DE2108344A1 - Arrangement for shielding the boiler wall from transformers and reactors - Google Patents
Arrangement for shielding the boiler wall from transformers and reactorsInfo
- Publication number
- DE2108344A1 DE2108344A1 DE19712108344 DE2108344A DE2108344A1 DE 2108344 A1 DE2108344 A1 DE 2108344A1 DE 19712108344 DE19712108344 DE 19712108344 DE 2108344 A DE2108344 A DE 2108344A DE 2108344 A1 DE2108344 A1 DE 2108344A1
- Authority
- DE
- Germany
- Prior art keywords
- shielding
- arrangement
- sheet metal
- metal layers
- transformers
- 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.)
- Pending
Links
Classifications
-
- 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
- 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
- H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
Description
Anordnung zur Abschirmung der Kesselwand von Transformatoren und Drosselspulen Zusatz zu Patentanmeldung P 20 54 453.0 Die Erfindung betrifft eine Anordnung zur Abschirmung der Kesselwand von Transformatoren und Drosselspulen gegen Wicklungsstreuflüsse, die gemäß der Hauptanmeldung P 20 54 453 sowohl aus elektrisch als auch aus magnetisch leitendem Material besteht. Dabei ist die magnetisch leitende Abschirmung aus geschichteten Kernblechen zusammengesetzt, während die elektrisch leitende Abschirmung aus Kupfer oder Aluminium besteht.Arrangement for shielding the boiler wall from transformers and reactors Addition to patent application P 20 54 453.0 The invention relates to an arrangement for Shielding of the boiler wall of transformers and reactors against winding leakage flux, according to the main application P 20 54 453 from both electrical and magnetic conductive material. The magnetically conductive shield is layered Laminated core, while the electrically conductive shield is made of copper or aluminum.
Beim Aufbau einer solchen Abschirmung ergeben sich insofern Schwierigkeiten, als es nicht ganz einfach ist, die Kernbleche über eine größere Fläche mit dem notwendigen Druck gegeneinanderzupressen, damit sie überall satt aufeinanderliegen. Damit soll vor allem verhindert werden, daß lockerliegende Bleche durch betriebsfrequente Schwingungen des Transformators angeregt werden, wodurch unerwünschte Geräusche entstehen können. Zwar lassen sich die Blechpakete der Abschirmungen mittels Schrauben bzw. Bolzen miteinander vorbinden, jedoch erfordern beide Verbindungsarten einen erheblichen Aufwand. So müssen die Bleche mit einer Vielzahl von Löchern versehen und die Schrauben bzw. Nieten isoliert werden, um einen Kurzschluß zwischen den einzelnen Blechen zu vermeiden. Auch ist es nicht möglich, die Form der magnetisch leitenden Abschirmung in etwa dem Verlauf der magnetischen Kraftlinien anzupassen und so den Eintritt der Kraftlinien in die Magnetbleche, die ja aus kornorientiertem Material bestehen, zu erleichtern.When building such a shield, difficulties arise insofar as as it is not very easy, the core laminations cover a larger area with the necessary Pressing pressure against each other so that they lie on top of each other everywhere. So that should Above all, it prevents loose metal sheets from vibrations at the operating frequency of the transformer are excited, which can produce undesirable noises. It is true that the laminated cores of the shields can be fixed by means of screws or bolts tie with each other, however, both types of connection require one considerable effort. The metal sheets have to be provided with a large number of holes and the screws or rivets are insulated to short-circuit between the avoid individual sheets. Also it is not possible to change the shape of the magnetically conductive shielding to roughly match the course of the magnetic lines of force and so the entry of the lines of force into the magnetic sheets, which are made of grain-oriented Material exist to facilitate.
Diese Aufgaben lassen sich gemäß der Erfindung dadurch lösen, daß die einzelnen Blechlagen miteinander verklebt sind.These objects can be achieved according to the invention in that the individual sheet metal layers are glued together.
Durch das Kleben wird eine großflächige Verbindung zwischen den einzelnen Blechen erreicht, so daß sich insgesamt gesehen ein kompaktes Blechpaket ergibt. Überdies können die Endbereiche der Bleche so verformt werden, daß sie etwa parallel zu den auftreffenden magnetischen Kraftlinien verlaufen, so daß deren Eindringen in die Blechlagen erleichtert und die Abschirmwirkung der gesamten Anordnung verbessert wird. Die Verformung der Blechpakete läßt sich beispielsweise dadurch erreichen, daß man die Bleche während des Klebens in einer entsprechenden Form aufeinanderpress t.Gluing creates a large-area connection between the individual Reached sheets, so that overall, a compact sheet package results. In addition, the end regions of the metal sheets can be deformed so that they are approximately parallel run to the incident magnetic lines of force, so that their penetration facilitated in the sheet metal layers and the shielding effect of the entire arrangement improved will. The deformation of the laminated cores can be achieved, for example, by that the sheets are pressed together in a corresponding shape during the gluing process t.
Ausführungsbeispiele der Erfindung zeigen die Figuren 1 und 2.Exemplary embodiments of the invention are shown in FIGS. 1 and 2.
Figur 1 zeigt eine Abschirmung, die aus einem magnetisch leitenden Teil 2 sowie einem elektrisch leitenden Teil 4 besteht, wobei der magnetisch leitende Teil 2 unmittelbar auf der Kesselwand 1 aufgebracht ist. Der von der Wicklung 3 ausgehende Streufluß wird durch die elektrisch leitende Abschirmung 4 zunächst nach außen abgedrängt, wo er sich durch die magnetische Abschirmung 2 schließt. Der obere und untere Endbereich der Abschirmung 2 ist entsprechend dem Verlauf der Kraftlinien verformt, so daß deren Eindringen in die Abschirmung erleichtert wird.Figure 1 shows a shield consisting of a magnetically conductive Part 2 and an electrically conductive part 4 consists, the magnetically conductive Part 2 is applied directly to the boiler wall 1. The one from winding 3 outgoing leakage flux is initially through the electrically conductive shield 4 pushed away from the outside, where it closes by the magnetic shield 2. The upper and the lower end region of the shield 2 corresponds to the course of the lines of force deformed so that their penetration into the shield is facilitated.
In Figur 2 ist eine Abschirmung gezeigt, die abwechselnd aus magnetisch leitenden Schichten 2 und elektrisch leitenden Schichten 4 aufgebaut ist. Auch hier wird das Eindringen der Kraftlinien in die magnetisch leitenden Schichten 2, durch deren Form günstig beeinflußt.In Figure 2, a shield is shown, which alternately from magnetic conductive layers 2 and electrically conductive layers 4 is built up. Here too the penetration of the lines of force into the magnetically conductive layers 2, by influences their shape favorably.
Zum Verkleben der einzelnen Blechschichten untereinander eignen sich besonders Klebefolien, deren Trägermaterial aus einem flächenförmigen, papierähnlichen, aus Fasern hergestellten Isolierstoff besteht, der mit einem vorpolymerisierten Kunstharz imprägniert oder beschichtet ist, das unter Einfluß von Druck und Temperatur aushärtet.They are suitable for gluing the individual sheet metal layers together especially adhesive films, whose carrier material consists of a sheet-like, paper-like, made of fibers insulating material, which is prepolymerized with a Synthetic resin is impregnated or coated under the influence of pressure and temperature hardens.
Selbstverständlich können auch andere Klebstoffe Anwendung finden, sofern sie die entsprechenden mechanischen und elektrischen Eigenschaften aufweisen und insbesondere eine genügende Ölfestigkeit besitzen.Of course, other adhesives can also be used, provided they have the appropriate mechanical and electrical properties and in particular have sufficient oil resistance.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712108344 DE2108344A1 (en) | 1971-02-22 | 1971-02-22 | Arrangement for shielding the boiler wall from transformers and reactors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712108344 DE2108344A1 (en) | 1971-02-22 | 1971-02-22 | Arrangement for shielding the boiler wall from transformers and reactors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2108344A1 true DE2108344A1 (en) | 1972-09-07 |
Family
ID=5799459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712108344 Pending DE2108344A1 (en) | 1971-02-22 | 1971-02-22 | Arrangement for shielding the boiler wall from transformers and reactors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2108344A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073401A1 (en) * | 1981-08-27 | 1983-03-09 | Transformatoren Union Aktiengesellschaft | Tank for nominal service output transformers |
EP0092204A2 (en) * | 1982-04-16 | 1983-10-26 | SIRTEN Srl Società Italiana Reattanze Trasformatori Elettronica Nuclei | Inductance coil |
DE3627888A1 (en) * | 1986-08-16 | 1988-02-18 | Philips Patentverwaltung | Transformer having a magnetic screen |
DE4238197A1 (en) * | 1992-11-12 | 1994-05-19 | Abb Patent Gmbh | Multi-system vehicle |
WO2010094671A1 (en) * | 2009-02-18 | 2010-08-26 | Abb Research Ltd | Magnetic shunt, magnetic shunt arrangement and power device |
-
1971
- 1971-02-22 DE DE19712108344 patent/DE2108344A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0073401A1 (en) * | 1981-08-27 | 1983-03-09 | Transformatoren Union Aktiengesellschaft | Tank for nominal service output transformers |
EP0092204A2 (en) * | 1982-04-16 | 1983-10-26 | SIRTEN Srl Società Italiana Reattanze Trasformatori Elettronica Nuclei | Inductance coil |
EP0092204A3 (en) * | 1982-04-16 | 1984-02-15 | Sirten Srl Societa Italiana Reattanze Trasformatori Elettronica Nuclei | Inductance coil |
DE3627888A1 (en) * | 1986-08-16 | 1988-02-18 | Philips Patentverwaltung | Transformer having a magnetic screen |
DE4238197A1 (en) * | 1992-11-12 | 1994-05-19 | Abb Patent Gmbh | Multi-system vehicle |
WO2010094671A1 (en) * | 2009-02-18 | 2010-08-26 | Abb Research Ltd | Magnetic shunt, magnetic shunt arrangement and power device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHA | Expiration of time for request for examination |