EP1032009B1 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

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Publication number
EP1032009B1
EP1032009B1 EP19990122825 EP99122825A EP1032009B1 EP 1032009 B1 EP1032009 B1 EP 1032009B1 EP 19990122825 EP19990122825 EP 19990122825 EP 99122825 A EP99122825 A EP 99122825A EP 1032009 B1 EP1032009 B1 EP 1032009B1
Authority
EP
European Patent Office
Prior art keywords
current
current path
contact
gas blast
blast switch
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.)
Revoked
Application number
EP19990122825
Other languages
German (de)
English (en)
Other versions
EP1032009A3 (fr
EP1032009A2 (fr
Inventor
Viktor Dipl.Ing. Bierich
Jürgen Dipl.Ing. Faber
Andreas Dipl.-Ing. Schiemann
Achim Dipl.-Ing. Stelter
Dieter Dipl.-Ing. Vondereck
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.)
GE Grid GmbH
Original Assignee
Areva Energietechnik GmbH
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=7898611&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1032009(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Areva Energietechnik GmbH filed Critical Areva Energietechnik GmbH
Publication of EP1032009A2 publication Critical patent/EP1032009A2/fr
Publication of EP1032009A3 publication Critical patent/EP1032009A3/fr
Application granted granted Critical
Publication of EP1032009B1 publication Critical patent/EP1032009B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
    • 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
    • H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts

Definitions

  • the invention relates to a compressed gas switch, as it is known for example from German Patent DE 196 31 323 C1.
  • the gas blast switch for interrupting large currents is described, which has an existing two contact pieces break point.
  • Each of the two contact pieces is electrically connected via spring contacts with a power supply, which are accessible from the outside via fittings, and where the current to be switched is supplied.
  • the two contact pieces are coupled together via a transmission device such that they can be moved in opposite directions to each other by a single drive in the longitudinal direction.
  • the transmission device has a lever on which two rods are pivotally supported. The first of the two rods is connected to an insulating nozzle, which is held on the first of the two contact pieces.
  • the other second rod is attached to a contact unit body electrically connected to the second contact piece.
  • the bell crank is pivotable about an axis of rotation, which in turn is mounted within the gas pressure switch and electrically connected to the associated to the second contact piece second connector. This results in the main current path, which extends from the second contact piece via the spring contact and the power supply to the second connector, a parallel current path, which leads from the second contact piece via the contact unit body, the second rod, the lever and the rotation axis to the second connector.
  • the object of the invention is to provide a gas pressure switch, in which without major effort damage to mechanical parts of the parallel flow path is prevented.
  • the invention is based on the finding that, on the one hand, mechanical components of the parallel-current path can be damaged by a large current, but on the other hand, it is not necessary to completely interrupt the current in the parallel-current path. Instead, it has been recognized in the invention that it is sufficient if at least no large current flows over the parallel current path. This is achieved according to the invention by a current-reducing component in the parallel-current path. By the on this reduced current will not damage mechanical components in the parallel current path.
  • such a current-reducing component can be, for example, an ohmic or an inductive resistor or the like.
  • a resistor can be realized with substantially less effort than the isolation point for the complete interruption of the parallel-current path in the German patent DE 197 38 697 C1.
  • the current-reducing component consists of a ferromagnetic material.
  • the ferromagnetic material of the current-reducing component has the consequence that a current flowing through this component is displaced to the outside.
  • the AC resistance of this component is a multiple of the DC resistance. This increase in AC resistance due to current displacement reduces the current in the parallel current path. Thus, no large current flows through the current-reducing component. Thus, the risk of damage to mechanical parts in the parallel current path - as mentioned - no longer exists.
  • the components of the parallel-current path can be made of materials as hitherto, which have high strength and high stability.
  • the compressed gas switch according to the invention thus has in comparison to the German patent DE 196 31 323 C1 essentially the same mechanical properties. From the use of the current-reducing component in the parallel current path thus arises in so far no disadvantage.
  • the transfer device can be any type of coupling of the two contact pieces, ie also a transfer device, as described in German Patent DE 197 38 697 C1 or in European Patent Application EP 313 813 A1 is described.
  • the ferromagnetic material has a relative permeability constant which is very high compared to one.
  • the current-reducing component consists of iron or nickel or cobalt or a mixture thereof.
  • This AC resistance causes - as mentioned - a reduction of the current in the parallel current path.
  • the compressed gas switch is provided to interrupt a certain maximum current, so that the current can be limited via the parallel current path to a desired maximum safe value at which a damage to components of the parallel current path is not to be feared.
  • the invention not only in connection with a Transfer device can be applied.
  • the invention can be used wherever a gas flow in a parallel flow path would cause a large current to damage mechanical parts. According to the invention this large current is reduced by a current-reducing component in the Parellelstrompfad.
  • the current-reducing component does not necessarily have to be a component made of ferromagnetic material.
  • any component can be used which is suitable for reducing or limiting the current.
  • FIGURE of the drawing shows a schematic sectional view of an embodiment of a compressed gas switch according to the invention in the off position.
  • the gas pressure switch shown in the single figure of the drawing is filled with insulating glass, such as SF6 and laterally surrounded by a tubular insulator 1.
  • insulating glass such as SF6
  • tubular insulator 1 With regard to the switch type, it is an outdoor switch.
  • the compressed gas switch has two counter-displaceable along its central axis M slidable contacts 2 and 3, which form a point of interruption.
  • the second contact piece 2 is a contact pin and attached to the bottom of a cup-shaped contact unit body 4.
  • the contact unit body 4 surrounds the contact piece 2 and the center axis M of the gas pressure switch coaxially and has with its opening toward the point of interruption, downwards.
  • the contact unit body 4 projects telescopically into a tubular part of a power supply 5 (for the contact piece 2) which is open in the direction of the point of interruption and can be moved out of it.
  • the power supply 5 surrounds, also coaxially the center axis M of the gas pressure switch.
  • a reversing lever 6 is arranged above the contact unit body 4, the axis of rotation 17 intersects the longitudinal axis of the gas pressure switch at a right angle.
  • the axis of rotation 17 is fastened in particular to the power supply 5 within the compressed gas switch and is thus electrically connected to the power supply 5.
  • the lever 6 has two lever arms, at the outer ends of each rotatable a rod 7, 8 is mounted. Both rods 7, 8 protrude downwards.
  • the first rod 7 is rotatably mounted at its lower end in the upper end portion of a Isolierstoffdüse 9.
  • the insulating nozzle 9 laterally surrounds the mutually facing ends of the first contact piece 3 and the second contact piece 2.
  • the Isolierstoffdüse 9 is attached to the upper end of a hollow cylindrical metal contact body 10 which coaxially encloses both the center axis M of the gas pressure switch and partly the contact piece 3.
  • this contact piece 3 is a tulip contact, which touches the contact piece 2 at its end portion on the circumference in the on state of the gas pressure switch.
  • the contact piece 3 is attached to the bottom of the contact body 10 and electrically connected to it.
  • the compressed gas switch works according to the pressure chamber principle.
  • the interior of the contact body 10 is closed at the end remote from the point of interruption by a bottom.
  • the interior of the contact body 10 serves as a pressure chamber 19.
  • In this pressure chamber 19 penetrates at a switch-off first of the arc heated insulating gas.
  • the gas pressure in the switching path decreases and the insulating gas temporarily stored in the pressure chamber 19 flows through a constriction in the insulating nozzle 9 into the area of the switching path and inflates the arc.
  • the blowing out of the arc is produced by means of a compression device consisting of the fixed part of the power supply line 14 and a movable piston 21, which is at the same time the bottom of the pressure chamber 19.
  • the movable piston 21 and the cylinder surround a compression space 20.
  • the extinguishing gas flows during the blowing of the arc from the compression chamber 20 via check valves 23 to the pressure chamber 19 and from there to the insulating nozzle 9.
  • Pressure relief valves 24 limit the pressure in the compression chamber 20 and thus relieve the drive 11th
  • Check valves 25 release the gas flows into the compression space 20 when switched on.
  • a vertically in the drive rod 12 is moved upwards during a switch-on process and during a switch-off operation downwards.
  • the drive rod 12 continues in the direction of the point of interruption in a remindblasrohr 26.
  • the drive rod 12 is coaxially surrounded by a tubular insulator 13. At the top, the insulator 13 is adjoined by the end of a current supply 14 for the tulip contact piece.
  • the power supply 14 coaxially surrounds the central axis M of the gas pressure switch and is tubular, with its lower end is guided dish-shaped horizontally to the outside. There are the external area of the gas pressure switch electrical connection options available, in particular a connector for the supplied power. Inside, an opening for the drive rod 12 is present in the plate-shaped end of the power supply 14. This opening coincides with the internal cross-sectional area of the tubular part of the power supply 14.
  • the insulator 1 On the plate-shaped end of this power supply 14, the insulator 1 is mounted. The transitions from the insulator 1 and the insulator 13 to the plate-shaped end of the power supply 14 are each made gas-tight.
  • the contact body 10 can be telescoped in switching operations in the power supply 14 and move out of her.
  • spring contacts 18, which are attached to the upper edge of the power supply 14 there is a conductive contact between the power supply 14 and the contact body 10 with the contact piece in each switch position.
  • the contact body 10 is attached to the insulating material 9.
  • the Isolierstoffdüse 9 has at its end facing away from the contact piece 3 a plate-shaped power transmission element 15 made of metal, which extends from the insulating material 9 radially to the inner wall of the cup-shaped contact unit body 4.
  • the inner wall of the contact unit body 4 is a sliding connection with one or more rings made of PTFE. In this way, the insulating material 9 is guided with the rotatably mounted rod 7.
  • the other moves to the lever 6 mounted second rod 8. It is attached at its lower end via a hinge at the bottom of the contact unit body 4 and that at the point of interruption away from the side.
  • the contact unit body 4 is guided through the tubular part of the power supply 5. As a result, provision is also made for a rectilinear guidance of the force transmission element 15, which in turn is slidably mounted within the contact unit body 4.
  • Spring contacts 22 on the inner wall of the power supply 5 provide a conductive contact between the power supply 5 and the outer wall of the (metal) contact unit body. 4
  • the power supply 5 goes over the top into a lid which seals the insulator 1 gas-tight upwards and on the outside electrical connection options or fittings are available.
  • the drive rod 12 is moved upwards with the blow-back tube 26 and the contact body 10.
  • the contact unit body 4 shifts downwards.
  • the contact pieces 2 and 3 Upon reaching a certain stroke, first the contact pieces 2 and 3 come into contact with each other.
  • the rated current contacts 16, which are fastened in the lower region of the contact unit body 4 come into contact with the outer wall of the contact body 10 and allow current to flow via the upper power supply 5, the contact body 10 and the lower one Power supply 14. Also in the closed position, the (rated) current flows through the mentioned elements.
  • the main current path extends from the contact piece 2 via the contact unit body 4, the spring contacts 22 and the power supply 5 to the cover of the power supply 5, which constitutes a connection piece for the supply of the current.
  • the parallel current path extends from the contact piece 2 via the contact unit body 4, the second rod 8, the associated lever arm, the reversing lever 6, the rotation axis 17 and the power supply 5 to the above-mentioned, a connecting piece performing cover of the power supply. 5
  • the second rod 8 is made of a ferromagnetic material. This is done in the second rod 8, a displacement of the flow to the outside. Due to this current displacement, the AC resistance is a multiple of the DC resistance. Thus, the second rod 8 is a current-reducing component in the parallel-current path.
  • the AC resistance of the second rod 8 is dependent on the relative permeability constants of the ferromagnetic material used. This constant should be as large as possible compared to one. This can be achieved, for example, by the use of iron, nickel or cobalt or mixtures thereof as material for the second rod 8. In this way, any desired AC resistance can be adjusted via the choice of the material used or their mixture.

Landscapes

  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Claims (6)

  1. Disjoncteur à gaz comprimé possédant les caractéristiques suivantes :
    - le disjoncteur à gaz comprimé présente un point d'interruption,
    - le point d'interruption présente deux pièces de contact (2, 3),
    - de chacune des deux pièces de contact (2, 3) part un trajet de courant principal (2, 4, 22, 5 ; 3, 10, 14) rejoignant une pièce de raccordement (5, 14),
    - l'un des deux trajets de courant principal (2, 4, 22, 5) dispose d'un trajet de courant parallèle (2, 4, 8, 6, 17, 5),
    caractérisé en ce que le trajet de courant parallèle (2, 4, 8, 6, 17, 5) comporte un composant de réduction de courant (8).
  2. Disjoncteur à gaz comprimé selon la revendication 1 possédant la caractéristique supplémentaire suivante :
    le composant de réduction de courant (8) est fabriqué dans un matériau ferromagnétique.
  3. Disjoncteur à gaz comprimé selon la revendication 2 possédant les caractéristiques supplémentaires suivantes :
    - les deux pièces de contact (2, 3) sont couplées entre elles par l'intermédiaire d'un dispositif de transmission,
    - le trajet de courant parallèle passe au moins en partie par le dispositif de transmission,
    - un composant (8) du dispositif de transmission est fabriqué dans le matériau ferromagnétique.
  4. Disjoncteur à gaz comprimé selon la revendication 3 possédant les caractéristiques supplémentaires suivantes :
    - le dispositif de transmission est pourvu d'un levier de renvoi (6) comportant deux bras de levier,
    - l'un des deux bras de levier est relié à une buse d'injection de matière isolante (9),
    - l'autre bras de levier est relié électriquement à l'une des deux pièces de contact (2) par l'intermédiaire d'une tige (8),
    - le trajet de courant parallèle s'étend de cette pièce de contact (2) à la pièce de raccordement en passant par la tige (8), l'autre bras de levier et le levier de renvoi (6),
    - la tige (8) est fabriquée dans le matériau ferromagnétique.
  5. Disjoncteur à gaz comprimé selon l'une des revendications 2 à 4 possédant la caractéristique supplémentaire suivante :
    - le matériau ferromagnétique présente une constante de perméabilité relative qui est bien supérieure à un.
  6. Disjoncteur à gaz comprimé selon l'une des revendications 2 à 5 possédant la caractéristique supplémentaire suivante :
    - le composant de réduction de courant est composé de fer ou de nickel ou de cobalt ou d'un mélange des trois.
EP19990122825 1999-02-24 1999-11-17 Interrupteur à gaz comprimé Revoked EP1032009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19907838 1999-02-24
DE1999107838 DE19907838A1 (de) 1999-02-24 1999-02-24 Druckgasschalter

Publications (3)

Publication Number Publication Date
EP1032009A2 EP1032009A2 (fr) 2000-08-30
EP1032009A3 EP1032009A3 (fr) 2001-08-29
EP1032009B1 true EP1032009B1 (fr) 2006-08-02

Family

ID=7898611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990122825 Revoked EP1032009B1 (fr) 1999-02-24 1999-11-17 Interrupteur à gaz comprimé

Country Status (2)

Country Link
EP (1) EP1032009B1 (fr)
DE (2) DE19907838A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906642B1 (fr) * 2006-09-29 2008-12-19 Areva T & D Sa Actionnement par came cylindrique des contacts d'une chambre de coupure a double mouvement.
FR2906929B1 (fr) 2006-10-09 2009-01-30 Areva T & D Sa Actionnement par des contacts d'une chambre de coupure a double mouvement par un tube isolant
FR2977972A1 (fr) 2011-07-12 2013-01-18 Alstom Grid Sas Dispositif interrupteur pour haute tension dans un reseau electrique
FR2980033B1 (fr) 2011-09-12 2013-12-06 Alstom Grid Sas Chambre de coupure pour disjoncteur
DE202014010434U1 (de) 2014-02-12 2015-08-03 Alstom Technology Ltd Elektrisches Hochspannungsschaltgerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH675175A5 (fr) * 1987-10-27 1990-08-31 Bbc Brown Boveri & Cie
DE4427163A1 (de) * 1994-08-01 1996-02-08 Abb Management Ag Druckgasschalter
DE19622460C2 (de) * 1996-05-24 1998-04-02 Siemens Ag Hochspannungs-Leistungsschalter mit zwei antreibbaren Schaltkontaktstücken
DE19631323C1 (de) * 1996-08-01 1997-10-16 Aeg Energietechnik Gmbh Druckgasschalter
DE19738697C1 (de) * 1997-08-29 1998-11-26 Siemens Ag Hochspannungsleistungsschalter mit antreibbarem Gegenkontaktstück

Also Published As

Publication number Publication date
EP1032009A3 (fr) 2001-08-29
DE19907838A1 (de) 2000-08-31
DE59913734D1 (de) 2006-09-14
EP1032009A2 (fr) 2000-08-30

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