EP0425736B1 - Eclateur de commutation déclenchable - Google Patents

Eclateur de commutation déclenchable Download PDF

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Publication number
EP0425736B1
EP0425736B1 EP89250072A EP89250072A EP0425736B1 EP 0425736 B1 EP0425736 B1 EP 0425736B1 EP 89250072 A EP89250072 A EP 89250072A EP 89250072 A EP89250072 A EP 89250072A EP 0425736 B1 EP0425736 B1 EP 0425736B1
Authority
EP
European Patent Office
Prior art keywords
electrode
spark gap
main
main electrode
switching spark
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
EP89250072A
Other languages
German (de)
English (en)
Other versions
EP0425736A1 (fr
Inventor
Jürgen Dipl.-Ing. Boy
Matthias Dipl.-Ing. Jacubeit
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
Priority to DE58909356T priority Critical patent/DE58909356D1/de
Priority to EP89250072A priority patent/EP0425736B1/fr
Priority to ES89250072T priority patent/ES2076204T3/es
Priority to JP2295176A priority patent/JP2873077B2/ja
Priority to US07/606,150 priority patent/US5151630A/en
Publication of EP0425736A1 publication Critical patent/EP0425736A1/fr
Application granted granted Critical
Publication of EP0425736B1 publication Critical patent/EP0425736B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T2/00—Spark gaps comprising auxiliary triggering means
    • H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap

Definitions

  • the invention is in the field of electrical components and is to be used in the structural design of a triggerable switching spark gap, in which a galvanically triggerable electrode is arranged centrally within an electrode of the main discharge gap.
  • Such components are used, among other things. used as a controllable high voltage switch in ignitors.
  • the high-voltage switch transfers the energy stored in a capacitor quickly and with little loss to a load, for example to an ohmic resistor for converting electrical energy into thermal energy or to the primary winding of an ignition coil. This energy transfer must be low-loss and fast, i.e. in particular with high steepness of the current and voltage pulses.
  • a known triggerable switching spark gap essentially consists of a gas discharge space and a trigger electrode; the gas discharge space is delimited by a cylindrical insulator, for example a ceramic or glass tube, and by a first and a second main electrode, which are arranged at the ends of the insulator and are connected to the latter in a vacuum-tight manner.
  • the main electrodes each have a flat discharge surface, the two discharge surfaces are axially opposed.
  • a cylindrical trigger electrode is arranged inside the first main electrode and insulated from it; it is located in the center of a circular opening in the first main electrode.
  • the discharge surface of the trigger electrode is arranged flush with the discharge surface of the first main electrode, as is a cylindrical insulating body with which the trigger electrode is insulated from the first main electrode (brochure "EEV Spark Gaps For Voltage Surge Protection And High Energy Pulsed Switching" from EEV) .
  • a high-frequency high-voltage pulse is applied to the trigger electrode during the operation of such a known switching spark gap, the ignition of the discharge gap between the two main electrodes is initiated via a pre-discharge.
  • the period from the ignition of the pre-discharge to the actual switching process is defined as the delay time or ignition delay time. In the case of switching spark gaps that have been customary to date, this is approximately 0.7 to 2 »s with a voltage of 2 kV to be switched and with an intrinsic breakdown voltage of approximately 3 kV.
  • the on-time of the main discharge path is about 0.2 »s.
  • the invention has for its object to design the switching spark gap so that it has a delay time of less than 0.5 »s. This should apply in particular under the boundary conditions of a voltage to be switched of approximately 2 kV and an intrinsic breakdown voltage of approximately 5 kV.
  • the distance between the discharge surfaces of the two main electrodes is larger by a factor of 1.1 to 2.3 than the width of the annular gap between the trigger electrode and the first main electrode, that the peripheral edge of the trigger electrode one Has a radius of curvature of less than or equal to 0.1 mm and that the trigger electrode and the first main electrode are coated with a silver-containing activation compound.
  • an ignition delay time of approximately 0.01 to 0.5 »s and a switching time of approximately 0.01» s are achieved.
  • a silver layer is used as the activation compound or a melted layer of a eutectic silver-aluminum compound with an aluminum content of about 10 to 40% by weight.
  • the main discharge gap of the new switching spark gap is formed by the first, disc-shaped main electrode 3 and the second, cup-shaped main electrode 2, which are each inserted in a vacuum-tight manner into one end of the tubular ceramic insulator 1. These three components form a discharge space 4 which is provided with a gas filling, in particular with a pure nitrogen filling.
  • the disk-shaped main electrode 3 is provided with an annular opening 5, in the center of which the trigger electrode 6 is arranged.
  • This consists of a cylindrical base part 7 and the actual rod-shaped electrode part 8 and is connected to the main electrode 3 in a vacuum-tight manner with the interposition of a tubular ceramic insulator 9.
  • the circumferential edge of the rod-shaped electrode part 8 is sharp, i.e. the radius of curvature is less than / equal to 0.1 mm. It is essential that the end face of the control electrode 8 is flush with the discharge surface of the main electrode 3.
  • the annular gap 10 resulting between the control electrode 8 and the annular opening 5 forms the pre-discharge path.
  • the axial distance between the discharge surfaces of the two main electrodes 2 and 3 is denoted by a, the width of the annular gap between the trigger electrode 6 and the annular opening 5 of the main electrode 3 by b.
  • the distance a in the present case is 1.1 mm ⁇ 0.15 mm, the gap width b 0.7 mm ⁇ 0.15 mm.
  • the trigger electrode 6 and the disk-shaped main electrode 3 are coated with an activation compound 11, which in the present case is silver, at least in the area that is essential for the gas discharge.
  • the coating expediently covers the entire surface of the two electrodes.
  • the switching spark gap shown has a minimum operating voltage of 1.3 kV and an intrinsic breakdown voltage of approximately 5 kV; With an operating voltage of 2 kV and trigger pulse amplitudes of 2 to 4 kV, ignition delay times of 0.01 to 0.5 »s and switching times of about 10 ns were determined.

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  • Spark Plugs (AREA)

Claims (5)

  1. Éclateur de commutation déclenchable,
    constitué d'un espace de décharge dans un gaz, qui est délimité par un isolateur et par une première électrode principale ainsi que par une seconde électrode principale ayant chacune une surface de décharge plane, et
    d'une électrode cylindrique de déclenchement, disposée à l'intérieur de la première électrode principale,
    la première électrode principale comportant une ouverture circulaire, au centre de laquelle l'électrode de déclenchement est disposée de niveau avec la surface de décharge de la première électrode principale,
    caractérisé par le fait
    que la distance des surfaces de décharge des deux électrodes principales (2,3) est supérieure, du facteur 1,1 à 2,3, à la largeur de l'intervalle annulaire (10) entre l'électrode de déclenchement (6) et la première électrode principale (3),
    que le bord circonférentiel de l'électrode de déclenchement (6) a un rayon de courbure inférieur/égal à 0,1 mm, et
    que l'électrode de déclenchement (6) et la première électrode principale (3) sont revêtues d'une composition d'activation (11) contenant de l'argent.
  2. Éclateur de commutation déclenchable suivant la revendication 1,
    caractérisé par le fait que le facteur de distance est compris entre 1,25 et 2,0 et notamment entre 1,4 et 2,7.
  3. Éclateur de commutation suivant la revendication 1 ou 2,
    caractérisé par le fait que la distance (a) entre les deux électrodes principales (2,3) est égale à 1,1 mm ± 0,15 mm et que l'intervalle annulaire (10) entre l'électrode de déclenchement (6) et la première électrode principale (3) a une largeur (b) égale à 0,7 mm ± 0,15 mm.
  4. Éclateur de commutation déclenchable suivant l'une des revendications 1 à 3, caractérisé par le fait que la composition d'activation (11) est constituée d'une couche d'argent ou d'une couche fondue en en composé eutectique argent/aluminium ayant une proportion d'aluminium comprise entre environ 10 et 40 % en poids.
  5. Eclateur de commutation déclenchable suivant l'une des revendications 1 à 4, caractérisé par le fait que l'espace de décharge (4) est empli d'une atmosphère d'azote pur.
EP89250072A 1989-11-02 1989-11-02 Eclateur de commutation déclenchable Expired - Lifetime EP0425736B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE58909356T DE58909356D1 (de) 1989-11-02 1989-11-02 Triggerbare Schaltfunkenstrecke.
EP89250072A EP0425736B1 (fr) 1989-11-02 1989-11-02 Eclateur de commutation déclenchable
ES89250072T ES2076204T3 (es) 1989-11-02 1989-11-02 Distancia de la chispa de conexion activable.
JP2295176A JP2873077B2 (ja) 1989-11-02 1990-10-30 トリガー可能なスパークギヤツプ機構
US07/606,150 US5151630A (en) 1989-11-02 1990-10-31 Triggerable switching spark gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89250072A EP0425736B1 (fr) 1989-11-02 1989-11-02 Eclateur de commutation déclenchable

Publications (2)

Publication Number Publication Date
EP0425736A1 EP0425736A1 (fr) 1991-05-08
EP0425736B1 true EP0425736B1 (fr) 1995-07-19

Family

ID=8202548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250072A Expired - Lifetime EP0425736B1 (fr) 1989-11-02 1989-11-02 Eclateur de commutation déclenchable

Country Status (5)

Country Link
US (1) US5151630A (fr)
EP (1) EP0425736B1 (fr)
JP (1) JP2873077B2 (fr)
DE (1) DE58909356D1 (fr)
ES (1) ES2076204T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5633629A (en) * 1995-02-08 1997-05-27 Hochstein; Peter A. Traffic information system using light emitting diodes
DE10018012B4 (de) * 2000-02-22 2005-02-24 Dehn + Söhne Gmbh + Co. Kg Druckfest gekapselte Funkenstreckenanordnung zum Ableiten von schädlichen Störgrößen durch Überspannungen
DE10066231B4 (de) * 2000-02-22 2006-10-12 Dehn + Söhne Gmbh + Co. Kg Druckfest gekapselte Funkenstreckenanordnung zum Ableiten von schädlichen Störgrößen durch Überspannungen
DE102005016848A1 (de) * 2005-04-12 2006-10-19 Epcos Ag Überspannungsableiter
CN101297452A (zh) 2005-09-14 2008-10-29 力特保险丝有限公司 充气式电涌放电器、激活化合物、点火条及相应方法
US10012063B2 (en) 2013-03-15 2018-07-03 Chevron U.S.A. Inc. Ring electrode device and method for generating high-pressure pulses
DE102017126371A1 (de) 2017-11-10 2019-05-16 Tdk Electronics Ag Triggerbare Funkenstrecke, Schaltkreis mit triggerbarer Funkenstrecke und Verfahren zur Herstellung einer triggerbaren Funkenstrecke

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230410A (en) * 1960-12-29 1966-01-18 Gen Electric Arc discharge device with triggering electrode
US3328632A (en) * 1965-08-16 1967-06-27 English Electric Co Ltd Vacuum-protective spark gap with trigger electrode
US3715614A (en) * 1971-09-28 1973-02-06 Bendix Corp Three electrode spark gap apparatus
US3725729A (en) * 1971-10-29 1973-04-03 Us Army Electrical crowbar system with novel triggered spark gap devices
SU738022A1 (ru) * 1978-02-15 1980-05-30 Предприятие П/Я В-8769 Управл емый газонаполненный разр дник
US4604554A (en) * 1984-06-05 1986-08-05 The United States Of America As Represented By The Secretary Of The Air Force Triggered spark gap discharger
FR2589015B1 (fr) * 1985-10-23 1994-06-17 Protel Parafoudre pour l'ecoulement de courants forts en reponse a des signaux rapides
US4939418A (en) * 1986-03-12 1990-07-03 The United States Of America As Represented By The Secretary Of The Air Force. Gas mixture for triggerable spark gaps
EP0242688B1 (fr) * 1986-04-22 1990-07-18 Siemens Aktiengesellschaft Dérivateur de surtension
DE3760233D1 (en) * 1986-04-22 1989-07-13 Siemens Ag Gas-discharge surge arrester

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Prospekt "EEV Spark Gaps For Voltage Surge Protection And High Energy Pulsed Switching" der Fa. EEV *

Also Published As

Publication number Publication date
DE58909356D1 (de) 1995-08-24
JPH03156874A (ja) 1991-07-04
EP0425736A1 (fr) 1991-05-08
JP2873077B2 (ja) 1999-03-24
ES2076204T3 (es) 1995-11-01
US5151630A (en) 1992-09-29

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