EP1066668B1 - Gas-filled discharge gap - Google Patents

Gas-filled discharge gap Download PDF

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Publication number
EP1066668B1
EP1066668B1 EP99922055A EP99922055A EP1066668B1 EP 1066668 B1 EP1066668 B1 EP 1066668B1 EP 99922055 A EP99922055 A EP 99922055A EP 99922055 A EP99922055 A EP 99922055A EP 1066668 B1 EP1066668 B1 EP 1066668B1
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EP
European Patent Office
Prior art keywords
gas
sio
electrode
silicate
weight
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
EP99922055A
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German (de)
French (fr)
Other versions
EP1066668A1 (en
Inventor
Wolfgang DÄUMER
Xiangyang Zou
Jifeng Qin
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.)
Epcos Xiaogan Co Ltd
TDK Electronics AG
Original Assignee
Siemens Vacuum Electronic Components Co Ltd
Epcos 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.)
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Publication date
Application filed by Siemens Vacuum Electronic Components Co Ltd, Epcos AG filed Critical Siemens Vacuum Electronic Components Co Ltd
Publication of EP1066668A1 publication Critical patent/EP1066668A1/en
Application granted granted Critical
Publication of EP1066668B1 publication Critical patent/EP1066668B1/en
Anticipated expiration legal-status Critical
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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
    • H01T1/00—Details of spark gaps
    • H01T1/20—Means for starting arc or facilitating ignition of spark gap
    • H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes

Definitions

  • the invention is in the field of electronic Components and is in the design of gas-filled Use discharge paths with at least two electrodes, on those to ensure the ignition properties at least one of the electrodes one of several components existing glass-like electrode activation mass applied is.
  • a glass-like electrode activation compound is used to set the DC response voltage U ag , which contains sodium silicate (Na 2 SiO 3 ), casium silicate (Cs 2 SiO 3 ) and metallic titanium (Ti) as base components and smaller amounts of sodium tetraborate (Na 2 B 4 O) as additives 7 ) and gastric oxide (MgO) contains.
  • the basic component sodium silicate is provided in about four to six times the amount of the other basic components cesium silicate and titanium. It has been shown that an activation composition composed in this way does not meet the increased requirements for the constancy of the DC response voltage after surge and AC loads.
  • Activation mass known that a barium compound and a Transition metal in metallic form as well as Contains basic component sodium silicate or potassium silicate.
  • the activation mass also contains another component an oxide compound of cesium and a so-called Transition metal, such as tungsten, chromium, niobium, or vanadium Molybdenum in an amount of 5 to 25% by weight.
  • the invention is based on the task of modifying the activation compound in such a way that the increase in the DC response voltage U ag after a surge current load and the drop in the DC response voltage U ag after AC load is reduced.
  • an electrode activation composition has proven to be suitable in which the base components are contained in an amount of approximately 1 to 3 parts by weight and the additives in an amount of approximately 0.1 to 0.5 parts by weight.

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  • Compositions Of Oxide Ceramics (AREA)

Description

Die Erfindung liegt auf dem Gebiet der elektronischen Bauelemente und ist bei der Gestaltung von gasgefüllten Entladungsstrecken mit wenigstens zwei Elektroden anzuwenden, bei denen zur Sicherstellung der Zündeigenschaften auf wenigstens eine der Elektroden eine aus mehreren Komponenten bestehende glasartige Elektrodenaktivierungsmasse aufgebracht ist.The invention is in the field of electronic Components and is in the design of gas-filled Use discharge paths with at least two electrodes, on those to ensure the ignition properties at least one of the electrodes one of several components existing glass-like electrode activation mass applied is.

Um bei mit Edelgas gefüllten Entladungsstrecken wie Überspannungsableitern oder Funkenstrecken das jeweils gewünschte Betriebsverhalten wie Zündspannung - insbesondere Ansprechgleichspannung -, Ansprechzeit, statische Ansprechspannung und dynamische Ansprechspannung, Löschspannung und Glimmbrennspannung zu gewährleitsten, müssen unterschiedliche Maßnahmen wie konstruktive Gestaltung der Elektroden, Art und Druck der Gasfüllung und Auswahl der auf den aktiven Oberflächen der Elektroden angeordneten Aktivierungsmasse aufeinander abgestimmt werden.In order to discharge lines filled with noble gas such as Surge arresters or spark gaps each desired operating behavior such as ignition voltage - in particular DC response voltage -, response time, static Response voltage and dynamic response voltage, To ensure extinguishing voltage and glow burning voltage, need different measures like constructive design the electrodes, type and pressure of the gas filling and selection of the arranged on the active surfaces of the electrodes Activation mass can be coordinated.

Zur Einstellung der Ansprechgleichspannung Uag ist dabei eine glasartige Elektrodenaktivierungsmasse gebräuchlich, die als Basiskomponenten Natriumsilikat (Na2SiO3), Casiumsilikat (Cs2SiO3) und metallisches Titan (Ti) und als Additive kleinere Anteile von Natriumtetraborat (Na2B4O7) und Magenesiumoxid (MgO) enthält. Bei dieser bekannten Aktivierungsmasse ist die Basiskomponente Natriumsilikat etwa in der vier- bis sechsfachen Menge der anderen Basiskomponenten Cäsiumsilikat und Titan vorgesehen. Es hat sich gezeigt, daß eine derart zusammengesetzte Aktivierungsmasse nicht den gestiegenen Anforderungen an die Konstanz der Ansprechgleichspannung nach Stoßstrom- und Wechselstrombelastungen entspricht. A glass-like electrode activation compound is used to set the DC response voltage U ag , which contains sodium silicate (Na 2 SiO 3 ), casium silicate (Cs 2 SiO 3 ) and metallic titanium (Ti) as base components and smaller amounts of sodium tetraborate (Na 2 B 4 O) as additives 7 ) and gastric oxide (MgO) contains. In this known activation mass, the basic component sodium silicate is provided in about four to six times the amount of the other basic components cesium silicate and titanium. It has been shown that an activation composition composed in this way does not meet the increased requirements for the constancy of the DC response voltage after surge and AC loads.

Desweiteren ist aus der Druckschrift DE 197 01 816 A1 eine Aktivierungsmasse bekannt, die eine Bariumverbindung und ein Übergangsmetall in metallischer Form sowie als Basiskomponente Natriumsilikat oder Kaliumsilikat entält. Zudem enthält die Aktivierungsmasse als weitere Komponente eine Oxidverbindung aus Cäsium und einem sogenannten Übergangsmetall, wie Wolfram, Chrom, Niob, Vanadium oder Molybdän in einer Menge von 5 bis 25 Gew.-%. Furthermore, from DE 197 01 816 A1 Activation mass known that a barium compound and a Transition metal in metallic form as well as Contains basic component sodium silicate or potassium silicate. The activation mass also contains another component an oxide compound of cesium and a so-called Transition metal, such as tungsten, chromium, niobium, or vanadium Molybdenum in an amount of 5 to 25% by weight.

Ausgehend von einer gasgefüllten Entladungsstrecke wie einem Überspannungsableiter oder einer Funkenstrecke mit einer die genannten Basiskomponenten und Additive aufweisenden Elektrodenaktivierungsmasse liegt der Erfindung die Aufgabe zugrunde, die Aktivierungsmasse so zu modifizieren, daß der Anstieg der Ansprechgleichspannung Uag nach Stoßstrombelastung reduziert und der Abfall der Ansprechgleichspannung Uag nach Wechselstrombelastung verringert wird.Starting from a gas-filled discharge path such as a surge arrester or a spark gap with an electrode activation compound having the above-mentioned basic components and additives, the invention is based on the task of modifying the activation compound in such a way that the increase in the DC response voltage U ag after a surge current load and the drop in the DC response voltage U ag after AC load is reduced.

Zur Lösung dieser Aufgabe ist gemäß der Erfindung vorgesehen, daß der Elektrodenaktivierungsmasse bei reduziertem Anteil von Natriumsilikat als weitere Basiskomponenten Kaliumsilikat (K2SiO3) und Cäsiumwolframat (Cs2WO4) zugefügt sind. Insbesondere hat sich eine Elektrodenaktivierungsmasse als geeignet erwiesen, bei der die Basiskomponenten in einer Menge von jeweils etwa 1 bis 3 Gew.Teilen und die Additive in einer Menge von jeweils etwa 0,1 bis 0,5 Gew.Teilen enthalten sind.To achieve this object, according to the invention it is provided that, with a reduced proportion of sodium silicate, potassium silicate (K 2 SiO 3 ) and cesium tungstate (Cs 2 WO 4 ) are added to the electrode activation composition. In particular, an electrode activation composition has proven to be suitable in which the base components are contained in an amount of approximately 1 to 3 parts by weight and the additives in an amount of approximately 0.1 to 0.5 parts by weight.

Bei Anwendung einer derart zusammengestellten Aktivierungsmasse hat sich gezeigt, daß für den Anstieg der Ansprechgleichspannung nach einer Stoßstrombelastung von 10 x 5 kA, 8/20 µs keine Meßwerte höher als die um 20 % erhöhte Nennspannung liegen. Der Abfall der Ansprechgleichspannung nach einer Wechselstrom-Belastung 10 x 5A/1s liegt für die elektrischen Meßwerte immer oberhalb der um 20 % verminderten Nennspannung. Darüber hinaus hat sich gezeigt, daß nach elektrischer Belastung die dynamische Ansprechspannung nur unwesentlich erhöht ist, und daß die Erstmessungsausbeute eines unter den gleichen Randbedingungen gefertigten, formierten und gemessenen Kollektivs höher liegt als bisher, und zwar sowohl hinsichtlich der Einhaltung von Meßgrenzen der Zündund Ansprechwerte als auch hinsichtlich des Auftretens von Isolationsfehlern. When using an activation compound composed in this way has been shown that for the rise in the DC response voltage after a surge current load of 10 x 5 kA, 8/20 µs no measured values higher than the 20% higher nominal voltage lie. The drop in the DC response voltage after an AC load of 10 x 5A / 1s is for the electrical Measured values always reduced by 20% Nominal voltage. In addition, it has been shown that after electrical The dynamic response voltage is only insignificant is increased, and that the initial measurement yield of a manufactured under the same boundary conditions and measured collective is higher than before, namely both with regard to the observance of measuring limits of the ignition and Response values as well as regarding the occurrence of Insulation faults.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Figur erläutert.An embodiment of the invention is described below the figure explained.

Die Figur zeigt einen Überspannungsableiter, der aus einem Keramikisolator 1 und zwei stirnseitig eingesetzten Elektroden 2 und 3 besteht. Auf die mit Vertiefungen versehene Oberfläche der Elektroden ist eine Aktivierungsmasse 4 aufgebracht, die als Basiskomponenten Natriumsilikat, Cäsiumsilikat, Kaliumsilikat, Cäsiumwolframat und metallisches Titan enthält. Als Additive sind weiterhin Natriumtetraborat und Magnesiumoxid vorgesehen. Die einzelnen Komponenten liegen in folgenden Anteilen vor:

  • Natriumsilikat etwa 2 bis 3 Gew.Teile,
  • Kaliumsilikat etwa 2 bis 3 Gew.Teile,
  • Cäsiumsilikat etwa 1 bis 2 Gew.Teile,
  • Cäsiumwolframat etwa 1 bis 2 Gew.Teile,
  • metallisches Titan etwa 1,5 bis 2,5 Gew.Teile,
  • Natriumtetraborat etwa 0,3 bis 0,5 Gew.Teile,
  • Magnesiumoxid etwa 0,15 bis 0,25 Gew.Teile.
    • The figure shows a surge arrester which consists of a ceramic insulator 1 and two electrodes 2 and 3 inserted at the end. An activation mass 4 is applied to the recessed surface of the electrodes, which contains sodium silicate, cesium silicate, potassium silicate, cesium tungstate and metallic titanium as basic components. Sodium tetraborate and magnesium oxide are also provided as additives. The individual components are in the following proportions:
  • Sodium silicate about 2 to 3 parts by weight,
  • Potassium silicate about 2 to 3 parts by weight,
  • Cesium silicate about 1 to 2 parts by weight,
  • Cesium tungstate about 1 to 2 parts by weight,
  • metallic titanium about 1.5 to 2.5 parts by weight,
  • Sodium tetraborate about 0.3 to 0.5 parts by weight,
  • Magnesium oxide about 0.15 to 0.25 parts by weight.

    • Claims (2)

    1. Gas-filled discharge gap such as spark gap or surge arrester with at least two electrodes (2, 3) and with an electrode-activation compound which comprises several components and has been applied to at least one of the electrodes,
      in which the electrode-activation compound (4) contains sodium silicate (Na2SiO3), caesium silicate (Cs2SiO3) and metallic titanium (Ti) as basic components and smaller proportions of sodium tetraborate (Na2B4O7) and magnesium oxide (MgO) as additives and in which, with a reduced proportion of sodium silicate (Na2SiO3), potassium silicate (K2SiO3) and caesium tungstate (Cs2WO4) are added to the electrode-activation compound as further basic components.
    2. Gas-filled discharge gap according to Claim 1, characterized in that, in the electrode-activation compound (4), the basic components are contained in a quantity of in each case about 1 to 3 parts by weight and the additives are contained in a quantity of in each case about 0.1 to 0.5 parts by weight.
    EP99922055A 1998-03-26 1999-03-12 Gas-filled discharge gap Expired - Lifetime EP1066668B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19814631 1998-03-26
    DE19814631A DE19814631A1 (en) 1998-03-26 1998-03-26 Gas-filled discharge line
    PCT/DE1999/000814 WO1999049545A1 (en) 1998-03-26 1999-03-12 Gas-filled discharge gap

    Publications (2)

    Publication Number Publication Date
    EP1066668A1 EP1066668A1 (en) 2001-01-10
    EP1066668B1 true EP1066668B1 (en) 2003-02-12

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    ID=7863263

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99922055A Expired - Lifetime EP1066668B1 (en) 1998-03-26 1999-03-12 Gas-filled discharge gap

    Country Status (7)

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    US (1) US6326724B1 (en)
    EP (1) EP1066668B1 (en)
    JP (1) JP4112176B2 (en)
    KR (1) KR100540270B1 (en)
    CN (1) CN1227790C (en)
    DE (2) DE19814631A1 (en)
    WO (1) WO1999049545A1 (en)

    Families Citing this family (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10159260A1 (en) * 2001-12-03 2003-06-18 Epcos Ag Electrode and electrical component with the electrode
    DE102005013499A1 (en) 2005-03-23 2006-10-05 Epcos Ag Gas filled discharge line
    JP4651434B2 (en) * 2005-03-31 2011-03-16 岡谷電機産業株式会社 Discharge tube
    DE102005036265A1 (en) * 2005-08-02 2007-02-08 Epcos Ag radio link
    ATE550816T1 (en) * 2007-06-21 2012-04-15 Epcos Ag DEVICE AND MODULE FOR PROTECTION AGAINST LIGHTNING AND SURGE VOLTAGE
    DE102008044845B4 (en) 2008-08-28 2015-04-09 Epcos Ag Bias network
    KR200476319Y1 (en) * 2013-06-10 2015-02-24 조윤경 Holder for pet bottle
    JP6160835B2 (en) * 2014-03-31 2017-07-12 三菱マテリアル株式会社 Discharge tube and manufacturing method thereof
    JP6375576B2 (en) * 2015-03-12 2018-08-22 三菱マテリアル株式会社 Discharge tube and manufacturing method thereof

    Family Cites Families (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CH691245A5 (en) * 1996-01-12 2001-05-31 Epcos Ag Gas-filled discharge path.

    Also Published As

    Publication number Publication date
    DE59904276D1 (en) 2003-03-20
    KR100540270B1 (en) 2006-01-16
    DE19814631A1 (en) 1999-09-30
    JP4112176B2 (en) 2008-07-02
    US6326724B1 (en) 2001-12-04
    EP1066668A1 (en) 2001-01-10
    CN1227790C (en) 2005-11-16
    WO1999049545A1 (en) 1999-09-30
    KR20010042187A (en) 2001-05-25
    CN1298563A (en) 2001-06-06
    JP2002508580A (en) 2002-03-19

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