EP2573783B1 - Arcing chamber device for electromagnetic switching devices - Google Patents

Arcing chamber device for electromagnetic switching devices Download PDF

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Publication number
EP2573783B1
EP2573783B1 EP11182095.7A EP11182095A EP2573783B1 EP 2573783 B1 EP2573783 B1 EP 2573783B1 EP 11182095 A EP11182095 A EP 11182095A EP 2573783 B1 EP2573783 B1 EP 2573783B1
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EP
European Patent Office
Prior art keywords
panel insert
resilient
arc
insert
quenching chamber
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
EP11182095.7A
Other languages
German (de)
French (fr)
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EP2573783A1 (en
Inventor
Bernhard Rösch
Alexander Spies
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Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP11182095.7A priority Critical patent/EP2573783B1/en
Priority to BR102012023813A priority patent/BR102012023813B8/en
Priority to CN201210355250.8A priority patent/CN103117197B/en
Priority to KR1020120105178A priority patent/KR101626390B1/en
Publication of EP2573783A1 publication Critical patent/EP2573783A1/en
Application granted granted Critical
Publication of EP2573783B1 publication Critical patent/EP2573783B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to a Löschhuntvorraum for electromagnetic switching devices, in particular for circuit breaker with a splitter stack and an adjacent Blendenindi, and with a contact slide device with movable contact pieces, which are positioned opposite to Festschalt congressen.
  • Circuit-breakers in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.
  • switching device with splitter stack and aperture insert is in the EP-A-1298687 disclosed.
  • the task of the circuit breaker is to protect downstream systems, in particular three-phase motors, from damage caused by overload or short circuit.
  • the circuit breaker should switch off these currents in conjunction with the network protection devices. If gas is between the two poles, it is ionized by the flashover with a correspondingly high voltage difference between the poles, and a self-sustaining gas discharge is formed, which is also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch.
  • circuit breakers are designed so that the arc produced when opening the switch contacts quickly and without damage of the switch cleared and thus the current flow is interrupted.
  • a particular problem with circuit breakers with high switching capacity, especially with up to 100 kA at a rated current up to 80 A is that with such a large short circuits, the loads on the chamber walls, that is, in particular on the lower part of the circuit breaker, due to the large Pressure development is very high.
  • the housing walls can bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.
  • Circuit breakers with a high switching capacity are subject to a high chamber pressure of up to 7.5 bar in the event of short circuits, which means an equally high plasma output. Even gap widths of 0.1 to 0.2 mm are sufficient to allow plasma to escape from the given paths. This also applies to the splitter stack and the panel insert, which lie against each other. Another problem with high switching operations is the position of diaphragm insert and splitter stack to each other. It must be ensured that both elements are in such a way that the paths for plasma exchange do not overlap one another. In addition, the cross-sectional transition between splitter stack and Blendeninate previously abruptly from a large cross section to a small. This results in turbulence, which in turn adversely affect the arc.
  • the object of the present invention is to provide a quenching chamber device having improved high-speed switching characteristics.
  • the panel insert according to the invention is preferably parallelepiped-shaped with two parallel side walls and two side walls connecting the two side walls.
  • the aperture insert has an upper side and a lower side.
  • a cap is formed, which is formed for example for receiving a Festschalt ceremoniess.
  • spacers are arranged, which protrude from the other two side walls arranged parallel to each other and allow optimal positioning of the aperture insert including quenching plates in the switching device.
  • slits lying parallel to one another are preferably arranged, which form the channels for an ordered plasma discharge.
  • two resilient contours are preferably formed on the side wall with slots which run down parallel to the slots on the side wall.
  • the resilient contours are preferably L-shaped or wedge-shaped with two legs, wherein the one leg is formed as an extension of the side wall and the other leg is at 90 ° to the first leg or to the side wall.
  • the resilient contours are preferably arranged to the left and right of the slots and divided into preferably three subregions, wherein each two subregions are interconnected by a third portion, so that overall results in a threading form or a wedge shape for a resilient contour.
  • the resilient contours 12, 13 on the panel insert 1 cause the panel insert 1 is pressed firmly between the housing wall of the electromagnetic switching device and the splitter stack.
  • panel insert and splitter stack are designed to latch together.
  • a detent between the aperture insert and splitter stack two functions are fulfilled. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours.
  • the detent may be in the form of locking knobs and recess.
  • the invention provides that from the panel insert to the quenching plates, a flowing cross-sectional transition is formed.
  • the fluently formed cross-sectional transition means that turbulences are avoided by this aerodynamic design. There is a clean purging of the plasma and not the usual turbulence scattered blow, whereby the risk of rollover between the individual phases increases.
  • the extinguishing chamber device for electromagnetic switching devices, in particular for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching capacities with a high chamber internal pressure are possible.
  • the structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack. As a result, a flashover between two adjacent splitter plate channels is prevented.
  • Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.
  • Fig. 1 shows a first embodiment of a panel insert 1 according to the invention, which is preferably cuboidal, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5.
  • the panel insert 1 has a top 6 and a bottom 7 on.
  • an attachment 8 is formed, which is formed for example for receiving a Festschalt Federationes.
  • the resilient contours 12, 13 are preferably L-shaped with two legs 14, 15, wherein the leg 14 is formed as an extension of the side wall 4 and the leg 15 is at 90 ° to the leg 14 and the side wall 4.
  • the resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three subregions 16, 17, 18, wherein the subregions 16 and 18 via the portion 17 with each other are connected and overall preferably a threading form for a resilient contour 12, 13 results.
  • the resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.
  • Fig. 2 is a second embodiment of an aperture insert 1 according to the invention shown with detent.
  • the side wall 5 is shown with the slots 11 forming the channels for an ordered plasma exchange.
  • a locking knob 19 is shown on the side wall 5 in the vicinity of the top 6 with the attachment 8 .
  • the locking knob 19 serves to connect the panel insert 1 latching with the splitter stack.
  • the detent ensures two functions. On the one hand, the position of the two parts of the panel insert 1 and splitter stack is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the locking knobs 19 are also from the Fig. 3 showing a front view according to the side wall 5.
  • Fig. 4 an arrangement of an aperture insert 1 according to the invention and an adjacent splitter plate 20 is shown.
  • the dotted surface 21 represents the previous cross-sectional transition, which led to turbulence 23 through the constriction 22 and allowed no defined plasma blowing.
  • the turbulence 23 creates a scattered discharge of the plasma, which increases the risk of rollover between the individual phases.
  • the constriction 22 is dispensed with, thereby achieving a flowing cross-sectional transition which avoids turbulences due to this aerodynamic design. There is thus a clean purging of the plasma.
  • Fig. 5 the perspective view of the flow-optimized Ausblaskanäle 24 forth.
  • Fig. 5 the perspective view of the flow-optimized Ausblaskanäle 24 forth.
  • FIG. 6 shows a further embodiment of a panel insert 1 according to the invention, which is also preferably cuboid, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5.
  • the panel insert 1 has a top 6 and a Bottom 7 on.
  • At the top 6 of the attachment 8 is formed, which is formed for example for receiving a Festschalt Federationes.
  • the resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three partial areas 16, 17, 18, wherein the partial areas 16 and 18 are connected to each other via the portion 17 and a total preferably a wedge shape for each one resilient contour 12, 13 results, which tapers towards the bottom 7.
  • the resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.
  • the extinguishing chamber device for electromagnetic switching devices, especially for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching performance with a high chamber internal pressure are possible.
  • the structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always fixed between Housing wall of the electromagnetic switching device and the splitter stack is pressed. As a result, a flashover between two adjacent splitter plate channels is prevented.
  • Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Diaphragms And Bellows (AREA)

Description

Löschkammervorrichtung für elektromagnetische Schaltgeräte Die Erfindung betrifft eine Löschkammervorrichtung für elektromagnetische Schaltgeräte, insbesondere für Leistungsschalter mit einem Löschblechpaket und einem daran angrenzenden Blendeneinsatz, sowie mit einer Kontaktschiebervorrichtung mit beweglichen Schaltstücken, die gegenüber liegend zu Festschaltstücken positioniert sind.The invention relates to a Löschkammervorrichtung for electromagnetic switching devices, in particular for circuit breaker with a splitter stack and an adjacent Blendeneinsatz, and with a contact slide device with movable contact pieces, which are positioned opposite to Festschaltstücken.

Leistungsschalter, insbesondere Niederspannungsleistungsschalter, sind im Kurzschlussfall elektromagnetische Selbstschalter. Ihre Arbeitsweise entspricht prinzipiell der Arbeitsweise von Leitungsschutzschaltern. Sie sind meist mit einem thermischen und einem magnetischen Auslöser ausgestattet und besitzen somit die gleichen konstruktiven Elemente wie Leitungsschutzschalter. Allerdings sind sie für größere Bemessungsströme konstruiert, außerdem sind die Auslöser von Leistungsschaltern, anders als beim Leitungsschutzschalter, teilweise separat einstellbar. Im Niederspannungsbereich werden die Schalter auch als Motorschutzschalter eingesetzt.Circuit-breakers, in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.

Ein Beispiel von Schaltgerät mit Löschblechpaket und Blendeneinsatz wird in der EP-A-1298687 offenbart.An example of switching device with splitter stack and aperture insert is in the EP-A-1298687 disclosed.

Die Aufgabe des Leistungsschalters besteht darin, nachgeordnete Anlagen, insbesondere Drehstrommotoren, vor Schäden durch Überlast oder Kurzschluss zu schützen. Dabei soll der Leistungsschalter diese Ströme in Verbindung mit den Einrichtungen des Netzschutzes ausschalten. Befindet sich Gas zwischen den beiden Polen, wird es bei entsprechend hoher Spannungsdifferenz zwischen den Polen durch den Überschlag ionisiert, und es bildet sich eine sich selbst erhaltende Gasentladung, die auch als Lichtbogen bezeichnet wird. Dieses Plasma leitet nicht nur weiterhin Strom, sondern reduziert auch die Lebensdauer des Bauteils, bei starken Strömen kann es den Schalter sogar zerstören. Im Gegensatz zu Trennern sind Leistungsschalter so konstruiert, dass der beim Öffnen der Schaltkontakte entstehende Lichtbogen schnell und ohne Beschädigung des Schalters gelöscht und damit der Stromfluss unterbrochen wird.The task of the circuit breaker is to protect downstream systems, in particular three-phase motors, from damage caused by overload or short circuit. The circuit breaker should switch off these currents in conjunction with the network protection devices. If gas is between the two poles, it is ionized by the flashover with a correspondingly high voltage difference between the poles, and a self-sustaining gas discharge is formed, which is also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch. Unlike disconnectors, circuit breakers are designed so that the arc produced when opening the switch contacts quickly and without damage of the switch cleared and thus the current flow is interrupted.

Ein besonderes Problem bei Leistungsschaltern mit hohem Schaltvermögen, insbesondere mit bis zu 100 kA bei einem Nennstrom bis zu 80 A besteht darin, dass bei solch großen Kurzschlüssen die Belastungen auf die Kammerwände, das heißt, insbesondere auf das Unterteil des Leistungsschalters, auf Grund der großen Druckentwicklung sehr hoch ist. Die Gehäusewände können sich bei solchen Auslösevorgängen nach außen biegen oder zu einem Einriß im Oberteil des Leistungsschalters führen. Im schlimmsten Fall werden Teile des Oberteils weggebrochen.A particular problem with circuit breakers with high switching capacity, especially with up to 100 kA at a rated current up to 80 A is that with such a large short circuits, the loads on the chamber walls, that is, in particular on the lower part of the circuit breaker, due to the large Pressure development is very high. The housing walls can bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.

Leistungsschalter mit einem hohen Schaltvermögen unterliegen bei Kurzschlüssen einem hohen Kammerdruck von bis zu 7,5 bar, womit ein ebenso hoher Plasmaausstoß verbunden ist. Schon Spaltbreiten von 0,1 bis 0,2 mm reichen aus, damit Plasma aus den vorgegebenen Bahnen entweichen kann. Dies gilt auch für das Löschblechpaket und den Blendeneinsatz, die aneinander liegen. Ein weiteres Problem bei hohen Schaltvorgängen besteht in der Position von Blendeneinsatz und Löschblechpaket zueinander. Es muss sichergestellt sein, dass beide Elemente so zueinander stehen, dass sich die Bahnen für den Plasmaaustausch nicht gegenseitig überlappen. Außerdem erfolgt der Querschnittsübergang zwischen Löschblechpaket und Blendeneinsatz bisher schlagartig von einem großen Querschnitt auf einen kleinen. Dies hat Verwirbelungen zur Folge, die wiederum den Lichtbogen negativ beeinflussen.Circuit breakers with a high switching capacity are subject to a high chamber pressure of up to 7.5 bar in the event of short circuits, which means an equally high plasma output. Even gap widths of 0.1 to 0.2 mm are sufficient to allow plasma to escape from the given paths. This also applies to the splitter stack and the panel insert, which lie against each other. Another problem with high switching operations is the position of diaphragm insert and splitter stack to each other. It must be ensured that both elements are in such a way that the paths for plasma exchange do not overlap one another. In addition, the cross-sectional transition between splitter stack and Blendeneinsatz previously abruptly from a large cross section to a small. This results in turbulence, which in turn adversely affect the arc.

Demgemäß besteht die Aufgabe der vorliegenden Erfindung darin, eine Löschkammervorrichtung zu schaffen, die verbesserte Eigenschaften bei hohen Schaltvorgängen aufweist.Accordingly, the object of the present invention is to provide a quenching chamber device having improved high-speed switching characteristics.

Diese Aufgabe wird durch eine Löschkammervorrichtung mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Aus- und der eingesetzt werden können, sind der Gegenstand der abhängigen Ansprüche.This object is achieved by a quenching chamber device having the features of patent claim 1. Advantageous education and can be used are the subject of the dependent claims.

Erfindungsgemäß wird diese Aufgabe durch eine Löschkammervorrichtung nach Anspruch 1 gelöst.According to the invention this object is achieved by a quenching chamber device according to claim 1.

Dabei ist eine Einpressung in allen Toleranzlagen bei gleichzeitiger Montierbarkeit gewährleistet. Ein Überschlag zwischen zwei benachbarten Löschblechkanälen wird durch die federnde Kontur verhindert.In this case, a press-fit in all tolerance positions is guaranteed with simultaneous assembly. A flashover between two adjacent splitter plate channels is prevented by the resilient contour.

Der erfindungsgemäße Blendeneinsatz ist vorzugsweise quaderförmig ausgebildet mit zwei sich parallel gegenüber liegenden Seitenwänden und zwei die beiden Seitenwände verbindenden Seitenwänden. Zudem weist der Blendeneinsatz eine Oberseite sowie eine Unterseite auf. An der Oberseite ist ein Aufsatz angeformt, der beispielsweise zur Aufnahme eines Festschaltstücks ausgebildet ist.The panel insert according to the invention is preferably parallelepiped-shaped with two parallel side walls and two side walls connecting the two side walls. In addition, the aperture insert has an upper side and a lower side. At the top of a cap is formed, which is formed for example for receiving a Festschaltstücks.

An zwei parallel zueinander ausgebildeten Seitenwänden sind Abstandshalter angeordnet, die gegenüber den anderen beiden parallel zueinander angeordneten Seitenwänden hervorstehen und eine optimale Positionierung des Blendeneinsatzes inklusive Löschblechen im Schaltgerät ermöglichen. An einer Seitenwand sind vorzugsweise parallel untereinander liegende Schlitze angeordnet, die die Kanäle bilden für einen geordneten Plasmaausstoß. Zudem sind an der Seitenwand mit Schlitzen vorzugsweise zwei federnde Konturen ausgebildet, die parallel zu den Schlitzen an der Seitenwand herunter laufen.At two mutually parallel side walls spacers are arranged, which protrude from the other two side walls arranged parallel to each other and allow optimal positioning of the aperture insert including quenching plates in the switching device. On a side wall, slits lying parallel to one another are preferably arranged, which form the channels for an ordered plasma discharge. In addition, two resilient contours are preferably formed on the side wall with slots which run down parallel to the slots on the side wall.

Die federnden Konturen sind vorzugsweise L-förmig oder keilförmig ausgebildet mit zwei Schenkeln, wobei der eine Schenkel als Fortsatz der Seitenwand ausgebildet ist und der andere Schenkel im 90° Winkel zum ersten Schenkel beziehungsweise zur Seitenwand steht. Die federnden Konturen sind vorzugsweise links und rechts von den Schlitzen angeordnet und in vorzugsweise drei Teilbereiche unterteilt, wobei jeweils zwei Teilbereiche durch einen dritten Teilbereich miteinander verbunden sind, so dass sich insgesamt eine Einfädel-Form oder eine Keilform für eine federnde Kontur ergibt. Die federnden Konturen 12, 13 am Blendeneinsatz 1 führen dazu, dass der Blendeneinsatz 1 fest zwischen der Gehäusewand des elektromagnetischen Schaltgeräts und dem Löschblechpaket eingepresst ist.The resilient contours are preferably L-shaped or wedge-shaped with two legs, wherein the one leg is formed as an extension of the side wall and the other leg is at 90 ° to the first leg or to the side wall. The resilient contours are preferably arranged to the left and right of the slots and divided into preferably three subregions, wherein each two subregions are interconnected by a third portion, so that overall results in a threading form or a wedge shape for a resilient contour. The resilient contours 12, 13 on the panel insert 1 cause the panel insert 1 is pressed firmly between the housing wall of the electromagnetic switching device and the splitter stack.

In einer weiteren Ausführungsform des erfindungsgemäßen Blendeneinsatzes ist vorgesehen, dass Blendeneinsatz und Löschblechpaket miteinander verrastend ausgebildet sind. Durch eine Rastung zwischen Blendeneinsatz und Löschblechpaket werden zwei Funktionen erfüllt. Zum Einen wird die Position der beiden Teile zueinander fixiert, so dass es zu keiner Überlappung der Schlitzkonturen kommt. Zum Anderen erfolgt durch die Rastung eine eindeutige Rückmeldung während des Montageprozesses und zwar in der Form, dass der Blendeneinsatz ganz eingedrückt ist. Die Rastung kann in Form von Rastnoppen und Ausnehmung ausgebildet sein.In a further embodiment of the panel insert according to the invention, it is provided that panel insert and splitter stack are designed to latch together. By a detent between the aperture insert and splitter stack two functions are fulfilled. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, by the detent a clear feedback during the assembly process and in the form that the panel insert is completely depressed. The detent may be in the form of locking knobs and recess.

In einem weiteren Ausführungsbeispiel ist erfindungsgemäß vorgesehen, dass vom Blendeneinsatz zu den Löschblechen ein fließender Querschnittsübergang ausgebildet ist. Der fließend ausgebildete Querschnittsübergang führt dazu, dass Verwirbelungen durch diese strömungsgünstige Gestaltung vermieden werden. Es erfolgt eine saubere Ausblasung des Plasmas und nicht die bei Verwirbelungen übliche verstreute Ausblasung, wodurch die Überschlagsgefahr zwischen den einzelnen Phasen steigt.In a further embodiment, the invention provides that from the panel insert to the quenching plates, a flowing cross-sectional transition is formed. The fluently formed cross-sectional transition means that turbulences are avoided by this aerodynamic design. There is a clean purging of the plasma and not the usual turbulence scattered blow, whereby the risk of rollover between the individual phases increases.

Die erfindungsgemäße Löschkammervorrichtung für elektromagnetische Schaltgeräte, insbesondere für Leistungsschalter, zeichnet sich dadurch aus, dass durch bauliche Veränderungen am Blendeneinsatz auch hohe Schaltleistungen mit einem hohen Kammerinnendruck möglich sind. Zu den baulichen Veränderungen gehören federnde Konturen am Blendeneinsatz, die derart ausgebildet sind, dass der Blendeneinsatz immer fest zwischen Gehäusewand des elektromagnetischen Schaltgerätes und dem Löschblechpaket eingepresst ist. Dadurch wird ein Überschlag zwischen zwei benachbarten Löschblechkanälen verhindert. Eine weitere bauliche Veränderung besteht in der Rastung zwischen Blendeneinsatz und Löschblechpaket, die zwei Funktionen sicherstellt. Zum Einen wird die Position der beiden Teile zueinander fixiert, so dass es zu keiner Überlappung der Schlitzkonturen kommt. Zum Anderen erfolgt durch die Rastung eine eindeutige Rückmeldung während des Montageprozesses. Die dritte bauliche Maßnahme am Blendeneinsatz besteht darin, dass der Querschnittsübergang fließend gestaltet wird, so dass Verwirbelungen durch diese strömungsgünstige Gestaltung vermieden werden. Es erfolgt somit eine saubere Ausblasung des Plasmas.The extinguishing chamber device according to the invention for electromagnetic switching devices, in particular for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching capacities with a high chamber internal pressure are possible. The structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack. As a result, a flashover between two adjacent splitter plate channels is prevented. Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process. The third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.

Weiter Vorteile und Ausführungen der Erfindung werden nachfolgend anhand von Ausführungsbeispielen sowie anhand der Zeichnung erläutert.Further advantages and embodiments of the invention will be explained below with reference to embodiments and with reference to the drawing.

Dabei zeigen schematisch:

  • Fig. 1 in einer perspektivischen Darstellung ein erstes Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatz;
  • Fig. 2 in einer perspektivischen Schnittdarstellung ein zweites Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatzes mit Rastung;
  • Fig. 3 in einer perspektivischen Darstellung den erfindungsgemäßen Blendeneinsatz nach Fig. 2 mit Rastungen in der Innenansicht;
  • Fig. 4 in einer Schnittdarstellung die Draufsicht auf eine Anordnung aus Löschblech und Blendeneinsatz;
  • Fig. 5 in einer perspektivischen Schnittdarstellung den Blendeneinsatz nach Fig. 4 mit einem strömungsgünstig ausgebildeten Kanal;
  • Fig. 6 in einer perspektivischen Darstellung ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatz.
Here are shown schematically:
  • Fig. 1 in a perspective view of a first embodiment of a panel insert according to the invention;
  • Fig. 2 in a perspective sectional view of a second embodiment of a panel insert according to the invention with detent;
  • Fig. 3 in a perspective view of the panel insert according to the invention Fig. 2 with detents in the interior view;
  • Fig. 4 in a sectional view, the top view of an arrangement of splitter plate and panel insert;
  • Fig. 5 in a perspective sectional view of the panel insert Fig. 4 with a streamlined channel formed;
  • Fig. 6 in a perspective view of another embodiment of a panel insert according to the invention.

Fig. 1 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatz 1, der vorzugsweise quaderförmig ausgebildet ist, mit zwei sich parallel gegenüber liegenden Seitenwänden 2, 3 und zwei die beiden Seitenwände 2, 3 verbindenden Seitenwände 4, 5. Zudem weist der Blendeneinsatz 1 eine Oberseite 6 sowie eine Unterseite 7 auf. An der Oberseite 6 ist ein Aufsatz 8 angeformt, der beispielsweise zur Aufnahme eines Festschaltstückes ausgebildet ist. Fig. 1 shows a first embodiment of a panel insert 1 according to the invention, which is preferably cuboidal, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5. In addition, the panel insert 1 has a top 6 and a bottom 7 on. At the top 6 an attachment 8 is formed, which is formed for example for receiving a Festschaltstückes.

An den Seitenwänden 4, 5 sind Abstandswände 9, 10 angeordnet, die gegenüber den Seitenwänden 2, 3 hervorstehen und eine optimale Positionierung des Blendeneinsatzes 1 inklusive Löschblechen im Schaltgerät ermöglichen. An der Seitenwand 4 sind vorzugsweise parallel untereinander liegende Schlitze 11 angeordnet, die die Kanäle bilden für einen geordneten Plasmaausstoß. Zudem sind an der Seitenwand 4 federnde Konturen 12, 13 ausgebildet, die parallel zu den Schlitzen 11 an der Seitenwand 4 herunter laufen.On the side walls 4, 5 distance walls 9, 10 are arranged, which protrude from the side walls 2, 3 and allow optimal positioning of the panel insert 1 including quenching plates in the switching device. On the side wall 4, preferably parallel slits 11 are arranged, which form the channels for an ordered plasma discharge. In addition, on the side wall 4 resilient contours 12, 13 are formed, which run parallel to the slots 11 on the side wall 4 down.

Die federnden Konturen 12, 13 sind vorzugsweise L-förmig ausgebildet mit zwei Schenkeln 14, 15, wobei der Schenkel 14 als Fortsatz der Seitenwand 4 ausgebildet ist und der Schenkel 15 im 90° Winkel zum Schenkel 14 beziehungsweise zur Seitenwand 4 steht. Die federnden Konturen 12, 13 sind vorzugsweise links und rechts von den Schlitzen 11 angeordnet und in vorzugsweise drei Teilbereiche 16, 17, 18 unterteilt, wobei die Teilbereiche 16 und 18 über den Teilbereich 17 miteinander verbunden sind und sich insgesamt vorzugsweise eine Einfädel-Form für eine federnde Kontur 12, 13 ergibt. Die federnden Konturen 12, 13 am Blendeneinsatz führen dazu, dass der Blendeneinsatz 1 immer fest zwischen der Gehäusewand des elektromagnetischen Schaltgeräts und dem Löschblechpaket eingepresst ist.The resilient contours 12, 13 are preferably L-shaped with two legs 14, 15, wherein the leg 14 is formed as an extension of the side wall 4 and the leg 15 is at 90 ° to the leg 14 and the side wall 4. The resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three subregions 16, 17, 18, wherein the subregions 16 and 18 via the portion 17 with each other are connected and overall preferably a threading form for a resilient contour 12, 13 results. The resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.

In Fig. 2 ist ein zweites Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatzes 1 mit Rastung dargestellt. In dieser perspektivischen Schnittdarstellung ist die Seitenwand 5 mit den Schlitzen 11 dargestellt, die die Kanäle bilden für einen geordneten Plasmaaustausch. An der Seitenwand 5 in der Nähe der Oberseite 6 mit dem Aufsatz 8 ist eine Rastnoppe 19 gezeigt. Die Rastnoppe 19 dient dazu, den Blendeneinsatz 1 mit dem Löschblechpaket rastend zu verbinden. Durch die Rastung werden zwei Funktionen sichergestellt. Zum Einen wird die Position der beiden Teile aus Blendeneinsatz 1 und Löschblechpaket zueinander fixiert, so dass es zu keiner Überlappung der Schlitzkonturen kommt. Zum Anderen erfolgt durch die Rastung eine eindeutige Rückmeldung während des Montageprozesses. Die Rastnoppen 19 gehen auch aus der Fig. 3 hervor, die eine Ansicht von vorn gemäß der Seitenwand 5 zeigt.In Fig. 2 is a second embodiment of an aperture insert 1 according to the invention shown with detent. In this perspective sectional view, the side wall 5 is shown with the slots 11 forming the channels for an ordered plasma exchange. On the side wall 5 in the vicinity of the top 6 with the attachment 8 a locking knob 19 is shown. The locking knob 19 serves to connect the panel insert 1 latching with the splitter stack. The detent ensures two functions. On the one hand, the position of the two parts of the panel insert 1 and splitter stack is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process. The locking knobs 19 are also from the Fig. 3 showing a front view according to the side wall 5.

In Fig. 4 ist eine Anordnung aus einem erfindungsgemäßen Blendeneinsatz 1 und einem angrenzenden Löschblech 20 gezeigt. Die gepunktete Fläche 21 stellt den bisherigen Querschnittsübergang dar, der durch die Verengung 22 zu Verwirbelungen 23 führte und keine definierte Plasmaausblasung zuließ. Die Verwirbelung 23 erzeugt eher eine zerstreute Ausblasung des Plasmas, wodurch die Überschlagsgefahr zwischen den einzelnen Phasen steigt. Bei dem hier vorgestellten erfindungsgemäßen Blendeneinsatz 1 wird auf die Verengung 22 verzichtet und dadurch ein fließender Querschnittsübergang erreicht, der Verwirbelungen durch diese strömungsgünstige Gestaltung vermeidet. Es erfolgt somit eine saubere Ausblasung des Plasmas. Dazu geht aus Fig. 5 die perspektivische Darstellung der strömungsoptimierten Ausblaskanäle 24 hervor. Fig. 6 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Blendeneinsatz 1, der ebenfalls vorzugsweise quaderförmig ausgebildet ist, mit zwei sich parallel gegenüber liegenden Seitenwänden 2, 3 und zwei die beiden Seitenwände 2, 3 verbindenden Seitenwände 4, 5. Zudem weist der Blendeneinsatz 1 eine Oberseite 6 sowie eine Unterseite 7 auf. An der Oberseite 6 ist der Aufsatz 8 angeformt, der beispielsweise zur Aufnahme eines Festschaltstückes ausgebildet ist.In Fig. 4 an arrangement of an aperture insert 1 according to the invention and an adjacent splitter plate 20 is shown. The dotted surface 21 represents the previous cross-sectional transition, which led to turbulence 23 through the constriction 22 and allowed no defined plasma blowing. The turbulence 23 creates a scattered discharge of the plasma, which increases the risk of rollover between the individual phases. In the diaphragm insert 1 according to the invention presented here, the constriction 22 is dispensed with, thereby achieving a flowing cross-sectional transition which avoids turbulences due to this aerodynamic design. There is thus a clean purging of the plasma. This goes out Fig. 5 the perspective view of the flow-optimized Ausblaskanäle 24 forth. Fig. 6 shows a further embodiment of a panel insert 1 according to the invention, which is also preferably cuboid, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5. In addition, the panel insert 1 has a top 6 and a Bottom 7 on. At the top 6 of the attachment 8 is formed, which is formed for example for receiving a Festschaltstückes.

An den Seitenwänden 4, 5 sind Abstandswände 9, 10 angeordnet, die gegenüber den Seitenwänden 2, 3 hervorstehen und eine optimale Positionierung des Blendeneinsatzes 1 inklusive Löschblechen im Schaltgerät ermöglichen. An der Seitenwand 4 sind vorzugsweise parallel untereinander liegende Schlitze 11 angeordnet, die die Kanäle bilden für einen geordneten Plasmaausstoß. Zudem sind an der Seitenwand 4 die federnden Konturen 12, 13 ausgebildet, die parallel zu den Schlitzen 11 an der Seitenwand 4 herunter laufen.On the side walls 4, 5 distance walls 9, 10 are arranged, which protrude from the side walls 2, 3 and allow optimal positioning of the panel insert 1 including quenching plates in the switching device. On the side wall 4, preferably parallel slits 11 are arranged, which form the channels for an ordered plasma discharge. In addition, on the side wall 4, the resilient contours 12, 13 are formed, which run parallel to the slots 11 on the side wall 4 down.

Die federnden Konturen 12, 13 sind vorzugsweise links und rechts von den Schlitzen 11 angeordnet und in vorzugsweise drei Teilbereiche 16, 17, 18 unterteilt, wobei die Teilbereiche 16 und 18 über den Teilbereich 17 miteinander verbunden sind und sich insgesamt vorzugsweise eine Keilform für jeweils eine federnde Kontur 12, 13 ergibt, die sich zur Unterseite 7 hin verjüngt. Die federnden Konturen 12, 13 am Blendeneinsatz führen dazu, dass der Blendeneinsatz 1 immer fest zwischen der Gehäusewand des elektromagnetischen Schaltgeräts und dem Löschblechpaket eingepresst ist.The resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three partial areas 16, 17, 18, wherein the partial areas 16 and 18 are connected to each other via the portion 17 and a total preferably a wedge shape for each one resilient contour 12, 13 results, which tapers towards the bottom 7. The resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.

Die erfindungsgemäße Löschkammervorrichtung für elektromagnetische Schaltgeräte, insbesondere für Leistungsschalter, zeichnet sich dadurch aus, dass durch bauliche Veränderungen am Blendeneinsatz auch hohe Schaltleistungen mit einem hohen Kammerinnendruck möglich sind. Zu den baulichen Veränderungen gehören federnde Konturen am Blendeneinsatz, die derart ausgebildet sind, dass der Blendeneinsatz immer fest zwischen Gehäusewand des elektromagnetischen Schaltgerätes und dem Löschblechpaket eingepresst ist. Dadurch wird ein Überschlag zwischen zwei benachbarten Löschblechkanälen verhindert. Eine weitere bauliche Veränderung besteht in der Rastung zwischen Blendeneinsatz und Löschblechpaket, die zwei Funktionen sicherstellt. Zum Einen wird die Position der beiden Teile zueinander fixiert, so dass es zu keiner Überlappung der Schlitzkonturen kommt. Zum Anderen erfolgt durch die Rastung eine eindeutige Rückmeldung während des Montageprozesses. Die dritte bauliche Maßnahme am Blendeneinsatz besteht darin, dass der Querschnittsübergang fließend gestaltet wird, so dass Verwirbelungen durch diese strömungsgünstige Gestaltung vermieden werden. Es erfolgt somit eine saubere Ausblasung des Plasmas.The extinguishing chamber device according to the invention for electromagnetic switching devices, especially for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching performance with a high chamber internal pressure are possible. The structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always fixed between Housing wall of the electromagnetic switching device and the splitter stack is pressed. As a result, a flashover between two adjacent splitter plate channels is prevented. Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process. The third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.

