CN113217269A - Variable pre-cone angle device for wind wheel of wind turbine generator and use method - Google Patents

Variable pre-cone angle device for wind wheel of wind turbine generator and use method Download PDF

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Publication number
CN113217269A
CN113217269A CN202110536807.7A CN202110536807A CN113217269A CN 113217269 A CN113217269 A CN 113217269A CN 202110536807 A CN202110536807 A CN 202110536807A CN 113217269 A CN113217269 A CN 113217269A
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CN
China
Prior art keywords
wind turbine
blade
blade root
cone angle
variable
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Granted
Application number
CN202110536807.7A
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Chinese (zh)
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CN113217269B (en
Inventor
李媛
蔡安民
林伟荣
张林伟
郑磊
许扬
蔺雪峰
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN202110536807.7A priority Critical patent/CN113217269B/en
Publication of CN113217269A publication Critical patent/CN113217269A/en
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Publication of CN113217269B publication Critical patent/CN113217269B/en
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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
    • 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
    • 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
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • 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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04—Automatic control; Regulation
    • F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
    • 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
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/321—Wind directions
    • 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

Abstract

The invention provides a variable pre-cone angle device for a wind wheel of a wind turbine generator and a use method thereof, wherein the variable pre-cone angle device comprises a connecting seat, a hub, a blade root and blades; a hub is arranged outside the connecting seat, a blade root connecting section is connected to the hub, a blade root is connected to the blade root connecting section, and a blade is connected to the blade root; three convex columns are uniformly distributed on the connecting seat; a gear ring is arranged at the top of the convex column, a fixing groove is formed in the inner wall of the gear ring, and the variable-pitch bearing is installed in the gear ring through the fixing groove; the blade root is fixed on the variable pitch bearing; the blade root is provided with a slot, a fixing plate is arranged in the slot and connected with a motor base positioned outside the slot, and a motor is arranged on the motor base; the output shaft of the motor is connected with a tooth roller which is meshed with the gear ring. When the wind speed is low, the invention can reduce the taper angle of the blade, increase the wind sweeping area and improve the productivity and efficiency; when the wind speed is high or the deformation of the blade is high, the blade cone angle is increased, and the blade is prevented from colliding with a tower barrel due to the deformation and damaging equipment.

Description

Variable pre-cone angle device for wind wheel of wind turbine generator and use method
Technical Field
The invention belongs to the field of horizontal shaft wind turbine equipment, and particularly relates to a variable pre-cone angle device for a wind wheel of a wind turbine generator and a using method of the variable pre-cone angle device.
Background
Energy is the main material basis of social economy and human life, and is the motive force for driving the social development. However, the reserves of non-renewable energy sources such as petroleum, coal, natural gas, etc., which are major pillars of world energy, are decreasing, wind power generation is being developed in many countries in the world, and wind power generation has become a mature scale as a new energy source.
The rotor is one of the most important components for absorbing wind energy. Wind flows through the blades, the surface of the blades is disturbed to form torque and thrust, the blades are deformed, and when the wind speed changes, the torque changes, and the clearance of the blades also changes. In order to solve the clearance problem, the wind wheel is designed with an elevation angle, and the blades are designed with a pre-cone angle. Because the wind wheel pre-cone angle of the conventional unit is fixed, when the unit is developed in a large scale and the long and flexible blade tip deformation of a large wind turbine unit can reach 7-8 m, if the design is too small, the clearance requirement cannot be met, the blade deformation and the tower barrel can collide; if the design is too large, the effective wind sweeping area of the wind wheel is influenced, and the generating capacity is reduced.
Disclosure of Invention
The invention aims to provide a variable pre-cone angle device for a wind wheel of a wind turbine generator and a using method thereof, so as to solve the problems in the background technology. The novel wind power generation device is novel in structure, when the novel wind power generation device is used, the blades are pushed by the electric push rod to be inclined towards the inside or the outside simultaneously, so that the taper angle of the blades is changed, the adjustment is carried out in the face of different wind speed requirements, when the wind speed is low, the load of the blades is small, the deformation is small, the pre-taper angle can be reduced, the wind sweeping area is increased, and the generated energy is improved; under the condition of high wind speed or large blade deformation, the pre-cone angle is increased, the clearance risk is reduced, and the safety of the unit is improved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a variable pre-cone angle device for a wind wheel of a wind turbine generator comprises a connecting seat, a hub, a blade root and blades;
a hub is arranged outside the connecting seat, a blade root connecting section is connected to the hub, a blade root is connected to the blade root connecting section, and a blade is connected to the blade root;
three convex columns are uniformly distributed on the connecting seat; a gear ring is arranged at the top of the convex column, a fixing groove is formed in the inner wall of the gear ring, and the variable-pitch bearing is installed in the gear ring through the fixing groove;
the blade root is fixed on the variable pitch bearing;
the blade root is provided with a slot, a fixing plate is arranged in the slot and connected with a motor base positioned outside the slot, and a motor is arranged on the motor base; the output shaft of the motor is connected with a tooth roller which is meshed with the gear ring.
The invention further improves the following steps: the inner wall of the connecting seat is provided with four first electric push rods, the first electric push rods are distributed in a square shape, and the movable ends of the first electric push rods are matched with the pitch bearing.
The invention further improves the following steps: the internal connection of connecting seat has the base, install second electric putter on the base, the one side that the fixed plate is located the fluting is connected with spacing post, spacing post cooperatees with second electric putter.
The invention further improves the following steps: a supporting spring is fixed inside the slot, one end of the supporting spring is fixed on the side wall of the slot, and the other end of the supporting spring is fixed on the fixing plate.
The invention further improves the following steps: the outer wall of the variable-pitch bearing is connected with at least two fixing rods, the bearing is installed on the fixing rods, and the fixing rods are installed inside the fixing grooves through the bearing.
The invention further improves the following steps: the top of the blade root connecting section is provided with a ring groove, and two arc-shaped plates are arranged inside the ring groove; the gap between the two arc plates is matched with the blade root.
The invention further improves the following steps: the outer arc surface of the arc plate is connected with a plurality of outer rods, and inner rods are arranged inside the outer rods.
The invention further improves the following steps: the inner rod is connected with the outer rod through the spring.
A use method of a variable pre-cone angle device for a wind wheel of a wind turbine generator system comprises the following steps:
the starting motor drives the tooth rollers to rotate, the tooth rollers are matched with the gear ring, and the blade roots are stirred through the fixing plate to drive the blades and the variable-pitch bearing to synchronously rotate in the fixing groove;
the first electric push rods which are opposite at will push the pitch bearing to incline, and the pitch bearing is supported, limited and fixed for use by matching the first electric push rods during the inclining; the arc-shaped plate is extruded when the blades incline, and the inner rod is displaced by the spring in the outer rod to adapt to the inclination of the blades.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a variable pre-cone angle device for a wind wheel of a wind turbine generator, wherein a blade root is fixed on a variable-pitch bearing; the blade root is provided with a slot, a fixing plate is arranged in the slot and connected with a motor base positioned outside the slot, and a motor is arranged on the motor base; the output shaft of the motor is connected with a tooth roller which is meshed with the gear ring; by controlling the motor to rotate, the blade root can be shifted through the fixing plate to drive the whole blade and the variable-pitch bearing to rotate synchronously.
Furthermore, the inner wall of the connecting seat is provided with four first electric push rods, the first electric push rods are distributed in a square shape, and the movable ends of the first electric push rods are matched with the variable-pitch bearing; when the wind turbine blade is used, the electric push rod provides a supporting force for the variable-pitch bearing, the variable-pitch bearing can be pushed to incline through the electric push rod, so that the variable-pitch bearing drives the blade to incline, the blade cone angle is changed, the blade cone angle is reduced when the wind speed is low, the wind sweeping area is increased, and the productivity efficiency is improved; when the wind speed is high or the deformation of the blade is high, the blade cone angle is increased, and the blade is prevented from colliding with a tower barrel due to the deformation and damaging equipment.
