CN104681346B - The linkage for the actuating disconnecting switch plug-in strip for keeping SBS synchronous with the disconnecting switch of RMU - Google Patents
The linkage for the actuating disconnecting switch plug-in strip for keeping SBS synchronous with the disconnecting switch of RMU Download PDFInfo
- Publication number
- CN104681346B CN104681346B CN201410708117.5A CN201410708117A CN104681346B CN 104681346 B CN104681346 B CN 104681346B CN 201410708117 A CN201410708117 A CN 201410708117A CN 104681346 B CN104681346 B CN 104681346B
- Authority
- CN
- China
- Prior art keywords
- disconnecting switch
- strip
- linkage
- connecting piece
- plug
- 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.)
- Active
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The present invention discloses a kind of linkage for the actuating disconnecting switch plug-in strip for keeping SBS synchronous with the disconnecting switch of RMU, it is integrated into the existing disconnecting switch of ring main unit (RMU) so that open-circuit system (SBS) will be shunted, meets SBS requirements synchronous with disconnecting switch.The linkage includes：Multiple driven connecting pieces are connected to the biasing connecting piece of setting on the driving shaft；Drive connecting piece, for mechanism energy to be transmitted to multiple driven connecting pieces by being directly pivotally attached to the sliding pin connector of biasing connecting piece, to ensure that disconnecting switch is synchronous in SBS, wherein linkage expands stroke of disconnecting switch plug-in strip during switching opening operation and switching closed procedure, and is grounded in operating process in switch and keeps stroke identical with isolating switch mechanism.Biasing connecting piece is fixed on the driving shaft at one offset or dish of center away from drive shaft, to provide widened stroke of the disconnecting switch plug-in strip in switch closed procedure and in switching opening operation.
Description
Technical field
The present invention relates generally to linkage design (transmission mechanism), is used as the actuation means of disconnecting switch plug-in strip.
Particularly, the present invention relates in order to which SBS to be integrated into the linkage design in the existing disconnecting switch of ring main unit (RMU),
The synchronism for meeting the SBS- shunting open-circuit systems (Shunt Breaking System) being incorporated in specified disconnecting switch is wanted
It asks.
Background technology
The supply line of electric loading to be controlled is generally provided at least one switching device.Typically, switching device
Include the pairs of contact for each phase, these pairs of contacts can move relative to each other to be switched to load.
The actuating of contact can be executed in different ways.Particularly, certain high as circuit introducer to being, for example, security purpose
For Power switching devices (commonly used in being more than 600A), high electronic intensity is needed, and contact is by being connected to rotary shaft
Lever system drives.Further, rotary shaft itself is activated by toggle mechanism (tumbler mechanism).
In general, during switching manipulation, small arc discharge is generated, until plug-in strip rotates to transient recovery voltage
(TRV) distance.The dielectric of such as SF6 is widely used in switching device to eliminate this arc discharge.As a kind of green
Color is proposed, and the disconnection of electric current is realized in vacuum interrupter rather than in dielectric.In order to adapt to this change, needing will be current
It is combined with shunting open-circuit system for the existing disconnecting switch in RMU.The Basic Design of SBS is by patent EP2182536
Cover with EP2479769.
The movable contact of disconnecting switch is obtained by the intermediate linkage including rotation drive shaft and connector from mechanism
Required energy.Energy and stroke are transmitted to the movable plug-in strip provided by toggle mechanism by existing four-bar linkage design.
There is 40 degree of stroke currently used for the fixed journey system of the mechanism in RMU, and SBS is designed to 50 degree of range demands.
SBS is integrated into the change for needing to be designed existing four-bar linkage in existing disconnecting switch.This leads
Cause the increase of fixed position substantially changed with connector connecting piece size.This changes linkage angle in turn, and causes to drive
Sizable promotion of the energy requirement of motivation structure.
In view of the above discussion, it can be appreciated that need to provide kinematic adjustment with drive the new SBS of RMU with it is existing
Disconnecting switch and mechanical chain.
Invention content
The main purpose of the present invention is to provide a kind of linkage designs, so that SBS to be integrated into the existing isolation of RMU
In switch, synchronous the requiring for the SBS- shunting open-circuit systems being incorporated into specified disconnecting switch can be met.
Another object of the present invention is to provide a kind of linkage designs, so that SBS to be integrated into the existing isolation of RMU
In switch, the solution party that existing mechanism is reused by transmitting the widened delivery stroke for being suitable for operating SBS is provided
Case.
Another object of the present invention is to provide a kind of linkage designs, so that SBS to be integrated into the existing isolation of RMU
In switch, Critical to quality (CTQ) requirement of SBS, such as positions TRV, minimum speed and vacuum interrupter can be met
(VI) it opens.
Another object of the present invention is to provide a kind of linkage design, so that SBS to be integrated into the existing isolation of RMU
In switch, ensure the realization of instantaneous position by moving the plug-in strip of disconnecting switch with desired rate request.
It is still another object of the present invention to provide a kind of linkage designs, so that SBS to be integrated into the existing isolation of RMU
It is simple in structure and ensure accurately to run in switch.
To achieve the goals above, the present invention discloses a kind of linkage for activating disconnecting switch plug-in strip, to incite somebody to action
Shunting open-circuit system (SBS) is integrated into the existing disconnecting switch of ring main unit (RMU), linkage satisfaction be incorporated into it is described every
The synchronous of the SBS in the Central Shanxi Plain is left to require.The linkage includes：Multiple driven connecting pieces are connected to and are arranged on the driving shaft
Bias connecting piece；Connecting piece is driven, for transmitting mechanism energy by being directly pivotally attached to the sliding pin connector of biasing connecting piece
To multiple driven connecting pieces, to ensure that disconnecting switch is synchronous in SBS, wherein the linkage expands disconnecting switch plug-in strip and exists
It switchs opening operation and switchs the stroke during closed procedure, and be grounded in operating process in switch and keep and keep apart shutdown
The identical stroke of structure.
In one embodiment, biasing connecting piece is fixed on the driving shaft at one amount of bias of center away from drive shaft,
To provide widened stroke of the disconnecting switch plug-in strip in switch closed procedure and in switching opening operation.
In one embodiment, driving connecting piece includes slit, and be used to drive the linkage formed by biasing connecting piece
The disconnecting switch plug-in strip of device and disconnecting switch.
In one embodiment, biasing connecting piece be configured as by guiding drive connecting piece slit in pivotal pin come
Adjust the speed of disconnecting switch plug-in strip.
In one embodiment, which is configured as that disconnecting switch plug-in strip is made to close in switch opening operation and switch
Speed during closing operation maximizes.
It should be appreciated that being described and following detailed description to the generality before the current embodiment progress of the present invention
It is intended to general introduction or the frame that essence and characteristic for understanding the invention as claimed are provided.Attached drawing is included as offer pair
The present invention's further understands, and is incorporated into and forms the part of specification.Attached drawing illustrates various embodiments of the present invention,
And principle for explaining the present invention and operation together with explanatory note.
Description of the drawings
By reference to the exemplary embodiment of the present as illustrated in the accompanying drawings, above and other feature of the invention and
Further advantage will become better understood and will be apparent, wherein
Fig. 1 schematically illustrates linkage design according to an embodiment of the invention comprising away from drive shaft
Biasing connecting piece on the driving shaft is fixed at one offset or dish of center, and opening operation is closed and switchs in switch to provide plug-in strip
In widened stroke；
Fig. 2 illustrates the driving connecting piece according to an embodiment of the invention for being connected to rotation drive shaft, is modified to have
There are slit features；
Fig. 3 illustrates the biasing connecting piece according to an embodiment of the invention by manufacturing slit formation with radii fixus,
It is placed at one offset or dish of separate shaft center and is placed as the stationary part in rotation drive shaft；
Fig. 4-6 respectively schematically illustrates closure, opening and earthing position according to an embodiment of the invention；
Fig. 7-9 illustrates closure, opening and earthing position according to an embodiment of the invention respectively；
Figure 10-11 show the specific position according to an embodiment of the invention for linkage and size in displacement and
The output recorded in hodograph.
Specific implementation mode
Now with reference to the exemplary embodiment of the present invention as illustrated in the accompanying drawings.In the conceived case, identical
Reference numeral will be used to indicate same or analogous part.
Disclosed herein is the linkage design for being integrated into SBS in the existing disconnecting switch of RMU, is met
It is incorporated in the synchronism requirement of the SBS- shunting open-circuit systems in disconnecting switch.
This is implemented by forming four-bar linkage, and there is the other biasing placed on the driving shaft to be coupled
Part.Mechanism energy is transmitted to four-rod linkage dress by driving connecting piece by the sliding pin connector being directly pivotally attached on biasing connecting piece
It sets.Biasing connecting piece drives the pivotal pin in the slit of connecting piece to adjust the speed of movable plug-in strip by guiding.The connection of optimization
Dynamic device design ensures the desired synchronism between disconnecting switch and SBS.
Driving mechanism is operated in switch opening operation, switch closed procedure and switch ground connection operating process with fixed journey system
Disconnecting switch rotary shaft.This linkage design expands movable plug-in strip during switching opening operation and switch closed procedure
Stroke, and also keep movable contact maximum speed.However, being grounded in operating process in switch, this linkage design
Keep stroke identical with mechanism.
Fig. 1 schematically illustrates this linkage design 100 according to an embodiment of the invention comprising biasing connection
Part 104 is tied, biasing connecting piece 104 is fixed on the driving shaft at one offset or dish of center away from drive shaft, to provide plug-in strip
Widened stroke in switch closed procedure and in switching opening operation.
As shown in Fig. 2, driving connecting piece 102 is connected to rotation drive shaft 202.It includes slit to drive connecting piece 102, and
It is used to drive the movable contact of the four-bar linkage and disconnecting switch that are formed by biasing connecting piece 104.
5th other connecting piece (biasing connecting piece) 104 is fixed at one offset or dish of center away from drive shaft 202,
And it is articulated in the end at the center of the separate axis of slit in closed position.As shown in figure 3, biasing connecting piece 104 is logical
It crosses slit of the manufacture with radii fixus and is formed, be placed at one offset or dish of separate shaft center and be placed work
For the stationary part in rotation drive shaft.
Driving connecting piece 102 receives input from the toggle mechanism for being designed to 40 degree of strokes.Linkage design is first
The movable contact of stage beginning more quickly rotary isolation switch, more quickly to reach the positions TRV.Further, linkage
Design ensures that the movement to SBS is transmitted, to meet the synchronization criterion in CTQ stages, such as TRV distances, minimum vacuum interrupter
The opening speed of device (VI) and total VI are opened.Movable plug-in strip enters the CTQ stages after being expert at into the stroke of about 30-35%, and
And it continues until 90% stroke.Movable contact is about 35-40% in the duration in CTQ stages.Movable plug-in strip is in CTQ
The average speed in stage is that at least three times of the average speed in the starting stage are high.
Fig. 4-6 and Fig. 7-9 illustrates closed position, open position and earthing position respectively according to an embodiment of the present invention.
When drive shaft rotates 40 degree, in the slide pivot pin to slit for biasing connecting piece 404, and delivery stroke is transformed into 50 degree.
By four-bar linkage be transmitted to movable contact drive mechanism energy determine movable contact aggregate velocity and
Position.The speed of movable contact is controlled by the offset position and angle of linkage stroke.This can be by by Pro/Mechanism
The theoretical modeling of execution optimizes.The simulation output recorded in displacement and hodograph is analyzed, to the position of linkage
It is finalized with size.What Figure 10-11 showed to record in displacement and hodograph according to an embodiment of the present invention is directed to connection
The output of the specific position and size of dynamic device.
Further, based on the free space in RMU come design driven connecting piece (406,708), biasing connecting piece (404,
706), connector (402,704), driven connecting piece/movable contact (410,702).
It slides pin connector and reduces abrasion and friction loss, this leads to higher accuracy and reliability.To surround drive shaft
Bias radial direction form of slits biasing connecting piece it is simple in structure, and ensure the accurate operation of linkage design.Further,
Biasing connecting piece forms parallelogram in four-bar linkage, this helps to carry out effective torque/shifting to movable contact
Dynamic transmission.
Realize that the alternative of expected result also can be by that will bias driven connecting piece/work of connecting piece and disconnecting switch
Moving contact puts together and accomplishes.Slit can be fabricated in driven connecting piece, and be coupled with biasing by sliding pin connector
Part is articulated.Since driven connecting piece/movable contact is current carrying element, these parts need to be fixed on portion's conduction
Resin portion in.The biasing connecting piece being fixed in resin portion can also be provided between opposite phase and relatively between improve
Dielectric apart from the advantages of.
It should be understood by one skilled in the art that can make without departing from the scope and spirit of the present invention
Various modifications and variations.Therefore, the invention is intended to cover this modifications and variations, as long as this modifications and variations are in appended right
In the range of claim and its equivalent.
Claims (5)
1. a kind of linkage for activating disconnecting switch plug-in strip is integrated into the existing of ring main unit to shunt open-circuit system
In disconnecting switch, which meets the synchronous of the shunting open-circuit system being incorporated into the disconnecting switch and requires, institute
Stating linkage includes：
Multiple driven connecting pieces are connected to the biasing connecting piece of setting on the driving shaft；
Connecting piece is driven, for mechanism energy to be transmitted to institute by being directly pivotally attached to the sliding pin connector of the biasing connecting piece
Multiple driven connecting pieces are stated, to ensure that the disconnecting switch is synchronous in the shunting open-circuit system,
The wherein described linkage expand the disconnecting switch plug-in strip switch opening operation and switch closed procedure during
Stroke, and be grounded in operating process in switch and keep stroke identical with the isolating switch mechanism.
