CN104681346A - A linkage for actuating a disconnector switch blade for synchronising a SBS with disconnector switch of RMU - Google Patents
A linkage for actuating a disconnector switch blade for synchronising a SBS with disconnector switch of RMU Download PDFInfo
- Publication number
- CN104681346A CN104681346A CN201410708117.5A CN201410708117A CN104681346A CN 104681346 A CN104681346 A CN 104681346A CN 201410708117 A CN201410708117 A CN 201410708117A CN 104681346 A CN104681346 A CN 104681346A
- Authority
- CN
- China
- Prior art keywords
- switch
- linkage
- connecting piece
- isolating switch
- strip
- 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.)
- Granted
Links
Classifications
-
- 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
- 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
- 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 linkage for actuating a disconnector switch blade for synchronising a SBS with a disconnector switch of an RMU in order to integrate a Shunt Breaking System (SBS) in existing disconnector switch of Ring Main Unit (RMU) which fulfills synchronization requirement of the SBS with the disconnector switch. The linkage includes a plurality of follower links connected to an offset link disposed over a drive shaft, a drive link for transferring mechanism energy to the plurality of follower links through a sliding pin joint which is directly pivoted to the offset link for ensuring the synchronization within the disconnector switch and the SBS, wherein the linkage enlarges the stroke of the disconnector switch blade during switch open and switch closed operations and maintains the stroke same as the disconnector switch mechanism during switch earth operation. The offset link is fixed over the drive shaft at offset distance from centre of the drive shaft to provide enlarged stroke of the disconnector switch blade in switch closed and switch open operations.
Description
Technical field
The present invention relates generally to linkage design (transmission mechanism), and it is used as the actuating device of isolating switch plug-in strip.Especially, the present invention relates to the linkage design in the existing isolating switch in order to SBS being incorporated into ring main unit (RMU), it meets the synchronism requirement being incorporated to and specifying the SBS-in isolating switch to shunt open-circuit system (Shunt Breaking System).
Background technology
The supply line of electric loading to be controlled is provided with at least one switching device usually.Typically, switching device comprises the paired contact for each phase place, and these paired contacts can move relative to each other to carry out switch to load.The actuating of contact can be performed in a different manner.Especially, to being such as security purpose and be used as some high-power switchgear device (being generally used for being greater than 600A) of circuit introducer, need high electronic intensity, and contact is driven by the lever system being connected to rotating shaft.Further, rotating shaft itself is activated by toggle mechanism (tumbler mechanism).
Usually, in switching manipulation process, produce little arc discharge, 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 proposal, the disconnection of electric current is at vacuum interrupter but not realize in dielectric.In order to adapt to this change, need the existing isolating switch be used at present in RMU and shunting open-circuit system to combine.The Basic Design of SBS is contained by patent EP2182536 and EP2479769.
The movable contact of isolating switch obtains required energy by the intermediate linkage comprising rotating driveshaft and coupling from mechanism.Energy and stroke are delivered to the movable plug-in strip provided by toggle mechanism by existing four-bar linkage design.The current fixed journey system for the mechanism in RMU has the stroke of 40 degree, and SBS is designed to the range demands of 50 degree.
SBS is incorporated into the change needing in existing isolating switch to design existing four-bar linkage.This causes the increase of significantly changing of fixed position and coupling connecting piece size.This so change linkage angle, and cause sizable lifting of the energy requirement of driving mechanism.
In view of the above discussion, can recognize, need to provide kinematic adjustment to drive the new SBS of RMU and existing isolating switch and mechanical chain.
Summary of the invention
Main purpose of the present invention is to provide a kind of linkage design, to be incorporated into by SBS in the existing isolating switch of RMU, it can meet the synchronous requirement being incorporated into and specifying the SBS-in isolating switch to shunt open-circuit system.
Another object of the present invention is to provide a kind of linkage design, SBS is incorporated in the existing isolating switch of RMU, which provides by transmitting the delivery stroke that is suitable for the expansion operating SBS and reuse the solution of existing mechanism.
Another object of the present invention is to provide a kind of linkage design, SBS is incorporated in the existing isolating switch of RMU, it can meet Critical to quality (CTQ) requirement of SBS, and such as TRV position, minimum speed and vacuum interrupter (VI) are opened.
Another object of the present invention is to provide a kind of linkage design, to be incorporated into by SBS in the existing isolating switch of RMU, it ensures the realization of instantaneous position by moving the plug-in strip of isolating switch with the rate request expected.
Another object of the present invention is to provide a kind of linkage design, to be incorporated into by SBS in the existing isolating switch of RMU, its structure is simple and guarantee accurate operation.
To achieve these goals, the present invention discloses a kind of linkage for activating isolating switch plug-in strip, so that will shunt open-circuit system (SBS) is incorporated in the existing isolating switch of ring main unit (RMU), this linkage meets the synchronous requirement of the SBS be incorporated in described isolating switch.This linkage comprises: multiple driven connecting piece, is connected to setting biased connecting piece on the driving shaft; Drive connecting piece, for mechanism energy is delivered to multiple driven connecting piece by the sliding pin joint being directly pivotally attached to biased connecting piece, synchronous with what guarantee in isolating switch and SBS, wherein this linkage expands the stroke of isolating switch plug-in strip in switch opens operation and switch closed procedure process, and keeps the stroke identical with isolating switch mechanism in the operating process of switch ground connection.
In one embodiment, biased connecting piece is fixed on the driving shaft at the amount of bias place, center one apart from driving shaft, to provide the stroke of the expansion of isolating switch plug-in strip in switch closed procedure and switch opens operation.
In one embodiment, drive connecting piece to comprise slit, and be used to the isolating switch plug-in strip driving linkage and the isolating switch formed by biased connecting piece.
In one embodiment, biased connecting piece is configured to the speed by guiding the pivotal pin in the slit driving connecting piece to regulate isolating switch plug-in strip.
In one embodiment, this linkage is configured to make maximise speed in switch opens operation and switch closed procedure process of isolating switch plug-in strip.
The generality that should be appreciated that before carrying out current embodiment of the present invention describes and detailed description below is all intended to the general introduction that is provided for understanding essence of the present invention as requested and characteristic or framework.Accompanying drawing is included as provides a further understanding of the present invention, and is merged in and forms the part of this specification.Accompanying drawing illustrates various embodiments of the present invention, and is used from explanatory note one and explains principle of the present invention and operation.
Accompanying drawing explanation
By reference to such as illustrative exemplary embodiment of the present in the accompanying drawings, above-mentioned and further feature of the present invention and other advantage will become better understood and will become more obviously, wherein
Fig. 1 schematically illustrates linkage design according to an embodiment of the invention, biased connecting piece is on the driving shaft fixed at its offset or dish place, center one being included in distance driving shaft, closes the stroke with the expansion in switch opens operation to provide plug-in strip at switch;
Fig. 2 illustrates the driving connecting piece being connected to rotating driveshaft according to an embodiment of the invention, and it is modified to has slit features;
Fig. 3 illustrates according to an embodiment of the invention by manufacturing the biased connecting piece that slit is formed with radii fixus, and it is placed on away from shaft center one offset or dish place and is placed as the stationary part on rotating driveshaft;
Fig. 4-6 schematically illustrates respectively and closes according to an embodiment of the invention, opens and earthing position;
Fig. 7-9 illustrates respectively and closes according to an embodiment of the invention, opens and earthing position;
Figure 10-11 illustrates according to an embodiment of the invention for the output that ad-hoc location and the size of linkage record in displacement and hodograph.
Embodiment
Now with reference to such as illustrative exemplary embodiment of the present invention in the accompanying drawings.In the conceived case, identical Reference numeral will be used for representing same or analogous part.
Disclosed herein is linkage design for being incorporated into by SBS in the existing isolating switch of RMU, and it meets the synchronism requirement that the SBS-be incorporated in isolating switch shunts open-circuit system.
This is implemented by forming four-bar linkage, and it has placement other biased connecting piece on the driving shaft.Drive connecting piece to pass through the directly sliding pin joint be pivotally attached on biased connecting piece and mechanism energy is delivered to four-bar linkage.The speed of biased connecting piece by guiding the pivotal pin in the slit driving connecting piece to regulate movable plug-in strip.The linkage design optimized guarantees the synchronism of the expectation between isolating switch and SBS.
Driving mechanism in switch opens operation, switch closed procedure and the operating process of switch ground connection with fixed journey system disconnecting switch operation rotating shaft.This linkage design expands the stroke of movable plug-in strip in switch opens operation and switch closed procedure process, and keeps the maximal rate of movable contact.But in the operating process of switch ground connection, this linkage design keeps the stroke identical with mechanism.
Fig. 1 schematically illustrates this according to an embodiment of the invention linkage design 100, it comprises biased connecting piece 104, biased connecting piece 104 is fixed on the driving shaft at the offset or dish place, center one apart from driving shaft, to provide the stroke of the expansion of plug-in strip in switch closed procedure and switch opens operation.
As shown in Figure 2, connecting piece 102 is driven to be connected to rotating driveshaft 202.Drive connecting piece 102 to comprise slit, and be used to the movable contact driving four-bar linkage and the isolating switch formed by biased connecting piece 104.
5th other connecting piece (biased connecting piece) 104 is fixed on the offset or dish place, center one apart from driving shaft 202, and it is articulated in the end at the abaxial center of slit when make position.As shown in Figure 3, biased connecting piece 104 has the slit of radii fixus by manufacture and is formed, and it is placed on away from shaft center one offset or dish place and is placed as the stationary part on rotating driveshaft.
Connecting piece 102 is driven to receive input from the toggle mechanism being designed to 40 degree of strokes.Linkage design at the movable contact of starting stage rotary isolation switch more quickly, to arrive TRV position more quickly.Further, linkage design guarantees the Movement transmit to SBS, to meet the synchronization criterion in CTQ stage, opening speed and total VI of such as TRV distance, minimum vacuum interrupter (VI) open.Movable plug-in strip is expert at and enters the CTQ stage after the stroke of about 30-35%, and its continue until 90% stroke.Movable contact is about 35-40% in the duration in CTQ stage.Movable plug-in strip is at least three times high of the average speed in the starting stage at the average speed in CTQ stage.
Fig. 4-6 and Fig. 7-9 illustrates make position, open position and earthing position respectively according to one embodiment of the invention.When driving shaft rotates 40 degree, delivery stroke in slit, and is transformed into 50 degree by the slide pivot pin of biased connecting piece 404.
Aggregate velocity and the position of the drive mechanism energy decision movable contact of movable contact is delivered to by four-bar linkage.By the offset position of linkage stroke and the speed of Angle ambiguity movable contact.This can be optimized by the theoretical modeling performed by Pro/Mechanism.The modulating output recorded in displacement and hodograph is analyzed, thus the position of linkage and size are finalized.Figure 10-11 according to one embodiment of the invention illustrate record in displacement and hodograph for the ad-hoc location of linkage and the output of size.
Further, design driven connecting piece (406,708), biased connecting piece (404,706), coupling (402,704), driven connecting piece/movable contact (410,702) is come based on the free space in RMU.
Sliding pin joint reduces wear and friction loss, and this causes higher accuracy and reliability.For the biased connecting piece structure of the bias radial direction form of slits around driving shaft is simple, and guarantee the accurate operation of linkage design.Further, biased connecting piece forms parallelogram in four-bar linkage, and this contributes to carrying out effective moment of torsion/Mobile Transmission to movable contact.
The alternative realizing expected result also can by putting together the driven connecting piece/movable contact of biased connecting piece and isolating switch and accomplish.Slit can be fabricated in driven connecting piece, and is articulated by sliding pin joint and biased connecting piece.Because driven connecting piece/movable contact is current carrying element, in the resin portion that therefore these parts need the portion of being fixed on to conduct electricity.The advantage of the dielectric distance improved between the biased connecting piece be fixed in resin portion also can provide relatively mutually and relatively.
It should be understood by one skilled in the art that and can make various modifications and variations without departing from the scope and spirit of the present invention.Therefore, the invention is intended to cover this amendment and modification, as long as this amendment and modification are in the scope of appended claims and equivalent thereof.
Claims (5)
1. one kind for activating the linkage of isolating switch plug-in strip, so that will shunt open-circuit system (SBS) is incorporated in the existing isolating switch of ring main unit (RMU), this linkage meets the synchronous requirement of the described SBS be incorporated in described isolating switch, and described linkage comprises:
Multiple driven connecting piece, is connected to setting biased connecting piece on the driving shaft;
Drive connecting piece, for mechanism energy is delivered to described multiple driven connecting piece by the sliding pin joint being directly pivotally attached to described biased connecting piece, synchronous with what guarantee in described isolating switch and described SBS,
Wherein said linkage expands the stroke of described isolating switch plug-in strip in switch opens operation and switch closed procedure process, and keeps the stroke identical with described isolating switch mechanism in the operating process of switch ground connection.
2. as claimed in claim 1 for activating the linkage of isolating switch plug-in strip, wherein said biased connecting piece is fixed on described driving shaft at the offset or dish place, center one apart from described driving shaft, to provide the stroke of the expansion of plug-in strip in switch closed procedure and switch opens operation.
3. as claimed in claim 1 for activating the linkage of isolating switch plug-in strip, wherein said driving connecting piece comprises slit, and is used to the isolating switch plug-in strip driving described linkage and the described isolating switch formed by described biased connecting piece.
4. as claimed in claim 3 for activating the linkage of isolating switch plug-in strip, described biased connecting piece is configured to the speed by guiding the pivotal pin in the slit of described driving connecting piece to regulate described isolating switch plug-in strip.
5. as claimed in claim 1 for activating the linkage of isolating switch plug-in strip, what be configured to make described isolating switch plug-in strip in switch opens operation and switch closed procedure process is maximise speed.
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 true CN104681346A (en) | 2015-06-03 |
| CN104681346B 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 |
| CN104681346B (en) | 2018-10-26 |
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