EP0163943A2 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

Info

Publication number
EP0163943A2
EP0163943A2 EP85105322A EP85105322A EP0163943A2 EP 0163943 A2 EP0163943 A2 EP 0163943A2 EP 85105322 A EP85105322 A EP 85105322A EP 85105322 A EP85105322 A EP 85105322A EP 0163943 A2 EP0163943 A2 EP 0163943A2
Authority
EP
European Patent Office
Prior art keywords
heating volume
switching
channel
volume
heating
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
EP85105322A
Other languages
German (de)
English (en)
Other versions
EP0163943A3 (en
EP0163943B1 (fr
Inventor
Ekkehard Dr. Schade
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 EP0163943A2 publication Critical patent/EP0163943A2/fr
Publication of EP0163943A3 publication Critical patent/EP0163943A3/de
Application granted granted Critical
Publication of EP0163943B1 publication Critical patent/EP0163943B1/fr
Expired legal-status Critical Current

Links

Images

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
    • H01H33/98—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 common preamble of claims 1 and 3.
  • the invention relates to a prior art of gas pressure switches, as is described, for example, in FIG. 1 of US Pat. No. 4,139,752.
  • the quenching gas heated by the switching arc is stored in a toroidal heating volume which coaxially surrounds the switching pieces and blows the switching arc radially when the heating effect of the switching arc decreases when the current to be switched off approaches a zero crossing.
  • a cooling device is provided in the ring channel. This cooling device lowers the temperature of the quenching gas used to blow the switching arc when it flows through the ring channel.
  • a cooling device is relatively complex and both difficult the flow of the extinguishing gas into the heating volume during the high-current phase and also the flow of the extinguishing gas when the current to be switched off approaches a zero crossing from the heating volume.
  • the invention achieves the object of specifying a gas pressure switch of the generic type, in which the quenching gas provided for blowing the switching arc is available even without the use of a cooling device at gas temperatures which are considerably lower than the temperature of the heated one Extinguishing gas lie.
  • the object is achieved in connection with the features of the preamble according to the characterizing parts of claims 1 and 3.
  • the pressure gas switch according to the invention is characterized by a high extinguishing capacity with a simple structure. This is due to the fact that the extinguishing gas heated during the switching process generates a circulation flow through which the heated extinguishing gas and the cool extinguishing gas located in the heating volume are mixed very quickly.
  • a housing filled with an extinguishing gas such as sulfur hexafluoride at a pressure of a few bar
  • an extinguishing gas such as sulfur hexafluoride at a pressure of a few bar
  • this housing there is a fixed contact piece 2, a movable contact piece 3 and an insulating body 4.
  • a heating volume 5 surrounding the contact pieces 2 and 3 is recessed, into which a ring channel 6 opens.
  • the annular channel 6 connects the heating volume 5 to an arc extinguishing zone 8 which is formed when the switching elements 2 and 3 separate and which receive a switching arc 7.
  • the heating volume 5 has an axial extent L and a radial depth D and is made up of two coaxially and two radially stretched walls limited.
  • the annular channel 6 has a width B that is small compared to the axial longitudinal extent L and radial depth D of the heating volume 5. Its outflow area is greater than or at most equal to the sum of the outflow areas of an insulating body 4 provided and closed by the movable switching element 3 in the switched-on state and a nozzle-shaped opening provided in the stationary switching element 2.
  • the heating volume 5 is preferably dimensioned such that its axial longitudinal extent and radial depth, measured from the confluence of the annular channel 6 and the heating volume 5, are approximately the same size.
  • the annular channel 6 runs almost exclusively in the radial direction through the inner of the two coaxially arranged boundary walls of the heating volume 5 and opens approximately the same distance from the two radially extending boundary walls of the heating volume 5.
  • the distances L 1 between the mouth of the annular channel 6 and the upper and lower radially extending boundary wall of the heating volume 5 correspond approximately to the radial depth D of the heating volume 5.
  • the switching piece 3 designed as a solid cylinder When switching off (right part of FIG. 1), the switching piece 3 designed as a solid cylinder is moved downward. As soon as this switching element is out of engagement with the switching element 2 designed as a nozzle tube, the switching arc 7 is formed between the switching elements 2 and 3. The switching arc heats up the extinguishing gas located in the arc extinguishing zone 8 in the high current phase, as a result of which its pressure increases. The heated extinguishing gas of high pressure flows predominantly through the ring channel 6 into the heating volume 5. In this case, a circulation flow represented by arrows is generated in the heating volume 5, which initially develops predominantly in the radial direction, and then after division on the outer coaxially formed boundary wall in the to move the upper and lower part of the heating volume.
  • the mixed extinguishing gas in the heating volume 5 flows via the ring channel 6 back into the arc extinguishing zone 8, where it blows the switching arc 7, and then via the switching element 2 designed as a nozzle tube and an opening provided in the insulating body 4 and released by the moving switching element 3 gets into an expansion room.
  • the ring channel 6 opens tangentially to the inner of the two coaxially extending boundary walls of the heating volume 5.
  • a jet of heated extinguishing gas entering the heating volume 5 is guided in the axial direction along the boundary wall (right part of FIG. 2 ), a circulation flow promoting the mixing of heated and fresh extinguishing gas being generated.
  • annular channel 6 of the pressure gas switch according to FIG. 2 has an orifice part 9 which extends along the inner of the coaxial boundary walls of the heating volume 5 and a constriction 10.
  • a further improvement in the mixing is also achieved in that the heating volume 5 of the compressed gas 2 communicates with a further volume 12 via a connecting channel 11.
  • the connection channel 11 ends in the vicinity of the mouth of the ring channel 6 and is arranged parallel to the ring channel 6.
  • the flow cross section of the connecting channel 11 and the size of the volume 12 are selected such that when the pressure in the volume 5 increases, the pressure in the volume 12 lags behind by a substantial amount relative to the pressure in the volume 5. This ensures that when the current zero crossing is approached, a jet of comparatively fresh extinguishing gas emerges from the volume 12, which jet is additionally admixed with the premixed extinguishing gas flowing out of the heating volume 5.
  • the same selection criteria are preferably used for the confluence of the connecting channel 11 in the volume 12 and the shape of the volume 12 as for the heating volume 5, in order to achieve the best possible mixing of heated and fresh extinguishing gas in volume 12.
  • a device for compressing extinguishing gas is additionally provided.
  • This device has a cylinder 13 connected to the movable contact piece 3 and a fixed piston 14 which is axially displaceable in the cylinder 13 in a sealing manner.
  • the extinguishing gas located in the cylinder 13 above the piston 14 is compressed and fed into the heating volume 5 via a feed channel 15.
  • the channel 15 opens tangentially to a radially extending boundary surface of the heating volume 5.
  • a check valve 16 is also provided in channel 13.
  • the channel 15 can also open out on an axially extending boundary wall of the heating volume. It is particularly important when guiding the channel 15 that the extinguishing gas flowing out of the channel 15 during a switching operation has the same direction as the extinguishing gas flowing in tangentially to a further boundary wall of the heating volume 5 and circulating in the heating volume 5 from the annular channel 6.
  • the movable contact piece 3 is hollow and forms with the contact piece 2 in the switched-on state (left part of FIG. 3) a contact piece overlap with a contact surface 17.
  • the contact piece 3 there is an offset downstream of the contact surface 17 in the axial direction Constriction 18 with an opening 19, the cross section of which is smaller than the cross section of the opening of the switching element 3, which is enclosed by the contact surface 17 supports and causes a pressure increase in the heating volume 5.
  • the cross section of the opening 19 is preferably dimensioned such that the quenching gas exits from the volume 20 somewhat faster into the downstream part of the switching element 3 when the current passes zero the extinguishing gas from the heating volume 5 when the switching path is open.

Landscapes

  • Circuit Breakers (AREA)
EP85105322A 1984-06-07 1985-05-02 Interrupteur à gaz comprimé Expired EP0163943B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2772/84 1984-06-07
CH277284 1984-06-07

Publications (3)

Publication Number Publication Date
EP0163943A2 true EP0163943A2 (fr) 1985-12-11
EP0163943A3 EP0163943A3 (en) 1986-12-30
EP0163943B1 EP0163943B1 (fr) 1989-08-09

Family

ID=4241262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105322A Expired EP0163943B1 (fr) 1984-06-07 1985-05-02 Interrupteur à gaz comprimé

Country Status (6)

Country Link
US (1) US4652709A (fr)
EP (1) EP0163943B1 (fr)
JP (1) JPH07105184B2 (fr)
DE (2) DE3425633A1 (fr)
ES (2) ES296664Y (fr)
IN (1) IN164798B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290950A1 (fr) * 1987-05-13 1988-11-17 BBC Brown Boveri AG Disjoncteur à gaz comprimé
EP0817228A3 (fr) * 1996-07-05 1998-12-23 Asea Brown Boveri AG Sectionneur de puissance
EP0836209A3 (fr) * 1996-10-09 1999-04-07 Asea Brown Boveri AG Disjoncteur

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02239291A (ja) * 1989-03-13 1990-09-21 Nippon Telegr & Teleph Corp <Ntt> 文節音声認識装置
DE4140776A1 (de) * 1991-12-06 1993-06-09 Siemens Ag, 8000 Muenchen, De Metallgekapselte gasisolierte schaltanlage mit einem kabelanschlussgehaeuse
DE19629475A1 (de) * 1996-07-10 1998-01-15 Siemens Ag Druckgasleistungsschalter
EP1780741B2 (fr) 2005-11-01 2013-03-06 ABB Technology Ltd Switching chamber of a high voltage switch with a heating volume for admission of pressure gas
FR3030106B1 (fr) * 2014-12-11 2017-01-13 Alstom Technology Ltd Dispositif de coupure electrique haute tension a autosoufflage optimise

Family Cites Families (14)

* 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
DE671502C (de) * 1935-05-12 1939-02-08 Studiengesellschaft Fuer Hochl Druckgasschalter mit druckabhaengiger Kammerentlastung
DE1127442B (de) * 1959-06-10 1962-04-12 Siemens Ag Elektrischer Fluessigkeitsschalter
DE1127443B (de) * 1959-12-12 1962-04-12 Sachsenwerk Licht & Kraft Ag Querstroemungsloeschkammer fuer elektrische Fluessigkeitsleistungsschalter
SE336160B (fr) * 1967-12-29 1971-06-28 Asea Ab
JPS524067A (en) * 1975-05-30 1977-01-12 Mitsubishi Electric Corp Gas breaker
FR2373141A1 (fr) * 1976-12-06 1978-06-30 Cem Comp Electro Mec Appareil electrique de coupure a haute tension, notamment un disjoncteur a autosoufflage de l'arc de coupure par un gaz
CH632609A5 (de) * 1977-03-24 1982-10-15 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschendem gas.
DE2811508C2 (de) * 1977-03-24 1983-06-16 Mitsubishi Denki K.K., Tokyo Elektrischer Druckgasschalter
JPS5438569A (en) * 1977-08-31 1979-03-23 Mitsubishi Electric Corp Switch
JPS55128221A (en) * 1979-03-26 1980-10-03 Mitsubishi Electric Corp Switch
CH649416A5 (de) * 1980-01-25 1985-05-15 Sprecher & Schuh Ag Druckgasschalter.
FR2520928A1 (fr) * 1982-02-04 1983-08-05 Alsthom Atlantique Disjoncteur a auto-soufflage pneumatique
JPS60167225A (ja) * 1984-02-10 1985-08-30 株式会社日立製作所 ガス遮断器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290950A1 (fr) * 1987-05-13 1988-11-17 BBC Brown Boveri AG Disjoncteur à gaz comprimé
US4798924A (en) * 1987-05-13 1989-01-17 Bbc Brown Boveri & Co., Ltd. Compressed-gas breaker
EP0817228A3 (fr) * 1996-07-05 1998-12-23 Asea Brown Boveri AG Sectionneur de puissance
EP0836209A3 (fr) * 1996-10-09 1999-04-07 Asea Brown Boveri AG Disjoncteur
US5905243A (en) * 1996-10-09 1999-05-18 Asea Brown Boveri Ag Power breaker

Also Published As

Publication number Publication date
US4652709A (en) 1987-03-24
ES297077U (es) 1989-01-01
EP0163943A3 (en) 1986-12-30
DE3572250D1 (en) 1989-09-14
JPS614119A (ja) 1986-01-10
JPH07105184B2 (ja) 1995-11-13
EP0163943B1 (fr) 1989-08-09
ES297077Y (es) 1989-07-16
ES296664Y (es) 1989-08-16
DE3425633A1 (de) 1985-12-12
ES296664U (es) 1988-01-01
IN164798B (fr) 1989-06-03

Similar Documents

Publication Publication Date Title
DE3440212A1 (de) Druckgasschalter
EP0067460B1 (fr) Disjoncteur de puissance pour haute tension
EP0075668A2 (fr) Disjoncteur à gaz comprimé
EP0163943A2 (fr) Interrupteur à gaz comprimé
DE2438017C3 (de) Druckgasschalter
EP2316122B1 (fr) Disjoncteur haute tension comprenant un trajet de coupure
DE2030605B2 (de) Elektrischer Druckgasschalter mit einer Blaseinrichtung zur Erzeugung einer Löschgasströmung
DE3915700C3 (de) Druckgasschalter mit Verdampfungskühlung
DE2812947C2 (de) Druckgas-Leistungsschalter
DE3341930C2 (de) Druckgasschalter
DE2759267B2 (de) Druckgasschalter
EP0160853B2 (fr) Disjoncteur à gaz comprimé
EP0290950B1 (fr) Disjoncteur à gaz comprimé
EP0081253A1 (fr) Interrupteur à gaz comprimé
DE69023471T2 (de) Gaslastschalter.
EP0817228B1 (fr) Sectionneur de puissance
DE19850395A1 (de) Leistungsschalter
EP0175209B1 (fr) Interrupteur à gaz comprimé
EP1248500A2 (fr) Torche de soudage
DE3535194A1 (de) Druckgasschalter
EP0039523A1 (fr) Disjoncteur à haute tension
EP1780741B2 (fr) Switching chamber of a high voltage switch with a heating volume for admission of pressure gas
DE2759265B2 (de) Druckgasschalter
EP0100749A1 (fr) Chambre de coupure pour disjoncteur à gaz comprimé
DE2910495A1 (de) Schaltervorrichtung mit selbsttaetiger lichtbogenloeschung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19861222

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBC BROWN BOVERI AG

17Q First examination report despatched

Effective date: 19880802

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 3572250

Country of ref document: DE

Date of ref document: 19890914

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980414

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980417

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980420

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980430

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990502

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST