CN205559165U - Prismatic blade vertical axis aerogenerator of spring adjustment pitch - Google Patents
Prismatic blade vertical axis aerogenerator of spring adjustment pitch Download PDFInfo
- Publication number
- CN205559165U CN205559165U CN201620137427.0U CN201620137427U CN205559165U CN 205559165 U CN205559165 U CN 205559165U CN 201620137427 U CN201620137427 U CN 201620137427U CN 205559165 U CN205559165 U CN 205559165U
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- blade
- spring
- centrifugal mass
- slide block
- wind
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model provides a prismatic blade vertical axis aerogenerator of spring adjustment pitch, including passive pitch control device, passive pitch control device is including perpendicular main shaft, blade, bracing piece, slide, centrifugal mass slider, the spring that sets up. Wherein, blade and main shaft parallel arrangement, bracing piece respectively with blade, main shaft rigid connection. The one end setting of being close to the blade on the bracing piece the slide, the centrifugal mass slider can freely slide on the slide, blade and centrifugal mass slider be through two spring coupling, one of them spring with the one end of centrifugal mass slider is connected, another spring with the other end of centrifugal mass slider is connected. Along with the increase of rotational speed, the slip of centrifugal mass slider on the slide has increased the rigidity of spring for the spring provides bigger counter -force support in other words to the propeller pitch angle of restraint blade changes. The utility model discloses propeller pitch angle that can the control fan blade changes, guarantees blade not stall under arbitrary action of the wind, and then reaches the effect that improvement wind energy utilization is rateed.
Description
Technical field
This utility model belongs to wind power generation field, particularly relates to the prismatic blade of a kind of spring regulation pitch
Vertical axis aerogenerator.
Background technology
Vertical shaft fan is the one of one of the most promising novel renewable energy wind energy
Kind of harvester, but because its wind collecting rate is low, fails occuping market main flow so far.In recent years, little
Type vertical shaft fan development potentiality under the complexity wind environment of cities and towns makes it again become study hotspot.
Blower fan is different according to its rotating shaft, can be divided into trunnion axis blower fan and vertical shaft fan two kinds, trunnion axis
Rotating shaft of wind generator is short, and wind power conversion efficiency is high, and using value is high, and continuous along with study it
Deeply, the most gradually form the theoretical system of complete set, but blower fan technology is fast-developing
Meanwhile, some problems expose the most therewith, such as structure complexity, installation and maintenance difficulty, noise pollution etc..
And continuous intensification vertical shaft fan recognized along with people, by induction and conclusion, find vertical shaft wind
Machine has following advantage relative to trunnion axis blower fan: (1) fan shaft is perpendicular to flow wind direction, therefore
Blade can comprehensive acceptance from the wind of all directions, do not affected by flowing wind direction, eliminate and meet
Wind adjusting means, greatly reducing processing and installation cost, improves economic benefit；(2) generating
Machine and gearbox can be arranged on bottom, it is ensured that decrease installation cost while result stability；
(3) structure is relatively easy, and cost of manufacture is low；(4) noise is little, can be used for densely inhabited district.
Small-sized vertical shaft fan there is also bigger problem, mainly has wind collecting rate low, needs certainly
Startability, under low tip speed ratio, angle of attack variation amplitude is big, and stall event easily occurs, so improving
Its wind energy utilization, improve the aeroperformance of fan blade and be always the emphasis of Chinese scholars research.
Propeller pitch angle curve approximation after genetic algorithm optimization is a sine curve, the rotation process one of blade
Individual continually varying process.Flow under wind speed effect a certain fixing, along with the increase of tip speed ratio,
The amplitude of propeller pitch angle curve is gradually reduced, but the power that formed at blade surface of wind load and moment of torsion are
It is gradually increased, it is therefore desirable to fan blade occurs less angle to change under high rotating speed effect.
Existing result of study is shown, for solving this problem Chinese scholars to have researcher propose to lead to
Cross the size of supporting member regulation propeller pitch angle, it is achieved the passive control of propeller pitch angle, but oar is initially installed
Result is produced a very large impact by elongation and eccentric throw defection.There is the cam-type feather knot that researcher proposes
Though structure is ingenious, accurate to the control of propeller pitch angle, but shortcoming is exactly a set of cam can only produce a certain change oar
Rule, and this structure limits and flows the direction that wind direction can only determine that.Researcher is also had to carry in recent years
Go out to use centrifugal force and wind-force directly to regulate the change of blade rotational angle, main by pressing close to blade position
Install baffle plate and slide block, centrifugal action promote baffle plate so that relatively strong winds speed effect lower blade turns
Dynamic space reduces, it is achieved the process that high tip speed ratio lower blade rotates by a small margin.
Utility model content
In order to solve problem in prior art, this utility model provides the straight of a kind of spring regulation pitch
Blade vertical shaft wind-driven generator, controls the size of the blade pitch angle of wind-driven generator by spring,
Realize blade rotation under the conditions of optimum propeller pitch angle, it is ensured that blade does not loses under arbitrary wind-force effect
Speed, and then reach to improve wind energy utilization.
This utility model is achieved through the following technical solutions:
The prismatic blade vertical axis aerogenerator of a kind of spring regulation pitch, fills including passive pitch control
Put, described passive pitch control device include vertically disposed main shaft, blade, support bar, slideway,
Centrifugal mass slide block, spring；Wherein, described blade and main axis parallel are arranged, support bar respectively with leaf
Sheet, main shaft are rigidly connected；On support bar, the one end near blade arranges described slideway, and centrifugal mass is sliding
Block can on slideway slidably, and blade is connected by two springs with centrifugal mass slide block, Qi Zhongyi
Root spring is connected with one end of described centrifugal mass slide block, another root spring and described centrifugal mass slide block
The other end connect；Along with the increase of rotating speed, the slip on slideway of the centrifugal mass slide block is that spring carries
Support for counter-force, be equivalent to increase the rigidity of spring, to retrain the propeller pitch angle change of blade.
As further improvement of the utility model, support bar forms rotating shaft with vane hinge, and blade leads to
Cross and regulate propeller pitch angle around described axis of rotation.
As further improvement of the utility model, outside slideway, centrifugal mass slide block and spring member
Parcel dustproof protecting cover.
Accompanying drawing explanation
Fig. 1 is the front view of passive pitch control device of the present utility model；
Fig. 2 is the top view of passive pitch control device of the present utility model；
Fig. 3 is this utility model device view of (spring is uncompressed) when blower fan does not turns；
Fig. 4 is this utility model device view when blower fan rotates (during spring-compressed).
Detailed description of the invention
This utility model is further illustrated by explanation and detailed description of the invention below in conjunction with the accompanying drawings.
This utility model fully applies linear principles and the centrifugal action principle of spring, by centrifugal
The residual deformation amount of force compresses spring, it is ensured that spring is (simple below to wind-driven generator under bigger rotating speed
Claiming " blower fan ") blade has bigger effect of contraction, controls the size of blade rotational angle, it is to avoid
The generation of fan blade stall effect, being effectively improved adopting of blower fan can efficiency.
Accompanying drawing 1 is facing of the passive pitch control device of prismatic blade vertical shaft fan of the present utility model
Figure, accompanying drawing 2 is the vertical view of the passive pitch control device of prismatic blade vertical shaft fan of the present utility model
Figure, passive pitch control device of the present utility model include vertically disposed main shaft (1), blade (2),
Support bar (3), slideway (4), centrifugal mass slide block (5), spring (6)；Blade (2) and main shaft
(1) be arrangeding in parallel, support bar (3) is rigidly connected with blade, main shaft respectively；On support bar (3)
Arranging described slideway (4) near one end of blade (2), centrifugal mass slide block (5) can be in slideway (4)
On slidably, blade (2) and centrifugal mass slide block (5) are connected by two springs (6), its
In a spring (6) be connected with one end of centrifugal mass slide block (5), another root spring (6) with from
The other end of heart quality slide block (5) connects.Along with the increase of rotating speed, centrifugal mass slide block (5) exists
Slip on slideway (4) can be that spring provides bigger counter-force to support, the propeller pitch angle change of constraint blade.
Support bar (3) is hinged with blade (2), forms rotating shaft (7), and blade (2) is by around the shaft
(7) regulation propeller pitch angle is rotated.If desired, can be in slideway (4), centrifugal mass slide block (5) and two
The component outer wrapping dustproof protecting covers such as flat spring (6).
Small-sized fan blade rotates under wind-force effect, but due to the effect of contraction of spring, blower fan
The rotation of blade is restricted.As shown in Figure 3, when blower fan does not turns, spring is uncompressed.Such as accompanying drawing
Shown in 4, in blade (2) rotary course, centrifugal mass slide block under centrifugal action near blade
Slide in position, and then compression spring.Rotating speed is the fastest, and centrifugal force is the biggest, and centrifugal mass slide block is to spring
Compression the biggest, hence in so that spring is the strongest to the effect of contraction of blade, be equivalent to increase
The rigidity of spring.Spring rate is the biggest, and the rotational angle of blade is the least.
This device by passive mode (without external force intervention during operation) realize fan blade pitch according to
Predetermined optimum propeller pitch angle function β (θ, λ) rotates, and adopts the energy efficiency blower fan higher than fixed pitch.Wherein,
The tip speed ratio λ ratio of wind speed (the wind wheel blade tip linear velocity with) is used to state wind turbine characteristic
One highly important parameter, blade is the longest, or blade rotational speed is the fastest, with the blade tip speed under wind speed
Ratio is the biggest.The curve shape of optimum pitch angle beta (θ) is close with SIN function Asin (θ), amplitude A with
The increase λ is gradually lowered.The determination of optimum propeller pitch angle is theoretical based on manifold tube foline or calculates fluid
Dynamic (dynamical) simulation is combined with Multipurpose Optimal Method, obtains different orientations by a large amount of tentative calculation iteration
Optimum pitch angle beta (θ, λ) under θ, different λ.
The aerodynamic moment M of bladeAero(θ) the moment of torsion M (θ) produced blade with this device spring is at optimum
Pitch angle beta (θ) position is equal in magnitude, in opposite direction, makes blade pitch angle be maintained at β (θ), is in
Maximum lift angle of attack position and not stall, i.e. produce maximum tangential tractive force, and wind collecting efficiency is maximum
Change.Aerodynamic force suffered by blade includes tangential force, radial force and pneumatic torsion after rotating shaft (7) place decomposes
Square MAero(θ), wherein tangential force makes blower fan rotate in order to produce electric energy；Radial force, blade centrifugal force and
Strut tension balanced.
Along with wind speed increases, rotation speed of fan improves, and tip speed ratio also gradually steps up, the pneumatic torsion of blade
Square MAero(θ) the biggest, and amplitude A of optimum pitch angle beta (θ) is gradually lowered along with the increase of λ, utilizes
The centrifugal force compression spring (6) of centrifugal mass slide block (5) so that it is residual deformation amount is along with the increasing of rotating speed
Add the least, and the residual deformation amount of spring is the propeller pitch angle change amplitude of blade.Bullet in this device
The quality of the length of spring (6), rigidity and centrifugal mass slide block (5) is both needed to for concrete blower fan special
Levy parameter and can be only achieved predetermined effect through multi-objective optimization design of power.
Above content be combine that this utility model made by concrete preferred implementation the most in detail
Explanation, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.New for this practicality
For type person of an ordinary skill in the technical field, without departing from the concept of the premise utility,
Some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. a prismatic blade vertical axis aerogenerator for spring regulation pitch, including passive pitch control device, it is characterised in that: described passive pitch control device includes vertically disposed main shaft, blade, support bar, slideway, centrifugal mass slide block, spring；Wherein, described blade is arranged with main axis parallel, and support bar is rigidly connected with blade, main shaft respectively；On support bar, the one end near blade arranges described slideway, centrifugal mass slide block can on slideway slidably, blade is connected by two springs with centrifugal mass slide block, wherein a spring is connected with one end of described centrifugal mass slide block, and another root spring is connected with the other end of described centrifugal mass slide block；Along with the increase of rotating speed, centrifugal mass slide block sliding on slideway provides bigger counter-force to support for spring, the propeller pitch angle change of constraint blade.
Wind-driven generator the most according to claim 1, it is characterised in that: described support bar forms rotating shaft with vane hinge, and blade is by regulating propeller pitch angle around described axis of rotation.
Wind-driven generator the most according to claim 1, it is characterised in that: at slideway, centrifugal mass slide block and spring member outer wrapping dustproof protecting cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137427.0U CN205559165U (en) | 2016-02-23 | 2016-02-23 | Prismatic blade vertical axis aerogenerator of spring adjustment pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137427.0U CN205559165U (en) | 2016-02-23 | 2016-02-23 | Prismatic blade vertical axis aerogenerator of spring adjustment pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559165U true CN205559165U (en) | 2016-09-07 |
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ID=56818844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137427.0U Expired - Fee Related CN205559165U (en) | 2016-02-23 | 2016-02-23 | Prismatic blade vertical axis aerogenerator of spring adjustment pitch |
Country Status (1)
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|---|---|
| CN (1) | CN205559165U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545597A (en) * | 2016-02-23 | 2016-05-04 | 哈尔滨工业大学深圳研究生院 | Passive propeller pitch control device of straight-bladed vertical-axis wind turbine |
| CN108110724A (en) * | 2017-12-28 | 2018-06-01 | 温州新马亚电器有限公司 | A kind of cable branch box for being conducive to air exchange |
| CN109543287A (en) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | Wind turbines key dimension optimization method based on genetic algorithm |
| CN110285015A (en) * | 2019-08-05 | 2019-09-27 | 杭州德飙新能源科技有限公司 | A kind of noise reduction blade of wind-driven generator |
-
2016
- 2016-02-23 CN CN201620137427.0U patent/CN205559165U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545597A (en) * | 2016-02-23 | 2016-05-04 | 哈尔滨工业大学深圳研究生院 | Passive propeller pitch control device of straight-bladed vertical-axis wind turbine |
| CN105545597B (en) * | 2016-02-23 | 2019-03-01 | 哈尔滨工业大学深圳研究生院 | A kind of passive pitch control device of prismatic blade vertical axis aerogenerator |
| CN108110724A (en) * | 2017-12-28 | 2018-06-01 | 温州新马亚电器有限公司 | A kind of cable branch box for being conducive to air exchange |
| CN108110724B (en) * | 2017-12-28 | 2020-04-07 | 乐清市双龙电器加工厂 | Cable branch box beneficial to air exchange |
| CN109543287A (en) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | Wind turbines key dimension optimization method based on genetic algorithm |
| CN110285015A (en) * | 2019-08-05 | 2019-09-27 | 杭州德飙新能源科技有限公司 | A kind of noise reduction blade of wind-driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170223 |