EP1502272A1 - Electric switching device with a cooling device - Google Patents

Electric switching device with a cooling device

Info

Publication number
EP1502272A1
EP1502272A1 EP03735261A EP03735261A EP1502272A1 EP 1502272 A1 EP1502272 A1 EP 1502272A1 EP 03735261 A EP03735261 A EP 03735261A EP 03735261 A EP03735261 A EP 03735261A EP 1502272 A1 EP1502272 A1 EP 1502272A1
Authority
EP
European Patent Office
Prior art keywords
switching device
solid wall
fitting
electrical switching
cooling
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.)
Granted
Application number
EP03735261A
Other languages
German (de)
French (fr)
Other versions
EP1502272B1 (en
Inventor
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 EP1502272A1 publication Critical patent/EP1502272A1/en
Application granted granted Critical
Publication of EP1502272B1 publication Critical patent/EP1502272B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H01H2009/526—Cooling of switch parts of the high voltage switches
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H2033/888—Deflection of hot gasses and arcing products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

Definitions

  • the invention relates to an electrical switching device, which causes an extinguishing gas flow in the course of a switching-off movement, with a passage wall for the extinguishing gas flow having a solid wall of a cooling device.
  • Such an electrical switching device is known, for example, from US Pat. No. 4,328,403.
  • the electrical switching device there has a switching path in which quenching gas is generated due to an arc.
  • This quenching gas flows through a channel into a cooling device which is designed as a cooling tube.
  • This cooling pipe has a solid wall, into which several through openings for the passage of the extinguishing gas flow are made.
  • the cooling device also has a cooling fabric (mesh cooler) which is arranged in the interior of the insulating tube and partially covers the through openings.
  • the cooling effect of such a cooling tube depends on the number and the cross section of the through openings made in the solid wall. Depending on the desired cooling effect, it is therefore necessary to introduce a different number of through openings into the cooling tube.
  • the cooling capacity to be provided by the cooling device is essentially determined by the design of the electrical switching device. Changes in the design of the electrical switching device therefore forcefully adapt the cooling device with regard to its cooling capacity after itself. This applies in particular to the type and number as well as the arrangement of the passage openings.
  • the object is achieved according to the invention in the case of an electrical switching device with a cooling device of the type mentioned at the outset in that at least one of the passage openings can be closed by means of a mounting fitting which is detachably connected to the cooling device.
  • At least one of the passage openings can be closed. This makes it possible to use a standard body with through openings arranged in a standardized manner and, depending on the structural conditions of the electrical switching device, to adapt it in such a way that a desired cooling behavior can be achieved.
  • a suitable fitting fitting By combining the locking action with a suitable fitting fitting, it is possible to both grip the solid wall and to close openings in the solid wall using the fitting fitting.
  • the detachable connection of the cooling device and the mounting fitting results in advantages with regard to the mounting of the cooling device in the electrical switching device.
  • different cooling devices with different cooling capacities can be preassembled with a small number of basic elements. This eliminates the need for complex positioning of various types of cooling devices.
  • An advantageous embodiment can further provide that the mounting fitting at least partially fixes the cooling device.
  • fitting fitting is additionally extended beyond the area required for fixing the cooling device in order to close at least one of the passage openings.
  • the solid wall is tubular.
  • a tubular wall represents a dielectrically advantageous structure on which passage openings can be arranged in a large area.
  • Wall is arranged.
  • the fitting is arranged on the outside, the inner area of the tubular solid wall remains free of additional fittings. The flow of the extinguishing gas on the inside of the tubular wall is thus not impeded. Furthermore, the fitting fitting can be mounted in a simple manner on the outside of the tubular solid wall.
  • the mounting fitting completely encompasses the tubular solid wall at one end.
  • the fitting fitting closes off the tubular wall at one end and holds the wall without greatly increasing its circumference.
  • the tubular wall can thus be easily installed in small-volume electrical switching devices and positioned there. Due to the full extent, there is still a good mechanical support of the solid wall in the fitting fitting. Holding forces are distributed over a large area.
  • the fitting fitting forms an end fitting for the tubular solid wall in the form of a pipe socket and that the fitting fitting is extended further to a central section of the tubular solid wall than is necessary for the mechanical holding function.
  • a pipe socket forms a particularly advantageous design variant for the fitting fitting. Pipe sockets are particularly easy to manufacture and can be connected to the tubular solid wall.
  • the solid wall having through openings is formed by a perforated plate.
  • a perforated plate can be produced in a particularly inexpensive manner.
  • a tube can be easily produced from the perforated plate.
  • the socket fitting With a suitable design of the socket fitting, it is possible to design the tube in such a way that the perforated plate is overlapping in the region of the tube seam and is held in the tube shape by the socket fitting. It is therefore not necessary to keep the perforated plate itself in the tube shape, for example by means of welds.
  • Figure the schematic structure of an electrical switching device with a cooling device.
  • the figure shows an electrical switching device 1, namely a high-voltage circuit breaker in a schematic representation.
  • the electrical switching device 1 is arranged within a housing, not shown, which is filled with an insulating gas.
  • the electrical switching device 1 has a movable arcing contact piece 2 and a fixed arcing contact piece 3.
  • a movable nominal current contact piece 4 and a fixed arcing contact piece 5 are arranged coaxially with the arcing contact piece 2 and the movable fixed contact piece 3 opposite it.
  • an arc occurs at the arcing contact pieces 2 and 3. Because of this arc, an extinguishing gas is generated in the region of the insulating material nozzle 6 surrounding the two arcing contact pieces 2, 3.
  • this quenching gas flows out of the insulating material nozzle 6 in the direction of the fixed arcing contact piece 3.
  • the fixed arcing contact piece 3 is surrounded by a tubular channel 7.
  • the extinguishing gas flows in the interior of the tubular channel 7 from that formed by the two arcing contact pieces 2, 3
  • the first flow deflection device 8 directs the extinguishing gas flow onto the outside of the tubular channel 7.
  • the first flow deflection device 8 is part of a support housing 9.
  • the support housing 9 has a radial one
  • the radial opening 10 is formed in an annular circumference.
  • the radial opening 10 is covered by a second tubular deflection device 11.
  • An outflow opening 12 is formed between the second deflecting device 11 and the first deflecting device 8, through which the extinguishing gas can escape.
  • a tubular solid wall 13 of a cooling device is arranged in the area of the radial opening 10 in the flow path of the extinguishing gas.
  • the tubular solid wall 13 has a plurality of through openings 14a, b, c.
  • the pipe socket 16 acts as a fitting fitting and completely surrounds the tubular solid wall 13.
  • the pipe socket 16 has a radially inwardly directed stop 17, which limits the sliding of the pipe socket 16 onto the tubular solid wall 13.
  • the stop 17 serves as a stop for the flow deflecting device 8, which presses the pipe socket 16 and the tubular solid wall 13 into the stationary annular groove 15.
  • a circumferential collar 18 is integrally formed on the pipe socket 16, which engages in a groove in the deflection device 11. Axial displacement of the pipe socket 16 is thus prevented.
  • the pipe socket 16 is extended further in the direction of the center of the tubular solid wall 13 than is necessary to mount the tubular solid wall 13. The overlap required for mounting can be seen in the figure, for example, by the depth of the annular groove 15.
  • a through opening 14c is closed by the widening in the direction of the center of the tubular solid wall 13.
  • the number of closable through openings can be variably adjusted.
  • the cooling capacity of the cooling device can be changed and the flow of the extinguishing gas can be controlled.
  • the tubular solid wall 13 shown in the figure can advantageously be formed from a perforated plate.
  • the perforated plate is to be bent into a tubular shape, the ends of the perforated plate overlapping.
  • the tubular solid wall 13 With a slightly larger choice of the diameter of the tubular solid wall 13 compared to the diameter of the annular groove 15 and opposite the diameter of the pipe socket 16, the tubular solid wall 13 can be inserted elastically self-holding in the annular groove 15 and the pipe socket 16.

