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INVENTION
Patent of the Russian Federation RU2152537
WIND ROTOR FOR WINDOW
The name of the inventor: Georgy Pavlovich Gerasimov
The name of the patent holder: Gerasimov Georgiy Pavlovich
Address for correspondence: 672030, Chita, 5 md. 35, apt. 28, GP Gerasimov.
Date of commencement of the patent: 1996.06.19
The invention relates to wind power, namely to devices for converting wind energy into mechanical energy, for example in autonomous wind power plants. The technical result, which consists in increasing the reliability of the windmill, is ensured by the fact that in the windmill rotor containing the vertical shaft installed in the bearing supports with radial brackets evenly arranged in circumference in two tiers, fastened in each tier by two coaxial rings and vertical outer and inner rods installed In pairs on each radius, and profiled blades hinged on the outer rods, the distance between the outer and inner vertical rods at each radius being less than the length of the blade, according to the invention, each profiled blade is made of two parts - the main and tail, articulated along an arc of a circle And connected by leaf springs arranged along the axis of symmetry of the transverse section of the blade with the possibility of turning the tail part during interaction with the inner vertical rods, and the inner vertical rods are rotatably supported with a sleeve or ring.
DESCRIPTION OF THE INVENTION
The invention relates to devices for converting wind energy into mechanical energy and can be used in the creation of autonomous wind power plants.
A rotor of a windmill is known, containing a vertical shaft installed in bearing supports, to the top and to the bottom of which are fixed radially located brackets, connected among themselves by vertical rods, on which the blades are hinged and cantilevered with the possibility of interaction of the tail sections with stops mounted on the shaft Certificate of the USSR N 1377448, M.K. F 03 D 3/02).
The blades of such a rotor represent an integral and rigid structure, and in this connection, under stormy winds, they are under the influence of excessively high loads, which leads to a decrease in the reliability of the blades and wind turbine as a whole.
A rotor of a wind turbine is known, containing a vertical shaft mounted in bearing supports with radial brackets evenly arranged in circumference in two tiers, fastened in each tier by two coaxial rings and vertical outer and inner rods mounted in pairs at each radius, and profiled blades hinged on the outer Rods, and the distance between the outer and inner vertical rods at each radius is less than the length of the blade (author's certificate of the USSR N 992800, M.K. F 03 D 3/00).
This wind turbine rotor, which is closest to the present invention, has blades which are a solid and rigid structure, and in this case, under storm winds, they are under the influence of excessively high loads, which leads to a considerable excess of the rotor speed of the windmill and its reduction Reliability.
Increasing the reliability of the wind turbine is achieved by the fact that in the proposed wind turbine rotor containing a vertical shaft installed in bearing supports with radial brackets evenly arranged in circumference in two tiers, fastened in each tier by two coaxial rings and vertical outer and inner rods installed in pairs at each radius, And profiled blades hinged on the outer rods, the distance between the outer and inner vertical rods at each radius being less than the length of the blade, each profiled blade being made of two parts articulated along an arc of the circle and connected by leaf springs arranged along the axis of symmetry of the cross section Blades with the ability to rotate the tail part during interaction with internal vertical rods. At the same time, inner vertical rods are fitted with the possibility of rotating a bushing or ring.
The execution of each profiled blade from the main and tail sections, elastically connected to each other and with the possibility of turning the tail part relatively to the main one, makes it possible, during storm winds and when excessive loads occur, to translate profiled blades into a vane position, thereby eliminating the excess speed of the rotor of the windmill and, Consequently, increase its reliability.
Comparative analysis with the prototype shows that the claimed rotor of the windmill is characterized by the fact that each profiled blade is made of two parts - the main and tail blades, articulated along an arc of the circle and connected by leaf springs arranged along the symmetry axis of the transverse section of the blade with the possibility of turning the tail part relatively Main, while the inner vertical rods are fitted with the ability to rotate the bushing.
Thus, the claimed rotor corresponds to the criterion of the invention "novelty".
Comparison of the claimed solution not only with the prototype, but also with other technical solutions in the field of technology, did not allow to identify in them the features that differentiate the claimed solution from the prototype, which allows to conclude that the criterion "inventive level" is met.
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BRIEF DESCRIPTION OF THE DRAWINGS The essence of the invention is illustrated in the drawing, where FIG. 1 shows a windmill rotor, view A in FIG. 2; In Fig. 2 - rotor of the windmill, top view; 3 shows a blade, a transverse section.
The rotor of the windmill (Figures 1, 2) contains a vertical shaft 2 mounted in the bearing supports 1 with radial arms 3 uniformly circumferentially distributed in two tiers, fastened in each tier by two coaxial rings 4 and vertical outer 5 and inner 6 rods installed in pairs Each radius, and profiled blades 7 pivotally attached to the outer rods 5, the distance between the outer 5 and the inner 6 vertical rods at each radius being less than the length of the blade 7. Each profiled blade 7 is made of two parts - the main 8 and the tail 9, articulated between By the arc of a circle and connected by plate springs 10, the ends of which are fixed to the respective parts 8 and 9. The leaf springs 10 are arranged along the axis of symmetry of the transverse section of the blade 7.
In addition, the inner vertical rods 6 in the engagement portion thereof with the tail portions 9 of the profiled blades 7 are rotatably mounted to rotate the sleeve 11 or ring.
THE WIND ROTOR WORKS AS FOLLOWING
With a wind of sufficient high-speed pressure, the profiled blades 7 under the action of aerodynamic forces are deployed by the main part 8 on the outer vertical rods 5 and are pressed by the tail part 9 to the inner vertical rods 6 and, thus perceiving the wind energy, transfer it to the shaft 2. Passing the zone of the frontal impact of the wind , The profiled blades 7 are deployed and self-aligned in the vane position with minimal aerodynamic drag. When the wind increases to the storm, the profiled blades 7 at the moment of interaction by their tail part 9 with the inner vertical rods 6 experience excessive stresses on the transverse fracture, but since the tail 9 and the main 8 parts of the blade are articulated along the arc of the circle and connected by the leaf springs of the bend 10, The tailpiece 9, overcoming a predetermined force of the spring 10, bends, slides along the sleeves (rings) 11 and leaves the contact with the inner vertical rod 6, and the profiled blade 7 goes into the vane position, in connection with which the windmill continues to operate, but in the maximum permissible Mode, i.e. Without exceeding the permissible rotational speed of the windmill rotor, while the sleeves or rings 11 are rotatably mounted, the tail part 9 of the blade 7 interacts with the vertical rods 6 with the frictional force of the rolling, which further increases the durability of the blades.
CLAIM
1. A rotor of a windmill containing a vertical shaft installed in bearing supports with uniformly circumferentially distributed two radial brackets in each tier, fastened in each tier by two coaxial rings and vertical outer and inner rods mounted in pairs at each radius, and profiled blades pivotally mounted on Outer rods, the distance between the outer and inner vertical rods at each radius being less than the length of the blade, characterized in that each profiled blade is made of two parts, the main and tail, articulated along an arc of the circle and connected by leaf springs arranged along the axis of symmetry of the transverse Section of the blade with the ability to rotate the tail part during interaction with internal vertical rods.
2. The rotor of the windmill according to claim 1, characterized in that the inner vertical rods are rotatably supported with a sleeve or ring.
print version
Publication date 31.01.2007gg
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