EP0424599A1 - Connexion tournante à haut courant - Google Patents

Connexion tournante à haut courant Download PDF

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Publication number
EP0424599A1
EP0424599A1 EP90106765A EP90106765A EP0424599A1 EP 0424599 A1 EP0424599 A1 EP 0424599A1 EP 90106765 A EP90106765 A EP 90106765A EP 90106765 A EP90106765 A EP 90106765A EP 0424599 A1 EP0424599 A1 EP 0424599A1
Authority
EP
European Patent Office
Prior art keywords
flanges
current connection
flange
rotatable
supply line
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.)
Granted
Application number
EP90106765A
Other languages
German (de)
English (en)
Other versions
EP0424599B1 (fr
Inventor
Wolfgang Reuter
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.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold 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 Leybold AG filed Critical Leybold AG
Publication of EP0424599A1 publication Critical patent/EP0424599A1/fr
Application granted granted Critical
Publication of EP0424599B1 publication Critical patent/EP0424599B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
    • H01R35/02—Flexible line connectors without frictional contact members
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/42—Cooling of coils

Definitions

  • the invention relates to a rotatable high-current connection for the passage of electrical leads to movable internals in closed rooms, consisting of a coaxial arrangement of an electrically conductive inner tube with outer tubes, the cavities of which are used to carry cooling media and which are connected to them with a stationary power supply line
  • the ends are each equipped with a metallic flange, from which a group of metallic strands leads to a corresponding metallic counter flange on the stationary feed line, the counter flanges of the stationary power supply line being provided with cooling devices.
  • High-current connections of the type mentioned above are required, for example, for the introduction of large operating currents into closed rooms if limited rotary and pivoting movements are to be carried out between components inside and outside the boundary walls of these rooms.
  • This need exists, for example, in systems fed with electrical current, such as melting and casting plants, in which the melting material is poured by tilting a crucible, the crucible forming a structural unit with the heating device.
  • the high-current connection should also serve to supply and discharge a coolant, by means of which furnace parts, for example an induction coil, are protected against overheating.
  • a particularly weak point of such high-current connections are the inherently flexible parts, which are designed as strands and consist of thin copper wires.
  • a high-current connection of the type described at the outset has been known for many years through obvious prior use.
  • This consists of four metallic ring flanges that arranged in pairs concentrically one inside the other and connected to one another by U-shaped strands such that an inner and an outer ring flange each have the same potential.
  • the back-to-back ring flanges of different polarity are electrically separated from one another by insulating rings, but mechanically form a structural unit, the inner ring flanges being able to perform a limited pivoting movement with respect to the outer ring flanges.
  • the ends of the strands are attached to the flanges by means of clamping screws.
  • the strand groups of one potential run approximately mirror-symmetrically to the strand groups of the other potential, the plane of symmetry lying approximately within the insulating rings between the flanges.
  • Appropriate loop length of the strands ensures that the swivel angle is sufficiently large.
  • the inner, rotatable ring flanges have different diameters and sit on the outer surfaces of the coaxial tubes, which transmit the current and the coolant through the boundary wall of the closed space to its movable internals.
  • the strands were regularly at risk from overheating. This was due to the contact resistances at the clamping points on the one hand and the ohmic resistance of the strands on the other hand, which could not be chosen to be sufficiently small in view of the required flexibility of the strands. An increase in the average diameter of the entire strand system was not possible due to spatial reasons. At the Overheating the strands did not change the fact that a cooling coil was soldered onto the outer surfaces of the outer flanges. The known solution was therefore suitable for a certain dimensioning only for a relatively low total current, so that the possible uses of the known high-current connection were subject to narrow limits.
  • the invention is based on the object of specifying a rotatable high-current connection of the type described above, which - provided the same dimensions - has essentially the same specific load capacity as the above-described high-current connection, but is also suitable for the passage required for a cooled crucible for a second cooling circuit.
  • At least four tubular components are arranged coaxially to one another form four pressure medium channels with each other, of which the two radially outer pressure medium channels are connected via two flanges, the first of which is arranged at one end of the two tubular components and the second at the other end of the two tubular components, these two flanges each have two radially extending connection bores or connecting pieces and enclose a further, overall longer tube, the ends of which are held by two further flanges.
  • the invention allows a wide variety of design options.
  • the two ends of the rotatable high-current connection are designated 1A and 1B. Between these two ends is the wall 42 which delimits the closed space in which the end 1B is located. The wall in question is only partially shown.
  • the high-current connection contains an electrically conductive inner tube 2 and an outer tube 3 of the same type, which, however, has a shorter length and is arranged concentrically with the inner tube 2.
  • inner tube 2 there is a cavity 4 for the passage of a cooling medium;
  • annular cavity 5 is formed, which is also used to carry the cooling medium.
  • the inner cavity 4 is connected via a pipe bend 6 with a screw sleeve 7b to a flexible coolant line, not shown.
  • the outer cavity 5 is also connected to a flexible cooling water line via a lateral connecting piece 7.
  • the end face of the outer tube 3 visible in FIG. 2 is fixedly connected to a metallic flange 9 with a screw sleeve 7a, which projects into and onto a flange 13 with connecting pieces 8a, 8b by means of an extension 10 this way is in direct contact with the cooling medium located in cavity 5 during operation.
  • the flange 9 is provided with three radial grooves, not shown, in which seals, not shown, for sealing against the outer tube 3, against the inner tube 2 and against the flange 13 are arranged. A rotational movement between the inner tube 2 and the outer tube 3 does not take place since the two tubes 2, 3 together with the flange 13 form a jointly movable, rigid system.
  • a flange 11 is also arranged on the inner tube 2 on the other side of the end face of the outer tube 3 in a rotationally fixed manner.
  • the inner tube 2 has, over part of its length, an insulating coating 16 which projects into the flange 14, so that the predetermined potential difference between the flange 9 and the inner tube 2 can be maintained.
  • the flanges 9 and 11 and the flange 14 are also non-rotatable relative to one another and form an inherently rigid assembly which can only carry out pivoting movements in conjunction with the pipe system.
  • each of the two counter flanges 19 and 20 is included a circumferential coolant channel 21 and 22, which in turn is sealed by a locking ring 23 and 24, respectively.
  • a spacer ring 25 made of insulating material, with which the counter flanges 19 and 20 are welded to form a rigid assembly.
  • Power supply lines 26 and 27 lead to the counter flanges 19 and 20, which are simultaneously designed as coolant lines and are equipped with connecting ends 28 and 29 for hose lines.
  • the entire arrangement is largely rotationally symmetrical with regard to the system axis A-A, with the exception of the downward connections for electricity and cooling water.
  • the live parts of different polarities are surrounded by a cover 30 to protect against contact.
  • the outer cavity 5 is closed at the left-hand end of the high-current connection by an insulating material body 31, which is provided with two pairs of radial grooves, not shown, in which sealing rings are accommodated.
  • the insulating body 31 is clamped to the outer tube 3 by means of tension screws 32. From this a radial connecting flange 33 leads to a connecting flange 35 which serves not only for the transmission of the current but also for the transmission of the cooling medium and which is provided with connecting bores 36 and 37 for this purpose.
  • connection flange 38 is screwed to the insulating material body 31, which is rotationally symmetrical, and is connected to the inner tube 2 in an electrically conductive manner via a cylindrical extension 39.
  • the connecting flange 38 also serves to carry the operating current and the cooling medium.
  • the extension 39 is provided with a radial bore 40 which is aligned with the inner cavity 4.
  • Another connecting flange 41 is attached laterally to the outer tube 3 and is connected to the cavity 5 for the cooling water flow via the radially running bore 34.
  • the flanges 41 and 43 are connected to the consumer with their bores 40, 34.
  • the consumer represents the continuation of the high-current connection, ie not only the circuit, but also the one coolant circuit is closed via the consumer.
  • the flanges 41 and 43 can be connected to the connecting flanges of a hollow induction coil in which there is a crucible.
  • This crucible generally has a so-called pouring spout, via which the contents of the crucible can be emptied into a casting mold when the crucible is tilted. The swivel movement required for this is brought about by the high-current connection described.
  • This in Figure 1 shown right end of the high current connection is protected by an insulating cover 30.
  • the two connecting bores 36, 37 are connected to it and the left-hand connecting pieces 8a, 8b corresponding to these two bores are connected to the cooling water supply or cooling water return.
  • the bearing bush 44 is screwed to the wall in a pressure-tight manner with its flange 45.
  • the bearing bush 44 in turn encloses the bearing tube 46, which is firmly and pressure-tightly connected to the flange 13 and the ring 47, which is pressed into the connecting flange 33 and is provided with recesses 48, 49 which correspond to the annular gaps 50 and 51, which are formed by the tubes 3, 55 and 46.
  • Rolling and ball bearings 52 and 53 and a seal package 54a, 54b are arranged between the bearing tube 46 and the bearing bush 44.
  • the flanges 13 and 33, 47 are each provided with three or four radially extending ribs or webs 58a, 58b, 58c or 59a, 59b, 59c, 59d, two of which are each of these webs 58a, 58b and 59a, 59c divide the annular space formed between the two tubular components 5 and 46 in cross section into crescent-shaped chambers 60a, 60b and 61a, 61b, one of which with the annular space 51 and the other with the annular space 50 is connected and also each with one of the pressure medium connections 8a, 8b or 36, 37.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Windings For Motors And Generators (AREA)
  • Insulated Conductors (AREA)
EP90106765A 1989-10-25 1990-04-09 Connexion tournante à haut courant Expired - Lifetime EP0424599B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3935440A DE3935440A1 (de) 1989-10-25 1989-10-25 Drehbare hochstromverbindung
DE3935440 1989-10-25

Publications (2)

Publication Number Publication Date
EP0424599A1 true EP0424599A1 (fr) 1991-05-02
EP0424599B1 EP0424599B1 (fr) 1994-09-14

Family

ID=6392121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106765A Expired - Lifetime EP0424599B1 (fr) 1989-10-25 1990-04-09 Connexion tournante à haut courant

Country Status (4)

Country Link
US (1) US5044970A (fr)
EP (1) EP0424599B1 (fr)
JP (1) JPH03152888A (fr)
DE (2) DE3935440A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672117A1 (fr) * 1991-01-30 1992-07-31 Consarc Corp Dispositif de fusion a induction sous vide, comportant des branchements de refroidissement et d'alimentation de puissance manóoeuvrables simultanement.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122574A1 (de) * 1991-07-08 1993-01-14 Leybold Ag Drehbare hochstromverbindung
DE19607217B4 (de) * 1996-02-26 2005-07-14 Ald Vacuum Technologies Ag Drehbare Stromverbindung
JP3192396B2 (ja) * 1997-11-07 2001-07-23 日本ピラー工業株式会社 流体用ロータリジョイント
DE19819903C2 (de) * 1998-05-05 2000-09-14 Didier Werke Ag Fluidgekühlte, elektrische Stromleitung
US6574094B1 (en) * 2002-04-11 2003-06-03 General Dynamics Land Systems Inc. Method and apparatus for cooling bus bars
FR2897482B1 (fr) * 2006-02-10 2010-10-29 Cogema Dispositif de transport de l'electricite a courant fort et frequence elevee
US7494362B2 (en) * 2007-04-26 2009-02-24 J.S.T. Corporation High current sealed connector plug assembly
JP7080796B2 (ja) * 2018-10-31 2022-06-06 株式会社東芝 電流導入端子構造及び電磁石装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318690A1 (de) * 1973-04-13 1974-10-31 Leybold Heraeus Gmbh & Co Kg Drehbare hochstromverbindung
GB2120866A (en) * 1982-05-26 1983-12-07 Leybold Heraeus Gmbh & Co Kg Cooled heavy-current connection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1439972A1 (de) * 1955-11-08 1969-02-20 Westinghouse Elek C Corp Halbleiterbauelementeaufbau
US3133145A (en) * 1962-10-26 1964-05-12 Gen Electric Flexible insulated joint for electrical conductors with means for fluidcooling
US3652797A (en) * 1970-08-13 1972-03-28 Daniel J Goodman Safety anchored multiconductor cable for electric arc furnaces
GB1482967A (en) * 1973-10-24 1977-08-17 Siemens Ag Superconductive electric cable and cooling apparatus therefor
FR2326062A1 (fr) * 1975-09-25 1977-04-22 Cefilac Enrouleur-derouleur de cable electrique a potentiometre
US4246626A (en) * 1979-03-06 1981-01-20 Alsthom-Atlantique Mechanical protection of electrical connectors of electronic power assemblies cooled by a fluorinated hydrocarbon
GB2140984B (en) * 1983-05-19 1988-05-11 Mc Graw Edison Co Slip-ring current collector assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318690A1 (de) * 1973-04-13 1974-10-31 Leybold Heraeus Gmbh & Co Kg Drehbare hochstromverbindung
GB2120866A (en) * 1982-05-26 1983-12-07 Leybold Heraeus Gmbh & Co Kg Cooled heavy-current connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672117A1 (fr) * 1991-01-30 1992-07-31 Consarc Corp Dispositif de fusion a induction sous vide, comportant des branchements de refroidissement et d'alimentation de puissance manóoeuvrables simultanement.

Also Published As

Publication number Publication date
JPH03152888A (ja) 1991-06-28
DE3935440A1 (de) 1991-05-02
DE59007127D1 (de) 1994-10-20
EP0424599B1 (fr) 1994-09-14
US5044970A (en) 1991-09-03

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