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EP0477423B1 - Système de liaison pour cadres - Google Patents

Système de liaison pour cadres Download PDF

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Publication number
EP0477423B1
EP0477423B1 EP90118717A EP90118717A EP0477423B1 EP 0477423 B1 EP0477423 B1 EP 0477423B1 EP 90118717 A EP90118717 A EP 90118717A EP 90118717 A EP90118717 A EP 90118717A EP 0477423 B1 EP0477423 B1 EP 0477423B1
Authority
EP
European Patent Office
Prior art keywords
joining system
frame
tie
rod
frame part
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
EP90118717A
Other languages
German (de)
English (en)
Other versions
EP0477423A1 (fr
Inventor
Friedrich Dipl.-Ing. Alber
Rudolf Dedelmahr
Winfried Dipl.-Ing. Jungnitz
Rudolf Link
Hans Dipl.-Ing. Schott
Siegfried Dipl.-Ing. Weiss
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE59009903T priority Critical patent/DE59009903D1/de
Priority to AT90118717T priority patent/ATE130698T1/de
Priority to EP90118717A priority patent/EP0477423B1/fr
Priority to TW080107632A priority patent/TW207024B/zh
Publication of EP0477423A1 publication Critical patent/EP0477423A1/fr
Priority to US08/231,863 priority patent/US5430425A/en
Application granted granted Critical
Publication of EP0477423B1 publication Critical patent/EP0477423B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together

Definitions

  • the invention relates to a composite frame system for a press frame of a transformer core.
  • Transformers in particular power transformers, generally comprise a transformer core layered from core sheets, on the legs of which the coils of the individual phases are arranged.
  • the coils can be cast in resin.
  • the transformer core is held together by a so-called press frame.
  • the press frame consists essentially of frame parts, in particular metal rails, which are screwed together on both sides of the yokes.
  • the frame parts of two transformer yokes are connected to each other by so-called tie rods. These are used to clamp the transformer along its legs and to fix the coils on the legs.
  • Such a transformer is shown in detail, for example, in Trafo-Union publication A 19100-T1306-A13, page 3, picture 2.
  • the tie rods each consist of a metal band which has a pin guided in the frame part at at least one end.
  • a screw head of an eyebolt which is fastened to the frame part with a clamping nut, engages on this pin.
  • the tension nut is used to adjust the tensile force on the tie rod.
  • separate tie rods are provided on both sides. In this way, the frame parts of the press frame can be clamped together with the core and the coils.
  • the composite system between tie rod and frame rail is complex because many individual parts are required. Its manufacture is labor and cost intensive.
  • a press frame in which the tie rod rests directly on one leg of the core and overlaps the frame parts in the area of the yoke.
  • an unfavorable force is given, and when the tie rod is tensioned, it can stand out from the leg.
  • the invention has for its object to significantly simplify the known frame composite system.
  • the known design is mechanically unfavorable.
  • the entire press frame lies evenly on the transformer core, as a result of which a uniform pressing is achieved. Filling material for the cavities and the additional work steps are eliminated.
  • a preferred embodiment of the press frame is given according to a combination of claims 2 to 4, 7, 8 and 9.
  • the construction and manufacture of the press frame part and tie rod are considerably simplified, with their stability, in particular their connection stability, increasing.
  • the number of individual parts is also significantly reduced, so that the storage for the composite frame system is reduced.
  • the tie rod now consists of only one piece of punched metal. The already critical spigot is eliminated.
  • the coil is braced on the frame part with at least one wedge. This is done by inserting the wedge with a predetermined press-in pressure or press-in path. In this way, all can be clamped easily and quickly with the same force when arranging several coils. Differences in the size of the coils or tolerances when building the coils need not be taken into account.
  • the transformer 1 shows a longitudinal section through a transformer 1.
  • the transformer 1 comprises a layered transformer core 3, a coil 5 with coil support 7, which is arranged on one leg 9 of the transformer core 3, and a press frame 11.
  • the press frame 11 initially comprises a press frame part 13 , which bears against the yoke 15 of the transformer core 3.
  • the press frame part 13 can be formed as shown by a U-profile. However, other profile shapes or flat strips can also be used.
  • the press frame part 13 is part of a composite frame system 16a and has a recess 17 on its side facing the coil 5, in which a tie rod 19 resting on the leg 9 is arranged.
  • the tie rod 19 is non-positively connected to the press frame part 13. Further details follow in the description of FIGS. 3 to 6.
  • the composite frame system 16a essentially consists of only two elements, which leads to a reduction in storage. The elements are also particularly easy to manufacture because they can be manufactured from standard profiles in just a few steps.
  • a wedge 23 is arranged between the coil 5 and the press frame part 13 and serves as a clamping device.
  • the wedge 23 is preferably pressed in with a predetermined force. This can also be achieved in that the wedge is pressed in a predetermined distance. In this way, the same clamping force can always be maintained even with different dimensions of the coil 5 and the press frame part 13.
  • the wedge 5 can be provided with a self-locking or slip-resistant surface or wedge slope.
  • An additional fuse, e.g. a paint protection or pinning can be provided.
  • several wedges 23 are used per press frame part 13.
  • the wedge 23 is preferably arranged in a recess 23a of the coil support 7. In this way, the wedge 23 is guided laterally. In addition, it lies flat on the press frame part 13, whereby the bracing is improved.
  • the coil support 7 can also be formed by a coil former.
  • FIG. 2 shows a further exemplary embodiment of a frame composite system 16b.
  • the tie rod 19 has a bend 24 with an adjusting screw 25 which presses against the press frame part 13.
  • a tensioning screw 27 which is guided in the press frame part 13 and acts between the coil 5 and the press frame part 13, is provided as the tensioning device for the coil 5.
  • An additional fuse can also be attached here, as already described above.
  • FIG. 3 shows a frame composite system 16c according to FIG. 1 in a side view.
  • the tie rod 19 is arranged with an engagement part 29 in the recess 17 of the press frame part 13.
  • the engagement part 29 has a rear grip 31 which engages on a shoulder 33 of the recess 17.
  • the area of engagement of the rear grip 31 on the shoulder 33 should be at least as large as the smallest cross-sectional area of the tie rod 19. In this way, reliable power transmission without damage to the engagement part 29 is provided.
  • the recess 17 has a plurality of shoulders 33a, 33b lying one behind the other, so that the engagement part 29 can be arranged in a plurality of positions.
  • the composite frame system 16d can be set, for example, to different transformer sizes or different tensile forces.
  • FIG. 5 shows a further variant of the composite frame system 16e.
  • the recess 17, in which the engagement part 29 engages appropriately, is provided in a spacer element 35a, which in turn is arranged in an opening 37 of the press frame part 13.
  • spacer elements 35a of different sizes the tensile force of the composite frame system 16e can be set here.
  • FIG. 6 shows a composite frame system 16f in a combination of the embodiments from FIGS. 4 and 5, in which the spacer element 35b is additionally arranged in the opening 37 in an adjustable manner.
  • the Spacer element 35b has for this purpose behind-grip handles 31a, 31b which engage on shoulders 33a, 33b.
  • the spacer element 35a, 35b from FIG. 5 and FIG. 6 can also serve to compensate for tolerances in the transformer core 3 or in the frame composite system 16e to 16g.
  • FIG. 7 shows an embodiment of the composite frame system 16g in a longitudinal section, in which the press frame part 13 has a holding cover 39 for the tie rod 19 on a surface 38 facing away from the transformer core 3 in the region of the recess 17.
  • the tie rod 19 is already secured against tilting, slipping or twisting during assembly in the recess 17.
  • This configuration can be produced in terms of production engineering in that the material to be brought out of the press frame part 13 for the recess 17 is pressed or punched through, so that the material forms the holding cover 39.
  • the tie rod 19 can be designed differently in the different versions.
  • the shape of the engagement part can be predetermined as desired. It can, as shown in FIGS. 3 and 4, be attached, or, as shown in FIGS. 5 and 6, be formed from a wide flat strip.
  • combinations of the exemplary embodiments described can also be provided by the person skilled in the art. This applies in particular to the combination of the composite frame system with various tensioning devices for the coil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (13)

  1. Système (16a à 16g) de liaison de cadre comportant au moins un élément de cadre de serrage (13) et un tirant (19), qui peut être relié mécaniquement à l'élément de cadre de serrage, d'un cadre de serrage (11) d'un noyau de transformateur (3), et dans lequel respectivement une surface (21a,21b) du tirant (19) et de l'élément de cadre de serrage (13), qui sont tournés vers le noyau (3) du transformateur, sont disposés dans un plan commun, caractérisé par des moyens de liaison mécaniques, qui comprennent une combinaison formée d'un évidement (17) et d'un élément d'engrènement (29) adapté à cet évidement, et sont disposés entre l'élément (13) du cadre de serrage et le tirant (19), les surfaces (21a,21b) des moyens de liaison, qui sont tournées vers le noyau de transformateur (3), étant également situées dans le plan commun.
  2. Système de liaison de cadre suivant la revendication 1, dans lequel les surfaces (21a,21b), tournées vers le noyau (20) du transformateur, sont montées selon une application à plat sur le noyau (3) du transformateur.
  3. Système de liaison de cadre suivant la revendication 1 ou 2, dans lequel l'évidement (17) est disposé sur l'élément (13) du cadre de serrage et la partie d'engrènement est disposée sur le tirant (19).
  4. Système de liaison de cadre suivant la revendication 3, dans lequel la partie d'engrènement (29) est agencée sous la forme d'un élément d'engagement arrière (31, 31a, 31b), qui s' engage dans l'évidement (17) de l'élément (13) du cadre de serrage.
  5. Système de liaison de cadre suivant la revendication 4, dans lequel l'évidement (17) est formé par une entretoise (35a, 35b), qui est disposée dans une ouverture (37) de l'élément (13) du cadre de serrage.
  6. Système de liaison de cadre suivant la revendication 5, dans lequel l'entretoise (35a, 35b) est disposée dans l'ouverture (37) de manière à être déplaçable dans la direction de traction du tirant (19).
  7. Système de liaison de cadre suivant l'une des revendications 4 à 6, dans lequel la surface d'attaque de la partie d'engagement arrière (31,31a,31b) contre l'évidement (17) correspond au moins à la surface en coupe transversale la plus petite du tirant (19).
  8. Système de liaison de cadre suivant l'une des revendications 4 à 7, dans lequel l'élément (17) du cadre de serrage possède un capot de retenue (39) pour le tirant (19), dans la zone de l'évidement (17), sur une surface (38) tournée à l'opposé du noyau (3) du transformateur.
  9. Système de liaison de cadre suivant l'une des revendications 1 à 8, dans lequel le tirant (19) est réalisé en une pièce métallique plate et la partie d'engagement arrière (31,31a,31b) est située dans un plan du tirant (19).
  10. Système de liaison de cadre suivant l'une des revendications 1 à 9, dans lequel l'élément (13) du cadre de serrage comprend un dispositif de tension pour serrer une bobine (5) pouvant être disposée sur une branche (9) du noyau (3) du transformateur.
  11. Système de liaison de cadre suivant la revendication 10, dans lequel le dispositif de serrage comprend au moins une vis de serrage (27) guidée dans l'élément (13) du cadre de serrage.
  12. Système de liaison de cadre suivant la revendication 10 ou 11, dans lequel le dispositif de serrage comprend au moins un coin (23) pouvant être disposé entre l'élément (13) du cadre de serrage et la bobine (5).
  13. Système de liaison de cadre suivant la revendication 12, dans lequel le coin (23) peut être enfoncé avec une force pouvant être prédéterminée, entre l'élément (13) du cadre de serrage et la bobine (5).
EP90118717A 1990-09-28 1990-09-28 Système de liaison pour cadres Expired - Lifetime EP0477423B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59009903T DE59009903D1 (de) 1990-09-28 1990-09-28 Rahmenverbundsystem.
AT90118717T ATE130698T1 (de) 1990-09-28 1990-09-28 Rahmenverbundsystem.
EP90118717A EP0477423B1 (fr) 1990-09-28 1990-09-28 Système de liaison pour cadres
TW080107632A TW207024B (fr) 1990-09-28 1991-09-26
US08/231,863 US5430425A (en) 1990-09-28 1994-04-22 Integrated frame system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90118717A EP0477423B1 (fr) 1990-09-28 1990-09-28 Système de liaison pour cadres

Publications (2)

Publication Number Publication Date
EP0477423A1 EP0477423A1 (fr) 1992-04-01
EP0477423B1 true EP0477423B1 (fr) 1995-11-22

Family

ID=8204545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118717A Expired - Lifetime EP0477423B1 (fr) 1990-09-28 1990-09-28 Système de liaison pour cadres

Country Status (5)

Country Link
US (1) US5430425A (fr)
EP (1) EP0477423B1 (fr)
AT (1) ATE130698T1 (fr)
DE (1) DE59009903D1 (fr)
TW (1) TW207024B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6434182B1 (en) 2001-05-23 2002-08-13 Lecrotherm, Inc. Composite insulating clamp assembly for induction furnace
US20060226944A1 (en) * 2005-03-30 2006-10-12 Waukesha Electric Systems, Inc. Adjustable locking wedge system apparatus and method
DE102008055882A1 (de) * 2008-11-03 2010-05-06 Siemens Aktiengesellschaft Haltevorrichtung für eine Gießharztransformatoren-Wicklung
EP2909846A1 (fr) * 2012-10-22 2015-08-26 ABB Technology AG Transformateur ayant une armature centrale d'inter-verrouillage
KR20160072167A (ko) * 2014-04-16 2016-06-22 가부시키가이샤 히다치 산키시스템 변압기
IT202100002594A1 (it) * 2021-02-05 2022-08-05 H&F S R L Pressa-giogo perfezionato per un dispositivo di trasformazione elettrica e dispositivo di trasformazione elettrica ottenuto con esso

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1385054A (fr) * 1964-02-25 1965-01-08 Licentia Gmbh Dispositif pour presser les noyaux de fer de transformateurs et de bobines de choc
DE1488219B2 (de) * 1964-09-28 1970-06-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur Herstellung einer kraftschlüssigen Verbindung zwischen Presselementen von Transformatoren, Drosselspulen u. dgl
US3671903A (en) * 1971-02-08 1972-06-20 Gte Sylvania Inc Non-inflammable horizontal output transformer
JPS5928973B2 (ja) * 1978-03-10 1984-07-17 株式会社東芝 鉄心締付け装置
GB2035706B (en) * 1978-11-09 1983-05-05 Tdk Electronics Co Ltd Inductance element
US4260975A (en) * 1979-05-29 1981-04-07 General Electric Company Transformer with terminal board support and clamping-mounting structure
JPS58713A (ja) * 1982-04-23 1983-01-05 Canon Inc 機械的変位量検出装置
DE3235655A1 (de) * 1982-09-27 1984-03-29 L.C.C.-C.I.C.E. Compagnie Européenne de Composants Electroniques, 93170 Bagnolet Elektrische spule
GB2129622A (en) * 1982-10-28 1984-05-16 Telcon Magnetic Components Lim Magnetic cores
DE3325905A1 (de) * 1983-07-19 1985-01-31 Robert Bosch Gmbh, 7000 Stuttgart Haltevorrichtung fuer ein induktives bauelement
US4723349A (en) * 1986-08-15 1988-02-09 Westinghouse Electric Corp. Method of making fixture for the window of a magnetic core
CA1303252C (fr) * 1987-08-13 1992-06-09 John A. Agostinelli Element de circuit a couche d'arret pour proteger une couche d'oxyde conductrice cristalline
DE8716135U1 (de) * 1987-12-05 1988-02-11 Ceag Licht- Und Stromversorgungstechnik Gmbh, 4770 Soest Transformator, Drossel und dgl.
US4839622A (en) * 1988-09-30 1989-06-13 Cooper Power Systems, Inc. Transformer core clamping structure
US4890086A (en) * 1989-05-04 1989-12-26 Westinghouse Electric Corp. Transformer assembly

Also Published As

Publication number Publication date
US5430425A (en) 1995-07-04
ATE130698T1 (de) 1995-12-15
EP0477423A1 (fr) 1992-04-01
TW207024B (fr) 1993-06-01
DE59009903D1 (de) 1996-01-04

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