EP2573783B1 - Löschkammervorrichtung für elektromagnetische Schaltgeräte - Google Patents

Löschkammervorrichtung für elektromagnetische Schaltgeräte Download PDF

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Publication number
EP2573783B1
EP2573783B1 EP11182095.7A EP11182095A EP2573783B1 EP 2573783 B1 EP2573783 B1 EP 2573783B1 EP 11182095 A EP11182095 A EP 11182095A EP 2573783 B1 EP2573783 B1 EP 2573783B1
Authority
EP
European Patent Office
Prior art keywords
panel insert
resilient
arc
insert
quenching chamber
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.)
Active
Application number
EP11182095.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2573783A1 (de
Inventor
Bernhard Rösch
Alexander Spies
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
Priority to EP11182095.7A priority Critical patent/EP2573783B1/de
Priority to BR102012023813A priority patent/BR102012023813B8/pt
Priority to KR1020120105178A priority patent/KR101626390B1/ko
Priority to CN201210355250.8A priority patent/CN103117197B/zh
Publication of EP2573783A1 publication Critical patent/EP2573783A1/de
Application granted granted Critical
Publication of EP2573783B1 publication Critical patent/EP2573783B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H9/346—Details concerning the arc formation chamber
    • 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
    • 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
    • H01H9/345—Mounting of arc chutes
    • 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
    • H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly
    • 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
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber

Definitions

  • the invention relates to a Löschhuntvorraum for electromagnetic switching devices, in particular for circuit breaker with a splitter stack and an adjacent Blendenindi, and with a contact slide device with movable contact pieces, which are positioned opposite to Festschalt congressen.
  • Circuit-breakers in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.
  • switching device with splitter stack and aperture insert is in the EP-A-1298687 disclosed.
  • the task of the circuit breaker is to protect downstream systems, in particular three-phase motors, from damage caused by overload or short circuit.
  • the circuit breaker should switch off these currents in conjunction with the network protection devices. If gas is between the two poles, it is ionized by the flashover with a correspondingly high voltage difference between the poles, and a self-sustaining gas discharge is formed, which is also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch.
  • circuit breakers are designed so that the arc produced when opening the switch contacts quickly and without damage of the switch cleared and thus the current flow is interrupted.
  • a particular problem with circuit breakers with high switching capacity, especially with up to 100 kA at a rated current up to 80 A is that with such a large short circuits, the loads on the chamber walls, that is, in particular on the lower part of the circuit breaker, due to the large Pressure development is very high.
  • the housing walls can bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.
  • Circuit breakers with a high switching capacity are subject to a high chamber pressure of up to 7.5 bar in the event of short circuits, which means an equally high plasma output. Even gap widths of 0.1 to 0.2 mm are sufficient to allow plasma to escape from the given paths. This also applies to the splitter stack and the panel insert, which lie against each other. Another problem with high switching operations is the position of diaphragm insert and splitter stack to each other. It must be ensured that both elements are in such a way that the paths for plasma exchange do not overlap one another. In addition, the cross-sectional transition between splitter stack and Blendeninate previously abruptly from a large cross section to a small. This results in turbulence, which in turn adversely affect the arc.
  • the object of the present invention is to provide a quenching chamber device having improved high-speed switching characteristics.
  • the panel insert according to the invention is preferably parallelepiped-shaped with two parallel side walls and two side walls connecting the two side walls.
  • the aperture insert has an upper side and a lower side.
  • a cap is formed, which is formed for example for receiving a Festschalt ceremoniess.
  • spacers are arranged, which protrude from the other two side walls arranged parallel to each other and allow optimal positioning of the aperture insert including quenching plates in the switching device.
  • slits lying parallel to one another are preferably arranged, which form the channels for an ordered plasma discharge.
  • two resilient contours are preferably formed on the side wall with slots which run down parallel to the slots on the side wall.
  • the resilient contours are preferably L-shaped or wedge-shaped with two legs, wherein the one leg is formed as an extension of the side wall and the other leg is at 90 ° to the first leg or to the side wall.
  • the resilient contours are preferably arranged to the left and right of the slots and divided into preferably three subregions, wherein each two subregions are interconnected by a third portion, so that overall results in a threading form or a wedge shape for a resilient contour.
  • the resilient contours 12, 13 on the panel insert 1 cause the panel insert 1 is pressed firmly between the housing wall of the electromagnetic switching device and the splitter stack.
  • panel insert and splitter stack are designed to latch together.
  • a detent between the aperture insert and splitter stack two functions are fulfilled. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours.
  • the detent may be in the form of locking knobs and recess.
  • the invention provides that from the panel insert to the quenching plates, a flowing cross-sectional transition is formed.
  • the fluently formed cross-sectional transition means that turbulences are avoided by this aerodynamic design. There is a clean purging of the plasma and not the usual turbulence scattered blow, whereby the risk of rollover between the individual phases increases.
  • the extinguishing chamber device for electromagnetic switching devices, in particular for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching capacities with a high chamber internal pressure are possible.
  • the structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack. As a result, a flashover between two adjacent splitter plate channels is prevented.
  • Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.
  • Fig. 1 shows a first embodiment of a panel insert 1 according to the invention, which is preferably cuboidal, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5.
  • the panel insert 1 has a top 6 and a bottom 7 on.
  • an attachment 8 is formed, which is formed for example for receiving a Festschalt Federationes.
  • the resilient contours 12, 13 are preferably L-shaped with two legs 14, 15, wherein the leg 14 is formed as an extension of the side wall 4 and the leg 15 is at 90 ° to the leg 14 and the side wall 4.
  • the resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three subregions 16, 17, 18, wherein the subregions 16 and 18 via the portion 17 with each other are connected and overall preferably a threading form for a resilient contour 12, 13 results.
  • the resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.
  • Fig. 2 is a second embodiment of an aperture insert 1 according to the invention shown with detent.
  • the side wall 5 is shown with the slots 11 forming the channels for an ordered plasma exchange.
  • a locking knob 19 is shown on the side wall 5 in the vicinity of the top 6 with the attachment 8 .
  • the locking knob 19 serves to connect the panel insert 1 latching with the splitter stack.
  • the detent ensures two functions. On the one hand, the position of the two parts of the panel insert 1 and splitter stack is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the locking knobs 19 are also from the Fig. 3 showing a front view according to the side wall 5.
  • Fig. 4 an arrangement of an aperture insert 1 according to the invention and an adjacent splitter plate 20 is shown.
  • the dotted surface 21 represents the previous cross-sectional transition, which led to turbulence 23 through the constriction 22 and allowed no defined plasma blowing.
  • the turbulence 23 creates a scattered discharge of the plasma, which increases the risk of rollover between the individual phases.
  • the constriction 22 is dispensed with, thereby achieving a flowing cross-sectional transition which avoids turbulences due to this aerodynamic design. There is thus a clean purging of the plasma.
  • Fig. 5 the perspective view of the flow-optimized Ausblaskanäle 24 forth.
  • Fig. 5 the perspective view of the flow-optimized Ausblaskanäle 24 forth.
  • FIG. 6 shows a further embodiment of a panel insert 1 according to the invention, which is also preferably cuboid, with two parallel opposite side walls 2, 3 and two the two side walls 2, 3 connecting side walls 4, 5.
  • the panel insert 1 has a top 6 and a Bottom 7 on.
  • At the top 6 of the attachment 8 is formed, which is formed for example for receiving a Festschalt Federationes.
  • the resilient contours 12, 13 are preferably arranged on the left and right of the slots 11 and divided into preferably three partial areas 16, 17, 18, wherein the partial areas 16 and 18 are connected to each other via the portion 17 and a total preferably a wedge shape for each one resilient contour 12, 13 results, which tapers towards the bottom 7.
  • the resilient contours 12, 13 on the panel insert cause the panel insert 1 is always firmly pressed between the housing wall of the electromagnetic switching device and the splitter stack.
  • the extinguishing chamber device for electromagnetic switching devices, especially for circuit breakers, is characterized by the fact that structural changes to the panel insert also high switching performance with a high chamber internal pressure are possible.
  • the structural changes include resilient contours on the panel insert, which are designed such that the panel insert is always fixed between Housing wall of the electromagnetic switching device and the splitter stack is pressed. As a result, a flashover between two adjacent splitter plate channels is prevented.
  • Another structural change consists in the detent between the aperture insert and splitter stack, which ensures two functions. On the one hand the position of the two parts is fixed to each other, so that there is no overlap of the slot contours. On the other hand, the detent provides a clear feedback during the assembly process.
  • the third structural measure on the panel insert is that the cross-sectional transition is designed to be fluid, so that turbulences are avoided by this aerodynamic design. There is thus a clean purging of the plasma.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Diaphragms And Bellows (AREA)
EP11182095.7A 2011-09-21 2011-09-21 Löschkammervorrichtung für elektromagnetische Schaltgeräte Active EP2573783B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11182095.7A EP2573783B1 (de) 2011-09-21 2011-09-21 Löschkammervorrichtung für elektromagnetische Schaltgeräte
BR102012023813A BR102012023813B8 (pt) 2011-09-21 2012-09-20 Dispositivo de câmara de extinção para um aparelho de comutação eletromagnético
KR1020120105178A KR101626390B1 (ko) 2011-09-21 2012-09-21 전자기 스위치 기어를 위한 아킹 챔버 장치
CN201210355250.8A CN103117197B (zh) 2011-09-21 2012-09-21 用于电磁开关装置的灭弧室装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182095.7A EP2573783B1 (de) 2011-09-21 2011-09-21 Löschkammervorrichtung für elektromagnetische Schaltgeräte

Publications (2)

Publication Number Publication Date
EP2573783A1 EP2573783A1 (de) 2013-03-27
EP2573783B1 true EP2573783B1 (de) 2017-03-08

Family

ID=44651469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182095.7A Active EP2573783B1 (de) 2011-09-21 2011-09-21 Löschkammervorrichtung für elektromagnetische Schaltgeräte

Country Status (4)

Country Link
EP (1) EP2573783B1 (pt)
KR (1) KR101626390B1 (pt)
CN (1) CN103117197B (pt)
BR (1) BR102012023813B8 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112014006734A5 (de) * 2014-06-12 2017-05-11 Siemens Aktiengesellschaft Löschkammervorrichtung für ein elektromagnetisches Schaltgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149019C1 (de) * 2001-09-28 2003-06-18 Siemens Ag Lichtbogenlöscheinrichtung für Niederspannungs-Schaltgeräte
DE102005043396A1 (de) * 2005-09-08 2007-03-15 Siemens Ag Auswechselbare Löschblechkassette für einen Leistungsschalter sowie Leistungsschalter mit auswechselbarer Löschblechkassette
CN101540248B (zh) * 2009-03-30 2011-04-13 常熟开关制造有限公司(原常熟开关厂） 低压断路器
CN102129925B (zh) * 2011-04-02 2012-12-05 常熟开关制造有限公司(原常熟开关厂） 具有消游离装置的断路器灭弧室

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
BR102012023813B8 (pt) 2021-12-07
CN103117197A (zh) 2013-05-22
BR102012023813A2 (pt) 2014-12-16
KR101626390B1 (ko) 2016-06-01
KR20130031810A (ko) 2013-03-29
BR102012023813B1 (pt) 2020-09-29
EP2573783A1 (de) 2013-03-27
CN103117197B (zh) 2016-05-25

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