EP0905730A1 - Steuervorrichtung für elektrisches Gerät, z.b. Hochspannungsleistungsschalter - Google Patents

Steuervorrichtung für elektrisches Gerät, z.b. Hochspannungsleistungsschalter Download PDF

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Publication number
EP0905730A1
EP0905730A1 EP98402332A EP98402332A EP0905730A1 EP 0905730 A1 EP0905730 A1 EP 0905730A1 EP 98402332 A EP98402332 A EP 98402332A EP 98402332 A EP98402332 A EP 98402332A EP 0905730 A1 EP0905730 A1 EP 0905730A1
Authority
EP
European Patent Office
Prior art keywords
piston
enclosure
control according
valve
gas
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.)
Withdrawn
Application number
EP98402332A
Other languages
English (en)
French (fr)
Inventor
Edmond Thuries
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
GEC Alsthom T&D SA
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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0905730A1 publication Critical patent/EP0905730A1/de
Withdrawn legal-status Critical Current

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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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Definitions

  • the present invention relates to an order for electrical appliance, for example for high circuit breaker voltage.
  • an order for electrical appliance in particular for high circuit breaker voltage, housed in an envelope filled with dielectric gas under pressure forming a breaking chamber and comprising a part intended to be translated using said command which comprises an operating piston sliding in a cylindrical element fixed to the end of the envelope and connected at its opposite end to the device from the side of the active side of the piston, to a communication conduit with the interior of the envelope via a valve in the engaged position, this valve being able to take a second position, trigger position, where the gas stressing the active face of the piston is discharged from said cylindrical element.
  • said conduct of communication has an orifice open to the air atmospheric and a double seat valve which, in position closing, closes the conduit allowing the passage of the gas from the interrupting chamber to the active face of the piston and, in the release position, closes the part of the duct communicating with the breaking chamber to open the orifice towards the part of the conduit communicating with the cylindrical element causing the evacuation of gas to the outside and the decrease in pressure on the face active piston and the separation of the contacts of the circuit breaker.
  • the invention proposes an improvement of such a command allowing resetting operations, quick opening and closing.
  • the rod, the operating piston and the vacuum piston are aligned, the displacements thus being linear in the axis of the device.
  • the enclosure is advantageously fitted with a pressure switch controlling the drive mechanism, when the pressure in the enclosure is greater than a setpoint.
  • the actuation valve is a valve sliding double drawer and double seat powered by two pilot, pressurizing and setting valves depression.
  • said communication conduit is made in the wall of the cylindrical element.
  • said evacuation check valve gas from the enclosure is disposed at the mouth of a conduit gas evacuation to the enclosure of the break.
  • said exhaust duct is produced in the wall of the enclosure.
  • a permanent vacuum is applied to the annular section of the operating piston.
  • the operating piston can consist of two parts, one of small section and total travel sliding in the other with a large section and reduced stroke.
  • a spring can stress the piston operating in the latching position.
  • said drive mechanism is consisting of a motor whose shaft is connected to the piston of depression under a thread.
  • a spring can stress the setting piston vacuum, in order to reduce the effort required from the engine.
  • Figures 1A and 1B show a sectional view longitudinal of an order according to the invention, in trigger start position (or opening).
  • Figure 2 is a longitudinal sectional view partial, in the triggered position.
  • Figure 3 is a longitudinal sectional view partial, in position of start of engagement (or closing).
  • Figure 4 is a longitudinal sectional view partial of a first variant embodiment, in trigger start position.
  • Figure 5 is a longitudinal sectional view partial view of this first variant, in end of trip position.
  • Figure 6 is a longitudinal sectional view partial view of a second variant, in position start of engagement.
  • Figure 7 is a longitudinal sectional view partial view of a third alternative embodiment, in trigger start position.
  • Figure 8 is a longitudinal sectional view partial view of this third variant, in end of trip position.
  • Figure 9 is a longitudinal sectional view partial of an alternative embodiment of the mechanism training.
  • a high voltage circuit breaker is housed in an envelope 1, here in material insulating but may be metallic, filled with gas dielectric under pressure forming a breaking chamber.
  • the mobile contacts of the circuit breaker are linked to a rod 3 intended to be translated using the command.
  • this rod 2 is fixed to an operating piston 3 sliding in a cylindrical element 4 fixed at the end of the casing 1 and provided with an outlet orifice 19.
  • the piston 3 is a differential piston, its active face 3A being greater than its opposite face 3B to which is fixed for example by screwing the rod 2.
  • the interior of the cylindrical element 4 is connected to a conduit 6 of communication with the interior of envelope 1 by via an actuating valve 7 in the position of interlocking operation as shown in the Figure 3.
  • the communication conduit 6 is made in the wall of the cylindrical element 4.
  • This valve 7 can take a second position, release position as shown in the Figure 1, where the gas requesting the active face 3A of the piston 3 is evacuated from the cylindrical element 4 to a vacuum enclosure 8.
  • This actuation valve 7 is a sliding valve with double drawer 7A, 7B and with double sealing seat 4A, 4B and is actuated by two pilot valves 17, 18 moved by electromagnets 17A, 18A enclosed in housings waterproof.
  • the pilot valve 17 is supplied with pressure and, actuated, it pushes the wall 7C of the valve actuation 7, causing the application of the drawer 7B on the seat 4B formed by a shoulder on the outlet orifice 19 of the cylindrical element 4 and ensuring the opening of the passage of enclosure 4 towards the interior of envelope 1 of the breaking chamber and the closure of the passage of the cylindrical element 4 towards the enclosure 8, as shown in figure 3.
  • the pilot valve 18 is supplied with vacuum and, actuated, it pulls the wall 7C of the actuation valve 7, causing the application of the drawer 7A on the seat 4A formed of the shoulder on the outlet orifice 19 of the cylindrical element 4 and ensuring the closure of the passage from enclosure 4 to the interior of envelope 1 of breaking chamber and opening of the element passage cylindrical 4 to enclosure 8, as shown in figure 1.
  • Drawers 7A, 7B prevent gas communication in pressure and gas in depression when moving valve 7.
  • a very small orifice 22 self-feeding allows the actuation valve 7 to maintain in the position which it has received orders from pilot valves 17, 18, after closing thereof.
  • the vacuum enclosure 8 is connected to the cylindrical element 4, advantageously formed from a single part therewith, and has at least one check valve 9 gas discharge on its face opposite to the device.
  • a vacuum piston 10 slides in this enclosure 8, the active face 10A of which faces the operating piston 3 and equipped with at least one valve check valve 11 allowing only the passage of gas from the active side 10A towards the rear of the piston 10.
  • the non-return valve 9 gas discharge from the enclosure is arranged to the mouth of a gas discharge pipe 20 to inside the casing 1 of the switching chamber.
  • this discharge duct 20 is produced in the wall of the enclosure 8.
  • a reciprocating drive mechanism of the piston depression 10 consists of a motor 12 of which the shaft 16 is connected to the vacuum piston 10 by a thread, preferably a thread made on the shaft cooperating with a nut 13 secured to the piston 10.
  • a spring 14 urges the vacuum piston 10.
  • This drive mechanism is housed in a housing 15 fixed on enclosure 8.
  • the enclosure is equipped with a pressure switch 21 commanding the drive mechanism, when the prevailing pressure in the enclosure is greater than a set value.
  • the actuation valve 7 has been moved to the pulled position thanks to the pilot vacuum valve 18, ensuring the passage of the cylindrical element 4 towards the enclosure 8.
  • the vacuum piston 10 is moved to its position pulled (i.e. down seen in the figure) and the gas contained in the cylindrical element 4 is discharged towards the enclosure 8.
  • the operating piston 3 moves (downwards seen according to the figure) and causes the opening of the contacts of the circuit breaker to come into the release position shown on the figure 2.
  • valve actuator 7 To reset the circuit breaker, the valve actuator 7 is moved to the pushed position thanks to the pilot vacuum valve 17, ensuring the passage of the cylindrical element 4 towards the inside of the envelope 1 of the circuit breaker as shown in figure 3.
  • the element cylindrical 4 is filled with dielectric gas under pressure, the operating piston 3 moves (pushed up seen according to the figure) and causes the closure of the contacts of the circuit breaker to come into the on position shown in Figure 1.
  • the rest position of the vacuum piston 10 is the pulled position (low view according to the figures) but thanks to the sufficient number of check valves 11, the vacuum still prevails above piston 10, in communication with the actuation valve 7, ensuring fast maneuver.
  • the operating piston 3 consists of two parts 31, 32, one 31 of weak section and total stroke sliding in the other 32 of large section and reduced stroke.
  • the part 32 consists of a cylindrical sleeve which can slide in the element cylindrical 4 on a short stroke performed by a annular shoulder arrangement on the part 32 housed in an annular bore made in the cylindrical element 4 and delimiting a volume V4 'in communication through orifices with the interior of the cylindrical element 4.
  • Part 31 consists of a conventional piston sliding in this folder 32 and defining a volume V4 " in the cylindrical element 4 in the engaged position.
  • the annular face of the two parts 31, 32 is placed in depression through the duct 5.
  • the gas volume is then equal to V4 '+ V4 "and is minimal.
  • a spring 22 stresses the operating piston 3 in position of engagement. It is no longer necessary to plan a depression on the annular face of the piston 3 as previously.
  • the operating piston 3 consists of two parts 31, 32, one 31 of low section and total stroke sliding in the other 32 of large section and reduced stroke and is stressed by a spring 22 in the engaged position.
  • This last variant combines the characteristics of the first variant and the second variant.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Circuit Breakers (AREA)
  • Actuator (AREA)
  • Gas-Insulated Switchgears (AREA)
EP98402332A 1997-09-25 1998-09-23 Steuervorrichtung für elektrisches Gerät, z.b. Hochspannungsleistungsschalter Withdrawn EP0905730A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711936A FR2768855B1 (fr) 1997-09-25 1997-09-25 Commande pour appareil electrique, par exemple disjoncteur haute tension
FR9711936 1997-09-25

