DE20100164U1 - Fastening technology for transformers - Google Patents

Fastening technology for transformers

Info

Publication number
DE20100164U1
DE20100164U1 DE20100164U DE20100164U DE20100164U1 DE 20100164 U1 DE20100164 U1 DE 20100164U1 DE 20100164 U DE20100164 U DE 20100164U DE 20100164 U DE20100164 U DE 20100164U DE 20100164 U1 DE20100164 U1 DE 20100164U1
Authority
DE
Germany
Prior art keywords
core
transformers
fastening
elements
bolts
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 - Lifetime
Application number
DE20100164U
Other languages
German (de)
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.)
TRANSFORMATOREN und ELEKTROTEC
Original Assignee
TRANSFORMATOREN und ELEKTROTEC
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 TRANSFORMATOREN und ELEKTROTEC filed Critical TRANSFORMATOREN und ELEKTROTEC
Priority to DE20100164U priority Critical patent/DE20100164U1/en
Publication of DE20100164U1 publication Critical patent/DE20100164U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263Fastening parts of the core together

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Description

Erfindung in der Befestigungstechnik bei Transformatoren, wobei die Befestigung mittels Befestigungselementen erfolgt und dadurch gekennzeichnet ist, dass die Armatur mit sich in der Kernbohrung durch radiale Spreizung festklemmender Elemente befestigt ist.Invention in fastening technology for transformers, whereby the fastening is carried out by means of fastening elements and is characterized in that the fitting is fastened with elements which clamp themselves in the core bore by radial expansion.

Kembleche für Kleintransformatoren der Typen M und El sind grundsätzlich mit sogenannten Kernlöchern ausgerüstet, die im fertig zusammengesetzten Kern zu in den Eckbereichen liegenden Kembohrungen führen. Diese Kernbohrungen werden für die Befestigung der Armaturen für eine Vielzahl von Funktionen benutzt. Beispielsweise sind dies Fußwinkel, Klemmenträger, Erdungsanschlüsse, Leiterplatten, Beschaltungselemente. Dabei nehmen die Kernbohrungen durchgehende Bolzen auf, an deren Enden einseitig oder beidseitig die Armaturen verschraubt sind.Core plates for small transformers of types M and El are always equipped with so-called core holes, which lead to core bores in the corner areas of the fully assembled core. These core bores are used to attach the fittings for a variety of functions. These include, for example, foot brackets, terminal supports, earthing connections, circuit boards, and wiring elements. The core bores accommodate through-bolts, to the ends of which the fittings are screwed on on one or both sides.

Die Funktion der Kernbolzen als Kernpressung ist seit der Einführung der Verschweißung von Kernschenkel und Joch nicht mehr erforderlich.The function of the core bolts as core pressing is no longer necessary since the introduction of welding of the core leg and yoke.

Grundsätzlicher Nachteil der Kernbolzen ist, dass sie sich im magnetisch aktiven Teil des Transformators befinden. Die Bolzen bilden über die Schweißnaht und die beiden äußeren Kernbleche eine Kurzschlußschleife, die den von ihr umschlossenen Teil des Kernquerschnitts abtrennt und für den magnetischen Fluss unwirksam macht. Die Wirkung ist die einer magnetischen Querschnittsverringerung, die zu unerwünschten oder gefährlichen zusätzlichen Verlusten im Eisenkern führt. Die zusätzlichen Verluste können im ungünstigen Fall, der bei größeren Kernen eintreten kann, zum Glühen und Ausbrennen der Bolzen und Kernblechen führen, was die Zerstörung des Transformators bedeutet. Sicherheitshalber werden daher die Bolzen mit isolierten Scheiben oder Winkelringen und durchgehende Isolierröhrchen vom Kern isoliert.The basic disadvantage of the core bolts is that they are located in the magnetically active part of the transformer. The bolts form a short-circuit loop via the weld seam and the two outer core sheets, which cuts off the part of the core cross-section enclosed by it and makes it ineffective for the magnetic flux. The effect is that of a magnetic cross-section reduction, which leads to undesirable or dangerous additional losses in the iron core. In the worst case scenario, which can occur with larger cores, the additional losses can lead to the bolts and core sheets glowing and burning out, which means the destruction of the transformer. To be on the safe side, the bolts are therefore insulated from the core with insulated disks or angle rings and continuous insulating tubes.

In der Fertigung ist der Einbau der Kernbolzen selbst schon ein aufwendiges Verfahren, dass praktisch nur in Handarbeit ausgeführt werden kann. Der Arbeitsgang besteht aus dem beidseitigen Aufstecken der Beilagscheiben, Isolierscheiben, Zahnscheiben, dem Aufschieben des Isolierrohres und der Armaturen selbst und dem Anziehen der Muttern mit Gegenhalten. Diese Arbeitsgänge, die am Transformator bis zu viermal durchgeführt werden müssen, stehen einem rationellen Zusammenbau entgegen.In production, the installation of the core bolts is already a complex process that can practically only be carried out by hand. The work step consists of putting on the washers, insulating washers, toothed washers on both sides, sliding on the insulating tube and the fittings themselves and tightening the nuts with counter-holding. These work steps, which have to be carried out on the transformer up to four times, are inconvenient for efficient assembly.

