CN202443809U - Insulator for preventing lightning disconnection - Google Patents
Insulator for preventing lightning disconnection Download PDFInfo
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- CN202443809U CN202443809U CN2012200927127U CN201220092712U CN202443809U CN 202443809 U CN202443809 U CN 202443809U CN 2012200927127 U CN2012200927127 U CN 2012200927127U CN 201220092712 U CN201220092712 U CN 201220092712U CN 202443809 U CN202443809 U CN 202443809U
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- insulator
- strikes
- lightning protection
- lightning
- hardware fittings
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Abstract
The utility model discloses an insulator for preventing lightning disconnection. The insulator comprises a porcelain insulator and a cross arm, wherein the end of the porcelain insulator is additionally provided with hardware fittings for preventing the lightning disconnection; the hardware fittings and the cross arm form a lightning impulse discharge gap; the hardware fittings are aluminum alloy hardware fittings made of a high-strength aluminum alloy material; an insulation conducting wire at the end of the insulator is provided with an insulating opening which is used for making short-circuit current flow from the conducting wire to the hardware fittings; and the insulating opening is provided with an insulating cover which is used for discharging to the cross arm and is provided with a lower opening. According to the insulator, the aluminum alloy hardware fittings for preventing the lightning disconnection is additionally arranged at the end of the original porcelain insulator of a circuit and can prevent magnetic retardation and eddy current loss; lightning impulse discharging and power frequency electric arc combustion gaps are formed by the hardware fittings and the cross arm, so that lightning impulse discharge paths are positioned; the hardware fittings enclose the conducting wire to form a thick protective component, power frequency electric arc roots can be conducted, and heat dissipation is facilitated; and the electric arc is combusted between the thick places of the aluminum alloy hardware fittings during flashover, so that the insulator has an effect of further protecting the insulation conducting wire from being damaged.
Description
Technical field
The utility model relates to a kind of electric power system overhead distribution device, and particularly a kind of lightning protection strikes off the line insulator.
Background technology
The insulated conductor of China's big or middle city 10kV distribution line employing at present is more and more many as overhead distribution; The overhead distribution insulated wire has than bare wire and reduces significantly because of the external force accident; The power outage that causes lead collision and insulator breakdown to cause has improved power supply reliability greatly and has reduced the line upkeep workload.Insoluble corridor of plain conductor and safety problem have been solved effectively; Compare with underground cable and to have reduced investment, build fast advantage; Because above advantage, as far back as the beginning of the fifties, just begin one's study aerial insulated wire and replace built on stilts plain conductor of France with this insulated wire.China brings into use aerial insulated wire from the eighties, and has obtained good economic benefit and social benefit.
But also brought some new technical problems, one of them is exactly the lightning-caused breaking that insulated conductor is in operation, and the lightning-caused breaking problem is very outstanding, and the thunderbolt tolerance of insulated conductor has been compared obviously different with plain conductor.When direct lightning strike or lightning induced voltage acted on plain conductor and cause insulator arc-over, the power frequency short circuit current that continues moved to deviating from the power supply direction along lead under electrodynamic effect, can the serious burn lead.Insulated conductor is then different; Lightning Over-voltage at first punctures wire insulation and plays insulator arc-over, and breakdown insulating barrier is a pin hole shape, the power frequency short circuit current electric arc that the continues obstruction that receives to insulate on every side; The arc root can only burn at the pin hole place, will be blown at extremely short time inside conductor.
Some countries of extensive use suspended insulated guide wire have adopted different lightning protection to strike off the line measure according to above-mentioned lightning-caused breaking principle respectively with operating experience in the world, can reduce " stop up and dredge " dual mode.So-called " obstruction " mode, its core is exactly to improve the insulation level of circuit as far as possible, reduces insulation lightning stroke flashover probability, reduces the power frequency continued flow probability of sustained arc.The mode protection effect of " obstruction " is good, but investment is big.So-called " dredging " mode allows circuit that certain lightning stroke flashover rate is arranged exactly, but will the power frequency arc arc root behind the lightning stroke flashover be dredged, and makes it the lead of not burning.The mode of " dredging " is simple in structure, small investment, and the lightning protection of our company's exploitation strikes off the line insulator and just belongs to " dredging " mode.
Therefore need a kind of lightning impulse discharge path of locating to strike off the line insulator with the lightning protection of dredging power frequency arc arc root.
The utility model content
In view of this, the utility model technical problem to be solved provides a kind of lightning impulse discharge path of locating and strikes off the line insulator with the lightning protection of dredging power frequency arc arc root.
The utility model is realized through following technical scheme:
The lightning protection that the utility model provides strikes off the line insulator, comprises porcelain insulator and cross-arm, and said porcelain insulator end installs additional and is used for the gold utensil that lightning protection strikes off line, and said gold utensil and cross-arm constitute the lightning impulse discharging gap.
