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EP1465285B1 - Ligne coaxiale avec refroidissement forcé - Google Patents

Ligne coaxiale avec refroidissement forcé Download PDF

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Publication number
EP1465285B1
EP1465285B1 EP04007218A EP04007218A EP1465285B1 EP 1465285 B1 EP1465285 B1 EP 1465285B1 EP 04007218 A EP04007218 A EP 04007218A EP 04007218 A EP04007218 A EP 04007218A EP 1465285 B1 EP1465285 B1 EP 1465285B1
Authority
EP
European Patent Office
Prior art keywords
coaxial line
inner conductor
line according
tube
insulation material
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
EP04007218A
Other languages
German (de)
English (en)
Other versions
EP1465285A1 (fr
Inventor
Franz Dr. Ing. Pitschi
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.)
Spinner GmbH
Original Assignee
Spinner GmbH
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Filing date
Publication date
Application filed by Spinner GmbH filed Critical Spinner GmbH
Publication of EP1465285A1 publication Critical patent/EP1465285A1/fr
Application granted granted Critical
Publication of EP1465285B1 publication Critical patent/EP1465285B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/06—Coaxial lines

Definitions

  • the invention relates to a coaxial line according to the preamble of claim 1.
  • a coaxial line is known from DE 101 08 843 A known.
  • the invention has for its object to provide a coaxial line with improved cooling ability.
  • the coaxial line is characterized in that in the tubular inner conductor, a tube of smaller diameter closed at its two ends is arranged coaxially and that the annular space between this tube and the tubular inner conductor communicates with the channels in the Isolierstoff workn. Then, the cooling medium flows only through the annular gap or annulus between the tubular inner conductor and the enclosed by this and expediently also mounted at its ends to the relevant réelleleiterijns publisheden tube smaller diameter. With sufficient design of the ring cross-section, the cooling effect remains virtually unchanged, while significantly lower weight of the line and less effort required for the coolant circulation ancillaries.
  • the cooling of the thermally much less loaded outer conductor is not the subject of the invention. It can be done by means mounted on the outer conductor cooling fins, cooling coils or similar measures known per se.
  • insulating supports can be formed as outwardly guided through the outer conductor tubes (claim 2). Depending on the radial plane, three or four insulating supports, which are offset by 120 ° or 90 °, are generally sufficient. Depending on the required coolant flow, it may be sufficient to use only a portion of these insulating supports for supplying and discharging the cooling medium. By appropriate structural design of the Isolierstoff warn is then to ensure that no additional distortions of the RF field in the circumferential direction arise.
  • the Isolierstoff handn may be formed as a solid discs with radial channels (claim 3), for example, to divide the line into longitudinally-tight sections.
  • the channels of the Isolierstoff open into a chamber in an inner conductor connector at the end of the tubular inner conductor (claim 4).
  • the inner conductor connector also forms the bearing for the respective end of the tubular inner conductor.
  • the tube is the end face closed by a formed on the inner conductor connector flange (claim 5).
  • the tube may be closed at the end also via flanges, which are mounted axially and radially floating on the respective inner conductor connecting piece (claim 6).
  • the play in the axial direction avoids the emergence of axial constraining forces, either as a result of manufacturing tolerances, either because of different heat-dependent changes in length of the tube and this surrounding, tubular inner conductor.
  • the tube may have at its outer periphery against the inner wall of the tubular inner conductor supporting centering (claim 7). This ensures that the cross-section of the annular gap or annular space between the tubular inner conductor and the tube enclosed by it remains constant in the circumferential direction, uzw. even if the coaxial line overall describes a slight arc in the longitudinal direction.
  • the centering elements may be arranged along a helix, i. be arranged helically around the tube (claim 8), uzw. also as individual, spaced-apart elements.
  • centering elements may consist of axially extending webs (claim 9). This is aerodynamically more favorable than the arrangement along a helix.
  • the centering elements may be integral with the tube. (Claim 10). This is manufacturing technology particularly advantageous if the tube is not made of metal but of plastic.
