EP2915174B1 - Dispositif de commutation à courant continu - Google Patents

Dispositif de commutation à courant continu Download PDF

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Publication number
EP2915174B1
EP2915174B1 EP13789741.9A EP13789741A EP2915174B1 EP 2915174 B1 EP2915174 B1 EP 2915174B1 EP 13789741 A EP13789741 A EP 13789741A EP 2915174 B1 EP2915174 B1 EP 2915174B1
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EP
European Patent Office
Prior art keywords
arc
switching
switching device
quenching
splitter
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.)
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Application number
EP13789741.9A
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German (de)
English (en)
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EP2915174A1 (fr
Inventor
Hermann HAIDER
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 Austria GmbH
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Eaton Industries Austria GmbH
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Publication date
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Publication of EP2915174A1 publication Critical patent/EP2915174A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • 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
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to a DC switching device according to the preamble of claim 1.
  • the EP 892 415 A2 describes a DC switching device with an arc quenching chamber with identically formed quenching plates, each having a spiral shape in plan view to produce a Lorentz force.
  • the EP 619 592 B1 describes a switching device with a conductor loop on fixed contacts, which causes an electrodynamic force in case of short circuit in order to accelerate the contact opening.
  • the object of the invention is therefore to provide a DC switching device of the type mentioned, with which the mentioned disadvantages can be avoided, and with which DC currents high power can be switched safely.
  • a DC switching device which has a high switching capacity at DC currents, and which is therefore suitable for switching DC currents of high power.
  • Such a DC switching device has a high level of security, in particular against thermal destruction.
  • the Fig. 1 to 5 show a particularly preferred embodiment of a DC switching device 1, or parts of an arc extinguishing arrangement 6 of such a DC switching device 1, wherein the DC switching device 1 has at least one electrical input 2 and at least one electrical output 3, and at least a first switching contact 4 and a movable switching bridge 20, wherein the DC switching device 1 further comprises an arc extinguishing arrangement 6, wherein the arc extinguishing arrangement 6 comprises at least a first arc quenching chamber 7, which has a plurality of quenching plates 9, wherein at least a first quenching plate 27 of the quenching plates 9 so shaped, in particular bent such that - caused by a switching operation - arcs 11, in the first arc quenching chamber 7, a Lorentz force 12 in the direction of the quenching plates 9 acts.
  • a DC switching device 1 which has a high switching capacity at DC currents, and which is therefore suitable for switching DC currents of high power.
  • Such a DC switching device 1 has a high level of security, in particular against thermal destruction.
  • the subject invention relates to switching devices, which are provided for the switching of direct currents and specially designed.
  • the invention relates to DC switching devices 1, which for the intended switching of high voltages in the range of several hundred volts, about 600V operating voltage, and currents in the two-digit ampere range provided and designed.
  • An objective DC switching device 1 has an electrical input 2 and an electrical output 3, which are preferably designed as screw terminals, as well as in Fig. 1 shown. Furthermore, the DC switching device 1 has an insulating material housing.
  • the DC switching device 1 has in its illustrated and preferred embodiment, a single switching path, but a double interruption of this single switching path is provided. It is preferably provided that the DC switching device 1 next to the first switching contact 4 further comprises a second switching contact 5, which are both fixed to the housing, and can be electrically connected by a movable switching bridge 20, whereby an electrically conductive current path from the input 2 to the output 3 is formed becomes. It is provided that the position of the switching bridge 20 is manually controlled by the shift lever 19. It is preferably provided that the shift lever 19 acts on the switching bridge 20 via a snap-action switching mechanism in order to achieve a sudden opening and closing of the switching path. It can also be provided to carry out the subject DC switching device 1 as a so-called.
  • Self-switch which has one or more triggers, such as an overcurrent release and / or a short-circuit release. Furthermore, it is preferably provided that the DC switching device 1 has a switching mechanism, in particular when the same is carried out as a self-switch.
  • the current flow through the DC switching device 1 shown is from the electrical input 2 to the first switching contact 4, from this via the switching bridge 20 to the second switching contact 5 and from there to the latter electrical output 3.
  • the switching bridge 20 has two, designed as electrical contacts areas to contact with the first switching contact 4 and the second switching contact 5, this is referred to in the diction of the subject application only as a switching bridge 20. It can also be provided that also the first switching contact 4 and the second switching contact 5 are designed as movable electrical contacts.
  • the DC switching device 1 further comprises an arc extinguishing arrangement 6 in order to extinguish arcs 11, which arise in the course of a switching operation, to extinguish. This is to prevent that due to so-called “stationary” arcs 11 continues to flow through the DC switching device 1 and also due to the thermal effect of the arcs 11 damage to the DC switching device 1 takes place. Such arcs 11 occur in particular during a switch-off. "Switching off” here refers to the separation of the switching bridge 20 of the first and second electrical switching contact 4, 5 for preventing a current flow through the DC switching device 1. The physical relationships in the ignition of an arc 11 are described in the law of induction.
  • Fig. 2 shows a preferred embodiment of the arc extinguishing arrangement 6, in forming the DC switching device with a first and a second switching contact 4, 5.
  • the first switching contact 4 and the second switching contact 5 are shown, but these are shown without any further contacting, only to illustrate their arrangement relative to the respective arc extinguishing chambers 7, 8. The same applies to the also in Fig. 2 shown switching bridge 20 to.
  • the arc extinguishing arrangement 6 has a first arc quenching chamber 7 and a second arc quenching chamber 8. It is preferably provided that the first arc quenching chamber 7 is assigned to the first switching contact 4, and that the second arc quenching chamber 8 is assigned to the second switching contact 5, wherein also embodiments are provided with only a first arc quenching chamber 7, if no second switching contact 5 is present.
  • the term "assigned" refers in this context to an arrangement of the relevant arc quenching chamber 7, 8 with respect to the specified switching contact 4, 5 in such a way that an emerging at the switching contact 4, 5 arc 11 its way into or to the relevant arc quenching chamber 7, 8 finds.
  • Fig. 2 shows the two switching contacts 4, 5 in Area of the respective arc quenching chamber 7, 8.
  • first arc quenching chamber 7 and the second arc quenching chamber 8 are arranged parallel to each other in the DC switching device 1, as in Fig. 2 shown.
