GB2201200A - Lubrication of gear means for a wind energy installation - Google Patents
Lubrication of gear means for a wind energy installation Download PDFInfo
- Publication number
- GB2201200A GB2201200A GB08801295A GB8801295A GB2201200A GB 2201200 A GB2201200 A GB 2201200A GB 08801295 A GB08801295 A GB 08801295A GB 8801295 A GB8801295 A GB 8801295A GB 2201200 A GB2201200 A GB 2201200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- casing
- gear means
- reservoir
- feeding
- 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.)
- Granted
Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 230000001050 lubricating effect Effects 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 63
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
-
- 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
Landscapes
- 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)
- General Details Of Gearings (AREA)
Abstract
A method of lubricating gear means for a wind energy installation comprises the steps of maintaining operational lubrication by an oil-circulating system (12 to 15) with injection lubrication, with the oil being cooled at the same time. The normal height (I) of the oil level in the gear means casing (11) is increased to a height (II) necessary for splash lubrication when the rotational speed of the gear means falls below a settable value. To increase the height of the oil level, an additional quantity of oil is fed to the casing (11) from a reservoir (17). <IMAGE>
Description
LUBRICATION OF GEAR MEANS FOR A WIND ENERGY INSTALLATION
The present invention relates to a method of lubricating gear means for a wind energy installation and to drive means for such an installation.
The gears of wind energy installations are provided with injection lubrication for reasons of efficiency because of losses in splash lubrication and also to allow heat removal in an oil-circulating system.
Splash lubrication has proved to be too expensive and energy-consuming.
However, since installations of that kind are switched off when, for example, the wind is weak and then constantly carry out tumbling motions, the rolling bearings and gear toothings would be without lubrication and thus subject to considerable wear.
There is thus a need to overcome the disadvantages of injection lubrication and yet to retain the advantages, in particular by maintaining lubrication even when oil injection no longer functions due to switching-off of the installation.
According to a first aspect of the present invention there is provided a method of lubricating gear means for a wind energy installation, the method comprising the steps of circulating lubricating oil through a casing of the gear means by way of a circulatory system in which the oil is injected into the gear means and removed from the casing with maintenance of the level of oil therein at a predetermined height, and so feeding an additional quantity of oil to the casing when the rotational speed of the gear means falls below a settable value as to increase the level of oil in the casing to a height permitting splash lubrication of the gear means.
In a preferred example of the method, operational lubr cation is maintained by an oil-circulating system with injection lubrication and the oil is at the same time cooled in the circulating system.
The normal oil level in the gear means casing is brought to a height necessary for splash lubrication when a settable rotational speed is fallen below, in which case the additional quantity of oil required for this is fed to the casing.
Preferably, the method comprises the steps of removing the additional quantity of oil from the casing when the rotational speed of the gear means rises above a settable value thereby to return the level of oil in the casing to the predetermined height, and delivering the removed quantity of oil to a reservoir, the step of feeding the additional quantity of oil to the casing comprising removing oil from the reservoir. The additional quantity of oil is taken out of the reservoir, into which the quantity of oil, that becomes free during the lowering of the oil level to normal height, is fed back again.
The advantage of such a method is clearly apparent: the gear means with its teeth and bearings lies in oil even when the wind energy installation stands still, so that damage'due to non-lubrication may be avoided.
According to a second aspect of the present invention there is provided drive means for a wind energy installation, the drive means comprising gear means for the installation and lubricating means to provide lubrication of the gear means and comprising a circulatory system for circulating lubricating oil through a casing of such gear means, the circulatory system comprising injection means for injecting the oil into the gear means and removing means for removing oil from the casing with maintenance of the level of oil therein at a predeter mined height, and feeding means for so feeding an additional quantity of oil to the casing when the rotational speed of the gear means falls below a settable value as to increase the level of oil in the casing to a height permitting splash lubrication of the gear means.
Preferably, the lubricating means further comprises a reservoir, the removing means being operable to remove the additional quantity of oil from the casing when the rotational speed of the gear means rises above a settable value thereby to return the level of oil in the casing to the predetermined height and further operable to deliver the removed quantity of oil to the reservoir, and the feeding means being operable to remove oil from the reservoir for feeding of the additional quantity of oil to the casing.
