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INVENTION
Russian Federation Patent RU2062352
wind turbines
Name of the inventor: Balzannikov MI
The name of the patentee: Samara Architecture and Construction Institute
Address for correspondence:
Starting date of the patent: 1993.02.02
Usage: wind energy, in particular in the construction of wind turbines, provided with an air flow concentrators. The inventive wind turbine comprises a wind wheel 1 with blades 2, the generator 5, the support structure 6, 8 and 11, pivotable about a vertical axis, and a hub stream that is placed on the support structure 11 of the wind wheel 1 and configured to consist of two elements: confuser inlet fairing 12 is rigidly attached to one side of the support structure 11 and the elastic flexible sheath 13, fixed to the front edge of the support structure 11 and is provided with weather vanes 15 and blade 14 with the foil profile. Pinwheels 15 are in the form of vertical plates attached to the lower side of the elastic shell 13 near its trailing edge and the upper side - to the wind turbine blades 14 will create a vacuum for an additional wind wheel and hence increase the air flow rate and the utilization of wind energy.
DESCRIPTION OF THE INVENTION
The invention relates to wind power engineering, in particular wind turbine units, concentrators equipped with an air stream.
Known wind turbine comprising a wind wheel and a generator with the blades mounted on a support structure rotatable about a vertical axis wind orientation [1] The blades are made of this design with variable-pitch and allow to maintain constant rotational speed propeller.
The disadvantage of the known design is the reduced power generation due to low coefficient of wind energy due to a lack of air flow concentrator.
The closest to the proposed technical solution is a wind turbine comprising a bladed wind wheel, placed on the supporting pillars, which are rotatably mounted about a vertical axis, the generator and hub airflow made of two parts: the confusor and the diffuser [2] In operation of the wind turbine airflow accelerated in confusor hub and thereby increasing the utilization of wind energy and the value of electricity generation.
The disadvantage of this design is its large material consumption due to large consumption of metal for the hub device, and under-utilization of wind flow energy.
The purpose of the invention, reduction of the material and increase the coefficient of wind turbine wind energy.
The positive effect of the use of the invention is to provide additional vacuum for wind wheel, which will increase the air velocity and wind energy utilization ratio. This in turn will increase the power and electricity generation. In addition, the use as a flux concentrator surfaces ground surface and a flexible elastic material for the other lead to a substantial reduction in its cost and consumption of materials. In addition, the elastic sheath will protect the elements of the wind turbine and electrical equipment from the effects of adverse weather conditions, which will increase the reliability of the wind turbine and its longevity.
The purpose of the invention is achieved by the wind turbine, comprising a bladed wind wheel, placed on the supporting pillars, which are rotatably mounted about a vertical axis, the generator and the hub of the air flow, made of two parts: a convergent placed before the wind wheel and a diffuser for wind turbines, equipped with weather vanes in and a vertical wing-profile plates fixed to the ends of the vanes, and the air flow concentrator is a visor arranged above the wind wheel and resting on support legs, and pinwheels are mounted on the outer surface of the diffuser part made of a flexible material.
To enable termination of exposure to the wind and stopping the wind wheel windmill and it is provided with drive rods, one end of each of which is attached to the trailing edge part of the diffuser, and the other to the actuator.
For controlling the degree of influence of wind on the wind turbine a wing profile is pivotally mounted about a horizontal axis.