Abstract

In order to control the cooling power of a cooling device in an electric switching device (1), through-openings (14a, b, c) can be closed by means of a holding fitting (16). The holding fitting (16) fixes the cooling device in an at least partial manner.

Description

Beschreibung ( Description (
Elektrisches Schaltgerät mit einer KühleinrichtungElectrical switching device with a cooling device
Die Erfindung bezieht sich auf ein elektrisches Schaltgerät, welches im Zuge einer Ausschaltbewegung eine Löschgasströmung hervorruft, mit einer Durchtrittsöffnungen für die Löschgas- Strömung aufweisenden massiven Wandung einer Kühleinrichtung.The invention relates to an electrical switching device, which causes an extinguishing gas flow in the course of a switching-off movement, with a passage wall for the extinguishing gas flow having a solid wall of a cooling device.
Ein derartiges elektrisches Schaltgerät ist beispielsweise aus dem US-Patent 4,328,403 bekannt. Das dortige elektrische Schaltgerät weist eine Schaltstrecke auf, in welcher durch einen Lichtbogen bedingt Löschgas generiert wird. Dieses Löschgas strömt durch einen Kanal in eine Kühleinrichtung, welche als Kühlrohr ausgebildet ist. Dieses Kühlrohr weist eine massive Wandung auf, in welche mehrere Durchtrittsöffnungen zum Durchtritt der LöschgasStrömung eingebracht sind. Zur Verbesserung der Kühlwirkung des Kühlrohres weist die Kühleinrichtung weiterhin ein Kühlgewebe (Mesh-Cooler) auf, welches im Inneren des Isolierrohres angeordnet ist und teilweise die Durchtrittsöffnungen überdeckt .Such an electrical switching device is known, for example, from US Pat. No. 4,328,403. The electrical switching device there has a switching path in which quenching gas is generated due to an arc. This quenching gas flows through a channel into a cooling device which is designed as a cooling tube. This cooling pipe has a solid wall, into which several through openings for the passage of the extinguishing gas flow are made. To improve the cooling effect of the cooling tube, the cooling device also has a cooling fabric (mesh cooler) which is arranged in the interior of the insulating tube and partially covers the through openings.
Die Kühlwirkung eines derartigen Kühlrohres ist abhängig von der Anzahl sowie dem Querschnitt der in die massive Wandung eingebrachten Durchtrittsöffnungen. Je nach gewünschter Kühl- wirkung ist es deshalb notwendig, eine unterschiedliche Anzahl von Durchtrittsöffnungen in das Kühlrohr einzubringen. Die von der Kühleinrichtung zu erbringende Kühlleistung wird im Wesentlichen durch die Konstruktion des elektrischen Schaltgerätes festgelegt. Änderungen in der Konstruktion des elektrischen Schaltgerätes ziehen deshalb zwangsweise Anpassungen der Kühleinrichtung hinsichtlich ihrer Kühlleistung nach sich. Das betrifft insbesondere die Art und Anzahl sowie die Anordnung der Durchtrittsöffnungen.The cooling effect of such a cooling tube depends on the number and the cross section of the through openings made in the solid wall. Depending on the desired cooling effect, it is therefore necessary to introduce a different number of through openings into the cooling tube. The cooling capacity to be provided by the cooling device is essentially determined by the design of the electrical switching device. Changes in the design of the electrical switching device therefore forcefully adapt the cooling device with regard to its cooling capacity after itself. This applies in particular to the type and number as well as the arrangement of the passage openings.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die eine massive Wandung aufweisende Kühleinrichtung eines elektrischen Schaltgerätes derart auszubilden, dass eine vereinfachte Anpassung der Kühlleistung der Kühleinrichtung ermöglicht ist.It is the object of the present invention to design the cooling device of an electrical switching device having a solid wall in such a way that a simplified adaptation of the cooling capacity of the cooling device is made possible.
Die Aufgabe wird bei einem elektrischen Schaltgerät mit einer Kühleinrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass zumindest eine der Durchtrittsöffnungen mittels einer lösbar mit der Kühleinrichtung verbundenen Fassungsarmatur verschließbar ist.The object is achieved according to the invention in the case of an electrical switching device with a cooling device of the type mentioned at the outset in that at least one of the passage openings can be closed by means of a mounting fitting which is detachably connected to the cooling device.
Zur Steuerung der Kühlleistung der Kühleinrichtungen ist zumindest eine der Durchtrittsöffnungen verschließbar. Dadurch ist es ermöglicht, einen Standardkörper mit standardisiert angeordneten Durchtrittsöffnungen zu verwenden und diesen je nach den konstruktiven Gegebenheiten des elektrischen Schaltgerätes so anzupassen, dass ein gewünschtes Kühlverhalten erzielbar ist. Durch die Kombination der Verschlusswirkung mit einer geeigneten Fassungsarmatur ist es möglich, die massive Wandung sowohl zu fassen als auch Öffnungen in der massiven Wandung durch die Fassungsarmatur zu verschließen. Durch die lösbare Verbindung von Kühleinrichtung und Fassungsarmatur ergeben sich Vorteile hinsichtlich der Montage der Kühleinrichtung in dem elektrischen Schaltgerät. Weiterhin können mit einer geringen Anzahl von Grundelementen verschiedene Kühleinrichtungen mit unterschiedlichen Kühlleistungen vormontiert werden. Dadurch ist eine aufwendige Lagehaltung verschiedenartiger Kühleinrichtungen hinfällig. Eine vorteilhafte Ausgestaltung kann weiterhin vorsehen, dass die Fassungsarmatur die Kühleinrichtung zumindest teilweise fixiert .To control the cooling capacity of the cooling devices, at least one of the passage openings can be closed. This makes it possible to use a standard body with through openings arranged in a standardized manner and, depending on the structural conditions of the electrical switching device, to adapt it in such a way that a desired cooling behavior can be achieved. By combining the locking action with a suitable fitting fitting, it is possible to both grip the solid wall and to close openings in the solid wall using the fitting fitting. The detachable connection of the cooling device and the mounting fitting results in advantages with regard to the mounting of the cooling device in the electrical switching device. Furthermore, different cooling devices with different cooling capacities can be preassembled with a small number of basic elements. This eliminates the need for complex positioning of various types of cooling devices. An advantageous embodiment can further provide that the mounting fitting at least partially fixes the cooling device.
Durch eine derartige Ausgestaltung sind zusätzliche Halteeinrichtungen zum Fixieren der Kühleinrichtungen vermeidbar. Dadurch sinkt die Anzahl der notwendigen Bauteile.Such a configuration makes it possible to avoid additional holding devices for fixing the cooling devices. This reduces the number of components required.
Vorteilhafterweise kann vorgesehen sein, dass die Fassungsar- matur zusätzlich über den zur Fixierung der Kühleinrichtung nötigen Bereich hinaus ausgedehnt ist, um zumindest eine der Durchtrittsöffnungen zu verschließen.It can advantageously be provided that the fitting fitting is additionally extended beyond the area required for fixing the cooling device in order to close at least one of the passage openings.
Durch eine zusätzliche Ausdehnung der Fassungsarmatur ist es in einfacher Weise möglich, eine größere Anzahl von Durchtrittsöffnungen zu verschließen. Da nunmehr der über den zur Fixierung der Kühleinrichtungen nötige Bereich lediglich der Abdeckung und dem Verschluss von Durchtrittsöffnungen dient, kann dort eine materialsparende Konstruktionen genutzt wer- den, da diese Bereiche keine Kräfte zur Fixierung der Kühleinrichtung aufbringen müssen. Dadurch wird die Fassungsarmatur trotz der zusätzlichen Aufgabe des Verschließens nur um ein geringeres Maß schwerer.An additional expansion of the mounting fitting makes it possible in a simple manner to close a larger number of through openings. Since the area required for fixing the cooling devices is now only used to cover and close the passage openings, a material-saving design can be used there, since these areas do not have to exert any forces for fixing the cooling device. As a result, the fitting is only a little heavier despite the additional task of closing.
Weiterhin kann vorteilhaft vorgesehen sein, dass die massive Wandung rohrförmig ausgebildet ist.Furthermore, it can advantageously be provided that the solid wall is tubular.
Eine rohrförmige Wandung stellt ein dielektrisch vorteilhaftes Gebilde dar, an welchem in einem großen Bereich Durch- trittsöffnungen anordenbar sind. Bei einem relativ kleinenA tubular wall represents a dielectrically advantageous structure on which passage openings can be arranged in a large area. With a relatively small one
Bauvolumen ist so eine große Kühlleistung erzielbar. Eine weitere vorteilhafte Ausgestaltung sieht vor, dass dieA large cooling capacity can be achieved in this way. Another advantageous embodiment provides that the
Fassungsarmatur auf der Außenseite der rohrförmigen massivenSocket fitting on the outside of the tubular solid
Wandung angeordnet ist.Wall is arranged.
Bei einer Anordnung der Fassungsarmatur auf der Außenseite bleibt der innere Bereich der rohrförmigen massiven Wandung frei von zusätzlichen Einbauten. Damit ist das Strömen des Löschgases auf der Innenseite der rohrförmigen Wandung nicht behindert. Weiterhin ist die Fassungsarmatur auf der Außen- seite der rohrförmigen massiven Wandung in einfache Art und Weise montierbar.If the fitting is arranged on the outside, the inner area of the tubular solid wall remains free of additional fittings. The flow of the extinguishing gas on the inside of the tubular wall is thus not impeded. Furthermore, the fitting fitting can be mounted in a simple manner on the outside of the tubular solid wall.
Es kann vorteilhaft vorgesehen sein, dass die Fassungsarmatur die rohrförmige massive Wandung an einem Ende in vollem Um- fang umfasst.It can advantageously be provided that the mounting fitting completely encompasses the tubular solid wall at one end.
Die Fassungsarmatur schließt die rohrförmige Wandung an einem Ende ab und haltert die Wandung, ohne deren Umfang stark zu vergrößern. Somit ist die rohrförmige Wandung in kleinvolu- mige elektrische Schaltgeräte in einfacher Art und Weise einzubauen und dort zu positionieren. Durch die Umfassung im vollen Umfange ergibt sich weiterhin eine gute mechanische Halterung der massiven Wandung in der Fassungsarmatur. Auftretende Haltekräfte werden so auf einer großen Fläche ver- teilt.The fitting fitting closes off the tubular wall at one end and holds the wall without greatly increasing its circumference. The tubular wall can thus be easily installed in small-volume electrical switching devices and positioned there. Due to the full extent, there is still a good mechanical support of the solid wall in the fitting fitting. Holding forces are distributed over a large area.
