EP0195904A1 - Interrupteur à gaz comprimé - Google Patents

Interrupteur à gaz comprimé Download PDF

Info

Publication number
EP0195904A1
EP0195904A1 EP86101492A EP86101492A EP0195904A1 EP 0195904 A1 EP0195904 A1 EP 0195904A1 EP 86101492 A EP86101492 A EP 86101492A EP 86101492 A EP86101492 A EP 86101492A EP 0195904 A1 EP0195904 A1 EP 0195904A1
Authority
EP
European Patent Office
Prior art keywords
gas
outflow pipe
arc
chamber
switching
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
EP86101492A
Other languages
German (de)
English (en)
Other versions
EP0195904B1 (fr
Inventor
Imre Horváth
Lutz Dr. Niemeyer
Wolfgang Dr. Widl
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 EP0195904A1 publication Critical patent/EP0195904A1/fr
Application granted granted Critical
Publication of EP0195904B1 publication Critical patent/EP0195904B1/fr
Expired 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
    • H01H33/98—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 starts with a compressed gas switch according to the preamble of claim 1.
  • the invention relates to a prior art of gas pressure switches, as described in DE-C2 28 11 947.
  • the known pressure gas switch has an extinguishing gas-filled heating volume, in which when the extinguishing gas pressure is switched off, the thermal heating effect of an arc drawn between two separating contact pieces increases to a greater or lesser extent, depending on the strength of the current to be switched off.
  • a valve which is dependent on the position of the movable two switching elements.
  • Another valve is also required manoeuvrable to prevent overloading the heating volume when switching comparatively large currents.
  • the invention as characterized in the claims solves the problem of specifying a pressure gas switch of the type mentioned at the beginning, with which large and small flows can be switched even without the use of pressure-controlling valves.
  • the compressed gas switch according to the invention is characterized in that the use of at least one outflow pipe arranged between the arc and exhaust space enables an increased pressure build-up in the heating volume when switching small flows and an excessive build-up of pressure is avoided when switching large flows. Pressure-controlling valves can therefore be dispensed with and the bursting strength of a housing receiving the heating volume can be kept comparatively low.
  • the switching chamber 5 contains a heating volume 6 comprising the fixed switching element 3 and one when switching off between the separating ones Switching pieces 3 and 4 located arc space 7, in which an arc 8 drawn between the switching pieces 3 and 4 burns (right side of Fig. 1).
  • a nozzle opening 10 which is delimited by an insulating material body 9 and which is closed in the switched-on state by the movable contact piece 4 and through which extinguishing gas flows in the direction of the arrow when a supplied current I approaches a zero current passage.
  • the part of the arc chamber 7 located downstream of the nozzle opening 10 is connected via an outflow pipe 11 to an exhaust chamber 12 enclosed by the housing (not shown).
  • a plurality of discharge pipes can also be provided instead of one discharge pipe 11.
  • the switch according to the invention acts as follows: the fixed contact piece 3 engaged contact piece 4 moved down by a drive, not shown. In the course of the switch-off movement, the two switching pieces 3 and 4 separate and the arc 8 burning in the arc space 7 is drawn between these switching pieces. Due to its thermal effect, the arc 8 increases the pressure of the quenching gas in the heating volume 6.
  • the cool extinguishing gas located in the discharge pipe 11 blocks the outflow of the heated extinguishing gas from the arc chamber 7 and thus also from the heating volume 6, since it is at a much lower speed than that due to the lower pressure Speed of sound is blown out.
  • the cool quenching gas is pushed out of the outflow pipe 11 from the quenching gas, which is under increased pressure and is located in the heating volume 6, and the arc 8 is blown.
  • the upper and lower limits of the distance L are determined by a compression wave which arises in the heating phase of the arc and propagates at the speed of sound in the quenching gas, which is carried away in the outflow pipe 11 and reflected at its open end as a dilution wave.
  • there are dimensioning ranges for the distance L from c / 16f to c / 5f or from c / 10f to c / 32f.
  • the cross section of the outflow pipe 11 should be larger than the cross section of the nozzle opening 10 in order to ensure the desired pressure drop across the nozzle opening 10. It is advisable to make the cross-section of the discharge pipe 11 smaller than 0.8 xfx V H x p F / ( ⁇ p LB xc ), where U H is the size of the heating volume 6, f is the mains frequency of the current to be switched off, P F is the filling pressure of the extinguishing gas , ⁇ p LB the pressure built up by the arc 8 in the heating volume 6 in addition to the filling pressure PF at maximum current, for which the blocking effect of the outflow pipe 11 is just still required (generally approx. 1 bar) and c is the speed of sound. With such a dimensioning, the energy loss caused by the outflow of the heated extinguishing gas into the downstream of the nozzle opening 10 and upstream of the phase boundary between hot and cold gas in the outflow pipe 11 is limited to approximately ZO%.
  • the outflow pipe 11 can, as shown in FIG. 1, be cylindrical. But it can also - as shown in dashed lines in Fig. 1 - be curved. In this way, the advantage is additionally achieved that the exhaust gases reach the exhaust space 12 at any desired (in particular dielectric-free) location.
  • the outflow pipe 11 is also possible to arrange directly in the movable switching element 4.
  • the drain pipe should be made of a heat-resistant material.
  • Such material is preferably made of metal, such as copper or steel, and can, for example, form the entire wall of the outflow pipe or can only be arranged at some points on this wall.

Landscapes

  • Circuit Breakers (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
EP86101492A 1985-02-27 1986-02-05 Interrupteur à gaz comprimé Expired EP0195904B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH889/85 1985-02-27
CH88985 1985-02-27

Publications (2)

Publication Number Publication Date
EP0195904A1 true EP0195904A1 (fr) 1986-10-01
EP0195904B1 EP0195904B1 (fr) 1989-09-20

Family

ID=4197543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101492A Expired EP0195904B1 (fr) 1985-02-27 1986-02-05 Interrupteur à gaz comprimé

Country Status (8)

Country Link
US (1) US4689453A (fr)
EP (1) EP0195904B1 (fr)
JP (1) JP2573176B2 (fr)
AU (1) AU5380086A (fr)
DE (1) DE3665792D1 (fr)
ES (1) ES8701429A1 (fr)
NO (1) NO855379L (fr)
ZA (1) ZA861196B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843199A (en) * 1986-12-08 1989-06-27 Bbc Brown, Boveri Ag Gas-blast circuit breaker
WO2000077809A1 (fr) * 1999-06-11 2000-12-21 Siemens Aktiengesellschaft Disjoncteur d'alimentation haute tension dote d'un canal d'ecoulement
WO2007122064A1 (fr) * 2006-04-24 2007-11-01 Siemens Aktiengesellschaft Unité d'interrupteur de commutateur électrique
US8389886B2 (en) 2005-09-26 2013-03-05 Abb Technology Ag High-voltage circuit breaker with improved circuit breaker rating
EP1403891B2 (fr) † 2002-09-24 2016-09-28 ABB Schweiz AG Disjoncteur
WO2020104123A1 (fr) * 2018-11-20 2020-05-28 Siemens Aktiengesellschaft Unité coupe-circuit d'un commutateur de puissance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832709C5 (de) * 1998-07-14 2006-05-11 Siemens Ag Hochspannungsleistungsschalter mit einer Unterbrechereinheit
DE102004047260B4 (de) * 2004-09-24 2006-08-03 Siemens Ag Isolierstoffgehäuse mit Belüftungsschacht

Citations (5)

* 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
FR2385211A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Interrupteur de circuit
FR2385210A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Interrupteur de circuit
EP0021951A1 (fr) * 1979-06-14 1981-01-07 Merlin Gerin Interrupteur à autosoufflage par aspiration
EP0033355A1 (fr) * 1980-01-25 1981-08-12 Sprecher + Schuh AG Disjoncteur à gaz comprimé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH632609A5 (de) * 1977-03-24 1982-10-15 Mitsubishi Electric Corp Stromunterbrecher mit lichtbogenloeschendem gas.
JPS5546286A (en) * 1978-09-28 1980-03-31 Mitsubishi Electric Corp Switching device
JPS58159136U (ja) * 1982-04-19 1983-10-24 株式会社安川電機 回転ア−ク形ガス遮断器

Patent Citations (5)

* 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
FR2385211A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Interrupteur de circuit
FR2385210A1 (fr) * 1977-03-24 1978-10-20 Mitsubishi Electric Corp Interrupteur de circuit
EP0021951A1 (fr) * 1979-06-14 1981-01-07 Merlin Gerin Interrupteur à autosoufflage par aspiration
EP0033355A1 (fr) * 1980-01-25 1981-08-12 Sprecher + Schuh AG Disjoncteur à gaz comprimé

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843199A (en) * 1986-12-08 1989-06-27 Bbc Brown, Boveri Ag Gas-blast circuit breaker
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
EP1403891B2 (fr) † 2002-09-24 2016-09-28 ABB Schweiz AG Disjoncteur
US8389886B2 (en) 2005-09-26 2013-03-05 Abb Technology Ag High-voltage circuit breaker with improved circuit breaker rating
WO2007122064A1 (fr) * 2006-04-24 2007-11-01 Siemens Aktiengesellschaft Unité d'interrupteur de commutateur électrique
RU2423751C2 (ru) * 2006-04-24 2011-07-10 Сименс Акциенгезелльшафт Блок прерывателя электрического коммутационного аппарата
WO2020104123A1 (fr) * 2018-11-20 2020-05-28 Siemens Aktiengesellschaft Unité coupe-circuit d'un commutateur de puissance
US11862420B2 (en) 2018-11-20 2024-01-02 Siemens Energy Global GmbH & Co. KG Interrupter unit for a circuit breaker

Also Published As

Publication number Publication date
JP2573176B2 (ja) 1997-01-22
ES552497A0 (es) 1986-11-16
ZA861196B (en) 1986-09-24
DE3665792D1 (en) 1989-10-26
EP0195904B1 (fr) 1989-09-20
AU5380086A (en) 1986-09-04
ES8701429A1 (es) 1986-11-16
US4689453A (en) 1987-08-25
NO855379L (no) 1986-08-28
JPS61200634A (ja) 1986-09-05

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