EP1553611A1 - Appareillage de commutation à vide - Google Patents

Appareillage de commutation à vide Download PDF

Info

Publication number
EP1553611A1
EP1553611A1 EP04078204A EP04078204A EP1553611A1 EP 1553611 A1 EP1553611 A1 EP 1553611A1 EP 04078204 A EP04078204 A EP 04078204A EP 04078204 A EP04078204 A EP 04078204A EP 1553611 A1 EP1553611 A1 EP 1553611A1
Authority
EP
European Patent Office
Prior art keywords
drive
spring
rod
torque
hold
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.)
Withdrawn
Application number
EP04078204A
Other languages
German (de)
English (en)
Inventor
Jürgen EINSCHENK
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Publication of EP1553611A1 publication Critical patent/EP1553611A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H01H3/32—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 present invention relates to a vacuum switchgear.
  • An electrical switchgear according to the principle of the vacuum switchgear is already known in principle.
  • This includes a vacuum space, i. one of gas or air as far as possible evacuated space to the extent of a drive optional Contacting and separation of two electrical contacts.
  • one these contacts are fixed in the vacuum tube, the second contact is on a linearly displaceable drive rod attached.
  • the drive rod has at the end facing away from the contacts an open-holding spring on which the contacts in the disconnected position holds.
  • This hold-open spring is to be dimensioned in this way that they against a vacuum surrounding the vacuum tube the Keep contacts in a separate position.
  • the contacts can thereby be connected, that one connected to the drive rod Drive is actuated, which counter to the force the open-holding spring and supported by the gas pressure, the merger causes the contacts.
  • the present invention is therefore based on the object to create a vacuum switchgear, which on the one hand a safe separation of the contacts against a vacuum space surrounding Gas pressure or pressure ensures and on the other Site is physically small and inexpensive.
  • the force acting on the drive rod Gas pressure which seeks to bring the contacts together, beyond the drive stroke of the drive rod is substantially linear, since the corresponding vacuum space Gas space or airspace assumed large enough will assume that no nonlinearities in the gas pressure increase are.
  • the surrounding gas pressure may be e.g. ambient air be or more highly compressed insulating gas.
  • the previously customary drive rod divided into a still existing drive rod, which is connected to the one electrical contact, and also in a spring rod, which with the open-holding spring connected is.
  • the drive rod of the vacuum switchgear according to the invention is via a first pivot point with the drive rod and a second articulation point with the spring rod connected to load the hold-open spring.
  • the hold-open spring over a second lever to be attached to the switch shaft.
  • the Restoring force on the tube depends on the spring characteristic and the current lever position.
  • a further advantageous embodiment provides that the Torque curve of the of the hold-open spring on the drive Applied torque over the drive stroke of the drive rod away from an intermediate position to both the maximum Hub (switch position "off”, see Fig. 2c) as well to the minimum stroke (switch position "on”, see Fig. 2c) out is sloping. It now results in a substantially uniform Course, which is slightly “mountain-shaped", so a maximum having in the range of the average drive stroke.
  • the torque curve of the torque acting on the drive by the surrounding gas pressure is substantially constant. This is always the case when the gas volume surrounding the vacuum space is so large that due to the movement of the drive rod no compression effects occur in this gas space.
  • the gas space surrounding the vacuum space may contain, for example, atmospheric air or be surrounded by a special insulating gas, such as sulfur hexafluoride (SF 6 ).
  • the pressure in this case can be about 1 bar absolute in atmospheric air, in the environment with an insulating glass to about 10 bar, this is then also a correspondingly stronger to be dimensioned spring provided.
  • the pressure in the vacuum space is essentially to be considered as ultra-high vacuum, so that corrosion of the contacts is minimized by the influence of gas.
  • the pressure in the vacuum space is preferably less than 1x10 -6 bar absolute pressure.
  • the drive rod can in this case be sealed via a bellows to the interior of the vacuum space, by such a bellows, which is preferably made of a metal foil or a metal sheet, a secure pressure-tight separation between the vacuum space and the surrounding gas space is achieved.
  • the vacuum switchgear must be designed. This applies both to the drive stroke of the drive rod, which may preferably be between 5 and 100 mm, the potential difference of the contacts in the disconnected state is preferably between 1 kV and 125 kV.
  • the switch or the switching system should therefore preferably be designed for the voltage level of 1 kV to 125 kV (at an AC voltage 50/60 Hz). That is, the potential difference at the open contacts can be much higher, depending on which voltage form is applied (AC voltage with 50/60 Hz, lightning surge voltage, etc.).
  • a linear Provide train compression spring As they are inexpensive and reliable, a linear Provide train compression spring, as they are available inexpensively is and with the present invention relatively easy a homogenization of the moment of the hold-open spring the rotary actuator is accessible. This is because of that a linear tensile compression spring the force linearly increases and thus the interpretation relatively easy to accomplish is.
  • spring variants such as Torsion springs or springs, which take advantage of compressible media, provide.
  • the Spring rod is pivotable, wherein preferably the pivoting movement so that when the rotary actuator the spring rod to the center of rotation of the pivot drive out a Pivoting movement and thus a lever shortening between turning center and generated in the spring rod normal force.
  • turning center here is the “momentary pole” of the rotary motion meant the pivot drive. This can e.g. be stationary in certain kinematics, however, this can also be displaced be accepted.
  • Pivoting movement is such that when the spring force increases in the open-holding spring and thus an increase in the Force on the spring rod so a pivoting movement takes place that an effective shortening of the lever between just this Open holding spring force and the center of rotation takes place, so that in the sum of a substantially constant moment on the Drive acts, which then dimensioned accordingly small can be.
  • Fig. 1 shows a vacuum switchgear according to the prior art.
  • a vacuum space 2 ' in which on the one hand a fixed electrical contact 3 'and also a on a drive rod 5 'fixed electrical contact 4 'is provided.
  • the drive rod 5 ' is directly with a Open holding spring 6 'connected to the electrical contacts 3 'and 4' keeps in their separate position.
  • the hold-open spring and supported by the gas pressure which acts on the drive rod 5 'from the environment in accordance with a drive 7 ', the contact 4' upwards to move into the switch position "on".
  • the Closing must be made.
  • Fig. 2a shows a vacuum switchgear according to the invention in the switch position "off".
  • This is a vacuum switchgear with a vacuum interrupter with a vacuum space 2, in which there is an ultra-high vacuum with less than 1 ⁇ 10 -6 bar absolute pressure.
  • the vacuum space 2 is surrounded by the Isoliergasschwefelhexafluorid (SF 6 ).
  • the pressure of the insulating gas in the switchgear, outside the vacuum tube is about 1 to 10 bar absolute.
  • Vacuum space is filled with atmospheric air.
  • the vacuum interrupter is designed so the potential difference of the contacts 3 and 4 in the separated state, preferably 1 to 125 kV is.
  • a fixed contact 3 In the vacuum space 2 is a fixed contact 3 and a This contact 4 is provided in connection. Of the Contact 4 is connected to a drive rod 5.
  • the drive rod 5 is linearly displaceable.
  • the drive rod 5 has on its side facing away from the electrical contact 4 side a hinged first pivot point 8, which on a pivoting boom of a pivotable about a center of rotation 11 Swivel drive 7 is attached.
  • Spaced therefrom is a spring rod 10 via a second pivot point 9 at hinged to the drive arm, the spring bar 10th is at its end remote from the second pivot point 9 with connected as a train-compression spring open holding spring 6 connected.
  • a vacuum switchgear according to the invention 1 with a vacuum space 2 to the extent of a drive optional contacting and separation of two electrical Contacts 3, 4, wherein at least one of the contacts (and the contact 4) with a linearly displaceable drive rod 5 for supported by a hold-open spring 6 separation the contacts 3, 4 against a vacuum surrounding the gas pressure connected is.
  • the drive is here as a rotary actuator 7 executed, which via a first articulation point 8 with the drive rod and a second articulation point 9 with connected to the spring rod 10 for loading the hold-open spring 6 is, with these articulation points to equalize the from the open-holding spring 6 against the drive torque acting are spaced.
  • Fig. 2b shows the closed state of the contacts 3 and 4. Between the state shown in Fig. 2a "switch position off “and the" switch position on “shown in Fig. 2b a complete “drive stroke” provided, this corresponds to 80 mm linear movement of the drive rod 5 (see also Fig. 2c). This is ensured by an unillustrated metallic bellows for that between the vacuum space 2 and the surrounding Gas space is a gas seal.
  • the upper line is the moment in the hold-open spring 6 'in the drive rod 5', which exerted by the hold-open spring 6 'would, for the state the technique of Fig. 1, shown.
  • the drive 7 'to counter It can therefore be seen in the diagram in FIG "Switch off position" at 0 ° angle of the switch shaft Starting with a torque of about 370 Nm a strong rising torque must be applied, which at 45 ° angle of the switch shaft (this corresponds to 80 mm drive stroke) just under 800 Nm. This corresponds to an open-holding spring 6 'rising from 4000 N over 8000 N force.
  • the torque curve of the hold-open spring 6 on the drive applied torque over the drive stroke of the drive rod 5 therefore has a substantially "mountain-shaped" Course, ie a course with an intermediate maximum about 40 mm drive stroke or 20 - 25 ° rotation of the shaft of the Swivel drive 7 opposite the "switch position off". From In this intermediate position, the moment falls both to the maximum as well as to the minimum stroke (i.e. or to the "switch position off") down.
  • the torque curve is more or less flat adjustable. It is favorable that the maximum Torque differences of the of the open-holding spring the drive torque applied via the drive stroke a maximum of 15%, preferably a maximum of 10% of the maximum of caused by the hold-open spring torque (ie, for example of the torque reached approximately at 40 mm drive stroke is.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP04078204A 2004-01-06 2004-11-23 Appareillage de commutation à vide Withdrawn EP1553611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001796 2004-01-06
DE200410001796 DE102004001796A1 (de) 2004-01-06 2004-01-06 Vakuumschaltanlage

Publications (1)

Publication Number Publication Date
EP1553611A1 true EP1553611A1 (fr) 2005-07-13

Family

ID=34585404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04078204A Withdrawn EP1553611A1 (fr) 2004-01-06 2004-11-23 Appareillage de commutation à vide

Country Status (2)

Country Link
EP (1) EP1553611A1 (fr)
DE (1) DE102004001796A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016110389A1 (fr) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Tube de commutation à vide
CN117516774A (zh) * 2023-11-10 2024-02-06 广东电网有限责任公司广州供电局 真空灭弧室触头反力检测方法、装置、计算机设备和介质

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010049137A1 (de) * 2010-10-22 2012-04-26 Abb Technology Ag Federspeicherantrieb sowie Hochspannungsleistungsschalter
DE102012007680B4 (de) * 2012-03-09 2021-10-07 Abb Power Grids Switzerland Ag Hydromechanisches Speichermodul für einen Federspeicherantrieb eines Hochspannungsschalters
EP4708342A1 (fr) * 2024-09-06 2026-03-11 ABB Schweiz AG Unité de commutation pour applications électriques

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146766A (en) * 1975-05-23 1979-03-27 Associated Electrical Industries Limited Actuating mechanisms for vacuum interrupters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146766A (en) * 1975-05-23 1979-03-27 Associated Electrical Industries Limited Actuating mechanisms for vacuum interrupters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016110389A1 (fr) * 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Tube de commutation à vide
CN117516774A (zh) * 2023-11-10 2024-02-06 广东电网有限责任公司广州供电局 真空灭弧室触头反力检测方法、装置、计算机设备和介质

Also Published As

Publication number Publication date
DE102004001796A1 (de) 2005-08-11

Similar Documents

Publication Publication Date Title
EP2729991B1 (fr) Borne de connexion
EP3433867B1 (fr) Élément de couplage pour un appareil de commutation électrique
DE102015200135A1 (de) Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre
DE102007017366B3 (de) Elektrischer Schalter
DE3131417A1 (de) Betaetigungsvorrichtung fuer einen erdungsschalter oder einen kurzschliesser in drucklos gekapselten schaltanlagenteilen von hochspannungs- oder mittelspannungsschalt- und -verteileranlagen
WO2007113089A1 (fr) Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes
DE102014102875B4 (de) Betätigungsvorrichtung zum Betätigen einer Vakuumschaltröhre, Schaltvorrichtung mit einer solchen Betätigungsvorrichtung sowie Laststufenschalter mit einer solchen Schaltvorrichtung
EP1553611A1 (fr) Appareillage de commutation à vide
DE102015107454A1 (de) Schuberdungsschalter und Erderkontakteinrichtung für einen Schuberdungsschalter
EP4043269B1 (fr) Collecteur de courant pour un véhicule
DE10312176B3 (de) Lastumschalter für einen Stufenschalter
DE102021124271A1 (de) Leistungsschalter
DE3726739C2 (fr)
DE10048659A1 (de) Schaltkontaktanordnung eines Niederspannungs-Leistungsschalter mit Kontaktkraftfedern
DE2935915A1 (de) Elektrischer vakuumschalter
DE69516790T2 (de) Mittelspannungsschalter oder Schutzschalter
DE112005003632B4 (de) Leistungsschalter
EP3381734B1 (fr) Dispositif de séparation pour pantograph du vehicule ferrrovaire
EP4318517B1 (fr) Interrupteur de puissance comprenant au moins une chambre à vide
DE102006041250A1 (de) Antriebseinheit
DE102006051424B4 (de) Schlossmechanismus für elektrisches Gerät
DE3224938C2 (fr)
EP3753035B1 (fr) Cinématique de commutation pour tubes interrupteurs à vide et procédé d'adaptation d'un couple de maintien d'ouverture transmis sur un arbre de commutateur
DE102010024386B4 (de) Übertragungselement zur Übertragung von Antriebsbewegungen auf einen Bewegkontaktanschlussbolzen eines Schaltgeräts
DE102008024419B3 (de) Schaltkammer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK YU

17P Request for examination filed

Effective date: 20051205

AKX Designation fees paid

Designated state(s): CH DE FR LI SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070601