| Start of section
Production, amateur Radio amateurs Aircraft model, rocket-model Useful, entertaining |
Stealth Master
Electronics Physics Technologies Inventions |
Secrets of the cosmos
Secrets of the Earth Secrets of the Ocean Tricks Map of section |
  |
| Use of the site materials is allowed subject to the link (for websites - hyperlinks) | |||
Navigation: => |
Home / Patent catalog / Catalog section / Back / |
|
INVENTION
Patent of the Russian Federation RU2290533
Wind turbine for wind turbine
The name of the inventor: Cheboksarov Valeriy Vikulovich (RU); Cheboksarov Victor Valerevich
The name of the patent holder: Far Eastern State Technical University
Address for correspondence: 690950, г.Владивосток, ГСП, ул. Pushkinskaya, 10, FESTU, Patent Department
Date of commencement of the patent: 2005.06.27
The invention relates to the field of wind energy. The technical result consists in creating a design of blades capable of controllably changing their geometry during operation and is provided by the fact that in the windmill containing the rotor, which is rotatably mounted with respect to the vertical axis, the blades fixed asymmetrically on the rotor body with the possibility of rotation under action Winds relative to their vertical axes, and blade rotation limiters, according to the invention, each blade is made in the form of a slat, its central part and flap, which together form a slightly convex blade profile symmetrical with respect to its chord joining the most distant points of the profile. The slat and flap are hingedly connected to the central part of the blade on said profile chord. Each blade is equipped with a mechanism for coordinated rotation of the slat and flap in opposite directions relative to the central part of the blade and a differential mechanism for the rotation of the slat, for example planetary, where the shafts of the slat and the central part of the blade are coaxially connected to the two center wheels of the differential mechanism for turning the slat, and the slat carrier is attached to the rotor body .
DESCRIPTION OF THE INVENTION
The invention relates to the field of wind energy.
Wind-driven engines are known, for example, of the type of Darya installations, which contain a rotor rotating around a vertical axis, blades fixed vertically on the rotor body, their rotation around the vertical axis being carried out during design and manufacturing and does not change during engine operation (see Technical- Economic basis for the accelerated development of wind energy. Background information / Lytkher VM - M .: Informenergo, 1990. - 68 pp., P. 15-26).
The main disadvantage of such installations is the need to pre-untwist the engine to operating speed.
A wind turbine is also known in which a rotor with a vertical axis of rotation contains blades fixed asymmetrically on the rotor body with the possibility of rotation relative to their vertical axes under the influence of wind, as well as blade rotation limiters (see RF patent No. 2253038, Bulletin No. 15, 2005 .).
This design of the wind turbine most closely matches most of the features with the proposed technical solution and is used as a prototype.
The disadvantage of the prototype is the need to have elastic blades to achieve their optimal geometry during operation, it is difficult to control the amount of deflection of such blades.
The objective of the claimed solution is to create a design of blades that can control their geometry in the course of work.
The technical result achieved in solving the task is expressed in that the blades are made of rigid components interconnected by the mechanism of coordinated rotation, and when the blades are freely rotated by the wind their geometry changes in accordance with the angle of rotation relative to the rotor housing and the wind force .
The task is achieved by the fact that the windmill comprising a rotor mounted rotatably with respect to a vertical axis, the blades fixed asymmetrically on the rotor body with the ability to rotate under the action of the wind relative to their vertical axes, and the blade rotation limiters, is characterized in that each blade is made In the form of a slat, its central part and flap, together forming a slightly convex blade profile, symmetrical with respect to its chord joining the most distant points of the profile, the slat and flap being hingedly connected to the central part of the blade on said profile chord, each blade being equipped with a coordinated Rotation of the slat and flap in opposite directions relative to the central part of the blade and a differential mechanism for the rotation of the slat, e.g. planetary, where the shafts of the slat and the central part of the blade are coaxially connected to the two center wheels of the differential mechanism for turning the slat, and the carrier of the differential mechanism of rotation of the slat is attached to the rotor body.
In addition, the rotation limiters of each blade are made in the form of two stops fixed to the rotor housing so that the angular gaps between them and adjacent blade surfaces, when moving towards the wind, are 45 degrees.
In this case, the stops are spring-loaded.
In addition, the slat of each blade is connected to the corresponding center wheel of the differential mechanism by means of an elastic coupling.
In this case, the elastic coupling is made in the form of a torsion shaft located on the axis of rotation of the slat, one end of the torsion being fixed to the center wheel of the differential mechanism and the second to the upper end of the slat.
And the length of the slat is 0,15 ... 0,25 from the maximum chord of the profile of the blade.
A comparative analysis of the essential features of the proposed solution, analogs and prototype testifies to its compliance with the criterion of "novelty".
The distinctive features of the claims are solved by the following functional tasks.
The signs "... each blade is made in the form of a slat, its central part and flap, together forming a slightly convex blade profile, symmetrical with respect to its chord joining the most distant points of the profile, the slat and flap being hinged to the central part of the blade on said Chord profile ... "- allow to realize in the design, consisting of rigid elements, the ability to change the geometry of the blade.
The sign "... the blade is equipped with the mechanism of the coordinated turning of the slat and flap in opposite directions relative to the central part of the blade ..." - allows to provide a given change in blade geometry.
The feature "... the blade is equipped with ... a differential mechanism for turning the slat, for example planetary, where the slats and the central part of the blade are coaxially connected to the two center wheels of the differential mechanism, and the carrier of the differential mechanism for turning the slat is attached to the rotor housing" - allows to ensure a coordinated turn Slat and central part relative to the rotor housing.