Neben den bereits beschriebenen Ausgestaltungsvarianten kann weiterhin vorgesehen sein, dass die Fassungsarmatur eine Endfassung für die rohrförmige massive Wandung in Form eines Rohrstutzens ausbildet und dass die Fassungsarmatur zu einem mittleren Abschnitt der rohrförmigen massive Wandung weiter ausgedehnt ist, als für die mechanische Haltefunktion notwendig. Ein Rohrstutzen bildet eine besonders vorteilhafte Ausgestaltungsvariante für die Fassungarmatur. Rohrstutzen sind besonders einfach zu fertigen und mit der rohrförmigen massiven Wandung verbindbar.In addition to the design variants already described, it can further be provided that the fitting fitting forms an end fitting for the tubular solid wall in the form of a pipe socket and that the fitting fitting is extended further to a central section of the tubular solid wall than is necessary for the mechanical holding function. A pipe socket forms a particularly advantageous design variant for the fitting fitting. Pipe sockets are particularly easy to manufacture and can be connected to the tubular solid wall.
Weiterhin kann vorteilhaft vorgesehen sein, dass die Durchtrittsöffnungen aufweisende massive Wandung durch ein Lochblech gebildet ist.Furthermore, it can advantageously be provided that the solid wall having through openings is formed by a perforated plate.
Ein Lochblech ist in besonders günstiger Art und Weise herstellbar. Bei Verwendung einer rohrförmigen massiven Wandung ist aus dem Lochblech ein Rohr einfach herstellbar. Bei einer geeigneten Ausgestaltung der Fassungsarmatur ist es dabei möglich, das Rohr derart auszubilden, dass das Lochblech im Bereich der Rohrnaht überlappend ausgebildet ist und durch die Fassungsarmatur in der Rohrform gehalten wird. Damit ist es nicht notwendig, das Lochblech selbst, beispielsweise mittels Verschweißungen, in der Rohrform zu halten.A perforated plate can be produced in a particularly inexpensive manner. When using a tubular solid wall, a tube can be easily produced from the perforated plate. With a suitable design of the socket fitting, it is possible to design the tube in such a way that the perforated plate is overlapping in the region of the tube seam and is held in the tube shape by the socket fitting. It is therefore not necessary to keep the perforated plate itself in the tube shape, for example by means of welds.
Im Folgenden wird die Erfindung anhand eines Ausführungsbei- spiels in einer Zeichnung gezeigt und nachfolgend näher beschrieben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and described in more detail below.
Dabei zeigt dieThe shows
Figur den schematischen Aufbau eines elektrischen Schaltgerätes mit einer Kühleinrichtung.Figure the schematic structure of an electrical switching device with a cooling device.
Die Figur zeigt ein elektrisches Schaltgerät 1, und zwar ein Hochspannungs-Leistungsschalter in einer schematischen Darstellung. Das elektrische Schaltgerät 1 ist innerhalb eines mit einem Isoliergas gefüllten in der Figur nicht dargestellten Gehäuses angeordnet. Das elektrische Schaltgerät 1 weist ein bewegbares Lichtbogenkontaktstück 2 sowie ein feststehendes Lichtbogenkontaktstück 3 auf. Koaxial zu dem Lichtbogenkontaktstück 2 und dem diesem gegenüberstehenden bewegbaren feststehenden Kontaktstück 3 sind ein bewegbares Nennstrom- kontaktstück 4 sowie ein feststehendes Lichtbogenkontaktstück 5 angeordnet. Bei einem Schaltvorgang tritt an den Lichtbogenkontaktstücken 2 und 3 ein Lichtbogen auf . Aufgrund dieses Lichtbogens wird im Bereich der die beiden Lichtbogenkontaktstücke 2, 3 umgebenden Isolierstoffdüse 6 ein Lδschgas generiert. Dieses Löschgas strömt zu einem Teil aus der Iso- lierstoffdüse 6 in Richtung des feststehenden Lichtbogenkontaktstückes 3 ab. Das feststehende Lichtbogenkontaktstück 3 ist von einem rohrförmigen Kanal 7 umgeben. Zunächst strömt das Löschgas im Innern des rohrförmigen Kanals 7 von der durch die beiden Lichtbogenkontaktstücke 2,3 gebildeteThe figure shows an electrical switching device 1, namely a high-voltage circuit breaker in a schematic representation. The electrical switching device 1 is arranged within a housing, not shown, which is filled with an insulating gas. The electrical switching device 1 has a movable arcing contact piece 2 and a fixed arcing contact piece 3. A movable nominal current contact piece 4 and a fixed arcing contact piece 5 are arranged coaxially with the arcing contact piece 2 and the movable fixed contact piece 3 opposite it. During a switching process, an arc occurs at the arcing contact pieces 2 and 3. Because of this arc, an extinguishing gas is generated in the region of the insulating material nozzle 6 surrounding the two arcing contact pieces 2, 3. Some of this quenching gas flows out of the insulating material nozzle 6 in the direction of the fixed arcing contact piece 3. The fixed arcing contact piece 3 is surrounded by a tubular channel 7. First, the extinguishing gas flows in the interior of the tubular channel 7 from that formed by the two arcing contact pieces 2, 3
