CN2454912Y - Metal-graphite carthing body - Google Patents
Metal-graphite carthing body Download PDFInfo
- Publication number
- CN2454912Y CN2454912Y CN 00253497 CN00253497U CN2454912Y CN 2454912 Y CN2454912 Y CN 2454912Y CN 00253497 CN00253497 CN 00253497 CN 00253497 U CN00253497 U CN 00253497U CN 2454912 Y CN2454912 Y CN 2454912Y
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- Prior art keywords
- graphite
- cylinder
- earth electrode
- metal
- metal cartridge
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Abstract
The utility model relates to a metal graphite earthing body, which comprises a graphite body, and a metal cylinder and a cable leading wire which are assembled in the graphite body, wherein, the metal cylinder is encapsulated in a groove at the periphery of the graphite body by utilizing gum casting graphite; one end of a cylinder is respectively transversely inserted in a deep hole of the graphite member and is connected with a core wire with tin of the cable leading wire in an inserting way, and the cylinder and the core wire with tin are perfused into integration; the other end of the cylinder are connected two by two through the metal cylinder. The earthing body has the advantages of compact structure, small size, convenience to construction, detection, and property adjustment, high current conducting performance, stable electrical specification, and high safety. The utility model obviously reduces maintenance cost, and extends service life.
Description
The utility model relates to a kind of safety grounding device, the metallic graphite carbon earth electrode of usefulness such as particularly a kind of lightning protection earthing, working earthing, zero line ground connection, anti-static grounding.
As everyone knows, in departments such as electric power, communication, broadcasting, TV, computer system, oil, chemical industry, mine, building and national defence, railway, aviation, seismic networks, for preventing thunder and lightning and guarantee personal safety that setting up has earthing device.These earthing device mostly are the metal earth electrode.Be the earth electrode that is made of metals such as copper coin, copper mesh, angle steel and steel pipes, easily oxidation and rusting corrosion raises earth resistance, generally all rots at 3-5, so there is the weak point in useful life, the ground connection performance such as stablizes inadequately at drawback.Though the graphite earth electrode is anti-oxidant, corrosion-resistant, long service life, its electric conductivity is far away from metal material.Therefore the relatively heavier inconvenience construction of graphite electrode in addition influences it and further applies.
The purpose of this utility model provides a kind of metallic graphite carbon earth electrode, and this earth electrode compact conformation, volume be little, be convenient to construction, detection and characteristic adjustment, its electric conductivity height, electrical characteristic is stable, safe and reliable, significantly reduced maintenance cost, improved useful life.
The purpose of this utility model is achieved in that this earth electrode comprises graphite body and assembles its interior metal cartridge and cable tail, wherein metal cartridge utilizes glue cast stone China ink to be encapsulated in the graphite body perimeter trench, cylinder one end extends transversely into respectively in the graphite body deep hole and pegs graft with the tining heart yearn of cable tail, and be integral with lead-containing alloy perfusion, the other end joins in twos with metal cartridge.
Because the utility model is improved on the structure base of existing earth electrode goes out, be very easy to make and construction.The metal cartridge of this device adopts the shape that conducts electricity very well to make, it is encapsulated in the graphite body groove with glue cast stone China ink, can guarantee that cylinder is not oxidized, prevent corrosion, prolong earth electrode useful life, effectively overcome the easy corrosion that existing metal earth electrode exists, reduce the shortcoming in useful life, metal cartridge stretches in the graphite body deep hole and the tining heart yearn inserted terminal of cable tail in addition, pour into lead-containing alloy, make cylinder, graphite body, cable tail is combined into one, except that reducing significantly the contact resistance, also can significantly improve its safety and reliability.The other end that metal cartridge is encapsulated in the graphite body perimeter trench joins it in twos with the metal cartridge of same specification, this has not only strengthened the bulk strength of earth electrode, and obviously improved electrical characteristic, make it structure compact more, be convenient to construction, detection and characteristic adjustment.The above-mentioned advantage of this device has fundamentally changed the disadvantage that existing earthing device must keep in repair every year, bury underground again, has both saved wide variety of materials, manpower, fund, has reduced maintenance cost again, has alleviated people's labour intensity, makes it more to be suitable for to apply.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a kind of concrete structure schematic diagram of the utility model.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
Fig. 3 is the cutaway view of Fig. 1 along the B-B line.
Describe concrete structure of the present utility model in detail according to Fig. 1-3.This earth electrode comprises parts such as graphite body 1, metal cartridge, cable tail 6, lead-containing alloy 5.Wherein the profile of graphite body 1 can be made shapes such as round, prism and flat cylinder on request, and its periphery is processed with the groove of the metal cartridge of can packing into, and the groove two ends are provided with horizontal deep hole.Metal cartridge is divided into perpendicular metal cartridge 4, the horizontal metal cartridge 2 that has horizontal elbow.Perpendicular metal cartridge 4 is packed in the groove of graphite body 1, and insert in the horizontal deep hole in groove bottom its horizontal elbow bottom.Cable tail 6 stretches into graphite body 1 middle part vestibule end and peels insulating barrier off, the heart yearn that exposes tining respectively intersects with the horizontal elbows of the perpendicular metal cartridge 4 of insertion and is plugged on, 5 perfusions of reusable lead base alloy, perpendicular metal cartridge 4, graphite body 1 and cable tail 6 are struck up partnership, the upper end of perpendicular metal cartridge 4 joins it in twos with the horizontal metal cartridge 2 of same specification, the bulk strength of earth electrode is strengthened, and obviously improved electrical characteristic.The quantity of metal cartridge can be chosen according to actual needs, and it can be solid or hollow cylindrical body, and profile can be shapes such as round, cylindrical body or flat cylinder.When metal cartridge is installed in the perimeter trench of graphite body 1, tamp groove with glue cast stone China ink 3, equating is whole.Glue cast stone China ink 3 is the pastes that adopt fine graphite powders and electrically conducting adhesive mixing to make.
This earth electrode method for embedding can be determined according to situations such as actual instructions for use, burial place, operating conditions.If adopt the method for embedding of long-acting liquid resistance reducing agent, can install splice tray and water injection pipe additional for ease of detecting with the characteristic adjustment.Its resistance reducing agent amount ratio metal earth electrode is few, and easy construction is effective.Various earth electrode internal resistance measurement values are compared as follows table:
| Earth electrode kind (rice) φ 0.150 graphite φ 0.150 metallic graphite carbon | Internal resistance value (ohm) | |
| L=0.8 rice | L=0.5 rice | |
| 0.00755 | 0.00427 0.0027 | |
As seen from the above table, 0.5 meter the utility model metallic graphite carbon earth electrode is than isometric graphite earth electrode internal resistance about the last 63.2% that descend, than 0.8 meter graphite earth electrode internal resistance the last 35.7% that descend.Earth electrode of the present utility model can be realized miniaturization, so can obviously save material and fund.
Two kinds of earth electrode contact internal resistance measurement value comparison sheets:
| Earth electrode kind (rice) | Internal resistance value (ohm) |
| L=0.5 rice | |
| φ 0.150 graphite φ 0.150 metallic graphite carbon | 0.00221 0.00072 |
The utility model earth electrode is than the contact internal resistance of isometric graphite earth electrode the last 32.5% that descend as seen from the above table.Because of the decline significantly of the contact internal resistance of the utility model earth electrode,, make the natural acquisition of earth electrode than the better grounding characteristics of black earth electrode so it is doubly a lot of that its earth electrode internal resistance is descended than isometric graphite earth electrode internal resistance.As bury metallic graphite carbon earth electrode actual measurement earth resistance underground at loess zone is below 5 ohm, drops to 3.7-4.3 ohm through the two weeks operation, and characteristic is stable with a slight decline.150 * 0.8 meters graphite earth electrodes of φ (its earth resistance is 6.2-7.2 ohm) are much better than burying underground in the same soil.When installing and using,, when an earth electrode can not be satisfied the demand, can bury multipole earth electrode more than two underground according to on-the-spot circumstance.
Claims (3)
1, a kind of metallic graphite carbon earth electrode, comprise graphite body and assemble its interior metal cartridge and cable tail, it is characterized in that metal cartridge utilizes glue cast stone China ink to be encapsulated in the graphite body perimeter trench, cylinder one end extends transversely into respectively in the graphite body deep hole and pegs graft with the tining heart yearn of cable tail, and be integral with lead-containing alloy perfusion, the other end joins in twos with metal cartridge.
2, earth electrode according to claim 1 is characterized in that the graphite body profile is cylinder, prism or flat cylinder.
3, earth electrode according to claim 1 is characterized in that metal cartridge is solid or hollow cylindrical body, and its profile is cylinder, prism or flat cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253497 CN2454912Y (en) | 2000-12-19 | 2000-12-19 | Metal-graphite carthing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253497 CN2454912Y (en) | 2000-12-19 | 2000-12-19 | Metal-graphite carthing body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2454912Y true CN2454912Y (en) | 2001-10-17 |
Family
ID=33610940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00253497 Expired - Fee Related CN2454912Y (en) | 2000-12-19 | 2000-12-19 | Metal-graphite carthing body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2454912Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552591A (en) * | 2015-08-07 | 2016-05-04 | 仲杏英 | Lightning arrester earthing device with characteristic of easy maintenance |
-
2000
- 2000-12-19 CN CN 00253497 patent/CN2454912Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552591A (en) * | 2015-08-07 | 2016-05-04 | 仲杏英 | Lightning arrester earthing device with characteristic of easy maintenance |
| CN105552591B (en) * | 2015-08-07 | 2017-10-27 | 国电联合动力技术有限公司 | Easy care earthing of lightening arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |