WO2016046604A1

WO2016046604A1 - Wind turbine

Info

Publication number: WO2016046604A1
Application number: PCT/IB2014/064858
Authority: WO
Inventors: Ислам АСКЕРОВ АББАС ОГЛИ
Original assignee: Ислам АСКЕРОВ АББАС ОГЛИ
Priority date: 2014-09-26
Filing date: 2014-09-26
Publication date: 2016-03-31

Abstract

The invention relates to wind turbines which convert the kinetic energy of wind into mechanical energy in order to produce electrical energy. The wind turbine comprises horizontal supporting axles (2) which are rigidly and immovably fixed on a shaft (1), where independent blades (3) fixed on a cylinder (4) rotating about the axis thereof on bearings (5) by up to 180 degrees act as working members; shock absorbers (6) for a working position and for a neutral position of the blade (3) are mounted on the axle (2) between the bearings (5); locks for the working position (7) and for the neutral position (8) are mounted on the inside of the cylinder (4) opposite the shock absorber (6); in the working position, the blades (3) are perpendicular to the velocity vector of the wind flow (Vw); the shock absorbers (6) permit an inclination of the blade (3) by up to 90 degrees under the pressure of the flow (Vw) in order to smooth out aerodynamic loads on the wind turbine; in the neutral position, the blades (3) are inclined about the supporting axle (2) by up to 90 degrees from the working position during a movement counter to the flow (Vw), thus neutralizing drag.

Description

Wind power plant

The invention relates to wind power plants (wind turbines), converting the kinetic energy of the wind into mechanical energy for the production of electrical energy.

At high average annual wind speeds, the wing lifting force is used to convert the kinetic energy of the flow into mechanical energy. Currently known wind turbines using wing lift remain ineffective in the absence of constantly high flow rates. Relative efficiency using the principle of wing lift is achieved only in areas with a high average annual wind speed. At an average annual wind speed of 5 m / s or less, the use of wing lift for the production of mechanical energy does not seem economically feasible. The disadvantage of this approach is the low percentage absorption of the kinetic energy of the flow by the blade profiles in the presence of an angle of attack. The way out at low flow rates is to increase the% absorption of the kinetic energy by the blade profiles, by reducing the angle of attack or by completely eliminating it, applying “frontal” absorption when the blade profiles are perpendicular to the velocity vector.

Wind turbines (JVfe АТ315724 (Т), 2006-02-15; DE60032430 (Т2), 2007-10-11; TW593884 (В), 2004-06-21; US2004164561 (A1), 2004-08-26; ЕР1808599 (А2 ), 2007-07-18) with horizontal axis of the blade on a vertical shaft, using “sail” contain a number of drawbacks. With an increase in the profile area in length and width, there is a moment of “twisting” at the ends of the blade. Complex control and fixing systems in working and neutral positions of the blades, etc. As a result, the reliability and efficiency of wind turbines are not.

The aim of the invention is the creation of a wind turbine (VD) of the vertical axis of the shaft converting the kinetic energy of the wind into mechanical, at low and high flow rates, while eliminating the disadvantages of the above, and not only. The new one is equipping the VD with horizontal axes fixedly mounted on the shaft with independent blades, built-in shock absorbers to smooth out aerodynamic loads with increasing pressure on the profiles. The transfer of the control system and fixing the working and neutral positions of the blade from the vertical axis of the VD to the horizontal bearing axes of the wind wheel (VK).

The bearing horizontal axes are rigidly and motionlessly fixed on the shaft, independent blades mounted on the cylinder act as working bodies. The cylinder is mounted on bearings rotating up to 180 degrees around its axis. On the axis between the bearings there is a shock absorber for the working and neutral positions of the blade. In the cylinder, on the inside, opposite the shock absorbers, the working and neutral position locks are installed. In the working position, the blade is perpendicular to the flow velocity vector; to smooth the aerodynamic loads on the wind turbines, the shock absorbers allow the blade to deviate up to 90 degrees under the flow pressure. In the neutral position, the blades deviate around the bearing axis to 90 degrees from the working position when moving against the flow, leveling the resistance. Rectangular blades are made of a profile with stiffeners directed perpendicular to the axis of the blade, consist of two parts of unequal size and balanced in weight relative to the axis.

Depending on the capacity of the installation, the number, type and type of functional elements of the blade (clamps of the working and neutral positions, shock absorbers, bearings, shapes and patterns of the profile) may differ. The bearing axes of the blade can be 3 or more.

The transfer of control and fixation mechanisms to the bearing axes in combination with the original features of the blades allows:

1) Effectively convert the kinetic energy of the flow at low and high speeds into mechanical;

2) Eliminate the twisting moment at the ends, when using elongated rectangular blades with an increased profile area for maximum absorption of kinetic energy of a stream;

3) To operate the blades independently, ensuring the rotation of the VK in a given direction;

4) Refuse a complex system of orientation to the flow velocity vector;

5) Start the wind turbine with a minimum operating wind speed of 0.5 m / s and with access to the estimated speed of 2 m / s;

6) The control system and fixing the position of the blades is simplified without automation and complex control mechanisms;

7) Achieved improved efficiency and durability of wind turbines;

8) Metal consumption is reduced and high profitability is achieved in the production of electric energy;

9) Builds industrial wind turbines in areas with average annual wind speeds of 2 meters and above. Description of drawings:

Figure 1 - Wind power installation;

Figure 2 - VC blade;

Figure 3 - Diagram of the torque created by the blade for one complete rotation of the shaft;

Figure 4 - The blade is in working position;

Figure 5 - The blade in the neutral position.

Figure 1 illustrates a wind power installation that includes a shaft VD 1, the bearing axis of the blades 2, the blades 3, the working cylinder 4, the bearing of the working cylinder 5, the shock absorber 6, the lock position 7, the lock neutral position 8, the profile of the blades 9, stiffeners 10, the generator electric current 11, drive belt 12, wind turbine shaft pulley 13, shaft mounts 14, thrust bearing 15, shaft bearing 15a, mount plate 16, anchor mount 17, foundation plate 18 and stiffener 19.

Figure 2 illustrates the blade VK.

Figure 3 illustrates a diagram of the torque generated by the blade in one complete rotation of the shaft. Figure 4 illustrates the blade in the operating position.

Figure 5 illustrates the blade in the neutral position: shock absorber working and neutral position 6; locking position 7; neutral lock 8; spring strut 20; persistent pillow of neutral position 21; spring guide 22; and a coil spring of a shock absorber 23. For the application of this invention in hydropower, where the dynamic loads are less, shock absorbers 6 of the working and neutral positions in FIG. 1 to replace with a clamp of working and neutral position.

Claims

Claim

1. A wind turbine (wind turbine) contains horizontal supporting axles (2) rigidly and motionlessly mounted on a shaft (1), where independent blades (3) mounted on a cylinder (4) rotating on bearings (5) rotate 180 degrees around its axis, on the axis (2) between the bearings (5), shock absorbers (6) of the working and neutral positions of the blades (3) are installed, in the cylinder (4) opposite the shock absorbers (6), the working (7) and neutral positions (8) are mounted ), in working position the blades (3) are perpendicular to the vect the velocity of the wind flow (Vw), to smooth the aerodynamic loads on the wind turbines, the shock absorbers (6) allow the blades (3) to deviate up to 90 degrees under flow pressure (Vw), in the neutral position the blades (3) deviate around the bearing axis (2) to 90 degrees from the working position when moving against the flow (Vw), leveling the resistance.