Power plant to convert energy of air or water flow currents

FIELD: power engineering.

SUBSTANCE: power plant for conversion of energy of air or water flow currents comprises a power takeoff shaft and a wing or an airfoil section kinematically connected to it. The power takeoff shaft is arranged in the form of a crankshaft. The crankshaft is equipped with a journal with sides and two L-shaped levers. Each lever with its one arm is rigidly connected to an axis of rotation for power takeoff, and with the other arm - to the appropriate side of the journal. The wing or the airfoil section is connected to this crankshaft by means of slings. The rear edge of the wing via bearings is connected with slings to the axis of the crankshaft journal, and the front edge of the wing - via bearings to coaxial arms of L-shaped levers.

EFFECT: invention makes it possible to simplify design and to reduce metal intensity of a power plant.

8 dwg

 

The invention relates to the field of energy and can be used in wind power or hydropower plants to generate electricity or to perform mechanical work.

In the prior art it is known device that converts wind energy into electrical energy with the transfer of mechanical work on the working body, performing oscillatory motion (EN 2142572, IPC F03D 5/06, publ. 10.12.1999). The disadvantage of the Converter is that it has a complex structure. In addition, for obtaining useful work requires great pressure of the fluid. Also known energy Converter wind acting on the tethered aircraft, with the transfer of mechanical work on the working body, performing oscillatory motion (EN 2109981, F03D 5/06, publ. 27.04.1998,). Known Converter includes an aircraft that is holding the rope, working body, reciprocating movement, and a mechanism for performing useful work. Known Converter allows the use of air flow, usually blowing on high. The disadvantage of this solution lies in the structural complexity of the kinematic relations. The motion of the wind on the working body has a complex structure and can quickly fail.

Known power plant for pre is obrazovaniya energy currents of air or water flows, containing the PTO, which kinematically via wire transfer associated wing or airfoil, is introduced into the stream in the direction of its motion (WO 2008034421, publ. 27.03.2008). This decision was made as a prototype.

The disadvantage of this solution lies in the difficulty of communication wing with PTO shaft, which causes the presence of large mechanical losses due to the resistance to movement troubleclef transmission elements.

The objective of this invention is to provide a Converter of wind energy with a relatively simple design, which is more reliable than the prototype, and the ability to convert wind energy directly into rotational movement of the working body with its subsequent use to generate electricity.

The present invention is directed to the achievement of the technical result consists in simplifying the structure, reducing the metal, improving technology and, as a consequence, a sharp reduction in the unit value generated kilowatt hour of electricity.

This technical result is achieved by the fact that the power plant is to convert the energy currents of air or water streams containing the PTO, which is kinematically connected discourse in the thread in the direction of its DV is the supply of a wing or airfoil, the PTO is made in the form of a crankshaft having a neck with cheeks, and two spaced l-shaped lever rigidly attached to each one's shoulder to the axis of rotation, designed for power and the other shoulder to the corresponding cheek of the neck, and the wing or airfoil is connected with the crankshaft slings, and the rear edge of the wing through the bearings slings connected to the axis of the crankshaft pin and the front edge of the wing through the bearings to coaxially located shoulders of l-shaped levers, which are attached to the cheeks.

These characteristics are essential and interrelated with the formation of a stable set of essential features, sufficient to obtain the desired technical result.

The invention is illustrated by a specific example, which, however, is not only possible, but clearly demonstrates the possibility of achieving a given set of features required technical result.

Figure 1 - General view of the plant;

figure 2 - plan of the power plant (type Z);

figure 3 is a plan provisions wing is almost perpendicular to the wind (large angle of attack);

4 is a plan provisions wing is almost in the wind (small angle of attack);

5 is a view of the installation according to the Z-axis kinematic model with step-by-step displacement of the wings and showing the plan every 30°;

6 is a graph of the energy indicators for odnoklasniki and dvuhkrylnik units;

Fig.7 is a view of the power plant along the Z axis with the guide roller;

Fig - view of the power plant along the Z axis in the water flow.

The invention provides a direct conversion of the vibrational motion of the wing into rotational motion of the crankshaft with a minimum of material and with maximum simplicity and reliability of the plant.

The power plant is to convert the energy currents of air or water streams (1, 2) contains a shaft 1, which is kinematically connected part of the stream along its direction of motion of the wing 2 or aerodynamic profile. You can use inflatable wing is lighter than air.

The PTO is made in the form of a crankshaft of a special form, rotating around the axis O-O. the Crankshaft has a neck 3 with cheeks 4, arranged in a common plane, and two are located in a common plane l-shaped lever 5, each rigidly attached to one shoulder to the axis 6 of rotation (rotation around the axis O-O), designed for PTO. Another shoulder l-shaped levers attached to the corresponding cheek of the cervix. Wing or airfoil is connected with the crankshaft lines 7, and the rear edge of the wing through the bearings 8 slings connected to the axis Saki (axis A1-A1) crankshaft and the front edge of the wing through the bearings to coaxially located shoulders of l-shaped levers (axis A2-A2), which is attached to the cheeks.

From the choice of coordinate points A2 and A1 of the crankshaft in the plane of the drawing XOY depend on the coordinates of the points C1 and C2 of the wing and, therefore, the angle of attack (figure 2). And this angle of attack will vary depending on the angle of rotation α of the crankshaft about its axis O.

The position of the axes A1-A1 and A2-A2, that is, the angle ∠ A1-O-A2=β and shoulders OS1 and OS2 crankshaft selected so that the angle of attack of the wing is changed depending on the rotation angle α, namely in the first half revolutions of the crankshaft was maximum, and the second half is the minimum, which is achieved by the choice of the geometric parameters of the crankshaft, the lengths of the lines, the size of the wing.

As an example, we give below two edge installation status (with a maximum (figure 3) and minimum (figure 4) torque on the shaft). Figure 3 shows that in this position the wing is almost perpendicular to the wind (large angle of attack). Resistance force maximum, multiplied by the maximum leverage in this position it gives the maximum torque. Figure 4 shows that in this position the wing is almost in the wind (small angle of attack). Resistance force is minimal and gives a minimum torque.

Thus, during one half-period of the wind among people who t a great job (let's call it positive and for the second half-cycle is small, but in the opposite direction (let's call it negative). Total work and will be useful for the work of the wind flow for the period.

Figure 5 shows an example of a kinematic model with step-by-step offset and displayed on the picture every 30°, which clearly shows that one half of the angle of attack of the wing close to 90°, and the second half it is minimal.

The difference works for the first and second half-periods give the total work period per rotation) of the crankshaft. All the power plant can be placed on a platform rotatable about a vertical axis in the direction of the wind vane. To improve the uniformity of rotation and smoothing of shocks on the axis O-O, you can position the flywheel. Also on the axis O-O you can place any number of elementary (working on one wing) power plants with the aim of increasing the total capacity, improve the uniformity of rotation and smoothing of shocks (as of cylinders in the internal combustion engine).

Computer program for calculation of kinematic, aerodynamic and energy parameters of the installation produces results in relative units, which are shown in the graphs (Fig.6).

To increase reliability (in particular, avoid touching slings spinning Detelinara, for example, the sudden change in wind direction) lines can pass through guide rollers, as shown in Fig.7 (for wind) and Fig (for water flow, such as sea currents).

Thus, the present invention provides the possibility of obtaining power from the energy of water or air flow when using a simple kinematic design of the crankshaft. The present invention is industrially applicable, as may be produced by known technologies.

The power plant is to convert the energy currents of air or water streams containing the PTO, which is kinematically linked introduced into the stream along its direction of movement of the wing or airfoil, wherein the shaft is made in the form of a crankshaft having a neck with cheeks, and two l-shaped levers, each rigidly attached to one shoulder to the axis of rotation, designed for power and the other shoulder to the corresponding cheek of the neck, and wing or airfoil is connected with the crankshaft slings, and the rear edge of the wing through the bearings slings connected to the axis of the crankshaft pin and the front edge of the wing through the bearings to coaxially located shoulders of l-shaped levers.



 

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