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EP1683170B2 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

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Publication number
EP1683170B2
EP1683170B2 EP04802681A EP04802681A EP1683170B2 EP 1683170 B2 EP1683170 B2 EP 1683170B2 EP 04802681 A EP04802681 A EP 04802681A EP 04802681 A EP04802681 A EP 04802681A EP 1683170 B2 EP1683170 B2 EP 1683170B2
Authority
EP
European Patent Office
Prior art keywords
ring
switching device
hollow
arc
basic body
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
EP04802681A
Other languages
German (de)
English (en)
Other versions
EP1683170A1 (fr
EP1683170B1 (fr
Inventor
Joachim Gericke
Volker Lehmann
Andrzej Nowakowski
Klaus Schuler
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34559661&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1683170(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1683170A1 publication Critical patent/EP1683170A1/fr
Application granted granted Critical
Publication of EP1683170B1 publication Critical patent/EP1683170B1/fr
Publication of EP1683170B2 publication Critical patent/EP1683170B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/046—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by plating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means

Definitions

  • the invention relates to a switching device with the features according to the preamble of claim 1.
  • a switching device is from the document US 5,567,923 known.
  • Another switching device is for example from the European patent application EP 0 982 748 A1 known.
  • the arcing contact pieces are coated there by plasma spraying with an arc-resistant material, so that an arc burning between the arcing contact pieces causes little or no visible burn-up.
  • the rated current contact pieces also have, at their sliding surfaces, a sectionally applied burn-resistant protective layer applied by means of plasma spraying. Above the burn-resistant protective layer, the fixed rated current contact piece is silver plated.
  • the respective joints When abutting several materials such as burn-resistant material, electrically conductive silver and another metal such as the aluminum of the rated current contact piece, the respective joints always have irregularities.
  • the joint is mechanically resilient only to a reduced extent. Surface friction occurring when the sliding surfaces of the rated current contact pieces travel on each other can lead to phenomena of disintegration and thus to a weakening of the individual layers. So it is possible that starting from the joint place flaking off of individual layers takes place. As a result, the switching capacity of the switching device is reduced.
  • the invention has the object of providing a switching device of the type mentioned in such a way that with high current carrying capacity, the contact points withstand high mechanical and thermal stress.
  • the galvanic coating can for example consist of a good electrically conductive material, such as silver or gold. As a result, the contact resistance of the electrical contact is reduced. At the same time an oxidation of the arc-resistant material is prevented by the galvanic coating with a longer storage of the individual modules.
  • a galvanic finishing joints or boundary layers of different materials can be covered, whereby the mechanical strength and mechanical resistance of these bodies is improved.
  • the arc-resistant material in the form of a ring, covering the end faces of the hollow cylindrical body, is attached to the hollow cylindrical body.
  • the electric field in the direction of the switching path of the switching device is controlled in substantial parts by the shape of the ring.
  • the basic body itself is protected against the action of a switching arc. So an arc can attack at many points of the ring. This increases the stability of the ring.
  • the division into a hollow cylindrical body and a ring also has the further advantage that the hollow cylindrical body, for example, from a material of low density, such as aluminum, can be produced, whereby the total mass of the hollow cylindrical body and the attached arc-resistant material is reduced.
  • Arc-resistant materials are, for example, mixtures of the materials molybdenum (Mo), tungsten (W), Copper (Cu) and silver (Ag).
  • Mo molybdenum
  • W tungsten
  • Cu Copper
  • silver silver
  • As a material for the arc-resistant material for example, CuCrZr, CuZn39Pb3 or ECu57 can be used. These materials have a very high density, whereby the ring has a relatively high mass. In particular, when moving the equipped with the arc-resistant material rated current contact piece, the mass to be moved is limited by the multi-part design of the rated current contact piece.
  • the ring at its end facing away from the switching path end has a smaller radial wall thickness than at its end facing the switching path.
  • the ring is pressed by means of a Verbolzung in the axial direction of the hollow cylindrical body of the rated current contact piece.
  • a Verbolzung in the axial direction between the ring and the hollow cylindrical body allows to keep the outer contours of the ring and the hollow cylindrical body free of holes or other fasteners. This preserves the outer contour of the rated current contact piece. Furthermore, by an arrangement of the bolting in the axial direction in the interior of the hollow cylindrical base body, a sufficient volume is free to accommodate, for example, further modules or to direct the occurring during a switching operation quenching gas flows inside. For example, threaded rods, screw connections, pressed or crimped or glued bolts, etc. may be used for bolting.
  • the bolts are cage-like with their longitudinal axes parallel to the cylinder axis of the hollow cylindrical body. By a uniform distribution on the circumference of the hollow cylindrical body, a uniform contact pressure of the ring can be made against the hollow cylindrical body.
  • a further advantageous embodiment may provide that the hollow cylindrical base body has a radial projection, against which by means of a pressure element, an insulating body, in particular an insulating nozzle, is axially pressed.
  • the radial projection is a fixed stop for the insulating body.
  • the installation of the insulating body by means of a pressure element in a short time. Additional measurements, adjustments or adjustments of the insulator are therefore not necessary.
  • a pressure element for example, serve an annular disc which transmits the contact pressure uniformly on the insulating body. In this case, it is advantageous if the radial projection is also formed annularly circumferentially.
  • the hollow cylindrical base body has a reduced outer diameter at its end facing the switching path.
  • the radial projection on the hollow cylinder inner casing is arranged in the region of the reduced outside diameter.
  • a further advantageous embodiment can provide that the ring has fastening devices in the region of its enlarged radial wall thickness.
  • Sections with increased wall thickness allow flexible location of fasteners to be selected. At the same time, such sections have a relatively high mechanical strength.
  • fastening devices for example, threaded holes or other anchoring points are providable.
  • the in the FIG. 1 Switching device shown is a high-voltage circuit breaker 1.
  • a high-voltage circuit breaker 1 is used to switch rated currents and short-circuit currents.
  • the high-voltage power switch 1 has a first arcing contact piece 2 and a second arcing contact piece 3.
  • the first arcing contact piece 2 is substantially cylindrical in shape and has at its the switching path of the high-voltage circuit breaker 1 end facing a coating with an arc-resistant material.
  • the second arcing contact piece 3 is designed in the form of a tulip contact into which the first arcing contact piece 2 can be inserted. At its end facing the switching path, the second arcing contact piece 3 likewise has a coating of arc-resistant material.
  • the two arcing contact pieces 2, 3 are arranged axially opposite one another on a main axis 4. Concentric with the first arcing contact piece 2, a first rated current contact piece 5 is arranged. Concentric with the second arcing contact piece 3, a second rated current contact piece 6 is arranged.
  • the first rated current contact piece 5 has at its the switching path end facing a plurality of elastic contact fingers 7, which are in the closed state of the high-voltage circuit breaker 1 with the outer jacket of the second rated current contact piece 6 in electrically conductive contact.
  • the second arcing contact piece 3 is surrounded by an insulating material 8. The insulating material nozzle 8 is held on the second rated current contact piece 6.
  • the rated current contact pieces 5, 6 and the arcing contact pieces 2, 3 are along the main axis 4 relative to each other movable, in such a way that at a power-up first the arcing contact pieces 2, 3 and then contact the rated current contact pieces 5, 6. In the event of a switch-off operation, first the rated current contacts 5, 6 open, then the arcing contact pieces 2, 3 separate.
  • the second rated current contact piece 6 has a substantially hollow-cylindrical main body 6a.
  • the hollow cylindrical main body 6a is frontally covered with a ring 9 of arc-resistant material.
  • the ring also has a substantially hollow cylindrical structure, wherein the switching distance of the high-voltage circuit breaker 1 facing hollow cylinder top surface is rounded.
  • the wall thickness of the ring 9 at the side remote from the switching path side is lower than at its the switching path side facing. This is achieved in the present embodiment by increasing the inner diameter of the ring 9 on its side facing away from the switching path side.
  • a conical or parabolic course of the inner circumferential surface of the ring 9 or other suitable geometric shapes can be used.
  • the hollow cylindrical base body 6a has a reduced outer diameter at its end facing the switching path. The reduced outer diameter of the hollow cylindrical base body 6a and the enlarged inner diameter of the ring 9 are matched to one another such that the ring 9 can be plugged onto the hollow cylindrical base body 6a.
  • the ring 9 For pressing the ring 9 against the hollow cylindrical base body 6a, the ring 9 has a plurality of threaded holes into which bolts 10 can be screwed.
  • the bolts 10 are each supported on edges of recesses, which are arranged symmetrically distributed parallel to the main axis 4 in the shell of the hollow cylindrical body 6a.
  • the surface of the ring 9 is coated with a galvanic layer. This galvanic layer is for example a silver layer.
  • the hollow cylindrical base body 6a is provided with a galvanic coating.
  • the arrangement of the ring 9 made of arc-proof material also makes it possible to control high switching powers in which switching arcs occur even at the rated current contact pieces despite the use of arcing contact pieces.
  • the use of the arc-resistant ring 9 allows a compact design of a high-voltage circuit breaker.
  • FIG. 2 is a cut through the out of the FIG. 1 known high-voltage circuit breaker 1 shown. However, the cutting plane is pivoted about the main axis 4, so that now the attachment of the insulating material 8 can be seen.
  • the insulating material nozzle 8 is held by means of further bolts 11, which are screwed into threaded bores of the substantially hollow cylindrical base body 6a. In this case, the threaded holes are aligned such that the other bolts 11 are arranged as well as the bolts 10 parallel to the main axis 4.
  • the hollow cylindrical base body 6a has an annular projection 12. against the annular projection 12 a circumferential shoulder of the insulating material 8 is pressed.
  • the contact pressure of the shoulder against the annular projection 12 is generated by means of a pressure element 13 in the form of a pressure plate, which is held by the other bolts 11.
  • the annular projection 12 is disposed on the inner shell side of the substantially hollow cylindrical body 6a, in the portion 14 in which the outer diameter of the hollow cylindrical body 6a is reduced.
  • the FIG. 3 shows a section along in the FIGS. 1 and 2 shown section plane AA.
  • the pressure element 13 has an annular disk-shaped structure which has recesses which are penetrated by the further bolts 11. By means of the further bolts 11, the pressure element 13 is pressed against the projection 12 with the interposition of the projecting shoulder of the insulating material nozzle 8. Furthermore, the pressure element 13 is designed such that in order to achieve a small overall diameter of the arrangement, the pressure element 13 has lateral notches to allow attachment of the ring 9 by means of the bolts 10. By this constructive shape, it is possible independently of each other to secure the ring 9 and the insulating material 8. As a result, the two connections are decoupled from each other. Any disturbances or thermal expansions etc. of one connection point are thus largely kept away from the other connection.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Circuit Breakers (AREA)

Abstract

La présente invention concerne un dispositif de commutation électrique (1), en particulier un commutateur de puissance haute tension, présentant des pièces de contact à arc électrique (2, 3) et des pièces de contact à intensité nominale (5, 6). Au moins l'une des pièces de contact à intensité nominale (2, 3) présente une couche de matériau résistant aux arcs électriques. Le matériau résistant aux arcs électriques présente un revêtement galvanique.

Claims (4)

  1. Dispositif de commutation (1) comprenant une première et une deuxième pièces de contact d'arc électrique (2, 3) axialement opposées l'une à l'autre, ainsi qu'une première et une deuxième pièces de contact de courant nominal (5, 6) agencées coaxialement aux pièces de contact d'arc électrique (2, 3), au moins l'une des pièces de contact de courant nominal (6) présentant un corps de base (6a) cylindrique creux, qui, à son extrémité dirigée vers un parcours de commutation du dispositif de commutation (1), est recouvert frontalement d'un matériau (9) résistant aux arcs électriques, dans lequel, dans l'état pour lequel le dispositif de commutation (1) est en marche, des points de contact entre les deux pièces de contact de courant nominal (5, 6) se situent dans la zone du matériau (9) résistant aux arcs électriques, et le matériau (9) résistant aux arcs électriques, sous la forme d'un anneau (9), est fixé au corps de base (6a) cylindrique creux en recouvrant des surfaces frontales du corps de base (6a) cylindrique creux, et l'anneau (9) présente, à son extrémité éloignée du parcours de commutation, une épaisseur de paroi radiale plus petite qu'à son extrémité dirigée vers le parcours de commutation, et le corps de base (6a), à son extrémité dirigée vers le parcours de commutation, a un diamètre extérieur réduit, extrémité sur laquelle est enfilée l'anneau (9), caractérisé en ce que le matériau (9) résistant aux arcs électriques présente un revêtement électrolytique ou de galvanoplastie, et l'anneau est pressé, au moyen d'un boulon (10), dans la direction axiale, contre le corps de base (6a) cylindrique creux de la pièce de contact de courant nominal (6).
  2. Dispositif de commutation (1) selon la revendication 1,
    caractérisé en ce que
    le corps de base (6a) cylindrique creux présente une proéminence radiale (12) contre laquelle est pressé axialement, au moyen d'un élément de compression (13), un corps isolant (8), notamment une buse en matériau isolant.
  3. Dispositif de commutation (1) selon la revendication 2,
    caractérisé en ce que
    le corps de base (6a) cylindrique creux, à son extrémité dirigée vers le parcours de commutation, a un diamètre extérieur réduit et en ce que la proéminence radiale (12) est agencée sur l'enveloppe périphérique intérieure de cylindre creux, dans la zone du diamètre extérieur réduit.
  4. Dispositif de commutation (1) selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'anneau (9) présente des dispositifs de fixation, dans la zone de son épaisseur de paroi radiale augmentée.
EP04802681A 2003-11-11 2004-11-02 Dispositif de commutation Expired - Lifetime EP1683170B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10353497A DE10353497A1 (de) 2003-11-11 2003-11-11 Schalteinrichtung
PCT/DE2004/002455 WO2005048281A1 (fr) 2003-11-11 2004-11-02 Dispositif de commutation

