EA028933B1 - Wind engine - Google Patents

Abstract

The invention is related to devices for utilization of wind energy, in particular, to wind-driven power plants. The objective of the invention is provision of higher efficiency and reliability by virtue of optimum disposition of vanes and lower loads on structural elements. The wind engine comprises a mast with a vertical rotation axis, a support in the form of a platform, vanes arranged in tiers and shifted by a certain angle relative to each other, and a power system including a flywheel, a reduction gear, an electric current generator that are linked by a vee belt transmission. The wind engine possesses mobility, i.e., it is able to change its locality promptly and to operate at low wind velocities.

Description

The invention relates to devices for the use of wind energy, and specifically to wind energy installations. The objective of the invention is to increase efficiency and reliability due to the optimal location of the blades and reduce the load on the structural elements. The wind turbine contains a stand with a vertical axis of rotation, a support in the form of a platform, blades installed in the direction of the axis and shifted in angle relative to each other, a power unit including a flywheel, a gearbox, and an electric current generator connected by a V-belt transmission. The wind turbine has mobility, i.e. the ability to quickly change your location and the ability to work at low wind speeds.

028933 Β1

028933 Β1

028933

The invention relates to devices for the use of wind energy, and specifically to wind energy installations.

A wind turbine is known, containing a tubular shaft with a vertical axis of rotation, flat rectangular blades with a mechanism for adjusting their angle of rotation, an electric current generator, a wind turbine deactivating device in a hurricane wind (patent KI No. 2049265; Р03И 3/00, 3/06, 7/06, 1995).

The disadvantage of the wind turbine is the low efficiency of use of wind energy due to the underdeveloped system of blades.

Also known is a wind turbine, taken as a prototype, containing a vertical tubular shaft, an electric current generator, blades having a turning mechanism and a wind turbine deactivating device for hurricane winds (patent: CS No. 376, 03.03 3/00, 03-03 3/04, 03 03/06 , 2006). The disadvantage of the known wind turbine is the imbalance of the system at which the occurrence of forced oscillations that coincide with the natural frequency, leading to an increase in their amplitude and the occurrence of disturbing operation resonance and loss of stability is possible.

The objective of the invention is to increase the efficiency and reliability due to a more developed system of blades and reduce loads.

The task is solved by the fact that a wind turbine containing a stand with a vertical axis of rotation, a support, blades, a flywheel, a generator of electric current, means for fixing the blades during a hurricane wind, according to the invention is equipped with a means of stabilizing the blades, with crossbars mounted on the stand at an angle of 120 ° in the diameter plane with a shift in angle relative to the higher tiers against the direction of rotation of the rack, while the blades are articulated on the cross-arms and have an asymmetrical shape divided by the axis of rotation on the core tkuyu and a long part is bent in a semicircle profile, the counterweight attached on a short side, a honeycomb shape, made of inclined longitudinal and transverse partition walls on the long side of the blade.

The support is made in the form of a vehicle platform equipped with suspension units for coaxial wheel pairs and a drawbar for coupling with a self-propelled vehicle.

The means of fixing the blades in case of hurricane wind contains a spring-loaded rod mounted on the traverse, and the corresponding slot in the form of a cylindrical recess located on the short part of the blade.

The blade stabilizer contains a pair of monopolar magnets, one of which is fixed on the traverse and the other on the lever of the short part of the blade with the possibility of repulsive action.

Blades are made of composite materials based on fiberglass and epoxy resin.

The invention is illustrated by drawings, where in FIG. 1 shows a general view of a wind turbine; in fig. 2 - top view wind turbine; in fig. 3 - view of the blade; in fig. 4 is a section of the blade along BB in FIG. in fig. 5 - installation of magnets; in fig. 6 - retainer.

The wind turbine contains a rack 1 with a vertical axis of rotation mounted on the platform 2 in the bearing assembly 3 on the cargo platform 4, the platform 2 contains the suspension assemblies 5 of the wheel pairs 6 and the drawbar 7 for coupling with the self-propelled vehicle.

Hour 1 consists of sections of cylindrical shape 8 fastened together, made of longitudinal corner elements and cross-links.

In the upper part of each section 8 fixed crosshead 9, located in the median plane in the form of radial rays emanating from the center at an angle of 120 °.

On the cross-arms, the blades 10 are pivotally mounted; they are separated by an axis of rotation onto the short upper part 11 and the long lower part 12. On the short part 11, the counterweight 13 is fixed and the bent profile 14 is made in the form of a pocket for air intake.

