EP3065228A1 - Dispositif de fixation de cable protege contre l'explosion - Google Patents

Dispositif de fixation de cable protege contre l'explosion Download PDF

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Publication number
EP3065228A1
EP3065228A1 EP16158088.1A EP16158088A EP3065228A1 EP 3065228 A1 EP3065228 A1 EP 3065228A1 EP 16158088 A EP16158088 A EP 16158088A EP 3065228 A1 EP3065228 A1 EP 3065228A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
shaped body
plug connection
detachable plug
sealing element
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.)
Withdrawn
Application number
EP16158088.1A
Other languages
German (de)
English (en)
Inventor
Zeljko Krecelj
Dragomir Gakovic
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.)
Schienie Magnettechnik and Elektronik GmbH
Original Assignee
Schienie Magnettechnik and Elektronik 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 Schienie Magnettechnik and Elektronik GmbH filed Critical Schienie Magnettechnik and Elektronik GmbH
Publication of EP3065228A1 publication Critical patent/EP3065228A1/fr
Withdrawn legal-status Critical Current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
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
    • H01R13/5045—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together different pieces being assembled by press-fit
    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet

Definitions

  • the invention relates to a releasable plug-in connection, which is arranged in a flameproof enclosure.
  • explosion-protected electrical equipment is used in particular in potentially explosive areas, for example in underground coal mining or in the chemical industry. Such equipment is a source of ignition and is designed so that a potentially explosive atmosphere can not be ignited.
  • ignition protection The person skilled in various designs for preventing ignitions known as so-called ignition protection.
  • DIN EN 60079-1 for example DIN EN 60079-1 (VDE 0170-5): 2008-04)
  • the DIN EN 60079-1 and its contents are expressly used for the disclosure in relation to the present invention.
  • Vergusskapselung Another known type of protection is the so-called Vergusskapselung, in which all electrical components and the electrical power supply within an electrical equipment are surrounded by a potting material of certain thickness. Voids are filled by the casting agent so that no flammable atmosphere can get into the equipment, for example in the form of volatile gases. Furthermore, the potting compound of a Vergusskapselung prevent electrical sparks from the equipment can escape to the outside. Thus, it can also be ensured that an explosive mixture according to the outside can not be ignited by an electric spark.
  • an electrical supply line generally referred to as a cable for the equipment is usually firmly connected to the electrical equipment and in the equipment by a specially approved for explosion protection line feedthrough, a so-called cable gland, is performed.
  • flameproof enclosure all electrical components in a pressure-tight encapsulated Housing, whereby a flammable atmosphere may penetrate according to the regulations in a resource. A spark occurring within the equipment may occur and may also ignite the internal atmosphere. However, a spark must not leave the area of the flameproof enclosure, as this could ignite a potentially explosive atmosphere that is outside the equipment.
  • protection type "Ex d” (so-called flameproof enclosure)
  • the ignitable atmosphere is ignited within the protection type construction, as long as it is ensured that a spark generated therein can not escape to the outside.
  • the so-called “flameproof enclosure” is a type of protection in which parts which can ignite an explosive atmosphere are arranged in a housing which withstands the pressure of the explosion of an explosive mixture in the interior. A transfer of the explosion to the surrounding the housing explosive atmosphere is prevented. This is essentially due to the fact that the explosion pressure in the housing depends on its free internal volume and on the shape of the housing.
  • DIN EN 60079-1 The requirements for this type of protection are listed in DIN EN 60079-1.
  • gaps between housing parts are provided, which must be designed accordingly so that escaping gases outside the housing have no ignitability. This means that the gaps in their length and width must not fall below certain values.
  • the present invention is therefore based on the object to provide a connector for resources for hazardous areas, which is inexpensive to manufacture and reduces maintenance, replacement or repair costs.
  • a detachable plug-in connection for connecting at least one electrical line to an operating means, for example a solenoid valve or an electric motor, comprising a first connecting element, for example a connecting bush and a second connecting element, for example a connecting plug and a sleeve-shaped body, is proposed.
  • both connecting elements are releasably connectable to each other and the first connecting element is connected to the operating means and the second connecting element is connected to the at least one electrical line.
  • the connecting elements are arranged in the sleeve-shaped body between the operating means and at least one sealing element, wherein the at least one sealing element is arranged plug-in connection of the connecting elements in the assembled state relative to the sleeve-shaped body so gap-free sealing that the plug-in connection is arranged in a flameproof enclosure.
  • gap-free sealing without complex geometry of the connector is thus realized by means of a cost-producible connection possibility of a resource to an electrical line that maintenance, replacement or repair work on this or on the electrical line are greatly simplified.
