Aero power plant

FIELD: power engineering.

SUBSTANCE: aero power plant for usage of wind energy comprises a horizontal air duct, a vertical air duct and electric generators, which are kinematically connected with frames, serially installed in planes of cross section of air ducts with the possibility of reciprocal motion limited with elastic supports. Frames are equipped with airfoil plans, besides, in the first frame from the air duct inlet the plans are installed as capable of synchronous rotation limited by supports relative to longitudinal axes of the air duct on longitudinal axes arranged in the plane of the frame, in the second frame the plans are fixed relative to the frame.

EFFECT: invention makes it possible to provide for any required capacity of a power plant.

 

The present invention relates to devices designed to generate electricity using wind energy.

There are various types of power plants, called "wind farms" and uses wind energy to generate electrical energy. The disadvantages of such devices are relatively low productivity, relatively low efficiency, and depending on the wind parameters. Wind power plants with a horizontal axis of rotation of the wind wheel, depending on wind direction and having a large specific capacity and a simpler construction than not dependent on wind direction Wind with a vertical axis of rotation of the wind wheel, was more widespread.

The famous "Wind power plant" (Patent RU 2246031 IPC F03D 1/04)which suggests increasing capacity and improving efficiency of Wind power plants with a horizontal axis of rotation of the wind wheel by placing a wind wheel and kinematically connected to a generator in the air duct, consisting of several horizontal differently oriented relative to the cardinal points of the ducts connected with a vertically arranged air duct. It is assumed that due to the different orientation relative to each other g the horizontal ducts wind wheel will abbatissa air flow regardless of the direction of the wind, but due to some other structural measures the flow velocity will be increased, which will increase capacity and improve efficiency.

The efficiency of this "wind farm" may indeed be higher than those located in the open space of the Wind power plant of a traditional design with a horizontal axis of rotation, because it can work regardless of wind direction. However, the capacity of this wind farm can be higher power openly positioned wind of the same sizes only if around the propeller of free space with a radius of not less than four diameters of the wheels. Otherwise, coming from the ends of the propeller blades, the air flow induced by the difference in linear velocities of the blade along its scope, reflected from surrounding obstacles, is superimposed on the main thread, whirls him and thereby dramatically reduces the efficiency of the wheel. To avoid this, the walls of the duct must be from the wheels is not less than such distance. This will increase power, but will lead to unimaginable growth of the diameter of the duct, therefore, increase the cost of a kilowatt of installed capacity that is unlikely to justify a higher power. The increase in power due to the proposed patent 2246031 measures to increase near the amount of flow in ducts can result in again provided a large diameter duct So as the efficiency of such a "wind farm" is questionable. Possible option to increase its capacity by installation of several windwheels sequentially also will not give a positive result due to the fact that the blades of one propeller comes turbulent air flow, blowing which subsequent wheel is not effective due to induced turbulence the fall of the lifting force of his blades. For these reasons, wind traditional structures are located at a considerable distance from each other and from the earth's surface.. Therefore, the capacity of the wind power plant Pat. 2246031 may be greater than the capacity of a wind power plant with a wind turbine of the same size, located in the open space, only in a much worse economic indicators due to the high cost of large diameter ducts.

Wind power plant according to U.S. Pat. 2246031 may, according to its author, to work only when there is wind. However, deeper analysis shows that the system consisting of a horizontal duct, connected to a vertical duct sufficient height and placed in one of the ducts of the wind turbine with a generator that can produce electricity and in complete calm, using air on the OK in the ducts, which may be caused by the difference in air temperatures, the difference between the barometric pressure at the inlet and outlet of the duct, the height difference of the input and output (see SCI Kirilin "Ventilation of mine workings and underground structures during their construction and operation", M, 1971, p.44 section "Natural ventilation in tunnels"). In windy weather, as it follows from the above source and from the description of the prototype, and when blowing air ducts by the wind. All these can occur separately or concurrently. Therefore, the power such a device will be produced around the clock, regardless of weather conditions.

Although, as shown above, the capacity of this wind farm at an acceptable size of the cross section of the duct and with the conventional propeller is not high. Wind power plant according to U.S. Pat. No. 2246031 can be adopted for the prototype.

