EP0758794B1 - Dispositif de surveillance du vide d'un disjoncteur sous vide - Google Patents

Dispositif de surveillance du vide d'un disjoncteur sous vide Download PDF

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Publication number
EP0758794B1
EP0758794B1 EP96110096A EP96110096A EP0758794B1 EP 0758794 B1 EP0758794 B1 EP 0758794B1 EP 96110096 A EP96110096 A EP 96110096A EP 96110096 A EP96110096 A EP 96110096A EP 0758794 B1 EP0758794 B1 EP 0758794B1
Authority
EP
European Patent Office
Prior art keywords
vacuum
switch
interrupter
surface wave
monitoring
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
Application number
EP96110096A
Other languages
German (de)
English (en)
Other versions
EP0758794A1 (fr
Inventor
Reinhard Dr. Maier
Wolf-Eckhart Bulst
Thomas Ostertag
Oliver Sczesny
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0758794A1 publication Critical patent/EP0758794A1/fr
Application granted granted Critical
Publication of EP0758794B1 publication Critical patent/EP0758794B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/60—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
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • 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
    • H01H33/668—Means for obtaining or monitoring the vacuum
    • H01H2033/6686—Means for obtaining or monitoring the vacuum by emitting and receiving reflected sound or ultrasound signals

Definitions

  • the present invention relates to a device for Monitoring the vacuum of a vacuum switch.
  • Vacuum switches can do their job, currents and in particular Interrupt short-circuit currents, only if a certain minimum vacuum in the vacuum interrupter is. If this is no longer the case due to a leak, you can in extreme cases, the shutdown will destroy the Tubes with possible further consequential damage. So far it was assumed that a vacuum loss in the Switch tube does not appear even after a long time. Because of the consequential damage associated with such a vacuum loss there is nevertheless a desire to find the inside pressure one in the Check the switchgear of the built-in vacuum switch can without removing the switch tube from the container.
  • the present invention has for its object a Device for monitoring the vacuum of a vacuum switch to indicate that avoids the disadvantages mentioned, i.e. that a measurement with both open and closed Condition is possible during operation.
  • the device according to the invention comprises a remotely interrogable Surface wave filter, which is a purely passive component represents and requires no power supply.
  • the vacuum switching tube 1 shown in FIG its switching chamber a fixed first switching contact 2 and a second, movably arranged second Switch contact 3 on.
  • the actual switching chamber is in the essentially formed from a ceramic tube 4 in which the two switching contacts 2 and 3 are arranged concentrically.
  • the vacuum switch tube is closed by a flexible metal bellows 5.
  • a remote-sensing pressure transducer 6 arranged by the remote query device 7 can be queried.
  • the pressure cell shown in Figure 2 consists of a Bottom 8, a ring 9 and a lid a surface wave filter 10.
  • the shape of this pressure cell can be square, but preferably be circular. Suitable dimensions for the box is 2 mm high and 10 mm in diameter for the pressure cell.
  • the inside of the pressure cell can be evacuated or with be filled with a gas. In any case, the load cell hermetically sealed. Is the inside of the pressure cell evacuated, so learn the lid 8 and 10 of the pressure cell no curvature as long as the load cell remains intact Vacuum of the vacuum interrupter 1 is located. Will the vacuum disturbed, the pressure in the vacuum interrupter 1 increases, so the lid 8 and 10 of the pressure cell inside arched.
  • Such a surface wave filter comprises, as an essential component, a substrate body 11, which in most cases is made of piezoelectric, preferably monocrystalline material.
  • a suitable material for the substrate body 11 becomes quartz, lithium niobate, lithium tantalate and the like.
  • an interdigital converter 12 On the surface of the substrate body 11 are an interdigital converter 12, one herewith connected antenna 13 and reflectors 14 are provided.
  • the antenna 13 takes this query pulse and leads it to the interdigital converter 12, which an acoustic wave is generated from this in the substrate body 11, those from the reflector 14 back into the interdigital transducer 12 is reflected, and from there via the antenna 13 is emitted as a response signal 16.
  • the reflector 14 can be coded in a known manner so that a corresponding coded response signal is reached. This response signal 16 is in turn picked up by the remote interrogation device 7.
  • the ability of the surface acoustic wave device shown in Figure 3 to control the vacuum in a vacuum switching tube arises from the property of the substrate body 11 to be sensitive to draft and pressure. In particular, the Distance of the response pulses or their phase relationship from the push-pull condition dependent on the crystal. It should be noted that a surface wave device as shown in Figure 3 shown, no power supply needed as it is completely is passive.
  • a surface wave device can also without the arrangement in a pressure cell according to Figure 2 as a sensor Find use because of the spread of acoustic Waves is also dependent on the ambient atmosphere, so that when air enters the vacuum interrupter, the wave propagation changed on the surface wave device becomes.
  • the surface wave device about like the pressure sensor 6 in Figure 1, such is arranged that no shielding of the electromagnetic Waves from and to the remote interrogator 7 take place. This will e.g. thereby ensuring that the ceramic tube 4 for electromagnetic Waves is permeable.

Landscapes

  • Measuring Fluid Pressure (AREA)

Claims (5)

  1. Dispositif de surveillance du vide d'un disjoncteur sous vide, comprenant au moins un tube de commutation à vide (1) avec une chambre de commutation et des contacts de commutation (2, 3), comprenant un capteur de pression (6) interrogeable à distance situé à l'intérieur du tube de commutation à vide et un dispositif d'interrogation à distance, le capteur de pression (6) comprenant un dynamomètre (6) dont une paroi est formée par un monocristal piézo-électrique sur lequel est placé un filtre à ondes de surface (10) ou résonateur à ondes de surface interrogeable par radio.
  2. Dispositif selon la revendication 1, dans lequel le dispositif d'interrogation à distance comprend un émetteur (7), un récepteur et un dispositif d'analyse.
  3. Dispositif selon l'une des revendications 1 ou 2, dans lequel le capteur de pression est situé sur une partie isolante, notamment un tube en céramique (4) du tube de commutation à vide (1).
  4. Dispositif selon l'une ou plusieurs des revendications 1 à 3, dans lequel, pour plusieurs tubes de commutation à vide d'un disjoncteur sous vide, notamment trois tubes de commutation, on prévoit un dispositif d'interrogation à distance commun.
  5. Dispositif selon l'une ou plusieurs des revendications 1 à 4, dans lequel un élément de capteur à ondes de surface, passif et interrogeable à distance, partiellement protégé par un masque, est situé sur le côté de l'éclateur et détecte le brûlage des électrodes.
EP96110096A 1995-08-10 1996-06-21 Dispositif de surveillance du vide d'un disjoncteur sous vide Expired - Lifetime EP0758794B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19529499 1995-08-10
DE19529499 1995-08-10

Publications (2)

Publication Number Publication Date
EP0758794A1 EP0758794A1 (fr) 1997-02-19
EP0758794B1 true EP0758794B1 (fr) 2000-02-23

Family

ID=7769217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110096A Expired - Lifetime EP0758794B1 (fr) 1995-08-10 1996-06-21 Dispositif de surveillance du vide d'un disjoncteur sous vide

Country Status (3)

Country Link
US (1) US5739419A (fr)
EP (1) EP0758794B1 (fr)
DE (1) DE59604482D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3788148B2 (ja) 1999-12-16 2006-06-21 株式会社日立製作所 真空スイッチ及びその運転方法
US6418791B1 (en) 2000-03-22 2002-07-16 Abb Technology Ag System and method for acoustic integrity monitoring
FR2868197B1 (fr) * 2004-03-25 2006-05-19 Areva T & D Sa Dispositif de commande pour l'actionnement coordonne d'au moins deux appareils de commutation dont un est a coupure dans le vide
DE102004047699A1 (de) * 2004-09-30 2006-04-13 Siemens Ag Anordnung eines Bauteils und einer Kontrollvorrichtung des Bauteils mit Zeitbereichsreflektometer und Verwendung der Anordnung
US7198981B2 (en) * 2004-10-21 2007-04-03 Honeywell International Inc. Vacuum sealed surface acoustic wave pressure sensor
US7383733B2 (en) * 2005-09-30 2008-06-10 Jennings Technology Method and apparatus for the sonic detection of high pressure conditions in a vacuum switching device
DE102007021172B4 (de) * 2007-05-05 2010-11-18 Refractory Intellectual Property Gmbh & Co. Kg Verwendung eines Sensors
US20090039864A1 (en) * 2007-08-06 2009-02-12 Honeywell International, Inc. Wireless corrosion sensor
FR2931310B1 (fr) * 2008-05-16 2010-10-29 Areva T & D Sa Mesure de temperature a l'interieur d'enveloppes de materiels electriques sous tension
FR3023650B1 (fr) * 2014-07-10 2016-08-19 Alstom Technology Ltd Interrupteur isole par du vide autorisant un test du vide, ensemble d'interrupteur et procede de test
US10566158B2 (en) * 2017-12-13 2020-02-18 Finley Lee Ledbetter Method for reconditioning of vacuum interrupters

Family Cites Families (22)

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US1014287A (en) * 1909-12-14 1912-01-09 Novelty Incandescent Lamp Company Incandescent-electric-lamp leak-tester.
US3012432A (en) * 1957-09-23 1961-12-12 Richard H Moore Leak tester
US3403297A (en) * 1966-03-17 1968-09-24 Gen Electric Vacuum-type circuit interrupter with pressure-monitoring means
DE2002686A1 (de) * 1969-07-30 1971-02-04 Inst Prueffeld Fuer Elek Sche Verfahren und Vorrichtung zur Pruefung des Gasdruckes in Vakuumschaltkammern
DE7029349U (de) * 1970-08-04 1970-10-29 Max Planck Gesellschaft Autoklav fuer drucksprungrelaxationsmessungen.
US3667281A (en) * 1970-11-04 1972-06-06 Charles F Pfeifer Vacuum tester for packages with flexible covers
FR2178762B1 (fr) * 1972-04-05 1974-08-02 Alsthom Cgee
US4033174A (en) * 1973-07-27 1977-07-05 U.S. Philips Corporation Device for testing any leakage of vacuum-tight glass seals
US4163130A (en) * 1975-07-25 1979-07-31 Hitachi, Ltd. Vacuum interrupter with pressure monitoring means
AU555075B2 (en) * 1981-01-19 1986-09-11 Westinghouse Electric Corporation Vacuum monitoring device on vacuum switch
US4440995A (en) * 1981-01-19 1984-04-03 Westinghouse Electric Corp. Vacuum circuit interrupter with on-line vacuum monitoring apparatus
DE3126615A1 (de) * 1981-07-06 1983-01-20 Kollsman System-Technik GmbH, 8000 München Vorrichtung zur druckmessung
DE3270153D1 (en) * 1981-10-30 1986-04-30 Meidensha Electric Mfg Co Ltd Vacuum monitor for vacuum interrupter and use of the vacuum monitor
US4462257A (en) * 1982-09-29 1984-07-31 The United States Of America As Represented By The Secretary Of The Army Strain sensitive ultrasonic surface wave detector
DE3347176A1 (de) * 1983-12-27 1985-07-04 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum messen des innendrucks eines betriebsmaessig eingebauten vakuumschalters
DE3702009C2 (de) * 1987-01-22 1994-11-10 Siemens Ag Einrichtung zur Überwachung des Vakuums einer Vakuumschaltröhre
DE3743868A1 (de) * 1987-09-30 1989-07-06 Siemens Ag Verfahren und vorrichtung zum vakuumnachweis bei vakuumschaltroehren
DE3817743C1 (fr) * 1988-05-25 1990-03-08 Hoffmann & Co. Elektrokohle Kg, Steeg, At
DD276358A1 (de) * 1988-10-21 1990-02-21 Buchwitz Otto Starkstrom Verfahren und anordnung zur ermittlung des innendruckes eines evakuierten gefaessen, insbesondere einer vakuumschaltkammern
CN1039853C (zh) * 1991-09-17 1998-09-16 旭光学工业株式会社 防水机壳的测试方法
JP3168751B2 (ja) * 1992-04-02 2001-05-21 富士電機株式会社 真空バルブの真空漏れ検知方法および装置
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Also Published As

Publication number Publication date
US5739419A (en) 1998-04-14
DE59604482D1 (de) 2000-03-30
EP0758794A1 (fr) 1997-02-19

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