Erfindungsgemäß wird die Aufgabe gelöst , indem für die Armaturenbefestigung Spreizelemente verwendet werden, die sich durch radiale Spreizung in der Kembohrung festklemmen.According to the invention, the object is achieved by using expansion elements for the fitting fastening, which clamp themselves in the core bore by radial expansion.

Solche Spreizelemente können beispielsweise metallische Spreizdübel oder Blindniete sein.Such expansion elements can be, for example, metallic expansion dowels or blind rivets.

Diese Elemente ragen nur teilweise in die Kernbohrungen hinein, die Bildung einer Kurzschlußschleife ist daher ausgeschlossen. Isolierteile entfallen.These elements only partially extend into the core holes, so the formation of a short-circuit loop is excluded. Insulating parts are not required.

Bei Verwendung eines z.B. Blindnietes besteht ein Befestigungselement nur noch aus einem einzigen Teil, dass in einem schnellen Arbeitsgang mit pneumatisch betätigtem Spannwerkzeug montiert werden kann.When using a blind rivet, for example, a fastening element consists of only a single part that can be assembled in one quick operation using a pneumatically operated clamping tool.

Bezugszeichen - Liste Reference symbols - list

1 = Fußwinkel1 = foot angle

2 = Spulenkörper2 = Coil body

3 = Transformatorenklemmen3 = Transformer terminals

4 = Trafoblechpaket4 = Transformer laminated core

5 = Trafoklemmenträger5 = Transformer terminal carrier

6 = Blindniete6 = Blind rivet

Claims (1)

Befestigungstechnik bei Transformatoren, wobei die Befestigung mittels Befestigungselementen erfolgt, dadurch gekennzeichnet, dass die Armatur mit sich in der Kernbohrung durch radiale Spreizung festklemmender Elemente befestigt wird. Fastening technology for transformers, wherein the fastening is carried out by means of fastening elements, characterized in that the fitting is fastened with elements which clamp themselves in the core bore by radial expansion.
DE20100164U 2001-01-05 2001-01-05 Fastening technology for transformers Expired - Lifetime DE20100164U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20100164U DE20100164U1 (en) 2001-01-05 2001-01-05 Fastening technology for transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20100164U DE20100164U1 (en) 2001-01-05 2001-01-05 Fastening technology for transformers

Publications (1)

Publication Number Publication Date
DE20100164U1 true DE20100164U1 (en) 2001-03-29

Family

ID=7951258

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20100164U Expired - Lifetime DE20100164U1 (en) 2001-01-05 2001-01-05 Fastening technology for transformers

Country Status (1)

Country Link
DE (1) DE20100164U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019219726A1 (en) * 2019-12-16 2021-06-17 Robert Bosch Gmbh Inductive assembly, and method of making the inductive assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2441864A1 (en) 1973-09-14 1975-04-03 Philips Nv INDUCTIVE ELEMENT WITH A CORE CONSTRUCTED FROM LAMELLA
DE2455046A1 (en) 1974-11-20 1976-05-26 Siemens Ag Contact elements for transducer mounted alongside coil - are fitted on frame slide over iron core bolted at ends having sockets for contact brackets
DE3246666A1 (en) 1982-01-25 1983-08-04 Elektro-Apparatebau Olten AG, 4600 Olten, Solothurn Transformer
DE3224063A1 (en) 1982-06-28 1984-01-12 Siemens AG, 1000 Berlin und 8000 München Small transformer
DE3418667C2 (en) 1984-05-19 1991-12-05 Adels-Contact Elektrotechnische Fabrik Gmbh & Co Kg, 5060 Bergisch Gladbach, De
DE19826588C1 (en) 1998-06-15 1999-11-11 Siemens Ag Electronic control device for motor vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2441864A1 (en) 1973-09-14 1975-04-03 Philips Nv INDUCTIVE ELEMENT WITH A CORE CONSTRUCTED FROM LAMELLA
DE2455046A1 (en) 1974-11-20 1976-05-26 Siemens Ag Contact elements for transducer mounted alongside coil - are fitted on frame slide over iron core bolted at ends having sockets for contact brackets
DE3246666A1 (en) 1982-01-25 1983-08-04 Elektro-Apparatebau Olten AG, 4600 Olten, Solothurn Transformer
DE3224063A1 (en) 1982-06-28 1984-01-12 Siemens AG, 1000 Berlin und 8000 München Small transformer
DE3418667C2 (en) 1984-05-19 1991-12-05 Adels-Contact Elektrotechnische Fabrik Gmbh & Co Kg, 5060 Bergisch Gladbach, De
DE19826588C1 (en) 1998-06-15 1999-11-11 Siemens Ag Electronic control device for motor vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019219726A1 (en) * 2019-12-16 2021-06-17 Robert Bosch Gmbh Inductive assembly, and method of making the inductive assembly

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Legal Events

Date Code Title Description
R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 20010503

R163 Identified publications notified

Effective date: 20010723

R156 Lapse of ip right after 3 years

Effective date: 20040803