EP0116837B1 - Disposition de contact pour interrupteur sous vide - Google Patents

Disposition de contact pour interrupteur sous vide Download PDF

Info

Publication number
EP0116837B1
EP0116837B1 EP84100246A EP84100246A EP0116837B1 EP 0116837 B1 EP0116837 B1 EP 0116837B1 EP 84100246 A EP84100246 A EP 84100246A EP 84100246 A EP84100246 A EP 84100246A EP 0116837 B1 EP0116837 B1 EP 0116837B1
Authority
EP
European Patent Office
Prior art keywords
contact
cup
contact arrangement
arrangement
condensation plate
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
Application number
EP84100246A
Other languages
German (de)
English (en)
Other versions
EP0116837A1 (fr
Inventor
Heinrich Dr. Hässler
Wilfried Kuhl
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0116837A1 publication Critical patent/EP0116837A1/fr
Application granted granted Critical
Publication of EP0116837B1 publication Critical patent/EP0116837B1/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6646—Contacts; Arc-extinguishing means, e.g. arcing rings having non flat disc-like contact surface

Definitions

  • the invention relates to a contact arrangement for vacuum switches with contacts that are movable relative to one another in their axial direction, of which the first is designed as a pot contact, the side wall of which the internal height is greater than the contact stroke of the contacts partially surrounds the second contact to form an annular gap .
  • the quenching chamber of larger vacuum switches is generally provided with at least one so-called steam shield, which, however, makes the switch more expensive and enlarges the quenching chamber accordingly.
  • a diffuse metal vapor arc is obtained, the operating voltage of which is only about 20 to 50 V due to the low field strength in the plasma.
  • the arc load of such contacts, between which a diffuse arc burns, is therefore relatively low during the extinguishing process.
  • the switching tasks of the switching tubes for relatively low switching capacity can therefore be fulfilled by means of disc contacts with flat or slightly curved contact contact surfaces. Since metal particles and, in the case of a narrow contact gap, the metal vapor are predominantly emitted radially to the contact contact surface, the erosion products reach the housing of the arcing chamber in the shortest possible way. Some of these erosion products are deposited in a relatively narrow, ring-shaped wall zone that concentrically surrounds the gap between the open contacts.
  • the thermal load in this zone is accordingly high.
  • Another part of the metal vapor emerging from the contact gap is reflected at least once on the housing wall and can thus also reach switch parts that are not directly connected to the metal vapor.
  • the invention is therefore based on the object of preventing an unfavorable effect of the erosion products on the switch properties in a vacuum switch for high switching numbers and relatively low switching power. At the same time, the erosion behavior of the switch should be improved and the switch should also have a simple structure and a small size.
  • one of the two coaxially arranged contacts as a pot contact in vacuum switches with so-called axial field contacts, the inside of its side wall, which widens conically towards the edge, overlaps the other contact, whose outer side also widens conically.
  • the opening angle of the pot contact is chosen to be smaller than the opening angle of the other contact, so that when the contacts are closed there is an annular contact contact surface between the conical surface parts and an arc is drawn there when the contacts are opened.
  • the arc is supposed to rotate in a radial plane between the conical surfaces due to magnetic force (DE-A-2 925 189).
  • the contact contact surfaces are formed in a flat central area at the bottom of the pot contact and on the free end face of the other contact.
  • Such a known contact arrangement for vacuum switches contains pot contacts in which the side wall of the first contact, the bottom of which serves as the contact contact surface, at least partially encloses the second contact, the end face of which forms the contact contact surface.
