CN109751180A - The blade selection method of double-vane fan - Google Patents
The blade selection method of double-vane fan Download PDFInfo
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- CN109751180A CN109751180A CN201711065282.3A CN201711065282A CN109751180A CN 109751180 A CN109751180 A CN 109751180A CN 201711065282 A CN201711065282 A CN 201711065282A CN 109751180 A CN109751180 A CN 109751180A
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- stage impeller
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- 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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Abstract
The invention discloses a kind of blade selection methods of double-vane fan, the installation total capacity including determining wind power plant；Obtain the wind data at multiple predetermined position coordinates；According to the wind data at the installation total capacity and the multiple predetermined position coordinate, the blower installed capacity at above-mentioned multiple predetermined position coordinates is determined；According to the wind data at the installed capacity of each blower, the position coordinates and electric cost is spent, determines length of blade, wherein the length of blade of one stage impeller is the 2 times or more of the length of blade of the sencond stage impeller.
Description
Technical field:
The invention belongs to technical field of wind power generation, in particular to the blade selection method of a kind of double-vane fan.
Background technique:
With the rapid expansion of countries in the world Wind turbines installation scale, the single-machine capacity of mainstream Wind turbines type also exists
Constantly increase.How Wind turbines type selecting is more reasonably carried out, so that wind turbine layout is more reasonable, electricity volume is more big,
The project for becoming current researchers at home and abroad pay attention to day by day is more saved in investment.
Single impeller blower is limited to the utilization efficiency of wind energy, can only adjust indirectly by adjusting angle, the length of blade
Generating efficiency, and double-vane fan can effectively improve wind energy by selection one stage impeller and sencond stage impeller according to different wind directions
Utilization rate, with the advantage that single impeller blower is incomparable, therefore it is very necessary to design a structurally reasonable double-vane fan.
In addition, double-vane fan blade is the shutdown component of blower conversion wind energy, under identical capacity conditions, length of blade is to influence wind-powered electricity generation
The key parameter of field generated energy.Longer blade means stronger wind energy absorption efficiency, but also increase blower cost and
Wake effect.Therefore, under conditions of given wind energy turbine set installed capacity, how to select reasonable length of blade, reduce wind power plant
The electric cost of degree be also the construction of double-vane fan wind field one of main problem.
Summary of the invention:
The purpose of the present invention is to provide a kind of double-vane fan and its corresponding blade selection methods, to make bilobed wheel
The structural optimization of blower, and the degree electricity cost of the wind power plant based on double-vane fan is made to reach minimum.
The present invention is implemented by following technical solution:
A kind of blade selection method of double-vane fan, wherein the double-vane fan includes:
One stage impeller, sencond stage impeller and wheel speed merge mechanism；The wheel speed, which merges mechanism, has the first input
Axis, the second input shaft, the first output shaft and the second output shaft, the one stage impeller and first input shaft are drivingly connected, institute
It states sencond stage impeller and second input shaft to be drivingly connected, first output shaft passes through first clutch and the first generator
Input shaft is drivingly connected, and second output shaft is drivingly connected by the input shaft of second clutch and second generator；
The one stage impeller and the sencond stage impeller are coaxially connected, and the length of blade of the one stage impeller is greater than the second level
The length of blade of impeller, and direction of rotation when work is on the contrary, the one stage impeller is located at the front of the sencond stage impeller；
The wheel speed merges sun gear, gear ring and the planet carrier that mechanism includes coaxial arrangement, sets on the planet carrier
There are multiple planetary gears, the gear ring is equipped with internal tooth and external tooth, and the planetary gear is engaged on the internal tooth and the sun of the gear ring
Between wheel, first input shaft is equipped with driving gear, and the outer tooth engagement of the driving gear and the gear ring, described second is defeated
Enter axis to connect with the shaft of the sun gear, the shaft of the planet carrier is drivingly connected by jackshaft and output shaft, described defeated
One end of shaft forms first output shaft, and the other end forms second output shaft；
The blade selection method specifically includes:
Determine the installation total capacity of wind power plant；
Obtain the wind data at multiple predetermined position coordinates；
According to the wind data at the installation total capacity and the multiple predetermined position coordinate, determine above-mentioned multiple predetermined
Blower installed capacity at position coordinates；
According to the wind data at the installed capacity of each blower, the position coordinates and electric cost is spent, determines length of blade,
Wherein, the length of blade of one stage impeller is the 2 times or more of the length of blade of the sencond stage impeller.
Detailed description of the invention:
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the wind-driven generator that an embodiment provides；
Fig. 2 is the schematic diagram that wheel speed merges mechanism in an embodiment；
Fig. 3 is the flow chart of blade selection method in an embodiment.
Appended drawing reference is as follows: 1 one stage impeller, 2 sencond stage impellers, 31 first input shafts, 32 second input shafts, 41 first outputs
Axis, 42 second output shafts, 51 sun gears, 52 gear rings, 53 planet carriers, 54 planetary gears, 55 driving gears, 6 jackshafts
Specific embodiment:
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figures 1 and 2, for degree of further decreasing electricity cost, optimize the mechanism of double-vane fan, provide a kind of double
Impeller wind-driven generator, comprising: one stage impeller 1, sencond stage impeller 2 and wheel speed merge mechanism；The wheel speed merges machine
Structure has the first input shaft 31, the second input shaft 32, the first output shaft 41 and the second output shaft 42, the one stage impeller 1 and institute
The first input shaft 31 drive connection is stated, the sencond stage impeller 2 is drivingly connected with second input shaft 32, first output shaft
41 are drivingly connected by the input shaft of first clutch and the first generator, second output shaft 42 by second clutch and
The input shaft of second generator is drivingly connected.
The one stage impeller 1 and the sencond stage impeller 2 are coaxially connected, and the length of blade of the one stage impeller 1 is greater than described
The length of blade of sencond stage impeller 2, and before direction of rotation when working is on the contrary, the one stage impeller 1 is located at the sencond stage impeller 2
Side.
When work, air-flow first passes through one stage impeller 1, then by sencond stage impeller 2, the diameter of sencond stage impeller 2 is less than level-one leaf
Wheel 1, therefore, sencond stage impeller 2 works required minimum wind speed again smaller than one stage impeller 1.In order to increase stabilization when head work
Property, the rotation direction of one stage impeller 1 and sencond stage impeller 2 is on the contrary, to offset torque.
Wherein, wheel speed merges mechanism and can merge the revolving speed of one stage impeller 1 and sencond stage impeller 2, to obtain more
Big output revolving speed, driven generator work improve generating efficiency to efficiently use remaining wind energy.
The wheel speed merges sun gear 51, gear ring 52 and the planet carrier 53 that mechanism includes coaxial arrangement, the planet
Frame 53 is equipped with multiple planetary gears 54, and the gear ring 52 is equipped with internal tooth and external tooth, and the planetary gear 54 is engaged on the gear ring 52
Internal tooth and the sun gear 51 between, first input shaft 31 be equipped with driving gear 55, the driving gear 55 with it is described
The outer tooth engagement of gear ring 52, second input shaft 32 are connect with the shaft of the sun gear 51, the shaft of the planet carrier 53
It is drivingly connected by jackshaft 6 and output shaft, one end of the output shaft forms first output shaft 41, and the other end forms institute
State the second output shaft 42.
For example, the revolving speed of sun gear 51 is n1, the revolving speed of gear ring 52 is n2, and the revolving speed of planet carrier 53 is n3, in gear ring 52
The number of teeth ratio of tooth and sun gear 51 is a, n3=(n1+a*n2)/(1+a).To realize the superposition of revolving speed and torque.
In the present embodiment, the length of blade 75m of one stage impeller, the length of blade 35m of sencond stage impeller.In a generator work
In the case where work, and when only one stage impeller works, the threshold wind velocity 4m/s of blower, rated wind speed 15m/s, survival wind speed
25m/s, rated power 3MW, when only sencond stage impeller works, the threshold wind velocity 3m/s of blower, rated wind speed 10m/s, safety
Wind speed 25m/s, rated power 1.5MW.
Since in the work of low wind speed, the energy loss in the work of the first impeller is larger, and power is low, in order to send out the wind-force
Motor can adapt to large range of wind speed, efficiently use wind-resources, two threshold values involved in the control of above-mentioned wind-driven generator,
First threshold is 6m/s, second threshold 10m/s.
Specific control method is as follows: wind speed is obtained, when wind speed is less than first threshold, to one stage impeller 1 and sencond stage impeller 2
Blade carry out variable pitch, so that one stage impeller 1 is stopped generating state, sencond stage impeller 2 is in rotary electrification state, at first clutch
In meshing state, second clutch is gone out discrete state.To generate electricity in low wind speeds starting blower, and reduce blower hair
In-fighting in electric process improves generating efficiency.
When wind speed is not less than first threshold and is not more than second threshold, to the blade of one stage impeller 1 and sencond stage impeller 2 into
Row variable pitch makes one stage impeller 1 and sencond stage impeller 2 be in rotary electrification state, and first clutch is in meshing state, second from
Clutch is in discrete state.To carry out high power generation by the first impeller, and remaining wind is efficiently used by the second impeller
Energy.In this mode, the maximum power of blower can reach 4MW.
When wind speed is greater than second threshold, one stage impeller 1 and sencond stage impeller 2 are in rotary electrification state, the first clutch
Device and second clutch are in meshing state.Needed for wind speed is larger than separate unit generator when rated wind speed 10m/s, utilize
Two generators generate electricity simultaneously, and can reach maximum power generation is 8MW, can efficiently use wind energy, improve generated output, and not
The diameter that will increase impeller avoids blade too long, increases manufacture, transport and installation maintenance cost.
Due to being relatively large in diameter for one stage impeller 1, one stage impeller 1 can not be driven to rotate when wind-force is less than first threshold, because
This adjusts the blade of one stage impeller 1, reduces front face area, makes air-flow by one stage impeller 1, directly drives the rotation of sencond stage impeller 2,
And in order to reduce threshold wind velocity, second clutch is in discrete state, and only the first generator works.
When wind-force increases to first threshold and second threshold, the first impeller is also started turning, and is had by the second impeller
It imitates and utilizes remaining wind energy, the revolving speed of the first impeller and the second impeller drives the first generator after wheel speed merges mechanism superposition
Work.
After wind-force continues to be increased above second threshold, since the revolving speed of impeller cannot be promoted infinitely, but driving force is mentioned
Height engages second clutch, while driving the first generator and the second electrical power generators, improves generating efficiency.
The wind-driven generator provided in this embodiment blower of tradition Dan Yelun relatively has bigger fan efficiency, to mention
The generated energy of high wind field, reduction degree electricity cost.
Another embodiment provides a kind of blade selection method S100 of above-mentioned double-vane fan, referring to Fig. 3.The method
S100 includes:
Step S101: the installation total capacity of wind power plant is determined；
Step S102: the wind data at multiple predetermined position coordinates, including wind speed, direction, duration for wind power are obtained
Deng.
Step S103: according to the wind data at the installation total capacity and the multiple predetermined position coordinate, in determination
The blower installed capacity at multiple predetermined position coordinates is stated, specific determination process engineering staff can pass through technical field
Technical experience, according to specific wind data and total installation of generating capacity, the installed capacity of each separate unit blower of reasonable layout, above-mentioned technology
Experience belongs to any technique commonly known common sense, and details are not described herein.
Step S104: according to the wind data and expecting degree electricity cost at the installed capacity of each blower, the position coordinates,
Determine length of blade, specific method of determination this field has existed ripe algorithm, and details are not described herein.But it is a large amount of by inventor
Experiment shows to be the 2 times or more of the length of blade of the sencond stage impeller when the length of blade of one stage impeller, at this point it is possible to make
The blade wake effect of double-vane fan in one embodiment is minimum, and generating efficiency highest should belong to optimal embodiment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of blade selection method of double-vane fan, it is characterised in that:
The double-vane fan includes:
One stage impeller, sencond stage impeller and wheel speed merge mechanism；The wheel speed, which merges mechanism, has the first input shaft, the
Two input shafts, the first output shaft and the second output shaft, the one stage impeller and first input shaft are drivingly connected, the second level
Impeller and second input shaft are drivingly connected, and first output shaft passes through the input shaft of first clutch and the first generator
It is drivingly connected, second output shaft is drivingly connected by the input shaft of second clutch and second generator；
The one stage impeller and the sencond stage impeller are coaxially connected, and the length of blade of the one stage impeller is greater than the sencond stage impeller
Length of blade, and work when direction of rotation on the contrary, the one stage impeller is located at the front of the sencond stage impeller；
The wheel speed merges sun gear, gear ring and the planet carrier that mechanism includes coaxial arrangement, and the planet carrier is equipped with more
A planetary gear, the gear ring be equipped with internal tooth and external tooth, the planetary gear be engaged on the gear ring internal tooth and the sun gear it
Between, first input shaft is equipped with driving gear, the outer tooth engagement of the driving gear and the gear ring, second input shaft
It is connect with the shaft of the sun gear, the shaft of the planet carrier is drivingly connected by jackshaft and output shaft, the output shaft
One end form first output shaft, the other end forms second output shaft；
The blade selection method specifically includes:
Determine the installation total capacity of wind power plant；
Obtain the wind data at multiple predetermined position coordinates；
According to the wind data at the installation total capacity and the multiple predetermined position coordinate, above-mentioned multiple predetermined positions are determined
Blower installed capacity at coordinate；
According to the wind data at the installed capacity of each blower, the position coordinates and electric cost is spent, determines length of blade,
In, the length of blade of one stage impeller is the 2 times or more of the length of blade of the sencond stage impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065282.3A CN109751180B (en) | 2017-11-02 | 2017-11-02 | Blade type selection method of double-impeller fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065282.3A CN109751180B (en) | 2017-11-02 | 2017-11-02 | Blade type selection method of double-impeller fan |
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| Publication Number | Publication Date |
|---|---|
| CN109751180A true CN109751180A (en) | 2019-05-14 |
| CN109751180B CN109751180B (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711065282.3A Active CN109751180B (en) | 2017-11-02 | 2017-11-02 | Blade type selection method of double-impeller fan |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072094A (en) * | 2010-12-02 | 2011-05-25 | 岑益南 | Wind driven generator with double wind wheels with power synthesis |
| US20110305570A1 (en) * | 2010-06-11 | 2011-12-15 | Chan Shin | Aerodynamic dead zone-less triple rotors integrated wind power driven system |
| CN203114522U (en) * | 2013-03-17 | 2013-08-07 | 南京风电科技有限公司 | Efficient and reliable wind power generation device |
| CN106503341A (en) * | 2016-10-31 | 2017-03-15 | 上海电力学院 | A kind of wind electric field blower blade Lectotype Optimization method |
-
2017
- 2017-11-02 CN CN201711065282.3A patent/CN109751180B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110305570A1 (en) * | 2010-06-11 | 2011-12-15 | Chan Shin | Aerodynamic dead zone-less triple rotors integrated wind power driven system |
| CN102072094A (en) * | 2010-12-02 | 2011-05-25 | 岑益南 | Wind driven generator with double wind wheels with power synthesis |
| CN203114522U (en) * | 2013-03-17 | 2013-08-07 | 南京风电科技有限公司 | Efficient and reliable wind power generation device |
| CN106503341A (en) * | 2016-10-31 | 2017-03-15 | 上海电力学院 | A kind of wind electric field blower blade Lectotype Optimization method |
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| CN109751180B (en) | 2020-07-14 |
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Effective date of registration: 20201126 Address after: 100052, 8 floor, No. 1 Caishikou Avenue, Beijing, Xicheng District, 801-03 Patentee after: BEIJING TANGHAO POWER ENGINEERING TECHNOLOGY RESEARCH Co.,Ltd. Address before: 102199 No. 1363 Kangxi Road, Badaling Economic Development Zone, Yanqing District, Beijing Patentee before: BEIJING PUHUA YINENG WIND POWER TECHNOLOGY Co.,Ltd. |