EP1300913B1 - Im Vakuum operierender Hochspannungsstromverbinder - Google Patents

Im Vakuum operierender Hochspannungsstromverbinder Download PDF

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Publication number
EP1300913B1
EP1300913B1 EP01402570A EP01402570A EP1300913B1 EP 1300913 B1 EP1300913 B1 EP 1300913B1 EP 01402570 A EP01402570 A EP 01402570A EP 01402570 A EP01402570 A EP 01402570A EP 1300913 B1 EP1300913 B1 EP 1300913B1
Authority
EP
European Patent Office
Prior art keywords
cables
insulating
casing
cable
sheath
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
EP01402570A
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English (en)
French (fr)
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EP1300913A1 (de
Inventor
Lample Regis
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.)
Direction General pour lArmement DGA
Etat Francais
Original Assignee
Direction General pour lArmement DGA
Etat Francais
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Publication date
Application filed by Direction General pour lArmement DGA, Etat Francais filed Critical Direction General pour lArmement DGA
Publication of EP1300913A1 publication Critical patent/EP1300913A1/de
Application granted granted Critical
Publication of EP1300913B1 publication Critical patent/EP1300913B1/de
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
    • H01R13/533—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
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Definitions

  • the technical field of the present invention is that of connectors for high voltage electric currents (several tens of thousands of volts).
  • US-A-4,060,299 discloses a connection device for coaxial electrical cables.
  • connectors exist to solve the problem of cable junction or bulkhead crossing by a high voltage cable. Examples of these materials are given by the catalogs of high voltage coaxial connectors, marketed by companies specialized in this field such as RADIALL, ALCATEL, STATE, LEYBOLD, PFEIFFER, VARIAN or VEECO. They are most often made by assemblies consisting of a plug and a socket (when moving from an isolated coaxial line to an isolated coaxial line) or a base and a socket (when switching from an isolated coaxial line to an uninsulated air line). One of the two connectors, or the base, is then fixed on the wall to be crossed and seals between the two sides of the wall by means of conventional seals.
  • the conventional plug connections because of the ratio between the diameters of the central conductor and the outer conductor, have high inductances which oppose the passage of a fast electrical pulse (for example the discharge of a capacity) through the connection. If it is still possible to operate by increasing the power of the current generator when operating with direct current, the problem becomes practically impossible to solve when one seeks to create a strong current by discharging in a very short time. 'a capacity.
  • the object of the present invention is therefore to overcome these disadvantages by providing a connection in which the dielectrics remain immersed in a gaseous atmosphere or in any other fluid, even when a portion of the connector is placed in the vacuum. It also achieves this connection by maintaining a coaxial geometry close to that of the cables and the ability to easily detach the two cables from the wall on which they are mounted.
  • the voltages that are capable of supporting the connectors that are the subject of the invention are not limiting, even in a very high vacuum, because the arrangement chosen for the invention makes it possible, with a greater or lesser increase in the length of the connector, to to adjust its resistance to breakdown by a simple increase in the length of the dielectric on which could spread the electric arc. It is interesting to note that this increase in length does not translate into a larger radial size, thus avoiding increasing the inductance of the connection.
  • the invention proposes a connector comprising a metal outer casing connected to the ground braids of the cables to be connected, a dielectric insulating envelope placed inside the metal casing and surrounding the core of the two cables and their sheaths. insulators, and for which there is created a sealed cavity between the insulating sheath of the ends of the cables to be connected and the dielectric insulating jacket; this cavity remains bathed in a gas (preferably air at atmospheric pressure which is introduced during assembly) or remains filled by a hydraulic fluid, even when the connector, or a part of this connector, is placed in a vacuum chamber.
  • a gas preferably air at atmospheric pressure which is introduced during assembly
  • the gas pressure or the presence of the fluid is preserved in said cavity by means of sealing means placed on one side on the end of one of the two cables and on the other between the dielectric of the cable sheath. considered and the end of the insulating envelope.
  • the tightness at the end of the cable must be carried out both on the core of the cable, to prevent leakage from inside the cable, and on its insulating sheath in order to create the desired sealed cavity.
  • the sealing may be performed only on one of the cables and at one end of the dielectric envelope; on the other hand, if the connector is intended to be placed entirely in a vacuum, it is necessary to provide a sealing on the ends of the two cables and at both ends of the insulating envelope.
  • the outer metal casing and the dielectric insulating jacket have a cylindrical shape for wrapping the ends of the cables with a minimum space requirement and therefore a minimum inductance, and to ensure good protection against electromagnetic radiation.
  • These envelopes may also consist of two tubes, one metal, the other dielectric, nested one inside the other and fixed to one another. This configuration has the particular advantage of allowing easy positioning of the cables inside the metal and insulating dielectric envelopes and to facilitate handling of the assembly.
  • the seal on the end of the cable can be achieved by means of a plug crimped on the cable and its insulating sheath. If necessary, a weld of the plug on the core is made to create the seal towards the inside of the core of the cable.
  • the sealing of the cavity at the end of the insulating envelope may preferably be carried out by the interposition of an O-ring between the dielectric of the insulating envelope and that of the insulating sheath of the cable to be connected.
  • This device has the advantage of enabling the connection of coaxial cables carrying high voltages (which can reach and even exceed 100 kV) and to use them in a very low pressure environment, and even in a very high vacuum (which can reach 10-7 mbar, this limit being dictated by the resistance of elastomeric dielectrics in vacuum and the associated surface degassing phenomenon), without any breakdown occurring at the junction of the dielectrics.
  • the device has the advantage, when used to achieve the crossing of a wall, to easily attach and detach the cables from the wall.
  • a through-body comprising a metal outer casing 1, placed around a dielectric insulating envelope 2, both in the presented case linked to the other by gluing, a sleeve 3 intended to receive the strong current plugs fixed to the ends of the core of the cables and a flange 4 fixed to the outer metal casing 1 and intended to ensure assembly of the assembly on a wall through.
  • FIG. 2 shows the complete partition penetration with all the elements already mentioned in FIG. 1, the left and right cables 6, two enclosures separated by the partition (the enclosure situated on the left being under vacuum in the FIG. ), and a sealing means 7 in the form of an O-ring.
  • Figure 3 details the end of a cable with its core 8, its insulating sheath 9, a strong current plug 10 fixed on the end of the cable by means of a crimping 11; it also details a particular embodiment of the fastening means of the metal casing 1 on the metal sheath 12 of the cable to be connected.
  • This mode comprises a sleeve 13 and a threaded sleeve 14, trapping the ground braid 16 forming the end of the metal sheath 12 of the cable 5, and a nut 15 for fixing this socket 14 to the metal casing 1.
  • the outer metal casing 1 of the bushing body has the function of creating the continuity of mass with the ground braids 16 of the cables to be connected; it thus ensures the electromagnetic protection of the connection with respect to external parasites and the protection of external systems with respect to currents flowing through it.
  • the dielectric insulating jacket 2 serves to move as far as necessary the end of the core of the cable ("the hot spot") of the nearest metal point, to avoid a breakdown between these two points; the length of this insulating envelope can be adjusted according to the level of tension that is sought to apply to the hot spot.
  • the presence of this insulating casing 2 also has the function of producing an inductance close to the line inductance of the cable.
  • junction sleeve 3 The function of the junction sleeve 3 is to allow easy connection of the two ends of the cables to be connected by simple plug-in, which ensures rapid assembly and disassembly of the cables on the bulkhead bushing.
  • the strong current plug 10 placed at the end of each of the two cables 5 and 6 serves to facilitate the junction with the sleeve 3 and to allow good quality contact to ensure the passage of the current.
  • the principle of the invention is to provide a cavity between the dielectric 9 and 2 and to make this cavity sealed by means of two sealing means 11 and 7.
  • the air or fluid trapped during assembly ensures a presence gaseous or liquid in this cavity which prevents the formation of an electric arc between the end of the cable and either the ground strap at the end of the cable or the wall, while in the absence of these sealing means the cavity would be subject to the surrounding void and breakdowns could occur.
  • a first seal of the cavity object of the invention is provided, on the cable end side, by crimping 11 of the plug 10 on the insulator 9 and on the core 8 of the cable; this crimping thus prevents the fluid contained in this cavity from escaping to the vacuum chamber via the inside of the core of the cable. If the current plug used is not itself waterproof it is necessary to achieve this seal by adding for example a weld on the strands of the core 8 and the plug 10.
  • a second seal is provided at the other end of the cavity by a sealing means 7 placed at the end of the dielectric insulating jacket 2: it ensures, in cooperation with the insulation 9 of the cable, the closure of the cavity and prevents leakage of the fluid contained in the cavity to the vacuum chamber.
  • the two envelopes are constituted by tubes, one in copper, the other in PVC, glued to one another to make more easy handling of the whole. Inside these tubes is inserted a socket (possibly glued) which allows the junction of the cables by simply plugging their ends.
  • a socket possibly glued
  • These two tubes are fixed on the wall to be crossed by means of a flange, itself glued to the copper tube, which by means of a thread, crushes a seal and thus ensures the maintenance of the seal between the two sides of the wall.
  • the cables used are provided at their end with a strong current plug, which is welded to the stranded core to ensure a seal with the inside of the cable, and which is crimped on the polyethylene insulating sheath.
  • the braid of the cable of the cable exposed by removal of its protective sheath, is tightened in a set, consisting of a sleeve fixed on the cable and a socket, in order to ensure the continuity of mass, this bushing carrying itself a nut for fixing on the copper tube.
  • This type of invention provides a significant improvement in the areas that use the high voltage connectors, such as imaging, the field of lasers, radiography and in any technical field that needs to transmit high voltage currents in the form of fast impulses.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (10)

  1. Vorrichtung zum Verbinden von koaxialen elektrischen Kabeln (5, 6), die aus einer Kabelseele (8) und einer Isolierhülle (9) bestehen, welche in einer Metallhülle (12) eingeschlossen sind, vom Typ mit einem Außenmantel (1) aus Metall, der eine Masse bildet und mit der Metallhülle des Kabel verbunden ist, und einem dielektrischen Isoliermantel (2), wobei beide um die Enden der zu verbindenden Kabeln angeordnet sind, dadurch gekennzeichnet, dass eine Vorrichtung Dichtmittel (7, 11) aufweist, die einerseits am Ende mindestens eines der zu verbindenden Kabel und an seiner Isolierhülle und andererseits an mindestens einem Ende des Isoliermantels (2) positioniert sind, um einen dichten Hohlraum zwischen dem Isoliermantel und der Isolierhülle des Kabels zu begrenzen.
  2. Vorrichtung nach Anspruch 1, bei welcher der Außenmantel (1) aus Metall und der dielektrische Isoliermantel (2) beide zylinderförmig, koaxial und entlang der Anschlussachse der Kabel angeordnet sind.
  3. Vorrichtung nach Anspruch 2, bei welcher der Außenmantel aus Metall und der dielektrische Isoliermantel aus einem Metallrohr bzw. einem dielektrischen Rohr bestehen, der koaxial und miteinander verbunden sind.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, bei welcher das am Ende eines der Kabel angeordnete Dichtmittel (11) durch Aufpressen eines Steckers an der Isolierhülle des Kabels gebildet ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, bei welcher das am Ende des Isoliermantels angeordnete Dichtmittel (7) ein O-Ring ist, der einerseits mit der Isolierhülle des Kabels und andererseits mit der die Verbindung umgebenden Isoliermantel in Kontakt steht.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, bei welcher die Enden der beiden zu verbindenden Kabel und die beiden Enden des von dem Mantel und den Isolierhüllen gebildeten Hohlraums mit den Dichtmitteln (7) und (11) versehen sind.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, bei welcher die Ansatzstücke der zu verbindenden Kabelseelen in eine Metallhülse (3) eingesteckt sind.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, die zwischen der Metallhülle mindestens eines der Kabel und dem Außenmantel aus Metall mit lösbaren Verbindungsmitteln versehen ist.
  9. Anwendung der Vorrichtung nach einem der Ansprüche 1 bis 8 bei der Verbindung von elektrischen Kabeln im Vakuum, dadurch gekennzeichnet, dass der dichte Hohlraum mit Luft bei atmosphärischen Druck gefüllt ist.
  10. Anwendung der Vorrichtung nach einem der Ansprüche 1 bis 8 bei der Verbindung von elektrischen Kabeln im Vakuum, dadurch gekennzeichnet, dass der dichte Hohlraum mit einer hydraulischen Flüssigkeit gefüllt ist.
EP01402570A 2000-10-05 2001-10-05 Im Vakuum operierender Hochspannungsstromverbinder Expired - Lifetime EP1300913B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0012701A FR2815187B1 (fr) 2000-10-05 2000-10-05 Connecteur pour courants hautes tensions fonctionnant dans le vide
FR0012701 2000-10-05

Publications (2)

Publication Number Publication Date
EP1300913A1 EP1300913A1 (de) 2003-04-09
EP1300913B1 true EP1300913B1 (de) 2007-01-31

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Family Applications (1)

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EP01402570A Expired - Lifetime EP1300913B1 (de) 2000-10-05 2001-10-05 Im Vakuum operierender Hochspannungsstromverbinder

Country Status (4)

Country Link
US (1) US6485331B1 (de)
EP (1) EP1300913B1 (de)
DE (1) DE60126411T2 (de)
FR (1) FR2815187B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9112300B2 (en) * 2009-04-20 2015-08-18 Asml Netherlands B.V. Electrical connector for lithographic projection apparatus
US8947638B2 (en) * 2010-12-03 2015-02-03 Asml Netherlands B.V. Actuation system and lithographic apparatus
WO2016189956A1 (ja) * 2015-05-26 2016-12-01 三菱電機株式会社 電気機器および電気機器の製造方法
DE102019127686A1 (de) * 2019-10-15 2021-04-15 Türk & Hillinger GmbH Durchführung für eine elektrische Heizvorrichtung, elektrische Heizvorrichtung mit einer solchen Durchführung, System mit einer solchen Durchführung und Verfahren zur Herstellung einer solchen Durchführung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806625A (en) * 1973-03-16 1974-04-23 Atomic Energy Commission High-voltage feedthrough assembly
US4060299A (en) * 1976-07-08 1977-11-29 Williams Robert A Electrical connector
FR2578690B1 (fr) * 1985-03-07 1987-04-17 Alsthom Atlantique Dispositif de connexion electrique unipolaire entre deux modules assembles mecaniquement bout a bout d'un groupe motopompe immerge
DE3640180A1 (de) * 1986-11-25 1988-06-09 Siemens Ag Hochspannungsfeste, vakuumdichte elektrische durchfuehrung fuer kryogene anwendungen sowie verfahren zu ihrer herstellung
JP3433433B2 (ja) * 1994-03-07 2003-08-04 矢崎総業株式会社 シールドコネクタ
JP3669525B2 (ja) * 1995-05-25 2005-07-06 矢崎総業株式会社 結露対策用防水コネクタ

Also Published As

Publication number Publication date
EP1300913A1 (de) 2003-04-09
DE60126411T2 (de) 2007-11-15
FR2815187A1 (fr) 2002-04-12
US6485331B1 (en) 2002-11-26
DE60126411D1 (de) 2007-03-22
FR2815187B1 (fr) 2002-12-13

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