  • first arc quenching chamber 7 and the second arc quenching chamber 8 a plurality of quenching plates 9 are arranged in each case.
  • the quenching plates 9 are preferably arranged substantially normal to the arc guide rail 18, wherein between the side by side mounted quenching plates 9 is in each case a distance.
  • at least one quenching plate 9 of the first arc quenching chamber 7 is electrically conductively connected to a quenching plate 9 of the second arc quenching chamber 8, provided that a first and a second arc extinguishing chamber 7, 8 are provided.
  • the quenching plates 9 are preferably formed from an electrically and magnetically conductive metal, preferably comprising iron. Furthermore, it is preferably provided that the quenching plates 9 are formed substantially identical to each other. In particular, it may be provided that individual quenching plates 9 are formed larger than the vast majority of quenching plates 9. These quenching plates 9, which protrude from the overall composite of the quenching plates 9, in particular in a region next to the path of movement of the switching bridge 20 are arranged.
  • At least a first quenching plate 27 of the quenching plates 9 is shaped, in particular bent such that - caused by a switching process - arcs 11, in the first arc quenching chamber 7, a Lorentz force 12 in the direction of the quenching plates 9 acts.
  • the first quenching plate 27 is here a quenching plate 9, which is formed differently from the other quenching plates 9. In this way, the - caused by a switching process - arcs 11 are driven in the direction of the quenching plates 9, whereby the energy of the arc 11 can dissipate quickly.
  • the first quenching plate 27 delimit a quenching plate stack of the quenching plates 9 of the first arc quenching chamber 7.
  • the first quenching plate 27 is arranged at one end of the quenching plate stack of the quenching plates 9.
  • the first quenching plate 27 may in particular be part of the quenching plate stack of the quenching plates 9.
  • the first arc splitter 27 is arranged at a first end of the splitter stack of quenching plates 9, which first end is arranged adjacent to a position switching bridge 20, which position assumes the switching bridge 20, when the switching bridge 20 of the switch contacts 4, 5 is disconnected. Thereby, the arc 11 can skip well on the first arc splitter 27, wherein the arc 11 is formed immediately after this skipping between the switching contact 4,5 and the first arc splitter 27.
  • the first quenching plate 27 is arranged adjacent to a movement path of the switching bridge 20.
  • the first quenching plate 27 is arranged in the arc extinguishing arrangement 6, in particular in the first arc quenching chamber 7 and or the second arc quenching chamber 8 to a movement path of the switching bridge 20.
  • the first quenching plate 27 has a receptacle 30, and that a contact abutment part 31 made of insulating material is arranged in the receptacle 30.
  • the contact stop member 31 is in this case provided in particular a stop for form the switching bridge 20, so that it can be arranged immediately adjacent to the first splitter plate 27 in the open state.
  • the first arc splitter 27 is U-shaped. Due to the u-shaped configuration can, as in Fig. 4 shown, a particularly simple Lorentz force 12 are caused in the direction of the quenching plates 9. Furthermore, the local field strength can be increased by a U-shaped curved surface. In this case, the first quenching plate 27 can be divided by the U-shaped bent region into a first leg 28 and a second leg 29.
  • a first leg 28 of the U-shaped first quenching plate 27 is conductively connected to a part of the DC switching device 1 which is at an electrical potential.
  • a current flow of the arc 11 through the first arc splitter 27 can be derived.
  • it can be dispensed with the additional use of magnets, since the magnetic field, which can be generated by the current flow of the Lichbogens 11 itself, the Lorentz force 12.
  • Another advantage is that the stronger the current intensity of the arc 11, and therefore the more dangerous the arc 11, the strength of the Lorentz force 12 also increases, and the arc 11 can be deleted quickly and reliably in the quenching plates 9.
  • the first leg 28 of the U-shaped first quenching plate 27 is conductively connected to the electrical output 3.
  • the second leg 29 of the U-shaped first quenching plate 27 is arranged substantially parallel to an adjacent arranged quenching plate 9.
  • a plane-parallel gap 32 between the second leg 29 and an adjacent arranged quenching plate 9 are formed.
  • the arc 11 is pulled by the Lorentz force 12 in the gap 32, whereby the energy of the arc 11 can be well dissipated.
  • Such a plane-parallel gap 32 can in particular cause a propagation direction 25 of the arc 11 away from the switching contacts 4, 5.
  • first leg 28 and the second leg 29 of the U-shaped first quenching plate 27 are arranged substantially parallel to each other.
  • a particularly strong Lorentz force 12 are formed in the direction of the quenching plates 9.
  • Fig. 1 shows a particularly preferred embodiment of a DC switching device 1, according to which a DC switching device 1 can be provided with at least one electrical input 2 and at least one electrical output 3, and at least a first switching contact 4 and a movable switching bridge 20, wherein the DC switching device 1 further a Arc quenching assembly 6, wherein the arc extinguishing assembly 6 has at least a first arc quenching chamber 7, which has a plurality of quenching plates 9, wherein the first quenching plate 27 is U-shaped, wherein the first leg 28 of the U-shaped first quenching plate 27 conductively connected to the electrical output.
  • Fig. 4 shows the preferred embodiment in a first state of the arc 11, wherein one end of the arc 11 of the switching bridge 20, which is in particular potential-free, jumps on the first arc splitter 27, which is conductively connected to the electrical output 3.
  • the first arc splitter 27 which is conductively connected to the electrical output 3.
  • the current flow in the u-shaped region and in the first leg 28 in this case a magnetic field is generated, which causes a Lorentz force 12 in the direction of the quenching plates 9, and in particular away from the switching bridge 20.
  • Fig. 5 essentially shows Fig. 4 in a second state of the arc 11, which second state is the first state in Fig. 4 essentially immediately follows. Due to the penetration of the arc 11 into the gap 32 between the second leg 29 and the adjacent splitter plate 9, a current flow in the second leg 29 forms, wherein the path of the current flow in the second leg 29 increases with increasing penetration depth of the arc 11 into the gap 32. This further strengthens the Lorentz force 12, which drives the arc into the quenching plates, as a result of which a particularly rapid dissipation of the arc 11 can be achieved.
  • the arc extinguishing arrangement 6 has a second arc quenching chamber 8, comprising a plurality of quenching plates 9, and that in the second arc quenching chamber 8 also a first quenching plate 27 is arranged.
  • the first quenching plate 27 of the second arc quenching chamber 8 may be formed equal to the first quenching plate 27 of the first arc quenching chamber 7.
  • the DC switching device 1 has at least one arc rail 18, which arc rail 18 is conductively connected to the first switching contact 4, and which arc rail 18 is disposed opposite the quenching plates 9 in the DC switching device 1.
  • the arc runner 18 is part of the first arc extinguishing chamber 7.
  • the arc 11 can be offered an electrotechnically attractive way. By the arc guide rail 18, the arc 11 is pulled away in a direction 26 from the first switching contact 4, which sweeps across the quench stack away, and thereby each loses energy.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (8)

