WO2002080209A1 - System for blocking different positions of a ground-connected load-breaking switch in medium-voltage cells - Google Patents

System for blocking different positions of a ground-connected load-breaking switch in medium-voltage cells 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
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WO
WIPO (PCT)
Prior art keywords
switch
flange
drive mechanism
disconnector
positions
Prior art date
Application number
PCT/ES2002/000144
Other languages
Spanish (es)
French (fr)
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/en
Publication of WO2002080209A1 publication Critical patent/WO2002080209A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—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

The invention relates to a system that is intended to be used when the control mechanism of an operating apparatus, such as a medium-voltage load-breaking switch, is independent of the actual load-breaking switch and can be removed in order to be replaced, repaired or for maintenance work to be carried out on the assembly. The inventive system is characterised in that it comprises an intermediate coupling element between the switch axle and the control mechanism and said intermediate element remains coupled to the switch axle when the control mechanism is removed. The aforementioned intermediate element comprises a flange (5) to which are associated numerous cylinders (8) which are held in semi-cylindrical housings (7) by means of an elastic element (9). In this way, said assembly can be used to block the different positions of the load-breaking switch when the control mechanism is removed, so that, when the control mechanism is returned, it is coupled correctly in accordance with the position of the switch.

Description

SISTEMA DE BLOQUEO DE LAS DIFERENTES POSICIONES DE UN INTERRUPTOR SECCIONADOR DE PUESTA A TIERRA EN CELDAS DE LOCKING SYSTEM OF THE DIFFERENT POSITIONS OF A GROUNDING SECTION SWITCH ON CELLS OF
MEDIA TENSIÓNMEDIUM VOLTAGE
D E S C R I P C I Ó ND E S C R I P C I Ó N
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a un sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra, en celdas de media tensión que está previsto para mantener la posición operativa del interruptor cuando se extrae el respectivo mecanismo de accionamiento, en caso de llevar a cabo una reparación, sustitución y/o mantenimiento del mismo, evitando así tener que cortar la tensión de la celda durante estas operaciones .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.
El sistema tiene por objeto también evitar que terceras personas puedan manipular indebidamente el interruptor-seccionador, así como impedir que éste pueda cambiar accidentalmente su posición, por ejemplo ante un cortocircuito .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.
Es también objeto de la invención proporcionar unos medios para la identificación inequívoca de la posición operativa del interruptor-seccionador cuando se extrae el mecanismo de accionamiento correspondiente, de tal forma que cuando se vuelva a montar este mecanismo se de una correspondencia entre la posición operativa del interruptor y la posición del mecanismo de accionamiento.It is also the object of the invention to provide means for the unequivocal identification of the operating position of the switch-disconnector when the corresponding actuator mechanism is removed, such that when this mechanism is reassembled, a correspondence between the operational position of the switch and drive mechanism position.
ANTECEDENTES DE LA INVENCIÓN Cuando el mecanismo de accionamiento de un aparato de maniobra, como por ejemplo puede ser un interruptor- seccionador, en una celda de media tensión, esté basado en un dispositivo independiente del propio interruptor- seccionador, existe la posibilidad de extraer ese mecanismo de accionamiento para realizar operaciones de mantenimiento, tales como sustitución y reparación, pero esta operación requiere generalmente tener que cortar la corriente durante la operación, con la consiguiente pérdida de operatividad en la instalación.BACKGROUND OF THE INVENTION When the actuation mechanism of a maneuvering device, such as a switch-disconnector, in a medium voltage cell, is based on a device independent of the switch-disconnector itself, there is the possibility of extracting that actuating mechanism for perform maintenance operations, such as replacement and repair, but this operation generally requires having to cut off the power during operation, with the consequent loss of operability in the installation.
Además, una vez retirado el mando de accionamiento, el interruptor queda libre de toda retención, de tal manera que en determinadas circunstancias, por ejemplo ante un cortocircuito, el interruptor puede sufrir un esfuerzo suficientemente grande como para hacer girar su eje, cambiando la posición operativa del mismo ya que el único elemento de retención mecánica lo constituye precisamente el mecanismo de accionamiento que se ha retirado. En esta situación se corre además el riesgo de que en la posterior incorporación del mecanismo de accionamiento éste se posicione sobre el interruptor de forma incorrecta, con el riesgo evidente de que las posteriores operaciones sean también incorrectas, es decir, el interruptor puede estar en una posición, por ejemplo abierto, mientras que el mando de accionamiento que se conecta puede estar cerrado, con lo que al actuar sobre los mandos de accionamiento se produciría el efecto contrario al esperado, con los consiguientes riesgos.In addition, once the drive control is removed, 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. In this situation, there is also a risk that in the subsequent incorporation of the drive mechanism it is positioned incorrectly on the switch, with the obvious risk that subsequent operations are also incorrect, that is, 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.
Actualmente, la separación o extracción del mecanismo de accionamiento respecto de un interruptor puede realizarse de muy diversas maneras, entre las que cabe citar las siguientes: Sistemas que requieren de una operación previa que motiva tener que dejar fuera de servicio la red.Currently, the separation or removal of the drive mechanism from a switch can be done in many different ways, including the following: Systems that require a previous operation that motivates having to leave the network out of service.
- Sistemas que permiten una extracción del mecanismo de accionamiento, pero requieren elevada destreza y conocimientos del operario.- Systems that allow an extraction of the drive mechanism, but require high skill and knowledge of the operator.
Sistemas que, ante la extracción del mecanismo de accionamiento, no garantizan la posición del interruptor-seccionador de puesta a tierra.Systems that, when removing the drive mechanism, do not guarantee the position of the earthing switch-disconnector.
Sistemas que requieren bloqueo previo a la extracción del mecanismo de accionamiento, con dependencia directa del operario que realiza la extracción del mismo.Systems that require blocking prior to the extraction of the drive mechanism, with direct dependence on the operator who performs the extraction thereof.
En todos estos casos, el interruptor separado del mecanismo de accionamiento pierde o ve disminuida la capacidad de resistir esfuerzos electrodinámicos elevados, debidos a faltas en la red, lo que puede cambiar la posición operativa del interruptor pero además posibilita que al volver a acoplar el mecanismo de accionamiento, éste quede en una posición distinta a la que presenta el interruptor, con los consiguientes riesgos como se ha indicado.In all these cases, 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.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
El sistema que se preconiza ha sido concebido para resolver la problemática anteriormente expuesta, en base a una solución sencilla pero no por ello menos eficaz.The system that has been recommended has been conceived to solve the problem described above, based on a simple solution but no less efficient.
Concretamente, el sistema de bloqueo se basa en la incorporación de un elemento intermedio de conexión entre el eje del interruptor y el mecanismo de accionamiento, de manera que cuando se retira o extrae éste último el elemento intermedio queda acoplado sobre el eje del interruptor y sobre la pared externa de la celda o módulo de media tensión, sin tener que desconectar la celda y actuando como elemento de bloqueo que permite garantizar el mantenimiento de la posición operativa del interruptor.Specifically, 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.
El aludido elemento intermedio comprende una brida a la que están asociados una pluralidad de cilindros regularmente repartidos en concavidades cilindricas previstas al efecto en la periferia de aquella, cilindros que están obligados a permanecer en sus posiciones mediante un elemento elástico que los abraza. De esta manera, cuando el mecanismo de accionamiento realiza un giro, obliga a los cilindros a desbloquear la brida de unión, dejándola libre de movimiento durante la operación que se está ejecutando, de manera tal que cuando dicho mecanismo de accionamiento alcanza la posición final la brida se bloquea de nuevo, bloqueando a su vez el eje del interruptor-seccionador de puesta a tierra.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. In this way, when 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.
