CN202946312U - Variable pitch wind turbine and wind driven generator - Google Patents
Variable pitch wind turbine and wind driven generator Download PDFInfo
- Publication number
- CN202946312U CN202946312U CN2012206163668U CN201220616366U CN202946312U CN 202946312 U CN202946312 U CN 202946312U CN 2012206163668 U CN2012206163668 U CN 2012206163668U CN 201220616366 U CN201220616366 U CN 201220616366U CN 202946312 U CN202946312 U CN 202946312U
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- spring
- conversion system
- energy conversion
- wind energy
- blade
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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 utility model provides a variable pitch wind turbine and a wind driven generator. The variable pitch wind turbine comprises a paddle, wherein a variable pitch rotary shaft is arranged on the root portion of the paddle, a rotation balancing body is arranged on the variable pitch rotary shaft, and the variable pitch rotary shaft is connected with a movable press plate through a connecting rod mechanism. When the balancing body drives the variable pitch rotary shaft to rotate, the connecting rod mechanism drives the movable press plate to push and press a spring set, wherein the spring set comprises at least two springs which are a first interventional spring and a second interventional spring. When the movable press plate pushes and presses the spring set, the first interventional spring is pushed and pressed first, and when the first interventional spring is compressed to a given extent, the movable press plate is in contact with the second interventional spring and pushes and presses the second interventional spring. The elasticity modulus of the first interventional spring is bigger than that of the second interventional spring. The variable pitch wind turbine and the wind driven generator have the advantage of being long in service life.
Description
Technical field
The utility model relates to a kind of wind energy conversion system, particularly has the wind energy conversion system of variation paddle structure.
Background technique
Wind energy conversion system is wind energy to be converted to the device of mechanical energy, and traditional windmill is exactly a kind of wind energy conversion system commonly used.Utilizing equipment that wind energy generates electricity further to convert the mechanical energy of wind energy conversion system conversion to electric energy in modern society is used.
Because the speed of nature apoplexy is constantly to change, when wind speed increases sharply, the instantaneous increase of the wind energy that wind energy conversion system is caught, this impacts the wind energy conversion system produce power, and the electric energy that these transformation of energy become also can produce large impact to circuitry.This impact can have a negative impact for storage battery or the load equipment (electrical network) that wind energy conversion system namely connects, and even can cause the damage of device.Suddenly increase for fear of this wind speed the impact that brings, people have invented the feather structure.Pulp distance varying mechanism is exactly more than rated wind speed, propeller pitch angle is regulated in variation according to wind speed at any time, control the mechanical energy that absorbs, the ability to bear that guarantees on the one hand to obtain maximum energy and do not exceed the wind turbine system maximum reduces wind-force on the other hand to the impact of wind energy conversion system driving chain mechanism.Concrete is exactly when wind speed is larger, and the feather structure makes the blade angle of attack reduce; Wind speed hour makes the blade angle of attack increase.
The structure that realizes above-mentioned feather function has multiple, relatively is typically Soviet speed regulator and Aerowatt device.The principle of these two kinds of devices is basic identical, is provided with at the root of blade to become the oar rotatingshaft, becomes simultaneously the counterweight part is set on the oar rotatingshaft, become the oar rotatingshaft and also connect a movable pressure plate by connecting rod, two springs are set under movable pressure plate, and one harder, and one softer.The inertial force that the rotation of counterweight part produces when the wind speed overrate makes blade rotate around the axis that becomes the oar rotatingshaft, thereby makes the blade angle of attack diminish.Simultaneously, become the described connecting rod of rotating drive of oar rotatingshaft, and then push described movable pressure plate Compress Spring.At first pressing plate compresses soft spring, and after soft spring was deformed to a certain degree, pressing plate was pressed onto hard spring, and this moment, hard spring and soft spring were had an effect simultaneously.The existence of pressing plate and spring makes the change in angle of attack of blade in the scope that can control, makes feather play due effect.
