EP2188823B1 - Tige de commutation isolante - Google Patents

Tige de commutation isolante Download PDF

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Publication number
EP2188823B1
EP2188823B1 EP08803933.4A EP08803933A EP2188823B1 EP 2188823 B1 EP2188823 B1 EP 2188823B1 EP 08803933 A EP08803933 A EP 08803933A EP 2188823 B1 EP2188823 B1 EP 2188823B1
Authority
EP
European Patent Office
Prior art keywords
insulating
switching rod
helical compression
insulating body
drive element
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.)
Active
Application number
EP08803933.4A
Other languages
German (de)
English (en)
Other versions
EP2188823A1 (fr
Inventor
Ralf-Reiner Volkmar
Marianne Peter
Gottfried Schuster
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
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 EP2188823A1 publication Critical patent/EP2188823A1/fr
Application granted granted Critical
Publication of EP2188823B1 publication Critical patent/EP2188823B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 shift rod with a drive element for initiating a drive movement in an electrical contact system of a switching device and for generating a contact force in the closed state of the contact system with a clamping device for the drive element of the shift rod to maintain the contact force.
  • Such an insulating switching rod is known from the prior art.
  • switching devices such as circuit breakers
  • the insulating switching rod serves on the one hand for galvanic separation of the drive unit from the contact system and on the other hand to initiate 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 acts between a drive element and a housing of the shift rod, so that when closed by the tensioning device, the contact force is maintained on the contact system.
  • the tensioning device comprises an arrangement of helical compression springs, by means of which the contact force is generated.
  • the helical compression spring is surrounded by a housing part, which in turn is integrated in a housing part for the shift rod, wherein both the two Housing parts and connecting and / or cover parts of the housing parts are made of insulating material.
  • the housing parts are fastened together by screw connection and to the switching device by means of a flange, as for example from DE 197 16 956 A1 .
  • DE 9319264 U1 or DE 9203990 U1 is known.
  • a clamping connection from the DE 3742459 A1 known. This represents a particularly complex and complex construction.
  • Object of the present invention is to provide an insulating shift rod of the type mentioned in such a way that it is simple to assemble and mount, with no torsional moments are to be introduced into the switch contact system when mounted.
  • the mountable in the switching device shift rod due to the bias spring force of the tensioning device is quasi one piece movable and can only be disassembled in their disassembled from the interrupter state by means of targeted external force and torque introduction.
  • the plug-and-lock connection allows the plug-and-lock connection the reduction of Isolierstoffmaschine the shift rod on two insulator. Due to the avoidance of metal parts required in the prior art, the insulating shift rod according to the invention (also called Isolierschaltstange) is easy to manufacture and inexpensive.
  • a possible simple embodiment of the invention provides that the plug-and-detent connection is designed in the form of a bayonet closure. As a result, a simple and quick to manufacture and releasable mechanical connection of shift rod and drive element is possible. These are connected by nesting and twisting each other and pressed against each other. In addition, a catch can be provided to secure the connection.
  • the shift rod and the drive element are each surrounded by an associated insulating body, which are plugged into one another and locked together.
  • an associated insulating body which are plugged into one another and locked together.
  • only two insulating or insulating parts are required, in which one or more spring elements, in particular helical compression springs can be inserted as a clamping device.
  • the two insulating bodies in a simple manner in casting, injection molding or other suitable method for producing the complex body geometry can be produced.
  • one of the insulating body, in particular of the switching rod surrounding the insulating body is fixed and thus stored stationary and the surrounding the drive element insulating body movably.
  • the drive element in a simple manner by handling a single movable insulating body, the up on the stationary insulator or used and on or in this longitudinally movable and rotatable feasible and can be latched, mounted and dismounted.
  • the clamping device is associated with one of the insulating body.
  • at least the insulating element associated with the switching rod has a cavity in which a helical compression spring arrangement is arranged as a clamping device, which comprises at least one helical compression spring arranged around the switching rod.
  • the tensioning device may comprise a helical compression spring arranged around the drive element.
  • a plurality of separate and / or nested helical compression springs can be arranged in each case around the drive element and / or the shift rod.
  • the tensioning device designed as a helical compression spring arrangement may comprise separate mutually opposite and a plurality of oppositely wound and nested helical compression springs, which have a total of a large spring force.
  • a clamping device it is possible with such a clamping device to produce large contact forces of 3500 N to 5000 N at a working stroke between 0 mm and 5 mm with a compact construction volume, wherein the helical compression spring arrangement an average spring rate of 200 N / mm at an unstretched length of approx 100 mm and for a given inner and outer coil diameter.
  • a buckling safety of the helical compression spring assembly is substantially increased because one or more mutually opposed helical compression springs are stably guided or the counter-wound helical compression springs mutually stabilize against buckling, whereby the wear of the device is reduced.
  • the helical compression spring assembly also has no edges, so that friction effects on the wall of the cavity are reduced and the wear of the Spring is lowered.
  • helical compression springs compared to previously conventional disc springs on a flatter characteristic with a comparatively constant contact force in the wake.
  • the two insulating body are provided in a further advantageous embodiment on the inside and / or outside with locking grooves and / or snap-in hooks.
  • the insulating body are provided with mutually corresponding locking grooves and latching hooks which engage positively and non-positively in the inserted and latched state.
  • B. during the switching process can additionally reinforcing elements, for. B. star-shaped integrated metallic struts, be provided.
  • guide grooves can additionally be provided on at least one of the insulator, in particular on the stationary insulator inside or outside.
  • the guide grooves can be provided with a suitable lubricant.
  • the locking grooves can serve as guide grooves.
