WO1997050106A1 - Mecanisme d'entrainement d'appareillages commutateurs a vide de haute tension - Google Patents

Mecanisme d'entrainement d'appareillages commutateurs a vide de haute tension Download PDF

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Publication number
WO1997050106A1
WO1997050106A1 PCT/DE1997/001276 DE9701276W WO9750106A1 WO 1997050106 A1 WO1997050106 A1 WO 1997050106A1 DE 9701276 W DE9701276 W DE 9701276W WO 9750106 A1 WO9750106 A1 WO 9750106A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
drive
contact arrangement
contact
open
Prior art date
Application number
PCT/DE1997/001276
Other languages
German (de)
English (en)
Inventor
Werner Hartmann
Jan Stroh
Original Assignee
Siemens Aktiengesellschaft
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
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1997050106A1 publication Critical patent/WO1997050106A1/fr

Links

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
    • 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
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor

Definitions

  • the invention relates to a drive for high-voltage vacuum switching devices in which a holding chamber with a fixed and a movable power supply bolt and a contact arrangement attached to it spring and holding means for moving the contact arrangement from the closed state into the open state and for the keeping open at a predetermined stroke are assigned, wherein there is a parallel connection of two springs, at least one of which is the drive spring for the switch-off process.
  • a switching mechanism is required to latch switching devices open.
  • Such a switching mechanism in which several springs are present, is described for example in DE 15 40 055 A and DE 15 40 127 A,.
  • Spring characteristic can be realized with two slopes and a kink or a curvature, the soft spring and then the hard spring taking effect when switched on. This requires the drive to latch.
  • a hydraulic drive with spring accumulator for actuating switches which has two coaxially arranged parallel springs of the contact arrangement and an associated latching mechanism.
  • a vacuum holder with a drive is known from DE-OS 15 40 063, in which a switch-off spring and a contact pressure spring are arranged concentrically to one another.
  • the two springs preferably act counter to one another.
  • the contact pressure spring is effective for generating the required closing force, as a result of which parts of the drive mechanism experience a pre-acceleration during the first 3 to 5 mm stroke before the switch contacts open.
  • the opening speeds range from 1 to 2.5 m / s.
  • the drive in the end position must provide the holding force by the correspondingly long drive spring.
  • a drive described above could be latched in the end position, in which case the latching requires additional mechanics and the drive would have to be unlatched with an additional device before the closing process.
  • the object of the invention is therefore to provide a drive specifically for use in high-voltage vacuum switches, which does not include oversizing and, in particular, does not require any additional mechanical means.
  • the drive spring itself consists of two parallel springs, the first spring being a short drive spring with a high spring constant and the second drive spring being a long spring with a low spring constant.
  • the acceleration which is especially necessary for high-voltage vacuum switches, until the desired speed is reached is provided by the short drive spring with a high spring constant.
  • the moving contact is then released and is not accelerated further with this spring, so that only the frictional force and the air pressure closing force of the switch are effective as braking force.
  • the second spring In parallel to the drive spring, which delivers the high initial acceleration, the second spring, on the other hand, is installed as a soft spring with a large stroke, which in its end position provides the hold-open force.
  • the mechanical latching in the open state that was previously necessary is unnecessary.
  • the second spring supports the main spring, which is adapted accordingly.
  • FIG. 1 shows a high-voltage vacuum switch with the part closed or open
  • FIG. 2 shows a spring drive for the high-voltage vacuum switch according to FIG. 1 with the switch closed according to FIG. 1
  • FIG 3 shows the spring drive according to FIG 2 with the switch open according to
  • FIG. 1 A first figure.
  • a vacuum switch essentially consists of a switching tube 1 with the actual switching chamber 2, in which one
  • Contact arrangement 10 comprising a fixed contact 13 and a moving contact 14 are arranged.
  • the fixed contact 13 is carried by a fixed power supply pin 3 and the moving contact 14 by a movable power supply pin 4.
  • Insulators 6 and 7 are connected to the switching chamber 2 in the axial direction of the switch, and are connected in a vacuum-tight manner by means of metal flanges (not specified).
  • the movable contact pin 4 is installed axially movable in the switching tube at the end via a bellows 9.
  • a mechanical drive is usually provided for the movement of the movable contact bolt 4 with the movable contact 14.
  • such a drive 20 consists of a first mechanical spring 21 and a second mechanical spring 22, which are fastened on a sleeve 25 with corresponding flanges 26, 27 and 28.
  • the first spring 21 is a short drive spring with a high spring constant, the length of which can be dimensioned such that it is shorter than the end stroke of the contact arrangement.
  • the second spring 22 is a long hold-open spring with a low spring constant. Both springs 21 and 22 are mechanically connected in parallel and form a common spring system which replaces the opening spring which is usually present in the drive in vacuum switching devices.
  • FIG. 2 shows the switch position of the vacuum switch in the closed state with the drive spring 21 tensioned.
  • the length of the drive spring 21 is compressed by a quarter, resulting in a corresponding pretension.
  • the hold-open spring 22 is also tensioned in this switch position.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

