CN201146358Y - Clearance lightning-proof protection device - Google Patents
Clearance lightning-proof protection device Download PDFInfo
- Publication number
- CN201146358Y CN201146358Y CNU2008200318635U CN200820031863U CN201146358Y CN 201146358 Y CN201146358 Y CN 201146358Y CN U2008200318635 U CNU2008200318635 U CN U2008200318635U CN 200820031863 U CN200820031863 U CN 200820031863U CN 201146358 Y CN201146358 Y CN 201146358Y
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- CN
- China
- Prior art keywords
- arc
- insulator
- striking
- metal bar
- cable clamp
- 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 - Lifetime
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model relates to a gap lightning protection device, belonging to the technical field of the lightning protection of the power system transmission line and comprising an arc-resistant insulator, a puncture wire clamp and an arc-induced insulated flexible conductor; wherein, the puncture wire clamp pierces the insulation layer of an overhead insulated lead and is connected with a conductor inside the overhead insulated lead. The device is characterized in that the high voltage end of the arc-resistant insulator is electrically connected with the overhead insulated lead, the grounding end of the arc-resistant insulator is connected with an insulator; the insulator is respectively provided with an arc-induced metal bar with arc-induced space A and a grounding arc-induced metal bar which is electrically connected with the grounding end of the arc-resistant insulator, both ends of the arc-induced insulated flexible conductor are electrically connected with the arc-induced metal bar and the puncture wire clamp respectively. The protection device has the advantages of low cost, simple structure, no change of the place of the arc-resistant insulator and the puncture wire clamp on the original line, no effect on the arc-resistant insulator and the puncture wire clamp by the high temperature when discharging and reliable arc-induced.
Description
Technical field
The utility model relates to a kind of clearance lightning-proof protective device that prevents that the aerial insulated cable line is struck by lightning disconnected, belongs to the shocking preventing technology field of power system transmission line.
Background technology
The distribution overhead transmission line of electric power system such as 10kV or 20kV electric pressure mostly adopts the insulated aerial lead.For preventing that thunder and lightning from striking off suspended insulated guide wire; as CN1238864C disclosed " being used to prevent the puncture clamp insulator of suspended insulated guide wire lightning-caused breaking "; employing arc resistance insulation; penetrating cable clamp and be connected insulating soft wire between arc resistance insulation and the penetrating cable clamp; penetrating cable clamp is installed in the insulating barrier of wearing out insulated conductor on the suspended insulated guide wire; the puncture wire clamp is electrically connected with lead; one end of insulating soft wire is installed on the penetrating cable clamp; the other end extremely is electrically connected with the high-tension electricity of arc resistance insulation; make arc resistance insulation identical with the current potential of penetrating cable clamp; when the thunder and lightning electrion; the arc root of the power frequency short circuit current electric arc that continues is fixed on the high-field electrode of arc resistance insulation and burns, and the protection suspended insulated guide wire avoids blowing.But this kind structure is that high-voltage arc is caused arc resistance insulation, and the arc root of afterflow power frequency arc is burnt on the high-field electrode of arc resistance insulation, easily causes the damage of arc resistance insulation, and influences the reliability of line work.CN1481057A disclosed " being used to prevent the are-tight puncture gold utensil of suspended insulated guide wire lightning-caused breaking "; be to adopt penetrating cable clamp; the ground connection arc electrode; are-tight electrode and insulating cover; the insulating barrier that penetrating cable clamp is worn out insulated conductor makes the puncture wire clamp be electrically connected with lead; are-tight electrode is electrically connected with penetrating cable clamp; the outside that insulating cover is fixed on penetrating cable clamp is used for insulation and limit arc; the earth terminal that the ground connection arc electrode is installed in line insulator is electrically connected; make when thunder and lightning takes place; discharge between penetrating cable clamp and the ground connection arc electrode; the afterflow power frequency arc is moved on the are-tight electrode burn, the protection suspended insulated guide wire avoids blowing.The are-tight puncture gold utensil of this kind structure discharges by ground connection arc electrode and are-tight electric discharge between electrodes distance when thunderbolt; because are-tight electrode is mounted on the penetrating cable clamp; and the ground connection arc electrode is installed on the line insulator; on the one hand; installation is work high above the ground; owing to can not guarantee are-tight electrode on the penetrating cable clamp and the striking spacing between the ground connection arc electrode on the line insulator; especially thunder and lightning weather wind and rain can make suspended insulated guide wire rock; and change the striking spacing, so reduced the reliability of lightning protection.On the other hand, because are-tight electrode is installed on the penetrating cable clamp, afterflow power frequency arc during thunderbolt is to burn on are-tight electrode, and the current strength of thunderbolt can reach the training of several Wan An, temperature can reach 20,000 degrees centigrade, because of are-tight electrode near suspended insulated guide wire, localized hyperthermia can influence the insulating barrier and the penetrating cable clamp of the suspended insulated guide wire of penetrating cable clamp periphery.
