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INVENTION
Patent of the Russian Federation RU2118705
WIND POWER PLANT
The name of the inventor: Cheboksarov V.V.
The name of the patent holder: Far Eastern State Technical University
Address for correspondence:
Date of commencement of the patent: 1996.12.03
The invention makes it possible to improve the energy conversion efficiency of a wind power plant while ensuring the reliability of this process, irrespective of the dimensions of the impeller. The installation consists of a supporting structure made in the form of an annular pontoon on a stationary base. At the upper end of the energy converter, hubs are made, with the edges of which are connected by flexible thrusts. Flexible links are located along the chords of the ring pontoon and connect the pontoon with the hub of the converter of mechanical energy into electrical.
DESCRIPTION OF THE INVENTION
The invention relates to the field of small-scale power engineering and can be used to create wind power stations.
A wind power station is known, comprising a wind-wheel of a carousel type, including a ring rail, vertical masts, sailing working members mounted thereon, wheeled supports connected to them, in contact with the rail under the canopy, and both the ring awning and the tunnel inside which the generator inductor is located See AS USSR No. 1455037, cl. F 03 D 5/04, 1989).
The disadvantages of such an installation are the presence of a support rail system, which significantly complicates and consequently increases the cost of installation; Large rolling friction forces along the rail, which lead to additional irreversible power losses; No battery of inertial energy.
There is also known a wind power installation containing wind-receiving working elements mounted on a ring pontoon and an energy converter kinematically connected with a pontoon (see AS No. 1719713, class F 03 D 3/06, 1992).
The last solution is the closest in terms of the technical essence to the proposed one and is chosen as a prototype.
The disadvantage of the prototype is expressed in the complication of the transfer of mechanical energy to the electric generators, especially with increasing wheel dimensions, which is caused by the presence of radial displacement forces of the pontoon during its rotation. Thus, the pontoon effectively interacts only with those generators in the direction of which the named force acts. In addition, the need to build an annular channel (or at least mount several support elements (stops) along the outer perimeter of the pontoon) significantly complicates and increases the cost of installing the installation.
The task, to solve which the claimed solution is directed, is expressed in increasing the efficiency of the process of converting mechanical energy into electrical energy, while ensuring the reliability of this process, irrespective of the dimensions of the impeller, using the free surface of lakes and seas in the coastal zone.
The technical result achieved in solving this problem is expressed in simplifying and increasing the stability when an installation of increased dimensions is placed on the free water area, reducing the liquid friction and increasing the mass of water involved in rotation to store energy.
The stated task is solved by the fact that a wind power installation comprising wind-receiving working elements mounted on a ring pontoon and an energy converter kinematically connected to a pontoon is characterized in that the energy converter is located inside the ring on a stationary base, the pontoon being connected to the hub of a mechanical energy converter in Electric by means of flexible rods arranged along the chord of the pontoon ring and connected to the edge of the hub. In addition, the wind-receiving working elements are made in the form of rotary blades.
A comparative analysis of the essential features of the claimed solution and the features of the analogs and prototype testifies to its compliance with the criterion of "novelty".
At the same time, the following functional tasks solve the characteristics of the inventive part of the claims.
The sign "... the energy converter is placed inside the ring on a stationary base ..." makes it possible to exclude nonrotating elements in the zone of the carrier system, where water is untwisted and provide simple energy removal to the converter of mechanical energy into electrical, to increase safety and emergency stability.
The signs "... the pontoon is connected to the hub of the mechanical energy converter into the electric by means of flexible links arranged along the chord of the pontoon ring and connected to the hub edge" allow the pontoon to be centered relative to the stationary base and transmit the torque. In addition, the presence of flexible rods facilitates the work of the structure in the case of waves and fluctuations in the water level.
The sign "... the wind-receiving working bodies are made in the form of rotary blades" allows to increase the efficiency of energy removal.
The essence of the invention is explained in the drawing, which shows a wind power plant in a section.
The drawing shows the pontoon 1, the blades 2, the rotation mechanism 3 of the blades 2, the energy converter 4, the stationary base 5, the hubs 6, the flexible links 7.
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The installation consists of a supporting structure made in the form of an annular pontoon 1. One side of the pontoon 1 is formed in a necessary shape to support the surface of the water. On the free side of the pontoon 1, wind-receiving working elements are installed, which are made in the form of rotary blades 2 and the rotation mechanism 3 of these blades. The rotation mechanism 3 of the blades 2 can be made in any conventional manner (for example, a gear train from a driving motor with a weather vane control). The energy converter 4 is mounted inside the annular pontoon 1 on a stationary base 5. At the upper end of the energy converter 4, hubs 6 are provided, with the edges of which are connected by flexible rods 7 (for example, a rope system). The ropes 7 are located along the chords of the ring pontoon 1 and connect the pontoon 1 with the hub 6 of the mechanical energy converter 4 into the electric one. |
The installation works as follows. When the wind appears, the blades 2 are placed in the working position with the help of the rotation mechanism 3. The blades 2 untwist the supporting structure (pontoon 1).
Due to the frictional forces on water, part of the energy at the initial moment is spent on "untwisting" the water. A water ring forms around the stationary base 5, which will support the rotation of the pontoon 1 as the wind strength decreases. With the help of flexible rods through the hubs 6, the rotation of the pontoon 1 is transferred to the energy converter 4 located on a stationary base 5.
CLAIM
A wind power plant comprising wind-receiving operating members mounted on a ring pontoon and an energy converter kinematically coupled to a pontoon, characterized in that the energy converter is located inside the ring on a stationary base, the pontoon being connected to the hub of the mechanical energy converter into electrical by means of flexible Rods arranged along the chord of the pontoon ring and connected to the edge of the hub.
2. Installation according to claim 1, characterized in that the wind-receiving operating members are made in the form of rotary blades.
print version
Date of publication 10.04.2007gg
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