CN110318943A - A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip - Google Patents
A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip Download PDFInfo
- Publication number
- CN110318943A CN110318943A CN201910474644.7A CN201910474644A CN110318943A CN 110318943 A CN110318943 A CN 110318943A CN 201910474644 A CN201910474644 A CN 201910474644A CN 110318943 A CN110318943 A CN 110318943A
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- blade tip
- blade
- tip part
- shaft
- pneumatic equipment
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
-
- 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- 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
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
-
- 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
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the 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
A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip, including blade body part and blade tip part, blade tip part is symmetrical at blade body part both ends, and three constitutes complete pneumatic equipment bladess；Blade tip part is connected by shaft with blade body part, shaft is parallel with pneumatic equipment bladess length direction, shaft lower end is fixedly connected with blade body part, and shaft upper end is connected by bearing with blade tip part, and blade tip part has revolution freedom degree relative to shaft；Torque spring is set in shaft, torque spring one end is fixedly connected with shaft, and the torque spring other end is fixedly connected with blade body part；Blade tip part length is the 1%~50% of complete pneumatic equipment bladess length；Under quiet wind and low wind speed, the angle of blade tip and main part is 1 °~45 °；Under wind energy conversion system rated wind speed, the angle of blade tip and main part is 0 °~1 °；Under big wind speed or extreme fitful wind, the angle of blade tip and main part is -30 °~0 °.
Description
Technical field
The invention belongs to technical field of wind power generation, more particularly to a kind of vertical axis H of the adaptive rotational deformation of blade tip
Type pneumatic equipment bladess.
Background technique
Wind energy belongs to renewable and clean energy resource, actively helps to alleviate the environment got worse using wind energy and the energy is asked
Topic, and small-sized vertical axis H-type wind energy conversion system is a kind of wind power utilizing device, because it is simple with structure, is not necessarily to wind apparatus, gas
The horizontal low advantage of moving noise, is widely used in distributed generation system.
But small-sized vertical axis H-type wind energy conversion system is different from large-scale horizontal-shaft wind turbine, large-scale horizontal-shaft wind turbine can lead to
It crosses motor to be started, and limits the power output of excess revolutions by pitch-controlled system, but small-sized vertical axis H-type wind energy conversion system starts
Aerodynamic force suffered by blade is fully relied on, and faces hypervelocity or superpower risk under big wind speed or extreme fitful wind.
In addition, in the lower Urban Wind Field of mean wind speed, the small-sized usual difficulty in starting of vertical axis H-type wind energy conversion system, and
Hypervelocity or overpower are difficult to effectively control and also limit small-sized vertical axis H-type wind energy conversion system and widely apply.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of vertical axis H-type wind of adaptive rotational deformation of blade tip
Power machine blade, blade tip part can carry out adaptive rotational deformation according to wind conditions, help to improve at low wind speeds
The self-starting performance of wind energy conversion system is able to maintain higher wind power utilization efficiency, in big wind speed or pole under wind energy conversion system rated wind speed
Power output can be effectively reduced under the fitful wind of end and reduces wind energy conversion system revolving speed, and then guarantees the operational safety of wind energy conversion system.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of adaptive rotational deformation of blade tip it is vertical
Axis H-type pneumatic equipment bladess, including blade body part, the first blade tip part and the second blade tip part, the first blade
Tip segment and the second blade tip partial symmetry are distributed in blade body part two sides up and down, by blade body part, first
Blade tip part and the second blade tip part collectively form complete pneumatic equipment bladess；First blade tip part is logical
It crosses shaft to be connected with blade body part, shaft is parallel with the length direction of pneumatic equipment bladess, shaft one end and blade body
Part is fixedly connected with, and the shaft other end is connected by bearing with blade tip part, and the first blade tip part has relative to shaft
Have revolution freedom degree, torque spring be set in shaft, torque spring one end is fixedly connected with shaft, the torque spring other end with
Blade body part is fixedly connected with；Connection structure between second blade tip part and blade body part is identical to first
Blade tip part.
The length of first blade tip part and the second blade tip part is equal, is complete pneumatic equipment bladess exhibition
Long 1%~50%.
The shaft is located on the chord length line of complete pneumatic equipment bladess, and length of the shaft apart from blade inlet edge is complete wind
The 1%~25% of power machine leaf chord length line length.
Under quiet wind and low wind speed, the chord length line and blade of first blade tip part and the second blade tip part
There is 1 °~45 ° of angle between the chord length line of main part.
Under wind energy conversion system rated wind speed, the chord length line and leaf of first blade tip part and the second blade tip part
There is 0 °~1 ° of angle between the chord length line of piece main part.
Under big wind speed or extreme fitful wind, the chord length line of first blade tip part and the second blade tip part with
There is -30 °~0 ° of angle between the chord length line of blade body part.