Schaltstrecke fort und wird gegen eine erste Strömungsumlenkeinrichtung 8 gelenkt. Die erste Strömungsumlenkeinrichtung 8 lenkt die LδschgasStrömung auf die Außenseite des rohrförmigen Kanals 7. Die erste Strömungsumlenkeinrichtung 8 ist Teil eines Traggehäuses 9. Das Traggehäuse 9 weist eine radialeSwitching distance continues and is directed against a first flow deflection device 8. The first flow deflection device 8 directs the extinguishing gas flow onto the outside of the tubular channel 7. The first flow deflection device 8 is part of a support housing 9. The support housing 9 has a radial one
Öffnung 10 auf. Die radiale Öffnung 10 ist ringförmig umlaufend ausgebildet. Die radiale Öffnung 10 ist mittels einer zweiten rohrförmigen Umlenkeinrichtung 11 abgedeckt. Zwischen der zweiten Umlenkeinrichtung 11 und der ersten Umlenkein- richtung 8 ist eine Ausströmöffnung 12 gebildet, durch welches das Löschgas austreten kann.Opening 10 on. The radial opening 10 is formed in an annular circumference. The radial opening 10 is covered by a second tubular deflection device 11. An outflow opening 12 is formed between the second deflecting device 11 and the first deflecting device 8, through which the extinguishing gas can escape.
Im Bereich der radialen Öffnung 10 ist im Strömungsweg des Löschgases eine rohrförmige massive Wandung 13 einer Kühlein- richtung angeordnet. Die rohrförmige massive Wandung 13 weist eine Vielzahl von Durchtrittsöffnungen 14a, b,c auf. An einem ersten Ende der rohrförmigen massiven Wandung 13 ist diese in einer Ringnut 15 gelagert. An dem zweiten Ende der rohrfδrmi- gen massiven Wandung 13 ist ein Rohrstutzen 16 angeordnet.A tubular solid wall 13 of a cooling device is arranged in the area of the radial opening 10 in the flow path of the extinguishing gas. The tubular solid wall 13 has a plurality of through openings 14a, b, c. At a first end of the tubular solid wall 13, it is supported in an annular groove 15. At the second end of the tubular massive pipe 13, a pipe socket 16 is arranged.
Der Rohrstutzen 16 wirkt als Fassungsarmatur und umgibt die rohrförmige massive Wandung 13 vollumf nglich. Der Rohrstutzen 16 weist einen radial nach innen gerichteten Anschlag 17 auf, welcher ein Aufschieben des Rohrstutzens 16 auf die rohrförmige massive Wandung 13 begrenzt. Gleichzeitig dient der Anschlag 17 als Anschlag für die Strömungsumlenkeinrichtung 8, welche den Rohrstutzen 16 und die rohrförmige massive Wandung 13 in die ortsfeste Ringnut 15 einpresst. Weiterhin ist an dem Rohrstutzen 16 radial nach außen ein umlaufender Bund 18 angeformt, welcher in eine in der Umlenkeinrichtung 11 befindliche Nut eingreift. Somit ist ein axiales Verschieben des Rohrstutzens 16 verhindert. Der Rohrstutzen 16 ist dabei in Richtung der Mitte der rohrförmigen massiven Wandung 13 weiter ausgedehnt als es zur Fassung der rohrförmigen massiven Wandung 13 erforderlich ist. Die zur Halterung notwendige Überdeckung ist in der Figur beispielsweise an der Tiefe der Ringnut 15 erkennbar. Durch die Erweiterung in Richtung der Mitte der rohrförmigen massiven Wandung 13 ist eine Durchtrittsöffnung 14c verschlossen.The pipe socket 16 acts as a fitting fitting and completely surrounds the tubular solid wall 13. The pipe socket 16 has a radially inwardly directed stop 17, which limits the sliding of the pipe socket 16 onto the tubular solid wall 13. At the same time, the stop 17 serves as a stop for the flow deflecting device 8, which presses the pipe socket 16 and the tubular solid wall 13 into the stationary annular groove 15. Furthermore, a circumferential collar 18 is integrally formed on the pipe socket 16, which engages in a groove in the deflection device 11. Axial displacement of the pipe socket 16 is thus prevented. The pipe socket 16 is extended further in the direction of the center of the tubular solid wall 13 than is necessary to mount the tubular solid wall 13. The overlap required for mounting can be seen in the figure, for example, by the depth of the annular groove 15. A through opening 14c is closed by the widening in the direction of the center of the tubular solid wall 13.
Durch einen Austausch des Rohrstutzens 16 gegen einen anderen Rohrstutzen mit einer größeren/kleineren Rohrstutzenlänge ist die Anzahl der verschließbaren Durchtrittsöffnungen variabel einstellbar. Dadurch ist die Kühlleistung der Kühleinrichtung veränderbar sowie die Strömung des Löschgases steuerbar.By exchanging the pipe socket 16 for another pipe socket with a larger / smaller pipe socket length, the number of closable through openings can be variably adjusted. As a result, the cooling capacity of the cooling device can be changed and the flow of the extinguishing gas can be controlled.
Die in der Figur gezeigte rohrförmige massive Wandung 13 kann vorteilhafterweise aus einem Lochblech gebildet sein. Dabei ist das Lochblech in eine Rohrform zu biegen, wobei sich die Enden des Lochbleches überlappen. Bei einer geringfügig größeren Wahl des Durchmessers der rohrförmigen massiven Wandung 13 gegenüber dem Durchmesser der Ringnut 15 sowie gegenüber dem Durchmesser des Rohrstutzens 16 ist die rohrförmige massive Wandung 13 elastisch selbsthaltend in die Ringnut 15 und den Rohrstutzen 16 einlegbar. The tubular solid wall 13 shown in the figure can advantageously be formed from a perforated plate. The perforated plate is to be bent into a tubular shape, the ends of the perforated plate overlapping. With a slightly larger choice of the diameter of the tubular solid wall 13 compared to the diameter of the annular groove 15 and opposite the diameter of the pipe socket 16, the tubular solid wall 13 can be inserted elastically self-holding in the annular groove 15 and the pipe socket 16.

Claims

Patentansprüche claims
1. Elektrisches Schaltgerät (1), welches im Zuge einer Ausschaltbewegung eine LöschgasStrömung hervorruft, mit einer Durchtrittsöffnungen (14a, b,c) für die Löschgasströmung aufweisenden massiven Wandung (13) einer Kühleinrichtung, d a d u r c h g e k e n n z e i c h n e t , dass zumindest eine der Durchtrittsöffnungen (14c) mittels einer lösbar mit der Kühleinrichtung verbundenen Fassungsarmatur (16) verschließbar ist.1.Electric switching device (1), which causes an extinguishing gas flow in the course of a switch-off movement, with a passage wall (13) of a cooling device for the extinguishing gas flow, characterized in that at least one of the passage openings (14c) by means of passage openings (14a, b, c) a socket fitting (16) detachably connected to the cooling device can be closed.
2. Elektrisches Schaltgerät (1) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Fassungsarmatur (16) die Kühleinrichtung zumindest teil- weise fixiert.2. The electrical switching device (1) according to claim 1, so that the mounting fitting (16) at least partially fixes the cooling device.
3. Elektrisches Schaltgerät (1) nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , dass die Fassungsarmatur (16) zusätzlich über den zur Fixierung der Kühleinrichtung nötigen Bereich hinaus ausgedehnt ist, um zumindest eine der Durchtrittsöffnungen (14c) zu verschließen.3. Electrical switching device (1) according to claim 2, d a d u r c h g e k e n n e e c i n e t that the socket fitting (16) is additionally extended beyond the area required for fixing the cooling device in order to close at least one of the passage openings (14c).
4. Elektrisches Schaltgerät (1) nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , dass die massive Wandung (13) rohrförmig ausgebildet ist.4. Electrical switching device (1) according to one of claims 1 to 3, d a d u r c h g e k e n n z e i c h n e t that the solid wall (13) is tubular.
5. Elektrisches Schaltgerät (1) nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t , dass die Fassungsarmatur (16) auf der Außenseite der rohrförmigen massiven Wandung (13) angeordnet ist. 5. Electrical switching device (1) according to claim 4, characterized in that the socket fitting (16) is arranged on the outside of the tubular solid wall (13).
6. Elektrisches Schaltgerät (1) nach einem der Ansprüche 4 oder 5, d a d u r c h g e k e n n z e i c h n e t , dass die Fassungsarmatur (16) die rohrförmige massive Wandung (13) an einem Ende in vollem Umfang umfasst.6. Electrical switching device (1) according to one of claims 4 or 5, d a d u r c h g e k e n z e i c h n e t that the socket fitting (16) completely encompasses the tubular solid wall (13) at one end.
7. Elektrisches Schaltgerät (1) nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t , dass die Fassungsarmatur (16) eine Endfassung für die rohrförmige massive Wandung (13) in Form eines Rohrstutzens ausbildet und dass die Fassungsarmatur (16) zu einem mittleren Abschnitt der rohrförmigen massive Wandung (13) weiter ausgedehnt ist, als für die mechanische Haltefunktion notwendig.7. Electrical switching device (1) according to claim 6, characterized in that the socket fitting (16) forms an end socket for the tubular solid wall (13) in the form of a pipe socket and that the socket fitting (16) to a central portion of the tubular solid wall ( 13) is wider than is necessary for the mechanical holding function.
8. Elektrisches Schaltgerät (1) nach einem der Ansprüche 1 bis 7, d a d u r c h g e k e n n z e i c h n e t , dass die Durchtrittsöffnungen (14a, b,c) aufweisende massive Wandung (13) durch ein Lochblech gebildet ist. 8. Electrical switching device (1) according to one of claims 1 to 7, d a d u r c h g e k e n z e i c h n e t that the through openings (14a, b, c) having solid wall (13) is formed by a perforated plate.
EP03735261A 2002-05-08 2003-04-10 Electric switching device with a cooling device Expired - Lifetime EP1502272B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10221576 2002-05-08
DE10221576A DE10221576B4 (en) 2002-05-08 2002-05-08 Electrical switching device with a cooling device
PCT/DE2003/001260 WO2003096366A1 (en) 2002-05-08 2003-04-10 Electric switching device with a cooling device

Publications (2)

Publication Number Publication Date
EP1502272A1 true EP1502272A1 (en) 2005-02-02
EP1502272B1 EP1502272B1 (en) 2005-11-23

Family

ID=29413839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03735261A Expired - Lifetime EP1502272B1 (en) 2002-05-08 2003-04-10 Electric switching device with a cooling device

Country Status (6)

Country Link
US (1) US20050150868A1 (en)
EP (1) EP1502272B1 (en)
CN (1) CN1293585C (en)
DE (2) DE10221576B4 (en)
RU (1) RU2309477C2 (en)
WO (1) WO2003096366A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE369614T1 (en) * 2004-06-07 2007-08-15 Abb Technology Ag CIRCUIT BREAKER
ATE458259T1 (en) 2005-09-26 2010-03-15 Abb Technology Ag HIGH VOLTAGE SWITCH WITH IMPROVED SWITCHING PERFORMANCE
FR2896083B1 (en) * 2006-01-06 2009-07-10 Areva T & D Sa EXHAUST GAS FOR CIRCUIT BREAKER
ATE508466T1 (en) 2006-03-14 2011-05-15 Abb Technology Ag SWITCH CHAMBER FOR A GAS INSULATED HIGH VOLTAGE SWITCH
EP1930929B2 (en) † 2006-12-06 2013-01-30 Abb Research Ltd. High-tension circuit breaker with a metal tank filled with dielectric gas
JP4902439B2 (en) * 2007-06-25 2012-03-21 株式会社日本Ａｅパワーシステムズ Puffer type gas circuit breaker
DE102009057703A1 (en) * 2009-12-04 2011-06-09 Siemens Aktiengesellschaft Circuit breaker arrangement
DE102011083593A1 (en) 2011-09-28 2013-03-28 Siemens Aktiengesellschaft Circuit-breaker interrupter unit
DE102011083588A1 (en) * 2011-09-28 2013-03-28 Siemens Aktiengesellschaft An arrangement comprising a circuit breaker breaker unit
JP2013179005A (en) * 2012-02-29 2013-09-09 Toshiba Corp Gas circuit breaker
FR2997222B1 (en) * 2012-10-19 2015-01-16 Alstom Technology Ltd DEVICE FOR ESTABLISHING AND / OR CUTTING CURRENT WITH PERMANENT CONTACTS WITH REDUCED WEAR
CN106030744B (en) * 2013-12-23 2019-07-02 Abb瑞士股份有限公司 Electrical switchgear
DE102014001730A1 (en) * 2014-02-08 2015-08-13 Ellenberger & Poensgen Gmbh switching system
FR3030868B1 (en) * 2014-12-19 2018-02-16 Alstom Technology Ltd CIRCUIT BREAKER EQUIPPED WITH PRESSURE GAS DRAIN VALVES IN EXHAUST VOLUMES
US9673006B2 (en) * 2015-01-23 2017-06-06 Alstom Technology Ltd Exhaust diffuser for a gas-insulated high voltage circuit breaker
EP3422381B1 (en) * 2017-06-29 2022-08-03 ABB Schweiz AG Gas-insulated load break switch and switchgear comprising a gas-insulated load break switch
EP3503151B1 (en) * 2017-12-20 2022-04-13 Hitachi Energy Switzerland AG Circuit breaker and method of performing a current breaking operation
US11798761B2 (en) * 2020-11-20 2023-10-24 Technologies Mindcore Inc. System for controlling and cooling gas of circuit breaker and method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328403A (en) * 1977-02-15 1982-05-04 Westinghouse Electric Corp. Single barrel puffer circuit interrupter
CH643087A5 (en) * 1979-11-30 1984-05-15 Sprecher & Schuh Ag Gas-blast circuit breaker
DE3275041D1 (en) * 1981-09-30 1987-02-12 Sprecher Energie Ag Compressed-gas circuit breaker
DE3333472A1 (en) * 1983-09-16 1985-04-11 Jacob Plein-Wagner Söhne Steinzeugwarenfabrik KG, 5522 Speicher Air-exhaust gas chimney
DE3812364A1 (en) * 1988-04-14 1989-10-26 Olaf Dipl Biol Ermisch Process for the microbiological treatment of a contaminated soil, and device for introducing the microorganism into the contaminated soil
DE4333277C2 (en) * 1993-09-24 1995-07-06 Siemens Ag High-voltage circuit breaker with a cooling device for cooling the extinguishing gas
DE9314779U1 (en) * 1993-09-24 1993-11-25 Siemens Ag High-voltage circuit breaker with a cooling device for cooling the extinguishing gas
FR2732157B1 (en) * 1995-03-22 1997-05-09 Schneider Electric Sa GAS CIRCUIT BREAKER HAVING A SELF-EXPANSION AND ROTATING ARC CHAMBER
DE19928080C5 (en) * 1999-06-11 2006-11-16 Siemens Ag High voltage circuit breaker with a discharge channel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03096366A1 *

Also Published As

Publication number Publication date
US20050150868A1 (en) 2005-07-14
CN1650380A (en) 2005-08-03
DE10221576A1 (en) 2003-12-04
WO2003096366A1 (en) 2003-11-20
EP1502272B1 (en) 2005-11-23
RU2004135812A (en) 2005-08-27
DE10221576B4 (en) 2006-06-01
CN1293585C (en) 2007-01-03
RU2309477C2 (en) 2007-10-27
DE50301755D1 (en) 2005-12-29

Similar Documents

Publication Publication Date Title
DE10221576B4 (en) Electrical switching device with a cooling device
EP0951039B1 (en) Power switch
EP2740137B1 (en) Arrangement comprising a circuit breaker interrupter unit
DE10221580B3 (en) Circuit breaker unit of a high voltage circuit breaker
EP2188823B1 (en) Insulating switching rod
EP1403891A1 (en) Circuit breaker
WO2013120732A1 (en) Switchgear arrangement
EP0016983B1 (en) Puffer-type gas circuit breaker
WO2006081697A1 (en) Nozzle fastening system for electric circuit-breakers
EP1306868A1 (en) High voltage power circuit breaker with insulating nozzle
EP1290707A1 (en) Vacuum switch tubes
DE102008039813A1 (en) High voltage circuit breaker with one switching path
WO2001033594A1 (en) Compressed gas-blast circuit breaker
EP0554686B1 (en) Gas blast switch
DE102006056656A1 (en) Switch module for medium voltage electrical switchgear, has metallic housing, which has cylindrical base body with longitudinal axis and right angled outlet, that sticks out from base body
BE1014553A3 (en) CONTACT ARRANGEMENT FOR lubricants and PRONGS ELECTRICAL DEVICES AND EQUIPMENT, AND IN PARTICULAR THE ELECTRICAL ENERGIETECHNICK, as well as tax and instrumentation.
DE2741022A1 (en) GAS SWITCH WITH SELF-EXHAUST
DE3904147C2 (en)
DE4200896A1 (en) HV power switch with compression cylinder - has screen which surrounds constant current contact on metal cylinder cover when switched on.
EP0734580B1 (en) High-voltage power switch with a field electrode
DE4402121A1 (en) Electrical high-voltage circuit breaker with a boiler room and a compression device
DE19815152C1 (en) Multi-pole high-voltage circuit breaker
EP2801101B1 (en) Switchgear arrangement
DE102011006013B3 (en) Vacuum interrupter and switch pole
DE1955148A1 (en) Gas pressure switch

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): CH DE FR GB LI SE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051123

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50301755

Country of ref document: DE

Date of ref document: 20051229

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20051123

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060824

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: SIEMENS SCHWEIZ AG;INTELLECTUAL PROPERTY FREILAGERSTRASSE 40;8047 ZUERICH (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20110711

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120618

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20130411

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20130430

Year of fee payment: 11

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130430

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131101

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50301755

Country of ref document: DE

Effective date: 20131101

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20141231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140411

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140430