Further, said gold utensil comprises location arcing ring and drainage briquetting, and said location arcing ring is sheathed on porcelain insulator one end, and said drainage briquetting is arranged on the arcing ring of location.
Further, also comprise the adjusting bolt, said location arcing ring and drainage briquetting are arranged on the porcelain insulator through regulating bolt.
Further, said gold utensil is the aluminium alloy gold utensil of being made by high-strength aluminum alloy material.
Further, the insulated conductor of said insulator end offers and is used to make short circuit current to flow to the insulated openings of gold utensil from lead, and said insulated openings is provided with the insulating cover that is used for to the lower openings of cross-arm discharge.
Further, said insulating cover is for adopting the molded insulating cover of silicon rubber mould.
Further, twine layer of metal on the insulated conductor skin of said insulator end and protect lines.
Further, said metal protects the length that lines are and is not shorter than one meter metal wire.
The beneficial effect of the utility model is: the utility model is used original porcelain insulator of circuit and circuit cross-arm; Install lightning protection additional in the original porcelain insulator of circuit end and strike off the wire aluminium alloy gold utensil; Can prevent magnetic hysteresis, eddy current loss; Aluminium alloy gold utensil that installs additional and the original iron cross arm of circuit have constituted the lightning impulse discharge and power frequency arc fires around the gap, and it has location lightning impulse discharge path; Because the aluminium alloy gold utensil that installs additional is abundant high-strength aluminum alloy parts; Through this gold utensil lead is centered on the abundant guard block of formation; Can dredge power frequency arc arc root and help heat radiation; During flashover, electric arc burns between the abundant position at the aluminium alloy gold utensil, has further played the effect that the protection insulated conductor is avoided damaging.
Other advantages, target and the characteristic of the utility model will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from the practice of the utility model, obtain instruction to investigating of hereinafter.The target of the utility model and other advantages can realize and obtain through following specification and claims.
Description of drawings
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
The lightning protection that Fig. 1 provides for the utility model embodiment strikes off line insulator structure figure.
Among the figure, bolt is regulated in 1 expression porcelain insulator, 2 expression location arcing rings, 3 expression drainage briquettings, 4 expressions.
Embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.Should be appreciated that preferred embodiment has been merely explanation the utility model, rather than in order to limit the protection range of the utility model.
The lightning protection that Fig. 1 provides for the utility model embodiment strikes off line insulator structure figure; This device is mainly used on the ultra-high-tension power transmission line of 10KV; As shown in the figure: the lightning protection that the utility model provides strikes off the line insulator; Comprise porcelain insulator 1, cross-arm and adjusting bolt, porcelain insulator 1 end installs additional and is used for the gold utensil that lightning protection strikes off line, and gold utensil and cross-arm constitute the lightning impulse discharging gap.Said gold utensil comprises location arcing ring 2 and drainage briquetting 3, and striking 2 ring sets in said location are located at porcelain insulator 1 one ends, and said drainage briquetting 3 is arranged on the arcing ring 2 of location.Said location arcing ring 2 is arranged on the porcelain insulator 1 through regulating bolt 4 with drainage briquetting 3.Gold utensil is the aluminium alloy gold utensil of being made by high-strength aluminum alloy material.The insulated conductor of insulator end offers and is used to make short circuit current to flow to the insulated openings of gold utensil from lead, and said insulated openings is provided with the insulating cover that is used for to the lower openings of cross-arm discharge.Insulating cover is for adopting the molded insulating cover of silicon rubber mould.Twine layer of metal on the insulated conductor skin of insulator end and protect lines.Metal protects the length that lines are and is not shorter than one meter metal wire, and also can select length is 10 meters, 20 meters plain conductor.
Suspended insulated guide wire lightning protection thunderbolt device, it mainly acts on and being: the capacitor discharge effect that 1) forms by means of special gold utensil reduces thunderbolt intensity; 2) through the protection type gold utensil lead is centered on the abundant guard block of formation, to prevent the incendiary effect of short circuiting arc root.During flashover, electric arc burns between the abundant position of protection type gold utensil, and makes lead avoid damage.
When the installation lightning protection strikes off the line insulator; Earlier lead is carried out proper process, near the lead the porcelain insulator end is carried out local peeling handle, making short circuit current flow to the protection type gold utensil from lead needs insulated conductor is carried out the peeling processing; Intake for preventing the insulated conductor core after the peeling; And behind insulated conductor location, install the insulating cover of a lower openings additional, and its underpart opening is mainly used in to the iron cross arm discharge, and insulating cover adopts silicon rubber mould molded.
Lightning protection strikes off line apparatus and releases energy through high voltage discharge electrode and low-field electrode; This device by means of iron cross arm as the low pressure discharge electrode; Constitute discharging gap because discharge path is the shortest between additional gold utensil in insulator end and iron cross arm as previously mentioned, had the effect of guiding lightning impulse discharge path.So the low pressure discharge electrode of this device has lain among the circuit iron cross arm, does not need to install in addition the earth electrode of dominance.Because refill the earth electrode of establishing dominance in the case the insulation level of circuit is decreased, thereby cause that lightning outage rate rises to some extent.
It is significant with reduction line over-voltage level for rapid release lightning current energy that the line-to-ground body is installed the good earth connection of ground connection; But with regard to this lightning protection struck off line apparatus, whether to strike off the performance relation of line apparatus effect little with this lightning protection in the installation of earth connection.So only need install earth connection, and needn't install earth connection in addition additional for this device by the original design of this circuit.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although the preferred embodiment through with reference to the utility model is described the utility model; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and the scope of the utility model that does not depart from appended claims and limited.
Claims (8)
1. lightning protection strikes off the line insulator, comprises porcelain insulator and cross-arm, it is characterized in that: said porcelain insulator end installs additional and is used for the gold utensil that lightning protection strikes off line, and said gold utensil and cross-arm constitute the lightning impulse discharging gap.
2. lightning protection according to claim 1 strikes off the line insulator, it is characterized in that: said gold utensil comprises location arcing ring and drainage briquetting, and said location arcing ring is sheathed on porcelain insulator one end, and said drainage briquetting is arranged on the arcing ring of location.
3. lightning protection according to claim 2 strikes off the line insulator, it is characterized in that: also comprise the adjusting bolt, said location arcing ring and drainage briquetting are arranged on the porcelain insulator through regulating bolt.
4. lightning protection according to claim 3 strikes off the line insulator, it is characterized in that: the aluminium alloy gold utensil of said gold utensil for being made by high-strength aluminum alloy material.
5. lightning protection according to claim 4 strikes off the line insulator; It is characterized in that: the insulated conductor of said insulator end offers and is used to make short circuit current to flow to the insulated openings of gold utensil from lead, and said insulated openings is provided with the insulating cover that is used for to the lower openings of cross-arm discharge.
6. lightning protection according to claim 5 strikes off the line insulator, it is characterized in that: said insulating cover is for adopting the molded insulating cover of silicon rubber mould.
7. lightning protection according to claim 6 strikes off the line insulator, it is characterized in that: twine layer of metal on the insulated conductor skin of said insulator end and protect lines.
8. lightning protection according to claim 7 strikes off the line insulator, it is characterized in that: said metal protects the length that lines are and is not shorter than one meter metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200927127U CN202443809U (en) | 2012-03-13 | 2012-03-13 | Insulator for preventing lightning disconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200927127U CN202443809U (en) | 2012-03-13 | 2012-03-13 | Insulator for preventing lightning disconnection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202443809U true CN202443809U (en) | 2012-09-19 |
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ID=46825245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200927127U Expired - Lifetime CN202443809U (en) | 2012-03-13 | 2012-03-13 | Insulator for preventing lightning disconnection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202443809U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390978A (en) * | 2015-11-11 | 2016-03-09 | 国家电网公司 | Lightning-caused breakage preventing method for insulated overhead line |
| CN107359023A (en) * | 2017-08-26 | 2017-11-17 | 苏州灵亿易电子科技有限公司 | The lightning protection pillar insulator of built-in discharging gap |
| CN107369506A (en) * | 2017-08-26 | 2017-11-21 | 苏州灵亿易电子科技有限公司 | A kind of lightning protection pillar insulator of built-in discharging gap |
| CN109801763A (en) * | 2019-03-14 | 2019-05-24 | 中安达电气科技股份有限公司 | Line pole type composite insulator and line pole type compound inslation subsystem |
| CN114334306A (en) * | 2020-10-09 | 2022-04-12 | 西安西电高压开关有限责任公司 | Insulator assembly |
-
2012
- 2012-03-13 CN CN2012200927127U patent/CN202443809U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390978A (en) * | 2015-11-11 | 2016-03-09 | 国家电网公司 | Lightning-caused breakage preventing method for insulated overhead line |
| CN105390978B (en) * | 2015-11-11 | 2018-06-22 | 国家电网公司 | The anti-lightning strike broken string method of insulated over-head line |
| CN107359023A (en) * | 2017-08-26 | 2017-11-17 | 苏州灵亿易电子科技有限公司 | The lightning protection pillar insulator of built-in discharging gap |
| CN107369506A (en) * | 2017-08-26 | 2017-11-21 | 苏州灵亿易电子科技有限公司 | A kind of lightning protection pillar insulator of built-in discharging gap |
| CN109801763A (en) * | 2019-03-14 | 2019-05-24 | 中安达电气科技股份有限公司 | Line pole type composite insulator and line pole type compound inslation subsystem |
| CN114334306A (en) * | 2020-10-09 | 2022-04-12 | 西安西电高压开关有限责任公司 | Insulator assembly |
| CN114334306B (en) * | 2020-10-09 | 2024-01-26 | 西安西电高压开关有限责任公司 | Insulator assembly |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |