DE2951010C2 - Permanent magnetic radial bearing - Google Patents

Permanent magnetic radial bearing

Info

Publication number
DE2951010C2
DE2951010C2 DE19792951010 DE2951010A DE2951010C2 DE 2951010 C2 DE2951010 C2 DE 2951010C2 DE 19792951010 DE19792951010 DE 19792951010 DE 2951010 A DE2951010 A DE 2951010A DE 2951010 C2 DE2951010 C2 DE 2951010C2
Authority
DE
Germany
Prior art keywords
axial
radial
magnetization
permanent magnet
magnet rings
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
Application number
DE19792951010
Other languages
German (de)
Other versions
DE2951010A1 (en
Inventor
Marlene Dipl.-Ing. 6000 Frankfurt Marinescu
Hardo Dipl.-Ing. 3300 Braunschweig May
Gert Dr.-Ing. 4670 Cappenberg Sobottka
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Edelstahlwerke AG
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 Thyssen Edelstahlwerke AG filed Critical Thyssen Edelstahlwerke AG
Priority to DE19792951010 priority Critical patent/DE2951010C2/en
Priority to GB8038275A priority patent/GB2065794B/en
Priority to NL8006765A priority patent/NL8006765A/en
Priority to FR8026519A priority patent/FR2472106B1/en
Publication of DE2951010A1 publication Critical patent/DE2951010A1/en
Application granted granted Critical
Publication of DE2951010C2 publication Critical patent/DE2951010C2/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/04Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406Magnetic bearings
    • F16C32/0408Passive magnetic bearings
    • F16C32/0423Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0425Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Die Erfindung betrifft ein Dauermagnetisches Radiallager mit den Merkmalen des Oberbegriffs des An-Spruchs. The invention relates to a permanent magnetic radial bearing with the features of the preamble of the claim.

Dauermagnetische Radiallager sind z. B. für hochtourig laufende Separatoren für die Urananreicherung bekannt. Die Separatoren werden an ihrem oberen Ende durch die Radiailager gelagert. Diese Radiailager wurden bisher aus isotropen AlNiCo-Magneten hergestellt, die aus radial magnetisierten übereinander angeordneten Dauermagnetringen bestehen. Da die Radialsteifigkeit bei dieser Ausführung in sehr starkem Maß beeinflußt wird durch die axiale Auslenkung, konnten nur verhältnismäßig kurze Separatoren gelagert werden. Bei hohen Umdrehungsgeschwindigkeiten tritt nämlich im Rohr eine Verkürzung durch radiale Aufbauchung auf. Diese axiale Verschiebung mußte aufgrund der Empfindlichkeit dieser bekannten Ausführung durch aufwendige mechanische Hilfsmittel abgefangen werden. Permanent magnetic radial bearings are z. B. for high-speed running separators known for uranium enrichment. The separators are at their top stored by the radial bearings. These radial bearings were previously made from isotropic AlNiCo magnets, which consist of radially magnetized permanent magnet rings arranged one above the other. Because the radial stiffness this version is influenced to a very large extent by the axial deflection, could only relatively short separators are stored. This occurs at high rotational speeds a shortening in the tube due to radial bulges. This axial displacement had to be due to the Sensitivity of this known design can be intercepted by complex mechanical aids.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, Lager mit höherer radialer Steifigkeit zu schaffen, die eine größere Baulänge des gelagerten Teils gestattet. Dabei soll die Radialsteifigkeit bei maximal vorgegebenen Axialkräften und einer vorgesehenen Auslenkung in axialer Richtung von ± 7 mm einen Mindestwert von 1000 N/m nicht unterschreiten und im Arbeitspunkt mindestens 2000 N/m betragen.The present invention is based on the object of providing bearings with greater radial rigidity create that allows a greater length of the stored part. The radial stiffness should be at maximum given axial forces and an intended deflection in the axial direction of ± 7 mm of 1000 N / m and not less than 2000 N / m at the operating point.

Zur Lösung dieser Aufgabe wird ein Lager mit den im Anspruch angeführten Merkmalen vorgeschlagen.To solve this problem, a bearing with the features listed in the claim is proposed.

Um bei vorgegebener axialer Auslenkung Mindestwerte der Radialsteifigkeit nicht zu unterschreiten, müssen die Ringhöhen zwischen feststehendem und beweglichem Lagerteil unterschiedlich sein. Das optimale Axiallängenverhältnis wurde mit 1 :2,5 ermittelt.In order not to fall below minimum values of the radial stiffness with a given axial deflection, must the ring heights between the fixed and movable bearing part may be different. The optimal axial length ratio was determined to be 1: 2.5.

Die Vorteile des erfindungsgemäßen Lagers sind:The advantages of the bearing according to the invention are:

1. Bei vorgegebener axialer Auslenkung Erzielung einer vorgegebenen radialen Steifigkeit, die eine Verringerung von Unwuchten bedeutet,1. Achieving a given axial deflection specified radial rigidity, which means a reduction in imbalances,

2. Auffangen der axialen Längenänderung des Systems im Magnetlager und damit Verzicht auf aufwendige mechanische Mittel. e>o2. Absorption of the axial change in length of the system in the magnetic bearing, thus avoiding complex mechanical means. e> o

In der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemäßen dauermagnetischen Radiallagers schematisch dargestellt.In the drawing is an embodiment of the invention permanent magnetic radial bearing shown schematically.

Die beiden konz.cntrisch ineinander gesetzten Dauer- μ magnetringe 1, 2 sind jeweils in axialer Richtung 3 magnetisiert, und zwar in der Vorzugslagc der Magnetisierung. Der innere Ring 2 ist auf einer nichtma^nctisicrba-The two conc.cntrically intertwined permanent μ Magnetic rings 1, 2 are each magnetized in the axial direction 3, specifically in the preferred position of magnetization. The inner ring 2 is on a non-machined

Claims (1)

Patentanspruch:Claim: Dauermagnetisches Radiallager, insbesondere für Ultragaszentrifugen, bei dem die geforderte Radialsteifigkeit im gesamten axialen Auslenkungsbereich nicht unterschritten wird, bestehend aus zwei koaxial ineinander angeordneten durch in der Vorzugsiage der Magnetisierung gleichsinnige axiale Magnetisierung einander in radialer Richtung abstoßenden Dauermagnetringen, die relativ zueinander drehbar angeordnet sind, dadurch gekennzeichnet, daß das Axiallängenverhältnis der Dauermagnetringe (1,2)1 : 2,5 beträgt.Permanent magnetic radial bearing, especially for ultra-gas centrifuges, which has the required radial rigidity is not fallen below in the entire axial deflection range, consisting of two coaxial arranged one inside the other due to axial magnetization in the same direction in the preferred position of the magnetization permanent magnet rings which repel each other in the radial direction and which are rotatable relative to each other are arranged, characterized in that the axial length ratio of the permanent magnet rings (1,2) is 1: 2.5. ren Welle 4 befestigt, wahrend der äußere Ring 1 mit gleicher Magnetisierungsrichtung an einem Gehäuse 5 befestigt ist Das stabile Gleichgewicht in axialer Richtung kann mit einem Stirnfestlager erreicht werden.Ren shaft 4 attached, while the outer ring 1 with the same direction of magnetization is attached to a housing 5 The stable equilibrium in the axial direction can be achieved with a front fixed bearing. Um axiale Relativverschiebungen der Dauermagnetringe 1, 2 ohne wesentliche Verringerung der radialen Steifigkeit zuzulassen, wird der innere 2 oder auch der äußere Magnetring 1 mit einer größeren Axiallänge (Magnetisierungshöhe) ausgeführtIn order to achieve relative axial displacements of the permanent magnet rings 1, 2 without a significant reduction in the radial To allow rigidity, the inner 2 or the outer magnetic ring 1 becomes with a greater axial length (Magnetization height) carried out
DE19792951010 1979-12-19 1979-12-19 Permanent magnetic radial bearing Expired DE2951010C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19792951010 DE2951010C2 (en) 1979-12-19 1979-12-19 Permanent magnetic radial bearing
GB8038275A GB2065794B (en) 1979-12-19 1980-11-28 Magnetic bearings
NL8006765A NL8006765A (en) 1979-12-19 1980-12-12 PERMANENT MAGNETIC RADIAL BEARING.
FR8026519A FR2472106B1 (en) 1979-12-19 1980-12-15 PERMANENT MAGNETIC TRANSVERSE BEARING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792951010 DE2951010C2 (en) 1979-12-19 1979-12-19 Permanent magnetic radial bearing

Publications (2)

Publication Number Publication Date
DE2951010A1 DE2951010A1 (en) 1981-07-09
DE2951010C2 true DE2951010C2 (en) 1984-09-06

Family

ID=6088850

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792951010 Expired DE2951010C2 (en) 1979-12-19 1979-12-19 Permanent magnetic radial bearing

Country Status (4)

Country Link
DE (1) DE2951010C2 (en)
FR (1) FR2472106B1 (en)
GB (1) GB2065794B (en)
NL (1) NL8006765A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017984A1 (en) * 2008-04-07 2009-10-08 Rothe Erde Gmbh Magnetic bearing and method for producing a suitable bearing ring

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2305416A (en) * 1941-11-19 1942-12-15 Gen Electric Magnetic suspension
GB655429A (en) * 1947-02-25 1951-07-18 Hermann Heidenwolf Apparatus for measuring temperature
DE1497253A1 (en) * 1966-03-19 1970-04-23 Siemens Ag Free-floating mount of a runner with a vertical shaft, especially the runner of an induction electricity counter
DE2136371A1 (en) * 1971-07-21 1973-02-01 Braun Karl MAGNETIC STORAGE OF SHAFTS OR THE LIKE
DE2421853A1 (en) * 1974-05-06 1975-11-20 Michael Smit High speed magnetic bearing - consists of two concentric magnetised rings attached to shaft and housing
FR2368638A1 (en) * 1976-10-21 1978-05-19 Anvar Magnetic centring appts. for axially rotating parts - the magnets being made of cobalt and rare earth mixts. of high magnetic stability
CH611990A5 (en) * 1977-01-17 1979-06-29 Sulzer Ag

Also Published As

Publication number Publication date
FR2472106A1 (en) 1981-06-26
GB2065794A (en) 1981-07-01
GB2065794B (en) 1984-02-15
NL8006765A (en) 1981-07-16
DE2951010A1 (en) 1981-07-09
FR2472106B1 (en) 1985-11-29

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee