CN201347838Y - Hydraulic system for wind generating set - Google Patents
Hydraulic system for wind generating set Download PDFInfo
- Publication number
- CN201347838Y CN201347838Y CNU2009200666233U CN200920066623U CN201347838Y CN 201347838 Y CN201347838 Y CN 201347838Y CN U2009200666233 U CNU2009200666233 U CN U2009200666233U CN 200920066623 U CN200920066623 U CN 200920066623U CN 201347838 Y CN201347838 Y CN 201347838Y
- Authority
- CN
- China
- Prior art keywords
- valve
- subsystem
- electromagnetic valve
- brake
- oil
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- Fluid-Pressure Circuits (AREA)
- Wind Motors (AREA)
Abstract
The utility model relates to a hydraulic system for a wind generating set, which comprises a hydraulic station, a variable pitch mechanism and an oil supply subsystem and a variable pitch controlling subsystem connected with the hydraulic station, wherein the oil supply subsystem comprises an oil tank, a motor pump package, a filter, a safety valve, a cabin accumulator set, a level gauge and a temperature sensor arranged on the side of the oil tank, and an air filter and a liquid level and liquid temperature switch connected at the top of the oil tank; and the variable pitch controlling subsystem comprises a servo valve, a balance valve and a variable pitch controlling oil cylinder. The utility model provides the hydraulic variable pitch control and the braking control for the wind generating set, simultaneously realizes the self-pressure control, liquid level control and temperature control of the hydraulic system, and ensures the safe and stable operation of the wind generating set.
Description
Technical field
The utility model relates to a kind of hydraulic system that is used for wind power generating set.
Background technique
Wind-power electricity generation can energy saving, and reduce and pollute, be the emerging energy that China greatly develops at present.Wind power generating set is also to large scale development, present main force's type has reached MW class, yet in the prior art, the hydraulic system that Shang Weiyou is supporting with it, therefore, for adapting to the development of wind-power electricity generation cause, the professional person presses for the hydraulic system of designing with MW class wind turbine assembly cover in the industry.
The model utility content
In order to solve problem in the above-mentioned prior art, the utility model aims to provide a kind of integrated hydraulic system that is used for wind power generating set, for wind power generating set provides hydraulic vane change control and brake control, realize pressure control, liquid level control and the temperature control of hydraulic system self simultaneously, to guarantee the wind power generating set safe and stable operation.
A kind of hydraulic system that is used for wind power generating set described in the utility model comprises hydraulic station and blade pitch device, it is characterized in that, it also comprises oil supply subsystem and the change oar control subsystem that is connected with described hydraulic station, wherein:
Described oil supply subsystem comprises fuel tank, electric-motor pump group, filter, safety valve, cabin accumulator group, the air-strainer and the liquid level liquid temperature switch that are arranged on the level meter and the temperature transducer of described fuel tank side and are connected described fuel tank top, wherein, one end of described electric-motor pump group is connected with fuel tank, its the other end is connected with an end of described filter, and the other end of this filter is connected with cabin accumulator group with described safety valve respectively;
Described change oar control subsystem comprises servovalve, equilibrium valve and change oar control oil cylinder, wherein, one end of described servovalve is connected with described oil supply subsystem, the other end is connected with an end of described equilibrium valve, and the other end of equilibrium valve is connected with described change oar control oil cylinder by a swivel joint.
In the above-mentioned hydraulic system that is used for wind power generating set, also comprise the driftage brake control subsystem, main shaft brake control subsystem, change oar secure subsystem and the bypass circuit filtration cooling subsystem that are connected with described oil supply subsystem.
In the above-mentioned hydraulic system that is used for wind power generating set, described driftage brake control subsystem comprises driftage brake control electromagnetic valve, remove driftage brake control electromagnetic valve, the driftage brake oil cylinder, be used to set the relief valve of brake pretightening force, driftage brake buffering accumulator and brake keep accumulator, wherein, one end of described driftage brake control electromagnetic valve keeps accumulator and oil supply subsystem to be connected with described brake respectively, the other end cushions accumulator with described driftage brake successively, the driftage brake oil cylinder, relief valve and the end connection of removing driftage brake control electromagnetic valve, the other end of described releasing driftage brake control electromagnetic valve is connected with described oil supply subsystem.
In the above-mentioned hydraulic system that is used for wind power generating set, described main shaft brake control subsystem comprises the oil-feed reduction valve, in line check valve, main shaft brake buffering accumulator and that be connected with this main shaft brake buffering accumulator simultaneously and main shaft brake control electromagnetic valve connection parallel with one another, the Emergency braking control electromagnetic valve, remove main shaft brake control electromagnetic valve and hand pump, wherein, one end of described oil-feed reduction valve is connected with described oil supply subsystem, the other end is connected with an end of described in line check valve, the other end of described in line check valve respectively with described hand pump, main shaft brake control electromagnetic valve, the Emergency braking control electromagnetic valve is connected with releasing main shaft brake control electromagnetic valve.
In the above-mentioned hydraulic system that is used for wind power generating set, described change oar secure subsystem comprises the solenoid directional control valve that is connected with described oil supply subsystem, the safe oil cylinder control module of three covers that is connected with this solenoid directional control valve, change oar safety oil cylinder and the accumulator that is connected with the safe oil cylinder controll block of every cover respectively, wherein, the safe oil cylinder control module of described every cover comprises interconnective cartridge valve and Pilot operated check valve.
In the above-mentioned hydraulic system that is used for wind power generating set, described bypass circuit is filtered cooling subsystem and is comprised interconnective by motor-operated oil pump, cooler and filter.
In the above-mentioned hydraulic system that is used for wind power generating set, the electric-motor pump group in the described oil supply subsystem is a duplex gear pump.
Owing to adopted above-mentioned technical solution, the utility model can guarantee the wind power generating set safe and stable operation.At first, it provides hydraulic vane change control for wind power generating set, becomes the accurate control that the oar control subsystem provides wind power generator oar blade, changes the angle of blade as requested, output stable rotating speed and power.Become the oar secure subsystem and nonserviceable down, utilize the accumulator energy stored to promote safe oil cylinder drive blade and get back to feather position, guarantee wind-power electricity generation function dead halt.Secondly, it provides the control of wind generating set yaw brake, brake in the wind driven generator yaw process and unclamps, and keeps under the driftage state stopping tightly stopping.After the shutdown, utilize the accumulator energy stored to keep the tight state of stopping of driftage brake.Once more, it provides wind driven generation set main shaft brake control, at accident or inspecting state, wind-driven generator is stopped operating and keeps braking state, is divided into normal braking and Emergency braking, and two kinds of brake speeds are provided as required.
Description of drawings
Fig. 1 is a kind of system architecture schematic representation that is used for the hydraulic system most preferred embodiment of wind power generating set of the utility model.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model, it is a kind of hydraulic system that is used for wind power generating set, comprise hydraulic station (not shown), blade pitch device (not shown), oil supply subsystem 1 ', change oar control subsystem 2 ', the driftage brake control subsystem 3 ', the main shaft brake control subsystem 4 ' that are connected with oil supply subsystem 1 ', become oar secure subsystem 5 ' and bypass circuit filtration cooling subsystem 6 ', wherein:
Oil supply subsystem 1 ' comprises fuel tank 40, electric-motor pump group 1, two filters 31,32, two safety valves 91,92, one group of cabin accumulator group 18 (comprises 50 liters of cabin accumulators 181 of three covers, 182,183), the air-strainer 41 and the liquid level liquid temperature switch 36 that are arranged on the level meter 34 and the temperature transducer 35 of fuel tank 40 sides and are connected fuel tank 40 tops, wherein, fuel tank 40 is welded by steel plate, adopt inside and outside Oiltank structure, interior fuel tank holds the required hydraulic oil of work, externally mounted fuel tank can be admitted the hydraulic oil that leaks in fault or the maintenance process, guarantees to be unlikely to pollute wind-driven generator ground.
Electric-motor pump group 1 is the duplex gear pump group, an end of two gear pumps is connected with fuel tank 40 in the electric-motor pump group 1, the other end divides two-way respectively independently to becoming oar control subsystem 2 ' and becoming oar secure subsystem 5 ' fuel feeding, one the tunnel connects filter 31, safety valve 91 and cabin accumulator 181 successively, another road connects filter 32, safety valve 92 and cabin accumulator 182,183 successively, thereby has strengthened the reliability of change oar control subsystem 2 ' and change oar secure subsystem 5 '.
Cabin accumulator group 18 is arranged near the hydraulic station, is used for stored energy and for whole hydraulic system provides power, and during 1 work of electric-motor pump group, accumulator group 18 is oil-filled to the cabin; When pressure reaches the capping value, electric-motor pump group 1 unloading, by cabin accumulator group 18 to whole hydraulic system fuel feeding; When pressure dropped to lower limit set value, 1 carrying of electric-motor pump group continued oil-filled to cabin accumulator group 18.
Become oar control subsystem 2 ' and comprise that servovalve 33, two equilibrium valves 281,282 and three covers become oars control oil cylinders 261,262,263, wherein, one end of servovalve 33 divides two-way to be connected with oil supply subsystem 1 ', the other end is connected with an end of equilibrium valve 281,282 respectively, and the other end of equilibrium valve 281,282 is connected with change oar control oil cylinder 261,262,263 respectively by a swivel joint 39; Servovalve 33, equilibrium valve 281,282 are integrated on the control valve group of hydraulic station, become oar control oil cylinder 261,262,263 and are arranged in the hub of wind power generator, directly link to each other with blade pitch device.
The working principle that becomes oar control subsystem 2 ' is: servovalve 33, the control system that becomes oar control oil cylinder 261,262,263 and wind-driven generator and displacement transducer are formed closed loop.When wind-driven generator need become oar because of working conditions change, wind power generator control system sends signal and gives servovalve 33, by servovalve 33 electrical signal is changed into hydraulic pressure signal, output flow is given and is become oar control oil cylinder 261,262,263, become oar control oil cylinder 261,262,263 promotion blade pitch devices and become oar, the position signal that the displacement transducer of while wind-driven generator will become oar control oil cylinder 261,262,263 feeds back to wind power generator control system.After becoming oar control oil cylinder 261,262,263 motion arrival desired locations, the difference of command signal and feedback signal is zero, and the input signal on the servovalve 33 is zero, and output flow also is zero, become oar control oil cylinder 261,262,263 and keep motionless, finish the control of change oar.
Driftage brake control subsystem 3 ' adopts zero leakage thread cartridge valve arrangement, be integrated on the control valve group of hydraulic station, it comprises driftage brake control electromagnetic valve 51, remove driftage brake control electromagnetic valve 6, driftage brake oil cylinder 52, be used to set the relief valve 13 of brake pretightening force, driftage brake buffering accumulator 161 and brake keep accumulator 17, wherein, one end of driftage brake control electromagnetic valve 51 keeps accumulator 17 and oil supply subsystem 1 ' to be connected with brake respectively, the other end connects driftage brake buffering accumulator 161 successively, driftage brake oil cylinder 52, a relief valve 13 and an end of removing driftage brake control electromagnetic valve 6, the other end of removing driftage brake control electromagnetic valve 6 is connected with oil supply subsystem 1 '.
The driftage brake control subsystem 3 ' working principle be: when wind-driven generator at work, the pressure oil that oil supply subsystem 1 ' provides enters into driftage brake oil cylinder 52 by driftage brake control electromagnetic valve 51, at this moment be in closed condition because remove driftage brake control electromagnetic valve 6, driftage brake oil cylinder 52 build-up pressures keep brake to be in the tight state of stopping; When wind-driven generator need be gone off course, driftage brake control electromagnetic valve 51 and releasing driftage brake control electromagnetic valve 6 are switched on simultaneously, driftage brake control electromagnetic valve 51 is closed, removing driftage brake control electromagnetic valve 6 opens, pressure oil in the driftage brake oil cylinder 52 is got back to fuel tank 40 by relief valve 13, releasing driftage brake control electromagnetic valve 6, and brake is decontroled.Relief valve 13 provides a minimum brake tight power of stopping.Driftage brake buffering accumulator 161 is used for the buffering of brake, and brake keeps accumulator 17 to provide power to driftage brake oil cylinder 52, is used for keeping under the termination of pumping state brake to be in the tight state of stopping.
Main shaft brake control subsystem 4 ' adopts zero leakage thread cartridge valve arrangement, is integrated on the valve piece of hydraulic station.It specifically comprises oil-feed reduction valve 42, in line check valve 432, the main shaft brake control electromagnetic valve 451 of main shaft brake buffering accumulator 162 and connection parallel with one another, Emergency braking control electromagnetic valve 452, remove main shaft brake control electromagnetic valve 46 and hand pump 48, wherein, one end of oil-feed reduction valve 42 is connected 1 ' with oil supply subsystem, the other end is connected with an end of in line check valve 432, the other end of in line check valve 432 respectively with hand pump 48, Emergency braking control electromagnetic valve 452 connects, simultaneously respectively by throttle valve 441,442 with main shaft brake control electromagnetic valve 451, after removing 46 connections of main shaft brake control electromagnetic valve, be connected with main shaft brake buffering accumulator 162 again; Emergency braking control electromagnetic valve 452 also is connected with a main shaft brake oil cylinder 44.
The working principle of main shaft brake control subsystem 4 ' is: pressure oil is adjusted to the required working pressure of brake through oil-feed reduction valve 42, enters the brake control loop behind in line check valve 432.During proper functioning, main shaft brake control electromagnetic valve 451, Emergency braking control electromagnetic valve 452 are in closed condition, remove main shaft brake control electromagnetic valve 46 and are in open mode, and the main shaft brake is decontroled.When wind power generator control system sends brake signal, 451 energisings of main shaft brake control electromagnetic valve, pressure oil enters into main shaft brake oil cylinder 44, remove 46 energisings of main shaft brake control electromagnetic valve simultaneously, oil circuit is closed, main shaft brake oil cylinder 44 build-up pressures, and brake is in the tight state of stopping.When main shaft brake control electromagnetic valve 451, when removing 46 outages of main shaft brake control electromagnetic valve, brake is decontroled.Throttle valve 441,442 is used to regulate the speed of brake and brake relieving.When being in an emergency, main shaft brake control electromagnetic valve 451, Emergency braking control electromagnetic valve 452, releasing main shaft brake control electromagnetic valve 46 are switched on the brake quick acting simultaneously.When hydraulic system runs out of steam, can manually press the button of removing on the main shaft brake control electromagnetic valve 46, make this releasing main shaft brake control electromagnetic valve 46 be in closed condition, manually-operable hand pump 48 delivery pressures make brake be in the tight state of stopping.Main shaft brake buffering accumulator 162 is used for the buffering of brake, and pressure switch is sent the brake signal and given wind power generator control system.
Become three change oar safety oil cylinder 251,252,253 and the accumulators 191,192,193 that overlap safe oil cylinder control module 271,272,273, are connected with the safe oil cylinder controll block of every cover respectively that oar secure subsystem 5 ' comprises the solenoid directional control valve 30 that is connected with oil supply subsystem 1 ', is connected with this solenoid directional control valve 30 by swivel joint 39, wherein, solenoid directional control valve 30 is integrated on the control valve group of hydraulic station, become oar safety oil cylinder 251,252,253 and be arranged in the hub of wind power generator, directly link to each other with blade pitch device; The safe oil cylinder control module 271,272,273 of three covers is joined three cover accumulators 191,192,193 and is controlled three cover change oar safety oil cylinders 251,252,253 independently of one another.The safe oil cylinder control module 271,272,273 of three covers comprises interconnective cartridge valve 41 and Pilot operated check valve 121, cartridge valve 42 and Pilot operated check valve 122, cartridge valve 43 and Pilot operated check valve 123 respectively.
The working principle that becomes oar secure subsystem 5 ' is: solenoid directional control valve 30 becomes the action of oar safety oil cylinder 251,252,253 by safe oil cylinder control module 271,272,273 controls, when solenoid directional control valve 30 energisings, pressure oil, drives blade and turns to full oar position to becoming oar safety oil cylinder 251,252,253 by solenoid directional control valve 30.When solenoid directional control valve 30 outages, become oar safety oil cylinder 251,252,253 drive blades and get back to feather position.Safe oil cylinder control module 271,272,273 and accumulator 191,192,193 are used for the safety control of wind-driven generator.When hydraulic system ran out of steam, the pressure oil that stores in the accumulator 191,192,193 arrived change oar safety oil cylinder 251,252,253 through cartridge valve 41,42,43, Pilot operated check valve 121,122,123, promotes blade to feather position.
