CN201051639Y - Lightning prevention winding device for high voltage transmission cable - Google Patents
Lightning prevention winding device for high voltage transmission cable Download PDFInfo
- Publication number
- CN201051639Y CN201051639Y CNU2007201485043U CN200720148504U CN201051639Y CN 201051639 Y CN201051639 Y CN 201051639Y CN U2007201485043 U CNU2007201485043 U CN U2007201485043U CN 200720148504 U CN200720148504 U CN 200720148504U CN 201051639 Y CN201051639 Y CN 201051639Y
- Authority
- CN
- China
- Prior art keywords
- ground wire
- built
- stilts
- earth wire
- stockbridge damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Elimination Of Static Electricity (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses an anti lightning shielding failure device for a high voltage transmission line, which comprises an overhead protecting earth wire and a vibration-proof hammer on the overhead protecting earth wire, the upper portion of the overhead protecting earth wire is provided with a conductivity equalizer ring. The flat surface of the conductivity equalizer ring is parallel with the overhead protecting earth wire, which is downwards connected with the vibration-proof hammer through a conductivity support bar, and the vibration-proof hammer is fixed on the overhead protecting earth wire through a fastener, and a rubber insulating backing strip is arranged between the vibration-proof hammer and the overhead protecting earth wire. The utility model has the advantages of simple structure and low production cost, which can prevent a directing line from galloping, and can lower lightning shielding failure probability in lightning stroking.
Description
Technical field
The utility model relates to a kind of anti-thunder and lightning shielding device that is used for ultra-high-tension power transmission line.
Background technology
Though the built on stilts protection ground wire of lightning protection purposes is all arranged above through-flow lead on the high pressure overhead power line, but still often take place thunder and lightning walk around the protection ground wire hit through-flow lead, cause the phenomenon of line short and transformer station's afferent echo.Tracing it to its cause is because overhead ground wire is too thin, and when thundercloud was close, corona discharge produced a large amount of reversed polarity space charges in advance; These space charges are in the overhead accumulation of ground wire, and the descending lightning current that has hindered the thundercloud generation is to overhead ground wire development discharge; Produced the phenomenon that has had overhead ground wire lead still to occur being struck by lightning.In addition, the single lead that prevents also is housed on the ground wire waves the stockbridge damper of function, how it being used or improving, make it to be installed in the thunderbolt risk of shielding failure in the time of can preventing on the overhead ground wire of transmission line that conductor galloping from can reduce to be struck by lightning again, is the problem that those skilled in the art need solution badly.
The utility model content
At the problems referred to above, the purpose of this utility model be to provide a kind of simple in structure, cost is low and the anti-thunder and lightning shielding device of the thunderbolt risk of shielding failure can prevent that conductor galloping from can reduce to be struck by lightning again the time.
For achieving the above object; the technical solution adopted in the utility model is: a kind of anti-thunderbolt device that is used for ultra-high-tension power transmission line; comprise built on stilts protection ground wire and be installed on the built on stilts stockbridge damper of protecting ground wire; above built on stilts protection ground wire, be provided with the conduction grading ring; described conduction grading ring plane parallel is connected in described stockbridge damper downwards in described built on stilts protection ground wire and by the conductive supporting bar; stockbridge damper is fixed in built on stilts protection ground wire by securing member, also is provided with the rubber-covered liner between stockbridge damper and built on stilts protection ground wire.
Described conduction grading ring is made by light-weight metal, is shaped as circle, rectangle or oblong or long S type.
The beneficial effects of the utility model are: because the rubber-covered liner except the prevention stockbridge damper slides, also has a function that forms a discharging gap between stockbridge damper and earth lead on earth lead.The utility model utilizes the requirement that mostly needs to install stockbridge damper on the overhead transmission line overhead ground wire, in the design of stockbridge damper, do improvement, not only satisfy former functional requirement, also greatly reduce near the conductive line surfaces electric field strength in the several meters mounting points, reduced thundercloud near the time, the thinner ground wire of diameter because corona to the reversed polarity electric charge of airborne release; Reduce the shielding probability of thunder and lightning.Gap between stockbridge damper and the lead punctures after energy storage when discharging simultaneously, also can initiatively produce up ion flow, brings out thunder and lightning and hits to this anti-thunder and lightning shielding device.
Description of drawings
Fig. 1 is the structural representation of anti-thunder and lightning shielding device of the present utility model.
Among the figure
1. stockbridge damper 2. conduction grading rings 3. rubber-covered liners 4. are maked somebody a mere figurehead the protection ground wires
5. securing member 6. conductive supporting bars
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described in further detail.
Embodiment:
Referring to Fig. 1; the utility model is used for the anti-thunderbolt device of ultra-high-tension power transmission line; comprise built on stilts protection ground wire 4 and be installed on the built on stilts stockbridge damper 1 of protecting ground wire 4; above built on stilts protection ground wire 4, be provided with conduction grading ring 2; described conduction grading ring 2 plane parallel are connected in described stockbridge damper 1 downwards in described built on stilts protection ground wire 4 and by conductive supporting bar 6; stockbridge damper 1 is fixed in built on stilts protection ground wire 4 by securing member 5, also is provided with rubber-covered liner 3 between stockbridge damper 1 and built on stilts protection ground wire 4.
Described conduction grading ring 2 can be made by light-weight metal such as thin-wall aluminium pipe, is shaped as circle, rectangle or oblong or long S type.
In the present embodiment, the conduction grading ring 2 S shape that is designed to grow up forms with thin-wall aluminium pipe bending shaping, and its weight far is lighter than stockbridge damper 1, and the grading ring 2 of can guaranteeing to conduct electricity remains at built on stilts protection ground wire 4 tops.
The clearance for insulation that forms by rubber-covered liner 3 and stockbridge damper 1 and built on stilts protection ground wire 4 stored energy gradually in the thundercloud electric field, promptly the potential difference of the built on stilts relatively protection ground wire 4 of stockbridge damper 1 can rising gradually in electric field; The rising of this current potential can have influence on the surface field intensity of contiguous earth lead, makes it to reduce, and reduces the generation of corona, and then reduces to aerial reversed charge discharging.When the potential rise height surpassed the tolerance level of clearance for insulation, clearance for insulation can puncture; The current potential of conduction grading ring 2 sports zero by high potential, and the surface field intensity of its top increases suddenly; If field intensity is higher than air breakdown field intensity 30kV/cm, conduction grading ring 2 will produce a up ion flow, flows to thundercloud, initiatively forms up lightning current.This up lightning current is equivalent to and will moves on the protection ground wire, and equivalence has increased the protection area, has reduced the thunderbolt rate.
With way of example the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment the protection range that all any improvement done based on the utility model or modification all belong to the utility model claim.
Claims (2)
1. anti-thunderbolt device that is used for ultra-high-tension power transmission line; comprise built on stilts protection ground wire and be installed on the built on stilts stockbridge damper of protecting ground wire; it is characterized in that: above built on stilts protection ground wire, be provided with the conduction grading ring; described conduction grading ring plane parallel is connected in described stockbridge damper downwards in described built on stilts protection ground wire and by the conductive supporting bar; stockbridge damper is fixed in built on stilts protection ground wire by securing member, also is provided with the rubber-covered liner between stockbridge damper and built on stilts protection ground wire.
2. according to the described anti-thunderbolt device that is used for ultra-high-tension power transmission line of claim 1, it is characterized in that: described conduction grading ring is made by light-weight metal, is shaped as circle, rectangle or oblong or long S type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201485043U CN201051639Y (en) | 2007-04-27 | 2007-04-27 | Lightning prevention winding device for high voltage transmission cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201485043U CN201051639Y (en) | 2007-04-27 | 2007-04-27 | Lightning prevention winding device for high voltage transmission cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051639Y true CN201051639Y (en) | 2008-04-23 |
Family
ID=39338132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201485043U Expired - Fee Related CN201051639Y (en) | 2007-04-27 | 2007-04-27 | Lightning prevention winding device for high voltage transmission cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051639Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743014A (en) * | 2016-03-28 | 2016-07-06 | 国家电网公司 | Wire distracting and locking device for electrified vertical pole |
| CN111049091A (en) * | 2019-12-13 | 2020-04-21 | 马鞍山圣德力智能科技有限公司 | Flashover prevention device for high-voltage transmission line |
-
2007
- 2007-04-27 CN CNU2007201485043U patent/CN201051639Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743014A (en) * | 2016-03-28 | 2016-07-06 | 国家电网公司 | Wire distracting and locking device for electrified vertical pole |
| CN111049091A (en) * | 2019-12-13 | 2020-04-21 | 马鞍山圣德力智能科技有限公司 | Flashover prevention device for high-voltage transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20130427 |