EP0344464A1 - Slip ring arrangement for rotary electrical machines - Google Patents

Slip ring arrangement for rotary electrical machines Download PDF

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Publication number
EP0344464A1
EP0344464A1 EP89107651A EP89107651A EP0344464A1 EP 0344464 A1 EP0344464 A1 EP 0344464A1 EP 89107651 A EP89107651 A EP 89107651A EP 89107651 A EP89107651 A EP 89107651A EP 0344464 A1 EP0344464 A1 EP 0344464A1
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EP
European Patent Office
Prior art keywords
slip ring
slip rings
ring arrangement
slip
leaf springs
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.)
Withdrawn
Application number
EP89107651A
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German (de)
French (fr)
Inventor
Klaus Junghans
Jakob Steinegger
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.)
ABB Asea Brown Boveri Ltd
ABB AB
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ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0344464A1 publication Critical patent/EP0344464A1/en
Withdrawn legal-status Critical Current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
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/14—Fastenings of commutators or slip-rings to shafts

Definitions

  • the invention relates to a slip ring arrangement for rotating electrical machines with a large rotor diameter, in particular hydrogen generators, the paired slip rings being fastened to a cylindrical outer surface of the rotor next to the rotor coils.
  • the invention relates to a state of the art, such as results from the outer ring generator of the Austrian power plant Weinzödl, supplied by the company Elin-Union AG.
  • the poles are screwed onto the outer ring of the turbine outer ring.
  • the excitation current supply is via two one-piece slip rings that are flanged to the outer rim on the underwater side.
  • the outer ring has a flange-like extension, to which the two slip rings are screwed by means of axially extending bolts against the outer ring and insulated from one another.
  • the invention has for its object to provide a slip ring assembly for rotating electrical machines with large rotor diameters, which withstands the different operating requirements, especially the thermal stresses, ensures excellent centricity between slip ring and slip ring carrier and is also simple and economical.
  • slip rings are mechanically and thermally decoupled from the rotor.
  • the slip ring arrangement according to the invention is particularly suitable for external ring generators and cement or ore mills with a direct drive.
  • leaf springs 4 which are oriented approximately in the circumferential direction and point in one direction, are provided, each consisting of two spring leaves 4a, 4b in the example. These leaf springs are evenly distributed over the entire circumference of the outer wheel rim.
  • the ring-side ends of the leaf springs 4 are screwed onto the impeller 1 with welded or screwed-on blocks 5, which are provided with threaded holes 6.
  • Each spacer 7 has two axially extending bores 8, which are aligned with bores 9 of the same diameter in the two slip rings 2, 3.
  • Bolts 11 with an insulating tube 10 with threads at both bolt ends are inserted through the bores 8, 9.
  • Insulating disks 12 to 15 on both sides of each slip ring 2, 3 serve for electrical insulation of the slip rings 2, 3 with respect to the spacer elements 7 and thus the outer wheel rim 1.
  • the slip ring arrangement is braced by metal washers 16, disk spring assemblies 17, nuts 18 and fuses 19 on both bolt ends.
  • sealing arrangements 22, 23 are drawn on both sides of the slip rings, which seal the slip ring space from the outside.
  • slip rings 2, 3 together with insulating rings, spacer elements and leaf springs 4 and blocks 5 attached to them are preassembled.
  • the slip ring arrangement is then pushed onto the outer rim 1, if necessary aligned and centered with the aid of an assembly auxiliary device.
  • the blocks are welded together with the wheel rim 1.
  • the slip ring arrangement according to the invention is very rigid in the axial direction due to the leaf springs directed in the circumferential direction, has good centering even at different temperatures and can nevertheless follow thermal expansions freely.
  • the angle ⁇ which the free leaf spring parts enclose with the radial, is preferably between 45 ° and 90 °, in the limit case the leaf springs are oriented tangentially.
  • the upper limit i.e. the smallest angle value depends on the available space, but should always have a value that is different from zero.
  • the leaf springs 4 can also be clamped according to FIG. 4, where the two spring ends are connected to adjacent spacer elements 7; the leaf springs 4, however, are screwed to the blocks 5 in the middle section. This type of saving results in a substantially higher rigidity in the radial direction, but leads to an increased load on the leaf springs 4.
  • the leaf springs are arranged in the axial direction with otherwise the same structure.
  • the leaf springs 4 shaped analogously to FIG. 3 are screwed at both ends to blocks 5a, 5b, which in turn are screwed onto welded blocks 5a, 5b on the outer wheel rim 1 by means of screws 20.
  • the leaf springs 4 are screwed to the spacer 7.
  • FIG. 5 shows a modification of FIG. 1 with leaf springs 4 arranged in pairs in the circumferential direction, which are arranged on both sides of the slip rings and are screwed to blocks 5a, 5b on the outer wheel rim 1 analogously to FIG. 1.
  • the middle spacer element (item 7 in FIG. 7) is omitted and is replaced by a spacer disk 21.
  • the ends of the leaf springs 4 on the slip ring side are screwed to support elements 7a, 7b.

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  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

For the mechanical and thermal isolation of the slip rings (2) of the running wheel outer rim (1), which bears it, of an outer rim generator, leaf springs (4) are provided which run in the circumferential direction and are mounted at one end on the running wheel outer rim (1) and at the other end on carrying elements (7) which carry the slip rings (2). In this way, the slip rings can expand by more than 4 mm in diameter without their centricity and the stability of the anchoring being adversely affected. <IMAGE>

Description

Technisches GebietTechnical field

Die Erfindung bezieht sich auf eine Schleifringanordnung für rotierende elektrische Maschinen mit grossem Rotordurchmesser, insbesondere Hydrogeneratoren, wobei die paarig angeordneten Schleifringe an einer zylinderischen Mantelfläche des Rotors neben den Rotorspulen befestigt sind.The invention relates to a slip ring arrangement for rotating electrical machines with a large rotor diameter, in particular hydrogen generators, the paired slip rings being fastened to a cylindrical outer surface of the rotor next to the rotor coils.

Die Erfindung nimmt dabei Bezug auf einen Stand der Technik, wie er sich beispielsweise durch den Aussenkranzgenerator des östereichischen Kraftwerkes Weinzödl, geliefert von der Firma Elin-Union AG, ergibt.The invention relates to a state of the art, such as results from the outer ring generator of the Austrian power plant Weinzödl, supplied by the company Elin-Union AG.

Technologischer Hintergrund und Stand der TechnikTechnological background and state of the art

Bei grossen Wasserkraftmaschinen, insbesondere Aussenkranzgene­ratoren - von der Literatur häufig mit "STRAFLO"-Generatoren bezeichnet - ist der Generator nicht wie bei konventionellen Rohrturbinengeneratoren in einer vom Triebwasser umströmten Birne untergebracht, sondern der Generator ist um das Turbinen­laufrad konzentrisch angeordnet und liegt zur Gänze ausserhalb der Triebwasserführung.In the case of large hydropower machines, in particular external ring generators - often referred to in the literature as "STRAFLO" generators - the generator is not housed in a bulb surrounded by the driving water, as is the case with conventional tubular turbine generators, but the generator is arranged concentrically around the turbine impeller and is entirely outside of it Driving water flow.

Die Pole sind auf dem äusseren Ring des Laufradaussenkranzes der Turbine aufgeschraubt. Die Erregerstromzuleitung erfolgt über zwei einteilige Schleifringe, die unterwasserseitig am Aussenkranz angeflanscht sind. Zu diesem Zweck weist der Aus­senkranz eine flanschartige Erweiterung auf, an welche die bei­den Schleifringe mittels axial verlaufender Bolzen gegen den Aussenkranz und gegeneinander isoliert angeschraubt sind.The poles are screwed onto the outer ring of the turbine outer ring. The excitation current supply is via two one-piece slip rings that are flanged to the outer rim on the underwater side. For this purpose, the outer ring has a flange-like extension, to which the two slip rings are screwed by means of axially extending bolts against the outer ring and insulated from one another.

Aufgrund der hohen Temperaturdifferenzen zwischen Aussenkranz, der etwa die Temperatur des Triebwassers annimmt und den Schleifringen, deren Betriebstemperatur bis 70°C betragen kann, treten bei den heute üblichen Aussenkranzdurchmessern zwischen typisch 3 und 6 m enorme Wärmedehnungen auf, die abhängig vom Schleifringmaterial zwischen 2 mm (bei Stahlschleifringen) und 4mm (bei Bronzeschleifringen) liegen. An die Befestigung der Schleifringe am Aussenkranz des Rotors werden daher sehr hohe Anforderungen gestellt.Due to the high temperature differences between the outer ring, which approximately assumes the temperature of the driving water, and the slip rings, whose operating temperature can be up to 70 ° C, there are enormous thermal expansions of between 3 and 6 m, which are common today, depending on the slip ring material, between 2 mm (with steel slip rings) and 4mm (with bronze slip rings). Very high demands are therefore made on the attachment of the slip rings on the outer rim of the rotor.

Aehnliche Probleme ergeben sich bei Erz- und Zementmühlen, all­gemein Drehrohrofen mit Direktantrieb, wo die Temperaturdiffe­renzen noch erheblich höher sein können. Hinzu kommt, dass die Temperaturverteilung in Umfangsrichtung des Drehrohrs aufgrund der geringen Drehzahl und des Einsatzgutes ungleichmässig ist.Similar problems arise with ore and cement mills, generally direct-drive rotary kilns, where the temperature differences can be considerably higher. In addition, the temperature distribution in the circumferential direction of the rotary tube is uneven due to the low speed and the material to be used.

Kurze Darstellung der ErfindungBrief description of the invention

Ausgehend vom Bekannten liegt der Erfindung die Aufgabe zu­grunde, eine Schleifringanordnung für rotierende elektrische Maschinen mit grossen Rotordurchmessern anzugegeben, welche den unterschiedlichen Betriebsanforderungen, insbesondere den Wär­mebeanspruchungen, standhält, eine hervorragende Zentrizität zwischen Schleifring und Schleifringträger gewährleistet und darüber hinaus einfach und wirtschaftlich ist.Based on the known, the invention has for its object to provide a slip ring assembly for rotating electrical machines with large rotor diameters, which withstands the different operating requirements, especially the thermal stresses, ensures excellent centricity between slip ring and slip ring carrier and is also simple and economical.

Die Lösung dieser Aufgabe ist erfindungsgemäss dadurch gekenn­zeichnet, dass die Schleifringe über Federelemente an der Man­ telfläche des Rotors mittelbar oder unmittelbar befestigt sind, wobei die Federelemente gegenüber der Radialen in Axial- und/­oder Umfangsrichtung geneigt sind.The solution to this problem is characterized according to the invention in that the slip rings on spring elements on the man telfläche the rotor are attached indirectly or directly, the spring elements are inclined relative to the radial in the axial and / or circumferential direction.

Auf diese Weise sind die Schleifringe vom Rotor mechanisch und thermisch entkoppelt.In this way, the slip rings are mechanically and thermally decoupled from the rotor.

Die erfindungsgemässe Schleifringanordnung eigent sich insbe­sondere für Aussenkranzgeneratoren und Zement- oder Erzmühlen mit Direktantrieb.The slip ring arrangement according to the invention is particularly suitable for external ring generators and cement or ore mills with a direct drive.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

In der Zeichnung sind Ausführungsbeispiele der Erfindung veran­schaulicht; dabei zeigt

  • Fig. 1 einen teilweisen Radialschnitt durch den Rotor eines Aussenkranzgenerators unmittelbar neben den Schleif­ringen mit in Umfangsrichtung verlaufenden Blattfedern;
  • Fig. 2 einen Längsschnitt durch die Schleifringanordnung gemäss Fig. 1;
  • Fig. 3 eine Abwandlung von Fig. 1 mit symmetrisch einge­spannten Blattfedern;
  • Fig. 4 eine weitere Abwandlung von Fig. 1 mit in Rotorlängs­richtung verlaufenden Blattfedern;
  • Fig. 5 eine weitere Abwandlung von Fig. 1 mit paarig ange­ordneten, in Umfangsrichtung verlaufenden Blattfe­dern.
Exemplary embodiments of the invention are illustrated in the drawing; shows
  • 1 shows a partial radial section through the rotor of an outer ring generator directly next to the slip rings with leaf springs running in the circumferential direction;
  • FIG. 2 shows a longitudinal section through the slip ring arrangement according to FIG. 1;
  • Fig. 3 shows a modification of Fig. 1 with symmetrically clamped leaf springs;
  • FIG. 4 shows a further modification of FIG. 1 with leaf springs running in the longitudinal direction of the rotor;
  • Fig. 5 shows a further modification of Fig. 1 with paired, circumferential leaf springs.

Detaillierte Beschreibung der Erfindung anhand bevorzugter AusführungsbeispieleDetailed description of the invention using preferred exemplary embodiments

Auf dem Laufradaussenkranz 1 eines Aussenkranzgenerators sind paarig angeordnete Schleifringe 2,3 isoliert befestigt. Zur thermischen und mechanischen Entkopplung der Schleifringe 2,3 vom Laufradaussenkranz 1 sind annähernd in Umfangsrichtung aus­gerichtete und in eine Richtung weisende Blattfedern 4, im Bei­spielsfall je aus zwei Federblättern 4a,4b bestehend, vorgese­hen. Diese Blattfedern sind gleichmässig über den gesamten Um­fang des Laufradaussenkranzes verteilt. Die kranzseitigen Enden der Blattfedern 4 sind mit angeschweissten oder angeschraubten Klötzen 5, die mit Gewindebohrungen 6 versehen sind, auf das Laufrad 1 aufgeschraubt.On the outer wheel rim 1 of an outer rim generator, paired slip rings 2, 3 are fastened in isolation. For the thermal and mechanical decoupling of the slip rings 2, 3 from the impeller outer ring 1, leaf springs 4, which are oriented approximately in the circumferential direction and point in one direction, are provided, each consisting of two spring leaves 4a, 4b in the example. These leaf springs are evenly distributed over the entire circumference of the outer wheel rim. The ring-side ends of the leaf springs 4 are screwed onto the impeller 1 with welded or screwed-on blocks 5, which are provided with threaded holes 6.

Die schleifringseitigen Enden der Blattfedern 4 sind mit tra­pezförmigen Distanzelementen 7 verschraubt, welche in den Zwi­schenraum zwischen den beiden Schleifringen 2,3 hineinragen.The slip ring-side ends of the leaf springs 4 are screwed together with trapezoidal spacer elements 7, which protrude into the space between the two slip rings 2, 3.

Jedes Distanzelement 7 weist zwei axial verlaufende Bohrungen 8 auf, welche mit Bohrungen 9 gleichen Durchmessers in den beiden Schleifringen 2,3 fluchten. Durch die Bohrungen 8,9 sind mit einem Isolierrohr 10 versehene Bolzen 11 mit Gewinden an beiden Bolzenenden gesteckt. Isolierscheiben 12 bis 15 beidseits jedes Schleifrings 2,3 dienen zur elektrischen Isolation der Schleif­ringe 2,3 gegenüber den Distanzelementen 7 und damit des Lauf­radaussenkranzes 1. Die Verspannung der Schleifringanordnung erfolgt durch Metallscheiben 16, Tellerfederpaketen 17, Muttern 18 und Sicherungen 19 an beiden Bolzenenden.Each spacer 7 has two axially extending bores 8, which are aligned with bores 9 of the same diameter in the two slip rings 2, 3. Bolts 11 with an insulating tube 10 with threads at both bolt ends are inserted through the bores 8, 9. Insulating disks 12 to 15 on both sides of each slip ring 2, 3 serve for electrical insulation of the slip rings 2, 3 with respect to the spacer elements 7 and thus the outer wheel rim 1. The slip ring arrangement is braced by metal washers 16, disk spring assemblies 17, nuts 18 and fuses 19 on both bolt ends.

Aus Gründen der Vollständigkeit sind beidseits der Schleifringe Dichtungsanordnungen 22,23 eingezeichnet, welche den Schleif­ringraum gegenüber dem Äusseren abdichten.For the sake of completeness, sealing arrangements 22, 23 are drawn on both sides of the slip rings, which seal the slip ring space from the outside.

Die Montage der Schleifringanordnung gestaltet sich in groben Zügen wie folgt:The assembly of the slip ring arrangement is roughly as follows:

Ausserhalb der Maschine werden die Schleifringe 2,3 samt Iso­lierringen, Distanzelementen und daran befestigten Blattfedern 4 und Klötzen 5 vormontiert. Danach wird die Schleifringanord­nung auf den Aussenkranz 1 aufgeschoben, gegebenenfalls unter Zuhilfenahme einer Montage-Hilfsvorrichtung ausgerichtet und zentriert. Denach werden die Klötze samt dem Laufradkranz 1 verschweisst.Outside the machine, the slip rings 2, 3 together with insulating rings, spacer elements and leaf springs 4 and blocks 5 attached to them are preassembled. The slip ring arrangement is then pushed onto the outer rim 1, if necessary aligned and centered with the aid of an assembly auxiliary device. The blocks are welded together with the wheel rim 1.

Die erfindungsgemässe Schleifringanordnung ist aufgrund der in Umfangsrichtung gerichteten Blattfedern in Axialrichtung sehr steif, weist eine gute Zentrierung auch bei unterschiedlichen Temperaturen auf und kann gleichwohl Wärmedehnungen frei fol­gen.The slip ring arrangement according to the invention is very rigid in the axial direction due to the leaf springs directed in the circumferential direction, has good centering even at different temperatures and can nevertheless follow thermal expansions freely.

Der Winkel α, den die freien Blattfederteile mit der Radialen einschliessen, liegt vorzugsweise zwischen 45° und 90°, im Grenzfall sind demnach die Blattfedern tangential ausgerichtet. Die obere Grenze, d.h. der kleinste Winkelwert richtet sich nach den jeweiligen Platzverhältnissen, sollte jedoch stets einen von Null verschiedenen Wert aufweisen.The angle α, which the free leaf spring parts enclose with the radial, is preferably between 45 ° and 90 °, in the limit case the leaf springs are oriented tangentially. The upper limit, i.e. the smallest angle value depends on the available space, but should always have a value that is different from zero.

Anstelle einer Einspannung nach Fig. 1 können die Blattfedern 4 auch gemäss Fig. 4 eingespannt werden, wo jeweils die beiden Fe­derenden mit benachbarten Distanzelementen 7 verbunden sind; die Blattfedern 4 sind hingegen im mittleren Abschnitt mit den Klötzen 5 verschraubt. Diese Art der Einsparung ergibt eine we­sentlich höhere Steifigkeit in Radialrichtung, führt aber zu einer verstärken Belastung der Blattfedern 4.Instead of a clamping according to FIG. 1, the leaf springs 4 can also be clamped according to FIG. 4, where the two spring ends are connected to adjacent spacer elements 7; the leaf springs 4, however, are screwed to the blocks 5 in the middle section. This type of saving results in a substantially higher rigidity in the radial direction, but leads to an increased load on the leaf springs 4.

In der in Fig. 4 dargestellten Variante sind bei ansonsten gleichem Aufbau die Blattfedern in Axialrichtung angeordnet. Die analog Fig. 3 geformten Blattfedern 4 sind an den beiden Enden an Klötzen 5a,5b angeschraubt, die ihrerseits am Laufrad­aussenkranz 1 mittels Schrauben 20 auf angeschweisste Klötze 5a,5b geschraubt sind. Im mittigen Teil sind die Blattfedern 4 am Distanzstück 7 angeschraubt.In the variant shown in Fig. 4, the leaf springs are arranged in the axial direction with otherwise the same structure. The leaf springs 4 shaped analogously to FIG. 3 are screwed at both ends to blocks 5a, 5b, which in turn are screwed onto welded blocks 5a, 5b on the outer wheel rim 1 by means of screws 20. In the central part, the leaf springs 4 are screwed to the spacer 7.

Auch bei dieser Variante ist eine nur einseitige Einspannung analog Fig. 1 bzw. 2 möglich.In this variant too, only one-sided clamping analogous to FIGS. 1 and 2 is possible.

Fig. 5 schliesslich zeigt eine Abwandlung von Fig. 1 mit paarig angeordneten, in Umfangsrichtung verlaufenden Blattfedern 4, die beidseits der Schleifringe angeordnet und analog Fig. 1 an Klötzen 5a,5b am Laufradaussenkranz 1 angeschraubt sind. Dabei entfällt das mittlere Distanzelement (Pos. 7 in Fig. 7) und ist ersetzt durch eine Distanzscheibe 21. Die Schleifringseitigen Enden der Blattfedern 4 sind an Tragelementen 7a,7b ange­schraubt.Finally, FIG. 5 shows a modification of FIG. 1 with leaf springs 4 arranged in pairs in the circumferential direction, which are arranged on both sides of the slip rings and are screwed to blocks 5a, 5b on the outer wheel rim 1 analogously to FIG. 1. The middle spacer element (item 7 in FIG. 7) is omitted and is replaced by a spacer disk 21. The ends of the leaf springs 4 on the slip ring side are screwed to support elements 7a, 7b.

Bei allen Ausführungsformen ist es möglich, auf die Klötze 5 zu verzichten und die Blattfedern unmittelbar auf dem Laufradaus­senkranz 1 zu befestigen, z.B. aufzuschrauben.In all embodiments, it is possible to dispense with the blocks 5 and to fasten the leaf springs directly on the outer wheel rim 1, e.g. screw on.

Claims (5)

1. Schleifringanordnung für rotiertende elektrische Maschinen mit grossem Rotordurchmesser, insbesondere Hydrogenerato­ren, wobei die paarig angeordneten Schleifringe (2,3) an einer zylindrischen Mantelfläche (1) des Rotors neben den Rotorpolen befestigt sind, dadurch gekennzeichnet, dass die Schleifringe (2,3) über Federelemente (4) an der Man­telfläche (1) mittelbar oder unmittelbar befestigt sind, wobei die Federelemente (4) gegenüber der Radialen in Axial- und/oder Umfangsrichtung geneigt sind.1. Slip ring arrangement for rotating electrical machines with a large rotor diameter, in particular hydrogen generators, the paired slip rings (2, 3) being attached to a cylindrical outer surface (1) of the rotor next to the rotor poles, characterized in that the slip rings (2, 3) Are indirectly or directly attached to the lateral surface (1) via spring elements (4), the spring elements (4) being inclined in the axial and / or circumferential direction with respect to the radial. 2. Schleifringanordnung nach Anspruch 1, dadurch gekennzeich­net, dass die Federelemente (4) an ihren mantelseitigen Enden an der Mantelfläche (1), mit ihren schleifringseiti­gen Enden an Trag- und/oder Distanzelementen (7;7a,7b), welche zur Abstützung der Schleifringe (2,3) dienen, befe­stigt sind.2. Slip ring arrangement according to claim 1, characterized in that the spring elements (4) at their outer ends on the outer surface (1), with their slip ring ends on support and / or spacer elements (7; 7a, 7b), which support the Slip rings (2,3) are used, are attached. 3. Schleifringanordnung nach Anspruch 1, dadurch gekennzeich­net, dass die Federelemente (4) an beiden Enden an der Mantelfläche (1) und im mittigen Abschnitt an einem Trag- und/oder Distanzelement (7) befestigt sind, an welchen Di­stanzelementen (7) die Schleifringe (2,3) abgestützt sind.3. slip ring arrangement according to claim 1, characterized in that the spring elements (4) at both ends on the lateral surface (1) and in the central portion on a support and / or spacer element (7) are attached, to which spacer elements (7) Slip rings (2,3) are supported. 4. Schleifringanordnung nach Anspruch 2 oder 3, dadurch ge­kennzeichnet, dass die Federelemente (4) mit der Radialen einen Winkel (α) grösser als 45° einschliessen.4. slip ring arrangement according to claim 2 or 3, characterized in that the spring elements (4) with the radial form an angle (α) greater than 45 °. 5. Schleifringanordnung nach einem der Ansprüche 1 bis 4, da­durch gekennzeichnet, dass die Federelemente als ein- oder mehrlagige Blattfedern (4;4a,4b) ausgebildet sind.5. slip ring arrangement according to one of claims 1 to 4, characterized in that the spring elements are designed as single or multi-layer leaf springs (4; 4a, 4b).
EP89107651A 1988-06-01 1989-04-27 Slip ring arrangement for rotary electrical machines Withdrawn EP0344464A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2081/88A CH675326A5 (en) 1988-06-01 1988-06-01
CH2081/88 1988-06-01

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EP0344464A1 true EP0344464A1 (en) 1989-12-06

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EP89107651A Withdrawn EP0344464A1 (en) 1988-06-01 1989-04-27 Slip ring arrangement for rotary electrical machines

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EP (1) EP0344464A1 (en)
BR (1) BR8902513A (en)
CH (1) CH675326A5 (en)
NO (1) NO892005L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6469414B2 (en) * 2000-06-30 2002-10-22 General Electric Company Slip-ring mounting assembly for high-power rotary current collector system
US20120200194A1 (en) * 2009-08-13 2012-08-09 Alstom Hydro France Slip-ring arrangement for a rotating electrical machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429842A (en) * 1910-07-27 1911-10-02 Alsacienne Constr Meca Improvements in the construction of dynamo-electric machines
FR695639A (en) * 1929-08-21 1930-12-18 Const Electr & Mecaniques Als Method for capturing electric currents of limited duration, on rings or collectors with high peripheral speed
DE890986C (en) * 1944-06-01 1953-09-24 Fa.C.Conradty Carbon slip ring with discharge
GB1416142A (en) * 1972-06-24 1975-12-03 Lucas Electrical Co Ltd Slip ring assemblies

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429842A (en) * 1910-07-27 1911-10-02 Alsacienne Constr Meca Improvements in the construction of dynamo-electric machines
FR695639A (en) * 1929-08-21 1930-12-18 Const Electr & Mecaniques Als Method for capturing electric currents of limited duration, on rings or collectors with high peripheral speed
DE890986C (en) * 1944-06-01 1953-09-24 Fa.C.Conradty Carbon slip ring with discharge
GB1416142A (en) * 1972-06-24 1975-12-03 Lucas Electrical Co Ltd Slip ring assemblies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6469414B2 (en) * 2000-06-30 2002-10-22 General Electric Company Slip-ring mounting assembly for high-power rotary current collector system
US20120200194A1 (en) * 2009-08-13 2012-08-09 Alstom Hydro France Slip-ring arrangement for a rotating electrical machine
US8872406B2 (en) * 2009-08-13 2014-10-28 Alstom Renewable Technologies Slip-ring arrangement for a rotating electrical machine

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Publication number Publication date
NO892005D0 (en) 1989-05-18
NO892005L (en) 1989-12-04
CH675326A5 (en) 1990-09-14
BR8902513A (en) 1990-01-16

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