2. the linkage for activating disconnecting switch plug-in strip as described in claim 1, wherein the biasing connecting piece away from
It is fixed in the drive shaft at one offset or dish of center of the drive shaft, to provide plug-in strip in switch closed procedure and open
Close the widened stroke in opening operation.
3. the linkage as described in claim 1 for activating disconnecting switch plug-in strip, wherein the driving connecting piece includes
Slit, and be used to drive the disconnecting switch of the linkage and the disconnecting switch that are formed by the biasing connecting piece
Plug-in strip.
4. the linkage as claimed in claim 3 for activating disconnecting switch plug-in strip, the biasing connecting piece is configured as
The speed of the disconnecting switch plug-in strip is adjusted by guiding the pivotal pin in the slit for driving connecting piece.
5. the linkage as described in claim 1 for activating disconnecting switch plug-in strip is configured as making the disconnecting switch
Speed of plug-in strip during switching opening operation and switching closed procedure maximizes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN1351KO2013 IN2013KO01351A (en) | 2013-11-29 | 2013-11-29 | |
| IN1351/KOL/2013 | 2013-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104681346A CN104681346A (en) | 2015-06-03 |
| CN104681346B true CN104681346B (en) | 2018-10-26 |
Family
ID=51982504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708117.5A Active CN104681346B (en) | 2013-11-29 | 2014-11-28 | The linkage for the actuating disconnecting switch plug-in strip for keeping SBS synchronous with the disconnecting switch of RMU |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2879146A1 (en) |
| CN (1) | CN104681346B (en) |
| IN (1) | IN2013KO01351A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448553A (en) * | 2015-12-08 | 2016-03-30 | 株洲庆云电力机车配件工厂有限公司 | Ground protection switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0612086A1 (en) * | 1993-02-16 | 1994-08-24 | Siemens Aktiengesellschaft | Drive for an electrical power circuit breaker |
| CN202120807U (en) * | 2011-01-07 | 2012-01-18 | 陕西银河电气设备有限公司 | Mechanical locking mechanism |
| CN203134651U (en) * | 2013-03-01 | 2013-08-14 | 无锡飞世龙机电有限公司 | Ring main unit fuse/ground integration type operating mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE696410C (en) * | 1937-12-18 | 1940-09-20 | Aeg | Cam switches with main contacts and several pre- and tear-off contact groups connected in series with them |
| GB1078915A (en) * | 1964-10-13 | 1967-08-09 | James R Kearney Corp Of Canada | Electrical switch |
| US4791250A (en) * | 1987-08-06 | 1988-12-13 | Square D Company | Trip-free, three-link switch assembly |
| DE102005013231B3 (en) * | 2005-03-18 | 2006-09-21 | Siemens Ag | Cam profile switch |
| FR2937176B1 (en) * | 2008-10-14 | 2010-12-03 | Areva T & D Ag | ELECTRIC SWITCHING APPARATUS FOR HIGH OR MEDIUM VOLTAGE OF TWO SWITCHES COMPRISING DRIVING MEANS COMMON TO THE MOBILE CONTACTS OF THE SWITCHES. |
| FR2937786B1 (en) | 2008-10-29 | 2010-12-24 | Areva T & D Sa | CURRENT SWITCH ON AN ELECTRIC LINE COMPRISING A VACUUM BULB |
| FR2970809B1 (en) | 2011-01-25 | 2013-02-22 | Schneider Electric Ind Sas | MEDIUM VOLTAGE CUTTING DEVICE COMPRISING A VACUUM BULB |
-
2013
- 2013-11-29 IN IN1351KO2013 patent/IN2013KO01351A/en unknown
-
2014
- 2014-11-20 EP EP14306844.3A patent/EP2879146A1/en not_active Withdrawn
- 2014-11-28 CN CN201410708117.5A patent/CN104681346B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0612086A1 (en) * | 1993-02-16 | 1994-08-24 | Siemens Aktiengesellschaft | Drive for an electrical power circuit breaker |
| CN202120807U (en) * | 2011-01-07 | 2012-01-18 | 陕西银河电气设备有限公司 | Mechanical locking mechanism |
| CN203134651U (en) * | 2013-03-01 | 2013-08-14 | 无锡飞世龙机电有限公司 | Ring main unit fuse/ground integration type operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| IN2013KO01351A (en) | 2015-06-05 |
| EP2879146A1 (en) | 2015-06-03 |
| CN104681346A (en) | 2015-06-03 |
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