Publications (1)

Publication Number Publication Date
EP0905730A1 true EP0905730A1 (de) 1999-03-31

Family

ID=9511464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402332A Withdrawn EP0905730A1 (de) 1997-09-25 1998-09-23 Steuervorrichtung für elektrisches Gerät, z.b. Hochspannungsleistungsschalter

Country Status (6)

Country Link
US (1) US6064025A (de)
EP (1) EP0905730A1 (de)
CN (1) CN1213151A (de)
CA (1) CA2245161A1 (de)
FR (1) FR2768855B1 (de)
ID (1) ID21055A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017117B (zh) * 2017-05-16 2019-07-23 无锡市华通气动制造有限公司 一种用于动车真空断路器的气动执行系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003321B (de) * 1954-10-06 1957-02-28 Liebknecht Transformat Hochspannungsdruckgasschalter
GB770100A (en) * 1954-06-04 1957-03-13 Asea Ab Operating device for air blast electric circuit breakers
DE1036982B (de) * 1955-10-25 1958-08-21 Voigt & Haeffner Ag Pneumatisch wirkende Vorrichtung zum Erzeugen einer Bewegung mit Mitteln zur Umsteuerung der Bewegungsrichtung fuer die Steuerung elektrischer Schaltgeraete

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118613A (en) * 1977-06-27 1978-10-03 General Electric Company Hydraulically-actuated operating system for an electric circuit breaker
US4166937A (en) * 1978-05-18 1979-09-04 General Electric Company Hydraulically-activated operating system for an electric circuit breaker
SE9101831L (sv) * 1991-06-14 1993-03-10 Asea Brown Boveri Saekerhetsbrytare med lutningsindikering

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB770100A (en) * 1954-06-04 1957-03-13 Asea Ab Operating device for air blast electric circuit breakers
DE1003321B (de) * 1954-10-06 1957-02-28 Liebknecht Transformat Hochspannungsdruckgasschalter
DE1036982B (de) * 1955-10-25 1958-08-21 Voigt & Haeffner Ag Pneumatisch wirkende Vorrichtung zum Erzeugen einer Bewegung mit Mitteln zur Umsteuerung der Bewegungsrichtung fuer die Steuerung elektrischer Schaltgeraete

Also Published As

Publication number Publication date
US6064025A (en) 2000-05-16
CN1213151A (zh) 1999-04-07
ID21055A (id) 1999-04-08
FR2768855A1 (fr) 1999-03-26
CA2245161A1 (fr) 1999-03-25
FR2768855B1 (fr) 1999-11-12

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