EP0703593A2 - Polar column for an electrical circuit breaker - Google Patents

Polar column for an electrical circuit breaker Download PDF

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Publication number
EP0703593A2
EP0703593A2 EP95250213A EP95250213A EP0703593A2 EP 0703593 A2 EP0703593 A2 EP 0703593A2 EP 95250213 A EP95250213 A EP 95250213A EP 95250213 A EP95250213 A EP 95250213A EP 0703593 A2 EP0703593 A2 EP 0703593A2
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EP
European Patent Office
Prior art keywords
insulating material
material housing
housing
pole column
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95250213A
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German (de)
French (fr)
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EP0703593B1 (en
EP0703593A3 (en
Inventor
Manfred Meinherz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0703593A2 publication Critical patent/EP0703593A2/en
Publication of EP0703593A3 publication Critical patent/EP0703593A3/en
Application granted granted Critical
Publication of EP0703593B1 publication Critical patent/EP0703593B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • 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
    • H01H33/025—Terminal arrangements

Definitions

  • the invention relates to a pole column of an electrical circuit breaker with an insulating material housing, with an interrupter unit arranged in a first part of the insulating material housing, an insulating switching rod arranged in a second part of the insulating material housing for actuating the interrupter unit and a first and second electrical connection, the first electrical connection is arranged on the jacket side at the end of the second part facing the first part of the insulating material housing.
  • Such a pole column is known, for example, from the Siemens brochure "SF6 3AS1 circuit breaker 123-145-170 KV, 31.5 ... 40 kA".
  • the mutually adjacent ends of the first and the second part of the insulating material housing are provided with metallic flanges which are screwed together to produce a connection between the two parts.
  • One of the contact pieces of the interrupter unit is attached to the metallic flange assigned to the upper part of the insulating material housing.
  • the current flowing through the interrupter unit is conducted to the outside of the insulating material housing by means of the metallic flange.
  • the gas tightness of the electrical connections is ensured by metal flanges attached to the insulating housing parts.
  • the insulating housing is assembled from several parts on site.
  • the present invention has for its object to provide a pole column of the type mentioned, which is inexpensive, easy to assemble and reliable gas-tight.
  • the object is achieved in that the first part and the second part of the insulating material housing are integrally connected in the longitudinal direction of the pole column and that a jacket-side opening is provided in the insulating material housing for carrying out the first connection, against which at least the first part of the insulating material housing by means of at least one Bushing element is sealed gas-tight.
  • the insulating material housing is made in one piece, the constructive effort for the metal flanges between the two parts of the insulating material housing and the labor for the assembly of these metal flanges are eliminated in the production. In addition, the effort for seals is eliminated in the connection between the insulating material housing and the metal flanges. The assembly of the two parts of the insulating material housing is also no longer necessary.
  • At least one bushing element is necessary, which can be made of plastic or porcelain, for example, and which can be adapted to the shape of the cross section to be sealed.
  • a conductor is passed in a gastight manner, which is connected to the interrupter unit in the interior of the insulating material housing and represents an electrical connection on the outside of the insulating material housing.
  • the conductor can, for example, be glued or cast into the bushing element.
  • the lead-through element by means of an elastomeric seal, in particular is sealed in the form of a rubber ring on the insulating material housing.
  • the bushing element can have, for example, a groove into which a rubber ring, for example an O-ring, can be inserted.
  • the bushing element is glued gas-tight in the insulating material housing.
  • a further advantageous embodiment of the invention provides that a bulkhead insulator is provided as lead-through elements in the axial direction of the insulating material housing on both sides of the opening.
  • the respective bulkhead insulator then has the cross-sectional shape of the interior of the insulating material housing, for example the shape of a circular disk in the case of a hollow cylindrical insulating material housing.
  • the lead-through element has a sealing surface that surrounds the edge of the opening and is adapted to the inner wall of the insulating material housing, in particular a partially cylindrical sealing surface.
  • the bushing element has, for example, the shape of a cylindrical or partially cylindrical body in the case of a hollow cylindrical shape of the insulating material housing, the cylindrical outer surface of which abuts approximately on the inner surface of the insulating material housing.
  • a groove is provided which receives a closed sealing ring which, in the assembled state, surrounds the opening.
  • the bushing element can also have the shape of a hollow cylinder which is penetrated by the shift rod.
  • a further advantageous embodiment of the invention provides that the bushing element is designed as a hollow cylinder and has a piston seal in the axial direction on both sides of the opening, which rests gas-tight on the inner wall of the insulating material housing.
  • FIG. 1 the overall structure of a pole column with a breaker unit 19 and a drive rod 20 is shown schematically.
  • the insulating material housing 1, 2 rests on a base housing 21, in which a drivable crank 22 is mounted in a stationary manner, which transmits a pulling or pushing movement to the drive rod 20.
  • the insulating material housing 1, 2 of the pole column is connected gas-tight to the base housing 21 and sealed gas-tight by means of seals 23.
  • the insulating material housing is also sealed gas-tight by a cover plate 24 by means of seals.
  • the cover plate 24 carries a second electrical connection 25 which is connected to the interrupter unit 19 by means of the cover plate 24.
  • the interrupter unit 19 consists, in a manner known per se, of a double nozzle switch with two contact pieces 27, 28 opposite one another at a fixed distance, and a bridging contact piece 26, which conductively bridges the contact pieces 27, 28 in the switched-on state.
  • a piston-cylinder arrangement with a compression cylinder 29 and a fixed compression piston 30 is provided to provide compressed extinguishing gas.
  • the upper end of the shift rod 20 is connected to the bridging contact piece 26 and the compression cylinder 29 and drives them during the switching process.
  • the contact 28 facing the switching rod 20 is fastened to a metal plate 31, which in turn is fastened to the bushing element 14.
  • the electrical contact from the first connection 18 to the contact piece 28 is also established via this plate 31.
  • a single lead-through element 14 is provided in the form of a pipe section or hollow cylinder. This has a cylindrical outer surface, the diameter of which corresponds to the inner diameter of the hollow cylindrical one Isolierstoffgeophuses 1, 2 is adapted.
  • the lead-through element 14 must be somewhat smaller than the interior of the insulating material housing 1, 2 so that it can be inserted into it.
  • the lead-through element 14 has an annular groove 15, into which an annular rubber seal 16 is inserted.
  • the seal 16 surrounds the opening 4 in the insulating material housing 1, 2 and lies on the edge of the opening 4 in a gas-tight manner. In this way, the lead-through element 14 closes the opening in a gastight manner.
  • the bushing element 14 can be made of metal, for example, so that an electrical conductor 17 can be connected on the inside of the bushing element 14 and connected to the interrupter unit (not shown). On the outside, the bushing element 14 is connected to the first electrical connection 18 by means of a screw connection.
  • the lead-through element 14 has threaded bores 19.
  • the switch rod 20 does not have to pass through gas-tight bushings and, for example, can transmit the drive energy to the interrupter unit by means of an axial pushing or pulling movement.
  • FIG. 4 shows a lead-through element 32 which is similar to that shown in FIG. 2. Similar parts are provided with the same reference symbols in both figures.
  • the bushing element 32 is sealed gas-tight on the cylindrical inner wall of the insulating material housing 1, 2 on both sides of the opening 4, seen in the axial direction of the insulating material housing 1, 2, by means of two rubber seals 33, 34 running around its circumference.
  • the rubber seals are received in grooves in the lead-through element 32. Machining such circumferential grooves is easier than with one Groove on a cylindrical surface, such as shown in Figure 2.
  • FIG. 5 shows the first part 1 above and the second part 2 below of an insulating material housing.
  • a first electrical connection 3 is arranged between the first part 1 and the second part 2 and passes through an opening 4 of the insulating material housing 1, 2.
  • two bushing elements 5, 6 are provided, which consist for example of cast resin and are sealed by means of rubber sealing rings 7, 8 on the inner wall of the insulating housing 1, 2.
  • the lead-through element 5 is penetrated by an electrical conductor 9 which is connected on the one hand to the first electrical connection 3 and on the other hand to an interrupter unit which is not shown in FIG. 1 and is arranged in the first part 1 of the insulating material housing.
  • the conductor 9 is conductively connected to the electrical connection 3, for example by means of a screw connection.
  • the bushing elements 5, 6 are penetrated by a switching rod 10 made of insulating material, which transmits the drive movement from the second part 2 of the insulating material housing to the interrupter unit within the first part 1 of the insulating material housing. This can be done, for example, by rotating the shift rod about its longitudinal axis.
  • the shift rod 10 is sealed within the bushing elements 5, 6 by means of seals 11, 12.
  • the insulating material housing can be made of porcelain, for example, but it is also possible to design it as a plastic tube, in particular as a fiber-reinforced plastic tube with a silicone rubber coating, wherein the shielding ribs 13 can be integrated in the silicone rubber coating.

Landscapes

  • Insulators (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Breakers (AREA)

Abstract

The pole column includes a plastic housing (1,2). A disconnection unit (19) is in a first part (1) of the housing. A rod (20) to operate disconnection unit is in a second part (2)of the housing. The first (18) of two electrical contacts (18,25) is arranged on the outer cover part of the end of the second housing part which faces the first housing part. The first and second parts of the plastic housing are joined together to form one piece in the lengthways direction of the pole column. An opening (4) is provided in the outer cover of the housing for the passage of the first contact. The first part of the housing is cut off from the opening so as to be gas-tight by a lead-through element (14).

Description

Die Erfindung bezieht sich auf eine Polsäule eines elektrischen Leistungsschalters mit einem Isolierstoffgehäuse, mit einer in einem ersten Teil des Isolierstoffgehäuses angeordneten Unterbrechereinheit, einer in einem zweiten Teil des Isolierstoffgehäuses angeordneten, isolierenden Schaltstange zur Betätigung der Unterbrechereinheit und einem ersten und zweiten elektrischen Anschluß, wobei der erste elektrische Anschluß an dem dem ersten Teil des Isolierstoffgehäuses zugewandten Ende des zweiten Teils mantelseitig angeordnet ist.The invention relates to a pole column of an electrical circuit breaker with an insulating material housing, with an interrupter unit arranged in a first part of the insulating material housing, an insulating switching rod arranged in a second part of the insulating material housing for actuating the interrupter unit and a first and second electrical connection, the first electrical connection is arranged on the jacket side at the end of the second part facing the first part of the insulating material housing.

Eine derartige Polsäule ist beispielsweise aus dem Siemens Prospekt "SF₆-Leistungsschalter 3AS1 123-145-170 KV,31,5...40 kA" bekannt.Such a pole column is known, for example, from the Siemens brochure "SF₆ 3AS1 circuit breaker 123-145-170 KV, 31.5 ... 40 kA".

Bei der bekannten Polsäule sind die aneinander angrenzenden Enden des ersten und des zweiten Teils des Isolierstoffgehäuses mit metallischen Flanschen versehen, die zur Herstellung einer Verbindung zwischen den beiden Teilen miteinander verschraubt sind. An dem dem oberen Teil des Isolierstoffgehäuses zugeordneten metallischen Flansch ist eines der Kontaktstücke der Unterbrechereinheit befestigt. Mittels des metallischen Flansches wird der durch die Unterbrechereinheit fließende Strom zur Außenseite des Isolierstoffgehäuses zu einem Anschluß geleitet.In the known pole column, the mutually adjacent ends of the first and the second part of the insulating material housing are provided with metallic flanges which are screwed together to produce a connection between the two parts. One of the contact pieces of the interrupter unit is attached to the metallic flange assigned to the upper part of the insulating material housing. The current flowing through the interrupter unit is conducted to the outside of the insulating material housing by means of the metallic flange.

Bei der bekannten Polsäule wird die Gasdichtigkeit der elektrischen Anschlüsse durch an den Isolierstoffgehäuseteilen befestigte Metallflansche gewährleistet. Das Isolierstoffgehäuse wird vor ort aus mehreren Teilen zusammengebaut.In the known pole column, the gas tightness of the electrical connections is ensured by metal flanges attached to the insulating housing parts. The insulating housing is assembled from several parts on site.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Polsäule der eingangs genannten Art zu schaffen, die kostengünstig, leicht zu montieren und zuverlässig gasdicht ist.The present invention has for its object to provide a pole column of the type mentioned, which is inexpensive, easy to assemble and reliable gas-tight.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der erste Teil und der zweite Teil des Isolierstoffgehäuses in Längsrichtung der Polsäule einstückig zusammenhängen und daß zur Durchführung des ersten Anschlusses in dem Isolierstoffgehäuse eine mantelseitige Öffnung vorgesehen ist, gegen die wenigstens der erste Teil des Isolierstoffgehäuses mittels wenigstens eines Durchführungselementes gasdicht abgeschottet ist.The object is achieved in that the first part and the second part of the insulating material housing are integrally connected in the longitudinal direction of the pole column and that a jacket-side opening is provided in the insulating material housing for carrying out the first connection, against which at least the first part of the insulating material housing by means of at least one Bushing element is sealed gas-tight.

Dadurch, daß das Isolierstoffgehäuse einteilig ausgebildet ist, entfällt einerseits bei der Herstellung der konstruktive Aufwand für die Metallflansche zwischen den beiden Teilen des Isolierstoffgehäuses und der Arbeitsaufwand für die Montage dieser Metallflansche. Außerdem entfällt bei der Verbindung zwischen dem Isolierstoffgehäuse und den Metallflanschen der Aufwand für Dichtungen. Auch der Zusammenbau der beiden Teile des Isolierstoffgehäuses ist nicht mehr notwendig.Due to the fact that the insulating material housing is made in one piece, the constructive effort for the metal flanges between the two parts of the insulating material housing and the labor for the assembly of these metal flanges are eliminated in the production. In addition, the effort for seals is eliminated in the connection between the insulating material housing and the metal flanges. The assembly of the two parts of the insulating material housing is also no longer necessary.

Es ist zum Abdichten des Isolierstoffgehäuses gegenüber der Öffnung wenigstens ein Durchführungselement notwendig, das beispielsweise aus Kunststoff oder aus Porzellan bestehen kann und an die Form des abzuschließenden Querschnittes angepaßt sein kann. Durch dieses Durchführungselement ist gasdicht ein Leiter durchgeführt, der im Inneren des Isolierstoffgehäuses mit der Unterbrechereinheit verbunden ist und an der Außenseite des Isolierstoffgehäuses einen elektrischen Anschluß darstellt. Der Leiter kann beispielsweise in das Durchführungselement eingeklebt oder eingegossen sein.To seal the insulating material housing from the opening, at least one bushing element is necessary, which can be made of plastic or porcelain, for example, and which can be adapted to the shape of the cross section to be sealed. Through this lead-through element, a conductor is passed in a gastight manner, which is connected to the interrupter unit in the interior of the insulating material housing and represents an electrical connection on the outside of the insulating material housing. The conductor can, for example, be glued or cast into the bushing element.

Es kann außerdem vorteilhaft vorgesehen sein, daß das Durchführungselement mittels einer elastomeren Dichtung, insbesondere in Form eines Gummirings an dem Isolierstoffgehäuse abgedichtet ist.It can also be advantageously provided that the lead-through element by means of an elastomeric seal, in particular is sealed in the form of a rubber ring on the insulating material housing.

Das Durchführungselement kann zu diesem Zweck beispielsweise eine Nut aufweisen, in die ein Gummiring, beispielsweise ein O-Ring einlegbar ist.For this purpose, the bushing element can have, for example, a groove into which a rubber ring, for example an O-ring, can be inserted.

Es kann aber auch vorteilhaft vorgesehen sein, daß das Durchführungselement in das Isolierstoffgehäuse gasdicht eingeklebt ist.However, it can also be advantageously provided that the bushing element is glued gas-tight in the insulating material housing.

Dies hat beispielsweise den Vorteil, daß das Durchführungselement mittels eines Klebers einerseits abgedichtet und andererseits mechanisch fixiert wird.This has the advantage, for example, that the lead-through element is sealed on the one hand by means of an adhesive and mechanically fixed on the other hand.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß als Durchführungselemente in axialer Richtung des Isolierstoffgehäuses zu beiden Seiten der Öffnung je ein Schottisolator vorgesehen ist.A further advantageous embodiment of the invention provides that a bulkhead insulator is provided as lead-through elements in the axial direction of the insulating material housing on both sides of the opening.

Der jeweilige Schottisolator weist dann die Querschnittsform des Innenraums des Isolierstoffgehäuses auf, so bei einem hohlzylindrischen Isolierstoffgehäuses beispielsweise die Form einer Kreisscheibe.The respective bulkhead insulator then has the cross-sectional shape of the interior of the insulating material housing, for example the shape of a circular disk in the case of a hollow cylindrical insulating material housing.

Es kann aber auch vorteilhaft vorgesehen sein, daß das Durchführungselement eine den Rand der Öffnung umgebende, an die Innenwand des Isolierstoffgehäuses angepaßte, insbesondere teilzylindrische Dichtfläche mit einer Dichtung aufweist.However, it can also be advantageously provided that the lead-through element has a sealing surface that surrounds the edge of the opening and is adapted to the inner wall of the insulating material housing, in particular a partially cylindrical sealing surface.

In diesem Fall ist nur ein einziges Durchführungselement für eine Öffnung notwendig und dieses wird von der Innenseite des Isolierstoffgehäuses derart gegen die Öffnung gedrückt, daß die Dichtfläche den Rand der Öffnung umgibt und daß der Leiter, der das Durchführungselement durchsetzt, durch die Öffnung hindurchragt.In this case, only a single bushing element is necessary for an opening and this is pressed against the opening from the inside of the insulating material housing in such a way that the sealing surface surrounds the edge of the opening and that the conductor which passes through the bushing element projects through the opening.

Das Durchführungselement hat in diesem Fall beispielsweise bei einer hohlzylindrischen Form des Isolierstoffgehäuses die Gestalt eines zylindrischen oder teilzylindrischen Körpers, dessen zylindrische Außenfläche sich in etwa an die Innenfläche des Isolierstoffgehäuses anlegt. In der Außenfläche des Durchführungselements ist beispielsweise eine Nut vorgesehen, die einen geschlossenen Dichtring aufnimmt, der im montierten Zustand die Öffnung umgibt. Beispielsweise kann das Durchführungselement auch die Form eines Hohlzylinders aufweisen, der von der Schaltstange durchsetzt ist.In this case, the bushing element has, for example, the shape of a cylindrical or partially cylindrical body in the case of a hollow cylindrical shape of the insulating material housing, the cylindrical outer surface of which abuts approximately on the inner surface of the insulating material housing. In the outer surface of the bushing element, for example, a groove is provided which receives a closed sealing ring which, in the assembled state, surrounds the opening. For example, the bushing element can also have the shape of a hollow cylinder which is penetrated by the shift rod.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß das Durchführungselement als Hohlzylinder ausgebildet ist und in axialer Richtung auf beiden Seiten der Öffnung je eine Kolbendichtung aufweist, die an der Innenwand des Isolierstoffgehäuses gasdicht anliegt.A further advantageous embodiment of the invention provides that the bushing element is designed as a hollow cylinder and has a piston seal in the axial direction on both sides of the opening, which rests gas-tight on the inner wall of the insulating material housing.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung gezeigt und anschließend beschrieben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and then described.

Dabei zeigt

  • Figur 1 eine Polsäule in einer Gesamtansicht,
  • Figur 2 einen Teil eines erfindungsgemäßen Isolierstoffgehäuses mit einem einzigen Durchführungselement,
  • Figur 3 ein Durchführungselement aus der Figur 2,
  • Figur 4 einen Teil eines Isolierstoffgehäuses mit einem einzigen Durchführungselement mit zwei Kolbendichtungen,
  • Figur 5 schematisch einen Teil eines erfindungsgemäßen Isolierstoffgehäuses mit zwei Durchführungselementen.
It shows
  • FIG. 1 an overall view of a pole column,
  • FIG. 2 shows part of an insulating material housing according to the invention with a single bushing element,
  • FIG. 3 shows a lead-through element from FIG. 2,
  • FIG. 4 shows part of an insulating material housing with a single bushing element with two piston seals,
  • Figure 5 schematically shows a part of an insulating material housing according to the invention with two bushing elements.

In der Figur 1 ist schematisch der Gesamtaufbau einer Polsäule mit einer Unterbrechereinheit 19 und einer Antriebsstange 20 dargestellt.In Figure 1, the overall structure of a pole column with a breaker unit 19 and a drive rod 20 is shown schematically.

Das Isolierstoffgehäuse 1, 2 ruht auf einem Basisgehäuse 21, in dem eine antreibbare Kurbel 22 ortsfest gelagert ist, die eine Zug- bzw. Schubbewegung auf die Antriebsstange 20 überträgt.The insulating material housing 1, 2 rests on a base housing 21, in which a drivable crank 22 is mounted in a stationary manner, which transmits a pulling or pushing movement to the drive rod 20.

Das Isolierstoffgehäuse 1, 2 der Polsäule ist gasdicht mit dem Basisgehäuse 21 verbunden und mittels Dichtungen 23 gasdicht abgeschlossen.The insulating material housing 1, 2 of the pole column is connected gas-tight to the base housing 21 and sealed gas-tight by means of seals 23.

An seinem oberen Ende ist das Isolierstoffgehäuse durch eine Deckplatte 24 ebenfalls mittels Dichtungen gasdicht abgeschlossen. Die Deckplatte 24 trägt einen zweiten elektrischen Anschluß 25, der mittels der Deckplatte 24 mit der Unterbrechereinheit 19 verbunden ist.At its upper end, the insulating material housing is also sealed gas-tight by a cover plate 24 by means of seals. The cover plate 24 carries a second electrical connection 25 which is connected to the interrupter unit 19 by means of the cover plate 24.

Die Unterbrechereinheit 19 besteht in an sich bekannter Weise aus einen Doppeldüsenschalter mit zwei einander in festem Abstand gegenüberstehenden Kontaktstücken 27 28 und einem Überbrückungskontaktstück 26, das die Kontaktstücke 27, 28 im Einschaltzustand leitend überbrückt. Außerdem ist eine Kolben-Zylinderanordnung mit einem Kompressionszylinder 29 und einem feststehenden Kompressionskolben 30 zur Bereitstellung von komprimiertem Löschgas vorgesehen. Das obere Ende der Schaltstange 20 ist mit dem Ürberbückungskontaktstück 26 und dem Kompressionszylinder 29 verbunden und treibt diese während des Schaltvorgangs an. Der der Schaltstange 20 zugewandte Kontakt 28 ist auf einer Metallplatte 31 befestigt, die ihrerseits an dem Durchführungselement 14 befestigt ist. Über diese Platte 31 wird auch der elektrische Kontakt von dem ersten Anschluß 18 zu dem Kontaktstück 28 hergestellt.The interrupter unit 19 consists, in a manner known per se, of a double nozzle switch with two contact pieces 27, 28 opposite one another at a fixed distance, and a bridging contact piece 26, which conductively bridges the contact pieces 27, 28 in the switched-on state. In addition, a piston-cylinder arrangement with a compression cylinder 29 and a fixed compression piston 30 is provided to provide compressed extinguishing gas. The upper end of the shift rod 20 is connected to the bridging contact piece 26 and the compression cylinder 29 and drives them during the switching process. The contact 28 facing the switching rod 20 is fastened to a metal plate 31, which in turn is fastened to the bushing element 14. The electrical contact from the first connection 18 to the contact piece 28 is also established via this plate 31.

Gemäß den Figuren 2 und 3 ist ein einziges Durchführungselement 14 in Form eines Rohrstückes bzw. Hohlzylinders vorgesehen. Dieses weist eine zylindrische Außenoberfläche auf, deren Durchmesser dem Innendurchmesser des hohlzylindrischen Isolierstoffgehäuses 1, 2 angepaßt ist. Das Durchführungselement 14 muß etwas kleiner sein als der Innenraum des Isolierstoffgehäuses 1, 2, so daß es in dieses eingeschoben werden kann.According to FIGS. 2 and 3, a single lead-through element 14 is provided in the form of a pipe section or hollow cylinder. This has a cylindrical outer surface, the diameter of which corresponds to the inner diameter of the hollow cylindrical one Isolierstoffgehäuses 1, 2 is adapted. The lead-through element 14 must be somewhat smaller than the interior of the insulating material housing 1, 2 so that it can be inserted into it.

Das Durchführungselement 14 weist eine ringförmige Nut 15 auf, in die eine ringförmige Gummidichtung 16 eingelegt wird. Die Dichtung 16 umgibt im montierten Zustand die Öffnung 4 in dem Isolierstoffgehäuse 1, 2 und liegt auf dem Rand der Öffnung 4 gasdicht auf. Auf diese Weise schließt das Durchführungselement 14 die Öffnung gasdicht ab. Das Durchführungselement 14 kann beispielsweise aus Metall bestehen, so daß ein elektrischer Leiter 17 auf der Innenseite des Durchführungselementes 14 angeschlossen und mit der nicht dargestellten Unterbrechereinheit verbunden werden kann. Auf der Außenseite ist das Durchführungselement 14 mittels einer Verschraubung mit dem ersten elektrischen Anschluß 18 verbunden. Hierzu weist das Durchführungselement 14 Gewindebohrungen 19 auf.The lead-through element 14 has an annular groove 15, into which an annular rubber seal 16 is inserted. In the assembled state, the seal 16 surrounds the opening 4 in the insulating material housing 1, 2 and lies on the edge of the opening 4 in a gas-tight manner. In this way, the lead-through element 14 closes the opening in a gastight manner. The bushing element 14 can be made of metal, for example, so that an electrical conductor 17 can be connected on the inside of the bushing element 14 and connected to the interrupter unit (not shown). On the outside, the bushing element 14 is connected to the first electrical connection 18 by means of a screw connection. For this purpose, the lead-through element 14 has threaded bores 19.

Die Schaltstange 20 muß in diesem Fall keine gasdichten Durchführungen passieren und kann beispielsweise die Antriebsenergie durch eine axiale Schub- oder Zugbewegung auf die Unterbrechereinheit übertragen.In this case, the switch rod 20 does not have to pass through gas-tight bushings and, for example, can transmit the drive energy to the interrupter unit by means of an axial pushing or pulling movement.

In der Figur 4 ist ein Durchführungselement 32 gezeigt, das dem in der Figur 2 gezeigten ähnelt. Gleichartige Teile sind in beiden Figuren mit gleichen Bezugszeichen versehen.FIG. 4 shows a lead-through element 32 which is similar to that shown in FIG. 2. Similar parts are provided with the same reference symbols in both figures.

Das Durchführungselement 32 ist mittels zweier an seinem Umfang umlaufender Gummidichtungen 33, 34 zu beiden Seiten der Öffnung 4, in axialer Richtung des Isolierstoffgehäuses 1, 2 gesehen, gasdicht an der zylindrischen Innenwand des Isolierstoffgehäuses 1, 2 abgedichtet. Die Gummidichtungen werden in Nuten des Durchführungselementes 32 aufgenommen. Die Bearbeitung solcher umlaufender Nuten ist einfacher als bei einer Nut auf einer zylindrischen Oberfläche, wie beispielsweise in der Figur 2 gezeigt.The bushing element 32 is sealed gas-tight on the cylindrical inner wall of the insulating material housing 1, 2 on both sides of the opening 4, seen in the axial direction of the insulating material housing 1, 2, by means of two rubber seals 33, 34 running around its circumference. The rubber seals are received in grooves in the lead-through element 32. Machining such circumferential grooves is easier than with one Groove on a cylindrical surface, such as shown in Figure 2.

In der Figur 5 ist oben der erste Teil 1 und unten der zweite Teil 2 eines Isolierstoffgehäuses dargestellt. Zwischen dem ersten Teil 1 und dem zweiten Teil 2 ist ein erster elektrischer Anschluß 3 angeordnet, der eine Öffnung 4 des Isolierstoffgehäuses 1, 2 durchsetzt.FIG. 5 shows the first part 1 above and the second part 2 below of an insulating material housing. A first electrical connection 3 is arranged between the first part 1 and the second part 2 and passes through an opening 4 of the insulating material housing 1, 2.

Zum gasdichten Abschluß der Öffnung 4 gegenüber dem Innenraum des Isolierstoffgehäuses 1, 2 sind zwei Durchführungselemente 5, 6 vorgesehen, die beispielsweise aus Gießharz bestehen und mittels Dichtungsringen 7, 8 aus Gummi an der Innenwand des Isolierstoffgehäuses 1, 2 abgedichtet sind. Das Durchführungselement 5 ist von einem elektrischen Leiter 9 durchsetzt, der einerseits mit dem ersten elektrischen Anschluß 3, andererseits mit einer in der Figur 1 nicht dargestellten, im ersten Teil 1 des Isolierstoffgehäuses angeordneten Unterbrechereinheit verbunden ist. Der Leiter 9 ist mit dem elektrischen Anschluß 3 beispielsweise mittels einer Schraubverbindung leitend verbunden.For the gas-tight closure of the opening 4 with respect to the interior of the insulating housing 1, 2, two bushing elements 5, 6 are provided, which consist for example of cast resin and are sealed by means of rubber sealing rings 7, 8 on the inner wall of the insulating housing 1, 2. The lead-through element 5 is penetrated by an electrical conductor 9 which is connected on the one hand to the first electrical connection 3 and on the other hand to an interrupter unit which is not shown in FIG. 1 and is arranged in the first part 1 of the insulating material housing. The conductor 9 is conductively connected to the electrical connection 3, for example by means of a screw connection.

Die Durchführungselemente 5, 6 sind von einer Schaltstange 10 aus Isolierstoff durchsetzt, die die Antriebsbewegung von dem zweiten Teil 2 des Isolierstoffgehäuses aus zu der Unterbrechereinheit innerhalb des ersten Teils 1 des Isolierstoffgehäuses überträgt. Dies kann beispielsweise durch eine Drehung der Schaltstange um ihre Längsachse erfolgen. Die Schaltstange 10 ist innerhalb der Durchführungselemente 5, 6 mittels Dichtungen 11, 12 abgedichtet.The bushing elements 5, 6 are penetrated by a switching rod 10 made of insulating material, which transmits the drive movement from the second part 2 of the insulating material housing to the interrupter unit within the first part 1 of the insulating material housing. This can be done, for example, by rotating the shift rod about its longitudinal axis. The shift rod 10 is sealed within the bushing elements 5, 6 by means of seals 11, 12.

Das Isolierstoffgehäuse kann beispielsweise aus Porzellan bestehen, es ist jedoch auch möglich, es als Kunststoffrohr, insbesondere als faserverstärktes Kunststoffrohr mit einem Silikongummiüberzug auszubilden, wobei die Schirmrippen 13 in den Silikongummiüberzug integriert sein können.The insulating material housing can be made of porcelain, for example, but it is also possible to design it as a plastic tube, in particular as a fiber-reinforced plastic tube with a silicone rubber coating, wherein the shielding ribs 13 can be integrated in the silicone rubber coating.

Claims (6)

Polsäule eines elektrisches Leistungsschalters mit einem Isolierstoffgehäuse (1,2), mit einer in einem ersten Teil (1) des Isolierstoffgehäuses (1,2) angeordneten Unterbrechereinheit (19), einer in einem zweiten Teil (2) des Isolierstoffgehäuses (1,2) angeordneten, isolierenden Schaltstange (10,20) zur Betätigung der Unterbrechereinheit (19) und mit einem ersten und zweiten elektrischen Anschluß (3,18,25), wobei der erste elektrische Anschluß (3,18) an dem dem ersten Teil (1) des Isolierstoffgehäuses (1,2) zugewandten Ende des zweiten Teils (2) mantelseitig angeordnet ist,
dadurch gekennzeichnet, daß
der erste Teil (1) und der zweite Teil (2) des Isolierstoffgehäuses (1,2) in Längsrichtung der Polsäule einstückig zusammenhängen und daß zur Durchführung des ersten Anschlusses (3,18) in dem Isolierstoffgehäuse (1,2) eine mantelseitige Öffnung (4) vorgesehen ist, gegen die wenigstens der erste Teil (1) des Isolierstoffgehäuses (1,2) mittels wenigstens eines Durchführungselementes (5,6,14, 32) gasdicht abgeschottet ist.Pole column of an electrical circuit breaker with an insulating material housing (1, 2), with an interrupter unit (19) arranged in a first part (1) of the insulating material housing (1, 2), one in a second part (2) of the insulating material housing (1, 2) arranged, isolating switching rod (10, 20) for actuating the interrupter unit (19) and having a first and second electrical connection (3, 18, 25), the first electrical connection (3, 18) being connected to the first part (1) the end of the second part (2) facing the insulating material housing (1, 2) is arranged on the jacket side,
characterized in that
the first part (1) and the second part (2) of the insulating material housing (1, 2) are integrally connected in the longitudinal direction of the pole column and that for the implementation of the first connection (3, 18) in the insulating material housing (1, 2) an opening on the jacket side ( 4) is provided, against which at least the first part (1) of the insulating material housing (1, 2) is sealed off in a gas-tight manner by means of at least one bushing element (5, 6, 14, 32). Polsäule nach Anspruch 1,
dadurch gekennzeichnet, daß
das/die Durchührungselement/e (5,6,14) mittels einer elastomeren Dichtung (7,8,16), insbesondere in Form eines Gummiringes an dem Isolierstoffgehäuse (1,2) abgedichtet ist/sind.Pole column according to claim 1,
characterized in that
the bushing element (s) (5, 6, 14) is / are sealed to the insulating material housing (1, 2) by means of an elastomeric seal (7, 8, 16), in particular in the form of a rubber ring. Polsäule nach Anspruch 1,
dadurch gekennzeichnet, daß
das/die Durchführungselement/e (5,6,14) in das Isolierstoffgehäuse (1,2) gasdicht eingeklebt ist/sind.Pole column according to claim 1,
characterized in that
the bushing element (s) (5, 6, 14) is / are glued gas-tight in the insulating material housing (1, 2). Polsäule nach Anspruch 1 oder einem der folgenden,
dadurch gekennzeichnet, daß
als Durchführungselemente (5,6) in axialer Richtung des Isolierstoffgehäuses (1,2) zu beiden Seiten der Öffnung (4) je ein Schottisolator vorgesehen ist.Pole column according to claim 1 or one of the following,
characterized in that
as bushing elements (5,6) in the axial direction of the insulating material housing (1,2) a bulkhead insulator is provided on both sides of the opening (4). Polsäule nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß
das Durchführungselement (14) eine den Rand der Öffnung (4) umgebende, an die Innenwand des Isolierstoffgehäuses (1,2) angepaßte, insbesondere teilzylindrische Dichtfläche mit einer Dichtung (16) aufweist.Pole column according to one of claims 1 to 3,
characterized in that
the lead-through element (14) has a sealing surface (16) that surrounds the edge of the opening (4) and is adapted to the inner wall of the insulating material housing (1, 2), in particular a partially cylindrical sealing surface. Polsäule nach einen der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß
das Durchführungselement (32) als Hohlzylinder ausgebildet ist und in axialer Richtung auf beiden Seiten der Öffnung (4) je eine Kolbendichtung aufweist, die an der Innenwand des Isolierstoffgehäuses (1, 2) gasdicht anliegt.Pole column according to one of claims 1 to 3,
characterized in that
the bushing element (32) is designed as a hollow cylinder and has a piston seal in the axial direction on both sides of the opening (4), which rests gas-tight on the inner wall of the insulating material housing (1, 2).
EP95250213A 1994-09-20 1995-08-29 Polar column for an electrical circuit breaker Expired - Lifetime EP0703593B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4435359A DE4435359C2 (en) 1994-09-20 1994-09-20 Pole column of an electrical circuit breaker
DE4435359 1994-09-20

