EP3336971A1 - Connecteur pour joint de câbles de puissance - Google Patents

Connecteur pour joint de câbles de puissance Download PDF

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Publication number
EP3336971A1
EP3336971A1 EP16204393.9A EP16204393A EP3336971A1 EP 3336971 A1 EP3336971 A1 EP 3336971A1 EP 16204393 A EP16204393 A EP 16204393A EP 3336971 A1 EP3336971 A1 EP 3336971A1
Authority
EP
European Patent Office
Prior art keywords
connector
contact
fixation
power cable
contact structure
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Withdrawn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
EP16204393.9A
Other languages
German (de)
English (en)
Inventor
Josip BATKOVIC
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.)
NKT HV Cables GmbH
Original Assignee
NKT HV Cables 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 NKT HV Cables GmbH filed Critical NKT HV Cables GmbH
Priority to EP16204393.9A priority Critical patent/EP3336971A1/fr
Publication of EP3336971A1 publication Critical patent/EP3336971A1/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Withdrawn legal-status Critical Current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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • 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
    • H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/621—Bolt, set screw or screw clamp

Definitions

  • the present disclosure generally relates to power cables and in particular to a connector for jointing a power cable.
  • Joint devices are typically used for connecting two cable ends in an extruded cable system.
  • Such cables typically comprise a conductor and an insulation system surrounding the conductor.
  • the insulation system may include inner and outer semiconducting layers for screening, and an intermediate electrical insulation layer arranged between the semiconducting layers.
  • a prefabricated joint is mounted onto the insulation system of the cable.
  • a prefabricated joint may include a field control body which includes at least one semiconducting layer and an electrical insulation layer which control the electric field, and a connector that completes the metallic link between the two cable conductors for current transfer.
  • the connector may use a clamping/bolting technique to connect the conductor ends.
  • the current transfer in the conventional connector is designed to transfer the current in a radial direction.
  • the connector has a contact body provided with openings for receiving conductors, and two contact elements, each being arranged between a respective conductor end and the contact body.
  • the connector also has two clamping bodies, configured to be attached to the contact body by means of threads.
  • an object of the present disclosure is to provide a connector for jointing a power cable which solves, or at least mitigates, the problems of the prior art.
  • a connector for jointing a first power cable section and a second power cable section comprising: a first contact body having a first end provided with a central opening configured to receive a first conductor end of a first power cable section, and a second end opposite to the first end, provided with a male contact structure, a second contact body having a first end provided with a central opening configured to receive a first conductor end of a second power cable section, and a second end, opposite to the first end of the second contact body, provided with a female contact structure configured to engage with the male contact structure, and a radially elastic contact member configured to be arranged radially between the male contact structure and the female contact structure to provide radial mechanical and electrical contact between the male contact structure and the female contact structure.
  • the connector hence provides a mechanical and electrical connection between two power cable sections by a mating male-female contact structure.
  • the first contact body and the second contact body may thus in a simple manner be connected to each other, without needing rotation between the parts.
  • the radially elastic contact member ensures good mechanical and thus good electrical contact between the male contact structure and the female contact structure, maintaining a stable electrical and mechanical contact dynamically, i.e. as the male contact structure and female contact structure expand and contract due to thermal radial and axial expansion and contraction.
  • the elastic contact member is configured to be electrically conducting, and may for example comprise a metal.
  • the metal may for example include at least one of copper, aluminium, silver and gold.
  • the elastic contact member has an annular shape.
  • the elastic contact member has a first axial end provided with a plurality of first legs distributed circumferentially around the first axial end, and a second axial end provided with a plurality of second legs distributed circumferentially around the second axial end.
  • the elastic contact member has a plurality of radially flexible elements extending between the first axial end and the second axial end.
  • one of the male contact structure and the female contact structure is provided with a first circumferential groove configured to receive the plurality of first legs of the elastic contact member and a second circumferential groove axially offset relative to the first circumferential groove configured to receive the plurality of second legs, to maintain the axial position of the elastic contact member.
  • the male contact structure comprises a plurality of concentrically arranged axially extending annular first protrusions and a central rod.
  • the male contact structure comprises one axially extending annular first protrusion and a central rod
  • the female contact structure comprises one axially extending annular second protrusion and a central opening, configured to mate with the annular first protrusion and the central rod of the male contact structure
  • the female contact structure comprises a plurality of concentrically arranged annular second protrusions extending axially and a central opening, configured to mate with the concentrically arranged annular first protrusions and the central rod of the male contact structure.
  • the elastic contact member is configured to be arranged radially between an annular first protrusion and an annular second protrusion.
  • One embodiment comprises a plurality of elastic contact members, each elastic contact member being configured to be arranged radially between a pair of engaging annular first protrusion and annular second protrusion. Better mechanical and electrical contact may thus be ensured between each pair of concentrically arranged annular first protrusion and annular second protrusion.
  • One embodiment comprises a first fixation body configured to be arranged adjacent to the first end of the first contact body, the first fixation body being configured to be fixed to the first contact body, and the first fixation body having a plurality of radially extending through-openings for fastening the first fixation body to the first conductor end of the first power cable section.
  • One embodiment comprises a plurality of elongated fasteners configured to extend axially between the first contact body and the first fixation body to thereby fasten the first fixation body to the first contact body.
  • One embodiment comprises a second fixation body configured to be arranged adjacent to the first end of the second contact body, the second fixation body being configured to be fixed to the second contact body, and the second fixation body having a plurality of radially extending through-openings for fastening the second fixation body to the first conductor end of the second power cable section.
  • One embodiment comprises a plurality of elongated fasteners configured to extend axially between the second contact body and the second fixation body to thereby fasten the second fixation body to the second contact body.
  • One embodiment comprises a plurality of electrically conducting fixation plates, each fixation plate being configured to extend from the first fixation body to the second fixation body, and each fixation plate having radial through-openings configured to be aligned with the radially extending through-openings of the first fixation body and the second fixation body, for fastening the fixation plates to the first fixation body and to the second fixation body.
  • a power cable comprising a first power cable section, a second power cable section, and a connector according to the first aspect presented herein, jointing the first power cable section and the second power cable section, and a field control body enclosing the connector.
  • the present disclosure relates to a connector for jointing a first power cable section and a second power cable section.
  • the connector may be used for low voltage, medium voltage or high voltage applications.
  • the connector may also be advantageous for use with conductors comprising a plurality of individually insulated strands, for example enamelled conductors.
  • the connector comprises a first contact body having a first end provided with an opening configured to receive a first conductor end of a first power cable section and a second end opposite to the first end, provided with a male contact structure.
  • the connector also comprises a second contact body having a first end provided with an opening configured to receive a second conductor end of a second power cable section, and a second end opposite to the first end of the second contact body, provided with a female contact structure.
  • the male contact structure, or male connector structure is configured to mate with the female contact structure, or female connector structure.
  • the first conductor end of the first power cable section may for example be an enamelled stranded conductor end and the first conductor end of the second power cable section may for example be an enamelled stranded conductor.
  • the conductor ends could alternatively have other configurations; they may for example be solid, segmented or compacted conductor ends.
  • the connector furthermore comprises a radially elastic contact member configured to be arranged radially between the male contact structure and the female contact structure.
  • the elastic contact member is configured to provide mechanical and electrical contact between the male contact structure and the female contact structure.
  • the male contact structure and the female contact structure there may be a single elastic contact member provided or a plurality of elastic contact members provided.
  • FIG. 1 An example of a connector for jointing a first power cable with a second power cable, thereby forming a single power cable is shown in Fig. 1 .
  • Fig. 1 shows an example of a connector 1 for jointing a first power cable section 3a and a second power cable section 3b, to thereby form a single jointed power cable.
  • the connector 1 comprises a first contact body 5, a second contact body 7, and a plurality of radially elastic contact members 9a-9d.
  • the first contact body 5 has a first end 5a provided with an opening 5b configured to receive a first conductor end 11a of the first power cable section 3a.
  • the first contact body 5 furthermore has a second end 5c provided with a male contact structure 5d.
  • the second contact body 7 has a first end 7a provided with an opening 7b configured to receive a first conductor end 11b of the second power cable section 3b.
  • the second contact body 7 furthermore has a second end 7c provided with a female contact structure 7d.
  • the male contact structure 5d and the female contact structure 7d are configured to mate, or engage with each other.
  • Fig. 2 shows a perspective view of one half of the connector 1 depicted in Fig. 1 , namely the first contact body 5 with the male contact structure 5, with additional parts forming part of the connector shown in Fig. 3 .
  • the male contact structure 5d is provided with a plurality of concentrically arranged axially extending annular first protrusions 5e and a central rod 5f.
  • the female contact structure 7 is provided with a plurality of concentrically arranged axially extending annular second protrusions 7e, and a central opening 7f, as shown in the longitudinal section in Fig. 1 .
  • the annular first protrusions 5e and the annular second protrusions 7e are configured to mate, and the central rod 5f is configured to mate with the central opening 7f.
  • both the male contact body 5 and the female contact body 7 have axially extending annular first protrusions 5e and annular second protrusions 7e, respectively, because contact structure 5 has an axially extending central rod 5f, configured to be received by a central opening 7f of the contact structure 7, contact structure 5d is herein referred to as male contact structure 5d and contact structure 7d is referred to as female contact structure 7d.
  • the connector 1 further comprises a first fixation body 13 configured to be arranged adjacent to the first end 5a of the first contact body 5, and configured to be attached thereto.
  • the first fixation body 13 comprises a plurality of axially extending openings 13a.
  • the first contact body 5 also has axially extending openings 5g configured to be aligned with the axially extending openings 13a of the first fixation body 13.
  • the connector 1 may furthermore comprise a plurality of elongated fasteners 15 configured to be received by a respective pair of axially aligned openings 13a and 5g, to thereby attach the first contact body 5 to the first fixation body 13.
  • the fasteners 15 may for example be screws or bolts.
  • the first fixation body 13 and the first contact body 5 may be moved relative to each other in the axial direction, thereby compensating for thermal effects when current flows through the connector 1. This ensures better axial mechanical and thus electrical contact between the first conductor end 11a and the first contact body 5.
  • the first fixation body 13 is configured to be mounted around the first conductor end 11a of the first power cable section 3a.
  • the first fixation body 13 is provided with a plurality of radial through-openings 13b to thereby fasten the first fixation body 13 to the first conductor end 11a of the first power cable section 3a by means of fasteners such as screws.
  • both sides of the connector 1 is shown in a longitudinal section, provided with the first fixation body 13, and comprising a second fixation body 17.
  • the second fixation body 17 is configured to be arranged adjacent to the first end 7a of the second contact body 7, and configured to be attached thereto.
  • the second fixation body 17 comprises a plurality of axially extending openings 17a.
  • the second contact body 7 also has axially extending openings 7g configured to be aligned with the axially extending openings 17a of the second fixation body 17.
  • the connector 1 may furthermore comprise a plurality of elongated fasteners 16 configured to be received by a respective pair of axially aligned openings 17a and 7g, to thereby attach the second contact body 7 to the second fixation body 17.
  • the fasteners 16 may for example be screws or bolts.
  • the second fixation body 17 and the second contact body 7 may be moved relative to each other in the axial direction, thereby compensating for thermal effects when current flows through the connector 1. This ensures better axial mechanical and thus electrical contact between the second conductor end 11b and the second contact body 7.
  • the second fixation body 17 is configured to be mounted around the first conductor end 11b of the second power cable section 3b.
  • the second fixation body 17 is provided with a plurality of radial through-openings 17b to thereby fasten the second fixation body 17 to the first conductor end 11b of the second power cable section 3b by means of fasteners such as screws.
  • Fig. 4 shows an example of an elastic contact member 9a-9d.
  • Elastic contact member 9 shown in Fig. 4 has an annular shape.
  • Elastic contact member 9 has a first axial end 19a and a second axial end 19b.
  • the first axial end 19a is provided with a plurality of first legs 19c distributed circumferentially, i.e. in the circumferential direction around the first axial end 19a.
  • the first legs 19c may be inclined radially inwards.
  • the second axial end 19b is provided with a plurality of second legs 19d distributed circumferentially, i.e. in the circumferential direction around the second axial end 19b of the elastic contact member 9.
  • the second legs 19d may be inclined radially inwards.
  • the elastic contact members 9, 9a-9d are configured to be arranged radially in between the male contact structure 5d and the female contact structure 7d.
  • the first legs 19c and the second legs 19d of each elastic contact member 9, 9a-9d is configured to engage with corresponding recesses in one of the male contact structure 5d and the female contact structure 7d to thereby fixate the elastic contact members 9, 9a-9d axially.
  • one of the male contact structure 5d and the female contact structure 7d may be provided with a first circumferential groove configured to receive the first legs 19c and a second circumferential groove arranged axially offset from the first circumferential groove and configured to receive the second legs 19d.
  • the annular first protrusions 5e or the annular second protrusions 7e may be provided with the recesses/first and second circumferential grooves.
  • the elastic contact member 9 furthermore comprises a plurality of radially flexible elements 19e extending between the first axial end 19a and the second axial end 19b.
  • the plurality of radially flexible structures 19e are configured to mechanically contact the male contact structure 5d and the female contact structure 7d to thereby provide electrical contact in the radial direction between the male contact structure 5d and the female contact structure 7d.
  • Fig. 5 shows the connector 1 and the first power cable section 3a and the second power cable section 3b connected to the connector 1.
  • the connector 1 may furthermore comprise a plurality of electrically conducting fixation plates 21.
  • Each fixation plate 21 is configured to extend between the first fixation body 13 and the second fixation body 17, and thus also across the first contact body 5 to the second contact body 7.
  • the fixation plates 21 have a plurality of radial through-openings 21a, 21b, of which some through-openings 21a are configured to be aligned with the radial through-openings 13b of the first fixation body 13 and other through-openings 21b are configured to be aligned with the radial through-openings 17b of the second fixation body 17.
  • These through-openings 21a, 21b are configured to receive fasteners, such as screws, extending also through the radially inwards arranged through-openings 13b and 17b, thereby fastening the first fixation body 13 and the second fixation body 17 as well as the fixation plates 21 to the first conductor section 11a and the second conductor section 11b. Since the fixation plates extend across the mechanical interface between the first contact body 5 and the second contact body 7, the two contact bodies 5 and 7 will be maintained axially fixed relative to each other. The fixation plates 21 thus maintain the male contact structure 5d and the female contact structure 7d in their mated or engaged state.
  • fasteners such as screws
  • the fixation plates 21 are not mechanically fixed directly to the first contact body 5 and to the second contact body 7, thus allowing the first contact body 5 and the second contact body 7 to move axially relative to the fixation plates 21 to allow thermal expansion and contraction of these parts.
  • the power cable thus obtained may comprise a field control body enclosing the connector 1, arranged radially outside the connector 1.
  • Each of the components of the connector 1 disclosed herein may be made of an electrically conductive material, typically metal.
  • the contact bodies 5 and 7, and the fixation bodies 13 and 17 may for example be made of steel, copper or aluminium, or any other suitable good electrically conducting material with high mechanical withstand strength.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP16204393.9A 2016-12-15 2016-12-15 Connecteur pour joint de câbles de puissance Withdrawn EP3336971A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16204393.9A EP3336971A1 (fr) 2016-12-15 2016-12-15 Connecteur pour joint de câbles de puissance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16204393.9A EP3336971A1 (fr) 2016-12-15 2016-12-15 Connecteur pour joint de câbles de puissance

Publications (1)

Publication Number Publication Date
EP3336971A1 true EP3336971A1 (fr) 2018-06-20

Family

ID=57570302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16204393.9A Withdrawn EP3336971A1 (fr) 2016-12-15 2016-12-15 Connecteur pour joint de câbles de puissance

Country Status (1)

Country Link
EP (1) EP3336971A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4557529A1 (fr) * 2023-11-20 2025-05-21 Toyota Jidosha Kabushiki Kaisha Structure de connexion de borne

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377547A (en) * 1982-01-18 1983-03-22 Minnesota Mining And Manufacturing Company Molded high voltage splice body
US4957449A (en) * 1988-11-18 1990-09-18 Yazaki Corporation Connector housing unit having threaded fastener
US5015195A (en) * 1990-03-13 1991-05-14 Thomas & Betts Corporation Plug and socket electrical connection assembly
US5176542A (en) * 1991-01-17 1993-01-05 Souriau & Cie Electrical connector for passing very high currents
US20130217257A1 (en) * 2012-02-17 2013-08-22 John Bogart Portable power connector
DE102014105817A1 (de) 2014-04-24 2015-10-29 Strescon Gmbh Kabelendgarnitur
US20160226158A1 (en) * 2013-09-16 2016-08-04 Prysmian S.P.A. Assembly and method for electrical splice connection of cables
WO2016149952A1 (fr) * 2015-03-26 2016-09-29 常熟市福莱德连接器科技有限公司 Connecteur photovoltaïque

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377547A (en) * 1982-01-18 1983-03-22 Minnesota Mining And Manufacturing Company Molded high voltage splice body
US4957449A (en) * 1988-11-18 1990-09-18 Yazaki Corporation Connector housing unit having threaded fastener
US5015195A (en) * 1990-03-13 1991-05-14 Thomas & Betts Corporation Plug and socket electrical connection assembly
US5176542A (en) * 1991-01-17 1993-01-05 Souriau & Cie Electrical connector for passing very high currents
US20130217257A1 (en) * 2012-02-17 2013-08-22 John Bogart Portable power connector
US20160226158A1 (en) * 2013-09-16 2016-08-04 Prysmian S.P.A. Assembly and method for electrical splice connection of cables
DE102014105817A1 (de) 2014-04-24 2015-10-29 Strescon Gmbh Kabelendgarnitur
WO2016149952A1 (fr) * 2015-03-26 2016-09-29 常熟市福莱德连接器科技有限公司 Connecteur photovoltaïque

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4557529A1 (fr) * 2023-11-20 2025-05-21 Toyota Jidosha Kabushiki Kaisha Structure de connexion de borne

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