For preference the removing means is connected by a delivery duct to the reservoir and by a bypass duct tithe injection means, and the feeding means is connected to the reservoir by flow control valve means.
Preferably, the reservoir is arranged at such a height relative to the casing as to permit gravity feed by the feeding means from the reservoir to the casing.
An example of the method and an embodiment of the apparatus of the present invention will now be more particularly described with reference to the accompanying drawing, the single figure of which is a diagram of drive means embodying the invention.
Referring now to the drawing, there is shown drive means for a wind energy installation, the drive means comprising gear means arranged in a casing 11. The oil level I is normally present in the casing 11 and the lubrication is so maintained by an oil-circulating system that the oil is sprayed at the loaded places. The oil-cirlating system comprises a pump 12, a filter-13 and a heat exchanger 14. The oil is drawn off through an outlet duct 15 from about the lowest point of the casing by the pump 12, pumped through the filter 13 and the heat exchanger 14, passed by way of a duct 16 back to the casing 11 and, distributed in known manner, injected into the gear means by injection means (not shown).A reservoir container 17 is arranged with a bypass in the oil-circulating system, in particular connected by a duct 20 to the heat exchanger 14 and by a duct 18 with a throttle valve 19 to the casing 11. The reservoir container 17 is disposed at a higher level than the casing 11.
In normal operation of the wind energy installation, the valve 19 is wholly or at least largely closed and the pump 12 pumps the oil through the filter 13 and the heat exchanger 14 by way of the duct 20 into the reservoir container 17 until this is full. The oil is then sent by way of the duct 16 into the casing 11 at the individual injection places. The normal oil level I is then established by this oil. If the wind energy installation stands still due to the absence of wind, then the valve 19 is opened by way of a monitoring mechanism or an electronic monitoring system, whereby the oil collected in the container 17 flows by gravity into the casing 11 until the oil level
II is attained. Since the wind energy installation substantially stands still, the pump 12 can no longer operate so that no oil is pumped into the container 17. In this state, the gear means can absorb the tumbling movements without damage at least in respect of lubrication, because the oil level II is of such height as to allow splash lubrication of the bearings and teeth of the gear means.
If the wind energy installation starts to run again when sufficient wind is present, then the valve 19 is closed and the pump 12 again conveys oil into the container 17 until this is completely filled.
The oil level I is again attained in the casing and the gear means is lubricated by injection. It can thus operate uninfluenced by the energy losses of splash lubrication. This cycle can repeat as often as necessary.
The reservoir container 17 can, of course, be arranged in a different position, in which case it is necessary to ensure that the oil in the reservoir container is fed into the casing, for example by being pumped, when the wind energy installation stands still. The height of the two oil levels in the casing is easily determined and depends on, in particular, the kind of gear means and size thereof.
Claims (9)
1. A method of lubricating gear means for a wind energy installation, the method comprising the steps of circulating lubricating oil through a casing of the gear means by way of a circulatory system in which the oil is injected into the gear means and removed from the casing with maintenance of the level of oil therein at a predetermined height, and so feeding an additional quantity of oil to the casing when the rotational speed of the gear means falls below a settable value as to increase the level of oil in the casing to a height permitting splash lubrication of the gear means.
2. A method as claimed in claim 1, wherein the method comprises the steps of removing the additional quantity of oil from the casing when the rotational speed of the gear means rises above a settable value thereby to return the level of oil in the casing to the predetermined height, and delivering the removed quantity of oil to a reservoir, the step of feeding the additional quantity of oil to the casing comprising removing oil from the reservoir.
3. A method as claimed in either claim 1 or claim 2, comprising at least one of the step of cooling the oil and the step of filtering the oil in the circulatory system after removal from the casing and before injection into the gear means.
4. A method asclaimed in claim 1 and substantially as hereinbefore describedwith reference to the accompanying drawing.
5. Drive means for a wind energy installation, the drive means comprising gear means for the installation and lubricating means to provide lubrication of the gear means and comprising a circulatory system for circulating lubricating oil through a casing of such gear means, the circulatory system comprising injection means for injecting the oil into the gear means and removing means for removing oil from the casing with maintenance of the level of oil therein at a predetermined height, and feeding means for so feeding an additional quantity of oil to the casing when the rotational speed of the gear means falls below a settable value as to increase the level of oil in the casing to a height permitting splash lubrication of the gear means.
6. Drive means as claimed in claim 5, the lubricating means further comprising a reservoir, the removing means being operable to remove the additional quantity of oil from the casing when the rotational speed of the gear means rises above a settable value thereby to return the level of oil in the casing to the predetermined height and further operable to deliver the removed quantity of oil to the reservoir, and the feeding means being operable to remove oil from the reservoir for feeding of the additional quantity of oil to the casing.
7. Drive means as claimed in claim 6, the removing means being connected by a delivery duct to the reservoir and by a bypass duct to the injection means and the feeding means being connected to the reservoir by flow control valve means.
& Drive means as claimed-in either claim 6 or claim 7, wherein the reservoir is arranged at such a height relative to the casing as to permit gravity feed by the feeding means from the reservoir to the casing.
9. Drive means substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873702008 DE3702008A1 (en) | 1987-01-23 | 1987-01-23 | TRANSMISSION LUBRICATION FOR WIND POWER PLANTS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8801295D0 GB8801295D0 (en) | 1988-02-17 |
| GB2201200A true GB2201200A (en) | 1988-08-24 |
| GB2201200B GB2201200B (en) | 1990-08-08 |
Family
ID=6319427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8801295A Expired - Fee Related GB2201200B (en) | 1987-01-23 | 1988-01-21 | Lubrication of gear means for a wind energy installation |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3702008A1 (en) |
| GB (1) | GB2201200B (en) |
| SE (1) | SE8800052L (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2810374A1 (en) * | 2000-06-19 | 2001-12-21 | Jeumont Ind | DEVICE FOR PRODUCING ELECTRIC CURRENT FROM WIND ENERGY |
| WO2003031812A1 (en) * | 2001-10-05 | 2003-04-17 | Hansen Transmissions International Nv | Dry sump lubrication system with removable oil reservoir for wind turbine gearbox |
| WO2004083630A3 (en) * | 2003-03-21 | 2004-10-28 | Vestas Wind Sys As | Methods of moving the rotating means of a wind turbine during transportation or stand still, method of controlling the moving of the rotating means, nacelle, auxiliary device, control and monitoring system and use hereof |
| WO2007134815A1 (en) * | 2006-05-23 | 2007-11-29 | Lincoln Gmbh | Bearing arrangement and metering valve and suction device therefor |
| AU2004317282B2 (en) * | 2004-03-12 | 2008-06-05 | Vestas Wind Systems A/S | A wind turbine with a fluid supply system and method |
| ES2321995A1 (en) * | 2005-10-05 | 2009-06-15 | Ascend Rmm, S.L. | Procedure for the change of oil wind turbines and mobile equipment for the change of oil wind turbines at heights of up to 100 meters. (Machine-translation by Google Translate, not legally binding) |
