CN201260026Y - Lightning protector with series interval - Google Patents
Lightning protector with series interval Download PDFInfo
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- CN201260026Y CN201260026Y CNU2008201605567U CN200820160556U CN201260026Y CN 201260026 Y CN201260026 Y CN 201260026Y CN U2008201605567 U CNU2008201605567 U CN U2008201605567U CN 200820160556 U CN200820160556 U CN 200820160556U CN 201260026 Y CN201260026 Y CN 201260026Y
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- lightning
- gold utensil
- metal electrode
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- shaped metal
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Abstract
The utility model aims at the shortcomings in the lightning conductor preventing the wire from not being broken by the lightning strike overvoltage; providing a distribution wire lightning protection device, a protecting insulator bunch and a power transformer device by adopting a metal oxide lightning arrester with series gaps and a line insulator which are connected in series or in parallel; the lightning strike resistance level of the circuit is improved, and the lightning strike accident ration is reduced; aiming to different distribution circuit with different insulation level, a customtailored arc inducing metal and the size of the series gaps through strict calculation can ensure the lightning protection device to reach the best lightning-protecting effect.
Description
One, technical field
The utility model belongs to a kind of lightning protection device that is arranged in the medium-voltage distribution circuit, belongs to the lightning arrester technical field.
Two, background technology
In recent years along with the development of process of industrialization, the variation of the variation of weather, particularly local micro climate is very fierce, lightning strike accident frequently takes place, the distribution line broken string accident that causes owing to being struck by lightning is except that direct sabotage of electrical power equipment, also might cause personal injury accident, therefore control the harm of distribution line lightning-caused breaking and have bigger realistic meaning and necessity.
In be press-fitted on the rack ceases to be busy road and produce lightning overvoltage following several types is arranged: (1) thunder is attacked the direct lightning strike overvoltage that circuit causes directly; (2) when thunderbolt during shaft tower, one part of current flows into the earth by shaft tower, and near the shaft tower a part flows to by lightning conducter when shaft tower current potential and lead potential difference during greater than 50% discharge voltage of insulator string, the insulator string flashover will take place; (3) the thunderbolt circuit is neighbouring because the caused induction lightening overvoltage of electromagnetic induction.More than the above insulator arc-over of two-phase that causes of various damage to crops caused by thunder can directly become between the two-phase or short circuit between the three-phase, the power frequency arc afterflow after the short circuit is concentrated, and to be fixed on insulated conductor insulation breakdown place be that smooth combustion is until broken string.Therefore, causing the main reason of circuit lightning-caused breaking promptly is that power frequency continued flow blows line conductor behind the lightning stroke flashover.
Be provided with various device in the present domestic power distribution network and carry out lightning protection; but all do not reach good effect: (1) installs the ground connection lightning conducter: can only be as the supplementary means that prevents induction lightening overvoltage lightning-caused breaking; but the insulation level of medium-voltage distribution circuit is lower; very easily cause the counterattack flashover behind the thunderbolt overhead ground wire; power frequency continued flow still can take place blow the insulated conductor situation, prevent that the effect of lightning-caused breaking is very limited.(2) install lightning protection gold utensil arc leading angle additional: the power frequency arc electric current of the short circuit insulator root of burning in the time of can only temporarily preventing to be struck by lightning can not prevent the insulator surface of burning, the power frequency continued flow of short circuit in the time of can not solving thunderbolt.(3) conventional lightning arrester is installed: the through-current capability of lightning arrester is generally selected the current limiting element of 5kA for use, can play certain lightning protection function for most discharging current less than the induction lightening of 1000A, but lightning current surpasses 20kA mostly when suffering direct lightning strike, and lightning arrester will explode because of through-current capability is not enough this moment; The present domestic lightning arrester that arcing gap arcing below lead is arranged with simple and easy gap, the type product not homophase arcing position is approaching, very might when it moves, cause phase fault, thereby cause damage lead, and the lightning arrester through-current capability deficiency of the type device.(4) other: also have in addition by anti-lead device for fusing being installed, being improved certain methods such as line insulation withstand voltage level and carry out lightning protection, but all owing to a series of reasons such as improvement cost is big, construction complexity are not suitable for the extensive use in China.
By the above as can be known; thunderbolt is very serious for the harm of distribution line, and the present domestic perfect lightning protection device that do not have, the utility model is at above technology vacancy; provide a kind of distribution line anti-lightening protector, to solve the each side harm that the distribution line Lightning Over-voltage is brought.
Three, summary of the invention
Technical problem:
Technical problem to be solved by this invention is: preventing that at existing lightning arrester Lightning Over-voltage from causing the deficiency of effect aspect the broken string accident; adopt band series connection external series gap metal oxide arrester and circuit parallel way to constitute the distribution line lightning protection device; protection circuit and converting equipment; improve the anti-thunderbolt level of circuit, reduce the rate of failure that thunderbolt causes.
