RU37396U1 - WIND INSTALLATION - Google Patents

Description

IPC F03D3 / 06

WIND INSTALLATION

The utility model relates to wind energy, in particular, to wind turbines with a vertical axis of rotation.

Wind turbines with a vertical axis of rotation are known in which vertical blades are mounted by means of traverses and extensions on a bearing assembly of a support (see, for example, ed. Certificate of the USSR No. 1657724, F03D3 / 06, 1991). The symmetrical arrangement of the blades does not provide self-starting of the wind turbine, as the oncoming blades create resistance equivalent to the force on the blades going in the wind.

A wind turbine is also known, which contains an annular rotor rotor with vertical blades fixed to the rotor ring, connected to the bearing-bearing assembly of the support in pairs with stretch marks, which are equipped with aerodynamic fairings (see ed. Certificate of the USSR No. 1671953, F03D3 / 06, 1991). A disadvantage of the known wind turbine is the lack of self-starting, as well as the fact that the stretch marks perceive not only centrifugal forces, but also the weight of the rotor, which reduces the reliability of the installation.

The problem solved by the utility model is to provide the wind turbine with a self-starting property while increasing the static and dynamic balancing of the rotor, the reliability and efficiency of the wind turbine.

The problem is solved in that in a wind turbine with a vertical axis of rotation, containing a support with a bearing unit and mounted on it by means of uniformly distributed intersecting stretch marks annular

rotor with blades symmetrically spaced around the circumference, according to

utility model, each blade is divided into upper and lower parts, which are located around the circumference of the rotor with a shift relative to each other by an angle equal to 90, the upper and lower parts of the blades are equipped with additional struts having an aerodynamic shape and installed with a negative angle.

The separation of the blades into two parts displaced around the circumference relative to each other allows for self-starting of the rotor, since the part of the blade that is currently moving in the wind creates a rotation force much greater than the other running part of the blade, which due to the shear has not yet turned against the wind with its maximum section .

The uniform distribution of intersecting stretch marks gives increased rotor stiffness in the radial direction, and the introduction of additional struts provides vertical stability of the rotor, both in static and in dynamics.

Giving struts an aerodynamic shape and installing them with a small

M negative angle shifts when the rotor rotates the forces acting up, which

relieves the structure from the force of weight, and tangentially to the circumference of the rotor rotation, which enhances its traction (like helicopter rotor blades).

The utility model is illustrated by drawings: FIG. 1 - general view of the wind turbine; FIG.

2 - view in plan; FIG. 3, - efforts arising on the aerodynamic strut.

The wind turbine comprises a support 1 with a bearing assembly 2, on which the rotor ring 4 is attached using stretch marks 3, blades 5 are installed on the rotor 4, having upper and lower parts located on the rotor ring with a 90 degree angle offset relative to each other . Each of the parts of the blades 5 is equipped with an aerodynamic strut 6, installed with a small negative

angle. Intersecting stretch marks 3 are fixed on the bearing assembly 2 with a uniform pitch.

Wind turbine works as follows. In the presence of wind, the parts of the blades 5, located with the largest section towards the wind, begin to spin the rotor 4, while the parts of the blades 5 that run into the wind are located with the smallest section towards the wind. Evenly distributed intersecting stretch marks 3 perceive all radial and partially vertical loads. Upon reaching certain revolutions, aerodynamic forces occur on the struts 6, which compensate for the vertical loads from the weight of the rotor 4 and create an additional component that increases the thrust of the rotor 4, like a rotor of a helicopter.

Thus, the separation of the blades 5 with the shift of the upper parts relative to the lower ones by an angle equal to 90 ensures self-starting of the rotor 4, the distribution of radial and axial loads on the braces 3 and struts 6 increases the balance and reliability of the rotor 4, and the installation of struts of an aerodynamic shape reduces axial loads and enhances the traction of the rotor 4, i.e. increases the overall installation efficiency.

The industrial applicability of the utility model is confirmed by the fact that all components of a wind turbine can be replicated in unlimited quantities.

Claims (1)

A wind turbine with a vertical axis of rotation, containing a support with a bearing assembly and fixed on it by means of uniformly distributed intersecting stretch marks by an annular rotor with blades symmetrically spaced around the circumference, characterized in that each blade is divided into upper and lower parts, which are arranged around the circumference with a shift relative to each other at an angle equal to 90 °, the upper and lower parts of the blades are equipped with additional struts with an aerodynamic shape and installed with a negative glom.