Further, this variable cone angle device in advance of wind turbine generator system wind wheel separates with the gear circle through the tooth roller on the electric putter driving motor to make the whole slope that inclines of blade, the blade cooperatees with the arc and inclines, and the arc provides the leakproofness for the inside of blade root linkage segment, avoids the entering of foul, reduces maintenance cost and increases life.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a variable pre-cone angle device for a wind turbine rotor of a wind turbine generator system according to the present invention;
FIG. 2 is a schematic structural diagram of a connecting seat and a blade of the variable pre-cone angle device of a wind turbine generator system;
fig. 3 is a schematic structural diagram of a connecting seat and a fixing groove of the variable pre-cone angle device for a wind wheel of a wind turbine generator according to the present invention;
FIG. 4 is a schematic structural diagram of a variable-pitch bearing and a first electric push rod of the variable pre-cone angle device for the wind wheel of the wind turbine generator system;
FIG. 5 is a schematic sectional structure view of a connecting base of the variable pre-cone angle device for the wind wheel of the wind turbine generator system;
FIG. 6 is a schematic structural diagram of a blade root connecting section and an arc-shaped plate of the variable pre-cone angle device for the wind turbine of the wind turbine generator system;
fig. 7 is a schematic structural diagram of an arc-shaped plate of the variable pre-cone angle device for the wind wheel of the wind turbine generator system.
In the figure: 1. a tower drum; 2. a nacelle; 3. a main shaft; 4. a hub; 5. a blade root connection section; 6. a blade; 7. a blade root; 8. an inner rod; 9. a connecting seat; 10. a gear ring; 11. a pitch bearing; 12. a threaded hole; 13. fixing the disc; 14. fastening a bolt; 15. grooving; 16. a fixing plate; 17. a motor base; 18. a motor; 19. a tooth roller; 20. a first electric push rod; 21. fixing grooves; 22. a second electric push rod; 23. fixing the rod; 24. a bearing; 25. a base; 26. a support spring; 27. a limiting column; 28. a ring groove; 29. an arc-shaped plate; 30. an outer rod.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
Referring to fig. 1 to 7, the invention provides a variable pre-cone angle device for a wind wheel of a wind turbine generator, which comprises a tower barrel 1, wherein a nacelle 2 is installed at the top of the tower barrel 1, a main shaft 3 is installed on the nacelle 2, and the other end of the main shaft 3 is connected with a connecting seat 9; hub 4 is installed to connecting seat 9 externally, is connected with blade root linkage segment 5 on hub 4, is connected with blade root 7 on the blade root linkage segment 5, is connected with blade 6 on the blade root 7.
The connecting seat 9 is arranged in a Y shape and comprises three convex columns 91; the three convex columns 91 are uniformly arranged, and the included angle between each other is 120 degrees. The top of projection 91 is equipped with gear circle 10, and it has fixed slot 21 to open on the inner wall of gear circle 10, and it installs in gear circle 10 through fixed slot 21 to become oar bearing 11, and it has screw hole 12 to become to open on the oar bearing 11. The bottom of the blade root 7 is provided with a fixed plate 13, and the fixed plate 14 is in threaded connection with the threaded hole 12 through a fastening bolt 14 and is fixed on the variable pitch bearing 11. The variable-pitch bearing 11 is connected with a fixing rod 23, a bearing 24 is installed on the fixing rod 23, and the fixing rod 23 is installed inside the fixing groove 21 through the bearing 24.
The blade root 7 is provided with a slot 15, a fixing plate 16 is arranged in the slot 15, the fixing plate 16 is connected with a motor base 17 positioned on the outer side of the slot 15, and a motor 18 is arranged on the motor base 17. The output shaft of the motor 18 is connected with a tooth roller 19, and the tooth roller 19 is meshed with the gear ring 10.
Install first electric putter 20 on the inner wall of connecting seat 9, the quantity of first electric putter 20 is four, is square distribution between the first electric putter 20, and the expansion end of first electric putter 20 cooperatees with become oar bearing 11.
The internal connection of connecting seat 9 has base 25, installs three second electric putter 22 on the base 25, and the fixed plate 16 is located one side in fluting 15 and is connected with spacing post 27, and spacing post 27 cooperatees with corresponding second electric putter 22. The extension of the second electric push rod 22 can drive the fixing plate 16 through the limiting column 27, and further drive the toothed roller 19 to break away from the gear ring 10, so that the whole blade can adjust the whole inclination.
A supporting spring 26 is fixed in the slot 15, one end of the supporting spring 26 is fixed on the side wall of the slot 15, and the other end is fixed on the fixing plate 16.
The top of the blade root connecting section 5 is provided with a ring groove 28, and two arc-shaped plates 29 are arranged inside the ring groove 28; the gap between the two arc-shaped plates 29 is matched with the blade root 7.
The outer arc surface of the arc plate 29 is connected with at least three outer rods 30 which are uniformly distributed, and an inner rod 8 is arranged in each outer rod 30; the inner rod 8 and the outer rod 30 are elastically connected through a spring, and the inner rod 8 can be stressed to retract into the outer rod 30, so that the position of the arc-shaped plate 29 is changed.
Example 2
The invention also provides a use method of the variable pre-cone angle device for the wind wheel of the wind turbine generator, which comprises the following steps:
the method comprises the following steps: the power supply after the electricity generation is completed provides required electric energy for internal electric appliances, after each equipment is installed, the blades 6 are rotated under the blowing of wind energy, the rotation of the blades 6 enables the hub 4 and the spindle 3 to rotate, and therefore the spindle 3 converts kinetic energy transmission into electric energy for use.
Step two: the method comprises the steps that the pre-cone angle of a blade 6 is adjusted according to different conditions, when the method is used, a motor 18 is started to drive a tooth roller 19 to rotate according to different wind directions, the tooth roller 19 is matched with a gear ring 10, a blade root 7 is shifted through a fixing plate 16, the blade 6 is enabled to rotate on a variable pitch bearing 11 through a fixing plate 13, and the angle is adjusted; the pitch bearing 11 is rotated inside the fixation slot 21 by means of a fixation rod 23 and a bearing 24.
Step three: the pre-cone angle of the blade 6 needs to be adjusted, the second electric push rod 22 extends to drive the fixing plate 16 through the limiting column 27, and further drives the tooth roller 19 to be separated from the gear ring 10, so that the whole blade can be adjusted to be integrally inclined; promote through arbitrary oppositing first electric putter 20 and become oar bearing 11 and incline, cooperate through first electric putter 20 during the slope and support spacing fixed use to becoming oar bearing 11 to adjust the use under according to the different situation, extrude arc plate 29 when blade 6 inclines, make interior pole 8 carry out the displacement through the inside spring of outer pole 30, thereby according to the slope of blade 6 and the bank of cells.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (9)

1. A variable pre-cone angle device for a wind wheel of a wind turbine generator is characterized by comprising a connecting seat (9), a hub (4), a blade root (7) and blades (6);
a hub (4) is arranged outside the connecting seat (9), a blade root connecting section (5) is connected to the hub (4), a blade root (7) is connected to the blade root connecting section (5), and a blade (6) is connected to the blade root (7);
three convex columns (91) are uniformly distributed on the connecting seat (9); a gear ring (10) is arranged at the top of the convex column (91), a fixing groove (21) is formed in the inner wall of the gear ring (10), and a variable-pitch bearing (11) is installed in the gear ring (10) through the fixing groove (21);
the blade root (7) is fixed on the variable pitch bearing (11);
the blade root (7) is provided with a slot (15), a fixing plate (16) is arranged in the slot (15), the fixing plate (16) is connected with a motor base (17) positioned on the outer side of the slot (15), and a motor (18) is arranged on the motor base (17); an output shaft of the motor (18) is connected with a tooth roller (19), and the tooth roller (19) is meshed with the gear ring (10).
2. The variable pre-cone angle device for the wind turbine of the wind turbine generator set according to claim 1, wherein the inner wall of the connecting seat (9) is provided with four first electric push rods (20), the first electric push rods (20) are distributed in a square shape, and the movable end of each first electric push rod (20) is matched with the variable-pitch bearing (11).
3. The variable pre-cone angle device for the wind wheel of the wind turbine generator set according to claim 1, characterized in that a base (25) is connected to the inside of the connecting seat (9), a second electric push rod (22) is installed on the base (25), a limiting column (27) is connected to one side of the fixing plate (16) located in the slot (15), and the limiting column (27) is matched with the second electric push rod (22).
4. The variable pre-cone angle device for the wind turbine rotor of the wind turbine generator set according to claim 1, characterized in that a supporting spring (26) is fixed inside the slot (15), one end of the supporting spring (26) is fixed on the side wall of the slot (15), and the other end is fixed on the fixing plate (16).
5. The variable pre-cone angle device for the wind turbine rotor of the wind turbine generator set according to claim 1, characterized in that at least two fixing rods (23) are connected to the outer wall of the pitch bearing (11), a bearing (24) is installed on each fixing rod (23), and each fixing rod (23) is installed inside each fixing groove (21) through the bearing (24).
6. The variable pre-cone angle device for the wind turbine rotor of the wind turbine generator set according to claim 1, characterized in that a ring groove (28) is formed at the top of the blade root connecting section (5), and two arc-shaped plates (29) are installed inside the ring groove (28); the gap between the two arc plates (29) is matched with the blade root (7).
7. The variable pre-cone angle device for the wind turbine rotor of the wind turbine generator set according to claim 6, characterized in that a plurality of outer rods (30) are connected to the outer arc surface of the arc-shaped plate (29), and an inner rod (8) is installed inside the outer rods (30).
8. The variable pre-cone angle device for a wind turbine rotor according to claim 7, characterized in that the outer rod (30) has a cavity inside, a spring is installed in the cavity, and the outer rod (30) is connected with the inner rod (8) through the spring.
9. The use method of the variable pre-cone angle device for the wind wheel of the wind turbine generator is characterized by comprising the following steps of:
a motor (18) is started to drive a tooth roller (19) to rotate, the tooth roller (19) is matched with a gear ring (10), a blade root (7) is shifted through a fixing plate (16), and a blade (6) and a variable-pitch bearing (11) are driven to synchronously rotate in a fixing groove (21);
the first electric push rods (20) which are opposite at will push the pitch bearing (11) to incline, and the first electric push rods (20) are matched to support, limit and fix the pitch bearing (11) during inclining; when the blade (6) inclines, the arc-shaped plate (29) is extruded, and the inner rod (8) is displaced through a spring in the outer rod (30) to adapt to the inclination of the blade (6).
CN202110536807.7A 2021-05-17 2021-05-17 Variable pre-cone angle device for wind wheel of wind turbine generator and use method Active CN113217269B (en)

