CN107658173A - A kind of electric railway disconnecting switch - Google Patents
A kind of electric railway disconnecting switch Download PDFInfo
- Publication number
- CN107658173A CN107658173A CN201710980619.7A CN201710980619A CN107658173A CN 107658173 A CN107658173 A CN 107658173A CN 201710980619 A CN201710980619 A CN 201710980619A CN 107658173 A CN107658173 A CN 107658173A
- Authority
- CN
- China
- Prior art keywords
- static contact
- earthing
- insulation column
- connecting rod
- disconnecting switch
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
Abstract
The invention discloses a kind of electric railway disconnecting switch, including base and two insulation columns being located on base, the top of insulation column laterally sets up the static contact and isolation knife towards each other and being separately fixed on an insulation column, the front end of isolation knife is provided with the conducting rod of static contact, conducting rod front end is arranged to the arc structure outwards expanded, earthing is additionally provided with insulation column, grounded pole is set below earthing, grounded pole is set up by rotary shaft and can be rotated up contacting earthing, linked between two insulation columns by first connecting rod, rotary shaft is linked by second connecting rod and one of insulation column.In the present invention, insulation column, which rotates, makes static contact and isolation knife separately carry out separating brake, but not power off at once, static contact still contacts with conducting rod, it is drifted apart from after turning over certain radian, ensure that will not arcing electric discharge, and earthing and grounded pole linkage rotation and are carried to simultaneously and complete reliable ground together when rotating separating brake.
Description
Technical field
The present invention relates to field of switch equipment, and in particular to a kind of electric railway disconnecting switch.
Background technology
The traction power of electric railway is electric locomotive, and locomotive is supplied without the energy, the required energy by electric propulsion in itself
Electric system provides.Tractive power supply system is primarily referred to as traction substation and contact net two large divisions, and electric substation is located near railway,
The electric current that it will send from power plant through high voltage transmission line, it is sent on the contact net in railway overhead, contact net is to electric locomotive
The equipment for directly conveying electric energy, along the both sides of railway line, sets up row's pillar, suspended on metal wire above, as contact
Net, it can also be counted as the artery of electric railway.Electric locomotive obtains electric energy using the pantograph of roof from contact net,
Tractor-trailer train is run.Network planning is formed with two kinds of DC system and AC system by the electric current of contact net, DC system be by high pressure,
Three-phase power supplies direct current after traction substation decompression and rectification to contact net, and this is a kind of earliest electric current system of development, is arrived
Less use after the 1950s, AC system are that high pressure, three-phase power are depressured in electric substation and after becoming single-phase, to
Contact net supplies alternating current.AC system supply voltage is higher, have developed rapidly.The network planning of China's electric railway is opened from one
Begin just to use 25 kilovolts of AC systems of single phase industrial frequence (50 hertz), this is advantageously selected for the development of electric railway from now on.
Different with the railway that traditional steam locomotive or diesel locomotive tractor-trailer train are run, electric railway refers to from outside
Power supply and tractive power supply system obtain electric energy, and by the railway of electric locomotive traction train operation, it includes electric locomotive, engineering
The equipment such as facility, tractive power supply system, various electric devices and corresponding railway communication, signal.Electric railway has fortune
The advantages that Movement Capabilities are big, travel speed is fast, the consumption energy is few, operation cost is low, good operation conditions, the main line railway big to freight volume
Electrification is realized with the mountain area main line railway with abrupt slope, major long tunnel, technically, economically has obvious superiority.
The railway of traction power is used as by the use of electric locomotive.
Electric railway disconnecting switch is a kind of switching switchgear applied in electric railway, for electrification
In railway contact net system, for when there is voltage non-loaded division circuit be used, and the high voltage bus to being overhauled, breaker
With powered high-tension line carry out electrical equipment and isolate to be used Deng electric equipment.
The content of the invention
It is an object of the invention to provide a kind of electric railway disconnecting switch, to solve what is proposed in above-mentioned background technology
Problem.
