EP0268305B1 - Vorrichtung zum Anschliessen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln an eine elektrische Leitung - Google Patents

Vorrichtung zum Anschliessen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln an eine elektrische Leitung Download PDF

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Publication number
EP0268305B1
EP0268305B1 EP87117174A EP87117174A EP0268305B1 EP 0268305 B1 EP0268305 B1 EP 0268305B1 EP 87117174 A EP87117174 A EP 87117174A EP 87117174 A EP87117174 A EP 87117174A EP 0268305 B1 EP0268305 B1 EP 0268305B1
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.)
Expired - Lifetime
Application number
EP87117174A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0268305A3 (en
EP0268305A2 (de
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.)
Filing date
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/de
Publication of EP0268305A2 publication Critical patent/EP0268305A2/de
Publication of EP0268305A3 publication Critical patent/EP0268305A3/de
Application granted granted Critical
Publication of EP0268305B1 publication Critical patent/EP0268305B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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-proof and firedamp-protected electrical equipment of the "flameproof enclosure” type of protection to an electrical line connected to an electrical energy source according to the preamble of claim 1.
  • fireproof and explosion-proof electrical equipment In potentially explosive areas, especially in underground coal mining, fireproof and explosion-proof electrical equipment is used. 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 live 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 opening the housing and thus canceling the type of protection.
  • 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 wires in a cable increases, the connection of the electrical equipment to the line wires 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, frequent loosening and reconnection of the individual cable cores to the corresponding connections on the equipment is necessary.
  • DE-A-2 243 607 shows a device for connecting pressure vessels and the like to an electrical line
  • the connector intermediate part having a multiplicity of line bushings therein, either on the outside of the housing are designed as a plug part or as a socket part.
  • This intermediate part which is designed for a plurality of lines to be connected, is attached to a housing opening by means of screws.
  • the socket or plug parts to be attached to groups of bushings can be screwed onto the intermediate part via a flange. Either the entire intermediate part with a plurality of cable bushings or a single cable entry, which itself is designed as a socket part or plug part, can be detached.
  • 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 cable cores to corresponding connections of the equipment located in the housing enable.
  • a - in particular cylindrical - ignition-proof gap is provided between the intermediate connector part and the housing, which gap corresponds to the above-mentioned standard EN 50018.
  • the regulations regarding plug-in devices 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 located 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 sleeve which extends from the flange part through the housing opening and an insulating material block which is located in the sleeve and which stores one or more plug pins and / or plug sockets.
  • 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 arranging them inside the sleeve and potting them with epoxy resin.
  • 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 allows existing encapsulated housings to be retrofitted without problems.
  • 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 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. Their 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 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 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 plurality of line wires corresponding to the number of plug sockets located in the insulating block.
  • the plug connection After the plug connection has been made by inserting the intermediate part 8, it is attached to the housing wall 1 by screwing its flange part 9 onto the housing wall with the aid of screws 14.
  • 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 enclosure”.
  • 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 with the aid 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.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Cable Accessories (AREA)
EP87117174A 1986-11-20 1987-11-20 Vorrichtung zum Anschliessen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln an eine elektrische Leitung Expired - Lifetime EP0268305B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117174T ATE102752T1 (de) 1986-11-20 1987-11-20 Vorrichtung zum anschliessen von explosionsund schlagwettergeschuetzten elektrischen betriebsmitteln an eine elektrische leitung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3639599 1986-11-20
DE19863639599 DE3639599A1 (de) 1986-11-20 1986-11-20 Vorrichtung zum anschliessen von explosions- und schlagwettergeschuetzten elektrischen betriebsmitteln an eine elektrische leitung

Publications (3)

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

Family

ID=6314333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117174A Expired - Lifetime EP0268305B1 (de) 1986-11-20 1987-11-20 Vorrichtung zum Anschliessen von explosions- und schlagwettergeschützten elektrischen Betriebsmitteln an eine elektrische Leitung

Country Status (3)

Country Link
EP (1) EP0268305B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE102752T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3639599A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835756A1 (de) * 1988-10-20 1990-04-26 Hemscheidt Maschf Hermann Mehrpoliger steckverbinder fuer steuergeraete im untertage-bergbau
DE4230138A1 (de) * 1992-09-09 1994-03-10 Wilo Gmbh Kabelbefestigungsvorrichtung für eine Pumpe
FR2874462B1 (fr) * 2004-08-17 2008-07-25 Ksb Sas Soc Par Actions Simpli Traversee de paroi antideflagrante

Family Cites Families (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
BE788766A (fr) * 1971-09-23 1973-01-02 Bunker Ramo Assemblages de traversee electriques
JPS54788A (en) * 1977-06-05 1979-01-06 Kouenerugii Butsurigaku Kenkiy Heatable vacuum terminal pin device

Also Published As

Publication number Publication date
DE3639599C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-06-28
DE3789278D1 (de) 1994-04-14
EP0268305A3 (en) 1989-05-10
DE3639599A1 (de) 1988-06-01
EP0268305A2 (de) 1988-05-25
ATE102752T1 (de) 1994-03-15

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