Wind wheel

 

(57) Abstract:

The use of wind energy, in particular wind-powered engines. The inventive wheel contains at least one tape blade made of elastic material and bent in the form of a loop attached branches on the shaft. The wind wheel is equipped with an adjustable cargo streamlined shape, which is installed on the blade eccentric relative to the longitudinal axis of symmetry of the tape at a distance equidistant from the fixing branches. At least one of the branches attached to the shaft with a longitudinal twist. 3 Il.

The invention relates to wind energy and can be used in wind turbines.

Known wheel containing a flexible elastic blade, and at the end of each fixed blade centrifugal load [1]

This wheel has a simple design, but at high wind speeds observed high-amplitude deflections of the cantilever blades, reducing the strength of the latter.

It is also known wheel containing a shaft and a fixed blade having the shape of the surface of Mobius. The blade is made of elastic material and attached to the shaft by means of a rod [2But only in the plane of rotation. In this regard, the strength of the wind turbine is limited, wind wheel also has no speed regulators, making difficult its use.

You know, finally adopted for the prototype, wind wheel, containing at least one tape blade made of elastic material and bent in the form of a loop attached branches on the shaft [3]

The disadvantage of the prototype is the complexity of the design, the curved arms, which increases the manufacturing of wind turbine, as well as the lack of speed regulators.

In the invention the task is to eliminate the disadvantages of the prototype and execute the design of wind turbine simpler to increase its stiffness and strength, to regulate speed.

In common with the prototype are the following essential features: tape the blade of elastic material, securing the blades branches on the shaft.

Unlike the prototype of the invention has the following characteristics: wind wheel has a regulating load a streamlined shape, the load is installed on the blade eccentric relative to the longitudinal axis of symmetry of the tape at a distance equidistant from the fixing branches, at least one of the branches of laesa in the plane of the axis of rotation; in Fig. 2 -4 views of the wind wheel in the direction of the wind; Fig. 3 a top view in Fig. 1.

Wind wheel contains at least one tape blade made of elastic material and bent in the form of a loop 1, attached branches 2 and 3 on the shaft 4. The wind wheel is equipped with an adjusting load 5 a streamlined shape, mounted on the blades of the eccentric relative to the longitudinal axis of symmetry 6 of the tape at a distance equidistant from the consolidation of branches 2 and 3, and at least one of the branches 2 or 3 mounted on the shaft 4 and the longitudinal spin. In addition, each branch 2 and 3 are rigidly connected with the shaft 4 by means of the flat holders 7.

Wheel works as follows.

When working wind speed V on the wind turbine occurs momentum due to the installation of the tape due to its longitudinal twist at an angle to the flow, the wheel starts to rotate with frequency (Fig. 2).

With increasing wind speed is estimated to increase the speed of the wind wheel and the centrifugal force of the load 5. On the shoulder of eccentricity appears the moment of centrifugal force. The latest twists peripheral part of the hinge 1, creating it the angles set to the stream. Thereby deteriorating the aerodynamics of the wind is a COP, tape due to its elasticity returns to its original position and rate limits rotation does not occur.

Wind wheel kinematically connected to an electric generator or a working machine (not shown) that converts the energy of wind turbine into useful work.

Wind wheel has a simple and robust design, hard enough in the direction of flow, and its energy efficiency is confirmed by the test sample in a wind tunnel.

Wind WHEEL, containing at least one tape blade made of elastic material and bent in the form of a loop attached branches on the shaft, characterized in that the wind wheel is equipped with an adjustable cargo streamlined shape, mounted on the blades of the eccentric relative to the longitudinal axis of symmetry of the tape at a distance equidistant from the fixing branches, and at least one of the branches attached to the shaft with a longitudinal twist.

 

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FIELD: wind-power engineering; off-line windmill-electric generating plants or those operating in parallel with power mains.

SUBSTANCE: proposed plant has induction-type generator, transmission, and windmill, all mounted on endless flexible members thrown over cylinders and having axes of revolution coupled with base. Blade is made in the form of gable roof incorporating couple rafters in the form of dead-end towers. Axis-to-axis distances of cylinders equal 2.5 to 5.5 of their clearance radii. Clearance diameter of cylinders is greater than dead-end tower pitch and is comparable with its height. Flexible members are tensioned with aid of movable supports whose pedestal is disposed between supports and base; pedestals proper are rigidly fixed to beam. Optimal blade number of windmill-electric generating plant is four.

EFFECT: simplified design, reduced cost, enhanced reliability of plant.

1 cl, 2 dwg

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