The present invention is to increase the capacity of the power plant, consisting of a vertical duct, connected to a horizontal duct and placed them in power generators. Since this power plant uses the energy from the wind, let's call her aeroelectrometry.

This task is solved in that in euroelectrotech consisting of generators, horizontal and vertikalno the ducts, generators kinematically connected with frames, sequentially ustanovlennymi in the planes of the cross-section of the duct with the possibility of reciprocating motion, a limited elastic supports frame has plans aerodynamic profile, and in the first entry of the duct frame plans established with limited stops synchronous rotation about the longitudinal axes of the ducts longitudinal axes located in the plane of the frame, the second frame plans relative to the stationary frame.

Fig.1 shows the scheme of the proposed euroelectrotech /longitudinal section in a vertical plane/. Aeroelectrometry consists of a horizontal duct - 1, connected to a vertical duct - 2, exit duct - 2 is located above the entrance of the duct 1, and the area of the inlet duct is 1 larger than the area of the exit duct - 2. In the duct - 1 are the generators 3 and 4, connected to the frames 5 and 6 kinematic links 7 and 8.. the length of the duct can have multiple generators and a corresponding number of frames. Their number depends on the specific economic and technical circumstances. Frames 5 and 6 /2, a longitudinal section, top view/ have the freedom reciprocating motion relative to the air is horseflies in linear kinematic pairs - 9 in the planes of the cross-section of the ducts, for example, in the horizontal direction. In frame 5 is installed wind plans - 10, i.e. elongated plate having an aerodynamic cross-sectional profile. The main longitudinal axis of the plans lie in the plane of the frame. Aerodynamic plans - 10 have the freedom of turns about its major longitudinal axis and interconnected kinematic link - 11, providing simultaneous rotation in the same limited by stops 12 and 13 with optimal aerodynamic point of view angles relative to the longitudinal axes of the ducts. In the frame 6 /2/ installed wind plans - 14 main longitudinal axes in the plane of the frame and with their planes perpendicular to the plane of the frame. Plans - 14 fixed relative to the frame. Frames 5 and 6 are arranged with their planes perpendicular to the longitudinal axis of the duct. The first entry of the duct installed the frame with swivel plans /1, 2/. Linear movement of the RAM 5 and 6 are limited to the elastic lugs - 15, 16, 17, 18. Frames 5 and 6 can be placed in a vertical duct, however, from the viewpoint of easy operation, preferably placing them in a horizontal duct.

The work of euroelectrotech consists in the following. Under the action of the above natural factors and due to the fact that h is about the size of the input horizontal duct larger than the output of the vertical duct located inside the ducts, the air moves towards the exit of the vertical duct, i.e. produces thrust. The air flow is directed along the axis of the duct and blows wind plans - 10 in his first go frame - 5, which are arranged with respect to the vector of its velocity at a certain angle, and each plan develops is proportional to the square of the speed, the aerodynamic characteristics of plans and corner blowing /angle of attack/ aerodynamic lift force perpendicular to the velocity vector of the flow and lying in the plane of the freedom of the reciprocating movement of the frame. If the point of application of the lifting force does not coincide with the axis of rotation of the plan, under the action of the moment of this force plans - 10 are rotated around their longitudinal axes, depending on their initial deflection from the longitudinal axis of the duct, to, for example, another 12 installed on optimal from the point of view of maximum lifting force angle of attack, and frame 5 moves across the stream, for example, in the direction of the elastic limit 15./ Full analogy with the work of the aircraft wing/. When you approach the focus frame 5 rests on it, compresses it and slows down and installed it aerodynamic plans - 10 continue to move by inertia and rotate around their longitudinal axes at an optimal angle of attack, limited by the stop 13 and opposite in sign to the angle of attack, which took place during movement of the frame to the brake is available. Due to the change of angle of attack on the opposite changes in the opposite direction acting on the aerodynamic plans - 10 aerodynamic lift. Under the action of the oppositely directed force frame - 5 starts to move in the opposite direction to the stop 16, the elastic limit 15 straightens, giving the frame 5 a certain amount of movement stored in its compression. Frame 5 is coming to the end 16, where the pattern of motion is repeated: frame - 5 goes to the stop 15, and so continuously. During this reciprocating movement of the frame 5 through the kinematic connection 7, for example, a crank mechanism, rotates the rotor of the generator - 3, and the latter produces electricity.

In each phase of movement of the frame 5 with each plan comes rejected on the angle of attack with respect to its initial direction of flow of the ambient environment. This thread washes at the optimal angle of attack plans behind the frame - frame 5 - 6, and also develops aerodynamic lift force. Under the action of this force frame 6 moves in the direction opposite to the direction of movement of the frame 5 and at the time of braking of frame 5 rests against the elastic emphasis - 17, gives him the accumulated kinetic energy and is retarded. At the time of changing the direction of movement of the frame - 5 is changed to the opposite corner is l flow flow plans 14, is changed to the opposite direction occurred to them lifting force. Frame 6 moves in the opposite direction and ceases to press on the stop 17. Emphasis is 17, and stands up, giving it up to them the energy of the frame 6, and it is under the action of the lifting forces are in opposite directions and given emphasis - 17 energy moves in the direction of the stop 18. This process is periodically repeated, both frames move in antiphase. During its reciprocating movement of the frame 6 through the kinematic link - 8 rotates a rotor connected with her electric - 4, and that generates electricity. Option kinematic relations, in which the frame 5 rotates the rotor of the generator 3, the frame 6 rotates its stator or Vice versa. In this case, the electric power generated by one generator, is doubled. The choice is determined by the specific circumstances.

Washer frame - 5 air flow is usually laminar in nature, and the vector of its velocity is directed parallel to the longitudinal axis of the duct. Since washed them aerodynamic plans do not rotate, they are not savariaud descending from them flow, and since the speed of their flow stream of the same along the entire length of the plan, they are not formed and does not leave induced flows, i.e. the energy of the flow is not spent on education, and the motion of vortices. Due to this, the utilization of wind energy at wind plans above, than rotating windwheels. Aerodynamic plans only slow down the flow by taking his energy on movement of the frame and the rotation of the generator and turn the flow velocity on the angle of attack to the direction of the longitudinal axis of the duct. /Like for directing vanes of a gas turbine or wind tunnel/. So come down from plans frame - 5 stream maintains laminar in nature, and goes on to frame plans - 6 at the optimal angle of attack. As a result, the power developed by the frame 6, a little less power frame - 5 due to the deceleration of the flow frame plans - 5 and its friction washed them with other items

Due to the fact that the plans of the frame - 6 stationary relative to it and is constantly oriented along the longitudinal axis of the duct coming from them flow is oriented along this axis and stores the laminar character.. So if for frame - 6 has placed consistently new frame 5 and frame 6, and behind them is still the same group of frames, the physics of their operation is the same

The proposed construction of euroelectrotech allows you to save laminarinase washing its frame flow along the entire length of the duct and thereby generate electricity in the air duct, the cross-sectional area which is almost equal under the frame square. From the experience of testing microelectro is ANSI know, what is placed in the tunnel, for example in a wind tunnel, vetroelektrostantsiy with rotating wind turbine can operate at full capacity only if under the propeller area does not exceed 15% of the cross-sectional area of the tunnel. In the vicinity of these areas, the capacity drops sharply, because of the reasons given above. Thus, the technical effect of the invention is that when the same areas of the cross sections of the ducts and optimal from the point of view of maximum generated power and the dimensions of the frames and windwheels power of the proposed euroelectrotech not less than twelve times will be higher capacity wind power plant prototype. In addition, this design allows you to provide any desired output of the plant, with consistently along the axis of the duct required number of connected generators frames with aerodynamic plans with freedom reciprocating motion transversely to the longitudinal axis of the duct. Due to the high utilization rate of the cross-sectional area of the duct economic efficiency euroelectrotech will also be much higher economic efficiency of the prototype.

Aeroelectrometry to use wind energy, containing a horizontal duct, VERTIC the local duct and generators, characterized in that the generators kinematically connected with frames, successively installed in the planes of the cross-section of the duct with the possibility of reciprocating motion, a limited elastic supports frame has plans aerodynamic profile, and in the first entry of the duct frame plans established with limited stops synchronous rotation about the longitudinal axis of the duct to the longitudinal axes located in the plane of the frame, the second frame plans relative to the stationary frame.



 

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