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EP2816683B1 - Multiple spark path - Google Patents

Multiple spark path Download PDF

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Publication number
EP2816683B1
EP2816683B1 EP14401071.7A EP14401071A EP2816683B1 EP 2816683 B1 EP2816683 B1 EP 2816683B1 EP 14401071 A EP14401071 A EP 14401071A EP 2816683 B1 EP2816683 B1 EP 2816683B1
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EP
European Patent Office
Prior art keywords
contact
spark gap
plates
multiple spark
perforation
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EP14401071.7A
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German (de)
French (fr)
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EP2816683A1 (en
Inventor
Jörg ECKARDT
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.)
Obo Bettermann GmbH and Co KG
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Obo Bettermann GmbH and Co KG
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Application filed by Obo Bettermann GmbH and Co KG filed Critical Obo Bettermann GmbH and Co KG
Priority to SI201430212A priority Critical patent/SI2816683T1/en
Publication of EP2816683A1 publication Critical patent/EP2816683A1/en
Application granted granted Critical
Publication of EP2816683B1 publication Critical patent/EP2816683B1/en
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    • 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
    • H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • H01T4/18—Arrangements for reducing height of stacked spark gaps

Definitions

  • the invention relates to a multiple spark gap for lightning arresters, consisting of two contact plates with connection means for electrical conductors and between the contact plates packet-like electrode plates, preferably in the form of round graphite discs, between each of which an annular insulation, preferably in the form of washers made of polytetrafluoroethylene, is arranged wherein the contact plates are connected to each other by connecting means, wherein the electrode plates are preferably perforated centrally and the contact plates are interconnected by a connecting means which engages through the perforation of the electrode plates and the perforation of the annular insulation.
  • Such a multiple spark gap is from the US 2 012 689 A known.
  • Such a multiple line for lightning arresters consists of two contact plates 1 ', 2' with connection means 3 ', 4'zum for connecting electrical conductors. Between the contact plates 1 ', 2' are packet-like electrode plates 5 'are arranged. In the prior art, such electrode plates 5 'are formed in the form of circular graphite disks. Between each one is an annular Insulation 6 'provided in the form of washers made of polytetrafluoroethylene (PTFE). The contact plates 1 ', 2' are interconnected by connecting means.
  • PTFE polytetrafluoroethylene
  • the contact plates 1 ', 2' by four screws 7 'screwed together.
  • the contact plates 1 ', 2' are considerably larger than the electrode plates 5 'and the annular insulation 6'.
  • the corresponding screws 7 ' are outside of the package of electrode plates 5' and insulation 6 'passed and screwed into the other contact plate.
  • the screws 7 ' are surrounded by insulating jackets 8' in the shaft region.
  • a circuit board 9 'held with electrical circuitry, the contact arms on the periphery of the electrode plates 5' with the exception of the left side first electrode plate 5 'contacting contacting.
  • the present invention seeks to provide a multiple spark gap generic type, which is minimized in terms of their space requirements, so that the space required in the installation of such multiple spark gap in corresponding electrical installations can be kept small.
  • each sleeve of insulating material is inserted into the perforation of the electrode plates, which is penetrated by the connecting means, in particular the screw, wherein each sleeve has a radially projecting collar in a matching recess of Furthermore, each sleeve is tapered at its end penetrating the electrode plate and adjoins or engages with the taper on the sleeve following in the assembly target position, the sleeve being inserted into the electrode plate which is adjacent to the provided with threaded contact plate, engages in an annular recess or groove on the end face of the contact plate or connects thereto.
  • the electrode plates are preferably perforated centrally and the contact plates are connected to each other by a connecting means which engages through the perforation of the electrode plates and the perforation of the annular insulators, so that outboard, on the space requirement of the electrode plates, Contact plates and annular insulation addition, no additional space for the installation of fasteners is needed.
  • the connecting means can be guided centrally in a simple form through the entire packet of the multiple spark gap. The assembly is also considerably simplified, because only a connecting means must be positioned and tightened.
  • each sleeve has a radially projecting collar which is inserted into a matching recess of the electrode plate, which depression surrounds the perforation of the electrode plate, the secure positioning of the sleeve is achieved, and this is the case even after the final screwing of the multiple spark gap.
  • each sleeve is tapered at its end penetrating the electrode plate and connects with the tapering of the following in assembly target position sleeve or engages in this, wherein the sleeve which is inserted into the electrode plate, which with Thread education provided adjacent contact plate engages in an annular recess or groove on the end face of the contact plate or connects to this.
  • the connecting means is a screw.
  • the screw consists of electrically conductive material, in particular metal.
  • the screw of conductive material is inserted with its head end in a bushing made of insulating material, in particular plastic, which is arranged in a perforation of the two contact plates and held immovably in the direction of the other contact plate, and with her the head remote end is screwed into a threaded or threaded sleeve of the other contact plate.
  • a bush made of insulating material is inserted into the one of the two contact plates, which is penetrated by the screw in the assembly target position and which receives the head of the screw designed as a cap screw in the assembly target position.
  • the socket can not move in the direction of the other contact plate when the screw is inserted and tightened.
  • the threaded shaft is screwed with the head facing away from the end in a threaded or threaded sleeve of the other contact plate. It will be a solid connection reaches the elements of the multiple spark gap, in addition, there is no electrically conductive connection through the fastening means between the contact plates.
  • the screw made of conductive material is inserted into a hole in one of the two contact plates and is supported with its head on the contact plate, with its end facing away from the head is screwed into a threaded bush made of insulating material, in particular plastic, in a perforation of the other contact plate is held.
  • a screw of conductive material, in particular metal is provided.
  • This passes through a perforation of a contact plate and is supported with its head directly on the contact plate. Your head facing away from the end is screwed into a threaded bush made of insulating material, preferably plastic, which is held in a perforation of the other contact plate, so that an insulated screwing of the elements is achieved.
  • an isolated screw is achieved solely by the fact that the screw consists of appropriate insulating material.
  • the screw of insulating material is inserted into a hole in one of the two contact plates and is supported with its head on the contact plate, wherein the head remote from the end of the screw is screwed into a thread formation of the other contact plate.
  • the electrode plates and the contact plates are formed as circular disks.
  • projections are arranged on the contact plates, which protrude radially from each other in the direction of the contact plates, on the facing surfaces have a transversely directed to the central longitudinal axis of the multiple spark gap groove and between the grooves, engaging in this a circuit board with electrical Beschalterung is held, the contact arms peripherally rests at least on some electrode plates contacting.
  • connection means are formed on the contact plates by metallic contact strips which are fixedly connected to the contact plates on their sides facing away from the electrode plates, e.g. welded or soldered.
  • a housing made of insulating material is plugged onto the complete spark gap.
  • a multiple spark gap for lightning arresters is shown. It consists of two Contact plates 1.2 with connection means 3.4 for electrical conductors and between the contact plates 1.2 arranged in a package-like electrode plates 5.
  • the electrode plates 5 are formed in the embodiment in the form of round graphite disks. Between these, an annular insulation 6 in the form of annular disks made of PTFE is arranged in each case.
  • the contact plates 1,2 are connected to each other by a connecting means 7.
  • the electrode plates 5 are perforated centrally and the contact plates 1,2 are connected to each other by a connecting means 7 which passes through the perforations of the electrode plates 5 and the annular insulation 6 with play.
  • the connecting means 7 is a screw.
  • the connecting means 7 consists of a screw of electrically conductive material, for example metal.
  • the connecting means 7 made of conductive material with its head end in a socket 8 made of insulating material, preferably made of plastic, which is arranged in a perforation 9 of the contact plate 1.
  • this socket 8 by means of the connecting means 7 in the perforation of the contact plate 1 can be inserted, but not pushed through, but held immovably in the direction of the other contact plate 2 in the desired position.
  • the screw (connecting means 7) is screwed into a threaded formation 10 or a threaded sleeve of the other contact plate 2.
  • the connecting means 7 is inserted in the form of a screw of conductive material in a perforation 9 of the contact plate 1 and is supported on the outside of the contact plate 1 with the head.
  • the end facing away from the head of the connecting means 7 is screwed into a threaded bush 11 made of insulating material, preferably plastic, which is held in a perforation 12 of the other contact plate 2.
  • the bushing 11 has a flange edge, which is supported on the outside of the contact plate next to the perforation 12, so that the bush 11 is not further displaced in the direction of the contact plate 1, as the desired position corresponds.
  • the connecting means 7 consists of a screw of insulating material, preferably plastic.
  • This connecting means 7 in the form of a screw made of insulating material is inserted into a perforation 9 of the contact plate 1 and the connecting means 7 is supported on the outside of the contact plate 1 with the head. The head facing away from the end is screwed into a threaded formation 10 of the other contact plate 2.
  • the electrode plates 5, the contact plates 1,2 are formed as circular disks.
  • each sleeve 13 made of insulating material is inserted into the perforation of the electrode plates 5, of the Connecting means 7, in particular the screw, is penetrated.
  • each sleeve 13 has a radially projecting collar, which is preferably inserted flush into a matching recess on one side of the electrode plate 5, which surrounds the perforation of the electrode plate 5.
  • each sleeve 13 may be tapered at its end passing through the electrode plate 5 and be connected with the tapering of the following in assembly target position sleeve 13 or even aligned in this engaging the sleeve 13, which is inserted into the electrode plate 5, the with threaded formation 10 provided contact plate 2 is adjacent, engages in an annular recess or groove on the end face of the contact plate 2 or connects to this.
  • projections 14,15 are formed, which protrude from each other rectified by the contact plates 1,2.
  • the projections 14,15 each have a transverse to the central longitudinal axis of the multiple spark gap groove 16,17.
  • a circuit board 18 is held with electrical circuitry (in mounting target position) the contact arms circumferentially at least on some electrode plates 5 contacting contacts.
  • the electrode plate 5 shown on the left in the figures is not contacted and not connected.
  • connection means 3,4 on the contact plates 1,2 are formed by metallic contact strips, which are fixed in assembly target position fixed to the contact plates 1,2 on their sides facing away from the electrode plates 5, for example by welding.
  • a housing 19 made of insulating material can be plugged onto the complete composite spark gap, which accommodates the spark gap, so that only the connection means 3,4 projecting downwards out of the housing 19.
  • the invention provides an extremely compact multiple spark gap available, which can be easily installed and is highly reliable.

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  • Thermistors And Varistors (AREA)

Description

Die Erfindung betrifft eine Mehrfachfunkenstrecke für Blitzstromableiter, bestehend aus zwei Kontaktplatten mit Anschlussmitteln für elektrische Leiter und zwischen den Kontaktplatten paketartig angeordneten Elektrodenplatten, vorzugsweise in Form von runden Graphitscheiben, zwischen denen jeweils eine ringförmige Isolierung, vorzugsweise in Form von Ringscheiben aus Polytetrafluorethylen, angeordnet ist, wobei die Kontaktplatten durch Verbindungsmittel miteinander verbunden sind, wobei die Elektrodenplatten vorzugsweise mittig gelocht sind und die Kontaktplatten durch ein Verbindungsmittel miteinander verbunden sind, welches die Lochung der Elektrodenplatten und die Lochung der ringförmigen Isolierungen durchgreift.The invention relates to a multiple spark gap for lightning arresters, consisting of two contact plates with connection means for electrical conductors and between the contact plates packet-like electrode plates, preferably in the form of round graphite discs, between each of which an annular insulation, preferably in the form of washers made of polytetrafluoroethylene, is arranged wherein the contact plates are connected to each other by connecting means, wherein the electrode plates are preferably perforated centrally and the contact plates are interconnected by a connecting means which engages through the perforation of the electrode plates and the perforation of the annular insulation.

Eine derartige Mehrfachfunkenstrecke ist aus der US 2 012 689 A bekannt.Such a multiple spark gap is from the US 2 012 689 A known.

Mehrfachfunkenstrecken sind beispielsweise in der EP 1 381 127 B1 beschrieben. Im Stand der Technik ist der Aufbau solcher Mehrfachfunkenstrecken bekannt, wie in Figur 5 gezeigt ist. Eine solche Mehrfachstrecke für Blitzstromableiter besteht aus zwei Kontaktplatten 1',2' mit Anschlussmitteln 3',4'zum Anschluss von elektrischen Leitern. Zwischen den Kontaktplatten 1',2' sind paketartig Elektrodenplatten 5' angeordnet. Im Stand der Technik sind solche Elektrodenplatten 5' in Form von kreisrunden Graphitscheiben ausgebildet. Zwischen diesen ist jeweils eine ringförmige Isolierung 6' in Form von Ringscheiben aus Polytetrafluorethylen (PTFE) vorgesehen. Die Kontaktplatten 1',2' sind durch Verbindungsmittel miteinander verbunden. Bei der herkömmlichen Bauart sind dazu die Kontaktplatten 1',2' durch vier Schrauben 7' miteinander verschraubt. Die Kontaktplatten 1',2' sind erheblich größer als die Elektrodenplatten 5' und die ringförmigen Isolierungen 6'. Die entsprechenden Schrauben 7' sind außen an dem Paket aus Elektrodenplatten 5' und Isolierung 6' vorbeigeführt und jeweils in die andere Kontaktplatte eingeschraubt. Zusätzlich sind die Schrauben 7' durch Isoliermäntel 8' im Schaftbereich umgeben. Des Weiteren ist zwischen den Kontaktplatten 1',2' eine Platine 9' mit elektrischer Beschaltung gehalten, die mit Kontaktarmen umfangsseitig an den Elektrodenplatten 5' mit Ausnahme der linksseitig ersten Elektrodenplatte 5' kontaktierend anliegt.Multiple spark gaps are for example in the EP 1 381 127 B1 described. In the prior art is the structure of such multiple spark gaps known as in FIG. 5 is shown. Such a multiple line for lightning arresters consists of two contact plates 1 ', 2' with connection means 3 ', 4'zum for connecting electrical conductors. Between the contact plates 1 ', 2' are packet-like electrode plates 5 'are arranged. In the prior art, such electrode plates 5 'are formed in the form of circular graphite disks. Between each one is an annular Insulation 6 'provided in the form of washers made of polytetrafluoroethylene (PTFE). The contact plates 1 ', 2' are interconnected by connecting means. In the conventional design, the contact plates 1 ', 2' by four screws 7 'screwed together. The contact plates 1 ', 2' are considerably larger than the electrode plates 5 'and the annular insulation 6'. The corresponding screws 7 'are outside of the package of electrode plates 5' and insulation 6 'passed and screwed into the other contact plate. In addition, the screws 7 'are surrounded by insulating jackets 8' in the shaft region. Furthermore, between the contact plates 1 ', 2' a circuit board 9 'held with electrical circuitry, the contact arms on the periphery of the electrode plates 5' with the exception of the left side first electrode plate 5 'contacting contacting.

Ein solcher Aufbau ist zwar funktionell, jedoch ist der Raumbedarf erheblich, sodass auch ein diese gesamte Mehrfachfunkenstrecke umgebendes Gehäuse relativ groß ausgebildet werden muss. Dies bedeutet aber auch, dass der Installationsplatz für eine solche Mehrfachfunkenstrecke relativ groß ist. Hierdurch ist der Anwendungsbereich eingeschränkt.Although such a structure is functional, but the space requirement is significant, so that a surrounding this entire multiple spark gap housing must be made relatively large. However, this also means that the installation space for such a multiple spark gap is relatively large. This limits the scope of application.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Mehrfachfunkenstrecke gattungsgemäßer Art zu schaffen, die hinsichtlich ihres Raumbedarfes minimiert ist, sodass der Raumbedarf beim Einbau solcher Mehrfachfunkenstrecke in entsprechende elektrische Installationen kleingehalten werden kann.Based on this prior art, the present invention seeks to provide a multiple spark gap generic type, which is minimized in terms of their space requirements, so that the space required in the installation of such multiple spark gap in corresponding electrical installations can be kept small.

Zur Lösung dieser Aufgabe schlägt die Erfindung vor, dass in die Lochung der Elektrodenplatten jeweils eine Hülse aus Isolierstoff eingesetzt ist, die von dem Verbindungsmittel, insbesondere der Schraube, durchgriffen ist, wobei jede Hülse einen radial vorragenden Kragen aufweist, der in eine passende Vertiefung der Elektrodenplatte eingesetzt ist, welche Vertiefung die Lochung der Elektrodenplatte umgibt, wobei ferner jede Hülse an ihrem die Elektrodenplatte durchgreifenden Ende verjüngt ist und mit der Verjüngung an die in Montagesolllage folgende Hülse anschließt oder in diese eingreift, wobei die Hülse, die in die Elektrodenplatte eingesetzt ist, die der mit Gewindeausbildung versehenen Kontaktplatte benachbart ist, in eine ringförmige Ausnehmung oder Nut an der Stirnfläche der Kontaktplatte eingreift oder an diese anschließt.To solve this problem, the invention proposes that in each case a sleeve of insulating material is inserted into the perforation of the electrode plates, which is penetrated by the connecting means, in particular the screw, wherein each sleeve has a radially projecting collar in a matching recess of Furthermore, each sleeve is tapered at its end penetrating the electrode plate and adjoins or engages with the taper on the sleeve following in the assembly target position, the sleeve being inserted into the electrode plate which is adjacent to the provided with threaded contact plate, engages in an annular recess or groove on the end face of the contact plate or connects thereto.

Durch diese Ausgestaltung ist es möglich, die gesamte Mehrfachfunkenstrecke kompakt auszubilden und gegenüber der herkömmlichen Bauart eine erhebliche Raumeinsparung zu erreichen. Insbesondere wird dies dadurch erreicht, dass die Elektrodenplatten vorzugsweise mittig gelocht sind und die Kontaktplatten durch ein Verbindungsmittel miteinander verbunden sind, welches die Lochung der Elektrodenplatten und die Lochung der ringförmigen Isolierungen durchgreift, sodass also außenliegend, über den Raumbedarf der Elektrodenplatten, Kontaktplatten und ringförmigen Isolierungen hinaus kein zusätzlicher Platz für den Einbau von Verbindungsmitteln benötigt wird. Die Verbindungsmittel können in einfacher Form mittig durch das gesamte Paket der Mehrfachfunkenstrecke geführt werden. Die Montage ist zudem erheblich vereinfacht, weil nur ein Verbindungsmittel positioniert und angezogen werden muss.With this configuration, it is possible to make the entire multiple spark gap compact and to achieve a significant space savings compared to the conventional design. In particular, this is achieved in that the electrode plates are preferably perforated centrally and the contact plates are connected to each other by a connecting means which engages through the perforation of the electrode plates and the perforation of the annular insulators, so that outboard, on the space requirement of the electrode plates, Contact plates and annular insulation addition, no additional space for the installation of fasteners is needed. The connecting means can be guided centrally in a simple form through the entire packet of the multiple spark gap. The assembly is also considerably simplified, because only a connecting means must be positioned and tightened.

Durch die Hülsen aus Isolierstoff in der Mitte der Elektrodenplatten wird erreicht, dass die elektrische Schlagweite zwischen aufeinanderliegenden Elektrodenplatten vergrößert wird, damit es nicht zu einem ungewollten Gleitüberschlag an der Mittelschraube aus Kunststoff oder auch zu einem Kurzschluss an der Metallschraube kommen kann.Through the sleeves of insulating material in the middle of the electrode plates is achieved that the electric impact between adjacent electrode plates is increased so that it can not come to an unintentional sliding over the center screw made of plastic or a short circuit to the metal screw.

Dadurch, dass jede Hülse einen radial vorragenden Kragen aufweist, der in eine passende Vertiefung der Elektrodenplatte eingesetzt ist, welche Vertiefung die Lochung der Elektrodenplatte umgibt, wird die sichere Positionierung der Hülse erreicht, wobei dies auch nach der endgültigen Verschraubung der Mehrfachfunkenstrecke der Fall ist.Characterized in that each sleeve has a radially projecting collar which is inserted into a matching recess of the electrode plate, which depression surrounds the perforation of the electrode plate, the secure positioning of the sleeve is achieved, and this is the case even after the final screwing of the multiple spark gap.

Dabei ist aus Gründen der elektrotechnischen Funktionalität vorgesehen, dass jede Hülse an ihrem die Elektrodenplatte durchgreifenden Ende verjüngt ist und mit der Verjüngung an die in Montagesolllage folgende Hülse anschließt oder in diese eingreift, wobei die Hülse, die in die Elektrodenplatte eingesetzt ist, die der mit Gewindeausbildung versehenen Kontaktplatte benachbart ist, in eine ringförmige Ausnehmung oder Nut an der Stirnfläche der Kontaktplatte eingreift oder an diese anschließt.It is provided for reasons of electro-technical functionality that each sleeve is tapered at its end penetrating the electrode plate and connects with the tapering of the following in assembly target position sleeve or engages in this, wherein the sleeve which is inserted into the electrode plate, which with Thread education provided adjacent contact plate engages in an annular recess or groove on the end face of the contact plate or connects to this.

Bevorzugt ist dabei vorgesehen, dass das Verbindungsmittel eine Schraube ist.It is preferably provided that the connecting means is a screw.

Dies ist eine besonders einfache Form des Verbindungsmittels, welches einfach zu betätigen und zu handhaben ist.This is a particularly simple form of lanyard which is easy to manipulate and handle.

Unter Umständen ist auch bevorzugt, dass die Schraube aus elektrisch leitfähigem Material, insbesondere Metall, besteht.It may also be preferred that the screw consists of electrically conductive material, in particular metal.

Dabei ist gegebenenfalls bevorzugt, dass die Schraube aus leitfähigem Material mit ihrem Kopfende in eine Buchse aus Isolierstoff, insbesondere Kunststoff, eingesetzt ist, die in einer Lochung einer der beiden Kontaktplatten angeordnet und in Richtung zur anderen Kontaktplatte unverschieblich gehalten ist, und mit ihrem dem Kopf abgewandten Ende in eine Gewindeausbildung oder Gewindemuffe der anderen Kontaktplatte eingeschraubt ist.It is optionally preferred that the screw of conductive material is inserted with its head end in a bushing made of insulating material, in particular plastic, which is arranged in a perforation of the two contact plates and held immovably in the direction of the other contact plate, and with her the head remote end is screwed into a threaded or threaded sleeve of the other contact plate.

Bei dieser konstruktiven Lösung ist in die eine der beiden Kontaktplatten eine Buchse aus Isolierstoff eingesetzt, die von der Schraube in Montagesolllage durchgriffen ist und die den Kopf der als Kopfschraube ausgebildeten Schraube in der Montagesolllage aufnimmt. Durch entsprechende Abstufung der Buchse aus Isolierstoff und der entsprechenden Aufnahmeöffnung in der Kontaktplatte wird erreicht, dass die Buchse sich nicht in Richtung der anderen Kontaktplatte verschieben kann, wenn die Schraube eingesteckt und angezogen wird. Der Gewindeschaft ist mit dem dem Kopf abgewandten Ende in eine Gewindeausbildung oder Gewindemuffe der anderen Kontaktplatte eingeschraubt. Es wird damit eine feste Verbindung der Elemente der Mehrfachfunkenstrecke erreicht, wobei zudem keine elektrisch leitende Verbindung durch das Befestigungsmittel zwischen den Kontaktplatten besteht.In this constructive solution, a bush made of insulating material is inserted into the one of the two contact plates, which is penetrated by the screw in the assembly target position and which receives the head of the screw designed as a cap screw in the assembly target position. By appropriate gradation of the bushing of insulating material and the corresponding receiving opening in the contact plate is achieved that the socket can not move in the direction of the other contact plate when the screw is inserted and tightened. The threaded shaft is screwed with the head facing away from the end in a threaded or threaded sleeve of the other contact plate. It will be a solid connection reaches the elements of the multiple spark gap, in addition, there is no electrically conductive connection through the fastening means between the contact plates.

Alternativ kann vorgesehen sein, dass die Schraube aus leitfähigem Material in eine Lochung einer der beiden Kontaktplatten eingesetzt ist und sich mit ihrem Kopf an der Kontaktplatte abstützt, wobei ihr dem Kopf abgewandtes Ende in eine Gewindebuchse aus Isolierstoff, insbesondere Kunststoff, eingeschraubt ist, die in einer Lochung der anderen Kontaktplatte gehalten ist.Alternatively, it can be provided that the screw made of conductive material is inserted into a hole in one of the two contact plates and is supported with its head on the contact plate, with its end facing away from the head is screwed into a threaded bush made of insulating material, in particular plastic, in a perforation of the other contact plate is held.

Hierbei ist wiederum eine Schraube aus leitfähigem Material, insbesondere Metall vorgesehen. Diese durchgreift eine Lochung der einen Kontaktplatte und stützt sich mit ihrem Kopf unmittelbar an der Kontaktplatte ab. Ihr dem Kopf abgewandtes Ende ist in eine Gewindebuchse aus Isolierstoff, vorzugsweise Kunststoff eingeschraubt, die in einer Lochung der anderen Kontaktplatte gehalten ist, sodass eine isolierte Verschraubung der Elemente erreicht ist.Here again a screw of conductive material, in particular metal is provided. This passes through a perforation of a contact plate and is supported with its head directly on the contact plate. Your head facing away from the end is screwed into a threaded bush made of insulating material, preferably plastic, which is held in a perforation of the other contact plate, so that an insulated screwing of the elements is achieved.

Eine weitere Alternative wird darin gesehen, dass die Schraube aus Isolierstoff, insbesondere Kunststoff, besteht.Another alternative is seen in that the screw made of insulating material, in particular plastic.

Hierdurch wird eine isolierte Verschraubung schon allein dadurch erreicht, dass die Schraube aus entsprechendem Isolierstoff besteht.As a result, an isolated screw is achieved solely by the fact that the screw consists of appropriate insulating material.

Bevorzugt ist dabei vorgesehen, dass die Schraube aus Isolierstoff in eine Lochung einer der beiden Kontaktplatten eingesteckt ist und mit ihrem Kopf sich an der Kontaktplatte abstützt, wobei das dem Kopf abgewandte Ende der Schraube in eine Gewindeausbildung der anderen Kontaktplatte eingeschraubt ist.Preferably, it is provided that the screw of insulating material is inserted into a hole in one of the two contact plates and is supported with its head on the contact plate, wherein the head remote from the end of the screw is screwed into a thread formation of the other contact plate.

Hierdurch wird eine feste Verbindung der Einzelelemente der Mehrfachfunkenstrecke sichergestellt.As a result, a firm connection of the individual elements of the multiple spark gap is ensured.

Bevorzugt ist zudem vorgesehen, dass die Elektrodenplatten und die Kontaktplatten als Kreisscheiben ausgebildet sind.Preferably, it is also provided that the electrode plates and the contact plates are formed as circular disks.

Des Weiteren ist bevorzugt vorgesehen, dass an den Kontaktplatten Vorsprünge angeordnet sind, die zueinander gleichgerichtet von den Kontaktplatten radial abragen, auf den einander zugewandten Flächen eine quer zur Mittellängsachse der Mehrfachfunkenstrecke gerichtete Nut aufweisen und zwischen den Nuten, in diese eingreifend eine Platine mit elektrischer Beschalterung gehalten ist, die mit Kontaktarmen umfangsseitig mindestens an einigen Elektrodenplatten kontaktierend anliegt.Furthermore, it is preferably provided that projections are arranged on the contact plates, which protrude radially from each other in the direction of the contact plates, on the facing surfaces have a transversely directed to the central longitudinal axis of the multiple spark gap groove and between the grooves, engaging in this a circuit board with electrical Beschalterung is held, the contact arms peripherally rests at least on some electrode plates contacting.

Eine solche Anordnung ist an sich aus dem Stand der Technik bekannt.Such an arrangement is known per se from the prior art.

Des Weiteren ist bevorzugt vorgesehen, dass die Anschlussmittel an den Kontaktplatten durch metallische Kontaktstreifen gebildet sind, die fest mit den Kontaktplatten auf deren den Elektrodenplatten abgewandten Seiten verbunden sind, z.B. verschweißt oder verlötet.Furthermore, it is preferably provided that the connection means are formed on the contact plates by metallic contact strips which are fixedly connected to the contact plates on their sides facing away from the electrode plates, e.g. welded or soldered.

Auch ist bevorzugt vorgesehen, dass auf die komplette Funkenstrecke ein Gehäuse aus Isolierstoff aufgesteckt ist.It is also preferably provided that a housing made of insulating material is plugged onto the complete spark gap.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und im Folgenden näher beschrieben.Embodiments of the invention are illustrated in the drawings and described in more detail below.

Es zeigt:

Figur 1
eine Explosionsdarstellung einer Mehrfachfunkenstrecke mit Mettallschraube und Isolierbuchse;
Figur 2
eine Variante in gleicher Ansicht mit Metallschraube und Gewindebuchse;
Figur 3
eine weitere Variante in gleicher Ansicht mit einer Kunststoffschraube als Verbindungsmittel;
Figur 4
eine komplett verschraubte Funkenstrecke über die ein Gehäuse teilweise aufgeschoben ist, in Ansicht.
It shows:
FIG. 1
an exploded view of a multiple spark gap with Mettallschraube and insulating bushing;
FIG. 2
a variant in the same view with metal screw and threaded bushing;
FIG. 3
a further variant in the same view with a plastic screw as a connecting means;
FIG. 4
a completely screwed spark gap over which a housing is partially pushed, in view.

In den Figuren ist eine Mehrfachfunkenstrecke für Blitzstromableiter gezeigt. Sie besteht aus zwei Kontaktplatten 1,2 mit Anschlussmitteln 3,4 für elektrische Leiter und zwischen den Kontaktplatten 1,2 paketartig angeordneten Elektrodenplatten 5. Die Elektrodenplatten 5 sind im Ausführungsbeispiel in Form von runden Graphitscheiben ausgebildet. Zwischen diesen ist jeweils eine ringförmige Isolierung 6 in Form von Ringscheiben aus PTFE angeordnet. Die Kontaktplatten 1,2 sind durch ein Verbindungsmittel 7 miteinander verbunden. Dazu sind die Elektrodenplatten 5 mittig gelocht und die Kontaktplatten 1,2 sind miteinander durch ein Verbindungsmittel 7 verbunden, welches die Lochungen der Elektrodenplatten 5 und der ringförmigen Isolierungen 6 mit Spiel durchgreift. Im Ausführungsbeispiel ist das Verbindungsmittel 7 eine Schraube.In the figures, a multiple spark gap for lightning arresters is shown. It consists of two Contact plates 1.2 with connection means 3.4 for electrical conductors and between the contact plates 1.2 arranged in a package-like electrode plates 5. The electrode plates 5 are formed in the embodiment in the form of round graphite disks. Between these, an annular insulation 6 in the form of annular disks made of PTFE is arranged in each case. The contact plates 1,2 are connected to each other by a connecting means 7. For this purpose, the electrode plates 5 are perforated centrally and the contact plates 1,2 are connected to each other by a connecting means 7 which passes through the perforations of the electrode plates 5 and the annular insulation 6 with play. In the exemplary embodiment, the connecting means 7 is a screw.

Bei den Ausführungsformen nach Figur 1 und 2 besteht das Verbindungsmittel 7 aus einer Schraube aus elektrisch leitfähigem Material, beispielsweise Metall. Bei der Ausführungsform nach Figur 1 ist das Verbindungsmittel 7 aus leitfähigem Material mit seinem Kopfende in eine Buchse 8 aus Isolierstoff, vorzugsweise aus Kunststoff, eingesetzt, die in einer Lochung 9 der Kontaktplatte 1 angeordnet ist. Durch entsprechende Formgebung ist diese Buchse 8 mittels des Verbindungsmittels 7 in die Lochung der Kontaktplatte 1 einschiebbar, aber nicht durchschiebbar, sondern in Richtung auf die andere Kontaktplatte 2 in der Solllage unverschieblich gehalten. Mit ihrem dem Kopf abgewandten Ende ist die Schraube (Verbindungsmittel 7) in eine Gewindeausbildung 10 oder eine Gewindemuffe der anderen Kontaktplatte 2 eingeschraubt.According to the embodiments FIG. 1 and 2 the connecting means 7 consists of a screw of electrically conductive material, for example metal. In the embodiment according to FIG. 1 is the connecting means 7 made of conductive material with its head end in a socket 8 made of insulating material, preferably made of plastic, which is arranged in a perforation 9 of the contact plate 1. By appropriate shaping this socket 8 by means of the connecting means 7 in the perforation of the contact plate 1 can be inserted, but not pushed through, but held immovably in the direction of the other contact plate 2 in the desired position. With its end facing away from the head, the screw (connecting means 7) is screwed into a threaded formation 10 or a threaded sleeve of the other contact plate 2.

Bei der Ausführungsform nach Figur 2 ist das Verbindungsmittel 7 in Form einer Schraube aus leitfähigem Material in eine Lochung 9 der Kontaktplatte 1 eingesetzt und stützt sich mit dem Kopf an der Kontaktplatte 1 außenseitig ab. Das dem Kopf abgewandte Ende des Verbindungsmittels 7 ist in eine Gewindebuchse 11 aus Isolierstoff, vorzugsweise Kunststoff, eingeschraubt, die in einer Lochung 12 der anderen Kontaktplatte 2 gehalten ist. Die Buchse 11 weist einen Flanschrand auf, der sich an der Außenseite der Kontaktplatte neben der Lochung 12 abstützt, sodass die Buchse 11 nicht weiter in Richtung der Kontaktplatte 1 verschiebbar ist, als der Solllage entspricht.In the embodiment according to FIG. 2 the connecting means 7 is inserted in the form of a screw of conductive material in a perforation 9 of the contact plate 1 and is supported on the outside of the contact plate 1 with the head. The end facing away from the head of the connecting means 7 is screwed into a threaded bush 11 made of insulating material, preferably plastic, which is held in a perforation 12 of the other contact plate 2. The bushing 11 has a flange edge, which is supported on the outside of the contact plate next to the perforation 12, so that the bush 11 is not further displaced in the direction of the contact plate 1, as the desired position corresponds.

Bei der Ausführungsform nach Figur 3 besteht das Verbindungsmittel 7 aus einer Schraube aus Isolierstoff, vorzugsweise Kunststoff. Dieses Verbindungsmittel 7 in Form einer Schraube aus Isolierstoff ist in eine Lochung 9 der Kontaktplatte 1 eingesteckt und das Verbindungsmittel 7 stützt sich mit dem Kopf außenseitig an der Kontaktplatte 1 ab. Das dem Kopf abgewandte Ende ist in eine Gewindeausbildung 10 der anderen Kontaktplatte 2 eingeschraubt.In the embodiment according to FIG. 3 the connecting means 7 consists of a screw of insulating material, preferably plastic. This connecting means 7 in the form of a screw made of insulating material is inserted into a perforation 9 of the contact plate 1 and the connecting means 7 is supported on the outside of the contact plate 1 with the head. The head facing away from the end is screwed into a threaded formation 10 of the other contact plate 2.

Wie aus den Zeichnungen gut ersichtlich, sind die Elektrodenplatten 5, die Kontaktplatten 1,2 als Kreisscheiben ausgebildet.As can be clearly seen from the drawings, the electrode plates 5, the contact plates 1,2 are formed as circular disks.

Des Weiteren ist in die Lochung der Elektrodenplatten 5 jeweils eine Hülse 13 aus Isolierstoff eingesetzt, die von dem Verbindungsmittel 7, insbesondere der Schraube, durchgriffen ist. Vorzugsweise weist jede Hülse 13 einen radial vorragenden Kragen auf, der in eine passende Vertiefung auf einer Seite der Elektrodenplatte 5 vorzugsweise bündig eingesetzt ist, die die Lochung der Elektrodenplatte 5 umgibt. Des Weiteren kann jede Hülse 13 an ihrem die Elektrodenplatte 5 durchgreifenden Ende verjüngt sein und mit der Verjüngung an die in Montagesolllage folgende Hülse 13 angeschlossen oder sogar in diese eingreifend ausgerichtet sein, wobei die Hülse 13, die in die Elektrodenplatte 5 eingesetzt ist, die der mit Gewindeausbildung 10 versehenen Kontaktplatte 2 benachbart ist, in eine ringförmige Ausnehmung oder Nut an der Stirnfläche der Kontaktplatte 2 eingreift oder an diese anschließt.Furthermore, in each case a sleeve 13 made of insulating material is inserted into the perforation of the electrode plates 5, of the Connecting means 7, in particular the screw, is penetrated. Preferably, each sleeve 13 has a radially projecting collar, which is preferably inserted flush into a matching recess on one side of the electrode plate 5, which surrounds the perforation of the electrode plate 5. Furthermore, each sleeve 13 may be tapered at its end passing through the electrode plate 5 and be connected with the tapering of the following in assembly target position sleeve 13 or even aligned in this engaging the sleeve 13, which is inserted into the electrode plate 5, the with threaded formation 10 provided contact plate 2 is adjacent, engages in an annular recess or groove on the end face of the contact plate 2 or connects to this.

An den Kontaktplatten 1,2 sind Vorsprünge 14,15 ausgebildet, die zueinander gleichgerichtet von den Kontaktplatten 1,2 abragen. Auf den zueinander gewandten Flächen weisen die Vorsprünge 14,15 jeweils eine quer zur Mittellängsachse der Mehrfachfunkenstrecke gerichteten Nut 16,17 auf. Zwischen den Nuten 16,17, in diese eingreifend, ist eine Platine 18 mit elektrischer Beschaltung gehalten (in Montagesolllage) die mit Kontaktarmen umfangseitig mindestens an einigen Elektrodenplatten 5 kontaktierend anliegt.At the contact plates 1,2 projections 14,15 are formed, which protrude from each other rectified by the contact plates 1,2. On the mutually facing surfaces, the projections 14,15 each have a transverse to the central longitudinal axis of the multiple spark gap groove 16,17. Between the grooves 16,17, engaging in this, a circuit board 18 is held with electrical circuitry (in mounting target position) the contact arms circumferentially at least on some electrode plates 5 contacting contacts.

Vorzugsweise ist die in den Figuren links gezeigte Elektrodenplatte 5 nicht kontaktiert und nicht beschaltet.Preferably, the electrode plate 5 shown on the left in the figures is not contacted and not connected.

Die Anschlussmittel 3,4 an den Kontaktplatten 1,2 sind durch metallische Kontaktstreifen gebildet, die in Montagesolllage fest mit den Kontaktplatten 1,2 auf deren den Elektrodenplatten 5 abgewandten Seiten verbunden sind, beispielsweise durch Schweißung.The connection means 3,4 on the contact plates 1,2 are formed by metallic contact strips, which are fixed in assembly target position fixed to the contact plates 1,2 on their sides facing away from the electrode plates 5, for example by welding.

Wie in Figur 4 gezeigt, kann auf die komplette zusammengesetzte Funkenstrecke ein Gehäuse 19 aus Isolierstoff aufgesteckt werden, welches die Funkenstrecke aufnimmt, sodass nur die Anschlussmittel 3,4 nach unten aus dem Gehäuse 19 hervorragen.As in FIG. 4 shown, a housing 19 made of insulating material can be plugged onto the complete composite spark gap, which accommodates the spark gap, so that only the connection means 3,4 projecting downwards out of the housing 19.

Die Erfindung stellt eine äußerst kompakt aufgebaute Mehrfachfunkenstrecke zur Verfügung, die einfach montiert werden kann und höchst funktionssicher ist.The invention provides an extremely compact multiple spark gap available, which can be easily installed and is highly reliable.

Claims (11)

  1. A multiple spark gap for lightning current arresters, consisting of two contact plates (1, 2) with connection means (3, 4) for electrical conductors and electrode plates (5) arranged in a package-like manner between the contact plates (1, 2), preferably in the form of round graphite disks, between which one annular insulation piece (6) each is arranged, preferably in the form of annular disks made of polytetrafluoroethylene, the contact plates (1, 2) being connected to each other by connection means (7), the electrode plates (5) being centrally perforated and the contact plates (1, 2) being connected to each other by a connection means (7) passing through the perforation of the electrode plates (5) and the perforation of the annular insulation pieces (6), characterized by that in the perforation of the electrode plates (5) one sleeve (13) each made of an insulation material is fitted that is passed by the connection means (7), in particular the bolt, each sleeve (13) having a radial protruding collar that is fitted in a matching recess of the electrode plate (5), said recess surrounding the perforation of the electrode plate (5), further each sleeve (13) being tapered at its end passing through the electrode plate (5) and being adjacent, in the intended mounting position, with the taper to the sleeve (13) or engaging into the latter, the sleeve (13) that is fitted in the electrode plate (5) adjacent to the contact plate (2) provided with a threaded structure (10) engaging in an annular recess or groove at the front face of the contact plate (2) or adjoining the latter.
  2. The multiple spark gap for lightning current arresters according to claim 1, characterized by that the connection means (7) is a bolt.
  3. The multiple spark gap for lightning current arresters according to one of claims 1 or 2, characterized by that the bolt (7) is made of an electrically conductive material, in particular metal.
  4. The multiple spark gap for lightning current arresters according to one of claims 1 to 3, characterized by that the bolt (7) made of a conductive material is fitted with its head end in a bushing (8) made of an insulation material, in particular plastic, said bushing being arranged in a perforation (9) of one of the two contact plates (1) and being held undisplaceably in the direction to the other contact plate (2), and is screwed with its end showing away from the head into a threaded structure (10) or a threaded sleeve of the other contact plate (2).
  5. The multiple spark gap for lightning current arresters according to one of claims 1 to 3, characterized by that the bolt (7) made of a conductive material is fitted in a perforation (9) of one of the two contact plates (1) and is supported with its head on the contact plate (1), its end showing away from the head being screwed into a threaded bushing (11) made of an insulation material, in particular plastic, which is held in a perforation (12) of the other contact plate (2).
  6. The multiple spark gap for lightning current arresters according to one of claims 1 or 2, characterized by that the bolt (7) is made of an insulation material, in particular plastic.
  7. The multiple spark gap for lightning current arresters according to one of claims 1 and 2 and/or 6, characterized by that the bolt (7) made of an insulation material is fitted in a perforation (9) of one of the two contact plates (1) and is supported with its head on the contact plate (1), the end of the bolt (7) facing away from the head being screwed into a threaded structure (10) of the other contact plate (2).
  8. The multiple spark gap for lightning current arresters according to one of claims 1 to 7, characterized by that the electrode plates (5) and the contact plates (1, 2) are configured as circular disks.
  9. The multiple spark gap for lightning current arresters according to one of claims 1 to 8, characterized by that at the contact plates (1, 2) are arranged projections (14, 15) that protrude radially in the same direction from the contact plates (1, 2), have on the surfaces showing to each other a groove (16, 17) directed transversely to the central longitudinal axis of the multiple spark gap, and between the grooves (16, 17) and engaging therein, a circuit board (18) with electrical components is held, which rests with contact arms at the periphery of at least some electrode plates (5) in a contacting manner.
  10. The multiple spark gap for lightning current arresters according to one of claims 1 to 9, characterized by that the connection means (3, 4) at the contact plates (1, 2) are formed by metal contact strips that are firmly connected to the contact plates (1, 2) on their sides showing away from the electrode plates (5), e.g., are welded or soldered.
  11. The multiple spark gap for lightning current arresters according to one of claims 1 to 10, characterized by that a housing (19) made of an insulation material is fitted over the complete spark gap.
EP14401071.7A 2013-06-19 2014-06-04 Multiple spark path Active EP2816683B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201430212A SI2816683T1 (en) 2013-06-19 2014-06-04 Multiple spark path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201320102647 DE202013102647U1 (en) 2013-06-19 2013-06-19 Multiple spark gap

Publications (2)

Publication Number Publication Date
EP2816683A1 EP2816683A1 (en) 2014-12-24
EP2816683B1 true EP2816683B1 (en) 2017-02-01

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EP (1) EP2816683B1 (en)
DE (1) DE202013102647U1 (en)
SI (1) SI2816683T1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013113614A1 (en) 2013-12-06 2015-06-11 Obo Bettermann Gmbh & Co. Kg Multiple spark gap for lightning protection
DE202015100397U1 (en) * 2015-01-28 2016-05-02 Phoenix Contatct GmbH & Co. KG Spark gap with adaptive cooling and / or damping device
DE102014210516C5 (en) * 2014-06-03 2020-03-26 Phoenix Contact Gmbh & Co. Kg Spark gap
DE102018118898B3 (en) 2018-08-03 2019-10-24 Phoenix Contact Gmbh & Co. Kg Retaining arrangement and arrangement of at least two staple bursts
DE102018118904B3 (en) 2018-08-03 2019-10-17 Phoenix Contact Gmbh & Co. Kg Arrangement of stacked spark gaps and device for holding together and contacting stacked spark gaps
DE102018118906B3 (en) 2018-08-03 2019-10-17 Phoenix Contact Gmbh & Co. Kg Surge protection device
DE102022110329A1 (en) 2022-04-28 2023-11-02 Phoenix Contact Gmbh & Co. Kg Spark gap arrangement
DE102023108834A1 (en) * 2023-04-06 2024-10-10 OBO Bettermann Hungary Kft. Triggered double spark gap

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Publication number Priority date Publication date Assignee Title
DE138352C (en) *
US2012689A (en) * 1933-05-22 1935-08-27 Electric Service Supplies Co Device for and method of protecting lightning arresters and the like against moisture
DE1154189B (en) * 1957-02-20 1963-09-12 Asea Ab Overvoltage protection device
FR2839487B1 (en) 2002-05-07 2004-07-02 Bosch Gmbh Robert PNEUMATIC SERVOMOTOR COMPRISING TUBULAR INTAKE AND BALANCING VALVES
DE10230827A1 (en) 2002-07-09 2004-02-05 Obo Bettermann Gmbh & Co. Kg Spark gap capable of carrying lightning current

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Publication number Publication date
EP2816683A1 (en) 2014-12-24
DE202013102647U1 (en) 2013-06-26
SI2816683T1 (en) 2017-06-30

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