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FIG. 1 schematically shows a wind turbine with a horizontal axis transverse incision; FIG. 2 A sectional view and FIG. 1; FIG. Scheme 3 windmill with vertical axis. Wind turbine includes bladed wind wheel 1 with blades 2 mounted on girders 3, axle 4, generator 5 is placed on a supporting structure consisting of a rack 6 mounted on hinge 7 rotatable about a vertical axis, the rack 8 resting by the roller 5 on the guide 10 and 11. The crossbar 11 is placed on a crossbeam airflow hub made of two parts: a confusor 12 placed before vetrekolesom and presenting a rigid structure with smoothly contoured surface and a diffuser 13 disposed over the wind turbines and made of a flexible material. Wind turbine is provided with wing-profile 14 and 15 weathervanes, made in the form of vertical plates, wherein the profile 14 is fixed to the ends of vanes 15. Thus, the air flow is performed in a hub hood located above the wind wheel 1 and resting on the support posts 6 and 8 and pinwheels 15 mounted on the outer surface of the diffuser portion 13. |
it is provided with rods 16 and the actuator 17, the rod 16 with one end attached to the trailing edge of the diffuser portion 13 and the other to the actuator 17 to enable termination of exposure to the wind and stopping the wind turbine wind wheel.
For controlling the degree of influence of wind on the wind turbine wing-profile 14 is pivotally mounted about a horizontal axis.
Wind turbine may be configured as a horizontal axis (Figs. 1 and 2) and vertical (Fig. 3) and a wing profile as a solid (Figs. 1 and 2) and of the individual sections (Fig. 3).
The device operates as follows. When the wind weathercocks 15 unfurl wind wheel 1 in the wind, and a wing profile 14 by appearing on it lift raises a flexible diffuser portion 13 of the air flow in a hub position.
If the wind turbine has a vertical axis (FIG. 3), the wind turns the beam 11 only with a hub airflow.
Thus, the wind wheel 1 is formed between the flexible portion of the diffuser part of the diffuser 13 and the ground. The airflow approaching the wind wheel 1 is accelerated in the confusor hub portion 12, then enters the footprint on the wind wheel 1, and then enters the diffuser portion 13 of the hub. The presence of the diffuser portion 13 leads to discharge of the wind wheel 1, and hence further increase the air flow rate in zone one propeller.
A wing profile 14 is attached to the vane 15 so that when the estimated wind speed to lift it occurred, providing an optimal angle for wind wheel diffuser 1. The increase of wind speed above rated value will lead to lifting end portion of the flexible portion of the diffuser 13 that causes a reduction in angle of attack profile 14 and consequently the lift. As a result, the flexible end portion of the diffuser portion 13 falls again in the optimum position. This provides an automatic regulation of the hub. Also, additional control profile attack angle of the diffuser 14 and air flow profile of the hub by turning about a horizontal axis can be performed if necessary. the actuator 17 is activated to stop the propeller 1 or protect it from hurricane winds, which by means of rods 16 to force down the end portion of the flexible portion 13 of the diffuser hub to the earth's surface and thus closes the air flow through the wind wheel 1.
Thus, the presence of the diffuser of the air flux concentrator would substantially increase the utilization of wind flow and hence power wind turbine and making it electricity, and the execution of the diffuser part of a flexible material and used as one of the working surfaces of the earth's surface of the hub provides a significant reduction of the material and the cost of the wind turbine.
In addition, the use of a diffuser portion of the hub will provide automatic adjustment of operation and protection of the propeller elements from the effects of precipitation, which, in turn, will increase the reliability of the wind turbine and reduce the costs of repair.
CLAIM
1. The wind turbine comprising a bladed wind wheel, placed on the supporting pillars, which are rotatably mounted about a vertical axis, and the generator hub airflow made of two parts, one of which is placed before the confusor wind wheel, diffuser placed behind the other wind wheel, wherein that the wind turbine is provided with a weather vanes in the form of vertical plates and vane with wing-shaped profile, fixed to the ends of the vanes, and the air flow concentrator is designed as a hood disposed above the wind wheel and resting on support legs, and pinwheels are mounted on the outer surface of the diffuser part made of a flexible material.
2. The wind turbine according to claim 1, characterized in that it is provided with a drive and the rods, each of which is attached to one end of the trailing edge part of the diffuser, and the other to the actuator.
3. The wind turbine of claim 1 or 2, characterized in that the blade with the wing-profile is pivotally mounted about a horizontal axis.
print version
Publication date 19.03.2007gg
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