CN101292321A - Latching apparatus for a circuit breaker - Google Patents
Latching apparatus for a circuit breaker Download PDFInfo
- Publication number
- CN101292321A CN101292321A CNA2006800388881A CN200680038888A CN101292321A CN 101292321 A CN101292321 A CN 101292321A CN A2006800388881 A CNA2006800388881 A CN A2006800388881A CN 200680038888 A CN200680038888 A CN 200680038888A CN 101292321 A CN101292321 A CN 101292321A
- Authority
- CN
- China
- Prior art keywords
- pallet
- locker
- switch
- release
- switch contact
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/505—Latching devices between operating and release mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/505—Latching devices between operating and release mechanism
- H01H2071/506—Latching devices between operating and release mechanism using balls or rollers in the latching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
- H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
- H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Breakers (AREA)
Abstract
Latching apparatus (1) for a circuit breaker, which has an energy storage element for separating the movable switching contact from the stationary switching contact, having a latch (6), which is mounted on an axis of rotation (7), for latching the movable switching contact, wherein a magnetic release (16, 17, 18) with a tripping coil (18) for tripping the latch (6) is provided, and wherein the latch (6) has, at a first end (9), a contour which is in the form of a segment of a circle and whose mid-point is spaced apart from the axis of rotation (7) of the latch (6) such that a countertorque with respect to the torques produced by a torsion spring element (13) and the magnetic release (17) is formed by a force acting on the latch (6) by a switch shaft lever (3), which is coupled to the energy storage element.
Description
The present invention relates to a kind of locker that is used for circuit breaker, it has the switch contact that fixing relative this fixed contact with of switch contact can switch on and off motion by means of the drive unit manipulation, an and energy-accumulating element that is used for disconnecting movable switch contact from fixing switch contact, this device also has a pallet that is bearing on the gyroaxis, be used for the movable switch contact of snap close, wherein be provided with one and be used to discharge magnetic release this pallet, that have release coil.
By DD 214 482 a kind of such device is disclosed for example.DD 214 482 discloses a kind of locker that is used for low pressure-circuit breaker, it has a pallet that is bearing on the gyroaxis, the movable switch contact that is used for snap close low pressure-circuit breaker wherein is provided with one and has the magnetic release that release coil is used to discharge described pallet.
DE 40 21 945 C2 disclose another kind of device.DE 40 21 945 C2 disclose a kind of switching device that is used for the open failure electric current, and decision design is used for the transformer branch road of medium voltage switchgear equipment.This device comprises that one has fixing and movable switch contact and the shell as the disconnection spring of energy-accumulating element, when breaking down electric current, this disconnection spring by one as the pallet that can discharge by means of the magnetic release of locker movably switch contact disconnect from fixing switch contact.By current transformer control, this current transformer produces electric current to this magnetic release in the release coil of magnetic release when breaking down electric current, produce magnetic field thus in ferromagnet in this device.On the armature of locker, apply power by this magnetic field.Locker comprises clamping body, and this clamping body prevents briquetting motion in the position of snap close.Discharge clamping body by the magnetic release, thus, disconnect the power of spring action on briquetting and cause this briquetting motion, and the switch contact of switch is disconnected.
Technical problem to be solved by this invention is a kind of locker that starts described type of structure, and the feature of this device is low cost configuration and reliable working method.
Solve thus by this technical problem of the present invention, promptly, pallet has the fan curved profile at first end, its mid point is separated by with the gyroaxis of pallet in this wise, promptly, form a reactive torque for the moment of torsion that is produced by a tension spring element and magnetic release by the power that is acted on by the switch axostylus axostyle on the pallet, wherein, described switch axostylus axostyle is connected with described energy-accumulating element.Such profile by pallet first end, guarantee that in an advantageous manner one produces a torque by energy-accumulating element by the power that the switch axostylus axostyle acts on the pallet on the gyroaxis of pallet, this torque is opposite with the torque direction that is produced by tension spring and magnetic release.
In a preferred form of implementation, pallet has alignment pin at first end, and has tension spring and the armature of attaching troops to a unit at second end.This layout causes the torque of the rotation of pallet on the direction of magnetic release in an advantageous manner, wherein, guides pallet along the switch axostylus axostyle in simple mode by this alignment pin in snap close process or dispose procedure.
In another design of the present invention, the roller of a rotatably support is set on the switch axostylus axostyle.Such roller is advantageously used in to the pallet transmission and is acted on power on the switch axostylus axostyle by energy-accumulating element.
In favourable the further developing of the present invention one, pallet is connected with the release lever device.This release lever device provides a kind of simple possibility to realize mechanically discharging this pallet from the snap close position.
In a preferred form of implementation, the magnetic release has permanent magnet system, and release coil loaded like this,, makes that the magnetic field that is produced by this release coil is opposite with the direction in the magnetic field of permanent magnet system that is.Can when switch contact is closed, apply confining force on the one hand by the magnetic release in an advantageous manner thus, and offset confining force on the other hand, so that by pallet cut-off switch contact to pallet.
In a preferred form of implementation, release coil is loaded an electric current that is guided out by the fault current in the electrical network that has described circuit breaker.Release when realizing fault current in simple mode thus.
In another preferred form of implementation of the present invention, release coil is arranged on a control device front, and the voltage of this control device in having the electrical network of described circuit breaker is that release coil produces a Control current that is suitable for discharging when descending.When requiring circuit breaker to disconnect, thereby can control release coil and the motion of control lock buckle device between snap close position and off-position in simple mode by means of such control device when the voltage reduction.
Will be with reference to the accompanying drawings and by the form of implementation of locker of the present invention next with reference to the description of the drawings explanation.Among the figure:
Fig. 1 represents a kind of form of implementation by locker of the present invention, as to be in the snap close position;
Fig. 2 represents that locker shown in Figure 1 is in the detailed view of open position;
Detailed view when Fig. 3 represents that locker shown in Figure 1 is in the snap close position;
Fig. 4 represents another detailed view by the pallet of locker of the present invention;
The detailed view of Fig. 5 presentation graphs 4.
Fig. 1 shows a kind of locker 1 that is used for circuit breaker, its switch shaft 2 by do not illustrate among figure of a switch axostylus axostyle 3 control, can and figure in the floatless switch contact that do not illustrate equally disconnect and make position between the switch contact that moves.Rotatably support has a roller 5 on the axle 4 of switch axostylus axostyle 3.Pallet 6 is arranged on the supporting member 8 of circuit breaker rotationally by means of axle 7.Pallet 6 has and roller 5 coefficient first ends 9, and with fixture 11 coefficient second ends 10.Be fixed with first end of a tension spring 13 by means of a retaining element 12 at second end 10 of pallet 6.Second end of tension spring 13 is fixed on the gim peg 14 of support component 8.Second end 10 of pallet 6 also has an armature 15.Electromagnetic system 16 is arranged on the support component 8, and this electromagnetic system comprises a permanent magnet 17 and coil 18.Being provided with one at first end 9 of pallet 6 is used for along the alignment pin 19 of the outline 20 guiding pallets 6 of the switch axostylus axostyle 3 of switch shaft 2.Switch shaft 2 also has a retaining element 21, is hinged with one that do not illustrate equally in the drawings, form for disconnecting the energy-accumulating element of energy-storaging spring element on this retaining element, and this energy-accumulating element is used to control the driving mechanism of the movable switch contact of circuit breaker.In such circuit breaker, that switch shaft 2 is subjected to not illustrate among the figure, as to be used to order about switch contact motion driving device controls.
Fig. 2 shows the locker 1 that is in primary importance, and wherein the switch contact of circuit breaker is in open position, and has prepared to carry out the switching process of circuit breaker.The tension spring element 13 of second end 10 that is fixed on pallet 6 is applied to pulling force on the direction of arrow A in this position of pallet 6 to pallet 6, and alignment pin 19 is abutted on the outline 20 of switch shaft 2.Armature 15 separates with electromagnetic system 16, wherein, prevents that by the alignment pin 19 that abuts on the switch axostylus axostyle 3 pallet 6 from rotating around axle 7.
If the switching process of circuit breaker is triggered, will impel switch shaft 2 on the direction of motion arrow B, to clockwise rotate by drive unit together with switch axostylus axostyle 3.In such rotation, alignment pin 19 slides along the outline 20 of switch axostylus axostyle 19, has discharged the switching process of the switch contact of circuit breaker until switch shaft 2 and switch axostylus axostyle 3.Have switch shaft 2 motion clockwise in this switching process of switch axostylus axostyle 3, wherein, last alignment pin 19 leaves outline 20, and the free end of pallet 6 abuts on the roller 5 of switch axostylus axostyle 3, and by the power that applies by tension spring element 13 around axle 7 motion clockwise.In this switching process, the energy-accumulating element that is arranged on the retaining element is compacted.
Fig. 3 shows the locker after the aforementioned switches process of circuit breaker.The switch shaft 2 that has switch axostylus axostyle 3 is positioned at such position, promptly by the driving mechanism that is arranged on the retaining element 21 switch contact of circuit breaker is in the close position on this position.Because switch shaft 2 impels mechanical compliance hour hands that pallet 6 applies by tension spring element 13 to rotate and be arranged in Fig. 3 and the position that has switch shaft 2 snap closes of switch axostylus axostyle 3 around axle 7 in the motion of the direction of motion arrow B, on this position, armature 15 contacts with electromagnetic system 16.First end 9 of pallet 6 is as the lock piece of the roller 5 on switch axostylus axostyle 3 or the switch axostylus axostyle 3.That do not illustrate among the figure and be arranged on the retaining element 21, compacted energy-accumulating element produces backward the power of motion on switch axostylus axostyle 3 or switch shaft 2 in this position in switching process, but this power is not enough to disconnect latching device, because armature 15 contacts with electromagnetic system 16, make to act on power on the pallet 6 greater than by disconnecting the power that accumulator transmits on pallet by switch axostylus axostyle 3 by tension spring element 13 and electromagnetic system 16.
Fig. 4 shows pallet 6 and the power that acts on this pallet 6, and Fig. 5 shows its detailed view.The F that causes by tension spring 13
1Act on the pallet 6, this pallet is bearing on the gyroaxis 7 as fulcrum pivotally.In addition, power F
2 Permanent magnet 17 by electromagnetic system 16 acts on the armature 15 of pallet 6.Belong to each power and determine that by lever arm separately promptly gyroaxis is to the distance h of tension spring application point at the moment of torsion of the fulcrum of gyroaxis 7
1With the distance h of gyroaxis to the application point of magnetic force F2
2Power F3 acts on first end 9 of pallet 6, and this power is passed to the end 9 of pallet 6 by the disconnection accumulator that is connected with switch shaft 2 or switch axostylus axostyle 3.At this such outline of design pawl end 9, that is, and the radial component F of the power of transmitting by switch shaft 3
3The fulcrum of gyroaxis 7 acts on prejudicially relatively, therefore, and by power F
3Form moment of torsion at fulcrum equally, this moment of torsion is with opposite by the torque direction of tension spring element and permanent magnet system.At the fulcrum of gyroaxis 7 by power F
3The reverse moment of torsion that produces is by being equivalent to power F
3Fulcrum and the lever arm h of the distance of application point
3Determine.The moment of torsion that acts on the gyroaxis 7 is:
Apply by the tension spring element: F1 * h1
Apply by permanent magnet system: F2 * h2
Apply by energy-accumulating element: F3 * h3
Because the reverse moment of torsion that produces by power F3 has opposite direction, this reverse moment of torsion has opposite symbol when the moment of torsion addition.
These moments and be applicable to:
F1×h1+F2×h2-F3×h3＞0
Therefore, the holding torque that is caused by power F1 and F2 is greater than the reverse moment of torsion that is produced on pallet 6 by power F3, and pallet 6 anchor switch axles 2 or switch axostylus axostyle 3.
Can produce the complementary field in the magnetic field of a resistance permanent magnet 17 by the coil 18 of electromagnetic system 16, therefore, offset by the electromagnetism opposite force that produces by coil by the power that permanent magnet 17 acts on the armature 15, and electromagnetic system 16 does not in general have power to be applied on the armature 15.
In this case, pallet 6 in the Calculating Torque during Rotary of fulcrum is:
F1×h1-F3×h3＜0
Therefore, act on reverse torque on the pallet 6 greater than the moment that produces by tension spring element 13 by switch axostylus axostyle 3, therefore impelling pallet 6 to rotate about it axle 7 rotates counterclockwise, wherein, first end 9 of pallet 6 slides along roller 5, and discharge this roller at last, the moment that the switch shaft 2 that therefore has a switch axostylus axostyle 3 can be transmitted owing to the disconnection accumulator that is arranged on retaining element 21 equally needle movement when the inverse position of the release of circuit breaker.
The coil 18 of electromagnetic system 16 is connected with regulon with the control unit of circuit breaker, control with regulon again be arranged on circuit breaker in the curtage transducer link to each other.State by curtage sensor monitors circuit breaker.Current sensor for example is designed for the testing electric current or detects the overcurrent that occurs under failure condition.Voltage sensor is designed for monitors the voltage that is applied on the bus-bar.For example, if this voltage surpasses a predetermined threshold value, perhaps so also there is the fault of equipment or circuit breaker in current sensor senses to an overcurrent.Discharge the electric current in the coil 18 of electromagnetic system 16 by the control that is connected with transducer and regulating system, therefore offset the magnetic confining force of permanent magnet 17, and discharge this locker.Therefore, under failure condition, for example when brownout or owing to fault overcurrent, realize the release and the cut-off switch contact of circuit breaker.
Claims (7)
1. locker (1) that is used for circuit breaker, it has the switch contact that the fixing relative switch contact that should fix with of switch contact can switch on and off motion by means of drive unit manipulation, an and energy-accumulating element that is used for disconnecting described movable switch contact from described fixing switch contact, this locker also has one and is bearing in the pallet (6) that is used for the described movable switch contact of snap close on the gyroaxis (7), wherein, be provided with one and have a release coil (18), be used to discharge the magnetic release (16 of described pallet (6), 17,18), it is characterized in that, described pallet (6) has a scalloped profile at first end (9), the gyroaxis (7) of the mid point of this profile and described pallet (6) separates in this wise, that is, make the power that acts on the described pallet (6) by a switch axostylus axostyle (3) that is connected with described energy-accumulating element form a reactive torque for the moment of torsion that produces by a tension spring element (13) and described magnetic release (17).
2. by the described locker of claim 1, it is characterized in that described pallet (6) has an alignment pin (19) and has described tension spring element (13) and armature (15) at second end at first end.
3. by claim 1 or 2 described lockers, it is characterized in that, the roller (5) of a rotatably support is set on described switch axostylus axostyle (3).
4. by one of claim 1 to 3 described locker, it is characterized in that described pallet (6) is connected with a release lever device.
5. by one of claim 1 to 4 described locker, it is characterized in that, described magnetic release has a permanent magnet system (17), and described release coil (18) is loaded like this, that is, feasible magnetic field by this release coil (18) generation is opposite with the direction in the magnetic field of described permanent magnet system (17).
6. by one of claim 1 to 5 described locker (1), it is characterized in that described release coil (18) is loaded an electric current of being derived by a fault current.
7. by one of claim 1 to 5 described locker (1), it is characterized in that, before described release coil (18) was arranged on a control device, this control device was that described release coil (18) produces a Control current that is suitable for discharging when the line voltage that has described circuit breaker descends.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200510050693 DE102005050693A1 (en) | 2005-10-18 | 2005-10-18 | Latching device for a circuit breaker |
| DE102005050693.3 | 2005-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101292321A true CN101292321A (en) | 2008-10-22 |
Family
ID=37441766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800388881A Pending CN101292321A (en) | 2005-10-18 | 2006-10-17 | Latching apparatus for a circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101292321A (en) |
| DE (1) | DE102005050693A1 (en) |
| WO (1) | WO2007045656A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295851A (en) * | 2012-03-02 | 2013-09-11 | 西门子公司 | Latch for circuit breaker |
| CN103295807A (en) * | 2012-03-02 | 2013-09-11 | 西门子公司 | Latching mechanism of power switch |
| CN105374614A (en) * | 2015-11-17 | 2016-03-02 | 平高集团有限公司 | Lock catch system and breaker operating mechanism |
| CN107769142A (en) * | 2017-11-30 | 2018-03-06 | 国家电网公司 | A kind of power transmission line wind biases the pulling force release device of rope |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2875537C (en) | 2012-06-18 | 2019-01-08 | Abb Technology Ag | Permanent magnet moc latch for the seismic qualification of a withdrawable switchgear |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031458A (en) * | 1934-10-30 | 1936-02-18 | Gen Electric | Operating mechanism |
| DE1221339B (en) * | 1963-07-12 | 1966-07-21 | Sachsenwerk Licht & Kraft Ag | Energy storage drive for electrical switchgear |
| DE1588675A1 (en) * | 1967-02-02 | 1970-08-13 | Siemens Ag | Circuit breaker |
| DD214482A1 (en) * | 1983-03-22 | 1984-10-10 | Inst Regelungstechnik Im Komb | CIRCUIT RELEASE DEVICE FOR CIRCUIT-BREAKER WITH ELECTRONIC RELEASE SWITCH |
| CH673175A5 (en) * | 1987-07-22 | 1990-02-15 | Bbc Brown Boveri & Cie | |
| DE4021945C2 (en) * | 1990-07-10 | 1999-12-30 | Alstom Sachsenwerk Gmbh | Switching device for interrupting fault currents |
| FR2741473B1 (en) * | 1995-11-21 | 1997-12-26 | Gec Alsthom T & D Sa | HANGER FOR A MECHANICAL CIRCUIT-BREAKER CONTROL DEVICE |
| EP1372176A1 (en) * | 2002-06-10 | 2003-12-17 | ABB Schweiz AG | Electromagnetic actuator for low voltage switch |
-
2005
- 2005-10-18 DE DE200510050693 patent/DE102005050693A1/en not_active Withdrawn
-
2006
- 2006-10-17 WO PCT/EP2006/067507 patent/WO2007045656A1/en active Application Filing
- 2006-10-17 CN CNA2006800388881A patent/CN101292321A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295851A (en) * | 2012-03-02 | 2013-09-11 | 西门子公司 | Latch for circuit breaker |
| CN103295807A (en) * | 2012-03-02 | 2013-09-11 | 西门子公司 | Latching mechanism of power switch |
| CN103295807B (en) * | 2012-03-02 | 2016-09-07 | 西门子公司 | The latching device of power switch |
| CN103295851B (en) * | 2012-03-02 | 2017-01-18 | 西门子公司 | Latch for circuit breaker |
| CN105374614A (en) * | 2015-11-17 | 2016-03-02 | 平高集团有限公司 | Lock catch system and breaker operating mechanism |
| CN105374614B (en) * | 2015-11-17 | 2018-06-26 | 平高集团有限公司 | A kind of fastener system and breaker operation mechanism |
| CN107769142A (en) * | 2017-11-30 | 2018-03-06 | 国家电网公司 | A kind of power transmission line wind biases the pulling force release device of rope |
| CN107769142B (en) * | 2017-11-30 | 2023-09-08 | 国家电网公司 | Tension releasing device for wind deflection prevention inhaul cable of power transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005050693A1 (en) | 2007-04-26 |
| WO2007045656A1 (en) | 2007-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101303946B (en) | Electrical switching apparatus, and conductor assembly and shunt assembly therefor | |
| US5504290A (en) | Remote controlled circuit breaker with recharging cam | |
| EP1975954B1 (en) | Energy dissipating spring seat | |
| US6437269B1 (en) | Spring powered electrical switching apparatus with anti-rollover cam | |
| EP1975969B1 (en) | Spring driven ram for closing an electrical switching apparatus | |
| EP1442466B1 (en) | Low-voltage circuit breaker | |
| EP2001030B1 (en) | Interlock assembly for a stored energy mechanism | |
| CN101373686A (en) | Circuit breaker having automatic release linkage | |
| CN101292321A (en) | Latching apparatus for a circuit breaker | |
| EP0918348A2 (en) | Circuit breaker with automatic catch to prevent rebound of blow open contact arm | |
| EP1442467B1 (en) | Low-voltage circuit breaker | |
| US8461947B2 (en) | Installation switching device | |
| JP4579045B2 (en) | Switchgear | |
| CA1231125A (en) | Latch release mechanism for molded case electric circuit breakers | |
| CN203631449U (en) | Operating mechanism of miniature circuit breaker | |
| EP1455374A1 (en) | A low-voltage circuit-breaker and corresponding positive-opening-operation device | |
| JPH0828179B2 (en) | Circuit breaker | |
| CN103646828A (en) | Operating mechanism of miniature circuit breaker and working process thereof | |
| CA2633874C (en) | Fault interrupter and operating method | |
| CN102332371B (en) | Small-sized circuit breaker | |
| KR100874838B1 (en) | Apparatus for manually operating a circuit breaker and load switch | |
| WO2007010608A1 (en) | Breaker | |
| RU109326U1 (en) | DRIVE MECHANISM FOR ELECTRIC SWITCHING DEVICES AND RELATED TO IT DEVICE | |
| WO2008049336A1 (en) | Circuit breaker for rapidly breaking low voltage circuit | |
| US4730177A (en) | Shock and vibration resistant magnetically operated actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081022 |