Bypass circuit is filtered cooling subsystem 6 ' and is comprised interconnective by motor-operated oil pump 61, cooler 62 and accurate filter 63.The working principle that bypass circuit is filtered cooling subsystem 6 ' is: oil pump 61 from fuel tank 40 interior sucking-offs, behind filter 63 and cooler 62, returns fuel tank 40 with hydraulic oil.Filter 63 is used for filtering the impurity of hydraulic oil, has the pressure reduction warning function, when the front and back of filter 63 pressure reduction surpasses alarming value, can send filter core and stop up warning; When the front and back of filter 63 pressure reduction surpassed setting value, the bypass valve (not shown) of filter 63 inside was opened, and the protection filter core is not crushed.Cooler 62 is controlled by thermostat valve 64, and when the temperature of hydraulic oil was lower than setting value I, the hydraulic oil cooler 62 of not flowing through was by bypass duct oil sump tank 40; When the temperature of hydraulic oil was higher than setting value I but is lower than setting value II, hydraulic oil was simultaneously through supercooler 62 and bypass duct oil sump tank 40; When the temperature of hydraulic oil was higher than setting value II, hydraulic oil was all by cooler 62 oil sump tanks 40.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (7)
1. a hydraulic system that is used for wind power generating set comprises hydraulic station and blade pitch device, it is characterized in that, it also comprises oil supply subsystem and the change oar control subsystem that is connected with described hydraulic station, wherein:
Described oil supply subsystem comprises fuel tank, electric-motor pump group, filter, safety valve, cabin accumulator group, the air-strainer and the liquid level liquid temperature switch that are arranged on the level meter and the temperature transducer of described fuel tank side and are connected described fuel tank top, wherein, one end of described electric-motor pump group is connected with fuel tank, its the other end is connected with an end of described filter, and the other end of this filter is connected with cabin accumulator group with described safety valve respectively;
Described change oar control subsystem comprises servovalve, equilibrium valve and change oar control oil cylinder, wherein, one end of described servovalve is connected with described oil supply subsystem, the other end is connected with an end of described equilibrium valve, and the other end of equilibrium valve is connected with described change oar control oil cylinder by a swivel joint.
2. the hydraulic system that is used for wind power generating set according to claim 1, it is characterized in that it also comprises driftage brake control subsystem, main shaft brake control subsystem, change oar secure subsystem and the bypass circuit filtration cooling subsystem that is connected with described oil supply subsystem.
3. the hydraulic system that is used for wind power generating set according to claim 2, it is characterized in that, described driftage brake control subsystem comprises driftage brake control electromagnetic valve, remove driftage brake control electromagnetic valve, the driftage brake oil cylinder, be used to set the relief valve of brake pretightening force, driftage brake buffering accumulator and brake keep accumulator, wherein, one end of described driftage brake control electromagnetic valve keeps accumulator and oil supply subsystem to be connected with described brake respectively, the other end cushions accumulator with described driftage brake successively, the driftage brake oil cylinder, relief valve and the end connection of removing driftage brake control electromagnetic valve, the other end of described releasing driftage brake control electromagnetic valve is connected with described oil supply subsystem.
4. according to claim 2 or the 3 described hydraulic systems that are used for wind power generating set, it is characterized in that, described main shaft brake control subsystem comprises the oil-feed reduction valve, in line check valve, main shaft brake buffering accumulator and that be connected with this main shaft brake buffering accumulator simultaneously and main shaft brake control electromagnetic valve connection parallel with one another, the Emergency braking control electromagnetic valve, remove main shaft brake control electromagnetic valve and hand pump, wherein, one end of described oil-feed reduction valve is connected with described oil supply subsystem, the other end is connected with an end of described in line check valve, the other end of described in line check valve respectively with described hand pump, main shaft brake control electromagnetic valve, the Emergency braking control electromagnetic valve is connected with releasing main shaft brake control electromagnetic valve.
5. according to claim 2, the 3 or 4 described hydraulic systems that are used for wind power generating set, it is characterized in that, described change oar secure subsystem comprises the solenoid directional control valve that is connected with described oil supply subsystem, the safe oil cylinder control module of three covers that is connected with this solenoid directional control valve, change oar safety oil cylinder and the accumulator that is connected with the safe oil cylinder controll block of every cover respectively, wherein, the safe oil cylinder control module of described every cover comprises interconnective cartridge valve and Pilot operated check valve.
6. according to any described hydraulic system that is used for wind power generating set among the claim 2-5, it is characterized in that described bypass circuit is filtered cooling subsystem and comprised interconnective by motor-operated oil pump, cooler and filter.
