EP0034360B1 - Electrode pour dérivateur de surtension à décharge dans un gaz et dérivateur de surtension muni d'une telle électrode - Google Patents

Electrode pour dérivateur de surtension à décharge dans un gaz et dérivateur de surtension muni d'une telle électrode Download PDF

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Publication number
EP0034360B1
EP0034360B1 EP81101084A EP81101084A EP0034360B1 EP 0034360 B1 EP0034360 B1 EP 0034360B1 EP 81101084 A EP81101084 A EP 81101084A EP 81101084 A EP81101084 A EP 81101084A EP 0034360 B1 EP0034360 B1 EP 0034360B1
Authority
EP
European Patent Office
Prior art keywords
electrode
pin
copper
overvoltage arrester
gas discharge
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
EP81101084A
Other languages
German (de)
English (en)
Other versions
EP0034360A1 (fr
Inventor
Gerhard Ing. Grad Lange
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 EP0034360A1 publication Critical patent/EP0034360A1/fr
Application granted granted Critical
Publication of EP0034360B1 publication Critical patent/EP0034360B1/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
    • 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
    • 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
    • H01T4/02—Details
    • 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
    • H01T4/04—Housings

Definitions

  • the invention relates to electrodes of a gas discharge surge arrester according to the preamble of claim 1.
  • Powerful surge arresters must be able to discharge surge currents ⁇ 10 kA. In the case of double-line surge arresters, this means that a total current ⁇ 20 kA flows through a common center electrode. Such high surge currents cause electrical contact connections to cause the contact material to spatter, thereby damaging the sockets. A better electrical connection for such currents is provided by soldered connection wires, which generally consist of copper and then have a diameter of approximately 1 mm. Copper is also preferably chosen for the electrode material for electrical and economic reasons. The fixed connection between the electrode and the connecting wire can then be made by soldering or welding.
  • Such electrodes are known from DE-OS 2 828 650.
  • the possibility is described there of soldering a tubular rivet to the bottom of the cup-shaped electrode and then squeezing the connecting wire into the tubular rivet (FIG. 4).
  • a welded connection is intended to "press" a cylinder onto the bottom of the cup-shaped electrode, the diameter of which is approximately 1.5 times the diameter of the connecting wire.
  • the connecting wire is butt-welded onto this cylinder.
  • This cylinder has the task of dissipating heat During the welding process, welding to the smooth bottom of the electrode or to the outer surface of a central electrode would not be possible with a material that is a good conductor of current and therefore also a good conductor of heat, such as copper.
  • GB-PS 243 700 proposes to butt-weld copper strands to the supply lines to an evacuated discharge vessel, which should consist of tungsten or molybdenum, which are held together at the end by a metal ring.
  • copper tips can be welded well with different materials, but they are not up to the high current load required for surge arresters and the associated mechanical forces.
  • DE-OS 2 160 115 and 2 714 248 show gas-filled surge arresters with connecting pins, the length of which is a multiple of their diameter. If these spigots are made of copper, they will melt and collapse when a copper connecting wire is welded on.
  • connection wires that have a diameter of about 1 mm, this leads to unequal temperatures of the two parts to be connected, a usable connection cannot be achieved.
  • the present invention is based on the object of designing the electrodes of a gas discharge surge arrester in such a way that long-term resistance welding for welding the connecting wires of e.g. 1 mm diameter can be used that this long-term resistance welding can be made with automatic welding machines for economic reasons and that mechanically and electrically reliable connections can be achieved.
  • This object is achieved by the characterizing features of patent claim 1.
  • the design and dimensioning according to the invention enables a secure welded connection.
  • the coordinated, reduced heat dissipation from the welding zone of the electrode achieves the same high temperature of the two parts to be connected, which is particularly necessary for welding copper to copper.
  • the mechanical strength and electrical load-bearing capacity of the connection are guaranteed.
  • two configurations are possible for the pin. Either it is created during the manufacture of the electrode without machining by direct shaping, for example in an extrusion process, or it is formed after the manufacture of the electrode by machining, for example by milling.
  • a cup-shaped electrode with a thickened bottom projects into the interior of the gas discharge surge arrester on the bottom side, which points outward, in the interior of the bowl, a pin.
  • an annular central electrode additionally carries a pin on at least one peripheral point on its outside.
  • a tubular insulator 1 carries a cup-shaped electrode 2 or 3 at its two ends and an annular central electrode 4.
  • the edge of the cup-shaped electrodes lies on the end faces of the insulator 1 and protrude axially into the interior of the insulator 1 with their solid bottoms.
  • a cylindrical pin 5 made of the same material, for example copper, sits centrally and points outward.
  • the end face of an electrical connecting wire 6 made of copper is welded onto the outer end face of the pin.
  • the diameter of the pin 5 is approximately nine tenths, the axial length approximately six tenths as the optimum from the range five to eight tenths of the diameter of the connecting wire 6.
  • the central electrode 4 with a larger outer diameter than that of the insulator 1 carries a radial one at a peripheral point protruding pin 7 with the same dimensions as the pin 5.
  • the end face of a connecting wire 8 made of copper is welded onto the outer end face of the pin 7.
  • the pins 5 and 7 are formed, at least in their rough dimensions, simultaneously with the manufacture of the electrodes 2, 3 and 4, for example by an extrusion process. Machining rework is advantageous for precise dimensioning.
  • a two-section gas discharge surge arrester is shown in longitudinal section, in which two tubular insulators 9 and 10 are axially aligned with an axially intermediate annular center electrode 11 and at their other ends with a cup-shaped electrode 12 and 13 respectively
  • the inside of the electrodes 11 to 13 are each made solid with opposing stair-shaped active electrode surfaces. They are made of copper.
  • the edges of the electrodes 12 and 13 rest on the respective end faces of the insulators 9 and 10.
  • Ring grooves are milled into each of the bowl bases, thereby forming pins 14, the outer end faces of which do not protrude beyond the outside of the bowl bases.
  • the outer end faces of the pins 14 are the welding connection surfaces with the end faces of connecting wires 15 made of copper.
  • the pins 14 again have a diameter of approximately nine tenths and a length of approximately six tenths of the wire diameter.
  • a radially outwardly projecting pin 16 is formed at an outer peripheral point of the center electrode 11 by radial milling of an annular groove, and a connecting wire 17 made of copper is welded onto its outer end face.
  • the dimensioning corresponds to that of the pin 14.
  • FIGS. 5 and 6 corresponds to that of FIGS. 3 and 4, only with the difference that the annular groove, which forms the pin 18 on the outer axis of the central electrode, is expanded, so that a whole of the central electrode 11 Segment, apart from the pin 18, is lifted off. That means there is no edge part of the center electrode 11 which coaxially surrounds the pin 18.
  • a connecting wire 19 is welded onto the pin 18. The dimensioning corresponds to that of the pin 16.

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Details Of Resistors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (6)

1. Electrode en cuivre (2, 3, 4, 11, 12, 13) d'un dérivateur de surtensions à décharge dans un gaz, avec laquelle est relié d'une pièce un appendice (5, 7, 14, 16, 18) également fait avec du cuivre et auquel est relié par soudure bout à bout et par résistance un fil de raccordement en cuivre (6, 8, 15, 17, 19), caractérisée par le fait que le diamètre du fil de raccordement (6, 8, 15, 17, 19) est de l'ordre de grandeur de 1 mm et que l'appendice (5, 7, 14, 16, 18) possède un diamètre d'environ neuf-dixièmes et une longueur de cinq à huit, de préférence de six-dixièmes du diamètre du fil de cuivre (6, 8, 15, 17, 19) à souder.
2. Electrode selon la revendication 1, caractérisée par le fait que l'appendice (5, 7) est, lors de la fabrication de l'électrode (2, 3, 4), conformé sur celle-ci suivant le procédé par formage parfluage.
3. Electrode selon la revendication 1, caractérisée par le fait que l'appendice (14, 16, 18) est, après la fabrication de l'électrode (11, 12, 13), formé par un traitement par enlèvement de copeaux.
4. Electrode selon l'une des revendications 1 à 3, caractérisée par le fait qu'elle est réalisée sous la forme d'un godet avec un fond épaissi et porte, sur les côtés des fonds qui sont dirigés avec l'extérieur, à l'intérieur du godet, un appendice (5, 14).
5. Mise en oeuvre d'électrodes selon l'une des revendications 1-4, pour un dérivateur de surtensions à décharge dans un gaz à une voix, et pourvu de deux électrodes.
6. Mise en oeuvre d'électrodes pour un dérivateur de surtensions à décharge dans un gaz et à deux voies, possédant deux électrodes selon l'une des revendications 1-4 et une électrode intermédiaire supplémentaire, de forme annulaire (4, 11).
EP81101084A 1980-02-19 1981-02-16 Electrode pour dérivateur de surtension à décharge dans un gaz et dérivateur de surtension muni d'une telle électrode Expired EP0034360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3006193A DE3006193C2 (de) 1980-02-19 1980-02-19 Elektrische Anschlußverbindung der Elektroden eines Gasentladungs-Überspannungsableiters
DE3006193 1980-02-19

Publications (2)

Publication Number Publication Date
EP0034360A1 EP0034360A1 (fr) 1981-08-26
EP0034360B1 true EP0034360B1 (fr) 1984-11-14

Family

ID=6095005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101084A Expired EP0034360B1 (fr) 1980-02-19 1981-02-16 Electrode pour dérivateur de surtension à décharge dans un gaz et dérivateur de surtension muni d'une telle électrode

Country Status (4)

Country Link
US (1) US4362962A (fr)
EP (1) EP0034360B1 (fr)
JP (1) JPS56136485A (fr)
DE (1) DE3006193C2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959822A (en) * 1995-12-22 1999-09-28 Hubbell Incorporated Compact lightning arrester assembly
DE19731312A1 (de) * 1997-07-15 1999-01-28 Siemens Ag Überspannungsableiter mit äußerer Kurzschlußeinrichtung
DE19928320A1 (de) 1999-06-16 2001-01-04 Siemens Ag Elektrisch leitende Verbindung zwischen einer Endelektrode und einem Anschlußdraht
JP4319750B2 (ja) * 2000-01-05 2009-08-26 新光電気工業株式会社 三極放電管
EE05453B1 (et) 2001-03-28 2011-08-15 Schering Corporation Protsess asetidinoonvahehendite valmistamiseks
DE102005036265A1 (de) * 2005-08-02 2007-02-08 Epcos Ag Funkenstrecke
JP2009508320A (ja) 2005-09-14 2009-02-26 リッテルフューズ，インコーポレイティド ガス入りサージアレスタ、活性化化合物、点火ストライプ及びその方法
JP4847911B2 (ja) * 2007-03-30 2011-12-28 岡谷電機産業株式会社 電子部品

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828650A1 (de) * 1978-06-29 1980-01-03 Siemens Ag Ueberspannungsableiter

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Publication number Priority date Publication date Assignee Title
GB243700A (en) * 1924-11-26 1926-04-01 Westinghouse Electric & Mfg Co Improvements relating to joining electric conductors
US2427727A (en) * 1943-09-24 1947-09-23 Gen Electric Leading-in wire
US2790656A (en) * 1953-03-31 1957-04-30 Kaiser Aluminium Chem Corp Aluminum-dissimilar metal joint and method of making same
US2740915A (en) * 1954-10-18 1956-04-03 Jennings Radio Mfg Corp Adjustable spark gap
US3278778A (en) * 1963-04-26 1966-10-11 Westinghouse Electric Corp High-current seal for electric discharge lamp
CH444276A (de) * 1965-03-17 1967-09-30 Cerberus Ag Ueberspannungsableiter mit Edelgasfüllung
US3422302A (en) * 1967-04-11 1969-01-14 Wagner Electric Corp Lamp lead wire terminal
US3509405A (en) * 1968-07-01 1970-04-28 Gen Electric Coaxial vacuum gap devices including doubly reentrant electrode assemblies
DE1951015C3 (de) * 1969-10-09 1979-02-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Herstellen eines Überspannungsknopf ableiten
DE7112842U (de) * 1971-04-02 1971-09-09 Siemens Ag Gasentladungs-ueberspannungsableiter
FR2149661A5 (fr) * 1971-08-19 1973-03-30 Commissariat Energie Atomique
JPS4834721U (fr) * 1971-08-25 1973-04-26
DE2160115C3 (de) * 1971-12-03 1978-09-28 Ernest Alekseevitsch Avilov Gasgefüllter Ableiter
US4188561A (en) * 1977-01-14 1980-02-12 Joslyn Mfg. And Supply Co. Station protector spark gap applique
DE2714248A1 (de) * 1977-03-30 1978-10-05 Siemens Ag Gasentladungs-ueberspannungsableiter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828650A1 (de) * 1978-06-29 1980-01-03 Siemens Ag Ueberspannungsableiter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"GUIDE DE L'UTILISATEUR DU SOUDAGE MANUEL", 3e édition, 1974, S. 91/92 u. 154/155 *
J. Ruge, Handbuch der Schweisstechnik, 1974, S. 156-159, S. 263-285, S. 304-307 *

Also Published As

Publication number Publication date
JPH0126152B2 (fr) 1989-05-22
JPS56136485A (en) 1981-10-24
EP0034360A1 (fr) 1981-08-26
DE3006193C2 (de) 1984-04-12
US4362962A (en) 1982-12-07
DE3006193A1 (de) 1981-08-27

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