EP0177714A2 - Disjoncteur à gaz comprimé - Google Patents

Disjoncteur à gaz comprimé Download PDF

Info

Publication number
EP0177714A2
EP0177714A2 EP85110187A EP85110187A EP0177714A2 EP 0177714 A2 EP0177714 A2 EP 0177714A2 EP 85110187 A EP85110187 A EP 85110187A EP 85110187 A EP85110187 A EP 85110187A EP 0177714 A2 EP0177714 A2 EP 0177714A2
Authority
EP
European Patent Office
Prior art keywords
gas
pressure
channels
cavity
pressure accumulator
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.)
Granted
Application number
EP85110187A
Other languages
German (de)
English (en)
Other versions
EP0177714A3 (en
EP0177714B1 (fr
Inventor
Lutz Dr. Niemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0177714A2 publication Critical patent/EP0177714A2/fr
Publication of EP0177714A3 publication Critical patent/EP0177714A3/de
Application granted granted Critical
Publication of EP0177714B1 publication Critical patent/EP0177714B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor
    • 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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow

Definitions

  • the invention is based on a gas pressure switch according to the preamble of claim 1.
  • the invention relates to a prior art, as described for example in DE-PS 28 11 508.
  • the quenching gas heated by the switching arc is guided into a pressure chamber in which it is blown under high pressure after the release of an outflow opening into the expansion space.
  • a device consisting essentially of a tubular extension and interacting with the movable contact piece, which allows the extinguishing gas in the pressure chamber to escape into the expansion space with a delay. and that the outer part of the pressure chamber is also protected from excessive pressures by a valve.
  • the invention solves the problem of creating a pressure gas switch of the generic type, in which a pressure build-up that is too small for small and a pressure build-up that is too high is avoided with simple means.
  • Fig. 1 denotes an essentially hollow cylindrical housing made of insulating material.
  • This housing is in an atmosphere of insulating gas, such as sulfur hexafluoride at a few bar pressure. It contains two contact pieces 2 and 3 which are movable relative to one another along an axis.
  • the contact piece 2 is supported on a power connection 4 and contains a ring of contact fingers 5 and 6 which delimit a cavity 7 in the contact piece 2.
  • the switching piece 3 is fully cylindrical and movable along the cylinder axis. In the switched-on position of the switch, it is retracted into the cavity 7 and contacts the inner surfaces of the contact fingers 5 and 6 with its outer surface.
  • the contact fingers 6 are somewhat longer at their ends facing away from the free end of the contact piece 2 than the contact fingers 5 and thereby save in the contact piece 2 channels 8, which extend in the radial direction through an insulating nozzle 9, preferably made of polytetrafluoroethylene (PTFE), into a ring-shaped pressure accumulator 10 which coaxially surrounds the switching elements 2, 3.
  • a ring-shaped pressure accumulator 10 which coaxially surrounds the switching elements 2, 3.
  • check valves 11 At the mouths of the channels 8 in the pressure accumulator 10 there are check valves 11 which close the pressure accumulator 10 with respect to the cavity 7 when the pressure in the cavity 7 drops.
  • the pressure accumulator 10 is essentially delimited by the housing 1 and the outer lateral surface of the insulating nozzle 9 and divided by a flow labyrinth 12.
  • This can consist, for example, of radial annular deflection plates 13, which are offset from one another in the axial direction and are alternately fastened to the inner wall of the housing 1 and the outer lateral surface of the insulating nozzle 9.
  • the deflection plates 13 have free ends and thus delimit a meandering flow channel for heated extinguishing gas, which is guided from the cavity 7 via the channels 8 and an annular partial space 14 of the pressure accumulator 10 into a further annular partial space 15 of the pressure accumulator 10 during the heating process.
  • the sub-space 15 is essentially delimited by the housing 1, the insulating nozzle 9, an essentially radially extending housing extension 16 which is penetrated by the switching element 3 in an opening (not designated) in a gas-tight manner and the switching element 3.
  • the sub-space 15 is connected when switched off to an arc chamber 18 located between the free ends of the separating switching elements 2 and 3, adjoining the cavity 7 and receiving the switching arc 17, as soon as the switching piece penetrating the constriction 19 of the insulating nozzle 3 essentially in a gas-tight manner 3 has released this bottleneck.
  • annular space 20 which, when switched off, is connected to the arc chamber 18 before the partial space 15.
  • the annular space 20 is part of a connecting path from the arc chamber 18 to an expansion space 21.
  • this connecting path also contains channels 22 which run in the axial direction and which - as can be seen from FIG. 1 - cross the channels 8. From Fig. 2 it can be seen that the channels 8 and 22 are arranged in radially or axially extending material recesses of the insulating nozzle 9.
  • the channels 8 and 22 are arranged in radially or axially extending material recesses of the insulating nozzle 9.