The problem that above-mentioned Soviet speed regulator and Aerowatt device exist is: due in becoming the oar process, at first need to compress soft spring, due to the polytrope of natural wind, number of times and the amplitude of soft spring distortion are all higher like this, fatigue damage more easily occurs, and reduces the working life of structure.
The model utility content
In order to solve the problem that reduces in working life that the existing wind energy conversion system that carries Soviet speed regulator and Aerowatt device causes due to spring fatigue, the utility model provides a kind of feather wind energy conversion system, by adjusting the working life of having improved wind energy conversion system that arranges of spring.And the difference of the annual mean wind speed of the Environmental Conditions concrete according to the user is set specific initial settling angle degree when mounted, brings into play to greatest extent the startability of blade.
The technical solution of the utility model is as follows:
the feather wind energy conversion system, comprise blade, the root of described blade is provided with and becomes the oar rotatingshaft, be provided with the rotary balance body on described change oar rotatingshaft, described change oar rotatingshaft is connected with movable pressure plate by linkage mechanism, when described balanced body drives described change oar rotatingshaft rotation, described linkage mechanism drives described movable pressure plate pushing cluster spring, described cluster spring comprises at least two springs, be respectively first and get involved spring and the second intervention spring, at first push first and get involved spring when the described cluster spring of described movable pressure plate pushing, movable pressure plate contacts and pushes described second and gets involved spring when described first gets involved spring-compressed to predetermined extent, described first gets involved the Young's modulus of spring greater than the Young's modulus of described the second intervention spring.
Described feather wind energy conversion system is provided with compressing structure, and described compressing structure extruding described first gets involved spring, makes described the first intervention spring be in compressive state.
Described compressing structure comprises the screw bolt and nut that is arranged on described the first intervention spring end, and described nut moves to push described the first intervention spring along the axial direction of described bolt.
Described blade is connected with wheel hub, and described wheel hub is socketed on main shaft, and described main shaft and described wheel hub contact-segment are taper, and is interference fit between described wheel hub and described main shaft.
Described feather wind energy conversion system comprises that also the sense of rotation of the screw thread of described boss bolt is consistent with the sense of rotation of described blade from the boss bolt of the fixing described wheel hub of described spindle nose.
Be disposed with locked spacer and backing plate between the head of described boss bolt and described main shaft; Be provided with fastening structure between described backing plate and described wheel hub.
Described fastening structure is the screw fastening structure.
Be provided with straight flange at described boss bolt head, described locked spacer is along the upwards bending of described straight flange.
Be provided with position structure between described locked spacer and described backing plate.
Wind-driven generator is provided with the above wind energy conversion system.
Technique effect of the present utility model:
The utility model is adjusted the intervention order (movable pressure plate presses the order of two springs in other words) of two springs under movable pressure plate on the basis of Soviet speed regulator and Aerowatt device.In the starting stage that wind speed increases, at first movable pressure plate presses hard spring (is the first large intervention spring of Young's modulus, as follows), when wind speed further increases, first gets involved camber of spring presses soft spring (being the second less intervention spring of Young's modulus, as follows) again after to a certain degree.So, in low wind speed fitful wind situation, because active force is less, the action of hard spring just can be adjusted the change oar, soft spring need not intervention.Thereby just reduced two coacting number of times of spring and movement range, therefore reduced the possibility of spring fatigue infringement.This also just means the working life that has promoted the feather wind energy conversion system from variation paddle structure this aspect, simultaneously and the difference of the annual mean wind speed of the Environmental Conditions concrete according to the user, set when mounted specific initial settling angle degree, bring into play to greatest extent the startability of blade, realized the purpose of this utility model.
Adopt the wind-driven generator of the utility model wind energy conversion system because extended working life the working life that has promoted the feather wind energy conversion system.
Description of drawings
Fig. 1 is an example of the utility model feather wind energy conversion system, and one of them propeller shank is analysed and observe.
Fig. 2 is the sectional view of A-A direction shown in Figure 1.
Fig. 3 is that view shown in Figure 2 is assembled to the phase diagram on main shaft.
Fig. 4 is the left view of spindle mounted part in Fig. 3.
In figure, sign is described as follows:
10, blade; 11, rotary balance body; 12, become the oar rotatingshaft;
20, connecting rod; 21, wheel hub; 22, first get involved spring; 23, second get involved spring; 24, movable pressure plate; 25, stationary platen; 26, bolt; 27, nut;
30, main shaft; 31, fastening screw trip bolt; 32, backing plate; 33, locked spacer bend section; 34, bolt; 35, locked spacer; 36, pin;
40, head straight flange.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is elaborated.
Can see in conjunction with Fig. 1 and Fig. 2, the principle of feather wind energy conversion system of the present utility model is identical with the principle of the wind energy conversion system that carries Soviet speed regulator and Aerowatt device.Concrete, feather wind energy conversion system of the present utility model comprises blade 10, the root of blade 10 is provided with and becomes oar rotatingshaft 12.A plurality of blades 10 of wind energy conversion system rotate around a rotating center (referred to as the wind energy conversion system rotating center) under trying hard to recommend outside and moving, each blade of feather wind energy conversion system also has spinning motion, and each blade 10 of long axis direction that namely is parallel to blade 10 has a rotation center.Existence due to this rotation center, blade 10 can be adjusted the area of windward side, namely adjust lifting surface area, thereby can adjust blade 10 around the speed of wind energy conversion system rotating center rotation, make blade 10 change more steady around wind energy conversion system rotating center rotational speed.Becoming oar rotatingshaft 12 is exactly the rotatingshaft that blade 10 is realized above-mentioned rotation.Also be provided with rotary balance body 11 on change oar rotatingshaft 12.To example shown in Figure 2, rotary balance body 11 is arranged on and becomes on oar rotatingshaft 12, and is fixedly connected with blade 10 at Fig. 1.Rotary balance body 11 is cylindrical bodys, and this cylindrical axis is substantially vertical with the axis that becomes oar rotatingshaft 12.When blade 10 rotated around the wind energy conversion system rotating center under the wind-force effect, rotary balance body 11 also was rotated with blade 10, because rotation has produced inertial force, made rotary balance body 11 around becoming 12 deflections of oar rotatingshaft.Balanced body 11 drives blade 10 around the deflection that becomes oar rotatingshaft 12 aforesaid rotation occurs.
Can further see from Fig. 2, become oar rotatingshaft 12 hinged with an end of connecting rod 20, the other end of connecting rod 20 and movable pressure plate 24 are hinged.Namely becoming oar rotatingshaft 12 is connected with movable pressure plate 24 by linkage mechanism.When the blade 10 aforesaid time rotationals of generation, the structure from Fig. 2 can draw, and becomes oar rotatingshaft 12 drivening rods 20, and then driving movable pressure plate 24 moves upward at right and left shown in Figure 2.As can see from Figure 2, be fixedly installed a stationary platen 25 on wheel hub 21, be provided with one group of spring between stationary platen 25 and movable pressure plate 24: first gets involved spring 22 and second gets involved spring 23.Movable pressure plate 24 during to stationary platen 25 motion (when wind-force increases) at first press first and get involved spring 22, press again second when first after getting involved that spring 22 is compressed and being deformed to a certain degree and get involved spring 23.At this moment, first gets involved spring 22 and the second elastic deformation force's acting in conjunction that gets involved spring 23 on movable pressure plate 24, and then to the rotation generation effect of blade 10.First gets involved the Young's modulus of spring 22 greater than the Young's modulus of the second intervention spring 23, generically explains it is that the first intervention spring 22 to the second intervention springs 23 are hard.Because the Young's modulus of the first intervention spring 22 is large, can tackle interior in a big way wind-force and change, make first to get involved spring 22 and the second intervention coacting number of times of spring 23 and movement range reduction, so reduced the possibility of spring fatigue infringement.This also just means the working life that has promoted the feather wind energy conversion system from variation paddle structure this aspect.
Be also shown in Fig. 2, pass movable pressure plate 24 and be provided with bolt 26, the nut 27 that matches with bolt 26 pushes up and is pressed on movable pressure plate 24.By the position of adjusting nut 27 at bolt 26, can be so that the first intervention spring 22 be in different compressive states.The first different compressive state that gets involved spring 22 has determined that first gets involved the spring 22 aforementioned initial angles of making corresponding wind speed of used time and blade 10 of generation.In other words, the utility model can be concrete according to the user the difference of annual mean wind speed of Environmental Conditions, set when mounted the specific initial settling angle degree of blades 10 by adjusting nut 27, and the parameters such as wind speed when becoming oar, bring into play to greatest extent the startability of blade 10.
In order further to promote the working life of the utility model feather wind energy conversion system, the utility model improves the structure of wind energy conversion system and main shaft attachment portion, and concrete improvement describes in conjunction with Fig. 3 and Fig. 4.
As can see from Figure 3, wheel hub 21 centers are provided with conical through-hole, and this through hole is socketed on main shaft 30.Main shaft 30 has and the corresponding conical outer surface of described through hole.Be interference fit between wheel hub 21 and main shaft 30.Main shaft 30 has been avoided splining on main shaft 30 with this assembling mode of wheel hub 21.The existence of keyway easily makes main shaft 30 produce stress and concentrates, and then is damaged under the fatigue load effect.
Opening portion at wheel hub 21 the above conical through-hole is provided with backing plate 32.The top of backing plate 32 (being the left side of backing plate 32 in Fig. 3) is provided with locked spacer 33.Bolt 34 passes backing plate 32 and locked spacer 33 is connected on main shaft 30.Backing plate 32 is fixed on (in conjunction with Fig. 4) on wheel hub 21 by fastening screw trip bolt 31.Downwind sees that wind wheel is to turn clockwise, and the sense of rotation of the screw thread of bolt 34 is right-handed thread.The sense of rotation of screw thread is consistent around the direction of wind energy conversion system rotating center rotation with blade 10.The sense of rotation that is the screw thread of bolt 34 makes blade 10 can further screw bolt 34 around the inertial force that the rotation of wind energy conversion system rotating center produces, and avoids bolt 34 loosening.
The head (being the left end of bolt 34 in Fig. 3) of seeing bolt 34 from Fig. 3 and Fig. 4 is Hexagon, and along a hexagonal straight flange (head straight flange 40), locked spacer 35 is (be in Fig. 3 left direction) bending upwards, forms a locked spacer bend section 33.Simultaneously, locked spacer 35 some downwards (be in Fig. 3 to the right direction) be bent to form a pin 36.Pin 36 stretches into a pin-and-hole of backing plate 32 relative set, makes locked spacer 35 relative fixing with the position between backing plate 32.In the relatively-stationary situation in position between locked spacer 35 and backing plate 32, locked spacer bend section 33 matches with head straight flange 40, prevents that further bolt 34 is loosening.
Employing has advantages of longer service life as the wind-driven generator of wind energy conversion system as described in Fig. 1 to Fig. 4.
It should be noted that the above only is preferred embodiment of the present utility model, not thereby limit scope of patent protection of the present utility model, the utility model can also adopt equivalent technologies to replace.Therefore the equivalence that all utilizations specification of the present utility model and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and all in like manner all be contained in the scope that the utility model contains.
Claims (10)
1. feather wind energy conversion system, comprise blade, the root of described blade is provided with and becomes the oar rotatingshaft, be provided with the rotary balance body on described change oar rotatingshaft, described change oar rotatingshaft is connected with movable pressure plate by linkage mechanism, when described balanced body drives described change oar rotatingshaft rotation, described linkage mechanism drives described movable pressure plate pushing cluster spring, it is characterized in that: described cluster spring comprises at least two springs, be respectively first and get involved spring and the second intervention spring, at first push first and get involved spring when the described cluster spring of described movable pressure plate pushing, movable pressure plate contacts and pushes described second and gets involved spring when described first gets involved spring-compressed to predetermined extent, described first gets involved the Young's modulus of spring greater than the Young's modulus of described the second intervention spring.
2. feather wind energy conversion system according to claim 1, it is characterized in that: be provided with compressing structure, described compressing structure extruding described first gets involved spring, makes described first to get involved spring and be in compressive state.
3. feather wind energy conversion system according to claim 2 is characterized in that: described compressing structure comprises and is arranged on the described first screw bolt and nut of getting involved spring end, and described nut moves to push described first along the axial direction of described bolt and gets involved spring.
One of according to claim 1 to 3 described feather wind energy conversion system, it is characterized in that: described blade is connected with wheel hub, described wheel hub is socketed on main shaft, described main shaft and described wheel hub contact-segment are taper, and are interference fit between described wheel hub and described main shaft.
5. feather wind energy conversion system according to claim 4, is characterized in that: comprise that also the sense of rotation of the screw thread of described boss bolt is consistent with the sense of rotation of described blade from the boss bolt of the fixing described wheel hub of described spindle nose.
6. feather wind energy conversion system according to claim 5 is characterized in that: be disposed with locked spacer and backing plate between the head of described boss bolt and described main shaft; Be provided with fastening structure between described backing plate and described wheel hub.
7. feather wind energy conversion system according to claim 6, it is characterized in that: described fastening structure is the screw fastening structure.
8. feather wind energy conversion system according to claim 7, it is characterized in that: be provided with straight flange at described boss bolt head, described locked spacer is along the upwards bending of described straight flange.
9. feather wind energy conversion system according to claim 8, is characterized in that: be provided with position structure between described locked spacer and described backing plate.
10. wind-driven generator is characterized in that: be provided with as wind energy conversion system as described in one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206163668U CN202946312U (en) | 2012-11-20 | 2012-11-20 | Variable pitch wind turbine and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206163668U CN202946312U (en) | 2012-11-20 | 2012-11-20 | Variable pitch wind turbine and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946312U true CN202946312U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206163668U Expired - Lifetime CN202946312U (en) | 2012-11-20 | 2012-11-20 | Variable pitch wind turbine and wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946312U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590962A (en) * | 2018-06-29 | 2018-09-28 | 北京金风科创风电设备有限公司 | Feathering device of wind generating set, pitch control system and pitch control method thereof |
| CN111405384A (en) * | 2020-03-02 | 2020-07-10 | 浙江英丽科技有限公司 | Micro base station |
| CN111976690A (en) * | 2020-08-24 | 2020-11-24 | 一汽解放汽车有限公司 | Air booster control valve assembly and air booster |
-
2012
- 2012-11-20 CN CN2012206163668U patent/CN202946312U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590962A (en) * | 2018-06-29 | 2018-09-28 | 北京金风科创风电设备有限公司 | Feathering device of wind generating set, pitch control system and pitch control method thereof |
| CN108590962B (en) * | 2018-06-29 | 2024-04-19 | 北京金风科创风电设备有限公司 | Feathering device, pitch-changing system and pitch-changing method of wind generating set |
| CN111405384A (en) * | 2020-03-02 | 2020-07-10 | 浙江英丽科技有限公司 | Micro base station |
| CN111976690A (en) * | 2020-08-24 | 2020-11-24 | 一汽解放汽车有限公司 | Air booster control valve assembly and air booster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZK ENERGY (YIYANG) NEW ENERGY TECHNOLOGY CO.,LTD. Assignor: ZK ENERGY SCIENCE & TECHNOLOGY Co.,Ltd. Contract record no.: 2015430000088 Denomination of utility model: Variable pitch wind turbine and wind driven generator Granted publication date: 20130522 License type: Exclusive License Record date: 20150703 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |