EP1861906A1 - Gas-filled discharge path - Google Patents
Gas-filled discharge pathInfo
- Publication number
- EP1861906A1 EP1861906A1 EP06706016A EP06706016A EP1861906A1 EP 1861906 A1 EP1861906 A1 EP 1861906A1 EP 06706016 A EP06706016 A EP 06706016A EP 06706016 A EP06706016 A EP 06706016A EP 1861906 A1 EP1861906 A1 EP 1861906A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge path
- gas
- electrodes
- filled discharge
- activation mass
- 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
Links
- 230000004913 activation Effects 0.000 claims abstract description 20
- 229910020494 K2WO4 Inorganic materials 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- AAQNGTNRWPXMPB-UHFFFAOYSA-N dipotassium;dioxido(dioxo)tungsten Chemical compound [K+].[K+].[O-][W]([O-])(=O)=O AAQNGTNRWPXMPB-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- 235000012773 waffles Nutrition 0.000 description 1
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
- H01T1/24—Selection of materials for electrodes
-
- 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
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
Definitions
- the invention relates to a gas-filled discharge path such as spark gap or surge arrester.
- a gas-filled discharge path is known from the document DE 19814631 A1.
- a glassy electrode activating composition is used which contains several components, inter alia as a basic component cesium tungstate (Cs 2 WO 4 ).
- the invention has for its object to provide a gas-filled discharge gap with good extinguishing properties.
- a gas-filled discharge gap with at least two electrodes is specified, in which an electrode activation mass containing K 2 WO 4 is applied to at least one of the electrodes to ensure the ignition properties.
- Potassium tungstate has the properties of a getter. This material is chemically very stable and can exert a getter effect even after a surge current load. As an additional property, free potassium and / or potassium oxide is formed by reduction of K 2 WO 4 in the gas-filled cavity, resulting in a low work function of the activating composition.
- Potassium tungstate melts at a brazing temperature of about 820 °, in particular loose activation particles are bound, so that the escape of loose activation particles can be prevented from the activation mass.
- the envisaged in the invention use of a potassium WoIframat or one of the other potassium compounds containing activation mass ensures very good extinguishing properties of the discharge path after electrical stress.
- An arrester with a K 2 WO 4 containing activation mass extinguished automatically and reliably after a discharge despite the applied DC voltage.
- a discharge path designed as a spark gap, with a, for example, ceramic, preferably cylindrical, hollow body with a jacket surface is specified. Open end faces of the hollow body are closed by end electrodes. Thus, a closed cavity is formed, which is filled with a noble gas.
- the activation mass is arranged on the mutually facing active surfaces of the electrodes.
- the active surfaces can have at least one depression or several depressions in the form of a waffle for receiving the activation mass. Waffling is understood as meaning intersecting depressions.
- On the active surface of an electrode may alternatively be provided a plurality of recesses which do not intersect.
- a discharge path designed as a two-path arrester is provided with two end electrodes, preferably arranged on the end side, and a hollow-cylindrical center electrode. Between the center electrode and one of the end electrodes, a hollow-cylindrical ceramic insulator is preferably arranged in each case.
- The. Activation mass is for application to both the center electrode and the end electrodes of the arrester suitable.
- the center electrode may be provided with a circumferential groove for receiving the activation mass.
- the activation mass can be incorporated in end electrodes in both embodiments on the mutually facing active electrode surfaces in the recesses provided for this purpose.
- the activation mass may consist of a base component, for. B. K 2 WO 4 exist.
- the activation mass may contain a plurality of components, in particular base components.
- K 2 WO 4 is in an advantageous variant as a base component of the activation mass z. B. in an amount of about 20 to 90 wt.%, Preferably in an amount of 30 to 60 wt.% Provided.
- the activation composition may in one variant have at least one base component and, in addition, additives.
- One of the basic components is K 2 WO 4 .
- metal oxides eg. For example, TiO 2 ;
- the electrode material may also contain a proportion of glass or silicates, for.
- 1 BaTiO 3 , TiO 2 , LiNbO 3 , Na 2 B 4 O 7 , MgO are considered. Na 2 B 4 O 7 , MgO are particularly suitable as additives.
