EP1999768A1 - Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes - Google Patents

Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes

Info

Publication number
EP1999768A1
EP1999768A1 EP07726925A EP07726925A EP1999768A1 EP 1999768 A1 EP1999768 A1 EP 1999768A1 EP 07726925 A EP07726925 A EP 07726925A EP 07726925 A EP07726925 A EP 07726925A EP 1999768 A1 EP1999768 A1 EP 1999768A1
Authority
EP
European Patent Office
Prior art keywords
helical compression
compression spring
insulating
drive
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.)
Granted
Application number
EP07726925A
Other languages
German (de)
English (en)
Other versions
EP1999768B1 (fr
Inventor
Ralf-Reiner Volkmar
Thomas Erk
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
Original Assignee
Siemens 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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1999768A1 publication Critical patent/EP1999768A1/fr
Application granted granted Critical
Publication of EP1999768B1 publication Critical patent/EP1999768B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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

Definitions

  • the invention relates to an insulating switching rod for a ⁇ line of a drive movement in a moving contact of an electrical contact system of a switching device and He ⁇ generating a contact force in the closed state of the contact system with a arranged in a cavity tensioning device for a driving member of the shift rod to the on ⁇ rather conservation the contact force.
  • Such an insulating switching rod is known from the landläu ⁇ figen prior art.
  • switching devices such as circuit breakers
  • the isolie ⁇ - saving switching rod serves on the one hand for galvanic separation of the drive unit from the contact system and on the other hand Initiation of the drive movement and to generate a substantially constant contact force in the closed state of the contact system.
  • the insulating shift rod comprises a tensioning device which is arranged in a cavity of the shift rod and between a Antriebsele ⁇ ment and a housing of the shift rod acts, so that in the closed state by the tensioning device, the contact force is maintained on the contact system.
  • the tensioner comprises an array of Belleville springs through which the contact force is generated.
  • Such disk springs are susceptible to wear due to edge abrasion and due to their steeply running characteristic never with small changes in the working stroke of the Weggerä ⁇ tes to large changes in the initiated contact force.
  • Object of the present invention is to provide an insulating shift rod of the type mentioned in such a way that constant contact forces and low wear throughout the life are guaranteed.
  • this object is achieved in the case of an insulating switching rod of the type mentioned at the outset in that the tensioning device comprises a helical compression spring arrangement.
  • the wear on the rod is substantially redu sheet ⁇ in Advantageous ter manner.
  • the helical compression spring assembly has no edges, so that frictional effects on the wall of the cavity are reduced and the wear of the spring is reduced.
  • helical compression springs compared to previously conventional disc springs on a flatter characteristic curve with a comparatively constant contact force in the wake,
  • the helical compression spring arrangement comprises a plurality of counter-wound helical compression springs, which are interleaved.
  • the helical compression spring arrangement is designed as a helical compression spring assembly, wherein the plurality any opposite ⁇ fig wound and nested helical compression springs have a total of a large spring force.
  • the helical compression spring arrangement has an average spring rate of 200 N / mm.
  • a buckling safety of the helical compression spring arrangement is advantageously increased substantially because the counter-wound helical compression springs stabilize each other against buckling, whereby the wear of the device is reduced.
  • the zigenendruckfederanord ⁇ tion is guided, for example, by an inner with the drive ⁇ element firmly connected drive pin.
  • a first helical compression spring of the helical compression spring arrangement has an outer diameter which corresponds to an inner diameter of the cavity.
  • the drive element has a drive bolt, wherein a second helical compression spring having an outer diameter which is smaller than the inner diameter of the first helical compression spring, an inner diameter corresponding to an outer diameter of the drive pin.
  • a guide of the helical compression spring assembly is ensured on the drive bolt, whereby further the buckling safety of the helical compression spring assembly is increased and the wear is reduced.
  • a mutual stabilization of the first and the second helical compression spring relative to each other is ensured, whereby the buckling resistance is also increased.
  • FIG. 1 shows a switch pole of a switching device with an insulating switching rod according to the invention
  • Figure 2 is a detail view of the insulating shift rod according to the invention.
  • FIG. 1 shows a switch pole 1 of a circuit breaker known as such for switching or interrupting currents of a polyphase alternating current network.
  • the switch pole 1 summarizes environmentally an insulating housing 2, in which a first on ⁇ circuit piece 3 and a second connection piece 4 for switching circuit at figuratively not shown busbars or
  • Outgoing conductors of the switching device are arranged.
  • Between the first connector 3 and the second connector 4 is an electrically conductive connection via a contact system of a vacuum interrupter 5 manufacture or separable.
  • a figür- not shown moving contact of the vacuum interrupter 5 is electrically conductively connected by means of a conductive connecting rod 6 via a coupling element 7 and further connecting means 8 with the second connector 4.
  • the coupling element 7 has for this purpose a flexible conductor 9.
  • the connecting rod 6 is part explains the insulating switch rod 10 which th with reference to Figure 2 further un ⁇ closer.
  • the insulating shift rod 10 is mechanically coupled to a drive unit, not shown figuratively, via which a drive movement in the moving contact of the vacuum interrupter 5 is initiated.
  • FIG. 2 shows the insulating switching rod 10 from FIG. 1 in a detailed view.
  • the insulating shift rod 10 comprises an insulating body 11 in which the connecting rod 6 is poured.
  • a likewise cast into the insulating body 11 housing part 12 has a cylindrical cavity 13, which is closed by a cover plate 14.
  • a drive element of an on ⁇ drive bolt 16 having at its first end 17, a connecting part 18 which is for connection to the at ⁇ drive unit of the switching device configured stretches 16 in shape.
  • the on ⁇ drive pin 16 also has a flange portion 19 having which has an inner diameter which is slightly smaller so that out than the inner diameter of the cavity 13, the drive pin 16 by means of the flange 19 on the wall of the cavity.
  • the flange Ab ⁇ section 19 also serves as a stop element to limit movement of the drive pin 16 on the cover plate 14.
  • the length of the drive pin 16 is chosen so that it substantially corresponds to the length of the cavity 13 and is slightly shorter than this.
  • the housing part 12 has a recess 21 in a bottom area 20 of the cavity 13.
  • a helical compression spring arrangement 22 Arranged in the cavity 13 is a helical compression spring arrangement 22 with a first helical compression spring 23 and a second helical compression spring 24.
  • the helical compression spring arrangement 22 is prestressed between the bottom region 20 of the cavity 13 and the flange-like section 19 of the drive pin 16.
  • the first helical spring 23 in this case has an outer diameter which corresponds to the inner diameter of the cavity 13, so that the first helical compression spring is guided on the inner wall of the cavity 13.
  • the second helical compression spring 24 has a smaller outer diameter than the inner diameter of the first helical compression spring and an inner diameter which substantially corresponds to the outer diameter of the drive pin 16, so that the second helical compression spring is guided on the drive pin 16.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Position Input By Displaying (AREA)
  • Switches With Compound Operations (AREA)

Abstract

Pour réaliser une tringle isolante de contact destinée à conférer un déplacement d'entraînement dans un contact mobile d'un système de contact électrique d'un appareil de commutation et à créer une force de contact lorsque le système de contact est en position fermée, avec un dispositif de serrage disposé dans un espace creux et prévu pour un élément d'entraînement de la tringle de commutation en vue de maintenir la force de contact, qui pour présenter une structure compacte exerce une plus grande force de contact et garantit des propriétés élastiques constantes ainsi qu'une faible usure sur toute sa durée de vie, l'invention propose que le dispositif de serrage présente un système à ressorts hélicoïdaux de poussée.
EP07726925.6A 2006-03-29 2007-03-15 Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes Active EP1999768B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006015308A DE102006015308A1 (de) 2006-03-29 2006-03-29 Isolierende Schaltstange
PCT/EP2007/052435 WO2007113089A1 (fr) 2006-03-29 2007-03-15 Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes

Publications (2)

Publication Number Publication Date
EP1999768A1 true EP1999768A1 (fr) 2008-12-10
EP1999768B1 EP1999768B1 (fr) 2013-10-30

Family

ID=38089126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726925.6A Active EP1999768B1 (fr) 2006-03-29 2007-03-15 Tringle isolante de commutation dotee d'un systeme de poussoir de contact constitue de plusieurs ressorts helicoidaux de poussee enroules dans des sens opposes

Country Status (7)

Country Link
US (1) US20100078302A1 (fr)
EP (1) EP1999768B1 (fr)
CN (1) CN101395684B (fr)
DE (1) DE102006015308A1 (fr)
ES (1) ES2435514T3 (fr)
RU (1) RU2008142737A (fr)
WO (1) WO2007113089A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009034092A1 (fr) * 2007-09-11 2009-03-19 Siemens Aktiengesellschaft Tige de commutation isolante
CN101887808A (zh) * 2009-05-11 2010-11-17 上海市电力公司 基于调整绝缘拉杆的提高处理合闸弹跳效率的方法
EP2460637B1 (fr) * 2010-12-03 2013-11-13 ABB Technology AG Tige de poussée d'un interrupteur sous vide et son procédé de fabrication
FR2971080B1 (fr) * 2011-02-02 2013-03-01 Alstom Grid Sas Appareillage d'ampoule a vide comprenant un moyen de verrouillage
CN102737906A (zh) * 2012-07-05 2012-10-17 厦门明翰电气股份有限公司 一种断路器新型绝缘拉杆
US10978256B1 (en) 2013-03-15 2021-04-13 Innovative Switchgear IP, LLC Electrical switching device
JP5971671B2 (ja) * 2013-12-26 2016-08-17 三菱電機株式会社 開閉装置
DE102014210587A1 (de) * 2014-06-04 2015-12-17 Siemens Aktiengesellschaft Verfahren zur Herstellung eines feststoffisolierten Schalterpols und feststoffisolierter Schalterpol
DE102017212066A1 (de) * 2017-07-14 2019-01-17 Siemens Aktiengesellschaft Kontaktanpressanordnung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025375A (en) * 1960-04-04 1962-03-13 Gen Electric Electric circuit breaker having a sealed interrupting unit
DE1939642B2 (de) * 1969-08-04 1975-01-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Auf linearem Druck basierender Schalter für prellfreies Schalten
DE2118275A1 (de) * 1971-04-15 1972-10-26 SABA, Schwarzwalder Apparate Bau Anstalt August Schwer Sohne GmbH, 7730 Vilhngen P Druckschalter mit einem Schalt kontakte tragenden Schieber
NL157739B (nl) * 1975-07-21 1978-08-15 Hazemeijer Bv Los inschakelapparaat voor een elektrische schakelaar.
US4343030A (en) * 1978-09-06 1982-08-03 Mcgraw-Edison Company Load break switch
DE8108234U1 (de) * 1981-03-20 1982-02-04 Franz Kirsten Elektrotechnische Spezialfabrik, 6530 Bingen Elektrischer Kontaktschalter
DE3609127A1 (de) * 1986-03-19 1987-10-01 Schulte Elektrotech Tastschalter
DE4133091C2 (de) * 1991-09-30 1995-06-01 Siemens Ag Vakuumschalter mit einer Antriebsvorrichtung und einer Polantriebseinheit
KR940000049Y1 (ko) 1991-12-13 1994-01-05 금성계전 주식회사 진공차단기의 아크방지용 개폐장치
JP3589061B2 (ja) * 1999-01-25 2004-11-17 株式会社日立製作所 真空開閉装置及び真空開閉装置の開閉方法
FR2808117B1 (fr) * 2000-03-31 2003-01-24 Schneider Electric Ind Sa Appareillage electrique de coupure comportant une ampoule a vide et une liaison electrique flexible

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007113089A1 *

Also Published As

Publication number Publication date
DE102006015308A1 (de) 2007-10-11
US20100078302A1 (en) 2010-04-01
RU2008142737A (ru) 2010-05-10
CN101395684A (zh) 2009-03-25
EP1999768B1 (fr) 2013-10-30
ES2435514T3 (es) 2013-12-20
CN101395684B (zh) 2010-12-08
WO2007113089A1 (fr) 2007-10-11

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