Publications (3)

Publication Number Publication Date
EP0703593A2 true EP0703593A2 (en) 1996-03-27
EP0703593A3 EP0703593A3 (en) 1998-03-04
EP0703593B1 EP0703593B1 (en) 2001-02-28

Family

ID=6529872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95250213A Expired - Lifetime EP0703593B1 (en) 1994-09-20 1995-08-29 Polar column for an electrical circuit breaker

Country Status (2)

Country Link
EP (1) EP0703593B1 (en)
DE (2) DE4435359C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020104122A1 (en) * 2018-11-20 2020-05-28 Siemens Aktiengesellschaft Isolation device and instrument transformer having an isolation device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19601053C1 (en) * 1996-01-05 1997-03-13 Siemens Ag Outdoor HV circuit-breaker
DE19715313C1 (en) * 1997-04-07 1998-09-03 Siemens Ag HV circuit-breaker with gas-blast arc extinction
DE19715314C1 (en) * 1997-04-07 1998-10-29 Siemens Ag HV circuit breaker with contact device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484665A (en) * 1947-11-18
DE3843943A1 (en) * 1988-12-24 1990-06-28 Asea Brown Boveri Converter housing and a method for producing bushing arrangements on this housing
WO1992009997A1 (en) * 1990-11-21 1992-06-11 Elin Energieversorgung Gesellschaft M. B. H. Vacuum switch pole
DE9017054U1 (en) * 1990-12-18 1991-03-07 ABB Patent GmbH, 6800 Mannheim Switch pole arrangement
WO1992011651A1 (en) * 1990-12-21 1992-07-09 Elin Energieversorgung Gesellschaft M.B.H. Vacuum switch pole
DE4108677A1 (en) * 1991-03-16 1992-09-17 Reiss Int Gmbh Feedthrough cable connection sealed against dust and moisture - has central portion which is ruptured and turned back to form tight seal around inserted cable
DE4201823A1 (en) * 1992-01-21 1993-07-22 Siemens Ag Load-breaking switch unit - has coupling device connecting drive mechanism to control shaft extending at incline to rotational axis of drive shaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020104122A1 (en) * 2018-11-20 2020-05-28 Siemens Aktiengesellschaft Isolation device and instrument transformer having an isolation device

Also Published As

Publication number Publication date
EP0703593B1 (en) 2001-02-28
DE4435359A1 (en) 1996-03-21
EP0703593A3 (en) 1998-03-04
DE4435359C2 (en) 1998-07-30
DE59509054D1 (en) 2001-04-05

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