CN202772276U - Pole-tower lightning protection grounding device - Google Patents
Pole-tower lightning protection grounding device Download PDFInfo
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- CN202772276U CN202772276U CN201220452648.9U CN201220452648U CN202772276U CN 202772276 U CN202772276 U CN 202772276U CN 201220452648 U CN201220452648 U CN 201220452648U CN 202772276 U CN202772276 U CN 202772276U
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- grounding
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- horizontal grounding
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Abstract
The utility model discloses a pole-tower lightning protection grounding device. The pole-tower lightning protection grounding device comprises a metal ring which is laid around pole-tower legs and connected with the pole-tower legs, wherein at least two horizontal grounding bodies extending outside are welded on the metal ring, the metal ring and the horizontal grounding bodies are laid in a ground groove, the horizontal grounding bodies are fixedly connected with at least one grounding module, and the grounding modules and the horizontal grounding bodies are on the same plane. According to the pole-tower lightning protection grounding device, space around the pole-tower legs is fully used for laying the horizontal grounding bodies, and the horizontal grounding bodies are connected with the grounding modules, so the pole-tower lightning protection grounding device can effectively reduce grounding resistance, has a simple structure and has relatively high use values.
Description
Technical field
The utility model relates to a kind of earthing device for the shaft tower lightning protection.
Background technology
The lightning protection of overhead transmission line shaft tower is most important to the safe and stable operation of Circuits System, and tower grounding is important measures of shaft tower lightning protection, reduces pole tower ground resistance and can improve the lightning withstand level of circuit and reduce lightning outage rate.Existing tower grounding device mostly adopts at each shaft tower tower leg independent little square metal ring is set, and it is rectangular as earth electrode to add common round steel.The earth electrode that this design needs in common situation is longer, and ground groove excavation length is long, and quantities is large; In the area of high soil resistivity or be subjected to often to be difficult to reach the requirement of reducing ground resistance in the situation of landform restriction, result of use is relatively poor.
Summary of the invention
For solving the deficiencies in the prior art, the utility model provides a kind of can effectively reduce pole tower ground resistance, earthing device simple in structure.
The utility model technical scheme that adopts of dealing with problems is:
A kind of shaft tower grounding-for-lightning device, comprise and be laid on around the shaft tower tower leg and the becket that is connected with tower leg, be welded with at least 2 on the described becket toward the horizontal grounding objects of extension, described becket and horizontal grounding objects are laid in the ground groove, be fixedly connected with at least 1 earthing module on the horizontal grounding objects, described earthing module and horizontal grounding objects are on the same level face.Take full advantage of tower leg space on every side and lay horizontal grounding objects, and connect earthing module at horizontal grounding objects, effectively reducing ground resistance.
Further, earthing module is evenly arranged in the both sides of horizontal grounding objects, and adjacent earthing module installation direction is opposite, guarantees that earthing module can effectively utilize the space of horizontal grounding objects both sides, reduces resistance.
Further, described earthing module is connected on the horizontal grounding objects by two-sided full weld, and weld is coated with anticorrosive coat.Guarantee satisfactory electrical conductivity between earthing module and the horizontal grounding objects by two-sided full weld, anticorrosive coating can avoid weld corrosion to occur too early, affects conductive effect.
Further, landfill has one deck fine earth or synergist around the described earthing module.The landfill fine earth guarantees effectively to conduct electricity between earthing module and the soil; Soil resistivity greater than the situation more than the 5000 Ω cm under, use synergist to guarantee giving full play to of earthing module effect.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged diagram at Figure 1A place.
Embodiment
See figures.1.and.2, a kind of shaft tower grounding-for-lightning device, comprise and be laid on around the shaft tower tower leg 4 and the becket 1 that is connected with tower leg 4, be welded with 4 on the described becket 1 toward the horizontal grounding objects 3 of extension, described becket 1 and horizontal grounding objects 3 are laid in the ground groove, be connected with at least 1 earthing module 2 by two-sided full weld on the horizontal grounding objects 3, weld also is coated with anticorrosive coat, earthing module 2 is evenly arranged in the both sides of horizontal grounding objects 3 and is on the same level face with horizontal grounding objects 3, and adjacent earthing module 2 installation directions are opposite.The quantity of earthing module 2 arranges according to the resistivity of actual soil, earthing module more than 2, and then earth resistance is less.
When laying earthing device, horizontal grounding objects 3 is welded with earthing module 2 every 10 meters, and weld is no less than 100mm along the length of horizontal grounding objects 3 bearing of trends, and preservative treatment is done in the welding position.Earthing module 2 buried depths are no less than 800mm, mountain region or the hills is no less than 600mm, and landfill has one deck fine earth 5 that 5cm is thick at least on every side, and backfill soil is filled in the space between all the other earthing modules 2 and the ground groove.In the situation of soil resistivity greater than 5000 Ω cm, fine earth 5 is changed to synergist, guarantees the performance of earthing module 2 effects.
The above is the better execution mode of the utility model, and it does not consist of the restriction to the utility model protection range, so long as realize that with essentially identical means the purpose of this utility model all should belong to protection range of the present utility model.
Claims (4)
1. shaft tower grounding-for-lightning device, comprise the becket (1) that is laid on shaft tower tower leg (4) on every side and is connected with tower leg (4), be welded with at least 2 on the described becket (1) toward the horizontal grounding objects (3) of extension, described becket (1) and horizontal grounding objects (3) are laid in the ground groove, it is characterized in that: be fixedly connected with at least 1 earthing module (2) on the described horizontal grounding objects (3), described earthing module (2) is on the same level face with horizontal grounding objects (3).
2. a kind of shaft tower grounding-for-lightning device according to claim 1 is characterized in that described earthing module (2) is evenly arranged in the both sides of horizontal grounding objects (3), and adjacent earthing module (2) installation direction is opposite.
3. a kind of shaft tower grounding-for-lightning device according to claim 1 is characterized in that described earthing module (2) is connected on the horizontal grounding objects (3) by two-sided full weld, and weld is coated with anticorrosive coat.
4. a kind of shaft tower grounding-for-lightning device according to claim 1, it is characterized in that described earthing module (2) on every side landfill one deck fine earth (5) or synergist are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220452648.9U CN202772276U (en) | 2012-09-05 | 2012-09-05 | Pole-tower lightning protection grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220452648.9U CN202772276U (en) | 2012-09-05 | 2012-09-05 | Pole-tower lightning protection grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772276U true CN202772276U (en) | 2013-03-06 |
Family
ID=47778825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220452648.9U Expired - Lifetime CN202772276U (en) | 2012-09-05 | 2012-09-05 | Pole-tower lightning protection grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825113A (en) * | 2014-03-17 | 2014-05-28 | 国家电网公司 | Grounding device for high-soil resistivity region |
| CN106451030A (en) * | 2016-12-01 | 2017-02-22 | 国网山西省电力公司大同供电公司 | Device and method for reducing grounding resistance of grounding grid |
-
2012
- 2012-09-05 CN CN201220452648.9U patent/CN202772276U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825113A (en) * | 2014-03-17 | 2014-05-28 | 国家电网公司 | Grounding device for high-soil resistivity region |
| CN106451030A (en) * | 2016-12-01 | 2017-02-22 | 国网山西省电力公司大同供电公司 | Device and method for reducing grounding resistance of grounding grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |