EP1540773A1 - Couplage de cables coaxiaux - Google Patents

Couplage de cables coaxiaux

Info

Publication number
EP1540773A1
EP1540773A1 EP03794918A EP03794918A EP1540773A1 EP 1540773 A1 EP1540773 A1 EP 1540773A1 EP 03794918 A EP03794918 A EP 03794918A EP 03794918 A EP03794918 A EP 03794918A EP 1540773 A1 EP1540773 A1 EP 1540773A1
Authority
EP
European Patent Office
Prior art keywords
coupling
connection area
piece
coupling piece
connection
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
EP03794918A
Other languages
German (de)
English (en)
Other versions
EP1540773B1 (fr
Inventor
Gerhard Zuch
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.)
Areva GmbH
Original Assignee
Framatome ANP 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 Framatome ANP GmbH filed Critical Framatome ANP GmbH
Publication of EP1540773A1 publication Critical patent/EP1540773A1/fr
Application granted granted Critical
Publication of EP1540773B1 publication Critical patent/EP1540773B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
    • 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
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/44—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches comprising impedance matching means

Definitions

  • the invention relates to a coupling for coaxial cables according to the preamble of claim 1.
  • Such a coupling is known for example from EP 0 314 299 A1.
  • Couplings for coaxial cables with spring-loaded connecting elements are also known from the publications US 3, 416, 125, US 4, 012, 105 or US 6, 053, 777.
  • Such a coupling can be important in many industrial applications in which coaxial cables have to be quickly and easily disengaged and coupled together, for example during maintenance work.
  • a coupling can be used in the case of rigid coaxial conductors, such as those used in a nuclear facility or a nuclear power plant for the transmission of electrical signals or pulses.
  • TDR measuring principle time-domain reflectometry
  • the effect of the TDR measuring principle is that an electromagnetic pulse carried in an antenna system is partially reflected when the impedance changes abruptly between, for example, a central conductor of the antenna and a sheathed conductor surrounding it in the manner of a coaxial cable.
  • Such an abrupt change in impedance occurs, for example, where the antenna formed in this way is immersed in a liquid from a gaseous environment, since the impedance depends on the capacitance between the central conductor and the sheathed conductor and thus on the dielectric constant of the medium filling the space between the central conductor and the sheathed conductor depends.
  • One of such in that too depends on the conductor and sheathed conductor filling medium.
  • An electromagnetic pulse supplied to such an antenna, which is immersed in the medium to be monitored, is thus partially reflected on the surface of the medium. Another reflection occurs at the usually short-circuited antenna end.
  • the transit time difference between the pulse reflected at the boundary layer and the pulse reflected at the antenna end can be used as a measure of the position of the boundary layer and thus as a means of determining a characteristic of the position of the boundary layer Position characteristic value can be used, whereby an essentially proportional dependency between the term difference and position characteristic value can be used.
  • rigid coaxial conductors can be used to transmit the electromagnetic pulses between the containment wall and the reactor pressure vessel, in particular in order to ensure the high signal quality required for reliable measurement value acquisition.
  • a coupling device which allows segments of the Coupling the coaxial conductor between the two bushings mentioned quickly and easily.
  • the coupling In order to keep the interference and damping of the electromagnetic pulse in such a system as low as possible at the coupling point, the coupling should meet high requirements.
  • the impedances should be kept constant over the length of the conductor or at least not change discontinuously, so that disturbing reflections on impedance jumps are avoided as best as possible.
  • High-quality electrical contact between conductors connected by the coupling is particularly important for reliable transmission of the electromagnetic pulse.
  • the invention is therefore based on the object of specifying a coupling of the type mentioned above which is both simple and quick to use and which ensures the electrical contact between the coupled coaxial conductors with high reliability.
  • connection head facing the connection area of the second coupling piece is provided with contact fingers which fit into recesses provided for this purpose in the connection area of the second coupling piece, the connection area of the second coupling piece being provided with a contact piece which is suitable for the or each contact finger has an associated connection surface.
  • the invention is based on the consideration that a coupling mechanism for coaxial cables should be easy to operate, that is to say that the cables should be able to be coupled and uncoupled quickly and easily.
  • the electrical contact between the coaxial conductors connected via the coupling should also be particularly intensive during the operation of the system.
  • the coupling is provided with a device which particularly strengthens the contact between the conductors to be coupled.
  • the targeted use of the restoring force of a spring element is provided, the spring being loaded when the two coaxial conductors are coupled together therefore constantly exerts a force favoring the electrical contact on both conductors.
  • connection head In order to be able to guarantee a particularly intimate contact between the connection head and the connection area of the first coupling piece, the connection head is slidably mounted on the connection area of the first coupling piece.
  • the connection head is expediently positioned when the coupling is open in such a way that when the coupling is assembled, the connection area of the first coupling piece moves the connection head toward the connection area of the second coupling piece and thereby tensions the spring element.
  • the resulting restoring force of the spring element consequently leads to a permanent pressing of the connecting head against the first coupling piece and thus to a particularly reliable electrical connection.
  • the contact fingers both center the connection head with respect to the longitudinal axis of the coupling and produce the electrical contact between the connection head and the connection area. Due to the interaction of the contact fingers with the associated recesses and in particular with contact surfaces arranged in them, sufficient contact with the connection area carrying it is ensured at all times even when the connecting head is displaced in the longitudinal direction.
  • the contact fingers of the connection head enclose a contact piece attached to the connection area of the second coupling piece, which serves to ensure the electrical contact between the connection head and the connection area.
  • the contact fingers rest on a larger or smaller surface of the contact piece.
  • the contact piece therefore also has the task of reliably maintaining the electrical contact between the connecting head and the connection area of the second coupling piece, even with a varying length of the spring.
  • the connecting head fits into a recess made in the connection area of the first coupling piece such that it thereby centers itself with respect to the longitudinal axis of the coupling.
  • the shape of the connecting head can in particular be convex and a corresponding concave Insert the recess in the connection area of the first coupling piece, both the connecting head and the recess being rotationally symmetrical about the longitudinal axis of the coupling. This ensures that the connecting head attaches particularly easily to the second coupling piece and that the central axes of both coupling pieces cannot move against each other when coupling together, which can lead to undesirable disturbances in the electromagnetic pulse and can also make it impossible to connect the sheathed conductors to one another.
  • a conical recess in the connection area of the first coupling piece is particularly advantageous, with which a connecting head shaped in the manner of a truncated cone corresponds.
  • a retaining screw is anchored to the connection area of the second coupling piece, holds the connection head at the connection area and prevents the connection head from being completely loosened when the coupling is open.
  • the jacket conductor of each coupling piece is expediently equipped with a mounting flange which allows the coupling pieces to be connected to one another.
  • a circumferential seal is attached between the mounting flanges, which enables a tight closure of the coupling.
  • the secure connection of the two coupling pieces is expediently carried out via a closure element, which allows the two coupling pieces to be held firmly together.
  • a closure element is adapted in shape and contour to that of the mounting flanges and encloses the mounting flanges in the connected state.
  • the closure element is advantageously a clamping ring with a spring clip, which enables particularly simple and quick operation of the coupling.
  • an undesired damping of the electromagnetic pulse can be excluded or at least kept low by the fact that the impedances do not change or change only slightly over the length of the coupling point.
  • the corresponding components, in particular the connection areas and the sheathed conductors surrounding them, are advantageously suitably dimensioned.
  • the advantages achieved by the invention are, in particular, that the use of a spring element in the production of an electrical connection between the central conductors of the coaxial cables provides a particularly simple and quick-to-use coupling, which also ensures that the electrical connection between the coaxial conductors is particularly good is high quality. This enables the coupling to be used even for sensitive measurements that require high signal quality.
  • the coupling is therefore particularly suitable for use on signals for coaxial conductors transmitting TDR measurements in nuclear power plants.
  • FIG. 1 schematically shows a system for monitoring the fill level in a closed reactor pressure vessel
  • FIG. 4 shows in cross section the same sheathed conductor of the coaxial cable with a closure element and a seal.
  • the system 1 according to FIG. 1 is provided for monitoring a medium M within the connected reactor pressure vessel 2 of a nuclear facility.
  • the reactor pressure vessel 2 is arranged inside a containment 4 which is designed to be closed and is only indicated in FIG. 1.
  • the reactor pressure vessel 2 is connected via a signal line 6 is led through a containment 8 through the containment 4, connected to a communication interface 10 of the system 1.
  • water W is held as medium M in the exemplary embodiment of the reactor pressure vessel 2, which serves as the primary coolant of the nuclear plant.
  • the water w is unmixed in the so-called supercooled state.
  • the medium M held in the container 2 thus has a first boundary layer 12 between water W and the phase mixture W, D and a second boundary layer 14 between the phase mixture W, D and the vapor D.
  • a large number of operating parameters are provided for monitoring the operation of the nuclear plant. Among other things, it may be desirable or necessary to monitor the position of the boundary layers 12, 14. For example, the position of the boundary layer 14 can take place via a fill level measurement.
  • the system 1 is provided for the prompt determination and monitoring of positional characteristic values of the boundary layers 12, 14.
  • system 1 is designed to use the so-called TDR measurement principle (time-domain reflectometry).
  • TDR measurement principle time-domain reflectometry
  • a substantially vertical coaxial cable 16 serving as an antenna is provided within the reactor pressure vessel 2.
  • the coaxial cable 16 is led out of the reactor pressure vessel via an electrical feedthrough 18 and connected to the signal line 6.
  • the communication interface 10 connected to the signal line 6 is in turn connected to a pulse generator 20 that generates the electromagnetic pulses and to an evaluation and control unit 22 with an output module 24 and a memory module 26.
  • the evaluation and control unit 22 is also connected to other components required for proper operation, such as an input device.
  • System 1 is specifically geared towards the use of the TDR measuring principle.
  • a particularly high-quality signal transport in the lines provided for this purpose, in particular the signal line 6, is desired.
  • the signal line 6 is in turn designed as a rigid coaxial cable.
  • the signal line 6 is composed of a plurality of coaxial cables 30, 32 which are detachably connected to one another via a coupling 33.
  • the clutch 33 is also specifically designed for this design goal.
  • the coupling 33 produces a particularly intimate electrical contact between the central conductors 34 and 35 of the coaxial cables 30, 32 to be connected, while being easy to operate overall.
  • the coaxial cable 30 and the coaxial cable 32 have a sheathed conductor 36 or 37 and a central conductor 34 or 35.
  • the coupling 33 provided for connecting the coaxial cables 30, 32 to one another accordingly consists of a first coupling piece 38 and a second coupling piece 39, the coaxial cable 30 being firmly connected to the first coupling piece 38 and the coaxial cable 32 being firmly connected to the second coupling piece 39.
  • the first coupling piece 38 comprises a connection area 40 which is connected to the central conductor 34.
  • the second coupling piece 39 also comprises a connection area 41, which is connected accordingly to the central conductor 35 of the second coupling piece 39.
  • connection area 41 is equipped with a connection head 42 which can be brought into contact with the connection area 40 and which is resiliently removed from the actual connection area 41 via a spring element 43. is supported.
  • the spring of the spring element 43 is tensioned when the coupling 33 is closed and, due to its restoring force, constantly presses the connecting head 42 against a corresponding contact surface of the connection area 40 of the first coupling piece 38 and thus ensures a particularly reliable electrical connection.
  • Suitable springs are, for example, spiral springs, disc springs, leaf springs or coil springs as in the exemplary embodiment.
  • connection head 42 is equipped with, for example, a convex tip 44, which in the exemplary embodiment is shaped like a truncated cone, and which fits into a provided, for example inserts concave recess 45 in the connection area 40.
  • the recess 45 is conical in the exemplary embodiment and thus its contouring is adapted to the tip 44 of the connecting head 42.
  • connection head 42 is held on the connection area 41 by a retaining screw 50. As a result, a complete loosening of the connecting head 42 is reliably avoided, even when the clutch 33 is open.
  • FIG. 3 shows a cross section through the jacket conductors 36 and 37 of the coupling pieces 38 and 39 with a closure element 54 enclosing the flanges 52 and thereby connecting the coupling pieces 38 and 39, for example a clamping ring, which is held together by a spring clip (not shown).
  • FIG. 4 likewise shows a cross section through the jacket conductors 28 of the coupling pieces 38 and 39 with a closure element 54 which surrounds the mounting flanges 52 and thereby connects the coupling pieces 38 and 39 and which is equipped with a circumferential seal 56.
  • the seal 56 allows a particularly tight and secure closure of the coupling 33 by the closure element 54.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Multi-Conductor Connections (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cable Accessories (AREA)

Abstract

L'invention concerne un couplage (33) destiné à la connexion de deux câbles coaxiaux (30, 32) comportant respectivement un conducteur central (34, 35) entouré par un conducteur d'enveloppe (36, 37), un élément de couplage (38, 39) étant respectivement affecté à chaque câble coaxial (30, 32). L'invention vise à mettre en oeuvre un tel couplage d'utilisation simple et rapide, permettant également d'assurer un contact électrique fiable entre les câbles coaxiaux couplés. A cet effet, chaque élément de couplage (38, 39) présente respectivement une zone de connexion (40, 41) reliée électriquement au conducteur central (34, 35) du câble coaxial correspondant (30, 32). Par ailleurs, une tête de connexion (42) du deuxième élément de couplage (39), destinée à créer un contact électrique avec la zone de connexion (40) du premier élément de couplage (38), s'appuie sur un élément élastique (43) dans la zone de connexion dudit deuxième élément de couplage (39).
EP03794918A 2002-08-29 2003-08-22 Couplage de cables coaxiaux Expired - Lifetime EP1540773B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10240563A DE10240563B4 (de) 2002-08-29 2002-08-29 Kupplung für Koaxialkabel
DE10240563 2002-08-29
PCT/EP2003/009316 WO2004025786A1 (fr) 2002-08-29 2003-08-22 Couplage de câbles coaxiaux

Publications (2)

Publication Number Publication Date
EP1540773A1 true EP1540773A1 (fr) 2005-06-15
EP1540773B1 EP1540773B1 (fr) 2006-02-15

Family

ID=31502312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03794918A Expired - Lifetime EP1540773B1 (fr) 2002-08-29 2003-08-22 Couplage de cables coaxiaux

Country Status (13)

Country Link
US (1) US7131866B2 (fr)
EP (1) EP1540773B1 (fr)
JP (1) JP4348296B2 (fr)
CN (1) CN100352105C (fr)
AU (1) AU2003264090A1 (fr)
BR (1) BR0313872A (fr)
CA (1) CA2496845C (fr)
CZ (1) CZ301400B6 (fr)
DE (2) DE10240563B4 (fr)
ES (1) ES2258237T3 (fr)
UA (1) UA79809C2 (fr)
WO (1) WO2004025786A1 (fr)
ZA (1) ZA200500722B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7922529B1 (en) * 2009-11-23 2011-04-12 Neocoil, Llc High mating cycle low insertion force coaxial connector
US8178813B2 (en) * 2010-02-02 2012-05-15 Beijing Orient Vacuum Electric Co., Ltd. Vacuum switch tube
JP5523416B2 (ja) * 2011-09-07 2014-06-18 茂治郎 清水 通電用コネクター
CN105048172A (zh) * 2015-06-30 2015-11-11 张家港金海港电线电缆有限公司 一种快速电缆连接装置
CN105140739A (zh) * 2015-06-30 2015-12-09 张家港金海港电线电缆有限公司 一种电缆快速连接装置
CN106428092B (zh) * 2016-11-01 2018-12-04 崔建国 机车后视自动转换电连接器的应用系统
CN106532288A (zh) * 2016-12-04 2017-03-22 重庆永富电线电缆有限公司 一种电缆连接器
CN109690876A (zh) * 2017-05-26 2019-04-26 深圳市大富科技股份有限公司 一种电连接装置及电动汽车
US11658435B2 (en) * 2021-08-27 2023-05-23 T-Conn Precision Corporation Electrical connector for charging

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US3416125A (en) * 1966-10-20 1968-12-10 Ostby & Barton Co Co-axial connector
DE2301798C3 (de) * 1973-01-15 1975-07-24 Karl-Robert 2320 Ploen Gisewsky Vorrichtung zum lösbaren Verbinden elektrischer Leitungsadern
US4012105A (en) * 1974-09-30 1977-03-15 Bell Industries, Inc. Coaxial electrical connector
JPS528193U (fr) * 1975-07-05 1977-01-20
US4229061A (en) * 1979-04-30 1980-10-21 Majors James P Electrical adapter or connector
JPS618980U (ja) * 1984-06-21 1986-01-20 日本電気株式会社 はめ合せられる一組の同軸コネクタ
JPH0129992Y2 (fr) * 1984-12-11 1989-09-12
US5021001A (en) * 1987-01-29 1991-06-04 Lucas Weinschel Inc. Multiple use electrical connector having planar exposed surface
JPH0345422Y2 (fr) * 1987-09-16 1991-09-25
NL8702537A (nl) * 1987-10-26 1989-05-16 At & T & Philips Telecomm Coaxiale connector.
JPH0299582U (fr) * 1989-01-26 1990-08-08
JP3003199U (ja) * 1994-01-21 1994-10-18 二幸電気工業株式会社 Ｆ型コネクタ
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JPH10233265A (ja) * 1997-02-17 1998-09-02 Nikou Denki Kogyo Kk 同軸ケーブル接続用コネクタ
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Also Published As

Publication number Publication date
WO2004025786A1 (fr) 2004-03-25
EP1540773B1 (fr) 2006-02-15
CN1679211A (zh) 2005-10-05
CA2496845C (fr) 2009-12-29
ES2258237T3 (es) 2006-08-16
JP2005537629A (ja) 2005-12-08
CZ2005117A3 (cs) 2006-01-11
BR0313872A (pt) 2005-07-19
CA2496845A1 (fr) 2004-03-25
ZA200500722B (en) 2005-10-26
DE10240563A1 (de) 2004-03-11
JP4348296B2 (ja) 2009-10-21
CN100352105C (zh) 2007-11-28
US20050260878A1 (en) 2005-11-24
DE10240563B4 (de) 2004-08-05
UA79809C2 (uk) 2007-07-25
DE50302442D1 (de) 2006-04-20
AU2003264090A1 (en) 2004-04-30
CZ301400B6 (cs) 2010-02-17
US7131866B2 (en) 2006-11-07

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