Los cilindros situados sobre las concavidades periféricas de la brida, quedan a su vez ubicados en espacios libres establecidos entre una serie de tabiques perimetrales de la carcasa principal, todo ello de manera tal que si con el mecanismo de accionamiento referido se produce un esfuerzo sobre el interruptor que tienda a hacer girar el eje del mismo, éste se encontrará impedido en su movimiento por efecto de los cilindros que están encajados a presión en sus respectivos alojamientos por efecto del resorte elástico, mientras que cuando se actúa sobre el mecanismo de accionamiento para cambiar la posición del interruptor, éste actúa sobre la brida con una fuerza suficiente para producir la extensión del elemento elástico haciendo que los cilindros se desplacen en sentido radial hasta quedar libres de sus alojamientos, permitiendo así el giro de la brida, todo ello de manera que tras alcanzar el interruptor la nueva posición operativa, la brida habrá quedado desplazada angularmente respecto de su posición inicial y los cilindros, por acción del resorte, habrán quedado alojados en las concavidades semicirculares más próximas a su nueva posición, bloqueando nuevamente la posición del interruptor frente a movimientos accidentales.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.
También se ha previsto como novedad de la invención el hecho de que el paso central establecido en la brida para el extremo del eje del interruptor, cuente con un resalte en base al cual solamente es posible introducir el mecanismo de accionamiento en una posición concreta, con lo que el mando de accionamiento una vez retirado únicamente admite ser colocado en la posición correcta que corresponderá a la que tiene el interruptor.It is also provided as a novelty of the invention that 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.
Otra característica de novedad del sistema de la invención se centra en unos medios de seguridad para impedir manipulaciones indebidas sobre el interruptor, y cuyos medios estarán constituidos por una simple trampilla deslizante respecto a la carcasa general del conjunto, trampilla que está afectada de un orificio circular susceptible de enfrentarse respecto del orifico de la brida, permitiendo el acoplamiento del mando de accionamiento, así como el acceso al eje del interruptor, mientras que si se desplaza la trampilla su orificio queda desfasado respecto del de la brida y por lo tanto el eje del interruptor no está accesible, posición ésta que puede bloquearse mediante un candado que se introduce a través de un orificio de la propia carcasa para impedir el deslizamiento de la trampilla, desde la posición de bloqueo del interruptor hasta la posición que permite el acoplamiento del mecanismo de accionamiento.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.
En el sistema descrito, la carcasa general del conjunto y la correspondiente trampilla deslizante, constituyen un sistema estático en el que se encuentran los componentes encargados de la protección y aislamiento del resto de componentes que constituyen un sistema de dinámico del conjunto, siendo éstos componentes la brida, los cilindros y el elemento elástico que constituyen el propio sistema dinámico en su conjunto.In the described system, 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.
Entre las ventajas y características de prestaciones que proporciona el sistema referido, pueden citarse las siguientes:Among the advantages and performance characteristics provided by the referred system, the following can be mentioned:
Realiza las funciones de bloqueo de las distintas posiciones del interruptor- seccionador, permitiendo la extracción del mecanismo de accionamiento en cualquiera de las posiciones de aquel, sin reducción de las propiedades ante esfuerzos electrodinámicos y conservando siempre la posición del propio interruptor-seccionador .It performs the functions of blocking the different positions of the switch-disconnector, allowing the extraction of the drive mechanism in any of its positions, without reducing the properties of electrodynamic forces and always maintaining the position of the switch-disconnector itself.
- Bloquea al interruptor- seccionador para evitar una manipulación accidental por parte de terceras personas, basado ese bloqueo en la trampilla con el candado de fijación de la misma .- Locks the switch-disconnector to prevent accidental manipulation by third parties, based on that lock on the trapdoor with its lock.
