EP0202496B1 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

Info

Publication number
EP0202496B1
EP0202496B1 EP86105620A EP86105620A EP0202496B1 EP 0202496 B1 EP0202496 B1 EP 0202496B1 EP 86105620 A EP86105620 A EP 86105620A EP 86105620 A EP86105620 A EP 86105620A EP 0202496 B1 EP0202496 B1 EP 0202496B1
Authority
EP
European Patent Office
Prior art keywords
half shells
contact member
circuit breaker
axis
compressed gas
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
Application number
EP86105620A
Other languages
German (de)
English (en)
Other versions
EP0202496A1 (fr
Inventor
Imre Horvath
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0202496A1 publication Critical patent/EP0202496A1/fr
Application granted granted Critical
Publication of EP0202496B1 publication Critical patent/EP0202496B1/fr
Expired legal-status Critical Current

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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
    • H01H33/02—Details
    • H01H33/025—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • the invention is based on a gas pressure switch according to the first part of claim 1.
  • Such a switch is described in EP-A-0 173 804.
  • the known switch has an insulating gas-filled housing with two contact pieces located inside the housing and movable along an axis relative to one another.
  • the power connections of this switch enter the interior of the housing diametrically to the axis and are guided there to the contact pieces transversely to the axis.
  • a secure current transfer from the power connection to the fixed contact piece is achieved by two half-shells forming the fixed contact piece and spaced apart from one another along a parting plane, and by two flat rails arranged parallel to one another and guided as a power connection to one of the two half-shells.
  • the invention as characterized in claim 1 solves the task of simplifying the gas pressure switch of the generic type while maintaining a safe current transfer from the power connection to the fixed contact piece.
  • the pressure gas switch according to the invention is characterized in that its contact system is simple in construction and can be exchanged without problems. At the same time, it is achieved in a simple manner that, regardless of the current to be conducted, there are always safe current transitions from the power connection to the fixed contact piece and from the fixed contact piece to the movable contact piece. Additional contact springs can therefore be extremely weak.
  • the compressed gas switch shown in FIG. 1 has a housing 1 filled with insulating gas, such as sulfur hexafluoride, at a pressure of a few bar.
  • insulating gas such as sulfur hexafluoride
  • bushings 2 and 3 are provided, through which a power connection 4 or 5 for a cylindrical contact piece 7 movable along an axis 6 or a hollow cylindrical fixed contact piece 8 is guided into the interior of the housing I. are.
  • the power connection 4 is connected to the movable contact piece 7 via a sliding contact (not shown), while the power connection 5 is directly connected to the fixed contact piece 8.
  • Both contact pieces 7, 8 are designed to be erosion-resistant and make contact with one another in the switch-on position inside a hollow insulating body 9 (left part of FIG. 1).
  • the movable contact piece 7 When switching off, the movable contact piece 7 is moved out of the fixed contact piece 8 located in the interior of the insulating material body 9 and a switching arc 10 burning inside the insulating material body 9 and thereby increasing the pressure of the insulating gas is drawn between the fixed 8 and moving contact piece 7 (right part of FIG . 1).
  • the fixed contact piece 8 is constructed from two parts which are designed as half-shells 11 and 12.
  • the two half-shells 11 and 12 are each supported on diametrically opposite sides on a compression spring 13 and 14, which in turn are supported in a cylindrical part of the insulating body 9 acting as a cage 15.
  • the two half-shells 11 and 12 are spaced apart from one another by a parting plane 16 running along the axis 6.
  • the half-shells 11, 12 are at a pressure predetermined by the compression springs 13, 14 with their material recesses 21, 22 delimiting parts on the power supply 5 and with the contact points 17, 18, 19, 20 supported on the movable contact piece 7.
  • compression springs 13, 14 are designed as leaf springs, as described in the previous exemplary embodiment, one ends of which in the area of the power connection 5 in points 23 and the other ends in the area of the contact points 17, 18, 19, 20 in points 24 on the outer sides of the half-shells 11 , 12 rest, differently acting contact forces can be achieved in a simple manner by forming support points 25 of the compression springs 13, 14 on the cage 15 at different distances from the support points 23 and 24, respectively.
  • the two contact points 17, 19 and 18, 20 are preferably symmetrical and each rotated by an angle a of 30 to 70 ° with respect to the parting plane 16 about the axis 6 on each of the two half-shells 11 and 12, respectively. If the angle ⁇ is selected to be comparatively small, for example approximately 40 °, then the comparatively large components acting parallel to the parting plane 16 cancel out the repulsive current forces caused by the current transfer from the half-shells 11 and 12 to the movable contact piece 7 and become vertical component of the repulsive current forces acting at the parting plane 16 can be comparatively small. For a given position of the half-shells 11, 12, with a comparatively low spring force of the compression springs 13 and 14, there will always be a safe two-line contact regardless of the strength of the current to be conducted or switched.
  • the current transfer from the power connection 5 to the half-shells 11 and 12 can take place in a corresponding manner through contact points 26, 27, 28, 29.
  • These contact points are constructed and arranged corresponding to the contact points 17, 18, 19, 20 with regard to the power connection 5.
  • these contact points also reduce the repulsive current forces that occur at the transition from the power connection 5 to the half-shells 11, 12, as a result of which the required spring forces of the compression springs 13, 14 are kept comparatively low even in the region of the end of the half-shells 11, 12 that has the current transition 5 can.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (7)

1. Interrupteur à gaz comprimé avec un boîtier (1) rempli de gaz isolant, deux pièces de contact (7, 8) se trouvant dans le boîtier (1), dont l'une est une pièce de contact fixe (8) cylindrique creuse et l'autre est une pièce de contact (7) coopérant avec la pièce de contact fixe (8), est de forme cylindrique et est mobile le long d'un axe (6), et avec deux raccords de courant (4, 5) reliés chacun, transversalement à l'axe (6), à une des pièces de contact (7, 8) dans lequel la pièce de contact fixe (8) est constituée de deux demi-coquilles (11, 12) espacées l'une de l'autre le long d'un plan de séparation (16) et dont les surfaces intérieures se faisant face présentent des zones de contact (17, 18, 19, 20) qui en position d'enclenchement de l'interrupteur touchent la pièce de contact mobile (7), caractérisé en ce que le raccord de courant (5) de la pièce de contact fixe (8) a une forme cylindrique et est mené dans le plan de séparation (16) jusqu'aux demi-coquilles (11, 12), et en ce que les longueurs des demi-coquilles (11, 12) dans la direction de l'axe (6), entre le raccord de courant (S) de la pièce de contact fixe (8) et les zones de contact (17, 18, 19, 20), sont dimensionnées de telle façon que les forces de répulsion apparaissant au passage de courant entre le raccord de courant (5) de la pièce de contact fixe (8) et les demi-coquilles (11, 12) et au passage de courant entre les demi-coquilles (11, 12) et la pièce de contact mobile (7) et les forces d'attraction agissant entre les demi-coquilles (11, 12) se compensent sensiblement.
2. Interrupteur à gaz comprimé suivant la revendication 1, caractérisé en ce que les longueurs des demi-coquilles (11, 12) dans la direction de l'axe (6), entre le raccord de courant (5) de la pièce de contact fixe (8) et les zones de contact (17, 18, 19, 20) sont au moins égales à 1 fois mais au maximum égales à 2,5 fois le diamètre moyen des demi-coquilles (11, 12).
3. Interrupteur à gaz comprimé suivant la revendication 2, caractérisé en ce que dans chacune des demi-coquilles (11, 12) sont posées deux zones de contact (17, 18, 19, 20) s'étendant parallèlement à l'axe (6) et dirigées radialement vers l'intérieur, constituées d'un matériau résistant à l'usure comme du cuivre au tungstène.
4. Interrupteur à gaz comprimé suivant la revendication 3, caractérisé en ce que les zones de contact (17, 19 ; 18, 20) sont disposées sur les demi-coquilles (11, 12) symétriquement et chacune décalée d'un angle de 30° à 70° par rapport au plan de séparation (16) autour de l'axe (6) .
5. Interrupteur à gaz comprimé suivant l'une ou l'autre des revendications 1 à 4, caractérisé en ce que les demi-coquilles (11, 12) présentent, à leurs extrémités des zones de contact (17, 18, 19, 20) des évidements (21, 22) se faisant face pour l'application des demi-coquilles (11, 12) sur le raccord de courant (5) de la pièce de contact fixe (8).
6. Interrupteur à gaz comprimé suivant la revendication 5, caractérisé en ce que les demi-coquilles (11, 12) s'appuyent à chacune de leurs extrémités sur un ressort de pression (13, 14) s'étendant parallèlement à l'axe (6).
7. Interrupteur à gaz comprimé suivant la revendication 6, caractérisé en ce que le ressort de pression (13, 14) a la forme d'une lamelle et s'appuie par un point d'appui (25) sur la paroi intérieure d'une cage (15).
EP86105620A 1985-05-20 1986-04-23 Interrupteur à gaz comprimé Expired EP0202496B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2134/85 1985-05-20
CH213485 1985-05-20

Publications (2)

Publication Number Publication Date
EP0202496A1 EP0202496A1 (fr) 1986-11-26
EP0202496B1 true EP0202496B1 (fr) 1989-02-22

Family

ID=4226663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105620A Expired EP0202496B1 (fr) 1985-05-20 1986-04-23 Interrupteur à gaz comprimé

Country Status (6)

Country Link
US (1) US4677265A (fr)
EP (1) EP0202496B1 (fr)
JP (1) JP2710773B2 (fr)
DE (1) DE3662167D1 (fr)
ES (1) ES8707628A1 (fr)
IN (1) IN166990B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0167544B1 (ko) * 1988-11-28 1999-01-15 미다 가쓰시게 개폐기

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806926A (en) * 1955-06-29 1957-09-17 Mc Graw Edison Co Electric contact
CH355497A (de) * 1958-02-11 1961-07-15 Bbc Brown Boveri & Cie Tulpenkontakt
BE636341A (fr) * 1963-05-02
DE2350832B2 (de) * 1973-10-10 1980-05-08 Calor-Emag Elektrizitaets-Aktiengesellschaft, 4030 Ratingen Hochspannungsschalter
JPS51115663A (en) * 1975-04-04 1976-10-12 Hitachi Ltd Current collector for breaker
JPS53117767A (en) * 1977-03-24 1978-10-14 Mitsubishi Electric Corp Switch
JPS5553838U (fr) * 1978-10-06 1980-04-11
JPS5869414A (ja) * 1981-10-16 1983-04-25 株式会社日立製作所 ガス絶縁開閉装置
JPS5949122A (ja) * 1982-09-13 1984-03-21 三菱電機株式会社 電力用しや断器

Also Published As

Publication number Publication date
JP2710773B2 (ja) 1998-02-10
JPS61267215A (ja) 1986-11-26
US4677265A (en) 1987-06-30
ES555099A0 (es) 1987-08-01
DE3662167D1 (en) 1989-03-30
IN166990B (fr) 1990-08-18
EP0202496A1 (fr) 1986-11-26
ES8707628A1 (es) 1987-08-01

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