[go: up one dir, main page]

WO2003029671A1 - Apparatus for lubricating the bearings of an electrical power generator in a wind turbine - Google Patents

Apparatus for lubricating the bearings of an electrical power generator in a wind turbine Download PDF

Info

Publication number
WO2003029671A1
WO2003029671A1 PCT/DK2001/000642 DK0100642W WO03029671A1 WO 2003029671 A1 WO2003029671 A1 WO 2003029671A1 DK 0100642 W DK0100642 W DK 0100642W WO 03029671 A1 WO03029671 A1 WO 03029671A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
oil
closed space
pumping device
surrounding
Prior art date
Application number
PCT/DK2001/000642
Other languages
French (fr)
Inventor
Torben Werge MØLLER
Kent Jensen
Original Assignee
Vestas Wind Systems A/S
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 Vestas Wind Systems A/S filed Critical Vestas Wind Systems A/S
Priority to PCT/DK2001/000642 priority Critical patent/WO2003029671A1/en
Publication of WO2003029671A1 publication Critical patent/WO2003029671A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6685—Details of collecting or draining, e.g. returning the liquid to a sump
    • 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
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • 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
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/14—Bearings
    • 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

Definitions

  • the present invention relates to an electrical power generator in a wind turbine and more specifically to an apparatus for lubricating the bearings of such an electrical power generator, as stated in the introductory part of claim 1.
  • the bearings are lubricated with oil supplied to the bearings by a pumping function, thereby ensuring a circulation of oil, improving the heat dispersion from the bearings and giving a possibility of performing a measurement on, and possibly conditioning of, the circulated oil, thus attaining relatively long service intervals for the bearings of the electrical power generator.
  • Fig. 1 schematically shows an end view of a bearing construction incorporation the pre- sent invention
  • Fig. 2 schematically shows a cross-section in the bearing of fig. 1 along the lines ll-ll, and
  • Fig. 3 shows a corresponding cross-section along the lines Ill-Ill.
  • the bearing construction shown in figs. 1-3 is constructed to provide a lubrication of the bearings in accordance with the present invention and for use in an electrical power generator in a wind turbine.
  • the bearing 1 is surrounded by a closed space 2 through which lubricating oil is circulated by means of a pumping device schematically shown at 3.
  • the circulated oil enters the closed space 2 surrounding the bearing 1 through an inlet 7, in fig. 3 shown as two separate inlets, one for each side of the bearing 1 , said inlet 7 being positioned close to the top of the bearing 1.
  • the oil At the bottom of the closed space 2 the oil will reach a level 6 due to the offset position of the outlet 8 from the closed space 2. The oil level 6 will ensure a certain minimum lubrication of the bearing 1 if the oil circulation should fail. From the outlet 8 the circulated oil is led to an oil reservoir 4, from which the pumping device 3 pumps the oil to the inlet 7.
  • a raised level oil reservoir 9 can be used for supplying the oil to the inlet 7.
  • the pumping device 3 and the reservoir 4 are built into the closed space 2 and possibly a raised level oil reservoir 9 is also provided inside the closed space 2, whereby no external connections are needed.
  • the pumping device 3 may be an electrically driven oil pump or a mechanically driven oil pump e.g. driven by the rotation of the generator axle 11.
  • the pumping device 3 may be provided in the form of a gravitation ring on the generator axle 11 delivering the oil to a raised level reservoir 9 and taking up the oil from the combined oil reservoir 4 and 5.
  • the oil can be supplied to the inlet 7 from the gearbox (not shown) connecting the wings of the wind turbine to the generator.
  • This gearbox will normally comprise an oil reservoir 4, a pumping device 3 and means for performing measurements on and conditioning of the circulated oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power 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)

Abstract

The apparatus for lubricating the bearings of an electrical power generator in a wind turbine comprises a closed space (2) surrounding each bearing (1), at least one pumping device (3) for circulating oil to the closed space (2) surrounding each bearing (1), and at least one oil reservoir (4) connected to the pumping device (3) for delivering oil thereto and connected to the closed space (2) surrounding each bearing (1) for receiving oil therefrom. In this way the service intervals can be extended, heat dispersion features improved and bearing lifetime increased compared to the traditional grease lubrication of the bearings.

Description

APPARATUS FOR LUBRICATING THE BEARINGS OF AN ELECTRICAL POWER GENERATOR IN A WIND TURBINE
Technical Field
The present invention relates to an electrical power generator in a wind turbine and more specifically to an apparatus for lubricating the bearings of such an electrical power generator, as stated in the introductory part of claim 1.
Background Art
In electrical power generator in wind turbines it is known to lubricate the bearings with grease, such grease lubrication involving relatively short service intervals for replenish- ing the grease and from time to time exchange of the grease. In connection with offshore wind turbines such relatively short service intervals are not acceptable. Furthermore, the large sizes of wind turbines developed require correspondingly large power generators with correspondingly large size bearings. Such large size bearings result in increased peripheral speeds, which have a tendency to separate the lubricating grease into soap and oil. Furthermore, the large size bearings do not provide an optimal heat dispersion from the bearing to the machine construction.
Disclosure of the Invention
It is the object of the present invention to provide an apparatus for lubricating the bearings of an electrical power generator in a wind turbine, with which it is possible to extend the service intervals and at the same time improve the heat dispersion features and increase bearing lifetime, and this object is achieved with an apparatus for lubricating the bearings of an electrical power generator in a wind turbine which, according to the invention comprises features set forth in the characterizing clause of claim 1. With this arrangement the bearings are lubricated with oil supplied to the bearings by a pumping function, thereby ensuring a circulation of oil, improving the heat dispersion from the bearings and giving a possibility of performing a measurement on, and possibly conditioning of, the circulated oil, thus attaining relatively long service intervals for the bearings of the electrical power generator.
Brief Description of the Drawings
In the following detailed part of the description the invention will be explained in more detail with reference to the exemplary embodiment of an apparatus for lubricating the bearings of an electrical power generator in a wind turbine according to the invention shown in the drawings, in which
Fig. 1 schematically shows an end view of a bearing construction incorporation the pre- sent invention,
Fig. 2 schematically shows a cross-section in the bearing of fig. 1 along the lines ll-ll, and
Fig. 3 shows a corresponding cross-section along the lines Ill-Ill.
Description of the Preferred Embodiment
The bearing construction shown in figs. 1-3 is constructed to provide a lubrication of the bearings in accordance with the present invention and for use in an electrical power generator in a wind turbine. In the shown construction the bearing 1 is surrounded by a closed space 2 through which lubricating oil is circulated by means of a pumping device schematically shown at 3. The circulated oil enters the closed space 2 surrounding the bearing 1 through an inlet 7, in fig. 3 shown as two separate inlets, one for each side of the bearing 1 , said inlet 7 being positioned close to the top of the bearing 1. By gravity the oil entering the closed space 2 at the top of the bearing 1 will flow down to the bottom of the closed space 2, some of the oil entering the bearing construction 1 and lubricating the bearing, i.e. the races and the balls of the ball bearing shown. At the bottom of the closed space 2 the oil will reach a level 6 due to the offset position of the outlet 8 from the closed space 2. The oil level 6 will ensure a certain minimum lubrication of the bearing 1 if the oil circulation should fail. From the outlet 8 the circulated oil is led to an oil reservoir 4, from which the pumping device 3 pumps the oil to the inlet 7.
As an alternative, shown in broken line, a raised level oil reservoir 9 can be used for supplying the oil to the inlet 7.
In a preferred embodiment the pumping device 3 and the reservoir 4 are built into the closed space 2 and possibly a raised level oil reservoir 9 is also provided inside the closed space 2, whereby no external connections are needed.
The pumping device 3 may be an electrically driven oil pump or a mechanically driven oil pump e.g. driven by the rotation of the generator axle 11. In the closed version with all components inside the closed space 2, the pumping device 3 may be provided in the form of a gravitation ring on the generator axle 11 delivering the oil to a raised level reservoir 9 and taking up the oil from the combined oil reservoir 4 and 5.
As another alternative, the oil can be supplied to the inlet 7 from the gearbox (not shown) connecting the wings of the wind turbine to the generator. This gearbox will normally comprise an oil reservoir 4, a pumping device 3 and means for performing measurements on and conditioning of the circulated oil. By connecting the pumping device 3 of the gearbox to the inlet 7 to the closed space 2 surrounding the bearing 1 and connecting the outlet 8 from the closed space 2 to the gearbox oil reservoir the lubrica- tion of the bearing 1 is provided in a simple manner.
Although the invention has been described above in connection with a number of preferred embodiments thereof it will be evident for a person skilled in the art that several modifications are possible within the scope of the following claims.

Claims

1. Apparatus for lubricating the bearings of an electrical power generator in a wind turbine, characterized by comprising
a closed space (2) surrounding each bearing (1),
- at least one pumping device (3) for circulating oil to the closed space (2) surrounding each bearing (1),
at least one oil reservoir (4) connected to the pumping device (3) for delivering oil thereto and connected to the closed space (2) surrounding each bearing (1) for receiving oil therefrom.
2. Apparatus in accordance with claim 1, characterized by the closed space (2) surrounding each bearing (1) comprising an internal oil reservoir (5) having a controlled minimum level (6) corresponding to the lower parts of the bearing (1), thus securing a certain minimum lubrication of the bearing (1), if the pumping device (3) fails to circulate oil to the closed space (2) surrounding each bearing (1).
3. Apparatus in accordance with claims 1 or 2, characterized by the closed space (2) surrounding each bearing (1) comprising an inlet (7) close to the top of the bearing (1) for receiving oil from the pumping device (3) and an outlet (8) close to the bottom of the bearing (1) for draining oil to the oil reservoir (4).
4. Apparatus in accordance with any of the preceding claims, characterized by the pumping device (3) being mechanically driven by the rotation of the generator axle
(1 1 ).
5. Apparatus in accordance with any of the claims 1 to 3, characterized by the pumping device (3) being electrically driven.
6. Apparatus in accordance with any of the preceding claims, characterized by the pumping device (3) being provided in the form of a gravitation ring delivering the oil to a raised level reservoir (9), from which the oil is delivered by gravitation to the closed space (2) surrounding each bearing (1).
7. Apparatus in accordance with any of the preceding claims, characterized by the oil reservoir (4) being integrated in the closed space (2) surrounding each bearing (1).
8. Apparatus in accordance with claim 7, characterized by the pumping device (3) being integrated in the closed space (2) surrounding each bearing (1).
9. Apparatus in accordance with any of the claims 1 to 3, characterized by the pumping device (3) and oil reservoir (4) being provided by the corresponding components, i.e. pumping device (3) and oil reservoir (4), in the gearbox connecting the wings of the wind turbine to the generator.
10. Apparatus in accordance with any of the preceding claims, characterized by comprising means for performing measurements on and/or conditioning of the circulated oil.
PCT/DK2001/000642 2001-10-03 2001-10-03 Apparatus for lubricating the bearings of an electrical power generator in a wind turbine WO2003029671A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DK2001/000642 WO2003029671A1 (en) 2001-10-03 2001-10-03 Apparatus for lubricating the bearings of an electrical power generator in a wind turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2001/000642 WO2003029671A1 (en) 2001-10-03 2001-10-03 Apparatus for lubricating the bearings of an electrical power generator in a wind turbine

Publications (1)

Publication Number Publication Date
WO2003029671A1 true WO2003029671A1 (en) 2003-04-10

Family

ID=8149445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2001/000642 WO2003029671A1 (en) 2001-10-03 2001-10-03 Apparatus for lubricating the bearings of an electrical power generator in a wind turbine

Country Status (1)

