EP0811998B1 - Druckgasschalter mit einer Ausschalt-Bremsvorrichtung - Google Patents
Druckgasschalter mit einer Ausschalt-Bremsvorrichtung Download PDFInfo
- Publication number
- EP0811998B1 EP0811998B1 EP96108917A EP96108917A EP0811998B1 EP 0811998 B1 EP0811998 B1 EP 0811998B1 EP 96108917 A EP96108917 A EP 96108917A EP 96108917 A EP96108917 A EP 96108917A EP 0811998 B1 EP0811998 B1 EP 0811998B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- drive rod
- circuit breaker
- gas
- raceway
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
-
- 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
- H01H33/91—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 the arc-extinguishing fluid being air or gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H2003/3084—Kinetic energy of moving parts recuperated by transformation into potential energy in closing or opening spring to be used in next operation
Definitions
- the invention relates to a gas pressure switch, in particular for high voltage, with a fixed contact element and a moving one that interacts with it Contact element, one with the movable contact element a drive rod connecting drive, and a stop braking device for braking a switch-off movement the drive rod.
- a gas pressure switch of this type is from the unpublished European Patent application EP-A 0780859 known. It deals is a so-called blow piston switch, which in the final phase of a switch-off process Blow piston is moved with a blow cylinder. While against pressure gas switches with a stationary blowing piston the end of a switch-off stroke in the piston-cylinder system residual gas forms a gas cushion that supports the braking of the moving masses Blow piston switches of the type mentioned the residual gas contribute to braking the moving masses. That's why in the pressure gas switch according to EP-A 0780859 a pneumatic cut-out brake assembly used.
- the stop brake assembly contains a brake piston loosely arranged on the drive rod, the one in the end section of the switch-off stroke Stop is taken. These brakes have a low one Height and are therefore for installation in the tight available space in the control chamber suitable. Their disadvantage is that they are extremely tight tolerances have to be manufactured, and that the energy converted into heat when braking no longer available for a subsequent switch-on process stands.
- the present invention is based on the object a gas pressure switch, especially for high voltage, with a stop brake device to create where the Braking energy at least in part for the start-up process can be recovered, and the stop braking device are manufactured without adhering to narrow tolerances can.
- the pressure gas switch according to the invention is at Braking the drive rod and the one moving with it Switch parts a part of the kinetic energy into potential Energy from existing in the switch-off braking device Feathers converted; this potential energy becomes an additional acceleration of the drive rod and the switch parts moving with it during the switch-on process exploited. It is particularly advantageous that the switch-off braking device neither on to be monitored and refilled in addition to the insulating gas Medium still contains abrasion-producing parts.
- a gas pressure switch 1 has one of one Interrupter isolator 2 limited interrupter 3. Above and below is the interrupter isolator 2, each with a connection flange 4, 5 connected. The upper connection flange 4 is connected to a fixed contact element 6, that a burn-off contact piece 7 and a continuous current contact piece 8 has. With the fixed erosion contact 7 acts a movable contact element 10 together.
- the pressure gas switch 1 is as a blow piston switch educated; a provided with a blowing nozzle 12 with the movable contact element 10 also axially Movable blow cylinder is only symbolically shown in Fig. 1 and designated by 13; it works in the on position the switch with the continuous current contact piece 8 together.
- the structure and mode of operation of the blow piston switch is, for example, in the unpublished European ones Patent applications EP-A 0689218 and EP-A 0780859 in detail described; express reference is made to these.
- the axial movement of the movable contact element 10, the blow cylinder 13 and a dashed line Blow piston 14 from a switch-on position in which the movable contact element 10 in contact with the is fixed contact element 6, in a in Fig. 1st Switch-off position shown takes place via a drive rod 15, which passes through the lower connecting flange 5 and hinged to an actuating rod 16 made of insulating material that is inside a post insulator assembly 17 runs.
- the operating rod 16 is not one Mechanism shown in more detail, arranged in a housing 18 19 connected to a drive 20.
- an insulating gas preferably SF6, under a certain pressure relative to the environment.
- Fig. 2 shows the lower end region of the interrupter isolator 2, which by means of a mounting flange 23 with the Connection flange 5 is connected.
- the mounting flange 23 is screwed to the connecting flange 5, which in Fig.2 is not shown.
- the connection flange 5 is also screwed to a further fastening flange 24, via which the attachment to the post insulator 25 the post insulator assembly 17.
- the interrupter isolator 2 is with the mounting flange 23 and Post insulator 25 with the further fastening flange 24 firmly connected by means of a cement.
- the inside of the Post insulator arrangement 17 and also the switching chamber 3 are in the area of the connection flange 5 via seals 26, 27 sealed to the outside.
- the connecting flange 5 points upwards projecting into the interior of the switching chamber 3, sleeve-shaped Part 30, which is provided with a transverse wall 31 and with its upper end region, not shown, for Support or for storage of the blow piston 14 is used.
- Fig. 3 is the transverse wall 31 for clarity because omitted.
- the transverse wall 31 is designed that the axially movable drive rod 15 unhindered can take hold.
- the connecting flange 5 In the transverse wall 31 on the one hand and in a lower, inner one Paragraph 32 of the connecting flange 5 are four guide rods 35, 36, 37, 38 attached. There are two guide rods each 35, 36 and 37, 38 symmetrical to an axial plane A (Fig. 3) arranged in which also in the vertical Direction of the switch axis y lies, whereby the axes of the respective guide rods 35, 36, 37, 38 form an acute angle a with the axial plane A, as shown in Fig. 2.
- the pairs of guide rods 35, 36 and 37, 38 are each parallel to the switch axis y Level B, B ', the same distance b from the Pressure switch axis y are arranged.
- roller bearing 41, 42 On each side of the axial plane A. Guide rods 35, 37 and 36, 38 is a roller bearing 41, 42 slidably arranged. Each roller bearing 41, 42 carries centered between the guide rods 35, 37 and 36, 38 a freely rotatably mounted roller 43 or 44, the Rollers 43, 44 are intended to be arranged centrally Drive rod 15 cooperate, as below is described in more detail.
- Each guide rod 35, 36, 37, and 38 is coaxially one Assigned spring 47, the one on the corresponding Roller bearings 41 and 42 and on the other hand on paragraph 32 of the connecting flange 5 is supported.
- the springs 47 are preferred as one or more concentrically arranged Coil spring or designed as a plate spring pack.
- the drive rod 15 is in its lower, the stop braking device 22 sweeping area backdrop formed and arranged symmetrically to the axial plane A.
- career paths each with an upper, to Switch axis y parallel, contact-side track section 49, a lower one, also to the switch axis y parallel, drive-side raceway section 48 and one intermediate, sloping connecting section 50 include.
- the two upper career sections 49 are at a greater distance from the switch axis y, as the lower race sections 48.
- the drive rod In the switched-on position of the compressed gas switch 1, in which the movable contact element 10 with the fixed Contact element 6 cooperates, the drive rod is 15 in its uppermost position. Lying there the rollers 43 - the right half of Figure 2 corresponding - On the lower race sections 48 of the drive rod 15 on. The springs 47 are at least partially relaxed.
- the drive 20 now initiates the switch-off process, so the drive rod 16 via the actuating rod 15 and with this the movable contact element 10 and the blowing cylinder 13 is accelerated downwards with the blowing nozzle 12.
- the switch-off braking device 22 allows this movement, from the minimal rolling friction losses between the rollers 43, 44 and the raceway sections 48 apart from no braking effect until the connecting sections 50 in cooperation with the rollers 43, 44 come. From this moment on, the connecting sections 50 from the drive rod 15 a force exerted on the rollers 43, 44, one on both sides Component of this force overcoming the rollers 43, 44 the force of the springs 47 apart.
- the guide rods 35, 36, 37 and 38 result an inexpensive, compact for installation in the pressure switch 1 Form of the switch-off braking device 22.
- the Springs 47 a long effective stroke.
- switch-off braking device would be provided in particular for blow piston switches an application with conventional pressure gas switches with fixed blowing piston also possible.
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Description
- Fig. 1
- schematisch einen Druckgasschalter in Ansicht und teilweise im Schnitt, mit einer integrierten Ausschalt-Bremsvorrichtung;
- Fig. 2
- gegenüber Fig. 1 vergrössert einen Teil des Druckgasschalters mit der Ausschalt-Bremsvorrichtung im Längsschnitt, wobei die linke Hälfte der Ausschaltstellung des Druckgasschalters und die rechte Hälfte der Einschaltstellung entspricht; und
- Fig. 3
- einen Teil der Ausschalt-Bremsvorrichtung nach Fig. 2 in Draufsicht und teilweise im Schnitt in der Einschaltstellung.
Claims (4)
- Druckgasschalter, insbesondere für Hochspannung, mit einem feststehenden Kontaktelement (6) und einem mit diesem zusammenwirkenden beweglichen Kontaktelement (10), einer das bewegliche Kontaktelement (10) mit einem Antrieb (20) verbindenden Antriebsstange (15), einer Ausschalt-Bremsvorrichtung (22) zum Bremsen einer Ausschaltbewegung der Antriebsstange (15), die eine der Antriebsstange (15) zugeordnete Laufbahn (48, 49, 50) sowie eine mit der Laufbahn (48, 49, 50) zusammenwirkende, entgegen der Kraft einer Feder (47) bewegbar geführte Rolle (43 bzw. 44) umfasst, wobei die Laufbahn (48, 49, 50) zwei parallel zur Schalterachse (y) und hintereinander angeordnete Laufbahnabschnitte (48, 49) aufweist, von denen der kontaktseitige Laufbahnabschnitt (49) in einem grösseren Abstand von der Schalterachse (y) liegt als der antriebseitige Laufbahnabschnitt (48), und die beiden Laufbahnabschnitte (48, 49) über einen Verbindungsabschnitt (50) miteinander verbunden sind, der bei der Ausschaltbewegung der Antriebsstange (15) die Rolle (43 bzw. 44) entgegen der Kraft der Feder (47) unter gleichzeitiger Ausübung einer Bremskraft auf die Antriebsstange (15) zurückdrängt, wobei
die Rolle (43 bzw. 44) an einer Führungsstange verschiebbar geführt ist, welche in einem spitzen Winkel (a) zu der Schalterachse (y) angeordnet ist. - Druckgasschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Feder (47) von der Führungsstange geführt ist.
- Druckgasschalter nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zwei Laufbahnen (48, 49, 50) symmetrisch zur Schalterachse (y) angeordnet sind.
- Druckgasschalter nach Anspruch 3, dadurch gekennzeichnet, dass die den beiden Laufbahnen (48, 49, 50) zugeordneten Rollen (43, 44) an je einem Rollenlager (41, 42) drehbar gelagert sind, wobei jedes Rollenlager (41, 42) an zwei parallelen Führungsstangen (35, 37 bzw. 36, 38) entgegen der Kraft von zu den Führungsstangen koaxial angeordneten Federn (47) verstellbar angeordnet ist.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96108917A EP0811998B1 (de) | 1996-06-04 | 1996-06-04 | Druckgasschalter mit einer Ausschalt-Bremsvorrichtung |
AT96108917T ATE227047T1 (de) | 1996-06-04 | 1996-06-04 | Druckgasschalter mit einer ausschalt- bremsvorrichtung |
DE59609837T DE59609837D1 (de) | 1996-06-04 | 1996-06-04 | Druckgasschalter mit einer Ausschalt-Bremsvorrichtung |
US08/867,881 US5920051A (en) | 1996-06-04 | 1997-06-03 | Compressed-gas cutout having a disconnecting braking structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96108917A EP0811998B1 (de) | 1996-06-04 | 1996-06-04 | Druckgasschalter mit einer Ausschalt-Bremsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0811998A1 EP0811998A1 (de) | 1997-12-10 |
EP0811998B1 true EP0811998B1 (de) | 2002-10-30 |
Family
ID=8222844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96108917A Expired - Lifetime EP0811998B1 (de) | 1996-06-04 | 1996-06-04 | Druckgasschalter mit einer Ausschalt-Bremsvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5920051A (de) |
EP (1) | EP0811998B1 (de) |
AT (1) | ATE227047T1 (de) |
DE (1) | DE59609837D1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11069495B2 (en) * | 2019-01-25 | 2021-07-20 | Eaton Intelligent Power Limited | Vacuum switching apparatus and drive mechanism therefor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2233605A (en) * | 1937-12-23 | 1941-03-04 | Westinghouse Electric & Mfg Co | Circuit interrupter |
DE1045511B (de) * | 1957-06-25 | 1958-12-04 | Licentia Gmbh | Druckgasschalter |
DE2733551A1 (de) * | 1977-07-25 | 1979-02-08 | Siemens Ag | Druckgasschalter |
CH675175A5 (de) * | 1987-10-27 | 1990-08-31 | Bbc Brown Boveri & Cie | |
DE4116314A1 (de) * | 1991-05-15 | 1992-11-19 | Siemens Ag | Daempfungseinrichtung fuer leistungsschalter |
DE9201943U1 (de) * | 1992-02-13 | 1992-06-11 | Siemens AG, 8000 München | Einrichtung zur Dämpfung einer Schaltbewegung eines elektrischen Leistungsschalters |
DE9210943U1 (de) * | 1992-08-17 | 1992-12-10 | Häfner & Krullmann GmbH, 4817 Leopoldshöhe | Kastenartiges Behältnis |
DE4427163A1 (de) * | 1994-08-01 | 1996-02-08 | Abb Management Ag | Druckgasschalter |
-
1996
- 1996-06-04 EP EP96108917A patent/EP0811998B1/de not_active Expired - Lifetime
- 1996-06-04 AT AT96108917T patent/ATE227047T1/de not_active IP Right Cessation
- 1996-06-04 DE DE59609837T patent/DE59609837D1/de not_active Expired - Fee Related
-
1997
- 1997-06-03 US US08/867,881 patent/US5920051A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE227047T1 (de) | 2002-11-15 |
DE59609837D1 (de) | 2002-12-05 |
EP0811998A1 (de) | 1997-12-10 |
US5920051A (en) | 1999-07-06 |
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