To achieve the above object, the present invention provides following technical scheme：A kind of electric railway disconnecting switch, including：
Base, its both sides are respectively provided with a bearing block；
Insulation column, it has two, is vertically arranged at respectively in a bearing block and free to rotate；
Main conductive structure, it includes the static contact and isolation knife that are separately fixed at an insulation column top, described
Static contact and the isolation knife are set towards each other and the two is in contact, and the front end of the isolation knife is provided with the static contact
Conducting rod, one end of the conducting rod towards the static contact is arranged to outward arc-shaped, two insulation branch
A terminal plate, the static contact and a terminal plate electrical connection being adjacent to, the isolation are respectively provided with above post
Knife and the conducting rod and another described terminal plate electrical connection away from the static contact；
Earthing mechanism, it include being arranged on the insulation column where the static contact and with the insulation column and
The vertical earthing of the static contact, the earthing electrically connect with the terminal plate close to the static contact side, institute
The lower section for stating earthing is provided with grounded pole, and the lower end of the grounded pole, which is perpendicularly fixed at, is erected at turning for the base side
On moving axis, the grounded pole can be in contact its upper end after being rotated with the rotary shaft with the earthing；
Link gear, it includes first connecting rod and second connecting rod, and the first connecting rod is erected on two insulation columns
Between be used to make the two linkage rotation, the second connecting rod is erected on described in the rotary shaft and one away from the rotary shaft
It is used to drag the rotary shaft rotation between insulation column.
Preferably, for described electric railway disconnecting switch, the top of the insulation column is equipped with tool rest, described
Static contact, isolation knife and earthing are arranged on the tool rest.
Preferably, for described electric railway disconnecting switch, the tool rest, which is provided with, protects the driven motor structure
Case including shield.
Preferably, for described electric railway disconnecting switch, the front end of the earthing be provided be easy to be hooked it is described
Grounded pole has contact with, and the top of the grounded pole, which is provided with, to be easy to be linked into the peg having contact with.
Preferably, for described electric railway disconnecting switch, rotating fins are respectively and fixedly provided with the insulation column, institute
State and connected between first connecting rod and the second connecting rod and insulation column by the rotating fins.
Preferably, for described electric railway disconnecting switch, the first connecting rod and the second connecting rod with it is described
Connected between rotating fins by turning joint.
Preferably, it is provided with silica gel full skirt for described electric railway disconnecting switch, the insulation column.
Preferably, for described electric railway disconnecting switch, the base is channel steel base.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, in closing position, isolation knife is in contact disconnecting switch provided by the invention with the static contact on terminal plate, rises
Electric action.When mechanism drive disconnecting switch separating brake when, isolation knife separates with static contact, at this moment conducting rod still with static contact phase
Connecing, play electric action, the front end of conducting rod is arranged to arc structure, when isolation knife continues to be transferred to certain angle, conducting rod
The quickly not arcing between static contact, so as to avoid operation operator mouth, when last isolation knife goes to 90 ° of positions, earthing with
Grounded pole connects, and ensure that reliable ground, completes sub-switching operation.
2nd, disconnecting switch provided by the invention is used for contact nets in electrified railways system, for there is the voltage non-loaded time-division
Circuit is closed to be used, and the electric equipment such as the high voltage bus to being overhauled, breaker and powered high-tension line carry out electrical equipment every
From being used, wherein the disconnecting switch of anti-fouling type can meet the requirement of heavy pollution area user, and can efficiently solve and keep apart
Close the pollution flashover problem occurred in operation.Disconnecting switch realized with grounded part using mechanical interlocking disk, when disconnecting switch again
During closing position, the fan-shaped lock collar limitation earthed switch of earthed switch rotary shaft closes a floodgate, and switch main body uses pipe drot gfasplng mechanism, connect
Line end is fixedly connected using soft conductive strips, and conductive contact is functional, can adapted manual/electric operating mechanism, realize a distant place just
Ground operates.
Brief description of the drawings
Fig. 1 is the front view of the present invention,
Fig. 2 is the top view of the present invention,
Fig. 3 is the side view of the present invention,
Wherein, 1, base, 2, bearing block, 3, insulation column, 4, static contact, 5, isolation knife, 6, conducting rod, 7, terminal plate,
8th, earthing, 9, grounded pole, 10, rotary shaft, 11, first connecting rod, 12, second connecting rod, 13, tool rest, 14, case, 15, rotation
Fin, 16, turning joint.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1,2,3 are referred to, the present invention provides a kind of technical scheme：A kind of electric railway disconnecting switch, including：
Base 1, its both sides are respectively provided with a bearing block 2；
Insulation column 3, it has two, is vertically arranged at respectively in a bearing block 2 and free to rotate；
Main conductive structure, it includes the static contact 4 and isolation knife 5 that are separately fixed at a top of insulation column 3, institute
State that static contact 4 and the isolation knife 5 are set towards each other and the two is in contact, the front end of the isolation knife 5 is provided with described
The conducting rod 6 of static contact 4, one end of the conducting rod 6 towards the static contact 4 are arranged to outward arc-shaped, two
The top of the insulation column 3 is respectively provided with a terminal plate 7, the static contact 4 and an electricity of terminal plate 7 being adjacent to
Another described terminal plate 7 of connection, the isolation knife 5 and the conducting rod 6 and the remote static contact 4 electrically connects；Isolation
In closing position, isolation knife 5 is in contact switch with the static contact 4 on terminal plate 7, plays electric action.Isolate when mechanism drives
When switching separating brake, isolation knife 5 separates with static contact 4, and at this moment conducting rod 6 still connects with static contact 4, plays electric action, Bu Huizhi
Connect disconnection, and the front end of conducting rod 6 is arranged to arc structure, when isolation knife 5 continues to be transferred to certain angle, conducting rod 6 with
It can be just gradually disengaged between static contact 4, being disconnected this avoid switching moments causes arcing to be discharged, and it also avoid operation operator
Mouthful.
Earthing mechanism, it include being arranged on the insulation column 3 where the static contact 4 and with the insulation column
3 and the vertical earthing 8 of the static contact 4, the earthing 8 and the electricity of the terminal plate 7 close to the side of static contact 4
Connection, the lower section of the earthing 8 are provided with grounded pole 9, and the lower end of the grounded pole 9, which is perpendicularly fixed at, is erected at the bottom
In the rotary shaft 10 of 1 side of seat, its upper end can be with the earthing 8 after being rotated with the rotary shaft 10 for the grounded pole 9
It is in contact；During switch carries out rotation separating brake, earthing 8 also rotates with insulation column 3, while grounded pole 9 is turning
Also certain angle is rotated up under the drive of moving axis 10, when insulation column 3 is rotated by 90 °, earthing 8 just with grounded pole 9
Upper end hang together and be connected, complete reliable ground connection operation.
Link gear, it includes first connecting rod 11 and second connecting rod 12, the first connecting rod 11 be erected on two it is described absolutely
It is used to make the two linkage rotation between edge pillar 3, the second connecting rod 13 is erected on the rotary shaft 10 and away from the rotation
Rotated between one insulation column 3 of axle 10 for dragging the rotary shaft 10.Link gear is by electric or hand operation
Mechanism drives one of insulation column 3 to rotate, so as to drive another insulation column 3 to rotate by first connecting rod 11, meanwhile,
Second connecting rod 12 can be dragged in certain angle, one end dragging rotary shaft 10 that second connecting rod 12 is connected with rotary shaft 10, makes to turn
Moving axis 10 rotates, and rotates grounded pole 9 up.
The top of the insulation column 3 is equipped with tool rest 13, and the static contact 4, isolation knife 5 and earthing 8 are arranged at
On the tool rest 13.
The tool rest 13 is provided with the case 14 including the driven motor structure is protected.
The front end of the earthing 8, which is provided with, to be easy to be hooked having contact with for the grounded pole 9, the top of the grounded pole 9
Provided with being easy to be linked into the peg having contact with.
Be respectively and fixedly provided with rotating fins 15 on the insulation column 3, the first connecting rod 11 and the second connecting rod 12 with absolutely
Connected between edge pillar 3 by the rotating fins 15.
Connected between the first connecting rod 11 and the second connecting rod 12 and the rotating fins 15 by turning joint 16.
