EP0035604B1 - Sicherheitsvorrichtung für Laststufenschalter - Google Patents

Sicherheitsvorrichtung für Laststufenschalter Download PDF

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Publication number
EP0035604B1
EP0035604B1 EP80200222A EP80200222A EP0035604B1 EP 0035604 B1 EP0035604 B1 EP 0035604B1 EP 80200222 A EP80200222 A EP 80200222A EP 80200222 A EP80200222 A EP 80200222A EP 0035604 B1 EP0035604 B1 EP 0035604B1
Authority
EP
European Patent Office
Prior art keywords
shaft
driving shaft
driven shaft
uncoupling
geneva stop
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
Application number
EP80200222A
Other languages
English (en)
French (fr)
Other versions
EP0035604A1 (de
Inventor
Etienne Koch
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.)
Umicore NV SA
Original Assignee
Ateliers de Constructions Electriques de Charleroi SA
ACEC SA
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 Ateliers de Constructions Electriques de Charleroi SA, ACEC SA filed Critical Ateliers de Constructions Electriques de Charleroi SA
Priority to DE8080200222T priority Critical patent/DE3064674D1/de
Priority to AT80200222T priority patent/ATE4566T1/de
Priority to EP80200222A priority patent/EP0035604B1/de
Publication of EP0035604A1 publication Critical patent/EP0035604A1/de
Application granted granted Critical
Publication of EP0035604B1 publication Critical patent/EP0035604B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
    • H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
    • 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
    • H01H9/0027—Operating mechanisms
    • H01H9/0033—Operating mechanisms with means for indicating the selected tap or limiting the number of selectable taps

Definitions

  • the passage from one tap of the transformer adjustment winding to the next tap is made by displacement of a mobile equipment fitted with electrical contacts.
  • This mobile assembly driven by a motor device, can run through a whole series of sockets, arranged one after the other, along a circumference, inside an insulating tube forming a sealed enclosure. or not in the transformer curve.
  • Each of these sockets is at a different electrical potential, spanning the entire adjustment winding.
  • the safety devices are multiple and are often placed outside the transformer tank in a control box leaned against one of the walls of the transformer tank because the size of these devices is quite large, especially in height.
  • the safety device is a clutch inserted at the head of the mechanical transmission and controlled by a position repeater, which indicates at the level of the control box, the position occupied by the moving equipment.
  • the invention as defined in claim 1 completely eliminates this risk by including, inside the on-load tap-changer, a safety device controlled by the crew itself. In this way, a discrepancy between the actual position of the moving element and the position displayed on the control box does not cause any damage to the transformer. In addition, as will be explained later, the device which is the subject of the invention automatically re-establishes the agreement between the position of the mobile assembly and its display on the control box.
  • a charge selector is placed in a sealed enclosure 1 inside a tank 2 of a transformer.
  • This sealed enclosure 1 is closed by an upper cover 3 provided with a window 4 which makes it possible to observe a positioning disc 5 secured to the mobile assembly 6, by means of a control mechanism.
  • This control mechanism 7 is set in motion by a mechanical transmission 8 connected to the motor 9 via a speed reducer 10 and a clutch 11.
  • the position of the moving element 6 is indicated by the positioning disc 5 which bears on the periphery of the marks, identified through the window 4.
  • the position of the moving element 6 is repeated, by means of the mechanical transmission, of the declutching 11 and of the reduction gear 10 by a display disc 12 which can be observed by a window 13 made in a control box 14.
  • This display disc 12 carries at its periphery the same indications as the positioning disc 5 so as to repeat the information on the positioning of the mobile assembly 6 and allow a convenient reading by the window 13 placed at breast height.
  • This arrangement exempts the observer from having to hoist himself on the transformer to read the positioning disc 5 through the window 4.
  • deposits of colloidal carbon partially or completely cover the positioning disc 5 and often make the reading of the positioning disc 5 difficult.
  • This figure also shows a safety device 17 inserted inside the load selector and made soid of the moving element 6 during the manufacture of the load selector.
  • the safety device 17 is placed between the transmission mechanical 8 the control mechanism 7. It is obvious that this safety device 17 can be mounted at another location situated inside the watertight enclosure 1 of the charge selector to be protected from any error mounting element outside the selector.
  • the safety device 17 is directly controlled by the position of the moving assembly 6. Therefore, any discrepancy between the positioning disc 5 and the display disc 12 remains without undesirable consequences.
  • this safety device 17 automatically re-establishes the agreement between the indications given by the positioning disc 5 which translates the exact position of the moving element 6 and the indications given by the display disc 12 which may be erroneous following disassembly of an element external to the sealed enclosure 1 of the charge selector.
  • the moving element 6 is in the position marked 10 by the positioning disc 5, that is to say that the moving element is in contact with the tenth tap of the transformer adjustment winding while , follows a faulty reassembly the display disc 12 is in position 1.
  • the adjustment winding has twenty-one sockets and that the operator starts the installation with the intention of making the crew travel mobil 6 all sockets of the adjustment winding.
  • the safety device 17 operates and immobilizes the moving element 6 while the maneuver continues at the control box 14 until the display disc 12 indicates to are around mark 21.
  • This device therefore allows automatic matching between the position actually occupied by the mobile equipment 6 and the indication repeated at the display disc 12 by a simple maneuver consisting in running through all the taps of the adjustment winding. .
  • This shaft 21 is hollow and is furnished at its end with a needle bearing 22 which ensures both the coaxiality and the free rotation of another shaft 23 constituting the end of the driven part.
  • the driving shaft 21 presents externally a cylindrical end which on a half-circumference has a large diameter and which is connected radially to the smaller diameter of the other half-circumference. From the exit the abre leading 21 has two projections in the form of teeth 24 and 25 whose role will be explained later.
  • the driven shaft 23 carries at its end a circular plate equipped with two axes 27 and 28 parallel to the common axis of rotation of the shafts 21 and 23.
  • a claw 29 or 30 each shaped to snap with one of the teeth 24 or 25 formed at the end of the driving shaft 21.
  • Each of the claws 29 and 30 is respectively held in the latched position with the corresponding tooth 24 or 25 of the driving shaft 21 by means of a tension spring 31 or 32.
  • the fork 33 When it is desired to interrupt the torque transmitted by the driving shaft 21 which, for example, rotates in the opposite direction of the watch hands, the fork 33 is maneuvered so as to rotate it around the axis 36 in anticlockwise, the tooth 35 of the fork 33 lifts the claw 29 by its tip and thus releases this claw 29 secured to the driven shaft 23 of the tooth 24 secured to the driving shaft 21. Dice at this time, there is dissociation between the driving shaft 21 and the driven shaft 23 and the engine force available at the end of the driving shaft 21 is no longer transmitted to the moving assembly 6 which comes to a standstill.
  • the safety device 17 described in FIGS. 2 and 3 must automatically stop the movement of the mobile equipment 6 when the latter arrives at the end of its travel, that is to say when it occurs at one of the sockets connected to the ends of the transformer adjustment winding.
  • connection mechanism which, by the action of a pin 38 secured to the plate 26, drives a disc 39 pivoting about a fixed axis 40 by means of notches 41 located at periphery of a Maltese cross disc 39.
  • a roller 42 mounted on an axis 43 integral with the disc 39 pushes the fork 33 in the proper direction to actuate the safety device 17 according to the process described above.
  • This safety device is remarkable for its simplicity and comparability, the small number of parts which constitute it makes it practically unbreakable and the fact that the pin 38 and the axis 43 which controls the tilting of the fork 33 are almost entirely facing face allows a significant gain in overall height.

Landscapes

  • Train Traffic Observation, Control, And Security (AREA)
  • Push-Button Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Jib Cranes (AREA)
  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (3)

1. Sicherheitsvorrichtung zur Kupplung und Entkapplung zwischen einer treibenden (21) und einer getriebenen (23) Welle bei einem Lastumschalter, der mit einem beweglichen Teil (6) versehen ist, der sich auf festen Kontakten versetzt, die mit Abgriffen einer Regelwicklung eines Transformators verbunden sind, und deren EndStellung durch eine MalteserkreuzVorrichtung (39), die von einem Zapfen (38) gesteurt ist, markiert wird, dadurch gekennzeichnet, daß die getriebene Welle (28) und die antreibende Welle (21) durch ein koaxiales Führungsmittel (22) in Verbindung stehen, daß ein mit der getriebenen Welle (23) einestückig verbundenes Tragelement (26) im Endbereicht der treibenden Welle (21) angeordnet ist, daß vorgenanntes Tragelement (26) einerseits einen Steuerzapfen (38) des Malteserkreuzes (39), anderseits eine Entkupplungsvorrichtung (27, 28,29, 30,31, 32) trägt, die einen Teil (24,25) der antreibenden Welle (21) eingreift, daß das Malteserkreuz wenigstens einen Teile einer Endanschlag-Vorrichtung (42, 43, 34, 35, 36, 37) trägt und daß diese Endanschlag-Vorrichtung die Entkupplung zwischen der treibenden Welle (21) und der getriebenen Welle (23) herbeiführt, indem sie mit de Entkupplungsvorrichtung (27, 28, 29, 30, 31, 32) in Kontakt tritt.
2. Sicherheitsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß über ein Nadellager (22), das am Ende de Bohrung der treibenden Welle (21) angeordnet ist, die angetriebene Welle (23) koaxial zur treibenden Welle (21) gehalten ist und das Erde der getriebenen Welle (23) aufnimmt, daß die treibende Welle (21) mit zwei Vorsprüngen in Form von Zähnen (24 und 25) versehen ist, in welche zwei Klauen (29 und 30) eingreifen, von denen jede um eine Achse (27 oder 28), die enstückig mit der kreisförmigen Platte (26) der angetriebenen Welle verbunden ist, eingreifen und in der Eingriffsstellung durch eine Feder (31 oder 32) gehalten werden, und daß eine Gabel (33) mit zwei Zinken (34 und 35), die um eine Achse (36) parallel
zur Rotationssachse der getriebenen Welle (23) und der treibenden Welle (21) schwenkbar ist, durch eine Schraubenfeder (37) in ihrer Ruhestellung gehalten ist, unter Einwirking einer Zapfenrolle (42), die auf wenigstens einer mit dem Malteserkreuz (39) einstückig verbundenen Achse (43) montiert ist, eine Klaue (29 oder 30) abhebt, um die angetriebene Welle (23) von der treibenden Welle (21) abzukuppeln, daß die Anordnung jeder Achse (43) auf dem Malteserkreuz (39) so getroffen ist, daß die Gabel (33) ausschwingt, sobald sich die bewegliche Garnitur (6) gegebüber dem letzten Abriff der Regelwicklung des Transformators befindet.
3. Sicherheitsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zur Anpassung an eine unterschiedliche Anzahl von Abgriffen der Regelwicklung des Transformators die Position der Achsen (43) auf dem Malteserkreuz (39) veränderbar ist.
EP80200222A 1980-03-07 1980-03-07 Sicherheitsvorrichtung für Laststufenschalter Expired EP0035604B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080200222T DE3064674D1 (en) 1980-03-07 1980-03-07 Safety device for load tap changer
AT80200222T ATE4566T1 (de) 1980-03-07 1980-03-07 Sicherheitsvorrichtung fuer laststufenschalter.
EP80200222A EP0035604B1 (de) 1980-03-07 1980-03-07 Sicherheitsvorrichtung für Laststufenschalter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80200222A EP0035604B1 (de) 1980-03-07 1980-03-07 Sicherheitsvorrichtung für Laststufenschalter

Publications (2)

Publication Number Publication Date
EP0035604A1 EP0035604A1 (de) 1981-09-16
EP0035604B1 true EP0035604B1 (de) 1983-08-31

Family

ID=8186972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200222A Expired EP0035604B1 (de) 1980-03-07 1980-03-07 Sicherheitsvorrichtung für Laststufenschalter

Country Status (3)

Country Link
EP (1) EP0035604B1 (de)
AT (1) ATE4566T1 (de)
DE (1) DE3064674D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078575B4 (de) * 2011-07-04 2013-01-31 Kries-Energietechnik Gmbh & Co.Kg Vorrichtung zur Lastschalterbetätigung
DE102014110731A1 (de) * 2014-07-29 2016-02-04 Maschinenfabrik Reinhausen Gmbh Motorantrieb

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB297529A (en) * 1927-07-11 1928-09-27 Harold Diggle Improvements in or relating to tap changers for electric transformers
GB524456A (en) * 1939-01-30 1940-08-07 Gen Electric Co Ltd Improvements in or relating to operating mechanism more particularly for electric transformer tap changing switches
FR1357433A (fr) * 1962-07-04 1964-04-03 Reinhausen Maschf Scheubeck Sélecteur à plots pour commutateur à étages de transformateurs de réglage
DE1763123B1 (de) * 1968-04-05 1971-03-18 Reinhausen Maschf Scheubeck Vorrichtung zur steuerung der elektrischen endausschaltung und mechanischen sperrung eines hand und motorantriebes von schaltwerken fuer stufenschalter von regeltransfor matoren
DE2545383C3 (de) * 1975-10-10 1978-03-23 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Lastgetriebe mit Endstellungsentkupplung für den Antrieb von Stufenschaltern für Stufentransformatoren

Also Published As

Publication number Publication date
DE3064674D1 (en) 1983-10-06
EP0035604A1 (de) 1981-09-16
ATE4566T1 (de) 1983-09-15

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