WO2012110369A1 - Contact disk for a vacuum interrupter - Google Patents

Contact disk for a vacuum interrupter Download PDF

Info

Publication number
WO2012110369A1
WO2012110369A1 PCT/EP2012/052081 EP2012052081W WO2012110369A1 WO 2012110369 A1 WO2012110369 A1 WO 2012110369A1 EP 2012052081 W EP2012052081 W EP 2012052081W WO 2012110369 A1 WO2012110369 A1 WO 2012110369A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
slots
disc
disk
vacuum interrupter
Prior art date
Application number
PCT/EP2012/052081
Other languages
German (de)
French (fr)
Inventor
Lydia Baron
Andreas Lawall
Klaus Oberndörfer
Ulf SCHÜMANN
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2012110369A1 publication Critical patent/WO2012110369A1/en

Links

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
    • H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
    • 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 disk with a Verbin ⁇ edge surface for soldering to a contact piece of a vacuum interrupter and a contact surface, said slots of an outer peripheral surface in the contact disc extend into.
  • Such a contact disk is known from DE 199 10 148 C2.
  • Such contact disks are used, for example, in RMF contacts (radial magnetic field contacts) for vacuum interrupters.
  • RMF contacts radial magnetic field contacts
  • an arc occurs between the contact disks in the interior of the vacuum interrupter, which arc rotates on the contact disk due to the radial magnetic field. This is to ensure that the arc does not stop at one point of the contact disk, so that no local damage to the contact disk is caused by the arc.
  • the disclosed vacuum interrupter has a vapor barrier in the area between the contact and contact pins, which is attached to the back of the contact and prevents the passage of steam through the slotted contacts.
  • Object of the present invention is to form a Maisschei ⁇ be of the aforementioned type, which has a simple and inexpensive construction. This is achieved according to the invention in a contact disk of the type mentioned above in that the slots extend in the axial direction from the contact surface into the contact disk in such a way that the connection surface is fully ⁇ constantly obtained.
  • the slots do not extend with respect to the axial direction or the thickness of the contact disc, as in the contact discs known from the prior art completely through the contact disc, rather, the connection surface is not penetrated by the slots and thus remains intact, so that a vapor barrier for behind arranged components as in ⁇ example, contact terminal bolt is formed by the contact ⁇ disc or its fully obtained connection surface.
  • a separate vapor barrier, the fastening means by means of its own loading as solder foils or must be fixed like, can be saved, so that a simple and kos ⁇ ten redesigner structure is ensured ,
  • a residual thickness of the contact disk in the region of the slots is between 3% and 25% of the total thickness.
  • FIG. 1 shows a three dimensional view of an exemplary embodiment of a contact plate according to the invention
  • FIG. 2 shows a sectional view through the embodiment of the contact disc according to the invention of Figure 1.
  • 1 shows a contact disc 1, which is intended for use on a contact piece of a vacuum interrupter (not shown in the figure) and usually made of a copper fer chrome material is made.
  • 1 shows a three dimensional view is shown on a contact surface 2 of the Kon ⁇ timing disc 1, wherein the contact disc 1 has slots is exemplarily referred to a slot 3 of which, which slots extend from an outer periphery 4 of the contact plate 1 is 1-shaped extend into the contact disc 1 inside.
  • the slots 3 have rounded edges 5 and 6 both in the area of the outer circumference 4 and in the inner area of the contact area 2, wherein the rounded edges 5 and 6 are intended to reduce field peaks in the area of the slots.
  • the slots 3 in the contact disc 1 is not thereby extend completely through the contact ⁇ disk 1 with respect to an axial direction, but are designed such that one of the contact surface 2 connecting surface 7 waive- quietly located is not traversed by the slots, but the connecting surface completely he ⁇ hold is.
  • Figure 2 shows a sectional view through the contact disk 1 of Figure 1 along the designated in Figure 1 with II
  • a residual thickness d of the contact disk 1 in the region of the slots 3 is in relation to the total thickness D of the contact ⁇ disc 1 between 3% and 25% of the total thickness D.
  • Such a ⁇ like residual thickness d of the contact disc in the slots 3 has been particularly proven advantageous on the one hand to ensure a sufficient reduction of the eddy currents within the contact disk 1 and on the other hand to allow a Her ⁇ position of the contact disks in a simple manner.

Abstract

The aim of the invention is to further develop a contact disk (1) comprising a connecting surface (7) for soldering to a contact piece of a vacuum interrupter and comprising a contact surface (2), wherein slots (3) extend from an outer circumferential surface (4) into the contact disk (1), said contact disk having a simple and inexpensive design. This is achieved in that the slots (3) extend into the contact disk (1) in the axial direction from the contact surface (2) such that the connecting surface (7) remains completely intact.

Description

Beschreibung description
Kontaktscheibe für eine Vakuumschaltröhre Die Erfindung betrifft eine Kontaktscheibe mit einer Verbin¬ dungsfläche zum Verlöten mit einem Kontaktstück einer Vakuumschaltröhre sowie einer Kontaktfläche, wobei sich Schlitze von einer Außenumfangsfläche in die Kontaktscheibe hinein erstrecken . Contact disc for a vacuum interrupter, the invention relates to a contact disk with a Verbin ¬ edge surface for soldering to a contact piece of a vacuum interrupter and a contact surface, said slots of an outer peripheral surface in the contact disc extend into.
Eine derartige Kontaktscheibe ist aus der DE 199 10 148 C2 bekannt. Solche Kontaktscheiben werden beispielsweise bei RMF-Kontakten (Radialmagnetfeldkontakten) für Vakuumschaltröhren verwendet. Beim Trennen von Strömen entsteht im Inne- ren der Vakuumschaltröhre zwischen den Kontaktscheiben ein Lichtbogen, welcher auf Grund des radialen Magnetfeldes auf der Kontaktscheibe rotiert. Dadurch soll erreicht werden, dass der Lichtbogen nicht auf einer Stelle der Kontaktscheibe stehen bleibt, damit durch den Lichtbogen keine lokalen Schä- digungen der Kontaktscheibe entstehen. Die offenbarte Vakuumschaltröhre weist im Bereich zwischen Kontakt und Kontaktanschlussbolzen eine Dampfsperre auf, die auf der Rückseite des Kontaktes befestigt ist und den Durchtritt von Dampf durch die geschlitzten Kontakte verhindert. Such a contact disk is known from DE 199 10 148 C2. Such contact disks are used, for example, in RMF contacts (radial magnetic field contacts) for vacuum interrupters. When currents are separated, an arc occurs between the contact disks in the interior of the vacuum interrupter, which arc rotates on the contact disk due to the radial magnetic field. This is to ensure that the arc does not stop at one point of the contact disk, so that no local damage to the contact disk is caused by the arc. The disclosed vacuum interrupter has a vapor barrier in the area between the contact and contact pins, which is attached to the back of the contact and prevents the passage of steam through the slotted contacts.
Aufgabe der vorliegenden Erfindung ist es, eine Kontaktschei¬ be der eingangs genannten Art auszubilden, welche über einen einfachen und kostengünstigen Aufbau verfügt. Erfindungsgemäß gelöst wird dies bei einer Kontaktscheibe der eingangs genannten Art dadurch, dass sich die Schlitze in axialer Richtung von der Kontaktfläche in die Kontaktscheibe hinein derart erstrecken, dass die Verbindungsfläche voll¬ ständig erhalten ist. Object of the present invention is to form a Kontaktschei ¬ be of the aforementioned type, which has a simple and inexpensive construction. This is achieved according to the invention in a contact disk of the type mentioned above in that the slots extend in the axial direction from the contact surface into the contact disk in such a way that the connection surface is fully ¬ constantly obtained.
