EP0062782B1 - Parafoudre de surtension à décharge de gaz - Google Patents

Parafoudre de surtension à décharge de gaz Download PDF

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Publication number
EP0062782B1
EP0062782B1 EP82102294A EP82102294A EP0062782B1 EP 0062782 B1 EP0062782 B1 EP 0062782B1 EP 82102294 A EP82102294 A EP 82102294A EP 82102294 A EP82102294 A EP 82102294A EP 0062782 B1 EP0062782 B1 EP 0062782B1
Authority
EP
European Patent Office
Prior art keywords
ignition
streak
arrester
gas
electrodes
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
Application number
EP82102294A
Other languages
German (de)
English (en)
Other versions
EP0062782A1 (fr
Inventor
Hartwig Dipl.-Phys. Munt
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 EP0062782A1 publication Critical patent/EP0062782A1/fr
Application granted granted Critical
Publication of EP0062782B1 publication Critical patent/EP0062782B1/fr
Expired 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
    • H01T1/00—Details of spark gaps
    • H01T1/20—Means for starting arc or facilitating ignition of spark gap

Definitions

  • the invention relates to a surge arrester with a gas-tight housing in which cone-shaped electrodes face each other forming a gap, which are inserted into the ends of a tubular insulating body, on the inside of which there is at least one line of electrically conductive material as an ignition line over part of the tube length in the direction extends from one to the other electrode and is connected to an electrode.
  • Such a surge arrester is known from DE-AS 23 46 174.
  • the response voltage should be unaffected by the distance from the ignition line to the counter electrode.
  • the priming line connected to the one electrode extends beyond the height of the gap and the distance between the priming line and the counter electrode is greater than the gap between the two electrodes.
  • arresters that do not contain radioactive substances have the following property: If the arresters are brought from the bright room into the dark, their ignition voltage is about 2% above that at room brightness. If the arresters are in the dark for several hours or days, their ignition voltage rises to twice the value, with the collective scattering between 2% and 100% drift.
  • radioactive preparations are suitable for the pre-ionization of the gas filling, the half-life of which is of the order of the component life.
  • tritium is also used as the gas and promethium 147 or radium 226 as the solid substance.
  • the serious disadvantage of using radioactive preparations is that because of their powdery or gaseous nature there is always the possibility of contamination of the environment. Radioactive substances therefore require extensive safety precautions from the manufacturer of arresters as well as from their customers. The disposal of defective arresters is also problematic.
  • the invention has for its object to provide a gas discharge surge arrester in which no radioactive substances are used and which has only the 2% drift of the ignition voltage in the dark, which is caused by the dependence of the triggering coefficient on the light.
  • a surge arrester of the type mentioned at the outset that the ignition line 3 is electrically conductively connected at both ends to the respective electrode 1, 2 and preferably has an interruption outside the gap space, the length (I) of which is less than that Gap length (c).
  • the electrodes are provided with an activating compound on their active surfaces, the triggering coefficient of which is greater than the triggering coefficient of the material of the primer, for which pencil graphite is particularly suitable.
  • tubular insulating body is made of glass, it is advantageous to roughen the insulating body at least on its inside by etching to apply the primer.
  • the distances between the ignition lines are first made too small and, after the arrester has been sealed gas-tight, they are burned to the desired size by applying a voltage and igniting the arrester. It is expedient to add 0.1% to 10% oxygen to the gas atmosphere of the arrester when the electrodes melt, so that the combustion of the graphite used as the material for the primer is accelerated.
  • a free electron is sufficient to ignite the arrester, and this does not necessarily have to come from a radioactive substance, but may have been generated as a result of the radiation or the activation mass or the field emission on the arrester electrodes or the field emission along the break in the ignition.
  • the surge arrester shown schematically in section in the figure consists of egg Nem gas-tight housing in which frusto-conical electrodes 1, 2 form a gap opposite each other, which are inserted into the ends of a tubular insulating body 4.
  • frusto-conical electrodes 1, 2 form a gap opposite each other, which are inserted into the ends of a tubular insulating body 4.
  • the ignition line 3 is connected to both electrodes 1, 2.
  • the ignition line 3 is interrupted outside the combustion chamber over the length 1, 1 being smaller than the electrode distance c.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Thermistors And Varistors (AREA)

Claims (6)

1. Parasurtension à décharge dans un gaz possédant une enveloppe étanche au gaz dans laquelle des électrodes tronconiques (1, 2) sont disposées l'une en face de l'autre en formant un intervalle et sont insérées dans les extrémités d'un corps isolant tubulaire (4), dont le côté intérieur porte au moins un trait (3) d'un matériau électriquement conducteur servant de trait d'amorçage et s'étendant sur une partie de la longueur du tube dans la direction allant de l'une à l'autre électrode, en étant relié à une électrode, caractérisé en ce que le trait d'amorçage est relié électriquement aux deux extrémités à l'électrode correspondante (1, 2), et présente une interruption située de préférence en dehors de l'espace où se trouve l'intervalle, et dont la longueur (1) est inférieure à la longueur (c) de l'intervalle.
2. Parasurtension selon la revendication 1, caractérisé en ce que les surfaces actives des électrodes (1, 2) sont pourvues d'une masse d'activation dont le coefficient de déclenchement est plus grand que le coefficient de déclenchement du trait d'amorçage (3).
3. Parasurtension selon la revendication 1 ou 2, caractérisé en ce que le trait d'amorçage (3) est en plombagine.
4. Parasurtension selon une des revendications 1 à 3, caractérisé en ce que le corps isolant tubulaire (4) est en verre et est rendu rugueux par attaque chimique sur son côté intérieur, au moins.
5. Procédé pour fabriquer un parasurtension avec une interruption dans le trait d'amorçage, selon la revendication 1, caractérisé en ce que l'on rend d'abord la distance entre les parties du trait d'amorçage trop petite puis, après fermeture étanche au gaz du parasurtension, on les brûle à la dimension de consigne par application d'une tension et amorçage du parasurtension.
6. Procédé selon la revendication 5, caractérisé en ce que l'on ajoute 0,1 % à 10 % d'oxygène à l'atmosphère gazeuse du parasurtension, lors de l'insertion par fusion des électrodes (1, 2), pour accélérer la combustion du graphite utilisé comme matériau pour le trait d'amorçage (3).
EP82102294A 1981-04-02 1982-03-19 Parafoudre de surtension à décharge de gaz Expired EP0062782B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813113349 DE3113349A1 (de) 1981-04-02 1981-04-02 Gasentladungs-ueberspannungsableiter
DE3113349 1981-04-02

Publications (2)

Publication Number Publication Date
EP0062782A1 EP0062782A1 (fr) 1982-10-20
EP0062782B1 true EP0062782B1 (fr) 1985-08-28

Family

ID=6129168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102294A Expired EP0062782B1 (fr) 1981-04-02 1982-03-19 Parafoudre de surtension à décharge de gaz

Country Status (5)

Country Link
US (1) US4466043A (fr)
EP (1) EP0062782B1 (fr)
JP (1) JPS57176679A (fr)
CA (1) CA1189900A (fr)
DE (2) DE3113349A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11769991B2 (en) 2021-10-05 2023-09-26 Unison Industries, Llc Glow discharge tube with a set of electrodes within a gas-sealed envelope

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680665A (en) * 1985-12-03 1987-07-14 Reliance Comm/Tec Corporation Gas discharge arrester
JPH077699B2 (ja) * 1987-06-19 1995-01-30 松下電工株式会社 サージ吸収素子の製造方法
GB2228822A (en) * 1989-03-01 1990-09-05 Gen Electric Co Plc Electronic devices.
FR2754637A1 (fr) * 1991-03-19 1998-04-17 Thomson Csf Systeme de detection optique protege contre les impulsions electromagnetiques
JPH10335042A (ja) * 1997-03-31 1998-12-18 Shinko Electric Ind Co Ltd 放電管
CN104637761B (zh) * 2015-01-29 2017-01-11 镇江米青机电有限公司 一种瓷管自动画线装置
CN104637760B (zh) * 2015-01-29 2017-01-11 镇江米青机电有限公司 一种画线机夹具
JP6884517B2 (ja) 2016-06-15 2021-06-09 キヤノン株式会社 情報処理装置、情報処理方法及びプログラム
RU198751U1 (ru) * 2019-12-09 2020-07-28 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" Управляемый вакуумный защитный разрядник

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828650B2 (de) * 1978-06-29 1981-07-16 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT174649B (de) * 1951-07-11 1953-04-25 Sprecher & Schuh Ag Überspannungsableiterfunkenstrecke mit Vorionisierung
US2990492A (en) * 1958-10-24 1961-06-27 Gen Electric Electric discharge device
DE1188708B (de) * 1958-10-24 1965-03-11 Gen Electric Entladungseinrichtung, insbesondere UEberspannungsableiter
US3454811A (en) * 1967-04-18 1969-07-08 Bell Telephone Labor Inc Gas tube surge (overload) protection device
US3588576A (en) * 1968-11-25 1971-06-28 Joslyn Mfg & Supply Co Spark-gap device having a thin conductive layer for stabilizing operation
DE2032899C2 (de) * 1970-07-02 1983-07-14 Joslyn Mfg. and Supply Co., 60606 Chicago, Ill. Schutzfunkenstrecke
DE2207009C3 (de) * 1972-02-15 1979-03-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Überspannungsableiter
DE2346174B2 (de) * 1973-09-13 1977-04-07 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter
DE2431236C3 (de) * 1974-06-28 1978-10-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Überspannungsableiter
US4084208A (en) * 1975-03-28 1978-04-11 General Instrument Corporation Gas-filled surge arrestors
US4220912A (en) * 1977-07-20 1980-09-02 Dana Corporation Vehicle speed control circuit tester
JPS54108255A (en) * 1978-02-13 1979-08-24 Kyoto Ceramic Surge absorbing element
DE2834088A1 (de) * 1978-08-03 1980-02-14 Siemens Ag Gasentladungsroehre, insbesondere ueberspannungsableiter
JPS55128283A (en) * 1979-03-27 1980-10-03 Mitsubishi Mining & Cement Co Surge absorbing element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828650B2 (de) * 1978-06-29 1981-07-16 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11769991B2 (en) 2021-10-05 2023-09-26 Unison Industries, Llc Glow discharge tube with a set of electrodes within a gas-sealed envelope

Also Published As

Publication number Publication date
DE3265726D1 (en) 1985-10-03
JPH033353B2 (fr) 1991-01-18
DE3113349A1 (de) 1982-10-21
CA1189900A (fr) 1985-07-02
JPS57176679A (en) 1982-10-30
EP0062782A1 (fr) 1982-10-20
US4466043A (en) 1984-08-14

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