Consigue que el interruptor-seccionador de puesta a tierra y el mecanismo de accionamiento, puedan ser acoplables en una posición única entre ambos . DESCRIPCIÓN DE LOS DIBUJOSIt ensures that the earthing switch-disconnector and the drive mechanism can be coupled in a unique position between the two. DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. In an illustrative and non-limiting manner, the following has been represented:
La figuras 1 y 2. - Muestran sendas perspectivas en explosión del conjunto que forma el sistema de bloqueo objeto de la invención, en un caso correspondiente a una vista en perspectiva superior y en otro caso a una vista en perspectiva inferior.Figures 1 and 2. - They 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.
La figuras 3 y 4. - Muestran otras dos vistas en perspectiva como la de las figuras anteriores, pero en este caso con el sistema en situación de total acoplamiento o montaje de sus componentes.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.
REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION
Como se puede ver en las figuras referidas, el sistema de la invención, previsto para determinar un medio de bloqueo de un interruptor-seccionador de puesta a tierra, cuando se extrae el correspondiente mando o mecanismo de accionamiento, se basa en la incorporación de un elemento intermedio de unión o conexión entre el eje del interruptor y el aludido mecanismo de accionamiento, quedando dicho elemento intermedio, cuando se retira el mecanismo, acoplado entre el aludido eje del interruptor y sobre la pared externa de la celda o módulo de media tensión. El elemento intermedio en cuestión se constituye a partir de una carcasas general (1) con un paso central (2) y una serie de tabiques (3) periféricos a ese paso (2) , cuyos tabiques (3) presentan una separación que da lugar a otros tantos espacios o alojamientos (4) cuya función se expondrá con posterioridad.As can be seen in the aforementioned figures, 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.
En el orificio o paso (2) de la carcasa (1) se monta una brida (5) con un orificio (6) para el acoplamiento del correspondiente eje del interruptor- seccionador, contando esa brida (5) con una valona o base (5') afectada de una pluralidad de concavidades semicilíndricas (7) regularmente distribuidas en toda la periferia de esa valona (5) , previstas las concavidades (7) para el posicionado de otros tantos cilindros (8) que quedan obligados a permanecer en sus posiciones por medio de un elemento elástico (9) , quedando a su vez esos cilindros (8) ubicados en los espacios (4) establecidos por los tabiques (3) de la carcasa (1) .In the hole or passage (2) of the housing (1) 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).
En el orificio (6) de la brida (5) se ha previsto un resalte (10) que permite la introducción del mecanismo de accionamiento, una vez retirado éste respecto del interruptor, en una única posición, y que corresponderá a la que tiene éste último.In the hole (6) of the flange (5) 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.
De este modo, cuando el mecanismo de accionamiento realiza un giro obliga a los cilindros (8) a desbloquear la brida (5), dejándola libre de movimiento mientras la operación se esté ejecutando. Cuando se alcanza la posición final en ese giro del mecanismo de accionamiento, la bridaThus, when the drive mechanism makes a rotation, it forces the cylinders (8) to unlock the flange (5), leaving it free of movement while the operation is being executed. When the final position in that rotation of the drive mechanism is reached, the flange
(5) se bloquea de nuevo, bloqueando a su vez el eje del interruptor-seccionador de puesta a tierra, bloqueos que disponen de capacidad propia para poder resistir los esfuerzos electrodinámicos que se puedan dar en la red. En concreto, cuando se produce un esfuerzo sobre el interruptor que tienda a hacer girar el eje del mismo, éste se encontrará impedido en su movimiento por efecto de los cilindros (8) que están encajados a presión en sus respectivos alojamientos (7) por efecto del resorte elástico (9) , mientras que cuando se actúa sobre el mecanismo de accionamiento para cambiar la posición del interruptor, éste actúa sobre la brida (5) con una fuerza suficiente para producir la extensión del elemento elástico (9) , haciendo que los cilindros (8) se desplacen en sentido radial hasta quedar libres de sus alojamientos (7), permitiendo así el giro de la brida, todo ello de manera que tras alcanzar el interruptor la nueva posición operativa, la brida (5) habrá quedado desplazada angularmente respecto de su posición inicial y los cilindros (8), por acción del resorte, habrán quedado alojados en las concavidades semicirculares (7) más próximas a sus nuevas posiciones, bloqueando nuevamente la posición del interruptor frente a movimientos accidentales.(5) it is blocked again, blocking in turn the axis of the earthing switch-disconnector, locks that have their own capacity to resist the electrodynamic stresses that may occur in the network. In particular, when there is an effort on the switch that tends to rotate its axis, it will be impeded in its movement by the effect of the cylinders (8) that are snapped into their respective housings (7) by effect of the elastic spring (9), while when acting on the drive mechanism to change the position of the switch, it acts on the flange (5) with sufficient force to produce the extension of the elastic element (9), causing the cylinders (8) move radially until they are free of their housings (7), thus allowing the rotation of the flange, all so that after reaching the switch the new operating position, the flange (5) will have been displaced angularly with respect to their initial position and the cylinders (8), by action of the spring, they will have been housed in the semicircular concavities (7) closest to their new positions, blocking again e the position of the switch against accidental movements.
El sistema se complementa con unos medios de seguridad para impedir manipulaciones indebidas por parte de terceros sobre el propio interruptor, y cuyos medios de seguridad están constituidos a partir de una trampilla (11) que va montada con carácter deslizante sobre la propia carcasa (1) , estando dicha trampilla (11) dotada de un orificio (12) susceptible de enfrentarse con el orificio o paso (6) de la brida (5) , permitiendo el acoplamiento del mecanismo de accionamiento, así como el acceso al eje del interruptor, mientras que si se desplaza esa trampilla (11) y se lleva a cabo un desfase entre el orifico (12) y el paso (6) de la brida (5), entonces queda obturado el orifico de acceso al eje del interruptor, evitando con ello la manipulación por parte de terceros. Esta posición puede bloquearse mediante un candado o elemento similar que se introduce a través de un orificio o ventana (13) prevista al efecto en la propia carcasa (1) y cuyo candado lógicamente impedirá el deslizamiento de la trampilla (11) desde la posición de bloqueo del interruptor, hasta la posición que permite el acoplamiento del mecanismo de accionamiento . 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

Claims

R E I V I N D I C A C I O N E SR E I V I N D I C A C I O N E S
Ia.- Sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra en celdas de media tensión que se caracteriza por la incorporación de un elemento intermedio de conexión (5) entre el eje del interruptor y el mecanismo de accionamiento, elemento de conexión intermedio (5) que queda acoplado sobre el eje del interruptor cuando se retira dicho mecanismo de accionamiento, actuando como elemento de bloqueo que mantiene la posición operativa del propio interruptor.I to .- locking system the positions of a switch-disconnector earthed in medium voltage switchgear characterized by the incorporation of an intermediate connecting member (5) between the axis of the switch and the drive mechanism, intermediate connection element (5) that is coupled on the axis of the switch when said drive mechanism is removed, acting as a blocking element that maintains the operational position of the switch itself.
2a.- Sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra en celdas de media tensión, según reivindicación Ia, caracterizado porque el elemento intermedio (5) está constituido por una brida con una valona (5') afectada de concavidades semicilíndricas (7) en su periferia, en las que se posicionan otros tantos cilindros (8) , los cuales quedan conjuntamente englobados por un elemento elástico y envolvente (9) que obliga a dichos cilindros a permanecer en su posición, bloqueando la posición operativa del interruptor seccionador.2 .- locking system the positions of a switch-disconnector earthed in medium voltage switchgear according to claim Ia, wherein the intermediate element (5) consists of a flange with a flange (5 ') affected by semi-cylindrical concavities (7) in its periphery, in which many other cylinders (8) are positioned, which are jointly encompassed by an elastic and enveloping element (9) that forces said cylinders to remain in position, blocking the operating position of the disconnecting switch.
