EP0664551A2 - Disjoncteur électrique pour H.T. avec chambre de réchauffement et un dispositif de compression - Google Patents

Disjoncteur électrique pour H.T. avec chambre de réchauffement et un dispositif de compression Download PDF

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Publication number
EP0664551A2
EP0664551A2 EP94250300A EP94250300A EP0664551A2 EP 0664551 A2 EP0664551 A2 EP 0664551A2 EP 94250300 A EP94250300 A EP 94250300A EP 94250300 A EP94250300 A EP 94250300A EP 0664551 A2 EP0664551 A2 EP 0664551A2
Authority
EP
European Patent Office
Prior art keywords
compression
circuit breaker
voltage circuit
electrical high
heating chamber
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.)
Withdrawn
Application number
EP94250300A
Other languages
German (de)
English (en)
Other versions
EP0664551A3 (fr
Inventor
Dipl.-Ing. Lehmann Volker
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
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0664551A2 publication Critical patent/EP0664551A2/fr
Publication of EP0664551A3 publication Critical patent/EP0664551A3/xx
Withdrawn legal-status Critical Current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
    • H01H33/91—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
    • 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
    • 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

Definitions

  • the invention relates to an electrical high-voltage circuit breaker with two mutually coaxially opposed switching contact pieces designed to discharge extinguishing gas and a bridging contact piece bridging them in the switched-on state and connected to a drive device, as well as with at least one heating space surrounding the switching contact pieces and with a first one the side of the boiler room facing away from the drive device, arranged coaxially to the switching contact pieces, for the mechanical compression of extinguishing gas.
  • Such a high-voltage circuit breaker is known for example from DE-OS 41 03 119.
  • the action of the arc which burns between the switching contact pieces, heats extinguishing gas in the heating space and thus increases the pressure of the extinguishing gas, so that the extinguishing gas under high pressure flows back into the arc space to extinguish the arc.
  • extinguishing gas is mechanically compressed in a compression device and, if necessary, passed through a duct into the arc chamber.
  • the present invention has for its object to further improve the arc extinguishing behavior in a high-voltage circuit breaker of the type mentioned, whereby the smallest possible space requirement of the switch is sought.
  • the object is achieved in that a second compression device is arranged on the side of the boiler room facing the drive device and that both compression devices can be driven by the drive device.
  • the first and the second compression device are arranged on both sides of the boiler room along the longitudinal axis of the switch. This enables a larger compression volume to be achieved without increasing its diameter or lengthening the stroke of the compression movement. This is particularly important because high-voltage circuit breakers are usually installed in a metal or porcelain housing of cylindrical design, which should be kept as small as possible for reasons of stability and costs. In the case of circuit breakers of this type which are to be used in encapsulated systems, care must also be taken to ensure that the field width remains as small as possible so that the space required for the entire system is as small as possible.
  • Both compression devices can advantageously be driven by means of the drive device of the switch, so that an additional design effort compared to the previously known design for driving the second compression device can be kept low.
  • An advantageous embodiment of the invention provides that the two compression devices can be operated in the same direction.
  • none of the compression devices requires a deflection of the drive movement to actuate the respective compression device.
  • a further advantageous embodiment of the invention provides that at least one of the switch contact pieces on its side facing the other switch contact piece carries an insulating material made of a material which releases extinguishing gas under the action of the arc.
  • This measure causes additional quenching gas to be released under the action of the arc, which assists in extinguishing the arc.
  • the invention can also be advantageously configured in that the boiler room is essentially limited by elements made of insulating material.
  • the inner walls of the boiler room can, for example, be lined with PTFE that releases further extinguishing gas under the action of the heated extinguishing gas.
  • a further advantageous embodiment of the invention provides that each of the compression devices is connected to the boiler room via a channel provided with a check valve.
  • the check valve prevents hot extinguishing gas from flowing from the boiler room into the compression rooms if the gas pressure in the boiler room is higher than in the compression rooms. This is the case, for example, with high currents to be switched and a correspondingly high arc power. If extinguishing gas under high pressure would flow from the boiler room into the compression rooms, the extinguishing gas pressure, which rises more sharply in the compression rooms, would brake the drive movement. This is prevented by the construction according to the invention.
  • the invention can advantageously also be designed such that one of the compression devices can be actuated with a time delay compared to the other compression device. This can be achieved, for example, by a suitable mechanical construction during the transmission of the drive to the two compression devices. The two compression devices could then feed extinguishing gas into the arc space at different times, so that the chronological sequence of the arc blowing can thereby be controlled.
  • a further advantageous embodiment of the invention provides that the compression ratios of the compression devices are selected differently.
  • one of the compression devices can deliver a long-lasting extinguishing gas flow at low pressure, while the other compression device delivers a short, powerful gas surge.
  • the invention can also be advantageously configured in that the first compression device has a drivable outer cylinder with a cylinder bottom and that the outer cylinder encloses the heating space in addition to the first compression space.
  • the drivable outer cylinder represents a structurally simple and particularly space-saving possibility of transferring the drive force past the boiler room to its side facing away from the drive device.
  • the second compression space can also be enclosed by the drivable outer cylinder. This can thus also form a protective cover for the interrupter unit, so that hot, ionized extinguishing gas does not easily reach the inner wall of the metal or porcelain housing surrounding the interrupter unit. This prevents undesirable precipitation on the inner wall of the housing.
  • FIG. 1 shows schematically in a longitudinal section in the upper part a circuit breaker according to the invention in the open position, in the lower half section a corresponding switch in the closed position.
  • the outer encapsulation of the circuit breaker is not shown in the figure.
  • the circuit breaker has two fixed switching contact pieces 1, 2, which are coaxially opposite one another at a fixed distance.
  • the switching contact piece 2 carries an insulating body 3 made of polytetrafluoroethylene, which protrudes into the arc chamber 4.
  • the switch has a bridging contact piece 5, which contains an outer support tube 6 and contact fingers 7 held therein.
  • the arc chamber 4 is surrounded by a fixed heating chamber 8, which is formed by insulating parts 9, 10. These are attached directly or indirectly to the switch contact pieces 1, 2. Extinguishing gas is heated in the heating chamber 8 by the action of the arc in the arc chamber 4, which then enters the heating chamber 8 through the annular gap 11, increases the gas pressure there and flows back into the arc chamber 4 during the zero current passage, in order to contribute to extinguishing the arc there.
  • the heating chamber 8 is enclosed by a drivable outer cylinder 12 of a first compression device 12, 13.
  • the first compression device 12, 13 essentially consists of the outer cylinder 12 and a fixed compression piston 13.
  • the outer cylinder 12 is connected to the switch drive, which is located in the figure to the right of the interrupter unit but is not shown, by means of a switch rod 28 and is simultaneously connected to the bridging contact piece 5 emotional.
  • the compression piston 13 has a check valve 14 through which compressed extinguishing gas can flow from the compression space 15 into the heating space 8 and from there to the arc space 4.
  • the check valve 14 prevents 8 extinguishing gas from flowing into the compression chamber 15 at high extinguishing gas pressure in the heating chamber and counteracting the driving forces there.
  • a compression device 16, 17 is also provided, which consists of a stationary compression cylinder 16 and a drivable compression piston 17 connected to the bridging contact piece 5.
  • the compression piston decreases during the switch-off movement 17 the volume of the compression space 18, so that compressed quenching gas can flow through the opening 19 via an axial channel 20 through the check valve 21 into the heating space 8, as long as the quenching gas pressure is not higher there than in the compression space 18th
  • the compression piston 17 is sealed off from the switching contact piece 2 and the compression cylinder 16 by means of sliding seals 22, 23.
  • the outer cylinder 12 is also sealed off from the compression piston 13 by means of the seal 24.
  • a pressure relief valve 26 for relieving the compression space 15 when the extinguishing gas pressures are too high and a ventilation valve 27 are provided in the cylinder base 25.

Landscapes

  • Circuit Breakers (AREA)
EP94250300A 1994-01-21 1994-12-21 Disjoncteur électrique pour H.T. avec chambre de réchauffement et un dispositif de compression Withdrawn EP0664551A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402121 1994-01-21
DE19944402121 DE4402121A1 (de) 1994-01-21 1994-01-21 Elektrischer Hochspannungs-Leistungsschalter mit einem Heizraum und einer Kompressionsvorrichtung

Publications (2)

Publication Number Publication Date
EP0664551A2 true EP0664551A2 (fr) 1995-07-26
EP0664551A3 EP0664551A3 (fr) 1995-08-30

Family

ID=6508649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250300A Withdrawn EP0664551A2 (fr) 1994-01-21 1994-12-21 Disjoncteur électrique pour H.T. avec chambre de réchauffement et un dispositif de compression

Country Status (2)

Country Link
EP (1) EP0664551A2 (fr)
DE (1) DE4402121A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836209A2 (fr) * 1996-10-09 1998-04-15 Asea Brown Boveri AG Disjoncteur
WO2011018426A1 (fr) * 2009-08-14 2011-02-17 Areva T&D Sas Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manœuvre reduite
EP3032561A1 (fr) * 2014-12-08 2016-06-15 Siemens Aktiengesellschaft Arrangement d'interrupteur électrique
CN109346370A (zh) * 2018-11-01 2019-02-15 沈阳工业大学 一种活塞助气双能式高压sf6断路器灭弧室

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745550A1 (de) * 1997-10-10 1999-04-15 Siemens Ag Druckgasleistungsschalter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524886A (de) * 1970-12-01 1972-06-30 Bbc Brown Boveri & Cie Elektrischer Kompressionsschalter
FR2352386A1 (fr) * 1975-12-29 1977-12-16 Merlin Gerin Disjoncteur electrique a dispositif d'autosoufflage muni d'espaces de compression et d'aspiration de gaz isolant
EP0019806A1 (fr) * 1979-05-25 1980-12-10 Mitsubishi Denki Kabushiki Kaisha Disjoncteur de puissance avec des moyens d'extinction des arcs
DE3124075A1 (de) * 1981-03-30 1982-09-16 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
JPH03246841A (ja) * 1990-02-26 1991-11-05 Toshiba Corp パッファ形ガス遮断器
WO1992014255A1 (fr) * 1991-01-31 1992-08-20 Siemens Aktiengesellschaft Commutateur a gas comprime

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524886A (de) * 1970-12-01 1972-06-30 Bbc Brown Boveri & Cie Elektrischer Kompressionsschalter
FR2352386A1 (fr) * 1975-12-29 1977-12-16 Merlin Gerin Disjoncteur electrique a dispositif d'autosoufflage muni d'espaces de compression et d'aspiration de gaz isolant
EP0019806A1 (fr) * 1979-05-25 1980-12-10 Mitsubishi Denki Kabushiki Kaisha Disjoncteur de puissance avec des moyens d'extinction des arcs
DE3124075A1 (de) * 1981-03-30 1982-09-16 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
JPH03246841A (ja) * 1990-02-26 1991-11-05 Toshiba Corp パッファ形ガス遮断器
WO1992014255A1 (fr) * 1991-01-31 1992-08-20 Siemens Aktiengesellschaft Commutateur a gas comprime

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016 no. 037 (E-1160) ,29.Januar 1992 & JP-A-03 246841 (TOSHIBA CORP) 5.November 1991, *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836209A2 (fr) * 1996-10-09 1998-04-15 Asea Brown Boveri AG Disjoncteur
EP0836209A3 (fr) * 1996-10-09 1999-04-07 Asea Brown Boveri AG Disjoncteur
WO2011018426A1 (fr) * 2009-08-14 2011-02-17 Areva T&D Sas Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manœuvre reduite
FR2949170A1 (fr) * 2009-08-14 2011-02-18 Areva T & D Sas Chambre de coupure pour disjoncteur a moyenne ou haute tension a energie de manœuvre reduite
EP3032561A1 (fr) * 2014-12-08 2016-06-15 Siemens Aktiengesellschaft Arrangement d'interrupteur électrique
CN109346370A (zh) * 2018-11-01 2019-02-15 沈阳工业大学 一种活塞助气双能式高压sf6断路器灭弧室

Also Published As

Publication number Publication date
DE4402121A1 (de) 1995-07-27
EP0664551A3 (fr) 1995-08-30

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