CN2870210Y

CN2870210Y - Electric-power earthing net

Info

Publication number: CN2870210Y
Application number: CN 200520076243
Authority: CN
Inventors: 周明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-03
Filing date: 2005-10-03
Publication date: 2007-02-14
Anticipated expiration: 2015-10-03

Abstract

The utility model relates to an electric power ground mat, which comprises a cancellate ground row conductive outgoing line and ground electrode, the utility model is characterized in that grid bar consituting grounding row comprises copper clad steel bar, grid bars are welded by means of copper casting body. The utility model has the advantages of good conductivity, corrosion resisting property, mechanical strength and superior performance/price ratio.

Description

Electric power grounding grid

(1) technical field: the utility model relates to power technology, relates in particular to electric power grounding grid.

(2) background technology: alternative electric generation station or transformer station all are equipped with electric power grounding grid, it is made of the lead-out wire and the earth electrode that are embedded in underground latticed ground connection row, be connected with ground connection row conduction, the other end of lead-out wire connects the earth terminal of power system device, and the earth electrode other end directly inserts underground.Ground connection row of the prior art uses steel or full copper product to make, and the former price is lower, and its shortcoming is that corrosion resisting property is relatively poor, and especially the weld of ground connection row grid be easier to corrosion, so its useful life is shorter; The latter's corrosion resisting property and conducting electricity very well, but price height, and copper resource-constrained.

(3) summary of the invention: the applicant improves at above-mentioned shortcoming, and another kind of electric power grounding grid is provided, and requires its ground connection row's electric conductivity and corrosion resisting property good, and the bonding strength height of ground connection row grid, and price is more cheap than full copper product.

The technical solution of the utility model is as follows:

Electric power grounding grid, it comprises latticed ground connection row, and ground connection row conduction connects lead-out wire and earth electrode, and it is characterized in that the structure of the grid bar that described ground connection is arranged is as follows: its appearance is the copper layer, tight coated steel bar in the appearance copper layer, described copper layer thickness is at least greater than 0.25 millimeter; The structure of the earth electrode that is connected with described ground connection row conduction is as follows: its appearance is the copper layer, tight coated rod iron in the appearance copper layer; Be welded to connect by the copper material cast body between described ground connection row's the grid bar.

In the utility model ground connection row's grid bar by appearance copper layer with and interior coated steel bar constitute because electric current has kelvin effect, ground connection row has excellent conducting performance and corrosion resisting property thus; Connection between ground connection row's the grid bar is welded to connect by the copper material cast body, thereby has good connection mechanical strength.Copper layer thickness is the millimeter magnitude only, and so the copper covered steel material of structure is arranged material than full copper ground connection, and price is much lower.By as seen above-mentioned, the utlity model has the good ratio of performance to price.

(4) description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the cutaway view of Figure 1A-A direction and B-B direction;

Fig. 3 is the cutaway view of another embodiment A of the utility model shown in Figure 1-A direction and B-B direction;

Fig. 4 is the cutaway view of Fig. 1 C-C direction.

(5) embodiment

See Fig. 1, the utility model comprises latticed ground connection row 2, and ground connection row 2 is connected with lead-out wire 1 and earth electrode 4 conductions.The other end of lead-out wire 1 connects the earth terminal of power system device, and earth electrode 4 is an earth rod, and its other end directly inserts underground.

See Fig. 1, ground connection row 2 is welded to each other by grid bar 3 and connects and composes, and 5 is pad.Fig. 2, Fig. 3 illustrate the structure of grid bar respectively, it is made of copper layer 6 coated steel bar 7 respectively, it is closely coated to adopt conventional cold-extrusion technology to carry out, wherein copper layer 6 the best adopt cathode coppers, its thickness is at least greater than 0.25 millimeter, steel bar 7 adopts carbon steel, and grid bar shown in Figure 2 is a strip, and grid bar shown in Figure 3 is the pole shape.

See Fig. 1 Fig. 4, the connection between the grid bar 3 adopts the copper material cast body to be welded to connect.It is the welding connection structure that adopts the thermal welding technology in the prior art to form, its technology claims the chamotte fusion joining process again: adopt the copper product identical with copper layer 6 as melted material, melted material is melted through excessive heat, copper liquid injects between the grid bar to be welded, after the condensation, promptly realize the casting welding, form copper material cast body welding connection structure, joint geometry is uniform, performance and of fine qualities, its Welding Structure as shown in Figure 4, condensation copper layer among Fig. 48 is one with the bag copper-clad fusion of grid bar, 7 is by coated steel bar.Fig. 4 only cuts open the Welding Structure that the C-C horizontal direction is shown, and the Welding Structure of vertical direction is identical with Fig. 4.See Fig. 1, lead-out wire 1, earth electrode 4 respectively with busbar 2 grid bars between be connected and also adopt copper material cast body welding connection structure shown in Figure 4, wherein earth electrode 4 also is made of the coated steel bar of copper layer, constructs identical as shown in Figure 3.

Claims

1, electric power grounding grid, it comprises latticed ground connection row, and ground connection row conduction connects lead-out wire and earth electrode, and it is characterized in that the structure of the grid bar that described ground connection is arranged is as follows: its appearance is the copper layer, tight coated steel bar in the appearance copper layer.

2, by the described electric power grounding grid of claim 1, it is characterized in that described copper layer thickness is at least greater than 0.25 millimeter.

3, by the described electric power grounding grid of claim 1, it is characterized in that the structure of the earth electrode that is connected with described ground connection row conduction is as follows: its appearance is the copper layer, the interior tight coated rod iron of appearance copper layer.

4,, it is characterized in that being welded to connect by the copper material cast body between described ground connection row's the grid bar by claim 1 or 2 described electric power grounding grids.