EP1930929B1 - High-tension circuit breaker with a metal tank filled with dielectric gas - Google Patents

High-tension circuit breaker with a metal tank filled with dielectric gas Download PDF

Info

Publication number
EP1930929B1
EP1930929B1 EP06405507A EP06405507A EP1930929B1 EP 1930929 B1 EP1930929 B1 EP 1930929B1 EP 06405507 A EP06405507 A EP 06405507A EP 06405507 A EP06405507 A EP 06405507A EP 1930929 B1 EP1930929 B1 EP 1930929B1
Authority
EP
European Patent Office
Prior art keywords
housing
edge
switch according
section
exhaust gases
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
EP06405507A
Other languages
German (de)
French (fr)
Other versions
EP1930929A1 (en
EP1930929B2 (en
Inventor
Xiangyang Ye
Martin Kriegel
Andreas Dahlquist
Fredrik Jonsson
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37768774&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1930929(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Priority to EP06405507A priority Critical patent/EP1930929B2/en
Priority to AT06405507T priority patent/ATE457520T1/en
Priority to DE502006006123T priority patent/DE502006006123D1/en
Priority to JP2007306805A priority patent/JP2008147183A/en
Priority to US11/987,649 priority patent/US7956306B2/en
Priority to CN200710196857.5A priority patent/CN101197220B/en
Publication of EP1930929A1 publication Critical patent/EP1930929A1/en
Publication of EP1930929B1 publication Critical patent/EP1930929B1/en
Application granted granted Critical
Publication of EP1930929B2 publication Critical patent/EP1930929B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
    • 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

Definitions

  • the present invention relates to a high-voltage switch according to the preamble of claim 1.
  • This switch has an insulating gas-filled metal container and a built-in container quenching chamber.
  • the quench chamber includes a housing aligned along an axis, an arcing contact assembly held in the housing, an exhaust volume limited by the housing, and an exhaust passage for exhaust gases passing through the wall of the housing.
  • the outlet channel opens with a predominantly aligned in the direction of the axis portion into the container.
  • the switching chamber is at high voltage potential and occur when switching off a short circuit current generated by the switching arc hot exhaust gases through the outlet channel in the metal container at ground potential.
  • the hot exhaust gases have a low density and therefore locally temporarily reduce the dielectric properties of the insulating gas present in the metal container.
  • EP 1 605 485 A1 discloses a high voltage switch according to the preamble of claim 1.
  • a high voltage switch of the type mentioned is described in the earlier European patent application file reference EP 06 40 5112.1 , registered on 14.3.2006.
  • This switch includes a quench chamber having an arcing contact assembly held in a housing and an exhaust unit integrated into the housing which has an exhaust volume defined by the housing and an outlet for exhaust gases routed through the housing.
  • About the exhaust unit in a coaxial arrangement designed in the manner of a pot exhaust module is slipped.
  • the housing and pot define a mouth portion of an exhaust passage with an electrically shielded, axially aligned exhaust port.
  • the exhaust gases therefore affect the quality of a gas insulation between an extinguishing chamber receiving, Insulating gas filled metal container and the housing in general only slightly, so that the switch can be loaded with high-power switching arcs long period, as this has a reduction in the frequency of the high voltage of, for example 50 to 16 2/3 Hz result.
  • the invention has the object to provide a high voltage switch of the type mentioned, which is characterized by a high level of reliability.
  • an annularly guided around the axis, electrically shielded edge is arranged on an end face of the mouth portion outwardly limiting housing approach.
  • a guided in the mouth section exhaust gas flow from the housing approach and can now enter as radially outwardly limited gas jet into the metal container.
  • the hot gas jet which has a low density and therefore only comparatively weak dielectric properties, is carried away at the edge of electrically heavily loaded areas on the front side of the housing projection because of the stall. This avoids that hot exhaust gases are due to the Coanda effect of the inner surface of the housing approach over a convex curved surface of the front side on the also convex curved outer surface of the housing approach are guided and this flow through dielectrically heavily loaded areas.
  • Such dielectrically heavily loaded areas are mainly located on the front side and a subsequent to the front side portion of the outside of the housing approach, ie in areas where the radii of curvature of the field-loaded surfaces of the housing approach are relatively small.
  • the edge has a small radius of curvature relative to the radii of curvature of the field-loaded surfaces of the housing projection. If the edge delimits an inner surface of the housing projection in the direction of flow of the exhaust gases, the flow separates in a defined manner from an easily positioned, dielectrically relieved point. In order to achieve good dielectric properties, in this case the edge is offset axially relative to a convexly curved surface of the front side causing the electrical shield, radially inward and / or opposite to an edge delimiting the end side in the flow direction against the flow direction. If a step is provided in the end face extending from the edge to the edge, then the exhaust gases can come off the housing projection even when the flow rate is low, and the edge is at the same time particularly electrically shielded.
  • a flow ring guided around the axis is provided on an outer surface of the housing section associated with the mouth section arranged an electrically shielded second edge. This edge is offset radially outwards relative to the outer surface.
  • the flow ring advantageously has a profile designed in the manner of a sawtooth with a steep flank arranged counter to the flow direction of the exhaust gases. Such a flank causes a secure separation of the flow at the second edge forming the tip of the sawtooth and thus enables, together with the edge provided on the housing projection, the formation of a dielectrically favorable free jet with an annular cross-section.
  • Insulation distances can be maintained if a tubular housing section with a diameter adapted to the housing projection adjoins the conically widened housing section.
  • the in Fig.1 shown high voltage switch has a with an insulating gas, such as based on sulfur hexafluoride, nitrogen, oxygen or carbon dioxide or mixtures of these gases, such as air, with a pressure up to a few bar filled and largely tubular shaped metal container 1, in which a quenching chamber. 2 is arranged.
  • the quenching chamber is kept electrically isolated in the metal container 1 with the aid of a post insulator not shown.
  • the quenching chamber 2 includes a housing 3, which is formed substantially symmetrically with respect to an axis A and inside the housing contains an arcing contact arrangement 4 with two relatively movable arcing contacts 5, 6.
  • the quenching chamber housing 3 also accommodates a rated current contact arrangement provided for guiding the continuous current and connected in parallel with the arcing contacts 5, 6, but this is not shown for reasons of clarity.
  • the quenching chamber housing is of an insulating tube 7 and two at the ends thereof formed gas-tight fastened metal hollow bodies, of which only the right end of the housing 3 forming hollow body 8 is shown.
  • the second hollow body, not shown, forms the left end of the housing 1 and is mounted on the also not apparent support insulator.
  • the two hollow bodies are generally made of cast metal, for example based on steel or aluminum, and serve to hold hot exhaust gases 9, which are formed in a switching operation in the contact assembly 4 and the leadership of the switch current and the shielding of parts of the quenching chamber 2, in the operation of the switch, ie when subjected to high voltages of up to one hundred and more kV and carrying 50 and more kA short-circuit currents, are exposed to strong electric fields.
  • the hollow body 8 limits an exhaust volume 10 and receives a gas mixing device 11 arranged in the exhaust volume. Via a guided through the housing 3 exhaust passage 12, the exhaust gases 9 are discharged from the exhaust volume 10 to the outside in the insulating gas-filled metal container 1.
  • the switch current is fed from the right through a current-conducting bolt 13, which is electrically conductively inserted into a cup-shaped sleeve 14.
  • the bottom of the cup resp. the sleeve 14 carries the gas mixing device 11.
  • the edge of the cup is guided radially outward and fixed by means of screw 15 to a border which limits an axially aligned opening of the hollow body 8, through which the pin 13 is guided to the outside.
  • the outlet channel 12 terminates in the metal container 1 with an outlet section 16 formed axially and designed as a hollow cylinder.
  • the outlet section 16 is bounded inwardly by a tubular section 17 of the housing 1 and outwardly by a tubular housing extension 18 which surrounds the housing section 17 at a distance ,
  • the housing extension 18 is part of a sleeve 14 holding and connected thereto by the screw 15, cup-shaped end member 19 of the hollow body 8, to which the element 19 is attached via not shown, radially guided webs or screws.
  • a flow ring 24 is formed with an annularly guided around the axis tear-off edge 25.
  • the edge 25 is arranged offset radially outwards relative to the surrounding outer wall of the housing 3 or of the housing section 17.
  • the flow ring 24 has a profile designed in the manner of a sawtooth with a counter to the flow direction of the exhaust gases 9 arranged steep flank 26.
  • a conically widening housing portion 27 At the flow ring 24 includes in the flow direction of the exhaust gases, a conically widening housing portion 27 at.
  • flat flank 28 of the flow ring 24 has a greater slope than the flared housing portion 27 to which a tubular housing portion 29 connects with a matched to the housing extension 18 diameter.
  • the exhaust gases 9 are guided in the mouth portion 16 in the axial direction from right to left and flow along the inner surface 22 of the housing projection 18 and the outer surface of the housing portion 17.
  • At the trailing edge 21 terminates an adhering to the inner surface 22 boundary layer of the exhaust gases, so that the Exhaust gases therefore dissolve from the housing approach 18 and can enter into the metal container 1 as a beam in electrically lightly loaded areas.
  • the exhaust gases which have comparatively weak dielectric properties because of their low density, reach areas of high electrical stress, such as, in particular, a convexly curved surface of the end face 20 and an adjoining, also convexly curved section of the outer surface of the housing projection 18
  • the convexity of the aforesaid surfaces is necessary to control the electrical field prevailing between the grounded metal container 1 and the quenching chamber 2 at high voltage potential, ie to reduce strong local electric fields at the end face 20 and at the sharp trailing edge 21 avoid.
  • the boundary layer adhering to the inner surface 22 could extend to the convexly curved end face 20 and the adjoining surface section, and thus the hot exhaust gases could be conducted into areas which are electrically comparatively highly loaded.
  • the detachment of the exiting from the mouth portion 16 exhaust gases 9 from the housing extension 18 is facilitated by the fact that the radius of curvature of the tear-off edge 21 is compared to the radii of curvature of the surface of the end face 20 dimensioned much smaller. Such a small radius of curvature may therefore possibly lead locally to undesirably high electric field load.
  • the tear-off edge 21 is arranged offset radially relative to the electrical shielding, curved surface of the end face 20 to form the step 23 radially inwardly, but also opposite the end face 20 axially against the flow direction of the exhaust gases. It is so ensures that the Auspuffgasströmung 9 not only safely detached from the housing extension 18, but that at the same time the tear-off edge 21 is particularly effectively shielded against the prevailing in the metal container electric field.
  • the flow ring 24 formed in the outer wall of the housing section 17 prevents the hot exhaust gases 9 passing from the mouth section 16 into the metal container 1 being guided along the housing section 27, since the exhaust gas flow can detach from the outer wall of the housing section 17 at the spoiler lip 25. Both demolition edges 21 and 25 can thus cause the formation of the free jet 30, which is performed in a particularly advantageous dielectric from the mouth portion 16 without further housing contact directly into the provided in the container 1, cool and therefore dielectrically high-quality insulating gas.
  • the steep flank 26 facilitates the detachment of the exhaust gas flow 9 from the housing 3.
  • the flatter flank 28 of the flow ring has a greater pitch than the conically widening housing section 27.
  • the housing portion 29 has a largely matching with the housing extension 18 diameter, the predetermined by the geometrical dimensions of the metal container 1 insulation distances between the grounded container wall and the high voltage potential housing approach 17 can be maintained.

Landscapes

  • Circuit Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Insulators (AREA)

Abstract

The high-tension circuit breaker has a metal tank filled with insulation gas and an arcing chamber embedded in the tank. A housing (3) is aligned along an axis and an arcing contact arrangement is located in the housing. An exhaust volume is limited by the housing and an outlet channel is guided through the wall of the housing for exhaust gas (9). An electrically screened annular edge (21), which rotates around the axis, is arranged on a front side (20) of the housing mount (18), which serves to separate a flow of exhaust gas that comes out of the outlet channel from a housing mount.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung bezieht sich auf einen Hochspannungsschalter nach dem Oberbegriff von Patentanspruch 1. Dieser Schalter weist einen isoliergasgefüllten Metallbehälter und eine in den Behälter eingebaute Löschkammer auf. Die Löschkammer enthält ein längs einer Achse ausgerichtetes Gehäuse, eine im Gehäuse gehaltene Lichtbogenkontaktanordnung, ein vom Gehäuse begrenztes Auspuffvolumen und einen durch die Wand des Gehäuses geführten Auslasskanal für Auspuffgase. Der Auslasskanal mündet mit einem vorwiegend in Richtung der Achse ausgerichteten Abschnitt in den Behälter. Bei Betrieb des Schalters befindet sich die Schaltkammer auf Hochspannungspotential und treten beim Abschalten eines Kurzschlussstroms vom Schaltlichtbogen erzeugte heisse Auspuffgase durch den Auslasskanal in den auf Erdpotential befindlichen Metallbehälter. Die heissen Auspuffgase weisen eine geringe Dichte auf und reduzieren daher lokal vorübergehend die dielektrischen Eigenschaften des im Metallbehälter vorhandenen Isoliergases.The present invention relates to a high-voltage switch according to the preamble of claim 1. This switch has an insulating gas-filled metal container and a built-in container quenching chamber. The quench chamber includes a housing aligned along an axis, an arcing contact assembly held in the housing, an exhaust volume limited by the housing, and an exhaust passage for exhaust gases passing through the wall of the housing. The outlet channel opens with a predominantly aligned in the direction of the axis portion into the container. During operation of the switch, the switching chamber is at high voltage potential and occur when switching off a short circuit current generated by the switching arc hot exhaust gases through the outlet channel in the metal container at ground potential. The hot exhaust gases have a low density and therefore locally temporarily reduce the dielectric properties of the insulating gas present in the metal container.

STAND DER TECHNIKSTATE OF THE ART

EP 1 605 485 A1 offenbart einen Hochspannungsschalter gemäß dem Oberbegriff des Anspruchs 1. Eine Hochspannungsschalter der eingangs genannten Art ist beschrieben in der älteren europäischen Patentanmeldung Aktenzeichen EP 06 40 5112.1 , angemeldet am 14.3.2006. Dieser Schalter enthält eine Löschkammer mit einer in einem Gehäuse gehaltenen Lichtbogenkontaktanordnung und einer ins Gehäuse integrierten Auspuffeinheit, welche ein vom Gehäuse begrenztes Auspuffvolumen und einen durch das Gehäuse geführten Auslass für Auspuffgase aufweist. Über die Auspuffeinheit ist in koaxialer Anordnung ein nach Art eines Topfs ausgebildetes Auspuffmodul gestülpt. Das Gehäuse und der Topf begrenzen einen Mündungsabschnitt eines Auspuffkanals mit einer elektrisch abgeschirmten, axial ausgerichteten Ausströmöffnung. Die Auspuffgase beeinträchtigen daher die Güte einer Gasisolation zwischen einem die Löschkammer aufnehmenden, isoliergasgefüllten Metallbehälter und dem Gehäuse im allgemeinen nur unwesentlich, so dass der Schalter auch mit leistungsstarken Schaltlichtbögen langer Periodendauer belastet werden kann, wie dies eine Reduktion der Frequenz der Hochspannung von beispielsweise 50 auf 16 2/3 Hz zur Folge hat. EP 1 605 485 A1 discloses a high voltage switch according to the preamble of claim 1. A high voltage switch of the type mentioned is described in the earlier European patent application file reference EP 06 40 5112.1 , registered on 14.3.2006. This switch includes a quench chamber having an arcing contact assembly held in a housing and an exhaust unit integrated into the housing which has an exhaust volume defined by the housing and an outlet for exhaust gases routed through the housing. About the exhaust unit in a coaxial arrangement designed in the manner of a pot exhaust module is slipped. The housing and pot define a mouth portion of an exhaust passage with an electrically shielded, axially aligned exhaust port. The exhaust gases therefore affect the quality of a gas insulation between an extinguishing chamber receiving, Insulating gas filled metal container and the housing in general only slightly, so that the switch can be loaded with high-power switching arcs long period, as this has a reduction in the frequency of the high voltage of, for example 50 to 16 2/3 Hz result.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Der Erfindung, wie sie in den Patentansprüchen angegeben ist, liegt die Aufgabe zugrunde, einen Hochspannungsschalter der eingangs genannten Art zu schaffen, welcher sich durch eine grosse Betriebssicherheit auszeichnet.The invention, as indicated in the claims, has the object to provide a high voltage switch of the type mentioned, which is characterized by a high level of reliability.

Beim Schalter nach der Erfindung ist an einer Stirnseite eines den Mündungsabschnitt nach aussen begrenzenden Gehäuseansatzes eine ringförmig um die Achse geführte, elektrisch abgeschirmte Kante angeordnet. An dieser Kante löst sich eine im Mündungsabschnitt geführte Auspuffgasströmung vom Gehäuseansatz und kann nun als nach aussen radial begrenzter Gasstrahl in den Metallbehälter eintreten. Der eine geringe Dichte und daher nur vergleichsweise schwache dielektrische Eigenschaften aufweisende heisse Gasstrahl wird wegen des Strömungsabrisses an der Kante von elektrisch stark belasteten Bereichen an der Stirnseite des Gehäuseansatzes weggeführt. Dadurch wird vermieden, dass heisse Auspuffgase aufgrund des Coanda-Effekts von der Innenfläche des Gehäuseansatzes über eine konvex gekrümmte Oberfläche der Stirnseite auf die ebenfalls konvex gekrümmte Aussenfläche des Gehäuseansatzes geführt werden und hierbei dielektrisch stark belastete Bereiche durchströmen. Solche dielektrisch stark belasteten Bereiche befinden sich vor allem an der Stirnseite und einem an die Stirnseite anschliessenden Abschnitt der Aussenseite des Gehäuseansatzes, also in Bereichen, in denen die Krümmungsradien der feldbelasteten Flächen des Gehäuseansatzes verhältnismässig klein sind. Durch Unterdrücken des Coanda-Effekts kann die dielektrische Festigkeit des Schalters an der Austrittsstelle der Auspuffgase in den isoliergasgefüllten und auf Erdpotential befindlichen Metallbehälter um bis zu 30% erhöht und dementsprechend die Betriebssicherheit des Schalters erheblich verbessert werden.In the switch according to the invention an annularly guided around the axis, electrically shielded edge is arranged on an end face of the mouth portion outwardly limiting housing approach. At this edge, a guided in the mouth section exhaust gas flow from the housing approach and can now enter as radially outwardly limited gas jet into the metal container. The hot gas jet, which has a low density and therefore only comparatively weak dielectric properties, is carried away at the edge of electrically heavily loaded areas on the front side of the housing projection because of the stall. This avoids that hot exhaust gases are due to the Coanda effect of the inner surface of the housing approach over a convex curved surface of the front side on the also convex curved outer surface of the housing approach are guided and this flow through dielectrically heavily loaded areas. Such dielectrically heavily loaded areas are mainly located on the front side and a subsequent to the front side portion of the outside of the housing approach, ie in areas where the radii of curvature of the field-loaded surfaces of the housing approach are relatively small. By suppressing the Coanda effect, the dielectric strength of the switch at the exit point of the exhaust gas into the insulating gas-filled and earth-potential metal container can be increased by up to 30%, and accordingly the reliability of the switch can be significantly improved.

Im allgemeinen weist die Kante gegenüber den Krümmungsradien der feldbelasteten Oberflächen des Gehäuseansatzes einen kleinen Krümmungsradius auf. Begrenzt die Kante eine Innenfläche des Gehäuseansatzes in Strömungsrichtung der Auspuffgase, so löst sich die Strömung definiert an einer leicht zu positionierenden, dielektrisch entlasteten Stelle ab. Um gute dielektrische Eigenschaften zu erreichen, ist hierbei die Kante gegenüber einer die elektrische Abschirmung bewirkenden, konvex gekrümmten Oberfläche der Stirnseite radial nach innen und/oder gegenüber einem die Stirnseite in Strömungsrichtung begrenzenden Rand entgegen der Strömungsrichtung axial versetzt angeordnet. Ist in der Stirnseite eine vom Rand auf die Kante erstreckte Stufe vorgesehen, so können sich die Auspuffgase beim Eintreten in den Metallbehälter auch bei einer geringen Strömungsgeschwindigkeit vom Gehäuseansatz ablösen und ist die Kante zugleich besonders wirksam elektrisch abgeschirmt.In general, the edge has a small radius of curvature relative to the radii of curvature of the field-loaded surfaces of the housing projection. If the edge delimits an inner surface of the housing projection in the direction of flow of the exhaust gases, the flow separates in a defined manner from an easily positioned, dielectrically relieved point. In order to achieve good dielectric properties, in this case the edge is offset axially relative to a convexly curved surface of the front side causing the electrical shield, radially inward and / or opposite to an edge delimiting the end side in the flow direction against the flow direction. If a step is provided in the end face extending from the edge to the edge, then the exhaust gases can come off the housing projection even when the flow rate is low, and the edge is at the same time particularly electrically shielded.

Um zu verhindern, dass die aus dem Mündungsabschnitt in den Metallbehälter tretenden heissen Auspuffgase entlang einem Abschnitt des Gehäuses geführt werden, welcher an einen den Mündungsabschnitt nach innen begrenzenden Gehäuseabschnitt anschliesst, ist an einer Aussenfläche des dem Mündungsabschnitt zugeordneten Gehäusesabschnitts ein um die Achse geführter Strömungsring mit einer elektrisch abgeschirmten zweiten Kante angeordnet. Diese Kante ist gegenüber der Aussenfläche radial nach aussen versetzt. Der Strömungsring weist mit Vorteil ein nach Art eines Sägezahns ausgeführtes Profil auf mit einer entgegen der Strömungsrichtung der Auspuffgase angeordneten steilen Flanke. Eine solche Flanke bewirkt ein sicheres Ablösen der Strömung an der die Spitze des Sägezahns bildenden zweiten Kante und ermöglicht so zusammen mit der am Gehäuseansatz vorgesehen Kante die Bildung eines dielektrisch günstigen Freistrahls mit ringförmigem Querschnitt.In order to prevent the hot exhaust gases passing from the mouth section into the metal container being guided along a section of the housing which adjoins a housing section delimiting the mouth section, a flow ring guided around the axis is provided on an outer surface of the housing section associated with the mouth section arranged an electrically shielded second edge. This edge is offset radially outwards relative to the outer surface. The flow ring advantageously has a profile designed in the manner of a sawtooth with a steep flank arranged counter to the flow direction of the exhaust gases. Such a flank causes a secure separation of the flow at the second edge forming the tip of the sawtooth and thus enables, together with the edge provided on the housing projection, the formation of a dielectrically favorable free jet with an annular cross-section.

Im allgemeinen erweitert sich ein an den vorgenannten Gehäuseabschnitt resp. den Strömungsring anschliessender Abschnitt des Gehäuses konisch. Der aus dem Mündungsabschnitt austretenden Freistrahl bleibt dann mit Sicherheit erhalten, wenn eine in Strömungsrichtung der Auspuffgase angeordnete flache Flanke des Strömungsrings eine grössere Steigung aufweist als der sich konisch erweiternde Gehäuseabschnitt.In general, one extends to the aforementioned housing section resp. the flow ring subsequent section of the housing conical. The free jet emerging from the mouth section then remains with certainty if a flat flank of the flow ring arranged in the flow direction of the exhaust gases has a greater pitch than the conically widening housing section.

Die durch die geometrischen Abmessungen des Metallbehälters vorgegebenenThe predetermined by the geometric dimensions of the metal container

Isolationsabstände lassen sich einhalten, wenn sich an den konisch erweiterten Gehäuseabschnitt ein rohrförmig ausgebildeter Gehäuseabschnitt mit einem an den Gehäuseansatz angepassten Durchmesser anschliesst.Insulation distances can be maintained if a tubular housing section with a diameter adapted to the housing projection adjoins the conically widened housing section.

KURZE BESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES

Anhand von Zeichnungen wird nachfolgend ein Ausführungsbeispiel der Erfindung näher erläutert. Hierbei zeigt die

Fig.1
eine Aufsicht auf einen längs einer Achse geführten Schnitt durch einen Teil eines gasisolierten Hochspannungsschalters nach der Erfindung, und
Fig.2
eine Vergrösserung eines umrandet dargestellten Teils des Schalters nach Fig.1.
With reference to drawings, an embodiment of the invention will be explained in more detail below. This shows the
Fig.1
a plan view of a guided along an axis section through a portion of a gas-insulated high-voltage switch according to the invention, and
Fig.2
an enlargement of an outlined portion of the switch after Fig.1 ,

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

In beiden Figuren beziehen sich gleiche Bezugszeichen auf gleichwirkende Teile. Der in Fig.1 dargestellte Hochspannungsschalter weist einen mit einem Isoliergas, etwa auf der Basis Schwefelhexafluorid, Stickstoff, Sauerstoff oder Kohlendioxid oder von Mischungen dieser Gase, wie etwa Luft, mit einem Druck bis zu einigen Bar gefüllten und weitgehend rohrförmig gestalteten Metallbehälter 1 auf, in dem eine Löschkammer 2 angeordnet ist. Die Löschkammer ist mit Hilfe eines aus der Figur nicht ersichtlichen Stützisolators elektrisch isoliert im Metallbehälter 1 gehalten. Die Löschkammer 2 enthält ein Gehäuse 3, das hinsichtlich einer Achse A weitgehend symmetrisch ausgebildet ist und im Gehäuseinneren eine Lichtbogenkontaktanordnung 4 mit zwei relativ zueinander beweglichen Lichtbogenkontakten 5, 6 enthält. Im allgemeinen nimmt das Löschkammergehäuse 3 auch eine zur Führung des Dauerstroms vorgesehene und parallel zu den Lichtbogenkontakten 5, 6 geschaltete Nennstromkontaktanordnung auf, die aus Gründen der Übersichtlichkeit jedoch nicht dargestellt ist. Das Löschkammergehäuse wird von einem Isolierrohr 7 und zwei an dessen Enden gasdicht befestigten metallenen Hohlkörpern gebildet, von denen nur der das rechte Ende des Gehäuses 3 bildende Hohlkörper 8 dargestellt ist. Der nicht dargestellte zweite Hohlkörper bildet das linke Ende des Gehäuses 1 und ist auf dem ebenfalls nicht ersichtlichen Stützisolator befestigt.In both figures, like reference numerals refer to like acting parts. The in Fig.1 shown high voltage switch has a with an insulating gas, such as based on sulfur hexafluoride, nitrogen, oxygen or carbon dioxide or mixtures of these gases, such as air, with a pressure up to a few bar filled and largely tubular shaped metal container 1, in which a quenching chamber. 2 is arranged. The quenching chamber is kept electrically isolated in the metal container 1 with the aid of a post insulator not shown. The quenching chamber 2 includes a housing 3, which is formed substantially symmetrically with respect to an axis A and inside the housing contains an arcing contact arrangement 4 with two relatively movable arcing contacts 5, 6. In general, the quenching chamber housing 3 also accommodates a rated current contact arrangement provided for guiding the continuous current and connected in parallel with the arcing contacts 5, 6, but this is not shown for reasons of clarity. The quenching chamber housing is of an insulating tube 7 and two at the ends thereof formed gas-tight fastened metal hollow bodies, of which only the right end of the housing 3 forming hollow body 8 is shown. The second hollow body, not shown, forms the left end of the housing 1 and is mounted on the also not apparent support insulator.

Die beiden Hohlkörper sind im allgemeinen aus Gussmetall, etwa auf der Basis Stahl oder Aluminium, gefertigt und dienen der Aufnahme heisser Auspuffgase 9, die bei einem Schaltvorgang in der Kontaktanordnung 4 gebildet werden sowie der Führung des Schalterstroms und der Abschirmung von Teilen der Löschkammer 2, die im Betrieb des Schalters, d.h. beim Belasten mit Hochspannungen bis zu hundert und mehr kV und beim Führen von 50 und mehr kA betragenden Kurzschlussströmen, starken elektrischen Feldern ausgesetzt sind. Der Hohlkörper 8 begrenzt ein Auspuffvolumen 10 und nimmt eine im Auspuffvolumen angeordnete Gasmischvorrichtung 11 auf. Über einen durch das Gehäuse 3 geführten Auslasskanal 12 werden die Auspuffgase 9 aus dem Auspuffvolumen 10 nach aussen in den isoliergasgefüllten Metallbehälter 1 abgeführt. Der Schalterstrom wird von rechts durch einen stromleitenden Bolzen 13 eingespeist, der elektrisch leitend in eine becherförmige Hülse 14 eingesteckt ist. Der Boden des Bechers resp. der Hülse 14 trägt die Gasmischvorrichtung 11. Der Rand des Bechers ist radial nach aussen geführt und mit Hilfe von Schraubverbindungen 15 an einer Umrandung festgesetzt, welche eine axial ausgerichtete Öffnung des Hohlkörpers 8 begrenzt, durch die der Bolzen 13 nach aussen geführt ist.The two hollow bodies are generally made of cast metal, for example based on steel or aluminum, and serve to hold hot exhaust gases 9, which are formed in a switching operation in the contact assembly 4 and the leadership of the switch current and the shielding of parts of the quenching chamber 2, in the operation of the switch, ie when subjected to high voltages of up to one hundred and more kV and carrying 50 and more kA short-circuit currents, are exposed to strong electric fields. The hollow body 8 limits an exhaust volume 10 and receives a gas mixing device 11 arranged in the exhaust volume. Via a guided through the housing 3 exhaust passage 12, the exhaust gases 9 are discharged from the exhaust volume 10 to the outside in the insulating gas-filled metal container 1. The switch current is fed from the right through a current-conducting bolt 13, which is electrically conductively inserted into a cup-shaped sleeve 14. The bottom of the cup resp. the sleeve 14 carries the gas mixing device 11. The edge of the cup is guided radially outward and fixed by means of screw 15 to a border which limits an axially aligned opening of the hollow body 8, through which the pin 13 is guided to the outside.

Ersichtlich mündet der Auslasskanal 12 mit einem axial erstreckten und als Hohlzylinder ausgebildeten Mündungsabschnitt 16 in den Metallbehälter 1. Der Mündungsabschnitt 16 ist nach innen durch einen rohrförmigen Abschnitt 17 des Gehäuses 1 und nach aussen durch einen den Gehäuseabschnitt 17 mit Abstand umgebenden, rohrförmigen Gehäuseansatz 18 begrenzt. Der Gehäuseansatz 18 ist Teil eines die Hülse 14 haltenden und mit dieser durch die Schraubverbindung 15 verbundenen, topfförmigen Abschlusselements 19 des Hohlkörpers 8, an dem das Element 19 über nicht dargestellte, radial geführte Stege oder Schrauben befestigt ist.The outlet channel 12 terminates in the metal container 1 with an outlet section 16 formed axially and designed as a hollow cylinder. The outlet section 16 is bounded inwardly by a tubular section 17 of the housing 1 and outwardly by a tubular housing extension 18 which surrounds the housing section 17 at a distance , The housing extension 18 is part of a sleeve 14 holding and connected thereto by the screw 15, cup-shaped end member 19 of the hollow body 8, to which the element 19 is attached via not shown, radially guided webs or screws.

Aus Fig.2 ist ersichtlich, dass in eine Stirnseite 20 des Gehäuseansatzes 18 eine ringförmig um die Achse A (Fig.1) geführte Abrisskante 21 eingeformt ist. Diese Kante begrenzt die Innenfläche 22 des Gehäuseansatzes 18 nach links, d.h. in Strömungsrichtung der Auspuffgase 9, und ist gegenüber einer die elektrische Abschirmung bewirkenden, konvex gekrümmten Oberfläche der Stirnseite 20 radial nach innen versetzt angeordnet. Ersichtlich ist die Kante 21 auch gegenüber einem die Stirnseite nach links begrenzenden Rand nach rechts, d.h. entgegen der Strömungsrichtung, versetzt angeordnet. Die radiale und die axiale Versetzung der Kante 21 werden durch eine in die Stirnseite eingeformte, von deren Rand auf die Kante 21 erstreckte Stufe 23 erreicht.Out Fig.2 It can be seen that in an end face 20 of the housing projection 18 an annular about the axis A ( Fig.1 ) guided tear-off edge 21 is formed. This edge bounds the inner surface 22 of the housing projection 18 to the left, ie in the flow direction of the exhaust gases 9, and is opposite to the electrical shield causing, convex curved surface of the end face 20 arranged radially inwardly offset. As can be seen, the edge 21 is also offset relative to an edge bordering the front side to the left, ie offset against the flow direction. The radial and axial displacement of the edge 21 are achieved by a molded into the end face, extending from the edge of the edge 21 stage 23.

In die Aussenwand des Gehäuseabschnitts 17 ist ein Strömungsring 24 mit einer ringförmig um die Achse geführten Abrisskante 25 eingeformt. Die Kante 25 ist gegenüber der umgebenden Aussenwand des Gehäuses 3 bzw. des Gehäuseabschnitts 17 radial nach aussen versetzt angeordnet. Der Strömungsring 24 weist ein nach Art eines Sägezahns ausgeführtes Profil auf mit einer entgegen der Strömungsrichtung der Auspuffgase 9 angeordneten steilen Flanke 26. An den Strömungsring 24 schliesst in Strömungsrichtung der Auspuffgase ein sich konisch erweiternder Gehäuseabschnitt 27 an. Eine in Strömungsrichtung der Auspuffgase angeordnete flache Flanke 28 des Strömungsringes 24 weist eine grössere Steigung auf als der sich konisch erweiternde Gehäuseabschnitt 27, an den sich ein rohrförmig ausgebildeter Gehäuseabschnitt 29 anschliesst mit einem an den Gehäuseansatz 18 angepassten Durchmesser.In the outer wall of the housing portion 17, a flow ring 24 is formed with an annularly guided around the axis tear-off edge 25. The edge 25 is arranged offset radially outwards relative to the surrounding outer wall of the housing 3 or of the housing section 17. The flow ring 24 has a profile designed in the manner of a sawtooth with a counter to the flow direction of the exhaust gases 9 arranged steep flank 26. At the flow ring 24 includes in the flow direction of the exhaust gases, a conically widening housing portion 27 at. Arranged in the flow direction of the exhaust gases flat flank 28 of the flow ring 24 has a greater slope than the flared housing portion 27 to which a tubular housing portion 29 connects with a matched to the housing extension 18 diameter.

Beim Abschalten eines Kurzschlussstroms wird der Lichtbogenkontakt 6 durch einen in Pfeilrichtung wirkenden Antrieb nach links bewegt. Zwischen den sich öffnenden Kontakten 5, 6 der Lichtbogenkontaktanordnung 4 wird ein vom abzuschaltenden Strom gespeister Schaltlichtbogen S gezogen. Dieser Lichtbogen heizt umgebendes Isoliergas auf und kann im Nulldurchgang des Stroms gelöscht werden. Durch den Schaltlichtbogen S gebildete heisse Gase gelangen als Auspuffgase 9 ins Auspuffvolumen 10, werden dort an der Gasmischvorrichtung 11 vorgekühlt, im Auslasskanal 12 durch die Wand des Löschkammergehäuses 3 geführt und nach Verlassen des vorwiegend axial ausgerichteten Mündungsabschnitts 16 als ringförmiger Freistrahl 30 ins Metallgehäuse 3 ausgestossen.When a short-circuit current is switched off, the arc contact 6 is moved to the left by a drive acting in the direction of the arrow. Between the opening contacts 5, 6 of the arcing contact arrangement 4, a switching arc S fed by the current to be disconnected is drawn. This arc heats surrounding insulating gas and can be extinguished at the zero crossing of the current. Hot gases formed by the switching arc S reach the exhaust volume 10 as exhaust gases 9, are precooled there at the gas mixing device 11, guided in the outlet channel 12 through the wall of the extinguishing chamber housing 3 and after leaving the mainly axial aligned mouth portion 16 ejected as an annular free jet 30 into the metal housing 3.

Die Auspuffgase 9 werden im Mündungsabschnitt 16 in axialer Richtung von rechts nach links geführt und strömen entlang der Innenfläche 22 des Gehäuseansatzes 18 und der Aussenfläche des Gehäuseabschnitts 17. An der Abrisskante 21 endet eine auf der Innenfläche 22 haftende Grenzschicht der Auspuffgase, so dass sich die Auspuffgase daher vom Gehäuseansatz 18 lösen und als Strahl in elektrisch gering belastete Bereiche in den Metallbehälter 1 eintreten können. Es wird so vermieden, dass die wegen ihrer geringen Dichte vergleichsweise schwache dielektrische Eigenschaften aufweisenden heissen Auspuffgase in elektrisch stark belastete Bereiche gelangen, wie insbesondere an eine konvex gekrümmte Oberfläche der Stirnseite 20 und einen sich daran anschliessenden, ebenfalls konvex gekrümmten Abschnitt der Aussenfläche des Gehäuseansatzes 18. Die konvexe Ausbildung der vorgenannten Flächen ist notwendig, um das zwischen dem geerdeten Metallbehälter 1 und der auf Hochspannungspotential befindlichen Löschkammer 2 herrschende elektrische Feld zu steuern, d.h., um starke lokale elektrische Felder an der Stirnseite 20 zu reduzieren und an der scharfen Abrisskante 21 zu vermeiden.The exhaust gases 9 are guided in the mouth portion 16 in the axial direction from right to left and flow along the inner surface 22 of the housing projection 18 and the outer surface of the housing portion 17. At the trailing edge 21 terminates an adhering to the inner surface 22 boundary layer of the exhaust gases, so that the Exhaust gases therefore dissolve from the housing approach 18 and can enter into the metal container 1 as a beam in electrically lightly loaded areas. It is thus avoided that the exhaust gases, which have comparatively weak dielectric properties because of their low density, reach areas of high electrical stress, such as, in particular, a convexly curved surface of the end face 20 and an adjoining, also convexly curved section of the outer surface of the housing projection 18 The convexity of the aforesaid surfaces is necessary to control the electrical field prevailing between the grounded metal container 1 and the quenching chamber 2 at high voltage potential, ie to reduce strong local electric fields at the end face 20 and at the sharp trailing edge 21 avoid.

Beim Fehlen der Abrisskante 21 könnte sich aufgrund des Coanda-Effekts die auf der Innenfläche 22 haftende Grenzschicht auf die konvex gekrümmte Stirnseite 20 und den sich anschliessenden Oberflächenabschnitt erstrecken und könnten so die heissen Auspuffgase in elektrisch vergleichsweise hoch belastete Bereiche geführt werden.In the absence of the tear-off edge 21, due to the Coanda effect, the boundary layer adhering to the inner surface 22 could extend to the convexly curved end face 20 and the adjoining surface section, and thus the hot exhaust gases could be conducted into areas which are electrically comparatively highly loaded.

Das Ablösen der aus dem Mündungabschnitt 16 tretenden Auspuffgase 9 vom Gehäuseansatz 18 wird dadurch begünstigt, dass der Krümmungsradius der Abrisskante 21 ist gegenüber den Krümmungsradien der Oberfläche der Stirnseite 20 wesentlich kleiner bemessen. Ein solch kleiner Krümmungsradius kann daher gegebenenfalls lokal zu unerwünscht hoher elektrischer Feldbelastung führen. Die Abrisskante 21 ist gegenüber der die elektrische Abschirmung bewirkenden, gekrümmten Oberfläche der Stirnseite 20 unter Bildung der Stufe 23 radial nach innen, ersichtlich aber auch gegenüber der Stirnseite 20 axial entgegen der Strömungsrichtung der Auspuffgase 9, versetzt angeordnet. Es ist so gewährleistet, dass sich die Auspuffgasströmung 9 vom Gehäuseansatz 18 nicht nur sicher ablöst, sondern dass zugleich die Abrisskante 21 besonders wirksam gegen dem im Metallbehälter herrschenden elektrischen Feld abgeschirmt ist.The detachment of the exiting from the mouth portion 16 exhaust gases 9 from the housing extension 18 is facilitated by the fact that the radius of curvature of the tear-off edge 21 is compared to the radii of curvature of the surface of the end face 20 dimensioned much smaller. Such a small radius of curvature may therefore possibly lead locally to undesirably high electric field load. The tear-off edge 21 is arranged offset radially relative to the electrical shielding, curved surface of the end face 20 to form the step 23 radially inwardly, but also opposite the end face 20 axially against the flow direction of the exhaust gases. It is so ensures that the Auspuffgasströmung 9 not only safely detached from the housing extension 18, but that at the same time the tear-off edge 21 is particularly effectively shielded against the prevailing in the metal container electric field.

Der in die Aussenwand des Gehäuseabschnitts 17 eingeformte Strömungsring 24 verhindert, dass die aus dem Mündungsabschnitt 16 in den Metallbehälter 1 tretenden heissen Auspuffgase 9 entlang dem Gehäuseabschnitt 27 geführt werden, da die Auspuffgasströmung sich an der Abrisskante 25 von der Aussenwand des Gehäuseabschnitts 17 lösen kann. Beide Abrisskanten 21 und 25 können so die Bildung des Freistrahls 30 bewirken, der in dielektrisch besonders vorteilhafter Weise aus dem Mündungsabschnitt 16 ohne weiteren Gehäusekontakt direkt in das im Behälter 1 vorgesehene, kühle und daher dielektrisch hochwertige Isoliergas geführt wird. Die steile Flanke 26 erleichtert das Ablösen der Auspuffgasströmung 9 vom Gehäuse 3.The flow ring 24 formed in the outer wall of the housing section 17 prevents the hot exhaust gases 9 passing from the mouth section 16 into the metal container 1 being guided along the housing section 27, since the exhaust gas flow can detach from the outer wall of the housing section 17 at the spoiler lip 25. Both demolition edges 21 and 25 can thus cause the formation of the free jet 30, which is performed in a particularly advantageous dielectric from the mouth portion 16 without further housing contact directly into the provided in the container 1, cool and therefore dielectrically high-quality insulating gas. The steep flank 26 facilitates the detachment of the exhaust gas flow 9 from the housing 3.

Um ein Ablösen der Auspuffgasströmung auch vom sich konisch erweiternden Gehäuseabschnitt 27 zu erleichtern, ist es von Vorteil, wenn die flachere Flanke 28 des Strömungsrings eine grössere Steigung aufweist als der sich konisch erweiternde Gehäuseabschnitt 27.In order to facilitate a detachment of the exhaust gas flow from the conically widening housing section 27, it is advantageous if the flatter flank 28 of the flow ring has a greater pitch than the conically widening housing section 27.

Dadurch, dass der Gehäuseabschnitt 29 einen weitgehend mit dem Gehäuseansatz 18 übereinstimmenden Durchmesser aufweist, können die durch die geometrischen Abmessungen des Metallbehälters 1 vorgegebenen Isolationsabstände zwischen der geerdeten Behälterwand und dem auf Hochspannungspotential Gehäuseansatz 17 eingehalten werden.Characterized in that the housing portion 29 has a largely matching with the housing extension 18 diameter, the predetermined by the geometrical dimensions of the metal container 1 insulation distances between the grounded container wall and the high voltage potential housing approach 17 can be maintained.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Metallbehältermetal containers
22
Schaltkammerswitching chamber
33
SchaltkammergehäuseSwitching chamber housing
44
LichtbogenkontaktanordnungArcing contact arrangement
5, 65, 6
LichtbogenkontakteArcing contacts
77
Isolierrohrinsulating
88th
Hohlkörperhollow body
99
Auspuffgaseexhaust gases
1010
Auspuffvolumenexhaust volume
1111
GasmischvorrichtungGas mixing device
1212
Auslasskanalexhaust port
1313
Stromleiter, BolzenElectricity conductor, bolts
1414
Hülseshell
1515
Schraubverbindungenscrew
1616
Mündungsabschnittmouth portion
1717
Gehäuseabschnitthousing section
1818
Gehäuseansatzhousing extension
1919
Abschlusselementtermination element
2020
Stirnflächeface
2121
Abrisskantetear-off edge
2222
Innenflächepalm
2323
Stufestep
2424
Strömungsringflow ring
2525
Abrisskantetear-off edge
26,2826.28
Flankenflanks
27,2927.29
Gehäuseabschnittehousing sections
3030
Freistrahlfree jet
AA
Achseaxis
SS
SchaltlichtbogenSwitching arc

Claims (10)

  1. High-voltage switch having a metal container (1) filled with insulating gas and having a quenching chamber (2) installed in the container, containing a housing (3) which is aligned along an axis (A), an arcing contact arrangement (4) which is held in the housing, an exhaust volume (10) which is bounded by the housing (3), and an outlet channel (12) which is passed through the wall of the housing for exhaust gases (9) in which the outlet channel (12) opens with a section (16) which is aligned predominantly axially into the container (1) and the mouth section (16) is bounded on the inside by a tubular first section (17) of the housing (3) and on the outside by a tubular housing attachment (18) which surrounds the housing section (17) at a distance from it,
    characterized in that an electrically shielded first edge (21) is arranged on one end face (20) of the housing attachment (18), is passed in an annular shape around the axis (A) and is used for detachment of a flow emergent from the outlet channel (16) of the exhaust gases (9) from the housing attachment (18).
  2. Switch according to Claim 1, characterized in that the first edge (21) bounds an inner surface (22) of the housing attachment (18) in the flow direction of the exhaust gases (9).
  3. Switch according to one of Claims 1 or 2, characterized in that the edge (21) is arranged offset radially inwards with respect to a convex-curved surface, which acts as the electrical shield of the end face (20).
  4. Switch according to one of Claims 1 to 3, characterized in that the edge (21) is arranged axially offset in the opposite direction to the flow direction with respect to a rim which bounds the end face in the flow direction.
  5. Switch according to Claim 4, characterized in that a step (23) which extends from the rim to the edge (21) is provided in the end face.
  6. Switch according to one of Claims 1 to 5, characterized in that a flow ring (24) which is passed around the axis (A) and has an electrically shielded second edge (25) which is offset radially outwards with respect to the outer surface is arranged on an outer surface of the housing section (17).
  7. Switch according to Claim 6, characterized in that the flow ring (24) has a profile in the form of a sawtooth with a steep flank (26) arranged in the opposite direction to the flow direction of the exhaust gases (9).
  8. Switch according to one of Claims 6 or 7, characterized in that a conically widening second housing section (27) is adjacent to the flow ring (24).
  9. Switch according to Claim 8, characterized in that a flat flank (28), which is arranged in the flow direction of the exhaust gases (9) of the flow ring (24) has a greater gradient than the conically widening second housing section (27).
  10. Switch according to one of Claims 8 or 9, characterized in that a tubular third housing section (29) with a diameter matched to the housing attachment (18) is adjacent to the conically widening second housing section (27).
EP06405507A 2006-12-06 2006-12-06 High-tension circuit breaker with a metal tank filled with dielectric gas Active EP1930929B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP06405507A EP1930929B2 (en) 2006-12-06 2006-12-06 High-tension circuit breaker with a metal tank filled with dielectric gas
AT06405507T ATE457520T1 (en) 2006-12-06 2006-12-06 HIGH VOLTAGE SWITCH WITH AN INSULATING GAS FILLED METAL CONTAINER
DE502006006123T DE502006006123D1 (en) 2006-12-06 2006-12-06 High voltage switch with an insulating gas filled metal container
JP2007306805A JP2008147183A (en) 2006-12-06 2007-11-28 High voltage switch provided with metal container filled with insulating gas
US11/987,649 US7956306B2 (en) 2006-12-06 2007-12-03 High-voltage switch with a metal container filled with insulating gas
CN200710196857.5A CN101197220B (en) 2006-12-06 2007-12-05 High-tension circuit breaker with a metal tank filled with dielectric gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405507A EP1930929B2 (en) 2006-12-06 2006-12-06 High-tension circuit breaker with a metal tank filled with dielectric gas

Publications (3)

Publication Number Publication Date
EP1930929A1 EP1930929A1 (en) 2008-06-11
EP1930929B1 true EP1930929B1 (en) 2010-02-10
EP1930929B2 EP1930929B2 (en) 2013-01-30

Family

ID=37768774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405507A Active EP1930929B2 (en) 2006-12-06 2006-12-06 High-tension circuit breaker with a metal tank filled with dielectric gas

Country Status (6)

Country Link
US (1) US7956306B2 (en)
EP (1) EP1930929B2 (en)
JP (1) JP2008147183A (en)
CN (1) CN101197220B (en)
AT (1) ATE457520T1 (en)
DE (1) DE502006006123D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2946181B1 (en) 2009-05-26 2011-07-01 Areva T & D Sa HIGH VOLTAGE CIRCUIT BREAKER WITH IMPROVED GAS EXHAUST.
FR2962847B1 (en) * 2010-07-16 2012-08-17 Areva T & D Sas CUTTING CHAMBER EQUIPMENT FOR TWO CONFINED CONTACT ELECTRODES
DE102012202406A1 (en) * 2012-02-16 2013-08-22 Siemens Ag Switchgear arrangement
CN104766765B (en) * 2015-02-10 2016-09-07 郑州大学 A kind of novel evacuated fracture based on permanent magnet mechanism and CO2gas fracture tandem high pressure alternating current-direct current breaker
CN105374615B (en) * 2015-12-09 2017-07-11 中国西电电气股份有限公司 A kind of phase selecting switching-on apparatus of high-voltage great-current
WO2019106840A1 (en) * 2017-12-01 2019-06-06 株式会社 東芝 Gas circuit breaker
EP3503151B1 (en) * 2017-12-20 2022-04-13 Hitachi Energy Switzerland AG Circuit breaker and method of performing a current breaking operation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08195148A (en) * 1995-01-19 1996-07-30 Meidensha Corp Puffer type gas-blast circuit breaker
TW280920B (en) * 1995-01-20 1996-07-11 Hitachi Seisakusyo Kk
JPH09231885A (en) * 1996-02-22 1997-09-05 Hitachi Ltd Gas-blast circuit-breaker
DE19832709C5 (en) * 1998-07-14 2006-05-11 Siemens Ag High voltage circuit breaker with one interrupter unit
DE19928080C5 (en) * 1999-06-11 2006-11-16 Siemens Ag High voltage circuit breaker with a discharge channel
DE10156535C1 (en) † 2001-11-14 2003-06-26 Siemens Ag breakers
DE10221576B4 (en) † 2002-05-08 2006-06-01 Siemens Ag Electrical switching device with a cooling device
ATE369614T1 (en) * 2004-06-07 2007-08-15 Abb Technology Ag CIRCUIT BREAKER
ATE508466T1 (en) 2006-03-14 2011-05-15 Abb Technology Ag SWITCH CHAMBER FOR A GAS INSULATED HIGH VOLTAGE SWITCH

Also Published As

Publication number Publication date
US7956306B2 (en) 2011-06-07
EP1930929A1 (en) 2008-06-11
CN101197220B (en) 2013-05-08
DE502006006123D1 (en) 2010-03-25
EP1930929B2 (en) 2013-01-30
CN101197220A (en) 2008-06-11
ATE457520T1 (en) 2010-02-15
US20080135522A1 (en) 2008-06-12
JP2008147183A (en) 2008-06-26

Similar Documents

Publication Publication Date Title
EP1930929B1 (en) High-tension circuit breaker with a metal tank filled with dielectric gas
EP2647024B1 (en) Electrical contact arrangement
DE2557197C2 (en) Vacuum switch
EP2396800B1 (en) Switchgear arrangement with a switch path
EP1403891B2 (en) Circuit breaker
EP2801100B1 (en) Switchgear arrangement
EP1835520B1 (en) Switching chamber for gasisolated high voltage switch
EP1691389A1 (en) Interrupting chamber for a gas insulated high voltage circuit breaker
EP1831906B1 (en) Heavy-duty circuit breaker featuring arc-resistant fault current conduction
EP1605485B1 (en) Circuit breaker
DE3107525C2 (en) Pressurized gas circuit breaker
EP1226597B1 (en) Compressed gas-blast circuit breaker
EP2316122B1 (en) High-voltage power switch with a switch gap
WO2016151002A1 (en) Insulating nozzle and electrical switching device comprising the insulating nozzle
DE102016226034A1 (en) Electrical switching device
EP2180492B1 (en) Switching chamber for a high voltage circuit breaker and high voltage circuit breaker
WO2013045233A1 (en) Circuit breaker unit
DE2836587C2 (en)
EP1811537A1 (en) Interrupting chamber for a gas insulated circuit breaker
DE3211272A1 (en) Metal-encapsulated compressed-gas circuit breaker
EP0773602A2 (en) Plug connection system
DE3904148A1 (en) METAL-ENCLOSED COMPRESSED GAS CIRCUIT BREAKER WITH A SHIFT ROD
EP0556478B1 (en) Disconnecting switch for a metal-sheathed gas-insulated high-tension installation
EP3803931B1 (en) Gas-insulated switch
EP2801101B1 (en) Switchgear arrangement

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

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 IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20081126

AKX Designation fees paid

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

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KRIEGEL, MARTIN

Inventor name: JONSSON, FREDRIK

Inventor name: YE, XIANGYANG

Inventor name: DAHLQUIST, ANDREAS

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

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

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502006006123

Country of ref document: DE

Date of ref document: 20100325

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20100210

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20100210

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

Ref country code: LT

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: 20100210

Ref country code: ES

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: 20100521

Ref country code: IS

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: 20100610

Ref country code: PT

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: 20100611

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

Ref country code: LV

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: 20100210

Ref country code: SI

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: 20100210

Ref country code: PL

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: 20100210

Ref country code: FI

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: 20100210

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: GR

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: 20100511

Ref country code: EE

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: 20100210

Ref country code: CY

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: 20100210

Ref country code: SE

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: 20100210

Ref country code: RO

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: 20100210

Ref country code: NL

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: 20100210

Ref country code: IE

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: 20100210

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

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

Ref country code: BG

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: 20100510

Ref country code: SK

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: 20100210

Ref country code: CZ

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: 20100210

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: SIEMENS AKTIENGESELLSCHAFT

Effective date: 20101105

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

Ref country code: DK

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: 20100210

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

Ref country code: IT

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: 20100210

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

BERE Be: lapsed

Owner name: ABB RESEARCH LTD.

Effective date: 20101231

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

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

Ref country code: MC

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

Effective date: 20101231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

R26 Opposition filed (corrected)

Opponent name: SIEMENS AG

Effective date: 20101105

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20101206

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

Ref country code: BE

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

Effective date: 20101231

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

Ref country code: CH

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

Effective date: 20101231

Ref country code: LI

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

Effective date: 20101231

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 NON-PAYMENT OF DUE FEES

Effective date: 20101206

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

Ref country code: LU

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

Effective date: 20101206

Ref country code: HU

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: 20100811

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

Ref country code: TR

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: 20100210

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20130130

AK Designated contracting states

Kind code of ref document: B2

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

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 457520

Country of ref document: AT

Kind code of ref document: T

Effective date: 20111206

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 502006006123

Country of ref document: DE

Effective date: 20130130

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

Ref country code: AT

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

Effective date: 20111206

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

Ref country code: LV

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: 20130130

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

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

Ref country code: FR

Payment date: 20151221

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170831

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: 20170102

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY SWITZERLAND AG, CH

Free format text: FORMER OWNER: ABB RESEARCH LTD., ZUERICH, CH

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006006123

Country of ref document: DE

Representative=s name: ZIMMERMANN & PARTNER PATENTANWAELTE MBB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: ABB SCHWEIZ AG, CH

Free format text: FORMER OWNER: ABB RESEARCH LTD., ZUERICH, CH

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: ABB POWER GRIDS SWITZERLAND AG, CH

Free format text: FORMER OWNER: ABB RESEARCH LTD., ZUERICH, CH

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006006123

Country of ref document: DE

Representative=s name: DENNEMEYER & ASSOCIATES S.A., DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY SWITZERLAND AG, CH

Free format text: FORMER OWNER: ABB SCHWEIZ AG, BADEN, CH

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY LTD, CH

Free format text: FORMER OWNER: ABB SCHWEIZ AG, BADEN, CH

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006006123

Country of ref document: DE

Representative=s name: DENNEMEYER & ASSOCIATES S.A., DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: ABB POWER GRIDS SWITZERLAND AG, CH

Free format text: FORMER OWNER: ABB SCHWEIZ AG, BADEN, CH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY SWITZERLAND AG, CH

Free format text: FORMER OWNER: ABB POWER GRIDS SWITZERLAND AG, BADEN, CH

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY LTD, CH

Free format text: FORMER OWNER: ABB POWER GRIDS SWITZERLAND AG, BADEN, CH

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230527

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

Ref country code: DE

Payment date: 20231214

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006006123

Country of ref document: DE

Representative=s name: DENNEMEYER & ASSOCIATES S.A., DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006006123

Country of ref document: DE

Owner name: HITACHI ENERGY LTD, CH

Free format text: FORMER OWNER: HITACHI ENERGY SWITZERLAND AG, BADEN, CH