EP1066668A1 - Gas-filled discharge gap - Google Patents

Gas-filled discharge gap

Info

Publication number
EP1066668A1
EP1066668A1 EP99922055A EP99922055A EP1066668A1 EP 1066668 A1 EP1066668 A1 EP 1066668A1 EP 99922055 A EP99922055 A EP 99922055A EP 99922055 A EP99922055 A EP 99922055A EP 1066668 A1 EP1066668 A1 EP 1066668A1
Authority
EP
European Patent Office
Prior art keywords
silicate
gas
electrode activation
filled discharge
components
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.)
Granted
Application number
EP99922055A
Other languages
German (de)
French (fr)
Other versions
EP1066668B1 (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.)
Filing date
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
Expired - Lifetime legal-status Critical Current

Links

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 can be used in the design of gas-filled discharge paths with at least two electrodes, in which a glass-like electrode activation compound consisting of several components is applied to at least one of the electrodes to ensure the ignition properties.
  • a glass-like electrode activation compound is customary for setting the direct response voltage U ag , the base components being sodium silicate (Na 2 S ⁇ 0 3 ), casium silicate (Cs 2 S ⁇ O and metallic titanium (Ti) and small additives of sodium tetraborate as additives (Na 2 B 4 0) and gastric silicon oxide (MgO) 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 casium silicate and titanium. It has been found that such a compound Activation mass does not meet the increased requirements for the constancy of the DC response voltage after surge and AC loads.
  • the invention is based on the task of modifying the activation compound in such a way that the increase in the direct current voltage U ag after surge current load and the Drop in the DC response voltage U ag after AC load is reduced.
  • potassium electrode K 2 S ⁇ 0 3
  • casium tungstate Cs 2 W0 4
  • 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.
  • 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 surface of the electrodes provided with depressions, which contains sodium silicate, casium silicate, potassium silicate, casium wolfra at and metallic titanium as basic components.
  • Magnesium oxide provided. The individual components are in the following proportions:
  • Casium 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.

Abstract

The purpose of the present invention is to prevent excessive variations, after application of a load, in the DC priming voltage Uag of gas-filled discharge gaps that include a vitreous-type electrode-activation mass comprising a plurality of components. To this end, the base components of the electrode-activation mass (4) include not only sodium silicate, cesium silicate and titanium, but also potassium silicate and cesium tungstate.

Description

1 Beschreibung 1 description
Gasgefullte EntladungsstreckeGas-filled discharge line
Die Erfindung liegt auf dem Gebiet der elektronischen Bauelemente und ist bei der Gestaltung von gasgefullten Entladungsstrecken mit wenigstens zwei Elektroden anzuwenden, bei denen zur Sicherstellung der Zundeigenschaften auf wenigstens eine der Elektroden eine aus mehreren Komponenten bestehende glas- artige Elektrodenaktivierungsmasse aufgebracht ist.The invention is in the field of electronic components and can be used in the design of gas-filled discharge paths with at least two electrodes, in which a glass-like electrode activation compound consisting of several components is applied to at least one of the electrodes to ensure the ignition properties.
Um bei mit Edelgas gefüllten Entladungsstrecken wie Uberspan- nungsableitern oder Funkenstrecken das jeweils gewünschte Betriebsverhalten wie Zündspannung - insbesondere Ansprech- gleichspannung -, Ansprechzeit, statische Ansprechspannung und dynamische Ansprechspannung, Loschspannung und Glimm- brennspannung zu gewährleisten, müssen unterschiedliche Maßnahmen wie konstruktive Gestaltung der Elektroden, Art und Druck der Gasfullung und Auswahl der auf den aktiven Oberfla- chen der Elektroden angeordneten Aktivierungsmasse aufeinander abgestimmt werden. Zur Einstellung der Ansprechgleich- spannung Uag ist dabei eine glasartige Elektrodenaktivierungsmasse gebräuchlich, die als Basiskomponenten Natπumsi- likat (Na2Sι03) , Casiumsilikat (Cs2SιO und metallisches Ti- tan (Ti) und als Additive kleinere Anteile von Natriumtetra- borat (Na2B40) und Magenesiumoxid (MgO) enthalt. Bei dieser bekannten Aktivierungsmasse ist die Basiskomponente Natrium- silikat etwa in der vier- bis sechsfachen Menge der anderen Basisko ponenten Casiumsilikat 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. 2 Ausgehend von einer gasgefullten Entladungsstrecke wie einem Uberspannungsaoleiter oder einer Funkenstrecke mit einer die genannten Basiskomponenten und Additive aufweisenden Elektro- denaktivierungsmasse liegt der Erfindung die Aufgabe zugrun- de, die Aktivierungsmasse so zu modifizieren, daß der Anstieg der Ansprechgleichspannung Uag nach Stoßstrombelastung reduziert und der Abfall der Ansprechgleichspannung Uag nach Wechselstrombelastung verringert wird.In order to ensure the desired operating behavior such as ignition voltage - in particular direct DC voltage -, response time, static response voltage and dynamic response voltage, quenching voltage and glow flame voltage in the case of discharge paths filled with noble gas such as surge arresters or spark gaps, different measures such as the design of the electrodes, The type and pressure of the gas filling and the selection of the activation mass arranged on the active surfaces of the electrodes are coordinated with one another. A glass-like electrode activation compound is customary for setting the direct response voltage U ag , the base components being sodium silicate (Na 2 Sι0 3 ), casium silicate (Cs 2 SιO and metallic titanium (Ti) and small additives of sodium tetraborate as additives (Na 2 B 4 0) and gastric silicon oxide (MgO) 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 casium silicate and titanium. It has been found that such a compound Activation mass does not meet the increased requirements for the constancy of the DC response voltage after surge and AC loads. 2 On the basis of a gas-filled discharge path such as an overvoltage conductor or a spark gap with an electrode activation compound having the basic components and additives mentioned, the invention is based on the task of modifying the activation compound in such a way that the increase in the direct current voltage U ag after surge current load and the Drop in the DC response voltage U ag after AC load is reduced.
Zur Losung dieser Aufgabe ist gemäß der Erfindung vorgesehen, daß der Elektrodenaktivierungsmasse bei reduziertem Anteil von Natπumsilikat als weitere Basiskomponenten Kaliumsilikat (K2Sι03) und Casiumwolframat (Cs2W04) zugefugt sind. Insbesondere hat sich eine Elektrodenaktivierungsmasse als geeignet erwiesen, bei der die Basiskomponenten m 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 solve this problem it is provided according to the invention that potassium electrode (K 2 Sι0 3 ) and casium tungstate (Cs 2 W0 4 ) are added to the electrode activation composition with a reduced proportion of sodium silicate as further basic components. 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 Aktivierungs- masse hat sich gezeigt, daß für den Anstieg der Ansprechgleichspannung nach einer Stoßstrombelastung von 10 x 5 kA, 8/20 μs keine Meßwerte hoher als die um 20 % erhöhte Nennspannung liegen. Der Abfall der Ansprechgleichspannung nach einer Wechselstrom-Belastung 10 x 5A/ls liegt f r die elek- trischen Meßwerte immer oberhalb der um 20 % vermindertenWhen using an activation compound composed in this way, it 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 are higher than the 20% increased nominal voltage. The drop in the DC response voltage after an AC load of 10 x 5A / ls is always above the 20% reduction for the electrical measured values
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 hoher liegt als bisher, und zwar sowohl hinsichtlich der Einhaltung von Meßgrenzen der Zund- und Ansprechwerte als auch hinsichtlich des Auftretens von Isolationsfehlem. 3 Ein Ausfuhrungsbeispiel der Erfindung wird nachfolgend anhand der Figur erläutert.Nominal voltage. In addition, it has been shown that the dynamic response voltage is only insignificantly increased after electrical loading, and that the initial measurement yield of a collective manufactured, formed and measured under the same boundary conditions is higher than before, both with regard to compliance with the measurement limits of the ignition and Response values as well as with regard to the occurrence of insulation faults. 3 An exemplary embodiment of the invention is explained below with reference to the figure.
Die Figur zeigt einen Überspannungsableiter, der aus einem Keramikisolator 1 und zwei stirnseitig eingesetzten Elektroden 2 und 3 besteht. Auf die mit Vertiefungen versehene Oberflache der Elektroden ist eine Aktivierungsmasse 4 aufgebracht, die als Basiskomponenten Natriu silikat, Casiumsilikat, Kaliumsllikat, Casiumwolfra at und metallisches Titan enthalt. Als Additive sind weiterhin Natriumtetraborat undThe 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 surface of the electrodes provided with depressions, which contains sodium silicate, casium silicate, potassium silicate, casium wolfra at and metallic titanium as basic components. Sodium tetraborate and
Magnesiumoxid vorgesehen. Die einzelnen Komponenten liegen in folgenden Anteilen vor:Magnesium oxide provided. The individual components are in the following proportions:
Natriumsilikat etwa 2 bis 3 Gew. Teile, Kaliumsilikat etwa 2 bis 3 Gew. Teile, Casiumsilikat etwa 1 bis 2 Gew. Teile,Sodium silicate about 2 to 3 parts by weight, potassium silicate about 2 to 3 parts by weight, casium silicate about 1 to 2 parts by weight,
Casiumwolframat 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. Casium 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

4 Patentansprüche 4 claims
1. Gasgefüllte Entladungsstrecke wie Funkenstrecke oder Über- spannungsableiter mit wenigstens zwei Elektroden (2, 3) und mit einer aus mehreren Komponenten bestehenden Elektrodenaktivierungsmasse, die auf wenigstens eine der Elektroden aufgebracht ist, bei der die Elektrodenaktivierungsmasse (4) als Basiskomponenten Natriumsilsikat (Na2Si03) , Cäsiumsilikat (Cs2Si03) und metallisches Titan (Ti) und als Additive kleinere Anteile von Natriumtetraborat (Na2B4θ7) und Magnesiumoxid (MgO) enthält und bei der der Elektrodenaktivierungsmasse bei reduziertem Anteil von Natriumsilikat (Na2Si03) als weitere Basiskomponenten Kaliumsilikat (K2Si03) und Cäsiumwolframat (Cs2W04) zu- gefügt sind.1. Gas-filled discharge gap such as a spark gap or surge arrester with at least two electrodes (2, 3) and with an electrode activation compound consisting of several components, which is applied to at least one of the electrodes, in which the electrode activation compound (4) as the basic components sodium silicate (Na 2 Si0 3 ), cesium silicate (Cs 2 Si0 3 ) and metallic titanium (Ti) and as additives small amounts of sodium tetraborate (Na 2 B 4 θ7) and magnesium oxide (MgO) and in which the electrode activation compound with a reduced amount of sodium silicate (Na 2 Si0 3 ) as further basic components potassium silicate (K 2 Si0 3 ) and cesium tungstate (Cs 2 W0 4 ) are added.
2. Gasgefüllte Entladungsstrecke nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Basiskomponenten in einer Menge von jeweils etwa 1 bis 3 Gewichtsteilen und die Additive in einer Menge von jeweils etwa 0,1 bis 0,5 Gewichtsteilen in der Elektrodenaktivierungsmasse (4) enthalten sind. 2. Gas-filled discharge path according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the base components in an amount of about 1 to 3 parts by weight and the additives in an amount of about 0.1 to 0.5 parts by weight are contained in the electrode activation composition (4).
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
DE19814631A DE19814631A1 (en) 1998-03-26 1998-03-26 Gas-filled discharge line
DE19814631 1998-03-26
PCT/DE1999/000814 WO1999049545A1 (en) 1998-03-26 1999-03-12 Gas-filled discharge gap

Publications (2)

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

Family

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)

Country Link
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
DE102008029094A1 (en) * 2007-06-21 2009-01-02 Epcos Ag Device and module for protection against lightning and surges
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.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9949545A1 *

Also Published As

Publication number Publication date
DE19814631A1 (en) 1999-09-30
CN1298563A (en) 2001-06-06
JP4112176B2 (en) 2008-07-02
DE59904276D1 (en) 2003-03-20
KR100540270B1 (en) 2006-01-16
EP1066668B1 (en) 2003-02-12
US6326724B1 (en) 2001-12-04
WO1999049545A1 (en) 1999-09-30
CN1227790C (en) 2005-11-16
JP2002508580A (en) 2002-03-19
KR20010042187A (en) 2001-05-25

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