Technical scheme:
The utility model is realized with following technical scheme:
A kind of anti-lightening protector with series gap, comprise lightning arrester that has the first bar-shaped metal electrode and the circuit clamping gold utensil that has the second bar-shaped metal electrode, one end of the first bar-shaped metal electrode links to each other with the lightning arrester top, the other end is connected with the first striking gold utensil, one end of the second bar-shaped metal electrode links to each other with circuit clamping gold utensil, the other end is connected with the second striking gold utensil, the arcing contact of the first striking gold utensil is relative with the arcing contact of the second striking gold utensil, form pure air gap between two arcing contacts, be provided with a fixed insulation spare between the first bar-shaped metal electrode and the second bar-shaped metal electrode, the two ends of fixed insulation spare are separately fixed on the first bar-shaped metal electrode and the second bar-shaped metal electrode, and the bottom of lightning arrester is provided with conducting bracket; Clamping part on the circuit clamping gold utensil be provided with left bolt, right bolt, on press from both sides tooth, press from both sides tooth down, wherein, left bolt and right bolt are used to adjust folder tooth and the tightness degree of pressing from both sides down between the tooth; The first arc gold utensil and the first metal electrode junction are provided with bolt, and bolt is used to regulate the distance between the arcing contact of the arcing contact of the first striking gold utensil and the second striking gold utensil.
Beneficial effect:
The utility model adopts band series connection external series gap metal oxide arrester and line insulator series-parallel system to constitute the distribution line lightning protection device, when thunderbolt shaft tower or lightning arrester, the high potential that lightning current causes makes the series gap action of leakage conductor, reduced the potential difference between tower arm and the lead, guarantee no longer flashover of insulator string, thereby avoid line tripping to have a power failure.After the series gap action, the residual voltage of lightning arrester body not only is limited to the flashover voltage far below insulator string, and under lightning current system's power-frequency voltage later, can extinguish power current automatically, guarantees normal power supply.
When thunderbolt during shaft tower, one part of current flows into the earth by shaft tower, and near the shaft tower a part flows to by lightning conducter when shaft tower point and traverse point potential difference during greater than 50% discharge voltage of insulator string, the insulator string flashover will take place.After having installed the distribution line lightning protection device additional, one part of current flows into lead by the lightning arrester action, improved the current potential of lead, thereby reduced the potential difference of lead and shaft tower, when less than the insulator string flashover voltage, flashover just can not take place in insulator string, thereby has reached the purpose that prevents lightning stroke trip.
At the distribution line of different insulative level,, can protect distribution line and equipment to greatest extent through the insulation coordination of the strict striking gold utensil assurance circuit that calculates and customize; Simultaneously, the selected lightning arrester of distribution line lightning protection device provided by the utility model, in service at the scene, under most situations, can guarantee to block the effect of power frequency continued flow.Line insulator external insulation characteristic is studied, adopted rational insulation coordination to calculate the cooperation parameter of determining lightning arrester, determine the gap size and the structure of lightning arrester at last.The insulation coordination of distribution line lightning protection and line insulator can be accomplished: the distribution line anti-lightening protector can tolerate maximum power-frequency overvoltage, action message under lightning impulse, protection insulator and lead; Under lead windage yaw, extreme climate effect, do not change flash-over characteristic substantially; Has optimal arc extinction performance.
Striking gold utensil gap through tight simulation calculation and process verification experimental verification; the resistor disc that can guarantee lightning arrester inside does not bear voltage; avoided the deterioration problem of resistor disc thus; fixed insulation spare can guarantee that twisting and skew do not take place two striking gold utensils; remain best striking gap, so that lightning protection effect the best of anti-lightening protector.
Four, description of drawings
Fig. 1 is the structural representation of the anti-lightening protector of band series gap.
Among the figure: (1) lightning arrester, (2) circuit clamping gold utensil, (3) first bar-shaped metal electrodes, (4) second bar-shaped metal electrodes, (5) first striking gold utensils, (6) second striking gold utensils, the arcing contact of (7) first striking gold utensils, the arcing contact of (8) second striking gold utensils, (9) fixed insulation spare, (10) conducting bracket, (11) left bolt, (12) right bolt, (13) go up the folder tooth, (14) press from both sides tooth, (15) bolt down.
Five, embodiment
Embodiment 1:
A kind of anti-lightening protector with series gap, comprise lightning arrester 1 that has the first bar-shaped metal electrode 3 and the circuit clamping gold utensil 2 that has the second bar-shaped metal electrode 4, one end of the first bar-shaped metal electrode 3 links to each other with lightning arrester 1 top, the other end is connected with the first striking gold utensil 5, one end of the second bar-shaped metal electrode 4 links to each other with circuit clamping gold utensil 2, the other end is connected with the second striking gold utensil 6, the arcing contact 7 of the first striking gold utensil is relative with the arcing contact 8 of the second striking gold utensil, form pure air gap between two arcing contacts, be provided with a fixed insulation spare 9 between the first bar-shaped metal electrode 3 and the second bar-shaped metal electrode 4, the two ends of fixed insulation spare 9 are separately fixed on the first bar-shaped metal electrode 3 and the second bar-shaped metal electrode 4, the bottom of lightning arrester 1 is provided with conducting bracket 10, is connected with the circuit cross-arm; Clamping part on the circuit clamping gold utensil be provided with left bolt 11, right bolt 12, on press from both sides tooth 13, press from both sides tooth 14 down, wherein, left bolt 11 and right bolt 12 are used to adjust folder tooth 13 and the tightness degree of pressing from both sides down between the tooth 14; The first arc gold utensil 5 and first metal electrode, 3 junctions are provided with bolt 15, and bolt is used to regulate the distance between the arcing contact 8 of the arcing contact 7 of the first striking gold utensil and the second striking gold utensil.
Claims (3)
1. anti-lightening protector with series gap; it is characterized in that comprising the lightning arrester (1) that has the first bar-shaped metal electrode (3) and have the circuit clamping gold utensil (2) of the second bar-shaped metal electrode (4); one end of the first bar-shaped metal electrode (3) links to each other with lightning arrester (1) top; the other end is provided with the first striking gold utensil (5); one end of the second bar-shaped metal electrode (4) links to each other with circuit clamping gold utensil (2); the other end is provided with the second striking gold utensil (6); the arcing contact of the first striking gold utensil (7) is relative with the arcing contact (8) of the second striking gold utensil; form pure air gap between two arcing contacts; be provided with a fixed insulation spare (9) between the first bar-shaped metal electrode (3) and the second bar-shaped metal electrode (4); the two ends of fixed insulation spare (9) are separately fixed on the first bar-shaped metal electrode (3) and the second bar-shaped metal electrode (4), and the bottom of lightning arrester (1) is provided with conducting bracket (10).
2. according to the anti-lightening protector of the described band series gap of claim 1; it is characterized in that clamping part on the described circuit clamping gold utensil be provided with left bolt (11), right bolt (12), on press from both sides tooth (13), press from both sides tooth (14) down, left bolt (11) and right bolt (12) are used to adjust folder tooth (13) and the tightness degree of pressing from both sides down between the tooth (14).
3. according to the anti-lightening protector of the described band series gap of claim 1; it is characterized in that being provided with bolt (15) in the described first arc gold utensil (5) and first metal electrode (3) junction, bolt is regulated the distance between the arcing contact (8) of the arcing contact (7) of the first striking gold utensil and the second striking gold utensil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201605567U CN201260026Y (en) | 2008-09-28 | 2008-09-28 | Lightning protector with series interval |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201605567U CN201260026Y (en) | 2008-09-28 | 2008-09-28 | Lightning protector with series interval |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201260026Y true CN201260026Y (en) | 2009-06-17 |
Family
ID=40774263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201605567U Expired - Fee Related CN201260026Y (en) | 2008-09-28 | 2008-09-28 | Lightning protector with series interval |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201260026Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737795A (en) * | 2011-04-12 | 2012-10-17 | 王巨丰 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
| CN105529617A (en) * | 2016-01-05 | 2016-04-27 | 北京乾源风电科技有限公司 | Line lightning arrester |
| CN110578131A (en) * | 2019-10-18 | 2019-12-17 | 永固集团股份有限公司 | Laser chemical vapor deposition ceramic layer production line and production process for spherical part of lightning protection device |
-
2008
- 2008-09-28 CN CNU2008201605567U patent/CN201260026Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737795A (en) * | 2011-04-12 | 2012-10-17 | 王巨丰 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
| CN102737795B (en) * | 2011-04-12 | 2014-04-16 | 王巨丰 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
| CN105529617A (en) * | 2016-01-05 | 2016-04-27 | 北京乾源风电科技有限公司 | Line lightning arrester |
| CN105529617B (en) * | 2016-01-05 | 2017-06-06 | 北京乾源风电科技有限公司 | A kind of leakage conductor |
| CN110578131A (en) * | 2019-10-18 | 2019-12-17 | 永固集团股份有限公司 | Laser chemical vapor deposition ceramic layer production line and production process for spherical part of lightning protection device |
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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: 20090617 Termination date: 20160928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |