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EP0196503A1 - Vacuum switch casing - Google Patents

Vacuum switch casing Download PDF

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Publication number
EP0196503A1
EP0196503A1 EP86103177A EP86103177A EP0196503A1 EP 0196503 A1 EP0196503 A1 EP 0196503A1 EP 86103177 A EP86103177 A EP 86103177A EP 86103177 A EP86103177 A EP 86103177A EP 0196503 A1 EP0196503 A1 EP 0196503A1
Authority
EP
European Patent Office
Prior art keywords
jacket
vacuum interrupter
interrupter
core body
insert
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
EP86103177A
Other languages
German (de)
French (fr)
Other versions
EP0196503B1 (en
Inventor
Heinz Zdora
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0196503A1 publication Critical patent/EP0196503A1/en
Application granted granted Critical
Publication of EP0196503B1 publication Critical patent/EP0196503B1/en
Expired legal-status Critical Current

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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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/54—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/03—Arrangements for preventing or mitigating effects of implosion of vessels or containers
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings

Definitions

  • the invention relates to an encapsulation of a vacuum interrupter according to the preamble of claim 1.
  • a method for producing a plastic tube reinforced with fibers, threads impregnated with curable plastic being applied to a core at a predetermined winding angle and the plastic then being cured European Patent Specification ooo9oo7.
  • the object of the invention is to increase the compressive strength of the encapsulation of the type mentioned in the preamble of claim 1 in a simple manner and at the same time to reduce its construction volume in a material-saving manner.
  • 1 denotes a vacuum interrupter of a conventional type
  • the vacuum interrupter 1 is enclosed by a pressure-resistant jacket 2 made of reinforced hardenable cast resin.
  • Cavities located between the vacuum interrupter 1 and the jacket 2 are filled with an insert 3, also made of cast resin.
  • the jacket 2 is closed on each end with a flange 4.
  • Each of the flanges 4 has a neck 4 a, which is encompassed by the jacket 2
  • an annular element 6 is additionally arranged on each end face of the vacuum interrupter 1, which fills a cavity between the neck 4 a of the associated flange 4 and the vacuum interrupter 1
  • Preformed elements serve as insert 3, in the example shown two rings; which are glued to the vacuum interrupter 1 by means of an adhesive 5 made of casting resin, which fills the annular grooves 1 a of the vacuum interrupter 1
  • the elements forming the insert 3 are shaped such that, together with portions of the vacuum interrupter 1 which they do not cover, they result in a rotationally symmetrical core body which, as shown, has the geometry of a so-called bomb tube or melting tube
  • the jacket 2 is not preformed, but rather a winding body formed on the core body.
  • a winding body here is a body which arises from the fact that threads or tapes impregnated with casting resin are wound onto a core at a predetermined winding angle and the casting resin is then cured. Due to the special shape of the core body formed from the switching tube 1 and the insert 3, the jacket 2 is given a contour when it is created, which follows the contour of the core body in the manner of an envelope curve.
  • the decisive factor for increasing the compressive strength of the encapsulation described is, on the one hand, the selected shape of the casing 2 and, on the other hand, the design of the casing 2 as a winding body.
  • a cuff 7 preferably made of copper, is arranged between a steam shield 1 b of the vacuum interrupter 1 and the jacket 2.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

1. Casing for a vacuum interrupter having a flame-proof jacket (2) of reinforced hardenable plastics material enclosing the interrupter (1), wherein the spaces between the jacket (2) and the vacuum interrupter (1) are filled with plastics material, and having flanges (4) sealing both ends of the jacket (2), characterised in that the spaces between the jacket (2) and the vacuum interrupter (1) are filled with inserts (3) of preformed elements which when in position extend the sections of the interrupter (1) not covered by them to a rounded, rotationally symmetrical core body which has the approximate geometry of a so-called bomb or Carius tube or fusion tube, and in that the jacket (2) is a body formed in situ by winding on to the core body and adjacent thereto.

Description

Die Erfindung bezieht sich auf eine Kapselung einer Vakuumschaltröhre nach dem Oberbegriff des Anspruches 1.The invention relates to an encapsulation of a vacuum interrupter according to the preamble of claim 1.

Es ist bereits eine Kapselung einer Vakuumschaltröhre der im Oberbegriff des Anspruches 1 genannten Art bekannt Die Kapselung ist erforderlich, wenn die zugehörige Schaltröhre in explosionsgefährdeten Räumen eingesetzt werden soll, beispielsweise im Untertage-Bergbau (DE-Gbm 8403 264).There is already an encapsulation of a vacuum interrupter of the type mentioned in the preamble of claim 1. The encapsulation is required if the associated interrupter is to be used in potentially explosive areas, for example in underground mining (DE-Gbm 8403 264).

Es ist auch ein Verfahren zum Herstellen eines mit Fasern verstärkten Kunststoffrohres bekannt, wobei mit härtbarem Kunststoff getränkte Fäden unter einem vorgegebenen Wikkelwinkel auf einen Kern aufgebracht werden und der Kunststoff sodann ausgehärtet wird (Europäische Patentschrift o oo9 oo7).A method is also known for producing a plastic tube reinforced with fibers, threads impregnated with curable plastic being applied to a core at a predetermined winding angle and the plastic then being cured (European Patent Specification ooo9oo7).

Aufgabe der Erfindung ist es, die Druckfestigkeit der Kapselung der im Oberbegriff des Anspruches 1 genannten Art auf einfache Weise zu erhöhen und zugleich ihr Bauvolumen materialsparend zu vermindern.The object of the invention is to increase the compressive strength of the encapsulation of the type mentioned in the preamble of claim 1 in a simple manner and at the same time to reduce its construction volume in a material-saving manner.

Die gestellte Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruches 1 angegebene Ausbildung gelöstThe object is achieved according to the invention by the training specified in the characterizing part of claim 1

Zweckmäßige Aus-und Weiterbildungen des Erfindungsgegenstandes sind in den Ansprüchen 2 bis 5 angegeben.Appropriate developments and further developments of the subject matter of the invention are specified in claims 2 to 5.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung rein schematisch in einem Aufriß im Schnitt dargestelltAn embodiment of the invention is shown in the drawing purely schematically in an elevation in section

In der Zeichnung ist mit 1 eine Vakuumschaltröhre herkömmlicher Art bezeichnetIn the drawing, 1 denotes a vacuum interrupter of a conventional type

Die Vakuumschaltröhre 1 ist von einem druckfesten Mantel 2 aus armiertem härtbaren Gießharz umschlossen.The vacuum interrupter 1 is enclosed by a pressure-resistant jacket 2 made of reinforced hardenable cast resin.

Zwischen der Vakuumschaltröhre 1 und dem Mantel 2 befindliche Hohlräume sind mit einer Einlage 3, ebenfalls aus Gießharz, ausgefüllt.Cavities located between the vacuum interrupter 1 and the jacket 2 are filled with an insert 3, also made of cast resin.

Der Mantel 2 ist an jeder Stirnseite mit einem Flansch 4 abgeschlossen. Jeder der Flansche 4 weist einen Hals 4 a auf, der vom Mantel 2 umgriffen ist Im dargestellten Beispiel ist auf jeder Stirnseite der Vakuumschaltröhre 1 zusätzlich ein Ringelement 6 angeordnet, das einen Hohlraum zwischen dem Hals 4 a des zugeordneten Flansches 4 und der Vakuumschaltröhre 1 ausfülltThe jacket 2 is closed on each end with a flange 4. Each of the flanges 4 has a neck 4 a, which is encompassed by the jacket 2 In the example shown, an annular element 6 is additionally arranged on each end face of the vacuum interrupter 1, which fills a cavity between the neck 4 a of the associated flange 4 and the vacuum interrupter 1

Als Einlage 3 dienen vorgeformte Elemente, im dargestellten Beispiel zwei Ringe; die auf die Vakuumschaltröhre 1 mittels einem aus Gießharz bestehenden Kleber 5 aufgeklebt sind, der Ringnuten 1 a der Vakuumschaltröhre 1 ausfülltPreformed elements serve as insert 3, in the example shown two rings; which are glued to the vacuum interrupter 1 by means of an adhesive 5 made of casting resin, which fills the annular grooves 1 a of the vacuum interrupter 1

Die die Einlage 3 bildenden Elemente sind so geformt, daß sie, zusammen mit von ihnen nicht bedeckten Abschnitten der Vakuumschaltröhre 1, einen rotationssymetrischen Kemkörper ergeben, der etwa, wie dargestellt die Geometrie eines sogenannten Bombenrohres oder Einschmelzrohres aufweistThe elements forming the insert 3 are shaped such that, together with portions of the vacuum interrupter 1 which they do not cover, they result in a rotationally symmetrical core body which, as shown, has the geometry of a so-called bomb tube or melting tube

Die From eines Bomben-oder Einschmelzrohres ergibt sich, wenn dickwandiges Glasrohr beidendig zugeschmolzen wrid. Ein solches Verfahren wird häufig in der Chemie angewandtThe shape of a bomb or fusible tube results when thick-walled glass tube is melted down at both ends. Such a method is often used in chemistry

Die Form des aus der Vakuumschaltröhre 1 und der Einlage 3 gebildeten Kemkörpers kann auch wie folgt definiert werden:

  • Ein zylindrisches Mittelteil größeren Durchmessers weist stark abgerundete Schultern auf, an die sich axial je ein etwa kegelstumpfförmiges Endteil anschließt
The shape of the core body formed from the vacuum interrupter 1 and the insert 3 can also be defined as follows:
  • A cylindrical central part of larger diameter has strongly rounded shoulders, each of which adjoins an approximately frustoconical end part

Der Mantel 2 ist nicht vorgeförmt, sondern ein erst auf dem Kemkörper gebildeter Wickelkörper. Als Wickelkörper gilt hier ein Körper, der dadurch entsteht, daß mit Gießharz getränkte Fäden oder Bänder unter einem vorgegebenen Wickelwinkel auf einen Kern aufgewickelt werden und anschließend das Gießharz ausgehärtet wird. Durch die besondere Form des aus der Schaltröhre 1 und der Einlage 3 gebildeten Kernkörpers erhält der Mantel 2 bei seinem Entstehen eine Kontur, die in der Art einer Hüllkurve der Kontur des Kemkörpers folgt.The jacket 2 is not preformed, but rather a winding body formed on the core body. A winding body here is a body which arises from the fact that threads or tapes impregnated with casting resin are wound onto a core at a predetermined winding angle and the casting resin is then cured. Due to the special shape of the core body formed from the switching tube 1 and the insert 3, the jacket 2 is given a contour when it is created, which follows the contour of the core body in the manner of an envelope curve.

Maßgebend für die Erhöhung der Druckfestigkeit der beschriebenen Kapselung ist einerseits die gewählte Form des Mantels 2 und andererseits die Ausbildung des Mantels 2 als Wickelkörper.The decisive factor for increasing the compressive strength of the encapsulation described is, on the one hand, the selected shape of the casing 2 and, on the other hand, the design of the casing 2 as a winding body.

Im dargestellten Beispiel ist zwischen einem Dampfschirm 1 b der Vakuumschaltröhre 1 und dem Mantel 2 eine bevorzugt aus Kupfer bestehende Manschette 7 angeordnet Mit der Manschette 7 wird ein frühzeitiges Vergasen des Gießharzes des Mantels 2 verhindert, wenn der Dampfschirm 1 b von innen mit einem Lichtbogen beaufschlagt ist, dessen Brennspannung höher liegt als die Brennspannung eines Abschaltlichtbogens.In the example shown, a cuff 7, preferably made of copper, is arranged between a steam shield 1 b of the vacuum interrupter 1 and the jacket 2. With the cuff 7, premature gasification of the casting resin of the jacket 2 is prevented when the vapor screen 1 b impacts an arc from the inside whose operating voltage is higher than the operating voltage of a switch-off arc.

BezugszeichenlisteReference symbol list

1 = Vakuumschattröhre

  • -1 a = Ringnute
  • -1 b = Dampfschirm
  • 2 = Mantel
  • 3 = Einlage
  • 4 = Flansch
  • -4 a = Hals
  • 5 = Kleber
  • 6 = Ringelement
  • 7 = Manschetee
1 = vacuum shadow tube
  • -1 a = ring groove
  • -1 b = steam screen
  • 2 = coat
  • 3 = insert
  • 4 = flange
  • -4 a = neck
  • 5 = glue
  • 6 = ring element
  • 7 = cuff tea

Claims (5)

1. Kapselung einer Vakuumschaltröhre, mit einem die Schaltröhre (1) umschließenden druckfesten Mantel (2) aus armiertem härtbaren Kunststoff, ferner mit einer Hohlräume zwischen dem Mantel (2) und der Vakuumschaltröhre (1) ausfüllenden Einlage (3) aus Kunststoff sowie mit zwei jeweils eine Stirnseite des Mantels (2) abschliessenden Flanschen (4), dadurch gekennzeichnet, daß die Einlage (3) aus vorgeformten Elementen besteht, die in ihrer Bestimmungslage die von ihnen nicht bedeckten Abschnitte der Schaltröhre (1) zu einem rotationssymetrischen Kemkörper ergänzen, der etwa die Geometrie eines sogenannten Bombenrohres oder Einschmelzrohres aufweist, und daß der Mantel (2) ein erst auf dem Kemkörper gebildeter Wickelkörper ist, dessen Kontur in der Art einer Hüllkurve der Kontur des Kemkörpers folgt.1. Encapsulation of a vacuum interrupter, with a flameproof jacket (2) enclosing the interrupter (1) made of reinforced, hardenable plastic, furthermore with an insert (3) made of plastic and filling a cavity between the jacket (2) and the vacuum interrupter (1), and with two Flanges (4) closing one end face of the jacket (2), characterized in that the insert (3) consists of preformed elements which, in their position of determination, complement the sections of the switching tube (1) which they do not cover to form a rotationally symmetrical core body which has the geometry of a so-called bomb tube or melting tube, and that the jacket (2) is a winding body formed only on the core body, the contour of which follows the contour of the core body in the manner of an envelope. 2. Kapselung nach Anspruch 1, dadurch gekennzeichnet, daß die Flansche (4) jeweils einen Hals (4a) aufweisen, der vom Mantel (2) umgriffen ist.2. Encapsulation according to claim 1, characterized in that the flanges (4) each have a neck ( 4 a) which is encompassed by the jacket (2). 3. Kapselung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die vorgeformten Elemente der Einlage (3) aus Ringen bestehen, die auf die Schaltröhre (1) aufgeklebt sind.3. Encapsulation according to claim 1 and 2, characterized in that the preformed elements of the insert (3) consist of rings which are glued to the switching tube (1). 4. Kapselung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß auf jeder Stirnseite der Vakuumschaltröhre - (1) ein Ringelement angeordnet ist, das einen Hohlraum zwischen dem Hals (4a) des zugeordneten Flansches (4) und der Vakuumschaltröhre (1) ausfüllt 4th Encapsulation according to claims 1 to 3, characterized in that a ring element is arranged on each end face of the vacuum interrupter - (1), which fills a cavity between the neck (4a) of the associated flange (4) and the vacuum interrupter (1) 5. Kapselung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß zwischen einem Dampfschirm (1b) der Vakuumschaltröhre (1) und dem Mantel (2) eine Manschette aus Metall, vorzugsweise aus Kupfer angeordnet ist5. Encapsulation according to claim 1 to 4, characterized in that a sleeve made of metal, preferably of copper, is arranged between a steam screen (1b) of the vacuum interrupter (1) and the jacket (2)
EP86103177A 1985-03-21 1986-03-10 Vacuum switch casing Expired EP0196503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8508473U DE8508473U1 (en) 1985-03-21 1985-03-21 Encapsulation of a vacuum interrupter
DE8508473U 1985-03-21

Publications (2)

Publication Number Publication Date
EP0196503A1 true EP0196503A1 (en) 1986-10-08
EP0196503B1 EP0196503B1 (en) 1988-12-14

Family

ID=6779015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103177A Expired EP0196503B1 (en) 1985-03-21 1986-03-10 Vacuum switch casing

Country Status (3)

