EP3159907B1 - Cam circuit breaker for medium and high voltages - Google Patents
Cam circuit breaker for medium and high voltages Download PDFInfo
- Publication number
- EP3159907B1 EP3159907B1 EP15290266.4A EP15290266A EP3159907B1 EP 3159907 B1 EP3159907 B1 EP 3159907B1 EP 15290266 A EP15290266 A EP 15290266A EP 3159907 B1 EP3159907 B1 EP 3159907B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical connector
- cam
- rotation
- premier
- circuit breaker
- 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.)
- Not-in-force
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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
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
Definitions
- the present invention relates to a cam circuit breaker adapted to medium and high voltages according to the preamble of claim 1.
- a function of circuit breaker or disconnector installations, in particular at high voltage, for example as gis (gas insulted switchgear) or AIS (air insulated switchgear) type metal enclosures, is to be able to connect, but above all disconnect elements of electrical connection, such as a dedicated male electrical connector to be inserted into or removed from a female electrical connector.
- a circuit breaker capable of mechanically connecting or disconnecting said connectors in the field of high voltage.
- FIG. figure 1 the operation of a circuit breaker known to those skilled in the art is illustrated in FIG. figure 1 and will assist in understanding the present invention.
- the single-track cam circuit breaker is shown in closed connection mode in Figure 1A that is, the first male electrical connector 6 'is inserted into the second female electrical connector 7' to create an arc contact and the second male electrical connector 7 is inserted into the first female electrical connector 6 to create a main electrical contact.
- the slider 8 is at one end of the curvilinear track 9 which is furthest from the axis 2 and the moment of force M 0 exercisable by the first lever arm 4 by pulling on the point rotating coupling means 3 'has a first minimum value.
- the single-track cam 3 is positioned so as to have said spot rotating coupling means 3 'located at its furthest position from the first female electrical connector 6, whereas inversely the slider 8 is located at most near said first female electrical connector 6.
- the Figure 1B present said circuit breaker in an intermediate open connection mode (or closed connection) located between the closed connection mode and the open connection mode, i.e. when the moment of force Mo exerted by the end of the first arm 4 on the single-track cam 3 has a value within a range of maximum values between said first minimum value and a second minimum value and thus allows the single-track cam 3 to pivot under a high driving torque, said torque being exerted by the force Fr of traction exerted on the rotary coupling means 3 ', driving at the same time the slider 8 in displacement along the curvilinear track 9 so that the latter approaches the pivot axis 2 and at the same time causes the first male electrical connector 6 'out of said second female electrical connector 7' by actuation of said second arm 5.
- an intermediate open connection mode or closed connection
- the circuit breaker is configured so that the disconnect complete isation of the first female electrical connector 6 of the second male electrical connector 7 occurs before the complete disengagement of the first male electrical connector 6 'of the second female electrical connector 7', so that the latter creates a rupture of contact under electric arc channelized by said nozzle 10.
- the slider 8 is configured to slide in the curvilinear track 9 whose rounded curvilinear geometry or "L" round is adapted to minimize frictional forces of the slider with edges of said track.
- the figure 1C shows the breaker in open connection mode, in which the male and female connectors are all separated from each other, their separation being due to their mechanical interaction via the mono-track cam 3.
- the moment of force Mo exerrable by the end first arm 4 on the single-track cam is then equal to said second minimum value and the slider 8 reaches a final position at the other end of the curvilinear track 9, said other end being closest to the pivot axis 2.
- the circuit breaker described in figure 1 suffers from the following disadvantages: the ratio between, on the one hand, the disconnection speed of the second male electrical connector 7 and the first female electrical connector 6, and, on the other hand, the disconnection speed of the first male electrical connector 6 'and the second female electrical connector 7 'is approximately 1. This ratio close to 1 for the above-mentioned disconnection rates increases the arc-breaking time and therefore decreases the protective function of the circuit-breaker, which consequently takes longer to interrupt an electric current. incidents. Furthermore, a cam circuit breaker according to the preamble of claim 1 is known from the document DE 10 2013 200918 A1 .
- An object of the present invention is to provide an effective circuit breaker allowing a ratio of the aforementioned disconnection speeds as high as possible, for example close to 2, in particular for a high voltage application, for example in the case of a circuit breaker or disconnector GIS-type metal casing post. Another object is to provide a circuit breaker requiring a small number of mechanical parts to optimize the masses of moving elements, and thus the disconnection rates.
- the present invention provides a cam circuit breaker comprising a single cam coupled to both a first electrical connector acting as a main contact and a first other electrical connector acting as an arcing contact to simultaneously move them at different speeds. thus making it possible to obtain different travel distances or distances as a function of time for said first electrical connector and said first other electrical connector, and to delay the contact break between firstly the first electrical connector and a second electrical connector also acting as the main contact, and the first other electrical connector and a second other electrical connector also acting as an arc contact, the connectors acting as arc contact last breaking their connection when opening the circuit breaker.
- the circuit breaker according to the invention is particularly suitable for medium and high voltages, and is in particular intended to supply electrical current to an electrical device, said circuit breaker being said to be "open”, or also “in open connection mode", when interrupts or cuts the current supplying said electrical device, and "closed”, or also “in closed connection mode” when it allows the power supply of said electrical device.
- FIGS. 1A-1C illustrate the operation of a circuit breaker of the prior art as previously described, said circuit breaker being in a closed connection mode ( Fig. 1A ), then intermediate ( Fig. 1B ) and finally open ( Fig. 1 C ).
- the present invention thus proposes to use a single cam 3 in order to create different displacement velocities as a function of time and optionally non-constant, for the first electrical connector 6 and the first other electrical connector 6 'when they are close to the base 1, and therefore move away from the moving part.
- the cam 3 according to the invention is a dual-track cam comprising a first track 9 serving to drive in motion the first other electrical connector 6 'and a second track 9' for driving in movement said first electrical connector 6, in such a way that the first other electrical connector 6 'and the first electrical connector 6 are driven in motion at different speeds as a function of time, for example by using different radii of curvature for the first and second tracks, said radii of curvature being measured with respect to the pivot axis 2, and varying for example between one end and the other for each of said first and second tracks.
- the first track 9 may comprise a first section characterized by a substantially constant radius and a second section characterized by a continually increasing radius until reaching a maximum value and the second track 9 'may comprise a first section characterized by a radius continuously decreasing to a minimum value and a second section characterized by a constant radius equal to said minimum value, a radius being generally defined for the first or second track as being the distance between a position at the center of the track according to its width and the pivot axis 2.
- a rotation of the cam 3 drives first moving the first electrical connector 6, then the first other electrical connector 6 'during a rotation of said cam 3 according to said first direction of rotation.
- the distance between each central position of said first track 9 according to its width (ie the middle of the first track according to its width) and the pivot axis 2, as well as the distance between each position. center of the second track 9 'according to its width (ie the middle of the second track according to its width) and the pivot axis 2 vary between one end and the other for each of said first and second tracks so that, during the rotation of said cam 3, the distance between the second slider 8 'and the pivot axis 2 and the distance between the first slider 8 and the pivot axis 2 as a function of an angle of rotation of said cam 3 are different and therefore generate different speeds of movement for said first electrical connector and first other electrical connector during the rotation of the cam 3.
- Said speeds of displacement at a time t, measurable for said first er electrical connector and first other electrical connector and resulting from the sliding of the first and second slider in respectively the first and second track during the rotation of the cam 3, are in particular different, and preferably not constant, for a sliding of the first and / or or respectively second slider in one or more of said sections of the first, respectively second, track.
- first track 9 and the second track 9 'are different and not centrally symmetrical with respect to the axis of pivot 2 makes it possible to obtain different strokes or displacements for the first and first other electrical connector as a function of time, ie as a function of an angle of rotation of the cam 3 over time.
- the drive of the first electrical connector 6 and the first other electrical connector 6 'by mechanical coupling to said cam 3 by respectively the first slider 8 configured to move along the first track 9 and the second slider 8' configured to move along the second track during the rotation of the cam 3 provides a displacement of the first other electrical connector 6 'towards the base 1 and as a function of time which is greater than the displacement of the first electrical connector 6 towards the base 1 for the same time.
- the figure 9 indeed has the displacement A of the first other electrical connector 6 'and the displacement B of the first electrical connector 6 as a function of the displacement C of the second electrical connector 7 and the time to switch from the closed connection mode to the open connection mode, said time to switch from closed connection mode to open connection mode being normalized to a unit of time.
- the curves thus represented are a percentage value of displacement of the second electrical connector as a function of a unit of time between 0 and 1.
- the displacements A and B are represented in percent of the displacement C.
- the names of the figures 2 , 4-8 has been inserted into the graph to show to when these figures represent the circuit breaker according to the invention during its passage of the closed connection mode represented by the figure 2 to the open connection mode represented by the figure 8 .
- the differences in displacements of the first electrical connector 6 and the first other electrical connector 6 'as observed in FIG. Fig. 9 result in particular from the shape of the first and second track each imposing for the same angular variation or rotation angle of the cam 3 a different displacement length of the first electrical connector 6 and the first other electrical connector 6 ', said displacement length imposed by the rotation of the cam 3 being a function of the distance between the slider (first slider for the first other electrical connector and respectively second slider for the first electrical connector) to the pivot axis 2 as a function of time, this distance being imposed by the curvilinear shape of the track, respectively first track for the first slider and second track for the second slider.
- the first slider 8 is therefore at a first end of the first track 9 and the second slider 8 'is at a first end of the second track 9', the first slider 8 being in particular further away from the base 1 than the second slider 8 ', but closer to the pivot axis 2 than said second slider 8'.
- the figures 2 , 4 and 5 show in chronological order the progressive disconnection of the first electrical connector 6 and the second electrical connector 7 by moving away from the second electrical connector 7 of the base 1. This distance drives the cam 3 in rotation according to said first direction of rotation by coupling said second electrical connector 7 with said cam 3, in particular by coupling of a nozzle fastener integral with a nozzle for channeling a current arc that can be generated during the separation of the first other electrical connector 6 'and the second other electrical connector 7 ', said nozzle 10 being itself secured to said second electrical connector 7.
- said first direction of rotation is the direction of rotation of the hands of a watch.
- the first track 9 and the second track 9 'of the cam 3 of the circuit breaker according to the invention and the coupling of said cam 3 with said first electrical connector 6 and said first other electrical connector 6' are configured to break the contact between the first electrical connector 6 and the second electrical connector 7 before breaking the contact between the first other electrical connector 6 'and the second other electrical connector 7'. In this way, any electric arc generated by the opening of the circuit breaker (ie its disconnection) can be channeled into said nozzle 10.
- the first track 9 is configured to allow an almost instantaneous removal of the first other electrical connector 6 'from the second other electrical connector 7' when the contact or connection between said first electrical connector 6 and said second electrical connector 7 has already been broken.
- This separation of the first other electrical connector 6 'and the second other electrical connector 7' creates a contact break under electric arc channeled by the nozzle 10.
- This almost instantaneous contact break is also illustrated in FIG. Fig. 9 by the displacement curve A. It is observed that the ratio between the displacement A of the first other electrical connector 6 'and the displacement B of the first electrical connector 6 takes at least a value greater than 2 over time.
- the second slider 8 ' is at a position closer to the pivot axis 2 compared to the position of the first slider 8.
- the figure 8 represents the circuit breaker according to the invention in open connection mode.
- the first and second electrical connectors respectively the first and second other electrical connector, are thus completely disengaged from each other.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
La présente invention concerne un disjoncteur à came adapté aux moyennes et hautes tensions selon le préambule de la revendication 1.The present invention relates to a cam circuit breaker adapted to medium and high voltages according to the preamble of claim 1.
Une fonction des installations de disjoncteur ou sectionneur, en particulier sous haute tension, par exemple comme des postes à enveloppe métallique de type GIS (gas insultated switchgear) ou AIS (air insulated switchgear), est de pouvoir connecter, mais surtout déconnecter des éléments de connexion électrique, tel qu'un connecteur électrique mâle dédié à être inséré dans ou retiré d'un connecteur électrique femelle. A ce titre, il est prévu un disjoncteur capable de connecter ou déconnecter mécaniquement lesdits connecteurs dans le domaine de la haute tension.A function of circuit breaker or disconnector installations, in particular at high voltage, for example as gis (gas insulted switchgear) or AIS (air insulated switchgear) type metal enclosures, is to be able to connect, but above all disconnect elements of electrical connection, such as a dedicated male electrical connector to be inserted into or removed from a female electrical connector. As such, there is provided a circuit breaker capable of mechanically connecting or disconnecting said connectors in the field of high voltage.
Particulièrement en mode de connexion ouverte, il est requis d'atteindre une ouverture rapide et fiable entre le connecteur mâle et le connecteur femelle. A ce titre, le fonctionnement d'un disjoncteur connu de l'homme du métier est illustré en
La
- une embase 1 de support comprenant un axe de
pivot 2 autour duquel la came mono-piste 3 est capable de pivoter, ladite embase de support 1 supportant un premier connecteur électrique femelle 6 (usuellement appelé contact principal) et un premier connecteur électrique mâle 6' (usuellement appelé contact d'arc), le premier connecteur électrique femelle 6 étant destiné à contacter électriquement un second connecteur électrique mâle 7 et le premier connecteur électrique mâle 6 étant destiné à contacter électriquement un second connecteur électrique femelle 7' lorsque le disjoncteur est en mode de connexion fermée; - un
premier bras 4 configuré pour entraîner en rotation la came mono-piste 3, leditpremier bras 4 ayant une extrémité couplée à la came mono-piste 3 par un moyen de couplage rotatif ponctuel 3' distinct de l'axe depivot 2 et l'autre extrémité couplée à unetuyère 10 solidaire du second connecteur électrique mâle 7 de façon à faire pivoter la came mono-piste 3 par rapport à l'embase autour de l'axe de pivot lors d'un retrait du second connecteur électrique mâle 7 hors du premier connecteur électrique femelle 6 pour réaliser le mode de connexion ouverte, ou inversement, lors de son insertion dans le premier connecteur électrique femelle 6 pour réaliser le mode de connexion fermée; - un
deuxième bras 5 configuré pour entraîner simultanément et à la même vitesse ledit premier connecteur électrique mâle 6' et ledit premier connecteur électrique femelle 6 selon un mouvement linéaire le long d'un axe longitudinal duditdeuxième bras 5, leditdeuxième bras 5 comprenant:- ∘ une première extrémité munie du premier connecteur électrique mâle 6' destiné à être inséré dans (en mode de connexion fermée) ou retiré du (en mode de connexion ouverte) second connecteur électrique femelle 7' ;
- ∘ une deuxième extrémité entrainée par pivotement de la came mono-
piste 3 au moyen d'un dispositif de couplage par coulissement, ledit dispositif de couplage comprenant uncoulisseau 8 solidaire de la deuxième extrémité dudeuxième bras 5 et coulissant dans une piste curviligne 9 de la came mono-piste 3 ; et - ∘ ledit
deuxième bras 5 étant couplé audit premier connecteur électrique femelle 6 de façon à être solidaire avec ce dernier afin d'entraîner simultanément et à la même vitesse le premier connecteur électrique femelle 6 et le premier connecteur électrique mâle 6.
- a support base 1 comprising a
pivot axis 2 around which the single-track cam 3 is able to pivot, said support base 1 supporting a first female electrical connector 6 (usually called the main contact) and a first male electrical connector 6 ' (usually called arc contact), the first connector female electrical 6 being intended to electrically contact a second maleelectrical connector 7 and the first maleelectrical connector 6 being adapted to electrically contact a second female electrical connector 7 'when the circuit breaker is in closed connection mode; - a
first arm 4 configured to rotate the single-track cam 3, saidfirst arm 4 having one end coupled to the single-track cam 3 by a spot rotating coupling means 3 'distinct from thepivot axis 2 and the other end coupled to anozzle 10 secured to the second maleelectrical connector 7 so as to rotate the single-track cam 3 relative to the base around the pivot axis upon removal of the second maleelectrical connector 7 out of the first femaleelectrical connector 6 to perform the open connection mode, or vice versa, when inserted into the first femaleelectrical connector 6 to achieve the closed connection mode; - a
second arm 5 configured to drive simultaneously and at the same speed said first male electrical connector 6 'and said first femaleelectrical connector 6 in a linear motion along a longitudinal axis of saidsecond arm 5, saidsecond arm 5 comprising:- A first end provided with the first male electrical connector 6 'intended to be inserted into (in closed connection mode) or removed from the (in open connection mode) second female electrical connector 7';
- A second end driven by pivoting of the single-
track cam 3 by means of a sliding coupling device, said coupling device comprising aslider 8 integral with the second end of thesecond arm 5 and sliding in acurvilinear track 9 of the single-track cam 3; and - Said
second arm 5 being coupled to said first femaleelectrical connector 6 so as to be integral with the latter so as to drive simultaneously and at the same speed the first femaleelectrical connector 6 and the first maleelectrical connector 6.
Le disjoncteur à came mono-piste est présenté en mode de connexion fermée en
La
La
En considérant les
Le disjoncteur décrit en
Considering the
The circuit breaker described in
Un but de la présente invention est de proposer un disjoncteur efficace permettant un rapport des vitesses de déconnexion susmentionnées le plus élevé possible, par exemple proche de 2, en particulier pour une application haute tension, par exemple dans le cas d'un disjoncteur ou sectionneur sous poste d'enveloppe métallique de type GIS. Un autre but est de proposer un disjoncteur requérant un faible nombre de pièces mécaniques permettant d'optimiser les masses des éléments en mouvement, et donc les vitesses de déconnexion.An object of the present invention is to provide an effective circuit breaker allowing a ratio of the aforementioned disconnection speeds as high as possible, for example close to 2, in particular for a high voltage application, for example in the case of a circuit breaker or disconnector GIS-type metal casing post. Another object is to provide a circuit breaker requiring a small number of mechanical parts to optimize the masses of moving elements, and thus the disconnection rates.
La présente invention propose un disjoncteur à came comprenant une unique came couplée à la fois à un premier connecteur électrique faisant office de contact principal et à un premier autre connecteur électrique faisant office de contact d'arc afin de les mouvoir simultanément à des vitesses différentes, permettant ainsi d'obtenir des courses ou distances de déplacement différentes en fonction du temps pour ledit premier connecteur électrique et ledit premier autre connecteur électrique, et permettant de différer la rupture de contact entre d'une part le premier connecteur électrique et un second connecteur électrique faisant également office de contact principal, et le premier autre connecteur électrique et un second autre connecteur électrique faisant également office de contact d'arc, les connecteurs faisant office de contact d'arc rompant en dernier leur connexion lors d'une ouverture du disjoncteur. Le disjoncteur selon l'invention est particulièrement adapté aux moyennes et hautes tensions, et est en particulier destiné à alimenter en courant électrique un dispositif électrique, ledit disjoncteur étant dit « ouvert », ou également « en mode de connexion ouverte », lorsqu'il interrompt ou coupe le courant alimentant ledit dispositif électrique, et « fermé », ou également « en mode de connexion fermée » lorsqu'il autorise l'alimentation en courant dudit dispositif électrique.The present invention provides a cam circuit breaker comprising a single cam coupled to both a first electrical connector acting as a main contact and a first other electrical connector acting as an arcing contact to simultaneously move them at different speeds. thus making it possible to obtain different travel distances or distances as a function of time for said first electrical connector and said first other electrical connector, and to delay the contact break between firstly the first electrical connector and a second electrical connector also acting as the main contact, and the first other electrical connector and a second other electrical connector also acting as an arc contact, the connectors acting as arc contact last breaking their connection when opening the circuit breaker. The circuit breaker according to the invention is particularly suitable for medium and high voltages, and is in particular intended to supply electrical current to an electrical device, said circuit breaker being said to be "open", or also "in open connection mode", when interrupts or cuts the current supplying said electrical device, and "closed", or also "in closed connection mode" when it allows the power supply of said electrical device.
L'invention concerne ainsi un disjoncteur à came comprenant :
- une came,
- une embase de support sur laquelle la came est montée rotative,
- un premier connecteur électrique et un premier autre connecteur électrique, ledit premier autre connecteur électrique étant entraînable en mouvement par rapport à ladite embase par rotation de la came,
- un second connecteur électrique connectable électriquement au premier connecteur électrique et un second autre connecteur électrique connectable électriquement audit premier autre connecteur électrique, ledit second connecteur électrique et ledit second autre connecteur électrique étant notamment solidaires l'un de l'autre,
- un couplage mécanique dudit second connecteur électrique à ladite came pour entraîner cette dernière en rotation lors de l'ouverture ou fermeture du disjoncteur,
- ladite came est configurée pour entrainer en mouvement ledit premier connecteur électrique et ledit premier autre connecteur électrique à des vitesses différentes, en particulier au moins lors d'une perte de contact ou d'une mise en contact dudit premier autre connecteur électrique et dudit second autre connecteur électrique. Préférentiellement, ledit premier connecteur électrique est entraînable en mouvement par rapport à ladite embase par rotation de la came de manière désynchronisée par rapport audit premier autre connecteur électrique.
- a cam,
- a support base on which the cam is rotatably mounted,
- a first electrical connector and a first other electrical connector, said first other electrical connector being drivable in motion relative to said base by rotation of the cam,
- a second electrical connector electrically connectable to the first electrical connector and a second other electrical connector electrically connectable to said first other electrical connector, said second electrical connector and said second other electrical connector being in particular integral with each other,
- a mechanical coupling of said second electrical connector to said cam to drive the latter in rotation when opening or closing the circuit breaker,
- said cam is configured to move said first electrical connector and said first other electrical connector in motion at different speeds, particularly at least upon loss of contact or contacting said first and second electrical connectors with said second electrical connector. Preferably, said first electrical connector is drivable in motion relative to said base by rotation of the cam desynchronously with respect to said first other electrical connector.
Afin de mieux comprendre la présente invention et de l'illustrer, un exemple de disjoncteur selon l'art antérieur et un exemple de réalisation d'un disjoncteur selon l'invention sont fournis à l'aide des figures suivantes:
- Figure 1 :
- disjoncteur selon l'art antérieur en mode de connexion fermée (
Fig. 1A ), intermédiaire (Fig. 1B ) et ouverte (Fig. 1C ). - Figure 2 :
- exemple de réalisation d'un disjoncteur selon l'invention, schématiquement représenté en mode de connexion fermée.
- Figure 3 :
- détail des mécanismes de couplage avec la came de la
Fig. 1 . - Figures 4-7 :
- illustrations du fonctionnement du disjoncteur selon l'invention lorsque ce dernier passe du mode de connexion fermée au mode de connexion ouverte.
- Figure 8 :
- disjoncteur selon l'invention en mode de connexion ouverte.
- Figure 9 :
- représentation graphique schématique du déplacement du premier autre connecteur électrique, du premier connecteur électrique et du second connecteur électrique en fonction du temps.
- Figure 1 :
- circuit breaker according to the prior art in closed connection mode (
Fig. 1A ), intermediate (Fig. 1B ) and open (Fig. 1 C ). - Figure 2:
- embodiment of a circuit breaker according to the invention, schematically shown in closed connection mode.
- Figure 3:
- details of the coupling mechanisms with the cam of the
Fig. 1 . - Figures 4-7:
- illustrations of the operation of the circuit breaker according to the invention when the latter goes from the closed connection mode to the open connection mode.
- Figure 8:
- circuit breaker according to the invention in open connection mode.
- Figure 9:
- schematic graphical representation of the displacement of the first other electrical connector, the first electrical connector and the second electrical connector as a function of time.
Les
Le disjoncteur selon l'invention est notamment illustré en
- a) en particulier dans une première partie dite « partie semi-mobile » ou « pin side » (voir référence P_S en
Fig. 2 ou8 ):- une came 3;
- une embase 1 de support sur laquelle la came 3 est montée rotative, ladite embase 1 comprenant par exemple un axe de
pivot 2 autour duquel la came 3 est capable de pivoter; - un premier connecteur électrique 6 et un premier autre connecteur électrique 6', ledit premier autre connecteur électrique 6' et ledit premier connecteur électrique 6 étant chacun entraînable en mouvement, par exemple en mouvement de translation rectiligne, par rapport à ladite embase 1 par rotation de la came 3, ledit premier autre connecteur électrique 6' et ledit premier connecteur électrique 6 étant chacun notamment configuré pour se rapprocher de ladite embase 1 lors d'une rotation de la came 3 selon un premier sens de rotation et pour s'éloigner de ladite embase 1 lors d'une rotation de la came 3 selon un second sens de rotation, inverse audit premier sens de rotation. En particulier, le premier sens de rotation correspond à l'ouverture du disjoncteur (par exemple retrait du second connecteur électrique 7 hors dudit premier connecteur électrique 6 afin de rompre la connexion électrique), et le second sens de rotation correspond à la fermeture du disjoncteur (par exemple insertion du second connecteur électrique 7 dans le premier connecteur électrique 6 afin d'établir la connexion électrique). Préférentiellement, le premier connecteur électrique 6 est un premier connecteur électrique femelle et le premier autre connecteur électrique 6' est un premier connecteur électrique mâle. En particulier, le premier et le premier autre connecteur électrique sont chacun supporté par ladite embase 1 et montés par rapport à cette dernière de façon à être mobile par rapport à ladite embase 1, notamment selon ledit mouvement de translation rectiligne ;
- préférentiellement,
un premier bras 4 ou bielle est configuré pour entraîner en rotation la came 3 autour dudit axe depivot 2 lors d'une déconnexion (ouverture du disjoncteur) ou connexion (fermeture du disjoncteur) de la partie mobile avec la partie semi-mobile du disjoncteur, leditpremier bras 4 ayant par exemple une extrémité couplée à la came 3 par un moyen de couplage rotatif ponctuel 3', par exemple un pivot, distinct de l'axe depivot 2 ; - préférentiellement, un deuxième
bras 5 ou bielle de commutation électrique par entraînement dudit premier autre connecteur électrique 6' selon un axe rectiligne confondu avec un axe longitudinal dudit premier autre connecteur électrique 6', ledit deuxièmebras 5 étant en particulier configuré pour entraîner ledit premier autre connecteur électrique 6' selon un mouvement de translation rectiligne le long dudit axe longitudinal lors d'une rotation de la came 3, ledit premier autre connecteur électrique 6' étant par exemple en forme de tige et ledit mouvement rectiligne étant réalisé selon l'axe longitudinal de ladite tige formant ledit premier autre connecteur électrique 6', ledit deuxièmebras 5 comprenant par exemple une première extrémité fixée rotative, par exemple au moyen d'un pivot, à une extrémité du premier autre connecteur électrique 6', et une deuxième extrémité fixée rotative, par exemple au moyen d'un pivot, à une première extrémité d'un troisième bras coudé 11 (voir détail enFig. 3 ), ledit troisième bras coudé 11 comprenant une seconde extrémité fixée rotative à ladite embase 1, par exemple au moyen d'un pivot 2', et unpremier coulisseau 8 ou galet situé au niveau du coude dudit troisième bras coudé, entre sa première et sa seconde extrémité, leditpremier coulisseau 8 étant configuré pour coulisser dans la premièrepiste 9 curviligne de la came 3 lorsque cette dernière entre en rotation ; - préférentiellement, un quatrième
bras 12 de commutation électrique par entraînement dudit premier connecteur électrique 6 selon un axe longitudinal dudit quatrièmebras 12, ledit quatrième bras étant ainsi configuré pour entraîner ledit premier connecteur électrique 6 en mouvement, notamment selon ledit mouvement de translation rectiligne, lors d'une rotation de la came 3, ledit quatrièmebras 12 ayant en particulier une première extrémité solidaire du premier connecteur électrique 6 et une seconde extrémité couplée à la came 3 au moyen d'un dispositif de couplage par coulissement, ledit dispositif de couplage comprenant notamment un second coulisseau 8' ou galet solidaire de la seconde extrémité du quatrièmebras 12 et coulissant dans la seconde piste 9' curviligne de la came 3 ;
- b) en particulier dans une seconde partie dite « partie mobile » ou « drive side » (voir référence D_S en
Fig. 2 ou8 ) :- ledit second connecteur électrique 7 connectable électriquement au premier connecteur électrique 6, notamment par contact avec ce dernier, et un second autre connecteur électrique 7' connectable électriquement audit premier autre connecteur électrique 6', notamment par contact avec ce dernier. Préférentiellement, le second connecteur électrique 7 est un second connecteur électrique mâle et le second autre connecteur électrique 7' est un second connecteur électrique femelle ;
- un couplage mécanique dudit second connecteur électrique 7 à ladite came 3 pour entraîner cette dernière en rotation, notamment selon ledit premier sens de rotation par rapport à ladite embase 1 lors d'une déconnexion dudit second connecteur électrique 7 et du premier connecteur électrique 6, et selon ledit second sens de rotation par rapport à ladite embase 1 lors d'une connexion dudit second connecteur électrique 7 et du
premier connecteur électrique 6. En particulier, ledit second connecteur électrique 7 est couplé mécaniquement à l'autre extrémité duditpremier bras 4 de façon à ce qu'une déconnexion de la partie mobile et de la partie semi-mobile ou leur connexion, c'est-à-dire respectivement un éloignement des parties mobile et semi-mobile ou leur rapprochement jusqu'à connexion du premier connecteur électrique 6 avec le second connecteur électrique 7, entraîne ladite came 3 en rotation. Par exemple, ledit second connecteur électrique 7 est solidaire d'une tuyère 10 servant de guide pour le premier autre connecteur électrique 6', ladite tuyère étant par exemple configurée pour guider ladite tige, ladite tuyère ayant préférentiellement une de ses extrémités la plus éloignée du second connecteur électrique 7 fixée par une liaison pivot à ladite autre extrémité dupremier bras 4 de façon à faire pivoter la came 3 par rapport à l'embase 1 autour de l'axe de pivot lors d'une déconnexion du second connecteur électrique 7 et du premier connecteur électrique 6 (par exemple lors du retrait du second connecteur électrique 7 hors du premier connecteur électrique 6) pour réaliser le mode de connexion ouverte, ou inversement, lors de sa connexion avec le premier connecteur électrique 6 (par exemple lors de son insertion dans le premier connecteur électrique 6) pour réaliser le mode de connexion fermée. Ainsi, le mode de connexion ouverte correspond à un circuit électrique ouvert dans lequel le courant ne circule plus entre la partie mobile et la partie semi-mobile, et le mode de connexion fermée correspond à un circuit électrique fermé dans lequel le courant passe entre la partie mobile et la partie semi-mobile ;
Fig. 9 .
- a) in particular in a first part called "semi-mobile part" or "pin side" (see reference P_S in
Fig. 2 or8 ):- a
cam 3; - a support base 1 on which the
cam 3 is rotatably mounted, said base 1 comprising for example apivot axis 2 about which thecam 3 is capable of pivoting; - a first
electrical connector 6 and a first other electrical connector 6 ', said first other connector electrical 6 'and said firstelectrical connector 6 being each drivable in motion, for example in rectilinear translation movement, relative to said base 1 by rotation of thecam 3, said first other electrical connector 6' and said firstelectrical connector 6 being each in particular configured to approach said base 1 during a rotation of thecam 3 in a first direction of rotation and to move away from said base 1 during a rotation of thecam 3 in a second direction of rotation, inverse to said first direction of rotation. In particular, the first direction of rotation corresponds to the opening of the circuit breaker (for example removal of the secondelectrical connector 7 from said firstelectrical connector 6 in order to break the electrical connection), and the second direction of rotation corresponds to the closing of the circuit breaker (For example insertion of the secondelectrical connector 7 in the firstelectrical connector 6 to establish the electrical connection). Preferably, the firstelectrical connector 6 is a first female electrical connector and the first other electrical connector 6 'is a first male electrical connector. In particular, the first and the first other electrical connector are each supported by said base 1 and mounted relative to the latter so as to be movable relative to said base 1, in particular according to said rectilinear translational movement; - preferably, a
first arm 4 or rod is configured to rotate thecam 3 about saidpivot axis 2 during a disconnection (opening of the circuit breaker) or connection (closing of the circuit breaker) of the mobile part with the semi-mobile part of the circuit breaker, saidfirst arm 4 having for example one end coupled to thecam 3 by a spot rotating coupling means 3 ', for example a pivot, distinct from thepivot axis 2; - preferentially, a
second arm 5 or electrical switching rod by driving said first other electrical connector 6 'along a straight axis coincident with a longitudinal axis of said first other electrical connector 6', saidsecond arm 5 being in particular configured to drive said first another electrical connector 6 'in a rectilinear translational movement along said longitudinal axis during a rotation of thecam 3, said first other electrical connector 6' being for example rod-shaped and said rectilinear movement being made along the longitudinal axis said rod forming said first other electrical connector 6 ', saidsecond arm 5 comprising for example a rotatably fixed first end, for example by means of a pivot, at one end of the first other electrical connector 6', and a second end attached rotary, for example by means of a pivot, at a first end of a tr 3rd arm angled 11 (see detail inFig. 3 ), said thirdangled arm 11 comprising a second end rotatably attached to said base 1, for example by means of a pivot 2 ', and afirst slide 8 or roller located at the elbow of said third bent arm, between its first and its second end, saidfirst slider 8 being configured to slide in the firstcurvilinear track 9 of thecam 3 when the latter is rotating; - preferably, a fourth
electric switching arm 12 for driving said firstelectrical connector 6 along a longitudinal axis of saidfourth arm 12, said fourth arm thus being configured to to cause said firstelectrical connector 6 to move, in particular according to said rectilinear translational movement, during a rotation of thecam 3, saidfourth arm 12 having in particular a first end secured to the firstelectrical connector 6 and a second end coupled to thecam 3 by means of a sliding coupling device, said coupling device comprising in particular a second slide 8 'or roller integral with the second end of thefourth arm 12 and sliding in the second track 9' curvilinear of thecam 3;
- a
- b) in particular in a second part called "moving part" or "drive side" (see reference D_S in
Fig. 2 or8 ):- said second
electrical connector 7 electrically connectable to the firstelectrical connector 6, in particular by contact with the latter, and a second other electrical connector 7 'electrically connectable to said first other electrical connector 6', in particular by contact with the latter. Preferably, the secondelectrical connector 7 is a second male electrical connector and the second other electrical connector 7 'is a second female electrical connector; - a mechanical coupling of said second
electrical connector 7 to saidcam 3 to drive the latter in rotation, in particular according to said first direction of rotation relative to said base 1 during a disconnection of said secondelectrical connector 7 and the firstelectrical connector 6, and in said second direction of rotation relative to said base 1 during a connection of said secondelectrical connector 7 and the firstelectrical connector 6. In particular, said secondelectrical connector 7 is mechanically coupled to the other end saidfirst arm 4 so that a disconnection of the mobile part and the semi-mobile part or their connection, that is to say respectively a distance of the moving and semi-moving parts or their approximation to connection of the firstelectrical connector 6 with the secondelectrical connector 7, drives saidcam 3 in rotation. For example, said secondelectrical connector 7 is integral with anozzle 10 serving as a guide for the first other electrical connector 6 ', said nozzle being for example configured to guide said rod, said nozzle preferably having one of its ends farthest from the secondelectrical connector 7 fixed by a pivot connection to said other end of thefirst arm 4 so as to pivot thecam 3 with respect to the base 1 about the pivot axis upon disconnection of the secondelectrical connector 7 and of the first electrical connector 6 (for example when removing the secondelectrical connector 7 from the first electrical connector 6) to perform the open connection mode, or conversely, when it is connected to the first electrical connector 6 (for example during its insertion in the first electrical connector 6) to achieve the closed connection mode. Thus, the open connection mode corresponds to an open electrical circuit in which the current no longer circulates between the mobile part and the semi-mobile part, and the closed connection mode corresponds to a closed electrical circuit in which the current flows between the moving part and the semi-moving part;