The sign "... the rotation limiters of each blade are made in the form of two stops fixed on the rotor housing so that the angular gaps between them and adjacent blade surfaces, when moving towards the wind, are 45 degrees" - guarantees optimum rotation of the blades to ensure the best traction Characteristics of the wind turbine.
The sign "... the stops are spring-loaded" - allows you to increase the angle of rotation of the blades and increase the thrust of the windmill rotor when wind increases.
The sign "... the slat ... is connected to the corresponding center wheel of the differential mechanism by means of an elastic connection" - allows to realize the possibility to additionally change the angle of rotation of the slat under the influence of wind force.
The sign "... the elastic connection is made in the form of a torsion bar located on the axis of rotation of the slat, one end of the torsion being fixed on the center wheel of the differential mechanism, and the second at the upper end of the slat" - this elastic coupling is most simple and reliable.
The sign "... the length of each slat is 0,15 ... 0,25 from the maximum chord of the blade profile" - it allows to provide optimal characteristics of the blade.
 |
 |
 |
The essence of the invention is explained by the drawings. 1 is a top view of a wind turbine. FIG. 2 shows a design of a blade with a coordinated swing-flap and flap mechanism and a differential mechanism. FIG. 3 shows the arrangement of the limiting stops on the rotor housing. |
The wind turbine construction comprises a rotor 1 having blades on the body consisting of a slat 2, a central part 3, a flap 4, a slat shaft 5, a flap shaft 4, a shaft 7 of the central part. In the windmill design, there is a differential mechanism consisting of a first central wheel 8, a second central wheel 9 and a carrier 10 fixed to the rotor body 1. On the carrier 10, the wheels 11 are freely rotatable connecting the two central wheels 8 and 9. The coordinated turning mechanism Slat 2 and flap 4 consists of two identical cranks 12 and 13. Crank 12 is mounted on shaft 5 of slat 2, and crank 13 is in bearing 14 on the central part 3 of the blade. The cranks 12 and 13 are connected by a connecting rod 15. The shaft 6 of the flap 4 is connected to the crank 13 by means of two identical wheels 16 and 17. On the rotor body 1 are spring-loaded stops 18 and 19, and on the central wheel 9 a sector 20 is fixed.
The blade positions in FIG. 1 are indicated in Latin letters from "a" to "h".
The angles between the stops 18 and 19 and the sector 20 are indicated in FIG. 3 - 
and 
.
The design works as follows.
Under the action of the wind, all the blades rotate on the shafts 7 and automatically acquire the geometry shown in FIG. 1 in Latin letters from "a" to "h". This is due to the asymmetric arrangement of the shaft 7 in the blade design. The central wheel 9 rotates within the angles and Between the sector 20 and the stops 18 and 19. Simultaneously, the central wheel 8 and the associated shaft 5 with the slat 2 which is fixed to the upper end of this shaft and the crank 12 are rotated through the wheels 11. Via the connecting rod 15, the motion is transmitted to the crank 13, wheels 16 and 17, a shaft 6 with a flap 4, which receives a coordinated rotation opposite to the rotation of the slat 2. When the wind increases, the central part 3 of the blade has the ability to compress the springs of the stops 18 and 19 and increase the angle of rotation, and the slat 2 to tighten the torsion shaft 5, which leads And to a consistent flap position change 4.
Thus, the blade design, consisting of rigid elements, can behave similarly to an elastic blade, but the geometric parameters become controllable.
CLAIM
A wind turbine comprising a rotor mounted rotatably with respect to a vertical axis, blades fixed asymmetrically on the rotor body with the possibility of rotation under the action of wind relative to their vertical axes, as well as blade rotation limiters, characterized in that each blade is in the form of a slat, Its central part and flap together forming a slightly convex blade profile symmetrical with respect to its chord joining the most distant points of the profile, the slat and flap being hingedly connected to the central part of the blade on said chord of the profile, each blade being equipped with an aligned flap and flap mechanism In opposite directions with respect to the central part of the blade and the differential mechanism for the rotation of the slat, for example planetary, where the shafts of the slat and the central part of the blade are coaxially connected to the two center wheels of the differential mechanism for turning the slat, and the carrier of the differential mechanism of rotation of the slat is attached to the rotor body.
2. The wind turbine according to claim 1, characterized in that the rotation stops of each blade are made in the form of two stops fixed to the rotor housing so that the angular gaps between them and adjacent blade stop surfaces, when moving toward the wind, are 45 °.
3. A wind turbine according to claim 1 or 2, characterized in that the abutments are spring-loaded.
4. Wind turbine according to claim 1, characterized in that the slat of each blade is connected to the corresponding center wheel of the differential mechanism by means of an elastic coupling.
5. The wind turbine according to claim 1 or 4, characterized in that the elastic coupling is made in the form of a torsion bar located on the axis of rotation of the slat, one end of the torsion bar being fixed to the center wheel of the differential mechanism and the second to the upper end of the slat.
6. The wind turbine according to claim 1, characterized in that the length of each slat is 0.15 to 0.25 of the maximum chord of the blade profile.
print version
Publication date 31.01.2007gg
Comments
Commenting on, remember that the content and tone of your message can hurt the feelings of real people, show respect and tolerance to your interlocutors even if you do not share their opinion, your behavior in the conditions of freedom of expression and anonymity provided by the Internet, changes Not only virtual, but also the real world. All comments are hidden from the index, spam is controlled.