EP2946394B1 - Ensemble de coupure - Google Patents

Ensemble de coupure Download PDF

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Publication number
EP2946394B1
EP2946394B1 EP14701480.7A EP14701480A EP2946394B1 EP 2946394 B1 EP2946394 B1 EP 2946394B1 EP 14701480 A EP14701480 A EP 14701480A EP 2946394 B1 EP2946394 B1 EP 2946394B1
Authority
EP
European Patent Office
Prior art keywords
contact piece
arcing
switching
arcing contact
channel
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.)
Active
Application number
EP14701480.7A
Other languages
German (de)
English (en)
Other versions
EP2946394A1 (fr
Inventor
Radu-Marian Cernat
Martin KREHNKE
Volker Lehmann
Friedrich Löbner
Andrzej Nowakowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2946394A1 publication Critical patent/EP2946394A1/fr
Application granted granted Critical
Publication of EP2946394B1 publication Critical patent/EP2946394B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • 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 invention relates to a switching arrangement comprising a first contact set and a second contact set movable relative to the first contact set, and having an insulating nozzle arrangement supported on the first contact set, the first contact set having a first arcing contact piece.
  • Known switching arrangement has a first and a second contact set, wherein the first set of contacts a Isolierdüsenan ever is supported.
  • the first contact set is equipped with an arcing contact piece, which serves to guide a switching arc.
  • the insulating nozzle arrangement serves to direct and conduct a burning switching arc as well as a gas expanded by the switching arc.
  • a switching arc exerts a thermal influence on its environment. Accordingly, the first arcing contact piece and the insulating nozzle arrangement are to be designed in such a way that they have sufficient resistance to be able to repeatedly direct, conduct and guide switching arcs.
  • KR 10-2007-0008041 discloses a switching arrangement according to the preamble of claim 1.
  • the object is achieved by a switching arrangement according to the claim 1 and by an actuating method according to the claim 9. Further embodiments emerge from the subclaims.
  • a switching arrangement having a first contact set and a second contact set is configured to interrupt a current path.
  • the two sets of contacts are movable relative to each other, so that in the on state a galvanic contacting of the two sets of contacts is present, whereas in the off state an electrically isolated spacing of the two sets of contacts is present.
  • the first set of contacts may include a first arcing contact configured to have increased resistance to the effects of a switching arc.
  • the first arcing contact piece serves to guide a base point of the switching arc, so that the first arcing contact piece must firstly be capable of conducting an electric current and, secondly, it must have a sufficient erosion resistance.
  • the first arcing contact piece interacts during a switching operation with the insulating nozzle arrangement, wherein the insulating nozzle arrangement preferably encompasses a switching arc, which is guided on the first arcing contact piece, and conducts it in a nozzle channel.
  • the possibility is given to limit any bulging of the switching arc.
  • a switching chamber may be arranged between the two contact sets, in which the burning of a switching arc should preferably take place.
  • the insulating nozzle arrangement can protrude into such a switching chamber.
  • the insulating nozzle arrangement can also limit parts of the switching chamber or subdivide the switching chamber into different zones.
  • the insulating nozzle can pass through the switching chamber and allow communication of a fluid between the first contact set and the second contact set via a nozzle channel.
  • the switching arrangement in particular the switching chamber as well as the contact sets to be flooded by an electrically insulating fluid, which on the one hand serves to electrically isolate elements leading to different electrical potential, but on the other hand can also serve for cooling or blowing and finally for extinguishing a switching arc.
  • the electrically insulating fluid may be an insulating oil or also an insulating gas, for example sulfur hexafluoride, nitrogen, carbon dioxide or mixtures with these gases.
  • a movement of the first arcing contact piece relative to the insulating nozzle arrangement makes it possible to positively influence the insulation resistance in the region of the switching chamber.
  • it is possible to accumulate electrically insulating fluid so that the dielectric strength at the first arcing contact is increased by storing an increased volume of electrically insulating fluid there.
  • the first arcing contact piece for example during the guidance and steering of an arc, is positioned particularly close to the insulating nozzle arrangement, so that breaking of the switching arc in interaction with the insulating nozzle arrangement is prevented.
  • the Isolierdüsenan accent may for example have a main nozzle and an auxiliary nozzle, which together define a nozzle channel.
  • the main nozzle and the insulating nozzle for example, partially overlap each other, so that between the main nozzle and the auxiliary nozzle an annular gap is formed, which opens from a radial direction in the nozzle channel.
  • a radial mouth openings to introduce in the nozzle channel and reliablfeiten from this radial mouth opening, for example, hot switching gases.
  • a pressure relief in the nozzle channel of the Isolierdüsenan angel allows.
  • the radial orifice in the nozzle channel can be used to spend heated and enlarged in volume insulating gas (switching gas) in a so-called heating volume, temporarily store this and later release from the heating volume to promote rapid solidification of the switching path between the contact sets ,
  • a heating volume should be arranged stationarily on the first contact set. Accordingly, there is also a fixed position of the heating volume to the Isolierdüsenan eleven.
  • the heating volume may for example be penetrated by the first arcing contact piece.
  • the heating volume may have a rotationally symmetrical shape, which is centrally penetrated by the first arcing contact piece.
  • the heating volume can be surrounded on the outside shell side of a first nominal contact piece.
  • the first arcing contact piece can be movable relative to the heating volume.
  • the insulating nozzle arrangement has a substantially rotationally symmetrical structure, wherein the nozzle channel limited by the insulating nozzle arrangement is aligned coaxially to the axis of rotation. Accordingly, both the main nozzle and the auxiliary nozzle should each be rotationally symmetrical, wherein the main and auxiliary nozzles overlap each other in the radial direction by nesting, so that, for example, in the nozzle channel between the main and auxiliary nozzle an orifice is created, which is located in the radial direction in the nozzle channel.
  • the Isolierdüsenan accent is angularly connected to the first contact set.
  • the insulating nozzle arrangement may be at least partially, in particular completely, supported by the first contact set.
  • the first contact set may be designed in several parts, so that the first arcing contact piece is movable relative to the Isolierdüsenan accent.
  • the insulating nozzle arrangement slidably bears against the second contact set.
  • the insulating nozzle arrangement can pass through the switching chamber, so that the first and the second contact side are electrically insulated from one another and a mechanical bridge is formed between the contact sides in the disconnected position by the insulating nozzle arrangement.
  • the first arcing contact piece may be at least partially encompassed by the insulating nozzle arrangement.
  • the insulating nozzle arrangement may have a recess into which the first arcing contact piece protrudes.
  • the first arcing contact piece may, for example, protrude into the recess in a complementary shape.
  • the immersion depth of the first arcing contact piece is varied in the recess of the insulating nozzle arrangement by a relative movement between the insulating nozzle assembly and the first arcing contact piece.
  • the first arcing contact piece can protrude, for example, into the nozzle channel, in particular into a section of the nozzle channel enlarged in cross-section.
  • the nozzle channel can open into a recess of the nozzle arrangement, with the first arcing contact piece projecting into the recess in particular complementary to the shape.
  • the distance between the arcuate contact piece protruding into the recess and the mouth opening of the nozzle channel in the recess can vary.
  • the insulating nozzle arrangement delimits a nozzle channel which has an orifice opening which opposes an orifice opening of a channel of the first arcing contact piece.
  • the nozzle channel of the insulating nozzle arrangement preferably extends in a rotationally symmetrical insulating nozzle arrangement coaxially to the axis of rotation of the insulating nozzle arrangement.
  • the nozzle channel should be guided centrally in the Isolierdüsenan eleven.
  • the nozzle channel has in each case end openings on the mouth, in particular a end-side orifice of the nozzle channel of a mouth opening of a channel of the first arcing contact piece is arranged opposite.
  • the first arcing contact piece may be formed in the form of a so-called pipe contact piece, so that a stretched channel is formed on the first arcing contact piece, which is preferably aligned in alignment with the nozzle channel of the insulating nozzle arrangement.
  • the bushing-shaped contacting region can serve as the mouth opening of the channel.
  • the bush-shaped contacting region can be encompassed by the insulating nozzle arrangement on the outer jacket side, so that a low-loss transition from the media emerging from the nozzle channel into the channel of the first arcing contact piece is provided.
  • the nozzle channel can open, for example, in a recess of the nozzle assembly, wherein the first arcing contact protrudes complementary shape in the recess.
  • the recess may be radially expanded with respect to the cross section of the mouth opening of the nozzle channel. A shoulder running around the mouth opening thus provides space for receiving a wall surrounding the mouth opening of the channel of the first arcing contact piece.
  • a movement of the first arcing contact piece relative to the insulating nozzle arrangement may preferably be provided such that the mutually facing orifices of the nozzle channel or of the channel of the first arcing contact piece approach each other or move away from each other.
  • the mouth openings should be substantially transversely to a movement axis of the relative movement between the first arcing contact piece and the insulating nozzle arrangement lie.
  • the cross sections of the mouth openings should be arranged similarly aligned. Accordingly, the possibility is given to keep the distance of the orifices as small as possible at the beginning of a switch-off.
  • the mouth openings can touch each other, so that there is a virtually gap-free transition from the nozzle channel to the channel of the first arcing contact piece.
  • the gap remaining between the outlet openings can be encompassed by the insulating nozzle arrangement on the outer jacket side. It can be provided that, irrespective of the width of the gap, it is always encompassed by the insulating nozzle arrangement. This counteracts a radial volatilization of switching gas emerging from the nozzle channel.
  • a gripping around of the first arcing contact piece can be achieved, for example, by projecting the first arcing contact piece into a recess of the insulating nozzle arrangement. Regardless of the dimension of the gap between the mutually facing mouth openings, the first arcing contact piece should remain permanently in the recess. Corresponding to the change of the gap can the immersion depth of the first arcing contact piece in the recess vary.
  • An increase in the spacing of the mouth openings should take place before a time in which a switching arc has already gone out.
  • the first arcing contact piece should interact with a second arcing contact piece of the second contact set.
  • the mutually facing orifices of the insulating nozzle channel or the channel of the first arcing contact piece are approximated, leaving a small gap.
