EP1134761B1 - Sélecteur de prises et écran annulaire pour sélecteur de prises - Google Patents

Sélecteur de prises et écran annulaire pour sélecteur de prises Download PDF

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Publication number
EP1134761B1
EP1134761B1 EP00127393A EP00127393A EP1134761B1 EP 1134761 B1 EP1134761 B1 EP 1134761B1 EP 00127393 A EP00127393 A EP 00127393A EP 00127393 A EP00127393 A EP 00127393A EP 1134761 B1 EP1134761 B1 EP 1134761B1
Authority
EP
European Patent Office
Prior art keywords
clamping
ring
switch column
screening
contact carrier
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.)
Expired - Lifetime
Application number
EP00127393A
Other languages
German (de)
English (en)
Other versions
EP1134761A2 (fr
EP1134761A3 (fr
Inventor
Wolfgang Dipl.Ing. Albrecht (Tu)
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 EP1134761A2 publication Critical patent/EP1134761A2/fr
Publication of EP1134761A3 publication Critical patent/EP1134761A3/fr
Application granted granted Critical
Publication of EP1134761B1 publication Critical patent/EP1134761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • 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

Definitions

  • the invention relates to a tap changer for tapped transformers according to the preamble of the first claim.
  • the invention further relates to a particularly suitable for such a tap changer shield ring.
  • tap changers for tapped transformers are known from the publication "tap-changer type V" of the applicant. They consist essentially of an oil vessel formed by a insulating cylinder and a tap changer insert therein. On the inner wall of the oil vessel, the stationary contacts are arranged in different horizontal planes, the connecting elements are each guided through the wall to the outside and are connected to a tap of the control winding of the connected stage transformer in combination.
  • the tap-changer insert contains the entire movable contact system. It comprises a rotatably mounted in the interior of the oil vessel rotatable switch column, are fixed to the one above the other, respectively in the same horizontal planes as the associated to be connected fixed contacts, contact carrier or articulated.
  • the contact carriers in turn carry the movable switch contacts or rollers and other switching means or elements of the tap changer.
  • concentrically extending shield rings are provided around the switch column, which generally have an approximately circular or oval, open in the direction of the associated contact system, cross-section.
  • Mounting brackets or straps are integrally formed on these shield rings by means of which the shield rings are screwed to the circumference of the switch column.
  • each contact carrier by a two-piece clamping ring, which includes the switch column attached thereto.
  • the clamping ring in turn has flanges on its outer circumference, to each of which a shield ring can be attached.
  • mounting bracket o. ⁇ . At the respective shield ring for screwing with the flanges required.
  • the object of the invention is to provide a tap changer, are attached to the screen in a simple manner and without additional fastening means.
  • Another object of the invention is to provide a suitable, as simple as possible umbrella ring, which can be easily produced and assemble specify.
  • the tap changer according to the invention has the great advantage that on its switch column the shield rings of each contact system are respectively clamped directly to the two clamping rings or mounting clamps which comprise the switch column and secure in a known manner the contact carrier force and form fit on this.
  • the shielding rings according to the invention which are suitable for such clamping, have a specially designed concentric clamping shank with a clamping region for this purpose. These shield rings are advantageously formed in one piece and do not need to with additional angles o.
  • A. Fasteners are provided; They can be produced in a single operation and thus require no major subsequent or further processing or pre-assembly of additional parts.
  • FIG. 1 will be explained in more detail. Inside the not shown, formed by a Isolierstoffzylinder, housing of the tap changer extends longitudinally and centrally through this a known switch column 1, preferably made of FRP or other insulating material, which carries all the movable switching elements.
  • the switch column 1 is rotatable in a known manner; This usually serve Maltese drives, which are not shown here.
  • the switch column 1 carries in each plane to be connected - not shown - fixed stage contacts, here only one such level 2 is shown, a bearing block 3.
  • the bearing block 3 each has an upper two-piece clamping ring 4 and a lower, also two-piece clamping ring 5 for attachment.
  • Both parts 41, 42 of the upper clamping ring 4 and both parts 51, 52 of the lower clamping ring 5 include the switch column 1 and are each clamped by outside the switch column 1 arranged clamping screws 6, 7 frictionally on the switch column 1.
  • a part 41, 51 of each clamping ring 4, 5 is formed as an integral part of the bearing block 3; the other part 42, 52 each Clamping ring 4, 5 is designed as a corresponding mounting clamp.
  • the bearing block 3 in turn has a bearing point 31, on which the actual - not shown here - contact carrier, which receives the mechanical and electrical switching elements, is articulated movable. Such a movable linkage is described in detail in DE 198 21 775 C1.
  • both parts 41, 42 of the upper clamping ring 4 and both parts 51, 52 of the lower clamping ring 5 each at its the switch column 1 facing cylindrical inner surface a circumferential clamping groove 411, 421; 511, 521 on.
  • an upper shield ring 14 with its open side facing the contact system, is fastened in its circumferential clamping groove 411, 421 in the region of the upper clamping ring 4, and another identical shield ring 14 in an inverted mounting position, likewise with the open side faces the contact system, in the region of the lower clamping ring 5 in the clamping groove 511, 521 is attached.
  • the shield rings 14 are attached in a simple manner to the switch column 1, without the need for additional fastening means.
  • such a shield ring 14 is shown alone. It consists of thin material, preferably made of thin sheet steel, from which it can be manufactured in a combined operation by pressing and rolling. It has a shield plate 141, the free side is open at the top; This area realizes the actual electrical screening effect. At this Ableteller 141 a circumferential, rolled edge 142 is formed, which is open to one side.
  • the shield ring 14 also has an integrally formed, tulip-shaped attachment shaft 143, which in turn has a guide region 144 and at its free end a clamping region 145.
  • the shield ring 14 as a whole is a completely rotationally symmetrical component whose molded attachment shaft 143 is dimensioned such that the entire shield ring 14 can be slid over the rake column 1.
  • the inner diameter of the guide portion 144 is only slightly larger than the outer diameter of the corresponding switch column 1.
  • the clamping portion 145 of the shield ring 14 has at its free end a slightly larger diameter than the guide portion 144, so that it with the respective clamping groove 411, 421; 511, 521 of the respective clamping ring 4, 5 corresponds and in this form-fitting in the axial direction intervenes.
  • FIG. 3 once again shows a section from above through the tap changer already shown in FIG. 1 in the sectional plane A-A, but without mounted shielding rings.
  • the two parts 41, 42 of the upper clamping ring 4 and the bearing block 3 can be seen.
  • the clamping grooves 411, 421 are shown, which here - as already explained as particularly advantageous - inwardly directed prongs 412, 422, by means of the mounting of a shield ring 14 whose inserted clamping portion 145 when tightening the clamping screws 6 is deformed.
  • the two parts 51, 52 of the lower clamping ring 5, not shown here have completely analog also clamping grooves with teeth.
  • the advantages of the shielding ring 14 according to the invention described are manifold. First of all, it is a completely rotationally symmetrical component with almost ideal electrical shielding properties. Such a shield ring 14 is easy to manufacture, easy to assemble and disassemble and not least by the one-piece design in itself stable and resistant to stress of all kinds, especially against originating from the transformer vibrations.

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Motor Or Generator Frames (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (3)

  1. Commutateur à gradins pour des transformateurs à gradins comprenant :
    - un cylindre en matériau isolant qui forme le boîtier et dont le côté intérieur comporte des contacts à gradins connectables, et fixes
    - entraîné en rotation par une colonne de commutation (1) placée dans l'espace intérieur, et des moyens d'entraînement,
    - au moins un support de palier (3) pour un support de contact qui peut s'y articuler ou au moins un tel support de contact directement fixé par combinaison de forces à la colonne de commutation (1) au moins dans un plan (2) horizontal, à l'aide respectivement d'une bague de serrage (4) supérieure en deux parties (41, 42) et à l'aide d'une bague de serrage (5) inférieure en deux parties (51, 52), de telle manière que chacune des deux parties (41, 42 ; 51, 52) de chaque bague de serrage (4, 5) peut être contrainte l'une par rapport à l'autre par au moins une vis de serrage (6, 7), et
    - un bouclier statique (14) de part et d'autre de chaque support de palier (3) ou de chaque support de contact, de telle manière que les côtés ouverts des deux boucliers statiques (14) placés de part et d'autre de chaque support de palier (3) ou de chaque support de contact sont tournés l'un vers l'autre,
    caractérisé en ce que
    - la bague de serrage (4) supérieure en deux parties (41, 42) de même que la bague de serrage (5) inférieure en deux parties (51, 52) comportent chacune une rainure de serrage (411, 421, 511, 521) sur leur surface intérieure tournée vers la colonne de commutation (1), et
    - chaque bouclier statique (14) comporte une tige de fixation (143) qui à son tour comporte à son extrémité libre une zone de serrage (145) cylindrique dont le diamètre correspond à chacune des rainures de serrage (411, 421, 512, 521) et qui est bloquée dans celle-ci entre la bague de serrage (4, 5) soit supérieure soit inférieure et la colonne de commutation (1).
  2. Commutateur à gradins selon la revendication 1, dans lequel le contour de chacune des rainures de serrage (411, 421, 512, 521) est muni de dentelures (412, 422), de telle manière que quand on insère un des boucliers statiques (14) sa zone de serrage (145) peut se déformer.
  3. Bouclier statique (14) à fixer à une colonne de commutation (1) d'un commutateur à gradins d'après la revendication 1, caractérisé en ce qu'
    - il est en tôle mince et en une seule pièce en formant un composant pratiquement en symétrie de révolution,
    - il comporte un disque de blindage (141) dont un bord (142) périphérique et recourbé est ouvert d'un côté,
    - une tige de fixation en U qui s'étend vers le côté ouvert du bord (142) est façonnée sur le disque de blindage (141), et
    - à son extrémité libre la tige de fixation (143) pour sa part a une zone de serrage (145) dont le diamètre est supérieur à celui du reste de la tige de fixation (143) et qui correspond à une des rainures de serrage (411, 421, 512, 521) d'une bague de serrage (4, 5), de telle manière qu'elle puisse être serrée dans cette rainure et donc sur la colonne de commutation (1).
EP00127393A 2000-03-11 2000-12-14 Sélecteur de prises et écran annulaire pour sélecteur de prises Expired - Lifetime EP1134761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011966 2000-03-11
DE10011966A DE10011966C1 (de) 2000-03-11 2000-03-11 Stufenschalter und Schirmring für einen Stufenschalter

Publications (3)

Publication Number Publication Date
EP1134761A2 EP1134761A2 (fr) 2001-09-19
EP1134761A3 EP1134761A3 (fr) 2004-07-14
EP1134761B1 true EP1134761B1 (fr) 2006-03-08

Family

ID=7634399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127393A Expired - Lifetime EP1134761B1 (fr) 2000-03-11 2000-12-14 Sélecteur de prises et écran annulaire pour sélecteur de prises

Country Status (3)

Country Link
EP (1) EP1134761B1 (fr)
AT (1) ATE320076T1 (fr)
DE (2) DE10011966C1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006308A1 (de) 2010-01-30 2011-08-04 Maschinenfabrik Reinhausen GmbH, 93059 Laststufenschalter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219428A1 (de) * 1992-06-11 1993-05-19 Slamecka Ernst Vakuumschaltroehre
DE9405427U1 (de) * 1994-03-30 1995-04-27 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Lastwähler mit Überschaltwiderständen
DE9407087U1 (de) * 1994-04-28 1995-08-24 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Lastwähler
DE19821775C1 (de) * 1998-05-14 1999-10-14 Reinhausen Maschf Scheubeck Lastwähler

Also Published As

Publication number Publication date
DE10011966C1 (de) 2001-06-28
ATE320076T1 (de) 2006-03-15
EP1134761A2 (fr) 2001-09-19
EP1134761A3 (fr) 2004-07-14
DE50012355D1 (de) 2006-05-04

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