7. the hydraulic system that is used for wind power generating set according to claim 1 and 2 is characterized in that, the electric-motor pump group in the described oil supply subsystem is a duplex gear pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200666233U CN201347838Y (en) | 2009-01-08 | 2009-01-08 | Hydraulic system for wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200666233U CN201347838Y (en) | 2009-01-08 | 2009-01-08 | Hydraulic system for wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347838Y true CN201347838Y (en) | 2009-11-18 |
Family
ID=41367308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200666233U Expired - Lifetime CN201347838Y (en) | 2009-01-08 | 2009-01-08 | Hydraulic system for wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201347838Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477944A (en) * | 2010-11-26 | 2012-05-30 | 维斯塔斯风力***有限公司 | Pilot circuitry for controlling the emergency feathering of wind turbine |
| CN102720729A (en) * | 2012-06-28 | 2012-10-10 | 浙江欧华造船有限公司 | Hydraulic integration system for building ship in modularization mode |
| CN103629278A (en) * | 2013-11-21 | 2014-03-12 | 北京金风科创风电设备有限公司 | Locking hydraulic system of wind driven generator |
| CN107829877A (en) * | 2017-11-02 | 2018-03-23 | 北京三力新能科技有限公司 | A kind of wind power generating set low-temperature starting control method |
| CN108071619A (en) * | 2017-12-13 | 2018-05-25 | 新疆金风科技股份有限公司 | Variable pitch hydraulic system and wind power generating set |
-
2009
- 2009-01-08 CN CNU2009200666233U patent/CN201347838Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477944A (en) * | 2010-11-26 | 2012-05-30 | 维斯塔斯风力***有限公司 | Pilot circuitry for controlling the emergency feathering of wind turbine |
| CN102477944B (en) * | 2010-11-26 | 2014-07-23 | 维斯塔斯风力***有限公司 | Pilot circuitry for controlling the emergency feathering of wind turbine |
| CN102720729A (en) * | 2012-06-28 | 2012-10-10 | 浙江欧华造船有限公司 | Hydraulic integration system for building ship in modularization mode |
| CN103629278A (en) * | 2013-11-21 | 2014-03-12 | 北京金风科创风电设备有限公司 | Locking hydraulic system of wind driven generator |
| CN107829877A (en) * | 2017-11-02 | 2018-03-23 | 北京三力新能科技有限公司 | A kind of wind power generating set low-temperature starting control method |
| CN108071619A (en) * | 2017-12-13 | 2018-05-25 | 新疆金风科技股份有限公司 | Variable pitch hydraulic system and wind power generating set |
| CN108071619B (en) * | 2017-12-13 | 2020-03-17 | 新疆金风科技股份有限公司 | Variable-pitch hydraulic system and wind generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106870289B (en) | Hydrostatic energy storage type hydraulic drive wind generating set and control method | |
| CN201347838Y (en) | Hydraulic system for wind generating set | |
| CN101476543B (en) | Off-course driving device of non-off course gear used for aerogenerator | |
| CN205370659U (en) | Hydraulic pressure governing system that steam turbine was used | |
| CN103994030A (en) | Variable speed constant frequency wind power generation system integrated with energy storing device and control methods | |
| CN201461236U (en) | Pitch of blade adjusting device for controlling wind wheel | |
| CN101498281B (en) | Direct drive type hydraulic variable pitch controlling mechanism for wind power generator | |
| CN201344094Y (en) | Mechanism for controlling steering, blade pitching and braking of wind power equipment | |
| CN101576058B (en) | Hydraulic control system of wind power generating device | |
| CN201620919U (en) | Split type self-contained electro-hydraulic actuator | |
| CN101487447B (en) | Off-course driving device of wind-driven generator | |
| CN101813104A (en) | Quickly-propelled low-power and energy-saving hydraulic servo-actuator | |
| CN105649874B (en) | Based on modular MW class offshore wind generating redundant hydraulic system and method | |
| CN101871423B (en) | Pitch adjusting system of rotation type hydraulic proportional servo drive motor | |
| CN207935183U (en) | A kind of hydraulic energy-accumulating type wind power generating set | |
| CN102733360B (en) | Emergency operation device and gate system of winch hoist | |
| CN201635929U (en) | Direct-drive volume control type pitch system of wind-driven generator | |
| US11542918B2 (en) | Method of controlling a blade pitch angle of a wind turbine by use of a hydraulic system | |
| CN206738078U (en) | A kind of hydraulic drive type wind power generating set | |
| CN201650941U (en) | Unidirectional and quick-retracting battery solution servo system | |
| CN104747371A (en) | Wind turbine generator hydraulic braking power device with electronic control wind wheel locking effect | |
| CN206738065U (en) | A kind of hydrostatic storage formula hydraulic drive type wind power generating set | |
| CN107420356A (en) | A kind of energy-saving hydraulic pumping plant for TRT fast cut valves | |
| CN209370181U (en) | Hydraulic control system in wind power equipment | |
| CN201574985U (en) | Rapid propelling low-power energy-saving hydraulic servo system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
|
| CX01 | Expiry of patent term |