RU2240443C1 - Vertical-shaft wind-driven power unit - Google Patents

Abstract

FIELD: wind power engineering; rotary wind-driven power units.

SUBSTANCE: proposed unit is, essentially, wind-electric set assembled of more than one (three or more) isosceles triangles where lateral sides of each of them form tilted blade whose every horizontal section has hollow airfoil oriented along tangent to circle circumscribed by center of this airfoil when unit is running. Bases of triangles are disposed horizontally so that they are slightly elevated from ground and are interconnected. Planes of triangles are arranged so that triangle vertices are joined together by means of cross-members to form regular horizontal polygon. Pyramid formed by tilted blades and horizontal cross-members is mounted with its bottom part on flat steel ring through electricity conducting strap, this ring functioning as rotor of linear (arc) generator whose inductors are elastically secured together with vertical load relief electromagnets and vertical supports on several posts over perimeter of steel ring. Inductors are provided with cooling fans conveying hot air toward steel ring that also mounts, apart from blades, movable-shutters shroud used to receive hot air from fan and to pass it to inner spaces of blades. Vortices of bottom polygon are connected like bicycle wheel spiders to central bearing fitted onto short supporting shaft taking horizontal thrusts.

EFFECT: enhanced reliability and operating effectiveness of unit under severe climatic conditions.

4 cl, 6 dwg

Description

The invention relates to wind energy, namely to rotary orthogonal power units, and can be used to obtain energy from air flows, in particular, in harsh climatic conditions.

Known helicoid turbines with a vertical axis of rotation and blades curved along a helical line (US patent No. 5451137).

The disadvantage of this solution is the presence of a central shaft and a traverse connecting the blades to the shaft, which prevents a significant increase in the dimensions of the unit and its unit power, and also creates favorable conditions for icing up of plant parts and failure in operation in areas with harsh climates.

Closest to this invention is a self-supporting wind turbine with blades curved along intersecting helical lines forming a cylindrical truss of bent elements, resting on cantilever traverses mounted on the axis of a low-speed generator (USSR Author's Certificate No. 1150395).

The disadvantage of this technical solution is the complexity of the design, which presents difficulties in the manufacture and installation, a large load on the support beam and the shaft of the generator.

The technical result of the invention is to increase reliability, especially in harsh climatic conditions, as well as a certain simplification of the design.

The technical result is achieved in that a wind turbine with a vertical axis of rotation, containing blades fixed on the base, a beam, a generator, contains an assembly of at least three flat elements in the form of isosceles triangles, the sides of each of which form an inclined blade, and the plane itself the triangle is slightly deviated from the vertical outward so that the vertices of the triangles are interconnected by traverses forming a horizontal regular polygon, each horizontal echenie wind turbine blade includes a hollow airfoil oriented outwardly from the tangent to the circle described by the center of this profile, the bases of the triangles are arranged horizontally at a small height from the ground and are interconnected. In addition, in the wind power installation, the pyramid formed by inclined blades and horizontal traverses is fixed in the lower part on the rotor of a linear (arc) generator made in the form of a flat steel ring with an electrically conductive pad, the inductors of which together with the vertical discharge electromagnets and vertical supports are elastically fixed to several racks around the perimeter of the steel ring.

In addition, in the wind power installation, the inductors are equipped with blowing fans with a blowing direction in the direction of the steel ring, on which a casing with movable shutters is additionally fixed.

The technical result is also achieved by the fact that the vertices of the lower polygon are connected to a central bearing mounted on a short support shaft.

Thanks to these improvements, the installation acquires increased resistance to strong winds and icing with a relatively simple design while maintaining high efficiency in operation.

Figure 1 shows a wind power installation, General view; figure 2 is a view II of figure 1, figure 3 is a view of II-II of figure 1, figure 4 is a view of III-III of figure 1, figure 5 wind power plant with blades and traverses, the General view, Fig.6 is a reference unit of the installation.

A wind turbine with a vertical axis of rotation consists of three or more vertical elements in the form of isosceles triangles 1, the sides of each of which form an inclined blade, each horizontal section of which has a hollow aerodynamic profile oriented along the tangent to the circle described by the center of this profile. The base of the triangles 1 are located horizontally at a small height from the ground and are interconnected. The planes of triangles 1 are located so that their vertices are interconnected by traverses 2, forming a horizontal regular polygon (figure 1 is a triangle). The pyramid formed by the inclined blades of triangles 1 and horizontal traverses, in the lower part is mounted on the rotor 3 of the linear (arc) generator in the form of a flat steel ring with an electrically conductive pad, inductors 4 (figure 2) of which together with electromagnets of vertical discharge 5 and vertical supports 6 are resiliently mounted on several posts 7 around the perimeter of the steel ring 3. The inductors 4 are equipped with blowers 8 with a direction of blowing warm air in the direction of the steel ring 3, on which additionally lightweight casing 9 with movable louvres 10 receiving warm air from fans 8 and directing it into the internal cavities of the blades 11 of the triangles 3 is replicated. The end sections of the blades in the upper part are equipped with deflectors (not shown) that create aerodynamic traction, which facilitates the movement of warm air through the internal channels blades 11 from the bottom up.

The vertices of the lower polygon according to the scheme of the spokes of the bicycle wheel are connected to the central bearing 12 (Fig. 1), mounted on a short support shaft 13, which receives horizontal force.

Installation works as follows.

At a low wind speed, the electromagnets 5 for unloading the supports 6 are turned on, and the parking brake is released. Under the influence of wind, the installation starts to rotate, and when the rotation speed reaches a certain value, the inductors 4 of the linear generator are connected to the electric network. The heat generated in the inductors is directed by the fans 8 through the blinds 10 and the duct 9 into the blades 11, freeing them from freezing snow and ice. The improving aerodynamic quality of the blades 11 provides a further promotion of the blades and an increase in the power supplied by the inductors 4 to the electric network.

Claims (4)

1. Wind turbine with a vertical axis of rotation, containing hollow blades of aerodynamic profile, mounted on the base, traverses, generators, characterized in that it contains an assembly of at least three flat elements in the form of isosceles triangles, the sides of each of which form an inclined a blade, each horizontal section of which has a hollow aerodynamic profile oriented along the tangent to the circle described by the center of this profile, the base of the triangles is located us horizontally at a small height from the ground and are interconnected plane triangles are arranged so that the vertices of the triangles are interconnected by cross members forming a horizontal regular polygon. 2. The wind power installation according to claim 1, characterized in that the pyramid formed by inclined blades and horizontal traverses, in the lower part, is mounted on the rotor of a linear (arc) generator in the form of a flat steel ring with an electrically conductive pad, the inductors of which together with the vertical discharge electromagnets and vertical supports are elastically mounted on several racks around the perimeter of the steel ring. 3. Wind power installation according to claim 1 or 2, characterized in that the inductors are equipped with blow fans with a blow direction in the direction of the steel ring, on which a casing with movable shutters is additionally fixed. 4. Wind power installation according to claim 1, or 2, or 3, characterized in that the vertices of the lower polygon are connected to a central bearing mounted on a short support shaft.

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