CN203631987U - Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap - Google Patents
Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap Download PDFInfo
- Publication number
- CN203631987U CN203631987U CN201320781444.4U CN201320781444U CN203631987U CN 203631987 U CN203631987 U CN 203631987U CN 201320781444 U CN201320781444 U CN 201320781444U CN 203631987 U CN203631987 U CN 203631987U
- Authority
- CN
- China
- Prior art keywords
- insulator
- electrode
- wire
- pawl
- rotating shaft
- 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
- 239000012212 insulator Substances 0.000 title claims abstract description 36
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 230000000875 corresponding Effects 0.000 claims description 3
- 210000000078 Claw Anatomy 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 206010042255 Struck by lightning Diseases 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
Abstract
The utility model discloses a lightning-protection device for an insulator through employing a rotating shaft for the double-adjustment of a parallel gap, and the device comprises the insulator. Two ends of the insulator are respectively in fixed connection with a ground-side electrode and a wire-side electrode, which are respectively a claw with at least three fingers. The fingers at two sides of the insulator are equal in number and are correspondingly arranged. The device provided by the utility model is simple in structure, and is convenient to install. The fingers of the ground-side electrode or the wire-side electrode are connected movably, and move along the plane where the axis of the insulator is located, so as to adjust the distance between the ground-side electrode and the wire-side electrode. The device can be used for insulators in different lengths.
Description
Technical field
The utility model relates to a kind of lightning protection device for power overhead network, is specifically related to the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft.
Background technology
Aerial power transmission line lightning protection is that work about electric power person makes great efforts the problem of inquiring into always.In recent years, the fault being caused by thunder and lightning in electrical network still accounts for significant proportion, comprises that the power frequency continued flow after lightning stroke flashover damages insulator and gold utensil thereof, causes line accident.Lightning fault remains one of key factor affecting power grid security.
The existing lightning protection measures of aerial power transmission line, as set up into thunder line, reduction pole tower ground resistance, reinforced insulation etc., its core concept is to improve as much as possible the lightning withstand level of circuit, reduces tripping rate with lightning strike.These lightning protection measuress can be summarized as " blocking type " lightning protection mode.For the early stage Net Frame of Electric Network weakness of China, the poor actual conditions of (oil) switch performance, lightning protection aforesaid way is suitable.In recent years, China's electrical network fast development, grid structure is more and more stronger; Along with technological progress, transformer station is used SF6 switch in a large number, relaying protection Microcomputer; reclosing device obtains general screening and uses; provide favourable condition for developing new lightning protection mode, if now still only continue to use original lightning protection mode, seemed conservative and unilateral.In addition, installation line type enters the mode of thunder device, and cost is very high, can not generally adopt.
Application number is 200420001291.8 patent overhead circuit parallel gap lightning protection device, and the parallel gap lightning protection device disclosing is simple in structure, easy for installation, and electrode material and diameter can tolerate repeatedly calcination of high current arc.But due to ground connection side and side of wire was electrode non-adjustable, so the insulator differing for length, because the space between two electrodes is larger, can not play a protective role.
Utility model content
Gap for parallel gap lightning protection device in prior art is non-adjustable, can not regulate the problem of two interelectrode distances.The utility model provides a kind of rotating shaft simple in structure two insulator lightning protection devices that regulate parallel connection gaps.
To achieve these goals, the technical solution adopted in the utility model is: the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, comprise insulator, two ends dead earth lateral electrode and the side of wire was electrode of insulator, described ground connection lateral electrode and side of wire was electrode are the pawl that at least three pawls refer to, the identical and corresponding setting of the pawl index of insulator both sides.
One of 3,5,7 of described pawl exponent bits.
The described pawl of leading lateral electrode refers to that pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode and side of wire was electrode in order to be flexibly connected.
Described flexible connection, pawl refers to side of wire was gold utensil dead by bolted splice hinge.
Described ground connection lateral electrode pawl refers to for being flexibly connected, pawl refer to ground connection side gold utensil by bolted splice hinge extremely.
Beneficial effect is: the core of " parallel connection gaps lightning protection " mode is to allow circuit to have certain tripping rate with lightning strike, but reclosing can be successful, without permanent fault. in parallel with insulator by the gap that adopts ground connection lateral electrode, side of wire was electrode to form, connect and dodge thunder and lightning and dredge power frequency arc.Parallel connection gaps and the ground connection side of insulator string and connecting of line side that ground connection lateral electrode, side of wire was electrode form, make them have respectively identical current potential, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.
Adjustable parallel gap lightning protection device of the present utility model is simple in structure, easy for installation; the pawl of side of wire was electrode or ground connection lateral electrode refers to for being flexibly connected; pawl refers to along the planar movement at insulator axis place; to adjust the distance between earth connection lateral electrode and side of wire was electrode; insulator for different length all can use; electrode more easily reaches suitable guard space by two adjustings, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, comprise insulator 1, two ends dead earth lateral electrode 3 and the side of wire was electrode 2 of insulator, described ground connection lateral electrode 3 and side of wire was electrode 2 refer to at least three pawls, the identical and corresponding setting of the pawl index of insulator both sides.One of 3,5,7 of described pawl exponent bits.The pawl of described side of wire was electrode 2 refers to that pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode 3 and side of wire was electrode 2 in order to be flexibly connected.Described flexible connection, pawl refers to side of wire was gold utensil hinged and hinge is dead by bolt 4.Described ground connection lateral electrode 3 pawls refer to for being flexibly connected, and pawl refers to ground connection side gold utensil hinged and hinge is dead by bolt 4.。
This lightning protection device is installed on behind the two ends of insulator, by the height of the adjustable side of wire was electrode of bolt 4, reaches suitable protection gap, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.
Claims (5)
1. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, comprise insulator (1), the two ends dead earth lateral electrodes (3) of insulator and side of wire was electrode (2), it is characterized in that: described ground connection lateral electrode (3) and side of wire was electrode (2) refer to at least three pawls the identical and corresponding setting of the pawl index of insulator both sides.
2. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 1, is characterized in that: one of 3,5,7 of described pawl exponent bits.
3. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 2, it is characterized in that: the pawl of described side of wire was electrode (2) refers to for being flexibly connected, pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode (3) and side of wire was electrode (2).
4. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 3, is characterized in that: described flexible connection, pawl refers to side of wire was gold utensil hinged and hinge is dead by bolt (4).
5. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 4, is characterized in that: described ground connection lateral electrode (3) pawl refers to for being flexibly connected, pawl refer to ground connection side gold utensil by bolted splice hinge extremely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781444.4U CN203631987U (en) | 2013-12-03 | 2013-12-03 | Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781444.4U CN203631987U (en) | 2013-12-03 | 2013-12-03 | Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203631987U true CN203631987U (en) | 2014-06-04 |
Family
ID=50818431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320781444.4U Expired - Fee Related CN203631987U (en) | 2013-12-03 | 2013-12-03 | Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203631987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795188A (en) * | 2015-04-17 | 2015-07-22 | 国家电网公司 | Adjustable parallel gap structure of linear insulator string |
-
2013
- 2013-12-03 CN CN201320781444.4U patent/CN203631987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795188A (en) * | 2015-04-17 | 2015-07-22 | 国家电网公司 | Adjustable parallel gap structure of linear insulator string |
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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: 20140604 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |