EP2666172A1 - Changeur de prise - Google Patents

Changeur de prise

Info

Publication number
EP2666172A1
EP2666172A1 EP12700547.8A EP12700547A EP2666172A1 EP 2666172 A1 EP2666172 A1 EP 2666172A1 EP 12700547 A EP12700547 A EP 12700547A EP 2666172 A1 EP2666172 A1 EP 2666172A1
Authority
EP
European Patent Office
Prior art keywords
contact
switching
contact unit
carriers
pins
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
EP12700547.8A
Other languages
German (de)
English (en)
Other versions
EP2666172B1 (fr
Inventor
Christian Böger
Toni Hottner
Martin Jatta
Philipp Lederer
Sebastian Rehkopf
Klaus Schlepp
Rolf Strempel
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP2666172A1 publication Critical patent/EP2666172A1/fr
Application granted granted Critical
Publication of EP2666172B1 publication Critical patent/EP2666172B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H01H2009/0022—Mounting of the fixed contacts or taps on cylindrical wall of oil vessel containing the tap changer; Details of screening

Definitions

  • the present invention relates to a tap-changer for uninterruptible
  • On-load tap-changers have been used in transformers for many years to adjust the voltage, active and reactive power of electrical networks by changing the transmission ratio under load.
  • the setting of the gear ratio is done in stages;
  • the transformer is equipped with a tap winding whose taps are connected by the tap changer.
  • Insulating tape to be wrapped.
  • Shift shaft must be accessible.
  • this method of attachment has not been able to prevail by wrapping. This is partly due to the fact that with this type of attachment a relatively large amount of space around the switch column around must be present in order to wrap the insulating tape around them and possibly to be able to soak with resin. On the other hand, it is not in this attachment possible, without much effort, the contact carrier to be released from the shift shaft, during maintenance, for example. In this case, the Isolierstoffwicklung is inevitably destroyed and must be reapplied in each case.
  • a load selector or a tap selector for a tapped transformer which consists of a Isolierstoffzylinder, on the inside of fixed stepped contacts are arranged, as well as an arranged inside, rotatable by known drive means, switching shaft.
  • drive means, switching shaft At the shift shaft are one or more
  • Attached contact units each having at least one switching contact.
  • Each of the contact units is by a two-piece, flange
  • the shift shaft include a flange and braced by outside the shift shaft extending clamping means with each other. Furthermore, at least one centering aid is provided on the outer surface of the switching shaft, with the two-piece clamping ring
  • the switching shaft usually made of glass fiber reinforced plastic must be reworked in the known solution mandatory, especially turned off, which brings a significant time and cost.
  • this is absolutely necessary because the two-piece and flange-shaped clamping ring as a support surface requires a well-defined diameter of the shift shaft for a permanent and fixed fixation.
  • a rotation is used in DE 44 14 951 just inserted into a blind hole centering.
  • this proposed by the applicant solution has proven in practice impractical, since the centering pin is unsuitable to transmit forces, but at the same time exposed to high mechanical shear forces when turning the shift shaft. Overall, this results in a potential for improvement from a manufacturing and cost perspective.
  • Object of the present invention is therefore to provide a simple and inexpensive to manufacture contact unit, which also durable and stable with the
  • Switching shaft can be connected and still does not require the
  • Screw contact unit with the switching shaft This object is achieved by a tap changer with the features of the first claim.
  • the subclaims relate to particularly advantageous developments of the invention.
  • the general inventive idea consists in proposing a contact unit of a plurality of identically constructed contact carriers, which can be mounted to each other by simply plugging together to form a finished contact unit, wherein the individual contact carrier, each with a strap clamp to the shift shaft are fixable and further as anti-rotation on each contact carrier , on the shift shaft
  • At least two geometrically specially shaped pins are provided which can be brought into engagement with provided in the shift shaft blind holes in engagement, such that the entire contact unit is thus secured against rotation.
  • the finished contact unit consists of several identically constructed contact carrier, which only have to be plugged together in different directions, this saves the manufacturer enormous manufacturing effort and thus costs. Also accompanied by a simpler spare parts delivery for the manufacturer, since fewer items must be kept for the entire assembly. Instead of a two-piece, flange-like clamping ring to use multiple clamps, has proven to be the
  • FIG. 1 shows a contact unit according to the invention for a tap changer in a side view
  • FIG. 1 shows a contact unit 2 according to the invention constructed from a plurality of identical contact carriers 1 for a step switch not shown in detail, because it is known.
  • the individual contact carrier 1, and thus the entire contact unit 2, are by means of Clamp clamps 3 on one, for reasons of clarity, also not shown, shift shaft mountable.
  • the clamp clips 3 are designed such that they easily adapt to the geometric shape of the switching shaft, in particular permanently and stably adhere to the outer peripheral surface.
  • the respective ends of the clamp clips 3 are provided in provided on the contact carriers 1, having a through hole, blocks 4 and secured by means of fasteners 5, here, for example, with nuts, permanently secured against accidental removal.
  • the contact carriers 1 each have a receiving plate 7 provided with a plurality of bores 6 for switching means, not shown here.
  • the switching means may in particular also be known from the prior art
  • Roll contacts act, which are positioned between the individual mounting plates 7. For reasons of mechanical strength, the receiving plates 7 with
  • Strut sections 8 reinforced. On both side surfaces of the contact carrier 1 are each upwardly and downwardly directed and also in number alternating
  • Latches 9 attached each offset by a few 10ths of a mm, based on their height, are arranged. This is because in each case a bolt 10 can be hammered during assembly of the contact unit 2, which is slightly mechanically deformed by the displaced arrangement of the locking lugs 9 and thus secured against accidental falling out, which in the embodiments of Figures 2a and b will be explained in more detail.
  • Figures 2a and 2b show a single contact carrier 1 according to the invention in a bottom view and a top view.
  • the contact carrier 1 formed from electrically non-conductive material has on both sides, ie both the upper side and the lower side, a plurality of pins 11 and blind holes 12, which are positioned in such a way that
  • the pins 11 engage the respective top of a contact carrier 1 in the blind holes 12 of the corresponding bottom of another contact carrier 1 and vice versa. In this way, any number of contact carriers 1 to a contact unit 2 can be plugged together. Furthermore, the locking lugs 9 protrude so far beyond the lateral wall of the respective contact carrier 1, that during mating of two or a plurality of individual contact carriers 1 in the overlapping region then corresponding locking lugs 19, a bolt 10 can be beaten to hook, which is also apparent in Figure 1. Overall, then there are two or more
  • the contact carrier 1 On the opposite side of the receiving plate 7, the contact carrier 1 has a half-shell portion 13, on which also laterally the blocks 4 for receiving the
  • Clamp clamps 3 are attached. With this half shell 13, the respective contact carrier 1 is arranged on the switching shaft, not shown, a contact-fit. As a rotation and for permanent mechanical fixation, a plurality of geometrically specially shaped pins 14 are mounted on the inside of the half-shell 13, ie on the side facing the shift shaft, which are supported over a large area in provided on the shift shaft blind holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Clamps And Clips (AREA)

Abstract

La présente invention concerne un changeur de prise pour la commutation sans interruption entre différentes prises d'enroulements d'un transformateur à prises selon le préambule de la première revendication. L'invention est caractérisée en ce qu'une unité de contact est constituée de plusieurs porte-contacts identiques, pouvant être assemblés par simple emboîtement de façon à former une unité de contact finie. Les porte-contacts individuels peuvent être fixés sur un arbre de commutation respectivement au moyen d'une attache. Le blocage en rotation est assuré par au moins deux ergots de forme géométrique spéciale situés au niveau de chaque porte-contact sur le côté opposé à l'arbre de commutation et pouvant venir s'insérer dans des trous borgnes ménagés dans l'arbre de commutation de sorte que la totalité de l'unité de contact est ainsi bloquée en rotation.
EP12700547.8A 2011-01-20 2012-01-04 Changeur de prise Active EP2666172B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011008964A DE102011008964B4 (de) 2011-01-20 2011-01-20 Stufenschalter
PCT/EP2012/000018 WO2012097959A1 (fr) 2011-01-20 2012-01-04 Changeur de prise

Publications (2)

Publication Number Publication Date
EP2666172A1 true EP2666172A1 (fr) 2013-11-27
EP2666172B1 EP2666172B1 (fr) 2016-04-06

Family

ID=45507685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12700547.8A Active EP2666172B1 (fr) 2011-01-20 2012-01-04 Changeur de prise

Country Status (7)

Country Link
EP (1) EP2666172B1 (fr)
CN (1) CN103314425B (fr)
BR (1) BR112013016126B1 (fr)
DE (1) DE102011008964B4 (fr)
ES (1) ES2580958T3 (fr)
UA (1) UA116523C2 (fr)
WO (1) WO2012097959A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113192775B (zh) * 2021-04-26 2022-11-18 国网河南省电力公司超高压公司 一种有载调压开关用触头组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB356714A (en) * 1930-06-06 1931-09-07 British Electric Transformer C Improvements in or relating to voltage regulators for electrical transformers
DE3226854A1 (de) * 1982-07-17 1984-01-19 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Lastwaehler fuer stufentransformatoren mit einem schrittweise drehbaren schaltrohr
DE3827385A1 (de) * 1988-08-12 1990-02-15 Reinhausen Maschf Scheubeck Zylindrischer stufenwaehler mit durch einen tragarm aus isolierstoff gefuehrter kontaktbruecke
DE9405427U1 (de) 1994-03-30 1995-04-27 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Lastwähler mit Überschaltwiderständen
ES2146673T3 (es) * 1994-04-28 2000-08-16 Reinhausen Maschf Scheubeck Selector de carga.
DE102007023124B3 (de) * 2007-05-16 2008-10-02 Maschinenfabrik Reinhausen Gmbh Schaltanordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012097959A1 *

Also Published As

Publication number Publication date
EP2666172B1 (fr) 2016-04-06
ES2580958T3 (es) 2016-08-30
WO2012097959A8 (fr) 2013-08-01
BR112013016126B1 (pt) 2020-07-07
DE102011008964A1 (de) 2012-07-26
CN103314425A (zh) 2013-09-18
UA116523C2 (uk) 2018-04-10
CN103314425B (zh) 2016-04-20
WO2012097959A1 (fr) 2012-07-26
BR112013016126A2 (pt) 2018-06-05
DE102011008964B4 (de) 2013-12-24

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