On the long part 12 there are inclined longitudinal 15 and transverse 16 partitions forming the cellular form of the working surface.

The blade stabilization means comprises a magnet 17 fixed on the cross beam 9 on the flexible plate 18 and the magnet 19 mounted on the lever 20 on the short part with the possibility of rotation together with the blade 10.

The means of fixing the blades 10 with a hurricane wind contains a rod 21, a spring 22, a lever 23 and a rod 24.

The power part of the wind turbine contains a flywheel 25, a gearbox 26 and a generator 27 connected by a V-belt transmission 28.

Wind turbine works as follows.

With the help of the drawbar 7, the wind turbine engages with the self-propelled vehicle (tractor, tractor, car) and is transported to the intended place of operation.

This may be a farm, household, pasture. After that, preparation for launch is made.

In the absence of wind, all the blades are balanced by the counterweight 13 and occupy an inclined position at an angle of 15-20 ° to the horizontal plane.

The first gusts of wind put pressure on the inclined longitudinal partitions 15 and unbent

- 1 028933

the profile 14 of the blade 10, setting it in motion around the hinge axis 29.

The blade goes down and takes a working position at an angle of 40-60 ° to the vertical.

The magnet 19, mounted on the lever 20, makes a turn together with the blade 10, enters the zone of influence of the magnet 17, creating a braking effect to stabilize the position of the blade 10, excluding vibration and bounce.

The wind pressure applied to the blade 10, creates a torque that causes the rack 1 to rotate and the flywheel 25 mounted on it, set to equalize the load and uneven rotation.

In connection with the location of the blades with a shift in the angle into the operating mode, they enter alternately in ascending order, starting with the blade of the lower tier.

This allows you to exclude the peak load 1, which takes place with the simultaneous action of several blades that are on the same vertical. This solves the issue of increasing the stability of the rack I.

The wind pressure on the blade 10 stops after the blade 10 self-aligns parallel to the oncoming air flow, taking the same horizontal position under the action of the counterweight 13.

Continuing motion, the blades 10 enter the headwind zone with their reverse side, which has a streamlined shape and small frontal resistance.

When hurricane wind blades 10 occupy a horizontal position, the rod 21 under the action of the spring 22 enters the groove 30 and locks the blade 10, providing it with minimal drag and stop the wind turbine.

To restore the working position of the blade 10, the rod 24 moves downward and with its protrusion presses the shoulder of the lever 23, which, overcoming the resistance of the spring 22, removes the rod 21 from the socket 30.

The blade under the action of the counterweight 13 takes a horizontal position at an angle of 15-20 ° to the horizontal plane.

When implementing the claimed invention, technical solutions are optimally used to increase efficiency and reliability due to the use of an odd number of blades within the tier and setting the blades with a shift in angle with respect to the ascending tiers, the meshed shape of the working sections of the rack, as well as mobility wind turbine.

Claims (5)

CLAIM 1. A wind turbine containing a support with a stand with a vertical axis of rotation, blades and a flywheel, connected to an electric current generator, a means of fixing the blades during a hurricane wind, characterized in that it is equipped with a means of stabilizing the blades, with cross-arms mounted on the stand at 120 ° angle diametral plane with a shift in angle relative to the higher tiers against the direction of rotation of the rack, while the blades are articulated on the cross-arms and have an asymmetrical shape divided by the axis of rotation on ROTKO and a long part is bent in a semicircle profile, the counterweight attached on a short side, a honeycomb shape, made of inclined longitudinal and transverse partitions, arranged on the long side of the blade. 2. Wind turbine according to claim 1, characterized in that the support is made in the form of a vehicle platform, equipped with suspension assemblies for coaxial pairs of wheels and a drawbar for coupling with a self-propelled vehicle. 3. A wind turbine according to claim 1, characterized in that the means for fixing the blades in case of hurricane winds comprise a spring-loaded rod mounted on the traverse and the corresponding slot in the form of a cylindrical recess located on the short part of the blade for fixing the blade in a horizontal position. 4. Wind turbine according to claim 1, characterized in that the means for stabilizing the blades contain a pair of magnets, one of which is fixed on the traverse and the other on the lever of the short part of the blade with the possibility of a repulsive action in the working position of the blade. 5. Wind turbine according to claim 1, characterized in that the blades are made of composite materials based on fiberglass and epoxy resin. - 2 028933