Publications (3)

Publication Number Publication Date
EP1683170A1 EP1683170A1 (fr) 2006-07-26
EP1683170B1 EP1683170B1 (fr) 2007-09-05
EP1683170B2 true EP1683170B2 (fr) 2011-11-02

Family

ID=34559661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04802681A Expired - Lifetime EP1683170B2 (fr) 2003-11-11 2004-11-02 Dispositif de commutation

Country Status (5)

Country Link
US (1) US7679021B2 (fr)
EP (1) EP1683170B2 (fr)
CN (1) CN100449667C (fr)
DE (2) DE10353497A1 (fr)
WO (1) WO2005048281A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8232499B2 (en) * 2009-11-18 2012-07-31 Tyco Electronics Corporation Contactor assembly for switching high power to a circuit
FR2997222B1 (fr) 2012-10-19 2015-01-16 Alstom Technology Ltd Dispositif d'etablissement et/ou de coupure de courant a contacts permanents a usure reduite
DE102013200913A1 (de) * 2013-01-22 2014-07-24 Siemens Aktiengesellschaft Schaltanordnung
US10002733B2 (en) * 2016-03-02 2018-06-19 General Electric Technology Gmbh Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker
DE102016218518C5 (de) * 2016-09-27 2023-05-11 Siemens Energy Global GmbH & Co. KG Kontaktstück für einen Hochspannungs-Leistungsschalter sowie Verfahren zu dessen Herstellung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478980A (en) † 1994-04-05 1995-12-26 Abb Power T&D Company, Inc. Compact low force dead tank circuit breaker interrupter
US5567923A (en) † 1994-01-25 1996-10-22 Gec Alsthom T&D Sa Puffer circuit-breaker having a pneumatically-locked semi-moving piston
DE19910166A1 (de) † 1999-02-24 2000-09-21 Siemens Ag Hochspannungsleistungsschalter mit einer Kompressionseinrichtung
US6365863B1 (en) † 1997-08-29 2002-04-02 Siemens Aktiengesellschaft High voltage circuit-breaker with a counter-contact which can be actuated

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765599C (de) * 1940-02-25 1954-04-29 Siemens & Halske A G Verfahren zur Herstellung verschleissfester elektrischer Kontakte
US2504906A (en) * 1945-08-10 1950-04-18 Westinghouse Electric Corp Composite metal electric contact member
DE837866C (de) * 1948-12-31 1952-11-04 Forsch Probieramt Fuer Edelmet Werkstoff fuer elektrische Schaltelemente aus galvanisch hergestelltem Silber
US3588433A (en) * 1968-05-23 1971-06-28 Gen Electric Arcing contact structure and method of making same
DE4230060A1 (de) * 1992-09-07 1994-03-10 Siemens Ag Trennschalter mit in einem Isoliergas angeordneten Kontaktgliedern
DE19530512C1 (de) * 1995-08-18 1996-10-17 Siemens Ag Elektrisches Schichtkontaktelement, Halbzeug für Schichtkontaktelemente und Verfahren zu seiner Herstellung
DE19747840A1 (de) * 1997-10-20 1999-05-06 Siemens Ag Hochspannungsleistungsschalter
DE19837945A1 (de) * 1998-08-21 2000-02-24 Asea Brown Boveri Schaltanordnung und Verfahren zu ihrer Herstellung
DE19902835C2 (de) * 1999-01-20 2001-12-06 Siemens Ag Hochspannungsleistungsschalter mit einer Isolierdüse
DE19928080C5 (de) * 1999-06-11 2006-11-16 Siemens Ag Hochspannungsleistungsschalter mit einem Abströmkanal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5567923A (en) † 1994-01-25 1996-10-22 Gec Alsthom T&D Sa Puffer circuit-breaker having a pneumatically-locked semi-moving piston
US5478980A (en) † 1994-04-05 1995-12-26 Abb Power T&D Company, Inc. Compact low force dead tank circuit breaker interrupter
US6365863B1 (en) † 1997-08-29 2002-04-02 Siemens Aktiengesellschaft High voltage circuit-breaker with a counter-contact which can be actuated
DE19910166A1 (de) † 1999-02-24 2000-09-21 Siemens Ag Hochspannungsleistungsschalter mit einer Kompressionseinrichtung

Also Published As

Publication number Publication date
DE502004004908D1 (de) 2007-10-18
EP1683170A1 (fr) 2006-07-26
CN1871678A (zh) 2006-11-29
EP1683170B1 (fr) 2007-09-05
US7679021B2 (en) 2010-03-16
CN100449667C (zh) 2009-01-07
DE10353497A1 (de) 2005-06-09
US20070074963A1 (en) 2007-04-05
WO2005048281A1 (fr) 2005-05-26

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