EP0820083B1 - Leistungsschalter - Google Patents
Leistungsschalter Download PDFInfo
- Publication number
- EP0820083B1 EP0820083B1 EP97810430A EP97810430A EP0820083B1 EP 0820083 B1 EP0820083 B1 EP 0820083B1 EP 97810430 A EP97810430 A EP 97810430A EP 97810430 A EP97810430 A EP 97810430A EP 0820083 B1 EP0820083 B1 EP 0820083B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- return stop
- drive
- catch
- power transmission
- 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
Links
- 230000033001 locomotion Effects 0.000 claims description 27
- 238000007664 blowing Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010791 quenching Methods 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 230000003628 erosive effect Effects 0.000 description 33
- 230000000630 rising effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H2001/508—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position with mechanical means to prevent return/reverse movement of movable contact once opening or closing cycle has started
-
- 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
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
Definitions
- the invention is based on one Circuit breaker according to the preamble of claim 1 or claim 8.
- the backstop can be activated regardless of the installation position of the the respective circuit breaker. If the Burning contacts of circuit breakers using Racks are moved, so they can be anyway existing racks at the same time advantageous for the Use installation of the backstop.
- 1a shows schematically a first one Embodiment of a backstop 21 shown.
- On Drive 1a actuates one by means of a drive element 1 straight, axially extending rack 2.
- An arrow 3 indicates Direction in which the rack 2 at a Switching off moves.
- the upper part of the rack 2 is with a not shown, movable erosion contact of the Circuit breaker connected.
- the mean depth of engagement of the Rack 2 is shown by a straight dash-dotted line 4 shown.
- the rack 2 is a schematic indicated guide 5 guided axially.
- one rigid axis of rotation 6 provided in one fixed distance A to the dash-dotted line 4 .
- a pawl 7 rotates.
- the pawl 7 points here for example, a rectangular cross section. That the Rack 2 facing end of the pawl 7 engages directly after the beginning of the movement of the rack 2 in the teeth of the Rack 2 a.
- At the rack 2 facing away from the end Pawl 7 is attached to one end of a spring 8.
- the other The end of the spring 8 is on a fixed support 9 attached.
- the spring 8 holds the pawl 7 at rest in the in Fig.1a shown position.
- the idle state of the jack 7 provides an undercut 7a on the rack 2 that the Rack 2 facing end of the pawl 7 in its Mobility is not restricted.
- the spring 8 is biased. Once the jack 7 over the top of the first tooth of the rack 2 slides away, so snaps the pawl 7, pulled by the spring 8, clockwise continues and then meets the second rising edge 10 of the next tooth.
- Fig.1b the position is shown which the Pawl 7 occupies if during the above described movement the direction of movement of the rack 2 reverses as an arrow 13 indicates. In this case it is enough the available power of the drive because of additional Opposing forces do not result in the opening movement to finish in the direction of arrow 3.
- the end of Jack 7 becomes one between the rising edge 10 next tooth, the falling edge 12 of an already swept tooth and the axis of rotation 6 tilted so that the movement of the rack 2 in the direction of arrow 13 is blocked.
- the movement of the erosion contact in Switch-off direction is then interrupted, one opposite movement of the erosion contact back in Switch-on direction is suppressed.
- the pawl 7 is released automatically from their tilt, and the switch-off movement of the erosion contact will surely continue.
- this jammed pawl 7 by means of an additional an arrow 14 indicated to release force. That power is, for example, by means of a hydraulic or pneumatic piston-cylinder arrangement or one targeted actuable electromagnet applied.
- the additional Force causes the pawl 7 to rotate Counterclockwise around its axis of rotation 6, like an arrow 15 indicates that the rotation continues until the pawl 7 is no longer in engagement with the teeth of the rack 2.
- the pawl 7 is then held against the force of the spring 8 and the rack 2 can move in the direction of Continue arrow 13.
- circuit breakers can do this mechanical Loosening the pawl 7 can be used advantageously.
- FIG 3 shows an embodiment of the backstop 21 in which the rack 2 is formed as a segment of a circle is.
- the average depth of engagement of the rack 2 is here by a circular dash-dotted line 4 shown.
- the fixed distance A between the dash-dotted line 4 and the axis of rotation 6 is also here appropriately set.
- the operation of the jack 7 is at this embodiment variant exactly the same as above already described.
- the erosion contact or the erosion contacts of the Circuit breakers can be made using the most diverse Drive rods are set in motion, so too different forms of each to the particular Rack 2 to be adapted to drive linkage can. If care is taken that the shape of the jack 7, the shape of the rack 2, the shape of the flanks of the teeth the rack 2, the length of the pawl 7 and the distance A are coordinated, so you get a versatile applicable to the respective construction conditions customizable backstop. This backstop is also regardless of the position of the circuit breaker used.
- FIG 4 shows a partial section through a centrally symmetrically constructed quenching chamber 16 of a circuit breaker, as described, for example, in the patent specification EP 0 313 813 B1.
- This quenching chamber 16 has a quenching chamber housing, not shown, which is filled with SF 6 gas under pressure.
- This quenching chamber 16 also has a central axis 17.
- the quenching chamber 16 is shown on the left of this central axis 17 in the switched-off state and on the right in the switched-on state.
- the extinguishing chamber 16 also has two moveable erosion contacts 18, 19, the first 18 of these erosion contacts being tubular and the second 19 being a solid switching pin. In the switched-on state, the erosion contact 19 is partially enclosed by the erosion contact 18.
- the erosion contact 18 is rigidly connected to an insulating nozzle 20 and is moved together with the latter by a drive (not shown), a first backstop 21, which is interposed between the drive and the insulating nozzle 20 or erosion contact 18 and is shown schematically in the on and off position, prevents the erosion contact 18 can run back in the switch-on direction during the switch-off movement.
- a dashed line of action 22 indicates the mechanical connection between the rack 2 of the backstop 21 and the tubular erosion contact 18.
- the drive transmits its energy to the rack 2 by means of the drive element 1.
- Isolation nozzle 20 On the opposite side of the backstop 21 Isolation nozzle 20 are two diametrically opposed to each other opposing racks 23 with the insulating nozzle 20 firmly connected.
- the insulating nozzle 20 slides in a fixed one Guide tube 24 in which two into the racks 23rd engaging one by one in the guide tube 24 stationary rotating axis rotating gears 25 are arranged.
- Gears 25 each in one in the surface of the Burning contact 19 incorporated or recessed Rack.
- the erosion contact 19 is shown schematically in and Second backstop 26 shown in the off position directly connected, which prevents the erosion contact 19 during the switch-off movement in the switch-on direction can run back.
- a dashed line of action 27 indicates the direct mechanical connection between the rack 2a of the second backstop 26 and the massive, as Switch pin trained erosion contact 19.
- the Backstop 26 is not in this Power transmission system integrated, which of the Insulating nozzle 20 via the racks 23 and the gears 25 acts on the erosion contact 19.
- the power transmission system can namely the insulating nozzle 20th act resilient and the movement of the erosion contact 19th delay, so that one directly on the erosion contact 19 acting regardless of the backstop 21 working, backstop 26 is quite useful. It is but also possible that only one of the two backstops 21 or 26 is installed.
- a backstop installed in a circuit breaker with only one moving erosion contact will be described in more detail below. It is assumed that a circuit breaker has a piston-cylinder blowing device, in which insulating gas, preferably SF 6 gas, is compressed in a known manner for blowing the switch-off arc. This compressed insulating gas can only escape from the piston-cylinder blowing device and blow the arc if the pressure in the arc zone is lower than the pressure in the piston-cylinder blowing device.
- insulating gas preferably SF 6 gas
- This backstop is very versatile, especially in switch technology can with their help Less powerful and therefore cheaper drives be used without the functional and Operational safety of the switch in question is reduced.
Landscapes
- Circuit Breakers (AREA)
Description
- 1
- Antriebselement
- 1a
- Antrieb
- 2,2a
- Zahnstange
- 3
- Pfeil
- 4
- strichpunktierte Linie
- 5
- Führung
- 6
- Drehachse
- 7
- Klinke
- 7a
- Freistich
- 8
- Feder
- 9
- Support
- 10
- ansteigende Flanke
- 11
- Freistich
- 12
- abfallende Flanke
- 13,14,15
- Pfeil
- 16
- Löschkammer
- 17
- zentrale Achse
- 18,19
- Abbrandkontakt
- 20
- Isolierdüse
- 21
- Rücklaufsperre
- 22
- gestrichelte Wirkungslinie
- 23
- Zahnstangen
- 24
- Führungsrohr
- 25
- Zahnräder
- 26
- Rücklaufsperre
- 27
- Wirkungslinie
- A
- Abstand
Claims (9)
- Leistungsschalter mit einer Kolben-Zylinder-Blasvorrichtung und/oder einem Speichervolumen für lichtbogenerhitztes Löschgas, mit zwei miteinander in oder ausser Eingriff bringbaren Kontaktstücken, mit einem Antrieb, und mit Kraftübertragungselementen, welche Kraft vom Antrieb auf ein erstes beider Kontaktstücke führen, wobei das erste Kontaktstück mit mindestens einer Rücklaufsperre (21,26) in Wirkverbindung steht, dadurch gekennzeichnet,dass die Rücklaufsperre (21,26) nur bei Unterbrechungen der Ausschaltbewegung des ersten Kontaktstücks sperrt, unddass die Rücklaufsperre (21,26) bei einem von der Ausschaltstellung des Leistungsschalters ausgehenden Einschaltvorgang nicht aktiviert wird.
- Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet,dass mindestens ein Bauelement der Rücklaufsperre (21,26) als Kraftübertragungselement nutzbar ist oder,dass die Rücklaufsperre (21,26) frei von den Kraftübertragungselementen ist.
- Leistungsschalter nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet,dass die Rücklaufsperre (21,26) eine Zahnstange (2,2a) und eine in diese eingreifende und gegebenenfalls deren Bewegung blockierende Klinke (7) aufweist, unddass die Klinke (7) mit einer Feder (8) beaufschlagt ist und um eine Drehachse (6) drehbar ausgebildet ist.
- Leistungsschalter nach Anspruch 3, dadurch gekennzeichnet,dass die Zahnstange (2) eine an den Bewegungsverlauf der Kraftübertragungselemente angepasste Form aufweist.
- Leistungsschalter nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet,dass die Form des in die Zahnstange (2) eingreifenden Endes der Klinke (7) der Form der Flanken (10,12) der Zähne angepasst ist.
- Leistungsschalter nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet,dass die Zahnstange (2) in den Bereichen, wo ein Eingriff der Klinke (7) nicht erwünscht ist, jeweils mit Freistichen (7a,11) versehen ist.
- Leistungsschalter nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet,dass die Klinke (7) mittels einer zusätzlichen Kraft gezielt ausser Eingriff bringbar ist.
- Leistungsschalter mit einer Kolben-Zylinder-Blasvorrichtung und/oder einem Speichervolumen für lichtbogenerhitztes Löschgas, mit zwei miteinander in oder ausser Eingriff bringbaren Kontaktstücken, mit einem Antrieb, und mit Kraftübertragungselementen, welche Kraft vom Antrieb auf ein erstes beider Kontaktstücke führen, und mit einem zusätzlichen Kraftübertragungselement, welches Kraft vom ersten Kontaktstück gegenläufig auf das zweite Kontaktstück überträgt, wobei das erste oder das zweite Kontaktstück mit einer Rücklaufsperre (21,26) zusammenwirkt, dadurch gekennzeichnet,dass die Rücklaufsperre (21,26) nur bei Unterbrechungen der Ausschaltbewegung des ersten oder des zweiten Kontaktstücks sperrt, unddass die Rücklaufsperre (21,26) bei einem von der Ausschaltstellung des Leistungsschalters ausgehenden Einschaltvorgang nicht aktiviert wird.
- Leistungsschalter nach Anspruch 8, dadurch gekennzeichnet,dass beide Kontaktstücke mit jeweils einer Rücklaufsperre (21,26) zusammenwirken.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19628408A DE19628408A1 (de) | 1996-07-15 | 1996-07-15 | Leistungsschalter |
| DE19628408 | 1996-07-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0820083A2 EP0820083A2 (de) | 1998-01-21 |
| EP0820083A3 EP0820083A3 (de) | 1999-01-20 |
| EP0820083B1 true EP0820083B1 (de) | 2003-09-24 |
Family
ID=7799824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97810430A Expired - Lifetime EP0820083B1 (de) | 1996-07-15 | 1997-07-02 | Leistungsschalter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0820083B1 (de) |
| DE (2) | DE19628408A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10317742B3 (de) * | 2003-04-17 | 2004-07-15 | Dürkopp Adler AG | Stau-Abschnitt einer Hänge-Förderanlage |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4459447A (en) * | 1982-01-27 | 1984-07-10 | Mitsubishi Denki Kabushiki Kaisha | Self extinguishing type gas circuit breaker |
| FR2554632B1 (fr) * | 1983-11-08 | 1986-09-05 | Merlin Gerin | Disjoncteur a autosoufflage a cliquet anti-retour debrayable |
| CH675175A5 (de) * | 1987-10-27 | 1990-08-31 | Bbc Brown Boveri & Cie | |
| DE4304544C2 (de) * | 1993-02-10 | 1995-05-24 | Siemens Ag | Antriebseinrichtung für einen elektrischen Leistungsschalter |
| DE4327676C2 (de) * | 1993-08-13 | 1998-07-02 | Siemens Ag | Antrieb für einen elektrischen Hochspannungs-Leistungsschalter |
| DE4427163A1 (de) * | 1994-08-01 | 1996-02-08 | Abb Management Ag | Druckgasschalter |
-
1996
- 1996-07-15 DE DE19628408A patent/DE19628408A1/de not_active Withdrawn
-
1997
- 1997-07-02 EP EP97810430A patent/EP0820083B1/de not_active Expired - Lifetime
- 1997-07-02 DE DE59710772T patent/DE59710772D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19628408A1 (de) | 1998-01-22 |
| DE59710772D1 (de) | 2003-10-30 |
| EP0820083A3 (de) | 1999-01-20 |
| EP0820083A2 (de) | 1998-01-21 |
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