| WO2009147147A3 (en) * | 2008-06-02 | 2010-01-28 | Vestas Wind Systems A/S | A lubrication system for a gear system for a wind turbine |
| WO2011048183A1 (en) | 2009-10-23 | 2011-04-28 | Vestas Wind Systems A/S | A lubrication system for a gear system providing emergency lubrication |
| EP2251566A4 (en) * | 2008-09-03 | 2011-07-20 | Mitsubishi Heavy Ind Ltd | Speed increasing gear lubrication device and method |
| CN102853063A (en) * | 2011-06-28 | 2013-01-02 | 歌美飒创新技术公司 | Oil level maintenance system |
| EP2573388A1 (en) | 2011-09-22 | 2013-03-27 | Moventas Gears Oy | A method for controlling lubrication of a gear unit and a gear unit |
| US20130133454A1 (en) * | 2011-11-30 | 2013-05-30 | Thomas Barthel | Gear unit with improved lubricant supply |
| WO2013136056A1 (en) * | 2012-03-10 | 2013-09-19 | Romax Technology Limited | Overhead tank |
| US9086055B2 (en) * | 2010-01-11 | 2015-07-21 | General Electric Company | Lubrication of fluid turbine gearbox during idling or loss of electric grid |
| US20160061190A1 (en) * | 2014-08-29 | 2016-03-03 | Siemens Aktiengesellschaft | Drive train and wind power plant with a drive train |
| CN105605208A (en) * | 2016-03-02 | 2016-05-25 | 上海东海风力发电有限公司 | Connection protection device of oil delivery pipe of shipborne offshore wind power oil exchange device |
| EP3040553A1 (en) * | 2014-12-29 | 2016-07-06 | Hitachi, Ltd. | Wind power generation station and gearbox |
| US10060415B2 (en) | 2013-11-25 | 2018-08-28 | Zf Friedrichshafen Ag | Emergency lubrication for wind turbine gearboxes |
| CN110259926A (en) * | 2019-06-21 | 2019-09-20 | 嘉兴学院 | A kind of wind power generating set speed reducer automatic oil filtering device |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19856941C1 (en) * | 1998-12-10 | 2000-02-17 | Daimler Chrysler Ag | Lubrication system for gearbox in road vehicle incorporates pump and control valve |
| DE10260132A1 (en) * | 2002-12-19 | 2004-07-01 | Winergy Ag | Planetary gear for a wind turbine |
| DE102007029469B4 (en) | 2007-06-26 | 2013-04-11 | Nordex Energy Gmbh | Wind turbine gearbox and method for its oil supply |
| DE102008055632B4 (en) * | 2008-11-03 | 2012-05-16 | Aerodyn Engineering Gmbh | Method for lubricating a gearbox |
| DE102009017521B4 (en) | 2009-04-17 | 2011-04-28 | Repower Systems Ag | Transmission of a wind turbine |
| DE102011080359A1 (en) * | 2011-05-31 | 2012-12-06 | Siemens Aktiengesellschaft | Wind turbine gearbox for use in wind power plant, has oil-sealed connection part including regulating device that regulates inflow of transmission oil from external oil reservoir into oil sump in dependent on oil temperature |
| DE102015118203A1 (en) | 2015-10-26 | 2017-04-27 | Nordex Energy Gmbh | Transmission for a wind turbine and method for operating the same |
| CN106439462B (en) * | 2016-12-01 | 2019-01-04 | 重庆川东船舶重工有限责任公司 | A kind of efficient oil changing device of wind turbine gearbox |
| AT521687B1 (en) * | 2018-12-13 | 2020-04-15 | Miba Gleitlager Austria Gmbh | Gondola for a wind turbine |
| AT521882B1 (en) | 2018-12-13 | 2021-05-15 | Miba Gleitlager Austria Gmbh | Plain bearings, in particular for a gearbox of a wind turbine |
| AT521953B1 (en) | 2018-12-13 | 2020-07-15 | Miba Gleitlager Austria Gmbh | Gondola for a wind turbine |
| AT521775B1 (en) | 2018-12-13 | 2020-06-15 | Miba Gleitlager Austria Gmbh | Planetary gear for a wind turbine |
| AT521884B1 (en) | 2018-12-13 | 2020-10-15 | Miba Gleitlager Austria Gmbh | Method for changing a slide bearing element of a rotor bearing of a wind turbine, as well as a nacelle for a wind turbine |
| AT521885B1 (en) | 2018-12-13 | 2020-09-15 | Miba Gleitlager Austria Gmbh | Gondola for a wind turbine |
