UA150164U - Coaxial wind farm - Google Patents

Abstract

Coaxial wind farm comprises gondola, guide blade, main blade, foundation, support, generator, shaft, guide shaft, gearbox, blade rim, ropes, T-fasteners, tie brackets, bolted connection, U-shaped rollers, ring connection, blade frame, bent support, propeller, rotary gear, planetary gear, solar gear. In this case, the guide blade and the main blade move coaxially. The blade rim is fixed to the guide blade by means of a T-mount; inside which ropes are fixed with tie brackets. Along the rim of the blade, U-shaped rollers rotate on both sides, which are fixed to the frame of the blade, which is fixed by means of annular connections to the main blade. The shaft of the guide blade, made in the form of a solar gear, transmits force to the main blade using a planetary transmission. The main blade has a bent support with a propeller at the end. The bent support can be rotated around the axis by means of a rotary gear.

Description

The useful model belongs to green energy, namely wind power plants (hereinafter referred to as wind power plants), in particular coaxial wind power plants.

A known wind generator, which contains a rotating nacelle to which wind blades are attached, and the entire structure of the nacelle is installed on a vertical support, with the possibility of rotation around its axis, which contains a generator, a reducer, a control system, a power electrical part, switching equipment, power cables. The support can have a cylindrical or conical shape and is fixed on a reinforced concrete foundation. Supports can be metal, reinforced concrete from reinforced concrete sections, combined Serial bladed wind generators

ZMUT-3.6-107, OE/3.6, M120 T-112, E-126 mlum.epegsop.de; mmlmu.meviav.sot; ulmulmu.deromeg.sot; 10. mm. vietepv.soti.

The disadvantage of this design is the large weight of the nacelle with blades, which is installed on the support, and, as a consequence, it is necessary to have large support diameters and metal capacity; during the operation of the blades of the wind generator, they bend significantly, creating vibrations, and the greater the wind speed, the greater the vibrations that are transmitted through the nacelle to the support. Vibrations are combated by increasing the strength and material capacity of vertical supports. Also, during hurricanes and storms, some supports cannot withstand the speed of the wind, which leads to their destruction.

The disadvantage of wind turbines of this type is that with the increase in the power of the wind generator, the size of the blades, nacelle and support increases, the increase in size increases the wind resistance of the support, nacelles, and when the wind blows, turbulent flows are discharged from the blades - this creates an oscillatory process perpendicular to the direction of the wind. When the frequency of oscillations of the support and gusts of the wind coincide, as a consequence of periodic turbulent flows, a parametric resonance may occur on some resonant harmonics. The increase in the size and power of wind generators leads to a greater probability of resonant oscillations at lower wind speeds.

Famous for sailing with a slanting sail that allows sailors to go upwind at speeds faster than the wind, the OBA-17 type (also known as VOKOO) is a 27-meter racing trimaran built by the American syndicate VMUM Ogasie Casipd for the 33rd America's Cup . A rigid sail, similar in design to an airplane wing, is installed on the trimaran. The wing consists of two sections separated by a vertical gap through which the airflow flows. The rear part of the sail consists of nine separate elements, each of which can be adjusted independently of the others. This design allows you to quickly change the profile, thereby adjusting the lifting force.

During the official competitions, OBA-17 showed the ability to develop a speed that is 2-2.5 times higher than the speed of the true wind (O5A-17 / Wikipedia / Electronic resource - Access mode: perv//t mikiredia.ogd/lmiki/O5A-17 (date of application: 18.03.19.

The disadvantage of this state-of-the-art catamaran is the very high cost of its construction solutions, which limits their distribution and is used only in extremely expensive elite sailing races.

The improvement of the wind generator in areas with weak winds belongs to the field of wind energy. The proposed wind generator is improved, such a design of the wind generator will not only increase the amount of generated electricity of an individual installation, but also contribute to increasing the efficiency of all wind generator installations.

