EP1999387A1 - Hydrodynamic plain bearing - Google Patents

Hydrodynamic plain bearing

Info

Publication number
EP1999387A1
EP1999387A1 EP07712290A EP07712290A EP1999387A1 EP 1999387 A1 EP1999387 A1 EP 1999387A1 EP 07712290 A EP07712290 A EP 07712290A EP 07712290 A EP07712290 A EP 07712290A EP 1999387 A1 EP1999387 A1 EP 1999387A1
Authority
EP
European Patent Office
Prior art keywords
pumping
plain bearing
bearing according
gap
support
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Withdrawn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
EP07712290A
Other languages
German (de)
French (fr)
Inventor
Axel Günter Albert FÜRST
Kamil Matyscak
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP1999387A1 publication Critical patent/EP1999387A1/en
Withdrawn legal-status Critical Current

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/108—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid with a plurality of elements forming the bearing surfaces, e.g. bearing pads
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1085—Channels or passages to recirculate the liquid in the bearing

Definitions

  • the present invention relates to the field of storage of rotating machinery, e.g. Hydro generators. It relates to a hydrodynamic sliding bearing according to the preamble of claim 1.
  • Rotors of large machines such as hydro generators are usually carried and guided by hydrodynamic plain bearings, as described for example in the document EP-A2-0 135 730. In these bearings, the axial and radial guidance is taken over by separate bearings of different designs.
  • a running ring (2) is provided in FIG. 1 therefor, which in the radial direction by guide bearing segments (4) and in axial direction is supported by support bearing segments (3).
  • the guide bearing segments (4) are equipped according to FIG. 2 of EP-A2-0 135 730 with a pumping bag or a pumping gap (13).
  • the lubricant collects in the pumping gap (13) and is pumped from there through a lubricant outflow channel (14) into an outflow bore (15) and from there into a lubricant circuit.
  • the object is solved by the entirety of the features of claim 1.
  • the invention is characterized in that the slide bearing is equipped with an integrated pumping device for pumping the lubricating oil in a circuit.
  • the pumping device is arranged laterally on one of the support segments, wherein in particular the pumping device is arranged in the direction of rotation on the front side of the support element.
  • the pumping means is formed separately from the support member and releasably secured to the support segment.
  • Another embodiment of the invention is characterized in that the pumping device is perpendicular to the axis of rotation adjacent to the raceway, and at the boundary between the top and the raceway forms a pumping gap, and that means are provided to collect the pumping gap in the gap and under pressure Remove lubricating oil laterally from the pumping device.
  • the means for discharging the lubricating oil comprise a arranged in the direction of rotation at the end of the pumping gap, extending in the radial direction, in particular over the width of the pumping gap, extending discharge channel, which communicates with a arranged in the interior of the pumping device collecting space, wherein the collecting space in radial direction, a discharge pipe is guided out of the pumping device to the outside.
  • the pumping means comprises a base body attachable to the support segment, on the upper side of which a cover plate adjoining the raceway is mounted, in the upper side of which a recess is made to form the pumping gap.
  • the cover plate is preferably detachably connected to the base body, in particular screwed.
  • the entire pumping device can also be an integral part of the support segment, without individual screwed parts.
  • the channels can be milled out in the segment body.
  • a first recess is provided in the base body at the end adjacent to the support segment, which forms the collecting space after being covered by the cover plate; at the end of the cover plate adjoining the support segment, a second recess is provided, which forms the discharge channel.
  • Figure 1 is a perspective view of the basic arrangement of a hydrodynamic sliding bearing, as it is suitable for carrying out the inventive solution.
  • FIG. 2 is a side view of a pump device according to a preferred embodiment of the invention in the plane G-G in FIG. 3;
  • FIG. 2 is a side view of a pump device according to a preferred embodiment of the invention in the plane G-G in FIG. 3;
  • FIG. 3 is a plan view from above of a support segment with screwed pumping device according to FIG. 2;
  • Fig. 4 shows the section through the arrangement of Fig. 3 in the plane E-E.
  • the invention relates to a support bearing assembly, as shown in FIG. 1 greatly simplified.
  • the sliding bearing 10 of Fig. 1 comprises a rotatable about a rotation axis 13 race 11, which rests in the axial direction on a plurality of ring segment-shaped support segments 12, of which in Fig. 1, only one is drawn. Between the bottom of the race 11 and the top of the support segment 12 is a bearing gap 14 which is filled with a lubricant film.
  • the assumed direction of rotation of the race 11 is indicated by the rotary arrow shown in FIG.
  • a pumping device 15 is attached, which cooperates with the raceway 11 and 11 unfolds a pumping action when rotating raceway, such as it has been described similarly for the guide bearing segment in the aforementioned EP-A2-0 135 730.
  • the pumping device 15 comprises a fastener on the support segment 12 Baren, cuboidal base body 16, on the upper side of which is adjacent to the raceway 11 cover plate 17 is mounted.
  • cover plate 17 In the top of the cover plate 17 is a extending in the direction of rotation, laterally limited depression introduced, which, when the cover plate 17 adjacent to the underside of the raceway 11, the desired pumping gap 18 is formed.
  • the cover plate 17 is detachably connected to the base body 16, in particular by means of the fastening screws 22 screwed.
  • a first recess is provided at the end adjacent to the support segment 12, which, after being covered by the cover plate 17, forms a collection chamber 19 which is bounded on one side by the support segment 12.
  • a second recess is provided which forms a discharge channel 20 which is bounded on one side by the support segment 12.
  • lubricating oil collects in the pumping gap 18 and is continuously discharged through the disposed at the end of the pumping gap 18 discharge channel 20 in the lying in the interior of the pumping device 15 collecting space 19.
  • a discharge pipe 21 which is guided in the radial direction through the main body 16 to the outside.
  • the pumped lubricating oil can be supplied to a cooling and / or filtering and subsequently returned to the storage area to form a closed circuit.
  • an external pump can be saved or dispensed with special pump segments.
  • the pumping device 15 can be easily retrofitted to existing support segments. By dividing the pumping device 15 in the base 16 and cover plate 17, the production is simplified. Overall, there are the following advantages: - Short construction; a total of fewer bearing parts; no external pumps needed; and higher operational safety.

Abstract

A hydrodynamic plain bearing comprises a rotor which is rotatable about a rotational axis and which is mounted in the axial direction on a plurality of support segments (12), wherein a lubricating oil film is generated in a bearing gap between the rotor and the support segments (12). In a plain bearing of said type, circulation of the lubricating oil is effected in a simple way in that the plain bearing is provided with an integrated pump device (15) for pumping the lubricating oil around in a circuit.

Description

HYDRODYNAMISCHES GLEITLAGER HYDRODYNAMIC SLIDE BEARING
TECHNISCHES GEBIETTECHNICAL AREA
Die vorliegende Erfindung bezieht sich auf das Gebiet der Lagerung von rotierenden Maschinen wie z.B. Hydrogeneratoren. Sie betrifft ein hydrodynamisches Gleitlager gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to the field of storage of rotating machinery, e.g. Hydro generators. It relates to a hydrodynamic sliding bearing according to the preamble of claim 1.
STAND DER TECHNIKSTATE OF THE ART
Rotoren grosser Maschinen wie z.B. Hydrogeneratoren werden in der Regel durch hydrodynamische Gleitlager getragen und geführt, wie dies beispielsweise in der Druckschrift EP-A2-0 135 730 beschrieben ist. Bei diesen Lagern wird die axiale und radiale Führung durch getrennte Lager unterschiedlicher Bauform übernommen. In der EP-A2-0 135 730 ist in der dortigen Fig. 1 dafür ein Laufring (2) vorgesehen, der in radialer Richtung durch Führungslagersegmente (4) und in axialer Richtung durch Traglagersegmenten (3) gelagert ist. Die Führungslagersegmente (4) sind gemäss Fig. 2 der EP-A2-0 135 730 mit einer Pumptasche bzw. einem Pumpspalt (13) ausgerüstet. Das Schmiermittel sammelt sich im Pumpspalt (13) und wird von dort durch einen Schmiermittelabflusskanal (14) in eine Abströmungsbohrung (15) gepumpt und gelangt von dort in einen Schmiermittelkreislauf.Rotors of large machines such as hydro generators are usually carried and guided by hydrodynamic plain bearings, as described for example in the document EP-A2-0 135 730. In these bearings, the axial and radial guidance is taken over by separate bearings of different designs. In EP-A2-0 135 730 a running ring (2) is provided in FIG. 1 therefor, which in the radial direction by guide bearing segments (4) and in axial direction is supported by support bearing segments (3). The guide bearing segments (4) are equipped according to FIG. 2 of EP-A2-0 135 730 with a pumping bag or a pumping gap (13). The lubricant collects in the pumping gap (13) and is pumped from there through a lubricant outflow channel (14) into an outflow bore (15) and from there into a lubricant circuit.
Normalerweise werden das Axial- und das Radiallager am gleichen Ort benötigt (siehe die EP-A2-0 135 730). Manchmal wird aber auch nur das axiale Traglager gebraucht. Als Öl- bzw. Schmiermittelpumpe müssen dann eine externe Pumpe oder reine Pumpsegmente ohne Radialführungsfunktion verwendet werden.Normally, the thrust and radial bearings are needed at the same location (see EP-A2-0 135 730). Sometimes, however, only the axial support bearing is needed. As an oil or lubricant pump then an external pump or pure pump segments without radial guidance function must be used.
DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION
Es ist Aufgabe der Erfindung, ein hydrodynamisches Gleitlager in Form eines axialen Traglagers zu schaffen, welches ohne externe Pumpeinrichtungen einen Schmiermittelkreislauf aufrechterhält.It is an object of the invention to provide a hydrodynamic sliding bearing in the form of an axial support bearing, which maintains a lubricant circuit without external pumping means.
Die Aufgabe wird durch die Gesamtheit der Merkmale des Anspruchs 1 gelöst. Die Erfindung zeichnet sich dadurch aus, dass das Gleitlager mit einer integrierten Pumpeinrichtung zum Umpumpen des Schmieröls in einem Kreislauf ausgestattet ist.The object is solved by the entirety of the features of claim 1. The invention is characterized in that the slide bearing is equipped with an integrated pumping device for pumping the lubricating oil in a circuit.
Gemäss einer Ausgestaltung der Erfindung ist die Pumpeinrichtung seitlich an einem der Tragsegmente angeordnet, wobei insbesondere die Pumpeinrichtung in Drehrichtung an der Vorderseite des Tragelements angeordnet.According to one embodiment of the invention, the pumping device is arranged laterally on one of the support segments, wherein in particular the pumping device is arranged in the direction of rotation on the front side of the support element.
Vorzugsweise ist die Pumpeinrichtung separat vom Tragelement ausgebildet und am Tragsegment lösbar befestigt. Eine andere Ausgestaltung der Erfindung ist dadurch gekennzeichnet, dass die Pumpeinrichtung senkrecht zur Rotationsachse an den Laufring angrenzt, und an der Grenze zwischen der Oberseite und dem Laufring einen Pumpspalt ausbildet, und dass Mittel vorgesehen sind, um das sich im Pumpspalt sammelnde und unter Druck stehende Schmieröl seitlich aus der Pumpeinrichtung abzuführen.Preferably, the pumping means is formed separately from the support member and releasably secured to the support segment. Another embodiment of the invention is characterized in that the pumping device is perpendicular to the axis of rotation adjacent to the raceway, and at the boundary between the top and the raceway forms a pumping gap, and that means are provided to collect the pumping gap in the gap and under pressure Remove lubricating oil laterally from the pumping device.
Vorzugsweise umfassen die Mittel zum Abführen des Schmieröls einen in Drehrichtung am Ende des Pumpspaltes angeordneten, sich in radialer Richtung, insbesondere sich über die Breite des Pumpspaltes, erstreckenden Abführkanal, welcher mit einem im Inneren der Pumpeinrichtung angeordneten Sammelraum in Verbindung steht, wobei vom Sammelraum in radialer Richtung ein Abführrohr aus der Pumpeinrichtung nach draussen geführt ist.Preferably, the means for discharging the lubricating oil comprise a arranged in the direction of rotation at the end of the pumping gap, extending in the radial direction, in particular over the width of the pumping gap, extending discharge channel, which communicates with a arranged in the interior of the pumping device collecting space, wherein the collecting space in radial direction, a discharge pipe is guided out of the pumping device to the outside.
Besonders vorteilhaft für Aufbau und Montage ist es, wenn die Pumpeinrichtung einen am Tragsegment befestigbaren Grundkörper umfasst, auf dessen Oberseite eine an den Laufring angrenzende Deckplatte angebracht ist, in deren Oberseite zur Bildung des Pumpspaltes eine Vertiefung eingebracht ist. Die Deckplatte ist vorzugsweise mit dem Grundkörper lösbar verbunden, insbesondere verschraubt.It is particularly advantageous for construction and assembly, when the pumping means comprises a base body attachable to the support segment, on the upper side of which a cover plate adjoining the raceway is mounted, in the upper side of which a recess is made to form the pumping gap. The cover plate is preferably detachably connected to the base body, in particular screwed.
Die ganze Pumpeinrichtung kann auch fester Bestandteil des Tragsegmentes sein, ohne einzelne eingeschraubte Teile. Die Kanäle können im Segmentkörper ausgefräst werden.The entire pumping device can also be an integral part of the support segment, without individual screwed parts. The channels can be milled out in the segment body.
Gemäss einer Weiterbildung der Erfindung ist im Grundkörper an dem an das Tragsegment angrenzenden Ende eine erste Ausnehmung vorgesehen, welche nach Abdeckung durch die Deckplatte den Sammelraum bildet; an dem an das Tragsegment angrenzenden Ende der Deckplatte ist eine zweite Ausnehmung vorgesehen, welche den Abführkanal bildet. KURZE ERLÄUTERUNG DER FIGURENAccording to a development of the invention, a first recess is provided in the base body at the end adjacent to the support segment, which forms the collecting space after being covered by the cover plate; at the end of the cover plate adjoining the support segment, a second recess is provided, which forms the discharge channel. BRIEF EXPLANATION OF THE FIGURES
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert werden. Es zeigenThe invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it
Fig. 1 in einer perspektivischen Ansicht die Grundanordnung eines hydrodynamischen Gleitlagers, wie es zur Ausführung der erfindungsgemässen Lösung geeignet ist;Figure 1 is a perspective view of the basic arrangement of a hydrodynamic sliding bearing, as it is suitable for carrying out the inventive solution.
Fig. 2 die Seitenansicht einer Pumpeinrichtung gemäss einem bevorzugten Ausführungsbeispiel der Erfindung in der Ebene G-G in Fig. 3;FIG. 2 is a side view of a pump device according to a preferred embodiment of the invention in the plane G-G in FIG. 3; FIG.
Fig. 3 die Draufsicht von oben auf ein Tragsegment mit angeschraubter Pumpeinrichtung gemäss Fig. 2; und3 is a plan view from above of a support segment with screwed pumping device according to FIG. 2; and
Fig. 4 den Schnitt durch die Anordnung aus Fig. 3 in der Ebene E-E.Fig. 4 shows the section through the arrangement of Fig. 3 in the plane E-E.
WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION
Die Erfindung geht aus von einer Traglageranordnung, wie sie in Fig. 1 stark vereinfacht dargestellt ist. Das Gleitlager 10 der Fig. 1 umfasst einen um eine Rotationsachse 13 drehbaren Laufring 11 , der in axialer Richtung auf einer Mehrzahl von ringsegmentförmigen Tragsegmenten 12 ruht, von denen in Fig. 1 nur eines eingezeichnet ist. Zwischen der Unterseite des Laufrings 11 und der Oberseite des Tragsegments 12 befindet sich ein Lagerspalt 14, der mit einem Schmiermittelfilm ausgefüllt ist. Die angenommene Drehrichtung des Laufrings 11 ist durch den in Fig. 1 eingezeichneten Drehpfeil angezeigt.The invention relates to a support bearing assembly, as shown in FIG. 1 greatly simplified. The sliding bearing 10 of Fig. 1 comprises a rotatable about a rotation axis 13 race 11, which rests in the axial direction on a plurality of ring segment-shaped support segments 12, of which in Fig. 1, only one is drawn. Between the bottom of the race 11 and the top of the support segment 12 is a bearing gap 14 which is filled with a lubricant film. The assumed direction of rotation of the race 11 is indicated by the rotary arrow shown in FIG.
Um für das axiale Gleitlager 10 auf einfache Weise ein platzsparendes, autonomes Pumpsystem für das Schmiermittel einzurichten, um die Zirkulation auch für einen extremen Kreislauf ohne weiteren Antrieb sicher zu stellen, wird gemäss Fig. 3 und 4 am in Drehrichtung vorderen Ende des Tragsegments 12 seitlich eine Pumpeinrichtung 15 angebaut, die mit dem Laufring 11 zusammenwirkt und bei sich drehendem Laufring 11 eine Pumpwirkung entfaltet, wie sie ähnlich für das Führungslagersegment in der eingangs genannten EP-A2-0 135 730 beschreiben worden ist.In order to set up a space-saving, autonomous pumping system for the lubricant in a simple manner for the axial slide bearing 10 to the circulation Also for an extreme cycle without further drive to ensure, according to Fig. 3 and 4 at the front end of the support segment 12 in the direction of rotation laterally a pumping device 15 is attached, which cooperates with the raceway 11 and 11 unfolds a pumping action when rotating raceway, such as it has been described similarly for the guide bearing segment in the aforementioned EP-A2-0 135 730.
Die Pumpeinrichtung 15 umfasst einen am Tragsegment 12 befestig baren, quaderförmigen Grundkörper 16, auf dessen Oberseite eine an den Laufring 11 angrenzende Deckplatte 17 angebracht ist. In die Oberseite der Deckplatte 17 ist eine sich in Drehrichtung erstreckende, seitlich begrenzte Vertiefung eingebracht, die, wenn die Deckplatte 17 an die Unterseite des Laufrings 11 angrenzt, den gewünschten Pumpspalt 18 bildet. Die Deckplatte 17 ist mit dem Grundkörper 16 lösbar verbunden, insbesondere mittels der Befestigungsschrauben 22 verschraubt.The pumping device 15 comprises a fastener on the support segment 12 Baren, cuboidal base body 16, on the upper side of which is adjacent to the raceway 11 cover plate 17 is mounted. In the top of the cover plate 17 is a extending in the direction of rotation, laterally limited depression introduced, which, when the cover plate 17 adjacent to the underside of the raceway 11, the desired pumping gap 18 is formed. The cover plate 17 is detachably connected to the base body 16, in particular by means of the fastening screws 22 screwed.
Im Grundkörper 16 ist an dem an das Tragsegment 12 angrenzenden Ende eine erste Ausnehmung vorgesehen, welche nach Abdeckung durch die Deckplatte 17 einen Sammelraum 19 bildet, der auf einer Seite durch das Tragsegment 12 begrenzt ist. An dem an das Tragsegment 12 angrenzenden Ende der Deckplatte 17 ist eine zweite Ausnehmung vorgesehen, die einen Abführkanal 20 bildet, der auf einer Seite durch das Tragsegment 12 begrenzt ist. Der Grundkörper 16 und damit die ganze Pumpeinrichtung 15 ist mittels zweier Befestigungsschrauben 23 am Tragsegment 12 angeschraubt.In the base body 16, a first recess is provided at the end adjacent to the support segment 12, which, after being covered by the cover plate 17, forms a collection chamber 19 which is bounded on one side by the support segment 12. At the adjacent to the support segment 12 end of the cover plate 17, a second recess is provided which forms a discharge channel 20 which is bounded on one side by the support segment 12. The main body 16 and thus the entire pumping device 15 is screwed by means of two fastening screws 23 on the support segment 12.
Bei drehendem Laufring 11 sammelt sich Schmieröl im Pumpspalt 18 und wird fortlaufend durch den am Ende des Pumpspaltes 18 angeordneten Abführkanal 20 in den im Inneren der Pumpeinrichtung 15 liegenden Sammelraum 19 abgeführt. In den Sammelraum 19 ragt ein Abführrohr 21 hinein, das in radialer Richtung durch den Grundkörper 16 nach aussen geführt ist. Durch das Abführrohr 21 kann das gepumpte Schmieröl einer Kühlung und/oder Filterung zugeführt und anschliessend unter Bildung eines geschlossenen Kreislaufs in den Lagerbereich zurückgeführt werden.When rotating raceway 11 lubricating oil collects in the pumping gap 18 and is continuously discharged through the disposed at the end of the pumping gap 18 discharge channel 20 in the lying in the interior of the pumping device 15 collecting space 19. Into the collecting space 19 protrudes a discharge pipe 21, which is guided in the radial direction through the main body 16 to the outside. Through the discharge pipe 21, the pumped lubricating oil can be supplied to a cooling and / or filtering and subsequently returned to the storage area to form a closed circuit.
Mit der Kombination des Tragsegmentes 12 und der daran angeflanschten Pumpeinrichtung 15 kann eine externe Pumpe eingespart bzw. auf spezielle Pumpsegmente verzichtet werden. Die Pumpeinrichtung 15 kann an bereits vorhandenen Tragsegmenten leicht nachgerüstet werden. Durch die Aufteilung der Pumpeinrichtung 15 in Grundkörper 16 und Deckplatte 17 wird die Herstellung vereinfacht. Insgesamt ergeben sich die folgenden Vorteile: - Kurze Bauweise; insgesamt weniger Lagerteile; keine externen Pumpen nötig; und höhere Betriebssicherheit.With the combination of the support segment 12 and the pumping device 15 flanged thereto, an external pump can be saved or dispensed with special pump segments. The pumping device 15 can be easily retrofitted to existing support segments. By dividing the pumping device 15 in the base 16 and cover plate 17, the production is simplified. Overall, there are the following advantages: - Short construction; a total of fewer bearing parts; no external pumps needed; and higher operational safety.
BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS
10 Gleitlager (hydrodynamisch)10 plain bearings (hydrodynamic)
11 Lauf ring11 race ring
12 Tragsegment12 support segment
13 Rotationsachse13 rotation axis
14 Lagerspalt14 bearing gap
15 Pumpeinrichtung15 pumping device
16 Grundkörper16 basic body
17 Deckplatte17 cover plate
18 Pumpspalt18 pump gap
19 Sammelraum19 collection room
20 Abführkanal20 discharge channel
21 Abführrohr21 discharge pipe
22,23 Befestigungsschraube 22.23 fixing screw

Claims

PATENTANSPRÜCHE
1. Hydrodynamisches Gleitlager (10), umfassend einen um eine Rotationsachse (13) drehbaren Laufring (11 ), welcher in axialer Richtung auf einer Mehrzahl von Tragsegmenten (12) gelagert ist, wobei sich zwischen dem Laufring (11 ) und den Tragsegmenten (12) in einem Lagerspalt (14) ein Schmierölfilm ausbildet, dadurch gekennzeichnet, dass das Gleitlager (10) mit einer integrierten Pumpeinrichtung (15) zum Umpumpen des Schmieröls in einem Kreislauf ausgestattet ist.1. A hydrodynamic sliding bearing (10), comprising a about a rotational axis (13) rotatable race (11) which is mounted in the axial direction on a plurality of support segments (12), wherein between the raceway (11) and the support segments (12 ) in a bearing gap (14) forms a lubricating oil film, characterized in that the sliding bearing (10) is equipped with an integrated pumping means (15) for circulating the lubricating oil in a circuit.
2. Gleitlager nach Anspruch 1 , dadurch gekennzeichnet, dass die Pumpeinrichtung (15) seitlich an einem der Tragsegmente (12) angeordnet ist.2. plain bearing according to claim 1, characterized in that the pumping means (15) is arranged laterally on one of the support segments (12).
3. Gleitlager nach Anspruch 2, dadurch gekennzeichnet, dass die3. plain bearing according to claim 2, characterized in that the
Pumpeinrichtung (15) in Drehrichtung an der Vorderseite des Tragelements (12) angeordnet ist.Pumping device (15) is arranged in the direction of rotation on the front side of the support element (12).
4. Gleitlager nach Anspruch 3, dadurch gekennzeichnet, dass die Pumpeinrichtung (15) separat vom Tragelement (12) ausgebildet und am4. plain bearing according to claim 3, characterized in that the pumping means (15) formed separately from the support element (12) and on
Tragsegment (12) lösbar befestigt ist.Supporting segment (12) is releasably attached.
5. Gleitlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Pumpeinrichtung (15) mit der Oberseite an den Laufring (11 ) angrenzt, und an der Grenze zwischen der Oberseite und dem Laufring (11 ) einen5. plain bearing according to one of claims 1 to 4, characterized in that the pumping means (15) with the upper side adjacent to the raceway (11), and at the boundary between the upper side and the raceway (11) a
Pumpspalt (18) ausbildet, und dass Mittel (19, 20, 21 ) vorgesehen sind, um das sich im Pumpspalt (18) sammelnde und unter Druck stehende Schmieröl seitlich aus der Pumpeinrichtung (15) abzuführen.Pumping gap (18) is formed, and that means (19, 20, 21) are provided to the side in the pumping gap (18) collecting and pressurized lubricating oil from the pumping device (15) dissipate.
6. Gleitlager nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel zum Abführen des Schmieröls einen in Drehrichtung am Ende des Pumpspaltes (18) angeordneten, sich in radialer Richtung, insbesondere sich über die Breite des Pumpspaltes (18), erstreckenden Abführkanal (20) umfassen, welcher mit einem im Inneren der Pumpeinrichtung (15) angeordneten Sammelraum (19) in Verbindung steht, und dass vom Sammelraum (19) in radialer Richtung ein Abführrohr aus der Pumpeinrichtung (15) nach draussen geführt ist.6. plain bearing according to claim 5, characterized in that the means for discharging the lubricating oil arranged in a rotational direction at the end of the pumping gap (18), in the radial direction, in particular over the width comprising the pumping gap (18), extending discharge channel (20), which communicates with a collecting chamber (19) arranged in the interior of the pumping device (15), and in that a discharge pipe from the pumping device (15) is provided in the radial direction from the collecting chamber (19) out to the outside.
7. Gleitlager nach Anspruch 6, dadurch gekennzeichnet, dass die Pumpeinrichtung (15) einen am Tragsegment (12) befestigbaren Grundkörper (16) umfasst, auf dessen Oberseite eine an den Laufring (11 ) angrenzende Deckplatte (17) angebracht ist, in deren Oberseite zur Bildung des Pumpspaltes (18) eine Vertiefung eingebracht ist.7. plain bearing according to claim 6, characterized in that the pumping means (15) comprises a support member (12) attachable base body (16) on whose upper side to the raceway (11) adjacent cover plate (17) is mounted in the top to form the pumping gap (18) has a depression is introduced.
8. Gleitlager nach Anspruch 7, dadurch gekennzeichnet, dass die Deckplatte (17) mit dem Grundkörper (16) lösbar verbunden, insbesondere verschraubt ist.8. plain bearing according to claim 7, characterized in that the cover plate (17) releasably connected to the base body (16), in particular screwed.
9. Gleitlager nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass im Grundkörper (16) an dem an das Tragsegment (12) angrenzenden Ende eine erste Ausnehmung (19) vorgesehen ist, welche nach Abdeckung durch die Deckplatte (17) den Sammelraum (19) bildet, und dass an dem an das Tragsegment (12) angrenzenden Ende der Deckplatte (17) eine zweite Ausnehmung (20) vorgesehen ist, welche den Abführkanal (20) bildet. 9. plain bearing according to claim 7 or 8, characterized in that in the base body (16) on the to the support segment (12) adjacent end a first recess (19) is provided, which after covering by the cover plate (17) the collecting space (19 ), and in that at the end of the cover plate (17) adjoining the support segment (12) a second recess (20) is provided which forms the discharge channel (20).
EP07712290A 2006-03-28 2007-02-23 Hydrodynamic plain bearing Withdrawn EP1999387A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4932006 2006-03-28
PCT/EP2007/051741 WO2007110287A1 (en) 2006-03-28 2007-02-23 Hydrodynamic plain bearing

Publications (1)

Publication Number Publication Date
EP1999387A1 true EP1999387A1 (en) 2008-12-10

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ID=37056480

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Application Number Title Priority Date Filing Date
EP07712290A Withdrawn EP1999387A1 (en) 2006-03-28 2007-02-23 Hydrodynamic plain bearing

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US (1) US7641392B2 (en)
EP (1) EP1999387A1 (en)
JP (1) JP2009531621A (en)
CN (1) CN101432534B (en)
CA (1) CA2647491A1 (en)
WO (1) WO2007110287A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3176450B1 (en) 2015-12-03 2018-09-26 Flender-Graffenstaden S.A.S. Hydrostatic bearing with hydrodynamic function
AT525459B9 (en) 2022-02-10 2023-06-15 Miba Gleitlager Austria Gmbh plain bearing

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Publication number Priority date Publication date Assignee Title
US2168345A (en) * 1934-08-24 1939-08-08 Kingsbury Machine Works Inc High speed thrust bearing
US2168343A (en) * 1937-02-24 1939-08-08 Kingsbury Machine Works Inc Lubricating means for thrust bearings
GB720816A (en) * 1952-03-18 1954-12-29 Gen Electric Canada Improvements in and relating to thrust bearings
DE1400438B1 (en) * 1960-05-20 1970-05-14 Siemens Ag Self-pumping thrust bearing for electrical machines with vertical shaft, especially for hydroelectric generators
US4077682A (en) 1976-08-24 1978-03-07 Waukesha Bearings Corporation Large thrust bearing with lubrication in the spaces between pads
DE3141059A1 (en) * 1981-10-13 1983-04-28 Siemens AG, 1000 Berlin und 8000 München SELF-PUMPING TRACK BEARING FOR ELECTRICAL MACHINES WITH VERTICAL SHAFT, ESPECIALLY FOR HYDROPOWER GENERATORS
CH651362A5 (en) 1983-08-31 1985-09-13 Bbc Brown Boveri & Cie SELF-PUMPING HYDRODYNAMIC SLIDING BEARING.
CH672666A5 (en) * 1986-11-27 1989-12-15 Bbc Brown Boveri & Cie
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US6966700B2 (en) 2000-06-23 2005-11-22 Gleitlagertechnik Weissbacher Gmbh Hydrodynamic plain bearing and method of lubricating and cooling the bearing

Non-Patent Citations (1)

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Title
See references of WO2007110287A1 *

Also Published As

Publication number Publication date
US20090034891A1 (en) 2009-02-05
US7641392B2 (en) 2010-01-05
CN101432534B (en) 2011-05-11
WO2007110287A1 (en) 2007-10-04
CA2647491A1 (en) 2007-10-04
JP2009531621A (en) 2009-09-03
CN101432534A (en) 2009-05-13

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