EP0951029A2 - Ensemble de contacts d'arc - Google Patents

Ensemble de contacts d'arc Download PDF

Info

Publication number
EP0951029A2
EP0951029A2 EP99810169A EP99810169A EP0951029A2 EP 0951029 A2 EP0951029 A2 EP 0951029A2 EP 99810169 A EP99810169 A EP 99810169A EP 99810169 A EP99810169 A EP 99810169A EP 0951029 A2 EP0951029 A2 EP 0951029A2
Authority
EP
European Patent Office
Prior art keywords
switching
burn
arrangement according
contact
pin
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
EP99810169A
Other languages
German (de)
English (en)
Other versions
EP0951029B1 (fr
EP0951029A3 (fr
Inventor
Lukas Dr. Zehner
Robert Anderes
Christian Dähler
Kurt Dr. Kaltenegger
Thomas Dr. Schoenemann
Klaus-Dieter Dr. Weltmann
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 Schweiz AG
Original Assignee
ABB Schweiz AG
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 Schweiz AG, ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Schweiz AG
Publication of EP0951029A2 publication Critical patent/EP0951029A2/fr
Publication of EP0951029A3 publication Critical patent/EP0951029A3/fr
Application granted granted Critical
Publication of EP0951029B1 publication Critical patent/EP0951029B1/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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/46—Contacts characterised by the manner in which co-operating contacts engage by sliding self-aligning 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to an erosion switching arrangement especially for circuit breakers like those in power plants, Substations and other facilities of the Electrical energy supply for switching on and off Operating and overcurrents are used.
  • the invention has for its object a Specify burn-up switching arrangement in which the Switching elements mechanically not even at high currents be overloaded. At the same time, however, contact forces are generated, which the between the switching pin and the effective with him interacting first contact Counteracting contact forces and the same way compensate that the required contact pressure is always is guaranteed.
  • this is achieved by the features of the claim 1, which ensures that the first Switch piece also with high mechanical load without further ado can resist.
  • the contact pressure is especially important through the inventive design or mounting the Switch pin achieved by contact with the first Switch piece deflected or deformed or by the occurring electromagnetic forces in the range of Contact zone is spread. This way you can always a relatively large burn-up reserve is ensured become.
  • versions are particularly favorable, in which the switching pin laterally against the inside of the presses as a switching ring formed first contact piece, because then the contact zone and the arc base supporting tip of the switching pin each independently trained according to their special tasks can be.
  • the invention relates to a switching axis 1 rotationally symmetrical housing 2 made of insulating material an annular heating volume 3 that a first Contact piece, which with a first electrical connection (not shown) is connected and a second Contact piece surrounds.
  • the first contact is the first Switch ring 4 formed
  • the second switching piece consists of a switching pin 5 and one with a second electrical Connection (not shown) connected second switching ring 6.
  • the switching pin 5 is connected to a ball joint 9 elastic rod 10 tiltably mounted so that it is one oriented transversely to the switching axis 1, but not otherwise fixed tilt axis is tiltable.
  • the rod 10 is on one Bracket 11, which by a not shown Switch drive between the on position and the Switch-off position can be moved along the switching axis 1, attached.
  • a pressure chamber 12 is arranged through a branching on all sides rotationally symmetrical return channel 13 via Check valve with heating volume 3 and through Exhaust pipes 14 and a central pressure relief valve 15 with a first exhaust volume 16a is connected.
  • the pressure room 12 and the return duct 13 are covered by a cover 17th and a cap 18, both made of insulating material, limited.
  • the opening of the second switching ring 6 is expanded against each other in the axial continuation of the arc space 7 a second exhaust volume 16b. Not shown arranged outside the Abbrandschaltanowski
  • the rod 10 is light compared to the switching axis 1 inclined so that the switching pin 5 the same in the rest position, which he in the off position occupies, something is laterally shifted.
  • the Rod act 10 elastic restoring forces that the Press switching pin 5 laterally against the switching rings. Since that Ball joint 9 and thus the pivot point of the switching pin 5 in axial direction between the first switching ring 4 and the second switching ring 6, the inclination of the Switch pin 5 so that it against the Inside of both switching rings.
  • the first switching ring 4, the second switching ring 6 and the Switch pin 5 are made of erosion-resistant material, e.g. B. WCu, graphite, CFC, graphite / Cu or CFC / Cu.
  • the current path runs in the Burn-up switching arrangement from the first switching ring 4 over the Switch pin 5 to the second switching ring 6.
  • the switching pin 5 is pulled out of the first switching ring 4, with an arc forming between them. If the Tip of the switching pin 5, the second switching ring 6 happens, the arc base jumps from switching pin 5 over to the latter.
  • the heating of the gas in the Heating volume 3 through the arc as well as the partial Redirection of the arc generated in the pressure chamber 12 Pinchdrucks via the return channel 13 in the same leads to Building up a high gas pressure in the heating volume 3, the one Escape of the gas through the blow slot 8 in the Arc room 7 and further into the exhaust volumes 16a, b at the next zero crossing, causing the arc is effectively blown and deleted.
  • the pressure in Heating volume can also be increased by the switching drive co-operated blow pistons can be increased.
  • the gas first escapes only through the opening of the first Switch rings 4, which are in the ON position from the top the switching pin 5 almost completely filled and short is released after the start of the switch-off movement.
  • the Opening of the second switching ring 6 is not released until later, if in the further course of the switch-off movement the Switch pin 5 is also withdrawn from this.
  • At Formation of the switching pin 5 of FIG. 2 are against it both openings free at the same time.
  • the diameter of the second Switch ring 6 is slightly larger than that of the first Switch rings 4 and the switching pin 5 has a front Section 19, whose diameter is approximately that of Opening of the first switching ring 4 corresponds. He goes stepwise into a rear section 20, the Diameter almost the larger of the second switching ring 6 corresponds.
  • the switching pin 5 can also be used a hinge connected to the rod 10 so that the Tilt axis oriented transversely to the switching axis spatially fixed is.
  • the switching pin 5 via a leaf spring 21 and a rigid Rod 22 connected to the bracket (not shown).
  • the leaf spring 21 is both with the rod 22 and the end of the switching pin 5 rigidly connected and so trained that the switching pin 5 in its in the Off position (Fig. 3b) assumed rest position also shifted laterally with respect to the switching axis 1 and is slightly inclined to the same side so that it is in the Switch-on position (Fig.
  • the switching pin 5 mounted axially displaceably on the holder 11 and via a axially compressible disc spring assembly 23 on the same supported.
  • the diameter of a front portion 19 of the Switch pin 5 is larger than that of the opening of the first switching rings 4 so that their hemispherical tip in the on position on the inside edge of the front of the first switching rings 4 abuts all around and with through Restoring forces of the axially compressed disc spring package 23 applied contact forces press against it.
  • To the front section 19 includes a shoulder 24 rear section 20 of larger diameter.
  • the second switching piece comprises the switching pin 5 again a second switching ring 6, which the inner edge of a Annular disk 25 surrounds.
  • the second switching ring 6 is in divided six sectors 26, likewise the circular disk 25, the six starting from the inner edge and up to one circumferential outer ring 27 through radial slots 28 which they divide into as many sectors 29.
  • the Annular disk 25 can be made of highly conductive, resilient Material, e.g. B. a hardenable copper alloy such as CuCrZr or CuBe exist, so that the sectors 26 of the second switching rings 6 with elastic deformation of them bearing sectors 29 of the annular disc 25 in the axial Direction can be deflected.
  • the Switch pin rigid and preferably solid and supported elastically and is in the on position by contact with the first switching ring and the second Switch ring deflected so that from the bracket elastic restoring forces act on it for the required contact forces between switching pin and Provide shift rings.
  • the switching pin itself in the area of the contact zone or -Zones of two or more parts, at least in part are radially limited and movable by mechanical or electromagnetic forces are spread apart, so that they face the Press the inside of the shift rings.
  • the switching pin 5 preferably coaxial with the first switching ring 4 and the second switching ring 6, so that the switching pin axis with the Switch axis 1 coincides. He assigns one with the Bracket (not shown) connected central carrier 30, which is surrounded by a sleeve 31.
  • the carrier 30 is designed as a cylindrical mandrel, which on the Tip into one at an angle against the switch pin tip Directional, tapered wedge surface 32 expires.
  • the sleeve 31 also surrounds the tip of the carrier 30 eight contact pieces distributed over its circumference, which as elongated contact fingers 33 separated by slots erosion-resistant material are formed and by a continuous ring 34 at the rear end of the sleeve 31st be held together.
  • the sleeve 31 is inserted into the Tip of the carrier 30 screwed fixing screw 35, whose head the tips of the contact fingers 33 laterally towered over, held onto the carrier 30.
  • the contact fingers 33 have on their inner sides Spreading surfaces 36, which in the switch-on position Wedge surface 32 of the carrier 30 bear. On the outside the contact fingers 33 each have a step which forms a stop surface 37 which in the switched-on position abuts the second switching ring 6.
  • the sleeve 31 is through a supported on the carrier 30 coil spring 38 with a counter the tip of the switching pin directed elastic force acted upon.
  • the fixing screw 35, or at least her Head can in turn be made of erosion-resistant material, while the sleeve 31 made of highly conductive spring-elastic Material can be made.
  • the contact fingers 33 are in the off position under the action of the coil spring 38 in its front End position. Just before the end of the switch-on movement the stop surface 37 against the second switching ring 6 what the movement of the contact fingers 33 in a position in which the wedge surface 32 and the spreading surfaces 36 approximately in the middle between the first switching ring 4 and the second switching ring 6 lie, stops.
  • the carrier 30 is under compression of the Spiral spring 38 pushed a little further, whereby the wedge surface 32 abuts the expansion surfaces 36 and the Contact fingers 33 radially outwards with their contact surfaces 39 and 40, which have a first and a second contact zone form, against the insides of both the first switching ring 4 and the second switching ring 6 presses.
  • Burn-up switching arrangement which is very similar to the fourth, in this case the six contact fingers 33 are among themselves not connected. They are held by a retaining ring 41 on the carrier 30, which surrounds it at a distance, held together.
  • the Fixing screw 35 is formed like a cap diagonally against the bracket, i.e. pointing backwards cone-shaped circumferential pressure surface 42 which at Switch-off movement against corresponding compression surfaces 43 at the front ends of the shift finger 33 presses so that they are pressed radially inwards there.
  • a Spring element which the shift finger 33 with one against the Force applied to the tip of the switching pin 5, was waived here. If the start of the Switching-off movement is sufficient for the inertia of the contact fingers 33 for a solution to the spread of the same.
  • the parts of the Switch pin also by electromagnetic forces be spread apart. This is the repulsion between antiparallel currents or the attraction between parallel currents exploited. Because these forces as well the contact lifting forces increase with increasing current, the corresponding embodiments offer the advantage that adequate compensation of the contact lifting forces guaranteed over a wide range of currents is.
  • a sixth embodiment shown in Figures 7a-c corresponds to the combustion switching arrangement according to the invention in their basic structure, albeit with some Simplifications, the first embodiment.
  • the constant parts will therefore not be repeated described.
  • the switching pin 5 is a bit before (Not shown) bracket arranged sliding tulip 44th surrounded, which, like the second switching ring 6 with the second electrical connection is connected.
  • the Contact fingers of sliding bell 44 are admittedly and switching on due to high mechanical loads subject to electromagnetic forces, but they can no burning occurs on them, completely sufficient Firmness and ensuring adequate contact can be designed with the switching pin 5.
  • the switching pin 5 in turn has a central, as with the support of connected mandrel formed carrier 30, in its tip a cap 45 made of erosion-resistant material is screwed, which is a sleeve 31 made of highly conductive resilient material, in particular a ring 34 on clamped at the front end of the same. From the ring 34 goes a group of eight at the same level on switching pin 5 arranged contact pieces separated by slots, which in turn are designed as elongated contact fingers 33 and here, surrounding the beam 30 in parallel, to the rear stand out.
  • the carrier 30 is from the cap 45 to the Ends of the contact fingers 33 from one Isolierstoffhülse 46 surrounded, with which a thicker Insulating ring 47 overlaps.
  • FIG. 8 corresponding seventh embodiment of the Burn-up switching arrangement according to the invention are (FIG. 8) Contact finger 33 on the portion of the conductor 48 forming the Carrier 30 stored by their front ends of a Overhang of the cap 45 and its rear ends by one with the insulating sleeve 46 one-piece retaining ring 41st be attacked.
  • the insulating sleeve 46 supported, approximately in the middle on the inside of the Contact fingers 33 attacking compressed leaf springs 49 the same are pressed radially outwards, so that in the Switch on position the electromagnetic forces at the Application of the contact forces between the contact surfaces 39 on the outside of the contact fingers 33 and the inside of the first contact ring 4 by elastic forces get supported.
  • a first group of Contact fingers 33 which at the tip of the switching pin 5th Connect elastically bendable and backwards point.
  • contact fingers 50 close one against the first displaced second group on the carrier 30 with the difference that they are at one versus the other second switching ring 6 against the holder (not shown) position and forward against the Switch pin tip are directed.
  • the as the approach of Contact finger 50 of the second group with that of Contact fingers 33 of the first group of connecting conductors 48 serving portion of the carrier 30 is again one Isolierstoffhülse 46 surround him by the contact fingers 33, 50 isolated.
  • Switch pin 5 runs in the switched-on position Switch pin 5 is isolated and only on the Switching rings connected to the electrical connections - from first switching ring 4 via the contact surfaces 39 in the Contact fingers 33 of the first group, the same along to Tip of the switching pin 5, which is the connection point to Represents conductor 48, then through this back to second connection point at the base of the contact fingers 50 of the second group and then continue through this against the Switch pin tip and via their contact surfaces 51 in the second switching ring 6.
  • the current path thus runs through the Head 48 on the one hand and through the contact fingers 33 of the first group as well as the contact fingers 50 of the second Group, on the other hand, each antiparallel, so that the Contact fingers 33, 50 of both groups in the on position by the electromagnetic between the currents Forces radially outward against the inside of the first Switching ring 4 or the second switching ring 6 pressed become.
  • FIGS. 10a-h Embodiment of the invention Burn-up switching arrangement, which in the rest of the sixth Embodiment corresponds, the attraction between parallel flows to apply the required Contact forces exploited.
  • the switching pin 5 instructs two the end of the carrier 30 adjoining elastically flexible parallel extensions 52a, b, which through a slot 53rd are separated.
  • each of the extensions 52a, b a contact piece 54a or 54b with a contact surface 39 for contacting the inner surface of the first switching ring 4 with which it connects via a connecting piece 55a or 55b is connected such that each of the contact pieces 54a, b compared with the respective extension 52a or 52b a switching pin axis, which here with the switching axis 1 coincides, is offset by 180 °.
  • the connectors 55a, b are short half aisles Screw sections formed.
  • the contact pieces 54a, 54b are separated from each other by a continuation 53 'of the slot 53 Cut. Taken together, they have polygonal, in Example of a twelve-sided cross-section.
  • the first Contact piece 54a carries an approximately hemispherical cap 45 Made of fire-resistant material, which is the tip of the Switch pin 5 forms. Apart from this difference each correspond to an extension 52a or 52b, a connecting piece 55a or 55b and one Contact piece 54a or 54b existing parts of the switching pin 5, which is made in one piece with the carrier 30 from highly conductive resilient material are made completely.
  • the connecting piece 55b forms a central opening 56, through which the S-shaped bent connector 55a is passed through.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)
  • Breakers (AREA)
  • Circuit Breakers (AREA)
EP99810169A 1998-04-14 1999-03-01 Ensemble de contacts d'arc Expired - Lifetime EP0951029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816507 1998-04-14
DE19816507A DE19816507A1 (de) 1998-04-14 1998-04-14 Abbrandschaltanordnung

Publications (3)

Publication Number Publication Date
EP0951029A2 true EP0951029A2 (fr) 1999-10-20
EP0951029A3 EP0951029A3 (fr) 2000-06-07
EP0951029B1 EP0951029B1 (fr) 2006-03-01

Family

ID=7864484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810169A Expired - Lifetime EP0951029B1 (fr) 1998-04-14 1999-03-01 Ensemble de contacts d'arc

Country Status (5)

Country Link
US (1) US6100489A (fr)
EP (1) EP0951029B1 (fr)
JP (1) JP4365473B2 (fr)
CN (1) CN1183570C (fr)
DE (2) DE19816507A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019424A1 (de) * 2005-04-25 2006-11-02 Abb Technology Ag Lasttrennschalter
EP1843374A2 (fr) * 2006-04-04 2007-10-10 Siemens Aktiengesellschaft Contact d'arc
CN102714112A (zh) * 2010-02-04 2012-10-03 三菱电机株式会社 气体断路器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19816508A1 (de) * 1998-04-14 1999-10-21 Asea Brown Boveri Abbrandschaltanordnung
JP4684373B1 (ja) * 2010-02-04 2011-05-18 三菱電機株式会社 ガス遮断器
EP2455957B1 (fr) * 2010-11-22 2014-03-26 ABB Research Ltd. Système de disjoncteur à isolation gazeuse
DE102013106727B4 (de) * 2013-06-26 2015-08-06 Doduco Gmbh Kontaktstift für Hochspannungs-Leistungsschalter, Verfahren zu seiner Herstellung und Hochspannungs-Leistungsschalter mit einem solchen Kontaktstift
FR3028089B1 (fr) * 2014-10-30 2016-12-30 Alstom Technology Ltd Interrupteur ou disjoncteur a moyenne ou haute tension, pourvu de contacts fixes ameliores, et procede d'utilisation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531917A (en) * 1922-11-11 1925-03-31 Gen Electric Electric switch
US2580910A (en) * 1949-02-08 1952-01-01 S & C Electric Co Contact construction
DE893361C (de) * 1943-11-05 1953-10-15 Aeg Hochspannungstrennschalter, vorzugsweise in Einstuetzerausfuehrung
DE1220927B (de) * 1963-08-23 1966-07-14 Siemens Ag Elektrischer Schalter
DE1765932A1 (de) * 1968-08-09 1971-11-18 Siemens Ag Kontaktanordnung fuer elektrische Schalter
EP0086316A2 (fr) * 1981-12-23 1983-08-24 Asea Ab Dispositif à contact enfichable pour la réalisation d'une connexion électrique entre deux barres omnibus
EP0800190A1 (fr) * 1996-04-04 1997-10-08 Asea Brown Boveri Ag Sectionneur de puissance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3440212A1 (de) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
US4668848A (en) * 1985-07-24 1987-05-26 S&C Electric Company Alignment and centering arrangement for contacts of an interrupting device
US5298704A (en) * 1992-12-16 1994-03-29 S&C Electric Company Contact operating arrangement with shock-reducing feature for high-voltage apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1531917A (en) * 1922-11-11 1925-03-31 Gen Electric Electric switch
DE893361C (de) * 1943-11-05 1953-10-15 Aeg Hochspannungstrennschalter, vorzugsweise in Einstuetzerausfuehrung
US2580910A (en) * 1949-02-08 1952-01-01 S & C Electric Co Contact construction
DE1220927B (de) * 1963-08-23 1966-07-14 Siemens Ag Elektrischer Schalter
DE1765932A1 (de) * 1968-08-09 1971-11-18 Siemens Ag Kontaktanordnung fuer elektrische Schalter
EP0086316A2 (fr) * 1981-12-23 1983-08-24 Asea Ab Dispositif à contact enfichable pour la réalisation d'une connexion électrique entre deux barres omnibus
EP0800190A1 (fr) * 1996-04-04 1997-10-08 Asea Brown Boveri Ag Sectionneur de puissance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019424A1 (de) * 2005-04-25 2006-11-02 Abb Technology Ag Lasttrennschalter
US8232496B2 (en) 2005-04-25 2012-07-31 Abb Technology Ag Switch disconnector
EP1843374A2 (fr) * 2006-04-04 2007-10-10 Siemens Aktiengesellschaft Contact d'arc
EP1843374A3 (fr) * 2006-04-04 2008-04-30 Siemens Aktiengesellschaft Contact d'arc
CN102714112A (zh) * 2010-02-04 2012-10-03 三菱电机株式会社 气体断路器
US9012800B2 (en) 2010-02-04 2015-04-21 Mitsubishi Electric Corporation Gas circuit breaker

Also Published As

Publication number Publication date
DE59913176D1 (de) 2006-04-27
US6100489A (en) 2000-08-08
CN1234593A (zh) 1999-11-10
DE19816507A1 (de) 1999-10-21
EP0951029B1 (fr) 2006-03-01
JP4365473B2 (ja) 2009-11-18
JPH11329175A (ja) 1999-11-30
CN1183570C (zh) 2005-01-05
EP0951029A3 (fr) 2000-06-07

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