Claims (5)

  1. Arc quenching chamber apparatus for an electromagnetic switching device, in particular for a circuit breaker, comprising an arc splitter stack and a panel insert (1) adjacent thereto, wherein the panel insert (1) is of cuboidal design with two side walls (2, 3) which are situated parallel in relation to one another and two side walls (4, 5) which connect the two side walls (2, 3), and wherein the panel insert (1) has a top side (6) and a bottom side (7), and wherein slots which are situated in parallel one beneath the other and which form the channels for ordered plasma discharge are arranged on the side wall (4), and also comprising a contact slide apparatus with moving switching pieces which are positioned opposite fixed switching pieces, characterized in that a resilient contour (12, 13) is arranged on the panel insert (1), the said contour being designed in such a way that the panel insert (1) is positioned fixed between the housing wall of the electromagnetic switching device and the arc splitter stack, wherein the resilient contours (12, 13) are formed on the side wall (4).
  2. Arc quenching chamber apparatus according to Claim 1, characterized in that the panel insert (1) is of L-shaped design.
  3. Arc quenching chamber apparatus according to Claim 1 or 2, characterized in that the resilient contour (12, 13) is formed on a side wall (4) of the panel insert (1) and has three subsections (16, 17, 18), wherein the resilient contour (12, 13) is of threaded or wedge-shaped design overall.
  4. Arc quenching chamber apparatus according to one of the preceding claims, characterized in that the panel insert (1) and the arc splitter stack are designed to latch to one another.
  5. Arc quenching chamber apparatus according to one of the preceding claims, characterized in that a flowing cross-section transition is formed from the panel insert (1) to the arc splitter plates, so that eddies are avoided owing to this flow-promoting configuration.
EP11182095.7A 2011-09-21 2011-09-21 Arcing chamber device for electromagnetic switching devices Active EP2573783B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11182095.7A EP2573783B1 (en) 2011-09-21 2011-09-21 Arcing chamber device for electromagnetic switching devices
BR102012023813A BR102012023813B8 (en) 2011-09-21 2012-09-20 Extinguishing chamber device for an electromagnetic switching apparatus
CN201210355250.8A CN103117197B (en) 2011-09-21 2012-09-21 For the arc-chutes device of electromagentic switching apparatus
KR1020120105178A KR101626390B1 (en) 2011-09-21 2012-09-21 Arcing chamber device for electromagnetic switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182095.7A EP2573783B1 (en) 2011-09-21 2011-09-21 Arcing chamber device for electromagnetic switching devices

Publications (2)

Publication Number Publication Date
EP2573783A1 EP2573783A1 (en) 2013-03-27
EP2573783B1 true EP2573783B1 (en) 2017-03-08

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Application Number Title Priority Date Filing Date
EP11182095.7A Active EP2573783B1 (en) 2011-09-21 2011-09-21 Arcing chamber device for electromagnetic switching devices

Country Status (4)

Country Link
EP (1) EP2573783B1 (en)
KR (1) KR101626390B1 (en)
CN (1) CN103117197B (en)
BR (1) BR102012023813B8 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015188865A1 (en) * 2014-06-12 2015-12-17 Siemens Aktiengesellschaft Quenching chamber device for an electromagnetic switching device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149019C1 (en) * 2001-09-28 2003-06-18 Siemens Ag Arc quenching device for low-voltage switchgear
DE102005043396A1 (en) * 2005-09-08 2007-03-15 Siemens Ag Replaceable blanks for a circuit breaker and circuit breaker with replaceable blanks
CN101540248B (en) * 2009-03-30 2011-04-13 常熟开关制造有限公司(原常熟开关厂） Low-voltage breaker
CN102129925B (en) * 2011-04-02 2012-12-05 常熟开关制造有限公司(原常熟开关厂） Arc-extinguishing chamber of circuit breaker with free-eliminating device

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Also Published As

Publication number Publication date
KR101626390B1 (en) 2016-06-01
BR102012023813A2 (en) 2014-12-16
CN103117197B (en) 2016-05-25
KR20130031810A (en) 2013-03-29
CN103117197A (en) 2013-05-22
BR102012023813B1 (en) 2020-09-29
EP2573783A1 (en) 2013-03-27
BR102012023813B8 (en) 2021-12-07

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