Country Link
WO (1) WO2003029671A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102147005A (en) * 2011-03-15 2011-08-10 南京高速齿轮制造有限公司 Input end of gear box of wind power generator
WO2012038327A1 (en) * 2010-09-21 2012-03-29 Xemc Darwind B.V. Wind turbine with oil lubrication
DE102011005240A1 (en) * 2011-03-08 2012-09-13 Aktiebolaget Skf Rolling bearing arrangement of a wind turbine
GB2500118A (en) * 2012-03-10 2013-09-11 Romax Technology Ltd Gravity fed lubrication arrangement for a rotating machine
EP2570663A3 (en) * 2011-09-14 2013-11-13 General Electric Company Drivetrain and method for lubricating bearing in wind turbine
US8672093B2 (en) 2008-10-17 2014-03-18 Mitsubishi Heavy Industries, Ltd. Wind turbine generator
JP2016017300A (en) * 2014-07-07 2016-02-01 日立建機株式会社 Greasing device of rotating electrical machine for work vehicle
CN105526261A (en) * 2016-01-28 2016-04-27 陈岩 Double-bearing circulation oil lubricating system under combined centrifugal action of turbines and shaft
CN105715929A (en) * 2014-04-12 2016-06-29 方义飞 Mineral engineering machine, engineering machine, bearing block and system for cleaning oil chamber of bearing block
CN105909958A (en) * 2014-12-31 2016-08-31 林肯工业公司 Lubrication Method For Housing Having An Exclusion Seal
EP2895786B1 (en) 2012-08-01 2016-11-23 Vestas Wind Systems A/S Method and system of lubricating consumers to be monitored via their lubricant
JP2019196727A (en) * 2018-05-09 2019-11-14 Ntn株式会社 Bearing device used in wind power generator
CN113639179A (en) * 2021-08-19 2021-11-12 中广核(湖北)综合能源服务有限公司 Generator lubrication equipment of fan
WO2025020079A1 (en) * 2023-07-25 2025-01-30 Envision Energy Co., Ltd. A drivetrain for a wind turbine and a wind turbine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241959A (en) * 1978-02-04 1980-12-30 Robert Bosch Gmbh Apparatus for long-term lubrication of bearing elements
US4942944A (en) * 1989-04-03 1990-07-24 Allied-Signal Inc. Screw pump for lubricating generator bearing
EP0854314A2 (en) * 1993-03-18 1998-07-22 B a r m a g AG Method and device for supplying a lubricant to an antifriction bearing
US6261003B1 (en) * 1998-02-18 2001-07-17 Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” Apparatus for controlling the radial play of a roller bearing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241959A (en) * 1978-02-04 1980-12-30 Robert Bosch Gmbh Apparatus for long-term lubrication of bearing elements
US4942944A (en) * 1989-04-03 1990-07-24 Allied-Signal Inc. Screw pump for lubricating generator bearing
EP0854314A2 (en) * 1993-03-18 1998-07-22 B a r m a g AG Method and device for supplying a lubricant to an antifriction bearing
US6261003B1 (en) * 1998-02-18 2001-07-17 Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” Apparatus for controlling the radial play of a roller bearing

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8672093B2 (en) 2008-10-17 2014-03-18 Mitsubishi Heavy Industries, Ltd. Wind turbine generator
WO2012038327A1 (en) * 2010-09-21 2012-03-29 Xemc Darwind B.V. Wind turbine with oil lubrication
CN103189643A (en) * 2010-09-21 2013-07-03 湘电达尔文有限责任公司 Wind turbine with oil lubrication
US9903345B2 (en) 2010-09-21 2018-02-27 Xemc Darwind B.V. Wind turbine with oil lubrication
DE102011005240A1 (en) * 2011-03-08 2012-09-13 Aktiebolaget Skf Rolling bearing arrangement of a wind turbine
CN102147005A (en) * 2011-03-15 2011-08-10 南京高速齿轮制造有限公司 Input end of gear box of wind power generator
EP2570663A3 (en) * 2011-09-14 2013-11-13 General Electric Company Drivetrain and method for lubricating bearing in wind turbine
GB2500118A (en) * 2012-03-10 2013-09-11 Romax Technology Ltd Gravity fed lubrication arrangement for a rotating machine
GB2500118B (en) * 2012-03-10 2014-09-17 Romax Technology Ltd A lubrication arrangement feeding key components by gravity
EP2895786B1 (en) 2012-08-01 2016-11-23 Vestas Wind Systems A/S Method and system of lubricating consumers to be monitored via their lubricant
EP2895786B2 (en) † 2012-08-01 2023-09-27 Vestas Wind Systems A/S Method and system of lubricating consumers to be monitored via their lubricant
US11703182B2 (en) 2012-08-01 2023-07-18 Vestas Wind Systems A/S Method and system of lubricating consumers to be monitored via their lubricant
CN105715929A (en) * 2014-04-12 2016-06-29 方义飞 Mineral engineering machine, engineering machine, bearing block and system for cleaning oil chamber of bearing block
JP2016017300A (en) * 2014-07-07 2016-02-01 日立建機株式会社 Greasing device of rotating electrical machine for work vehicle
CN105909958A (en) * 2014-12-31 2016-08-31 林肯工业公司 Lubrication Method For Housing Having An Exclusion Seal
CN105526261A (en) * 2016-01-28 2016-04-27 陈岩 Double-bearing circulation oil lubricating system under combined centrifugal action of turbines and shaft
JP2019196727A (en) * 2018-05-09 2019-11-14 Ntn株式会社 Bearing device used in wind power generator
WO2019216298A1 (en) * 2018-05-09 2019-11-14 Ntn株式会社 Bearing device for use in wind power generator
JP6995011B2 (en) 2018-05-09 2022-01-14 Ntn株式会社 Bearing equipment used in wind power generation equipment
CN113639179A (en) * 2021-08-19 2021-11-12 中广核(湖北)综合能源服务有限公司 Generator lubrication equipment of fan
WO2025020079A1 (en) * 2023-07-25 2025-01-30 Envision Energy Co., Ltd. A drivetrain for a wind turbine and a wind turbine

Similar Documents

Publication Publication Date Title
WO2003029671A1 (en) Apparatus for lubricating the bearings of an electrical power generator in a wind turbine
JP4322964B2 (en) Constant flow cascade lubricator
CN204716945U (en) There is the drive motor of motor and transmitting assemblies
CN101779036A (en) Wind driven electric power generator
US10006442B2 (en) Drive train and wind power plant with a drive train
CA1202914A (en) Main bearing lubrication system for scroll machine
CN102667148A (en) Drive train and wind turbine
EP4310364A1 (en) Transmission mechanism
US12104580B2 (en) Main bearing housing of a wind turbine
CN108138781B (en) Helical-lobe compressor
CN111771053A (en) Integrated wind turbine power train lubrication system
CN212583950U (en) Oil supply mechanism of variable frequency compressor
JP2016538450A (en) Hydraulic power recovery turbine with integrated bearing clutch housing
CN214045305U (en) Motor, pump assembly and motor shaft with cooling circulation function
US6854955B2 (en) Internal lubrication screw pump for hollow shaft
CN115574004A (en) Shaft collar type bearing cooling system
JPH0721929Y2 (en) Bearing cooling device for horizontal shaft type rotating machine
CN111946621A (en) Oil supply mechanism of variable frequency compressor
JPH07310643A (en) Main bearing cooling device for water turbine
CN206860453U (en) The oil supply system and rotary compressor of compressor
ES2971514T3 (en) Main bearing housing of a wind turbine
CN214837320U (en) Thin oil lubrication bearing part of horizontal centrifugal pump with high lubrication efficiency
CN110586346B (en) Direct-connection transmission disc type separator
CN218268474U (en) Bearing lubricating device of screw blower
JP3724101B2 (en) Bearing lubrication device and its self-pump structure

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ PH PL PT RO SD SE SG SI SK SL TJ TM TR TT TZ UG US UZ VN YU ZA

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZW AM AZ BY KG KZ MD TJ TM AT BE CH CY DE DK ES FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP