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WO2003002906A1 - Dispositif d'alimentation en courant destine a un appareillage electrique a refroidir et comprenant un dispositif de sectionnement electrique, ainsi qu'utilisation de ce dispositif - Google Patents

Dispositif d'alimentation en courant destine a un appareillage electrique a refroidir et comprenant un dispositif de sectionnement electrique, ainsi qu'utilisation de ce dispositif Download PDF

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Publication number
WO2003002906A1
WO2003002906A1 PCT/DE2002/002281 DE0202281W WO03002906A1 WO 2003002906 A1 WO2003002906 A1 WO 2003002906A1 DE 0202281 W DE0202281 W DE 0202281W WO 03002906 A1 WO03002906 A1 WO 03002906A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
superconducting
electrical
supply device
vacuum interrupter
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.)
Ceased
Application number
PCT/DE2002/002281
Other languages
German (de)
English (en)
Inventor
Bernd Wacker
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2003002906A1 publication Critical patent/WO2003002906A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure
    • F17C13/006—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure for Dewar vessels or cryostats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
    • H01F6/065—Feed-through bushings, terminals and joints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches

Definitions

  • Power supply device for electrical equipment to be cooled, with electrical separating device and use of the device
  • the invention relates to a power supply device for an electrical device to be cooled by a coolant to low temperature and arranged in a cryostat interior, the power supply device having an electrical isolating device which has a switching element to be electrically connected to the electrical device, a switch to an external, current supply device located at room temperature, electrical switch to be connected and
  • Such a power supply device is the
  • the invention further relates to
  • the electrical devices, devices or systems considered here can be devices with normal conductors to be cooled, such as, for example, made of Cu or, in particular, devices that provide for the use of superconducting material. It is precisely the application of superconductivity in energy or medical technology that requires electricity from a low temperature level, for example from nitrogen at 77 K, to room temperature from 300 K or from helium with 4 K to nitrogen temperature at 77 K and further to room temperature of 300 K must be conducted. This is associated with the problem that a normal conductor made of a metal or a metal alloy has to be used for a required power supply device. According to the Wiedemann-Franz-Lorenz 'see law but every metal has the property of being an equally good electrical and thermal conductor. You can control the temperature range below 77 K with superconducting tapes as the power supply, which are made of metal oxide, ceramic high-T c superconductor material (HTS).
  • HTS high-T c superconductor material
  • pluggable power supply parts must be provided in the vacuum of the required cryostat, so that the design-related probability of vacuum leakage of the cryostat is always given, in particular on flanges. If pluggable power supply parts are installed in a gas environment, there are losses due to the thermal conductivity of the gas. Also in the case of the current supply device which can be gathered from the DE-C2 document mentioned at the outset, its switching pieces or contact parts are located in an upwardly open gas space which is filled with He exhaust gas which comes from a He coolant with which the superconducting agent used there Material to be cooled to the required low temperature.
  • the object of the present invention is to further develop the power supply device with the features mentioned at the outset in such a way that, on the one hand, its design complexity is reduced and, nevertheless, a good thermal separation of its switching elements can be ensured. Furthermore, preferred uses of such a power supply device are to be specified.
  • its separating device should have a vacuum interrupter with normally conductive switching elements arranged in a high vacuum, the vacuum interrupter being accommodated in the cryostat interior in a region facing the room temperature side. This area facing the room temperature side should be outside the low temperature area with the electrical equipment.
  • a vacuum interrupter can be installed in the current path of the power supply device to save space. -
  • the power supply can be interrupted at any time and also briefly as soon as it is no longer needed.
  • the switching elements of the vacuum interrupter are in a high vacuum of in particular below 10 ⁇ 8 bar with extremely low thermal conductivity. Compared to a plug-in connection, switching operations can even be performed depending on the type of vacuum interrupter used.
  • Known vacuum interrupters are characterized by a high level of maintenance-free, e.g. 10,000 mechanical switching cycles and more can be guaranteed.
  • the area of the cryostat interior receiving the vacuum interrupter can be at least partially filled with a solid insulation medium, the insulation medium being a foamed material. In this way it is also possible to mechanically fix the vacuum interrupter and the actuating means required for it.
  • the power supply device for a superconducting device is advantageously used as electrical equipment, which preferably contains conductors with high-T c superconducting material.
  • the cryotechnology is relatively simple.
  • the use of the power supply device for an in particular superconducting transformer of a mobile vehicle or for an in particular superconducting de Magnet arrangement of a system for magnetic resonance imaging can be regarded as particularly advantageous.
  • These electrical devices are characterized in that they do not require a permanent connection to an external power supply device that is at room temperature.
  • FIG. 1 shows a sectional view through a known vacuum interrupter for the current supply device according to the invention
  • FIG. 2 shows a use of this vacuum interrupter in a medium-voltage contactor as a sectional view
  • FIG. 3 shows a sectional view through a current supply device with such a medium-voltage contactor.
  • Corresponding parts are each provided with the same reference numerals in the figures.
  • FIG. 1 shows a known vacuum interrupter (see “Siemens Online Catalog 2001”: energy transmission and distribution, catalog HG 11.11 / medium voltage, circuit breaker / 3AH1 high-current circuit breaker / 3AH1 high-current circuit breaker / construction and mode of operation).
  • the vacuum interrupter is intended for medium-voltage applications;
  • the vacuum switching tube generally designated 2, contains a switching chamber 3 for receiving a movable switching element 4 and a fixed switching element 5.
  • the switching chamber has a high vacuum of less than 10 " bar, for example of 10 " 9 bar
  • the fixed contact 5 is with a Provide connecting plate 6, which is to be connected to a connecting conductor, which leads to an electrical device or device or system to be kept at a low temperature by a coolant.
  • a superconducting device is assumed to be electrical equipment, although devices with cooled, normally conductive material can also be used.
  • the movable contact piece 4 of the vacuum interrupter 2 used is connected to a drive and connection bolt 7.
  • This connecting bolt is to be connected to a connecting conductor that leads to an external power supply device that is at room temperature.
  • mechanical actuating means act on this bolt in order to join or separate the contact pieces.
  • a guide 8 for the drive and connecting bolt 7 and a metal bellows 9 are also shown.
  • An insulator 10 surrounds the switching chamber 3 in the form of a jacket.
  • FIG. 2 shows a somewhat simplified representation of a known medium-voltage contactor 11 with a vacuum interrupter 2 (cf. "Electrical Installation Technology, Part 1: Power Supply and Distribution", Siemens AG (DE), 1993, pages 147 to 150).
  • This medium-voltage contactor has a never - To actuate the movable switching element of the vacuum interrupter 2 there are actuating means 12 which have a mechanical connecting part 13 between the medium and the low-voltage part.
  • the drive system is indicated by a magnet 14 in the low-voltage part nt from these actuating means, a connection conductor 15 connected to the movable contact piece of the vacuum interrupter 2 and an Ans connected to the fixed contact piece of this interrupter are also shown in the figure terminal conductor 16 can be seen.
  • the installation of the medium-voltage contactor 11 shown in FIG. 2 in a cryostat can be seen in FIG. 3.
  • the construction of this medium-voltage contactor essentially represents a separating device 11 'for a power supply device 20 according to the invention.
  • This power supply device accommodates a superconducting device 19, which is accommodated in the interior 21 of the cryostat designated by 22 and is not shown in the figure, with an external, not shown Connect power supply device.
  • This power supply device is located in an area at room temperature RT.
  • the superconducting device 19 must be arranged in a region at low temperature TT, for example in an LN 2 region.
  • the superconducting device 19 can preferably be a transformer on a mobile vehicle, such as one
  • the separating device 11 1 is particularly advantageous.
  • the vacuum interrupter 2 can also be used to disconnect under voltage or when idling or under load.
  • the superconducting device 19 can also be a superconducting magnet arrangement using HTS material from a system for magnetic resonance imaging (or nuclear magnetic resonance or nuclear magnetic imaging). Because with such magnet arrangements, the current supply device is only required when charging or energizing the magnets. Thereafter, the magnets of the arrangement are short-circuited many times, so that the power supply must then be interrupted.
  • other superconducting devices can also be equipped with the power supply device according to the invention, provided that a continuous power supply is not required or a disconnection of the power path is desired, for example for maintenance reasons.
  • the superconducting device 19 is arranged in the region 23 located at low temperature TT. That area is filled by a coolant to keep this device at the superconducting operating temperature, for example with LN 2 when using HTS material of the superconducting device.
  • the region of the cryostat interior 21 which is located above this low-temperature region 23 and faces the room temperature side is generally designated by 24. This area can be completely filled with exhaust gas from the coolant, for example GN 2 exhaust gas. It is advantageous to have the separating device 11 ', the sub-area 24a facing the room temperature-side cover 25 of the cryostat 22 at least partially filled with a solid insulation medium 26.
  • This insulation medium can in particular be a foamed material such as a styrofoam (brand name "Styrofoam").
  • the part 24b of the region 24 facing the low-temperature region 23 can be filled with GN 2 exhaust gas, which of course also includes the subspace 24a can penetrate with the insulation medium.
  • the vacuum interrupter of the separating device 11 ' is connected to a connecting conductor 15 on the room temperature side, which is connected through the cryostat cover 25 to a bushing 27 e.g. made of epoxy resin from the cryostat interior 21 in the area to room temperature RT and there leads to the external power supply device.
  • a low-temperature connection lead 16 of the vacuum interrupter leads from the separating device 11 'to the superconducting device 19, e.g. a solenoid, in the area 23 at low temperature TT.
  • electrical connection wires 28 are also indicated, which lead through the cover 25 to the actuating means 12 of the separating device 11 '.
  • a superconducting device 19 which contains HTS conductor material and is to be cooled with LN 2 .
  • the power supply device is of course also suitable for superconducting devices with LHe or GHe cooling technology.
  • the connected electrical equipment need not be one of superconducting technology. This is because electrical devices can also be connected to the power supply device just as well, for which normally conductive material to be cooled, such as Cu, is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en courant (20) pour un appareillage électrique (19) installé dans une chambre intérieure de cryostat (21), notamment un dispositif supraconducteur. Le dispositif d'alimentation en courant selon l'invention comprend un dispositif de sectionnement électrique (11') placé dans une zone (24) orientée côté température ambiante de la chambre intérieure (21). Le dispositif de sectionnement (11') comprend un tube d'interrupteur à vide (2) pourvu de pièces de contact à conduction normale placées dans un vide poussé.
PCT/DE2002/002281 2001-06-28 2002-06-21 Dispositif d'alimentation en courant destine a un appareillage electrique a refroidir et comprenant un dispositif de sectionnement electrique, ainsi qu'utilisation de ce dispositif Ceased WO2003002906A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10131235.0 2001-06-28
DE2001131235 DE10131235C1 (de) 2001-06-28 2001-06-28 Stromzuführungsvorrichtung für eine zu kühlende elektrische Gerätschaft mit elektrischer Trenneinrichtung sowie Verwendung der Vorrichtung

Publications (1)

Publication Number Publication Date
WO2003002906A1 true WO2003002906A1 (fr) 2003-01-09

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ID=7689799

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Application Number Title Priority Date Filing Date
PCT/DE2002/002281 Ceased WO2003002906A1 (fr) 2001-06-28 2002-06-21 Dispositif d'alimentation en courant destine a un appareillage electrique a refroidir et comprenant un dispositif de sectionnement electrique, ainsi qu'utilisation de ce dispositif

Country Status (2)

Country Link
DE (1) DE10131235C1 (fr)
WO (1) WO2003002906A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013114233A1 (fr) * 2012-02-01 2013-08-08 Koninklijke Philips N.V. Commutation automatique du courant des conducteurs pour aimants supraconducteurs
GB2506009A (en) * 2012-07-27 2014-03-19 Gen Electric Superconducting magnet with a retractable current lead arrangement
CN108899181A (zh) * 2018-06-29 2018-11-27 深圳中广核工程设计有限公司 一种核电站变压器防过电压装置以及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1023381C2 (nl) † 2003-05-09 2004-11-15 Eaton Electric Nv Elektromagnetische actuator.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792220A (en) * 1972-09-19 1974-02-12 Hitachi Ltd Device for connecting extreme low temperature cable with normal temperature electric apparatus
US3839689A (en) * 1972-01-12 1974-10-01 M Biltcliffe Detachable leads for a superconducting magnet
US4314123A (en) * 1979-01-18 1982-02-02 Siemens Aktiengesellschaft Current feed for a super-conducting magnet coil
EP0789368A1 (fr) * 1996-02-09 1997-08-13 Siemens Aktiengesellschaft Installation supraconductrice avec un dispositif supraconducteur à refroidir indirectement et un système d'amenée de courant
EP1089031A2 (fr) * 1999-10-01 2001-04-04 Abb Research Ltd. Dispositif cryogénique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4986077A (en) * 1989-06-21 1991-01-22 Hitachi, Ltd. Cryostat with cryo-cooler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839689A (en) * 1972-01-12 1974-10-01 M Biltcliffe Detachable leads for a superconducting magnet
US3792220A (en) * 1972-09-19 1974-02-12 Hitachi Ltd Device for connecting extreme low temperature cable with normal temperature electric apparatus
US4314123A (en) * 1979-01-18 1982-02-02 Siemens Aktiengesellschaft Current feed for a super-conducting magnet coil
EP0789368A1 (fr) * 1996-02-09 1997-08-13 Siemens Aktiengesellschaft Installation supraconductrice avec un dispositif supraconducteur à refroidir indirectement et un système d'amenée de courant
EP1089031A2 (fr) * 1999-10-01 2001-04-04 Abb Research Ltd. Dispositif cryogénique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013114233A1 (fr) * 2012-02-01 2013-08-08 Koninklijke Philips N.V. Commutation automatique du courant des conducteurs pour aimants supraconducteurs
CN104094367B (zh) * 2012-02-01 2017-02-22 皇家飞利浦有限公司 用于超导磁体的电流引线的自动电流切换
US9746533B2 (en) 2012-02-01 2017-08-29 Koninklijke Philips N.V. Automatic current switching of current leads for superconducting magnets
US9891298B2 (en) 2012-02-01 2018-02-13 Koninklijke Philips N.V. Automatic current switching of current leads for superconducting magnets
GB2506009A (en) * 2012-07-27 2014-03-19 Gen Electric Superconducting magnet with a retractable current lead arrangement
GB2506009B (en) * 2012-07-27 2015-05-06 Gen Electric Superconducting magnet with a retractable current lead arrangement
US9182464B2 (en) 2012-07-27 2015-11-10 General Electric Company Retractable current lead
CN108899181A (zh) * 2018-06-29 2018-11-27 深圳中广核工程设计有限公司 一种核电站变压器防过电压装置以及方法

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