WO2002080209A1 - Systeme de blocage des differentes positions d'un interrupteur-sectionneur de mise a la terre dans des cellules de moyenne tension - Google Patents

Systeme de blocage des differentes positions d'un interrupteur-sectionneur de mise a la terre dans des cellules de moyenne tension Download PDF

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Publication number
WO2002080209A1
WO2002080209A1 PCT/ES2002/000144 ES0200144W WO02080209A1 WO 2002080209 A1 WO2002080209 A1 WO 2002080209A1 ES 0200144 W ES0200144 W ES 0200144W WO 02080209 A1 WO02080209 A1 WO 02080209A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
flange
drive mechanism
disconnector
positions
Prior art date
Application number
PCT/ES2002/000144
Other languages
English (en)
Spanish (es)
Inventor
Javier ORMAZABAL OCERÍN
Original Assignee
Grupo Ormazabal, S.A.
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 Grupo Ormazabal, S.A. filed Critical Grupo Ormazabal, S.A.
Priority to BR0204828-0A priority Critical patent/BR0204828A/pt
Publication of WO2002080209A1 publication Critical patent/WO2002080209A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/06—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using tools as locking means
    • H01H2300/066—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using tools as locking means for locking a switch in a test or an "installation" position

Definitions

  • the present invention relates to a system for blocking the positions of a grounding switch-disconnector, in medium voltage cells that is intended to maintain the operational position of the switch when the respective drive mechanism is removed, in case of carry out a repair, replacement and / or maintenance of the same, thus avoiding having to cut the tension of the cell during these operations.
  • the system also aims to prevent third parties from tampering with the switch-disconnector, as well as preventing it from accidentally changing its position, for example in the event of a short circuit.
  • the switch is free of any retention, so that in certain circumstances, for example in the event of a short circuit, the switch may suffer enough force to rotate its axis, changing the position operational as the only mechanical retention element is precisely the drive mechanism that has been removed.
  • the switch may be in a position, for example open, while the drive command that is connected can be closed, so that acting on the drive controls would produce the opposite effect as expected, with the consequent risks.
  • the switch separated from the drive mechanism loses or is reduced the ability to withstand high electrodynamic stresses, due to network failures, which can change the operating position of the switch but also makes it possible to re-couple the mechanism of actuation, this is in a different position from the one presented by the switch, with the consequent risks as indicated.
  • the blocking system is based on the incorporation of an intermediate connecting element between the axis of the switch and the drive mechanism, so that when the latter is removed or removed the intermediate element is coupled on the axis of the switch and on the external wall of the medium voltage cell or module, without having to disconnect the cell and acting as a blocking element that ensures the maintenance of the operating position of the switch.
  • the aforementioned intermediate element comprises a flange to which a plurality of cylinders regularly distributed in cylindrical concavities provided for this purpose are associated, cylinders that are required to remain in their positions by means of an elastic element that hugs them.
  • the drive mechanism makes a turn, it forces the cylinders to unlock the joint flange, leaving it free of movement during the operation being executed, so that when said drive mechanism reaches the final position the flange is blocked again, blocking the shaft of the earthing switch-disconnector.
  • the cylinders located on the peripheral concavities of the flange are in turn located in free spaces established between a series of perimeter partitions of the main housing, all this in such a way that if with the referred drive mechanism an effort occurs on the switch that tends to rotate the axis thereof, this will be impeded in its movement by the effect of cylinders that are snapped into their respective housings by the effect of the elastic spring, while when acting on the drive mechanism to change the position of the switch, it acts on the flange with sufficient force to produce the extension of the elastic element causing the cylinders to move radially until they are free of their housings, thus allowing the rotation of the flange, all in such a way that after reaching the switch the new operating position, the flange will have been displaced angularly with respect to its initial position and the cylinders, by action of the spring, will have been housed in the semicircular concavities closest to their new position, again blocking the position of the switch against accidental movements.
  • the central passage established in the flange for the end of the axis of the switch has a projection on the basis of which it is only possible to introduce the drive mechanism in a specific position, with what the drive command once removed only admits to be placed in the correct position that will correspond to that of the switch.
  • Another novel feature of the system of the invention focuses on safety means to prevent undue manipulation on the switch, and whose means will be constituted by a simple sliding hatch with respect to the general housing of the assembly, trapdoor that is affected by a circular hole liable to face with respect to the orifice of the flange, allowing the coupling of the drive control, as well as access to the axis of the switch, while if the trapdoor is moved its hole is offset from that of the flange and therefore the axis of the switch is not accessible, position that can be locked by a padlock that is inserted through a hole in the housing itself to prevent the sliding of the trapdoor, from the switch lock position to the position allowed by the drive mechanism coupling.
  • the general housing of the assembly and the corresponding sliding hatch constitute a static system in which the components responsible for the protection and isolation of the rest of the components that constitute a dynamic system of the assembly are located, these components being the flange, the cylinders and the elastic element that constitute the dynamic system as a whole.
  • Figures 1 and 2. show two exploding perspectives of the assembly that forms the locking system object of the invention, in a case corresponding to a top perspective view and in another case to a bottom perspective view.
  • Figures 3 and 4. They show two other perspective views like that of the previous figures, but in this case with the system in a situation of total coupling or assembly of its components.
  • the system of the invention intended to determine a means of blocking a grounding switch-disconnector, when the corresponding command or actuation mechanism is removed, is based on the incorporation of a intermediate connecting or connecting element between the axis of the switch and the aforementioned drive mechanism, said intermediate element remaining, when the mechanism is removed, coupled between the aforementioned axis of the switch and on the external wall of the medium voltage cell or module.
  • the intermediate element in question is constituted from a general housing (1) with a central passage (2) and a series of partitions (3) peripheral to that passage (2), whose partitions (3) have a separation that gives rise to to as many spaces or accommodations (4) whose function will be exposed later.
  • a flange (5) is mounted with a hole (6) for coupling the corresponding axis of the switch-disconnector, counting that flange (5) with a wall or base ( 5 ') affected by a plurality of semi-cylindrical concavities (7) regularly distributed throughout the periphery of that wall (5), provided the concavities (7) for the positioning of as many cylinders (8) that are forced to remain in their positions by means of an elastic element (9), being in turn those cylinders (8) located in the spaces (4) established by the partitions (3) of the housing (1).
  • a projection (10) is provided that allows the introduction of the drive mechanism, once it is removed from the switch, in a single position, and that will correspond to the one that has this latest.
  • the system is complemented by security means to prevent undue manipulation by third parties on the switch itself, and whose safety means are constituted from a trapdoor (11) that is mounted slidingly on the housing itself (1) , said trapdoor (11) having a hole (12) capable of facing the hole or passage (6) of the flange (5), allowing the coupling of the drive mechanism, as well as access to the axis of the switch, while that if that trapdoor (11) is moved and a gap between the orifice (12) and the passage (6) of the flange (5) is carried out, then the orifice of access to the axis of the switch is blocked, thereby avoiding third party manipulation.
  • This position can be locked by a padlock or similar item that is introduced through a hole or window (13) provided for this purpose in the housing itself (1) and whose lock will logically prevent the sliding of the trapdoor (11) from the position of the switch lock, to the position that allows the coupling of the drive mechanism

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Keying Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

L'invention concerne un système conçu pour être utilisé dans les situations où le mécanisme de commande d'un appareil de manoeuvre, tel qu'un interrupteur-sectionneur de moyenne tension, est indépendant par rapport à l'interrupteur-sectionneur et peut être retiré pour être remplacé ou réparé ou pour l'entretien de l'ensemble. Ce système se caractérise en ce qu'il comprend un élément de couplage intermédiaire disposé entre l'axe de l'interrupteur et le mécanisme de commande, restant couplé à l'axe de l'interrupteur lorsque le mécanisme de commande est retiré. Cet élément intermédiaire se compose d'une bride (5) à laquelle sont associés une pluralité de cylindres (8) retenus dans des logements semi-cylindriques (7) par l'intermédiaire d'un élément élastique (9). Cet ensemble permet de bloquer les différentes positions de l'interrupteur-sectionneur lorsque l'on retire le mécanisme de commande, afin que, lorsque l'on remet le mécanisme de commande en place, la mise en place se fasse conformément à la position de l'interrupteur.
PCT/ES2002/000144 2001-03-30 2002-03-21 Systeme de blocage des differentes positions d'un interrupteur-sectionneur de mise a la terre dans des cellules de moyenne tension WO2002080209A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0204828-0A BR0204828A (pt) 2001-03-30 2002-03-21 Sistema para o travamento das posições de um interruptor-isolador de uma ligação à terra em células de voltagem média

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200100750 2001-03-30
ES200100750A ES2178600B1 (es) 2001-03-30 2001-03-30 Sistema de bloqueo de las diferentes posiciones de un interruptor seccionador de puesta a tierra en celdas de media tension.

Publications (1)

Publication Number Publication Date
WO2002080209A1 true WO2002080209A1 (fr) 2002-10-10

Family

ID=8497280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2002/000144 WO2002080209A1 (fr) 2001-03-30 2002-03-21 Systeme de blocage des differentes positions d'un interrupteur-sectionneur de mise a la terre dans des cellules de moyenne tension

Country Status (4)

Country Link
CN (1) CN1462461A (fr)
BR (1) BR0204828A (fr)
ES (1) ES2178600B1 (fr)
WO (1) WO2002080209A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES486741A1 (es) * 1978-12-12 1980-06-16 Hazemeijer Bv Perfeccionamientos en los mecanismos de accionamiento y blo-queo,particularmente para su uso en una instalacion de in- terruptor de tension media
GB2208454A (en) * 1987-08-05 1989-03-30 Bicc Plc Electric switch locking device
GB2279810A (en) * 1993-07-03 1995-01-11 Kloeckner Moeller Gmbh A lockable rotary drive for a circuit breaker
ES2109766T3 (es) * 1994-11-04 1998-01-16 Kloeckner Moeller Gmbh Dispositivo de accionamiento manual bloqueable para conectar y desconectar aparatos electricos de maniobra blindados, en especial disyuntores de fuerza.
US5998743A (en) * 1996-01-30 1999-12-07 Kloeckner-Moeller Gmbh Locking-type actuator for a rotary switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES486741A1 (es) * 1978-12-12 1980-06-16 Hazemeijer Bv Perfeccionamientos en los mecanismos de accionamiento y blo-queo,particularmente para su uso en una instalacion de in- terruptor de tension media
GB2208454A (en) * 1987-08-05 1989-03-30 Bicc Plc Electric switch locking device
GB2279810A (en) * 1993-07-03 1995-01-11 Kloeckner Moeller Gmbh A lockable rotary drive for a circuit breaker
ES2109766T3 (es) * 1994-11-04 1998-01-16 Kloeckner Moeller Gmbh Dispositivo de accionamiento manual bloqueable para conectar y desconectar aparatos electricos de maniobra blindados, en especial disyuntores de fuerza.
US5998743A (en) * 1996-01-30 1999-12-07 Kloeckner-Moeller Gmbh Locking-type actuator for a rotary switch

Also Published As

Publication number Publication date
CN1462461A (zh) 2003-12-17
ES2178600A1 (es) 2002-12-16
BR0204828A (pt) 2003-07-01
ES2178600B1 (es) 2004-08-01

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