  • seen in the circumferential direction of the insulating nozzle 9 alternate radially and axially extending material recesses on each other. This has the effect that, when the insulating gas is switched off, flows through the arc chamber 18 in a particularly uniform manner.
  • Cavity 7 and the subspace 14 of the pressure accumulator 10 are at least partially provided with a material lining 23 which, compared to the material of the contact fingers 5 and 6 of the switching element 2, has a comparatively low thermal conductivity, a low evaporation enthalpy and a low boiling point and, in the event of an arc, to form an arc-quenching Gases evaporates very easily.
  • These material linings 23 are arranged in such a way that the change in geometry caused by the occurrence of the switching arc 17 as a result of material evaporation does not have any significant influence on the flow behavior of the arc plasma from the cavity 7 into the pressure accumulator 10.
  • the material linings 23 preferably contain low-hydrogen or -free polymers based on Hcvlogen carbon with a fine-grained filler, such as carbon or metal sulfides. It is particularly recommended to produce the material linings 23 from polytetrafluoroethylene with fine-grained powder fillings of preferably 1-15 percent by weight zinc, 3-30 percent by weight molybdenum disulfide or 7-15 percent by weight graphite or coal.
  • the material lining located on the upper end face of the cavity 7 can - as can be seen in FIG. 1 - be designed as a pin 24.
  • the movable contact piece 3 is then hollow so that the pin 24 can penetrate into the contact piece 3 in the switched-on position.
  • the mode of operation of the compressed gas switch according to the invention is now as follows: when the switch 3 is switched off, it is moved downwards. As soon as the two switching pieces 2 and 3 separate, the switching arc 17 is drawn between their free ends (left half of FIG. 1). The heating power of this switching arc passes through the cavity 7, the channels 8 and through the open check valves 11 into the pressure accumulator 10 and there leads to a pressure build-up. At the same time, part of the heating power flows through the channels 22 into the expansion space 21.
  • the check valves 11 prevent a backflow of the gas located in the pressure accumulator 10 through the channels 8 when the flow drops and the associated pressure drop in the cavity 7 occurs.
  • the material lining 23 additionally ensures that as little arc heat and thus heat output as possible is lost through heat dissipation to the inside of the contact fingers 5, and that material evaporates to a considerable extent from these linings under the influence of the hot plasma and the radiation from the switching arc 17. This is particularly advantageous when switching small currents, since it also increases the pressure of the extinguishing gas in the pressure accumulator 10.
  • a further effect of the material linings 23 can also be that it, if applicable Desired commutation of the switching arc 17 is facilitated by the contact fingers 5 and 6 of the contact piece 2 on a further contact, not shown in FIG. 1.
  • Such a contact can be connected in an electrically conductive manner to the power connection 4 and can be designed, for example, as a ring arranged in the region of the constriction 19 of the insulating nozzle 9. It is advantageous here if a material lining is provided in the form of the pin 24 and the movable contact piece 3 is hollow and in the switched-on position comprises the free end of the pin 24. In such a configuration of the gas pressure switch, a steam flow is generated when switching off shortly after the two switching pieces 2 and 3 are separated by the switching arc 17, which is directed from the contact fingers 5 and 6 to the further contact located in the constriction 19 of the insulating nozzle and thereby the Commutation of the switching arc 17 much easier.
  • the gas in the subspace 15 of the pressure accumulator 10 flows under pressure through the constriction 19 of the insulating nozzle 9 and constricts the switching arc 17 at the constriction 19 (right half of FIG. 1).
  • the switching arc 17 is inevitably widened considerably by the switching element 2 behind the constriction 19. This leads to a magnetic pressure gradient in the direction of the cavity 7.
  • the switching arc 17 therefore acts like a pump which sucks cold gas from the subspace 15 and conveys it as an arc plasma into the cavity 7 and thus via the channels 8 into the pressure accumulator 10 with increased pressure .
  • the flow labyrinth 12 prevents the hot gas fed from the arc zone via the cavity 7 and the channels 8 into the partial space 14 of the pressure accumulator 10 from mixing with the cold extinguishing gas displaced into the partial space 15. It is thereby achieved that the arc in the area of the constriction 19 is only blown out of the subspace 15 with cold quenching gas.
  • the mechanism described above thus ensures that overpressure is maintained in the pressure accumulator 10 even when switching small currents, that cool and unpolluted quenching gas is supplied to the arc chamber 18, and that when large currents are switched off the pressure build-up in the pressure accumulator 10 is blown off in the arc chamber 18 excess arc gas is limited via the annular space 20 and the channels 22 in the expansion space 21.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP85110187A 1984-10-10 1985-08-14 Disjoncteur à gaz comprimé Expired - Lifetime EP0177714B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH486484 1984-10-10
CH4864/84 1984-10-10

Publications (3)

Publication Number Publication Date
EP0177714A2 true EP0177714A2 (fr) 1986-04-16
EP0177714A3 EP0177714A3 (en) 1987-11-11
EP0177714B1 EP0177714B1 (fr) 1991-10-23

Family

ID=4283889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110187A Expired - Lifetime EP0177714B1 (fr) 1984-10-10 1985-08-14 Disjoncteur à gaz comprimé

Country Status (8)

Country Link
US (1) US4684773A (fr)
EP (1) EP0177714B1 (fr)
JP (1) JPH081774B2 (fr)
CN (1) CN85107522B (fr)
DE (2) DE3440212A1 (fr)
ES (1) ES8700495A1 (fr)
IN (1) IN165779B (fr)
ZA (1) ZA856654B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646960A1 (fr) * 1989-05-11 1990-11-16 Alsthom Gec Disjoncteur a moyenne tension a autosoufflage
DE3915700A1 (de) * 1989-05-13 1990-11-22 Licentia Gmbh Selbstblasschalter mit verdampfungskuehlung
WO1993013538A1 (fr) * 1991-12-21 1993-07-08 Licentia Patent-Verwaltungs-Gmbh Coupe-circuit automatique comportant une boite d'extinction d'arc
US5925863A (en) * 1996-11-05 1999-07-20 Abb Research Ltd. Power breaker
EP0951039A1 (fr) * 1998-04-14 1999-10-20 Abb Research Ltd. Sectionneur de puissance
DE19816507A1 (de) * 1998-04-14 1999-10-21 Asea Brown Boveri Abbrandschaltanordnung
WO2000077809A1 (fr) * 1999-06-11 2000-12-21 Siemens Aktiengesellschaft Disjoncteur d'alimentation haute tension dote d'un canal d'ecoulement
EP2120244A1 (fr) * 2008-05-15 2009-11-18 ABB Technology AG Disjoncteur haute pression
CN104064418A (zh) * 2014-04-25 2014-09-24 博耳(宜兴)电力成套有限公司 一种用于小型断路器的循环气流灭弧装置
WO2021043549A1 (fr) * 2019-09-03 2021-03-11 Siemens Energy Global GmbH & Co. KG Division d'un volume de chauffage d'un circuit de puissance

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9314779U1 (de) * 1993-09-24 1993-11-25 Siemens AG, 80333 München Hochspannungs-Leistungsschalter mit einer Kühleinrichtung zur Kühlung des Löschgases
DE19816509B4 (de) * 1998-04-14 2006-08-10 Abb Schweiz Ag Abbrandschaltanordnung
US6111212A (en) * 1998-04-21 2000-08-29 Cooper Industries, Inc. Interrupt assembly for a primary circuit breaker
FR2869449B1 (fr) * 2004-04-21 2008-02-29 Areva T & D Sa Appareillage electrique de coupure en moyenne ou haute tension.
DE502004004571D1 (de) * 2004-06-07 2007-09-20 Abb Technology Ag Leistungsschalter
DE102004047260B4 (de) * 2004-09-24 2006-08-03 Siemens Ag Isolierstoffgehäuse mit Belüftungsschacht
EP1675145A1 (fr) * 2004-12-23 2006-06-28 ABB Technology AG Disjoncteur à haute puissance avec joint contre les gaz d'arc
EP1796119A1 (fr) 2005-12-06 2007-06-13 ABB Research Ltd Chambre de coupure pour interrupteur haute tension avec chambre de réchauffement pour réception de gaz d'extinction
DE102009009451A1 (de) * 2009-02-13 2010-08-19 Siemens Aktiengesellschaft Schaltgeräteanordnung mit einer Schaltstrecke
CN102714112B (zh) * 2010-02-04 2016-01-27 三菱电机株式会社 气体断路器
EP2455957B1 (fr) * 2010-11-22 2014-03-26 ABB Research Ltd. Système de disjoncteur à isolation gazeuse
CN103730275A (zh) * 2013-12-20 2014-04-16 吴江市东泰电力特种开关有限公司 旋转触头灭弧室
KR101763451B1 (ko) 2014-04-09 2017-08-01 현대일렉트릭앤에너지시스템(주) 아크열을 재이용하는 복합소호형 차단기
US10115548B2 (en) * 2015-01-07 2018-10-30 Mitsubishi Electric Corporation Gas circuit breaker
CN109559933A (zh) * 2018-11-16 2019-04-02 吴长兰 中高压开关装置
DE102019206807A1 (de) * 2019-05-10 2020-11-12 Siemens Aktiengesellschaft Mittelspannungs-Lasttrennschalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385214A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Disjoncteur
US4221943A (en) * 1977-03-24 1980-09-09 Mitsubishi Denki Kabushiki Kaisha Gas-blast type circuit interrupter
US4259555A (en) * 1977-03-24 1981-03-31 Mitsubishi Denki Kabushiki Kaisha Self-extinguishing gas circuit interrupter
GB1593994A (en) * 1978-05-18 1981-07-22 Aei Electric circuit breakers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE647726C (de) * 1932-11-18 1937-07-10 Siemens Schuckertwerke Akt Ges Einrichtung fuer die Loeschung von Wechselstromlichtboegen
JPS5856932B2 (ja) * 1977-03-24 1983-12-17 三菱電機株式会社 開閉器
JPS53117787A (en) * 1977-03-24 1978-10-14 Mitsubishi Electric Corp Switch
CH629332A5 (de) * 1977-03-24 1982-04-15 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschkammer.
CH641592A5 (de) * 1977-03-24 1984-02-29 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschender kammer.
JPS53117761A (en) * 1977-03-24 1978-10-14 Mitsubishi Electric Corp Switch
CH649416A5 (de) * 1980-01-25 1985-05-15 Sprecher & Schuh Ag Druckgasschalter.
DE3068564D1 (en) * 1980-09-01 1984-08-16 Sprecher & Schuh Ag Gas blast switch
JPS5944738A (ja) * 1982-09-07 1984-03-13 株式会社東芝 開閉器
JPS59144726U (ja) * 1983-03-15 1984-09-27 日新電機株式会社 ガスしや断器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385214A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Disjoncteur
US4221943A (en) * 1977-03-24 1980-09-09 Mitsubishi Denki Kabushiki Kaisha Gas-blast type circuit interrupter
US4259555A (en) * 1977-03-24 1981-03-31 Mitsubishi Denki Kabushiki Kaisha Self-extinguishing gas circuit interrupter
GB1593994A (en) * 1978-05-18 1981-07-22 Aei Electric circuit breakers

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646960A1 (fr) * 1989-05-11 1990-11-16 Alsthom Gec Disjoncteur a moyenne tension a autosoufflage
EP0398116A1 (fr) * 1989-05-11 1990-11-22 Gec Alsthom Sa Disjoncteur à moyenne tension à autosoufflage
DE3915700A1 (de) * 1989-05-13 1990-11-22 Licentia Gmbh Selbstblasschalter mit verdampfungskuehlung
WO1993013538A1 (fr) * 1991-12-21 1993-07-08 Licentia Patent-Verwaltungs-Gmbh Coupe-circuit automatique comportant une boite d'extinction d'arc
US5925863A (en) * 1996-11-05 1999-07-20 Abb Research Ltd. Power breaker
EP0951039A1 (fr) * 1998-04-14 1999-10-20 Abb Research Ltd. Sectionneur de puissance
DE19816507A1 (de) * 1998-04-14 1999-10-21 Asea Brown Boveri Abbrandschaltanordnung
WO2000077809A1 (fr) * 1999-06-11 2000-12-21 Siemens Aktiengesellschaft Disjoncteur d'alimentation haute tension dote d'un canal d'ecoulement
US6646850B1 (en) 1999-06-11 2003-11-11 Siemens Aktiengesellschaft High-voltage power breaker having an outlet flow channel
DE19928080C5 (de) * 1999-06-11 2006-11-16 Siemens Ag Hochspannungsleistungsschalter mit einem Abströmkanal
EP2120244A1 (fr) * 2008-05-15 2009-11-18 ABB Technology AG Disjoncteur haute pression
CN104064418A (zh) * 2014-04-25 2014-09-24 博耳(宜兴)电力成套有限公司 一种用于小型断路器的循环气流灭弧装置
WO2021043549A1 (fr) * 2019-09-03 2021-03-11 Siemens Energy Global GmbH & Co. KG Division d'un volume de chauffage d'un circuit de puissance
CN114342028A (zh) * 2019-09-03 2022-04-12 西门子能源全球有限公司 功率开关的加热体积的划分
CN114342028B (zh) * 2019-09-03 2024-03-08 西门子能源全球有限公司 功率开关的加热体积的划分

Also Published As

Publication number Publication date
CN85107522B (zh) 1987-11-11
CN85107522A (zh) 1986-08-20
IN165779B (fr) 1990-01-06
DE3440212A1 (de) 1986-04-17
EP0177714A3 (en) 1987-11-11
EP0177714B1 (fr) 1991-10-23
ES547715A0 (es) 1986-10-16
JPH081774B2 (ja) 1996-01-10
ES8700495A1 (es) 1986-10-16
JPS6191811A (ja) 1986-05-09
ZA856654B (en) 1986-04-30
US4684773A (en) 1987-08-04
DE3584494D1 (de) 1991-11-28

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