| DK3808976T3 (en) * | 2019-10-17 | 2024-03-04 | General Electric Renovables Espana Sl | A GEARBOX SYSTEM FOR A WINDMILL, WINDMILL WITH A GEARBOX SYSTEM AND METHOD OF OPERATING A GEARBOX SYSTEM |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1650724B1 (en) * | 1968-01-31 | 1970-07-23 | Hurth Masch Zahnrad Carl | Lubricating device for gear with risk of corrosion when stationary |
-
1987
- 1987-01-23 DE DE19873702008 patent/DE3702008A1/en not_active Ceased
-
1988
- 1988-01-11 SE SE8800052A patent/SE8800052L/en not_active Application Discontinuation
- 1988-01-21 GB GB8801295A patent/GB2201200B/en not_active Expired - Fee Related
Cited By (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2810374A1 (en) * | 2000-06-19 | 2001-12-21 | Jeumont Ind | DEVICE FOR PRODUCING ELECTRIC CURRENT FROM WIND ENERGY |
| WO2001098655A1 (en) * | 2000-06-19 | 2001-12-27 | Jeumont S.A. | Device for producing electric current from wind energy |
| US6921243B2 (en) | 2000-06-19 | 2005-07-26 | Jeumont S.A. | Device for producing electric current from wind energy |
| WO2003031812A1 (en) * | 2001-10-05 | 2003-04-17 | Hansen Transmissions International Nv | Dry sump lubrication system with removable oil reservoir for wind turbine gearbox |
| WO2004083630A3 (en) * | 2003-03-21 | 2004-10-28 | Vestas Wind Sys As | Methods of moving the rotating means of a wind turbine during transportation or stand still, method of controlling the moving of the rotating means, nacelle, auxiliary device, control and monitoring system and use hereof |
| AU2003226903B2 (en) * | 2003-03-21 | 2007-10-18 | Vestas Wind Systems A/S | Methods of moving the rotating means of a wind turbine during transportation or stand still, method of controlling the moving of the rotating means, nacelle, auxiliary device, control and monitoring system and use hereof |
| US8118542B2 (en) | 2003-03-21 | 2012-02-21 | Vestas Wind Systems A/S | Method of moving the rotating means of a wind turbine during transportation or stand still, method of controlling the moving of the rotating means, nacelle, auxiliary device, control and monitoring system and use hereof |
| CN100375835C (en) * | 2003-03-21 | 2008-03-19 | 维斯塔斯风力系统有限公司 | Method for moving a rotating means of a wind turbine during transportation or stand still, method for controlling the movement of the rotating means, nacelle, auxiliary device, control and monitoring system and use thereof |
| US7600971B2 (en) | 2003-03-21 | 2009-10-13 | Vestas Wind Systems A/S | Methods of moving the rotating means of a wind turbine during transportation or stand still, method of controlling the moving of the rotating means, nacelle, auxiliary device, control and monitoring system and use hereof |
| US8827660B2 (en) | 2004-03-12 | 2014-09-09 | Vestas Wind Systems A/S | Variable capacity oil pump |
| AU2004317282B8 (en) * | 2004-03-12 | 2008-09-11 | Vestas Wind Systems A/S | A wind turbine with a fluid supply system and method |
| AU2004317282B2 (en) * | 2004-03-12 | 2008-06-05 | Vestas Wind Systems A/S | A wind turbine with a fluid supply system and method |
| CN1926337B (en) * | 2004-03-12 | 2012-09-05 | 维斯塔斯风力系统有限公司 | variable displacement oil pump |
| EP1723338B1 (en) * | 2004-03-12 | 2018-05-30 | Vestas Wind Systems A/S | Variable capacity oil pump |
| ES2321995A1 (en) * | 2005-10-05 | 2009-06-15 | Ascend Rmm, S.L. | Procedure for the change of oil wind turbines and mobile equipment for the change of oil wind turbines at heights of up to 100 meters. (Machine-translation by Google Translate, not legally binding) |
| ES2321995B1 (en) * | 2005-10-05 | 2010-03-03 | Ascend Rmm, S.L. | PROCEDURE FOR CHANGE OF OIL WIND OIL AND MOBILE EQUIPMENT FOR CHANGE OF OIL WIND OIL TO HEIGHTS OF UP TO 100 METERS. |
| KR101330709B1 (en) | 2006-05-23 | 2013-11-19 | 린컨 게엠베하 | Bearing arrangement and metering valve and suction device therefor |
| US8920037B2 (en) | 2006-05-23 | 2014-12-30 | Lincoln Gmbh | Bearing arrangement and metering valve and suction device therefor |
| WO2007134815A1 (en) * | 2006-05-23 | 2007-11-29 | Lincoln Gmbh | Bearing arrangement and metering valve and suction device therefor |
| WO2009147147A3 (en) * | 2008-06-02 | 2010-01-28 | Vestas Wind Systems A/S | A lubrication system for a gear system for a wind turbine |
| US8807922B2 (en) | 2008-06-02 | 2014-08-19 | Vestas Wind Systems, A/S | Lubrication system for a gear system for a wind turbine |
| CN102084128B (en) * | 2008-06-02 | 2013-05-22 | 维斯塔斯风力系统有限公司 | A lubrication system for a gear system for a wind turbine |
| EP2251566A4 (en) * | 2008-09-03 | 2011-07-20 | Mitsubishi Heavy Ind Ltd | Speed increasing gear lubrication device and method |
| US8997934B2 (en) | 2009-10-23 | 2015-04-07 | Vestas Wind Systems A/S | Lubrication system for a gear system providing emergency lubrication |
| WO2011048183A1 (en) | 2009-10-23 | 2011-04-28 | Vestas Wind Systems A/S | A lubrication system for a gear system providing emergency lubrication |
| US9086055B2 (en) * | 2010-01-11 | 2015-07-21 | General Electric Company | Lubrication of fluid turbine gearbox during idling or loss of electric grid |
| CN102853063A (en) * | 2011-06-28 | 2013-01-02 | 歌美飒创新技术公司 | Oil level maintenance system |
| ES2396813A1 (en) * | 2011-06-28 | 2013-02-27 | Gamesa Innovation & Technology, S.L. | Oil level maintenance system |
| EP2541057A1 (en) * | 2011-06-28 | 2013-01-02 | Gamesa Innovation & Technology, S.L. | Oil level maintenance system |
| EP2573388A1 (en) | 2011-09-22 | 2013-03-27 | Moventas Gears Oy | A method for controlling lubrication of a gear unit and a gear unit |
| CN103133670B (en) * | 2011-11-30 | 2016-12-21 | 西门子公司 | For commercial Application or the actuating device of wind power plant |
| US20130133454A1 (en) * | 2011-11-30 | 2013-05-30 | Thomas Barthel | Gear unit with improved lubricant supply |
| US9297454B2 (en) | 2011-11-30 | 2016-03-29 | Siemens Aktiengesellschaft | Gear unit with improved lubricant supply |
| CN103133670A (en) * | 2011-11-30 | 2013-06-05 | 西门子公司 | Gear for industrial applications or wind energy turbines |
| WO2013136056A1 (en) * | 2012-03-10 | 2013-09-19 | Romax Technology Limited | Overhead tank |
| US10060415B2 (en) | 2013-11-25 | 2018-08-28 | Zf Friedrichshafen Ag | Emergency lubrication for wind turbine gearboxes |
| US20160061190A1 (en) * | 2014-08-29 | 2016-03-03 | Siemens Aktiengesellschaft | Drive train and wind power plant with a drive train |
| US10006442B2 (en) * | 2014-08-29 | 2018-06-26 | Siemens Aktiengesellschaft | Drive train and wind power plant with a drive train |
| EP3040553A1 (en) * | 2014-12-29 | 2016-07-06 | Hitachi, Ltd. | Wind power generation station and gearbox |
| CN105605208A (en) * | 2016-03-02 | 2016-05-25 | 上海东海风力发电有限公司 | Connection protection device of oil delivery pipe of shipborne offshore wind power oil exchange device |
| CN105605208B (en) * | 2016-03-02 | 2018-06-01 | 上海东海风力发电有限公司 | Boat-carrying offshore wind farm change oil equipment petroleum pipeline connection protective device |
| CN110259926A (en) * | 2019-06-21 | 2019-09-20 | 嘉兴学院 | A kind of wind power generating set speed reducer automatic oil filtering device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3702008A1 (en) | 1988-08-04 |
| SE8800052D0 (en) | 1988-01-11 |
| GB2201200B (en) | 1990-08-08 |
| GB8801295D0 (en) | 1988-02-17 |
| SE8800052L (en) | 1988-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |