DE3429209C2 - - Google Patents
Info
- Publication number
- DE3429209C2 DE3429209C2 DE3429209A DE3429209A DE3429209C2 DE 3429209 C2 DE3429209 C2 DE 3429209C2 DE 3429209 A DE3429209 A DE 3429209A DE 3429209 A DE3429209 A DE 3429209A DE 3429209 C2 DE3429209 C2 DE 3429209C2
- Authority
- DE
- Germany
- Prior art keywords
- tube
- aluminum foil
- wound
- strips
- plastic foam
- 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.)
- Expired - Fee Related
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)
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
Die Erfindung betrifft eine Abschirmelektrode gemäß dem Oberbegriff des Patentanspruchs. Eine solche Abschirmelektrode ist aus der CH-PS 4 20 374 bekannt. Nachteilig bei diesen Abschirmelektroden ist, daß das Wickeln des Rohres aus Bändern aus Aluminiumfolie aufwendig ist, da regelmäßig ein Kern erforderlich ist, auf den die einzelnen Lagen des Bandes bzw. der Bänder aufgebracht werden. Besonders schwierig ist die Herstellung von Abschirmelektroden, die keine Ringform besitzen, sondern beispielsweise eine ovale Kontur oder die einer Acht haben, wie dies bei potentialsteuernden Schirmringen in Stufenschaltern der Fall sein kann. Weiterhin nachteilig ist die besonders bei komplizierten Formen unbefriedigende Stabilität und allgemein mangelhafte Öldichtigkeit solcher Abschirmelektroden.The invention relates to a shielding electrode according to the preamble of Claim. Such a shielding electrode is from the CH-PS 4 20 374 known. A disadvantage of these shielding electrodes is that the tube is wound out Aluminum foil tapes are expensive because a core is regularly required is applied to the individual layers of the tape or tapes will. The production of Shield electrodes that do not have a ring shape, but for example one have an oval contour or an figure eight, as is the case with potential-controlling ones Shield rings in tap changers can be the case. Another disadvantage is that of complicated shapes unsatisfactory stability and generally poor oil tightness Shielding electrodes.
Aufgabe der Erfindung ist es, eine Abschirmelektrode der eingangs genannten Art anzugeben, die bei geringem Gewicht leicht herstellbar ist, beliebige Konturen ermöglicht und dabei eine hohe Stabilität aufweist und unter allen Umständen öldicht ist. Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs gelöst.The object of the invention is a shielding electrode of the aforementioned Specify type that is easy to manufacture with low weight, any Contours enabled and has a high stability and among all Is oil-tight. This object is achieved by the features of the claim solved.
Zwar ist aus der DE-AS 11 91 903 bereits ein gerillter, schlauchartiger metallischer Schirmring für Hochspannungstransformatoren bekannt; nähere Angaben zu dessen Aufbau sind jedoch nicht gemacht. Weiterhin ist es aus dem Aufsatz von R. Boll "Flexible magnetische Abschirmschläuche" (Elektronik 1974, Heft 4, Seite 130) bereits bekannt, Wellrohre aus einem mehrfach gefalteten Band zu wickeln. Die in diesem Aufsatz beschriebene Abschirmung gehört jedoch zu einer völlig anderen Kategorie, insbesondere ist sie für die Anordnung in Isolieröl von Stufenschaltern ungeeignet, da ein Luft-Öl-Austausch im Schirmring nicht auftreten darf.DE-AS 11 91 903 is already a grooved, hose-like metallic shield ring known for high voltage transformers; closer However, no details are given of its structure. Furthermore, it is from the essay by R. Boll "Flexible magnetic Shielding hoses "(Electronics 1974, No. 4, page 130) already known, To wind corrugated pipes from a multi-folded band. The ones in this essay described shielding, however, belongs to a completely different category, in particular, it is for the arrangement in isolating oil of tap changers unsuitable as an air-oil exchange in the shield ring must not occur.
Die mit der Erfindung erzielten Vorteile sind insbesondere 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 liegen den Stellen werden Trag- und Anschlußelemente eingesetzt. 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 advantages achieved with the invention are particular following: The shield electrode is easy to manufacture. The z. B. from the ventilation and Air conditioning technology known corrugated pipes are used. The Shielding electrode has sufficient dimensional stability with very low weight. There can be no air-oil exchange respectively. The manufacture of molds made by the Deviating a circular shape is extremely simple: it will flexible metal tube cut to length and using adapted to the desired contour of a template. The two Ends are made by means of a tubular, bent, self expanding spring plate that in the two pipe ends is inserted, put together. The joint is with Wrapped in aluminum foil tape. On lying in the field shadow support and connection elements are used at the points. The pipe is then passed through suitable openings a multi-component plastic foam and after hardening in the template still annealed, whereby good dimensional stability is achieved. In the end the shielding electrode is still in the usual way Wrapped in paper. It is also possible to put the pipe in front of the Put the ends together with potting compound, which foams up after being plugged together.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigtAn embodiment of the invention is in the drawing shown. It shows
Fig. 1 eine Draufsicht und Fig. 1 is a plan view and
Fig. 2 vergrößert einen Querschnitt. Fig. 2 enlarges a cross section.
Gemäß Fig. 1 wurde die Abschirmelektrode mit Hilfe einer Schablone in die gewünschte nicht kreisrunde Form gebracht. Die beiden Rohrenden sind an der Stoßstelle I zusammenge fügt und werden durch ein im Inneren angeordnetes rohrförmig gebogenes Federstahlblech 2, das an der Innenwand der Rohrenden anliegt, zusammengehalten. Das an sich recht labile Well rohr ist zur Erzielung einer ausreichenden Stabilität mit Hartschaums 3 (Fig. 2) ausgeschäumt. In der Hartschaum füllung sind die Halte- und Anschlußelemente 4, die derart angeordnet sind, daß sie im Feldschatten zu liegen kommen, verankert.Referring to FIG. 1, the shield with the aid of a template has been brought into the desired non-circular shape. The two pipe ends are joined together at the joint I and are held together by an internally arranged tubular spring steel sheet 2 which bears against the inner wall of the pipe ends. The corrugated tube, which is quite labile per se, is foamed with hard foam 3 ( FIG. 2) in order to achieve sufficient stability. In the rigid foam filling, the holding and connecting elements 4 , which are arranged such that they come to rest in the field shadow, are anchored.
Claims (1)
dadurch gekennzeichnet,
daß das Rohr als Wellrohr aus den Bändern aus der Aluminiumfolie gewickelt ist, wobei die Aluminiumfolie mehrfach längsgefaltet ist, und daß das Rohr mit einem ausgehärteten Mehrkomponenten- Kunststoffschaum (Kunststoff-Hartschaum) (3) ausgeschäumt ist.Oil shielding electrode for tap changers of tap transformers, which is designed as a closed ring, the ring consists essentially of a conductive, paper-wrapped tube round cross-section, which is wound from strips of aluminum foil,
characterized by
that the tube is wound as a corrugated tube from the strips of aluminum foil, the aluminum foil being longitudinally folded several times, and that the tube is foamed with a hardened multi-component plastic foam (rigid plastic foam) ( 3 ).
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 DE3429209A1 (en) | 1986-02-20 |
DE3429209C2 true 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) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016203106A1 (en) * | 2016-02-26 | 2017-08-31 | Siemens Aktiengesellschaft | Arrangement for the electrostatic shielding of an electrical system |
Family Cites Families (12)
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 |
DE1903583U (en) * | 1963-09-19 | 1964-11-05 | Reinhausen Maschf Scheubeck | TUBULAR HIGH TENSION SHIELD RING. |
AT242249B (en) * | 1963-09-19 | 1965-09-10 | 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. |
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 |
-
1984
- 1984-08-08 DE DE19843429209 patent/DE3429209A1/en active Granted
-
1985
- 1985-06-13 FR FR8508948A patent/FR2574216B1/en not_active Expired
- 1985-07-22 SE SE8503550A patent/SE458647B/en not_active IP Right Cessation
- 1985-08-01 AT AT2268/85A patent/AT392369B/en not_active IP Right Cessation
- 1985-08-07 JP JP60172547A patent/JPS6148911A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
SE458647B (en) | 1989-04-17 |
JPS6148911A (en) | 1986-03-10 |
SE8503550L (en) | 1986-02-09 |
DE3429209A1 (en) | 1986-02-20 |
SE8503550D0 (en) | 1985-07-22 |
JPH0587004B2 (en) | 1993-12-15 |
ATA226885A (en) | 1990-08-15 |
FR2574216B1 (en) | 1988-02-12 |
AT392369B (en) | 1991-03-25 |
FR2574216A1 (en) | 1986-06-06 |
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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 |