CN108843487A - A kind of variable pitch impeller with the wind - Google Patents
A kind of variable pitch impeller with the wind Download PDFInfo
- Publication number
- CN108843487A CN108843487A CN201811048875.3A CN201811048875A CN108843487A CN 108843487 A CN108843487 A CN 108843487A CN 201811048875 A CN201811048875 A CN 201811048875A CN 108843487 A CN108843487 A CN 108843487A
- Authority
- CN
- China
- Prior art keywords
- turntable
- blade
- wind
- impeller
- axis hole
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The present invention relates to a kind of wind power generator impeller, blade can freely convert propeller pitch angle with wind speed size.It is characterized in that blade pitch device is arranged on turntable, and bearing is housed at the both ends of axis hole.This impeller can be designed as three fan blades, four fan blades, five fan blades, eight blades or more.Great advantage of the present invention is low wind starting, torque is big, revolving speed is fast, structurally reasonable, simple process.Wind tunnel test statistics indicate that, improved efficiency more than one times using the wind-driven generator of this impeller than the prior art.It is especially suitable for low wind speed power generation.
Description
The present invention relates to a kind of wind power generator impellers.Especially a kind of blower that propeller pitch angle is freely converted with wind speed size
Impeller.
The impeller blade of prior art blower has fixed-wing and two kinds of the on-fixed wing.Fixed wing blade is only done at work
The propeller pitch angle of circular motion, blade is constant always.It is unfavorable for starting when the low wind of the blade of such mode, the resistance of blade when strong wind
It increases with it and is unfavorable for improving revolving speed.Another on-fixed wing blade propeller pitch angle is variable, and such fan blade is only when encountering high wind
The propeller pitch angle of disposable transformation fan blade prevents hypervelocity damage generating set the purpose is to reduce rotation speed of fan.
The impeller that propeller pitch angle obtains Optimal ratio of lift over drag is adjusted in due course with wind-force size the purpose of the present invention is to provide a kind of
Blade.And automatic retarding brake prevents damage generating set when can encounter high wind.
The invention is realized in this way impeller of the invention can be designed as three blades, quaterfoil, five blades, eight blades
Or more blade.This impeller is made of turntable, blade, spoke bar, brake disc, electromagnetic brake piece etc..It is characterized in that blade pitch device
It is arranged on turntable.The blade and spoke bar of fan blade are affixed, and in the axis hole on the lower end insertion turntable of spoke bar, the both ends of axis hole are filled
There is bearing, limiting slot is arranged in the middle part of axis hole, and the lower end of spoke bar and limiting slot corresponding position are equipped with spacer pin；In generator and turn
Brake disc is set between disk, and electromagnetic brake piece is mounted on generator.Turntable, brake disc couple with generator shaft.
The invention is realized in this way blade drives turntable, brake disc, motor shaft through spoke bar under the action of the wind in work
It moves in a circle.Fan blade with wind-force size conversion propeller pitch angle, spacer pin on spoke bar by turntable upper limit position groove constraint only
It can be in 0-50 ° of range conversion angle.Velocity sensor issues signal when encountering high wind, and electromagnetic brake piece obtains electric suction in brake block
On, make impeller deceleration or parking.Remote controler or manual switch control electromagnetic brake piece can also be used.
The present invention changes the design philosophy of fixed wing blade, using variable pitch technology with the wind, to the impeller leaf of the prior art
Chip architecture improves.Spoke bar is added on fan blade, and blade-section extension is increased work done torque.Blower is obtaining larger turn
The revolving speed of blower is also improved while square, and pitch control mechanism is arranged on turntable.Great advantage of the present invention is low wind
Starting, torque is big, revolving speed is fast, structurally reasonable, simple process.Wind tunnel test statistics indicate that, using the wind-driven generator of this impeller
It is improved efficiency more than one times than the prior art.
Advantages of the present invention and implementation result are in particular in the following aspects：
1, low wind speed opens function, this impeller threshold wind velocity 2m/S, prior art threshold wind velocity 4m/S；The revolving speed as wind speed 8m/s
It is 2.1 times of the prior art, power is 2.2 times of the prior art.2, under identical power conditions, the impeller blade size of blower can
Shorten 1/2--1/3.It saved cost, facilitated transport and installation.
3, bearing is installed in blade pitch device setting additional on turntable and in axis hole.So that it is compact-sized, simple process variable pitch is non-
Often flexibly.It improves the safety of equipment simultaneously, reliability, extend service life.
4, being equipped with braking system prevents blower overspeed operation from damaging generating set.
5, the low wind speed resource for accounting for national wind energy 85% is fully used.
Detailed description of the invention：
Fig. 1 is the general illustration of three blade impellers.
Fig. 2 is blade construction schematic diagram
Fig. 3 is axis hole limiting slot schematic diagram
Fig. 4 is axis hole limiting slot and spacer pin sectional view
Fig. 5 is quaterfoil impeller schematic diagram
Fig. 6 is five blade impeller schematic diagrames
Fig. 7 is eight blade impeller schematic diagrames
Fig. 8 is braking system scheme of installation
Specific embodiment：Implementation of the invention is further illustrated below in conjunction with view.
As shown in Figure 8：The present invention by blade 1, spoke bar 2, turntable 4, brake disc 9, electromagnetic brake piece 10, generating set 11,
Empennage 12 forms.Turntable 4, is sequentially arranged on motor shaft 8 brake disc 9, and electromagnetic brake piece 10 is mounted on 11 front of generator.
Shown in Fig. 1：For three blade impellers.Blade 1 and spoke bar 2 are affixed.In the axis hole 3 of the lower end insertion turntable 4 of spoke bar 2.
Shown in Fig. 2, Fig. 3, Fig. 4：The both ends of axis hole 3 are equipped with bearing 5, and limiting slot 7,2 lower end of spoke bar is arranged in the middle part of axis hole 3
Spacer pin 6 is housed with 7 corresponding position of limiting slot, spacer pin 6 is fastened in the screw hole of spoke bar 2 after spoke bar 2 is inserted into axis hole 3.
Fig. 5 show quaterfoil impeller.Blade construction is identical as three blades.
Fig. 6 show five blade impellers.Blade construction is identical as three blades
Fig. 7 show eight blade impellers.Blade construction is identical as three blades
Innovative point of the invention is that blade pitch device is arranged on turntable.All blade pitch devices that is arranged on turntable are whether adopted
It is all fallen within the scope and spirit of the invention with sliding bearing or thrust bearing.
Claims (3)
1. a kind of adjust the impeller that propeller pitch angle obtains Optimal ratio of lift over drag with wind-force size, by blade (1), spoke bar (2) turntable in due course
(4), brake disc (9), electromagnetic brake piece (10) composition.It is characterized in that：Blade pitch device be arranged on turntable (4), blade (1) and
Spoke bar (2) is affixed, and in the axis hole (3) in lower end insertion turntable (4) of spoke bar (2), the both ends of axis hole (3) are respectively arranged with bearing (5),
Limiting slot (7) are arranged in the middle part of axis hole (3), and the lower end of spoke bar (2) and limiting slot (7) corresponding position are equipped with spacer pin (6)；It is sending out
Brake disc (9) are set between motor (11) and turntable (4), electromagnetic brake piece (10) is mounted on generator (11), turntable (4),
Brake disc (9) couples with generator shaft (8).
2. turntable (4) according to claim 1, turntable (4) has Triaxial hole, four axis holes, five axis holes, eight axis holes, each
The both ends of axis hole are equipped with bearing (5), there is a limiting slot (7) in the middle part of axis hole (3).
3. brake disc (9) according to claim 1 is mounted on motor shaft (8), and is located at turntable (4) and generator (11)
Between, electromagnetic brake piece (10) is mounted on generator (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048875.3A CN108843487A (en) | 2018-08-31 | 2018-08-31 | A kind of variable pitch impeller with the wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048875.3A CN108843487A (en) | 2018-08-31 | 2018-08-31 | A kind of variable pitch impeller with the wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843487A true CN108843487A (en) | 2018-11-20 |
Family
ID=64189470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811048875.3A Pending CN108843487A (en) | 2018-08-31 | 2018-08-31 | A kind of variable pitch impeller with the wind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843487A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630433A (en) * | 2019-10-15 | 2019-12-31 | 王毅 | Multi-blade wind-following variable-pitch impeller |
-
2018
- 2018-08-31 CN CN201811048875.3A patent/CN108843487A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630433A (en) * | 2019-10-15 | 2019-12-31 | 王毅 | Multi-blade wind-following variable-pitch impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181120 |
|
| WD01 | Invention patent application deemed withdrawn after publication |