  • the releasable plug connection according to the invention is characterized in particular by the fact that an electrical connection with a resource can be provided without dissolving the flameproof enclosure or having to open the resource.
  • the sealing element can be made of elastic material and preferably of rubber.
  • sealing element used to seal the plug-in connection without a gap is very important. Sealing materials made of elastic material allow a particularly good seal. Rubber is particularly suitable here.
  • a particularly advantageous embodiment of the invention provides that the sleeve-shaped body is detachably connected to a housing portion of the operating means or at least partially formed by a recess in this threaded portion.
  • the sleeve-shaped body from the housing portion of the equipment for cleaning or repair purposes is easily disassembled or assembled.
  • the plug connection can be arranged in the interior of the housing section, wherein a separate sleeve is not necessary.
  • the manufacturing cost can be reduced because it can be dispensed with an additional component.
  • a further particularly advantageous embodiment of the invention provides that the sleeve-shaped body may preferably be permanently connected to the first connecting element.
  • the sleeve-shaped body and the first connecting element can be designed as a one-piece component.
  • a one-piece component means a reduced installation effort and a further consolidation of the connector in the presence of an increased pressure within the resource or sleeve-shaped body.
  • the sleeve-shaped body can be made of metal. It is also particularly advantageous that the first connecting element is made of plastic.
  • Existing cable glands are usually made of metal and can therefore be used, whereby no separate production costs incurred.
  • the production of the first connecting element as a plastic injection-molded part is also inexpensive and additionally provides the required insulator properties.
  • a further embodiment provides that both connecting elements can be arranged in the assembled state within the opening of the housing section.
  • the sleeve-shaped body has a shorter length, whereby the material and thus the cost of the sleeve-shaped body is reduced.
  • possible risks of damage to the sleeve-shaped body, such as shear fracture, are reduced, which is of great importance in explosion-proof areas.
  • the sleeve-shaped body can have at its end facing the operating means a constant or conical diameter, in particular with a threaded section, provided for fastening in the housing section.
  • a further advantageous embodiment of the invention provides that in the sleeve-shaped body inner peripheral side, a bearing surface may be provided for supporting the sealing element.
  • the support surface is arranged circumferentially within the sleeve-shaped body.
  • a fastening means can be detachably mounted on the sleeve-shaped body, as a result of which the sealing element can be compressed directly or indirectly.
  • Sealing elements in the form of a pinch seal or stuffing box are established and are especially suitable for sealing rotationally symmetrical spaces. This is done by an axial pressure and a radial pressure.
  • the fastening means may have an external or internal thread.
  • This external or internal thread can cooperate in a further embodiment with a corresponding internal or external thread on the sleeve-shaped body.
  • a further preferred embodiment provides that in the sleeve-shaped body, a clamping ring between the sealing element and the fastening means may be provided.
  • the clamping ring may be made of metal.
  • the clamping ring may be made of plastic.
  • the clamping ring and, as a consequence, the sealing element is uniformly compressed by the fastening element and the sealing effect is ensured by the sealing element.
  • the mechanical stress of the clamping ring can thus be made of different materials.
  • the invention provides that the connecting elements, the sealing element and the clamping ring can be arranged in the opening of the housing section and / or that the fastening means in the assembled state can be connected to the sleeve-shaped body and flange-like against the housing section in that the detachable plug connection can be arranged in a flameproof enclosure.
  • a further embodiment of the invention also provides that the second connection element can be permanently connected to the electrical line.
  • the electrical line is encapsulated in such a way that the second connecting element is permanently connected to the electrical line.
  • the sleeve-shaped body may have a tool engagement surface.
  • the tool-engaging surface reinforces the sleeve-shaped body.
  • a further embodiment of the invention provides that the tool engagement surface can be arranged in a flange manner on the side facing away from the housing section of the equipment.
  • a further embodiment of the invention provides that the fastening means can be configured as a means for strain relief.
  • housing section can be understood to mean the housing directly surrounding the equipment. It may also be understood to mean the equipment surrounding covers of the resource housing, such as lids.
  • the housing section ensures explosion protection against the equipment in any case.
  • the term “sleeve-shaped” is essentially an elongated hollow body, in particular a hollow-cylindrical body is to be understood, wherein the inner and outer diameter of the hollow cylinder may be designed differently and need not be continuous.
  • the term “sleeve-shaped” any geometric body can be understood, which may be formed on the outside or inside peripheral n-sided.
  • the present invention is related to the explosion protection in particular the degree of protection "flameproof enclosure".
  • protection class 3 is familiar to the person skilled in the art.
  • the explosion-proof cable bushing for pressure-resistant encapsulation in the classic sense has the task of enabling electrical connection without having to compromise on IP protection (International Protection).
  • FIG. 1 the detachable connector 1 according to the invention is shown.
  • the detachable connector 1 is a electrical line 2 connected to a non-illustrated operating means 3.
  • a sleeve-shaped body 5 is detachably arranged in the housing section 4.
  • the sleeve-shaped body 5 projects out of the housing section 4 on the region facing away from the operating means 3.
  • first connecting element 6 and a second connecting element 7 are arranged within the sleeve-shaped body 5. Both connecting elements 6, 7 have contact pins 8 and female contacts 9, with which an electrical contact between the two connecting elements 6, 7 is made possible.
  • the first connecting element 6 is connected in a manner not shown with a resource 3 and the second connecting element with the electrical line 2.
  • the operating means 3 is connected to the electrical line 2 in the case of connected connecting plugs 6, 7.
  • a sealing element 10 is sealingly arranged gap-free.
  • the sealing element 10 is held or compressed by a clamping ring 11 by means of a fastening means 12 in its position.
  • a radial pressure By an axial pressure also takes place a radial pressure, whereby the gap-free sealing effect according to the invention is provided.
  • the sleeve-shaped body 5 has on the inner circumference side a bearing surface 13 against which the sealing element 10 is pressed axially and as a result of which the radial expansion of the sealing element 10 is made possible in order to provide the sealing effect.
  • the sealing element 10, 110 can enable IP protection (International Protection) of the operating means 3, 103.
  • the invention can provide that the sealing element 10, 110 is formed as an O-ring.
  • the invention can provide that the sealing element 10, 110 IP protection (International Protection) and explosion protection, in particular the degree of protection "flameproof enclosure” can allow.
  • IP protection International Protection
  • explosion protection in particular the degree of protection "flameproof enclosure” can allow.
  • the sleeve-shaped body 5 has inner diameter side on different diameters.
  • the diameter of the sleeve-shaped body 5 corresponds approximately to the diameter of the opening of the housing section 4 minus the wall thickness of the sleeve-shaped body 5.
  • an enlarged inner diameter is present in the region in which the sealing element 10 is arranged. This inner diameter substantially corresponds to the outer diameter of the sealing element 10.
  • the sleeve-shaped body 5 has on the outer circumference a flange 14 which bears against the housing section 4.
  • the flange 14 is designed as a tool engagement surface 15.
  • the outer diameter of the sleeve-shaped body 5 are designed differently. In the region of the housing section 4, the outer diameter of the sleeve-shaped body 5 essentially corresponds to that of the housing section 4. At the region of the housing section 4 facing away from the operating means 3, the sleeve-shaped body 5 has an enlarged outer diameter. As already mentioned, this outer diameter is also configured as a flange. In the further course decreases the outer diameter of the sleeve-shaped body 5, however, has a relation to the outer diameter in the region of the housing portion 4 further enlarged outer diameter.
  • FIG. 2 Another embodiment is in FIG. 2 shown.
  • an electrical line 102 is connected to a non-illustrated operating means 103.
  • the operating means 103 which has a housing portion 104 is in the FIG. 2 arranged to the left of this housing portion 104.
  • the sleeve-shaped body can also be considered as a housing portion 104.
  • a first connecting member 106 and a second connecting member 107 are arranged within the housing portion 104. Both connecting elements 106, 107 have contact pins 108 and contact sockets 109, with which an electrical contact between the two connecting elements 106, 107 is made possible.
  • the first connecting element 106 is connected in a manner not shown with a resource 103 and the second connecting element 107 with the electrical line 102.
  • the operating means 103 is connected to the electrical line 102 when the connecting plugs 106, 107 are connected.
  • a sealing element 110 is sealingly arranged gap-free.
  • the sealing element 110 is held or compressed by a clamping ring 111 by means of a fastening means 112 in its position.
  • a radial pressure By an axial pressure also takes place a radial pressure, whereby the gap-free sealing effect according to the invention is provided.
  • the housing portion 104 has on the inner circumference side a support surface 113, against which the sealing element 110 is pressed axially and as a result of which the radial expansion of the sealing element 110 is made possible in order to provide the sealing effect.
  • an electrical connection of a resource 3, 103 is realized within a flameproof enclosure.
  • Such an electrical connection is realized within the sleeve-shaped body 5.
  • the flameproof enclosure takes place inside the sleeve-shaped body 5.
  • the fastener 112 has a flange 114 and a tool engagement surface 115.
  • the housing portion 104 has different diameters. The diameter decreases towards the resource. In the area of the bearing surface 113, the diameter of the housing section corresponds approximately to the outer diameter of the sealing element 110.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP16158088.1A 2015-03-05 2016-03-01 Dispositif de fixation de cable protege contre l'explosion Withdrawn EP3065228A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015103230.9A DE102015103230A1 (de) 2015-03-05 2015-03-05 Explosionsgeschützte Kabelverschraubung

Publications (1)

Publication Number Publication Date
EP3065228A1 true EP3065228A1 (fr) 2016-09-07

Family

ID=55451095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16158088.1A Withdrawn EP3065228A1 (fr) 2015-03-05 2016-03-01 Dispositif de fixation de cable protege contre l'explosion

Country Status (2)

Country Link
EP (1) EP3065228A1 (fr)
DE (1) DE102015103230A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110323709A (zh) * 2019-06-12 2019-10-11 中国石油天然气股份有限公司 一种潜油电缆湿式连接方法及其装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054324A1 (de) * 2000-11-02 2002-05-08 Volkswagen Ag Steckverbindung
US20100108020A1 (en) * 2008-11-06 2010-05-06 Angelo Miretti Connector apparatus and system for explosion proof engine
DE102013203896A1 (de) * 2012-03-16 2013-09-19 Janesko Oy Steckverbinderstruktur
DE102013113013A1 (de) 2013-07-05 2015-01-08 Linde Material Handling Gmbh Kabeldurchführung, insbesondere für eine explosionsgeschützte mobile Arbeitsmaschine, sowie explosionsgeschützte mobile Arbeitsmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8816055U1 (fr) * 1988-12-24 1989-08-17 Dynamit Nobel Ag, 5210 Troisdorf, De
US5920035A (en) * 1997-03-12 1999-07-06 Atp International Ltd. High pressure seal
DE19755497C1 (de) * 1997-12-13 1999-07-08 Hella Kg Hueck & Co Steuergerätegehäuse aus Kunststoff für ein Kraftfahrzeug
DE10117976A1 (de) * 2001-01-25 2002-08-22 Siemens Ag Einrichtung zur Durchführung von elektrischen Leitungen durch die Wandung eines Kraftstoffbehälters
US6821145B1 (en) * 2003-07-16 2004-11-23 Special Hermetic Products, Inc. Hermetically sealed connector and methods of providing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054324A1 (de) * 2000-11-02 2002-05-08 Volkswagen Ag Steckverbindung
US20100108020A1 (en) * 2008-11-06 2010-05-06 Angelo Miretti Connector apparatus and system for explosion proof engine
DE102013203896A1 (de) * 2012-03-16 2013-09-19 Janesko Oy Steckverbinderstruktur
DE102013113013A1 (de) 2013-07-05 2015-01-08 Linde Material Handling Gmbh Kabeldurchführung, insbesondere für eine explosionsgeschützte mobile Arbeitsmaschine, sowie explosionsgeschützte mobile Arbeitsmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110323709A (zh) * 2019-06-12 2019-10-11 中国石油天然气股份有限公司 一种潜油电缆湿式连接方法及其装置
CN110323709B (zh) * 2019-06-12 2021-04-27 中国石油天然气股份有限公司 一种潜油电缆湿式连接方法及其装置

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Publication number Publication date
DE102015103230A1 (de) 2016-09-08

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