CN2098406U - Arc-extinguishing sectional insulator - Google Patents
Arc-extinguishing sectional insulator Download PDFInfo
- Publication number
- CN2098406U CN2098406U CN 91224668 CN91224668U CN2098406U CN 2098406 U CN2098406 U CN 2098406U CN 91224668 CN91224668 CN 91224668 CN 91224668 U CN91224668 U CN 91224668U CN 2098406 U CN2098406 U CN 2098406U
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- CN
- China
- Prior art keywords
- extinction angle
- arc
- extinguishing arc
- extinguishing
- section insulator
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- 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.)
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Abstract
The utility model relates to an arc-extinguishing sectional insulator. An existing insulation slideway and the structure of a flow guiding framework add a portal and an arc-resistant reacting bar to make the both ends of the angle of extinction gap respectively connect the both sides of a contacting net sectioning. When an electric locomotive passes the arc-extinguishing sectional insulator, the both ends of the arc-extinguishing sectional insulator are communicated. After the electric locomotive leaves, an electric arc is introduced into the angle of extinction gap which is used to cut the electric arc. The arc-extinguishing sectional insulator has the advantages of simple structure, low cost, convenient maintenance, long service life, etc.
Description
The present invention relates to a kind of shackle that is used for segmentation place of contact nets in electrified railways electricity.Particularly be operated in the shackle of electric segmentation place of contact system between multiple line of electrified railway up-downgoing branch-cut bridge.
Section insulator is the visual plant that is used for segmentation place of contact nets in electrified railways homophase electricity, when block of bow collector of electric locomotive will cut off electric current from contact system the last period during by section insulator.Be operated in the voltage that thousands of volts may appear in section insulator two ends on the multiple line of electrified railway up-downgoing branch-cut bridge contact system.When electric locomotive passes through, just can produce the electric arc of hundreds of peace like this, cause the accident of electric arc burn contact system.The section insulator of present domestic use does not all have arc-extinction device, and repeatedly accident has taken place, and the section insulator as up-downgoing branch-cut bridge in western station, the Sanmenxia Gorge is installed has burnt four groups.Section insulator between the up-downgoing of multiple line electrified section is bearing certain difference of potential, and this current potential official post section insulator often is under the disadvantageous service conditions and moves, and the operation scheme of V-arrangement skylight and train running in reverse direction makes this difference of potential more become to increasing.On-the-spot running condition has also proved this point, because no arc eliminator, insulation component material accelerated weathering even destruction under the calcination of electric arc of a lot of section insulators, insulating power and mechanical characteristics descend rapidly, become the hidden danger of accident.
The objective of the invention is to utilize the extinguishing arc horn gap of extinguishing arc section insulator to be breaking at contact system electricity segmentation place under electric segmentation place, V-arrangement skylight and the train running in reverse direction operating mode between the up-downgoing of multiple line electrified section from the electric current of contact system the last period, eliminate therefore and the accident of the electric arc burn contact system that produces guarantees the traffic safety under the various operating modes.
The present invention is achieved in that when motorcycle pantograph passes through the extinguishing arc section insulator, at first with two long extinction angle short circuits, make extinguishing arc section insulator two ends be communicated with, if these two ends have difference of potential, when then the long extinction angle of leaving the rear end in pantograph enters the short extinction angle of front end, between the long extinction angle of pantograph collector head and rear end, discharge and generation electric arc, along with advancing of pantograph, the bow of pantograph stretches this electric arc forward, a. g. between the short extinction angle that will grow extinction angle and front end is communicated with, at this moment, pantograph has been left the extinguishing arc section insulator and has been gone, elegant upward under thermal current and electrodynamic effect at the electric arc that burns between a pair of extinction angle, electric arc caused between the two extinguishing arc carbon balls burn, along with the increase gradually of arc road resistance, flame current weakens gradually, until being attenuated to burning away that energy that flame current provides can not pilot arc, at this moment, electric arc just can be from horizontal blanking.Extinguishing arc section insulator two terminal circuits disconnect, the original state of system recovery.