  • tubular inner conductor may have in its jacket axial channels communicating with the channels in the Isolierstoff mann (claim 11).
  • Such an inner conductor can be made inexpensively, for example, as an extruded aluminum profile.
  • the coaxial line consists of separately cooled, electrically and mechanically interconnected sections (claim 12).
  • tubular inner conductors of adjoining sections of the line are best connected to one another via complementary plug connections (claim 13).
  • Such a complementary plug connection may consist of a flange plate terminating the chamber of the respective inner conductor connection with an axially extending first annular collar which engages over a second annular collar on the flange plate of the subsequent line section and in turn is contactingly overlapped by a ring of axially extending contact springs, which contacts the second Concentric annular collar surrounds (claim 14).
  • the first ring collar forms a kind of a plug, the second annular collar together with the contact spring ring the complementary coupler.
  • the free ends of the contact springs of the contact spring ring lie in a radial plane which is axially set back relative to the end face of the second annular collar containing radial plane (claim 15).
  • pre-centering is achieved when juxtaposing two line sections, in which the first annular collar engages over the second annular collar before the end face of the first annular collar comes to rest under the contact springs. This avoids that due to alignment springs to a damage of the contact springs and therefore to a non-uniform contact over the circumference, which would lead to the formation of reflections and intermodulation products as well as in the transmitted currents of several 1000 amps overheating and possibly Burning the contact surfaces would result.
  • the flange plates carrying the contacting annular collars are screwed to the associated inner conductor connecting pieces (claim 16).
  • the contact spring ring can be manufactured as a single part of the most suitable material for it. He will then be at his root with the Gland plate welded.
  • each of the tubular insulating material supports can be tilted with its inner end in the inner conductor connector and with its outer end in the réelleleiterwandung in an axial plane tilted (claim 19).
  • the tiltable mounting can be realized, for example, by annular beads at the respective ends of the insulating supports in conjunction with dome-shaped counter-bearings in the relevant recordings on the inner conductor connector and on a passage through the wall of the outer conductor.
  • FIG. 1 shows - shortened in the longitudinal direction - a portion of a coolable coaxial cable for transmitting very high RF power.
  • the line comprises an outer conductor tube 1, which is equipped at its two ends with connecting flanges 2.
  • the diameter of the outer conductor tube 1 may be in the range of 120 mm or more.
  • the outer conductor 1 coaxially surrounds a tubular inner conductor 3, which is equipped at its two ends with inner conductor connecting pieces 4.
  • Each of the inner conductor connecting pieces 4 is mounted on insulating supports 5 made of a suitable dielectric, preferably a ceramic material, in the corresponding connecting flanges 2, and the like. in this embodiment, four each insulating supports 5, as shown Fig. 2 evident.
  • the Isolierstoff Caren 5 are tubular and sealed by the connecting flanges 2 led to the outside. Their inner ends are sealed (see the illustrated grooves for receiving O-rings) in recesses of the inner conductor connecting pieces 4th
  • Chambers 6 are formed in the inner conductor connecting pieces 4 and communicate with the channels 5.1 in the insulating supports 5 via bores such as 6.1.
  • the inner conductor connecting pieces 4 have a first flange 4.1, which is overlapped by the respective end of the inner conductor tube 3. With this flange 4.1, the relevant end of the inner conductor tube 3 is preferably welded continuously over a circumferential seam. Alternatively, between the periphery of the flange 4.1 and the end of the inner conductor tube 3, an O-ring may be provided (not shown).
  • the inner conductor links 4 have a second flange 4.2 of smaller diameter. This is overlapped by the respective end of a coaxially arranged in the inner conductor tube 3 tube 7 of smaller diameter.
  • This tube 7 is not in the field-filled space and therefore does not have to be made of metal.
  • the coaxial annular space 8 between the tubular inner conductor 3 and the tube 7 communicates via holes 6.3 apertures 6.2 with the chamber 6 in the respective inner conductor connector 4, see also Fig. 2 ,
  • a preferably liquid cooling medium e.g. Water
  • a preferably liquid cooling medium e.g. Water
  • each chamber 6 On its side facing away from the tubular inner conductor 2, each chamber 6 is closed by a flange plate 10 or 11, which is connected to the inner conductor connector 4 via screws 9.
  • the flange plate 10 on the one (in Fig. 1 left) end of the line section has an axially oriented annular collar 10.1 with an inner diameter d1.
  • the flange plate 11 on the other (in Fig. 1 right) end of the line section has an annular collar 11.1 with the smaller outer diameter d2 ⁇ d1.
  • a contact spring ring 11.2 With the flange plate 11, a contact spring ring 11.2 is connected, which surrounds the annular collar 11.1 coaxial.
  • the free ends of the contact springs lie in a radial plane extending from the radial plane, which is the end face of the annular collar 11.1 contains an axial distance a is reset.
  • Fig. 3 illustrates that when two such line sections A and B of the annular collar 10.1 a plug element and the collar 11.1 forms together with the contact spring ring 11.2 a coupler element for the realization of the contacting connection between the tubular inner conductors 3 of the juxtaposed line pieces A and B.
  • contacting connection of the outer conductor 1 is between the connecting flanges 2 of in Fig. 4 shown ring 20 inserted from a feathered sheet.
  • Fig. 5 the line sections A and B are shown in the interconnected state.
  • the Jardinleiter fürsflansche 2 are screwed together as usual via tie rods 21.
  • the annular collars 10.1 and 11.1 together form the contact spring ring 11.2 a complementary connector for the tubular inner conductor.
  • Fig. 1 symbolically denoted by ⁇ 1
  • Fig. 8 shows such a sealed and RF-tight implementation.
  • the tubular insulating support 5 is sealed with an axial clearance ⁇ 2 received via an O-ring 52 in a guide sleeve 51, which sits with a protagonistflansch 53 in a recess 2.1 in the wall of strictlyleiter fürsflansches 2.
  • the thickness of theticianflansches 53 is slightly smaller than the depth of the recess.
  • a so-called worm contact 54 is added, which is elastic in the radial direction.
  • the worm contact is in turn surrounded by an O-ring 55.
  • the base flange 53 of the guide sleeve 51 is secured by means of a pressure plate 56 in the recess 2.1.
  • Perpendicular to the drawing plane, ie in the longitudinal direction of the line, the recess 2.1 is formed slot-like, so that the insulating material 5 including the guide sleeve 51 heat-induced changes in length ⁇ 1 of the tubular inner conductor 3 can follow relative to the outer conductor 1 and no Forcing forces occur. At the same time lets. This type of implementation and heat-related changes in length of the insulating support 5 in the radial direction.
  • FIG. 9 and 10 Another and simpler way to prevent the occurrence of constraining forces by heat induced length changes of the inner conductor relative to the outer conductor, illustrate the Fig. 9 and 10 .
  • the insulating support 5 is pivotally received in the inner conductor connector 4 and in the guide sleeve 51, either by kugelkalottenförmige training of its two ends in conjunction with sufficiently large-sized recesses in the inner conductor connector 4 and in the wall ofalthoughleiteritatisflansches 2 ( Fig. 9 ) or, complementary thereto, by forming corresponding annular beads in the receptacles of the ends of the insulating support 5 on the one hand in the inner conductor connector 4 and on the other hand in the guide sleeve 51 (FIG. Fig. 10 ).
  • the insulating sleeve can tilt ⁇ by small angle ⁇ around the point M.
  • the relatively thin, tubular inner conductor 3 is cooled by a cooling medium which flows through the annular space 8 created by means of the tube 7 of smaller diameter (cf. Fig. 1 ).
  • the inner conductor may be designed as a thick-walled tube 30 with numerous, closely spaced, axial channels 31.
  • Fig. 11 shows the corresponding cross section.
  • made of aluminum such tubes can be very easily produced by the extrusion process.
  • FIG. 12 is one opposite Fig. 1 modified embodiment shown.
  • the tube 7 enclosed by the tubular inner conductor 3 is closed at its two ends by flanges 71, each of which has a central journal 71.1 with which it is connected in a recess 41.1 sitting in the inner conductor connector 41 with play in particular in the axial but also in the radial direction. The radial play is drawn exaggerated for clarity.
  • the tube 7 is thus floating between the inner conductor links 41.
  • the space 8 between the tubular inner conductor 3 and the tube 7 communicates with the respective chamber 6 in the inner conductor connecting piece 41 via recesses 71.2 (cf. Fig.

Landscapes

  • Insulators (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Waveguides (AREA)

Claims (19)

  1. Conduite coaxiale avec un conducteur intérieur tubulaire (3), un conducteur extérieur (1), des supports en matériau isolant (5) entre le conducteur intérieur et le conducteur extérieur et des raccords pour la transmission d'un fluide de refroidissement à travers la conduite, caractérisée en ce qu'un tube (7) de plus petit diamètre fermé sur sa face frontale aux deux extrémités est disposé de façon coaxiale dans le conducteur intérieur tubulaire (3) et en ce que l'espace annulaire (8) entre ce tube (7) et le conducteur intérieur tubulaire (3) communique avec des canaux (5.1 ; 57.1) dans les supports en matériau isolant (5 ; 57) par lesquels le fluide de refroidissement est amené au conducteur intérieur (3), passe à travers celui-ci et en est évacué.
  2. Conduite coaxiale selon la revendication 1, caractérisée en ce que les supports en matériau isolant sont formés comme des tubes (5) traversant le conducteur extérieur (1) vers l'extérieur.
  3. Conduite coaxiale selon la revendication 1 ou 2, caractérisée en ce que les supports en matériau isolant sont réalisés comme des disques pleins (57) avec des canaux radiaux (57.1).
  4. Conduite coaxiale selon l'une des revendications 1 à 3, caractérisée en ce que les canaux (5.1 ; 57.1) des supports en matériau isolant (5 ; 57) débouchent dans une chambre (6) dans un raccord de conducteur intérieur (4) à l'extrémité du conducteur intérieur tubulaire (3).
  5. Conduite coaxiale selon l'une des revendications 1 à 4, caractérisée en ce que le tube (7) est fermé sur sa face d'extrémité par une bride (4.2) formée sur le raccord de conducteur intérieur (4).
  6. Conduite coaxiale selon l'une des revendications 1 à 5, caractérisée en ce que le tube (7) est fermé sur sa face d'extrémité par des brides (71) qui sont supportées de façon flottante dans le sens axial et radial (41.1, 71.1) sur le raccord de conducteur intérieur correspondant.
  7. Conduite coaxiale selon l'une des revendications 1 à 6, caractérisée en ce que le tube (7) possède des éléments de centrage (72) s'appuyant sur sa circonférence contre la paroi intérieure du conducteur intérieur tubulaire (3).
  8. Conduite coaxiale selon l'une des revendications 5 à 8, caractérisée en ce que les éléments de centrage (72) sont disposés le long d'une spirale (hélicoïdale) autour du tube (7).
  9. Conduite coaxiale selon la revendication 7, caractérisée en ce que les éléments de centrage (72) assurant l'appui se composent de barrettes (72.1) orientées dans le sens axial.
  10. Conduite coaxiale selon l'une des revendications 7 à 11, caractérisée en ce que les éléments de centrage (72) assurant l'appui sont formés d'un seul tenant avec le tube (7).
  11. Conduite coaxiale selon l'une des revendications 1 à 10, caractérisée en ce que le conducteur intérieur tubulaire (30) possède dans son enveloppe des canaux axiaux (31) qui communiquent avec les canaux des supports en matériau isolant.
  12. Conduite coaxiale selon l'une des revendications 1 à 11, caractérisée en ce qu'il se compose de segments (A, B) pouvant être refroidis séparément les uns des autres et reliés électriquement et mécaniquement.
  13. Conduite coaxiale selon la revendication 12, caractérisée en ce que les conducteurs intérieurs tubulaires (3, 30) de segments (A, B) contigus de la conduite peuvent être reliés entre eux par des raccords enfichables complémentaires.
  14. Conduite coaxiale selon la revendication 13, caractérisée en ce que le raccord enfichable complémentaire se compose d'une plaque de bride (10) fermant la chambre (6) du raccord de conducteur intérieur (4) avec un premier collier annulaire (10.1) s'étendant dans le sens axial, qui entoure un deuxième collier annulaire (11.1) sur la plaque de bride (11) du segment de conduite suivant et qui est entouré à son tour en établissant un contact par une couronne (11.2) de ressorts de contact s'étendant dans le sens axial, qui entoure le deuxième collier annulaire (11.1) de façon concentrique.
  15. Conduite coaxiale selon la revendication 14, caractérisée en ce que les extrémités libres des ressorts de contact de la couronne de ressorts de contact (11.2) se trouvent dans un plan radial qui est en recul dans le sens axial par rapport au plan radial contenant la surface d'extrémité du deuxième collier annulaire (11.1).
  16. Conduite coaxiale selon la revendication 15, caractérisée en ce que les plaques de bride (10, 11) sont vissées avec le raccord de conducteur intérieur (4).
  17. Conduite coaxiale selon l'une des revendications 1 à 16, caractérisée en ce que les supports en matériau isolant (5) sont passés à travers le conducteur extérieur (1) dans le sens axial de façon flottante.
  18. Conduite coaxiale selon l'une des revendications 1 à 17, caractérisée en ce que l'extrémité de chaque support en matériau isolant (5) traversant le conducteur extérieur (1) est entourée par une bride de guidage (51) qui est retenue de façon flottante dans le sens axial dans un évidement du conducteur extérieur, rendue étanche de façon élastique dans le sens radial par rapport à celui-ci et mise en contact de façon élastique dans le sens radial avec celui-ci.
  19. Conduite coaxiale selon l'une des revendications 2 à 18, caractérisée en ce que chacun des supports tubulaires en matériau isolant (5) est supporté à son extrémité intérieure dans le raccord de conducteur intérieur (4) et à son extrémité extérieure dans la paroi du conducteur extérieur (1) de façon à pouvoir basculer dans le plan axial.
EP04007218A 2003-04-02 2004-03-25 Ligne coaxiale avec refroidissement forcé Expired - Lifetime EP1465285B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10315021 2003-04-02
DE10315021 2003-04-02
DE10322482 2003-05-19
DE10322482 2003-05-19

Publications (2)

Publication Number Publication Date
EP1465285A1 EP1465285A1 (fr) 2004-10-06
EP1465285B1 true EP1465285B1 (fr) 2009-07-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04007218A Expired - Lifetime EP1465285B1 (fr) 2003-04-02 2004-03-25 Ligne coaxiale avec refroidissement forcé

Country Status (5)

Country Link
US (1) US7009103B2 (fr)
EP (1) EP1465285B1 (fr)
JP (1) JP2004312003A (fr)
DE (2) DE502004009680D1 (fr)
ES (1) ES2328477T3 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
FR2984617B1 (fr) * 2011-12-14 2014-11-28 Alstom Technology Ltd Coude a angles d'orientation multiples pour lignes a haute tension
US10283241B1 (en) 2012-05-15 2019-05-07 The United States Of America As Represented By The Secretary Of The Navy Responsive cryogenic power distribution system
DE102014206000A1 (de) * 2014-03-31 2015-10-01 Siemens Aktiengesellschaft Kühlvorrichtung
US10454329B2 (en) * 2014-04-04 2019-10-22 Dynamic E Flow Gmbh Electrical hollow conductor for an electromagnetic machine
FR3038488A1 (fr) * 2015-06-30 2017-01-06 Thales Sa Refroidissement d'un troncon de ligne coaxiale et d'un dispositif de production de plasma
PL435036A1 (pl) 2020-08-20 2022-02-21 General Electric Company Polska Spółka Z Ograniczoną Odpowiedzialnością Konstrukcja połączeń dla zespołu generatora
US11795837B2 (en) 2021-01-26 2023-10-24 General Electric Company Embedded electric machine
CN118335406A (zh) * 2022-10-28 2024-07-12 烟台凯勇电子科技有限公司 一种自带定位结构的输变电线缆

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US3331911A (en) * 1965-07-26 1967-07-18 Westinghouse Electric Corp Coaxial cable joint with a gas barrier
GB1340983A (en) * 1971-03-10 1973-12-19 Siemens Ag Superconductor cables
DE2130692B2 (de) * 1971-06-21 1978-01-12 Linde Ag, 6200 Wiesbaden Tieftemperaturkabel
GB1482967A (en) * 1973-10-24 1977-08-17 Siemens Ag Superconductive electric cable and cooling apparatus therefor
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FR2455378A1 (fr) * 1979-04-23 1980-11-21 Alsthom Cgee Jeu de barres de poste a haute tension
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DE3369034D1 (en) * 1983-01-27 1987-02-12 Bbc Brown Boveri & Cie Cooled electrical component
IT1277740B1 (it) * 1995-12-28 1997-11-12 Pirelli Cavi S P A Ora Pirelli Cavo superconduttore per alta potenza
DE19633857A1 (de) * 1996-08-16 1998-02-19 Siemens Ag Gekapselte, gasisolierte Hochspannungsanlage mit geschottetem Verbindungsbaustein
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DE10108843A1 (de) * 2000-06-05 2002-01-03 Didier Werke Ag Kühlbarer Koaxialleiter

Also Published As

Publication number Publication date
EP1465285A1 (fr) 2004-10-06
DE102004014757B4 (de) 2007-09-06
JP2004312003A (ja) 2004-11-04
US20050067175A1 (en) 2005-03-31
US7009103B2 (en) 2006-03-07
DE102004014757A1 (de) 2004-11-25
DE502004009680D1 (de) 2009-08-13
ES2328477T3 (es) 2009-11-13

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