The insulation column 3 is provided with silica gel full skirt.
The base 1 is channel steel base.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
- A kind of 1. electric railway disconnecting switch, it is characterised in that including：Base, its both sides are respectively provided with a bearing block；Insulation column, it has two, is vertically arranged at respectively in a bearing block and free to rotate；Main conductive structure, it includes the static contact and isolation knife that are separately fixed at an insulation column top, the stationary contact Head and the isolation knife are set towards each other and the two is in contact, and the front end of the isolation knife is provided with leading for the static contact Electric pole, one end of the conducting rod towards the static contact are arranged to outward arc-shaped, two insulation columns Top is respectively provided with a terminal plate, the static contact and a terminal plate electrical connection being adjacent to, the isolation knife and The conducting rod and another described terminal plate electrical connection away from the static contact；Earthing mechanism, it include being arranged on the insulation column where the static contact and with the insulation column and described The vertical earthing of static contact, the earthing electrically connects with the terminal plate close to the static contact side, described to connect The lower section of earthing knife-switch is provided with grounded pole, and the lower end of the grounded pole is perpendicularly fixed at the rotary shaft for being erected at the base side On, the grounded pole can be in contact its upper end after being rotated with the rotary shaft with the earthing；Link gear, it includes first connecting rod and second connecting rod, and the first connecting rod is erected between two insulation columns For making the two linkage rotation, the second connecting rod is erected on the rotary shaft and an insulation away from the rotary shaft It is used to drag the rotary shaft rotation between pillar.
- 2. electric railway disconnecting switch according to claim 1, it is characterised in that the top of the insulation column is all provided with There is tool rest, the static contact, isolation knife and earthing are arranged on the tool rest.
- 3. electric railway disconnecting switch according to claim 1 or 2, it is characterised in that the tool rest is provided with institute State the case including the protection of driven motor structure.
- 4. electric railway disconnecting switch according to claim 1, it is characterised in that the front end of the earthing is provided with just In being hooked having contact with for the grounded pole, the top of the grounded pole, which is provided with, to be easy to be linked into the peg having contact with.
- 5. electric railway disconnecting switch according to claim 1, it is characterised in that be respectively and fixedly provided with the insulation column Rotating fins, connected between the first connecting rod and the second connecting rod and insulation column by the rotating fins.
- 6. electric railway disconnecting switch according to claim 1 or 5, it is characterised in that the first connecting rod and described Connected between second connecting rod and the rotating fins by turning joint.
- 7. electric railway disconnecting switch according to claim 1, it is characterised in that the insulation column is provided with silica gel Full skirt.
- 8. electric railway disconnecting switch according to claim 1, it is characterised in that the base is channel steel base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980619.7A CN107658173A (en) | 2017-10-19 | 2017-10-19 | A kind of electric railway disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980619.7A CN107658173A (en) | 2017-10-19 | 2017-10-19 | A kind of electric railway disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658173A true CN107658173A (en) | 2018-02-02 |
Family
ID=61119190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710980619.7A Pending CN107658173A (en) | 2017-10-19 | 2017-10-19 | A kind of electric railway disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107658173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332006A (en) * | 2022-10-12 | 2022-11-11 | 南通弘峰机电有限公司 | Arc extinguishing device of direct current isolating switch in cabinet |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3227830A (en) * | 1963-11-26 | 1966-01-04 | Allis Chalmers Mfg Co | Electrostatically shielding contacts for high potential switch |
| DE2009759A1 (en) * | 1970-03-03 | 1971-09-23 | Ruhrtal Gmbh | Disconnector |
| DE8915586U1 (en) * | 1989-05-22 | 1991-02-07 | Ruhrtal Elektrizitaetsgesellschaft Hartig Gmbh & Co, 4300 Essen, De | |
| CN2735527Y (en) * | 2004-08-12 | 2005-10-19 | 阎淼江 | Contact assembly for high-voltage isolating switch |
| CN201576603U (en) * | 2009-12-14 | 2010-09-08 | 山东泰开隔离开关有限公司 | Dual-pole horizontal rotary type outdoor three-phase high-voltage alternating current isolating switch |
| CN102034639A (en) * | 2011-01-20 | 2011-04-27 | 川铁电气（天津）集团有限公司 | Outdoor high-voltage AC three-pole double-earthing isolating switch |
| CN201956257U (en) * | 2011-01-20 | 2011-08-31 | 川铁电气（天津）集团有限公司 | Outdoor alternating-current high-voltage disconnecting switch |
| CN202159619U (en) * | 2011-07-20 | 2012-03-07 | 苏州苏高智能电气有限公司 | Main grounding knifeswitch linkage for outdoor high voltage AC isolation switch |
| CN202473720U (en) * | 2012-03-27 | 2012-10-03 | 湘潭高压电器有限公司 | Outdoor single-pole isolating switch |
| CN203573889U (en) * | 2013-07-30 | 2014-04-30 | 登高电气有限公司 | Outdoor high-voltage large-current isolating switch |
| CN204067163U (en) * | 2014-09-26 | 2014-12-31 | 国家电网公司 | The isolated switch in outdoor high-voltage one pole limit |
| CN104766753A (en) * | 2015-04-29 | 2015-07-08 | 苏州西脉记忆合金有限公司 | Disconnecting switch contact |
| CN204966366U (en) * | 2015-09-09 | 2016-01-13 | 山东泰开智能配电有限公司 | Novel GW4 isolator |
| CN207381302U (en) * | 2017-10-19 | 2018-05-18 | 武汉倍诺德开关股份有限公司 | A kind of electric railway disconnecting switch |
-
2017
- 2017-10-19 CN CN201710980619.7A patent/CN107658173A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3227830A (en) * | 1963-11-26 | 1966-01-04 | Allis Chalmers Mfg Co | Electrostatically shielding contacts for high potential switch |
| DE2009759A1 (en) * | 1970-03-03 | 1971-09-23 | Ruhrtal Gmbh | Disconnector |
| DE8915586U1 (en) * | 1989-05-22 | 1991-02-07 | Ruhrtal Elektrizitaetsgesellschaft Hartig Gmbh & Co, 4300 Essen, De | |
| CN2735527Y (en) * | 2004-08-12 | 2005-10-19 | 阎淼江 | Contact assembly for high-voltage isolating switch |
| CN201576603U (en) * | 2009-12-14 | 2010-09-08 | 山东泰开隔离开关有限公司 | Dual-pole horizontal rotary type outdoor three-phase high-voltage alternating current isolating switch |
| CN102034639A (en) * | 2011-01-20 | 2011-04-27 | 川铁电气（天津）集团有限公司 | Outdoor high-voltage AC three-pole double-earthing isolating switch |
| CN201956257U (en) * | 2011-01-20 | 2011-08-31 | 川铁电气（天津）集团有限公司 | Outdoor alternating-current high-voltage disconnecting switch |
| CN202159619U (en) * | 2011-07-20 | 2012-03-07 | 苏州苏高智能电气有限公司 | Main grounding knifeswitch linkage for outdoor high voltage AC isolation switch |
| CN202473720U (en) * | 2012-03-27 | 2012-10-03 | 湘潭高压电器有限公司 | Outdoor single-pole isolating switch |
| CN203573889U (en) * | 2013-07-30 | 2014-04-30 | 登高电气有限公司 | Outdoor high-voltage large-current isolating switch |
| CN204067163U (en) * | 2014-09-26 | 2014-12-31 | 国家电网公司 | The isolated switch in outdoor high-voltage one pole limit |
| CN104766753A (en) * | 2015-04-29 | 2015-07-08 | 苏州西脉记忆合金有限公司 | Disconnecting switch contact |
| CN204966366U (en) * | 2015-09-09 | 2016-01-13 | 山东泰开智能配电有限公司 | Novel GW4 isolator |
| CN207381302U (en) * | 2017-10-19 | 2018-05-18 | 武汉倍诺德开关股份有限公司 | A kind of electric railway disconnecting switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115332006A (en) * | 2022-10-12 | 2022-11-11 | 南通弘峰机电有限公司 | Arc extinguishing device of direct current isolating switch in cabinet |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180202 |