Summary of the invention
Provide a kind of simple in structure on the purpose of this utility model; low-cost, simple in structure; do not change arc resistance insulation on original circuit and the position of penetrating cable clamp, the high temperature during discharge can not influence arc resistance insulation and penetrating cable clamp, the reliable clearance lightning-proof protective device of striking.
The utility model is that the technical scheme that reaches above-mentioned is: a kind of clearance lightning-proof protective device; comprise arc resistance insulation; penetrating cable clamp and striking insulating soft wire; penetrating cable clamp penetrates the insulating barrier of suspended insulated guide wire and is connected with its inner electric conductor; it is characterized in that: the high-pressure side of described arc resistance insulation is electrically connected with suspended insulated guide wire; the earth terminal of arc resistance insulation is connected with insulator; striking metal bar and ground connection striking metal bar with striking spacing A are housed respectively on the insulator; ground connection striking metal bar is electrically connected with the earth terminal of arc resistance insulation, and the two ends of striking insulating soft wire are electrically connected with striking metal bar and penetrating cable clamp respectively.
The utility model connects an insulator at the earth terminal of arc resistance insulation; have striking metal bar and ground connection striking metal bar on the insulator; ground connection striking metal bar is electrically connected with the earth terminal of arc resistance insulation; the striking insulating soft wire that is installed on the penetrating cable clamp is connected on the striking metal bar; when therefore being struck by lightning; can with the thunderbolt arc energy in the extremely short time from suspended insulated guide wire through the puncture wire clamp; the striking insulating soft wire is transferred on the striking metal bar; puncture striking spacing starting arc; by the ground connection termination the earth of arc resistance insulation, thereby protection suspended insulated guide wire and arc resistance insulation are injury-free.The utility model is installed in striking metal bar and ground connection striking metal bar on the insulator, and insulator mainly bears own wt, so endurance requires more conventional arc resistance insulation much lower,, not only reduced manufacturing cost, nor can destroy the circuit insulating.The utility model is because insulator, striking metal bar and ground connection striking metal bar connect as one structure, and is simple in structure, can not omit during construction and installation, can improve efficiency of construction, even if after high temperature damages, also only needs to remove to change, and use cost is low.The utility model is owing to arc resistance insulation and the penetrating cable clamp installation site that do not change on original insulated overhead line, only insulator is installed in the earth terminal of the sub-bottom of arc resistance insulation, and the striking insulating soft wire is connected on penetrating cable clamp and the striking metal bar, the online transformation that very convenient existing insulated overhead line is anti-lightning strike has usability and economy preferably.The utility model adopts the striking insulating soft wire to be connected with penetrating cable clamp with the striking metal bar; not only the striking metal bar moves to the bottom of arc resistance insulation; having increased discharge and having burnt a little distance with penetrating cable clamp and aerial insulated wire; high temperature during discharge can not influence penetrating cable clamp and aerial insulated wire; and when suspended insulated guide wire is subjected to external force and rocks; and the insulation striking flexible conductor that plays interconnect function is not pind down; make the puncture part of penetrating cable clamp inside conductor can be not impaired, guarantee the reliability of lightning protection.Striking spacing of the present utility model is by being installed in the decision of striking metal bar on the insulator and the striking spacing between the ground connection striking metal bar, owing to can not be subjected to the influence of other external force, and guarantee the reliability of striking.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Wherein: the 1-suspended insulated guide wire, 2-arc resistance insulation, 3-is horizontal single, 4-ground connection striking metal bar, 5-insulator, 6-striking metal bar, 7-striking insulating soft wire, 8-penetrating cable clamp.
Embodiment
See shown in Figure 1; clearance lightning-proof protective device of the present utility model comprises arc resistance insulation 2; penetrating cable clamp 8 and striking insulating soft wire 7; penetrating cable clamp 8 is installed on the suspended insulated guide wire 1; and penetrate the insulating barrier of suspended insulated guide wire 1; penetrating cable clamp 8 is connected with the electric conductor of suspended insulated guide wire 1; and the high-pressure side of arc resistance insulation 2 is connected with suspended insulated guide wire 1; the earth terminal of arc resistance insulation 2 is connected with insulator 5; this insulator 5 is connected the earth terminal of arc resistance insulation 2 by horizontal stroke list 3 and securing member; for reducing the volume of insulator 5; this insulator 5 is provided with a plurality of shirt rims that increase creepage distance; striking metal bar 6 and ground connection striking metal bar 4 also are housed respectively on the insulator 5; the two ends of striking insulating soft wire 7 are connected with penetrating cable clamp 8 with striking metal bar 6 respectively; with the overvoltage in when thunderbolt from suspended insulated guide wire 1 through striking insulating soft wire 7 and striking metal bar 6; and has striking spacing A between striking metal bar 6 and the ground connection striking metal bar 4; A is between 20～200mm for this striking spacing; arc energy is punctured striking gap A starting arc; earth terminal by arc resistance insulation 2 inserts the earth, and built on stilts insulator lead 1 of protection and arc resistance insulation 2 are injury-free.
The utility model can be controlled striking spacing A effectively at different electric pressures, the striking metal bar 6 that is installed on the insulator 5 can be along insulator 5 axial adjustment, the coupling part of this striking metal bar 6 is provided with via hole, and the coupling part of insulator 5 is provided with screw thread, locking nut is connected striking metal bar 6 on the insulator 5, and is provided with the adjustment pad between insulator 5 and the striking metal bar 6.The ground connection striking metal bar 4 that the utility model is installed on the insulator 5 also can be along insulator 5 axial adjustment, the coupling part of same this ground connection striking metal bar 4 is provided with via hole, the coupling part of insulator 5 is provided with screw thread, locking nut is connected ground connection striking metal bar 4 on the insulator 5, is provided with the adjustment pad between insulator 5 and ground connection striking metal bar 4.
When suspended insulated guide wire 1 when being struck by lightning; lightning overvoltage through suspended insulated guide wire 1, penetrating cable clamp 8 and striking insulating soft wire 7 to striking metal bar 6; Lightning Over-voltage on the suspended insulated guide wire punctures striking spacing A starting arc; the afterflow power frequency arc is moved on the striking metal bar 6 to be burnt; and cause the earth by the earth terminal of arc resistance insulation 2; the thunderbolt arc energy was shifted from suspended insulated guide wire in the extremely short time, thereby the protection suspended insulated guide wire is injury-free.
Claims (5)
1; a kind of clearance lightning-proof protective device; comprise arc resistance insulation (2); penetrating cable clamp (8) and striking insulating soft wire (7); penetrating cable clamp (8) penetrates the insulating barrier of suspended insulated guide wire (1) and is connected with its inner electric conductor; it is characterized in that: the high-pressure side of described arc resistance insulation (2) is electrically connected with suspended insulated guide wire (1); the earth terminal of arc resistance insulation (2) is connected with insulator (5); striking metal bar (6) and ground connection striking metal bar (4) with striking spacing A are housed respectively on the insulator (5); ground connection striking metal bar (4) is electrically connected with the earth terminal of arc resistance insulation (2), and the two ends of striking insulating soft wire (7) are electrically connected with striking metal bar (6) and penetrating cable clamp (8) respectively.
2, clearance lightning-proof protective device according to claim 1 is characterized in that: described insulator (5) is connected the earth terminal of arc resistance insulation (2) by horizontal single (3) and securing member.
3, clearance lightning-proof protective device according to claim 1 and 2 is characterized in that: the outer rim of described insulator (5) is provided with 3～6 full skirts that increase creepage distance.
4, clearance lightning-proof protective device according to claim 1 is characterized in that: the described striking metal bar (6) that is installed on the insulator (5) can be along insulator (5) axial adjustment.
5, clearance lightning-proof protective device according to claim 1 is characterized in that: the described ground connection striking metal bar (4) that is installed on the insulator (5) can be along insulator (5) axial adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200318635U CN201146358Y (en) | 2008-01-30 | 2008-01-30 | Clearance lightning-proof protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200318635U CN201146358Y (en) | 2008-01-30 | 2008-01-30 | Clearance lightning-proof protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201146358Y true CN201146358Y (en) | 2008-11-05 |
Family
ID=40083245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200318635U Expired - Lifetime CN201146358Y (en) | 2008-01-30 | 2008-01-30 | Clearance lightning-proof protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201146358Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232163B (en) * | 2008-01-30 | 2010-06-02 | 江苏省电力公司常州供电公司 | Clearance lightning-proof protection method and apparatus thereof |
| CN102738761A (en) * | 2012-06-14 | 2012-10-17 | 河南省电力公司信阳供电公司 | Clearance lightning protection device |
-
2008
- 2008-01-30 CN CNU2008200318635U patent/CN201146358Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232163B (en) * | 2008-01-30 | 2010-06-02 | 江苏省电力公司常州供电公司 | Clearance lightning-proof protection method and apparatus thereof |
| CN102738761A (en) * | 2012-06-14 | 2012-10-17 | 河南省电力公司信阳供电公司 | Clearance lightning protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081105 Effective date of abandoning: 20080130 |