EP0932176B1 - Lichtbogenkammer für Selbstbeblasender Lastschalter mit rotierendem Lichtbogen - Google Patents

Lichtbogenkammer für Selbstbeblasender Lastschalter mit rotierendem Lichtbogen Download PDF

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Publication number
EP0932176B1
EP0932176B1 EP19980410148 EP98410148A EP0932176B1 EP 0932176 B1 EP0932176 B1 EP 0932176B1 EP 19980410148 EP19980410148 EP 19980410148 EP 98410148 A EP98410148 A EP 98410148A EP 0932176 B1 EP0932176 B1 EP 0932176B1
Authority
EP
European Patent Office
Prior art keywords
contact
coil
arc
extinguishing chamber
chamber according
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.)
Expired - Lifetime
Application number
EP19980410148
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English (en)
French (fr)
Other versions
EP0932176A1 (de
Inventor
Denis Raphard
Dominique Serve
Philippe Marechal
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0932176A1 publication Critical patent/EP0932176A1/de
Application granted granted Critical
Publication of EP0932176B1 publication Critical patent/EP0932176B1/de
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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H33/185—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
    • 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
    • H01H33/982—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 in which the pressure-generating arc is rotated by a magnetic field

Definitions

  • the passage of the nominal current is generally effected in a main circuit provided with fixed and movable main contacts which separate before the opening of the arcing contacts, and which close after closing. Arc contacts.
  • the main circuit is formed by a circuit independent of the arc circuit, and is arranged either coaxially around the coil, or shifted laterally with respect to the arc circuit (in particular described in document EP-A-768692).
  • the complex architecture of such a breaker circuit breaker chamber is not suitable for a station requiring a small footprint.
  • the object of the invention is to provide an improved breaking chamber for a self-expansion circuit breaker that can be housed in a compact station.
  • the electrode is made from a cupro-tungsten alloy, and the segment is made of steel.
  • the electrode and the segment of each contact finger are separated from the contact track by an axial gap of small thickness, allowing the switching of the arc for the excitation of the coil when the moving contact separates from the electrode .
  • Each contact finger is provided with a posterior rim mounted to latch onto a centering member of a current conducting conductive pad.
  • the coil is connected to the stud by copper support arms constituting spacers separated from the contact fingers by insulating pads.
  • a spring shaped curved blade is inserted between each insulating plate and the corresponding contact finger.
  • a breaking chamber 10 for a pole of a self-expanding type high-voltage circuit breaker comprises an envelope 12 made of insulating material and filled with a gas with a high dielectric strength, in particular hexafluoride. sulfur SF6.
  • the internal volume of the interrupting chamber 10 encloses a movable tubular contact 14 cooperating with a fixed contact device 16 associated with an electromagnetic coil 18 for rotating the arc.
  • the movable contact 14 is disposed at the end of an elongate tube of conductive material, which is slidable sealingly through one of the bottoms 22 of the insulating jacket 12.
  • the outer end of the tube 20 is coupled to a mechanism control unit (not shown) for moving the movable contact 14 between a closed position ( Figure 1) and an open position ( Figure 2).
  • the fixed contact device 16 is extended by a conductive pad 24 of cylindrical shape passing through the opposite bottom 26 in the longitudinal direction of the casing 12, and connected externally to a connection pad 28 of the pole.
  • the hollow tube allows the communication of the breaking chamber 10 with the external volume of the casing 12 as soon as the contacts 14, 16 are separated to allow the gas to self-expand.
  • the insulating jacket 12 is formed by the abutment of two half-shells 12A, 12B each made by molding from a polymer resin, having a good mechanical and thermal resistance.
  • the electronic coil 18 used for extinguishing the arc comprises an axial stack of conductive copper windings 18A contiguous to one another and electrically connected in series by means of fixing 30 with interposition of inserts 18B insulating material.
  • the front face 31 of the coil 18 is provided with a track 32 of migration of the arc, said ring-shaped track 32 having an internal diameter slightly greater than the diameter of the movable contact 14.
  • the posterior coil 33 opposite the the end face 31 is connected to the conductive pad 24 by support arms 34 constituting copper spacers, which are separated from the fixed internal contact device 16 by insulating plates 36.
  • Two washers 38, 40 of steel are fixed by screws 30 on the rear face of the coil 18, after interposition of insulating washers 41.
  • the fixed contact device 16 of the self-expansion circuit breaker comprises three contact pins 42 in the form of circular sectors distributed circumferentially to form a cylindrical hollow contact.
  • the internal diameter of this hollow contact substantially corresponds to the outside diameter of the movable contact 14, so as to allow telescopic sliding, respectively at the beginning of the opening stroke, and at the end of the closing stroke of the movable contact 14.
  • Each contact pin 42 is associated with a spring 44 in the form of a curved blade, whose convex face bears against the insulating plate of the corresponding support arm 34.
  • the centering of the three contact fingers 42 with respect to the longitudinal axis of the fixed contact device 16 is effected by means of flanges 46 provided at the rear of the contact fingers 42, and mounted to hook on a centering shoulder 48 of the plot 24.
  • the coil 18 coaxially surrounds the fixed contact device 16 with a small annular clearance, the premounted assembly forming a cantilevered module fixed to the bottom 26 by means of a nut 50 accessible from outside the envelope 12.
  • each contact finger 42 is made of a composite metal structure formed by different materials assembled by soldering.
  • the main body 52 of the contact finger 42 is made of copper, and is shaped in a cylindrical sector for the passage of the permanent current when the movable contact 14 is in the closed position.
  • a cupro-tungsten electrode 54 is brazed to the front portion of the body 52 located opposite the flange 46 of attachment. This notch 54 fulfills the fixed arc contact function for the protection of the fixed contact device 16 against the effects of the arc.
  • the internal cylindrical portion of the body 52 is connected to the electrode 54 by a curved intermediate portion 56 facilitating the introduction of the movable contact 14 during the closing phase of the circuit breaker.
  • a segment 58 made of steel, or other ferromagnetic material, is brazed on the periphery of the electrode 54 and the body 52 to ensure the guidance of the arc and a good distribution of the magnetic field generated. by the coil 18 when switching the arc on the track 32.
  • the axial length of the segment 58 is greater than that of the electrode 54, and extends to the vicinity of the cylindrical portion of the body 52.
  • the movable contact 14 is inserted inside the fixed contact device 16, and is in engagement with the copper body 52 for the passage of the permanent current, which may have a nominal intensity. of 630 A.
  • the contact pressure is exerted by the springs 44 on the contact fingers 42, and the coil 18 is out of service, since the entire current passes through the stud 24, the contact fingers 42, and the contact movable 14 of the tube 20.
  • the necking forces make it possible to obtain a compensation effect on the contacts to keep them closed.
  • the control mechanism causes the tube 20 to slide upwards and the mobile contact 14 to be withdrawn in the direction of the electrode 32.
  • An arc arises as soon as the movable contact 14 separates from the electrode 54, which is separated from the track 32 by a small axial gap.
  • the migration of the arc on the track 32 then causes the passage of the current in the coil 18 and the support arms 34, with formation of a magnetic field causing the rapid rotation of the arc around the track 32.
  • the fingers of contacts 42 are then out of current.
  • the heating of the arc causes the SF6 gas to rise within the envelope 12, followed by a gas flow through the tube 20 to the expansion volume of the vessel (not shown).
  • the extinction of the arc occurs as soon as the arc is sufficiently cooled by the gas flow ( Figure 2).
  • the combined operation of the fixed contact device 16 in main contact and in arcing contact, in the internal dimensions of the coil 18, provides a very compact breaking chamber 10, and a reduced manufacturing cost.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (9)

  1. Schaltkammer für einen Hochspannungs-Leistungsschalter, die mit einem Gas hoher dielektrischer Festigkeit isoliert und mit einer Einrichtung zur Lichtbogenlöschung durch Autoexpansion des Gases ausgerüstet ist, welche Schaltkammer
    - ein Isolierstoffgehäuse (12), das eine feststehende Kontaktanordnung (16) enthält, welche mit einem beweglichen Kontakt (14) zusammenwirkt, der am Ende eines leitenden Rohres (20) angeordnet ist, das einen der Böden (22) des Gehäuses (12) verschiebbar durchragt und zwischen einer Einschaltstellung und einer Ausschaltstellung der Kontakte verschoben werden kann,
    - eine elektromagnetische Spule (18), die dazu dient, den Lichtbogen auf der an der Vorderseite der Spule (18) angeordneten Kontaktbahn (32) in Drehung zu versetzen, wobei die genannte Spule fest mit der feststehenden Kontaktanordnung (16) verbunden ist, um am gegenüberliegenden Boden (26) des Gehäuses (12) eine freistehende Einheit zu bilden,
    - Verbindungsmittel zur Herstellung einer räumlichen Verbindung zwischen der Löschkammer (10) und der Außenumgebung des Gehäuses (12), wenn nach Trennung der Kontakte die Autoexpansion des Gases erfolgt, wobei
    - die feststehende Kontaktanordnung (16) koaxial von der Zylinderspule (18) umgeben ist und mehrere, auf dem Umfang verteilte Kontaktfinger (42) aufweist, um einen Aufnahmeraum für den beweglichen Kontakt (14) zu bilden,

    dadurch gekennzeichnet, dass jeder Kontaktfinger (42) der feststehenden Kontaktanordnung (16) einen Mehrschichtaufbau aus unterschiedlichen Metallen aufweist, der
    - einen, als Zylindersegment ausgebildeten Grundkörper (52) aus Kupfer zur Führung des Dauerstroms in der Einschaltstellung des beweglichen Kontakts (14),
    - eine Elektrode (54) aus einem hitzebeständigen leitfähigen Material, die an das vordere Ende des Grundkörpers (52) angelötet ist, um einen feststehenden Lichtbogenkontakt in der Nähe der Lichtbogenführungsbahn (32) zu bilden,
    - sowie ein Segment (58) aus einem ferromagnetischen Werkstoff umfasst, das auf die Umfangsfläche der Elektrode und eines Teils des Grundkörpers (52) gelötet ist, wobei das genannte Segment im Innern der Spule (18) angeordnet ist, um eine optimale Führung des Lichtbogens auf der Bahn (32) zu erzielen.
  2. Schaltkammer nach Anspruch 1, dadurch gekennzeichnet, dass die Elektrode (54) aus einer Kupfer-Wolfram-Legierung besteht.
  3. Schaltkammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Segment (58) aus Stahl besteht.
  4. Schaltkammer nach Anspruch 1, dadurch gekennzeichnet, dass die Elektrode (54) und das Segment (58) jedes Kontaktfingers (42) in einem geringen Axialabstand zur Kontaktbahn (32) angeordnet sind und so die Umschaltung des Lichtbogens zur Erregung der Spule (18) ermöglichen, wenn sich der bewegliche Kontakt (14) von der Elektrode (54) trennt.
  5. Schaltkammer nach Anspruch 1, dadurch gekennzeichnet, dass an jedem Kontaktfinger (42) ein rückseitiger Vorsprung (46) ausgebildet ist, der rastend in ein Zentrierelement (48) eines Stromzuführungs-Leiterbolzens (24) greift.
  6. Schaltkammer nach Anspruch 5, dadurch gekennzeichnet, dass die Spule (18) mit dem Leiterbolzen (24) über Stützarme (34) aus Kupfer verbunden ist, die durch Isolierstoffplättchen (36) von den Kontaktfingern (42) getrennte Zwischenstücke bilden.
  7. Löschkammer nach Anspruch 6, dadurch gekennzeichnet, dass zwischen jedes Isolierstoffplättchen (36) und den zugehörigen Kontaktfinger (42) eine als gebogenes Blatt ausgebildete Feder (44) eingesetzt ist.
  8. Schaltkammer nach Anspruch 6, dadurch gekennzeichnet, dass die Spule (18) aus axial übereinander geschichteten, durch Isolierstoffzwischenstücke (18B) gegeneinander isolierte Leiterwindungen (18i) gebildet ist und dass die Spule (18) an ihrer der Lichtbogenbahn (32) abgewandten Rückseite Stahlscheiben (38, 40) aufweist, wobei die gesamte Anordnung durch Befestigungsschrauben (30) zusammen gehalten wird.
  9. Schaltkammer nach Anspruch 1, dadurch gekennzeichnet, dass die Verbindungsmittel durch das Hohlrohr (20) des beweglichen Kontakts (14) gebildet werden.
EP19980410148 1998-01-27 1998-12-15 Lichtbogenkammer für Selbstbeblasender Lastschalter mit rotierendem Lichtbogen Expired - Lifetime EP0932176B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801103A FR2774212B1 (fr) 1998-01-27 1998-01-27 Chambre de coupure pour un disjoncteur a auto-expansion et a arc tournant
FR9801103 1998-01-27

Publications (2)

Publication Number Publication Date
EP0932176A1 EP0932176A1 (de) 1999-07-28
EP0932176B1 true EP0932176B1 (de) 2006-03-01

Family

ID=9522422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980410148 Expired - Lifetime EP0932176B1 (de) 1998-01-27 1998-12-15 Lichtbogenkammer für Selbstbeblasender Lastschalter mit rotierendem Lichtbogen

Country Status (12)

Country Link
EP (1) EP0932176B1 (de)
JP (1) JP4434348B2 (de)
CN (1) CN1094640C (de)
AU (1) AU735933B2 (de)
BR (1) BR9900176B1 (de)
DE (1) DE69833638T2 (de)
EA (1) EA001575B1 (de)
ES (1) ES2259202T3 (de)
FR (1) FR2774212B1 (de)
ID (1) ID21803A (de)
NO (1) NO317117B1 (de)
TW (1) TW418415B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131018C1 (de) * 2001-06-27 2003-01-23 Siemens Ag Leistungsschalter
RU2207647C1 (ru) * 2001-12-14 2003-06-27 Государственный научный центр Российской Федерации Троицкий институт инновационных и термоядерных исследований Коммутационное устройство
ATE467899T1 (de) * 2007-11-02 2010-05-15 Abb Research Ltd Hochspannungsleistungsschalter mit rotierendem schaltlichtbogen
CN101465234B (zh) * 2009-01-12 2011-08-03 上海华通开关厂有限公司 隔离开关开合母线转换电流装置
WO2011151476A1 (es) 2010-05-31 2011-12-08 Ormazabal Y Cia., S.L. Interruptor de corte en gas
EP2434514A1 (de) * 2010-09-24 2012-03-28 ABB Technology AG Vakuumstromunterbrecher für eine Schutzschalteranordnung
ITMI20120406A1 (it) * 2012-03-15 2013-09-16 Cembre Spa Contatto elettrico permanente applicabile sull'anima di rotaie e simili
CN105428138A (zh) * 2015-11-20 2016-03-23 河南平芝高压开关有限公司 一种高压隔离开关
CN108735545B (zh) * 2018-06-14 2020-04-10 平高集团有限公司 消弧线圈的绝缘支架、灭弧室触头及灭弧室
CN108922821B (zh) * 2018-06-14 2020-03-06 平高集团有限公司 灭弧室、灭弧室触头及消弧线圈的绝缘支架

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249052A (en) * 1978-05-01 1981-02-03 Electric Power Research Institute, Inc. Arc spinner interrupter with chromium copper arcing contact
ZA824849B (en) * 1981-08-12 1983-11-30 Northern Eng Ind Circuit-breaker
DE3833564A1 (de) * 1987-11-24 1989-06-08 Bbc Brown Boveri & Cie Druckgasschalter
FR2739972B1 (fr) * 1995-10-16 1997-12-05 Schneider Electric Sa Disjoncteur electrique a gaz isolant et a autoexpansion

Also Published As

Publication number Publication date
DE69833638D1 (de) 2006-04-27
DE69833638T2 (de) 2006-11-09
NO990379L (no) 1999-07-28
NO317117B1 (no) 2004-08-16
NO990379D0 (no) 1999-01-27
AU1323099A (en) 1999-08-19
TW418415B (en) 2001-01-11
ES2259202T3 (es) 2006-09-16
BR9900176B1 (pt) 2010-11-30
EA199900061A2 (ru) 1999-08-26
FR2774212A1 (fr) 1999-07-30
EA001575B1 (ru) 2001-06-25
JP4434348B2 (ja) 2010-03-17
ID21803A (id) 1999-07-29
EA199900061A3 (ru) 1999-12-29
CN1094640C (zh) 2002-11-20
JPH11265641A (ja) 1999-09-28
CN1224904A (zh) 1999-08-04
AU735933B2 (en) 2001-07-19
FR2774212B1 (fr) 2000-03-10
EP0932176A1 (de) 1999-07-28
BR9900176A (pt) 1999-12-28

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