EP3138113A1 - Prévention de défauts d'alignement d'une barre d'entraînement d'un disjoncteur - Google Patents

Prévention de défauts d'alignement d'une barre d'entraînement d'un disjoncteur

Info

Publication number
EP3138113A1
EP3138113A1 EP15728813.5A EP15728813A EP3138113A1 EP 3138113 A1 EP3138113 A1 EP 3138113A1 EP 15728813 A EP15728813 A EP 15728813A EP 3138113 A1 EP3138113 A1 EP 3138113A1
Authority
EP
European Patent Office
Prior art keywords
drive rod
drive
pole shell
guiding
vacuum interrupter
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
EP15728813.5A
Other languages
German (de)
English (en)
Other versions
EP3138113B1 (fr
Inventor
Unni Suresh
Fabian RÖHRIG
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 EP3138113A1 publication Critical patent/EP3138113A1/fr
Application granted granted Critical
Publication of EP3138113B1 publication Critical patent/EP3138113B1/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
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • 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 a circuit breaker having a vacuum interrupter accommodated in a pole shell, comprising a fixed contact and a moving contact and having an electrically insulating drive rod for initiating a drive movement of a switch drive into the moving contact for opening or closing the contact system of the vacuum interrupter. Moreover, the invention relates to a method for avoiding misalignment of a drive rod of a circuit breaker.
  • a moving contact along a central axis of the vacuum interrupter is moved relative to a fixed contact.
  • a switch drive provides a corresponding drive movement.
  • To initiate the drive movement in the Bewegkon- contact pin of the vacuum interrupter is an electrically insulating trained drive rod which connects the switch drive with the vacuum interrupter. Both during assembly of the switch pole of the circuit breaker, as well as during its operation can lead to misalignment of this drive rod.
  • An object of the present invention is to provide a particularly simple and at the same time inexpensive solution for avoiding misalignment of the drive rod.
  • circuit breaker according to claim 1 or by a method according to claim 8.
  • Advantageous embodiments of the invention are specified in the subclaims. The advantages and embodiments explained below in connection with the circuit breaker also apply mutatis mutandis to the method according to the invention and vice versa.
  • the circuit breaker comprises a vacuum interrupter accommodated in a pole shell with a fixed contact and a moving contact, an electrically insulating drive rod for introducing a drive movement from a switch drive into the moving contact for opening or closing.
  • the method according to the invention for avoiding misalignments of a drive rod of a circuit breaker is characterized in that the drive rod independently aligns itself axially in the pole shell. This self-alignment is done by means of a radially between the drive rod and the pole shell provided guiding and / or centering means which is connected to the drive rod.
  • a basic idea of the invention is to provide a drive rod centering itself in the pole shell.
  • the necessary for the self-alignment constructive means are attached to the drive rod itself.
  • these structural means are attached exclusively to the drive rod itself, so that changes to the pole shell are not required.
  • Lateral movements of the drive rod in the pole shell are prevented by guide rod and / or centering means mounted on the drive rod, which are positioned radially between the drive rod and the pole shell.
  • This is preferably at least one suitable guiding and / or centering element.
  • this element at at least one point along the longitudinal axis of the drive rod to such dimensions that tilting movements of the drive rod in the pole shell substantially excluded, but in any case are reduced to a minimum. In other words, this results in a self-axial alignment of the drive rod in the pole shell or in other words, a self-centering of the drive rod in the pole shell instead.
  • the guide and / or centering element is preferably an annular flange which is adapted in its diameter to a cylindrical shape of the pole shell such that a more or less uniform, minimum annular gap is present when the drive rod is aligned precisely. That tilting movements are reduced to a minimum or a minimum annular gap is present means that an axial longitudinal movement of the drive rod and thus the proper functionality of the drive rod for transmitting a drive movement to the moving contact is not impaired by the guiding and / or centering However, beyond radial play of the drive rod does not exist or is limited as much as possible.
  • the guiding and / or centering element is always adapted to the shape of the pole shell, more precisely to the contour of the inside of the housing of the Wegerpols.
  • the element may also have a polygonal shape to be in a angular cross-section pole shell to prevent tilting of the drive rod.
  • the guiding and / or centering means can be designed as individually manageable construction elements. In one embodiment of the invention, however, the guiding and / or centering means are not only attached to the drive rod, but a component, in particular an integral part of the drive rod. The guiding and / or centering means are then preferably integrally connected to the drive rod, in particular permanently connected to the generally cylindrical base body of the drive rod.
  • the guide and / or centering means need not be provided continuously circumferentially on the drive rod be.
  • the at least one guiding and / or centering element can not abut circumferentially on the inside of the pole shell. In such a case, it may, for. B. be sufficient if the drive rod has a guiding and / or centering element, which has an enlarged diameter only on two opposite sides.
  • the pole shell is not performed circumferentially closed, a circumferential stop or guide surface for the guiding and / or centering so not available. In these latter cases, it is sufficient that at least one guiding and / or centering element according to the structural or functional needs for
  • the drive rod is used not only for the mechanical connection of the vacuum interrupter, more precisely the moving contact of the vacuum interrupter, with the switch drive, but also for the isolation of the switch drive from the contact arrangement.
  • the drive rod may have radially outwardly of the rod body outwardly facing ribs of insulating material to obtain a larger creepage distance.
  • the guide and / or centering element according to the invention can be obtained particularly simply if at least one of these ribs is made larger, in particular such that its outer diameter is only slightly smaller than the inner diameter of the pole shell at this point.
  • the guiding and / or centering element can then be manufactured in the simplest manner in the production of the drive rod or the ribs, for example by means of an injection molding process.
  • the guiding and / or centering element is preferably provided at that end of the drive rod or in the region of that end of the drive rod, which faces the vacuum interrupter or the Bewegumblean gleichbolzen the vacuum interrupter, ie at or in the region of the switch drive end facing the drive rod.
  • the constructive design of the Wegerpols is not complicated by the invention, since no additional components are needed.
  • the guiding and / or centering means are designed as part of the drive rod, in particular as an integral part of the drive rod. Due to the fact that the centering element can be molded onto the drive rod or its insulating ribs to be produced anyway from a plastic material, the additional costs are minimal.
  • FIG. 1 shows a switch pole of a conventional circuit breaker
  • FIG. 2 shows a switch pole of a circuit breaker according to the invention
  • FIG. 3 shows a conventional insulating rod
  • FIG. 4 shows an insulating rod according to the invention
  • FIG. 7 shows a third guiding and / or centering element.
  • the 1 shows by way of example a switch pole 2 of a circuit breaker 1, for example a medium-voltage circuit breaker.
  • the two other switch poles 2 of the circuit breaker 1 are not shown.
  • the switch pole 2 has a pole shell 3, in which a vacuum interrupter. 4 is included.
  • the vacuum interrupter 4 is used for switching or interrupting a guided over the circuit breaker 1 current.
  • the details of the vacuum interrupter 4 and the structure of the switch pole 2 are not shown in detail.
  • the person skilled in the art is aware that the fixed contact of the vacuum interrupter 4 is electrically conductively connected to a pole head 5 via a fixed contact connection pin.
  • the pole head 5 is connected to a switchgear in which the circuit breaker 1 is used.
  • the moving contact of the vacuum interrupter 4 is connected via a BewegCountan gleichbolzen with a pole carrier 6, which in turn is electrically connected to the switchgear in which the circuit breaker 1 is used.
  • the lifting movement of the moving contact takes place in the direction of a central axis. 7
  • the vacuum interrupter 4 and the pole carrier 6 are adjoined by an axially movable drive rod 8, which mechanically connects the vacuum interrupter 4 with the merely indicated switch drive 9.
  • the drive rod 8 is coupled to the moving contact, more precisely to the Bewegromean gleichbolzen the vacuum interrupter 4.
  • the drive rod 8 is designed to be electrically insulating or at least has an insulating section in order to ensure electrical isolation between the current path on the one hand and the switch drive 9 on the other hand.
  • the drive rod 8 extends through the arranged in the pole support 6 base plate of the circuit breaker 1 for introducing a symbolized by arrow 13 drive movement in the BewegCountan gleichbolzen to open or close the contact system of the vacuum interrupter 4.
  • FIG. 1 only one connecting means 15 attached to the drive rod 8 at the end, here in the form of a screw nut, for connecting the drive rod 8 to the switch drive 9 is shown.
  • the switch pole 2 of a circuit breaker 1 according to the invention shown in FIG. 2 differs from the switch pole 2 shown in FIG. 1 in that an annular flange 21 is provided at the lower end of the drive rod 8 opposite the moving contact connection bolt or in this end region 14 of the drive rod 8 is provided, whose outer diameter 22 is slightly smaller than the inner diameter 23 of the pole shell 3 at this axial point 24.
  • This annular flange 21 is another, with the main body 11 of the drive rod 8 connected to the insulating rib, as radially between the drive rod On the one hand and the pole shell 3 on the other hand positioned guide and / or centering for independent axial alignment of the drive rod 8 in the pole shell 3 is used.
  • the annular flange 21 is made of a suitable plastic material. placed and integrally connected to the main body 11 of the drive rod 8, in particular molded onto this.
  • the annular flange 21 which completely surrounds the main body 11 of the drive rod 8 is in the example shown here the only structural element along the axis 7 of the drive rod 8 with a diameter 22 which is larger than the further insulating ribs 12.
  • the circumference forms More specifically, the lateral surface 25 of this annular flange 21 with the inner side 18 of the pole shell 3 from a uniform annular gap 26, see Figures 2 and 5.
  • a lateral movement of the drive rod 8 or in other words a movement in the radial direction, d. H. in the direction perpendicular to that central axis 7, in whose direction the drive rod 8 performs a longitudinal movement 13, is thus limited to a minimum, namely the width of the annular gap 26.
  • FIG. 1 A drive rod 8 with such an annular flange 21 is shown in FIG. 1

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un disjoncteur (1) comprenant une ampoule à vide (4) logée dans une coque polaire (3), ladite ampoule comportant un contact fixe et un contact mobile, ainsi qu'une barre d'entraînement (8) électriquement isolante servant à appliquer un mouvement d'entraînement (13) au moyen d'une commande d'interrupteur (9) dans le contact mobile pour ouvrir ou fermer le système de contact de l'ampoule à vide (4). L'invention concerne en outre un procédé de prévention de défauts d'alignement d'une barre d'entraînement (8) d'un disjoncteur (1) de ce type. Afin de fournir une solution particulièrement simple et en même temps peu onéreuse de prévention de défauts d'alignement de la barre d'entraînement (8), des moyens de guidage et/ou de centrage (21) reliés à la barre d'entraînement (8) et situés radialement entre la barre d'entraînement (8) et la coque polaire (3) sont conçus pour orienter axialement de manière automatique la barre d'entraînement (8) dans la coque polaire (3).
EP15728813.5A 2014-06-30 2015-06-05 Prévention de défauts d'alignement d'une barre d'entraînement d'un disjoncteur Active EP3138113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014212583.9A DE102014212583A1 (de) 2014-06-30 2014-06-30 Vermeidung von Fehlausrichtungen einer Antriebsstange eines Leistungsschalters
PCT/EP2015/062608 WO2016000907A1 (fr) 2014-06-30 2015-06-05 Prévention de défauts d'alignement d'une barre d'entraînement d'un disjoncteur

Publications (2)

Publication Number Publication Date
EP3138113A1 true EP3138113A1 (fr) 2017-03-08
EP3138113B1 EP3138113B1 (fr) 2020-09-16

Family

ID=53396470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15728813.5A Active EP3138113B1 (fr) 2014-06-30 2015-06-05 Prévention de défauts d'alignement d'une barre d'entraînement d'un disjoncteur

Country Status (5)

Country Link
US (1) US10096444B2 (fr)
EP (1) EP3138113B1 (fr)
CN (1) CN106463299B (fr)
DE (1) DE102014212583A1 (fr)
WO (1) WO2016000907A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696822A (zh) * 2020-06-24 2020-09-22 广东电网有限责任公司电力科学研究院 一种真空灭弧室及柱上开关

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017203208A1 (de) * 2017-02-28 2018-08-30 Siemens Aktiengesellschaft Kraftübertragungseinheit für einen Leistungsschalter

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US3189715A (en) * 1962-05-21 1965-06-15 Jennings Radio Mfg Corp Internal shield and seal structure for vacuum sealed switch envelope
US3261954A (en) * 1965-01-11 1966-07-19 Joslyn Mfg & Supply Co Current interruption and separation electrode structure for vacuum switching apparatu
US3440377A (en) 1966-08-08 1969-04-22 Allis Chalmers Mfg Co Removable shield means for vacuum switch bellows
US3594525A (en) * 1969-04-21 1971-07-20 Gen Electric Common parallel operating means for series-connected, laterally offset vacuum switches
US4061894A (en) * 1976-04-28 1977-12-06 General Electric Company Vacuum-type circuit interrupter with improved protection for bellows
US4443672A (en) * 1982-02-11 1984-04-17 International Telephone & Telegraph Corporation Low capacitance radio frequency switch
US5597992A (en) * 1994-12-09 1997-01-28 Cooper Industries, Inc. Current interchange for vacuum capacitor switch
DE19814398C1 (de) * 1998-03-31 1999-12-30 Moeller Gmbh Elektrisches Schaltgerät, insbesondere elektromagnetisches Schaltgerät mit Vakuumschaltröhre
JP3930208B2 (ja) * 1999-10-07 2007-06-13 株式会社日立製作所 真空絶縁開閉装置
DE19959207C2 (de) * 1999-12-08 2001-10-18 Siemens Ag Vakuumschütz mit verschiebbarem Führungselement
FR2836277B1 (fr) * 2002-02-19 2004-04-16 Alstom Mecanisme de commande a ressorts pour disjoncteur a mouvement rectiligne
DE10207892B4 (de) * 2002-02-20 2004-02-05 Siemens Ag Vakuumschaltröhre mit einem Schaltkontaktstück
CN201075805Y (zh) 2007-08-04 2008-06-18 万德鸿 超大转矩低速变频轮毂电机
JP5297682B2 (ja) * 2008-04-24 2013-09-25 株式会社明電舎 真空遮断器
DE202011106188U1 (de) * 2011-09-30 2013-01-09 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co Schalterpoleinheit
EP2682974A1 (fr) * 2012-07-06 2014-01-08 ABB Technology AG Ensemble de tige poussoir destiné à un disjoncteur sous vide à moyenne tension
CN203339047U (zh) * 2013-03-20 2013-12-11 广东维能电气有限公司 腰支旋转式均压带接地屏蔽高压真空灭弧室固封极柱

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696822A (zh) * 2020-06-24 2020-09-22 广东电网有限责任公司电力科学研究院 一种真空灭弧室及柱上开关
CN111696822B (zh) * 2020-06-24 2022-06-14 广东电网有限责任公司电力科学研究院 一种真空灭弧室及柱上开关

Also Published As

Publication number Publication date
EP3138113B1 (fr) 2020-09-16
CN106463299A (zh) 2017-02-22
DE102014212583A1 (de) 2015-12-31
US20170133181A1 (en) 2017-05-11
WO2016000907A1 (fr) 2016-01-07
US10096444B2 (en) 2018-10-09
CN106463299B (zh) 2019-09-27

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