WO2002018807A1 - MAGNETLAGER ZUR LAGERUNG EINER DREHBAREN WELLE UNTER VERWENDUNG VON HOCH-Tc-SUPRALEITERMATERIAL - Google Patents
MAGNETLAGER ZUR LAGERUNG EINER DREHBAREN WELLE UNTER VERWENDUNG VON HOCH-Tc-SUPRALEITERMATERIAL Download PDFInfo
- Publication number
- WO2002018807A1 WO2002018807A1 PCT/DE2001/003173 DE0103173W WO0218807A1 WO 2002018807 A1 WO2002018807 A1 WO 2002018807A1 DE 0103173 W DE0103173 W DE 0103173W WO 0218807 A1 WO0218807 A1 WO 0218807A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- bearing
- magnetic bearing
- arrangement
- shaft
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Definitions
- the invention relates to a magnetic bearing with a magnetic bearing of a rotatable shaft within a stator.
- the magnetic bearing should have the following features:
- a first bearing part is rigidly connected to the shaft and enclosed by a second bearing part belonging to the stator to form a bearing gap between these bearing parts, the first bearing part contains a magnet arrangement with permanent magnetic elements, - the second bearing part contains a superconducting arrangement with high-T c Superconductor material, magnetic bearing forces being produced between the superconductor arrangement and the permanent magnetic elements of the magnet arrangement, and
- a cooling device is provided for cooling the superconducting material of the superconducting arrangement to an operating temperature below the critical temperature of the superconducting material.
- Magnetic bearings allow contactless and therefore wear-free storage of moving parts. They do not require any lubricants and can be designed with low friction.
- a rotatable (rotating) body can be hermetically sealed, e.g. separate vacuum-tight from the surrounding area.
- Corresponding magnetic bearings are used, for example, in turbomolecular pumps, ultracentrifuges, high-speed spindles of machine tools and X-ray tubes with rotating anodes; use in motors, generators, turbines and compressors is also known.
- superconductors allow a new type of magnetic bearing:
- One of the bearing parts is formed here with permanent magnetic elements which, in the event of a change in position as a result of field changes in the superconductor material, induce shielding currents in a further second bearing part which surrounds the first bearing part at a distance.
- the resulting forces can be repulsive or attractive, but are directed in such a way that they counteract the deflection from a desired position.
- an inherently stable bearing can be achieved (see, for example, "Appl. Phys. Lett.”, Vol. 53, No. 16, 1988, pages 1554 to 1556).
- this is not the case here elaborate and fault-prone regulation; however, a cooling device for cooling the superconductor material to an operating temperature below the critical temperature of the superconductor material must be provided.
- Corresponding superconducting bearing parts of such magnetic bearings can be one of the first fields of application for the known metal-oxide high-T c superconductor materials, such as, for example, based on the material system Y-Ba-Cu-0, which can be cooled to an operating temperature of about 77 K with liquid nitrogen.
- the magnetic bearing on a rotor shaft contains a large number of ring-disc-shaped permanent magnetic elements, one behind the other in the axial direction. These elements are polarized so that there is an alternating polarization when viewed in the axial direction of the shaft. Comparatively thinner ferromagnetic intermediate elements are arranged between adjacent elements. These intermediate elements come first
- This bearing part of the rotor body with its magnet arrangement made of permanent magnetic elements is enclosed by a stationary bearing part of a stator.
- This bearing part contains a superconducting arrangement with high-T c superconducting material such as YBa 2 Cu 3 0 x , the aforementioned magnetic bearing forces being produced between the superconducting arrangement and the permanent magnetic elements of the magnet arrangement.
- the superconductor material of the conductor arrangement is kept at about 77 K with liquid nitrogen (LN 2 ).
- cooling channels are provided on the outside of the superconducting arrangement, through which this coolant is guided.
- the object of the present invention is therefore to design the magnetic bearing with the features mentioned at the outset such that, regardless of the cooling technology chosen, such a risk of bearing icing is minimized and the sealing effort is kept low.
- the superconducting arrangement and the magnet arrangement are additionally enclosed by at least one insulation space and in that an additional space is provided which is separate from this and which has the air gap and on the lateral end faces the superconductor arrangement and the magnet arrangement include radially extending to the shaft and there sealed from the shaft subspaces.
- Sealing of the additional space against the rotatable parts can be kept small. Because the seal uses the smallest possible diameter, whereby the peripheral speed on the rotating seal parts is minimized. This simplifies the function of the seal and increases the service life accordingly. The easier and therefore effective sealing of the additional room it also means that the risk of penetration of freezable gases is at least largely eliminated.
- the additional space of the magnetic bearing can thus be evacuated in a simple manner. This can advantageously reduce friction losses.
- a small amount of air could theoretically occur;
- severe icing is counteracted by the fact that a defective seal still severely impedes the exchange of air, especially since the corresponding flow cross-sections of the lateral subspaces are to be kept small.
- the magnetic bearing therefore has good emergency running properties.
- the additional space can be filled with a dry protective gas particularly advantageously.
- a dry protective gas Any gas or gas mixture which does not have any components freezing out at the operating temperature in the area of the bearing gap is suitable as a dry protective gas.
- Corresponding protective gases can be selected from the group He, Ne, Ar, N 2 , a gas mixture with at least one of these gases also being suitable. If the additional space is filled with a gas, the temperature is reduced from the warm shaft to the cold bearing gap in the side subspaces which are advantageously to be designed with a small cross-section, without thermal losses being caused by convection. Convection is prevented by the fact that the warm end of the side subspaces is reduced by gas
- Density is closer to the axis.
- a stable stratification is then achieved by the centrifugal force.
- the function is also possible with slightly fluctuating pressures in the gas space, so that gas losses due to leaks, for example in the sealing area, are tolerable within wide limits.
- the gas pressure can be below 1 bar, around 1 bar or lie above it, so that in the latter case in particular, access to moist air with ice formation in the cold area is reliably prevented.
- the at least one insulation space can in particular be evacuated. Instead, or preferably in addition, this space can be at least partially filled with at least one insulation means known per se.
- the cooling device of the magnetic bearing has at least one cryocooler with at least one cold head.
- This cold head is then thermally coupled to the superconducting arrangement for its indirect cooling, preferably via at least one heat-conducting body.
- the use of such a cryocooler has the advantage that the cooling capacity is available at the push of a button and the handling of cryogenic liquids is avoided. Indirect cooling by thermal conduction to the cold head is sufficient for effective cooling of the known high-T c superconductor materials.
- a cryocooler there is no possibility of suppressing icing of the bearing gap by discharging evaporating cooling gas such as nitrogen.
- the bearing gap should be as small as possible and, for example, be on the order of 1 mm. If the entire bearing were placed in an insulating vacuum vessel for this purpose, this would in principle have to be sealed off from the rotating shaft by two hermetic seals. However, this would have the disadvantage that if there is a leak, the vacuum breaks down and the function of the bearing and the mounted machine parts are correspondingly disturbed. The permanent magnetic elements would then slowly cool down essentially by heat radiation to an intermediate temperature between the operating temperature of the superconductor material and the outside temperature.
- FIG. 1 shows a longitudinal section through the magnetic bearing
- FIG. 2 shows a detailed view of a sealing device of the magnetic bearing according to Figure 1.
- corresponding parts are provided with the same reference numerals.
- the magnetic bearing which is generally designated by 2 in FIG. 1, is based on an embodiment as can be found in the aforementioned DE 44 36 831 C2.
- the bearing is provided for magnetic mounting of a (rotatable) rotor shaft 3, which can consist of a non-magnetic material such as a corresponding steel.
- the shaft 3 is part of an electrical machine, such as a generator, which is not shown in the figure.
- a first, also rotating bearing part 5 is assigned to it, which concentrically surrounds it in the storage area.
- This bearing part is via disc-shaped support elements 6a and 6b, which are advantageous to a minimum Heat introduction can consist of poorly heat-conducting material such as GRP, rigidly attached to the shaft 3.
- the first bearing part 5 contains a magnet arrangement 7 with ring-shaped elements 8i made of permanent magnetic material. Seen in the axial direction, these elements are alternately magnetically polarized and spaced apart from one another by ring-shaped intermediate elements 9i made of ferromagnetic material such as iron. The ferromagnetic material of these intermediate elements serves to concentrate the magnetic flux on the cylindrical outer surface of the first bearing part 5 and thereby increases the load-bearing capacity of the magnetic bearing. All elements 8i and 9i are arranged in a stack in a row in a carrier body 10, which ensures the frictional connection with the shaft 3 via the disk-shaped support elements 6a and 6b.
- the rotating first bearing part 5 with the permanent magnetic elements 8i, separated by a bearing gap 12, is surrounded by a second, hollow cylindrical, fixed bearing part 13, wherein the gap width w can be of the order of a few millimeters.
- the stationary bearing part 13 forming a stator has on its inner side facing the first bearing part 5 a hollow cylindrical superconductor arrangement with one of the known high-T c superconductor materials which is to be kept at an operating temperature below its critical temperature during operation. In this superconductor material, shielding currents are induced by the permanent magnetic elements 8i when the position thereof changes as a result of field changes, which lead to the desired magnetic bearing forces between the bearing parts 5 and 13.
- the hollow cylindrical superconductor arrangement 14 of the stationary second bearing part 13 is fastened on its side facing away from the bearing gap 12 via an intermediate cylinder 15 made of thermally highly conductive material such as Cu, for example, within a carrier body 16.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01962663A EP1313959B1 (de) | 2000-08-31 | 2001-08-20 | Magnetlager zur lagerung einer drehbaren welle unter verwendung von hoch-tc-supraleitermaterial |
DE50107857T DE50107857D1 (de) | 2000-08-31 | 2001-08-20 | Magnetlager zur lagerung einer drehbaren welle unter verwendung von hoch-tc-supraleitermaterial |
US10/363,425 US6762522B2 (en) | 2000-08-31 | 2001-08-20 | Magnetic bearing for suspending a rotating shaft using high Tc superconducting material |
CA002420735A CA2420735A1 (en) | 2000-08-31 | 2001-08-20 | Magnetic bearing, as a bearing for a shaft which can rotate, using a high-tc material |
JP2002523497A JP3840182B2 (ja) | 2000-08-31 | 2001-08-20 | 高Tc超伝導材料を使用して回転軸を支承する磁気軸受 |
AT01962663T ATE307986T1 (de) | 2000-08-31 | 2001-08-20 | Magnetlager zur lagerung einer drehbaren welle unter verwendung von hoch-tc-supraleitermaterial |
NO20030750A NO20030750L (no) | 2000-08-31 | 2003-02-17 | Magnetlager for opplagring av en roterbar aksel med anvendelse av et höy Tcsupraledermateriale |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10042962.9 | 2000-08-31 | ||
DE10042962A DE10042962C1 (de) | 2000-08-31 | 2000-08-31 | Magnetlager zur Lagerung einer drehbaren Welle unter Verwendung von Hoch-T¶c¶-Supraleitermaterial |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002018807A1 true WO2002018807A1 (de) | 2002-03-07 |
Family
ID=7654536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/003173 WO2002018807A1 (de) | 2000-08-31 | 2001-08-20 | MAGNETLAGER ZUR LAGERUNG EINER DREHBAREN WELLE UNTER VERWENDUNG VON HOCH-Tc-SUPRALEITERMATERIAL |
Country Status (8)
Country | Link |
---|---|
US (1) | US6762522B2 (de) |
EP (1) | EP1313959B1 (de) |
JP (1) | JP3840182B2 (de) |
AT (1) | ATE307986T1 (de) |
CA (1) | CA2420735A1 (de) |
DE (2) | DE10042962C1 (de) |
NO (1) | NO20030750L (de) |
WO (1) | WO2002018807A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003089799A1 (en) * | 2002-04-19 | 2003-10-30 | Carlson Roger W | Mixing system having non-contacting bearings |
DE102007036605A1 (de) * | 2007-08-02 | 2009-02-05 | Nexans | Stabilisiertes Hochtemperatur-Supraleiterlager |
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DE10236471C2 (de) * | 2001-11-07 | 2003-10-16 | Siemens Ag | Magnetische Lagerung einer Rotorwelle gegen einen Stator unter Verwendung eines Hoch-T¶c¶-Supraleiters |
DE10244651C2 (de) * | 2001-11-07 | 2003-08-28 | Siemens Ag | Magnetische Lagerung einer Rotorwelle gegen einen Stator unter Verwendung von Hoch-T-¶c¶-Supraleitermaterial |
EP1548301B1 (de) * | 2002-08-02 | 2007-10-10 | JTEKT Corporation | Supraleitendes magnetisches lager |
WO2005028872A2 (en) * | 2003-09-18 | 2005-03-31 | Myrakelle, Llc | Rotary blood pump |
WO2005039019A1 (ja) * | 2003-10-15 | 2005-04-28 | Rigaku Corporation | アクチュエータ |
DE20318389U1 (de) | 2003-11-27 | 2004-02-26 | Nexans | Magnetische Lagerung |
DE10358341B4 (de) * | 2003-12-12 | 2010-03-25 | Siemens Ag | Vorrichtung zum Lagern einer Kühlmittelzuführung für supraleitende Maschinen |
US20080260539A1 (en) * | 2005-10-07 | 2008-10-23 | Aker Kvaerner Subsea As | Apparatus and Method For Controlling Supply of Barrier Gas in a Compressor Module |
US20080009782A1 (en) * | 2006-06-28 | 2008-01-10 | Alza Corporation | Methods and Devices for Transdermal Electrotransport Delivery of Lofentanil and Carfentanil |
US7633192B2 (en) * | 2006-09-28 | 2009-12-15 | Siemens Energy, Inc. | Superconducting coil support structures |
DE102008034343B4 (de) | 2008-07-23 | 2017-03-16 | Continental Mechanical Components Germany Gmbh | Turbolader mit abgedichteter und gekühlter Lagerung |
KR101999970B1 (ko) * | 2008-09-19 | 2019-07-15 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
US20100128848A1 (en) * | 2008-11-21 | 2010-05-27 | General Electric Company | X-ray tube having liquid lubricated bearings and liquid cooled target |
CN101515774B (zh) * | 2009-03-26 | 2012-06-27 | 上海大学 | 高温超导永磁混合磁悬浮变频电机 |
US8080909B2 (en) * | 2009-05-19 | 2011-12-20 | Ford Global Technologies, Llc | Cooling system and method for an electric motor |
JP5440063B2 (ja) * | 2009-09-17 | 2014-03-12 | アイシン精機株式会社 | 超電導回転電機 |
DE102010004904A1 (de) | 2010-01-19 | 2011-09-15 | Schaeffler Technologies Gmbh & Co. Kg | Permanentmagnetisches Lager mit supraleitendem Hilfslager |
US8437815B2 (en) | 2010-07-06 | 2013-05-07 | Vaucher Aerospace Corporation | Superconducting rotary motor |
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US8437816B2 (en) | 2010-07-06 | 2013-05-07 | Vaucher Aerospace Corporation | Superconducting oscillator |
DE102010034168B3 (de) * | 2010-08-13 | 2012-02-23 | Siemens Aktiengesellschaft | Thermische Isolierung einer Blechungshülse gegenüber einer Welle in einer Rotationsmaschine |
US8401599B2 (en) | 2010-08-20 | 2013-03-19 | Vaucher Aerospace Corporation | Superconducting AC generator |
US8436499B2 (en) * | 2011-04-27 | 2013-05-07 | General Electric Company | Electrical machine with superconducting armature coils and other components |
US8396523B2 (en) | 2011-06-28 | 2013-03-12 | Vaucher Aerospace Corporation | Superconducting radial motor |
KR101350514B1 (ko) * | 2012-02-03 | 2014-01-10 | 삼성중공업 주식회사 | 초전도 베어링을 구비한 이중 반전 프로펠러식 추진장치 및 이를 구비한 선박 |
US9404392B2 (en) * | 2012-12-21 | 2016-08-02 | Elwha Llc | Heat engine system |
US20140174085A1 (en) * | 2012-12-21 | 2014-06-26 | Elwha LLC. | Heat engine |
US9752832B2 (en) | 2012-12-21 | 2017-09-05 | Elwha Llc | Heat pipe |
US10804064B2 (en) * | 2016-03-18 | 2020-10-13 | Varex Imaging Corporation | Magnetic lift device for an x-ray tube |
DE102018207662B4 (de) * | 2018-05-16 | 2020-07-02 | Siemens Aktiengesellschaft | Rotationsmaschine mit supraleitendem Magnetlager sowie Verfahren zum Anfahren einer Rotationsmaschine mit supraleitendem Magnetleiter |
US10756162B2 (en) | 2018-08-31 | 2020-08-25 | Taiwan Semiconductor Manufacturing Co., Ltd. | Structure and formation method of semiconductor device with magnetic element |
CN109026998A (zh) * | 2018-09-19 | 2018-12-18 | 中国科学院理化技术研究所 | 一种高温超导磁悬浮轴承系统 |
US10636612B2 (en) * | 2018-09-28 | 2020-04-28 | Varex Imaging Corporation | Magnetic assist assembly having heat dissipation |
US10672585B2 (en) | 2018-09-28 | 2020-06-02 | Varex Imaging Corporation | Vacuum penetration for magnetic assist bearing |
US10629403B1 (en) | 2018-09-28 | 2020-04-21 | Varex Imaging Corporation | Magnetic assist bearing |
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DE2034213A1 (de) | 1969-10-10 | 1971-05-06 | Ferrofluidics Corp | Magnetische Flüssigkeitsdichtung |
US5196748A (en) * | 1991-09-03 | 1993-03-23 | Allied-Signal Inc. | Laminated magnetic structure for superconducting bearings |
US5220232A (en) * | 1991-09-03 | 1993-06-15 | Allied Signal Aerospace | Stacked magnet superconducting bearing |
US5335505A (en) | 1992-05-25 | 1994-08-09 | Kabushiki Kaisha Toshiba | Pulse tube refrigerator |
US5633548A (en) * | 1990-07-17 | 1997-05-27 | Koyo Seiko Co., Ltd. | Method for setting up a superconducting bearing device |
DE4436831C2 (de) | 1993-12-13 | 1997-09-11 | Siemens Ag | Magnetische Lagerung einer Rotorwelle unter Verwendung von Hoch-T¶c¶-Supraleitermaterial |
DE19643844C1 (de) * | 1996-10-30 | 1998-05-07 | Karlsruhe Forschzent | Supraleitendes Magnetlager in Modulbauweise |
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US3612630A (en) * | 1970-01-23 | 1971-10-12 | Ferrofluidics Corp | Bearing arrangement with magnetic fluid defining bearing pads |
US4641978A (en) * | 1984-10-23 | 1987-02-10 | The United States Of America As Represented By The United States Department Of Energy | Bearing system |
US5330967A (en) * | 1990-07-17 | 1994-07-19 | Koyo Seiko Co., Ltd. | Superconducting bearing device stabilized by trapped flux |
US5214981A (en) * | 1991-07-26 | 1993-06-01 | Arch Development Corporation | Flywheel energy storage with superconductor magnetic bearings |
JP3961032B2 (ja) * | 1993-12-13 | 2007-08-15 | シーメンス アクチエンゲゼルシヤフト | 回転子軸の磁気軸受装置 |
US6199867B1 (en) * | 1997-09-30 | 2001-03-13 | Rigaku/Usa, Inc. | Rotary motion feedthrough device |
US6367241B1 (en) * | 1999-08-27 | 2002-04-09 | Allison Advanced Development Company | Pressure-assisted electromagnetic thrust bearing |
-
2000
- 2000-08-31 DE DE10042962A patent/DE10042962C1/de not_active Expired - Fee Related
-
2001
- 2001-08-20 CA CA002420735A patent/CA2420735A1/en not_active Abandoned
- 2001-08-20 EP EP01962663A patent/EP1313959B1/de not_active Expired - Lifetime
- 2001-08-20 US US10/363,425 patent/US6762522B2/en not_active Expired - Fee Related
- 2001-08-20 DE DE50107857T patent/DE50107857D1/de not_active Expired - Lifetime
- 2001-08-20 JP JP2002523497A patent/JP3840182B2/ja not_active Expired - Fee Related
- 2001-08-20 AT AT01962663T patent/ATE307986T1/de not_active IP Right Cessation
- 2001-08-20 WO PCT/DE2001/003173 patent/WO2002018807A1/de active IP Right Grant
-
2003
- 2003-02-17 NO NO20030750A patent/NO20030750L/no not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2034213A1 (de) | 1969-10-10 | 1971-05-06 | Ferrofluidics Corp | Magnetische Flüssigkeitsdichtung |
US5633548A (en) * | 1990-07-17 | 1997-05-27 | Koyo Seiko Co., Ltd. | Method for setting up a superconducting bearing device |
US5196748A (en) * | 1991-09-03 | 1993-03-23 | Allied-Signal Inc. | Laminated magnetic structure for superconducting bearings |
US5220232A (en) * | 1991-09-03 | 1993-06-15 | Allied Signal Aerospace | Stacked magnet superconducting bearing |
US5335505A (en) | 1992-05-25 | 1994-08-09 | Kabushiki Kaisha Toshiba | Pulse tube refrigerator |
DE4436831C2 (de) | 1993-12-13 | 1997-09-11 | Siemens Ag | Magnetische Lagerung einer Rotorwelle unter Verwendung von Hoch-T¶c¶-Supraleitermaterial |
DE19643844C1 (de) * | 1996-10-30 | 1998-05-07 | Karlsruhe Forschzent | Supraleitendes Magnetlager in Modulbauweise |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003089799A1 (en) * | 2002-04-19 | 2003-10-30 | Carlson Roger W | Mixing system having non-contacting bearings |
DE102007036605A1 (de) * | 2007-08-02 | 2009-02-05 | Nexans | Stabilisiertes Hochtemperatur-Supraleiterlager |
DE102007036605B4 (de) * | 2007-08-02 | 2009-12-24 | Nexans | Stabilisiertes Hochtemperatur-Supraleiterlager |
Also Published As
Publication number | Publication date |
---|---|
JP2004507685A (ja) | 2004-03-11 |
EP1313959A1 (de) | 2003-05-28 |
ATE307986T1 (de) | 2005-11-15 |
DE50107857D1 (de) | 2005-12-01 |
NO20030750L (no) | 2003-04-25 |
EP1313959B1 (de) | 2005-10-26 |
US20040021382A1 (en) | 2004-02-05 |
CA2420735A1 (en) | 2003-02-26 |
NO20030750D0 (no) | 2003-02-17 |
US6762522B2 (en) | 2004-07-13 |
JP3840182B2 (ja) | 2006-11-01 |
DE10042962C1 (de) | 2002-05-02 |
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