CN202120693U - Pillar type arc preventing insulator - Google Patents
Pillar type arc preventing insulator Download PDFInfo
- Publication number
- CN202120693U CN202120693U CN2011202025522U CN201120202552U CN202120693U CN 202120693 U CN202120693 U CN 202120693U CN 2011202025522 U CN2011202025522 U CN 2011202025522U CN 201120202552 U CN201120202552 U CN 201120202552U CN 202120693 U CN202120693 U CN 202120693U
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- end electrode
- voltage dependent
- dependent resistance
- core rod
- resistance blocks
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Abstract
The utility model relates to a pillar type arc preventing insulator which includes an insulating core rod and an upper electrode and a lower electrode which are connected with the two ends of the insulating core rod. The upper electrode and the lower electrode are fixed with a connecting fitting respectively. The outside of the insulating core rod is sleeved with a silica gel umbrella cover. A plurality of voltage dependent resistance blocks which are connected in series are arranged between the upper electrode and the lower electrode and an outer wall of the insulating core rod so as to form a lightning stroke discharge path. The inside of the silica gel umbrella cover and the outside of the voltage dependent resistance blocks are sleeved with an insulating pipe. The non-linear volt-ampere characteristic of the voltage dependent resistance blocks is excellent, only a current of hundreds of microamperes can pass through under a normal working voltage, so the upper electrode and the lower electrode are in a relative insulation state. In a lightning stroke, the current passing through the voltage dependent resistance blocks rapidly increases, and simultaneously, the amplitude of the overvoltage is limited, so the energy of the overvoltage is released, and a line is effectively protected. Later on, the voltage dependent resistance blocks return to a high resistance state, and an electric power system can work normally. The pillar type arc preventing insulator has the advantages of compact structure, reliable performance, and low cost.
Description
Technical field: the utility model relates to the insulator that uses in a kind of overhead power line, particularly the insulator of 10kV overhead insulating used for transmission line.
Background technology: the 10kV distribution line that adopts aerial insulated wire is the long and related the closest electric pressure circuit with the user of milimeter number in the electric power system.Because the insulation lightning withstand level of 10kV circuit is generally lower, when being struck by lightning, be difficult to bear direct lightning strike or the effect of induction thunder, post insulator explosion or broken string accident very easily take place.
Summary of the invention: to the deficiency of prior art, the utility model provides a kind of column support type preventing arc insulator that can effectively resist thunderbolt.
The utility model comprises insulation mandrel and is connected the upper end electrode and the lower end electrode at two ends; This upper and lower end electrode all is fixed with the connection gold utensil; The insulation mandrel outside also is with the silica gel umbrella cover; Be provided with several varistor blocks in series connection between upper end electrode and the lower end electrode, on the outer wall of insulation mandrel and constitute the lightning discharge path, and in the silica gel umbrella cover, outside the varistor block, also be with insulated tube.
The non-linear voltage-current characteristic of the varistor block of the utility model is very good, under normal working voltage, only has the electric current of hundreds of microampere to pass through, and makes the upper and lower end electrode be in relative state of insulation.When thunder and lightning attacked, the electric current that flows through varistor block increased rapidly, has limited superpotential amplitude simultaneously, has discharged superpotential energy, effective protection circuit, and after this varistor block recovers high-impedance state again, makes the electric power system operate as normal.And, the compact conformation of the utility model, dependable performance, cost is lower.
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Description of drawings: Fig. 1 is the main structure sketch map of embodiment.
Fig. 2 is the A-A generalized section of Fig. 1.
Embodiment: as depicted in figs. 1 and 2, insulation mandrel 1 two ends are connected with upper end electrode 2 and lower end electrode 3, are fixed with the upper end on the upper end electrode 2 and connect gold utensil 8, are fixed with the lower end on the lower end electrode 3 and connect gold utensil 10.Insulation mandrel 1 outside also is with silica gel umbrella cover 4.Be provided with several varistor blocks 5 in series connection between upper end electrode 2 and the lower end electrode 3, on the outer wall of insulation mandrel 1 and constitute the lightning discharge paths, and in silica gel umbrella cover 4, outside the varistor block 5, also be with insulated tube 6.General varistor block 5 is series connection more than three, can use various pressure sensitives with non-linear voltage-current characteristic such as ZnO resistors.Between upper end electrode 2 and varistor block 5, can be provided with compression spring 7, constitute the elastic compression structure, the contact of lightning discharge path is more reliable like this.
The two ends of the insulated tube 6 of present embodiment are threaded with upper end electrode 2 and lower end electrode 3 respectively, install easy to connect reliably, have better insulating protection property during thunderbolt.The upper end that is fixed on the upper end electrode 2 connects gold utensil 8 employing penetrating cable clamp formulas; Thorn gear piece 9 wherein contacts with upper end electrode 2 conductions; The upper end connects and need not the stripping of insulatin crust when gold utensil 8 is connected with insulated conductor like this; Utilize thorn gear piece 9 to thrust and get final product, more convenient operation also can be avoided core water inlet and corrosion.The lower end connects 10 of gold utensils and can adopt and the similar bolt type gold utensil of common pin insulator.
Under normal working voltage, the lightning discharge path that varistor block 5 constitutes only has the electric current of hundreds of microampere to pass through, and makes upper end electrode 2 and lower end electrode 3 be in relative state of insulation.When thunder and lightning attacked, the resistance of varistor block 5 changed, and increases rapidly through electric current; Amplitude that simultaneously can over-voltage has discharged superpotential energy, has effectively protected transmission line; Thunderbolt varistor block 5 later can recover high-impedance state again, makes the electric power system operate as normal.
Claims (5)
1. column support type preventing arc insulator; Comprise insulation mandrel and be connected the upper end electrode and the lower end electrode at two ends; This upper and lower end electrode all is fixed with the connection gold utensil; The insulation mandrel outside also is with the silica gel umbrella cover, it is characterized by: be provided with several varistor blocks (5) in series connection between upper end electrode (2) and the lower end electrode (3), on the outer wall of insulation mandrel (1) and constitute the lightning discharge path, and in silica gel umbrella cover (4), outside the varistor block (5), also be with insulated tube (6).
2. column support type preventing arc insulator according to claim 1 is characterized by: between upper end electrode (2) and varistor block (5), be provided with compression spring (7), constitute the elastic compression structure.
3. column support type preventing arc insulator according to claim 1 and 2 is characterized by: the upper end that is fixed on the upper end electrode (2) connects gold utensil (8) employing penetrating cable clamp formula, and thorn gear piece (9) wherein contacts with upper end electrode (2) conduction.
4. column support type preventing arc insulator according to claim 1 and 2 is characterized by: the two ends of insulated tube (6) respectively and upper end electrode (2) and lower end electrode (3) be threaded.
5. column support type preventing arc insulator according to claim 3 is characterized by: the two ends of insulated tube (6) respectively and upper end electrode (2) and lower end electrode (3) be threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202025522U CN202120693U (en) | 2011-06-16 | 2011-06-16 | Pillar type arc preventing insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202025522U CN202120693U (en) | 2011-06-16 | 2011-06-16 | Pillar type arc preventing insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202120693U true CN202120693U (en) | 2012-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202025522U Expired - Fee Related CN202120693U (en) | 2011-06-16 | 2011-06-16 | Pillar type arc preventing insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202120693U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714925A (en) * | 2013-12-11 | 2014-04-09 | 浙江天虹电气金具有限公司 | Hanging lightning protection wire clamp |
| CN105514711A (en) * | 2014-09-24 | 2016-04-20 | 胡正宇 | Spark-proof electric plug connector |
| CN111627622A (en) * | 2020-06-05 | 2020-09-04 | 江西百新电瓷电气有限公司 | 10KV automatic-adjustment lightning-protection ice porcelain insulator with pressure-sensitive device and manufacturing method thereof |
| CN113674939A (en) * | 2021-01-26 | 2021-11-19 | 青岛鼎信通讯股份有限公司 | 10kV lightning arrester with medium-voltage carrier communication capacitive coupler function |
| CN114035002A (en) * | 2021-11-11 | 2022-02-11 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety inspection device |
-
2011
- 2011-06-16 CN CN2011202025522U patent/CN202120693U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714925A (en) * | 2013-12-11 | 2014-04-09 | 浙江天虹电气金具有限公司 | Hanging lightning protection wire clamp |
| CN105514711A (en) * | 2014-09-24 | 2016-04-20 | 胡正宇 | Spark-proof electric plug connector |
| CN111627622A (en) * | 2020-06-05 | 2020-09-04 | 江西百新电瓷电气有限公司 | 10KV automatic-adjustment lightning-protection ice porcelain insulator with pressure-sensitive device and manufacturing method thereof |
| CN113674939A (en) * | 2021-01-26 | 2021-11-19 | 青岛鼎信通讯股份有限公司 | 10kV lightning arrester with medium-voltage carrier communication capacitive coupler function |
| CN114035002A (en) * | 2021-11-11 | 2022-02-11 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety inspection device |
| CN114035002B (en) * | 2021-11-11 | 2024-04-16 | 国网河南省电力公司商丘供电公司 | High tension transmission line insulator safety detection 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: 20120118 Termination date: 20180616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |