EP3300097B1 - Einschaltsystem einer vakuumröhre - Google Patents

Einschaltsystem einer vakuumröhre Download PDF

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Publication number
EP3300097B1
EP3300097B1 EP17189168.2A EP17189168A EP3300097B1 EP 3300097 B1 EP3300097 B1 EP 3300097B1 EP 17189168 A EP17189168 A EP 17189168A EP 3300097 B1 EP3300097 B1 EP 3300097B1
Authority
EP
European Patent Office
Prior art keywords
movable electrode
actuation system
adjusting nut
locking
electrical connection
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.)
Active
Application number
EP17189168.2A
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English (en)
French (fr)
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EP3300097A1 (de
Inventor
François Famy
Patrice Grosjean
Pierre Newinger
Daniel Reviron
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3300097A1 publication Critical patent/EP3300097A1/de
Application granted granted Critical
Publication of EP3300097B1 publication Critical patent/EP3300097B1/de
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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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to a system for actuating a vacuum interrupter for the purpose of opening an electrical circuit in a medium voltage or high voltage electrical connection apparatus, that is to say an apparatus operating at a voltage greater than 1000V.
  • the invention also relates to an electrical connection device comprising such an actuation system for at least one of its phases.
  • electrical connection device interchangeably includes several types of electrical devices such as a switch, a circuit breaker, a contactor, a fuse switch, a recloser, etc.
  • a medium voltage or high voltage electrical connection device of the type described in the document EP2182536 comprises a vacuum interrupter which is placed not in the main circuit comprising the main switch of one phase of the apparatus, but in a parallel branch of this main switch.
  • a vacuum interrupter which is placed not in the main circuit comprising the main switch of one phase of the apparatus, but in a parallel branch of this main switch.
  • main switch opening mechanism which first allows the current to be gradually switched from the main circuit to the bypass. , which allows the main switch to be opened while the current is flowing fully through the vacuum interrupter. This is then opened in turn by the opening mechanism. This prevents the appearance of an electric cutting arc at the level of the main switch during the opening operation.
  • the vacuum interrupter receives a current only during the opening phase of the main phase circuit, and not during normal operation.
  • the bulb is not stressed during a closing operation of the main circuit and it does not have to withstand any short-circuit current either. It just needs to be able to withstand a Transient Recovery Voltage (TRV) after the power is cut in the main circuit.
  • TRV Transient Recovery Voltage
  • the vacuum interrupter can advantageously be simplified and made of a much smaller size compared to a conventional architecture in which the vacuum interrupter is placed in the main circuit of the electrical connection apparatus.
  • the opening mechanism which makes it possible to gradually switch the current from the main circuit to the bypass and then to open the vacuum interrupter placed in the bypass must be very precise and reproducible to ensure on the one hand that, for each phase, the opening of the vacuum interrupter is only carried out correctly once the main switch is already sufficiently open so as not to risk an electric arc on the main switch, and on the other hand that the bulbs vacuum of the different phases of the device are open simultaneously.
  • EP 1,139,358 and EP1139367 disclose electrical connection apparatus having a mechanism including an adjusting nut which serves to change the contact pressure of a vacuum interrupter.
  • One of the aims of the invention is to find a simple, reliable and economical system which makes it possible both to perform the opening movement of a vacuum interrupter and to be able to easily and precisely adjust the time of triggering of this. opening movement.
  • the driving device comprises a hoop acting against a rim of the adjusting nut to drive the movable electrode towards the open position.
  • the locking device comprises a locking screw making it possible to prevent the rotation of the adjusting nut.
  • the locking device comprises a locking ring removably mounted on the driving device and comprising notches which cooperate with teeth of the adjusting nut. The removable locking ring is snapped onto two lateral projections of the training device.
  • the actuation system comprises a threaded ring and a sleeve which is fixed to the movable electrode and driven by the threaded ring, the threaded ring being provided with an external thread cooperating with an internal thread of the adjusting nut for adjusting the position of the adjusting nut relative to the movable electrode.
  • the sleeve is fixed to the movable electrode by a transverse fixing screw which also serves to electrically connect the movable electrode to a connecting cable of the main circuit of the electrical connection device.
  • the actuation system comprises a threaded ring, a stud screwed to the end of the mobile electrode and a screw for fixing the ring with the stud, the threaded ring being provided with an external thread cooperating with an internal thread of the adjusting nut to adjust the position of the adjusting nut relative to the movable electrode. It also comprises an anti-torsion device provided with longitudinal grooves cooperating with corresponding grooves of the stud.
  • the invention also describes an electrical connection device comprising a main phase switch and such a system for actuating a vacuum interrupter, the vacuum interrupter being placed as a bypass from the main phase switch.
  • the device for driving the vacuum interrupter moves under the action of an opening mechanism of the main phase switch.
  • an electrical connection device comprises a main phase switch and a vacuum interrupter which is placed as a bypass from the main switch.
  • the vacuum interrupter 1 is mounted in a support 5.
  • the vacuum interrupter 1 comprises a movable conductive electrode 2 (also called a movable rod) and a fixed conductive electrode 3 (also called a fixed rod).
  • the movable electrode 2 is movable longitudinally between a so-called closed position in which the two electrodes 2, 3 are in contact with one another and a so-called open position in which the two electrodes 2, 3 are separated. In all the figures of this document, the vacuum interrupter 1 is shown in the closed position.
  • the mobile electrode 2 of the vacuum interrupter is driven by an actuation system which makes it possible in particular to perform an opening movement of the vacuum interrupter 1, that is to say to pass from the position closed to the open position.
  • the movable electrode 2 can for example be driven by a return spring not shown in the figures.
  • the actuation system comprises a drive device comprising a pallet 25, movable in rotation about a transverse axis 26, and a ring 20 which is secured to the pallet 25 by means of two lateral connecting rods. 21.
  • this drive device moves under the action of a mechanism for opening the main phase switch (not shown in the figures) which acts on the pallet 25.
  • the various figures thus show an arrow schematically showing the thrust exerted by the opening mechanism on the pallet 25 and on the connecting rods 21 during the opening movement of the vacuum interrupter. 1.
  • the device preferably comprises a vacuum interrupter bypassing each switch. main and therefore a vacuum interrupter actuation system for each phase.
  • the opening mechanism acting on the actuation systems of such a device may however be common to all the main switches of the device.
  • the actuation system also comprises an adjusting nut 10 which is linked to the movable electrode 2 and which is capable of rotation to adjust its position with respect to the movable electrode 2.
  • the ring 20 of the driving device abuts against a flange 11 of the adjusting nut 10 so as to be able to drive the movable electrode 2 towards the open position of the vacuum interrupter 1.
  • the adjusting nut 10 therefore fulfills several functions which makes the solution simple and economical to implement. It is used to transmit the movement of the opening mechanism of the connection device to the movable electrode 2 of the vacuum interrupter 1. It is also used to set the precise moment when the fixed 3 and movable 2 electrodes of the 'vacuum interrupter will separate by varying the adjustment between the adjustment nut 10 and the movable electrode 2. In fact, by slightly turning the adjustment nut 10 in one direction or another, one varies the distance between the ring 20 and the flange 11 of the adjusting nut 10, and therefore the instant at which the mobile electrode 2 will begin its opening movement is varied.
  • the adjusting nut 10 thus serves to adjust the opening stroke of the vacuum interrupter 1 and does not modify the contact pressure.
  • the connection between the adjustment nut 10 and the movable electrode 2 is made as follows: the actuation system comprises a threaded ring 15, provided with an external thread cooperating with an internal thread of the control nut.
  • adjustment 10 to adjust the adjustment of the adjustment nut 10 relative to the movable electrode 2, and comprises a sleeve 18 inserted inside the threaded ring 15 and fixed to the movable electrode.
  • the sleeve 18 is fixed to the movable electrode 2 by a transverse fixing screw 19 which passes through the sleeve 18 and the movable electrode 2.
  • the fixing screw 19 is also used to fix a conductive cable (not shown in the figures. figures) which electrically connects the movable electrode 2 of the vacuum interrupter 1 to the electrical connection device.
  • it also makes it possible to wedge the threaded ring 15 between the rim of the sleeve 18 and the screw 19.
  • the threaded ring 15 is arranged to be able to drive the sleeve 18 during the opening movement, for example by virtue of their respective flange as shown in figure 2 , but it is not fixed to the sleeve 18.
  • the threaded ring 15 is advantageously free to rotate relative to the sleeve 18, which avoids any risk of torsion of the mobile electrode 2 and therefore of the sealing bellows. 4 of the vacuum interrupter, when turning the adjusting nut 10.
  • the actuation system further comprises a locking device which makes it possible to fix the position of the adjustment nut 10 with respect to the movable electrode 2, once the adjustment has been carried out.
  • the locking device comprises a locking screw 12, for example of the needle screw type which, once tightened, makes it possible to prevent the rotation of the adjusting nut 10 with respect to the threaded ring 15, and therefore to block its position. relative to the mobile electrode 2.
  • the electrical connection device comprises a vacuum interrupter 1 identical to that described above and mounted in a support 5.
  • the mobile electrode 2 of the vacuum interrupter is driven by an actuation system to perform an opening movement.
  • the movable electrode 2 can in the same way be driven for example by a return spring not shown in the figures.
  • the actuation system comprises a drive device comprising a vane 125, movable in rotation about a transverse axis 126, and a ring 120 which is actuated by the vane 125 via two lateral connecting rods 121.
  • this drive device moves under the action of the opening mechanism of the main phase switch (not shown in the figures) which acts on the pallet 125.
  • the actuation system also comprises an adjustment nut 110 which is linked to the movable electrode 2 and which is capable of rotation to adjust its position with respect to the movable electrode 2.
  • the ring 120 of the drive device abuts against a flange 111 of the adjustment nut 110 so as to be able to drive the movable electrode 2 towards the open position of the vacuum interrupter 1.
  • This adjustment nut 110 therefore serves to transmit the movement of the opening mechanism of the connection device to the mobile electrode 2 of the vacuum interrupter 1 and to adjust the precise instant when the fixed electrodes 3 and mobile 2 of the vacuum interrupter will separate by varying the adjustment between the adjustment nut 110 and the mobile electrode 2.
  • the adjustment nut 110 by slightly turning the adjustment nut 110 in one direction or another, we varies the distance between the flange 111 of the adjusting nut 110 and the ring 120, and therefore the instant at which the mobile electrode 2 will begin its opening movement is varied.
  • the connection between the adjustment nut 110 and the movable electrode 2 is made as follows: the actuation system comprises a threaded ring 115 provided with an external thread cooperating with an internal thread of the adjustment nut 110 to adjust the setting of the adjusting nut 110 relative to the movable electrode 2, and also comprises a stud 116, an anti-twist device 118, a washer 119 and a fixing screw 117.
  • the stud 116 has an internal thread which on one side cooperates with an external thread on the end of the movable electrode 2 and which on the other side cooperates with the fixing screw 117.
  • the screw 117 is introduced in the ring 115, it comes to press against a rim of the ring 115 and, once screwed to the stud 116, keeps the assembly made up of the ring 115, the stud 116, the anti-torsion device 118, the washer 119 and of the mobile electrode 2.
  • the washer 119 is used to fix a conductive cable (not shown in the figures) making it possible to electrically connect the mobile electrode 2 of the vacuum interrupter 1 to the electrical connection device .
  • the anti-torsion device 118 is for example a fixed part which is wedged in the support 5 of the vacuum interrupter 1 and which comprises internal longitudinal grooves cooperating with corresponding external grooves on the stud 116, so that, during the movements of the movable electrode 2, the pin 116 can slide longitudinally but without risk of rotation relative to the support 5.
  • the actuation system further comprises a locking device which makes it possible to fix the position of the adjustment nut 110 with respect to the movable electrode 2, once the adjustment has been carried out.
  • the locking device has a locking ring 112 which is removable. This locking ring 112 is introduced into two lateral projections 122 extending on either side of the ring 20. These projections include, for example, clipping means which make it possible to easily snap the locking ring 112 in order to hold it. in the locked position once the adjustment has been made, and which also allow it to be removed very easily when an operator wants to adjust the position of the adjustment nut 110.
  • the locking of the adjustment nut 110 is ensured by notches in the locking ring 112 which cooperate with teeth 113 of the adjustment nut 110 positioned around its outer periphery to prevent the rotation of the nut 110.
  • the number of teeth / notches determine the fineness of the possible adjustment angle of the adjustment nut 110 with respect to the movable electrode 2.
  • the latter optionally has at its end a shape which makes it possible to manipulate it with a wrench or a tool, such as a hexagonal shape in the example of figure 3 .

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (11)

  1. System zur Betätigung einer Vakuumröhre (1) für ein elektrisches Schaltgerät, wobei das System die Vakuumröhre umfasst, wobei die Vakuumröhre (1) eine bewegliche Elektrode (2) und eine feststehende Elektrode (3) umfasst, wobei die bewegliche Elektrode (2) längs zwischen einer geschlossenen Stellung, in der die beiden Elektroden miteinander in Kontakt sind, und einer geöffneten Stellung, in der die beiden Elektroden getrennt sind, beweglich ist, dadurch gekennzeichnet, dass das Betätigungssystem umfasst:
    - eine Stellmutter (10, 110), die mit der beweglichen Elektrode (2) verbunden ist und drehbar ist, so dass die Stellung der Stellmutter (10, 110) in Bezug auf die bewegliche Elektrode (2) verstellt wird und so der Zeitpunkt, zu dem die bewegliche Elektrode (2) eine Bewegung hin zur geöffneten Stellung beginnt, geändert wird,
    - eine Antriebsvorrichtung (20, 21, 25, 120, 121, 125), die auf die Stellmutter (10, 110) wirkt, um die bewegliche Elektrode (2) zur geöffneten Stellung hin anzutreiben,
    - eine Sicherungsvorrichtung (12, 112) zum Sichern der Stellung der Stellmutter (10, 110) in Bezug auf die bewegliche Elektrode (2).
  2. Betätigungssystem nach Anspruch 1, dadurch gekennzeichnet, dass die Antriebsvorrichtung einen Bügel (20, 120) beinhaltet, der gegen einen Rand (11, 111) der Stellmutter (10, 110) wirkt, um die bewegliche Elektrode (2) zur geöffneten Stellung hin anzutreiben.
  3. Betätigungssystem nach Anspruch 1, dadurch gekennzeichnet, dass die Sicherungsvorrichtung eine Sicherungsschraube (12) beinhaltet, die es ermöglicht, das Drehen der Stellmutter (10) zu verhindern.
  4. Betätigungssystem nach Anspruch 1, dadurch gekennzeichnet, dass die Sicherungsvorrichtung einen Sicherungsring (112) beinhaltet, der lösbar an der Antriebsvorrichtung angebracht ist und Einkerbungen beinhaltet, die mit Zähnen (113) der Stellmutter (110) zusammenwirken.
  5. Betätigungssystem nach Anspruch 4, dadurch gekennzeichnet, dass der lösbare Sicherungsring (112) an zwei seitlichen Auskragungen (122) der Antriebsvorrichtung (120) eingerastet ist.
  6. Betätigungssystem nach Anspruch 1, dadurch gekennzeichnet, dass es einen Gewindering (15) umfasst und eine Hülse (18), die an der beweglichen Elektrode (2) befestigt ist und von dem Gewindering (15) angetrieben wird, wobei der Gewindering (15) mit einem Außengewinde versehen ist, das mit einem Innengewinde der Stellmutter (10) zusammenwirkt, um die Stellung der Stellmutter (10) in Bezug auf die bewegliche Elektrode (2) zu verstellen.
  7. Betätigungssystem nach Anspruch 6, dadurch gekennzeichnet, dass die Hülse (18) an der beweglichen Elektrode (2) mit einer quer verlaufenden Befestigungsschraube (19) befestigt ist, die auch dazu dient, die bewegliche Elektrode (2) elektrisch an ein Anschlusskabel des Hauptkreises des elektrischen Schaltgeräts anzuschließen.
  8. Betätigungssystem nach Anspruch 1, dadurch gekennzeichnet, dass es einen Gewindering (115), einen an das Ende der beweglichen Elektrode (2) geschraubten Bolzenanker (116) und eine Schraube (117) zur Befestigung des Rings (115) mit dem Bolzenanker (116) umfasst, wobei der Gewindering (115) mit einem Außengewinde versehen ist, das mit einem Innengewinde der Stellmutter (110) zusammenwirkt, um die Stellung der Stellmutter (110) in Bezug auf die bewegliche Elektrode (2) zu verstellen.
  9. Betätigungssystem nach Anspruch 8, dadurch gekennzeichnet, dass es auch eine Verdrehsicherungsvorrichtung (118) umfasst, die mit Längsriffelungen versehen ist, die mit entsprechenden Riffelungen des Bolzenankers (116) zusammenwirken.
  10. Elektrisches Schaltgerät, das mit einem Phasenhauptschalter und einer vom Phasenhauptschalter abzweigend angeordneten Vakuumröhre versehen ist, dadurch gekennzeichnet, dass das elektrische Schaltgerät ein System zur Betätigung der Vakuumröhre nach einem der vorhergehenden Ansprüche beinhaltet.
  11. Elektrisches Schaltgerät nach Anspruch 10, dadurch gekennzeichnet, dass sich die Antriebsvorrichtung der Vakuumröhre unter der Einwirkung eines Öffnungsmechanismus des Phasenhauptschalters bewegt.
EP17189168.2A 2016-09-23 2017-09-04 Einschaltsystem einer vakuumröhre Active EP3300097B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1658958A FR3056823B1 (fr) 2016-09-23 2016-09-23 Systeme d'actionnement d'une ampoule a vide

Publications (2)

Publication Number Publication Date
EP3300097A1 EP3300097A1 (de) 2018-03-28
EP3300097B1 true EP3300097B1 (de) 2021-11-03

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US (1) US10217581B2 (de)
EP (1) EP3300097B1 (de)
CN (1) CN107871640B (de)
FR (1) FR3056823B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3089342B1 (fr) 2018-12-04 2021-09-17 Schneider Electric Ind Sas Système d'actionnement pour une ampoule à vide
FR3093226B1 (fr) 2019-02-25 2021-01-22 Schneider Electric Ind Sas Système d'actionnement pour une ampoule à vide
EP4276871A1 (de) * 2022-05-12 2023-11-15 ABB Schweiz AG Verfahren zum zusammenbauen eines schaltgeräts für elektrische mittelspannungssysteme

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1139358A1 (de) * 2000-03-31 2001-10-04 Schneider Electric Industries SA Elektrisches Schaltgerät mit einer Vakuumröhre und eine flexible elektrische Verbindung

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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1139358A1 (de) * 2000-03-31 2001-10-04 Schneider Electric Industries SA Elektrisches Schaltgerät mit einer Vakuumröhre und eine flexible elektrische Verbindung

Also Published As

Publication number Publication date
FR3056823A1 (fr) 2018-03-30
EP3300097A1 (de) 2018-03-28
US10217581B2 (en) 2019-02-26
CN107871640B (zh) 2021-04-09
FR3056823B1 (fr) 2018-10-12
US20180090288A1 (en) 2018-03-29
CN107871640A (zh) 2018-04-03

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