WO2005062330A1 - Chambre d'extinction d'arc et disjoncteur haute puissance a fort soufflage d'arc - Google Patents

Chambre d'extinction d'arc et disjoncteur haute puissance a fort soufflage d'arc Download PDF

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Publication number
WO2005062330A1
WO2005062330A1 PCT/CH2004/000740 CH2004000740W WO2005062330A1 WO 2005062330 A1 WO2005062330 A1 WO 2005062330A1 CH 2004000740 W CH2004000740 W CH 2004000740W WO 2005062330 A1 WO2005062330 A1 WO 2005062330A1
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WO
WIPO (PCT)
Prior art keywords
volume
compression
expansion
compression volume
switch
Prior art date
Application number
PCT/CH2004/000740
Other languages
German (de)
English (en)
Inventor
Andreas Nohl
Timo Kehr
Oliver Cossalter
Michael Pohle
Joachim Stechbarth
Cornelia Zachaeus
Original Assignee
Abb Technology 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 Abb Technology Ag filed Critical Abb Technology Ag
Publication of WO2005062330A1 publication Critical patent/WO2005062330A1/fr

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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
    • H01H33/91—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 the arc-extinguishing fluid being air or gas
    • 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
    • H01H2033/907—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 using tandem pistons, e.g. several compression volumes being modified in conjunction or sequential
    • 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
    • H01H2033/908—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 using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume
    • 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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • H01H33/903—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 making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism

Definitions

  • the invention relates to the field of high-performance switch technology. It relates to an arcing chamber according to the preamble of claim 1 and a corresponding high-performance switch.
  • Such an arcing chamber and a corresponding high-performance switch are known, for example, from published patent application DE 1 95 36 673 AI.
  • This switch has at least one cylindrical quenching chamber which is provided with a fixed contact, with a movable contact and with an extinguishing zone between the two contacts.
  • a shaft of the movable contact is firmly connected to a heating volume which is closed on the fixed contact side by an insulating nozzle penetrated by at least one heating channel.
  • the quenching chamber has a first compression volume, which is operatively connected to the heating volume and a second compression volume. Between The first and the second compression volume are provided with a movable auxiliary piston which is connected to the movable contact via a deflection device.
  • the auxiliary piston is moved antiparallel to the direction of movement of the movable contact piece, so that the first compression volume is initially compressed, while the second compression volume sucks in clean extinguishing gas.
  • the auxiliary piston is then moved parallel to the direction of movement of the movable contact piece, so that the first compression volume is supplied with clean extinguishing gas from the second compression volume. This will strengthen
  • the high-performance switch described has the disadvantage that it requires a deflection device to achieve the relatively complicated auxiliary piston movement.
  • strong blowing of the arc and thus a more reliable switching, even in difficult switching cases, are to be achieved, without the need for a deflection device.
  • the blowing should take place using as clean a gas as possible.
  • the quenching chamber according to the invention for a high-performance circuit breaker is filled with an extinguishing gas and has:
  • first contact piece and a second contact piece at least one of which is a movable contact piece and which are movable relative to one another by means of a drive
  • the expansion volume allows an effective enlargement of the extinguishing gas available for blowing the arc, which is located in the two compression volumes. Because the total volume formed by the two compression volumes does not have to be constant, but can decrease during a switch-off process in favor of the expansion volume.
  • the expansion volume can advantageously be connected to a reservoir volume (tank volume) or an outflow channel, so that an increase in the expansion volume during a switch-off process does not represent any appreciable additional load for a drive that drives the movable contact piece.
  • the expansion volume and the second compression volume are arranged in such a way that a volume change in the second compression volume brings about an opposite, equal volume change in the expansion volume.
  • the expansion volume and the second compression volume can share the same space (the same total volume), and a piston of a piston-cylinder arrangement including the expansion volume can be identical to a piston of a piston-cylinder arrangement including the second compression volume. This enables a simple construction of the arcing chamber. And the arcing chamber can have a small construction volume.
  • the first compression volume is connected to the second compression volume by an inflow channel.
  • the quenching chamber has an axis, and the first compression volume is connected to the second compression volume by an inflow channel which extends parallel to the axis.
  • the two compression volumes can be arranged one behind the other with respect to the axis, which enables a slim design of the quenching chamber (small construction volume of the quenching chamber).
  • the volume occupied by the inflow channel is small if it is elongated is designed so that, for a given quench chamber volume, the amount of gas available for blowing by compression of the compression volumes can be large.
  • a pressure control valve is advantageously arranged in the inflow channel to open the inflow channel if there is a pressure p 2 in the second compression volume which is greater than a pressure pi in the first compression volume by at least a predeterminable pressure difference ⁇ p and otherwise to close the inflow channel.
  • At least one of the contact pieces is penetrated by an outflow channel, and the expansion volume is connected to the outflow channel.
  • Expansion volume presses against the piston of a piston-cylinder arrangement ending the expansion volume. If this piston is at the same time the piston of a piston-cylinder arrangement containing the second compression volume, the piston represents a differential piston. In addition, this is the expansion volume absorbed gas contaminated quenching gas, so that gas of greater cleanliness is available for arc blowing during further switching operations. Opening the expansion volume to the outflow channel can also prevent the formation of negative pressures in the expansion volume if it is enlarged during a switch-off process. Such a vacuum would lead to an additional load on the drive.
  • the quenching chamber advantageously has a reservoir volume (tank volume) and the expansion volume is connected to the reservoir volume.
  • a reservoir volume tank volume
  • the expansion volume is connected to the reservoir volume.
  • clean extinguishing gas can be sucked into the expansion volume and / or extinguishing gas, in particular contaminated extinguishing gas, can be released from the expansion volume into the reservoir volume. Opening the expansion volume to the reservoir volume can prevent the formation of negative pressures in the expansion volume.
  • the reservoir volume is typically contained in an insulating arcing chamber housing.
  • a valve is particularly advantageously provided for closing the connection between the expansion volume and the outflow channel during a switch-on process and for opening the connection between the expansion volume and the outflow channel a switch-off process.
  • contaminated extinguishing gas is absorbed by the expansion volume during a switch-off process and released to the reservoir volume during a switch-on process.
  • contaminated extinguishing gas is effectively removed from the extinguishing zone with each switching cycle, as a result of which the extinguishing chamber has a permanently good switching effect.
  • the valve can advantageously be sleeve-shaped (sleeve valve), advantageously such that it on a cylindrical outflow pipe containing the outflow channel.
  • the valve can, for example, be designed such that it can be switched by pressure differences, or that it can be switched as a function of the drive movement.
  • a valve is particularly advantageously provided for closing the connection between the expansion volume and the reservoir volume during a switch-off process and for opening the connection between the expansion volume and the reservoir volume a switch-on process. This ensures the effect of the differential piston described above.
  • the piston of the piston-cylinder arrangement containing the second compression volume is rigidly connected to the movable contact piece.
  • This piston and the piston of the piston-cylinder arrangement containing the second compression volume advantageously show movements which are rectified and possibly also of the same size.
  • the piston of the piston-cylinder arrangement containing the second compression volume is also advantageously rigidly connected to the movable contact piece.
  • the heating volume is identical to the first compression volume.
  • a buffer switch is essentially realized.
  • a reheating valve is arranged between the heating volume and the first compression volume for separating the first compression volume from the heating volume in the event that there is a pressure PH in the heating volume which is greater than a pressure pi in the first compression volume, and for connecting the heating volume to the first compression volume if there is a pressure PH in the heating volume which is less than a pressure pi in the first compression volume.
  • An auto-blow switch is thereby essentially realized.
  • This advantageously has the pressure control valve mentioned above.
  • An auto blow switch can be switched with low drive energy, so it only requires a small drive.
  • a high-performance switch according to the invention contains an arcing chamber according to the invention and has the corresponding advantages.
  • a high-performance switch can be gas-insulated (arranged in an extinguishing gas-filled earthed chamber) or can also be designed as an outdoor switch (with a shield on the extinguishing chamber housing). If the high-performance switch is gas-insulated, a quenching chamber housing can optionally be dispensed with, the reservoir volume of the quenching chamber then being identical to a reservoir volume of the gas-insulated high-performance switch.
  • An arcing chamber according to the invention can of course also be used in combination with other interruption units or switches, for example with a vacuum switch, in a high-performance switch.
  • FIG. 1 shows a sectional area through a high-performance switch according to the invention as a buffer switch, open at the top, closed in the bottom;
  • FIG. 2 shows a sectional area through a high-performance switch according to the invention as an auto-blow switch, open at the top and closed at the bottom;
  • Fig. 1 shows schematically a partial section through a quenching chamber according to the invention, which is advantageously used in a buffer switch.
  • the upper half, marked 0 shows the open state
  • the lower half, marked C the closed switching state.
  • the quenching chamber is essentially rotationally symmetrical and has an axis A.
  • the quenching chamber contains an extinguishing gas, for example SF ⁇ or possibly also N 2 , advantageously under pressure, and is enclosed here by an electrically insulating quenching chamber housing 16 which contains a reservoir volume 17.
  • the housing 16 is typically closed at both ends by metal connecting flanges, not shown.
  • the housing 1 6 may be dispensed with; in this case the metallic encapsulation of the high-voltage system could limit the arcing chamber.
  • a nominal current path that is usually present is not shown for the sake of clarity.
  • the arcing chamber has an electrically conductive first fixed contact 1 and an electrically conductive movable contact 2.
  • the contact 1 In the closed state, the movable contact 2 rests resiliently on the fixed contact 1 with its end facing the fixed contact 1.
  • the movable contact 2 has a cylindrically shaped metallic shaft which extends in the opposite direction to the fixed contact 1 and forms an outflow pipe 1 2 which contains a cylindrically shaped outflow channel 1 3 on the inside.
  • the movable contact 2 makes a movement along the axis A during a switching movement. It is driven by a drive, not shown.
  • the movement of the nozzles 1 1 a, 1 1 b and the movement of a piston K2 are also coupled to the movement of the second contact piece 2.
  • the coupling between movable contact 2 and insulating nozzle 1 l a is illustrated by a line of action 23.
  • these couplings have a mechanical rigid coupling.
  • transmissions can also be interposed, for example.
  • pressure-tight bearings are to be provided, which can be carried out in one of the known ways and are illustrated by black circles.
  • the first compression volume 7 has an annular cylinder base B1, cylinder walls ZI and an annular piston Kl.
  • the latter is formed in the illustrated embodiment by the insulating nozzle 1 1 a.
  • an embodiment of insulating nozzle 1 l a and piston K 1 as separate, preferably adjacent parts is preferred.
  • a second piston-cylinder arrangement consisting of the second, annular piston K2, a second, annular cylinder bottom B2 and cylinder walls Z2, contains a second compression volume 8 Compression volume reduced.
  • the first and second compression volumes 1, 2 are connected to one another via an inflow channel 9. Extinguishing gas, which is pressed into the inflow channel 9 when the compression volume 8 is reduced, is previously deflected at the bottom B2.
  • the excess pressure resulting from the compression of the extinguishing gas present in the two compression volumes 1, 2 is reduced by the heating duct 6 and in this way serves to blow the arc 4, which is thereby extinguished.
  • the amount of gas available for arc quenching is thus determined by the amount of gas that is made available by the two compression volumes 7, 8 together.
  • the two compression volumes 7, 8 are arranged one behind the other with respect to the axis A, as a result of which a slim design of the arcing chamber is achieved.
  • the length of an arcing chamber is generally a maximum provided for the arcing chamber
  • the movement of the second piston K2 also changes a third volume, which is referred to as the expansion volume 1 0.
  • the expansion volume 10 is arranged in a third piston-cylinder arrangement, which is formed by a third piston K3, which is identical here to the second piston K2, and a third cylinder base B3, which is essentially formed by the cylinder base B1, and of third cylinder walls Z3, which are essentially identical to the cylinder walls Z2.
  • a change in volume of the second compression volume 8 results in an opposite change in volume of the expansion volume 1 0, which also in the case shown Amount is the same.
  • the expansion volume 10 shares with the second compression volume 8 essentially the same physical space.
  • the expansion volume 1 0 is opened towards the outflow channel 1 3 by means of a connecting opening 1 4. It is formed, for example, by one or more openings in the outflow pipe.
  • gas in particular contaminated gas, can flow through the connection opening 14 from the outflow channel 13 into the expansion volume 10. This not only ensures that there is no negative pressure in the expansion volume 1 0, which would put an additional load on the drive, but drive support can even be achieved by the heated gas flowing out of the extinguishing zone 3 and flowing into the expansion volume 10.
  • an improved blowing is achieved because gas is sucked out of the quenching zone 3 through the connecting opening 1, whereby contaminated gas is sucked out of the quenching zone 3 and more gas for blowing the arc 4 can flow through the heating channel 6 into the quenching zone.
  • reservoir volume 1 7 are provided at the end of the outflow channel 1 3 facing away from the first contact piece 1, 2 openings in the outflow pipe 1, reservoir volume 1 7 are provided. If the connection opening 1 4 is present, these can be dimensioned smaller or possibly omitted entirely, as a result of which improved drive support can be achieved.
  • an outflow opening 15 is also provided, which connects the expansion volume 10 to the reservoir volume 17 and which is channel-shaped as an outlet channel 15. There are typically several such channels crossing the inflow channel 9 and forming the outlet channel 15. During a switch-off process, contaminated gas can be expelled from the expansion volume 10 into the reservoir volume 17 through the outlet channel 15.
  • the expansion volume 1 0 serves as an exhaust volume and the outflow opening 1 5 serves as an exhaust.
  • the outflow opening 15 can be provided in addition or as an alternative to the connecting opening 14.
  • the gas flows into the expansion volume 10 and out of it can be regulated, so that for example more or less
  • the contact piece 2 and the three pistons K1, K2, K3 move in such a way that the compression volumes 7, 8 increase and the expansion volume 1 0 decrease.
  • Clean quenching gas can advantageously be sucked into the compression volumes 7, 8 through an inlet valve 22, so that clean gas for the arc blowing is available for a later switch-off process.
  • the contaminated gas is expelled from the expansion volume 1 0 through the outlet channel 15 into the reservoir volume 17 and / or through the connecting opening 14 into the outflow channel 13.
  • the outflow opening 1 5 and the connecting opening 1 4 are advantageously dimensioned such that the major part of the gas expelled from the expansion volume 10 reaches the reservoir volume 1 7.
  • the inlet valve 22 is advantageously not arranged in the vicinity of the outflow opening 15, as is also shown in FIG. 1. This prevents the intake valve 22 from sucking in contaminated gas.
  • Fig. 1 the essential gas flows are indicated by dashed lines. Above, in the open state 0, for switching on, below, in the closed state C, for switching off.
  • An optional pressure control valve 20 is also provided in the quenching chamber in FIG. 1 and is arranged in the inflow channel 9. Without the pressure valve 20, the inflow channel 9 is continuously open as a connection between the two compression volumes 7 and 8.
  • the pressure control valve 20 opens the inflow channel 9 only when a pressure p 2 prevailing in the second compression volume 8 is greater than at least one predeterminable differential pressure ⁇ p> 0 than one in the first
  • Compression volume 7 prevailing pressure pi (where here pi is PH, the pressure in the heating volume 5, which is equal to the first compression volume 7 in the buffer switch shown in FIG. 1).
  • pi is PH, the pressure in the heating volume 5, which is equal to the first compression volume 7 in the buffer switch shown in FIG. 1).
  • a spring is shown between the valve disc and the stop of the schematically illustrated pressure control valve 20, which strives to close the valve 20.
  • FIG. 2 shows a further advantageous embodiment of the invention. It is an arcing chamber for an auto blow switch.
  • This quenching chamber largely corresponds to the quenching chamber shown in FIG. 1 and is described on the basis thereof.
  • the representations of the quenching chambers in Figs. 1 and 2 correspond to each other.
  • the quenching chamber in FIG. 2 has a reheating valve 21.
  • the reheat valve 21 when closed, separates the first one Compression volume 7 of the reheating volume 5. It is designed so that it opens when the pressure pi in the first compression volume 7 is greater than the pressure PH in the heating volume 5. This avoids the occurrence of higher pressures, such as those caused by the ignition of the arc 4, on the piston Kl. And the quenching chamber can be operated with a smaller drive, i.e. with a lower drive energy.
  • valve 1 8 which is advantageously designed as a sleeve valve 1 8, is provided at the connection opening 1 4 and an outlet valve 1 9 is provided at the outflow opening 1 5.
  • These valves can be used individually or advantageously together.
  • the respective valve 1, 8.1, 9 can also be used if only one of the two openings 14, 15 is provided.
  • the valve or valves 1, 8.1, 9 can also be used advantageously in a buffer switch (see FIG. 1).
  • Valve 1 8 opens the connection between outflow duct 1 3 and expansion volume 1 0 during a switch-off process.
  • the drive can be supported against the piston K3 by the resulting gas flow of contaminated gas.
  • the valve 1 8 closes this connection, so that the contaminated extinguishing gas present in the expansion volume 1 0 is not ejected into the outflow channel 1 3 but only into the reservoir volume 1 7 during the reduction in the expansion volume 1 0 due to the movement of the piston K3 , According to passes via the bleed passage 3 1 less or no polluted gas properties are achieved in the quenching zone 3 so that improved switching ⁇ .
  • the valve 1 8 is advantageously designed as a sleeve valve 1 8, which consists essentially of a sleeve 1 8, which is substantially tubular is formed and is slidably mounted on the outflow pipe 1 2.
  • the sleeve 1 8 In the case of a vertically mounted quenching chamber (vertically with the gravitationally downward movement of the movable contact piece 2 when switching off), the sleeve 1 8 is in contact with the piston K3 or a stop (not shown) and closes the connection opening 1 4. Only during a switching off process the connection opening 1 4 released because the sleeve 1 8 remains at the top due to its inertia, while the outflow pipe 1 2 moves down.
  • the sleeve 1 8 then moves down (due to gravity) and closes the connecting opening 1 4.
  • the corresponding movement of the sleeve can be realized, for example, by a spring which tends to push the sleeve in to move the position in which the connection opening 1 4 is closed.
  • Sleeve valves can also be used in other switches and / or arcing chambers, in which it is necessary to open and close one or more openings in a cylindrical part of the switch.
  • the sleeve can be arranged on the outside of the cylindrical part (such as, for example, on the outflow pipe 12) or also therein.
  • a sleeve valve is not limited to circular cross sections, but can also be used if the part of the switch which has the openings to be closed has an oval or square cross section or has another essentially prismatic shape.
  • the valve 1 8 can also be designed as a rattling valve.
  • the outlet valve 1 9 serves to close the outflow opening 1 5 during a switch-off process and to open it during a switch-on process. It can work depending on the stroke or pressure, so that an optimal exhaust pressure can be set. It is also possible to design the outlet valve 1 9 as a sleeve, similar to the valve 1 8. During a switch-off process, the outlet valve 19 prevents the gas stream entering the expansion volume 10 through the connection opening 14 from escaping into the reservoir volume 17. In this way, maximum drive support can be achieved. During a switch-on process, contaminated gas can flow through the
  • Outflow opening 1 5 are discharged into the reservoir volume 1 7, so that the extinguishing zone 3 is not contaminated by the contaminated gas.
  • the outlet valve 1 9 advantageously opens the outflow opening 1 5 only in the open state O, that is to say when the drive no longer drives the movable contact piece 2.
  • No pressure control valve 20 is provided in the arcing chamber shown in FIG. 2, as in FIG. 1.
  • the use of such a valve 20 is also possible in an auto-blow switch.
  • a particularly simple quenching chamber is obtained when there is no connection opening 1 4 and thus also no valve 1 8, and when an outlet valve 1 9 is also dispensed with, so that the outflow opening 1 5 is always open.
  • the piston K2, K3 then does not act as a differential piston, and the drive does not receive any support.
  • the quenching chambers shown include a first piston K1 of a first piston-cylinder arrangement, which contains the first compression volume 7, and a second piston K2 of a second piston-cylinder arrangement, which contains the second compression volume 8.
  • the two compression volumes 7, 8 are arranged and connected to one another in such a way that a change in one of the two compression volumes 7, 8 causes an equally large change in the total volume formed by the compression volumes 7, 8. This can, as shown, can be achieved without an opposite movement of the two pistons K1, K2 being necessary.
  • the inner cylinder wall of the essentially hollow cylindrical inflow channel 9 is essentially formed by the outer wall of the hollow cylinder Z2. It is also possible to design the quenching chamber in such a way that the inner cylinder wall of the inflow channel 9 is formed by the outflow pipe 12 and the outer cylinder wall of the inflow channel 9 is formed by the outer wall of the hollow cylinder Z2.
  • the outflow opening 15 could then be designed as a simple opening in the outer wall of the hollow cylinder Z2 instead of as a channel. Such an embodiment is advantageous, for example if no connection opening 14 is provided.
  • connection opening between expansion volume and outflow channel

Landscapes

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

Abstract

L'invention concerne une chambre d'extinction remplie d'un gaz d'extinction pour un disjoncteur haute puissance, cette chambre comportant un premier élément de contact (1) et un deuxième élément de contact (2) dont un au moins est mobile. Lors d'une mise hors circuit, un arc électrique (4) à éteindre se forme dans la zone d'extinction (3) entre les deux éléments de contact (1,2). Un volume de chauffage (5) reçoit le gaz d'extinction chauffé par l'arc électrique (4), ce gaz servant à éteindre l'arc électrique (4). Un premier volume de compression (7) est disposé de manière à diminuer lors d'une mise hors circuit, si bien que le gaz d'extinction passe du premier volume de compression (7) à la zone d'extinction (3). La chambre de l'invention comporte un deuxième volume de compression (8) et un volume d'expansion (10) séparé du premier (7) et du deuxième (8) volume de compression. Ce volume d'expansion (10) est disposé de telle sorte que, lors d'une expansion du volume global du premier (7) et du deuxième (8) volume de compression, son volume diminue, son volume augmentant lors de la diminution du volume global du premier (7) et du deuxième (8) volume de compression. Le premier (7) et le deuxième (8) volume de compression sont reliés par un conduit d'alimentation (9) allongé s'étendant parallèlement à un axe (A) de la chambre d'extinction. Le volume d'expansion (10) est relié à un conduit d'évacuation (13) et/ou à un réservoir (17). Cette invention permet d'améliorer le soufflage d'un arc électrique, notamment au moyen d'un gaz d'extinction propre.
PCT/CH2004/000740 2003-12-22 2004-12-16 Chambre d'extinction d'arc et disjoncteur haute puissance a fort soufflage d'arc WO2005062330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03405922A EP1548780B1 (fr) 2003-12-22 2003-12-22 Chambre d'extinction et disjoncteur de forte puissance avec un soufflage important d'arc électrique
EP03405922.0 2003-12-22

Publications (1)

Publication Number Publication Date
WO2005062330A1 true WO2005062330A1 (fr) 2005-07-07

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Application Number Title Priority Date Filing Date
PCT/CH2004/000740 WO2005062330A1 (fr) 2003-12-22 2004-12-16 Chambre d'extinction d'arc et disjoncteur haute puissance a fort soufflage d'arc

Country Status (4)

Country Link
EP (1) EP1548780B1 (fr)
AT (1) ATE388479T1 (fr)
DE (1) DE50309339D1 (fr)
WO (1) WO2005062330A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2249364A1 (fr) 2009-05-07 2010-11-10 ABB Research Ltd. Procédé de production de gaz de coupage comprimé mécaniquement dans un disjoncteur haute tension isolé du gaz et dispositifs d'exécution du procédé
CN109935495A (zh) * 2018-11-09 2019-06-25 许继（厦门）智能电力设备股份有限公司 一种灭弧室绝缘辅助结构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2892851B1 (fr) * 2005-11-03 2013-12-06 Areva T & D Sa Chambre de coupure de courant a double chambre de compression
DE102010020979A1 (de) * 2010-05-12 2011-11-17 Siemens Aktiengesellschaft Druckgas-Leistungsschalter
FR2962253B1 (fr) * 2010-07-01 2012-08-31 Areva T & D Sas Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de man?uvre et dimensions reduites
DE102018211621A1 (de) * 2018-07-12 2020-01-16 Siemens Aktiengesellschaft Gasisolierter Schalter
JP2023552402A (ja) * 2020-12-04 2023-12-15 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト 電気スイッチング装置
EP4125108B1 (fr) * 2021-07-26 2024-01-31 Hitachi Energy Ltd Disjoncteur haute ou moyenne tension isolé au gaz

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EP2249364A1 (fr) 2009-05-07 2010-11-10 ABB Research Ltd. Procédé de production de gaz de coupage comprimé mécaniquement dans un disjoncteur haute tension isolé du gaz et dispositifs d'exécution du procédé
CN109935495A (zh) * 2018-11-09 2019-06-25 许继（厦门）智能电力设备股份有限公司 一种灭弧室绝缘辅助结构
CN109935495B (zh) * 2018-11-09 2024-04-30 许继（厦门）智能电力设备股份有限公司 一种灭弧室绝缘辅助结构

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EP1548780B1 (fr) 2008-03-05
EP1548780A1 (fr) 2005-06-29
DE50309339D1 (de) 2008-04-17

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