The technical result consists in the rotation of the blade of the wind generator at a low wind of 2-3 m/s, which consists of two blades of small and large areas, the small blade serves as an accelerating part of the large blade due to the engagement of the small blade at a certain speed. The use of such an installation will be able to solve the issue of operation in low wind, also reduce costs for enterprises belonging to the 1st category of energy consumption, and use the wind installation as a second emergency power supply or as emergency lighting | (Patent KO Mo 186778 001 IPC gО301/02,

EO307/02. Wind generator. // Inventors: Shopinsky S.N. (KO), Vendyn S.V. (KSH) /

Patentee: Federal State Budget Educational Institution of Higher Education "Belgorod State Agrarian University named after V.Ya.

Horyn" // Application: 2018123409, 06/27/2018, publication date: 02/01/2019, Bull. Mo 4).

The disadvantage of this wind generator is: - low technical and economic indicators; - limited field of application, provision of small enterprises with backup and emergency power supply; - the front blade after acceleration is connected to the back blade with a pin and rotates in one direction.

The useful model is based on the task of creating a wind turbine system with 60 coaxial blades, which would allow:

- stable operation at different wind speeds; - to use it in energy and industry; - provide additional power from the blades more wind speed to the generator by increasing their relative speed; - have a reliable design that is easy to repair; - have an insignificant cost of this system; - have high efficiency; - have a wide field of application at all wind turbines; - have small dimensions; - have a low material capacity; - have a reliable level of operation and ease of maintenance.

The task is solved by the fact that the coaxial wind turbine works as follows: it has a guide blade that rotates towards the main blade and is fixed coaxially to it, then it is fixed on a nacelle that rotates around its axis, and it stands on a support fixed on the foundation.

The wind flow rotates the guide blade against the wind, which with the help of a gear reducer transmits the force of the force of the wind to the shaft, and through it to the main blade, which moves against the wind, creating a relative force, the horizontal projection of which rotates the blades in a circle and transmits it with the help of the shaft and reducer force on the generator that produces electric current.

A rim of the blade is installed around the circumference of the guide blade using a T-mount, which consists of two halves, in which ropes are fixed at the edges with the help of clamps and a bolted connection, to compensate for the radial forces arising when the blade rotates, and to reduce the level of vibration of the limbs blades

O-shaped rollers rotate around the rim of the blade on both sides, which are fixed to the frame of the blade from one end, and at the other end it is fixed to the main blade with the help of a ring connection, which allows you to change the angle of attack of the main blade during operation.

U-shaped rollers are installed on the rim of the blade in two pieces on both sides and are fixed with the help of the blade frame, which is attached to the main blade by two ring joints. O-shaped rollers are made of rubber and rotate around the rim of the blades

Zo moves in the opposite direction, and since the limbs move much faster than the base of the blade, the main blade is given a rapid acceleration through the frame.

To increase the efficiency of the wind generator and reduce its size, a propeller is installed perpendicular to the direction of the wind at the end of the main blade with the help of a bent support, which turns the blade, to compensate for this, the bent support of the propeller can be turned perpendicular to the resulting force using a rotary gear, to compensate for the resulting force, acceleration during rotation the main blade exerts additional force on the reducer and generator by increasing the speed of rotation of the propeller.

When the propeller rotates, there is a reactive moment, twisting of the propeller jet, gyroscopic moment, a moment that occurs when the propeller flows asymmetrically. All moments act in one direction and when the propeller rotates to the left, they bend the main blade towards the wind, compensating at the same time the force resulting from the rotation of the blade and the force of the wind that turns the blade, to prevent this, a blade frame is installed, which, rotating along the rim of the blade (fixed T-fastening to the guide blade), through O-shaped rollers provides additional acceleration force from the guide blade.

The main blade can change the angle of attack to the wind, while with the help of a rotary gear, the bent frame allows the propeller to have a direction perpendicular to the wind and in some cases to turn perpendicular to the resulting force.

When the directional blade moves downwind, it is fixed coaxially on the main blade and has a shaft in the form of a sun gear, which is connected to the satellites in the main blade, which are fixed with the help of a guide to the nacelle and rotate the ring gear towards it, which is fixed in the main blade (i.e. the planetary gear is installed inside the main blade), the force from it is transmitted by the shaft to the gearbox and the generator, which produces current.

The edge of the blade has the shape of a flat aerodynamic profile to reduce the frontal resistance of the oncoming aerodynamic flow.

The guide vane rotates towards the main vane, thus reducing the reactive moment and the level of vibration, also to reduce vibrations, the vanes have ropes inside that dampen a significant part of the vane vibrations. Ropes that are located inside the rim of the blade and blades are used steel, combined, polypropylene (to reduce weight), polymer and others.

The number of O-shaped rollers located on both sides of the blade rim is: two, four or more.

The control and mode of movement of the curved frame with the propeller, depending on the wind force, is carried out using sensors that transmit data wirelessly (via 50 IPegpei networks) to a computer installed in the nacelle.

The use of a coaxial wind turbine allows: - to use it in energy and industry; - increase the speed of the blades more than the speed of the wind and transfer force to the generator by increasing the relative speed; - have a reliable design that is easy to repair; - reduce the cost of this design by reducing the size of the blades; - have a wide field of application on existing wind turbines; - have small dimensions; - have a reliable level of operation and ease of maintenance; - not to lose wind energy in the so-called torn wind; - to expand the field of operation of wind turbines in slow winds; - Increase the efficiency and reduce the payback period; - reduce the production cost of 1 kW/h. of electricity, the level and payback period of the capital costs of the construction of the wind farm.

A useful model is explained with drawings.

In Fig. 1 shows a side view of a coaxial wind turbine, where: 1 - nacelle; 2 - guide vane; C - the main blade; 4 - foundation; 5 - support; 6 - generator; 7 - shaft; 7.1 - guide shaft; 8 - gearbox.

In Fig. 2 shows a section AA in fig. 1, where: 1 - gondola; 2 - guide vane; C - the main blade; 5 - support; 9 - the edge of the blade.

In Fig. 3 shows view B in Fig. 1, where: 2 - guide vane; C - the main blade; 9 - blade edge; 9.1 - ropes; 9.2 - T-fastening; 9.3 - tensioning brackets; 10-O-shaped roller; 11 - ring connection; 12 - blade frame.

In Fig. 4 shows view B in Fig. 2, where: C - the main blade; 9 - blade edge; 10-O-shaped roller; 11 - ring connection; 12 - blade frame.

In Fig. 5 shows a side view of a wind turbine with propellers, where: 1 - nacelle; 2 - guide vane;

C - the main blade; 5 - support; 6 - generator; 7 - shaft; 8 - reducer; 9 - blade edge; 10-O-shaped roller; 11 - ring connection; 12 - blade frame; 13 - bent support; 14 - propeller; 15 - rotary gear; 16 - planetary transmission; 16.1 - satellite; 16.2 - vehicle; 16.3 - sun gear; 16.4 - ring gear.

In Fig. 6 shows the section A1-AT in fig. 5, where: 1 - gondola; 2 - guide vane; C - the main blade; 5 - support; 9 - blade edge; 10-O-shaped roller; 11 - ring connection; 12 - blade frame; 13 - bent support; 14 - propeller; 15 - rotary gear.

The coaxial wind turbine works as follows: it has a guide blade 2, which rotates towards the main blade C and is fixed to it coaxially, the main blade is fixed on the nacelle 1, which rotates around its axis and stands on the support 5, which is fixed on the foundation 4 (Fig. 1, 2).

The wind flow rotates the guide blade 2 against the wind, which by means of the guide shaft 7.1 with the help of the reducer 8 transmits the force of the wind force to the shaft 7, and through it to the main blade 3, which moves against the wind, creating a relative force, the horizontal projection of which rotates the blades in a circle and transmits with the help of the shaft 7 and the reducer 8 forces to the generator 6, which produces electric current (Fig. 1, 2).

Around the ends of the guide blade 2, with the help of a T-mount 9.2, the edge of the blade 9 is installed, which consists of two halves, in which, with the help of clamps 9.3 and a bolted connection 9.4, ropes 9.1 are fixed at the edges to compensate for radial forces arising during rotation (Fig. 1, 2, 3).

On the rim of the blade 9, O-shaped rollers 10 rotate on both sides, which are fixed on the blade frame 12 at one end, and at the other end, the blade frame is fixed in the main blade З with the help of a ring connection 11, which allows changing the angle of attack of the main blade З during operation (Fig. 1, 2, 3).

U-shaped rollers 10 are installed on the rim 9 from two sides in two pieces and are fixed with the help of the blade frame 12, which is attached to the main blade C by two ring connections 11 (Fig. 3, 4).

To increase the efficiency of the coaxial wind turbine and reduce the dimensions at the end of the main blade C using a bent support 13, a propeller 14 is installed perpendicular to the direction of the wind, which during the rotation of the main blade C provides additional force due to an increase in the speed of rotation of the propeller 14 (Fig. 5, b) .

When the propeller 14 rotates, there is a reactive moment, twisting of the propeller jet, gyroscopic moment, a moment that occurs when the propeller flows asymmetrically; they all act in one direction and when the screw rotates to the left, they turn the blade C towards the wind, to prevent this, a blade frame 12 is installed, which, rotating along the rim of the blade 9 (fixed by a T-mount to the guide blade 3) through O-shaped rollers 10, provides additional acceleration force from guide blade 2 (Fig. 5, 6).

The main blade C can change the angle of attack to the wind, while with the help of the rotary gear 15, the bent support 13 allows the propeller 14 to have a perpendicular direction of movement to the wind (Fig. 5, 6).

During the movement of the guide blade 2 in the wind, it is fixed coaxially on the main blade C and exerts force with a shaft in the form of a sun gear 16.3 on the satellites 16.1, which are fixed by the carrier 16.2 to the nacelle 1, rotating the ring gear 16.4 in the opposite direction, which is fixed in the main blade 3, (i.e. the planetary gear 16 is installed inside the main blade 3), the force from it is transmitted by the shaft 7 to the reducer 8 and the generator 6, which produces current (Fig. 5).

All the work of the coaxial wind turbine described above makes it possible to achieve the stated technical results in the most effective way.

From the description and drawings of this utility model, it can be understood that various options for combinations of elements or their improvements have been implemented and are within the limits of this utility model.

List of items according to drawings: 1 - gondola; 2 - guide vane;

C - the main blade; 4 - foundation; 5 - support; b - generator; 7 - shaft; 7.1 - guide shaft;

Zo 8 - reducer; 9 - blade edge; 9.1 - rope; 9.2 - T-fastening; 9.3 - tensioning brackets; 9.4 - bolt connection; 10-O-shaped roller; 11 - ring connection; 12 - blade frame; 13 - bent support; 14 - propeller. 15 - rotary gear; 16 - planetary transmission; 16.1 - satellite; 16.2 - vehicle; 16.3 - sun gear; 16.4 - ring gear.

Claims (2)

USEFUL MODEL FORMULA 1. Coaxial wind power plant (further device) containing: nacelle, blades, foundation, support, generator, gearbox, which differs in that it contains guide blade, main blade, shaft, guide shaft, blade rim, ropes, T-fastener , tie rods, bolted connection, M-rollers, ring connection, blade frame, bent support, propeller, rotary gear, planetary gear, sun gear, while the guide blade and the main blade move coaxially; the rim of the blade is attached to the guide blade using a T-mount; ropes are fixed inside the rim of the blade with the help of tension clamps; O-shaped rollers, which are fixed on the frame of the blade, rotate along the rim of the blade on both sides; the blade frame is attached to the main blade using ring connections; the shaft of the guide blade, made in the form of a sun gear, transmits effort to the main blade using a planetary gear; the main blade has a bent support with a propeller at the end; the bent support can be turned about the axis by means of a turning gear. 2. The device according to claim 1, which is characterized by the fact that the O-shaped rollers are made of rubber, plastics, metal alloys, combined alloys and other materials; the blade frame is attached by ring connections to the main blade at at least one point; the number of O-like rollers located on both sides of the blade rim is: two, four or more. C. The device according to claim 1, which differs in that the carrier of the planetary transmission satellites is fixed to the nacelle, and the ring gear is fixed in the main blade; the edge of the blade has the shape of a flat aerodynamic profile; steel, combined, polypropylene (to reduce weight), polymer and other ropes are used. -- shk how else Ko E zhk Her Esh Y and Zh Izhe in ko Zhov yah Y her E; "3 NYA n v- and oh! and and and their neEZ scha poet sia KSMo and neh Moda y z I KU OVK Zhurn a scha COKO EN: she yaku Nr ri PO Ii EE SHE Fig. 1