Beneficial effects of the present invention:
The vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip of the invention, blade tip part being capable of basis
Wind conditions carry out adaptive rotational deformation, the self-starting performance of wind energy conversion system are helped to improve at low wind speeds, in wind energy conversion system volume
Determine to be able to maintain higher wind power utilization efficiency under wind speed, can be effectively reduced under big wind speed or extreme fitful wind power output with
And wind energy conversion system revolving speed is reduced, and then guarantee the operational safety of wind energy conversion system.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip of the invention；
Fig. 2 is the schematic diagram of blade of the invention under quiet wind and low wind speed；
Fig. 3 is the schematic diagram of blade of the invention under wind energy conversion system rated wind speed；
Fig. 4 is the schematic diagram of blade of the invention under big wind speed or extreme fitful wind；
In figure, 1-blade body part, the 2-the first blade tip part, the 3-the second blade tip part, 4-shafts,
5-bearings, 6-torque springs.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in figures 1-4, the vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of a kind of blade tip, including blade body
Part 1, the first blade tip part 2 and the second blade tip part 3, the first blade tip part 2 and the second blade and blade tip
3 are divided to be symmetrically distributed in about 1 two sides of blade body part, by blade body part 1, the first blade tip part 2 and the second leaf
Piece tip segment 3 collectively forms complete pneumatic equipment bladess；First blade tip part 2 passes through shaft 4 and blade body
Part 1 is connected, and shaft 4 is parallel with the length direction of pneumatic equipment bladess, and 4 one end of shaft is fixedly connected with blade body part 1, turns
4 other end of axis is connected by bearing 5 with blade tip part 2, and the first blade tip part 2 has revolution certainly relative to shaft 4
By spending, torque spring 6 is set in shaft 4,6 one end of torque spring is fixedly connected with shaft 4,6 other end of torque spring and leaf
Piece main part 1 is fixedly connected with；Connection structure between second blade tip part 3 and blade body part 1 is identical to
One blade tip part 2.
The length of first blade tip part 2 and the second blade tip part 3 is equal, is complete pneumatic equipment bladess
The 1%~50% of length.
The shaft 4 is located on the chord length line of complete pneumatic equipment bladess, and length of the shaft 4 apart from blade inlet edge is complete
The 1%~25% of pneumatic equipment bladess chord length line length.
Under quiet wind and low wind speed, the chord length line and leaf of first blade tip part 2 and the second blade tip part 3
There is 1 °~45 ° of angle between the chord length line of piece main part 1.
Under wind energy conversion system rated wind speed, the chord length line of first blade tip part 2 and the second blade tip part 3 with
There is 0 °~1 ° of angle between the chord length line of blade body part 1.
Under big wind speed or extreme fitful wind, the chord length line of first blade tip part 2 and the second blade tip part 3
There is -30 °~0 ° of angle between the chord length line of blade body part 1.
The pneumatic efficiency of wind energy conversion system can be evaluated by power coefficient with the change curve of tip-speed ratio,
In, the calculation formula of power coefficient is Cp=2PM/ρAV3, the calculation formula of tip-speed ratio is λ=wR/V, in formula, PM=2 π
NM/60, CPFor power coefficient, PMFor wind wheel mechanical output, ρ is atmospheric density, and A is swept area of rotor, and V is incoming flow wind
Speed, λ are tip-speed ratio, and w is that wind wheel rotates angle speed, and R is wind wheel radius of turn, and n is wind speed round, and M is rotor shaft torque.
After small-sized vertical axis H-type wind energy conversion system is mounted with blade of the invention, under quiet wind and low wind speed, the first blade and blade
Nose part 2 and the second blade tip part 3 be not by centrifugal modelling, and torque spring 5 will not twist deformation, in this state
Under, can have between the first blade tip part 2 and the second blade tip part 3 and the chord length line of blade body part 11 °~
45 ° of angle is equivalent to and increases the established angle of the first blade tip part 2 and the second blade tip part 3, and the first blade
Tip segment 2 and the second blade tip part 3 are in positive installation horn shape state, to facilitate the self-starting of wind energy conversion system.
When wind speed reaches wind energy conversion system rated wind speed, after wind energy conversion system starting, the first blade tip part 2 and the second blade
Tip segment 3 can rotate under centrifugal modelling, and then torque spring 5 can be made to generate torsional deformation, in this case, the
It can be also contracted between one blade tip part 2 and 3 chord length line of the second blade tip part and the chord length line of blade body part 1
0 °~1 °, and when angle between the two narrows down to 0 °, then the first blade tip part 2 and the second blade tip part 3 with
Blade body part 1 forms complete pneumatic equipment bladess, to ensure that wind energy conversion system wind energy utilization efficiency with higher.
When encountering big wind speed or extreme fitful wind, after wind energy conversion system rotation is greater than rated speed, due to centrifugal modelling
Enhancing, will lead to the first blade tip part 2 and the second blade tip part 3 and continues to rotate, and then generate torque spring 5 greatly
The torsional deformation of amplitude, in this case, the chord length line and blade of the first blade tip part 2 and the second blade tip part 3
Can then it reach within the scope of -30 °~0 ° between the chord length line of main part 1, and the first blade tip part 2 and the second blade tip
Part 3 is in negative established angle state, and then can directly result in the power output and revolving speed reduction of wind energy conversion system, to ensure that wind
The operational safety of power machine.
Wind energy conversion system is from the operation phase is transformed into during startup stage, the rotational deformation process of blade tip part 2
Without artificially interfering, adaptive deformation is fully achieved.
The scope of patent protection that scheme in embodiment is not intended to limit the invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the patents of this case.
Claims (6)
1. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip, it is characterised in that: including blade body portion
Point, the first blade tip part and the second blade tip part, the first blade tip part and the second blade tip partial symmetry
Blade body part two sides up and down are distributed in, by blade body part, the first blade tip part and the second blade tip part
Collectively form complete pneumatic equipment bladess；First blade tip part is connected by shaft with blade body part, shaft
Parallel with the length direction of pneumatic equipment bladess, shaft one end is fixedly connected with blade body part, and the shaft other end passes through bearing
It is connected with blade tip part, the first blade tip part has revolution freedom degree relative to shaft, and torsion is set in shaft
Power spring, torque spring one end are fixedly connected with shaft, and the torque spring other end is fixedly connected with blade body part；Second leaf
Connection structure between piece tip segment and blade body part is identical to the first blade tip part.
2. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip according to claim 1, feature exist
In: the length of first blade tip part and the second blade tip part is equal, is complete pneumatic equipment bladess length
1%~50%.
3. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip according to claim 1, feature exist
In: the shaft is located on the chord length line of complete pneumatic equipment bladess, and length of the shaft apart from blade inlet edge is complete wind energy conversion system
The 1%~25% of leaf chord length line length.
4. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip according to claim 1, feature exist
In: under quiet wind and low wind speed, the chord length line and blade body of first blade tip part and the second blade tip part
There is 1 °~45 ° of angle between partial chord length line.
5. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip according to claim 1, feature exist
In: under wind energy conversion system rated wind speed, the chord length line of first blade tip part and the second blade tip part and blade master
There is 0 °~1 ° of angle between the chord length line of body portion.
6. a kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip according to claim 1, feature exist
In: under big wind speed or extreme fitful wind, the chord length line and blade of first blade tip part and the second blade tip part
There is -30 °~0 ° of angle between the chord length line of main part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474644.7A CN110318943A (en) | 2019-06-03 | 2019-06-03 | A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474644.7A CN110318943A (en) | 2019-06-03 | 2019-06-03 | A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip |
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| Publication Number | Publication Date |
|---|---|
| CN110318943A true CN110318943A (en) | 2019-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910474644.7A Pending CN110318943A (en) | 2019-06-03 | 2019-06-03 | A kind of vertical axis H-type pneumatic equipment bladess of the adaptive rotational deformation of blade tip |
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| Country | Link |
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| CN (1) | CN110318943A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727661A (en) * | 2019-10-14 | 2021-04-30 | 广州雅图新能源科技有限公司 | Hydroelectric generation device and power generation method thereof |
| SE2050686A1 (en) * | 2020-06-10 | 2021-12-11 | Carlson Bjoern | Vertical wind turbine |
| WO2023179237A1 (en) * | 2022-03-22 | 2023-09-28 | 蓝色粮仓海洋工程设备(深圳)有限责任公司 | Vertical-axis wind power generation fan blade and vertical-axis wind power generation device |
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| CN2802112Y (en) * | 2005-06-14 | 2006-08-02 | 韩永勤 | Wind-mill generator |
| US8322035B2 (en) * | 2006-03-29 | 2012-12-04 | Yan Qiang | Vertical axis wind turbine and method of installing blades therein |
| CN203404020U (en) * | 2013-06-21 | 2014-01-22 | 张远林 | Stable-operation vertical-axis wind driven generator blade |
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
-
2019
- 2019-06-03 CN CN201910474644.7A patent/CN110318943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2802112Y (en) * | 2005-06-14 | 2006-08-02 | 韩永勤 | Wind-mill generator |
| US8322035B2 (en) * | 2006-03-29 | 2012-12-04 | Yan Qiang | Vertical axis wind turbine and method of installing blades therein |
| CN203404020U (en) * | 2013-06-21 | 2014-01-22 | 张远林 | Stable-operation vertical-axis wind driven generator blade |
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727661A (en) * | 2019-10-14 | 2021-04-30 | 广州雅图新能源科技有限公司 | Hydroelectric generation device and power generation method thereof |
| SE2050686A1 (en) * | 2020-06-10 | 2021-12-11 | Carlson Bjoern | Vertical wind turbine |
| SE544250C2 (en) * | 2020-06-10 | 2022-03-15 | Carlson Bjoern | Vertical wind turbine |
| WO2023179237A1 (en) * | 2022-03-22 | 2023-09-28 | 蓝色粮仓海洋工程设备(深圳)有限责任公司 | Vertical-axis wind power generation fan blade and vertical-axis wind power generation device |
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| PB01 | Publication | ||
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Application publication date: 20191011 |