CN202977748U - Maintenance-free earthing device - Google Patents
Maintenance-free earthing device Download PDFInfo
- Publication number
- CN202977748U CN202977748U CN 201220640389 CN201220640389U CN202977748U CN 202977748 U CN202977748 U CN 202977748U CN 201220640389 CN201220640389 CN 201220640389 CN 201220640389 U CN201220640389 U CN 201220640389U CN 202977748 U CN202977748 U CN 202977748U
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- earthing
- metal
- earth electrode
- corrosion
- material layer
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Abstract
The utility model relates to an earthing device. The maintenance-free earthing device comprises 4-8 earthing poles (1) horizontally arranged or vertically buried underground, the earthing poles are mutually connected with metal earthing down conductors (2) and horizontal metal erathing bodies (2) to form a metal earthing ring net, the earthing pole comprises a metal earthing body (4) and an anti-corrosion conductive resistance reducing material layer (5), the anti-corrosion conductive resistance reducing material layer (5) is 30-45 mm in thickness, an using amount of the anti-corrosion conductive resistance reducing material wrapped on an outer surface of each meter of the metal earthing body (4) is 6-8 kg, and the metal earthing down conductors (2), the horizontal metal earthing bodies (3) and the metal earthing bodies (4) are mutually welded. The maintenance-free earthing device solves a problem of easy corrosiveness of steel earthing body of the earthing device, and a new approach is developed for solving the corrosion resisting problem of the earthing device. The conductive resistance reducing material wrapped outside the steel earthing body not only can reduce earthing resistance, but also is provided with water-resisting, oxygen resisting and sealing properties.
Description
Technical field
The utility model relates to a kind of earthing device, particularly relates to a kind of earth device without maintenance.
Background technology
The good earth of power equipment is one important safety barrier of power equipment safety operation.Earthing device is imbedded underground operation, service conditions is abominable, perishable area, will be earthing device steel earth electrode corrosion in several years dressed in rags, can only again transform, cause thus the significant wastage of manpower and materials not say, importantly affect the normal stable operation of power equipment, this causes serious economic loss and brings various potential safety hazards may for undoubtedly factory, enterprise or other electricity consumptions departments.
And the etching problem of steel is the natural phenomenas that can't fundamentally avoid, is the technical problem that is difficult to capture, and is also the challenging key subjects that are worth research.The meeting that steel in the steel earth electrode are difficult to avoid contains impurity, and its surperficial inhomogeneities contacts with atmosphere or soil environment and will produce potential difference like this, forms numerous minute corrosive cells.Although it is fixed that earth electrode is imbedded underground, and electrolyte oxidation agent solution (depolarizing agent) under certain condition, and limited movement can occur, the interaction of this movement and earth electrode metal is the main cause that produces electrochemical corrosion.
Hence one can see that, reduces as much as possible the phenomenon of earthing device steel earth electrode corrosion, for playing very important impact the useful life of earthing device.This is for normal temperature operation that ensures power equipment, and the waste that reduces manpower and materials is the key link very.
Summary of the invention
The utility model is not enough for prior art, proposes a kind of earth device without maintenance, can effectively solve the corrosion-prone problem of earthing device steel earth electrode.
The technical scheme that the utility model adopts:
a kind of earth device without maintenance, comprise 4～8 horizontal arrangement or vertically be embedded in underground earth electrode (1), described earth electrode (1) is interconnected to form metal ground connection looped network by metal down conductor (2) and horizontal metal earth electrode (3), described earth electrode (1) comprises metal earth electrode (4) and without corrosion conduction resistance-lowering material layer (5), described thickness without corrosion conduction resistance-lowering material layer (5) is 30～45mm, the nothing corrosion conduction resistance-lowering material consumption of every meter metal earth electrode (4) outer surface parcel is 6～8kg, described metal down conductor (2) and horizontal metal earth electrode (3) and metal earth electrode (4) are welded to each other.
Described earth device without maintenance, horizontal metal earth electrode (3) outer surface also is provided with without corrosion conduction resistance-lowering material layer, after preservative treatment is carried out in horizontal metal earth electrode (3) and metal earth electrode (4) junction, adopt without corrosion conduction resistance-lowering material layer parcel.
Described earth device without maintenance, metal down conductor (2) adopt the heat-shrink tube conservation treatment, after preservative treatment is carried out in metal down conductor (2) and horizontal metal earth electrode (3) junction, adopt without corrosion conduction resistance-lowering material layer and wrap up.
Useful good effect of the present utility model:
1, the utility model earth device without maintenance has solved the corrosion-prone problem of earthing device steel earth electrode, for the corrosion-resistant problem that solves earthing device has been opened up new approach.The conduction resistance-lowering material of steel earth electrode outer wrapping not only can reduce earth resistance, and has water proof, oxygen barrier, airtight performance.
2, the utility model earth device without maintenance, downlead adopts the airtight rear use of heat-shrink tube, has effectively protected downlead to avoid its direct ingress of air or soil to be corroded, and has further strengthened the whole structure of earthing device.Earth device without maintenance can make the facility operations such as electric power, oil, communication, railway, national defence stable, and is safe and reliable in life cycle management.
Description of drawings
Fig. 1: vertically bury the earthing device schematic diagram underground;
Fig. 2: vertically bury the earthing device floor plan underground;
Fig. 3: a section's enlarged drawing (vertical grounding electrode cutaway view) in Fig. 1.
Embodiment
embodiment one: referring to Fig. 1～Fig. 3, the utility model earth device without maintenance, comprise that 4～8 vertically are embedded in underground earth electrode 1, described earth electrode 1 is interconnected to form metal ground connection looped network by metal down conductor 2 and horizontal metal earth electrode 3, described earth electrode 1 comprises metal earth electrode 4 and without corrosion conduction resistance-lowering material layer 5, thickness without corrosion conduction resistance-lowering material layer 5 is 30-45mm, the nothing corrosion conduction resistance-lowering material consumption of the outer surface parcel of every meter metal earth electrode is 6-8kg, described metal down conductor 2 and horizontal metal earth electrode 3 and metal earth electrode 4 are welded to each other.In Fig. 3, numbering 6 is the backfill fine earth.
Belong to a kind of electron conduction material without corrosion conduction resistance-lowering material, its conductive characteristic is stable, and not being subjected to do any harsh weather such as wet, cold affects, suitable to arid, extra-high-speed cold area use, has water proof, oxygen barrier, airtight characteristic.Can make electrolyte oxygen agent solution (depolarizing agent) can't be displaced to the steel earth electrode, can't interact with steel earth electrode minute corrosive cell, thereby avoid the generation of electrochemical corrosion.
Embodiment two: referring to Fig. 1～Fig. 3, the earth device without maintenance of the present embodiment, what they were different from embodiment one is: further, also be provided with without corrosion conduction resistance-lowering material layer at horizontal metal earth electrode 3 outer surfaces, after preservative treatment is carried out in horizontal metal earth electrode 3 and metal earth electrode 4 junctions, adopt without corrosion conduction resistance-lowering material layer parcel.
Embodiment three: referring to Fig. 1～Fig. 3; the earth device without maintenance of the present embodiment; what they were different from embodiment one or embodiment two is: metal down conductor 2 adopts the heat-shrink tube conservation treatment; after preservative treatment is carried out in metal down conductor 2 and horizontal metal earth electrode 3 junctions, adopt without corrosion conduction resistance-lowering material layer parcel.
Embodiment four: the earth device without maintenance of the present embodiment, different from aforementioned each embodiment is, comprise that 4～8 are arranged vertically (or horizontal arrangement) and are embedded in underground earth electrode, described earth electrode is interconnected to form metal ground connection looped network (or horizontal arrangement becomes windmill shape radiation ground network) by metal down conductor and horizontal metal earth electrode, and described earth electrode is by the metal earth electrode and be wrapped in consisting of without corrosion conduction resistance-lowering material layer of metal earth electrode outer surface.Preservative treatment is carried out in horizontal metal earth electrode and metal down conductor junction, and the horizontal metal earth electrode also adopts without corrosion conduction resistance-lowering material layer parcel.
Claims (3)
1. earth device without maintenance, comprise 4～8 horizontal arrangement or vertically be embedded in underground earth electrode (1), described earth electrode (1) is interconnected to form metal ground connection looped network by metal down conductor (2) and horizontal metal earth electrode (3), it is characterized in that: described earth electrode (1) comprises metal earth electrode (4) and without corrosion conduction resistance-lowering material layer (5), described thickness without corrosion conduction resistance-lowering material layer (5) is 30～45mm, the nothing corrosion conduction resistance-lowering material consumption of every meter metal earth electrode (4) outer surface parcel is 6～8kg, described metal down conductor (2) and horizontal metal earth electrode (3) and metal earth electrode (4) are welded to each other.
2. earth device without maintenance according to claim 1, it is characterized in that: horizontal metal earth electrode (3) outer surface also is provided with without corrosion conduction resistance-lowering material layer, after preservative treatment is carried out in horizontal metal earth electrode (3) and metal earth electrode (4) junction, adopt without corrosion conduction resistance-lowering material layer parcel.
3. earth device without maintenance according to claim 1 and 2; it is characterized in that: metal down conductor (2) adopts the heat-shrink tube conservation treatment; after preservative treatment is carried out in metal down conductor (2) and horizontal metal earth electrode (3) junction, adopt without corrosion conduction resistance-lowering material layer parcel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640389 CN202977748U (en) | 2012-11-29 | 2012-11-29 | Maintenance-free earthing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640389 CN202977748U (en) | 2012-11-29 | 2012-11-29 | Maintenance-free earthing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977748U true CN202977748U (en) | 2013-06-05 |
Family
ID=48518782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220640389 Expired - Fee Related CN202977748U (en) | 2012-11-29 | 2012-11-29 | Maintenance-free earthing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239079A (en) * | 2015-10-20 | 2016-01-13 | 国网江西省电力科学研究院 | Down conductor cathode protection and corrosion prevention method |
-
2012
- 2012-11-29 CN CN 201220640389 patent/CN202977748U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239079A (en) * | 2015-10-20 | 2016-01-13 | 国网江西省电力科学研究院 | Down conductor cathode protection and corrosion prevention method |
| CN105239079B (en) * | 2015-10-20 | 2018-07-27 | 国网江西省电力有限公司电力科学研究院 | A kind of down conductor cathodic protection anti-corrosion method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151129 |