3a.- Sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra en celdas de media tensión según reivindicaciones anteriores, caracterizado porque la brida (5) con los cilindros (8) va montada en un paso (2) establecido al efecto en la correspondiente carcasa (1) , la cual cuenta con una serie de tabiques (3) entre los que se determinan espacios o huecos (4) para el posicionado de los cilindros (8) .3 .- locking system positions a grounding in medium voltage switchgear according to previous claims, characterized break switch that the flange (5) with the cylinder (8) is mounted in a step (2) established for this purpose in the corresponding housing (1), which has a series of partitions (3) between which spaces or gaps (4) are determined for the positioning of the cylinders (8).
4a.- Sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra en celdas de media tensión, según reivindicaciones anteriores, caracterizado porque el paso central (6) de la brida (5) para el alojamiento del eje del interruptor, cuenta con un resalte (10) que permite la introducción del mecanismo de accionamiento en una sola posición de éste respecto al interruptor.4 .- locking system positions a switch-disconnector earthing cells medium voltage, according to previous claims, characterized in that the central passage (6) of the flange (5) for the housing of the switch shaft, has a shoulder (10) that allows the introduction of the drive mechanism in a single position of the latter Regarding the switch.
5a.- Sistema de bloqueo de las posiciones de un interruptor-seccionador de puesta a tierra en celdas de media tensión, caracterizado porque sobre la carcasa (1) va montada una trampilla deslizante (11) con un orificio (12) susceptible de enfrentarse al paso (6) de la brida, para permitir el acoplamiento del mecanismo de accionamiento o bien posicionarse desfasadamente respecto del aludido paso (6) de la brida (5), para determinar una posición de condena que impide el acceso al eje del interruptor, previéndose medios de bloqueo de tal trampilla (11) , tales como un candado ubicado en una ventana (13) establecida al efecto en la propia carcasa (1) . 5 .- locking system the positions of a switch-disconnector earthed at medium voltage, characterized in that on the housing (1) is mounted a sliding flap (11) with a hole (12) capable of facing to the passage (6) of the flange, to allow the coupling of the drive mechanism or to be positioned out of position with respect to the aforementioned step (6) of the flange (5), to determine a condemnation position that prevents access to the switch shaft, provided means for locking such a hatch (11), such as a padlock located in a window (13) established for this purpose in the housing itself (1).
PCT/ES2002/000144 2001-03-30 2002-03-21 System for blocking different positions of a ground-connected load-breaking switch in medium-voltage cells WO2002080209A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0204828-0A BR0204828A (en) 2001-03-30 2002-03-21 System for locking the positions of a medium voltage cell earth isolating switch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200100750 2001-03-30
ES200100750A ES2178600B1 (en) 2001-03-30 2001-03-30 LOCKING SYSTEM OF THE DIFFERENT POSITIONS OF A GROUNDING SECTIONING SWITCH IN HIGH VOLTAGE CELLS.

Publications (1)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2002/000144 WO2002080209A1 (en) 2001-03-30 2002-03-21 System for blocking different positions of a ground-connected load-breaking switch in medium-voltage cells

Country Status (4)

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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES486741A1 (en) * 1978-12-12 1980-06-16 Hazemeijer Bv An actuating and locking device for a switching installation
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 (en) * 1994-11-04 1998-01-16 Kloeckner Moeller Gmbh LOCKABLE MANUAL ACTUATION DEVICE FOR CONNECTING AND DISCONNECTING SHIELDED ELECTRONIC MANEUVER DEVICES, ESPECIALLY FORCE BREAKERS.
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 (en) * 1978-12-12 1980-06-16 Hazemeijer Bv An actuating and locking device for a switching installation
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 (en) * 1994-11-04 1998-01-16 Kloeckner Moeller Gmbh LOCKABLE MANUAL ACTUATION DEVICE FOR CONNECTING AND DISCONNECTING SHIELDED ELECTRONIC MANEUVER DEVICES, ESPECIALLY FORCE BREAKERS.
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
ES2178600A1 (en) 2002-12-16
BR0204828A (en) 2003-07-01
CN1462461A (en) 2003-12-17
ES2178600B1 (en) 2004-08-01

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