cam 3 is configured to drive in motion said firstelectrical connector 6 and said first other electrical connector 6 'at different speeds. Preferably, said firstelectrical connector 6 is drivable in motion, for example in rectilinear translational movement, with respect to said base 1 by rotation of thecam 3 in a desynchronized manner relative to the driving movement of the first other electrical connector 6 'when the rotation of saidcam 3. Preferably, said firstelectrical connector 6 is configured to approach said base 1 during a rotation of thecam 3 in the first direction of rotation and to move away from said base 1 when a rotation of thecam 3 according to the second direction of rotation. In particular, saidcam 3 is configured so that its rotation first moves one or the other of said first and first other electrical connectors and not both of said first and first other electrical connectors. Advantageously, one and only one cam is used for setting in motion at different speeds and / or desynchronously said first and first other electrical connectors. Thus, according to the preferred embodiment of the present invention, said first and first other electrical connectors are not set in motion simultaneously during a rotation of saidcam 3. In particular, the rotation according to said first direction of rotation is firstly in motion the first other electrical connector 6 ', then the firstelectrical connector 6. In particular, the rotation according to said second direction of rotation first moves the firstelectrical connector 6, then the first otherelectrical connector 6 . Advantageously, the rotation of saidcam 3 is able to drive in movement said first and said first other electrical connector, for example according to said rectilinear translational movement, at different speeds of movement, notably non-constant and different speeds of movement depending on of time, said first another electrical connector 6 'and said first electrical connector during its rotation, in particular until the first other electrical connector 6' reaches a final position allowing its connection with the second other electrical connector 7 'during a rotation of thecam 3 according to the second direction of rotation or a final position for disconnecting the second other electrical connector 7 'and the first other electrical connector 6' during a rotation of thecam 3 according to said first direction of rotation. According to the present invention and preferably, the displacement speed of said first other electrical connector 6 'is initially and temporarily higher than the speed of displacement of said firstelectrical connector 6 during a rotation of thecam 3 according to said first direction of rotation so that the speed of movement of said first other electrical connector 6 'at the moment of its separation from the second other electrical connector 7' is greater than the speed of displacement of said firstelectrical connector 6 at the same time, saidcam 3 and said first other electrical connector 6 'being configured so that said firstelectrical connector 6 is already separated from said secondelectrical connector 7 at said instant. It follows in particular that at least one instant or time t during said disconnection or opening of the circuit breaker, the displacement of the first other electrical connector 6 'measured between an initial position at a time t0 characterizing the connection of said firstelectrical connector 6 with said secondelectrical connector 7 and an intermediate position at said time t equal to twice the displacement effected by said firstelectrical connector 6 between an initial position at time t0 marking its connection with said secondelectrical connector 7 and an intermediate position at time t for which said secondelectrical connector 7 and said firstelectrical connector 6 are disconnected. Such a time t is represented inFig. 9 . - said second
La présente invention propose ainsi d'utiliser une unique came 3 afin de créer des vitesses de déplacement différentes en fonction du temps et optionnellement non-constantes, pour le premier connecteur électrique 6 et le premier autre connecteur électrique 6' lorsque ces derniers se rapprochent de l'embase 1, et donc s'éloignent de la partie mobile. Préférentiellement, la came 3 selon l'invention est une came bi-piste comprenant une première piste 9 servant à entraîner en mouvement le premier autre connecteur électrique 6' et une seconde piste 9' servant à entraîner en mouvement ledit premier connecteur électrique 6, de façon à ce que le premier autre connecteur électrique 6' et le premier connecteur électrique 6 soient entraînés en mouvement à des vitesses différentes en fonction du temps, par exemple en utilisant des rayons de courbures différents pour la première et seconde piste, lesdits rayons de courbures étant mesurés par rapport à l'axe de pivot 2, et variant par exemple entre une extrémité et l'autre pour chacune desdites première et seconde pistes. Par exemple, la première piste 9 peut comprendre une première section caractérisée par un rayon substantiellement constant et une deuxième section caractérisée par un rayon continuellement croissant jusqu'à atteindre une valeur maximale et la seconde piste 9' peut comprendre une première section caractérisée par un rayon décroissant continuellement jusqu'à atteindre une valeur minimale et une seconde section caractérisée par un rayon constant égale à ladite valeur minimale, un rayon étant défini de manière générale pour la première ou seconde piste comme étant la distance entre une position au centre de la piste selon sa largeur et l'axe de pivot 2. De cette façon, une rotation de la came 3 entraîne en mouvement d'abord le premier connecteur électrique 6, puis le premier autre connecteur électrique 6' lors d'une rotation de ladite came 3 selon ledit premier sens de rotation. Ainsi, selon la présente invention et préférentiellement, la distance entre chaque position centrale de ladite première piste 9 selon sa largeur (i.e. le milieu de la première piste selon sa largeur) et l'axe de pivot 2, ainsi que la distance entre chaque position centrale de la seconde piste 9' selon sa largeur (i.e. le milieu de la seconde piste selon sa largeur) et l'axe de pivot 2 varient entre une extrémité et l'autre pour chacune desdites première et seconde pistes de façon à ce que, lors de la rotation de ladite came 3, la distance entre le second coulisseau 8' et l'axe de pivot 2 et la distance entre le premier coulisseau 8 et l'axe de pivot 2 en fonction d'un angle de rotation de ladite came 3 soient différentes et engendrent dès lors des vitesses de déplacement différentes pour lesdits premier connecteur électrique et premier autre connecteur électrique lors de la rotation de la came 3. Lesdites vitesses de déplacement à un instant t, mesurables pour ledit premier connecteur électrique et premier autre connecteur électrique et résultant du coulissement du premier et second coulisseau dans respectivement la première et seconde piste lors de la rotation de la came 3, sont en particulier différentes, et préférentiellement non constantes, pour un coulissement dudit premier et/ou respectivement second coulisseau dans une ou plusieurs desdites sections de la première, respectivement seconde, piste.. Ainsi et notamment, le fait que la première piste 9 et la seconde piste 9' soient différentes et non symétriques centralement par rapport à l'axe de pivot 2 permet d'obtenir des courses ou déplacements différents pour le premier et premier autre connecteur électrique en fonction du temps, i.e. en fonction d'un angle de rotation de la came 3 au cours du temps.The present invention thus proposes to use a