  • Magnetic forces are intended to drive the arc radially outward between the concentric side walls of the contacts, the surfaces of which face one another and serve as areas of erosion (DE-A-2 546 376).
  • the above object is achieved according to the invention in a contact arrangement of the type mentioned by the features of the characterizing part of the patent claim.
  • the contact arrangement is fed through the side wall of the pot contact, which acts as a metal vapor guide ring, the major part of the metal vapor to the free outer surface of the condensation plate, where it can condense.
  • the condensation plate can be provided with a groove structure.
  • the end face facing the second contact can be designed such that it forms a nozzle-profile-like annular gap with the facing part of the free surface of the first contact and the condensation plate.
  • the vapor exit angle can be selected so that even with a single reflection of a certain number of metal atoms on the condensation plate, no insulation parts are reached from the metal vapor.
  • a pot contact is designated 2, the side wall 4 bil a metal vapor guide ring det and in which the free end face of the bottom 6 serves as a contact support surface.
  • the pot contact 2 is relatively movable with the aid of a power supply 8 to a further contact 12 which is designed as a disk-shaped flat contact and whose free end face forms the contact contact surface.
  • a disk-shaped condensation plate 16 is provided, which consists of a good heat-conducting material, preferably copper or also a chromium-copper alloy, and whose diameter D is substantially larger than the inner diameter d of the pot contact 2.
  • a power supply 18 for the contact 12 is attached to the condensation plate 16. However, it can also be connected to the housing 14 of the vacuum chamber.
  • a particularly advantageous embodiment of the contact arrangement is obtained in that the condensation plate 16 is provided with grooves 22 on its free surface projecting beyond the contact 12, the width b of which can be chosen to be smaller than its distance a and also smaller than its depth t. These grooves 22 enlarge the condensation area. They also reduce the part of the material reflected in the arcing chamber because the material reflected within a groove hits the opposite groove wall.
  • the groove structure is preferably designed such that the ratio of groove width b to groove spacing a is approximately 0.2 to 0.8.
  • a particularly favorable effect on the metal vapor flow during the extinguishing process is obtained if the height of the side wall 4 inside the pot contact 2 is at least 1.5 times the contact stroke h. However, this height s of the side wall 4 will generally not substantially exceed twice the contact stroke, so that the flow of the metal vapor is not excessively impeded. Due to the deflecting effect of the side wall 4 as a metal vapor guide ring, the plasma jets and metal vapors produced during the extinguishing process are fed to the condensation plate 16 and can thus condense in the vicinity of the contact.
  • the diameter D of the condensation plate 16 is preferably selected such that metal vapor radiated in the direction indicated by a dash-dotted line 23 still occurs on the free surface of the condensation plate 16. This direction results from the connecting line between the outer edge of the contact 12 and the inner edge of the side wall 4 of the pot contact 2. An additional steam shield to protect an insulator of the housing 14, not shown in the figure, is therefore not necessary.
  • the contact arrangement shown in FIG. 2 contains a flat pot contact 3, the inner surface of which is rounded at the transition between the central and unspecified contact contact surface and the edge of the side wall 5.
  • the narrow surface of the flat contact 13 is inclined such that an annular gap 24 with an outflow-favorable nozzle profile is formed between the side wall 5 of the cup contact 3 and the flat contact 13.
  • the impediment to the metal vapor flow through the metal vapor guide ring of the pot contact 3 is correspondingly low.

Claims (7)

1. Dispositif de contact pour des interrupteurs sous vide avec des contacts mobiles entre eux dans leur direction axiale, contacts parmi lesquels le premier est réalisé sous la forme d'un contact en pot (2, 3) dont la paroi latérale (4, 5) qui a une hauteur intérieure (s) qui est supérieure à la course (h) des contacts, entoure partiellement le second contact (12, 13) avec formation d'une fente annulaire (24), caractérisé par le fait qu'entre le second (12, 13) et son amenée de courant (18) est disposée une plaque de condensation (16) dont le diamètre (D) est supérieur au diamètre intérieur (d) de ce contact (2, 3), mesuré au bord du contact en pot (23), d'une quantité telle que les particules métalliques ou les vapeurs métalliques qui sortent de la fente annulaire (24) frappent, pour une partie prépondérante, ladite plaque de condensation.
2. Dispositif de contact selon la revendication 1, caractérisé par le fait que la plaque de condensation (16) est reliée au boîtier (14) de la chambre sous vide.
3. Dispositif de contact selon la revendication 1 ou 2, caractérisé par le fait que la surface libre de la plaque de condensation (16), qui est tournée du côté du contact en pot (2), est pourvue de sillions (22) (figure 1).
4. Dispositif de contact selon la revendication 3, charactérisé par le fait que la largeur (b) des sillons (22) est inférieure à leur profondeur (t).
5. Dispositif de contact selon la revendication 3, caractérisé par le fait que la largeur (b) des sillons (23) est inférieure à leur distance mutuelle (a).
6. Dispositif de contact selon la revendication 1 ou 2, caractérisé par le fait que la surface de la paroi latérale (5) du contact en pot (3), qui est tournée du côté du second contact (13), et le côté étroit du premier contact (13) ont respectivement une allure conique qui est telle que la fente annulaire (24) qui est ainsi formée, présente un profil en tuyère (figure 2).
7. Dispositif de contact selon l'une des revendications 1 à 6, caractérisé par le fait que la hauteur (s) de la paroi latérale (4, 5) est égale, à l'intérieur du contact en pot (2, 3), à au moins 1,5 fois la course de contact (h) du dispositif de contact.
EP84100246A 1983-01-24 1984-01-11 Disposition de contact pour interrupteur sous vide Expired EP0116837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833302201 DE3302201A1 (de) 1983-01-24 1983-01-24 Kontaktanordnung fuer vakuumschalter
DE3302201 1983-01-24

Publications (2)

Publication Number Publication Date
EP0116837A1 EP0116837A1 (fr) 1984-08-29
EP0116837B1 true EP0116837B1 (fr) 1987-01-07

Family

ID=6189038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100246A Expired EP0116837B1 (fr) 1983-01-24 1984-01-11 Disposition de contact pour interrupteur sous vide

Country Status (4)

Country Link
US (1) US4542266A (fr)
EP (1) EP0116837B1 (fr)
JP (1) JPS59141126A (fr)
DE (2) DE3302201A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701759A1 (de) * 1987-01-22 1988-08-04 Calor Emag Elektrizitaets Ag Kontaktanordnung fuer einen vakuumschalter
US4797522A (en) * 1988-02-11 1989-01-10 Westinghouse Electric Corp. Vacuum-type circuit interrupter
DE4128798A1 (de) * 1991-08-27 1992-04-02 Slamecka Ernst Vakuumschalter
DE19503347A1 (de) * 1995-02-02 1996-08-08 Abb Patent Gmbh Die Kontaktstelle eines Vakuumschalters umgebendes Abschirmelement
DE19639064C2 (de) * 1996-09-16 2001-05-31 Eaw Relaistechnik Gmbh Elektromagnetisch betätigtes, dreipolig symmetrisch aufgebautes Schütz
CA2254349C (fr) * 1997-11-19 2003-11-04 Kabushiki Kaisha Toshiba Structure liee de materiaux metalliques dissemblables
JP2000113778A (ja) * 1998-10-06 2000-04-21 Mitsubishi Electric Corp 永久電流スイッチ
JP2000268684A (ja) * 1999-03-18 2000-09-29 Mitsubishi Electric Corp スイッチギア
JP4818530B2 (ja) † 2001-04-19 2011-11-16 三菱電機株式会社 真空バルブ
JP5197065B2 (ja) * 2008-02-26 2013-05-15 株式会社東芝 真空バルブ
DE102018200450A1 (de) * 2018-01-12 2019-07-18 Siemens Aktiengesellschaft Vakuumschaltröhre
CN109326485B (zh) * 2018-09-13 2020-03-17 西安交通大学 灭弧室触头结构及确定合成试验回路暂态电压波形的方法
US11694864B2 (en) * 2020-09-30 2023-07-04 Eaton Intelligent Power Limited Vacuum interrupter with trap for running cathode tracks

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366762A (en) * 1965-04-16 1968-01-30 Gen Electric Arc controlling electrodes for switches and gaps
DE2048506C3 (de) * 1970-10-02 1978-09-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschalter
DD96801A1 (fr) * 1971-11-27 1973-04-12
CH554067A (de) * 1973-09-19 1974-09-13 Sprecher & Schuh Ag Lichtbogenelektrode, insbesondere fuer eine kontaktanordnung in einem vakuumschalter.
US3996437A (en) * 1973-12-03 1976-12-07 Cutler-Hammer, Inc. Vacuum contactor for motor control and method of making
DD117140A1 (fr) * 1974-12-20 1975-12-20
US4249050A (en) * 1977-12-30 1981-02-03 Tokyo Shibaura Denki Kabushiki Kaisha Vacuum switch
DE2925189C2 (de) * 1979-06-22 1983-11-10 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Mehrpoliger Vakuumschalter
JPS633067Y2 (fr) * 1980-11-05 1988-01-26

Also Published As

Publication number Publication date
EP0116837A1 (fr) 1984-08-29
JPH0137821B2 (fr) 1989-08-09
US4542266A (en) 1985-09-17
DE3461965D1 (en) 1987-02-12
JPS59141126A (ja) 1984-08-13
DE3302201A1 (de) 1984-07-26

Similar Documents

Publication Publication Date Title
DE3413728C3 (fr)
EP0116837B1 (fr) Disposition de contact pour interrupteur sous vide
DE3433166C2 (fr)
DE2363044C2 (de) Vakuumschalter
DE4002933C2 (fr)
EP0149061B1 (fr) Interrupteur sous vide pour la basse tension, en particulier protecteur à basse tension
EP0558797B1 (fr) Dispositif de pulvérisation cathodique
DE2459270C2 (de) Vakuumunterbrecher
DE102005003812A1 (de) Verfahren zur Herstellung eines Kontaktstückes, sowie Kontaktstück für eine Vakuumschaltkammer selbst
DE1298598B (de) Vakuumschalter
DE3041548C2 (de) Leuchtstofflampe mit beheizter Kathode
DE2135933A1 (de) Vakuumschalter
CH616268A5 (fr)
DE2633543B2 (de) Vakuumschalter
EP0568166B1 (fr) Tube interrupteur à vide
EP0277341B1 (fr) Dispositif d'application d'un arc
WO2001008186A1 (fr) Systeme de contact d'un interrupteur a vide
DE2210160A1 (de) Elektronenstrahlerzeuger fuer laufzeitroehren
CH634441A5 (de) Kontaktstueckanordnung in vakuumschalter.
DE3345493C2 (de) Vorrichtung zum Stabilisieren eines Verdampfungslichtbogens
DE3842919A1 (de) Schaltstueck fuer einen vakuumschalter und verfahren zur herstellung eines solchen schaltstuecks oder eines entsprechend beschaffenen bauteils
DE3346778A1 (de) Kontaktanordnung fuer vakuumschalter
DE2639033C3 (de) Bauteil in mit Ladungsträgerstrahlen arbeitenden elektrischen Vakuumgeräten und Verfahren zu dessen Herstellung
DE4422316A1 (de) Vakuumschaltröhre mit ringförmigem Isolator
DE2902489A1 (de) Kontaktanordnung fuer vakuumschalter

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 NL SE

17P Request for examination filed

Effective date: 19841221

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 NL SE

REF Corresponds to:

Ref document number: 3461965

Country of ref document: DE

Date of ref document: 19870212

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

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: FR

Payment date: 19890222

Year of fee payment: 6

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

Ref country code: SE

Payment date: 19890224

Year of fee payment: 6

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

Ref country code: CH

Payment date: 19890424

Year of fee payment: 6

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

Ref country code: SE

Effective date: 19900112

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

Ref country code: LI

Effective date: 19900131

Ref country code: CH

Effective date: 19900131

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

Ref country code: FR

Effective date: 19900928

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84100246.2

Effective date: 19901107

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

Ref country code: GB

Payment date: 19961219

Year of fee payment: 14

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

Ref country code: NL

Payment date: 19970130

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: 19970317

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: 19980111

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

Ref country code: NL

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

Effective date: 19980801

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

Effective date: 19980111

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980801

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: 19981001