- the base components may be contained in an amount of about 10 to 90 wt.% Each, and the additives may be contained in an amount of about less than 10 wt.%, Respectively.
- K 2 WO 4 can in a further variant as an additive z. B. in an amount of 1 to 20 wt.%, Preferably in an amount of 5 to 10 wt.% Be provided.
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Glass Compositions (AREA)
- Catalysts (AREA)
- Spark Plugs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005013499A DE102005013499A1 (en) | 2005-03-23 | 2005-03-23 | Gas filled discharge line |
PCT/DE2006/000347 WO2006099833A1 (en) | 2005-03-23 | 2006-02-24 | Gas-filled discharge path |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1861906A1 true EP1861906A1 (en) | 2007-12-05 |
EP1861906B1 EP1861906B1 (en) | 2011-07-13 |
Family
ID=36219680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06706016A Active EP1861906B1 (en) | 2005-03-23 | 2006-02-24 | Gas-filled discharge path |
Country Status (6)
Country | Link |
---|---|
US (1) | US7795810B2 (en) |
EP (1) | EP1861906B1 (en) |
JP (1) | JP4801139B2 (en) |
CN (1) | CN101147304B (en) |
DE (1) | DE102005013499A1 (en) |
WO (1) | WO2006099833A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005016848A1 (en) * | 2005-04-12 | 2006-10-19 | Epcos Ag | Surge arresters |
JP5167967B2 (en) * | 2008-06-12 | 2013-03-21 | パナソニック株式会社 | Manufacturing method of anti-static parts |
SI23691A (en) | 2011-03-21 | 2012-09-28 | ISKRA ZAĹ ÄŚITE d.o.o. | Gas discharge tube with metal body for high current surges |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3430485A1 (en) * | 1984-08-18 | 1986-02-27 | Basf Ag, 6700 Ludwigshafen | FUEL CELL |
DE4318994C2 (en) * | 1993-05-26 | 1995-04-20 | Siemens Ag | Gas-filled surge arrester |
CH691245A5 (en) * | 1996-01-12 | 2001-05-31 | Epcos Ag | Gas-filled discharge path. |
DE19632417C1 (en) * | 1996-08-05 | 1998-05-07 | Siemens Ag | Hydrogen-containing gas-filled surge diverter |
DE19741658A1 (en) * | 1997-09-16 | 1999-03-18 | Siemens Ag | Gas-filled discharge gap e.g. spark gap or surge diverter |
DE19814631A1 (en) * | 1998-03-26 | 1999-09-30 | Siemens Ag | Gas-filled discharge line |
JP3718142B2 (en) * | 2001-06-22 | 2005-11-16 | 岡谷電機産業株式会社 | Discharge tube |
KR100735859B1 (en) * | 2003-04-10 | 2007-07-04 | 오카야 덴기 산교 가부시키가이샤 | Discharge tube |
JP4247556B2 (en) * | 2003-08-08 | 2009-04-02 | 岡谷電機産業株式会社 | Discharge type surge absorber |
-
2005
- 2005-03-23 DE DE102005013499A patent/DE102005013499A1/en not_active Ceased
-
2006
- 2006-02-24 EP EP06706016A patent/EP1861906B1/en active Active
- 2006-02-24 JP JP2008502237A patent/JP4801139B2/en not_active Expired - Fee Related
- 2006-02-24 CN CN2006800092492A patent/CN101147304B/en active Active
- 2006-02-24 WO PCT/DE2006/000347 patent/WO2006099833A1/en not_active Application Discontinuation
-
2007
- 2007-09-21 US US11/859,586 patent/US7795810B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006099833A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7795810B2 (en) | 2010-09-14 |
CN101147304B (en) | 2011-12-21 |
JP2008535150A (en) | 2008-08-28 |
DE102005013499A1 (en) | 2006-10-05 |
CN101147304A (en) | 2008-03-19 |
US20080048545A1 (en) | 2008-02-28 |
EP1861906B1 (en) | 2011-07-13 |
WO2006099833A1 (en) | 2006-09-28 |
JP4801139B2 (en) | 2011-10-26 |
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