Dans des appareillages commutateurs à vide de haute tension pourvus d'une chambre de commutation avec un boulon fixe et un boulon mobile d'alimentation en courant et d'un dispositif de contact monté sur ceux-ci, des éléments à ressort et des éléments de retenue déplacent le dispositif de contact de l'état fermé à l'état ouvert et le maintiennent ouvert après une course prédéterminée. Un montage en parallèle de deux ressorts (21, 22) assure d'une part l'accélération requise du contact mobile et d'autre part fournit une force de retenue à l'état ouvert du dispositif de contact (10) sans qu'il soit nécessaire de prévoir des moyens à crans d'arrêt.
PCT/DE1997/001276 1996-06-26 1997-06-19 Mecanisme d'entrainement d'appareillages commutateurs a vide de haute tension WO1997050106A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996125672 DE19625672C1 (de) 1996-06-26 1996-06-26 Antrieb für Hochspannungsvakuumschaltgeräte
DE19625672.0 1996-06-26

Publications (1)

Publication Number Publication Date
WO1997050106A1 true WO1997050106A1 (fr) 1997-12-31

Family

ID=7798128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001276 WO1997050106A1 (fr) 1996-06-26 1997-06-19 Mecanisme d'entrainement d'appareillages commutateurs a vide de haute tension

Country Status (2)

Country Link
DE (1) DE19625672C1 (fr)
WO (1) WO1997050106A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818794B1 (fr) * 2000-12-22 2003-06-13 Socomec Sa Ampoule d'interrupteur sous vide
JP5297682B2 (ja) * 2008-04-24 2013-09-25 株式会社明電舎 真空遮断器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1806951A1 (de) * 1968-10-31 1970-07-02 Siemens Ag Hydraulisches Antriebssystem
US3728508A (en) * 1971-10-26 1973-04-17 Ite Imperial Corp Operating mechanism for vacuum circuit breaker including contact pressure springs
DE2702962A1 (de) * 1977-01-25 1978-07-27 Driescher Eltech Werk Vakuumschaltgeraet
DE2828671A1 (de) * 1978-06-30 1980-01-10 Calor Emag Elektrizitaets Ag Loeschkammer
DE4006453A1 (de) * 1990-03-01 1991-09-05 Driescher Eltech Werk Elektrisches schaltgeraet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1355898A (fr) * 1963-03-22 1964-03-20 Westinghouse Electric Corp Mécanismes de déclenchement de disjoncteurs
DE1540055A1 (de) * 1965-04-24 1969-12-18 Licentia Gmbh Schaltmechanismus fuer verklinkte Schaltgeraete
DE1540063A1 (de) * 1965-05-18 1970-01-02 Licentia Gmbh Vakuumschalter
DE1540127A1 (de) * 1965-12-15 1970-04-16 Licentia Gmbh Schaltmechanismus fuer verklinkte Schaltgeraete
US4225763A (en) * 1978-03-23 1980-09-30 General Electric Company Means for suppressing contact-separation at the end of a vacuum circuit-breaker closing operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1806951A1 (de) * 1968-10-31 1970-07-02 Siemens Ag Hydraulisches Antriebssystem
US3728508A (en) * 1971-10-26 1973-04-17 Ite Imperial Corp Operating mechanism for vacuum circuit breaker including contact pressure springs
DE2702962A1 (de) * 1977-01-25 1978-07-27 Driescher Eltech Werk Vakuumschaltgeraet
DE2828671A1 (de) * 1978-06-30 1980-01-10 Calor Emag Elektrizitaets Ag Loeschkammer
DE4006453A1 (de) * 1990-03-01 1991-09-05 Driescher Eltech Werk Elektrisches schaltgeraet

Also Published As

Publication number Publication date
DE19625672C1 (de) 1997-12-18

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