En particulier, l'entrainement du premier connecteur électrique 6 et du premier autre connecteur électrique 6' par couplage mécanique à ladite came 3 au moyen respectivement du premier coulisseau 8 configuré pour se déplacer le long de la première piste 9 et du second coulisseau 8' configuré pour se déplacer le long de la seconde piste lors de la rotation de la came 3 permet d'obtenir un déplacement du premier autre connecteur électrique 6' en direction de l'embase 1 et en fonction du temps qui soit supérieur au déplacement du premier connecteur électrique 6 en direction de l'embase 1 pour un même temps.In particular, the drive of the first
Nous allons maintenant présenter de manière plus détaillée ce fonctionnement du disjoncteur selon l'invention au moyen des
La
Le disjoncteur à came selon l'invention tel que présenté en
Les
En effet, ainsi qu'illustré en
La
Claims (7)
- Cam circuit breaker comprising:- a cam (3),- a supporting baseplate (1) on which the cam (3) is rotatably mounted,- a first electrical connector˙ (6) and a first other electrical connector (6'), said first other electrical connector (6') being displaceable relative to said baseplate (1) by rotation of the cam (3),- a second electrical connector (7) electrically connectable to the first electrical connector (6) and a second other electrical connector (7') electrically connectable to said first other electrical connector (6'),- mechanical coupling of said second electrical connector (7) to said cam (3) to cause the latter to rotate,- said cam (3) being designed to move said first electrical connector (6),characterised in that- when it rotates, said cam (3) is designed to move said first other electrical connector (6') at a rate of travel different from that of the first electrical connector (6).
- Cam circuit breaker according to claim 1, wherein said first electrical connector (6) can be moved relative to said baseplate (1) by rotation of the cam (3) in a manner out of synchronism with said first other electrical connector (6').
- Cam circuit breaker according to claim 1 or 2, wherein said first electrical connector (6) and said first other electrical connector (6') are linked to said cam (3) so as to move towards said baseplate (1) and simultaneously move away from said second electrical connector (7) when the cam (3) rotates in a first rotation direction, and to move away from said baseplate (1) and simultaneously move towards said second electrical connector (7) when the cam (3) rotates in a second rotation direction contrary to said first rotation direction.
- Cam circuit breaker according to one of claims 1 to 3, wherein the coupling of said cam (3) to said first electrical connector (6) and said first other electrical connector (6') is designed to break contact between the first electrical connector (6) and the second electrical connector (7) prior to breaking of contact between the first other electrical connector (6') and the second other electrical connector (7'), the rate of travel of the first other electrical connector (6') being greater than the rate of travel of the first electrical connector (6) when electrical contact is broken between said first other electrical connector (6') and said second other electrical connector (7').
- Cam circuit breaker according to one of claims 1 to 4, wherein the cam (3) is a dual track cam comprising a first track (9) for moving the first other electrical connector (6') and a second track (9') for moving said first electrical connector (6) .
- Cam circuit breaker according to one of claims 1 to 5, wherein the rate of travel of said first other electrical connector (6') is initially and temporarily greater than the rate of travel of said first electrical connector (6) when the cam (3) rotates in said first rotation direction corresponding to opening of the circuit breaker.
- Cam circuit breaker according to one of claims 1 to 6, wherein the rates of travel of said first connector (6) and of said first other connector (6') as a function of time when the cam (3) rotates are simultaneously different non-constant speeds.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15290266.4A EP3159907B1 (en) | 2015-10-19 | 2015-10-19 | Cam circuit breaker for medium and high voltages |
PCT/EP2016/065711 WO2017067680A1 (en) | 2015-10-19 | 2016-07-04 | Cam circuit breaker for medium and high voltages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15290266.4A EP3159907B1 (en) | 2015-10-19 | 2015-10-19 | Cam circuit breaker for medium and high voltages |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3159907A1 EP3159907A1 (en) | 2017-04-26 |
EP3159907B1 true EP3159907B1 (en) | 2018-02-28 |
Family
ID=54361024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15290266.4A Not-in-force EP3159907B1 (en) | 2015-10-19 | 2015-10-19 | Cam circuit breaker for medium and high voltages |
Country Status (2)
Country | Link |
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EP (1) | EP3159907B1 (en) |
WO (1) | WO2017067680A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2491675A1 (en) * | 1980-10-07 | 1982-04-09 | Alsthom Atlantique | Gas blast type high voltage circuit breaker - has operating piston moving contact ring axially into set of contacts held on hemispherical support |
JPH07105799A (en) * | 1993-10-06 | 1995-04-21 | Toshiba Corp | Gas-blast circuit-breaker |
KR100675984B1 (en) * | 2005-07-12 | 2007-01-30 | 엘에스산전 주식회사 | Gas Insulated Circuit Breaker |
US20140175061A1 (en) * | 2012-12-20 | 2014-06-26 | Abb Technology Ag | Electrical switching device with a triple motion contact arrangement |
DE102013200918A1 (en) * | 2013-01-22 | 2014-07-24 | Siemens Aktiengesellschaft | Switchgear arrangement |
-
2015
- 2015-10-19 EP EP15290266.4A patent/EP3159907B1/en not_active Not-in-force
-
2016
- 2016-07-04 WO PCT/EP2016/065711 patent/WO2017067680A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
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EP3159907A1 (en) | 2017-04-26 |
WO2017067680A1 (en) | 2017-04-27 |
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