DE3429209A1 - Screening electrode for tap changes of tapped transformers - Google Patents

Screening electrode for tap changes of tapped transformers

Info

Publication number
DE3429209A1
DE3429209A1 DE19843429209 DE3429209A DE3429209A1 DE 3429209 A1 DE3429209 A1 DE 3429209A1 DE 19843429209 DE19843429209 DE 19843429209 DE 3429209 A DE3429209 A DE 3429209A DE 3429209 A1 DE3429209 A1 DE 3429209A1
Authority
DE
Germany
Prior art keywords
screening electrode
pipe
foam
plastic foam
wrapped
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
DE19843429209
Other languages
German (de)
Other versions
DE3429209C2 (en
Inventor
Alexander Bleibtreu
Dieter Dr Ing Dohnal
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
MASCHINENFABRIK REINHAUSEN Gebr SCHEUBECK GMBH & CO KG
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 MASCHINENFABRIK REINHAUSEN Gebr SCHEUBECK GMBH & CO KG, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical MASCHINENFABRIK REINHAUSEN Gebr SCHEUBECK GMBH & CO KG
Priority to DE19843429209 priority Critical patent/DE3429209A1/en
Priority to FR8508948A priority patent/FR2574216B1/en
Priority to SE8503550A priority patent/SE458647B/en
Priority to AT2268/85A priority patent/AT392369B/en
Priority to JP60172547A priority patent/JPS6148911A/en
Publication of DE3429209A1 publication Critical patent/DE3429209A1/en
Application granted granted Critical
Publication of DE3429209C2 publication Critical patent/DE3429209C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

A screening electrode, which is arranged under oil, for tap changes of tapped transformers, which screening electrode is designed as a closed ring which is wrapped with paper. The ring consists essentially of a grooved corrugated tube which is wound from strips consisting of aluminium foil which is longitudinally folded several times. The corrugated tube is filled with foam using a cured multi-component plastic foam (hard plastic foam).

Description

Maschinenfabrik Reinhausen 292Ma/GlMaschinenfabrik Reinhausen 292Ma / Gl

Gebrüder Scheubeck GmbH & Co KGGebrüder Scheubeck GmbH & Co KG

Abschirmelektrode für Stufenschalter von StufentransformatorenShielding electrode for tap changers of tap transformers

Die Erfindung bezieht sich auf eine Äbschirmelektrode gemäß Oberbegriff des Patentanspruches.The invention relates to a shielding electrode according to the preamble of the claim.

Derartige Abschirmelektroden werden üblicherweise als Schirmringe aus Stahlrohr gefertigt. Es werden z.B. zwei gedruckte Halbschalen miteinander zu einem Schirmring verschweißt. Hierbei muß, um eine glatte Oberfläche zu erreichen, die Schweißnaht anschließend verputzt werden. Auch ist es erforderlich, daß die Schweißnaht öldicht ist, damit im Schirmring kein Luft-Öl-Austausch erfolgen kann.Such shielding electrodes are usually manufactured as shielding rings made of steel pipe. For example, there will be two printed half-shells welded together to form an umbrella ring. This must be done in order to have a smooth surface reach, the weld seam is then plastered. It is also necessary that the weld seam is oil-tight, so that no air-oil exchange can take place in the shield ring.

Zum an sich teueren Herstellungsverfahren kommt also eine Dichtigkeitsprüfung hinzu. Noch aufwendiger wird das Herstellverfahren, wenn der Schirmring von der kreisrunden Form abweicht und beispielsweise ovale Form oder die Außenkontur einer Acht haben soll, wie dies bei potentialsteuernden Schirmringen in Stufenschaltern der Fall sein kann. Ein derartiger Schirmring müßte aus einzelnen Bogenstücken und aus geraden Rohrstücken zusammengesetzt werden. Ein weiterer Nachteil der aus Stahl oder Stahlrohr gefertigten Schirmringe ist ihr großes Gewicht.In addition to the production process, which is expensive in itself, there is also a Leak test added. The manufacturing process becomes even more complex, if the umbrella ring deviates from the circular shape and, for example, oval shape or the Outer contour should have a figure of eight, as is the case with potential-controlling shield rings in tap changers can. Such an umbrella ring would have to be assembled from individual curved pieces and straight pipe pieces. Another disadvantage of the shield rings made of steel or tubular steel is their great weight.

Aufgabe der Erfindung ist es, eine Abschirmelektrode der eingangs genannten Art anzugeben, die bei geringem Gewicht leicht herstellbar ist, insbesondere auch bei von der Kreisform abweichenden Ringformen· Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruches angegebenen Mittel gelöst.The object of the invention is to provide a shielding electrode of the type mentioned at the outset which is lightweight is easy to manufacture, especially in the case of ring shapes that deviate from the circular shape. This object is achieved according to the invention solved by the means specified in the characterizing part of the patent claim.

Die mit der Erfindung erzielten Vorteile sind insbesondereThe advantages achieved by the invention are particular

folgende: Die Abschirmelektrode läßt sich leicht herstellen. Es können hierfür die z.B. aus der Lüftungs- und Klimatechnik bekannten Wellrohre verwendet werden. Die Abschirmelektrode besitzt eine ausreichende Formstabilität bei sehr geringem Gewicht. Es kann kein Luft-Öl-Austausch erfolgen. Auch die Herstellung bei Formen, die von der Kreisform abweichen, ist äußerst einfach: Es wird das flexible Metallrohr auf Länge geschnitten und mit Hilfe einer Schablone der gewünschten Kontur angepaßt. Die beiden Enden werden mittels eines rohrförmigen gebogenen sich aufweitenden Federblechs, das in die beiden Rohrenden eingesteckt wird, zusammengefügt. Die Stoßstelle wird mit Aluminium-Folienband umwickelt. An im Feldschatten liegenden Stellen werden Trag- und Anschlußelemente eingesetzt.the following: The shielding electrode is easy to manufacture. For this purpose, e.g. from the ventilation and Air conditioning known corrugated pipes are used. The shielding electrode has sufficient dimensional stability with very low weight. There is no air-oil exchange take place. The production of shapes that deviate from the circular shape is also extremely simple: it will flexible metal pipe cut to length and adapted to the desired contour using a template. The two Ends are bent by means of a tubular, widening spring plate that is inserted into the two pipe ends is inserted, put together. The joint is with Wrapped in aluminum foil tape. Supporting and connecting elements are used in places in the shadow of the field.

Das Rohr wird anschließend durch geeignete Öffnungen mit einem Mehrkomponenten-Kunststoffschaum ausgeschäumt und nach dem Aushärten in der Schablone noch getempert, wodurch eine gute Formstabilität erreicht wird. Schließlich wird die Abschirmelektrode noch auf übliche Weise mit Papier umwickelt. Auch ist es möglich, das Rohr vor dem Zusammenstecken der Enden mit Vergußmasse aufzufüllen, die nach dem Zusammenstecken aufschäumt.The pipe is then provided with suitable openings a multi-component plastic foam and after hardening in the stencil, tempered, whereby good dimensional stability is achieved. In the end the shielding electrode is wrapped with paper in the usual way. It is also possible to cut the pipe before Put together the ends to be filled with potting compound, which foams up after being put together.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigenAn embodiment of the invention is shown in the drawing shown. Show it

Figur 1 eine Draufsicht undFigure 1 is a plan view and

Figur 2 vergrößert einen Querschnitt.Figure 2 shows an enlarged cross section.

Gemäß Figur 1 wurde die Abschirmelektrode mit Hilfe einer Schablone in die gewünschte nicht kreisrunde Form gebracht. Die beiden Rohrenden sind an der Stoßstelle 1 zusammengefügt und werden durch ein im Innern angeordnetes rohrförmiges Federstahlblech 2, das an der Innenwand der Rohrenden anliegt, zusammengehalten'. Das an sich recht labile WeIlrohr ist zur Erzielung einer ausreichenden Stabilität mitAccording to Figure 1, the shielding electrode with the help of a Stencil brought into the desired non-circular shape. The two pipe ends are joined at joint 1 and are through a tubular spring steel sheet 2 arranged in the interior and attached to the inner wall of the tube ends is 'held together'. The actually quite unstable white tube is to achieve sufficient stability with

Hartschaum 3 (Figur 2) ausgeschäumt. In der Hartschaurnfüllung sind die Halte- und AnschluGelemente 4, die natürlich so angeordnet sind, daß sie im Feldschatten zu liegen kommen, verankert.Rigid foam 3 (Figure 2) foamed. In the Hartschaurn filling are the holding and connection elements 4, which are of course arranged so that they are in the field shadow come to rest, anchored.

Claims (1)

34292033429203 PatentanspruchClaim Unter Öl angeordnete Abschirmelektrode für Stufenschalter von Stufentransformatoren, die als geschlossener Ring ausgeführt ist, wobei der Ring im wesentlichen aus einem leitfähigen mit Papier umwickelten Rohr runden Quer-Schnitts besteht,Shielding electrode for tap changers arranged under oil of step transformers that form a closed ring is performed, wherein the ring consists essentially of a conductive tube wrapped with paper is made of round cross-section, dadurch gekennzeichnet,characterized, daG das Rohr ein verrilltes Wellrohr ist, das aus Bändern aus mehrfach längsgefalteter Aluminiumfolie gewickelt ist und daß das Rohr mit einem ausgehärteten Mehrkomponenten-Kunststoffschaum (Kunststoff-Hartschaum) ausgeschäumt ist.that the pipe is a grooved corrugated pipe made of ribbons is wrapped from multiple longitudinally folded aluminum foil and that the pipe is covered with a cured multi-component plastic foam (Rigid plastic foam) is filled with foam.
DE19843429209 1984-08-08 1984-08-08 Screening electrode for tap changes of tapped transformers Granted DE3429209A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19843429209 DE3429209A1 (en) 1984-08-08 1984-08-08 Screening electrode for tap changes of tapped transformers
FR8508948A FR2574216B1 (en) 1984-08-08 1985-06-13 PROTECTION ELECTRODE FOR SOCKET SWITCHES OF SOCKET TRANSFORMERS
SE8503550A SE458647B (en) 1984-08-08 1985-07-22 SCREEN ELECTRODE FOR WINDOW SELECTOR FOR OUTLET TRANSFORMERS
AT2268/85A AT392369B (en) 1984-08-08 1985-08-01 SHIELDING ELECTRODE FOR TAPE SWITCHES OF STEPPING TRANSFORMERS
JP60172547A JPS6148911A (en) 1984-08-08 1985-08-07 Shielding electrode of on-load tap changer for on-load tap changing transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843429209 DE3429209A1 (en) 1984-08-08 1984-08-08 Screening electrode for tap changes of tapped transformers

Publications (2)

Publication Number Publication Date
DE3429209A1 true DE3429209A1 (en) 1986-02-20
DE3429209C2 DE3429209C2 (en) 1992-06-25

Family

ID=6242616

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843429209 Granted DE3429209A1 (en) 1984-08-08 1984-08-08 Screening electrode for tap changes of tapped transformers

Country Status (5)

Country Link
JP (1) JPS6148911A (en)
AT (1) AT392369B (en)
DE (1) DE3429209A1 (en)
FR (1) FR2574216B1 (en)
SE (1) SE458647B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017144241A1 (en) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Arrangement for electrostatically shielding an electric system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903583U (en) * 1963-09-19 1964-11-05 Reinhausen Maschf Scheubeck TUBULAR HIGH TENSION SHIELD RING.
DE1191903B (en) * 1963-12-10 1965-04-29 Transform Roentgen Matern Veb Shield ring for controlling the edge fields on windings of high-voltage transformers or the like.
CH420374A (en) * 1963-09-19 1966-09-15 Reinhausen Maschf Scheubeck Tubular high voltage shield ring

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602035A (en) * 1949-09-08 1952-07-01 Gen Electric Paper pulp coating of coils
DE1002874B (en) * 1953-07-08 1957-02-21 Licentia Gmbh Spring ring for high-voltage electrical devices
CH343475A (en) * 1954-07-06 1959-12-31 Raupach Friedrich Dr H C Process for the production of capacitively controlled electrical insulating bodies
US3041561A (en) * 1958-07-29 1962-06-26 Raytheon Co Transformers
GB1105551A (en) * 1964-03-11 1968-03-06 English Electric Co Ltd Electrostatic shield
DE2037484C3 (en) * 1970-07-29 1979-06-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Plate-shaped shield body of a high-voltage free-jet switch
DE2442405C3 (en) * 1974-09-03 1981-04-09 Siemens AG, 1000 Berlin und 8000 München Control electrode for devices and systems in high voltage technology
JPS5457906U (en) * 1977-09-29 1979-04-21
JPS5949094B2 (en) * 1978-08-17 1984-11-30 石川島播磨重工業株式会社 Straightening tool for static pressure leveler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903583U (en) * 1963-09-19 1964-11-05 Reinhausen Maschf Scheubeck TUBULAR HIGH TENSION SHIELD RING.
CH420374A (en) * 1963-09-19 1966-09-15 Reinhausen Maschf Scheubeck Tubular high voltage shield ring
DE1191903B (en) * 1963-12-10 1965-04-29 Transform Roentgen Matern Veb Shield ring for controlling the edge fields on windings of high-voltage transformers or the like.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BOLL, R.: Flexible magnetische Abschirmschläuche. In: Elektronik 1974, Bd. 23, H. 4, S. 130 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017144241A1 (en) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Arrangement for electrostatically shielding an electric system

Also Published As

Publication number Publication date
DE3429209C2 (en) 1992-06-25
SE458647B (en) 1989-04-17
FR2574216A1 (en) 1986-06-06
AT392369B (en) 1991-03-25
JPS6148911A (en) 1986-03-10
SE8503550L (en) 1986-02-09
FR2574216B1 (en) 1988-02-12
SE8503550D0 (en) 1985-07-22
ATA226885A (en) 1990-08-15
JPH0587004B2 (en) 1993-12-15

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: MASCHINENFABRIK REINHAUSEN GMBH, 8400 REGENSBURG,

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee