EP0344464A1 - Schleifringanordnung für rotierende elektrische Maschinen - Google Patents

Schleifringanordnung für rotierende elektrische Maschinen 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
Authority
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Withdrawn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
Other languages
German (de)
English (en)
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
Original Assignee
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/de
Withdrawn legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP89107651A 1988-06-01 1989-04-27 Schleifringanordnung für rotierende elektrische Maschinen Withdrawn EP0344464A1 (de)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
EP0344464A1 true EP0344464A1 (de) 1989-12-06

Family

ID=4225461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107651A Withdrawn EP0344464A1 (de) 1988-06-01 1989-04-27 Schleifringanordnung für rotierende elektrische Maschinen

Country Status (4)

Country Link
EP (1) EP0344464A1 (enrdf_load_stackoverflow)
BR (1) BR8902513A (enrdf_load_stackoverflow)
CH (1) CH675326A5 (enrdf_load_stackoverflow)
NO (1) NO892005L (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2166224C2 (ru) * 1997-06-19 2001-04-27 Лианозовский электромеханический завод Дисковый токосъемник
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 (fr) * 1910-07-27 1911-10-02 Alsacienne Constr Meca Perfectionnements à la construction des machines dynamo-électriques
FR695639A (fr) * 1929-08-21 1930-12-18 Const Electr & Mecaniques Als Procédé de captation de courants électriques de durée limitée, sur des bagues ou collecteurs à grande vitessa périphérique
DE890986C (de) * 1944-06-01 1953-09-24 Fa.C.Conradty Kohleschleifring mit Ableitung
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 (fr) * 1910-07-27 1911-10-02 Alsacienne Constr Meca Perfectionnements à la construction des machines dynamo-électriques
FR695639A (fr) * 1929-08-21 1930-12-18 Const Electr & Mecaniques Als Procédé de captation de courants électriques de durée limitée, sur des bagues ou collecteurs à grande vitessa périphérique
DE890986C (de) * 1944-06-01 1953-09-24 Fa.C.Conradty Kohleschleifring mit Ableitung
GB1416142A (en) * 1972-06-24 1975-12-03 Lucas Electrical Co Ltd Slip ring assemblies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2166224C2 (ru) * 1997-06-19 2001-04-27 Лианозовский электромеханический завод Дисковый токосъемник
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

Also Published As

Publication number Publication date
NO892005D0 (no) 1989-05-18
CH675326A5 (enrdf_load_stackoverflow) 1990-09-14
BR8902513A (pt) 1990-01-16
NO892005L (no) 1989-12-04

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