  • the first arcing contact piece With an additional spacing or additional movement of the first arcing contact piece relative to the insulating nozzle arrangement, there is an additional enlargement of the insulating gap between the two contact sets.
  • a pad of electrically insulating fluid is constructed between the insulating nozzle assembly and the first arcing contact piece in the increasing gap between the mutually facing mouth openings, which additionally acts cooling on the arc.
  • the first arcing contact piece is retracted into the field shadow of a shielding element.
  • a shielding element may for example be a separate field control electrode.
  • the first arcing contact piece is associated with a first rated current contact piece, which at least partially surrounds the first arcing contact piece.
  • the first arcing contact piece With a relative movement between the first arcing contact piece and the insulating nozzle arrangement, the first arcing contact piece can be selectively retracted into the shield area of the shielding element. Thus, a re-ignition of the arc after erasure is difficult because in the field shadow now field strength peaks are reduced at the first arcing contact by the electrical shield effect.
  • the nozzle channel serves to guide a fluid medium and flows out of the mouth opening of the nozzle channel emerging fluid medium into the channel.
  • a switching arc burning between the sets of contacts heats and expands within the switching chamber between the sets of contacts located electrically insulating fluid. Due to the thermal effect, the electrically insulating fluid is increased in temperature and thereby subjected to an increase in volume. In order to counteract a bursting of the switching arrangement, it is advantageous to bring this so-called switching gas (fluid medium) out of the switching path between the contact sets and to undergo relaxation. It is advantageous to derive the switching gas and to lead into non-critical areas of the switching arrangement, in which the switching gas can be mixed with, for example, cooler gas and relaxed.
  • a passage from a fluid medium from the nozzle channel into the channel of the first arcing contact piece utilizes the shaping of the first contact set in order to carry out a fluid conduction and fluid guidance in addition to an electrical conduction of the current.
  • a rapid dielectric hardening of the switching path between the contact sets can be supported by a dielectric shielding of the contacting region of the first arcing contact piece be counteracted, so that an undesired reignition of a switching arc during a turn-off.
  • a further advantageous embodiment may provide that the channel is at least partially encompassed by a contact socket of the first arcing contact piece.
  • the first arcing contact piece may, for example, have a contact socket into which a second arcing contact piece of the second set of contacts of the same shape can be inserted.
  • the contact socket can also be used to provide a mouth opening for a channel in the first arcing contact piece.
  • a fluid emerging from the nozzle channel can enter the channel of the first arcing contact piece via the contact socket.
  • the contact socket can be surrounded by the insulating nozzle arrangement in order to ensure the least possible loss of switching gas from the nozzle channel into the channel of the first arcing contact piece.
  • a further advantageous embodiment can provide that the first contact set has a first rated current contact piece, which at least partially carries the insulating nozzle arrangement.
  • the equipment of the first contact set with a first rated current contact piece makes it possible to use the first contact set to guide the first arc contact piece for guiding an arc, whereas the first rated current contact piece is used to guide a rated current. Accordingly, the first rated current contact piece can be optimized in terms of its electrical impedance, whereas the first arcing contact piece can be optimized in terms of its resistance to the effects of a switching arc.
  • the first arcing contact piece should be the first rated current contact piece be relatively movable.
  • the first arcing contact piece and the first rated current contact piece permanently lead the same potential, wherein at a switch-off first a cancellation of a galvanic connection of the first rated current contact piece with, for example, a second rated current contact piece of the second contact set, followed by a galvanic separation of the first arcing contact piece of possibly a second arcing contact piece of the second contact set.
  • an electric current to be interrupted can commutate from the rated current contact pieces to the arcing contact pieces and flow there after the galvanic separation in the form of a switching arc.
  • This switching arc must be interrupted during a switching operation, so that finally an electric current can be switched off.
  • the first rated current contact piece may at least partially support the insulating nozzle arrangement. Between the first rated current contact piece and the Isolierdüsenanowski a rigid angle composite is formed so that movements of the first rated current contact piece are also transferred to the Isolierdüsenan ever (and vice versa).
  • the first rated current contact piece should be formed in the manner of a pipe contact, wherein attachment of the insulating nozzle preferably inner jacket side, ie, should be made in a dielectrically shielded region of a tubular first rated current contact piece.
  • the first rated current contact piece should be designed as a rotationally symmetrical body whose axis of rotation is arranged coaxially to a substantially rotationally symmetrical insulating nozzle arrangement.
  • Prefers should, embraced by the first rated current contact piece, the first arcing contact piece be tubular and coaxial with the axis of rotation of the insulating nozzle assembly and the first rated current contact piece.
  • the first arcing contact piece in the region of a contact socket of the first arcing contact piece, the first arcing contact piece should be surrounded by the insulating nozzle arrangement on the outer jacket side, wherein the insulating nozzle arrangement in turn should be encompassed by the first rated current contact piece in the outer jacket side.
  • the first rated current contact piece which is formed from an electrically conductive material, cause a dielectric shielding of the first arcing contact piece and lying in the field shadow parts of the Isolierdüsenan eleven.
  • the first arcing contact piece can be moved into the dielectrically shielding region of the first rated current contact piece (switch-off operation) or moved out of the shielding region (switch-on operation).
  • the first arcing contact piece can move away from the insulating nozzle arrangement into the field shadows of the first rated current contact piece.
  • an insulating nozzle arrangement with a main nozzle and an auxiliary nozzle also has the advantage that the insulating nozzle arrangement can be exchanged as required in a modular manner.
  • the limitation of the nozzle channel through the main and auxiliary nozzle offers the possibility of between the Main nozzle and the auxiliary nozzle, for example, in the region of a joint gap between them, allow a spacing, so that a radial port opening is given at the nozzle channel.
  • excess fluid portions of a fluid medium which for example should not flow straight into the channel of the first arcing contact piece, can be discharged from the nozzle channel via this radial opening.
  • a further advantageous embodiment can provide that the first arcing contact piece is encompassed by the first rated current contact piece at least in sections.
  • the first rated current contact piece may at least partially surround the first arcing contact piece.
  • the first arcing contact piece may extend, for example, at least in sections, within the first rated current contact piece, so that additional shielding measures for the first arcing contact piece are not necessary.
  • the contacting region of the first arcing contact piece should be completely encompassed by the first rated current contact piece and be dielectrically shielded.
  • a further advantageous embodiment can provide that the first arcing contact piece and the first rated current contact piece are mounted so as to be movable relative to one another.
  • a relative movability between the first arcing contact piece and the first rated current contact piece, in particular in the direction of an axis of rotation of the first arcing contact piece makes it possible, as required, to spend the arcing contact piece, in particular in the switched-off state, in a space which is dielectrically shielded by the first rated current contact piece. On the one hand, this reduces the risk of reignition of an extinguished switching arc. On the other hand the switching path located between the two contact sides is increased and this switching path can be filled with an electrically insulating fluid. Thus, a separation of electrical potentials is improved, so that even larger voltages and larger currents can be safely controlled by the switching device arrangement.
  • the insulating nozzle arrangement should remain stationarily positioned relative to the first rated current contact piece.
  • the second contact set comprises a second rated current contact piece and a second arcing contact piece, wherein each of the two arcing contact pieces can be moved to each of the two rated current contact pieces to produce a relative movement of the contact pieces.
  • first rated current contact piece and a first arcing contact piece on the first contact set advantageously results in the use of a second arcing contact piece and a second rated current contact piece on the second contact set.
  • the first contact pieces and the second contact pieces may be formed opposite, wherein the two rated current contact pieces and the two arcing contact pieces should preferably have rotationally symmetrical contacting regions which are displaceable relative to each other along the axis of rotation.
  • a mobility of any contact pieces of the two sets of contacts makes it possible to match the leading or lagging contact or contact separation between arcing contact pieces and rated current contact pieces in an optimized manner to each other.
  • the contact separation speed or contact speed of the rated current contact pieces deviating from the contacting speed or contact separation speed of the arcing contact pieces embody. Furthermore, it is possible to move at least one arcing contact piece independently of a movement of the rated current contact pieces in a dielectrically shielded position. Thus, for example, the rated current contact pieces may already have come to rest, during which the arcing contact pieces in each case continue to make a movement to be spent in a dielectrically shielded area.
  • a method is to be specified, which serves to actuate a switching arrangement in order to achieve a reliable erasing of high-power switching arcs.
  • an actuating method for switching a switching arrangement having a first contact set and a second contact set movable relative to the first contact set, the switching arrangement having an insulating nozzle arrangement supported on the first contact set and the first contact set having a first arcing contact piece, it being provided that in one Turning the first and second contact set approach each other, wherein a distance of the first arcing contact piece is reduced to the insulating nozzle assembly.
  • the first arcing contact piece is used for contacting with a second arcing contact piece of the second contact set, wherein these contact each other in advance during a switch-on and subsequently touching a first rated current contact piece of the first contact set and a second rated current contact piece of the second contact set each other.
  • a relative movement of the first arcing contact piece to the insulating nozzle arrangement a rapid contact of the arcing contact pieces is supported.
  • the switching arrangement is already prepared during a switch-on for a switch-off by the first arcing contact piece a suitable position to the insulating nozzle assembly occupies.
  • the distance of the first arcing contact piece is thereby reduced, with an orifice opening of a nozzle channel of the insulating nozzle arrangement being approximated to the first arcing contact piece, in particular an orifice opening of a channel of the first arcing contact piece.
  • the first arcing contact piece is encompassed by the insulating nozzle arrangement at least partially outer jacket side.
  • the first arcing contact piece for example, can dive deeper into a recess of the insulating nozzle arrangement. In the recess, the nozzle channel can open
  • a further advantageous embodiment can provide that during a switch-on operation, the first arcing contact piece is moved out of a field shadow of a first rated current contact piece after an onset of a switching movement of the first set of coercive elements.
  • the switching device arrangement is prepared for a disconnection process.
  • the first arcing contact piece is moved out of a field shadow of a dielectrically shielding arrangement, for example a surrounding first rated current contact piece. If the first set of contacts is set in motion, the first arcing contact piece advantageously remains in the shield area of the first rated current contact piece of the first contact set.
