to the actual requirement; the silver plating of the copper powder can also enhance the conductive capability, can also effectively avoid the electrochemical corrosion of copper particles and metal substances in nearby grounding devices, and meanwhile, the powder is beneficial to reducing the production cost and improving the performance.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. The composite graphite grounding wire is characterized by comprising an external graphite worm layer, an intermediate modified graphite layer and an internal graphite worm layer, wherein the external graphite worm layer, the intermediate modified graphite layer and the internal graphite worm layer are sequentially adhered.

2. The composite graphite grounding wire of claim 1, wherein the intermediate modified graphite layer is specifically carbon fiber laid in parallel.

3. The composite graphite grounding wire of claim 2, further comprising a silicone rubber-based carbon nanotube conductive adhesive, wherein the carbon fibers are wrapped by the silicone rubber-based carbon nanotube conductive adhesive, and the outer graphite worm layer, the intermediate modified graphite layer and the inner graphite worm layer are sequentially bonded by the silicone rubber-based carbon nanotube conductive adhesive.

4. The composite graphite grounding wire of claim 3, wherein the silicone rubber-based carbon nanotube electrical adhesive is doped with silver-plated copper powder.