EP1225610A1 - Abbrandschaltanordnung für einen Leistungsschalter - Google Patents
Abbrandschaltanordnung für einen Leistungsschalter Download PDFInfo
- Publication number
- EP1225610A1 EP1225610A1 EP01810058A EP01810058A EP1225610A1 EP 1225610 A1 EP1225610 A1 EP 1225610A1 EP 01810058 A EP01810058 A EP 01810058A EP 01810058 A EP01810058 A EP 01810058A EP 1225610 A1 EP1225610 A1 EP 1225610A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- burn
- arrangement according
- inlet opening
- switching arrangement
- 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.)
- Granted
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
- H01H33/982—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow in which the pressure-generating arc is rotated by a magnetic field
Definitions
- the invention relates to an erosion switching arrangement according to Preamble of claim 1, which is particularly for the Use in circuit breakers, which are suitable for opening and closing Switching off operating and overcurrents in systems for the Serve generation and distribution of electrical energy.
- EP-A-0 146 671 is a circuit breaker with a Burn-up switching arrangement of the generic type known, at when switching off high currents in the arc room resulting gas pressure to increase the blowing effect is being used.
- the internal cavity of the a, movable, tubular contact piece via radial Exhaust openings with a containing an extinguishing gas Pump chamber connected by a with the switching piece with movable cylinder and a fixed piston set is and with separate contact pieces over Blow ducts in connection with the arc room.
- the invention is based on the object, a Burn-up switching arrangement of the type mentioned at the beginning create that at comparatively simple and weight-saving dimensioning of your components is to switch off even very high currents.
- the burn-up switching arrangement shown in FIGS. 1-3 of a otherwise not shown circuit breaker corresponds with the exception of the training of the mobile Switch pin with regard to the structure and arrangement of the components that shown in Fig. 3a of DE-A-198 16 505 Consumable.
- the erosion switching arrangement 1 has two in the direction of one Switch axis 2 aligned contact pieces 3 and 4.
- the Contact piece 3 is an axially movable switching pin which by means of a switch drive, not shown in Direction of arrow A between an on position (Fig. 1) and an off position (Fig. 3) is.
- the other contact 4 is as a fixed Contact tulip formed in a central opening a partition 5 is mounted and several around Switch axis 2 arranged around and diagonally downwards against the latter has directed elastic contact fingers that are separated from each other by slots. In its Switch-on position, the switching pin 3 protrudes into the contact tulip 4 and is from the outside by their contact fingers touches (Fig. 1).
- the contact tulip 4 is the one Switch axis 2 surrounding nozzle 6 from an electrical insulating material arranged in the shape of a upward constricting funnel and in a central Opening of another partition 7 is attached.
- the Partition 7 closes a first exhaust space 8a upwards from.
- a pressure chamber 15 adjoins the arc chamber 9 at the top, the with the arc room 9 by one of the ends of the Contact finger of the contact tulip 4 formed opening is.
- the pressure chamber 15 is through a Contact tulip 4 arranged, annular cover 16 and a cap 17, both made of electrically insulating material, limited.
- the cover 16 and the one spaced therefrom Cap 17 form one with respect to the Switch axis 2 rotationally symmetrical return channel 18, the from the pressure chamber 15 extends radially outwards on all sides and is then guided in the axial direction to the heating volume 11.
- a check valve 19 installed in the outlets of the return duct 18 into the heating volume 11 a check valve 19 installed.
- the pressure room 15 is by a number of evenly over the scope distributed exhaust pipes 20 with a second exhaust space 8b connected.
- Relief openings 21 are provided, which the return channel 18th connect to the second exhaust space 8b and through one Piston 22 one serving as a safety valve Pressure relief valve 23 are closed.
- These pistons 22 are from plate springs 24 in the relief openings 21st pressed.
- a cavity 25 is formed in its interior. This has a provided on the switching pin tip 26 Inlet opening 27 and several on the circumference of the switching pin 3 distributed outlet openings 28. The latter are in Direction of the switching axis 2 at such a distance of the inlet opening 27 arranged in the first Exhaust chamber 8a open as soon as the switching pin 3 during the switch-off process from the contact tulip 4 releases.
- a Closing element 29 is provided, which in the cavity 25 in Direction of the shift axis 2 is guided.
- the Closing element 29 has a guide pin 30 connected, which is guided in a guide 31 in the switching pin 3 is.
- the guide pin 30 is supported with a plate 32 on a closing spring 33 designed as a compression spring, which in a further cavity 34 inside the Switch pin 3 is housed.
- the closing element 29, the guide pin 30 and the plate 32 consist of an electrically insulating material, for example made of Polytetrafluoroethylene (PTFE).
- the pressure of the insulating gas in the heating volume 11 is one Pressure relief over the inside of the switching pin 3 still high enough to delete the Arc 10 to cause.
- 3 is the Abbrandschaltan extract 1 after extinguishing the arc and with the contacts 3, 4 in the fully open Condition shown.
- the Pressure relief valve 23 only has the function of a Safety valve and has no influence on the actual switch-off process.
- FIGS. 6 and 7 is a variant of that in FIGS. 1-5 shown Abbrandschaltan Aunt 1, in which the Switch 3 consists of another material. Yourself corresponding parts are therefore the same in FIGS. 6 and 7 as indicated in Figures 1-5.
- Closing element 29 the guide pin 30 and the plate 32 made of an electrically conductive, erosion-resistant material, e.g. made of a tungsten-copper alloy.
- the Closure element 29 is in at least one point in very good electrical connection with the switching pin 3. In the embodiment shown, this becomes electrical conductive connection via arranged in the guide 31 Contact blades 35 made.
- the arc 10 stands an area available around the surface of the Closure element 29 is larger than that by the Switch pin 3 alone formed area, which means that the current density at the arc base points is not too high becomes.
- the burn-up switching arrangement according to FIGS. 6 and 7 is furthermore suitable for switches with which very often small currents (mostly nominal currents) are switched off. at such switches relieve the electrically conductive Closure element 29 the switching pin 3 from the consequences of Burns and thus contributes to an increase in its Lifespan at.
- the closing element 29 in its front end position in a distance from the entry opening 27, but still arranged between this and the outlet openings 28. That means that in this embodiment too Closure element 29 in its basic position in which it is held by the closing spring 33, the connection between the inlet opening 27 and the outlet openings 28 keeps closed. This connection will be the same as for the Embodiments according to FIGS. 1-7 only then released when the gas pressure in the arc chamber 9 is large is enough to push the closing element 29 back in its rear end position against the force of the closing spring 33 to effect.
- This third embodiment the operation of which is the same is like that of the other two embodiments the advantage that because of the short closing element 29 the path to be traveled the connection between the Inlet opening 27 and outlet openings 28 very quickly is released. This is particularly beneficial in cases in which the pressure increase in the heating volume 11 or Arc space 9 takes place very quickly.
- the closure element 29 (and also the Guide pin 30 and the plate 32) is especially the required mechanical stability is crucial. In any The case is for the closure element 29 to be more resistant to erosion Plastic or a burn-resistant metal to use because the gases acting on the closing element 29 very much are hot.
- Burn-up switching arrangements in the context of the invention are also different than can be formed as shown. So it is for Example possible with the pressure relief arrangement sliding closure element 29 in a cavity in the to accommodate fixed contact.
- the erosion switching arrangements according to the invention with a new training of a contact piece can not only in Circuit breakers of the type shown in DE-A-198 16 505 Type are used, but also in circuit breakers of other suitable construction.
Landscapes
- Breakers (AREA)
- Circuit Breakers (AREA)
- Keying Circuit Devices (AREA)
Abstract
Description
Es zeigen
- Fig. 1
- einen axialen Längsschnitt durch die Abbrandschaltanordnung eines Leistungsschalters mit den Schaltstücken in geschlossenem Zustand,
- Fig. 2
- in einer der Fig. 1 entsprechenden Darstellung die Abbrandschaltanordnung kurz nach dem Trennen der Schaltstücke,
- Fig. 3
- in einer der Fig. 1 entsprechenden Darstellung die Abbrandschaltanordnung mit den Schaltstücken in geöffnetem Zustand,
- Fig. 4
- in vergrössertem Massstab die Schaltstücke der Abbrandschaltanordnung im in der Fig. 1 gezeigten Zustand,
- Fig. 5
- in vergrössertem Massstab die Schaltstücke der Abbrandschaltanordnung im in der Fig. 2 gezeigten Zustand,
- Fig.6
- in einer der Fig. 4 entsprechenden Darstellung eine Variante der in den Fig. 1-5 gezeigten Ausführungsform mit einer anderen Ausgestaltung des beweglichen Schaltstückes, und
- Fig. 7
- die Schaltstücke der Ausführungsform gemäss Fig. 6 kurz nach ihrer Trennung.
- 1
- Abbrandschaltanordnung
- 2
- Schaltachse
- 3
- erstes Schaltstück (Schaltstift)
- 4
- zweites Schaltstück (Kontakttulpe)
- 5
- Trennwand
- 6
- Düse
- 7
- Trennwand
- 8a, 8b
- Auspuffraum
- 9
- Lichtbogenraum
- 10
- Lichtbogen
- 11
- Heizvolumen
- 12
- Blasschlitz
- 13
- Blaskanal
- 14
- Rückschlagventil
- 15
- Druckraum
- 16
- Abdeckung
- 17
- Kappe
- 18
- Rückführkanal
- 19
- Rückschlagventil
- 20
- Auspuffrohr
- 21
- Entlastungsöffnung
- 22
- Kolben
- 23
- Überdruckventil
- 24
- Tellerfedern
- 25
- Hohlraum
- 26
- Schaltstiftspitze
- 27
- Einlassöffnung
- 28
- Auslassöffnung
- 29
- Verschliesselement
- 30
- Führungsbolzen
- 31
- Führung
- 32
- Teller
- 33
- Schliessfeder
- 34
- Hohlraum
- 35
- Kontaktlamellen
Claims (12)
- Abbrandschaltanordnung für einen Leistungsschalter, die zwei Schaltstücke (3, 4) aufweist, die relativ zueinander längs einer Schaltachse (2) zwischen einer Einschaltstellung, in der sie miteinander in Berührung stehen, und einer Ausschaltstellung, in der sie in axialer Richtung um eine Schaltstrecke voneinander beabstandet sind und miteinander einen Lichtbogenraum (9) festlegen, umstellbar sind, und mit einem im Inneren des einen, ersten Schaltstückes (3) vorgesehenen Hohlraum (25), der einerseits mit einer am freien Ende dieses ersten Schaltstückes (3) ausgebildeten und zum anderen, zweiten Schaltstück (4) hin gerichteten Einlassöffnung (27) und andererseits mit wenigstens einer, in Richtung der Schaltachse (2) von der Einlassöffnung (27) beabstandeten, im ersten Schaltstück (3) vorgesehenen Auslassöffnung (28) verbunden ist, gekennzeichnet durch ein im Hohlraum (25) des ersten Schaltstückes (3) angeordnetes, in Richtung der Schaltachse (2) verschiebbares Verschliesselement (29), das in einer Grundstellung unter der Wirkung eines elastischen Rückstellelementes in einer vorderen Endlage gehalten ist, in der es die wenigstens eine Auslassöffnung (28) gegenüber der Einlassöffnung (27) abschliesst und aus der es beim Trennen der Schaltstücke (3, 4) durch den einwirkenden Gasdruck im Lichtbogenraum (9) gegen die Kraft des Rückstellelementes in Richtung von der Einlassöffnung (27) weg in eine hintere Endlage verschiebbar ist, in der es die Verbindung zwischen der Einlassöffnung (27) und der wenigstens einen Auslassöffnung (28), die nach dem Trennen der Schaltstücke (3, 4) in einen Auspuffraum (8a) mündet, freigibt.
- Abbrandschaltanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Verschliesselement (29) in seiner Grundstellung die Einlassöffnung (27) verschliesst.
- Abbrandschaltanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Verschliesselement (29) in seiner Grundstellung eine zwischen der Einlassöffnung (27) und der wenigstens einen Auslassöffnung (28) liegende vordere Endlage einnimmt.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Verschliesselement (29) mittels einer im ersten Schaltstück (3) vorgesehenen Führung (31) längsgeführt ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Rückstellelement eine Schliessfeder (33) ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mehrere über den Umfang des ersten Schaltstückes (3) angeordnete, vom Hohlraum (25) ausgehende Auslassöffnungen (28) vorhanden sind.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der sich in Richtung der Schaltachse (2) erstreckende Hohlraum (25) am vorderen Ende (26) des ersten Schaltstückes (3) ausgebildet ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Verschliesselement (29) mit einem im ersten Schaltstück (3) längsgeführten Führungsbolzen (30) verbunden, ist, der auf dem im Innern des ersten Schaltstückes (3) untergebrachten Rückstellelement abgestützt ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Verschliesselement (29) aus einem elektrisch isolierenden Material besteht.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Verschliesselement (29) aus einem elektrisch leitenden Material besteht und mit dem ersten Schaltstück (3) elektrisch leitend verbunden ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das zweite Schaltstück (4) ortsfest angeordnet und das erste Schaltstück (3) mittels eines Schalterantriebes in Richtung der Schaltachse (2) bewegbar ist.
- Abbrandschaltanordnung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass das erste Schaltstück (3) als Schaltstift ausgebildet ist.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50114865T DE50114865D1 (de) | 2001-01-23 | 2001-01-23 | Abbrandschaltanordnung für einen Leistungsschalter |
AT01810058T ATE430374T1 (de) | 2001-01-23 | 2001-01-23 | Abbrandschaltanordnung für einen leistungsschalter |
EP01810058A EP1225610B1 (de) | 2001-01-23 | 2001-01-23 | Abbrandschaltanordnung für einen Leistungsschalter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01810058A EP1225610B1 (de) | 2001-01-23 | 2001-01-23 | Abbrandschaltanordnung für einen Leistungsschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1225610A1 true EP1225610A1 (de) | 2002-07-24 |
EP1225610B1 EP1225610B1 (de) | 2009-04-29 |
Family
ID=8183683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01810058A Expired - Lifetime EP1225610B1 (de) | 2001-01-23 | 2001-01-23 | Abbrandschaltanordnung für einen Leistungsschalter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1225610B1 (de) |
AT (1) | ATE430374T1 (de) |
DE (1) | DE50114865D1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2455957B1 (de) | 2010-11-22 | 2014-03-26 | ABB Research Ltd. | Gasisolierter Schutzschalter |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385212A1 (fr) * | 1977-03-24 | 1978-10-20 | Mitsubishi Electric Corp | Interrupteur de circuit |
EP0004213A1 (de) * | 1978-03-01 | 1979-09-19 | Merlin Gerin | Lichtbogenlöscheinrichtung mit pneumatischer und magnetischer Blasung |
FR2646961A1 (fr) * | 1989-05-11 | 1990-11-16 | Alsthom Gec | Disjoncteur a moyenne tension a autosoufflage |
DE19816505A1 (de) * | 1998-04-14 | 1999-10-21 | Asea Brown Boveri | Leistungsschalter |
-
2001
- 2001-01-23 EP EP01810058A patent/EP1225610B1/de not_active Expired - Lifetime
- 2001-01-23 DE DE50114865T patent/DE50114865D1/de not_active Expired - Lifetime
- 2001-01-23 AT AT01810058T patent/ATE430374T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385212A1 (fr) * | 1977-03-24 | 1978-10-20 | Mitsubishi Electric Corp | Interrupteur de circuit |
EP0004213A1 (de) * | 1978-03-01 | 1979-09-19 | Merlin Gerin | Lichtbogenlöscheinrichtung mit pneumatischer und magnetischer Blasung |
FR2646961A1 (fr) * | 1989-05-11 | 1990-11-16 | Alsthom Gec | Disjoncteur a moyenne tension a autosoufflage |
DE19816505A1 (de) * | 1998-04-14 | 1999-10-21 | Asea Brown Boveri | Leistungsschalter |
Also Published As
Publication number | Publication date |
---|---|
ATE430374T1 (de) | 2009-05-15 |
DE50114865D1 (de) | 2009-06-10 |
EP1225610B1 (de) | 2009-04-29 |
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