  • the first rated current contact piece for example, be formed substantially tubular and engage around the first arcing contact piece.
  • a further advantageous embodiment may provide that the first contact set comprises a first arcing piece and a first rated current contact piece and the second contact set comprises a second arcing contact piece and a second nominal contact piece and each of the two arcing contact pieces and each of the two rated current contact pieces driven by a common drive device perform switching movements.
  • the FIG. 1 shows a switching arrangement in section.
  • the switching arrangement has an encapsulating housing 1.
  • the encapsulating housing 1 is substantially tubular and aligned coaxially to a longitudinal axis 2.
  • the encapsulating housing 1 is made, for example, of electrically conductive material and surrounds an interrupter unit arranged in the interior.
  • the encapsulating housing 1 preferably carries ground potential.
  • the interrupter unit has a first contact set 3 and a second contact set 4.
  • the interrupter unit is supported relative to the encapsulating housing 1 by means of electrically insulating post insulators.
  • exemplary is a post insulator 5 in the FIG. 1 shown.
  • the encapsulating housing 1 has on its shell-side circumference a plurality of flange stubs 6, 7.
  • the flange stubs 6, 7 serve to introduce phase conductors into the interior of the encapsulating housing 1 in order to electrically contact the interrupter unit located there and to integrate them into a current path to be interrupted.
  • the phase conductors pass through the jacket-side flange connection 6, 7 electrically isolated and fluid-tight.
  • disc-shaped insulators are arranged around the phase conductors for fluid-tight closing of the encapsulating housing 1, which isolate the flange stubs 6, 7 in a fluid-tight manner. Furthermore, frontal openings of the encapsulating housing 1 are closed by corresponding flange cover.
  • the interior of the encapsulating housing 1 is filled with an electrically insulating fluid, for example sulfur hexafluoride gas or another electrically insulating gas.
  • the electrically insulating fluid flows around and flushes through the interrupter unit of the switching arrangement, which is arranged in the interior of the encapsulating housing 1.
  • the interrupter unit is aligned with its longitudinal axis in alignment with the longitudinal axis 2 of the encapsulating housing.
  • the interrupter unit has a first support body 8 and a second support body 9.
  • the first support body 8 serves to position the first contact set 3.
  • the second support body 9 serves to position the second contact set 4.
  • the two support bodies 8, 9 are in this case formed differently from each other. However, it can also be provided that similarly shaped support body 8, 9 are used.
  • the two supporting bodies 8, 9 are in each case formed as hollow bodies which are of substantially rotationally symmetrical design, wherein the two supporting bodies 8, 9 have an electrically conductive material (eg a metal) and with the phase conductors which pass through the flange stubs 6, 7 are conducted into the interior of the encapsulating housing 1, are electrically conductively contacted.
  • the support members 8, 9 thus form part of a current path which is to be interrupted by the switching arrangement.
  • the two support bodies 8, 9 are aligned with their axes of rotation coaxially to the longitudinal axis 2 and spaced from each other, wherein mutually facing end faces of the two support body 8, 9 are connected to each other with an angular locking by an electrically insulating Beabstandungsêt.
  • the spacer body 10 is in the FIG. 1 represented symbolically.
  • the electrically insulating Beabstandungsisson 10 has a plurality of circumferentially distributed around the longitudinal axis 2 arranged rods which connect the two support members 8, 9 in a rigid manner with each other like a cage.
  • the switching chamber 11 of the switching arrangement is arranged.
  • the switching chamber 11 projects an insulating nozzle 12 into it.
  • the insulating nozzle arrangement 12 has a main nozzle 12a and an auxiliary nozzle 12b.
  • the main nozzle 12a and the auxiliary nozzle 12b define together a nozzle channel which is aligned coaxially with the longitudinal axis 2.
  • Main nozzle and auxiliary nozzle 12a, 12b are each constructed rotationally symmetrical, wherein the auxiliary nozzle 12b projects into the main nozzle 12a.
  • an annular channel is formed, which opens from the radial direction into the nozzle channel.
  • the annular channel connects the nozzle channel with a heating volume 13.
  • the Isolierdüsenan extract 12 with its main nozzle 12a and its auxiliary nozzle 12b is connected at an angle with an axially displaceable in the first support body 8 positioned first rated current contact piece 14.
  • An axial movement of the first rated current contact piece 14 in the direction of the longitudinal axis 2 is transmitted to the insulating nozzle assembly 12 so that it is similar to the first rated current contact piece 14 is moved.
  • the first rated current contact piece 14 is electrically conductively contacted to the first support body 8 by means of a sliding contact.
  • the first contact set 3 has a first arcing contact piece 15.
  • the first arcing contact piece 15 is tubular and aligned coaxially with the longitudinal axis 2. At its end facing the nozzle channel of the insulating nozzle arrangement 12, the first arcing contact piece 15 has a contact socket for forming a contacting region of the first arcing contact piece 15.
  • the contact bushing surrounds a mouth opening of a channel formed on the inner shell side on the tubular first arcing contact piece 15.
  • the first arcing contact piece 15 is electrically conductively connected to the first support body 8 via a sliding contact arrangement.
  • the first arcing contact piece 15 and the first rated current contact piece 14 always have the electrical potential of the first support body 8.
  • a drive rod 16 is coupled.
  • the drive rod 16 is equipped with a transverse bolt, which is guided in a slot of a drive element 25 of the first rated current contact piece 14 or the Isolierdüsenan ever 12.
  • the drive rod 16 passes through a wall of the encapsulating 1 fluid-tight. Thus, it is possible to transmit a movement generated outside of the encapsulating housing 1 to the first contact set 3.
  • the mouth opening of the channel of the first arcing contact piece 15 is arranged at a distance from an end-side mouth opening of the nozzle channel of the insulating nozzle arrangement 12.
  • the mouth opening of the nozzle channel is located in a recess of the insulating nozzle assembly 12, in which the first arcing contact piece 15 protrudes.
  • the first arcing contact piece 15 protrudes into the recess of the insulating nozzle arrangement independently of the switching position of the switching device.
  • a movement of the first rated current contact piece 14 is coupled via a reduction gear 17 also to the first arcing contact piece 14 (see. Fig. 7 ).
  • the reduction gear 17 has a lever arrangement, which causes a movement of the first rated current contact piece 14 / the Isolierdüsenan Aunt 12 and a speed increased movement of the first arcing contact piece 15 at a power-up.
  • a switch-off is a Movement of the first rated current contact piece 14 / the insulating nozzle assembly 12 and a speed increased movement of the first arcing contact piece 15 executed.
  • a movement of the first rated current contact piece 14 is also transmitted to the insulating nozzle assembly 12 due to the rigid coupling of the insulating nozzle assembly 12 on the first rated current contact piece 14.
  • the insulating nozzle arrangement 12 is struck on the inner side of the first rated current contact piece 14 and surrounds at least the contacting region with the contact socket of the first arcing contact piece 15 on the outer jacket side. Furthermore, located between the orifices of the nozzle channel and the channel of the first arcing contact piece 15 gap variable dimension is encompassed by the Isolierdüsenan angel 12.
  • crank arm 20 Fixedly mounted on the second supporting body 9.
  • the crank arm 20 is a rotary lever and converts an axial movement of the insulating nozzle assembly 12 into a rotational movement.
  • a slide passage 21 is arranged, in which a sensing element is guided, which is connected to a linearly displaceable second rated current contact piece 22.
  • the second rated current contact piece 22 is axially displaceably mounted on the second support body 9 and electrically conductively connected to the second support body 9.
  • the second rated current contact piece 22 is designed as a hollow cylinder, wherein coaxial with the second rated current contact piece 22, a second arcing contact piece 23 is arranged encompassed by the second rated current contact piece 22.
  • the second arcing contact piece 23 is displaceably mounted on the second rated current contact piece 22.
  • a supplementary movement can be coupled to the second arcing contact piece 23, so that the movement profile of the moving one second rated current contact piece 22 forms the basis for a movement of the second arcing contact piece 23, wherein the movement profiles of the first rated current contact piece 22 and the second arcing contact piece 23 complement, so that the second arcing contact piece 23 with respect to the second support body 9 is movable at a greater speed than the second rated current contact piece 22nd
  • a relative movement of the first arcing contact piece 15 to the insulating nozzle arrangement 12 is ensured.
  • the second rated current contact piece 23 still remains at rest, since the sliding gear 21 of the crank arm 20 due to its lying in this area concentric with the fulcrum path no movement on the first rated current contact piece 14 couples. Consequently, the second arcing contact piece 23, which is supported on the second rated current contact piece 23, also remains at rest.
  • an opposite movement is transmitted to the second arcing contact piece 23 in the following.
  • both the first rated current contact piece 14 and the second rated current contact piece 22 and the first arcing contact piece 15 and the second arcing contact piece 23 are removed from each other.
  • a removal of the first arcing contact piece 15 from the region of the switching chamber 11 is faster than a distance of the first rated current contact piece 14 from the switching chamber 11.
  • the first arcing contact piece 15 is moved into the screen area of the first rated current contact piece 14, resulting in a distance of the first arcing contact piece 15 the opening of the nozzle channel of the insulating nozzle arrangement 12 facing the first arcing contact piece 15 increases.
  • a switched after the contact separation of the two arcing contact pieces 15, 23 Ausschaltlichtbogen (change from the Fig. 4 to the Fig. 5 ) burns between the two arcing contact pieces 15, 23 and is guided within the nozzle channel of the insulating nozzle assembly 12.
  • the nozzle channel of the switching arc expands so-called switching gas, which can escape via the frontal mouth opening of the nozzle channel, which faces the first arcing contact piece 15.
  • the switching gas emerging from the nozzle channel of the insulating nozzle arrangement 12 is radiated into the mouth opening of the channel of the first arcing contact piece 15.
  • the first arcing contact piece 15 discharges the switching gas from the switching chamber.
  • the radial annular channel formed between the main nozzle 12a and the auxiliary nozzle 12b is used to derive switching gas from the area of the burning switching arc from the nozzle channel of the insulating nozzle arrangement 12. This switching gas is introduced into the heating volume 13. Due to the thermal energy input, the expanding switching gas is compressed within the heating volume 13.
  • the reduction gear 17 is shown in detail.
  • the drive rod 16 is connected via a transverse bolt to a drive element 25 of the first rated current contact piece 14 or the Isolierdüsenan ever 12.
  • the cross pin engages in a slot of the drive element 25 a.
  • the reduction gear 17 is equipped with a one-armed lever 26.
  • the one-armed lever 26 is struck stationary on the first support body 8.
  • the one-armed lever 26 is connected at its free end with the transverse bolt in the slot of the drive element 25.
  • a coupling with the linearly displaceable for transmitting a movement drive rod 16 is given via the one-armed lever 26.
  • the one-armed lever 26 is pivoted upon movement of the drive rod 16. To compensate for an overstroke of the one-armed lever 26, this slides through the slot of the drive element 25.
  • the elastically deflectable drive rod 16 is moved over the cross bolt from its coaxial position to the longitudinal axis 2 to compensate for the overstroke of the one-armed lever 26.
  • the one-armed lever 26 is further provided with a drive pin 27, wherein the distance of the drive pin 27 to the pivot point of the one-armed lever 26 is greater than the distance of the transverse pin to the pivot point of the one-arm lever 26.
  • the drive pin 27 upon pivoting of the one-armed lever 26th the drive pin 27 a greater way back than the cross pin, so that a relation to the movement of the transverse pin deviating motion on the drive pin 27 can be tapped.
  • a Lasehe 28 struck which is connected to the linearly displaceable first arcing contact piece 15.
  • the tab 28 is connected via a linearly displaceable push element which is guided in the interior of the tubular drive element 25.
  • the tab 28 is discharged through a jacket-side opening in the drive element 25 cranked and coupled to a slot on the drive pin 27. In this case, the slot is directed so that an overstroke of the located on the one-armed lever 26 drive pin 27 can be compensated.
  • FIG. 8 shows an alternative transmission gear.
  • a two-armed lever 29 is rotatably mounted.
  • the drive rod 16 is connected to the drive element 25, so that movements of the drive rod 16 are transmitted directly to the drive element 25 and consequently also to the first rated current contact piece 14 and the Isolierdüsenan accent 12.
  • the two-armed lever 29 is connected with its one lever arm with a tab 28 which is guided linearly displaceable in the drive element 25 and transmits a movement to the first arcing contact piece 15.
  • a sliding gate 30 is fixedly positioned on the first supporting body 8. The slide gate 30 is scanned by the other lever arm of the two-armed lever 29, while the pivot point of the two-armed lever 29 is moved together with the drive element 25. Due to the shape of the link 30, insertion or suspension of transmission of movement of the tab 28 / the first arcing contact 15 can be easily adjusted.
  • the end regions of the sliding gear 30 arranged parallel to the axis of movement of the drive element 25.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (11)

  1. Système de coupure, comprenant un premier jeu (3) de contact et un deuxième jeu (4) de contact mobile par rapport au premier jeu (3) de contact, ainsi qu'un système (12) de buse isolant appuyé sur le premier jeu (3) de contact, le premier jeu (3) de contact ayant une première pièce de contact d'arc électrique et une première pièce (14) de contact de courant nominal, le système de buse isolant étant relié, d'une manière fixe angulairement, à la première pièce (14) de contact de courant nominal, grâce à quoi un déplacement axial de la première pièce (14) de contact de courant nominal dans la direction d'un axe (2) longitudinal est transmis au système (12) de buse isolant,
    caractérisé en ce que
    la première pièce (15) de contact d'arc électrique est mobile par rapport au système (12) de buse isolant,
    et en ce que le système (12) de buse isolant a une buse (12a) principale et une buse (12b) auxiliaire, qui délimitent chacune un tronçon du canal de buse.
  2. Système de coupure suivant la revendication 1,
    caractérisé en ce que
    le système (12) de buse isolant délimite un canal de buse, qui a une ouverture d'embouchure, laquelle est en face d'une ouverture d'embouchure d'un canal de la première pièce (15) de contact d'arc électrique.
  3. Système de coupure suivant la revendication 2,
    caractérisé en ce que
    le canal de buse sert à conduire un milieu fluide et, du milieu fluide, sortant de l'ouverture d'embouchure du canal de buse, entre dans le canal.
  4. Système de coupure suivant l'une des revendications 2 ou 3,
    caractérisé en ce que
    le canal est, au moins par endroit, enveloppé d'une tulipe de contact de la pièce (15) de contact d'arc électrique.
  5. Système de coupure suivant l'une des revendications 1 à 4,
    caractérisé en ce que
    le premier jeu (3) de contact a une première pièce (14) de contact de courant nominal, qui porte, au moins en partie, le système (12) de bus isolant.
  6. Système de coupure suivant la revendication 5,
    caractérisé en ce que
    la première pièce (15) de contact d'arc électrique est, au moins par endroit, enveloppée de la première pièce (14) de contact de courant nominal.
  7. Système de coupure suivant l'une des revendications 5 à 6,
    caractérisé en ce que
    la première pièce (15) de contact d'arc électrique et la première pièce (14) de contact de courant nominal sont montées mobiles l'une par rapport à l'autre.
  8. Système de coupure suivant l'une des revendications 5 à 7,
    caractérisé en ce que
    le deuxième jeu (4) de contact a une deuxième pièce (22) de contact de courant nominal et une deuxième pièce (23) de contact d'arc électrique, dans lequel, pour produire un mouvement relatif, chacune des deux pièces (15, 23) de contact d'arc électrique est mobile par rapport à chacune des deux pièces (14, 22) de contact de courant nominal.
  9. Procédé d'actionnement pour la commutation d'un système de coupure suivant l'une des revendications précédentes, comprenant un premier jeu (3) de contact et un deuxième jeu (4) de contact mobile par rapport au premier jeu (3) de contact, ainsi qu'un système (12) de buse isolant appuyé sur le premier jeu (3) de contact, le premier jeu (3) de contact ayant une première pièce (15) de contact d'arc électrique et dans lequel, lors d'une opération de fermeture, le premier et le deuxième jeux (3, 4) de contact se rapprochent l'un de l'autre, tandis que la distance de la première pièce (15) de contact d'arc électrique au système (12) de buse isolant se réduit,
    dans lequel, lors d'une opération de fermeture, la première pièce (15) de contact d'arc électrique sort, après un déplacement de commutation du premier jeu (3) de contact, d'une ombre de champ d'une première pièce (14) de contact courant nominal.
  10. Procédé d'actionnement suivant la revendication 9,
    caractérisé en ce que
    lors d'une opération d'ouverture, il s'établit un agrandissement de la distance entre la première (15) de contact d'arc électrique et le système (12) de buse isolant, avant l'extinction d'un arc électrique de coupure.
  11. Système de coupure suivant l'une des revendications 1 à 8,
    caractérisé en ce que
    le premier jeu (3) de contact a une première pièce (15) d'arc électrique et une première pièce (14) de contact de courant nominal et le deuxième jeu (4) de contact, une deuxième pièce (15) de contact d'arc électrique et une deuxième pièce (22) de contact nominal, et chacune des deux pièces (15, 23) de contact d'arc électrique et chacune des deux pièces (14, 22) de contact de courant nominal effectue des déplacements de coupure en étant entraînée par un dispositif d'entraînement commun.
EP14701480.7A 2013-01-22 2014-01-07 Ensemble de coupure Active EP2946394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013200913.5A DE102013200913A1 (de) 2013-01-22 2013-01-22 Schaltanordnung
PCT/EP2014/050133 WO2014114483A1 (fr) 2013-01-22 2014-01-07 Ensemble de coupure

Publications (2)

Publication Number Publication Date
EP2946394A1 EP2946394A1 (fr) 2015-11-25
EP2946394B1 true EP2946394B1 (fr) 2019-07-17

Family

ID=50023530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14701480.7A Active EP2946394B1 (fr) 2013-01-22 2014-01-07 Ensemble de coupure

Country Status (7)

Country Link
US (1) US9741514B2 (fr)
EP (1) EP2946394B1 (fr)
CN (1) CN104937688B (fr)
AU (1) AU2014210105B9 (fr)
DE (1) DE102013200913A1 (fr)
RU (1) RU2629568C2 (fr)
WO (1) WO2014114483A1 (fr)

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GB2581937B (en) * 2013-12-24 2020-12-23 Viewtag Electronic luggage tags
EP3151261B1 (fr) * 2015-10-02 2019-06-12 Siemens Aktiengesellschaft Disjoncteur à came pour moyennes et hautes tensions
DE102016226034A1 (de) * 2016-12-22 2018-06-28 Siemens Aktiengesellschaft Elektrische Schalteinrichtung
KR20180087745A (ko) * 2017-01-25 2018-08-02 엘에스산전 주식회사 다중 레버를 가진 듀얼 모션 방식의 가스절연 개폐장치
DE102017217053A1 (de) * 2017-09-26 2019-03-28 Siemens Aktiengesellschaft Modulsatz für den Bau von Leistungsschaltern
RU179273U1 (ru) * 2017-12-22 2018-05-07 Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт авиационных систем" (ФГУП "ГосНИИАС") Коммутационное устройство
JP6901425B2 (ja) * 2018-03-13 2021-07-14 株式会社日立製作所 ガス遮断器
CN109148215B (zh) * 2018-10-11 2019-10-11 西安西电开关电气有限公司 断路器
DE102019206807A1 (de) * 2019-05-10 2020-11-12 Siemens Aktiengesellschaft Mittelspannungs-Lasttrennschalter

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Also Published As

Publication number Publication date
US20150371797A1 (en) 2015-12-24
EP2946394A1 (fr) 2015-11-25
CN104937688A (zh) 2015-09-23
RU2629568C2 (ru) 2017-08-30
US9741514B2 (en) 2017-08-22
AU2014210105A1 (en) 2015-07-09
DE102013200913A1 (de) 2014-07-24
AU2014210105B2 (en) 2016-12-15
AU2014210105B9 (en) 2017-01-05
RU2015135576A (ru) 2017-03-02
WO2014114483A1 (fr) 2014-07-31
CN104937688B (zh) 2019-04-19

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