EP1665304A1 - Dispositif permettant d'actionner un appareil de commutation electrique - Google Patents

Dispositif permettant d'actionner un appareil de commutation electrique

Info

Publication number
EP1665304A1
EP1665304A1 EP03750542A EP03750542A EP1665304A1 EP 1665304 A1 EP1665304 A1 EP 1665304A1 EP 03750542 A EP03750542 A EP 03750542A EP 03750542 A EP03750542 A EP 03750542A EP 1665304 A1 EP1665304 A1 EP 1665304A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
drive shaft
rotary shaft
lever
switching
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
Application number
EP03750542A
Other languages
German (de)
English (en)
Other versions
EP1665304B1 (fr
Inventor
Franz-Josef Körber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology AG
Original Assignee
ABB Technology AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34400426&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1665304(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Technology AG filed Critical ABB Technology AG
Publication of EP1665304A1 publication Critical patent/EP1665304A1/fr
Application granted granted Critical
Publication of EP1665304B1 publication Critical patent/EP1665304B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord
    • 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

Definitions

  • the invention relates to a device for actuating an electrical switching device, in particular a high-voltage circuit breaker, according to the preamble of claim 1.
  • the invention further relates to a switching device, in particular a high-voltage circuit breaker, with an actuating device according to the invention.
  • circuit breakers have a switching chamber with a fixed and a movable contact piece.
  • the movable contact piece is attached to one end of an insulating rod, the other end of which is connected to one end of an actuating lever.
  • the other end of the actuating lever is fastened to a rotary shaft, so that the movable contact piece is moved towards or away from the fixed contact piece by rotation of the rotary shaft.
  • the length of the actuating lever is dimensioned such that the circuit breaker is switched on and off by rotating the rotary shaft by a certain angle.
  • the rotary shaft is often set in rotation by means of a mechanical or hydromechanical spring-loaded drive; the drive is coupled to one end of a connecting rod which is connected to the rotary shaft of the circuit breaker via a further lever.
  • a linear or approximately linear movement of the drive by a certain stroke causes the rotary shaft to rotate by the predetermined angle and thus a switching operation.
  • a mechanical or hydromechanical spring accumulator drive of this type has an energy store, which is in the form of a mechanical spring accumulator, for example of coil springs, coil springs, torsion springs or disc springs.
  • This spring accumulator is tensioned with the help of an elevator motor.
  • the spring accumulator is relaxed by releasing a latch or by actuating a control valve, as a result of which the spring energy is transmitted to the connecting rod via a transmission or via a hydraulic transmission medium and thus exerts the required stroke on the connecting rod.
  • Such spring-loaded drives have a comparatively complex structure made up of many individual moving parts and require a comparatively large amount of space.
  • mechanically moved and frictional parts generally require regular maintenance and checks.
  • the invention has for its object to provide a device for actuating a switching device, which has a simple structure with a smaller footprint and is low maintenance. It is also an object of the invention to provide a corresponding switching device.
  • an electric motor with a rotating drive shaft which can be coupled to the rotary shaft of the switching device via a gear, is provided for driving a rotary shaft of an electrical switching device, in particular a high-voltage circuit breaker.
  • an electric motor has a comparatively simple structure and requires less space. The effort for its maintenance compared to a spring-loaded drive is also reduced.
  • the use of a gearbox means that the torque that is transferred to the rotary shaft of the switching device is greater than the torque that the electric motor has to apply. This means that the design, and thus the space required, can be further reduced compared to an electric motor that drives the rotary shaft directly.
  • a motor is provided for driving all switch poles.
  • a separate electric motor for driving each switch pole can also be provided.
  • the central axis of the drive shaft of the electric motor runs parallel to the central axis of the rotary shaft, which is why the spatial arrangement of the electric motor is not determined by the position of the rotary shaft.
  • the electric motor is designed as a servo motor.
  • a servomotor has the advantage over other electric motors that a comparatively precise rotation through a predetermined angle can be carried out by appropriate control. Furthermore, a servo motor delivers a comparatively high torque, especially in short-time operation.
  • the transmission is designed as a lever transmission ⁇ .
  • a lever mechanism which is also referred to as a four-link swivel or a crank arm, is reliable and requires little maintenance.
  • the lever mechanism can advantageously be dimensioned such that a rotation of the drive shaft of the electric motor by 180 ° causes a switching operation.
  • a rotation of the drive shaft of the electric motor by 180 ° causes a switching operation.
  • the electric motor must apply a correspondingly higher torque. With a rotation of 180 °, the torque to be applied by the electric motor is minimal.
  • an intermediate piece which is preferably designed as a circular disk, is fastened to the drive shaft of the electric motor, the end of the connecting rod facing the drive shaft being connectable to the intermediate piece at least two distances from the central axis of the drive shaft.
  • the lever gear can be adjusted to different output angles by attaching the connecting rod at a suitable distance from the central axis of the drive shaft.
  • the transmission can be designed as a toothed belt drive, which is also comparatively reliable and requires little maintenance.
  • the toothed belt drive advantageously has a transmission ratio of 1: 1 to 1: 6, preferably 1: 3.5.
  • the drive shaft of the electric motor will rotate by 70 ° to 420 °, preferably 245 °.
  • a small angle of rotation of the drive shaft requires a high torque of the electric motor, and a large angle of rotation requires a high angular velocity.
  • a practically desirable average is a rotation angle of approximately 245 °, i.e. a gear ratio of 1: 3.5.
  • a switching device in particular a high-voltage circuit breaker, is claimed with an actuating device according to the invention.
  • the actuating device can also be applied to other high, medium and low voltage switching devices, for example circuit breakers, disconnectors, earth electrodes and load disconnectors.
  • FIG. 1 shows an actuating device according to the invention with a lever mechanism when the switching device is switched off
  • FIG. 2 shows an actuating device according to the invention with a lever mechanism when the switching device is switched on
  • FIG. 3 shows a circular disk with a plurality of fastening options
  • actuating device in Fig. 1, is shown with a lever gear when the switching device is switched off.
  • a first lever 16 is fastened transversely to the drive shaft 18, which is connected via a connecting rod 14 acts on a second lever 12 which is attached to a rotary shaft 10 of a switching device transversely to the rotary shaft 10.
  • an actuating lever 42 is also fastened transversely to the rotary shaft 10 on the gas space side and actuates a movable contact piece of a switching chamber 40 via an insulating rod 44.
  • the switching chamber 40 is only shown symbolically.
  • An imaginary connecting line V runs through the central axis of the drive shaft 18 and the central axis of the rotary shaft 10.
  • An imaginary center line M intersects the connecting line V and the central axis of the rotary shaft 10 at right angles.
  • the second lever 12 is inclined at an acute angle ⁇ relative to the center line M.
  • the end of the second lever 12 connected to the connecting rod 14 is located on the side of the center line M facing away from the drive shaft 18.
  • the first lever 16 is aligned with the connecting line V, with its end connected to the connecting rod 14 pointing in the direction of the rotary shaft 10 ,
  • the first lever 16 is rotated by the drive shaft 18 through an angle ⁇ , in this case 180 °. During this rotation, the first lever 16, the connecting rod 14 and the second lever 12 are always on the same side of the connecting line V.
  • FIG. 2 shows the actuating device from FIG. 1 with the switching device switched on, as can be seen from the symbol of the switching chamber 40.
  • the first lever 16 is again aligned with the connecting line V, but its end connected to the connecting rod 14 points away from the rotary shaft 10.
  • the second lever 12 is again inclined by the angle ⁇ relative to the center line M, but its end connected to the connecting rod 14 is located on the side of the center line M facing the drive shaft 18.
  • the first lever 16 is rotated by the drive shaft 18 through the angle ⁇ , in this case 180 °, in the opposite direction as when switching on. A rotation of the first lever 16 by 180 ° thus causes a rotation of the second lever by 2 * ⁇ .
  • L1 L2 * sin ( ⁇ )
  • L1 represents the length of the first lever 16 and L2 the length of the second lever 12.
  • the length of the connecting rod 14 is to be selected to be greater than the length of the second lever 12.
  • FIG. 3 an intermediate piece in the form of a circular disc 26 with several attachment options for a connecting rod 14 is shown.
  • the circular disk 26 is mounted on the drive shaft 18 of the electric motor, the central axes of the circular disk 26 and the drive shaft 18 being aligned with one another.
  • the circular disk 26 here has four bores 31, 32, 33 and 34, which are each provided at a different radial distance from the central axis of the circular disk 26 and serve as a fastening option for the connecting rod 14.
  • the connecting rod 14 also has a bore, for example, so that the circular disk 26 and the connecting rod 14 can be connected with the aid of a bolt.
  • the radial distance of the bore 31, 32, 33 or 34, with which the connecting rod 14 is connected, from the central axis of the drive shaft 18 corresponds to the length L1 of the first lever 16 in FIGS. 1 and 2.
  • the arrangement of the bores on the circular disk can be freely selected, as illustrated, for example, by the arrangement of a first bore 31 and a second bore 32.
  • a third bore 33 and a fourth bore 34 are arranged, for example, such that their centers are aligned with the center axis of the drive shaft 18.
  • the design of the intermediate piece is not limited to the shape described here as a circular disk, rather the intermediate piece can be, for example, as Circle segment, as an oval, as a rod, as a triangle, as a rectangle or in another form.
  • FIG. 4 shows an actuating device according to the invention with a toothed belt drive.
  • a first pulley 24 is mounted on the drive shaft 18 of the electric motor and a second pulley 22 on the rotary shaft 10 of the switching device.
  • a toothed belt 20 is tensioned around the pulleys 22 and 24.
  • An actuating lever 42 is also fastened to the rotary shaft 10 transversely to the rotary shaft 10 and actuates a movable contact piece of a switching chamber 40 via an insulating rod 44.
  • the switching chamber 40 is only shown symbolically.
  • the gear ratio of the toothed belt drive results as the quotient of the radius of the first pulley 24 and the radius of the second pulley 22. If the gear ratio is 1: 3, then a switching operation takes place in which the rotary shaft 10 is to be rotated, for example, by 70 ° a rotation of the drive shaft 18 by 210 °.
  • Isolating rod ⁇ angle of rotation of the rotating shaft ß: angle of rotation of the drive shaft

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Lock And Its Accessories (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Keying Circuit Devices (AREA)
EP03750542A 2003-09-13 2003-09-13 Dispositif permettant d'actionner un appareil de commutation electrique Revoked EP1665304B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2003/010199 WO2005034156A1 (fr) 2003-09-13 2003-09-13 Dispositif permettant d'actionner un appareil de commutation electrique

Publications (2)

Publication Number Publication Date
EP1665304A1 true EP1665304A1 (fr) 2006-06-07
EP1665304B1 EP1665304B1 (fr) 2007-06-27

Family

ID=34400426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750542A Revoked EP1665304B1 (fr) 2003-09-13 2003-09-13 Dispositif permettant d'actionner un appareil de commutation electrique

Country Status (8)

Country Link
US (1) US8035329B2 (fr)
EP (1) EP1665304B1 (fr)
JP (1) JP2007515744A (fr)
CN (1) CN100458995C (fr)
AT (1) ATE365970T1 (fr)
AU (1) AU2003270192A1 (fr)
DE (1) DE50307589D1 (fr)
WO (1) WO2005034156A1 (fr)

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DE102006001241A1 (de) * 2006-01-06 2007-07-12 Siemens Ag Schaltstelle eines elektrischen Schaltgerätes sowie Verfahren zum Bewegen eines Schaltstückes einer Schaltstelle
DE102010049137A1 (de) * 2010-10-22 2012-04-26 Abb Technology Ag Federspeicherantrieb sowie Hochspannungsleistungsschalter
RU2461108C1 (ru) * 2011-07-14 2012-09-10 Общество с ограниченной ответственностью "Техкам-Сервис" Электромеханический переключатель
DE102013005746A1 (de) 2013-04-05 2014-10-09 Abb Technology Ag Antriebsvorrichtung für einen Leistungsschalter einer Mittel- oder Hochspannungsschaltanlage
WO2015111133A1 (fr) 2014-01-21 2015-07-30 三菱電機株式会社 Appareillage de commutation et commutateur isolé des gaz
DE102015200135A1 (de) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre
DE102016214544B4 (de) * 2016-08-05 2020-01-09 Siemens Aktiengesellschaft Getriebe zwischen einem bewegbaren Schaltkontakt und einem Antrieb eines Leistungsschalters sowie ein Leistungsschalter mit einem solchen Getriebe
RU173314U1 (ru) * 2017-05-12 2017-08-22 Алексей Алексеевич Еремин Электромеханическое переключающее устройство для обеспечения бесперебойного электропитания потребителей

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Also Published As

Publication number Publication date
US8035329B2 (en) 2011-10-11
DE50307589D1 (de) 2007-08-09
CN1839455A (zh) 2006-09-27
ATE365970T1 (de) 2007-07-15
CN100458995C (zh) 2009-02-04
EP1665304B1 (fr) 2007-06-27
WO2005034156A1 (fr) 2005-04-14
US20060220470A1 (en) 2006-10-05
AU2003270192A1 (en) 2005-04-21
JP2007515744A (ja) 2007-06-14

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