Country Link
EP (1) EP0196503B1 (en)
DE (2) DE8508473U1 (en)
YU (1) YU189185A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293323A1 (en) * 1987-05-27 1988-11-30 Siemens Aktiengesellschaft Encapsulated vacuum switch
EP0361530A2 (en) * 1988-09-30 1990-04-04 Gte Products Corporation Lamp assembly utilizing shield and ceramic fiber mesh for containment
WO1992006482A1 (en) * 1990-09-28 1992-04-16 Siemens Aktiengesellschaft Process for increasing the electric strength and improving the leak resistance of insulation sections and application of this process to vacuum switches
FR2679695A1 (en) * 1991-07-26 1993-01-29 Alsthom Gec VACUUM BULB WITH ELECTRICAL INSULATION.
DE19712182A1 (en) * 1997-03-22 1998-09-24 Abb Patent Gmbh Vacuum chamber

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718110A1 (en) * 1987-05-27 1988-12-08 Siemens Ag VACUUM SWITCH TUBES WITH A SHEATHING AND METHOD FOR THEIR PRODUCTION
US5808258A (en) * 1995-12-26 1998-09-15 Amerace Corporation Encapsulated high voltage vacuum switches
DE102006041149B4 (en) * 2006-09-01 2008-09-04 Abb Technology Ag Vacuum switching chamber for medium-voltage switchgear

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166658A (en) * 1962-07-05 1965-01-19 Jennings Radio Mfg Corp Vacuum switch and envelope construction therefor
US3471669A (en) * 1968-01-16 1969-10-07 Chance Co Ab Encapsulated switch assembly for underground electric distribution service
FR2215687A1 (en) * 1973-01-30 1974-08-23 Hazemeijer Bv
DE2440829A1 (en) * 1974-08-26 1976-03-11 Siemens Ag Vacuum switch has moving contact bolt with meter bellows - and hexagonal cross-section to prevent rotation inside bearing tube
US4088859A (en) * 1977-02-23 1978-05-09 Westinghouse Electric Corp. Normal open low voltage vacuum shorting switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8403264U1 (en) * 1984-02-04 1984-05-10 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Encapsulated switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166658A (en) * 1962-07-05 1965-01-19 Jennings Radio Mfg Corp Vacuum switch and envelope construction therefor
US3471669A (en) * 1968-01-16 1969-10-07 Chance Co Ab Encapsulated switch assembly for underground electric distribution service
FR2215687A1 (en) * 1973-01-30 1974-08-23 Hazemeijer Bv
DE2440829A1 (en) * 1974-08-26 1976-03-11 Siemens Ag Vacuum switch has moving contact bolt with meter bellows - and hexagonal cross-section to prevent rotation inside bearing tube
US4088859A (en) * 1977-02-23 1978-05-09 Westinghouse Electric Corp. Normal open low voltage vacuum shorting switch

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293323A1 (en) * 1987-05-27 1988-11-30 Siemens Aktiengesellschaft Encapsulated vacuum switch
EP0361530A2 (en) * 1988-09-30 1990-04-04 Gte Products Corporation Lamp assembly utilizing shield and ceramic fiber mesh for containment
EP0361530A3 (en) * 1988-09-30 1990-08-01 Gte Products Corporation Lamp assembly utilizing shield and ceramic fiber mesh for containment
WO1992006482A1 (en) * 1990-09-28 1992-04-16 Siemens Aktiengesellschaft Process for increasing the electric strength and improving the leak resistance of insulation sections and application of this process to vacuum switches
FR2679695A1 (en) * 1991-07-26 1993-01-29 Alsthom Gec VACUUM BULB WITH ELECTRICAL INSULATION.
EP0525635A1 (en) * 1991-07-26 1993-02-03 Gec Alsthom Sa Vacuumtube with electrical insulation
US5286932A (en) * 1991-07-26 1994-02-15 Gec Alsthom Sa Vacuum bulb provided with electrical insulation
DE19712182A1 (en) * 1997-03-22 1998-09-24 Abb Patent Gmbh Vacuum chamber

Also Published As

Publication number Publication date
DE3661452D1 (en) 1989-01-19
EP0196503B1 (en) 1988-12-14
DE8508473U1 (en) 1985-05-15
YU189185A (en) 1988-06-30

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