EP1153406B1 - Dispositif de limitation de courant a regeneration automatique avec metal liquide - Google Patents

Dispositif de limitation de courant a regeneration automatique avec metal liquide Download PDF

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Publication number
EP1153406B1
EP1153406B1 EP00905038A EP00905038A EP1153406B1 EP 1153406 B1 EP1153406 B1 EP 1153406B1 EP 00905038 A EP00905038 A EP 00905038A EP 00905038 A EP00905038 A EP 00905038A EP 1153406 B1 EP1153406 B1 EP 1153406B1
Authority
EP
European Patent Office
Prior art keywords
limiting device
self
channels
partition walls
regenerating current
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
EP00905038A
Other languages
German (de)
English (en)
Other versions
EP1153406A1 (fr
Inventor
Wolfgang Kremers
Frank Berger
Andreas Krätzschmar
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1153406A1 publication Critical patent/EP1153406A1/fr
Application granted granted Critical
Publication of EP1153406B1 publication Critical patent/EP1153406B1/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
    • H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling

Definitions

  • the invention relates to a self-recovering current limiting device Liquid metal according to the preamble of claim 1.
  • Such a self-recovering current limiting device is known from the publication SU 922 911 A.
  • known which contains electrodes made of solid metal separated by first insulating bodies designed as pressure-resistant insulating housings are. Inside the insulating housing are through insulating partitions and second insulating bodies arranged in between, which act as annular sealing washers are executed, partially filled with liquid metal, one after the other horizontal compressor rooms formed, one above the other with liquid metal filled, eccentrically arranged connecting channels of the partition walls are connected. So there is normal operation over the liquid metal a continuous inner conductive connection between the electrodes. In the case of current limitation, the liquid metal becomes due to the high current density displaced from the connecting channels.
  • the known current limiting devices with Liquid metal has the desired property of self-recovery, but with a relatively long switch-off time of a circuit breaker with a Current limiting device is connected in series, there is a frequent risk Reignition of the arc or arcs in the current limiting device. This leads to an increased material load and thus shortened life of the current limiting device.
  • the invention is therefore based on the object of means for targeted influencing the recombination time.
  • the changing slopes of the connecting channels are expedient than straight in the interior of the partition walls which merge into one another at an angle Subchannels executed. Rising to the inside of the partition walls on both sides Subchannels have straight lines Connection channels result in an extended recombination time since after A short circuit makes it difficult for steam or gas bubbles to escape and thus the refilling of the connection channels with liquid metal is slowed down. In contrast, have to the interior of the partition walls sub-channels dropping on both sides compared to continuous straight lines Connection channels result in a shorter recombination time because after a short circuit, the escape of vapor or gas bubbles facilitated and thus the refilling of the connecting channels Liquid metal is accelerated.
  • Such partitions can advantageously be assembled produce two part walls, each with straight, inclined part channels, the reverse-inclined sub-channels abutting and closing combine the connection channels essential to the invention.
  • Equally trained Partial walls whose wall thickness is half the nominal wall thickness of the these composite partitions, lead to inexpensive Same parts for the part walls.
  • partition walls or part walls are formed with an edge collar, the height corresponds to half or the entire width of the inner compressor rooms. So that without the need for special sealing washers by each two opposing partition walls or partial walls an inner compressor room or by one electrode and one opposite each other An outer compressor space is delimited between the partition or partial wall.
  • pressure equalization channels in the partition walls above the liquid level are provided, it is recommended to use pressure equalization channels adjacent Partitions mutually, especially to move strongly. In the event of a short circuit, this will ignite unwanted arcs Channels avoided and the recombination time extended.
  • GaInSn alloys are easy to handle due to their physiological Safety.
  • An alloy of 660 parts by weight gallium, 205 parts by weight of indium and 135 parts by weight of tin are included Normal pressure from 10 ° C to 2000 ° C liquid and has sufficient electrical Conductivity.
  • the current limiting device 10 contains on both sides an electrode 1 made of solid metal, preferably copper, which is rotationally symmetrical is formed and merges into an outer lead 2. Between the electrodes 1 are a plurality of compressor rooms 4, through a corresponding number of insulating partitions 12 on both sides collar 13 formed in the shape of an annular ring.
  • the two outer compressor rooms 4 are laterally by one of the Electrodes 1 and delimited by an intermediate wall 12.
  • the inner compressor rooms 4 are laterally delimited by two partitions 12.
  • the connecting channels 17 of adjacent partitions 12 can advantageously be offset by a certain angular amount in order to Current limiting case to complicate a continuous arc.
  • the Connection channels 17 consist of two angularly merging and rectilinear sub-channels 18, 19 together.
  • the subchannels 18 and 19 extend from the outer walls to the interior of the intermediate walls 12 obliquely downwards, that is directed away from the liquid level 9.
  • the current limiting device 20 according to FIG. 2 differs from that described above essentially by the formation of their partitions 22, 23 and formed by annular sealing disks 21 further insulating body between the partition walls 22, 23 and between the outer partitions 22 and the adjacent electrodes 1.
  • Die Partitions 22, 23 are each made of two identical partitions 24 and 25 composed with an inclined subchannel 28 and 29th are provided. Depending on which of your two front sides two partitions 24 and 25 are close together, connecting channels 26 or 27 formed, the different directions of inclination from the outside inwards exhibit.
  • the two outer walls are through the partial walls 24 and 25 Partitions 22 composed so that the through the sub-channels 28 and 29 formed V-shaped connecting channels 26 on both sides for Liquid level 9 of the liquid metal 7 open obliquely, whereas the inner Partitions 23 are composed so that the by Subchannels 28 and 29 formed inverted V-shaped connecting channels 27 Open diagonally away from the liquid level 9 on both sides.
  • the outer connection channels 26 have a shortened and the inner connecting channels 27 an extended recombination time after a short circuit.
  • the present invention is not limited to the above-described embodiments limited.
  • Manufacture current limiting devices that meet different current limiting conditions are largely adapted.

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  • Emergency Protection Circuit Devices (AREA)

Claims (10)

  1. Dispositif de limitation de courant à régénération automatique avec métal liquide, contenant des électrodes (1) en métal solide, pour raccordement à un circuit électrique à protéger et plusieurs espaces de compression (4) situés l'un derrière l'autre entre les électrodes (1) et partiellement remplis d'un métal liquide (7), lesdits espaces de compression étant formés par des corps isolants (5 ; 21) résistants à la pression et par des parois intermédiaires isolantes (12 ; 22 ; 23) maintenues par lesdits corps isolants et munies de canaux de liaison (17 ; 26 ; 27) pour le métal liquide (7), caractérisé en ce qu'au moins une partie des canaux de liaison (17 ; 26 ; 27) présentent un profil longitudinal sensiblement en V ou V inverse.
  2. Dispositif de limitation de courant à régénération automatique suivant la revendication 1, caractérisé en ce que ladite partie canaux de liaison (17 ; 26 ; 27) comporte deux canaux partiels droits (18, 19 ; 28, 29) qui se rencontrent angulairement.
  3. Dispositif de limitation de courant à régénération automatique suivant la revendication 2, caractérisé en ce que les canaux partiels (28, 29) sont orientés vers l'intérieur des parois intermédiaires (23) et vers le niveau liquide (9).
  4. Dispositif de limitation de courant à régénération automatique suivant la revendication 2, caractérisé en ce que les canaux partiels (18, 19 ; 28, 29) sont orientés vers l'intérieur des parois intermédiaires (12 ; 22) et en une direction opposée au niveau liquide (9).
  5. Dispositif de limitation de courant à régénération automatique suivant l'une des revendications 3 ou 4, caractérisé en ce que les parois intermédiaires (22 ; 23) sont divisées en deux parois partielles (24, 25) se recouvrantes dans lesquelles sont prévues les canaux partiels droits (28, 29) disposés dans un plan incliné.
  6. Dispositif de limitation de courant à régénération automatique suivant la revendication 5, caractérisé en ce que les parois partielles (24, 25) sont de construction identique et que lesdites parois partielles sont en contact étroit, au choix par l'une ou l'autre de leurs deux surfaces de front respectivement
  7. Dispositif de limitation de courant à régénération automatique suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les parois intermédiaires (12) sont des deux côtés munies de collets (13) sur le bord, dont la hauteur est égale à la moitié de la largeur des espaces de compression intérieurs (4) et que les surfaces de front des collets (13) des parois intermédiaires opposées (12) sont en contact étroit.
  8. Dispositif de limitation de courant à régénération automatique suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les parois intermédiaires (12) sont d'un côté munies de collets sur le bord, dont la hauteur est égale à la moitié de la largeur des espaces de compression intérieurs (4) et que les surfaces de front des collets (13) des parois intermédiaires opposées (12) sont en contact étroit.
  9. Dispositif de limitation de courant à régénération automatique suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que des canaux traversants d'équilibre de pression sont prévus dans les parois intermédiaires à un niveau supérieur au niveau liquide, lesdits canaux d'équilibre de pression étant décalés les uns par rapport aux autres.
  10. Dispositif de limitation de courant à régénération automatique suivant l'une quelconque des revendications précédentes, caractérisé en ce que le métal liquide (7) est un alliage GaInSn.
EP00905038A 1999-02-10 2000-02-08 Dispositif de limitation de courant a regeneration automatique avec metal liquide Expired - Lifetime EP1153406B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999105372 DE19905372C1 (de) 1999-02-10 1999-02-10 Selbsterholende Strombegrenzungseinrichtung mit Flüssigmetall
DE19905372 1999-02-10
PCT/EP2000/001005 WO2000048216A1 (fr) 1999-02-10 2000-02-08 Dispositif de limitation de courant a regeneration automatique avec metal liquide

Publications (2)

Publication Number Publication Date
EP1153406A1 EP1153406A1 (fr) 2001-11-14
EP1153406B1 true EP1153406B1 (fr) 2003-04-16

Family

ID=7896958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00905038A Expired - Lifetime EP1153406B1 (fr) 1999-02-10 2000-02-08 Dispositif de limitation de courant a regeneration automatique avec metal liquide

Country Status (3)

Country Link
EP (1) EP1153406B1 (fr)
DE (1) DE19905372C1 (fr)
WO (1) WO2000048216A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH273223A (de) * 1946-02-19 1951-01-31 Fkg Ag Vorrichtung zur Begrenzung elektrischer Ströme.
CH308101A (de) * 1952-08-19 1955-06-30 Fkg Ag Lichtbogenfester Isolierkörper.
FR1339243A (fr) * 1961-12-27 1963-10-04 Merlin Gerin Perfectionnements aux interrupteurs électriques comportant une résistance liquide
DE1513333A1 (de) * 1965-11-30 1969-10-16 Licentia Gmbh Strombegrenzende Sicherung
DE1788143B1 (de) * 1967-04-19 1972-12-21 Gen Electric Strombegrenzungsvorrichtung
NL7509962A (en) * 1975-08-22 1977-02-24 Hazemeijer Bv Electrical current limiting device - has cylindrical housing in two parts with central insulator and internal filling of conductive liquid metal
DE2652506A1 (de) * 1976-11-18 1978-05-24 Gec Elliott Automation Ltd Elektrische hochstromvorrichtungen
SU922911A1 (ru) * 1980-05-05 1982-04-23 Kb Polt Inst Kujbysheva Токоограничитель 1
SU1076981A1 (ru) * 1982-07-29 1984-02-29 Куйбышевский ордена Трудового Красного Знамени политехнический институт им.В.В.Куйбышева Токоограничитель
DD282778A5 (de) * 1989-04-26 1990-09-19 Karl Marx Stadt Tech Hochschul Stromgesteuerte abschaltvorrichtung

Also Published As

Publication number Publication date
WO2000048216A1 (fr) 2000-08-17
EP1153406A1 (fr) 2001-11-14
DE19905372C1 (de) 2000-08-24

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