  1. Appareil de commutation en courant continu (1) avec au moins une entrée électrique (2) ainsi qu'au moins une sortie électrique (3), ainsi qu'avec au moins un premier contact de commutation (4) et un pont de commutation mobile (20), lequel appareil de commutation en courant continu (1) comporte en outre un dispositif d'extinction d'arc (6), lequel dispositif d'extinction d'arc (6) comporte au moins une première chambre d'extinction d'arc (7) qui comporte plusieurs tôles d'extinction (9), caractérisé en ce qu'une seule première tôle d'extinction (27) parmi les tôles d'extinction (9) est conçue en forme de U et en ce qu'une première branche (28) de la première tôle d'extinction (27) en forme de U est reliée de manière conductrice à la sortie électrique (3), une force de Lorentz (12) en direction des tôles d'extinction (9) agissant alors sur des arcs (11) - provoqués par une opération de commutation - dans la première chambre d'extinction d'arc (7).
  2. Appareil de commutation en courant continu (1) selon la revendication 1, caractérisé en ce qu'une deuxième branche (29) de la tôle d'extinction (27) en forme de U est agencée globalement parallèlement à une tôle d'extinction (9) agencée au voisinage.
  3. Appareil de commutation en courant continu (1) selon la revendication 2, caractérisé en ce que la première branche (28) et la deuxième branche (29) de la première tôle d'extinction (27) en forme de U sont agencées globalement parallèlement l'une à l'autre.
  4. Appareil de commutation en courant continu (1) selon l'une des revendications 1 à 3, caractérisé en ce que la première tôle d'extinction (27) délimite une pile de tôles d'extinction des tôles d'extinction (9) de la première chambre d'extinction d'arc (7).
  5. Appareil de commutation en courant continu (1) selon l'une des revendications 1 à 4, caractérisé en ce que la première tôle d'extinction (27) est agencée de manière adjacente à une trajectoire de déplacement du pont de commutation (20).
  6. Appareil de commutation en courant continu (1) selon l'une des revendications 1 à 5, caractérisé en ce que la première tôle d'extinction (27) comporte un logement (30), et en ce qu'une partie de butée de contact (31) en une matière isolante est agencée dans le logement (30).
  7. Appareil de commutation en courant continu (1) selon l'une des revendications 1 à 6, caractérisé en ce qu'il comporte un deuxième contact de commutation (5) et en ce que, pour établir le chemin conducteur de courant de l'entrée (2) à la sortie (3), le premier contact de commutation (4) et le deuxième contact de commutation (5) sont reliés de manière conductrice au moyen du pont de commutation (20).
  8. Appareil de commutation en courant continu (1) selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif d'extinction d'arc (6) comporte une deuxième chambre d'extinction d'arc (8), comprenant plusieurs tôles d'extinction (9), et en ce qu'une première tôle d'extinction (27) est également agencée dans la deuxième chambre d'extinction d'arc (8).
EP13789741.9A 2012-10-31 2013-10-31 Dispositif de commutation à courant continu Active EP2915174B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210110411 DE102012110411A1 (de) 2012-10-31 2012-10-31 Gleichstromschaltgerät
PCT/EP2013/072805 WO2014068054A1 (fr) 2012-10-31 2013-10-31 Dispositif de commutation à courant continu

Publications (2)

Publication Number Publication Date
EP2915174A1 EP2915174A1 (fr) 2015-09-09
EP2915174B1 true EP2915174B1 (fr) 2017-04-26

Family

ID=49582719

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Application Number Title Priority Date Filing Date
EP13789741.9A Active EP2915174B1 (fr) 2012-10-31 2013-10-31 Dispositif de commutation à courant continu

Country Status (6)

Country Link
EP (1) EP2915174B1 (fr)
CN (1) CN104813428B (fr)
BR (1) BR112015009675A2 (fr)
DE (1) DE102012110411A1 (fr)
RU (1) RU2015120568A (fr)
WO (1) WO2014068054A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111341615B (zh) * 2020-03-26 2021-12-14 贵州泰永长征技术股份有限公司 一种浮动式静触头组件装置结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2025188A (en) * 1987-04-21 1990-02-01 Circuit Breaker Industries Limited Circuit breaker arc-extinguishing plates
US5004874A (en) * 1989-11-13 1991-04-02 Eaton Corporation Direct current switching apparatus
JPH06196079A (ja) * 1992-12-25 1994-07-15 Mitsubishi Electric Corp 開閉器
FR2703821B1 (fr) * 1993-04-07 1995-05-12 Merlin Gerin Disjoncteur électrique à répulsion électrodynamique des contacts et à chambres de coupure double.
US5866864A (en) * 1997-07-14 1999-02-02 Eaton Corporation Electric current switching apparatus with arc spinning extinguisher
DE20105432U1 (de) * 2001-03-28 2002-09-26 Schaltbau GmbH, 81677 München Blasung bei AC-Betrieb
CN201877321U (zh) * 2010-11-29 2011-06-22 西安交通大学 一种提高低压电器开断性能的灭弧装置

Also Published As

Publication number Publication date
EP2915174A1 (fr) 2015-09-09
WO2014068054A1 (fr) 2014-05-08
RU2015120568A (ru) 2016-12-20
BR112015009675A2 (pt) 2017-07-04
CN104813428A (zh) 2015-07-29
DE102012110411A1 (de) 2014-05-15
CN104813428B (zh) 2018-03-20

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