Mit anderen Worten erstrecken sich die Schlitze bezüglich der axialen Richtung oder der Dicke der Kontaktscheibe nicht, wie bei den aus dem Stand der Technik bekannten Kontaktscheiben vollständig durch die Kontaktscheibe hindurch, vielmehr ist die Verbindungsfläche nicht von den Schlitzen durchsetzt und bleibt damit vollständig erhalten, so dass durch die Kontakt¬ scheibe bzw. deren vollständig erhaltene Verbindungsfläche eine Dampfsperre für dahinter angeordnete Bauteile wie bei¬ spielsweise Kontaktanschlussbolzen gebildet ist. Dadurch werden diese Bauteile einerseits vor Bedampfung von bei einem Schaltvorgang entstehendem Material geschützt, und andererseits kann eine separate Dampfsperre, die mittels eigener Be- festigungsmittel wie Lötfolien oder ähnlichem befestigt werden muss, eingespart werden, so dass ein einfacher und kos¬ tengünstiger Aufbau gewährleistet ist. In other words, the slots do not extend with respect to the axial direction or the thickness of the contact disc, as in the contact discs known from the prior art completely through the contact disc, rather, the connection surface is not penetrated by the slots and thus remains intact, so that a vapor barrier for behind arranged components as in ¬ example, contact terminal bolt is formed by the contact ¬ disc or its fully obtained connection surface. Thus, these components are protected on the one hand, from deposition of nascent during a switching process material, and on the other hand, a separate vapor barrier, the fastening means by means of its own loading as solder foils or must be fixed like, can be saved, so that a simple and kos ¬ tengünstiger structure is ensured ,
In einer vorteilhaften Ausgestaltung der Erfindung beträgt eine Restdicke der Kontaktscheibe im Bereich der Schlitze zwischen 3 % und 25 % der Gesamtdicke. In an advantageous embodiment of the invention, a residual thickness of the contact disk in the region of the slots is between 3% and 25% of the total thickness.
Bei einer derartig bemessenen Restdicke der Kontaktscheibe ist einerseits eine Reduzierung von Wirbelströmen in ausrei- chender Weise gegeben, und andererseits ist eine derartigeWith a residual thickness of the contact disk dimensioned in this way, on the one hand a reduction of eddy currents is sufficiently given, and on the other hand such is
Kontaktscheibe mit solchen Schlitzen in einfacher Weise durch konturnahe Herstellungsverfahren wie beispielsweise Powder In ection Molding oder auch mit Werkzeugen zur Formgebung der Kontaktscheibe ermöglicht. Contact disc with such slots in a simple manner by konturnahe manufacturing methods such as Powder In ection Molding or with tools for shaping the contact disc allows.
Die Erfindung wird im Folgenden anhand der Zeichnung und eines Ausführungsbeispiels mit Bezug auf die beiliegenden Figu¬ ren näher erläutert. Es zeigen: Figur 1 eine dreidimensionale Ansicht eines Ausführungsbei¬ spiels einer erfindungsgemäßen Kontaktscheibe; The invention is explained in more detail below with reference to the drawing and an embodiment with reference to the accompanying Figu ¬ ren. It 1 shows a three dimensional view of an exemplary embodiment of a contact plate according to the invention;
Figur 2 eine Schnittansicht durch das Ausführungsbeispiel der erfindungsgemäßen Kontaktscheibe der Figur 1. 2 shows a sectional view through the embodiment of the contact disc according to the invention of Figure 1.
Figur 1 zeigt eine Kontaktscheibe 1, die zur Verwendung an einem Kontaktstück einer Vakuumschaltröhre (figürlich nicht dargestellt) vorgesehen ist und üblicherweise aus einem Kup- fer-Chrom-Material hergestellt ist. In der Figur 1 ist eine dreidimensionale Ansicht auf eine Kontaktfläche 2 der Kon¬ taktscheibe 1 dargestellt, wobei die Kontaktscheibe 1 über Schlitze verfügt, von denen exemplarisch ein Schlitz mit 3 bezeichnet ist, welche Schlitze sich von einem Außenumfang 4 der Kontaktscheibe 1 1-förmig in die Kontaktscheibe 1 hinein erstrecken. Die Schlitze 3 weisen sowohl im Bereich des Au- ßenumfanges 4, als auch im Innenbereich der Kontaktfläche 2 abgerundete Kanten 5 bzw. 6 auf, wobei durch die abgerundeten Kanten 5 bzw. 6 Feldüberhöhungen im Bereich der Schlitze reduziert werden sollen. Die Schlitze 3 in der Kontaktscheibe 1 erstrecken sich dabei nicht vollständig durch die Kontakt¬ scheibe 1 bezüglich einer axialen Richtung, sondern sind derart ausgebildet, dass eine der Kontaktfläche 2 gegenüberlie- gend befindliche Verbindungsfläche 7 nicht von den Schlitzen durchsetzt ist, sondern die Verbindungsfläche vollständig er¬ halten ist. 1 shows a contact disc 1, which is intended for use on a contact piece of a vacuum interrupter (not shown in the figure) and usually made of a copper fer chrome material is made. 1 shows a three dimensional view is shown on a contact surface 2 of the Kon ¬ timing disc 1, wherein the contact disc 1 has slots is exemplarily referred to a slot 3 of which, which slots extend from an outer periphery 4 of the contact plate 1 is 1-shaped extend into the contact disc 1 inside. The slots 3 have rounded edges 5 and 6 both in the area of the outer circumference 4 and in the inner area of the contact area 2, wherein the rounded edges 5 and 6 are intended to reduce field peaks in the area of the slots. The slots 3 in the contact disc 1 is not thereby extend completely through the contact ¬ disk 1 with respect to an axial direction, but are designed such that one of the contact surface 2 connecting surface 7 gegenüberlie- quietly located is not traversed by the slots, but the connecting surface completely he ¬ hold is.
Figur 2 zeigt eine Schnittansicht durch die Kontaktscheibe 1 der Figur 1 entlang der in der Figur 1 mit II bezeichnetenFigure 2 shows a sectional view through the contact disk 1 of Figure 1 along the designated in Figure 1 with II
Linie und zeigt die Kontaktfläche 2 und die Verbindungsfläche 7 sowie die Schlitze 3, welche sich von der Kontaktfläche 2 in die Kontaktscheibe 1 hinein erstrecken, derart, dass die Verbindungsfläche 7 nicht von den Schlitzen 3 durchsetzt ist. Eine Restdicke d der Kontaktscheibe 1 im Bereich der Schlitze 3 beträgt dabei im Verhältnis zur Gesamtdicke D der Kontakt¬ scheibe 1 zwischen 3 % und 25 % der Gesamtdicke D. Eine der¬ artige Restdicke d der Kontaktscheibe im Bereich der Schlitze 3 hat sich als besonders vorteilhaft erwiesen, um einerseits eine ausreichende Reduzierung der Wirbelströme innerhalb der Kontaktscheibe 1 zu gewährleisten und andererseits eine Her¬ stellung der Kontaktscheiben in einfacher Weise zu ermöglichen . Bezugs zeichenliste Line and shows the contact surface 2 and the connecting surface 7 and the slots 3, which extend from the contact surface 2 in the contact disc 1 in such a way that the connecting surface 7 is not penetrated by the slots 3. A residual thickness d of the contact disk 1 in the region of the slots 3 is in relation to the total thickness D of the contact ¬ disc 1 between 3% and 25% of the total thickness D. Such a ¬ like residual thickness d of the contact disc in the slots 3 has been particularly proven advantageous on the one hand to ensure a sufficient reduction of the eddy currents within the contact disk 1 and on the other hand to allow a Her ¬ position of the contact disks in a simple manner. Reference sign list
1 Kontaktscheibe1 contact disc
2 Kontaktfläche 3 Schlitz 2 contact surface 3 slot
4 Außenumfang  4 outer circumference
5 abgerundete Kanten 5 rounded edges
6 abgerundete Kanten6 rounded edges
7 Verbindungsfläche d Restdicke 7 bonding surface d residual thickness
D Gesamtdicke D total thickness

Claims

Patentansprüche claims
1. Kontaktscheibe (1) mit einer Verbindungsfläche (7) zum Be¬ festigen an einem Kontaktstück einer Vakuumschaltröhre sowie einer Kontaktfläche (2), wobei sich Schlitze (3) von einer Außenumfangsfläche (4) in die Kontaktscheibe (1) hinein erstrecken, 1. contact disc (1) having a connection surface (7) for fastening to a contact piece of a vacuum interrupter and a contact surface (2), wherein slots (3) extend from an outer peripheral surface (4) into the contact disc (1),
d a d u r c h g e k e n n z e i c h n e t, d a s s sich die Schlitze (3) in axialer Richtung von der Kontaktflä- che (2) in die Kontaktscheibe (1) hinein derart erstrecken, dass die Verbindungsfläche (7) vollständig erhalten ist. In the axial direction, the slots (3) extend from the contact surface (2) into the contact disk (1) in such a way that the connecting surface (7) is completely retained.
2. Kontaktscheibe (1) nach Anspruch 1, 2. Contact disc (1) according to claim 1,
d a d u r c h g e k e n n z e i c h n e t, d a s s eine Restdicke (d) der Kontaktscheibe (1) im Bereich derd a d u r c h e k e n e i n e, that is, a residual thickness (d) of the contact disc (1) in the region of
Schlitze (3) zwischen 3 % und 25 % der Gesamtdicke (D) be¬ trägt . Slots (3) between 3% and 25% of the total thickness (D) be ¬ contributes.
PCT/EP2012/052081 2011-02-16 2012-02-08 Contact disk for a vacuum interrupter WO2012110369A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110004212 DE102011004212B3 (en) 2011-02-16 2011-02-16 Contact disk for a vacuum interrupter
DE102011004212.1 2011-02-16

Publications (1)

Publication Number Publication Date
WO2012110369A1 true WO2012110369A1 (en) 2012-08-23

Family

ID=45757391

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/052081 WO2012110369A1 (en) 2011-02-16 2012-02-08 Contact disk for a vacuum interrupter

Country Status (2)

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DE (1) DE102011004212B3 (en)
WO (1) WO2012110369A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53133170U (en) * 1977-03-30 1978-10-21
DE3533890A1 (en) * 1985-09-23 1987-04-02 Siemens Ag Vacuum switching tube for contactor application
JPH10233145A (en) * 1997-02-17 1998-09-02 Toshiba Corp Vacuum valve
DE19910148C2 (en) 1999-02-26 2001-03-22 Siemens Ag Vacuum interrupter with annular isolator
US20010047981A1 (en) * 2000-05-02 2001-12-06 Schneider Electric Industries Sa. Vacuum cartridge in particular for an electrical protection apparatus such as a switch or a circuit breaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614361A (en) * 1969-09-10 1971-10-19 Allis Chalmers Mfg Co Contact with low-cathode drop material insert
DE3610242A1 (en) * 1986-03-26 1987-10-01 Siemens Ag Contact arrangement for vacuum switches having an axial magnetic field, and a method for producing the associated contact elements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53133170U (en) * 1977-03-30 1978-10-21
DE3533890A1 (en) * 1985-09-23 1987-04-02 Siemens Ag Vacuum switching tube for contactor application
JPH10233145A (en) * 1997-02-17 1998-09-02 Toshiba Corp Vacuum valve
DE19910148C2 (en) 1999-02-26 2001-03-22 Siemens Ag Vacuum interrupter with annular isolator
US20010047981A1 (en) * 2000-05-02 2001-12-06 Schneider Electric Industries Sa. Vacuum cartridge in particular for an electrical protection apparatus such as a switch or a circuit breaker

Also Published As

Publication number Publication date
DE102011004212B3 (en) 2012-04-26

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