RU82782U1 - WIND MOTOR INSTALLATION - Google Patents

Abstract

A wind-driven power plant containing a rotor fixed on an axis, on the rim-disk of which blades of the same twist are placed along the periphery on their axes with the possibility of turning them inward and outward of the rotor, and each rotor blade has a lever connected to a spring tensioner, characterized in that an additional an inner rotor with blades of opposite twist and limiters of the maximum angle of rotation of the blades, and the axes of both rotors are coaxially combined by means of bearings and are separately connected to an actuator, for example, a stator and a rotor of an electric generator.

Description

The proposed utility model relates to wind turbines and can be used to obtain mechanical or electrical energy from the flow of a moving medium: wind or water.

Known designs with fixed blades [1, 2, 3, 4] have a low utilization of flow energy.

There are also known designs with moving blades, in which the blades moving towards the flow are rotated to reduce their aerodynamic drag [5, 6, 7, 8]. In devices of this kind, only a blade going under the wind is involved in the transfer of flow energy, and the remaining blades moving across or towards the wind flow only slow down the wind turbine, which also causes their low coefficient of utilization of flow energy.

Also known is the design [9] of the rotor having movable blades deflecting inward and outward of the rotor, the wind or water flow passing through the rotor. However, this design has a complex pattern of tensioning the blades, their adjustment and installation in the initial position.

The closest in technical essence (prototype) is the device "Wind turbine" [10], containing a shaft connected to rim-disks, between which the blades are placed on their axes with the possibility of rotation either inward or outward of the blade. The lever of each blade has a spring tensioner, which, in the absence of flow, sets the blades to their original state, while the rotor turns into the geometric shape of a barrel-polyhedron.

This device also does not have a high coefficient of utilization of flow energy and a limited range of control of rotor speeds, due to the incomplete use of energy of the flow.

This is explained by the fact that not all of the flow passes rectilinearly through the rotor, since part of the flow in the direction of its movement deviates to the side of the rectilinear motion and therefore exerts pressure on the blades with less effort. When the blades are twisted in the figures [9, 10], the flow will deviate to the left of the rectilinear motion vector.

In addition, the design of the prototype has a low rotation speed, which suggests the presence of an additional multiplier for connecting a high-speed actuator, for example, a generator.

Technical advantages of the claimed object in comparison with known devices are as follows:

- in order to increase the energy efficiency of the flow and increase the power of the installation, an additional internal rotor with vanes of the opposite twist was introduced, and to prevent the intersection of the blades of the adjacent rotors and to reduce the size, limiters were introduced for the maximum angle of rotation of the blades;

- in order to increase the speed at the output of the installation, the axes of both rotors are coaxially combined by bearings and separately connected to the actuator, for example, to the rotor and stator of the electric generator.

This allows you to increase the utilization of the flow energy, double the speed at the output of the device and, in some cases, refuse to use multipliers that increase the speed for actuators: generators, pumps, etc.

Figure 1 shows the operation diagram of the "Wind turbine installation", and figure 2 is an embodiment of the design of this device.

"Wind turbine installation" contains a main rotor, consisting of a central hollow inside the axis 1, on which a disk 2 with rotary blades 4 located on its axles 3 is mounted. Each blade has its own rotary lever 5 through a flexible rod 6 connected to a spring tensioner 7. In the device additionally, an internal rotor is introduced, consisting of a central axis 8, on which a smaller rim-disk 9 is fixed with rotary blades 11 located on its axes 10. Each additional rotor blade has an opposite circle tku (opposite rotation axis: clockwise and counterclockwise for unidirectional flow), as well as a similar tension pattern. The axes of both rotors are coaxially joined by bearings 12. The axis 8 of the additional rotor is connected, for example, to the rotor 13 of the electric generator, and the axis 1 of the main rotor is connected to the stator 14 of the generator. The whole structure by means of bearing assemblies 15 is mounted on a foundation base 16. The limiters 17 of the maximum angle of rotation of the blades prevent the intersection of adjacent rotor blades. To increase the rigidity of the entire structure, additional stiffening rings can be installed on the axis of the blades of the outer rotor from above and on the axis of the blades of the inner rotor (not shown in FIG. 2).

"Wind turbine installation" works as follows. In the absence of a flow of “V” wind or water, the tensioners set the blades of both cylinders to a neutral position (Fig. 1), while both rotors acquire a barrel-shaped geometric shape of polygons according to the number of blades used. If there is a flow of wind or water entering the rotors, their blades deviate into the inside of the rotors, and after the flow passes through the rotors, the blades deviate outside of the rotors: in Fig. 1, the deflection of the blades is indicated by a dotted line.

Thus, each blade of both rotors is involved in the selection of energy from the flow twice: one side of the blade "works" for the incoming stream, and the other side of the same blade for the outgoing stream. Since the rotor blades have the opposite twist: the opposite axis of rotation, then with the flow direction “V” shown in FIG. 1, the outer rotor will rotate clockwise and the inner rotor counterclockwise.

The axis 1 of the outer rotor (FIG. 2) will rotate the stator 14 of the electric generator in one direction, and the axis 8 of the inner rotor will rotate the rotor (armature) 13 of the same generator in the opposite direction (see arrows). Thus, counter-rotational rotation and doubling of the generator speed are provided. The rotation axes 1 and 8 are combined through the bearing units 12, and the entire structure of the "Wind turbine installation" is fixed on the foundation base 16 through the bearing units 15.

In the event of instability, for example, of a wind flow that changes its direction of movement, chaotic movements of the blades can occur, and the blades of different closely spaced rotors will cling to each other. To prevent this from happening and so that the rotors are compactly mounted as close as possible to each other, limiters 17 for the maximum angle of rotation of the blades, made in the form of protrusions-pins, are installed.

A significant difference of the proposed solution from the known ones consists in both increasing the utilization of the flow energy and increasing the power of the installation, and doubling the speed due to the counter-rotational rotation of both rotors, which eliminates the multiplier when it is connected to a high-speed actuator.

Tests of the laboratory layout confirmed the claimed benefits.

The proposed "Wind turbine installation" is quite simple to manufacture, does not require scarce materials and special services.

We should expect its widespread use for driving electric generators, pumps, etc. at facilities deprived of centralized power supply.

Sources of information taken into account when compiling

applications:

1. Kazhinsky B.V. Slow-flow hydroelectric power plants of low power / Ed. Berga, issue 57, Moscow: 1950, p.31 "Rotary turbine of the B.V. Kazhinsky system."

2. Ibid., P.33 “Rotor turbine of the Ugrinsky system”.

3. Description of the invention to the patent of the Russian Federation No. 2118703, IPC F03D 3/00, “Rotary wind turbine” (analogue).

4. Description of the invention to the patent of the Russian Federation No. 2246634, IPC F03D 3/00, “Rotor” (analogue).

5. Description of the invention to the patent of the Russian Federation No. 2057969, IPC F03D 3/00, “Carousel wind wheel” (analogue).

6. Description of the invention to the patent of the Russian Federation No. 2069795, IPC F03D 3/06, Windwheel (analogue).

7. Description of the invention to the USSR author's certificate No. 1017814, IPC F03D 3/00, “Carousel wind wheel” (analogue).

8. Description of the invention to the USSR author's certificate No. 1663226, IPC F03D 3/06, "Wind wheel" (analogue).

9. Description of the patent of the Russian Federation No. 34653, IPC F03D V3 / 12, “Dolphin Tail Rotor” (analogue). Y. Description of RF patent No. 55884, IPC F03D B3 / 12, “Wind turbine (prototype).

Claims (1)

A wind turbine installation comprising a rotor fixed on the axis, on the rim of the disk of which blades of the same twist are arranged on the periphery on their axes with the possibility of their turning in and out of the rotor, each rotor blade having a lever connected to a spring tensioner, characterized in that an additional an inner rotor with vanes of the opposite twist and limiters of the maximum angle of rotation of the vanes, the axes of both rotors being coaxially joined by bearings and separately connected to an actuator, for example, a stator and a rotor of an electric generator.