RU2379545C1 - Method of converting kinetic wind energy - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: method of converting kinetic energy of wind which acts on fixed flying vehicle with transmission of mechanical power to working member located on the ground consists in the fact that there formed are two differently directed forces acting on flying vehicle, one of which pulls the vehicle up and is determined by the fact that the vehicle is lighter than air, and the other force is specified with its aerodynamic shape having the form of semi-sphere with lower spherical surface and upper flat surface. Besides it is possible to create additional force which acts during downward vehicle movement owing to the shape given to flying vehicle of asymmetric shape in the form of flat visor, which protrudes behind the ranges of perimeter of upper surface of flying vehicle, which activates vibration process.

EFFECT: conversion of energy of wind blowing even with low velocity to vibratory movement of working member with its further being used for electricity generation.

2 cl, 3 dwg

Description

The invention relates to the conversion of wind energy acting on a tethered aircraft, with the transfer of mechanical work to the working body, making an oscillatory movement.

The prior art methods for converting wind energy with the transfer of mechanical work to a working body that performs oscillatory motion. (See, for example, RF patent No. 2142572, IPC F03D 5/06 “Device for converting fluid energy”, published on December 10, 1999 into Bull. No. 34).

The disadvantage of this method is that the devices made to implement this method have a complex structure. In addition, to obtain useful work requires a large pressure head of the fluid.

The closest in technical essence and adopted as a prototype is a method of converting wind energy acting on a tethered aircraft with the transfer of mechanical work to a working body that performs oscillatory motion. (See, for example, RF patent No. 2109981, IPC F03D 5/06 "Method for the conversion of kinetic energy of high-speed wind pressure and wind turbine", published on April 27, 1998 to Bull. No. 12).

The method allows the use of air flows, usually blowing at altitude.

The disadvantage of the prototype, as well as the analogue, is that with low speed wind pressures, the energy received is small.

The objective of the invention is the conversion of wind energy, blowing even at low speed, into the oscillatory movement of the working body with its subsequent use to generate electricity.

This problem is solved due to the fact that in the method of converting the kinetic energy of the wind acting on a tethered flying apparatus with the transmission of mechanical power to a working body located on the ground, according to the invention, two differently directed forces acting on the flying apparatus are formed, one of which pulls the apparatus up and is determined by the fact that the apparatus is made lighter than air, and the second force is determined by its aerodynamic shape, having the form of a hemisphere, with a lower spherical and flat upper surfaces.

In the embodiment of the technical solution, when the apparatus moves downward, an additional force is formed, which rotates the apparatus at an angle to the wind, due to giving the apparatus an asymmetric shape in the form of a flat peak that extends beyond the perimeter of the upper surface.

The presence of two multidirectional forces, one of which pulls the device up and is determined by the fact that the device is lighter than air, and the second force is determined by its aerodynamic shape, made in the form of a hemisphere with a spherical surface directed downwards, leads to the fact that even with a small pressure head begins to respond to the wind, forcing the mechanical elements of the structure attached to the apparatus to oscillate.

Giving asymmetry to the shape of the aircraft, which when moving downward forms an additional force that turns the device at an angle to the wind, enhances the oscillatory processes when exposed to wind.

The claimed invention is illustrated by drawings.

Figure 1 presents a schematic mechanical diagram of a device that performs the function of converting wind energy.

Figure 2 shows a tethered aircraft with a visor, side view.

Figure 3 shows a tethered aircraft with a visor, top view.

The mechanical circuit consists of a hollow tethered aircraft 1 (figure 1). The aircraft has an aerodynamic profile, consisting of a convex spherical 2 and flat 3 surfaces. Convex surface 2 is oriented downward. The inner surface of the apparatus can be filled with gas with a specific gravity less than the specific gravity of air. The device is tied with a cable 4, which passes through a rigidly fixed funnel-shaped receiver 5 with rounded upper and lower edges. The inner surface of the receiver has a special coating that reduces the friction of the cable against its walls. The cable has a clip 6, to which, using an auxiliary cable 7, the core 8 of the electromagnetic transducer and the compression-tension spring 9 are sequentially attached. From the bottom, the spring 9 is attached to a fixed surface (not shown).

In a technical solution, the upper surface 3 of the aircraft 1 is equipped with a flat visor 10 (Fig.2, 3), which extends beyond the perimeter of the upper surface, which gives the device an asymmetric shape.

The method of converting the kinetic energy of the wind acting on a tethered flying apparatus with the transmission of mechanical power to a working body located on the ground is as follows. Due to the fact that the device is lighter than air, it rises above the earth's surface to a certain height, determined by the length of the cable 4, stretching the spring 9. When exposed to the aircraft 1 air flow, it due to the aerodynamic effect, determined by the speed difference of the wind flows around it with the upper surface 3 and the lower surface 2, will tend to move down, reducing the tensile force acting on the spring 9. Thus, two forces act on the apparatus, one of which tends to lift it up, and the second th to lower down. Due to the fact that the wind always blows at a variable speed, apparatus 1 will oscillate up and down. These movements are transmitted through the cable 4, the clamp 6 and the auxiliary cable 7 to the spring 9 and lead to its alternate compression and extension. The oscillating movements of the spring cause the core 8 to also reciprocate, which causes the appearance of electrical voltage on the coil (not shown), inside which the core is placed 8. Thus, there is a conversion of the kinetic energy of the wind into electrical energy that can be used for various household and household needs.

In the presence of a visor 10 (Fig.2, 3) during movement under the influence of the wind of the apparatus 1 down on the visor will act one-sided force of air resistance directed vertically. The device will turn sideways with respect to the wind and the aerodynamic effect will weaken. The device will begin to rise up, trying to take its original position. Next, the process will be repeated. Due to this, an additional change in the balance of forces acting on the device will occur even with a constant air flow. As a result, the oscillatory process will occur more intensively, which will increase the energy return of the system.

Claims (2)

1. A method of converting the kinetic energy of the wind acting on a tethered flying apparatus, with the transmission of mechanical power to a working body located on the ground, characterized in that it forms two multidirectional forces acting on the flying apparatus, one of which pulls the apparatus up and is determined by that the apparatus is made lighter than air, and the second force is determined by its aerodynamic shape, having the form of a hemisphere with a spherical lower and flat upper surfaces. 2. The method according to claim 1, characterized in that they form an additional force that acts when the device moves downward due to giving the flying machine an asymmetric shape in the form of a flat visor that extends beyond the perimeter of the upper surface of the aircraft.

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