EP0109587A1 - Transformateur avec partie active refroidie à huile et résonateurs réduisant le bruit - Google Patents

Transformateur avec partie active refroidie à huile et résonateurs réduisant le bruit Download PDF

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Publication number
EP0109587A1
EP0109587A1 EP83110831A EP83110831A EP0109587A1 EP 0109587 A1 EP0109587 A1 EP 0109587A1 EP 83110831 A EP83110831 A EP 83110831A EP 83110831 A EP83110831 A EP 83110831A EP 0109587 A1 EP0109587 A1 EP 0109587A1
Authority
EP
European Patent Office
Prior art keywords
bulges
transformer according
resonators
boiler
oil
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.)
Withdrawn
Application number
EP83110831A
Other languages
German (de)
English (en)
Inventor
Erich Dr. Reiplinger
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 Union AG
Original Assignee
Transformatoren Union AG
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 Union AG filed Critical Transformatoren Union AG
Publication of EP0109587A1 publication Critical patent/EP0109587A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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
    • H01F27/33—Arrangements for noise damping

Definitions

  • the invention relates to a transformer with an oil-cooled active part made of an iron core and windings installed in a boiler and with sound-absorbing resonators between the active part and the boiler wall.
  • German patent application P 31 33 981.6 it is proposed to reduce this noise radiation to arrange resonators between the active part and the boiler walls within the oil space.
  • These resonators are constructed as vibration systems in which serving as a vibrating mass for relieving the boiler wall magnetically effective shield walls are provided, which are supported by large compressible intermediate layers on the boiler side walls and which are coordinated so that the natural frequency of the vibration systems is less than 0.7 times the mains frequency.
  • the disadvantage here is the additional effort for the large-area compressible intermediate layer, for which only a few and very expensive materials are suitable in view of the aging resistance with considerable thermal and chemical stress.
  • the invention is based on the object for transformers with large nominal powers, the induction of which cannot be reduced, for example with regard to permissible transport dimensions, to provide a boiler design which noticeably dampens the transmission of vibrations generated by the iron core to the boiler magnetostrictively and by the windings magnetodynamically and thereby a more free installation and "handling of large transformers.
  • the construction of the resonators from sheet metal is very advantageous because they withstand the thermal and chemical loads occurring in the transformer without any problems in the long run and because even if the chambers formed by the bulges fail, the operational safety of the transformer as such is not impaired, but only the noise radiation rises to the existing volume level for the noise radiation without the measure according to the invention.
  • the depth of the bulges is equal to 5 to 10 times the sheet thickness, the individual bulges being approximately circular and having a diameter of approximately 40 mm, and that the natural frequency of each sheet cutout forming a bulge is equal to twice the network frequency or an integer multiple thereof.
  • the bulges are arranged in rows and the gussets between them are connected to the opposite sheet in the same way as the edges.
  • the sheets are expediently connected to one another by soldering or gluing, the solder or the adhesive being inserted in the form of a film which wets the adjacent sheet metal surfaces when heated and firmly connects them to one another after cooling.
  • a particularly useful development of the invention is that the resonators are each soldered together from a weaker, bulged and a stronger, flat aluminum sheet and at the same time as a shield wall keep the magnetic field in the oil chamber away from the boiler wall.
  • An undervoltage winding 2 and an high-voltage winding 3 with winding end faces 4 are arranged around a mostly multi-leg core 1, which is usually constructed from laminated metal sheets.
  • the core 1, the undervoltage winding 2 and the high-voltage winding 3 together form the active part of the transformer and are set up in a manner not shown in a boiler with a bottom 5, boiler side walls 6 and a cover 7.
  • the boiler is completely filled with a cooling and insulating liquid 8, usually transformer oil.
  • resonators are arranged opposite the high-voltage windings 3, consisting of a sheet 9 facing the boiler side wall 6 and a sheet 10 facing the active part of the transformer.
  • the resonators made of the sheets 9 and 10 rest only on their fastening points on the boiler wall parts and, moreover, hang freely in the space filled with the cooling and insulating liquid 8 in front of the boiler side wall 6.
  • the sheet 9 opposite the boiler side wall 6 is thicker than the sheet 10 facing the active part of the transformer, in which lenticular bulges 11 are also provided.
  • the sheets 9 and 10 are connected to one another in a vacuum-tight manner at least at their edges, for example by soldering or gluing.
  • the actual soldering or gluing process takes place in a device at a pressure lower than atmospheric, preferably at a pressure that is as close as possible to the vacuum.
  • the indentation of the bulges 11 essentially only stands in the way of the strength of the sheet 10 that can be derived from the shape and the material.
  • the deformation work on the sheet 10 caused, for example, by vibrations in the cooling and insulating liquid 8 is influenced little or not at all by gas or air cushions enclosed between the sheets 9 and 10, and essentially also not as a locally occurring vibration by the sheet 10 transferred to the sheet 9.
  • their natural frequency can be predetermined and is selected so that it is equal to twice the network frequency or an integer multiple thereof.
  • the sheets 9 and 10 In order to shield the boiler side walls 6 from the magnetic field emanating from the active part of the transformer, it is expedient to produce the sheets 9 and 10 from a material which is both highly thermally and electrically conductive, for example aluminum or copper or steel. This makes it possible to dispense with a special magnetic shield connected upstream of the resonators.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transformer Cooling (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Housings And Mounting Of Transformers (AREA)
EP83110831A 1982-11-12 1983-10-28 Transformateur avec partie active refroidie à huile et résonateurs réduisant le bruit Withdrawn EP0109587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3241932 1982-11-12
DE19823241932 DE3241932A1 (de) 1982-11-12 1982-11-12 Transformator mit oelgekuehltem aktivteil und schalldaempfenden resonatoren

Publications (1)

Publication Number Publication Date
EP0109587A1 true EP0109587A1 (fr) 1984-05-30

Family

ID=6178013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110831A Withdrawn EP0109587A1 (fr) 1982-11-12 1983-10-28 Transformateur avec partie active refroidie à huile et résonateurs réduisant le bruit

Country Status (4)

Country Link
EP (1) EP0109587A1 (fr)
JP (1) JPS59100506A (fr)
BR (1) BR8306224A (fr)
DE (1) DE3241932A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130579A3 (fr) * 2011-03-28 2013-04-25 BSH Bosch und Siemens Hausgeräte GmbH Composant de circuit de fluide frigorigène et appareil frigorifique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1094618A (en) * 1964-03-13 1967-12-13 Smit & Willem & Co Nv Tank accommodating electrical apparatus and device for absorbing sound emitted thereby
GB1100904A (en) * 1964-09-17 1968-01-24 Parsons C A & Co Ltd Improvements in and relating to electro-magnetic induction apparatus
DE1260611B (de) * 1961-09-28 1968-02-08 Licentia Gmbh Fluessigkeitsisolierte Transformatoren oder Drosselspulen mit schalldaemmender Kesselabdeckung
DE2834823B1 (de) * 1978-08-09 1979-10-25 Messerschmitt Boelkow Blohm Volumenaendernde Resonatoren nach dem Tellerfeder-Prinzip
CH618037A5 (en) * 1977-07-04 1980-06-30 Bschorr Oskar Arrangement for sound absorption with resonators of changeable volume
DE2947026B1 (de) * 1979-11-22 1980-11-27 Messerschmitt Boelkow Blohm Silatoren zur Laermreduzierung
DE3047341A1 (de) * 1979-12-18 1981-09-17 Hitachi, Ltd., Tokyo Statische induktionsvorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1260611B (de) * 1961-09-28 1968-02-08 Licentia Gmbh Fluessigkeitsisolierte Transformatoren oder Drosselspulen mit schalldaemmender Kesselabdeckung
GB1094618A (en) * 1964-03-13 1967-12-13 Smit & Willem & Co Nv Tank accommodating electrical apparatus and device for absorbing sound emitted thereby
GB1100904A (en) * 1964-09-17 1968-01-24 Parsons C A & Co Ltd Improvements in and relating to electro-magnetic induction apparatus
CH618037A5 (en) * 1977-07-04 1980-06-30 Bschorr Oskar Arrangement for sound absorption with resonators of changeable volume
DE2834823B1 (de) * 1978-08-09 1979-10-25 Messerschmitt Boelkow Blohm Volumenaendernde Resonatoren nach dem Tellerfeder-Prinzip
DE2947026B1 (de) * 1979-11-22 1980-11-27 Messerschmitt Boelkow Blohm Silatoren zur Laermreduzierung
DE3047341A1 (de) * 1979-12-18 1981-09-17 Hitachi, Ltd., Tokyo Statische induktionsvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012130579A3 (fr) * 2011-03-28 2013-04-25 BSH Bosch und Siemens Hausgeräte GmbH Composant de circuit de fluide frigorigène et appareil frigorifique

Also Published As

Publication number Publication date
BR8306224A (pt) 1984-06-19
JPS59100506A (ja) 1984-06-09
DE3241932A1 (de) 1984-05-17

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19840705

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19850826

RIN1 Information on inventor provided before grant (corrected)

Inventor name: REIPLINGER, ERICH, DR.