  • FIG. 1 shows a switch pole 1 of a circuit breaker known as such for switching or interrupting currents of a multi-phase AC network.
  • the switch pole 1 comprises an insulating housing 2, in which a first connection piece 3 and a second connector, not shown, for connection to figuratively not shown busbars or output conductor of the switching device are arranged.
  • a drive unit 4 is provided to initiate a drive movement in an electrical contact system of a trained as a vacuum interrupter 5 switching device.
  • an electrically conductive connection via the contact system of the vacuum interrupter 5 by means of, for example, designed as a magnetic drive unit 4 can be prepared or separated.
  • the drive unit 4 engages in order to initiate the drive movement, in particular a translational movement and / or a rotational movement in the drive bolt 8.
  • the insulating shift rod 7 comprises the connecting rod 6.
  • the insulating shift rod 7 and the drive bolt 8 are each surrounded by an associated insulating body 9 and 10 respectively.
  • the insulating body 9 and 10 are made of insulating material.
  • the connecting rod 6 and the drive pin 8 are part of the insulating shift rod 7, which with respect to the FIGS. 2 to 8 will be explained in more detail below.
  • the insulating shift rod 7 is mechanically coupled to the drive unit 4 via the drive pin 8, via which a drive movement is introduced into the moving contact element of the vacuum interrupter 5.
  • FIG. 2 shows the insulating shift rod 7 with drive pin 8 FIG. 1 in a detailed view.
  • the insulating shift rod 7 comprises the insulating body 9, in which the connecting rod 6 is cast.
  • the insulating body 10 of the drive pin 8 is cast.
  • the insulating body 9 has a cylindrical cavity 11, which is closed by means of the other insulating body 10.
  • the cast-in in the insulating body 9 connecting rod 6 and cast in the insulating body 10 drive pin 8 extend surrounded by the insulating material from the respective bottom of the insulating body 9 and 10 out cylindrically.
  • the drive bolt 8 further has a connection-like portion 12, which serves to receive a connection element, not shown.
  • the two insulating body 9 and 10 are plug-in connection 13 in or one another plugged and locked together connectable.
  • the insulating body 9 is stationary with the connected to the vacuum interrupter 5 connecting rod 6 and thus executed fixed.
  • the insulating body 10 with the drive pin 8 is movable, in particular longitudinally movable and rotatable.
  • the cavity 11 at its open end 13 a introduced into the wall of the fixed insulator 9, for example, segmentally circumferential groove-shaped and serving as a locking groove 14 recess.
  • the movable insulating body 10 has for this purpose a serving as a latching hook 15 projection on, which is guided in the locking groove 14 and can be latched in an end position.
  • the detent groove 14 limited by the height of the movement of the locking groove 14 longitudinally movable and rotatably guided insulator 10 and thus serves as a stop element.
  • the height of the locking groove 14 is chosen so that it is substantially greater than the height of the latching hook 15.
  • the height or the course of the locking groove 14 is selected such that by means of the clamping device 18, a biasing force is set.
  • a tensioning device 18 is a helical compression spring arrangement (hereinafter called helical compression spring assembly 18) arranged with at least one helical compression spring F.
  • the helical compression spring assembly 18 is biased at a single helical compression spring F between a spring plate 16 arranged in the bottom region of the cavity 11 and a further spring plate 17 arranged in the bottom region of the insulating body 10.
  • the helical compression spring F has an inner diameter on which the outer diameter of the cylindrical elevations from the bottom regions of the two insulating 9 or 10 corresponds, so that the helical compression spring F is guided on the inner wall of these surveys.
  • the helical compression spring assembly 18 may comprise two separate helical compression springs F1 and F2, which are arranged opposite each other on the connecting rod 6 and the drive pin 8 and are moved towards each other and biased upon actuation of the drive pin 8.
  • the helical compression spring arrangement 18 a tilting security of the spring arrangement is ensured because the helical compression spring / F or F1, F2 out in the spring plates 16, 17 and is stabilized against tilting or are.
  • the helical compression spring arrangement 18 it is possible, in particular, to generate large contact forces of 3,500 to 5,000 N with a working stroke between 0 and 5 mm, the helical compression spring arrangement 18 having an average spring rate of 200 N / mm at an unstretched length of approx 100 mm and for a given inner and outer coil diameter.
  • this may also include more than one helical compression spring. In the case of several helical compression springs, these can in particular be wound in opposite directions.
  • Figures 3 and 4 show different embodiments of different housing shapes of the insulating body 9 and 10 and different plug-and-detent connections 13th
  • the detent groove 14 is inserted on the fixed insulating body 9 on the outside in the wall thereof.
  • the movable insulating body 10 has with the locking groove 14 corresponding locking hooks 15 which engage around the fixed insulating body 10 and are guided in the locking groove 14 longitudinally movable and rotatable in this latched.
  • the insulating body 10 also has a cavity 19.
  • the two insulating body 9 and 10 are performed in the manner of nested bells, wherein in the inner wall of the stationary insulating body 9, the locking groove 14 is introduced, in which a projection of the insulating body 10 is guided as a latching hook 15 longitudinally movable and rotatable and latched.
  • FIGS. 5 to 8 show schematically in longitudinal section an embodiment of an insulating shift rod 7 according to the invention with a constructed as a bayonet lock plug and locking connection 13 of shift rod 7 and drive pin 8 in different plug and detent positions.
  • the movable insulating body 10 of the drive pin 8 is inserted into the opening area and the cavity 11 of the stationary or fixed insulating body 9 and 10, in particular plugged.
  • both or only one of the two insulating body 9 and 10 is movable during assembly / disassembly - the two insulator 9 and 10 are also inserted into one another.
  • the latching hooks 15 are radially from the movable insulating body 10.
  • the two insulators 9 and 10 are, as in FIG. 6 shown plugged into each other in the insertion direction to a stop and then at least one of the two insulating 9 or 10 or both mutually rotated to a rotation stop and then moved against the direction of insertion to a latching stop and there latching connected, as in FIGS. 7 and 8 shown.
  • Such as a bayonet lock plug-and-latching connection 13 is a simple and quick to manufacture and releasable mechanical connection of shift rod 7 and drive bolt 8 allows.
  • FIGS. 5 to 8 illustrated embodiment of the male and female connection 13 is an embodiment, wherein the number, type, shape and / or the course of latching hooks 15 and / or locking grooves 14 may vary.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (8)

  1. Barre ( 7 ) de commutation isolante, comprenant un élément ( 8 ) d'entraînement pour déclencher un déplacement d'entraînement dans un système de contact électrique d'un appareil de commutation et pour produire une force de contact à l'état fermé du système de contact avec un dispositif ( 18 ) de serrage de l'élément ( 8 ) d'entraînement de la barre ( 7 ) de commutation pour le maintien de la force de contact, la barre ( 7 ) de commutation et l'élément ( 8 ) d'entraînement pouvant être reliés directement ou indirectement au moyen d'une liaison ( 13 ) à enfichage et à encliquetage,
    caractérisée en ce que
    la barre ( 7 ) de commutation et l'élément ( 8 ) d'entraînement sont entourés respectivement d'une pièce ( 9, 10 ) isolante associée, qui peuvent être enfichées l'une dans l'autre et être encliquetées l'une à l'autre.
  2. Barre ( 7 ) de commutation isolante suivant la revendication 1,
    caractérisée en ce que la liaison ( 13 ) à enfichage et encliquetage est constituée à la manière d'une fermeture à baïonnette.
  3. Barre ( 7 ) de commutation isolante suivant la revendication 1,
    caractérisée en ce que l'une des pièces ( 9 ) isolante est fixe, l'autre pièce ( 10 ) isolante pouvant y être de manière mobile enfichée et encliquetée.
  4. Barre ( 7 ) de commutation isolante suivant l'une des revendications 1 à 3,
    caractérisée en ce que au moins la pièce ( 9 ) isolante associée à la barre ( 7 ) de commutation a une cavité ( 11 ) dans laquelle est formée comme dispositif ( 18 ) de serrage un agencement à ressort de compression hélicoïdal composé d'au moins un ressort ( F, F1 ) de compression hélicoïdal, disposé autour de la barre ( 7 ) de commutation.
  5. Barre ( 7 ) de commutation isolante suivant l'une des revendications 1 à 4,
    caractérisée en ce que le dispositif ( 18 ) de serrage a en outre un ressort ( F, F2 ) de compression hélicoïdal disposé autour de l'élément ( 8 ) d'entraînement.
  6. Barre ( 7 ) de commutation isolante suivant l'une des revendications 1 à 5,
    caractérisée en ce que respectivement plusieurs ressorts ( F, F1, F2 ) de compression hélicoïdaux emboîtés les uns dans les autres ou distincts sont disposés autour de l'élément ( 8 ) d'entraînement et/ou de la barre ( 7 ) de commutation.
  7. Barre ( 7 ) de commutation isolante suivant l'une des revendications 1 à 5,
    caractérisée en ce que les pièces ( 9, 10 ) isolantes sont pourvues du côté intérieur et/ou du côté extérieur d'au moins une rainure ( 14 ) d'encliquetage et/ou d'au moins un crochet ( 15 ) d'encliquetage.
  8. Barre ( 7 ) de commutation isolante suivant l'une des revendications 1 à 7,
    caractérisée en ce que les pièces ( 9, 10 ) isolantes sont pourvues de rainures ( 14 ) d'encliquetage et de crochets ( 15 ) d'encliquetage, qui se correspondent les uns aux autres et qui s'interpénètrent à complémentarité de forme et à complémentarité de force à l'état enfiché.
EP08803933.4A 2007-09-11 2008-09-10 Tige de commutation isolante Active EP2188823B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044244 2007-09-11
PCT/EP2008/061966 WO2009034092A1 (fr) 2007-09-11 2008-09-10 Tige de commutation isolante

Publications (2)

Publication Number Publication Date
EP2188823A1 EP2188823A1 (fr) 2010-05-26
EP2188823B1 true EP2188823B1 (fr) 2015-08-26

Family

ID=40050049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08803933.4A Active EP2188823B1 (fr) 2007-09-11 2008-09-10 Tige de commutation isolante

Country Status (3)

Country Link
US (1) US8309872B2 (fr)
EP (1) EP2188823B1 (fr)
WO (1) WO2009034092A1 (fr)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
EP2278603B1 (fr) * 2009-07-20 2018-09-12 ABB Schweiz AG Procédé de fabrication d'une borne de courant pour un élément de pôle intégré
EP2460637B1 (fr) * 2010-12-03 2013-11-13 ABB Technology AG Tige de poussée d'un interrupteur sous vide et son procédé de fabrication
KR101786518B1 (ko) * 2011-04-27 2017-10-18 엘에스산전 주식회사 가스 절연 차단기용 소호부
CN102420073B (zh) * 2011-08-09 2014-02-19 北京双杰电气股份有限公司 双向负荷绝缘拉杆
US10978256B1 (en) 2013-03-15 2021-04-13 Innovative Switchgear IP, LLC Electrical switching device
DE102013221910A1 (de) * 2013-10-29 2015-04-30 Siemens Aktiengesellschaft Elektrischer Schalter
CN103824724B (zh) * 2014-03-08 2016-06-15 浙江华仪电器科技有限公司 一种双向绝缘拉杆
US9396896B2 (en) * 2014-06-09 2016-07-19 Eaton Corporation Modular vacuum interruption apparatus
EP3104390B1 (fr) * 2015-06-11 2017-08-09 ABB Schweiz AG Dispositif de commutation et appareillage de commutation de distribution de puissance électrique
DE102017212066A1 (de) * 2017-07-14 2019-01-17 Siemens Aktiengesellschaft Kontaktanpressanordnung
DE112023005979T5 (de) * 2023-03-15 2025-12-31 Mitsubishi Electric Corporation Isolationsstab und schalter

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Also Published As

Publication number Publication date
US20100307893A1 (en) 2010-12-09
EP2188823A1 (fr) 2010-05-26
WO2009034092A1 (fr) 2009-03-19
US8309872B2 (en) 2012-11-13

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