WO1992016001A1 - Interrupteur electrique a haute tension - Google Patents

Interrupteur electrique a haute tension Download PDF

Info

Publication number
WO1992016001A1
WO1992016001A1 PCT/DE1992/000025 DE9200025W WO9216001A1 WO 1992016001 A1 WO1992016001 A1 WO 1992016001A1 DE 9200025 W DE9200025 W DE 9200025W WO 9216001 A1 WO9216001 A1 WO 9216001A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
contact piece
voltage switch
piece
electrical high
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.)
Ceased
Application number
PCT/DE1992/000025
Other languages
German (de)
English (en)
Inventor
Heiner Marin
Volker Lehmann
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
Publication of WO1992016001A1 publication Critical patent/WO1992016001A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/027—Composite material containing carbon particles or fibres

Definitions

  • the invention relates to an electrical high-voltage switch with a contact piece.
  • Such a high-voltage switch is known from DE-OS-25 43 845.
  • the switch described there has two contact tubes which face each other at a fixed distance and are connected to one another as required by a bridging contact piece.
  • an arcing contact is provided in the interior of the contact tubes, which is separated in time when the switch is switched off after the main contact.
  • the arcing contact there has an axially movable arcing contact pin which is connected to the drive of the switch.
  • the object of the present invention is to design a contact piece of a high-voltage switch of the type mentioned at the outset to be particularly stable and resistant to erosion.
  • the contact piece is made of carbon fiber reinforced carbon (CFC).
  • the abrasion resistance and the erosion resistance are very large, so that no contact problems due to wear in the area of a sliding contact on the contact piece are to be feared even over a long period of time when the switch is operated.
  • the material CFC conducts the switching current well enough and the conduction properties improve with increasing temperature.
  • the mechanical properties of the carbon fiber-reinforced carbon also improve with increasing temperature.
  • the material in particular becomes tougher and more elastic.
  • the invention can advantageously be designed in that the contact piece is held in a recess in a drive rod by a shrink fit.
  • Such a holder requires minimal construction and assembly effort and ensures the required stability over a wide temperature range.
  • the arcing contact pin is secured in the recess by a locking pin.
  • the locking pin holds the arcing contact pin in the recess in the drive rod until the shrink fit is solidified again by lowering the temperature.
  • the locking pin is advantageously inserted through a cross hole in the drive rod by passing through a hole in the arcing contact pin.
  • the contact piece is made in one piece from CFC, so that, in particular at its end facing the arc chamber, no special arc-proof parts need to be provided.
  • the contact piece can therefore be made in one piece
  • CFC material can be manufactured. This facilitates both the Manufacture and assembly of the arcing contact.
  • the contact piece has self-resilient contact fingers and that carbon fibers are arranged in the contact fingers running parallel to their longitudinal direction.
  • the contact piece can advantageously be made in one piece with the contact fingers.
  • the invention can also be advantageously designed in that the contact piece is manufactured by pressing, winding or laminating from a staple fiber fabric, a roving fabric or rovings and the carbon material as a tube and the contact fingers are formed by machining the tube.
  • the application of the invention has a particularly advantageous effect if the contact piece is an arcing contact piece which opens after a main contact.
  • FIG. 1 shows, as a first exemplary embodiment, a contact tube with an arc electrode in longitudinal section
  • Figure 2 shows the arrangement of Figure 1 in cross section.
  • Figure 3 shows another embodiment in the form of a contact device for a high-voltage switch, consisting of a contact piece and a mating contact piece, in part on average.
  • FIG. 4 shows a schematic view of the contact piece according to FIG. 3 viewed from the counter contact piece.
  • a contact tube of a high-voltage circuit breaker is shown schematically in FIG.
  • a circuit breaker usually contains two of these contact tubes, which face each other and between which an arc space is arranged.
  • the contact tubes 1 also serve to discharge the extinguishing gases.
  • an arcing contact pin 2 made of carbon fiber-reinforced carbon is provided as the contact piece, which engages in a tulip-shaped mating contact (not shown) when the switch is switched on.
  • the arcing contact pin 2 is moved in the axial direction by the drive of the switch during the switching movement.
  • a sliding contact device 3 is provided for mediating an electrical contact between the arcing contact pin 2 and the contact tube 1.
  • the sliding contact device 3 consists of the electrically conductive ring 4, which is supported by webs 5, 6, 7 in the contact tube 1.
  • the webs 5, 6, 7 are integrally connected to the ring 4.
  • the ring and webs are made in the form of a one-piece metal investment casting.
  • the ring 4 has on its inner lateral surface a recess 8 in which a commercially available lamella contact 9 is arranged, which slides on the surface of the arcing contact pin.
  • Each of the webs 5, 6, 7 has at its end facing the inner surface of the contact tube 1 in the end surface a groove 10 which extends in the axial direction of the contact tube 1.
  • a coil spring 11 is inserted, which is stretched between the inner wall of the contact tube 1 and the bottom of the groove 10. This makes the sliding contact direction 3 held non-positively in the contact tube 1 and contacted with this.
  • a shoulder 12 is provided on the inner wall of the contact tube 1, which serves the sliding contact device as a stop for fixing in the axial direction. On the side of the sliding contact device 3 opposite the shoulder 12, it is fixed by a nozzle 13 screwed into the contact tube 1.
  • the arcing contact pin 2 is fixed by a shrink fit in the recess 13 of the switching rod 14.
  • the connection is secured by a locking pin 15.
  • the contact device according to FIGS. 3 and 4 has an essentially tubular contact piece 21 which has self-resilient contact fingers 22.
  • the tubular contact piece 21 comprises a coaxially arranged counter contact piece 23 with the contact fingers 22 resiliently.
  • the contact pieces 21, 23 are moved towards one another in the direction of arrow 24a, 24b until the tip 23a dips into the interior space formed by the contact fingers 22.
  • the contact piece 21 is made in one piece with the contact fingers 22.
  • the contact piece 21 consists of carbon, in particular graphite, with the good burning properties known from switch construction, in particular for SFg switches, under the action of an arc.
  • the carbon material is carbon fiber reinforced in order to ensure in the area of the contact fingers 22 that the inherent high breaking sensitivity of the carbon material is reduced, the self-resilient properties of the contact fingers 22 being achieved by a special orientation of the carbon fibers.
  • the reinforcing fibers in the contact fingers 22 run essentially parallel to the longitudinal axes of the contact fingers 22.
  • a contact piece blank is first produced by pressing, winding or laminating from a staple fiber fabric, a roving fabric or rovings on the one hand and the carbon material on the other hand as a tube.
  • the contact fingers 22 can be formed in a subsequent process step by machining the tube, in particular by saw cuts 25.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Dans un interrupteur électrique à haute tension, une pièce de contact (2, 21) est en carbone renforcé par fibres de carbone (CFC). Ce matériau est mécaniquement assez stable et en outre très résistant à l'usure par combustion. En outre, on obtient un faible poids de la pièce de contact (2, 21); ainsi, au cas où la pièce de contact est entraînée, l'énergie d'entraînement est réduite.
PCT/DE1992/000025 1991-02-28 1992-01-16 Interrupteur electrique a haute tension Ceased WO1992016001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914106642 DE4106642A1 (de) 1991-02-28 1991-02-28 Kontaktvorrichtung fuer hochspannungsschalter
DEP4106642.1 1991-06-07

Publications (1)

Publication Number Publication Date
WO1992016001A1 true WO1992016001A1 (fr) 1992-09-17

Family

ID=6426295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000025 Ceased WO1992016001A1 (fr) 1991-02-28 1992-01-16 Interrupteur electrique a haute tension

Country Status (2)

Country Link
DE (1) DE4106642A1 (fr)
WO (1) WO1992016001A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022053391A1 (fr) * 2020-09-14 2022-03-17 Siemens Energy Global GmbH & Co. KG Disjoncteur haute tension à liaison par ajustement fretté et procédé de fabrication du disjoncteur haute tension

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160331B4 (de) * 2001-09-19 2005-09-08 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co Kontakt oder Elektrodenanordnung
MX2013013363A (es) 2013-11-15 2015-05-15 Mikhail Sotnikov Contactos electricos con una seccion reducida de aluminio.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191240A2 (fr) * 1972-06-27 1974-02-01 Siemens Ag
FR2287100A1 (fr) * 1974-10-01 1976-04-30 Reyrolle Parsons Ltd Disjoncteur electrique pour haute tension
EP0205897A2 (fr) * 1985-06-24 1986-12-30 BBC Brown Boveri AG Contact d'arc et procédé de fabrication de ce contact ou un élément similaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191240A2 (fr) * 1972-06-27 1974-02-01 Siemens Ag
FR2287100A1 (fr) * 1974-10-01 1976-04-30 Reyrolle Parsons Ltd Disjoncteur electrique pour haute tension
EP0205897A2 (fr) * 1985-06-24 1986-12-30 BBC Brown Boveri AG Contact d'arc et procédé de fabrication de ce contact ou un élément similaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022053391A1 (fr) * 2020-09-14 2022-03-17 Siemens Energy Global GmbH & Co. KG Disjoncteur haute tension à liaison par ajustement fretté et procédé de fabrication du disjoncteur haute tension

Also Published As

Publication number Publication date
DE4106642A1 (de) 1992-09-03

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