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CN202110536807.7A CN113217269B (en) 2021-05-17 2021-05-17 Variable pre-cone angle device for wind wheel of wind turbine generator and use method

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Application Number Priority Date Filing Date Title
CN202110536807.7A CN113217269B (en) 2021-05-17 2021-05-17 Variable pre-cone angle device for wind wheel of wind turbine generator and use method

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CN113217269B CN113217269B (en) 2022-05-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039777A2 (en) * 2009-10-01 2011-04-07 Varadharajan Ponnudurai System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine
US20130330194A1 (en) * 2012-06-12 2013-12-12 General Electric Company Root extender for a wind turbine rotor blade
CN203978718U (en) * 2014-06-13 2014-12-03 东方电气集团东方汽轮机有限公司 Wind turbines rotor regulating device and the wind power generating set that comprises this device
CN206555069U (en) * 2016-09-27 2017-10-13 吉瑞德新能源科技(天津)有限公司 A kind of wind-driven generator pitching drive mechanism
CN209892383U (en) * 2019-05-19 2020-01-03 张向阳 Wind wheel device of wind driven generator with tiltable blades

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039777A2 (en) * 2009-10-01 2011-04-07 Varadharajan Ponnudurai System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine
US20130330194A1 (en) * 2012-06-12 2013-12-12 General Electric Company Root extender for a wind turbine rotor blade
CN203978718U (en) * 2014-06-13 2014-12-03 东方电气集团东方汽轮机有限公司 Wind turbines rotor regulating device and the wind power generating set that comprises this device
CN206555069U (en) * 2016-09-27 2017-10-13 吉瑞德新能源科技(天津)有限公司 A kind of wind-driven generator pitching drive mechanism
CN209892383U (en) * 2019-05-19 2020-01-03 张向阳 Wind wheel device of wind driven generator with tiltable blades

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