US10385830B2 - Compound main bearing arrangement for a wind turbine - Google Patents

Compound main bearing arrangement for a wind turbine Download PDF

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Publication number
US10385830B2
US10385830B2 US15/649,734 US201715649734A US10385830B2 US 10385830 B2 US10385830 B2 US 10385830B2 US 201715649734 A US201715649734 A US 201715649734A US 10385830 B2 US10385830 B2 US 10385830B2
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Prior art keywords
bearings
rotatable
axial thrust
wind turbine
raceway
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Application number
US15/649,734
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US20190017496A1 (en
Inventor
Ian David Wilson
Edward Lee McGrath
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GE Infrastructure Technology LLC
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General Electric Co
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Priority to US15/649,734 priority Critical patent/US10385830B2/en
Assigned to GENERAL ELECTRIC COMPANY reassignment GENERAL ELECTRIC COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MCGRATH, EDWARD LEE, WILSON, IAN DAVID
Priority to ES18181922T priority patent/ES2906786T3/es
Priority to EP18181922.8A priority patent/EP3428448B1/en
Priority to DK18181922.8T priority patent/DK3428448T3/da
Publication of US20190017496A1 publication Critical patent/US20190017496A1/en
Application granted granted Critical
Publication of US10385830B2 publication Critical patent/US10385830B2/en
Assigned to GE INFRASTRUCTURE TECHNOLOGY LLC reassignment GE INFRASTRUCTURE TECHNOLOGY LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GENERAL ELECTRIC COMPANY
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/80—Arrangement of components within nacelles or towers
    • F03D80/88—Arrangement of components within nacelles or towers of mechanical components
    • 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
    • F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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
    • F16C43/00—Assembling bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F05B2240/52—Axial thrust bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F05B2240/54—Radial 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/65—Gear shifting, change speed gear, gear box
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present subject matter relates generally to wind turbines and, more particularly, to compound main bearing arrangements for rotatable main shafts of wind turbines.
  • a wind turbine includes a tower, a nacelle mounted on the tower, and a rotor coupled to the nacelle.
  • the rotor generally includes a rotatable hub and a plurality of rotor blades coupled to and extending outwardly from the hub. Each rotor blade may be spaced about the hub so as to facilitate rotating the rotor to enable kinetic energy to be converted into usable mechanical energy, which may then be transmitted to an electric generator disposed within the nacelle for the production of electrical energy.
  • a gearbox is used to drive the electric generator in response to rotation of the rotor.
  • the gearbox may be configured to convert a low speed, high torque input provided by the rotor to a high speed, low torque output that may drive the electric generator.
  • a wind turbine typically includes many bearings that provide relative movement between adjacent parts in a relatively efficient, low-friction manner.
  • a “main shaft” extends from the rotor and into the nacelle and is supported by one or more “main bearings.”
  • the gearbox in the nacelle that steps up the angular speed of the main shaft includes several bearings.
  • the yaw control system that rotates the nacelle relative to the tower to turn the rotor into/out of the wind, and the pitch control system that rotates the blades about their longitudinal axis also include various bearings that allow for enhanced operation of the wind turbine.
  • these main bearings are configured as roller element bearings characterized by having a structural element (e.g., a ball bearing) disposed between the two components which are moving relative to one another.
  • Roller element bearings fail for any number of reasons, but ultimately their life is limited by surface fatigue and wear.
  • Such limited-life components require regular maintenance so as to avoid larger scale failure modes.
  • the replacement parts and maintenance for such limited-life components increase the overall costs of operating a wind turbine. Accordingly, wind turbine and bearing manufacturers strive for improved or alternate designs that extend the operating life of the bearings.
  • Journal bearings are generally known in the art as having a long operating life. The main reason for this is that, unlike roller element bearings, journal bearings do not have any structural element disposed between the two relative moving components, but instead have only a fluid film disposed therebetween. Thus, the wear and fatigue issues associated with roller elements, as well as the costs associated with their replacement and maintenance, may be avoided. Consequently, journal bearings appear to provide an attractive alternative to roller element bearings. Additionally, journal bearings are designed to eliminate surface-to-surface contact and thus operate with even lower friction, which may further increase efficiency.
  • roller element bearings Due to the unpredictability of the wind, start-up and shut-downs that occur with wind turbines, and the resultant range of operating conditions, manufacturers have traditionally relied on roller element bearings.
  • roller element bearings alone are sometimes insufficient for wind turbines that are subject to large bending loads caused by varying wind speeds and directions around the rotor swept area. These bending loads are transferred to the rotor shaft and reacted through the rotor main bearings.
  • the bending loads are more dominant than the other shear and axial loads and are typically reacted to the static main frame through a pair of axially spaced predominantly radially loaded bearings. When the axial spacing is short the bearings are highly loaded and expensive. When they are spaced apart they are less expensive but require a more expensive longer main shaft.
  • journal bearings optionally in combination with roller element bearings, in a wind turbine compound main bearing that is simple, small, and compact configuration and can stably support radial loads and axial loads as well as increase the operating life of the bearings and decrease the costs associated with replacement and maintenance.
  • a drive train of a wind turbine having a rotatable hub, a gearbox, a rotatable rotor shaft extending between the rotatable hub and the gearbox, and a main bearing assembly supporting the rotatable rotor shaft, the main bearing assembly having a main bearing housing enclosing one or more compound bearings, each of the one or more compound bearings having at least two axial thrust bearings and a radial bearing.
  • a wind turbine having a tower; a nacelle mounted atop the tower; a generator and bearing pedestal coupled to a main frame within the nacelle; a gearbox coupled to the generator via a generator shaft; a rotatable hub; a rotatable rotor shaft extending between the rotatable hub and the gearbox; and a main bearing assembly coupled with the bearing pedestal and supporting the rotatable rotor shaft, the main bearing assembly having a main bearing housing enclosing one or more compound bearings, each of the one or more compound bearings having at least two axial thrust bearings and a radial bearing.
  • FIG. 1 illustrates a perspective view of one embodiment of a wind turbine of conventional construction
  • FIG. 2 illustrates a perspective, interior view of one embodiment of a nacelle of a wind turbine
  • FIG. 3 is a schematic of the components and loading on an exemplary compound main bearing assembly
  • FIG. 4 is a perspective of an exemplary compound main bearing assembly
  • FIG. 5 is a perspective of an exemplary compound main bearing assembly showing tilt pad axial journal bearings.
  • the present subject matter discloses a compound bearing arrangement to handle loads that were previously reacted to the main frame through a pair of axially spaced predominantly radially loaded bearings.
  • the bearings When the axial spacing between the pair of bearings is short, the bearings are highly loaded and expensive. When they are spaced apart they are less expensive but require a more expensive longer shaft. If the bearings have a very short axial spacing but are larger diameter the predominant reaction load in the bearings is in the axial direction so the moments can be reacted by axial bearings which, although larger in diameter, can be more compact and hence less expensive.
  • the radial loads vertical and lateral
  • the radial loads are typically much smaller and can be reacted by a smaller inexpensive radial bearing.
  • FIG. 1 illustrates a perspective view of one embodiment of a wind turbine 10 of conventional construction.
  • the wind turbine 10 includes a tower 12 extending from a support surface 14 , a nacelle 16 mounted on the tower 12 , and a rotor 18 coupled to the nacelle 16 .
  • the rotor 18 includes a rotatable hub 20 and at least one rotor blade 22 coupled to and extending outwardly from the hub 20 .
  • the rotor 18 includes three rotor blades 22 .
  • the rotor 18 may include more or less than three rotor blades 22 .
  • Each rotor blade 22 may be spaced about the hub 20 to facilitate rotating the rotor 18 to enable kinetic energy to be transferred from the wind into usable mechanical energy, and subsequently, electrical energy.
  • the hub 20 may be rotatably coupled to an electric generator 24 ( FIG. 2 ) positioned within the nacelle 16 to permit electrical energy to be produced.
  • a generator 24 may be disposed within the nacelle 16 .
  • the generator 24 may be coupled to the rotor 18 of the wind turbine 10 for producing electrical power from the rotational energy generated by the rotor 18 .
  • the rotor 18 may include a rotor shaft 32 coupled to the hub 20 for rotation therewith.
  • the rotor shaft 32 may, in turn, be rotatably coupled to a generator shaft 34 , sometimes referred to as the high speed shaft (HSS), of the generator 24 through a gearbox 36 having a gearbox output shaft.
  • HSS high speed shaft
  • the rotor shaft 32 may provide a low speed, high torque input to the gearbox 36 in response to rotation of the rotor blades 22 and the hub 20 .
  • the gearbox 36 may then be configured to convert the low speed, high torque input to a high speed, low torque output to drive the generator shaft 34 (HSS), and thus, the generator 24 .
  • HSS generator shaft 34
  • Main bearings 40 are housed in a main bearing assembly 48 that is supported by a main bearing pedestal 42 attached to the main frame 44 of the wind turbine with a main bearing housing 46 enclosing the main bearings 40 .
  • the main bearings 40 can be configured to react to loading as shown in FIG. 3 , where the axial loads 50 are imposed on a pair of axial thrust bearings 52 , 54 and the radial loads 56 are imposed on a radial bearing 58 .
  • This main bearing 40 arrangement is referred to as a compound bearing 60 , herein.
  • main bearing assembly 48 can have a main bearing housing 46 (not shown) that houses the compound bearing 60 and is further shown in FIGS. 4 and 5 as a three-row structure with the radial bearing pad 62 positioned at right angles (90 degrees) from the axial bearing pads 64 .
  • the axial bearing pads 64 can be adjacent a static spacer 80 that is removable to enable access and assembly of the radial bearing 58 .
  • the radial bearing pad 62 for the radial bearing 58 can be disposed circumferentially around the inner surface 66 a fixed raceway annulus 70 .
  • the fixed raceway annulus 70 can be coupled to the main bearing housing 46 .
  • the axial thrust bearing pads (at least two rows) for the axial thrust bearings 52 , 54 can be disposed circumferentially around the rotatable rotor shaft 32 on opposing sides of the fixed raceway annulus 70 .
  • the axial thrust bearings 52 , 54 can extend in the radial direction and be disposed on opposing first and second radial surfaces 67 , 68 of the same fixed raceway annulus 70 .
  • Rotatable raceway components 72 can be attached to rotor shaft 32 having a removable retainer flange 76 that retains the compound bearing 60 inside the main bearing assembly 48 , yet allows removal of the compound bearing 60 .
  • the one or more compound bearings 60 can have rotatable raceway components 72 disposed adjacent the at least two axial thrust bearings 52 , 54 and the radial bearing 58 , with the rotatable raceway components configured as the inner radial raceway surface and axial exterior raceway surface.
  • the rotor shaft 32 can be removably coupled to the rotatable hub 20 via a shaft flange 74 to the opposing end of rotor shaft 32 .
  • the axial thrust bearings 52 , 54 and the radial bearing 58 can be rolling element, for example roller bearings or ball bearings, and/or journal bearings. All bearings can also be either hydrostatic or hydrodynamic bearings.
  • Using axially loaded thrust bearings instead of conventional vertically loaded radial bearings improves the main bearing arrangement for wind turbines.
  • Journal hydrostatic thrust bearings instead of conventional rolling element bearings is one embodiment that enables the improvement.
  • Another improved embodiment is a combination of rolling element and journal bearings wherein the radial bearing can be a rolling element and the thrust bearings can be journal bearings.
  • the compound bearing can be specifically configured such that the first and second axial thrust bearings 52 , 54 are journal bearings with tilting pads 78 that enable a tilting movement in at least one direction of rotation of the bearing.
  • a white metal or a resin overlay, low in frictional coefficient to the sliding surfaces, can be applied to the tilting pads 78 .
  • Elastic support seats can be inserted with tilting pads 78 to correct any unevenness in distribution of loads applied to the tilting pads 78 .
  • a lubricating mechanism for the compound bearing can be at least one fluid supply groove, for example oil, that can be cut in the fixed raceway annulus, and at least one fluid supply hole, communicating with the fluid supply groove(s), which can pass through the inner surface 66 , the first axial surface 67 , and the second axial surface 68 of the fixed raceway annulus, thus supplying lubricating fluid (oil) to the radial and axial thrust bearing pads.
  • lubricating fluid oil

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rolling Contact Bearings (AREA)
  • Wind Motors (AREA)
US15/649,734 2017-07-14 2017-07-14 Compound main bearing arrangement for a wind turbine Active US10385830B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US15/649,734 US10385830B2 (en) 2017-07-14 2017-07-14 Compound main bearing arrangement for a wind turbine
ES18181922T ES2906786T3 (es) 2017-07-14 2018-07-05 Disposición de rodamiento principal compuesto para una turbina eólica
EP18181922.8A EP3428448B1 (en) 2017-07-14 2018-07-05 Compound main bearing arrangement for a wind turbine
DK18181922.8T DK3428448T3 (da) 2017-07-14 2018-07-05 Sammensatte hovedlejer til en vindmølle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/649,734 US10385830B2 (en) 2017-07-14 2017-07-14 Compound main bearing arrangement for a wind turbine

Publications (2)

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US20190017496A1 US20190017496A1 (en) 2019-01-17
US10385830B2 true US10385830B2 (en) 2019-08-20

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US15/649,734 Active US10385830B2 (en) 2017-07-14 2017-07-14 Compound main bearing arrangement for a wind turbine

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US (1) US10385830B2 (es)
EP (1) EP3428448B1 (es)
DK (1) DK3428448T3 (es)
ES (1) ES2906786T3 (es)

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Publication number Priority date Publication date Assignee Title
DE102017128949A1 (de) * 2017-12-06 2019-06-06 Thyssenkrupp Ag Wälzlageranordnung und Verfahren
AT521885B1 (de) * 2018-12-13 2020-09-15 Miba Gleitlager Austria Gmbh Gondel für eine Windkraftanlage
EP3904712B1 (en) * 2020-04-28 2024-06-26 Siemens Gamesa Renewable Energy A/S Main bearing for a wind turbine
EP3904709A1 (en) * 2020-04-28 2021-11-03 Siemens Gamesa Renewable Energy A/S Fluid film bearing, especially for a rotor hub in a wind turbine
CN111577771B (zh) * 2020-04-29 2023-05-23 国网山西省电力公司长治供电公司 带电操作隔离开关底座轴承替换装置
CN114658610A (zh) * 2020-12-23 2022-06-24 北京金风科创风电设备有限公司 传动系统以及风力发电机组

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606635A (en) 1898-06-28 Henry timken and reginald heinzelman
US606636A (en) 1898-06-28 Henry timken and reginald heinzelman
US2038465A (en) 1930-09-30 1936-04-21 Askania Werke Ag Temperature measuring and/or recording apparatus
US2038474A (en) 1933-11-07 1936-04-21 Torrington Co Antifriction bearing and method of making the same
US2063787A (en) 1934-09-24 1936-12-08 Torrington Co Antifriction bearing and method of making the same
US2509749A (en) 1946-06-07 1950-05-30 John B Thomson Ball bearing for linear motion
US5271676A (en) 1992-07-30 1993-12-21 General Electric Company Combination package tilt pad journal bearing/dual self equalizing thrust bearings, with hydrostatic lift provisions
US5435651A (en) 1993-11-15 1995-07-25 Everman; Michael R. Backlash free rotationally adjustable mount in the nature of a transmission
US5743658A (en) * 1995-12-15 1998-04-28 Renk Aktiengesellschaft Lubricated journal bearing
EP1677005A1 (en) 2003-09-30 2006-07-05 Mitsubishi Heavy Industries, Ltd. Wind wheel for wind power generation
US7183665B2 (en) 2004-04-19 2007-02-27 Northern Power Systems, Inc. Direct drive wind turbine
US20100215307A1 (en) 2007-04-25 2010-08-26 Schaeffler Kg Multiple-row large roller bearing, especially axial radial bearing for the main arrangement of bearings of the rotor shaft of a wind power installation
US7956484B2 (en) 2007-07-10 2011-06-07 Siemens Aktiengesellschaft Wind turbine, method for mounting a wind turbine and method for adjusting an air gap between a rotor and a stator of a generator of a wind turbine
US8075190B1 (en) 2010-09-16 2011-12-13 Vestas Wind Systems A/S Spherical plain bearing pocket arrangement and wind turbine having such a spherical plain bearing
US20120070280A1 (en) 2010-09-16 2012-03-22 Vestas Wind Systems A/S Control system for a wind turbine and method of operating a wind turbine based on monitoring a bearing
EP2568167A1 (en) 2011-09-08 2013-03-13 Siemens Aktiengesellschaft Direct-drive wind turbine
US20150017000A1 (en) 2012-06-19 2015-01-15 Fuji Electric Co., Ltd. Composite sliding bearing and wind power generating device using the same bearing
EP2913519A1 (en) 2012-12-28 2015-09-02 Mitsubishi Heavy Industries, Ltd. Wind power generation device
EP2921728A1 (en) 2014-03-20 2015-09-23 Areva Wind GmbH Hybrid shaft bearing with a hydrodynamic bearing and a rolling bearing, wind generator comprising a hybrid shaft bearing, use of the hybrid shaft bearing and method of operating the hybrid shaft bearing
US20150369284A1 (en) * 2013-01-30 2015-12-24 Miba Gleitlager Gmbh Slide bearing set
US9249782B2 (en) * 2012-01-31 2016-02-02 General Electric Company Snap ring retention assembly for a main shaft in a wind turbine
US9279413B2 (en) 2012-04-26 2016-03-08 Siemens Aktiengesellschaft Wind turbine
US9297363B2 (en) 2009-07-10 2016-03-29 Siemens Aktiengesellschaft Wind turbine main bearing
US9416867B2 (en) * 2012-05-08 2016-08-16 Zf Wind Power Antwerpen Nv Planetary gear stage with plain bearings as planet bearings and use thereof
US9458880B2 (en) 2010-04-14 2016-10-04 Miba Gleitlager Austria Gmbh Bearing element for supporting the rotor hub of a wind turbine
US9512879B2 (en) 2013-01-31 2016-12-06 Mitsubishi Hitachi Power Systems, Ltd. Tilting pad bearing device
US9657716B2 (en) 2011-04-27 2017-05-23 Aktiebolaget Skf Rotational support of a wind turbine blade
US20170261031A1 (en) * 2014-12-03 2017-09-14 Us Synthetic Corporation Bearing apparatus including a bearing assembly having a continuous bearing element and a tilting pad bearing assembly

Patent Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606635A (en) 1898-06-28 Henry timken and reginald heinzelman
US606636A (en) 1898-06-28 Henry timken and reginald heinzelman
US2038465A (en) 1930-09-30 1936-04-21 Askania Werke Ag Temperature measuring and/or recording apparatus
US2038474A (en) 1933-11-07 1936-04-21 Torrington Co Antifriction bearing and method of making the same
US2063787A (en) 1934-09-24 1936-12-08 Torrington Co Antifriction bearing and method of making the same
US2509749A (en) 1946-06-07 1950-05-30 John B Thomson Ball bearing for linear motion
US5271676A (en) 1992-07-30 1993-12-21 General Electric Company Combination package tilt pad journal bearing/dual self equalizing thrust bearings, with hydrostatic lift provisions
US5435651A (en) 1993-11-15 1995-07-25 Everman; Michael R. Backlash free rotationally adjustable mount in the nature of a transmission
US5743658A (en) * 1995-12-15 1998-04-28 Renk Aktiengesellschaft Lubricated journal bearing
EP1677005A1 (en) 2003-09-30 2006-07-05 Mitsubishi Heavy Industries, Ltd. Wind wheel for wind power generation
US7183665B2 (en) 2004-04-19 2007-02-27 Northern Power Systems, Inc. Direct drive wind turbine
US20100215307A1 (en) 2007-04-25 2010-08-26 Schaeffler Kg Multiple-row large roller bearing, especially axial radial bearing for the main arrangement of bearings of the rotor shaft of a wind power installation
US7956484B2 (en) 2007-07-10 2011-06-07 Siemens Aktiengesellschaft Wind turbine, method for mounting a wind turbine and method for adjusting an air gap between a rotor and a stator of a generator of a wind turbine
US9297363B2 (en) 2009-07-10 2016-03-29 Siemens Aktiengesellschaft Wind turbine main bearing
US9458880B2 (en) 2010-04-14 2016-10-04 Miba Gleitlager Austria Gmbh Bearing element for supporting the rotor hub of a wind turbine
US20120070280A1 (en) 2010-09-16 2012-03-22 Vestas Wind Systems A/S Control system for a wind turbine and method of operating a wind turbine based on monitoring a bearing
US8075190B1 (en) 2010-09-16 2011-12-13 Vestas Wind Systems A/S Spherical plain bearing pocket arrangement and wind turbine having such a spherical plain bearing
US9657716B2 (en) 2011-04-27 2017-05-23 Aktiebolaget Skf Rotational support of a wind turbine blade
EP2568167A1 (en) 2011-09-08 2013-03-13 Siemens Aktiengesellschaft Direct-drive wind turbine
US9249782B2 (en) * 2012-01-31 2016-02-02 General Electric Company Snap ring retention assembly for a main shaft in a wind turbine
US9279413B2 (en) 2012-04-26 2016-03-08 Siemens Aktiengesellschaft Wind turbine
US9416867B2 (en) * 2012-05-08 2016-08-16 Zf Wind Power Antwerpen Nv Planetary gear stage with plain bearings as planet bearings and use thereof
US20150017000A1 (en) 2012-06-19 2015-01-15 Fuji Electric Co., Ltd. Composite sliding bearing and wind power generating device using the same bearing
EP2913519A1 (en) 2012-12-28 2015-09-02 Mitsubishi Heavy Industries, Ltd. Wind power generation device
US20150369284A1 (en) * 2013-01-30 2015-12-24 Miba Gleitlager Gmbh Slide bearing set
US9512879B2 (en) 2013-01-31 2016-12-06 Mitsubishi Hitachi Power Systems, Ltd. Tilting pad bearing device
EP2921728A1 (en) 2014-03-20 2015-09-23 Areva Wind GmbH Hybrid shaft bearing with a hydrodynamic bearing and a rolling bearing, wind generator comprising a hybrid shaft bearing, use of the hybrid shaft bearing and method of operating the hybrid shaft bearing
US20170261031A1 (en) * 2014-12-03 2017-09-14 Us Synthetic Corporation Bearing apparatus including a bearing assembly having a continuous bearing element and a tilting pad bearing assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Extended European Search Report and Opinion issued in connection with corresponding EP Application No. 18181922.8 dated Nov. 22, 2018.

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US20190017496A1 (en) 2019-01-17
EP3428448A1 (en) 2019-01-16

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