EP1148527A1 - Schalter mit Lichtbogenbeblasung, versehen mit einer Lichtbogenkammer mit reduzierter Gaskompression und hin- und hergehendem Kolben - Google Patents

Schalter mit Lichtbogenbeblasung, versehen mit einer Lichtbogenkammer mit reduzierter Gaskompression und hin- und hergehendem Kolben Download PDF

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Publication number
EP1148527A1
EP1148527A1 EP01400884A EP01400884A EP1148527A1 EP 1148527 A1 EP1148527 A1 EP 1148527A1 EP 01400884 A EP01400884 A EP 01400884A EP 01400884 A EP01400884 A EP 01400884A EP 1148527 A1 EP1148527 A1 EP 1148527A1
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EP
European Patent Office
Prior art keywords
contact
piston
compression
cylinder
movement
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
Application number
EP01400884A
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English (en)
French (fr)
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EP1148527B1 (de
Inventor
Joel Ozil
Michel Perret
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.)
Grid Solutions SAS
Original Assignee
Alstom SA
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Publication date
Application filed by Alstom SA filed Critical Alstom SA
Publication of EP1148527A1 publication Critical patent/EP1148527A1/de
Application granted granted Critical
Publication of EP1148527B1 publication Critical patent/EP1148527B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H33/905—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 compression volume being formed by a movable cylinder and a semi-mobile piston
    • 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 relates generally to a switch, and more particularly on a circuit breaker, having a breaking chamber with reduced gas compression.
  • the invention can be applied equally well to circuit breakers with single contact movement than with double circuit breakers movement of contacts.
  • the functionality of the double movement of the contacts and that of the reduced gas compression are known separately for many years, but their association has drawbacks explained below.
  • a device has in particular been the subject of Patent FR 2,696,274.
  • the principle of reduced compression means that in the interrupting chamber, the compression of the gas is not performed only during part of the contact stroke, generally less than 50% of it.
  • This first part of the circuit breaker opening operation corresponds to the movement of contacts from the closed position to the start of arc blowing following their separation.
  • the gas compression is maximum at the moment separation of the contacts, and drops rapidly with the blowing of the arc. The energy required to open the circuit breaker is therefore reduced during the second part of the contact stroke.
  • the reduced speed of the contacts mobile in a dual movement device has an advantage certain in terms of total kinetic energy consumed which can be reduced by around 50% (schematically, the moving masses double, but the average speed of contacts decreases by half, hence a kinetic energy approximately divided by 2).
  • such reciprocating piston system can provide a compression length L typically between 1.1 x R / 2 to 1.25 x R / 2, instead of L equal to R / 2 for a fixed piston.
  • L typically between 1.1 x R / 2 to 1.25 x R / 2, instead of L equal to R / 2 for a fixed piston.
  • the pressure of blowing therefore remains significantly lower than that obtained in a analog circuit breaker with simple movement.
  • An object of the invention is to propose a solution which remedies these disadvantages, and which can be applied to all types of circuit breakers cut-off chamber with reduced gas compression, whether single or double movement of the contacts.
  • the invention makes it possible to combine, in a circuit breaker with double contact movement, the advantages of single circuit breakers movement with those of double movement circuit breakers without have the disadvantages.
  • the invention provides a device having the same compression length L as a single device movement, at distance R of identical contact overlap.
  • the invention also makes it possible to improve the performance of circuit breakers simple touch movement.
  • the known devices of the prior art do not allow to obtain that L typically between R and 1.25 x R. comparison, a device proposed in the context of the invention allows to obtain L at least equal to 2 x R.
  • the subject of the invention is an arc blowing switch, having a cut-off chamber with reduced gas compression, comprising a first contact and a second contact, the first contact being movable in a longitudinal direction (A) and integral with the switching chamber in which gas is compressed by a piston, means for moving said piston being arranged so that its movement changes direction in the switch enclosure after the gas compression phase, characterized in that said means of displacement include a telescopic link connected to said piston and in that the length of the displacement of said piston in said envelope during said compression phase is at least equal to the length displacement of said first contact during this same phase of compression.
  • said second contact is movable in said direction longitudinal in the opposite direction of said first contact.
  • said piston is alternately in connection with the second and the first contact during the opening operation of the switch.
  • said piston is integral with the second movable contact during the entire gas compression phase, and dissociates from it after the separation of said first and second contacts to become united said first contact.
  • This united connection provides a compression length L equal to said distance R.
  • the telescopic link is formed by a first cylinder extending the piston and surrounded by a second cylinder, the latter being fixed to a peripheral link permanently attached to the second mobile contact.
  • This telescopic link includes a set of blocking is released at the end of gas compression to allow the movement of the piston to change direction and follow the movement of the first contact after separation of the first and second contacts.
  • said blocking assembly is constituted by balls arranged in openings in the first cylinder, said balls being engaged in internal peripheral grooves at second cylinder during the gas compression phase to block said telescopic link.
  • Figure 1 is a very schematic representation, in half-section axial, of a circuit breaker according to the invention in its closed position.
  • Figure 2 is a very schematic representation, in half-section axial, of a circuit breaker according to the invention in an intermediate position opening hours.
  • Figure 3 is a very schematic representation, in half-section axial, of a circuit breaker according to the invention in its open position.
  • Figure 4 is a very schematic representation, in half-section axial, of a locking assembly used in the device according to the invention. The assembly is shown in the gas compression phase.
  • Figure 5 is a representation of said blocking assembly at the end gas compression, in a position corresponding to that described by figure 2.
  • Figure 6 is a representation of said just blocking assembly after the position described in figure 5. This moment corresponds to reversing the piston movement.
  • Figure 7 is a very schematic representation, in half-section axial, of a particular embodiment of a circuit breaker according to the invention. Telescopic inserts introducing travel ⁇ allow the stroke L of the piston in the compression volume during the gas compression phase is greater than the distance R of covering of the first and second contacts.
  • Figure 8 is a very schematic representation, in half-section axial, of a circuit breaker according to the invention having means of operation of the second contact which are separate from those of the first contact.
  • Figure 9 is a very schematic representation, in half-section axial, of a system of spring inserts introducing a travel ⁇ allowing a result equivalent to that provided by the device described in Figure 7.
  • a circuit breaker according to the invention is shown in half-section axial along its axis of revolution A. It includes an envelope, generally cylindrical in shape, not shown in the figures, the interior of which is disposed a first contact 1 which is hollow and which is movable in translation in direction A with a cylindrical cut 2 coaxially surrounding the contact 1.
  • the chamber cut-off 2 forms a blowing volume 3 and a volume of compression 4 separated by a crown 5 coaxial at contact 1, which extends radially from contact 1 and which is integral with the latter.
  • the blowing volume is closed by a nozzle 6 and communicates with through the crown 5 by a one-way valve 7 with the volume of compression 4 which is closed by a piston 8.
  • the circuit breaker also includes in the enclosure a second contact 9 in the form of a rod which is inserted into the hollow contact 1 in circuit breaker closing position.
  • This contact 9 is coaxial with the contact 1 and passes through the neck of the nozzle 6 in the closed position of the circuit breaker as shown in Figure 1.
  • contact 9 or contact 1 is moved in translation in direction A to be inserted in the other contact or be separated from the latter.
  • contact 9 is returned in the opposite direction to contact 1 by a fixed swivel mechanism in the envelope of the circuit breaker, illustrated by 10 and which can be a rack system or return levers so that the two contacts always move in the opposite direction in direction A.
  • a fixed swivel mechanism in the envelope of the circuit breaker illustrated by 10 and which can be a rack system or return levers so that the two contacts always move in the opposite direction in direction A.
  • the piston 8 is integral in movement with the contact 9 by in particular through a mechanical telescopic link 11 which extends in direction A and which is formed by a first cylinder 12 extending the rear of the piston 8 and a second cylinder 13 sliding on the cylinder 12.
  • a peripheral connection (14) which may consist of a third cylinder or connecting rods arranged around the axis A, surrounds the second cylinder 13 and is attached to it as well as to the second contact 9 by known fastening means.
  • This peripheral link (14) advantageously comprises a cylindrical section of insulating material 15.
  • Contact 1 has a bead over part of its length device 16 on which balls 17 placed in openings 18 formed in the cylinder 12 and coming to engage in an internal peripheral groove 19 of the second cylinder 13 in the gas compression phase, i.e. at the start of opening.
  • the telescopic link 11 is then locked by the balls 17 which transmit the thrust from the second cylinder 13 to the part 12A of the first cylinder 12 which is extended by the piston 8. From this done, the piston 8 is moved in the opposite direction from contact 1 and therefore from cylinder head 5 so that when approaching each other, cylinder head 5 and the piston 8 compress the gas in the compression volume 4.
  • the small annular part 12B of the first cylinder 12 located at the end of the cylinder opposite the piston, does not undergoes no effort from the balls, so that play can exist between the balls and said annular part 12B.
  • part 12A of the first cylinder 12 has at the openings 18 of the housings each having a spherical surface portion complementary to the surface of the ball bearing against this housing, in order to limit the contact pressures exerted by the balls on said part 12A during gas compression.
  • the depth of the grooves 19 of the second cylinder 13 is typically between 30% and 50% of the diameter D of the balls.
  • the part 12A of the first cylinder 12 can therefore have a thickness up to 70% of the diameter D of the balls.
  • the play between the balls and the annular part 12B allows that the minimum diameter G of the opening 18 is greater than the diameter D of the balls, even when the space between the part 12A of the first cylinder 12 and the peripheral bead 16 is reduced to a minimum.
  • the length L of the compression volume 4 in the direction A is substantially equal to the length R of the overlap area of the contacts, as well as the length of the movement of the balls 17 on the bead 16.
  • the insulation distance d between the two contacts 1 and 9 is otherwise substantially equal to the length of the relative displacement of the second cylinder 13 relative to cylinder 12 in direction A.
  • FIG. 7 illustrates an alternative embodiment of a circuit breaker with double movement of the contacts according to the invention.
  • a part of the gas compression operation of the compression volume is carried out before the start of the first movement phase and second contacts, which is delayed in relation to tripping opening the switch to allow the piston to have traveled a distance ⁇ when the movement of the contacts is engaged.
  • the delay in moving the first and second contacts is provided by two telescopic insert systems 20 and 21 which separate respectively the first contact 1 and the peripheral link 14 each in two parts in the longitudinal direction (A).
  • Each system insert allows to introduce a certain longitudinal travel between the two parts of the same element that it separates.
  • Figure 7 is shown with a game ⁇ consisting of gas space, but other variants can be envisaged.
  • the inserts 20 and 21 may each consist of a spring joining the two parts it separates. Blocking systems first and second contacts must then be set up so that keep these contacts stationary as long as the piston 8 moves in volume 4 has not reached the desired length ⁇ .
  • a system of movement return for example from cylinders 12 or 13 of the telescopic link 11, can unlock these locking systems as soon as that the length ⁇ is reached, the springs then being compressed, to allow the movement of the first and second contacts with a significant acceleration.
  • This device makes it possible to increase the compression volume, at detriment of the contact separation time which increases, as well as the mass of the moving parts. At equivalent compression volume, we can decrease the overlap distance R of the first and second contacts by increasing ⁇ .
  • the delay in moving the first and second contacts is here provided by means consisting of a single system of inserts telescopic, such as springs 26, allowing to introduce a certain longitudinal travel between the second cylinder 13 and the link peripheral 14.
  • the latter can be extended by a part cylindrical 14A surrounding the second cylinder 13 and capable of sliding the along it, for example thanks to ball bearings.
  • the pivoting mechanism 10 for coordinating the movements of the first and second contacts pass through the second cylinder 13 by longitudinal openings provided for this purpose.
  • the circuit breaker operating mechanism is connected to the second cylinder 13 and acts in thrust in the direction of the arrow on the figure when opening the circuit breaker.
  • the blocking system first and second contacts can here be achieved by a single device 30, consisting for example of a locking pivoting arm 31 retaining the peripheral connection 14 by a lug, this arm being able to be unlocked in a known manner by the thrust of the second cylinder 13 on an element 32 controlling the movement of said arm, as soon as said second cylinder has traveled a distance ⁇ .
  • FIG. 8 represents a circuit breaker whose constituent means are equivalent to those of the circuit breaker described in Figures 1 and 3, except for the operating means 25 of the second contact which are separated from the means 24 operating the first contact.
  • the stroke L of the piston 8 during the gas compression is equal to the distance R of overlap of first and second contacts. It is also possible to obtain a length compression L greater than R by separating the first contact 1 into two parts by a system of telescopic inserts 20 as shown in Figure 7.
  • the operating means 25 will then be actuated with a certain delay with respect to the means 24, depending on the travel ⁇ provided by said system of inserts, so as to synchronize the displacements of the first and second contacts.

Landscapes

  • Circuit Breakers (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP01400884A 2000-04-18 2001-04-05 Schalter mit Lichtbogenbeblasung, versehen mit einer Lichtbogenkammer mit reduzierter Gaskompression und hin- und hergehendem Kolben Expired - Lifetime EP1148527B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004987A FR2807870B1 (fr) 2000-04-18 2000-04-18 Interrupteur a soufflage d'arc, possedant une chambre de coupure a compression de gaz reduite et un mouvement alternatif du piston
FR0004987 2000-04-18

Publications (2)

Publication Number Publication Date
EP1148527A1 true EP1148527A1 (de) 2001-10-24
EP1148527B1 EP1148527B1 (de) 2004-12-15

Family

ID=8849377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400884A Expired - Lifetime EP1148527B1 (de) 2000-04-18 2001-04-05 Schalter mit Lichtbogenbeblasung, versehen mit einer Lichtbogenkammer mit reduzierter Gaskompression und hin- und hergehendem Kolben

Country Status (6)

Country Link
US (1) US6489581B2 (de)
EP (1) EP1148527B1 (de)
AT (1) ATE285116T1 (de)
CA (1) CA2344256C (de)
DE (1) DE60107747T2 (de)
FR (1) FR2807870B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE484067T1 (de) * 2004-08-23 2010-10-15 Abb Technology Ag Schaltkammer und hochleistungsschalter
ATE349067T1 (de) * 2004-08-23 2007-01-15 Abb Technology Ag Hochleistungsschalter mit bewegungsumkehr
FR2877136B1 (fr) * 2004-10-27 2006-12-15 Areva T & D Sa Cinematique d'entrainement dans un disjoncteur hybride
FR2924267A1 (fr) * 2007-11-22 2009-05-29 Areva T & D Sa Disjoncteur haute tension a echappement de gaz ameliore
FR2947377B1 (fr) * 2009-06-29 2011-07-22 Areva T & D Sa Valve a clapet de decharge destinee a decharger un gaz dielectrique entre deux volumes d'une chambre de coupure de disjoncteur haute ou moyenne tension
WO2013013112A1 (en) 2011-07-20 2013-01-24 Pennsylvania Breaker, Llc Gas blast interrupter
JP6289856B2 (ja) * 2013-10-16 2018-03-07 株式会社東芝 ガス遮断器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331935A (en) * 1964-12-21 1967-07-18 Westinghouse Electric Corp Gas-blast circuit breaker having dual piston means providing double-acting puffer arrangement
DE3930548A1 (de) * 1989-09-13 1991-03-21 Licentia Gmbh Schalter mit selbsterzeugter lichtbogenbeblasung
EP0540971A1 (de) * 1991-11-04 1993-05-12 Gec Alsthom Sa Hoch- oder Mittelspannungsschalter mit Dreifachbewegung
FR2753564A1 (fr) * 1996-09-17 1998-03-20 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage et compression reduite
EP0895262A1 (de) * 1997-07-24 1999-02-03 Gec Alsthom T & D Sa Gasschalter mit komprimierbaren Volum und Wärmeausdehnung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741399B1 (de) * 1995-05-04 1999-01-20 ANSALDO INDUSTRIA S.p.A. Hochspannungsschalter mit dielektrischem Gas mit Selbst-Beblasung
FR2767221B1 (fr) * 1997-08-11 1999-09-10 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage et a compression reduite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331935A (en) * 1964-12-21 1967-07-18 Westinghouse Electric Corp Gas-blast circuit breaker having dual piston means providing double-acting puffer arrangement
DE3930548A1 (de) * 1989-09-13 1991-03-21 Licentia Gmbh Schalter mit selbsterzeugter lichtbogenbeblasung
EP0540971A1 (de) * 1991-11-04 1993-05-12 Gec Alsthom Sa Hoch- oder Mittelspannungsschalter mit Dreifachbewegung
FR2753564A1 (fr) * 1996-09-17 1998-03-20 Gec Alsthom T & D Sa Disjoncteur a auto-soufflage et compression reduite
EP0895262A1 (de) * 1997-07-24 1999-02-03 Gec Alsthom T & D Sa Gasschalter mit komprimierbaren Volum und Wärmeausdehnung

Also Published As

Publication number Publication date
FR2807870B1 (fr) 2002-05-24
DE60107747T2 (de) 2006-02-23
CA2344256C (fr) 2003-11-11
US6489581B2 (en) 2002-12-03
EP1148527B1 (de) 2004-12-15
DE60107747D1 (de) 2005-01-20
US20010035396A1 (en) 2001-11-01
CA2344256A1 (fr) 2001-10-18
FR2807870A1 (fr) 2001-10-19
ATE285116T1 (de) 2005-01-15

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