EP1079404A2 - Disjoncteur à gaz comprimé - Google Patents

Disjoncteur à gaz comprimé Download PDF

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Publication number
EP1079404A2
EP1079404A2 EP20000810662 EP00810662A EP1079404A2 EP 1079404 A2 EP1079404 A2 EP 1079404A2 EP 20000810662 EP20000810662 EP 20000810662 EP 00810662 A EP00810662 A EP 00810662A EP 1079404 A2 EP1079404 A2 EP 1079404A2
Authority
EP
European Patent Office
Prior art keywords
piston
gas
volume
opening
gas channel
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Withdrawn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
EP20000810662
Other languages
German (de)
English (en)
Inventor
Max Dr. Claessens
Kurt Dr. Kaltenegger
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.)
ABB Research Ltd Switzerland
Original Assignee
ABB Research Ltd 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 ABB Research Ltd Switzerland filed Critical ABB Research Ltd Switzerland
Publication of EP1079404A2 publication Critical patent/EP1079404A2/fr
Withdrawn legal-status Critical Current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
    • H01H33/901—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
    • H01H2033/906—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 with pressure limitation in the compression volume, e.g. by valves or bleeder openings

Definitions

  • the invention relates to a gas pressure switch according to the preamble of claim 1.
  • Such switches are used for short-circuit currents in high-voltage networks to interrupt. You have a deletion device for the arc that arises when switching off.
  • EP 146 671 describes a switch in which additionally the pressure of the Hot gas is used to generate the arc Increase the pressure of the extinguishing gas. This is in the piston chamber a second opening is provided, through which the hot Gas can enter the pump room. This switch needs however, considerable drive energy to move of the piston, as this counteracts the full pressure must be driven.
  • Both piston volumes are therefore according to the invention over the same gas channel with the arc zone connected. Hot gas is produced under high pressure standing arc zone directly behind the pistons, where there is a pressure supporting the piston movement is built up.
  • An auxiliary piston can ensure that the hot gas is not in the switching path flows back.
  • the piston should ideally be the second Opening of the piston chamber, so that there is a Connection between the gas channel and the second piston volume forms. Because in the second volume a smaller one Pressure than prevails in the first volume is now becoming a possibility hot gas from the arc zone to the second Volume entering and not dealing with the gas in the first Mix volume. This keeps the extinguishing gas cold.
  • a check valve can be provided in the second opening, or an auxiliary piston can be arranged in the gas channel e.g. is rigidly connected to the piston and towards the end of the opening movement of the movable contact closes the second opening.
  • a first embodiment of the invention is in 1-5. In all longitudinal sections one section through one half of the device shown, with all parts essentially are arranged rotationally symmetrical to axis 1.
  • the live parts of the switch are contacts 2 and 3, with the leads to contact 2 are not visible in the figures.
  • the contact 2 as shown in Figs. 1-3, together with the nozzle and the piston volume moved to the left. This creates an arc 4 in one Arc Zone 5.
  • the task of the following extinguishing device described is the Blow out arc 4 and the hot gas from the Remove arc zone 5.
  • the extinguishing device comprises an axial movable piston chamber, which is from a stationary piston 6 is divided into two piston volumes 7, 8.
  • the piston 6 is via a piston rod 6a with the switch housing 9 connected.
  • the first piston volume 7 is at its end connected to a gas channel 11 via a first opening 10.
  • the second one connects Opening 12 either the first or the second volume 7 or 8 with the gas channel 11.
  • the second piston volume 8 is also about Exhaust openings 13 which e.g. as holes as in figure 4 are shown, with an exhaust area of the switch connected.
  • An auxiliary piston 15 runs in the gas channel 11 the piston 6 is rigidly connected.
  • the piston 6 with the auxiliary piston 15 and the Contact 3 are rigidly connected to the switch housing 9. With a switch-off movement, only the move Contact 2 with the piston volume and the nozzle to the left.
  • breaking current If the breaking current is small, it increases The pressure in the first piston volume barely increased due to the gas on the one hand as an extinguishing flow through the mouth 16, on the other hand can escape through the opening 12.
  • the arc zone 5 such a high pressure built up that hot Gas flows through the mouth 16 in the direction of the piston chamber 8. Since the gas is already pre-compressed in the first piston volume 7 hot gas is mainly in the second Incoming piston volume 8, which increases the pressure there becomes. Because during this phase from the first piston volume 7 no gas can escape, the pressure rises there also on. However, the drive is increasing due to the Relieved pressure in the second piston volume. The Auxiliary piston 15 must at the same time against the full Start gas pressure, but the force required for this is due to the small area of the auxiliary piston 15 small.
  • the auxiliary piston 15 closes the opening 12. This prevents hot gas from entering the arc zone 5 can flow back and there to dielectric Leads to problems.
  • the sink If the current goes to zero, the sinks Temperature in the arcing zone 5. Now at the latest the cold extinguishing gas from the first piston volume 7 through flow out the mouth 16. The arc 4 is extinguished and the gas in the arc zone 5 by cold gas replaced.
  • FIG. 6 shows a second embodiment of the Pressure gas switch shown.
  • the auxiliary piston replaced by a check valve 17, which causes a backflow of the hot gas in the field-loaded switching path prevented after the zero current crossing. Otherwise this switch version works the same as that 1 - 5.
  • FIG. 7-9 is another embodiment of the gas pressure switch, in which the flow of the hot gas in a differentiated way through the Auxiliary piston 15 is controlled.
  • the second is Opening 12 arranged and designed so that at each piston position in the second piston volume 8 flows.
  • the gas channel 11 has a non-constant Cross section and is broadened in a central region 18 executed.
  • the operation of the third embodiment is as follows: At the beginning of the switch-off movement, until briefly after contact separation, gas from first piston volume 7 rearranged in the second piston volume 8, whereby the drive is relieved (Fig. 7). Hot gas from the arc zone 5 is through the flow from the first to the second Entrained volume so that it is drained and does not hinder the later deletion process. Once the Auxiliary piston 15 the narrow area 11a of the gas channel 11 closes, this flows out of the first piston volume 7 escaping gas completely into the arc zone 5, whereby a strong quenching flow is generated (Fig. 8).
  • the "Permeability" of the gas channel 11 between the two Openings 10 and 12 depending on the switch position can be continuously adapted to the respective requirements by the cross-sectional profile of the gas channel 11 accordingly is chosen. This is how the design shown here tapers the gas channel 11 e.g. in an area 19 again, so that at the end of the switch-off movement of the auxiliary piston 15 is closed again.
  • Figs. 10 and 11 In another version of the switch, which is shown in Figs. 10 and 11 is the mouth 16 of the gas channel 11 on the side of the second piston volume 8 arranged.
  • the gas channel 11 between the two Openings 10 and 12 are always open.
  • check valves 20a, 20b are arranged in both piston volumes 7, 8 check valves 20a, 20b are arranged.
  • the valve 20a ensures the inflow of gas when opening the contacts and the valve 20b when the Contacts.
  • This version has the advantage that the hot gas, which with medium arc energy only a very small impulse enters the mouth 16, does not accumulate in the area of the second opening 12. Much more it is due to the gas flow that occurs during the shutdown movement between the first and second piston volumes 7 or 8 forms with the cold gas in the second Piston volume 8 mixed.
  • the heating output increases the pressure in the second piston volume 8 strong, which directly supports the drive.
  • the pressure in the first piston volume 7 and in the arc zone 5 decreases again, the gas from the second piston volume 8 also flow into the arc zone 5 and supports the deletion process.
  • Fig. 12 shows a variant for execution 10 and 11, in which in the second opening 12 a check valve 21 is provided, which prevents that gas from the second piston volume 8 in the Heating duct flows. This prevents the Arc heated gas at the end of the extinguishing phase from second volume 8 flows back into the arc zone 5. To discharge the heated gas is one in the second Piston volume 8 opening exhaust duct 25 is provided.
  • FIG. 13 shows a further embodiment of the Gas pressure switch. It in turn has a contact 2 and a contact 3.
  • the axially movable piston chamber becomes from the stationary piston 6 into the two piston volumes 7, 8 is divided.
  • the piston 6 is via a piston rod 6a connected to the switch housing 9.
  • the first Piston volume 7 is at its end with gas channel 11 connected.
  • the second piston volume 8 is about one Check valve 20a vented, which already at low pressure difference a gas entry into the second Piston volume 8 allows.
  • Two valves 22, 23 are arranged in the piston 6.
  • the first valve 22 is biased by a spring 24 and allows gas passage from the first piston volume 7 in the second piston volume 8, but only if the pressure difference exceeds 1 to 2 bar. At the break the valve 22 should not yet have small currents to open.
  • the second valve 23 is a check valve, a gas passage even at a much lower overpressure from the second piston volume 8 into the first piston volume 7 allowed.

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  • Circuit Breakers (AREA)
EP20000810662 1999-08-23 2000-07-26 Disjoncteur à gaz comprimé Withdrawn EP1079404A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939940 1999-08-23
DE1999139940 DE19939940A1 (de) 1999-08-23 1999-08-23 Druckgasschalter

Publications (1)

Publication Number Publication Date
EP1079404A2 true EP1079404A2 (fr) 2001-02-28

Family

ID=7919321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000810662 Withdrawn EP1079404A2 (fr) 1999-08-23 2000-07-26 Disjoncteur à gaz comprimé

Country Status (4)

Country Link
EP (1) EP1079404A2 (fr)
JP (1) JP2001076596A (fr)
CN (1) CN1285605A (fr)
DE (1) DE19939940A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051320A1 (fr) * 2005-11-03 2007-05-10 Abb Research Ltd Commutateur a autoextinction par soufflage avec pre-compression du gaz
EP1863054A1 (fr) * 2006-05-29 2007-12-05 ABB Technology AG Interrupteur à piston de soufflage avec un clapet de surpression
WO2012123032A1 (fr) * 2011-03-17 2012-09-20 Abb Technology Ag Disjoncteur haute tension à isolation dans le gaz
WO2020011695A1 (fr) * 2018-07-12 2020-01-16 Siemens Aktiengesellschaft Commutateur à isolation gazeuse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5683986B2 (ja) * 2011-02-07 2015-03-11 株式会社東芝 ガス遮断器
US9507038B2 (en) * 2014-06-30 2016-11-29 Sercel Pneumatic control for marine seismic source and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29618708U1 (de) * 1996-10-18 1998-02-19 Siemens AG, 80333 München Druckgasleistungsschalter
DE19745550A1 (de) * 1997-10-10 1999-04-15 Siemens Ag Druckgasleistungsschalter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051320A1 (fr) * 2005-11-03 2007-05-10 Abb Research Ltd Commutateur a autoextinction par soufflage avec pre-compression du gaz
EP1863054A1 (fr) * 2006-05-29 2007-12-05 ABB Technology AG Interrupteur à piston de soufflage avec un clapet de surpression
US7820933B2 (en) 2006-05-29 2010-10-26 Abb Technology Ag Puffer circuit breaker with an overpressure valve
WO2012123032A1 (fr) * 2011-03-17 2012-09-20 Abb Technology Ag Disjoncteur haute tension à isolation dans le gaz
US8822868B2 (en) 2011-03-17 2014-09-02 Abb Technology Ag Gas-insulated high-voltage power circuit breaker
WO2020011695A1 (fr) * 2018-07-12 2020-01-16 Siemens Aktiengesellschaft Commutateur à isolation gazeuse
US11676785B2 (en) 2018-07-12 2023-06-13 Siemens Energy Global GmbH & Co. KG Gas-insulated switch

Also Published As

Publication number Publication date
JP2001076596A (ja) 2001-03-23
DE19939940A1 (de) 2001-03-01
CN1285605A (zh) 2001-02-28

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