Rotary wind-driven electric power station

FIELD: power industry.

SUBSTANCE: wind-driven electric power station includes rotor made in the form of disc with blades installed on it, made in the form of aerodynamic wings and located with a gap relative to rotor shaft which is mechanically connected to shaft of electric generator, fairing installed on shaft in front of rotor in direction of air flow and enveloping the gap between inner edges of blades and confusor arranged in front of rotor in flow direction. Blade edges are chamfered in the direction of shaft axis. Confusor is installed on peripheral parts of blade edges so that a gap with fairing is formed.

EFFECT: improved completeness of use of wind flow energy and simpler construction of rotary wind-driven electric power station.

3 cl, 3 dwg

 

The invention relates to energy, in particular to the construction of wind power plants, in which the axis of rotation of the rotors may have a different position relative to the coordinate axes, but always in alignment with the direction of air flow that can be used to generate electricity by converting the energy of the air flow, remove the ventilation plants from different areas (metro, factory shop and others), as well as wind power plants with output in both the private and into the public grid.

Known wind turbine with a rotor with curved blades, the guide device can be rotated relative to the rotor and is made in the form of two groups of blades, each of which the length of the blades increases in the direction of rotation of the rotor, and a vane located in a plane passing between the groups of blades (see SU 985402 A, IPC F03D 3/00, 30.12.1982).

In known wind turbine part of the air flow directly affects the curved surface of the rotor blade, and the other part of the flow is captured guide vanes and through its blades is directed to the blades of the rotor, which provides better utilization of wind.

The disadvantages of the known devices include the inability of his work be the vane, which complicates the design and increases its inertia.

Complicates the design of the known device and the need for installation of blades of different lengths, and the leakage flow almost at right angles to the surface of the blades leads to their shock and, as a consequence, the occurrence of reverse flow.

In addition, the rotor blades along the entire length made flat, i.e. without taking into account aerodynamics.

Known wind turbine, the turbine of which is formed near profiled axisymmetric blades and is located inside the guide system formed by several established stationary guides shutters, each of the turbine blades is part of a lateral surface of the cylinder, the cross section of each of the wings has a profile in the form of a sine wave, the edges of the blades are oriented so as to provide a smooth flow of air from the rails of the valves on the turbine blades (see EN 2168059 C2, IPC F03D 3/04, 27.05.2001).

Known wind turbine can operate without a wind vane, which increases its maneuverability and makes it easy to manufacture.

However, the completeness of the use of wind energy in this device is insufficient, which is one of its main disadvantages.

Closest to the technical essence of the present invention the rotor is wind power plant, containing the rotor is made in the form of a disk with installed blades, made in the form of aerodynamic wings and arranged with a gap relative to the rotor shaft which is mechanically connected to the shaft of the generator, deflecting the air flow deflector mounted on the shaft in front of the rotor air stream and covering the gap between the inner edges of the blades, and the confuser, on the front of the fairing on the stream and output it covers. Installation on the wind is a weather vane, which rotary wind power plant may be further provided, and the vane is installed on the generator. In addition, rotary wind power plant may be further provided with guide vanes with vanes (see EN 2270359 C1 IPC F03D 1/04, 20.02.2006).

However, the design is known wind power plants are quite complex and therefore unreliable at high wind speeds. In addition, provide a known wind power plant scheme of movement of the air flow inside it increases the efficiency of wind energy, but not fully.

The present invention is to increase the fullness of the energy of the wind flow by inhibiting its about the blades and disk, as well as simplifying the design of the rotor of a wind power plant and its operation./p>

The problem is solved in that the rotor of a wind farm, containing the rotor is made in the form of a disk with installed blades, made in the form of aerodynamic wings and arranged with a gap relative to the rotor shaft which is mechanically connected to the shaft of the generator, fairing mounted on the shaft in front of the rotor air stream and covering the gap between the inner edges of the blades, and the confuser, placed in front of the rotor flux, according to the invention the ends of the blades are made oblique to the shaft axis, and the confuser is installed on the peripheral parts of the ends of the blades with the formation of the gap with the fairing.

The problem is solved also by the fact that the ends of the blades oblique to the shaft axis at an angle amounting to 15-20 degrees, the cross-sectional area of the fairing is 25%-35% of the area of the disk, and the projected area of the confuser to disk is 35%-45% of the area of the disk.

The problem is solved also by the fact that the wind power plant can be equipped with a weather vane mounted on the generator.

Figure 1 presents the proposed wind power plant rotor with a horizontal axis rotor.

Figure 2 is a view of a figure 1.

Figure 3 is a variant of the proposed rotor of a wind power plant with vertically located by the axis of the rotor.

The proposed ro is ornago wind power plant (figure 1) includes a rotor 1, made in the form of disc 2 are installed on the blades 3 arranged with a clearance relative to the shaft 4 of the rotor 1 which is mechanically connected through the sleeve 5 with the shaft of the electric generator 6. The blades 3 of the rotor 1 is made in the form of aerodynamic wings, facing in the direction of the axis of the shaft 4. Wind power plant (figure 2) also includes deflecting the air flow fairing 7, mounted on the shaft 4 in front of the rotor 1 by the air stream and covering the gap between the inner edges of the blades 3, and the confuser 8 placed in front of the rotor 1 on the thread. The ends of the blades 3 are oblique to the axis of the shaft 4. The confuser 8 is installed on the peripheral parts of the ends of the blades 3 with the formation of the gap with the fairing 7. The ends of the blades 3 is oblique to the axis of the shaft 4 at an angle amounting to 15-20 degrees. The cross-sectional area of the fairing 7 is 25%-35% of the area of disc 2. The projected area confuser 8 on disc 2 is 35%-45% of the area of disc 2. Such geometrical ratios obtained experimentally. Angle from 15 to 20 degrees due to the fact that 15 degrees provide a sufficient concentration of wind flow (speed), increasing more than 20 degrees will impact positively on the increase in the rate of flow of the wind, but you will need an unjustified increase in the height of the blades 3. The decrease in the covered area of the disk 2, the fairing 7 less than 25%, reduces energy is the energy efficiency of the wind flow and complicates the design of the rotor 1, and the increase of more than 35% reduces the working surface of the disk 2, and also reduces the speed of rotation of the rotor 1. Shelter confuser 8 along the flow of the wind disc 2 less than 35% will lead to a sharp reduction in the rate of rotation of the rotor 1, and the increase in shelter more than 45% of the area of disc 2 will reduce the required gap between the confuser 8 and fairing 7 and also will reduce the speed of rotation of the rotor 1. Installation on the wind is a weather vane 9, which rotary wind power plant can be supplied with a weather vane 9 is installed on the generator 6. Wind power plant installed on the support 10 with the connecting rotary device 11 for adjusting the wind. The output load of the electric generator 6 is made through the Converter (conventionally not shown) and the controller 12 is electrically connected with the switchboard 13. In addition, the generator 6 is connected to the battery 14.

The work described wind power is as follows.

The wind flow is simultaneously supplied to the deflector 7 and the confuser 8, there is accelerated and with great speed gets to all of the blades 3 of the rotor 1. Giving a part of their kinetic energy at once all the blades 3, the air flow gets to the disk 2 of the rotor 1, which is its inhibition of the blades 3 and the disk 2, changes its direction by 90 degrees, and then leaves the volume of the m rotor 1 through the widening hole, formed adjacent blades 3 and the inner surface of the confuser 8. Work all of the blades 3, and the presence of the fairing 7 and built confuser 8, creating a wall of the rotating flow, will increase the fullness of the energy of the wind flow. The speed of rotation of the rotor 1 can reach several thousand revolutions per minute, that will allow to refuse from the use of reducers.

In the embodiment, in the case of the fixed installation of the wind farm (figure 3) in the bracket 15, for example, over the ventilation shaft 16 (the axis of the shaft 4 vertical) air flow is also simultaneously supplied to the deflector 7 and the confuser 8 and there is accelerated and with great speed gets to all of the blades 3 of the rotor 1. Giving a part of their kinetic energy at once all the blades 3, gets on disc 2 of the rotor 1. In the presence of natural horizontal flow of the wind he could simultaneously affect on the blade 3, regardless of wind direction.

The rotor 1, in turn, can be used instead of the propeller rotor, so as not to generate sounds of different frequencies. He has a greater utilization of wind flow energy, not hazardous to flying birds, etc.

Thus, the use of the proposed wind power station with built-in confuser 8, which provides shelter part of the disk 2 with the lop is due 3, and Radome 7 will improve the completeness of the energy of the wind flow, and also to simplify the design of a rotor of a wind power plant and its operation.

1. Rotary wind farm containing the rotor is made in the form of a disk with installed blades, made in the form of aerodynamic wings and arranged with a gap relative to the rotor shaft which is mechanically connected to the shaft of the generator, fairing mounted on the shaft in front of the rotor air stream and covering the gap between the inner edges of the blades, and the confuser, placed in front of the rotor flux, characterized in that the ends of the blades are made oblique to the shaft axis, and the confuser is installed on the peripheral parts of the ends of the blades with the formation of the gap with the fairing.

2. Rotary wind power plant according to claim 1, characterized in that the ends of the blades oblique to the shaft axis at an angle amounting to 15-20°, the cross-sectional area of the fairing is 25-35% of the area of the disk, and the projected area of the confuser to disk is 35-45% of the area of the disk.

3. Rotary wind power plant according to claim 1 or 2, characterized in that it is equipped with a vane mounted on the generator.



 

Same patents:

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3 cl, 1 dwg

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