CN114909253A - Wind power blade and wind driven generator - Google Patents

Wind power blade and wind driven generator Download PDF

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Publication number
CN114909253A
CN114909253A CN202210547470.4A CN202210547470A CN114909253A CN 114909253 A CN114909253 A CN 114909253A CN 202210547470 A CN202210547470 A CN 202210547470A CN 114909253 A CN114909253 A CN 114909253A
Authority
CN
China
Prior art keywords
wind
blade
winglet
blade body
section
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.)
Pending
Application number
CN202210547470.4A
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Chinese (zh)
Inventor
李�荣
赵鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Bobi Wind Power Science & Technology Co ltd
Original Assignee
Beijing Bobi Wind Power Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Bobi Wind Power Science & Technology Co ltd filed Critical Beijing Bobi Wind Power Science & Technology Co ltd
Priority to CN202210547470.4A priority Critical patent/CN114909253A/en
Publication of CN114909253A publication Critical patent/CN114909253A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • 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
    • F03D7/04—Automatic control; Regulation
    • F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

The application relates to the technical field of wind power generation, in particular to a wind power blade and a wind driven generator. The wind power blade comprises a blade body and a blade tip winglet; wherein the winglet is rotatably connected to the distal end of the blade body; the winglet extends in the direction of extension of the blade body, or the winglet extends in a bent manner. This wind-powered electricity generation blade can rotate for the blade body through the winglet to and make the winglet extend along the extending direction of blade body, or the winglet is buckled and is extended. Therefore, the wind power blades can be aligned to wind more accurately, wind energy is utilized to the maximum extent, the influence of tip turbulence is further weakened, the wind energy utilization coefficient Cp value is improved, and the power generation efficiency of the wind driven generator is further improved.

Description

Wind power blade and wind driven generator
Technical Field
The application relates to the technical field of wind power generation, in particular to a wind power blade and a wind driven generator.
Background
The tip of the wind power blade can form turbulent flow in the normal operation process of the wind driven generator blade, the turbulent flow can interfere the wind power blade to absorb wind energy, the lift force of the wind power blade is reduced, and the wind driven generator cannot utilize the wind energy more accurately.
Disclosure of Invention
The application provides a wind-powered electricity generation blade and aerogenerator to improve above-mentioned problem.
The invention is particularly such that:
a wind power blade comprises a blade body and a winglet;
the winglet is rotatably connected with the distal end of the blade body;
the winglet extends in the direction of extension of the blade body, or the winglet extends in a bent manner.
In one embodiment of the invention, the plane of rotation of the winglet relative to the blade body in the direction of extension of the blade body is perpendicular to the direction of extension of the blade body.
In an embodiment of the invention, the distal end of the blade body is provided with a first cavity, and the wind power blade further includes a first driving unit accommodated in the first cavity, and the first driving unit is configured to drive the winglet to rotate relative to the blade body.
In one embodiment of the invention, a winglet includes a first section and a second section, the first section being connected to the second section; one end of the second subsection, which is far away from the first subsection, is rotatably connected with the far end of the blade body;
the first subsection and the second subsection extend along the extending direction of the blade body, or the first subsection and the second subsection are connected in an included angle.
In one embodiment of the invention, the cross-sections of the blade body, the first section and the second section perpendicular to the extension direction of the blade body are all airfoil-shaped.
In one embodiment of the invention, the winglet has a cross-sectional area perpendicular to the extension of the blade body which decreases in the direction from the second section to the first section.
In one embodiment of the invention, the first section is rotatably connected to the second section.
In one embodiment of the invention, the axis of rotation of the first section relative to the second section is a first axis, and the axis of rotation of the second section relative to the vane body is a second axis;
the first axis is perpendicular to the second axis.
In an embodiment of the invention, the distal end of the second subsection is provided with a second cavity, and the wind power blade further includes a second driving unit accommodated in the second cavity, and the second driving unit is used for driving the first subsection to rotate relative to the second subsection.
A wind power generator comprises a tower and a plurality of wind power blades;
a plurality of wind blades are each rotatably connected to the tower.
The invention has the beneficial effects that:
the wind power blade comprises a blade body and a blade tip winglet; wherein the winglet is rotatably connected to the distal end of the blade body; the winglet extends in the direction of extension of the blade body, or the winglet extends in a bent manner.
From this, this wind-powered electricity generation blade can rotate for the blade body through the winglet to and make the winglet extend along the extending direction of blade body, or the winglet is buckled and is extended. Therefore, the wind power blades can be aligned to wind more accurately, wind energy is utilized to the maximum extent, the influence of tip turbulence is further weakened, the wind energy utilization coefficient Cp value is improved, and the power generation efficiency of the wind driven generator is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first view angle of a wind turbine blade provided by the present application;
FIG. 2 is a schematic structural diagram of a second perspective of a wind turbine blade provided herein;
FIG. 3 is a schematic structural diagram of a third perspective of a wind turbine blade provided herein;
FIG. 4 is a schematic illustration of a first perspective of a winglet provided herein;
FIG. 5 is a schematic illustration of a second perspective view of a winglet according to the present application.
Icon: 200-wind power blades; 210-a blade body; 220-winglet; 221-a first subsection; 222-second subsection.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 5, an embodiment of the invention provides a wind turbine, including a tower and a plurality of wind turbine blades 200; the wind turbine blade 200 includes a blade body 210 and a winglet 220; the winglet 220 may be rotatably coupled to the distal end of the blade body 210 (shown in rotational orientation a in fig. 5); the winglet 220 may extend in the direction of extension of the blade body 210, or the winglet 220 may extend in a bent configuration. And a plurality of wind blades 200 are each rotatably connected to the tower.
Referring to fig. 1 to 5, the wind turbine works according to the following principle:
the wind power blades 200 of the wind driven generator can rotate relative to the tower under the action of wind power so as to drive a generator set connected to the tower to work, thereby generating electricity; during the rotation of the wind turbine blade 200, the wind turbine blade 200 may be able to rotate relative to the blade body 210, and when the winglet 220 is disposed, the winglet 220 may extend along the extension direction of the blade body 210, or the winglet 220 may extend in a bent manner.
Therefore, the wind power blade 200 can be aligned to wind more accurately, wind energy is utilized to the maximum extent, the influence of tip turbulence is further weakened, the wind energy utilization coefficient Cp value is improved, and the power generation efficiency of the wind driven generator is further improved.
It should be noted that, in the present embodiment, an end of the blade body 210 close to the tower is a proximal end of the blade body 210, and an end of the blade body 210 away from the tower is a distal end.
Further, referring to fig. 1 to 5, in the present embodiment, in order to achieve more precise wind alignment of the wind turbine blade 200, when the winglet 220 is rotatably connected to the blade, a rotation plane of the winglet 220, which rotates relative to the blade body 210, may be perpendicular to an extension direction of the blade body 210 along the extension direction of the blade body 210. That is, when the winglet 220 rotates relative to the blade body 210, the winglet 220 rotates in a manner of twisting relative to the blade body 210, and thus the wind angle of the winglet 220 can be changed by such a rotation manner, so that wind energy can be utilized to the maximum extent, the influence of tip turbulence can be further reduced, the wind energy utilization coefficient Cp value can be improved, and the power generation efficiency of the wind turbine generator can be further improved.
In the working process of the wind driven generator, the included angle between the winglet 220 and the blade body 210 needs to be adjusted in real time along with the change of a wind field, the change of seasons and the change of wind power, so that the distal end of the blade body 210 is provided with a first cavity, the wind driven generator 200 further comprises a first driving unit accommodated in the first cavity, and the first driving unit is used for driving the winglet 220 to rotate relative to the blade body 210, through the arrangement mode, the purpose is to realize the real-time adjustment of the included angle between the winglet 220 and the blade body 210 through an intelligent control mode, so that the included angle between the winglet 220 and the blade body 210 can be adjusted in real time under different wind fields, different seasons and different wind power conditions, thereby wind energy can be utilized to the maximum extent, the influence of turbulence of the blade tip is further weakened, and the wind energy utilization coefficient Cp is improved, the power generation efficiency of the wind driven generator is further improved.
Referring to fig. 1-5, in the present embodiment, when the winglet 220 is disposed, the winglet 220 includes a first section 221 and a second section 222, and the first section 221 is connected to the second section 222; the end of the second section 222 facing away from the first section 221 is rotatably connected to the distal end of the blade body 210 (as shown in the rotating direction B in fig. 5); the first sub portion 221 and the second sub portion 222 both extend along the extending direction of the blade body 210, or the first sub portion 221 and the second sub portion 222 are connected at an included angle.
Moreover, in order to achieve more accurate wind alignment of the wind turbine blade 200, the first section 221 and the second section 222 may be rotatably connected. Through the arrangement mode, the wind angle of the winglet 220 can be changed by adjusting the included angle between the first part 221 and the second part 222 in the process that the wind power blade 200 generates electricity facing the wind, so that wind energy can be utilized to the maximum extent, the influence of tip turbulence is further weakened, the wind energy utilization coefficient Cp value is improved, and the generating efficiency of the wind driven generator is further improved.
When the first section 221 is rotatably connected to the second section 222, the axis of rotation of the first section 221 relative to the second section 222 is a first axis, and the axis of rotation of the second section 222 relative to the blade body 210 is a second axis; the first axis is perpendicular to the second axis.
When the first section 221 rotates relative to the second section 222, the rotation direction may be from the pressure surface to the pressure surface, or from the pressure surface to the suction surface. The specific rotating direction can be adjusted according to the working state. Therefore, the arrangement mode can reduce the turbulence loss of the tip of the wind power blade 200, control the formation of the vortex, increase the wind sweeping area and increase and improve the wind catching capacity of the wind power blade 200.
The same principle as the first driving unit is set up in the above, the distal end of the second sub-portion 222 has a second cavity, and the wind turbine blade 200 further includes a second driving unit accommodated in the second cavity, and the second driving unit is used for driving the first sub-portion 221 to rotate relative to the second sub-portion 222. Through the arrangement mode, the purpose is to realize real-time adjustment of the included angle between the rotation of the first sub-part 221 and the second sub-part 222 in an intelligent control mode, so that the included angle between the rotation of the first sub-part 221 and the rotation of the second sub-part 222 can be adjusted in real time under different wind fields, different seasons and different wind conditions, wind energy can be utilized to the maximum extent, the influence of tip turbulence is further weakened, the wind energy utilization coefficient Cp value is improved, and the power generation efficiency of the wind driven generator is further improved.
It should be noted that, referring to fig. 1 to fig. 5, in the present embodiment, when the first driving unit and the second driving unit are disposed, structural manners of a rotating shaft, a gear and a motor may be adopted, the rotating shaft is rotatably connected to the second sub-portion 222 and the blade body 210, and is rotatably connected to the first sub-portion 221 and the second sub-portion 222, and is connected to an output shaft of the motor and the rotating shaft through a gear transmission, so that the motor can drive the first sub-portion 221 to rotate relative to the second sub-portion 222, and drive the second sub-portion 222 to rotate relative to the blade body 210, and by the arrangement of the motor, real-time adjustment of an included angle between the winglet 220 and the blade body 210 and real-time adjustment of an included angle between the first sub-portion 221 and the second sub-portion 222 are conveniently achieved in an intelligent control manner.
Further, in order to improve the wind capturing capability of the wind turbine blade 200 when the wind turbine blade 200 is installed, the blade body 210, the first sub-unit 221, and the second sub-unit 222 have a wing-shaped cross section perpendicular to the extending direction of the blade body 210. In addition, the cross-sectional area of the winglet 220 perpendicular to the extension direction of the blade body 210 gradually decreases from the second section 222 to the first section 221.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A wind-powered electricity generation blade which characterized in that:
the wind power blade comprises a blade body and a winglet;
the winglet being rotatably connected to the distal end of the blade body;
the winglet extends in the direction of extension of the blade body, or the winglet extends in a bent manner.
2. The wind blade of claim 1, wherein:
along the extending direction of the blade body, the rotation plane of the winglet rotating relative to the blade body is perpendicular to the extending direction of the blade body.
3. The wind blade of claim 1, wherein:
the far end of the blade body is provided with a first cavity, the wind power blade further comprises a first driving unit accommodated in the first cavity, and the first driving unit is used for driving the winglet to rotate relative to the blade body.
4. The wind blade according to any of claims 1-3, wherein:
the winglet comprising a first section and a second section, the first section being connected to the second section; the end of the second section facing away from the first section is rotatably connected to the distal end of the blade body;
the first subsection and the second subsection extend along the extending direction of the blade body, or the first subsection is connected with the second subsection at an included angle.
5. The wind blade of claim 4, wherein:
the blade body, the first subsection and the second subsection are all in an airfoil shape in cross section perpendicular to the extending direction of the blade body.
6. The wind blade of claim 4, wherein:
in a direction from the second section to the first section, a cross-sectional area of the winglet decreases in a direction perpendicular to an extension direction of the blade body.
7. The wind blade of claim 4, wherein:
the first section is rotatably connected to the second section.
8. The wind blade of claim 7, wherein:
the axis of the first sub part rotating relative to the second sub part is a first axis, and the axis of the second sub part rotating relative to the blade body is a second axis;
the first axis is perpendicular to the second axis.
9. The wind blade of claim 8, wherein:
the far end of the second subsection is provided with a second cavity, the wind power blade further comprises a second driving unit accommodated in the second cavity, and the second driving unit is used for driving the first subsection to rotate relative to the second subsection.
10. A wind power generator characterized by:
the wind power generator comprising a tower and a plurality of wind power blades as claimed in any one of claims 1 to 9;
the plurality of wind power blades are rotatably connected to the tower.
CN202210547470.4A 2022-05-18 2022-05-18 Wind power blade and wind driven generator Pending CN114909253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210547470.4A CN114909253A (en) 2022-05-18 2022-05-18 Wind power blade and wind driven generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210547470.4A CN114909253A (en) 2022-05-18 2022-05-18 Wind power blade and wind driven generator

Publications (1)

Publication Number Publication Date
CN114909253A true CN114909253A (en) 2022-08-16

Family

ID=82768517

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210547470.4A Pending CN114909253A (en) 2022-05-18 2022-05-18 Wind power blade and wind driven generator

Country Status (1)

Country Link
CN (1) CN114909253A (en)

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