EP0268305A2 - Explosion-proof and flame-proof connecting device of production facilities to an electric line - Google Patents

Explosion-proof and flame-proof connecting device of production facilities to an electric line Download PDF

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Publication number
EP0268305A2
EP0268305A2 EP87117174A EP87117174A EP0268305A2 EP 0268305 A2 EP0268305 A2 EP 0268305A2 EP 87117174 A EP87117174 A EP 87117174A EP 87117174 A EP87117174 A EP 87117174A EP 0268305 A2 EP0268305 A2 EP 0268305A2
Authority
EP
European Patent Office
Prior art keywords
housing
plug
proof
conductor
intermediate part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87117174A
Other languages
German (de)
French (fr)
Other versions
EP0268305B1 (en
EP0268305A3 (en
Inventor
Werner Friess
Jürgen Dr. Rackles
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.)
L3 Magnet Motor GmbH
Original Assignee
Magnet Motor Gesellschaft fuer Magnetmotorische Technik GmbH
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.)
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Publication date
Application filed by Magnet Motor Gesellschaft fuer Magnetmotorische Technik GmbH filed Critical Magnet Motor Gesellschaft fuer Magnetmotorische Technik GmbH
Priority to AT87117174T priority Critical patent/ATE102752T1/en
Publication of EP0268305A2 publication Critical patent/EP0268305A2/en
Publication of EP0268305A3 publication Critical patent/EP0268305A3/en
Application granted granted Critical
Publication of EP0268305B1 publication Critical patent/EP0268305B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/707—Structural association with built-in electrical component with built-in switch interlocked with contact members or counterpart
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel

Definitions

  • the invention relates to a device for connecting explosion and fireproof electrical equipment of the type of protection "flameproof enclosure” to an electrical line connected to an electrical energy source, with a cable entry, which is attached to the outside of the housing, which surrounds a housing opening and the includes the line inserted through the housing opening.
  • Firedamp-proof and explosion-proof electrical equipment is used in potentially explosive areas, especially in underground coal mining. These devices have a housing that corresponds to the "flameproof enclosure” type of protection.
  • plug-in devices for the electrical equipment mentioned require that plug-in devices must be locked either mechanically or electrically in such a way that they can only be removed from the power supply and that the contacts are not under voltage can be placed if they are separated. These provisions do not apply to plug-in devices that are located inside a pressure-resistant housing and can only be actuated after the housing has been opened and the type of protection has been canceled.
  • the electrical equipment in encapsulated housings has been connected to a power source using the above-mentioned cable entries by individually connecting cable wires. With only a few cable wires, the connection made individually for each wire is still possible with a relatively short expenditure of time. However, if the number of cores in a cable increases, connecting the electrical equipment to the cable cores is tedious and time-consuming, and the risk of wiring errors increases. In particular, if the electrical equipment has to be used frequently at different locations, it is necessary to loosen and reconnect the individual line wires frequently to the corresponding connections on the equipment.
  • the invention has for its object to provide a device of the type mentioned, which makes it possible, using already approved cable entries for housings of the "flameproof enclosure” type of protection, to quickly connect a large number of line wires to corresponding connections of the equipment located in the housing enable.
  • a - in particular cylindrical - ignition-proof gap is provided between the connector intermediate part and the housing, which gap corresponds to the above-mentioned standard EN 50018.
  • the regulations regarding connectors on explosion-proof and firedamp-proof electrical equipment do not apply to the interior of pressure-resistant housings. If the screw connection of the cable entry is loosened from the housing, the type of protection is deemed to be canceled. The plug connection that is only accessible then no longer needs to meet the special requirements of explosion or firedamp protection.
  • a large number of cable cores can be separated from the electrical equipment in the housing by practically a single handle. The connection is done in reverse order.
  • the invention thus provides a means which allows the rapid connection and disconnection of electrical equipment of the "flameproof enclosure" type of protection to or from an electrical line. Since cable entries can be used for which an approval has already been granted, and these cable entries do not have to be modified in any way, the invention provides an inexpensive means for connecting electrical equipment in underground mining and in companies with potentially explosive atmospheres.
  • the intermediate part has a flange part which can be fastened to the housing with screws, a sleeve which extends from the flange part through the housing opening and an insulating material block located in the sleeve and which stores one or more plug pins and / or plug sockets , having.
  • the intermediate part designed in this way is a relatively simple component.
  • the flange part and the cylindrical sleeve are preferably formed in one piece.
  • the plug pins and / or plug sockets can be stored within the area of the cylindrical sleeve by that they are placed inside the sleeve and potted with epoxy.
  • a receiving part is arranged in the interior of the housing in alignment with the housing opening, the receiving part consisting of a receiving sleeve and an insulating body which supports one or more plug sockets and / or plug pins corresponding to the pins or sockets in the intermediate part.
  • the receiving part according to the invention can be screwed onto the inside of the housing with the aid of screws, surrounding the housing opening.
  • the receiving part forms a plug connection together with the connector intermediate part according to the invention.
  • the invention permits the trouble-free retrofitting of existing encapsulated housings.
  • the single figure shows a longitudinal sectional view through a device for connecting an electrical equipment located in an encapsulated housing to an electrical line.
  • part of a housing wall 1 with a housing opening is shown of a housing of the "flameproof enclosure” type of protection, not shown here.
  • a receptacle sleeve 4 for an insulating material body 5 is fastened to the housing wall 1 with the aid of a flange 2 and screws 3 passing through it.
  • the central axis of the receiving sleeve 4 is aligned with the central axis of the housing opening.
  • the insulating material body 5 which consists, for example, of epoxy resin, serves for the storage and holding of several connector pins, of which two connector pins 6 and 7 of different diameters are shown here.
  • An intermediate part 8 is inserted into the housing opening from the right side in the figure, that is to say from the outside of the housing.
  • the intermediate part 8 contains a flange part 9 designed as an annular flange, a cylinder sleeve 11 and an insulating material block 10 seated in the cylinder sleeve 11, which consists, for example, of epoxy resin.
  • the cylinder sleeve 11 is formed in one piece with the flange part 9. Its outer diameter is adapted to the inner diameter of the housing opening.
  • plug sockets 12 and 13 receive the plug pins 7 and 6 stored in the insulating material body 5 when the intermediate part 8 is inserted into the housing opening and the receiving part formed by the receiving sleeve 4 and the insulating material body 5 inside the housing.
  • the stripped ends of line wires 20 and 21 connected to the plug sockets 12 and 13 run into the interior of a line cable 19.
  • the line cable 19 contains a large number of line wires corresponding to the number of plug sockets located in the insulating block.
  • the flange part 9 forms part of the housing in this state.
  • a cable entry 15 is now attached to this “housing part” 9.
  • This cable entry 15 is a cable entry that is approved for the type of housing in question here of the type of protection "flameproof encapsulation”.
  • the cable entry 15 has a fastening part 16 with an annular flange 17 which is fastened to the flange part 9 of the intermediate part 8 by means of screws 18. Since the flange part 9 is by definition part of the housing, because it is firmly connected to the housing wall 1, the cable entry 15, for which an authorization already exists can be used. No structural changes need to be made at the cable entry.
  • the cable entry 15 is first removed from the housing or from the flange part 9 locked with the housing wall 1 by loosening the screws 18.
  • the encapsulated housing is thereby opened, so that the plug device 8 can then be pulled, although the plug device may not be de-energized.
  • the intermediate part 8 and the receiving sleeve 4 consist of metal, while the insulating block 10 and the insulating body 5 consist of epoxy resin.
  • the number of cable cores and therefore the plug / socket units is not subject to any particular restrictions.
  • fiber optic or other plug connections are also possible.
  • the special configuration of the plug device itself is not limited to the exemplary embodiment described above. It is only necessary to ensure that there is a fixed connection between the intermediate part 8 and the housing wall 1, which can only be opened after the line connection has been released.
  • the - preferably cylindrical - gap between the connector intermediate part 8 and the housing 1 is designed as an ignition-proof gap in accordance with EN 50018.

Abstract

Explosion and flame-proof electrical equipment, that is to say equipment with a housing of the "pressure-proof encapsulation" protection type, must satisfy specific regulations relating to connection to electrical conductors. The regulation applying to plug-in devices is that these must be interlocked such that they can be withdrawn only when they are not live. There are specific conductor inlets for such equipment which already have official approval. However, with a large number of conductors or conductor wires, the individual connection of the conductor wires to the equipment inside the housing is tiresome. The invention produces a plug-connector intermediate part which is attached to the housing and cannot be released until the approved conductor inlet has been released. The intermediate part permits quick connection of electrical equipment of the said type to an electrical conductor. When the conductor inlet is released, the housing is regarded as being open so that the said instructions for plug-in devices do not apply. A normal plug-connector is thus fitted inside the housing, which allows a plurality of types of conductor to be connected quickly.

Description

Die Erfindung betrifft eine Vorrichtung zum Anschließen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln der Zündschutzart "Druckfeste Kapselung" an eine mit einer elektrischen Energiequelle in Verbindung stehendeelektrische Leitung , mit einer Leitungseinfüh­rung, die an der Außenseite des Gehäuses befestigt ist, die eine Gehäuseöffnung umgibt und die die durch die Ge­häuseöffnung eingeführte Leitung umfaßt.The invention relates to a device for connecting explosion and fireproof electrical equipment of the type of protection "flameproof enclosure" to an electrical line connected to an electrical energy source, with a cable entry, which is attached to the outside of the housing, which surrounds a housing opening and the includes the line inserted through the housing opening.

In explosionsgefährdeten Bereichen, insbesondere im unter­tägigen Kohlebergbau, gelangen schlagwettergeschützte und explosionsgeschützte elektrische Betriebsmittel zum Ein­satz. Diese Betriebsmittel besitzen ein Gehäuse, welches der Zündschutzart "Druckfeste Kapselung" entspricht.Firedamp-proof and explosion-proof electrical equipment is used in potentially explosive areas, especially in underground coal mining. These devices have a housing that corresponds to the "flameproof enclosure" type of protection.

Die für die genannten elektrischen Betriebsmittel ein­schlägige Norm EN 50014, Nr.19 und EN 50018 Nr.12.3 (Steckvorrichtungen) fordert, daß Steckvorrichtungen entweder mechanisch oder elektrisch so verriegelt sein müssen, daß sie nur span­nungslos gezogen werden können und daß die Kontakte nicht unter Spannung gesetzt werden können, wenn sie getrennt sind. Diese Bestimmungen gelten nicht für Steckvorrichtungen, die sich im Inneren eines druckfesten Gehäuses befinden und erst nach Öffnen des Gehäuses und damit Aufhebung der Zünd­schutzart betätigt werden können.The relevant standards EN 50014, No. 19 and EN 50018 No. 12.3 (plug-in devices) for the electrical equipment mentioned require that plug-in devices must be locked either mechanically or electrically in such a way that they can only be removed from the power supply and that the contacts are not under voltage can be placed if they are separated. These provisions do not apply to plug-in devices that are located inside a pressure-resistant housing and can only be actuated after the housing has been opened and the type of protection has been canceled.

Für druckfeste Gehäuse der Zündschutzart "Druckfeste Kap­selung" gibt es bereits spezielle Leitungseinführungen, das sind auf das in das Gehäuse eingeführte Kabel- oder Leitungsende gesetzte, etwa zylindrische Körper mit einem Ringflansch, wobei der Ringflansch fest mit dem Gehäuse verschraubt wird. Diese Leitungseinführung umfaßt den Iso­liermantel der Leitung. Es gibt Leitungseinführungen mit einer behördlichen Zulassung für die obengenannten gekap­selten Gehäuse.There are already special cable entries for flameproof enclosures of the "flameproof enclosure" type of protection, that is to the cable or cable inserted into the enclosure Cable end set, approximately cylindrical body with a ring flange, the ring flange is screwed to the housing. This cable entry includes the insulating jacket of the cable. There are cable entries with official approval for the above-mentioned encapsulated housings.

Bislang wurden die elektrischen Betriebsmittel in gekapsel­ten Gehäusen unter Verwendung der obenerwähnten Leitungs­einführungen durch einzelnes Anschließen von Leitungsadern mit einer Energiequelle verbunden. Bei nur wenigen Leitungs­adern ist das für jede Ader einzel vorgenommene Anschließen noch mit verhältnismäßig geringem Zeitaufwand möglich. Er­höht sich aber in einem Kabel die Anzahl der Adern, so ist das Anschließen des elektrischen Betriebsmittels an die Leitungsadern mühsam und zeitaufwendig, und die Gefahr von Verdrahtungsfehlern erhöht sich. Insbesondere dann, wenn das elektrische Betriebsmittel häufig an verschiedenen Orten eingesetzt werden muß, ist ein häufiges Lösen und er­neutes Verbinden der einzelnen Leitungsadern mit den ent­sprechenden Anschlüssen am Betriebsmittel notwendig.Hitherto, the electrical equipment in encapsulated housings has been connected to a power source using the above-mentioned cable entries by individually connecting cable wires. With only a few cable wires, the connection made individually for each wire is still possible with a relatively short expenditure of time. However, if the number of cores in a cable increases, connecting the electrical equipment to the cable cores is tedious and time-consuming, and the risk of wiring errors increases. In particular, if the electrical equipment has to be used frequently at different locations, it is necessary to loosen and reconnect the individual line wires frequently to the corresponding connections on the equipment.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die es ermöglicht, unter Verwendung bereits zugelassener Leitungseinführungen für Gehäuse der Zündschutzart "Druckfeste Kapselung" ein rasches Anschließen einer Vielzahl von Leitungsadern an entsprechende Anschlüsse des in dem Gehäuse befindlichen Betriebsmittels zu ermöglichen.The invention has for its object to provide a device of the type mentioned, which makes it possible, using already approved cable entries for housings of the "flameproof enclosure" type of protection, to quickly connect a large number of line wires to corresponding connections of the equipment located in the housing enable.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein in die Gehäuseöffnung eingesetztes oder am Gehäuse angeordnetes Steckverbinder-Zwischenteil, das an dem Gehäuse befestigt ist, und an dem ihrerseits die Leitungseinführung befestigt ist.This object is achieved according to the invention by an intermediate connector part inserted into the housing opening or arranged on the housing, which is fastened to the housing and to which in turn the cable entry is fastened.

Vorzugsweise wird zwischen Steckverbinder-Zwischenteil und Gehäuse ein - insbesondere zylindrischer - zünddurchschlag­sicherer Spalt vorgesehen, welcher der oben genannten Norm EN 50018 entspricht.Preferably, a - in particular cylindrical - ignition-proof gap is provided between the connector intermediate part and the housing, which gap corresponds to the above-mentioned standard EN 50018.

Wie oben erwähnt wurde, gelten die Vorschriften betreffend Steckvorrichtungen an explosions- und schlagwettergeschütz­ten elektrischen Betriebsmitteln nicht für den Innenraum von druckfesten Gehäusen. Wenn die Verschraubung der Lei­tungseinführung von dem Gehäuse gelöst wird, gilt die Zündschutzart als aufgehoben. Die dann erst zugängliche Steckverbindung braucht somit nicht mehr den besonderen An­forderungen des Explosions- bzw. Schlagwetterschutzes zu genügen. Nachdem die Leitungseinführung ge­löst und abgenommen ist, kann mit Hilfe des erfindungsge­mäßen Steckverbinder-Zwischenteils durch praktisch einen einzigen Handgriff eine Vielzahl von Leitungsadern von dem in dem Gehäuse befindlichen elektrischen Betriebs­mittel getrennt werden. Das Anschließen erfolgt in umge­kehrter Reihenfolge. Die Erfindung schafft also ein Mittel, welches das schnelle Anschließen und das schnelle Trennen elektrischer Betriebsmittel der Zündschutzart "Druckfeste Kapselung" an bzw. von einer elektrischen Leitung gestattet. Da Leitungseinführungen verwendet werden können, für die bereits eine Zulassung erteilt wurde, und diese Leitungsein­führungen baulich in keiner Weise geändert werden müssen, stellt die Erfindung ein kostengünstiges Mittel für den Anschluß von elektrischen Betriebsmitteln im untertägigen Bergbau und in Betrieben mit explosionsgefährdeten Bereichen zur Verfü­gung.As mentioned above, the regulations regarding connectors on explosion-proof and firedamp-proof electrical equipment do not apply to the interior of pressure-resistant housings. If the screw connection of the cable entry is loosened from the housing, the type of protection is deemed to be canceled. The plug connection that is only accessible then no longer needs to meet the special requirements of explosion or firedamp protection. After the cable entry has been released and removed, with the aid of the connector intermediate part according to the invention, a large number of cable cores can be separated from the electrical equipment in the housing by practically a single handle. The connection is done in reverse order. The invention thus provides a means which allows the rapid connection and disconnection of electrical equipment of the "flameproof enclosure" type of protection to or from an electrical line. Since cable entries can be used for which an approval has already been granted, and these cable entries do not have to be modified in any way, the invention provides an inexpensive means for connecting electrical equipment in underground mining and in companies with potentially explosive atmospheres.

In einer speziellen Ausführungsform der Erfindung ist vor­gesehen, daß das Zwischenteil einen mit Schrauben an dem Gehäuse befestigbaren Flanschteil, eine von dem Flanschteil sich durch die Gehäuseöffnung erstreckende Hülse und einen in der Hülse befindlichen Isolierstoffblock, der ein oder mehrere Steckerstifte und/Steckerbuchsen in sich lagert, aufweist. Bei dem so ausgebildeten Zwischenteil handelt es sich um ein relativ einfaches Bauteil. Vorzugsweise sind Flanschteil und zylindrische Hülse einstückig ausgebildet. Die Steckerstifte und/oder Steckerbuchsen können innerhalb des Bereichs der zylindrischen Hülse dadurch gelagert werden, daß sie innerhalb der Hülse angeordnet und mit Epoxydharz vergossen werden.In a special embodiment of the invention, it is provided that the intermediate part has a flange part which can be fastened to the housing with screws, a sleeve which extends from the flange part through the housing opening and an insulating material block located in the sleeve and which stores one or more plug pins and / or plug sockets , having. The intermediate part designed in this way is a relatively simple component. The flange part and the cylindrical sleeve are preferably formed in one piece. The plug pins and / or plug sockets can be stored within the area of the cylindrical sleeve by that they are placed inside the sleeve and potted with epoxy.

Im Inneren des Gehäuses ist erfindungsgemäß ein Aufnahme­teil fluchtend mit der Gehäuseöffnung angeordnet, wobei das Aufnahmeteil aus einer Aufnahmehülse und einem Iso­lierstoffkörper besteht, der ein oder mehrere Stecker­buchsen und/oder Steckerstifte entsprechend den Stiften bzw. Buchsen in dem Zwischenteil lagert. Das erfindungs­gemäße Aufnahmeteil kann - die Gehäuseöffnung umgebend - ­an der Innenseite des Gehäuses mit Hilfe von Schrauben festgeschraubt werden. Das Aufnahmeteil bildet zusammen mit dem erfindungsgemäßen Steckverbinder-Zwischteil eine Steckverbindung.According to the invention, a receiving part is arranged in the interior of the housing in alignment with the housing opening, the receiving part consisting of a receiving sleeve and an insulating body which supports one or more plug sockets and / or plug pins corresponding to the pins or sockets in the intermediate part. The receiving part according to the invention can be screwed onto the inside of the housing with the aid of screws, surrounding the housing opening. The receiving part forms a plug connection together with the connector intermediate part according to the invention.

Die Erfindung gestattet das problemlose Nachrüsten bereits existierender gekapselter Gehäuse.The invention permits the trouble-free retrofitting of existing encapsulated housings.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Die einzige Figur zeigt eine Längsschnittansicht durch eine Vorrichtung zum Anschließen eines in einem gekapselten Gehäuse befindlichen elektrischen Betriebsmittels an eine elektrische Leitung.The single figure shows a longitudinal sectional view through a device for connecting an electrical equipment located in an encapsulated housing to an electrical line.

In der Figur ist von einem hier nicht näher dargestellten Gehäuse der Zündschutzart "Druckfeste Kapselung" ein Teil einer Gehäusewand 1 mit einer Gehäuseöffnung dargestellt.In the figure, part of a housing wall 1 with a housing opening is shown of a housing of the "flameproof enclosure" type of protection, not shown here.

Auf der in der Figur links dargestellten Innenseite des Gehäuses ist mit Hilfe eines Flansches 2 und diesen durch­setzenden Schrauben 3 eine Aufnahmehülse 4 für einen Iso­lierstoffkörper 5 an der Gehäusewand 1 befestigt. Die Mittelachse der Aufnahmehülse 4 fluchtet mit der Mittel­achse der Gehäuseöffnung.On the inside of the housing shown on the left in the figure, a receptacle sleeve 4 for an insulating material body 5 is fastened to the housing wall 1 with the aid of a flange 2 and screws 3 passing through it. The central axis of the receiving sleeve 4 is aligned with the central axis of the housing opening.

Der Isolierstoffkörper 5, der zum Beispiel aus Epoxydharz besteht, dient zur Lagerung und Halterung mehrerer Stecker­stifte, von denen hier zwei Steckerstifte 6 und 7 unter­schiedlichen Durchmessers dargestellt sind.The insulating material body 5, which consists, for example, of epoxy resin, serves for the storage and holding of several connector pins, of which two connector pins 6 and 7 of different diameters are shown here.

Von der rechten Seite in der Figur her, also von der Außenseite des Gehäuses her ist in die Gehäuseöffnung ein Zwischenteil 8 eingesetzt. Das Zwischenteil 8 enthält ein als Ringflansch ausgebildetes Flanschteil 9, eine Zylinderhülse 11 und einen in der Zylinderhülse 11 sitzenden Isolierstoffblock 10, der zum Beispiel aus Epoxydharz be­steht. Die Zylinderhülse 11 ist einstückig mit dem Flansch­teil 9 ausgebildet. Ihr Außendurchmesser ist an den Innen­durchmesser der Gehäuseöffnung angepaßt.An intermediate part 8 is inserted into the housing opening from the right side in the figure, that is to say from the outside of the housing. The intermediate part 8 contains a flange part 9 designed as an annular flange, a cylinder sleeve 11 and an insulating material block 10 seated in the cylinder sleeve 11, which consists, for example, of epoxy resin. The cylinder sleeve 11 is formed in one piece with the flange part 9. Its outer diameter is adapted to the inner diameter of the housing opening.

Im Inneren des Isolierstoffblocks 10 befinden sich mehr­ere Steckerbuchsen, von denen in der Zeichnung stellver­tretend zwei Steckerbuchsen 12 und 13 unterschiedlichen Durchmessers dargestellt sind. Die Steckerbuchsen 12 und 13 nehmen die in dem Isolierstoffkörper 5 gelagerten Steckerstifte 7 bzw. 6 auf, wenn das Zwischenteil 8 in die Gehäuseöffnung und das durch die Aufnahmehülse 4 und den Isolierstoffkörper 5 gebildete Aufnahmeteil im Inneren des Gehäuses eingesteckt wird.Inside the insulating material block 10 there are several plug sockets, of which two plug sockets 12 and 13 of different diameters are shown in the drawing. The plug sockets 12 and 13 receive the plug pins 7 and 6 stored in the insulating material body 5 when the intermediate part 8 is inserted into the housing opening and the receiving part formed by the receiving sleeve 4 and the insulating material body 5 inside the housing.

In dem Isolierstoffblock 10 laufen die an die Steckerbuch­sen 12 und 13 angeschlossenen, abisolierten Enden von Lei­tungsadern 20 und 21 in das Innere eines Leitungskabels 19. Das Leitungskabel 19 enthält eine Vielzahl von Leitungs­adern entsprechend der Anzahl der in dem Isolierstoffblock befindlichen Steckerbuchsen.In the insulating block 10, the stripped ends of line wires 20 and 21 connected to the plug sockets 12 and 13 run into the interior of a line cable 19. The line cable 19 contains a large number of line wires corresponding to the number of plug sockets located in the insulating block.

Nach dem Herstellen der Steckverbindung durch Einschieben des Zwischenteils 8 wird dieses an der Gehäusewand 1 be­festigt, indem sein Flanschteil 9 mit Hilfe von Schrauben 14 an der Gehäusewand festgeschraubt wird.After the plug connection has been made by inserting the intermediate part 8, it is fastened to the housing wall 1 by screwing its flange part 9 onto the housing wall using screws 14.

Das Flanschteil 9 bildet in diesem Zustand einen Teil des Gehäuses. An diesem "Gehäuseteil" 9 wird nun eine Lei­tungseinführung 15 befestigt. Diese Leitungseinführung 15 ist eine Leitungseinführung, die zugelassen ist für die hier in Rede stehende Art von Gehäusen der Zündschutzart "Druckfeste Kapselung". Die Leitungseinführung 15 besitzt ein Befestigungsteil 16 mit einem Ringflansch 17, der mit Hilfe von Schrauben 18 an dem Flanschteil 9 des Zwischen­teils 8 befestigt wird. Da das Flanschteil 9 definitions­gemäß ein Teil des Gehäuses ist, weil es mit der Gehäuse­wand 1 fest verbunden ist, kann die Leitungseinführung 15, für die bereits eine Zulassung existiert, verwendet werden. An der Leitungseinführung brauchen keinerlei bauliche Veränderungen vorgenommen zu werden.The flange part 9 forms part of the housing in this state. A cable entry 15 is now attached to this “housing part” 9. This cable entry 15 is a cable entry that is approved for the type of housing in question here of the type of protection "flameproof encapsulation". The cable entry 15 has a fastening part 16 with an annular flange 17 which is fastened to the flange part 9 of the intermediate part 8 by means of screws 18. Since the flange part 9 is by definition part of the housing, because it is firmly connected to the housing wall 1, the cable entry 15, for which an authorization already exists can be used. No structural changes need to be made at the cable entry.

Zum Lösen der Verbindung zwischen den einzelnen Stecker­stiften in dem Isolierstoffkörper 5 und den in dem Isolier­stoffblock 10 befindlichen Steckerbuchsen wird zunächst durch Lösen der Schrauben 18 die Leitungseinführung 15 von dem Gehäuse bzw. von dem mit der Gehäusewand 1 ver­riegelten Flanschteil 9 entfernt. Definitionsgemäß wird dadurch das gekapselte Gehäuse geöffnet, so daß dann die Steckvorrichtung 8 gezogen werden kann, obschon die Steck­vorrichtung möglicherweise nicht spannungslos ist.To release the connection between the individual plug pins in the insulating material body 5 and the plug sockets located in the insulating material block 10, the cable entry 15 is first removed from the housing or from the flange part 9 locked with the housing wall 1 by loosening the screws 18. By definition, the encapsulated housing is thereby opened, so that the plug device 8 can then be pulled, although the plug device may not be de-energized.

Bei dem oben beschriebnen Ausführungsbeispiel bestehen das Zwischenteil 8 und die Aufnahmehülse 4 aus Metall, während der Isolierstoffblock 10 und der Isolierstoffkör­per 5 aus Epoxydharz bestehen.In the exemplary embodiment described above, the intermediate part 8 and the receiving sleeve 4 consist of metal, while the insulating block 10 and the insulating body 5 consist of epoxy resin.

Die Anzahl der Leitungsadern und mithin der Steckerstift/­Steckerbuchsen-Einheiten ist keinen besonderen Beschrän­kungen unterworfen. Es sind insbesondere auch Lichtleiter- ­oder andere Steckverbindungen möglich. Auch die spezielle Ausgestaltung der Steckvorrichtung an sich ist nicht auf das oben beschriebene Ausführungsbeispiel beschränkt. Es muß nur dafür Sorge getragen werden, daß eine feste Ver­bindung zwischen dem Zwischenteil 8 und der Gehäusewand 1 existiert, die erst nach Lösen der Leitungsverbindung ge­öffnet werden kann.The number of cable cores and therefore the plug / socket units is not subject to any particular restrictions. In particular, fiber optic or other plug connections are also possible. The special configuration of the plug device itself is not limited to the exemplary embodiment described above. It is only necessary to ensure that there is a fixed connection between the intermediate part 8 and the housing wall 1, which can only be opened after the line connection has been released.

Damit die Anordnung der Norm EN 50018 entspricht, ist der - ­vorzugsweise zylindrische - Spalt zwischen dem Steckverbinder­Zwischenteil 8 und dem Gehäuse 1 als zünddurchschlagsicherer Spalt entsprechend der EN 50018 ausgebildet.So that the arrangement complies with the EN 50018 standard, the - preferably cylindrical - gap between the connector intermediate part 8 and the housing 1 is designed as an ignition-proof gap in accordance with EN 50018.

Claims (3)

1. Vorrichtung zum Anschließen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln der Zündschutzart "Druckfeste Kapselung" an eine mit einer elektrischen Energiequelle in Verbindung stehende elek­trische Leitung, mit einer Leitungseinführung (15), die an der Außenseite des Gehäuses (1) befestigt ist, die eine Gehäuseöffnung umgibt und die die durch die Gehäuse­öffnung eingeführte Leitung umfaßt,
gekennzeichnet
durch ein in die Gehäuseöffnung eingesetztes oder am Ge­häuse angordnetes Steckverbinder-Zwischenteil (8), das an dem Gehäuse (1) befestigt ist und an dem ihrerseits die Leitungseinführung (15, 17) befestigt ist.1. Device for connecting explosion-proof and firedamp-proof electrical equipment of the "flameproof enclosure" type of protection to an electrical line connected to an electrical energy source, with a cable entry (15) which is fastened to the outside of the housing (1) surrounds a housing opening and comprises the line inserted through the housing opening,
featured
by means of a connector intermediate part (8) inserted into the housing opening or arranged on the housing, which is fastened to the housing (1) and to which in turn the cable entry (15, 17) is fastened. 2. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß das Zwischenteil (8) einen mit Schrauben (14) an dem Gehäuse befestigbaren Flanschteil (9), eine von dem Flanschteil (9) sich durch die Gehäuseöffnung erstreckende Hülse (11) und einen in der Hülse (11) befindlichen Iso­lierstoffblock (10), der ein oder mehrere Steckerstifte und/oder Steckerbuchsen (12, 13) in sich lagert, aufweist.2. Device according to claim 1,
characterized,
that the intermediate part (8) with a flange (9) attachable to the housing with screws (14), one of the Flange part (9) extending through the housing opening sleeve (11) and in the sleeve (11) located insulating block (10), which stores one or more connector pins and / or connector sockets (12, 13). 3. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß im Inneren des Gehäuses (1) ein Aufnahmeteil (4, 5) fluchtend mit der Gehäuseöffnung angeordnet ist, und daß das Aufnahmeteil aus einer Aufnahmehülse (4) und einen Isolierstoffkörper (5) besteht, der ein oder mehrere Steckerbuchsen und/oder Steckerstifte (6, 7) entsprechend den Steckerstiften bzw. den Steckerbuchsen in dem Zwischen­teil (8) lagert.3. Device according to claim 2,
characterized,
that in the interior of the housing (1) a receiving part (4, 5) is arranged in alignment with the housing opening, and that the receiving part consists of a receiving sleeve (4) and an insulating body (5) which has one or more plug sockets and / or plug pins ( 6, 7) in accordance with the plug pins or the plug sockets in the intermediate part (8).
EP87117174A 1986-11-20 1987-11-20 Explosion-proof and flame-proof connecting device of production facilities to an electric line Expired - Lifetime EP0268305B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117174T ATE102752T1 (en) 1986-11-20 1987-11-20 DEVICE FOR CONNECTING EXPLOSION AND FLASHING WEATHER PROTECTED ELECTRICAL EQUIPMENT TO AN ELECTRICAL CABLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639599 DE3639599A1 (en) 1986-11-20 1986-11-20 DEVICE FOR CONNECTING EXPLOSION- AND FLASH-PROTECTED ELECTRICAL EQUIPMENT TO AN ELECTRICAL LINE
DE3639599 1986-11-20

Publications (3)

Publication Number Publication Date
EP0268305A2 true EP0268305A2 (en) 1988-05-25
EP0268305A3 EP0268305A3 (en) 1989-05-10
EP0268305B1 EP0268305B1 (en) 1994-03-09

Family

ID=6314333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117174A Expired - Lifetime EP0268305B1 (en) 1986-11-20 1987-11-20 Explosion-proof and flame-proof connecting device of production facilities to an electric line

Country Status (3)

Country Link
EP (1) EP0268305B1 (en)
AT (1) ATE102752T1 (en)
DE (2) DE3639599A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835756A1 (en) * 1988-10-20 1990-04-26 Hemscheidt Maschf Hermann MULTIPOLE CONNECTOR FOR CONTROL UNITS IN UNDERGROUND MINING
EP1628368A1 (en) * 2004-08-17 2006-02-22 Ksb S.A.S Explosion-proof cable feedthrough

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230138A1 (en) * 1992-09-09 1994-03-10 Wilo Gmbh Cable fastening device for a pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB796174A (en) * 1955-09-20 1958-06-04 Electricals Ltd Improvements in or relating to electric connectors incorporating cable glands
DE2243607A1 (en) * 1971-09-23 1973-03-29 Bunker Ramo ELECTRICAL FEED-THROUGH ARRANGEMENT
FR2393446A1 (en) * 1977-06-05 1978-12-29 Nat Lab High Energy Physics MULTI-SPINDLE VACUUM SUPPLY BUSHING THAT CAN BE COOKED

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB796174A (en) * 1955-09-20 1958-06-04 Electricals Ltd Improvements in or relating to electric connectors incorporating cable glands
DE2243607A1 (en) * 1971-09-23 1973-03-29 Bunker Ramo ELECTRICAL FEED-THROUGH ARRANGEMENT
FR2393446A1 (en) * 1977-06-05 1978-12-29 Nat Lab High Energy Physics MULTI-SPINDLE VACUUM SUPPLY BUSHING THAT CAN BE COOKED

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835756A1 (en) * 1988-10-20 1990-04-26 Hemscheidt Maschf Hermann MULTIPOLE CONNECTOR FOR CONTROL UNITS IN UNDERGROUND MINING
EP1628368A1 (en) * 2004-08-17 2006-02-22 Ksb S.A.S Explosion-proof cable feedthrough
FR2874462A1 (en) * 2004-08-17 2006-02-24 Ksb Sas Sas ANTI-FLAGING WALL THROUGH

Also Published As

Publication number Publication date
DE3789278D1 (en) 1994-04-14
DE3639599C2 (en) 1990-06-28
EP0268305B1 (en) 1994-03-09
EP0268305A3 (en) 1989-05-10
DE3639599A1 (en) 1988-06-01
ATE102752T1 (en) 1994-03-15

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