Owing to adopt such scheme, can be breaking at contact system electricity segmentation place under electric segmentation place, V-arrangement skylight and the train running in reverse direction operating mode between the up-downgoing of multiple line electrified section reliably from the electric current of contact system the last period, eliminate therefore and the accident of the electric arc burn contact system that produces, guarantee the traffic safety under the various operating modes, prolonged the period of inspection and repair of equipment, improve the service life of extinguishing arc section insulator, reduced the work capacity of maintenance of equipment, had high economic benefit.
Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the front view of the extinguishing arc section insulator of proposition according to the present invention.
Fig. 2 is the birds-eye view of the extinguishing arc section insulator of proposition according to the present invention.
Describe the details and the service condition of the extinguishing arc section insulator that proposes in detail below in conjunction with accompanying drawing.
This shackle comprises insulation slideway ［ 1 ］, water conservancy diversion framework ［ 2 ］, portal ［ 3 ］, extinguishing arc horn gap ［ 4 ］, are-tight load bar ［ 13 ］.The water conservancy diversion framework comprises deflecting plate ［ 5 ］, joint wire clamp ［ 6 ］, and joint wire clamp ［ 6 ］ links with copper contact wire.Portal ［ 3 ］ comprises portal body ［ 7 ］, long adjust bar ［ 8 ］, minor pole ［ 9 ］, portal ［ 3 ］ had both been regulated the locus of long extinction angle ［ 11 ］ and short extinction angle ［ 12 ］, supported it again and resisted the impact of pantograph and do not make it that permanent deformation takes place.Extinguishing arc horn gap ［ 4 ］ comprises long extinction angle ［ 11 ］, short extinction angle ［ 12 ］ and extinguishing arc carbon ball ［ 10 ］.The calcination that extinguishing arc carbon ball ［ 10 ］ adopts the graphitization electrical carbon material can bear electric arc, long extinction angle ［ 11 ］ all installs extinguishing arc carbon ball ［ 10 ］ additional in order to prolong the service life of extinguishing arc section insulator at an upper portion thereof with short extinction angle ［ 12 ］.Long arc angle ［ 11 ］ and short extinction angle ［ 12 ］ are 35 °～50 ° with the angle of horizontal surface.Distance 〉=500 at extinguishing arc carbon ball ［ 10 ］ center on long extinction angle ［ 11 ］ top and extinguishing arc carbon ball ［ 10 ］ center on short extinction angle ［ 12 ］ top millimeter.Are-tight load bar ［ 13 ］ is made up of polytetrafluoroethylene sheath ［ 14 ］ and load bar ［ 15 ］.Load bar ［ 15 ］ is used to bear tension force, and the calcination that polytetrafluoroethylene sheath ［ 14 ］ is used to bear electric arc, in order to reach the protection contact system not by the purpose of electrical arc erosion.When motorcycle pantograph passes through the extinguishing arc section insulator, at first from water conservancy diversion framework ［ 2 ］, slip over below the long extinction angle ［ 11 ］ of insulation slideway ［ 1 ］ and extinguishing arc section insulator left end and the short extinction angle ［ 12 ］, with two long extinction angle ［ 11 ］ short circuits, make extinguishing arc section insulator two ends be communicated with, if these two ends have difference of potential, when then the long extinction angle ［ 11 ］ of leaving the rear end in pantograph enters the short extinction angle ［ 12 ］ of front end, discharge between the long extinction angle ［ 11 ］ of the bow of pantograph and rear end and produce electric arc, along with advancing of pantograph, the bow of pantograph stretches this electric arc forward, until extinguishing arc horn gap ［ 4 ］ is communicated with, at this moment, pantograph has been left the extinguishing arc section insulator and has been gone, electric arc in burning between the extinguishing arc horn gap ［ 4 ］ is elegant upward under thermal current and electrodynamic effect, electric arc is caused burning between the two extinguishing arc carbon balls ［ 10 ］, increase gradually along with arc road resistance, flame current weakens gradually, until being attenuated to burning away that energy that flame current provides can not pilot arc, at this moment, electric arc just can be from horizontal blanking.Extinguishing arc section insulator two terminal circuits disconnect, the original state of system recovery.
Claims (6)
1, a kind of extinguishing arc section insulator comprises insulation slideway [1], water conservancy diversion framework [2], and portal [3], extinguishing arc horn gap [4], are-tight load bar [13] is characterized in that:
A. the water conservancy diversion framework comprises deflecting plate [5], joint wire clamp [6],
B. portal [3] comprises portal body [7], long adjust bar [8], minor pole [9], can regulate the locus of long extinction angle [11] and short extinction angle [12] respectively,
C. extinguishing arc horn gap [4] comprises long extinction angle [11], short extinction angle [12] and extinguishing arc carbon ball [10], the calcination that extinguishing arc carbon ball [10] bears electric arc.
2, section insulator according to claim 1 is characterized in that joint wire clamp ［ 6 ］ and copper contact wire link.
3, section insulator according to claim 1, it is characterized in that extinguishing arc horn gap ［ 4 ］ comprises long extinction angle ［ 11 ］ and short extinction angle ［ 12 ］, long extinction angle ［ 11 ］ all installs the extinguishing arc carbon ball ［ 10 ］ that adopts the graphitization electrical carbon material additional at an upper portion thereof with short extinction angle ［ 12 ］.
4, section insulator according to claim 1 is characterized in that long extinction angle ［ 11 ］ and short extinction angle ［ 12 ］ and the angle of horizontal surface are 35 °～50 °.
5, section insulator according to claim 1 is characterized in that distance 〉=500 millimeter at long extinction angle ［ 11 ］ top extinguishing arc carbon ball ［ 10 ］ center and short extinction angle ［ 12 ］ top extinguishing arc carbon ball ［ 10 ］ center.
6, section insulator according to claim 1 is characterized in that are-tight load bar ［ 13 ］ is made up of polytetrafluoroethylene sheath ［ 14 ］ and load bar ［ 15 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91224668 CN2098406U (en) | 1991-09-12 | 1991-09-12 | Arc-extinguishing sectional insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91224668 CN2098406U (en) | 1991-09-12 | 1991-09-12 | Arc-extinguishing sectional insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2098406U true CN2098406U (en) | 1992-03-11 |
Family
ID=4931095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91224668 Expired - Lifetime CN2098406U (en) | 1991-09-12 | 1991-09-12 | Arc-extinguishing sectional insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2098406U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612894B (en) * | 2008-06-25 | 2011-05-11 | 中国北车集团大同电力机车有限责任公司 | Electric locomotive pantograph arc blowout device |
| CN103419681A (en) * | 2013-08-05 | 2013-12-04 | 西南交通大学 | Structure for preventing flash burn of rail insulation joint of electrified railway |
| CN112946436A (en) * | 2021-02-02 | 2021-06-11 | 成都国铁电气设备有限公司 | Online intelligent detection method for arc extinction and disconnection of vehicle-mounted contact net insulator |
-
1991
- 1991-09-12 CN CN 91224668 patent/CN2098406U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101612894B (en) * | 2008-06-25 | 2011-05-11 | 中国北车集团大同电力机车有限责任公司 | Electric locomotive pantograph arc blowout device |
| CN103419681A (en) * | 2013-08-05 | 2013-12-04 | 西南交通大学 | Structure for preventing flash burn of rail insulation joint of electrified railway |
| CN112946436A (en) * | 2021-02-02 | 2021-06-11 | 成都国铁电气设备有限公司 | Online intelligent detection method for arc extinction and disconnection of vehicle-mounted contact net insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |